WINDOW AIR CONDITIONER

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is continuation of Internation Application No. PCT/CN2025/109327 filed on Jul. 18, 2025, which claims priority to International Patent Application No. PCT/CN2024/143698, filed on Dec. 30, 2024, Chinese Patent Application No. 202422036349.2, filed on Aug. 21, 2024, and Chinese Patent Application No. 202422036337.X, filed on Aug. 21, 2024. The entire disclosures of the above-identified applications are hereby incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the technical field of air conditioning, and more particularly to a window air conditioner.

BACKGROUND

With the development of science and technology and the improvement of people's living standards, window air conditioners have rapidly occupied the North American market with the advantages such as low price, convenient installation and convenient maintenance.

The electric control box is a relatively important part of the window air conditioner, and the location layout of the electric control box significantly impacts the structural compactness and miniaturization of the entire unit.

SUMMARY

Some embodiments of the present disclosure provide a window air conditioner including: an outdoor housing, a motor bracket, and an electric control box. The motor bracket is disposed inside the outdoor housing. The electric control box is mounted on the motor bracket. The length direction of the electric control box is aligned with the width direction of the outdoor housing, the width direction of the electric control box is aligned with the height direction of the outdoor housing, and the depth direction of the electric control box is aligned with the length direction of the outdoor housing. The electric control box includes an inner box body, a circuit board, and an outer box body. The circuit board is disposed inside the inner box body, and a heat sink is mounted on the circuit board. The outer box body covers a periphery of the inner box body, a side surface of the outer box body facing the indoor portion is a closed surface, and an another side surface facing the side surface of the outer box body having an opening for the heat sink to pass through, while a remaining area of the another side surface is also a closed surface. An air outlet gap is formed on the side of the outer box body close to the outdoor housing along the height direction of the outdoor housing.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a structural diagram of a window air conditioner according to some embodiments.

FIG. 2 is a partial structural diagram of a window air conditioner according to some embodiments.

FIG. 3 is an exploded view of a window air conditioner and an electric control box according to some embodiments.

FIG. 4 is a structural diagram of an outdoor portion according to some embodiments.

FIG. 5 is a structural diagram of an outdoor portion and an electric control box according to some embodiments.

FIG. 6 is a structural diagram of an electric control box according to some embodiments.

FIG. 7 is another structural diagram of an electric control box according to some embodiments.

FIG. 8 is an exploded view of an electric control box according to some embodiments.

FIG. 9 is a partial structural exploded view of an electric control box according to some embodiments.

FIG. 10 is another partial structural exploded view of an electric control box according to some embodiments.

FIG. 11 is a partial structural diagram of the electric control box after installation in the window air conditioner according to some embodiments.

FIG. 12 is a top view of FIG. 11.

FIG. 13 is an exploded schematic diagram of an electric control box of a window air conditioner according to some embodiments.

FIG. 14 is a rear view of an electric control box of a window air conditioner according to some embodiments.

FIG. 15 is a front view of a circuit board after removing an outer box body and a first sub-inner box body from an electric control box of a window air conditioner according to some embodiments.

FIG. 16 is a structural diagram of an electric control box after removing the outer box body from a window air conditioner according to some embodiments.

FIG. 17 is a front view of an electric control box of a window air conditioner according to some embodiments.

FIG. 18a is a cross-sectional view taken along line F-F in FIG. 17.

FIG. 18b is a partial enlarged view of region E in FIG. 18a.

FIG. 19 is a bottom view of an electric control box of a window air conditioner according to some embodiments.

FIG. 20 is a partial three-dimensional structural diagram of an electric control box after installation in a window air conditioner according to some embodiments.

FIG. 21 is a structural diagram of a window air conditioner after installation according to some embodiments.

FIG. 22 is another structural diagram of a window air conditioner after installation according to some embodiments.

FIG. 23 is a side view of a window air conditioner after installation according to some embodiments.

FIG. 24 is a structural diagram of a window air conditioner according to some embodiments.

FIG. 25 is a partial structural diagram of a window air conditioner according to some embodiments.

FIG. 26 is a side view of a window air conditioner according to some embodiments.

FIG. 27 is a cross-sectional view taken in an A-A direction of FIG. 26.

FIG. 28 is an enlarged view at detail B in FIG. 27.

FIG. 29 is a partial structural diagram of an indoor portion according to some embodiments.

FIG. 30 is an enlarged view at detail C in FIG. 29.

FIG. 31 is an enlarged view at detail D in FIG. 29.

FIG. 32 is another partial structural schematic diagram of an indoor portion according to some embodiments.

DESCRIPTION OF THE EMBODIMENTS

Hereinafter, some embodiments of the present disclosure will be clearly and completely described with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, but not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those ordinarily skilled in the art fall within the scope of protection of the present disclosure.

Unless the context requires otherwise, throughout the description and claims, the term “comprise” and other forms thereof, such as the third-person singular form “comprises” and the present participle form “comprising” are construed in an open, inclusive meaning, that is, “comprising, but not limited to.” In the description, the terms “one embodiment,” “some embodiments,” “exemplary embodiments,” “example,” “specific example,” or “some examples,” etc. are intended to indicate that a particular feature, structure, material, or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic illustration of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any suitable manner.

Hereinafter, the terms “first” and “second” are for descriptive purposes only, and are not to be understood as indicating or implying relative importance or as implicitly indicating the number of technical features indicated. Thus, the use of terms like “first” and “second” to describe features can explicitly or implicitly encompass one or more of such features. In the description of embodiments of the present disclosure, unless otherwise specified, “a plurality” means two or more.

In describing some embodiments, the expressions “coupled” and “connected” and extensions thereof may be used. The term “connected” is to be understood in a broad sense, for example, “connected” may refer to a fixed connection, may also refer to a detachable connection, or an integral connection; and the term “connected” may refer to a direct connection or an indirect connected through an intermediate medium. The term “coupled” indicates that two or more components are in direct physical or electrical contact. The term “coupled” or “communicatively coupled” may also indicate that two or more components are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.

“At least one of A, B, and C” has the same meaning as “at least one of A, B, or C”, encompassing the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, as well as a combination of A, B, and C.

“A and/or B” includes three combinations of only A, only B, and a combination of A and B.

The use of “suitable for” or “configured to” herein means open and inclusive language that does not exclude devices suitable for or configured to perform additional tasks or steps.

As used herein, “about,” “approximately,” or “approximately” includes a stated value as well as an average within an acceptable range of deviation from a particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a particular amount (i.e., limitations of the measurement system).

As used herein, terms such as “parallel,” “perpendicular,” and “equal” encompass both the stated conditions and conditions that are approximate to the stated ones, with the range of approximation falling within an acceptable deviation, where the acceptable range of deviation is as determined by a person of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a particular quantity (i.e., limitations of the measurement system). For example, “parallel” encompasses both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for instance, within 5° of deviation; similarly, “perpendicular” includes both absolute perpendicularity and approximate perpendicularity, with an acceptable deviation range for approximate perpendicularity that can also be, for example, within 5° of deviation. “Equal” encompasses both absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two quantities being compared that is less than or equal to 5% of either quantity.

The electric control box is a relatively important part of the window air conditioner, and the location layout of the electric control box significantly impacts the structural compactness and miniaturization of the entire unit. The electrical box of the related window air conditioner is generally arranged flat on the outdoor motor bracket or vertically above the chassis. These two installation methods will cause an excessively large dimension in the front-rear direction of the window air conditioner.

As shown below in FIGS. 1 and 2, some embodiments of the present disclosure provide a window air conditioner 100. The window air conditioner 100 can increase the top air inlet area of the outdoor portion 102. The window air conditioner 100 may also shorten the outer dimension of the outdoor portion 102 in the front-rear direction.

As shown in FIG. 1, in some embodiments of the present disclosure, the window air conditioner 100 may include an indoor portion 101. The indoor portion 101 may be located indoors.

In some embodiments, as shown in FIG. 1, the window air conditioner 100 may include an outdoor portion 102. The outdoor portion 102 may be located outdoors.

In some embodiments, as shown in FIGS. 1 and 2, the indoor portion 101 may include an indoor housing 2. The indoor housing 2 may serve to protect and support the internal structure thereof.

In some embodiments, as shown in FIGS. 1 and 2, the indoor portion 101 may include an indoor air supply assembly (not shown in the figure). The indoor air supply assembly can deliver the heat-exchanged air indoors.

In some embodiments, as shown in FIGS. 1 and 2, the outdoor portion 102 may include the outdoor housing 1. The outdoor housing 1 may serve to protect and support the internal structure thereof.

In some embodiments, as shown in FIGS. 2 and 3, the outdoor portion 102 may include an outdoor air supply assembly 3. The outdoor air supply assembly 3 may deliver heat-exchanged air outdoors.

In some embodiments, as shown in FIGS. 2 and 3, the outdoor portion 102 may include an electric control box 7. The electric control box 7 can control the operation of the air conditioning system to ensure that the air conditioner can work according to the preset requirements.

In some embodiments, as shown in FIGS. 3, 4, and 5, the outdoor portion 102 may include an outdoor air duct assembly 31. The outdoor air supply assembly 3 may include an outdoor air duct assembly 31. The outdoor air duct assembly 31 is provided with a vent 311. The outdoor air duct assembly 31 is used for delivering air and changing the flow direction of the air, and the vent 311 can achieve the effect of air circulation between the inner and outer sides of the outdoor portion 102, thereby facilitating the operation of gas heat exchange.

In some embodiments, as shown in FIGS. 3, 4, and 5, the outdoor portion 102 may include the outdoor air supply assembly 3. The outdoor air supply assembly 3 may include the motor bracket 32. The motor bracket 32 is provided on the air outlet side of the outdoor air duct assembly 31. The motor bracket 32 may provide a mounting support position for the outdoor motor 33.

In some embodiments, as shown in FIGS. 3, 4, and 5, the outdoor portion 102 may include the outdoor air supply assembly 3. The outdoor air supply assembly 3 may include the outdoor motor 33. The outdoor motor 33 is mounted to the motor bracket 32. The outdoor motor 33 may convert electrical energy into mechanical energy.

In some embodiments, as shown in FIGS. 3, 4, and 5, the outdoor portion 102 may include the outdoor air supply assembly 3. The outdoor air supply assembly 3 may include an outdoor fan 34. The outdoor fan 34 is provided at the vent 311, and the outdoor fan 34 is drivingly connected to the outdoor motor 33. The outdoor motor 33 may provide a driving force for the outdoor fan 34.

In some embodiments, as shown in FIGS. 3, 4, and 5, the electric control box 7 may be electrically connected to the outdoor motor 33. The electric control box 7 can adjust the operation of different modes of the air conditioning system accordingly based on the instructions of the user. For example, the electric control box 7 can achieve different working modes, such as an automatic mode, a cooling mode, a heating mode, and a dehumidification mode, by coordinating the working states of the outdoor motor 33 and related heat exchange components.

In some embodiments, as shown in FIGS. 3 and 4, the outdoor air duct assembly 31 is provided with at least one extension arm 312 on a side wall in the direction of the indoor portion 101. The extension arm 312 is connected to the electric control box 7, and the extension arm 312 and the motor bracket 32 together support the electric control box 7.

The electric control box 7 is provided with at least one mounting arm 713 protruding in the direction of the outdoor air duct assembly 31 in a depth direction. The at least one mounting arm 713 is connected to a corresponding extension arm 312.

In some embodiments, the mounting arm 713 and the extension arm 312 are provided with mounting holes, and a connection member penetrates the mounting holes of both the mounting arm and the extension arm to achieve the connection between the electric control box 7 and the outdoor air duct assembly 31.

In some embodiments, as shown in FIGS. 4 and 5, the motor bracket 32 may be connected to the outdoor air duct assembly 31. The electric control box 7 may be mounted to the motor bracket 32. The outdoor motor 33 may be mounted to the motor bracket 32. The outdoor motor 33 may be electrically connected to the electric control box 7. The outdoor fan 34 may be provided in the outdoor air duct assembly 31, and the outdoor fan 34 may be drivingly connected to the outdoor motor 33.

It should be noted that the motor bracket 32 is connected to the outdoor air duct assembly 31, and the electric control box 7 and the outdoor motor 33 are both mounted to the motor bracket 32, so that the mounting versatility of the motor bracket 32 can be improved. The electric control box 7 and the outdoor motor 33 are connected by an electric signal, so that the electric control box 7 can conveniently transmit a control command to the outdoor motor 33, thereby controlling the working state of the outdoor motor 33 and further controlling the running state of the outdoor fan 34.

In some embodiments, as shown in FIGS. 4 and 5, the motor bracket 32 may be connected to the outdoor housing 1. The electric control box 7 may be mounted to the motor bracket 32. The outdoor motor 33 may be mounted to the motor bracket 32. The outdoor motor 33 may be electrically connected to the electric control box 7. The outdoor fan 34 may be provided in the outdoor air duct assembly 31. The outdoor fan 34 is drivingly connected to the outdoor motor 33.

It should be noted that the motor bracket 32 is connected to the outdoor housing 1, and the electric control box 7 and the outdoor motor 33 are both mounted to the motor bracket 32, so that the mounting versatility of the motor bracket 32 can be improved. The electric control box 7 and the outdoor motor 33 are connected by an electric signal, so that the electric control box 7 can conveniently transmit a control command to the outdoor motor 33, thereby controlling the working state of the outdoor motor 33 and further controlling the running state of the outdoor fan 34.

In some embodiments, as shown in FIGS. 4 and 5, the electric control box 7 may be positioned above the outdoor motor 33. The length direction of the electric control box 7 may be aligned with the left-right direction of the window air conditioner 100. The width direction of the electric control box 7 is aligned with the up-down direction of the window air conditioner 100.

In some embodiments, as shown in FIGS. 1 and 2, the length direction of the electric control box 7 may be aligned with the left-right direction of the window air conditioner 100. The left-right direction of the window air conditioner 100 is the left-right direction shown in FIG. 1. The width direction of the electric control box 7 may be aligned with the up-down direction of the window air conditioner 100. The up-down direction of the window air conditioner 100 is the up-down direction shown in FIG. 1. In this way, the depth direction of the electric control box 7 (the dimension in this direction is the shortest) may be aligned with the front-rear direction of the window air conditioner 100. The front-rear direction of the window air conditioner 100 is the front-rear direction shown in FIG. 1.

It should be noted that, compared with the conventional arrangement of the electric control box (for example, lying flat above the outdoor motor bracket), the embodiment of the present disclosure can reduce the volume proportion of the electric control box 7 above the outdoor portion 102, thereby relatively increasing the top air inlet area of the outdoor portion 102. The embodiment of the present disclosure may also allow the external dimensions of the outdoor portion 102 in the front-rear direction to be effectively shortened, thereby increasing the structural compactness of the window air conditioner 100, increasing the packing quantity in the transportation process, and further improving the rationality of the space arrangement thereof.

Accordingly, by providing the window air conditioner 100, on the one hand, the top air inlet area of the outdoor portion 102 can be increased, and on the other hand, the outer dimension of the outdoor portion 102 in the front-rear direction can be shortened, thereby increasing the packing quantity, and thus improving the rationality of the space arrangement.

According to some embodiments of the present disclosure, as shown in FIGS. 4 and 5, the motor bracket 32 may include a base 321. The base 321 may be provided with a mounting hole 322, and the outdoor motor 33 may be mounted to the mounting hole 322. As such, the mounting hole 322 on the base 321 can provide a fixed mounting position for the outdoor motor 33.

In some embodiments, as shown in FIGS. 4 and 5, the motor bracket 32 may include a plurality of connecting arms 323. Each of the plurality of connecting arms 323 is connected to the base 321. The plurality of connecting arms 323 may be disposed at intervals along the circumferential direction of the base 321. The plurality of connecting arms 323 may be connected to the outdoor air duct assembly 31. The plurality of connecting arms 323 are connected between the base 321 and the outdoor air duct assembly 31. This establishes a connective relationship between the base 321 and the outdoor air duct assembly 31, and also enhances the structural strength and torsional rigidity, thereby improving the structural reliability of the motor bracket 32.

In some embodiments, as shown in FIGS. 4 and 5, the electric control box 7 may be mounted on the base 321. For example, the top surface of the base 321 may be configured as a supporting plane 3211, and the electric control box 7 may be in contact with the supporting plane 3211.

It should be noted that the top surface of the base 321 is in contact with a portion of the bottom surface of the electric control box 7. By configuring the top surface of the base 321 as the supporting plane 3211, it is possible to ensure that the load of the electric control box 7 is evenly distributed on the top surface of the base 321, avoid the risk of structural damage caused by local stress concentration, and thus enhance the stability of supporting the electric control box 7 by the base 321.

In some embodiments, as shown in FIGS. 4 and 5, the electric control box 7 may also be mounted on at least one connecting arm 323, with the connecting arm 323 providing support for the electric control box 7.

In some embodiments, as shown in FIGS. 4 and 5, the electric control box 7 may also be mounted on the base 321 and at least one connecting arm 323 at the same time. This configuration distributes the load of the electric control box 7 to the base 321 and the connecting arm 323, improving the stability of the electric control box 7 while also reducing the weight pressure borne individually by the base 321 and the connecting arm 323

In some embodiments, as shown in FIGS. 4 and 5, the plurality of connecting arms 323 may include a first upper connecting arm 324. The first upper connecting arm 324 may be connected to an upper portion of the base 321. The connection between the first upper connecting arm 324 and the base 321 may enhance the connection strength between the base 321 and the outdoor heat exchanger 4.

In some embodiments, as shown in FIGS. 4 and 5, the plurality of connecting arms 323 may include a second upper connecting arm 325. The second upper connecting arm 325 is connected to the upper portion of the base 321. The base 321 can be connected to the outdoor heat exchanger 4 from both sides by means of the second upper connecting arm 325 and the first upper connecting arm 324, thereby further strengthening the strength of the connection with the outdoor heat exchanger 4.

In some embodiments, as shown in FIGS. 4 and 5, the first upper connecting arm 324 and the second upper connecting arm 325 may be located on opposite sides of the base 321.

In some embodiments, as shown in FIGS. 4 and 5, the plurality of connecting arms 323 may include a lower connecting arm 326. The lower connecting arm 326 may be connected to a lower portion of the base 321.

In some embodiments, as shown in FIGS. 4 and 5, the first upper connecting arm 324, the second upper connecting arm 325, and the lower connecting arm 326 may be disposed at intervals along the circumferential direction of the base 321. The first upper connecting arm 324 and the second upper connecting arm 325 may be located on opposite sides of the upper portion of the base 321, respectively. The lower connecting arm 326 may be connected to a lower portion of the base 321. In this way, three connecting arms 323 can be connected at intervals in the circumferential direction of the base 321, forming a stable force-bearing structure having a triangular shape (such as a shape formed by connecting one end of the three connecting arms 323 away from the base 321) between the base 321 and the three connecting arms 323, and thereby enhancing the structural stability of the motor bracket 32.

In some embodiments, as shown in FIGS. 4 and 5, the electric control box 7 may be mounted on at least one of the first upper connecting arm 324 and the second upper connecting arm 325. Since the electric control box 7 is positioned above the motor bracket 32, and the first upper connecting arm 324 and the second upper connecting arm 325 are connected above the base 321, allowing the first upper connecting arm 324 and the second upper connecting arm 325 to be adjacent to each other in a spatial position, at least one of the first upper connecting arm 324 and the second upper connecting arm 325 can provide support to the bottom of the electric control box 7. In this way, the force contact area of the electric control box 7 can be increased, thereby enhancing the uniformity of force distribution on the electric control box 7 and the stability of support provided by the motor bracket 32 to the electric control box 7.

In some embodiments, as shown in FIGS. 4, 5 and 7, the first upper connecting arm 324 is provided with a first mounting portion 327, the electric control box 7 is provided with a second mounting portion 71, and the first mounting portion 327 and the second mounting portion 71 are connected by a fastener. The fastener may be a screw.

It should be noted that the first mounting portion 327 on the first upper connecting arm 324 and the second mounting portion 71 on the electric control box 7 are connected as a whole by the fastener, so that the weight and spatial mode of each other can be increased, thereby improving the structural strength and torsional rigidity. Moreover, the connection mode between the first mounting portion 327 and the second mounting portion 71 is simple and firm, which is convenient for assembly and disassembly, and can improve the connection stability and convenience of assembly and disassembly.

In some embodiments, as shown in FIGS. 4 and 5, the first upper connecting arm 324 may be provided with a limiting portion 328. The limiting portion 328 may be in abutment fit with a surface of one end in the length direction of the electric control box 7. With this arrangement, a limiting effect can be formed on the electric control box 7 in the length direction (that is, the left-right direction) of the electric control box, thereby further improving the positional stability of the electric control box 7 and preventing the risk of the electric control box from falling off or shaking.

In some embodiments, as shown in FIGS. 4 and 5, the top surface of the second upper connecting arm 325 may be provided with a support plate 329. The support plate 329 may be disposed protruding upwards relative to the top surface of the second upper connecting arm 325. The support plate 329 may be supported on the bottom surface of the electric control box 7.

The top surface of the second upper connecting arm 325 is provided with the support plate 329 protruding upwards, and the support plate 329 can be configured to support the bottom surface of the electric control box 7, so that the connection contact area between the motor bracket 32 and the electric control box 7 can be increased, and the force transmission path between the motor bracket 32 and the electric control box 7 can be increased, thereby improving the connection stability and force uniformity of the electric control box 7.

According to some embodiments of the present disclosure, as shown in FIGS. 6, 8, and 9, the electric control box 7 may include an inner box body 72. The inner box body 72 is provided with a plurality of indoor heat dissipation holes 721. The inner box body 72 may be a plastic box body or other box body having a galvanic isolation.

In some embodiments, as shown in FIGS. 8 and 9, the electric control box 7 may include a circuit board 73. The circuit board 73 may be provided in the inner box body 72. The circuit board 73 may be electrically connected to the outdoor motor 33. The circuit board 73 may form a relatively complete circuit system by electrically connecting electronic components (such as resistors, capacitors, transistors, integrated circuits, etc.) together according to a predetermined circuit diagram layout.

In some embodiments, as shown in FIGS. 6, 7, and 8, the electric control box 7 may include an outer box body 74. The outer box body 74 may cover at least a portion of the inner box body 72. The outer box body 74 may be a sheet metal box body or other box body having a galvanic isolation. The outer box body 74 may be provided with a plurality of outdoor heat dissipation holes 741.

In some embodiments, as shown in FIGS. 6, 7, and 8, the plurality of indoor heat dissipation holes 721 on the inner box body 72 and the plurality of outdoor heat dissipation holes 741 on the outer box body 74 may interconnected. In this way, by interconnecting the indoor heat dissipation holes 721 with the outdoor heat dissipation holes 741, a gas flow channel interconnected between the inner box body 72 and the outer box body 74 can be formed. This facilitates air heat exchange between the air inside the inner box body 72 and the external air of the electric control box 7, thereby achieving heat dissipation and cooling effect for the electronic components, and enabling the electronic components to maintain the normal operation.

In some embodiments, as shown in FIGS. 6, 7, and 8, the plurality of indoor heat dissipation holes 721 on the inner box body 72 and the plurality of outdoor heat dissipation holes 741 on the outer box body 74 can be arranged in a staggered manner relative to each other. In this way, by staggering the indoor heat dissipation holes 721 and the outdoor heat dissipation holes 741, the spatial relative positions of the heat dissipation holes on the inner box body 72 and the outer box body 74 can be altered. For example, the indoor heat dissipation holes 721 and the outdoor heat dissipation holes 741 can be staggered in the up-down direction or the left-right direction In this way, it is possible to prevent external rainwater from directly flowing along the outdoor heat dissipation holes 741 on the outer box body 74 to the indoor heat dissipation holes 721 on the inner box body 72, thereby balancing ventilation and heat dissipation performance with waterproofness.

In some embodiments, as shown in FIGS. 6, 7, and 8, the inner box body 72 may be a plastic box body. Plastic features light material, a simple molding process and electrical insulation. In this way, the production cost can be reduced, and the effect of electrical isolation can be achieved, and the risk of conductivity between the electronic components inside the inner box body 72 and the box body can be prevented.

In some embodiments, as shown in FIGS. 6, 7, and 8, the outer box body 74 may be a sheet metal box body. Sheet metal features high material strength, wear resistance and high temperature resistance. As such, the safety protection and fire resistance for the internal structural components can be more effectively improved. Furthermore, the combined use of the plastic inner box body 72 and the sheet metal outer box body 74 can effectively ensure the normal operation of the electronic components.

In some embodiments, as shown in FIGS. 1, 2, and 6, the outdoor portion 102 may include an outdoor housing 1. The indoor portion 101 may include an indoor housing 2. In the up-down direction, the height of the outdoor housing 1 may be greater than the height of the indoor housing 2. A through hole 11 may be formed in a portion of the outdoor housing 1 that is higher than the indoor housing 2. The outer box body 74 may be adjacent to the through hole 11. In this way, the ventilation area can be effectively increased by utilizing the through hole 11 on the portion of the outdoor housing 1 that is exposed to the air, thereby improving the air intake efficiency. Further, since the outer box body 74 is immediately adjacent to the through hole 11, it is possible to prevent the problem of mutual interference between the outer box body 74 and the through hole 11, thereby improving the rationality of the spatial arrangement.

In some embodiments, as shown in FIGS. 1 and 2, an indoor air inlet 21 may be formed on the indoor housing 2. The indoor air may flow from the indoor air inlet 21 to the interior of the indoor housing 2.

In some embodiments, as shown in FIGS. 1 and 2, an indoor air outlet 22 may be formed on the indoor housing 2. The air inside the indoor housing 2 can flow out through the indoor air outlet 22 into the indoor space. The outdoor air supply assembly may be installed in the indoor housing 2. The indoor air supply assembly may be configured to guide the airflow from the indoor air inlet 21 to the indoor air outlet 22. The indoor air supply assembly can draw air in through the indoor air inlet 21 and then expel the air through the indoor air outlet 22 after heat exchange.

In some embodiments, as shown in FIGS. 1 and 2, the outdoor housing 1 may be connected to the indoor housing 2. Since the outdoor housing 1 and the indoor housing 2 are connected to each other as a whole, the weight and spatial mode of each other can be increased, and thus the structural strength and torsional rigidity of each other can be improved.

In some embodiments, as shown in FIGS. 1 and 2, an outdoor air inlet and an outdoor air outlet may be formed on the outdoor housing 1. The outdoor air supply assembly 3 may be installed in the outdoor housing 1, and the outdoor air supply assembly 3 may be configured to guide airflow from the outdoor air inlet to the outdoor air outlet. The outdoor air supply assembly 3 can draw air in through the outdoor air inlet and then expel the air through the outdoor air outlet after heat exchange.

In some embodiments, as shown in FIGS. 1, 3 and 4, the outdoor air duct assembly 31 may be mounted in the outdoor housing 1. Such an arrangement allows the outdoor housing 1 to provide a mounting support position for the outdoor air duct assembly 31. The outdoor air duct assembly 31 may be interconnected with the outdoor air inlet and the outdoor air outlet, respectively. Such an arrangement facilitates the guidance and transport of air from the outdoor air inlet to the outdoor air outlet.

In some embodiments, as shown in FIGS. 1, 8, 9, and 10, the inner box body 72 may include a first box cover 722 and a second box cover 723. The first box cover 722 may be close to the indoor portion 101. The second box cover 723 and the first box cover 722 are connected to each other, and the second box cover 723 may be positioned away from the indoor portion 101.

It should be noted that by connecting the first box cover 722 and the second box cover 723 in the front-rear direction, the inner box body 72 that is easy to assemble and disassemble is formed. This also facilitates the maintenance and replacement of electrical components inside the inner box body 72, thereby improving ease of assembly and disassembly.

In some embodiments, as shown in FIGS. 9 and 10, the edge of one of the first box cover 722 and the second box cover 723 may be provided with a flange 724. The flange 724 may cover the edge of the other of the first box cover 722 and the second box cover 723.

In some embodiments, as shown in FIGS. 11 and 12, the present application further provides an electric control box 7a, and the electric control box 7a has an improved fireproof performance, and can be applied to scenarios with high fire protection requirements. The electric control box 7a is mounted on the motor bracket 32. The length direction of the electric control box 7a aligns with the left-right direction (the width direction) of the window air conditioner 100, the width direction of the electric control box aligns with the up-down direction (height direction) of the window air conditioner, and the depth direction of the electric control box aligns with the front-rear direction (length direction) of the window air conditioner, allowing the electric control box 7a to be vertically positioned on the motor bracket 32. This arrangement reduces the space occupied by the electric control box 7a in the front-rear direction, thereby minimizing the depth of the window air conditioner 100 and reducing the overall size of the window air conditioner 100.

Additionally, as shown in FIGS. 1 and 12, since the electric control box 7a is vertically mounted on the motor bracket 32, the number of fasteners required to connect the electric control box 7a to the outdoor heat exchanger 4 can be reduced to two. Compared to conventional horizontal mounting solutions that require four fasteners, this embodiment reduces the number of fasteners. Correspondingly, only two mounting holes 41a are exposed on the top of the outdoor housing 1, reducing the number of openings in the outdoor housing 1 and improving installation efficiency.

As shown in FIG. 13, the electric control box 7a includes an outer box body 71a, an inner box body 72a, and a circuit board 73a. The circuit board 73a is located inside the inner box body 72a, and the outer box body 71a covers the periphery of the inner box body 72a.

The circuit board 73a includes a board carrier 731a and various electronic components arranged on the board carrier 731a according to a preset circuit diagram, such as resistors, capacitors, transistors, and integrated circuits. Most of the electronic components are mounted on the same side of the board carrier 731a, while the another side of the board carrier is equipped with a plurality of heat sinks 733a.

In some embodiments, the board carrier 731a of the circuit board 73a is provided with a plurality of ventilation holes 732a, allowing airflow between the front and back sides of the board carrier 731a. This enhances air circulation inside the inner box body 72a and improves heat dissipation efficiency.

In some embodiments, the heat sink 733a extends through openings in the inner box body 72a and the outer box body 71a to dissipate heat into the external space of the electric control box 7. The side of the board carrier 731a where the heat sink 733a are mounted is also equipped with a sealing gasket 74a. The sealing gasket 74a is positioned around the periphery of the heat sink 733a. Since the electric control box 7a is vertically mounted, the openings 7226a, 7126a in the inner box body 72a and the outer box body 71a for the heat sink 733a to pass through may result in rainwater from the outside drifting in and penetrating into the area of the circuit board 73a in which other electronic components are mounted, and thus, by providing the sealing gasket 74a at the edge of the heat sink 733a, rainwater is prevented from flowing from the openings to the area of the circuit board 73a in which electronic components are mounted, ensuring a waterproof seal.

In one embodiment, as shown in FIG. 13, the sealing gasket 74a is formed around the periphery of the heat sink 733a, and the sealing gasket 74a is located between the mounting plate 7331a of the heat sink 733a and the inner box body 72a (the second sub-inner box body 722a) to enhance the sealing effect between the mounting plate 7331a and the inner box body 72a.

In some embodiments, as shown in FIGS. 14 and 15, the sealing gasket 74a and the inner box body 72a may be connected by fasteners 741a such as screws. The fasteners 741a may be positioned at the corners of the sealing gasket 74a. For example, the fasteners 741a may be fixed at two opposite corners of the sealing gasket 74a. Alternatively, the fasteners may be fixed at all four corners of the sealing gasket 74a, which can reduce the chance of deformation of the sealing gasket 74a due to being subjected to long-term stress and improve the sealing performance of the sealing gasket 74a, as compared to the option of the fasteners 741a being fixed at the two corners.

Due to size limitations of the circuit board 73a, various areas of the circuit board 73a are typically fully occupied by components, it is difficult to accommodate four fasteners on the circuit board 73a. Through creative thinking, the inventor of the present disclosure put forwards a solution of securing the screws from both the front side and the back side of the circuit board 73a, respectively. For example, as shown in FIG. 15, two of the fasteners 741a securing the sealing gasket 74a are fixed from the front side, while the other two fasteners are secured through the inner box body 72a on the back side of the circuit board 73a, as shown in FIG. 14, so that it is sufficient to open two avoidance holes 7311a in the circuit board 73a as shown in FIG. 13, and it is not necessary to open four avoidance holes 7311a, which minimizes the space occupied by such holes on the circuit board 73a and solves the problem of insufficient space for additional fasteners due to the limitation of the size of the circuit board 73a itself. When installed in this manner, the mounting heads 741a (e.g., screw heads) of the two fasteners are located in the two avoidance holes 7311a of the circuit board 73a, while the mounting heads 741a of the other two fasteners are located on the outer side of the inner box body 72a on the back side of the circuit board 73a. The two fasteners with the mounting heads 741a being located on the front side of the circuit board 73a sequentially pass through the circuit board 73a, the mounting plate 7331a of the heat sink 733a, and the sealing gasket 74a before connecting to the inner box body 72a. The two fasteners with the mounting 741a being located on the back side of the circuit board 73a sequentially pass through the inner box body 72a and the sealing gasket 74a before connecting to the mounting plate 7331a of the heat sink 733a. In this way, it is possible to bring the mounting surface of the heat sink 733a into full contact with the sealing gasket 74a to ensure the sealing effect while reducing the risk of deformation.

It should be noted that the above-mentioned “front side” of the circuit board 73a refers to the side surface of the circuit board 73a facing indoors, while the “back side” of the circuit board 73a refers to the side surface facing outdoors.

In some embodiments, as shown in FIG. 13, the electric control box 7a further includes a sealing frame 75a positioned between the circuit board 73a and the inner box body 72a to enhance the sealing between the circuit board 73a and the inner box body 72a.

In some embodiments, as shown in FIGS. 13 and 16, the inner box body 72a includes a first sub-inner box body 721a and a second sub-inner box body 722a. The first sub-inner box body and the second sub-inner box body are connected to form a box for enclosing the circuit board 73a. The inner box body 72a may be made of plastic. Plastic is characterized by lightweight material, simple molding process and electrical insulation. This not only reduces production costs but also provides an electrical isolation effect.

The inner box body 72a is provided with a plurality of side air inlet holes on one of the surface facing the indoor portion and the another surface facing the outdoor portion, and is provided with a plurality of side heat dissipation holes on the other one of the surface facing the indoor portion and the another surface facing the outdoor portion. For example, as shown in FIG. 13, the surface of the inner box body 72a facing the indoor portion is provided with side air inlet holes 7211a, and the another surface is provided with side heat dissipation holes 7221a. Specifically, the first sub-inner box body 721a is provided with the side air inlet holes 7211a, and the second sub-inner box body 722a is provided with the side heat dissipation holes 7221a. Alternatively, the first sub-inner box body 721a may be provided with the side heat dissipation holes, and the second sub-inner box body 722a may be is provided with the side air inlet holes. This design allows external air to enter the inner box body 72a through the side air inlet holes 7211a, exchange heat with the circuit board 73a, and carry away the generated heat through the side heat dissipation holes 7221a.

In some embodiments, as shown in FIGS. 17 and 18a, the bottom surface of the inner box body 72a may additionally be provided with bottom air inlet holes 7212a, allowing external air to enter from the bottom surface of the inner box body 72a. This increases the amount of air intake and accelerating the heat dissipation rate.

In some embodiments, a plurality of bottom air inlet holes 7212a may be provided. The plurality of bottom air inlet holes 7212a are arranged along either the length or depth direction of the inner box body 72a at spaced intervals. For example, as shown in FIG. 18a, the bottom air inlet holes 7212a may consist of two holes aligned along the depth direction, or two rows spaced along the length direction.

In some implementations, as shown in FIG. 16, since the inner box body 72a is vertically mounted, and the side surfaces of the inner box body 72a is provided with a plurality of side air inlet holes 7211a, rainwater may potentially penetrate through the outer box body 71a into the inner box body 72a. For this reason, the inner box body 72a, specifically the first sub-inner box body 721a, is provided with side water shield ribs 7213a.

The surface of the inner box body 72a facing the indoor portion is defined as the first surface 7215a, while another surface opposing the surface is defined as the second surface 7222a. A plurality of side air inlet holes 7211a are distributed across the first surface 7215a to form an air inlet zone 7214a. The side water shield ribs 7213a are distributed on both sides of the air inlet zone 7214a along the length direction of the inner box 72a and on the top of the air inlet zone 7214a, the side water shield ribs 7213a protrude beyond the plane where the side air inlet holes 7211a are located, creating a protective barrier around the air inlet zone 7214a. In this way, rainwater entering from the outer box body 71a is blocked outside the area enclosed by the side water shield ribs 7213a, preventing rainwater entering the interior of the inner box body 72a through the side air inlet holes 7211a.

In some embodiments, as shown in FIGS. 13 and 18a, the second surface 7222a of the inner box body 72a i.e., the outer surface of the second sub-inner box body 722a also features side water shield ribs 7223a. The side water shield ribs 7223a extend along the width direction of the inner box body 72a, with some of the side water shield ribs 7223a protruding toward the outdoor side. A plurality of side heat dissipation holes 7221a are distributed across the second surface 7222a to form a heat dissipation zone, and a periphery of the heat dissipation zone is similarly surrounded by the side water shield ribs 7223a. The structure and arrangement of the side water shield ribs 7223a are comparable to those on the first surface 7215a, and will not be described in detail herein.

In some embodiments, a plurality of top heat dissipation holes 7216a are also provided on the top surface of the first sub-inner box body 721a of the inner box body 72a, with top water shield ribs 7217a provided around the periphery of the top heat dissipation holes 7216a. The top water shield ribs 7217a extend to a height exceeding the plane of the top heat dissipation holes 7216a. The top water shield ribs 7217a are arranged in a semi-enclosed configuration, with an open side facing the outer box body 71a. This design ensures that even if a small amount of rainwater enters, it can drain through the open side, preventing water accumulation.

In some embodiments, top water shield ribs 7218a are provided on the top surface of the first sub-inner box body 721a of the inner box body 72a, and the top water shield ribs 7218a are provided around the top water shield ribs 7217a and are spaced a predetermined distance from the top water shield ribs 7217a. The top water shield ribs 7218a protrude higher from the top surface than the top water shield ribs 7218a. This configuration enables the top water shield ribs 7218a to intercept most of incoming rainwater at the periphery of the top water shield ribs 7218a, while the top water shield ribs 7217a provide secondary protection against any residual rainwater, creating a dual waterproofing mechanism.

As shown in FIG. 18a, a rainwater drainage channel 72181a is formed between the top water shield ribs 7218a and a top mating portion 7219a. Rainwater entering from the outer box body 71a flows out through the rainwater drainage channel 72181a to both left and right sides. A small amount of rainwater may flow toward the top heat dissipation holes 7216a through the gaps between the top water shield ribs 7218a and the outer box body 71a. In this case, the top water shield ribs 7217a block the rainwater from flowing toward the top heat dissipation holes 7216a, instead directing rainwater to flow through the channels formed between the top water shield ribs 7218a and the top water shield ribs 7217a. This prevents rainwater from entering the inner box body 72a through the top heat dissipation holes 7216a. Thus, the dual-layer rib configuration significantly enhances waterproof performance.

In some embodiments, the side water shield ribs may be installed only on the first surface of the inner box body 72a, while the second surface 7222a may remain without such ribs. Alternatively, both the first and second surfaces may be provided with the side water shield ribs to further improve waterproof performance.

As shown in FIGS. 13 and 18a, the outer box body 71a includes a first sub-outer box body 711a and a second sub-outer box body 712a. The first sub-outer box body 711a and the second sub-outer box body 712a are spliced together to encase the inner box body 72a. As shown in conjunction with FIGS. 13 and 18b, a side surface 7111a of the outer box body 71a facing the indoor portion 101 is a closed surface, another side surface 7121a opposite the side surface 7111a is provided with an opening 7126a for the heat sink 733a to pass through, and the remaining area of the another side surface 7121a is a closed surface. That is, no heat dissipation holes or air inlet holes or the like are provided on the surfaces of the side surface and the another side surface 7121a. Herein, the side surface and the another side surface 7121a refer to the two side surfaces perpendicular to the depth direction of the electric control box 7a.

It should be specifically noted that the “remaining area” of the another side surface 7121a refers to all areas except the opening 7126a for the heat sink 733a to pass through. In other words, aside from opening 7126a, no other ventilation holes exist on the side surface 7121a.

In some embodiments, as shown in FIG. 17, the outer box body 71a further includes two lateral surfaces 715a perpendicular to the length direction of the electric control box 7. The two lateral surfaces 715a are connected to the side surface 7111a. Both lateral surfaces 715a are closed surfaces, indicating no opening are provided. That is, after the first sub-outer box body 711a and the second sub-outer box body 712a are assembled, the lateral surfaces 715a along the length direction are also closed surfaces. In this way, the sealing of the outer box body 71a can be enhanced, improving both fireproof and waterproof performance.

As shown in FIGS. 18a and 18b, the first sub-outer box body 711a and the second sub-outer box body 712a form an air outlet gap 713a along the height direction of the outdoor housing 1 and near the side of the outdoor housing 1. That is, the air outlet gap 713a is formed at the mating interface between the first sub-outer box body 711a and the second sub-outer box body 712a at the top. Hot air is discharged through the air outlet gap 713a, and the exhausted hot air is further discharged outdoors through the through hole 11 in the outdoor housing 1. The air outlet gap 713a is the assembly gap between the first sub-outer box body 711a and the second sub-outer box body 712a along the length direction.

In some embodiments, as shown in FIGS. 18a and 18b, the top folded edge 7225a of the second sub-inner box body 722a and the top mating portion 7219a of the first sub-inner box body 721a are positioned within the air outlet gap 713a formed between the first sub-outer box body 711a and the second sub-outer box body 712a. The air outlet gap 713a is partially shielded by the top folded edge 7225a and top mating portion 7219a of the inner box body 72a, which appropriately reduces the opening size of the air outlet gap 713a and decreases rainwater ingress.

As shown in FIG. 19, at least one air inlet hole 714a is provided at the bottom of the outer box body 71a. There may be a plurality of air inlet holes 714a, and the plurality of air inlet holes 714a are arranged at intervals along the length direction of the outer box body 71a. The air inlet holes 714a may be located at the bottom of either the second sub-outer box body 712a or the first sub-outer box body 711a.

As shown in FIG. 18a with arrows indicating airflow direction, under the action of the fan, external air (outdoor air) enters through the air inlet holes 714a at the bottom of the outer box body 71a, flowing into the gap between the inner box body 72a and the outer box body 71a. The air then enters the inner box body 72a through the bottom air inlet holes 7212a and the side air inlet holes 7211a at the bottom of the inner box body 72a, to exchange heat with heat-generating components on the circuit board 73a. After heat exchange, part of the heated air exits through top heat dissipation holes 7216a at the top of the inner box body 72a via chimney effect, being discharged upward through the top air outlet gap 713a. The rest of the heated air flows out through the side heat dissipation holes 7221a of the inner box body 72a into the gap between the inner box body 72a and the outer box body 71a, then rises and exits through the top air outlet gap 713a.

As described above, since the outer box body 71a is not provided with corresponding heat dissipation holes or air inlet holes on its side surfaces, even if the circuit board 73a catches fire due to unexpected circumstances, the flames will not spread outward, effectively containing the fire within the electric control box 7a. This design provides excellent fireproof performance. Furthermore, part of the hot air is first discharged through the side heat dissipation holes 7221a on the side of the inner box body 72a before being exhausted through the top of the outer box body 71a. By altering the hot air's flow path and increasing its bending path, which can effectively prevent flames from directly escaping outward, reduce fire intensity and enhance fireproof performance.

In one embodiment, the outer box body 71a may be made of a metal material with good heat dissipation properties, such as sheet metal. because the outer box body 71a has good heat dissipation performance itself, so that the heat-generating components on the circuit board 73a, in addition to being dissipated by air flow, may also be dissipated by conduction through the outer box body 71a.

In another embodiment, as shown in FIG. 20, the window air conditioner 100 further includes an outdoor heat exchanger 4. A blank area 7b is maintained between the electric control box 7a and the outdoor heat exchanger 4, indicating that there are no obstructions between the electric control box 7a and the outdoor heat exchanger 4. This ensures smooth airflow and promotes efficient heat dissipation.

In some embodiments, as shown in FIG. 1, the outdoor housing 1 features a through hole 11 on the side facing indoors, and grilles 11a are provided on both sides along its width direction and at the top of the outdoor housing 1. The grilles 11a may serve as either air inlet grilles. External air can enter the electric control box 7a through the air inlet grilles and through hole 11 to exchange heat with the heat-generating components, or external air can directly exchange heat with the outer box body 71a of the electric control box 7a. The heated air after heat exchange is then discharged through air outlet grilles on a backside of the outdoor housing 1, lowering the temperature of the electric control box 7a. This arrangement increases air inlet volume and accelerates the heat dissipation rate of the electric control box 7a

For example, the peripheral edge of the first box cover 722 may be provided with the flange 724, and the flange 724 may cover the edge of the second box cover 723, so that foreign matter (such as rain, dust, etc.) outside the inner box body 72 can be shielded, and external foreign matter can be prevented from directly entering the inner box body 72 through the gap between the first box cover 722 and the second box cover 723, thereby providing a protective effect. In addition, the flange 724 can also enhance the structural strength and bending and torsional rigidity of the first box cover 722 to a certain extent, thereby improving the structural reliability of the first box cover 722.

As another example, the peripheral edge of the second box cover 723 may be provided with the flange 724, and the flange 724 may cover the edge of the first box cover 722.

In some embodiments, as shown in FIGS. 9 and 10, the inner box body 72 may be provided with a water shield 725 around the indoor heat dissipation holes 721. The water shield 725 may be configured to block rainwater from entering the indoor heat dissipation holes 721. In this way, by providing a water shield 725 that protrudes outwards around the indoor heat dissipation holes 721 through the inner box body 72, the water shield 725 can prevent rainwater from flowing along the outer surface of the inner box body 72 to the indoor heat dissipation holes 721. This avoids the risk of rainwater entering the electric control box 7 through the indoor heat dissipation holes 721 and causing a short circuit on the circuit board 73, thereby enhancing the waterproofness and safety of the electric control box 7.

As shown in FIGS. 1 and 2, according to some embodiments of the present disclosure, the window air conditioner 100 may include an indoor portion 101 and an outdoor portion 102. The indoor portion 101 and the outdoor portion 102 are connected by a pipeline to transmit a refrigerant. The indoor portion 101 may include an indoor heat exchanger and an indoor fan. The outdoor portion 102 may include a compressor, a four-way valve, an outdoor heat exchanger 4, an outdoor fan, and an expansion valve. The compressor, the outdoor heat exchanger 4, the expansion valve and the indoor heat exchanger are sequentially connected to form a refrigerant circuit, and the refrigerant circulates and flows in the refrigerant circuit, and exchanges heat with the air through the outdoor heat exchanger 4 and the indoor heat exchanger respectively to achieve the cooling mode or the heating mode of the air conditioner.

In some embodiments, the compressor may be configured to compress the refrigerant such that the low-pressure refrigerant is compressed to form the high-pressure refrigerant.

In some embodiments, as shown in FIG. 2, the outdoor heat exchanger 4 may be configured to transfer heat between outdoor air and refrigerant circulating through the outdoor heat exchanger 4. For example, the outdoor heat exchanger 4 operates as a condenser in the cooling mode of the air conditioner, so that the refrigerant compressed by the compressor is condensed by dissipating heat to the outdoor air through the outdoor heat exchanger 4. The outdoor heat exchanger 4 operates as an evaporator in the heating mode of the air conditioner, so that the refrigerant after being pressurized absorbs the heat of the outdoor air through the outdoor heat exchanger 4 and evaporates.

In some embodiments, as shown in FIG. 2, the outdoor heat exchanger 4 may further include heat exchange fins to expand the contact area between the outdoor air and the refrigerant transmitted in the outdoor heat exchanger 4, thereby improving the efficiency of heat exchange between the outdoor air and the refrigerant.

In some embodiments, as shown in FIGS. 2 and 4, the outdoor fan 34 may be configured to draw outdoor air into the outdoor portion through an air inlet of the outdoor portion, and expel the outdoor air after heat exchange with the outdoor heat exchanger 4 through an air outlet of the outdoor portion. The outdoor fan 34 provides power for the flow of outdoor air.

In some embodiments, an expansion valve may be connected between the outdoor heat exchanger 4 and the indoor heat exchanger. The pressure of the refrigerant flowing through the outdoor heat exchanger 4 and the indoor heat exchanger is adjusted by the opening of the expansion valve, to adjust the flow of the refrigerant between the outdoor heat exchanger 4 and the indoor heat exchanger. The flow and pressure of the refrigerant circulating between the outdoor heat exchanger 4 and the indoor heat exchanger will affect the heat exchange performance of the outdoor heat exchanger 4 and the indoor heat exchanger. The expansion valve may be an electronic valve. The opening of the expansion valve is adjustable to control the flow and pressure of the refrigerant flowing through the expansion valve.

In some embodiments, the four-way valve may be connected to the refrigerant circuit, and the four-way valve is configured to switch the flow direction of the refrigerant in the refrigerant circuit to enable the air conditioner to operate in either the cooling mode or the heating mode.

In some embodiments, the indoor heat exchanger may be configured to exchange heat between indoor air and the refrigerant circulating within the indoor heat exchanger. For example, in the cooling mode of the air conditioner, the indoor heat exchanger operates as an evaporator, allowing the refrigerant that has cooled in the outdoor heat exchanger 4 to absorb heat from indoor air as the refrigerant evaporates when passing through the indoor heat exchanger. In the heating mode of the air conditioner, the indoor heat exchanger operates as a condenser, allowing the refrigerant that has heated in the outdoor heat exchanger 4 to dissipate heat to the indoor air as the refrigerant condenses when passing through the indoor heat exchanger.

In some embodiments, the indoor heat exchanger may further include heat exchange fins to expand a contact area between the indoor air and the refrigerant transmitted in the indoor heat exchanger, thereby improving heat exchange efficiency between the indoor air and the refrigerant.

In some embodiments, the indoor fan may be configured to draw indoor air into the indoor portion through an air inlet of the indoor portion, and to expel the indoor air after heat exchange with the indoor heat exchanger through an air outlet of the indoor portion. The indoor fan provides power for the flow of air in the indoor space.

In some embodiments, as shown in FIGS. 3 and 4, the air conditioner may include a control device. The control device may be configured to control an operating frequency of the compressor, an opening degree of the expansion valve, a rotational speed of the outdoor fan 34, and a rotational speed of the indoor fan. The control device is connected to the compressor, the expansion valve, the outdoor fan 34 and the indoor fan through data lines to transmit communication information.

In some embodiments, the control device includes a processor. The processor may include a central processing unit (CPU), a microprocessor (microprocessor), an application specific integrated circuit (ASIC), and may be configured to perform respective operations described in the control device when the processor executes a program stored in a non-transitory computer-readable medium coupled to the control device. The non-transitory computer-readable storage medium may include a magnetic storage device (e.g., a hard disk, floppy disk, or magnetic tape), a smart card, or a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a keyboard drive).

According to some embodiments of the present disclosure, a window air conditioner 100 is further provided. The window air conditioner 100 can effectively reduce the space occupied by the indoor heat exchanger 6 while ensuring the heat exchange area, thereby achieving the effect of reducing the size of the indoor portion 101 in the height direction. Compared to conventional designs where the indoor heat exchanger is vertically arranged, the embodiments of the present disclosure reduce the height of the indoor heat exchanger, decrease the overall footprint of the window air conditioner, and minimize its impact on the user's indoor space.

As shown in FIGS. 21, 23, and 23, in some embodiments of the present disclosure, the window air conditioner 100 may include an indoor portion 101 and an outdoor portion 102. The indoor portion 101 is located indoors. The outdoor portion 102 is located outdoors.

In some embodiments, as shown in FIGS. 24 and 25, the indoor portion 101 may include an indoor housing 2. The indoor housing 2 may serve to protect and support the internal structure thereof.

In some embodiments, as shown in FIGS. 25 and 27, the indoor portion 101 may include an indoor air supply assembly 5. The indoor air supply assembly 5 can deliver the heat-exchanged air indoors.

In some embodiments, as shown in FIGS. 24 and 25, the outdoor portion 102 may include an outdoor housing 1. The outdoor housing 1 may serve to protect and support the internal structure thereof.

In some embodiments, as shown in FIGS. 24 and 25, the outdoor portion 102 may include an outdoor air supply assembly 3. The outdoor air supply assembly 3 may deliver the heat-exchanged air outdoors.

In some embodiments, as shown in FIGS. 25 and 27, the indoor portion 101 may include an indoor heat exchanger 6. The indoor heat exchanger 6 can achieve heat exchange and transfer by utilizing the temperature difference between fluids (such as refrigerant and air).

In some embodiments, as shown in FIGS. 23, 24, and 26, the height of the indoor portion 101 may be less than the height of the outdoor portion 102. This allows for a reduction in the height dimension of the indoor portion 101 and decreases the indoor space occupied, thereby improving the utilization rate of indoor space. By lowering the height of the indoor portion 101, the indoor portion sits closer to the window sill when the window is lowered. This positioning helps to better isolate outdoor noise, enhancing the noise reduction effect.

In some embodiments, as shown in FIGS. 27 and 29, the indoor heat exchanger 6 may include a first heat exchanger 61. The first heat exchanger 61 may be provided inclined downwards in the front-rear direction. The first heat exchanger 61 may be provided inclined downwards in a direction from the indoor to the outdoor.

In some embodiments, as shown in FIGS. 27 and 29, the indoor heat exchanger 6 may include a second heat exchanger 62. The front end of the second heat exchanger 62 may be connected to the rear end of the first heat exchanger 61. The second heat exchanger 62 may be provided inclined upwards in the front-rear direction. The second heat exchanger 62 may be provided inclined upwards in a direction from the indoor to the outdoor.

Since the first heat exchanger 61 and the second heat exchanger 62 are respectively inclined and connected to each other instead of a single plate design, the space occupied by the indoor heat exchanger 6 can be effectively reduced while ensuring the heat exchange area. This achieves the effect of reducing the height dimension of the indoor housing 2. The height direction of indoor housing 2 is the up-down direction in FIG. 27.

In some embodiments, as shown in FIGS. 25 and 27, the bottom of the outdoor portion 102 may be formed with the mounting plane 13. The angle between the leeward side of the first heat exchanger 61 and the mounting plane 13 may be α, and α may satisfy the relation: α≥43°. By setting α≥43°, it is possible to ensure that the condensed water on the first heat exchanger 61 smoothly flows along the surface of the fin into the water collection tray, and avoid the problems of water dripping in the midair and blocking the fin ventilation.

In some embodiments, as shown in FIG. 27, α may satisfy the relation: α≤45°. By setting α≤45°, under a certain height limit, the heat exchange area on the first heat exchanger 61 may also be effectively increased, thereby simultaneously ensuring the heat exchange efficiency and the space arrangement utilization rate on the first heat exchanger 61.

In some embodiments, as shown in FIG. 27, α may satisfy the relation: 43°≤α≤45°. For example, α may be 43°, 44°, and 45°, but is not limited thereto. By setting 43°≤α≤45°, on the one hand, it is possible to ensure that the condensed water on the first heat exchanger 61 flows smoothly along the surface of the fins into the water collection tray, avoiding problems such as dripping water in the midair and blocking the ventilation of the fins. On the other hand, under a certain height limit, the heat exchange area on the first heat exchanger 61 can be effectively increased, thereby simultaneously ensuring the heat exchange efficiency and the space arrangement utilization rate on the first heat exchanger 61.

In some embodiments, as shown in FIG. 27, the angle between the leeward side of the second heat exchanger 62 and the mounting plane 13 may be β. β may satisfy the relation: β≥45°. By setting β≥45°, it is possible to ensure that the condensed water on the second heat exchanger 62 smoothly flows along the surface of the fin into the water collection tray, and avoid the problems of water dripping in the midair and blocking the fin ventilation.

In some embodiments, as shown in FIG. 27, β may satisfy the relation: β≤48°. By setting β≤48°, under a certain height limit, the heat exchange area on the second heat exchanger 62 may also be effectively increased, thereby simultaneously ensuring the heat exchange efficiency and the space arrangement utilization rate on the second heat exchanger 62.

In some embodiments, as shown in FIG. 27, β may satisfy the relation: 45°≤β≤48°. For example, β may be 45°, 46°, and 48°, but is not limited thereto. By setting 45°≤β≤48°, on the one hand, it is possible to ensure that the condensed water on the second heat exchanger 62 flows smoothly along the surface of the fins into the water collection tray, avoiding problems such as dripping water in the midair and blocking the ventilation of the fins. On the other hand, under a certain height limit, the heat exchange area on the second heat exchanger 62 may also be effectively increased, thereby simultaneously ensuring the heat exchange efficiency and the space arrangement utilization rate on the second heat exchanger 62.

Accordingly, with the arrangement of the window air conditioner 100, it is possible to effectively reduce the space occupied by the indoor heat exchanger 6 while ensuring the heat exchange area, thereby achieving the effect of reducing the dimension of the indoor portion 101 in the height direction.

According to some embodiments of the present disclosure, as shown in FIGS. 27 and 29, the distance from the front end to the rear end of the first heat exchanger 61 may be greater than the distance from the front end to the rear end of the second heat exchanger 62. The front end of the first heat exchanger 61 may be higher than the rear end of the second heat exchanger 62. As described above, the heat exchange area of the first heat exchanger 61 may be greater than the heat exchange area of the second heat exchanger 62. Since the first heat exchanger 61 is closer to the indoor air inlet 21, the effective area of the indoor heat exchanger 6 directly facing the wind blown from the indoor air inlet 21, that is, the heat exchange area of the first heat exchanger 61, can be increased, thereby effectively improving the heat exchange efficiency.

According to some embodiments of the present disclosure, as shown in FIGS. 24 and 27, the indoor portion 101 may include an indoor air duct assembly 51. The indoor air supply assembly 5 may include the indoor air duct assembly 51. An indoor air inlet 21 and an indoor air outlet 22 may be formed in the indoor housing 2. The indoor air duct assembly 51 may be located between the first heat exchanger 61, the second heat exchanger 62, and the indoor air outlet 22. The indoor air supply assembly 5 is installed in the indoor housing 2, and may be configured to guide airflow from the indoor air inlet 21 to the indoor air outlet 22. The indoor air duct assembly 51 is a main structural member constituting the air duct, that is, the indoor air duct assembly defines a channel through which the blown air flows.

In some embodiments, as shown in FIGS. 24 and 27, the indoor portion 101 may include an indoor fan 53. The indoor air supply assembly 5 may include the indoor fan 53. The indoor fan 53 may be provided in the indoor air duct assembly 51. For example, the indoor fan 53 may be a cross-flow indoor fan 53. In some embodiments, as shown in FIGS. 24 and 27, the indoor portion 101 may include an indoor motor. The indoor fan 53 may be drivingly connected to the indoor motor. The indoor motor serves as the power source and provides a driving force to the indoor fan 53. The indoor motor drives the indoor fan 53 to rotate. The air that has undergone heat exchange in the first heat exchanger 61 and the second heat exchanger 62 is drawn into the indoor fan 53 and, guided by the indoor air duct assembly 51, flows to the indoor air outlet 22, thereby generating airflow with a relatively high wind speed and volume.

In some embodiments, as shown in FIG. 27, the rear end of the first heat exchanger 61 may be located directly below the indoor fan 53. The length direction of the indoor heat exchanger 6 may be parallel to the central axis direction of the indoor fan 53. Since the rear end of the first heat exchanger 61 is connected to the front end of the second heat exchanger 62, the indoor fan 53 is positioned directly above the rear end of the first heat exchanger 61. In this way, it is possible to ensure that the indoor fan 53 maintains a close distance to both the first heat exchanger 61 and the second heat exchanger 62, thereby improving space compactness. Additionally, it is also possible to avoid the distance from the indoor fan 53 to one of the first heat exchanger 61 and the second heat exchanger 62 being too far, thereby improving uniform and consistent heat exchange.

In some embodiments, as shown in FIGS. 27, 28, and 31, the indoor air duct assembly 51 may be a volute casing. The volute casing may have a volute tongue 511. The volute casing may be located at the rear bottom of the indoor air outlet 22. The volute casing is usually used in conjunction with the cross-flow indoor fan 53. The indoor fan 53 is also referred to as a cross-flow fan. The volute casing can play the effect of guiding the airflow and improving the efficiency of the indoor fan 53. The volute casing usually has a spiral or semi-spiral shape, which helps in the smooth introduction and acceleration of airflow.

For example, the end of the volute casing near the indoor heat exchanger 6 serves as the air inlet, and the air that has undergone heat exchange in the indoor heat exchanger 6 smoothly enters the interior of the volute casing through the air inlet. After the air enters the volute casing, the airflow is accelerated and directed in a specific direction through the geometry changes inside the volute casing. One end of the volute casing close to the indoor air outlet 22 is an air outlet, and the airflow is discharged through the air outlet. The design of the air outlet typically takes into account the distribution and direction of the airflow to improve the uniformity and efficiency of the airflow.

In some embodiments, when air is accelerated through the impeller of the cross-flow indoor fan 53, the volute casing further accelerates the airflow through the gradually contracting cross section of the volute casing. The shape of the volute casing enables the airflow to spread smoothly outward from the center of the impeller and to move along the spiral path of the volute casing, through which the airflow passes converging at the outlet of the volute casing to form a directional airflow.

In some embodiments, the volute casing is capable of reducing vortex and turbulence of the airflow, thereby reducing noise. The volute casing can also improve the airflow efficiency of the cross-flow indoor fan 53, making the airflow more uniform and directional.

In some embodiments, as shown in FIGS. 27, 28, and 29, the volute tongue 511 may be a protruding structure located at the outlet of the volute casing. The volute tongue 511 is typically close to the end of the volute casing. The design of the volute tongue 511 can further optimize the distribution and direction of the airflow, thereby further improving the efficiency of the cross-flow fan. The volute tongue 511 can also reduce irregular fluctuations of airflow and improve the operating stability of the cross-flow fan. In addition, the volute tongue 511 can reduce the impact noise generated when the airflow passes through the air outlet of the volute casing, and can also reduce the vortex of the airflow at the air outlet, and improve the uniformity of the airflow, thereby improving the overall efficiency of the indoor fan 53 and reducing the energy loss.

In some embodiments, when the indoor fan 53 is a cross-flow fan, the cross-flow fan can draw in air by rotating the impeller and expel the air along the direction of the volute casing using centrifugal force. This enables the cross-flow fan to generate a uniform airflow and maintain a high air volume at a lower rotational speed, thereby reducing noise and improving efficiency. The core component of the cross-flow fan is the impeller, which is typically composed of elongated centrifugal blades. The impeller has a relatively small diameter and a significantly greater length. The blades of the impeller are similar in shape to those of a propeller, but are longer and flattened, typically forward curve multi-wing blades. This design of the impeller allows air to be drawn in from one end of the impeller and discharged from the other end along the axial direction.

When the air enters from one side of the cross-flow fan, the cross-flow fan is accelerated by the multi-wing blades of the impeller, and then discharged along the direction perpendicular to the axis of the impeller. The entry and discharge of airflow are perpendicular to the axis of the impeller, that is, the air flows in a direction perpendicular to the axis when entering and leaving the cross-flow fan.

In some embodiments, the indoor motor may drive the impeller of the indoor fan 53 to rotate. When the impeller of the indoor fan 53 rotates, the air is sucked in and compressed and accelerated along the axial direction, and as the rotational speed of the impeller increases, the airflow speed also increases, thereby increasing the air volume and the air pressure.

In some embodiments, when the indoor fan 53 is a cross-flow fan, the airflow generated by the cross-flow fan is characterized by large air volume, low wind pressure, low rotational speed, and low noise. Due to the shape and arrangement of the blades of the cross-flow fan, the air will be pushed toward the interior of the duct, creating a high-pressure area. The constant formation and change of the high-pressure area force the air to flow, thus forming airflow.

In some embodiments, as shown in FIGS. 25, 28, and 29, the window air conditioner 100 may include an air guide plate 8. The air guide plate 8 is provided at the indoor air outlet 22. The air guide plate 8 can be selectively rotated relative to the indoor housing 2. The air guide plate 8 can be configured to adjust the air outlet angle of the indoor air outlet 22.

It should be noted that the air guide plate 8 is mainly configured to control the flow direction and intensity of the air blown out of the indoor air outlet 22. For example, users can adjust the position of the air guide plate 8 according to the user's needs to control the direction of airflow, preventing cold or warm air from directly blowing to the human body, and enhancing the comfort of wind feeling. As another example, the air guide plate 8 can help to distribute air more evenly and widely to the indoor space, avoid local supercooling or overheating, and improve air circulation efficiency. For another example, appropriately adjusting the air guide plate 8 can reduce the noise generated by the airflow and improve the user experience.

In some embodiments, as shown in FIGS. 27 and 28, there may be an angle γ between the volute tongue 511 and the mounting plane 13. γ can satisfy the relation: γ≥0°. By setting γ≥0°, the air supply distance can be increased, and the invalid loss air volume of the air supply can be reduced, thereby improving the air supply efficiency.

In some embodiments, as shown in FIGS. 27 and 28, γ may satisfy the relation: γ≤5°. By setting γ≤5°, it is possible to maintain a substantially parallel relationship between the volute tongue 511 and the mounting plane 13, so that the blown air can be smoothly blown out along the air outlet of the volute casing.

In some embodiments, as shown in FIGS. 27 and 28, γ may satisfy the relation: 0°≤γ≤5°. For example, the angle γ between the volute tongue 511 and the mounting plane 13 may be 0°, 1°, 2°, 3°, and 5°, but is not limited thereto. In this way, by setting 0°≤γ≤5°, it is possible to maintain a substantially parallel relationship between the volute tongue 511 and the mounting plane 13, so that the blown air can be smoothly blown out along the air outlet of the volute casing, and it is also possible to increase the air supply distance and reduce the invalid loss air volume, thereby improving the air supply efficiency.

In some embodiments, as shown in FIGS. 27 and 28, the angle between the air guide plate 8 and the volute tongue 511 may be δ. δ can satisfy the relation: δ≥30°. By setting δ≥30°, it is possible to achieve a greater range of forward and upward air delivery of the air blowing out of the air guide plate 8.

In some embodiments, as shown in FIGS. 27 and 28, δ may satisfy the relation: δ≤40°. By setting δ≤40°, the air supply coverage area of the air guide plate 8 can be increased.

In some embodiments, as shown in FIGS. 27 and 28, δ may satisfy the relation: 30°≤δ≤40°. By setting 30°≤δ≤40°, the range of forward and upward air delivery of the air blowing out of the air guide plate 8 can be widened, and the air supply coverage of the air guide plate 8 can also be increased.

In some embodiments, as shown in FIG. 29, the indoor air duct assembly 51 may have an air duct inlet 512 and an air duct outlet 513. The air duct inlet 512 faces the first heat exchanger 61 and/or the second heat exchanger 62. For example, the indoor air duct assembly 51 is formed with the air duct inlet 512 toward the first heat exchanger 61 and the second heat exchanger 62. The air duct inlet 512 may serve as an inlet for the airflow, after heat exchange, to enter the interior of the indoor air duct assembly 51.

In some embodiments, as shown in FIG. 29, the indoor air duct assembly 51 may have an air duct outlet 513. The air duct outlet 513 faces the indoor air outlet 22. For example, the indoor air duct assembly 51 is formed with an air duct outlet 513 facing the indoor air outlet 22, and the air duct outlet 513 may serve as an outlet for the airflow to leave the indoor air duct 51 after heat exchange.

In some embodiments, as shown in FIGS. 29 and 30, the lowest point of the air duct inlet 512 may be lower than the highest point of the rear end of the second heat exchanger 62. In this way, it is possible to ensure that the airflow drawn in by the air duct inlet 512 near the second heat exchanger 62 is the airflow after heat exchange in the second heat exchanger 62, thereby ensuring the temperature uniformity and consistency of the heat-exchanged airflow in the indoor air duct assembly 51 and improving heat exchange efficiency.

In some embodiments, as shown in FIGS. 29, 30, 31, and 32, the indoor air duct assembly 51 may include an air duct main body 514. The indoor fan 53 may be provided in the air duct main body 514 and form the air duct outlet 513. The indoor fan 53 may be provided at one end of the air duct main body 514 close to the second heat exchanger 62. The end of the air duct main body 514 away from the indoor fan 5 may form the air duct outlet 513. The indoor fan 53 is arranged in the air duct main body 514, and the indoor fan 53 can generate a centrifugal force on the airflow, thereby transmitting the airflow at the air duct inlet 512 to the air duct outlet 513.

In some embodiments, as shown in FIGS. 29, 30, 31, and 32, the indoor air duct assembly 51 may include a transition section 515. One end of the transition section 515 may be connected to the end of the air duct main body 514 close to the second heat exchanger 62. The transition section 515 may be arcuate and protrude in a direction towards the indoor fan 53.

In some embodiments, as shown in FIGS. 29, 30, 31, and 32, the indoor air duct assembly 51 may include an arc-shaped section 516. The arc-shaped section 516 may be connected to the other end of the arc-shaped transition section 515. The arc-shaped section 516 may be connected to the end of the transition section 515 away from the air duct main body 514. The air duct inlet 512 may be formed between the arc-shaped section 516 and the air duct main body 514. The arc-shaped section 516 may protrude in a direction away from the indoor fan 53. The arc-shaped section 516 may be positioned in front of the second heat exchanger 62.

A backflow is formed when the indoor fan 53 drives the airflow on the air duct main body 514 close to the duct inlet 512, resulting in a noise problem. By adding the arc-shaped section 516 away from the indoor fan 53, on the one hand, the length of the air duct main body 514 on the side close to the second heat exchanger 62 can be extended. On the other hand, the arc-shaped section 516 can be made as close to the second heat exchanger 62 as possible, reducing the gap between the arc-shaped section 516 and the leeward side of the second heat exchanger 62. This enhances the guiding effect of the airflow, thereby reducing the risk of noise caused by airflow channeling and counter-flow.

In some embodiments, as shown in FIGS. 29, 30, and 32, the indoor portion 101 may include a baffle 54. The baffle 54 may be connected to the rear of the indoor air duct assembly 51. The baffle 54 may be located above the rear end of the second heat exchanger 62. The baffle 54 may be configured to block the upward flow of airflow, and the baffle 54 may block the above rainwater from falling into the second heat exchanger 62.

By providing the baffle 54 above the rear end of the second heat exchanger 62, on the one hand, it is possible to prevent the air that has undergone heat exchange in the second heat exchanger 62 from flowing upwards and forming a dew condensation. On the other hand, it is possible to prevent external water droplets from entering the interior of the indoor housing 2 and dripping onto the second heat exchanger 62, thereby improving the waterproofness and safety of the interior of the window air conditioner 100.

In some embodiments, as shown in FIGS. 29 and 30, the baffle 54 may include a first section 541. One end of the first section 541 may be connected to the rear of the indoor air duct assembly 51. The first section 541 may extend obliquely downwards in a front-rear direction.

In some embodiments, as shown in FIGS. 19 and 20, the baffle 54 may include a second section 542. The second section 542 is connected to the other end of the first section 541. The first section 541 may extend obliquely downwards in a front-rear direction. The lowest point of the second section 542 may be lower than the highest point of the rear end of the second heat exchanger 62. With the aforementioned arrangement, the first section 541 can be designed to match the outer contour of the second heat exchanger 62 and extend downward in a conformal manner. The second section 542 can then be bent to change the direction of extension from the first section 541, thereby increasing the protective area over the second heat exchanger 62. This ensures that water droplets, after flowing into the interior of the indoor housing 2, cannot drip onto the second heat exchanger 62.

In some embodiments, as shown in FIGS. 24, 24, and 27, the outdoor portion 102 may include an outdoor housing 1. The outdoor housing 1 is connected to the rear of the indoor housing 2.

In some embodiments, as shown in FIGS. 24 and 29, the indoor housing 2 may include a first top plate 23, a second top plate 24, and a third top plate 25. The first top plate 23 is disposed horizontally,

In some embodiments, as shown in FIGS. 24 and 29, the indoor housing 2 may include the second top plate 24. The front end of the second top plate 24 may be connected to the first top plate 23. The second top plate 24 may extend obliquely downwards in a front-rear direction. The second top plate 24 may be arranged extending obliquely downwards from the rear end of the first top plate 23.

In some embodiments, as shown in FIGS. 24 and 29, the indoor housing 2 may include the third top plate 25. The third top plate 25 may be disposed horizontally. The front end of the third top plate 25 may be connected to the rear end of the second top plate 24. The rear end of the third top plate 25 may be connected to the outdoor housing 1.

In some embodiments, as shown in FIGS. 24 and 27, the outdoor housing 1 and the indoor housing 2 may be integrally connected to each other. The weight and spatial mode of each other can be increased, and thus the structural strength and torsional rigidity of each other can be improved.

In some embodiments, as shown in FIGS. 24 and 27, an outdoor air inlet 11 and an outdoor air outlet 12 are formed on the outdoor housing 1. The outdoor air supply assembly 3 is installed in the outdoor housing 1. The outdoor air supply assembly 3 may be configured to guide airflow from the outdoor air inlet 11 to the outdoor air outlet 12. The outdoor heat exchanger 4 may be provided between the outdoor air inlet 11 and the outdoor air supply assembly 3, such that the airflow exchanges heat in the outdoor heat exchanger 4 and flows toward the outdoor air supply assembly 3.

It should be noted that in some other embodiments, the first top plate 23 and the second top plate 24 may be both horizontally arranged. This configuration allows them to extend effectively towards the side of the outdoor housing 1, thereby reducing material consumption and improving manufacturing feasibility.

In some embodiments, as shown in FIGS. 27 and 29, a mounting groove 26 may be formed between the second top plate 24, the third top plate 25, and the outdoor housing 1. The mounting slot 26 may be configured to mount the lower edge of the window.

In some embodiments, as shown in FIGS. 27 and 29, the first top plate 23, the second top plate 24, and the third top plate 25 may be sequentially connected in the front-rear direction. The second top plate 24 may change the extension direction of the first top plate 23. The second top plate 24 may extend obliquely downwards. This makes it possible to shorten the outer contour dimensions of the side of the indoor housing 2 close to the window, so that the window can be lowered into the mounting groove 26 at a lower height (i.e. the window is closer to the window sill), thereby improving the effect of the window on insulating outdoor noise.

As shown in FIGS. 23 and 24, a window air conditioner 100 according to some embodiments of the present disclosure is provided. The window air conditioner 100 may include an indoor portion 101 and an outdoor portion 102. The height of the indoor portion 101 may be less than the height of the outdoor portion 102. Since the height of the indoor portion 101 is less than the height of the outdoor portion 102, this allows for a reduction in the height dimension of the indoor portion 101 and decreases the indoor space occupied, thereby improving the utilization rate of indoor space. Moreover, the reduced height of the indoor portion 101 allows the indoor portion to sit closer to the window sill when the window is lowered. This positioning helps to better isolate outdoor noise, enhancing the noise reduction effect.

In some embodiments, as shown in FIGS. 24 and 27, the indoor portion 101 may include an indoor heat exchanger 6. The indoor heat exchanger 6 may include a first heat exchanger 61 and a second heat exchanger 62. The first heat exchanger 61 may be disposed inclined downwards in the front-rear direction. The front end of the second heat exchanger 62 may be connected to the rear end of the first heat exchanger 61, and the second heat exchanger 62 may be inclined upwards in the front-rear direction. The mounting plane 13 may be formed at the bottom of the outdoor portion 102. The angle between the leeward side of the first heat exchanger 61 and the mounting plane 13 is α, and α may satisfy the relation: 43°≤α≤50°. The angle between the leeward side of the second heat exchanger 62 and the mounting plane 13 is β, and β can satisfy the relation: 45°≤β≤50°.

It should be noted that, as in the above arrangement, on the one hand, it is possible to ensure that the condensed water on the first heat exchanger 61 and the second heat exchanger 62 flows smoothly along the surface of the fins into the water collection tray, avoiding problems such as dripping water in the midair and blocking the ventilation of the fins. On the other hand, under a certain height limit, the heat exchange area on the first heat exchanger 61 and the second heat exchanger 62 may also be effectively increased, thereby simultaneously ensuring the heat exchange efficiency and the space arrangement utilization rate on the first heat exchanger 61 and the second heat exchanger 62.

Those skilled in the art will understand that the disclosed scope of the present disclosure is not limited to the specific embodiments described above, and certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited only by the appended claims.