CEILING-CASSETTE INDOOR UNIT AND AIR CONDITIONER

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority to the Chinese patent application No. 202111673819.0, filed on Dec. 31, 2021 and entitled “Ceiling-Cassette Indoor Unit and Air Conditioner,” the entire content of which is incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the technical field of air conditioning equipment, and in particular relates to a ceiling-cassette indoor unit and an air conditioner.

BACKGROUND

In related art, when air conditioners, especially ceiling-cassette indoor units, are in a cooling mode, cooling radiation from air ducts will produce condensation over outer wall surfaces of air duct assemblies, which will cause problems such as damaging electrical components and adversely affecting user experience due to condensed water dripping out of the ceiling-cassette indoor units. The conventional way is to use sponge for insulation on the outer wall surfaces of the air duct assemblies. However, the sponge application process has low production efficiency and high cost, and affects the aesthetics of the overall appearance of the ceiling-cassette indoor unit.

SUMMARY

The present disclosure aims to solve at least one of the technical problems existing in the related art. To this end, the present disclosure provides a ceiling-cassette indoor unit that uses a first flow guide structure and a second flow guide structure to guide condensed water generated on an outer wall of an air duct assembly to a water pan, and the condensed water can be discharged. Instead of sticking sponges for insulation, this can improve production efficiency.

The present disclosure further provides an air conditioner with the above-mentioned ceiling-cassette indoor unit.

The ceiling-cassette indoor unit according to an embodiment in a first aspect of the present disclosure includes: a heat exchanger, including a first heat exchanger and a second heat exchanger, where the first heat exchanger and the second heat exchanger are connected to each other in a length direction of the heat exchanger; a water pan, provided with a first water catcher, a second water catcher and a third water catcher, where the first water catcher extends in the length direction and is located below a connection between the first heat exchanger and the second heat exchanger, the second water catcher and the third water catcher are disposed at two ends of the first water catcher in the length direction, respectively; and an air duct assembly, including a first housing and a second housing, where an air outlet channel is formed by the first housing and the second housing, one end of the first housing is connected to the first heat exchanger at an end away from the second heat exchanger, one end of the second housing is connected to the second heat exchanger at an end away from the first heat exchanger, a first flow guide structure for guiding condensed water to the water pan is disposed on an outer wall of the first housing, and a second flow guide structure for guiding condensed water to the water pan is disposed on an outer wall of the second housing.

The ceiling-cassette indoor unit according to the embodiment of the present disclosure has at least the following beneficial effects.

The heat exchanger, the water pan and the air duct assembly are provided, the water pan is located below the heat exchanger and is used for accommodating the condensed water generated by the heat exchanger. The air duct assembly includes the first housing and the second housing, and the air outlet channel is formed. The first housing and the second housing are located at an inlet of the air outlet channel and are connected to the heat exchanger at two ends, respectively, ensuring the sealing property of the air outlet channel, and reducing the cold air leakage. The first flow guide structure is disposed on the outer wall of the first housing, the second flow guide structure is disposed on the outer wall of the second housing, and the first flow guide structure and the second flow guide structure are used for guiding the condensed water generated by the air duct assembly to the water pan, so that the condensed water generated from cooling radiation can be collected into the water pan and drained out of the ceiling-cassette indoor unit, preventing the condensed water from damaging the electrical components or dripping out of the ceiling-cassette indoor unit. In this way, the failure rate of the ceiling-cassette indoor unit is reduced and the operation safety of the ceiling-cassette indoor unit is improved. Compared with the traditional sponge insulation method, this can improve the production efficiency of the ceiling-cassette indoor unit, reduce the production cost, and ensure the aesthetic appearance of the ceiling-cassette indoor unit.

According to some embodiments of the present disclosure, the first water catcher, the second water catcher and the third water catcher are connected. A drain outlet is formed in the second water catcher at a bottom wall, and a bottom wall of the first water catcher and a bottom wall of the third water catcher are inclined toward the drain outlet.

According to some embodiments of the present disclosure, the water pan is further provided with a fourth water catcher. The fourth water catcher extends in the length direction and is connected to the second water catcher and/or the third water catcher. The first flow guide structure includes a first folded edge, one end of the first folded edge is fixedly connected to the first housing at an end close to an outlet of the air outlet channel, and the other end extends downward to an inner wall of the fourth water catcher.

According to some embodiments of the present disclosure, the fourth water catcher is spaced apart from the first water catcher. The water pan is provided with a third rib, and the third rib connects the fourth water catcher and the first water catcher.

According to some embodiments of the present disclosure, the ceiling-cassette indoor unit further includes an air outlet frame. The air outlet frame is disposed at an outlet of the air outlet channel and is fixedly connected to the first housing. A first seal member is disposed between an outer wall of the fourth water catcher and the first folded edge.

According to some embodiments of the present disclosure, the first air flow guide structure further includes a first drainage rib fixed on the outer wall of the first housing, and the first drainage rib extends in a direction toward the first folded edge.

According to some embodiments of the present disclosure, the air duct assembly further includes a first rib and a third seal member. The first rib is fixedly connected to the outer wall of the first housing and is located above a part of the first exchanger. The first heat exchanger is hermetically connected to the first housing and the first rib through the third seal member.

According to some embodiments of the present disclosure, the second air flow guide structure includes a second folded edge. One end of the second folded edge is fixedly connected to the second housing at an end close to the outlet of the air outlet channel, and the other end extends upward to form a flow guide groove. The flow guide groove is provided with a first water outlet at least one end in the length direction.

According to some embodiments of the present disclosure, the second flow guide structure further includes a plurality of second drainage ribs fixed on the outer wall of the second housing, and the plurality of second drainage ribs are used for guiding the condensed water to the first water outlet.

According to some embodiments of the present disclosure, the second housing includes an arc-shaped plate and an inclined plate. The second drainage rib and the first water outlet are disposed on the arc-shaped plate at an end away from the inclined plate. The inclined plate is arranged inclined downward toward the arc-shaped plate. The inclined plate is provided with a second water outlet and a plurality of third drainage ribs. The second water outlet is disposed on the inclined plate at the end toward the arc-shaped plate. And a plurality of third drainage ribs are used for guiding the condensed water to the second water outlet.

According to some embodiments of the present disclosure, the ceiling-cassette indoor unit further includes an air outlet frame. The air outlet frame is disposed at the outlet of the air outlet channel and is fixedly connected to the second housing. A second seal member is disposed between the air outlet frame and the second folded edge.

According to some embodiments of the present disclosure, the ceiling-cassette indoor unit further includes an air outlet frame. A first air outlet connected to the outlet of the air outlet channel is formed in the air outlet frame. A plurality of second ribs are disposed on an inner wall of the first air outlet, and the plurality of second ribs are spaced apart in the length direction.

According to some embodiments of the present disclosure, the air outlet frame is provided with a fourth seal member. The fourth seal member encircles at least parts of an outer wall of the air outlet frame.

According to some embodiments of the present disclosure, the ceiling-cassette indoor unit further includes a panel assembly. The panel assembly includes a face frame and a heat insulator, and the face frame is provided with a second air outlet corresponding to the outlet of the air outlet channel, and the heat insulator is fixedly connected to the face frame and encircles at least parts of the periphery of the second air outlet.

According to some embodiments of the present disclosure, the panel assembly includes a recessed structure formed on at least parts of the periphery of the second air outlet.

According to some embodiments of the present disclosure, the heat insulator extends toward the center of the second air outlet at an end to form a protrusion. The protrusion is exposed to the second air outlet, and the recessed structure is formed at a connection between the protrusion and the face frame.

According to some embodiments of the present disclosure, in the extension direction of the protrusion, the size of the protrusion is L, and a plate thickness of the face frame is d, which satisfies: d≤L≤1.5d.

According to some embodiments of the present disclosure, the peripheral wall of the second air outlet is provided a rounded chamfer at an end away from the protrusion.

According to some embodiments of the present disclosure, the heat insulator is made of a foam material.

According to an embodiment in a second aspect of the present disclosure, an air conditioner is provided, which includes the ceiling-cassette indoor unit described in the above embodiment.

The air conditioner according to the embodiment of the present disclosure has at least the following beneficial effects.

The ceiling-cassette indoor unit according to the embodiment of the first aspect is used. The ceiling-cassette indoor unit is provided with the heat exchanger, the water pan and the air duct assembly, the water pan is located below the heat exchanger and is used for accommodating the condensed water generated by the heat exchanger. The air duct assembly includes the first housing and the second housing, and the air outlet channel is formed. The first housing and the second housing are located at the inlet of the air outlet channel and are connected to the heat exchanger at two ends, respectively, ensuring the sealing property of the air outlet channel, and reducing the cold air leakage. The first flow guide structure is disposed on the outer wall of the first housing, the second flow guide structure is disposed on the outer wall of the second housing, and the first flow guide structure and the second flow guide structure are used for guiding the condensed water generated by the air duct assembly to the water pan, so that the condensed water generated from cooling radiation can be collected into the water pan and drained out of the ceiling-cassette indoor unit, preventing the condensed water from damaging the electrical components or dripping out of the ceiling-cassette indoor unit. In this way, the failure rate of the ceiling-cassette indoor unit is reduced and the operation safety of the ceiling-cassette indoor unit is improved. Compared with the traditional sponge insulation method, this can improve the production efficiency of the ceiling-cassette indoor unit, reduce the production cost, and ensure the aesthetic appearance of the ceiling-cassette indoor unit.

Additional aspects and advantages of the present disclosure will be set forth in part in the following description, and in part will be obvious from the description, or may be learned by practice of the present disclosure.

BRIEF DESCRIPTION OF DRAWINGS

The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments. In the accompanying drawings:

FIG. 1 is a schematic structural diagram of a ceiling-cassette indoor unit according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural diagram of a water pan in FIG. 2;

FIG. 4 is a schematic bottom view diagram of FIG. 1, where a panel assembly is removed;

FIG. 5 is a perspective structural diagram of a first housing and an air outlet frame in FIG. 2;

FIG. 6 is an enlarged view showing a portion indicated by A in FIG. 2;

FIG. 7 is a partial structural cross-sectional view of a ceiling-cassette indoor unit according to an embodiment of the present disclosure;

FIG. 8 is a partial cross-sectional view of a ceiling-cassette indoor unit according to another embodiment of the present disclosure;

FIG. 9 is a bottom perspective view diagram of a second housing in FIG. 2;

FIG. 10 is a top perspective view diagram of the second housing in FIG. 2;

FIG. 11 is a top plan view of the second housing in FIG. 2;

FIG. 12 is an enlarged view showing a portion indicated by B in FIG. 2;

FIG. 13 is an exploded view of FIG. 1;

FIG. 14 is a bottom view of a panel assembly in FIG. 13;

FIG. 15 is an enlarged view showing a portion indicated by C in FIG. 14;

FIG. 16 is a partially enlarged view of a panel assembly in FIG. 2; and

FIG. 17 is an enlarged view showing a portion indicated by D in FIG. 16.

REFERENCE NUMERALS

• • housing 100; installation structure 110;
  • heat exchanger 200; first heat exchanger 210; second heat exchanger 220;
  • water pan 300; first water catcher 310; insulation layer 311; reinforcement rib 312; second water catcher 320; drainage recess 321; drain outlet 322; third water catcher 330; fourth water catcher 340; air inlet 350; third rib 360; connection plate 370;
  • impeller 400;
  • air duct assembly 500; air outlet channel 510; first housing 520; first folded edge 521; first seal member 522; first drainage rib 523; third seal member 524; first rib 525; second housing 530; fifth seal member 531; second folded edge 532; drainage groove 5321; third folded edge 533; first water outlet 534; second drainage rib 535; first diverter rib 5351; second diverter rib 5352; third diverter rib 5353; fourth diverter rib 5354; fifth diverter rib 5355; arc-shaped plate 536; inclined plate 537; second water outlet 538; third drainage rib 539; sixth diverter rib 5391; seventh diverter rib 5392; eighth diverter rib 5393; ninth diverter rib 5394; tenth diverter rib 5395; second seal member 540;
  • air outlet frame 600; first air outlet 610; second rib 620; fourth seal member 630;
  • panel assembly 700; face frame 710; air inlet 711; second air outlet 712; heat insulator 720; protrusion 721; recessed structure 730; rounded chamber 731; corner member 732.

DETAILED DESCRIPTION

Embodiments of the present disclosure will be described in detail below, examples of which are illustrated in the accompanying drawings. The same or similar reference numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure and cannot be understood as limiting the present disclosure.

In the description of the present disclosure, it should be understood that the orientation descriptions involved, such as the orientation or positional relationship indicated by “up,” “down,” etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present disclosure.

In the description of the present disclosure, “a plurality of” means two or more. Terms such as “first,” “second” and the like are used herein the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

In the description of the present disclosure, unless otherwise explicitly limited, words such as “setting,” “installation,” “connection,” etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present disclosure in combination with the specific content of the technical solution.

Referring to FIGS. 1 to 2, a ceiling-cassette indoor unit according to an embodiment of the present disclosure includes a housing 100, a heat exchanger 200, a water pan 300, an impeller 400, and an air duct assembly 500. An accommodating space is formed inside the housing 100, and the accommodating space is used for installing the heat exchanger 200, the water pan 300, the impeller 400, the air duct assembly 500, and other structures. The housing 100 is provided with an installation structure 110, by which the ceiling-cassette indoor unit can be fixedly installed on a roof, ceiling or suspended ceiling. The heat exchanger 200 is a V-shaped heat exchanger and includes a first heat exchanger 210 and a second heat exchanger 220 that are connected. The first heat exchanger 210 and the second heat exchanger 220 form a certain included angle. The water pan 300 is disposed below the heat exchanger 200 for collecting the condensed water and draining it out from the ceiling-cassette indoor unit.

Referring to FIG. 3, the water pan 300 is provided with a first water catcher 310, a second water catcher 320 and a third water catcher 330. The first water catcher 310 is disposed below a connection between the first heat exchanger 210 and the second heat exchanger 220. The first water catcher 310 extends in the length direction of the heat exchanger 200 (i.e., the left-right direction in FIG. 3) for accommodating the condensed water dripping from the connection between the first heat exchanger 210 and the second heat exchanger 220. The second water catcher 320 is connected to a left side of the first water catcher 310, and the third water catcher 330 is connected to a right side of the first water catcher 310. The second water catcher 320 and the third water catcher 330 are used for accommodating the condensed water dripping from the heat exchanger 210 and the second heat exchanger 220 at both sides in the left and right directions, respectively, for example, the condensed water generated by a refrigerant elbow. The impeller 400 is disposed above the heat exchanger 200, that is, at the end of the heat exchanger 200 away from the water pan 300. The impeller 400 can be a cross-flow impeller. The air duct assembly 500 is disposed at an air outlet end of the impeller 400. An air outlet channel 510 is formed in the air duct assembly 500. The impeller 400 rotates to form a negative pressure, allowing indoor air to enter the accommodating space from the bottom of the water pan 300 and pass through the first heat exchanger 210 and the second heat exchanger 220 for heat exchange, and the heat-exchanged air is blown out to the air outlet channel 510 through the impeller 400, where it is guided and blown out to an indoor environment through the air outlet channel 510.

Referring to FIG. 2, it may be understood that an insulation layer 311 is disposed on the bottom wall of the first water catcher 310 (i.e., the wall surface on the side away from the heat exchanger 200). Since more condensed water is generated at the connection between the first heat exchanger 210 and the second heat exchanger 220, and the temperature of the condensed water is low, when the condensed water accumulates in the first water catcher 310, the temperature of the first water catcher 310 also decreases, and a temperature difference between inside and outside of the first water catcher 310 is formed, water vapor in the air will adhere to the bottom wall of the first water catcher 310. When accumulated to a certain extent, the condensed water will drip. Therefore, the bottom wall of the first water catcher 310 is covered by the insulation layer 311 to prevent the water vapor in the air from adhering due to cooling effect and generating the condensed water on the bottom wall of the first water catcher 310. It should be noted that the insulation layer 311 may be made of insulation cotton, foam and other materials, or may also be made of asbestos or glass fiber.

Referring to FIG. 2, it may be understood that the air duct assembly 500 includes a first housing 520 and a second housing 530, and an air outlet channel 510 is formed by the first housing 520 and the second housing 530. The end, located at an inlet of the air outlet channel 510, of the first housing 520 is hermetically connected to one end of the first heat exchanger 210 away from the second heat exchanger 220, and the end, located at the inlet of the air outlet channel 510, of the second housing 530 is hermetically connected to one end of the second heat exchanger 220 away from the first heat exchanger 210, thereby ensuring the sealing property of the air outlet channel 510, reducing the probability of cold air leaking into the accommodating space, and preventing the cold air from forming condensation on the surface of the electrical components in the accommodating space to affect the operational safety of the electrical components.

Referring to FIG. 2, it may be understood that a first flow guide structure is disposed on an outer wall of the first housing 520. The first flow guide structure may be formed as a flow guiding channel, so that the condensed water on the outer wall of the first housing 520 is guided to the flow guiding channel and guided to the water pan 300 through the flow guiding channel. The first flow guide structure may also be arranged as a structure that matches the structure of the water pan 300, so as to directly guide the condensed water on the outer wall of the first housing 520 to the water pan 300. A second flow guide structure is disposed on an outer wall of the second housing 530. The second flow guide structure may be formed as a flow guiding channel, so that the condensed water on the outer wall of the second housing 530 is guided to the flow guiding channel and guided to the water pan 300 through the flow guiding channel. The second flow guide structure may also be arranged as a structure that matches the structure of the water pan 300, so as to directly guide the condensed water on the outer wall of the second housing 530 to the water pan 300.

Therefore, the first flow guide structure and the second flow guide structure are used for guiding the condensed water generated on the outer wall of the air duct assembly 500 to the water pan 300, so that the condensed water generated by cooling radiation may be collected into the water pan 300 and is drained out of the ceiling-cassette indoor unit to prevent the condensed water from damaging the electrical components or dripping out of the ceiling-cassette indoor unit, thereby reducing the failure rate of the ceiling-cassette indoor unit, improving the operation safety of the ceiling-cassette indoor unit, and replacing the traditional sponge insulation method to avoid mildew as the sponge is often in a humid state due to generation of the condensed water, so that the production efficiency of the ceiling-cassette indoor unit is improved, the production cost is lowered, and the aesthetic appearance of the ceiling-cassette indoor unit is ensured.

Referring to FIG. 2 and FIG. 4, it may be understood that the ceiling-cassette indoor unit according to the embodiment of the present disclosure further includes an air outlet frame 600. The air outlet frame 600 is installed at the outlet of the air outlet channel 510. The air outlet frame 600 is hermetically connected to the first housing 520 at the outlet end of the air outlet channel 510, and is also hermetically connected to the second housing 530 at the outlet end of the air outlet channel 510, thereby effectively preventing cold air from leaking out of the air outlet frame 600. The air outlet frame 600 may be integrally formed with the first housing 520 or the second housing 530, or may be stably connected through a connection structure, which is no longer specifically limited here. As another embodiment, the air outlet frame 600 is replaced by extending and lengthening the air duct assembly 500 downward for instead of providing the air outlet frame 600.

Referring to FIGS. 4 to 5, it may be understood that a first air outlet 610 is formed in the air outlet frame 600. The first air outlet 610 is connected to the outlet of the air outlet channel 510. A plurality of second ribs 620 are formed in an inner wall of the first air outlet 610. The plurality of second ribs 620 are spaced apart in the length direction to reduce the air outlet resistance and meanwhile reduce the manufacturing difficulty. The plurality of second ribs 620 form a protective structure, which can prevent human hands from reaching into the air duct assembly 500 through the first air outlet 610 and prevent accidents caused by human hands accidentally touching the impeller 400. It may be understood that the space among the plurality of second ribs 620 may be adjusted according to actual needs, which is no longer specifically limited here.

Referring to FIG. 3, in the ceiling-cassette indoor unit according to the embodiment of the present disclosure, the first water catcher 310, the second water catcher 320 and the third water catcher 330 of the water pan 300 are connected, a drainage recess 321 is disposed at the second water catcher 320. And the bottom wall of the second water catcher 320 is recessed inward to form the drainage recess 321. The bottom wall of the first water catcher 310 and the bottom wall of the third water catcher 330 are inclined toward the second water catcher 320, so that the drainage recess 321 is located at the lowest of the first water catcher 310, the second water catcher 320 and the third water catcher 330. The bottom walls of the first water catcher 310, the second water catcher 320 and the third water catcher 330 can all be inclined toward the drainage recess 321, so that the condensed water can be quickly gathered into the drainage recess 321. A drain outlet 322 is disposed in the drainage recess 321, and the drain outlet 322 is used for discharging the condensed water collected by the water pan 300 to the outside of the ceiling-cassette indoor unit. The drain outlet 322 may cooperate with a water pump (not shown in the figure) to drain the condensed water through the water pump. The water may also drip out of the drain outlet 322 by gravity, which is no longer specifically limited here.

Referring to FIG. 2, FIG. 6, and FIG. 7, it may be understood that the water pan 300 is also provided with a fourth water catcher 340. The fourth water catcher 340 is arranged parallel to the first water catcher 310 and extends in the left and right directions. Two ends of the fourth water catcher 340 are each connected to the second water catcher 320 and the third water catcher 330, respectively, thereby achieving a better flow guiding effect. In an embodiment, the fourth water catcher 340 may also be connected to only one of the second water catcher 320 and the third water catcher 330, or may be connected to the first water catcher 310, or a combination thereof. The first housing 520 is provided with a first folded edge 521. One end of the first folded edge 521 is fixedly connected to the first housing 520 at an end close to the outlet of the air outlet channel 510. The other end of the first folded edge 521 extends in a direction away from the first housing 520 and is bent downward to the inner wall of the fourth water catcher 340. The first folded edge 521 can be clamped with the inner wall of the fourth water catcher 340, thereby achieving a stable connection. It may be understood that the first folded edge 521 extends in the left and right directions. When the condensed water is generated on the outer wall of the first housing 520 under the action of cold wind and flows downward, the first folded edge 521 may directly guide the condensed water to the fourth water catcher 340, the fourth water catcher 340 further guides the condensed water to the drain outlet 322 for discharging, thereby ensuring that the condensed water generated on the outer wall of the first housing 520 may be quickly guided and drained without causing damage to the electrical components or adverse effect that the condensed water drops out of the ceiling-cassette indoor unit. The first folded edge 521 and the first housing 520 can be integrally formed, thereby improving the structural strength.

Referring to FIGS. 3 to 4, it may be understood that the fourth water catcher 340 is spaced apart from the first water catcher 310. And an air inlet hole 350 is formed between the fourth water catcher 340 and the first water catcher 310. Another air inlet hole 350 is formed between the first water catcher 310 and the housing 100. Indoor air enters the accommodating space where the heat exchanger 200 is located through the air inlet hole 350. In order to improve the structural stability of the fourth water catcher 340, the water pan 300 is provided with a plurality of third ribs 360, for example, three third ribs 360 are disposed, and the three third ribs 360 are spaced apart in the left-right direction. Both ends of each of the three ribs 360 are connected to the first water catcher 310 and the fourth water catcher 340, respectively, which improves the stability of the connection between the fourth water catcher 340 and the first water catcher 310, thereby improving the structural strength of the water pan 300. In another embodiment, the third ribs 360 may also be provided with a flow guiding channel connecting the first water catcher 310 and the fourth water catcher 340, thereby improving the flow guiding effect of the fourth water catcher 340.

Referring to FIG. 3, it may be understood that since the first water catcher 310 is relatively long and the structural strength is relatively low, a connection plate 370 is disposed at one end of the first water catcher 310 away from the fourth water catcher 340, and the other end of the connection plate 370 is connected to the housing 100, which improves the structural strength and load-bearing capacity of the first water catcher 310, thereby improving the overall structural strength of the water pan 300.

It may be understood that a reinforcement rib 312is further disposed on the bottom wall of the first water catcher 310, and the reinforcement rib 312 extends in the length direction of the first water catcher 310 (i.e., the left-right direction in FIG. 3), thereby further improving the structural strength and load-bearing capacity of the first water catcher 310.

Referring to FIG. 5, it may be understood that the air outlet frame 600 and the first housing 520 are integrally formed. A first seal member 522 is disposed between the first folded edge 521 and the outer wall of the fourth water catcher 340. The first seal member 522 may be made of insulation cotton, foam or other materials, which can avoid cold air leakage from the air outlet channel 510 and also prevent the condensed water in the fourth water catcher 340 from overflowing. It may also prevent the generation of condensed water on the outer wall of the air outlet frame 600 at a side toward the fourth water catcher 340. It may be understood that the first seal member 522 may also extend downward and be sandwiched between the outer wall of the air outlet frame 600 and the outer wall of the fourth water catcher 340, so as to more effectively insulate the air outlet frame 600, thereby reducing the probability of generating the condensed water on the outer wall of the air outlet frame 600.

Referring to FIGS. 5 to 6, it may be understood that the first housing 520 is also provided with a first drainage rib 523. The first drainage rib 523 is formed on the outer wall of the first housing 520. The cross-sectional shape of the first drainage rib 523 may be square, triangular or trapezoidal, and the like. The first drainage rib 523 extends in the up and down directions to guide the condensed water in a direction toward the first folded edge 521. A plurality of first drainage ribs 523 may be disposed. The plurality of first drainage ribs 523 are spaced apart in the left-right direction. The bottoms of the plurality of first drainage ribs 523 extend to the first folded edge 521, so that the condensed water on the outer wall of the first housing 520 may be quickly guided to the first folded edge 521 and flow into the fourth water catcher 340, which improves the drainage efficiency of the first housing 520, and the first drainage rib 523 and the first folded edge 521 are fixedly connected and form a first flow guide structure, which further improves the structural strength of the first folded edge 521.

Referring to FIG. 8, it may be understood that the first heat exchanger 210 abuts against the outer wall of the first housing 520 through a third seal member 524, so that the first heat exchanger 210 and the first housing 520 are connected more hermetically, which further reduces cold air leakage. The third seal member 524 may be made of insulation cotton, foam, or other materials, which are not specifically limited here. In order to improve the sealing effect of the third seal member 524, the first housing 520 is also provided with a first rib 525. The first rib 525 is disposed above the first heat exchanger 210. The first rib 525 can improve the structural strength of the first housing 520, the third seal member 524 can be adhered and fixed to the first rib 525 and the outer wall of the first housing 520 to achieve a more stable connection, thereby allowing the first heat exchanger 210 to be hermetically connected to the first housing 520 and the first rib 525 through the third seal member 524.

Referring to FIG. 8, it may be understood that the second heat exchanger 220 abuts against the second housing 530 through a fifth seal member 531, so that the second heat exchanger 220 and the second housing 530 are connected more hermetically, which further reduces cold air leakage. The fifth seal member 531 may be made of insulation cotton, foam or other materials, which is not specifically limited here.

Referring to FIGS. 9, 10, and 12, it may be understood that the second housing 530 is provided with a second folded edge 532, and one end of the second folded edge 532 is fixedly connected to the outer wall of the second housing 530 and is located at the end close to the outlet of the air outlet channel 510. The other end of the second folded edge 532 extends upward to form a flow guide groove 5321. When the condensed water is generated on the outer wall of the second housing 530 under the action of cold air and the condensed water flows downward, the flow guide groove 5321 may collect the condensed water. The flow guide groove 5321 extends in the length direction (i.e., the left-right direction in FIG. 10). First water outlets 534 are disposed at both ends of the flow guide groove 5321. The first water outlets 534 drain the condensed water in the flow guide groove 5321 to the second water catcher 320 or the third water catcher 330. In another embodiment, the first water outlet 534 may also be disposed at one end of the flow guide groove 5321, and the bottom wall of the flow guide groove 5321 is disposed obliquely downward along the first water outlet 534, so that the condensed water may be drained to the water pan 300 through the first water outlet 534.

Referring to FIG. 10, it may be understood that the second housing 530 is also provided with a second drainage rib 535, and the second drainage rib 535 and the second folded edge 532 form a second drainage structure for guiding the condensed water generated on the outer wall of the second housing 530 to the water pan 300. The second drainage rib 535 is fixedly connected to the outer wall of the second housing 530. There are a plurality of second drainage ribs 535. Some of the second drainage ribs 535 extend in the left-right direction, some of the second drainage ribs 535 extend in the front-rear direction, and some of the second drainage ribs 535 extend in both the left-right direction and the front-rear direction. The second drainage rib 535 may directly guide the condensed water to the first water outlet 534 for discharging, or may guide the condensed water to the flow guide groove 5321, and then guide the condensed water to the first water outlet 534 for discharging through the flow guide groove 5321. It may be understood that the second drainage rib 535 is a structure protruding from the outer wall of the second housing 530. The second drainage rib 535 and the second housing 530 may be integrally formed, which can increase the structural strength of the second housing 530.The cross-sectional shape of the second drainage rib 535 may be square, triangular, trapezoidal, and the like.

Referring to FIGS. 7 and 10, it may be understood that the second housing 530 includes an arc-shaped plate 536 and an inclined plate 537. And an arc-shaped air outlet channel 510 is formed between the arc-shaped plate 536 and the first housing 520. The inclined plate 537 and the arc-shaped plate 536 are integrally formed and extend in a direction toward the second heat exchanger 220. The end of the second heat exchanger 220 away from the first heat exchanger 210 is hermetically connected through the fifth seal member 531. The second drainage rib 535 and the first water outlet 534 are disposed on the arc-shaped plate 536 at an end away from the inclined plate 537 for guiding the condensed water generated on the outer wall of the arc-shaped plate 536. The inclined plate 537 is inclined downward toward the arc-shaped plate 536. The inclined plate 537 is provided with second water outlets 538 and a plurality of third drainage ribs 539. The second water outlets 538 are disposed at the end of the inclined plate 537 toward the arc-shaped plate 536 and can guide the condensed water generated on the outer wall of the inclined plate 537. The condensed water is guided in the inclined direction of the inclined plate 537 to the second water outlet 538. The second water outlets 538 drain the condensed water to the water pan 300, thereby improving the drainage efficiency of the second housing 530. It may be understood that the second water outlets 538 are disposed at both ends of the connection between the inclined plate 537 and the arc-shaped plate 536 in the left and right directions. The condensed water may be directly guided to the second water outlets 538 through the third drainage ribs 539, or may be guided to the connection between the inclined plate 537 and the arc-shaped plate 536 through the third drainage ribs 539, and then flows to the second water outlets 538. The plurality of third drainage ribs 539 are structures protruding from the outer wall of the inclined plate 537. The third drainage ribs 539 may be integrally formed with the inclined plate 537, which can increase the structural strength of the inclined plate 537. The cross-sectional shape of the third drainage ribs 539 may be square, triangular or trapezoidal, and the like.

It may be understood that two, three or more inclined plates 537 may be disposed according to actual product requirements. When there are multiple inclined plates 537, the slopes of the two adjacent inclined plates 537 are different. Each of the inclined plates 537 may be provided with the flow guide structures such as the second water outlets 538 and the third drainage ribs 539 as needed to guide the condensed water to the water pan 300.

Referring to FIGS. 10 and 11, it may be understood that the second drainage rib 535 includes a first diverter rib 5351 and a second diverter rib 5352. The first diverter rib 5351 extends toward the left side of the arc-shaped plate 536, and the second diverter rib 5352 extends toward the right side of the arc-shaped plate 536. The first water outlets 534 are respectively disposed on the left and right sides of the arc-shaped plate 536. The first diverter rib 5351 and the second diverter rib 5352 are both arranged obliquely, so that the condensed water flowing along the first diverter rib 5351 and the second diverter rib 5352 can be guided to the corresponding first water outlets 534 respectively, thereby accelerating flowing of the condensed water, so that the condensed water can flow out through the first water outlets 534 faster.

It may be understood that the second drainage rib 535 also includes a third diverter rib 5353 and a fourth diverter rib 5354. The third diverter rib 5353 and the fourth diverter rib 5354 are located at the downstream position of the first diverter rib 5351 and the second diverter rib 5352 (that is, at the front end of the flowing condensed water in the front-rear direction). The function of the third diverter rib 5353 is to guide the condensed water on the outer wall of the arc-shaped plate 536 to the left side of the arc-shaped plate 536, the function of the fourth diverter rib 5354 is to guide the condensed water on the outer wall of the arc-shaped plate 536 to the right side of the arc-shaped plate 536, so that the condensed water is diverted at intervals in the left-right direction in FIG. 11, and the condensed water is diverted in the front-rear direction and then gathered to the flow guide groove 5321, and is drained to the first water outlet 534 to flow out to improve the flow guiding efficiency of the condensed water along the arc-shaped plate 536. The third diverter rib 5353 and the fourth diverter rib 5354 may be symmetrical in structure.

It may be understood that the second drainage rib 535 also includes a fifth diverter rib 5355. The fifth diverter rib 5355 is connected to the third diverter rib 5353 or the fourth diverter rib 5354, and extends in the flow direction of the condensed water, which can play a role of improving flowing of the condensed water along the outer wall of the arc-shaped plate 536.

It may be understood that a plurality of the diverting structures may be provided, for example two diverting structures are formed with the third diverter rib 5353, the fourth diverter rib 5354 and the fifth diverter rib 5355 and spaced apart in the left-right direction, so that the outer wall of the arc-shaped plate 536 has a more excellent flow guiding effect to the condensed water.

Referring to FIG. 11, it may be understood that the third drainage rib 539 includes a sixth diverter rib 5391 and a seventh diverter rib 5392. The sixth diverter rib 5391 extends toward the left side of the inclined plate 537, and the seventh diverter rib 5392 extends toward the inclined plate 537. The second water outlets 538 are respectively disposed in the left and right sides of the inclined plate 537. The sixth diverter rib 5391 and the seventh diverter rib 5392 are both arranged obliquely, so that the condensed water flowing along the sixth diverter rib 5391 and the seventh diverter rib 5392 may be guided to the corresponding second water outlets 538 respectively, thereby accelerating flowing of the condensed water, so that the condensed water can flow out through the second water outlets 538 faster.

It may be understood that the second drainage rib 535 also includes an eighth diverter rib 5393 and a ninth diverter rib 5394. The eighth diverter rib 5393 and the ninth diverter rib 5394 are located upstream of the sixth diverter rib 5391 and the seventh diverter rib 5392 (that is, the rear end of the flowing condensed water in the front-rear direction). The function of the eighth diverter rib 5393 is to guide the condensed water on the outer wall of the inclined plate 537 to the left side of the inclined plate 537, the function of the eighth diverter rib 5393 is to guide the condensed water on the outer wall of the inclined plate 537 to the right side of the inclined plate 537, so that the condensed water is diverted at intervals in the left-right direction in FIG. 11, and the condensed water is diverted in the front-rear direction and then gathered to the sixth diverter rib 5391 and the seventh diverter rib 5392, and guided to the second water outlets 538 to flow out, so as to improve the flow guiding efficiency of the condensed water along the inclined plate 537. The eighth diverter rib 5393 and the ninth diverter rib 5394 may be symmetrical in structure.

It may be understood that the second drainage rib 535 also includes a tenth flow rib 5395. The tenth flow rib 5395 is connected to the eighth diverter rib 5393 or the ninth diverter rib 5394, and extends in the flowing direction of the condensed water, to play a role of improving flowing of the condensed water along the outer wall of the inclined plate 537.

It may be understood that a plurality of, for example, three diverting structures are formed with the eighth diverter rib 5393, the ninth diverter rib 5394, and the tenth diverter rib 5395 and spaced apart in the left-right direction, so that the outer wall of the inclined plate 537 has a more excellent flow guiding effect to the condensed water.

Referring to FIG. 12, it may be understood that the air outlet frame 600 is fixedly connected to the second housing 530, for example, through clamping or integral forming. The air duct assembly 500 also includes a second seal member 540. The second seal member 540 is disposed between the air outlet frame 600 and the second folded edge 532. The second seal member 540 may be made of insulation cotton, foam or other materials, which can prevent the cold air from the air outlet channel 510 from leaking at the connection between the air outlet frame 600 and the second housing 530 and also can prevent generation of the condensed water at the bottom wall of the flow guide groove 5321; moreover, the air outlet frame 600 can be more effectively insulated, so that the probability of generating the condensed water on the outer wall of the air outlet frame 600 is reduced. It may be understood that in order to improve the installation reliability of the second seal member 540, the second folded edge 532 is also connected to a third folded edge 533. The third folded edge 533 extends downward in a direction away from the flow guide groove 5321. The second seal member 540 is clamped between the air outlet frame 600 and the third folded edge 533, making the installation of the second seal member 540 more stable.

Referring to FIG. 5, it may be understood that the air outlet frame 600 is provided with a fourth seal member 630. The fourth seal member 630 may be made of insulation cotton, foam, or other materials. The fourth seal member 630 encircles the air outlet frame 600 to insulate the outer wall of the air outlet frame 600 to prevent the condensed water from being generated on the outer wall of the air outlet frame 600 when the cold air passes through the first air outlet 610, and can also seal the connection between the air outlet frame 600 and the air duct assembly 500 to prevent leakage of the cold air. It may be understood that if the first seal member 522 and the second seal member 540 are disposed on parts of the outer wall of the air outlet frame 600, the fourth seal member 630 only needs to be attached to both sides of the air outlet frame 600 in the left-right direction.

Referring to FIG. 13, it may be understood that the ceiling-cassette indoor unit also includes a panel assembly 700, which is located below the housing 100 and is hermetically connected to the housing 100. The panel assembly 700 includes a face frame 710. The face frame 710 is provided with an air inlet 711. The air inlet 711 allows indoor air to enter the ceiling-cassette indoor unit. The position of the air inlet 711 is set corresponding to the air inlet hole 350. The face frame 710 is also provided with a second air outlet 712. The second air outlet 712 is formed corresponding to the outlet of the air outlet channel 510 and is arranged corresponding to the first air outlet 610. The panel assembly 700 also includes a heat insulator 720. The heat insulator 720 may be foam-molded on the face frame 710. The heat insulator 720 may also be a prefabricated part made of sponge or a foam material and is fixedly connected to the face frame 710, and the heat insulator 720 encircles at least parts of the periphery of the second air outlet 712. For example, when the second air outlet 712 is rectangular, the insulation part 720 may encircle the rear, left, right and front sides of the second air outlet 712 in the air outlet direction, or may encircle one or more sides of the second air outlet 712. The heat insulator 720 may insulate the face frame 710 located around the second air outlet 712, effectively preventing the cold air blown out from the second air outlet 712 from reducing the temperature of the face frame 710 below the dew point temperature, thereby preventing the face frame 710 at the periphery of the second air outlet 712 from generating condensation, and also preventing the electric components in the face frame 710 from being damaged by condensation as the cold air enters the face frame 710.

It may be understood that the heat insulator 720 is also provided with a first fixing part (not shown in the figure), and the face frame 710 is provided with a second fixing part (not shown in the figure). The heat insulator 720 and the face frame 710 are clamped together through the first fixing part and the second fixing part. Specifically, the first fixing part is engaged with the second fixing part to fix the heat insulator 720 on the face frame 710. Compared with mechanical connection methods such as threaded connections, snap-in fixation does not require opening holes in the heat insulator 720, so that the heat insulator 720 has better sealing performance and prevents low-temperature air from flowing into the face frame 710 from the gaps in the heat insulator 720, thereby further improving the heat insulation effect of the heat insulator 720.

It may be understood that, in another embodiment, the heat insulator 720 is bonded and fixed to the face frame 710 through an adhesive. On the one hand, the heat insulator 720 is prevented from falling off during use; and on the other hand, the adhesive may seal the gap between the heat insulator 720 and the face frame 710 to prevent the cold air from flowing to the surface of the face frame 710 through the gap and causing the temperature decrease of the surface of the face frame 710.

It may be understood that the heat insulator 720 includes a first heat insulator (not shown in the figure) and a second heat insulator (not shown in the figure). The first heat insulator and the second heat insulator are spliced together to form the heat insulator 720, and the first heat insulator and the second heat insulator are fixedly connected by fasteners such as bolts. The first heat insulator and the second heat insulator are spliced together as the heat insulator 720 and fixed at the second air outlet 712, making assembly more convenient. The heat insulator 720 is composed of two heat insulators. Since the thermal conductivity of the heat insulator 720 formed by the combination of the two heat insulators is worse than that of the integrally formed heat insulator 720, that is, the loss of heat energy transferred between different parts is greater than the loss transmitted within one piece, so the heat insulator 720 formed by splicing the first heat insulator and the second heat insulator has a better heat insulation effect, further improving the anti-condensation effect of the heat insulator 720.

Referring to FIGS. 14 and 15, it may be understood that the panel assembly 700 includes a recessed structure 730. The recessed structure 730 may be a stepped structure, and the recessed structure 730 is formed on at least parts of the periphery of the second air outlet 712. Therefore, when the cold air blows out from the second air outlet 712, a low-pressure area is formed at the recessed structure 730, causing the high-temperature air in the environment to flow to the recessed structure 730, thereby increasing the temperature near the recessed structure 730. Combined with the heat insulation effect of the heat insulator 720, the face frame 710 around the second air outlet 712 is at a temperature above the dew point, thereby preventing generation of condensation on the face frame 710 around the second air outlet 712.

It may be understood that when the second air outlet 712 is rectangular, the recessed structure 730 may be formed at the rear edge, left edge and right edge of the second air outlet 712 in the air outlet direction. The front edge of the second air outlet 712, adapted to the appearance of the ceiling-cassette indoor unit, is designed to be arc-shaped, so that less condensation is generated. The recessed structure 730 will affect the aesthetics of the appearance, so the recessed structure 730 may not be omitted.

Referring to FIGS. 15 and 16, it may be understood that the heat insulator 720 is provided with a protrusion 721 at an end, and the protrusion 721 is a part of the heat insulator 720 and is formed integrally. The protrusion 721 is formed by extending the end of the heat insulator 720 toward the center of the second air outlet 712. The protrusion 721 is exposed at the second air outlet 712. A recessed structure 730 is formed at the connection between the protrusion 721 and the face frame 710, thereby making the processing of the recessed structure 730 easier. It may be understood that the protrusions 721 may be respectively formed at the rear edge, left edge and right edge of the second air outlet 712 in the air outlet direction. When the second air outlet 712 blows out cold air, a low-pressure area is formed at the connection between the protrusion 721 and the face frame 710, and the high-temperature air in the environment flows to the protrusion 721, increasing the surface temperature of the heat insulator 720 and the face frame 710 so as to prevent generation of condensation.

It may be understood that the recessed structure 730 can also be formed by the heat insulator 720 alone, that is, the recessed structure 730 is formed at the lower end of the protrusion 721; in addition, the recessed structure 730 can also be formed by the face frame 710 attached to the second air outlet 712 alone. For example, the outside of the face frame 710 is recessed inward, or the face frame 710 is made thinner. The design of the above-mentioned recessed structure 730 can also form the low-pressure area, allowing the high-temperature air in the environment to flow to the protrusion 721, increasing the surface temperature of the heat insulator 720 and the face frame 710 to prevent generation of condensation.

Referring to FIG. 17, it may be understood that a rounded chamfer 731 is disposed on the peripheral wall of the second air outlet 712 at an end away from the protrusion 721. The arrangement of the rounded chamfer 731 is conducive to the high-temperature air in the environment flowing back to the recessed structure 730, thereby further improving the anti-condensation effect of the recessed structure 730.

Referring to FIG. 17, it may be understood that a corner member 732 is disposed in the recessed structure 730 at an end close to the second air outlet 712. The corner member 732 is a right-angled step structure or an acute-angled step structure. The corner member 732 is conducive to preventing the cold air from being blown into the recessed structure 730 to reduce the temperature of the recessed structure 730.

Referring to FIG. 17, it may be understood that the structural dimension of the recessed structure 730 is related to the plate thickness of the face frame 710. The dimension of the protrusion 721 in its extension direction is defined as L, the plate thickness of the face frame 710 is defined as d, and the dimension L of the protrusion 721 in its extension direction is designed as 1-1.5 times of the plate thickness d of the face frame 710, which makes the effect of the recessed structure 730 forming the low pressure more excellent, and will not greatly affect the dimension of the second air outlet 712. If the dimension L of the protrusion 721 in its extension direction is too small, the low-pressure area cannot be formed at the connection between the protrusion 721 and the face frame 710, or the low-pressure area formed will be less effective. If the dimension L of the protrusion 721 in its extension direction is too large, the dimension of the second air outlet 712 will be reduced, resulting in a loss of air volume, and it will easily interfere with the air guiding component (not shown in the figure). For example, in order to make the production of the panel assembly 700 more cost-effective, the plate thickness d of the face frame 710 may be set to 2 mm, and the dimension L of the protrusion 721 in its extension direction is 2-3 mm.

According to an embodiment of the present disclosure, an air conditioner including an air conditioner outdoor unit (not shown in the figure) and the ceiling-cassette indoor unit of the above embodiment is provided. The ceiling-cassette indoor unit in the embodiment of the present disclosure is a type of embedded air conditioner indoor unit. The ceiling-cassette indoor unit is connected to the air conditioner outdoor unit through a refrigerant pipe, thereby forming a refrigeration system capable of realizing refrigerant circulation.

Referring to FIGS. 1 to 17, the air conditioner according to the embodiment of the present disclosure includes the ceiling-cassette indoor unit according to the embodiment of the first aspect. The ceiling-cassette indoor unit is provided with the heat exchanger 200, the water pan 300 and the air duct assembly 500. The water pan 300 is located below the heat exchanger 200 and is used for accommodating the condensed water generated by the heat exchanger 200. The air duct assembly 500 includes a first housing 520 and a second housing 530, and an air outlet channel 510 is formed. The first housing 520 and the second housing 530 are located at the inlet of the air outlet channel 510 are connected to the heat exchanger 200 at two ends, respectively, ensuring the sealing property of the air outlet channel 510, and reducing cold air leakage. The first flow guide structure is disposed on the outer wall of the first housing 520, and a second flow guide structure is disposed on the outer wall of the second housing 530. The first and second flow guide structures are used for guiding the condensed water generated by the air duct assembly 500 to the water pan 300, so that the condensed water generated from cooling radiation can be collected into the water pan 300 and drained out of the ceiling-cassette indoor unit, thereby reducing the accumulation of the condensed water and preventing the condensed water from damaging electrical components or dripping out of the ceiling-cassette indoor unit. In this way, the failure rate of the ceiling-cassette indoor unit is reduced and the operation safety of the ceiling-cassette indoor unit is improved. Compared with the traditional sponge insulation method, this can improve the production efficiency of the ceiling-cassette indoor unit, reduce the production cost, and ensure the aesthetic appearance of the ceiling-cassette indoor unit. Moreover, the use of sponge and other insulation materials is reduced, which can save internal space and make the structure of the ceiling-cassette indoor unit more compact.

Since the air conditioner adopts all the technical schemes of the ceiling-cassette indoor unit of the above embodiments, it has at least all the beneficial effects brought by the technical schemes of the above embodiments, which will not be described again here.

The embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can be made without departing from the purpose of the present disclosure.