BLOWER WITH WATERPROOF FUNCTION

Description

CROSS-REFERENCE TO RELATED DISCLOSURES

This disclosure claims the benefit of Chinese Utility Model No. CN202422271286.9, filed Sep. 14, 2024, the entire contents of which are hereby incorporated by reference in their entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of blowers, and more specifically, to a blower with a waterproof function.

BACKGROUND

When a blower is used outdoors, particularly in rainy or harsh environments, the waterproof performance of the blower directly affects the operation of the blower. Existing blowers struggle to balance between waterproof performance and heat dissipation, which often results in traditional blowers sacrificing either waterproof performance or heat dissipation capabilities. During the testing of these traditional blowers, a spray test is often conducted to simulate outdoor rain conditions. In this simulation, if rainwater directly enters a motor of the blower, the rainwater may cause short circuits in the wiring of the motor, leading to accidents such as electrical leakage or motor burnout, which in turn reduces the service life of the blower.

SUMMARY

The present disclosure is related to a blower with a waterproof function, which can improve the waterproof performance of the motor during rainy weather, making it difficult for the rainwater to enter the interior of the motor, thus preventing accidents such as electrical leakage or motor burnout caused by water ingress into the motor.

In the embodiments described herein, a blower with a waterproof function, comprises a volute casing, an impeller disposed within the volute casing, and a motor driving the rotation of the impeller; wherein the volute casing comprises a first housing and a second housing, the first and second housings cooperating to form a cavity within the volute casing; and a sidewall of the second housing is provided with a ventilation area disposed corresponding to the motor, an output shaft of the motor passing through the ventilation area and being connected to the impeller, and a water-blocking convex rib being provided on the periphery of the ventilation area.

In the present disclosure, the second housing is provided with the ventilation area, which allows air to flow from the ventilation area into a mounting cavity to facilitate heat dissipation for the motor inside the mounting cavity. To prevent rainwater from entering the motor, the water-blocking convex rib is disposed on the periphery of the ventilation area, which serves to block the rainwater entering the ventilation area and prevents the rainwater from entering the motor from the ventilation area, thereby improving the waterproof performance of the motor, and ensuring that the blower can operate outdoors normally when it rains. As a result, accidents such as electrical leakage or motor burnout caused by water ingress into the motor are prevented.

In some embodiments, the blower further comprises a motor rear housing, and an outer sidewall of the second housing is provided with a first rear housing, the first rear housing cooperating with the motor rear housing to form a mounting cavity; the motor is disposed within the mounting cavity; and a drainage hole in communication with the outside is provided at the bottom of the mounting cavity.

The drainage hole is also provided at the bottom of the mounting cavity, so that the rainwater that enters the mounting cavity can be drained out through the drainage hole, thereby preventing water accumulation inside the mounting cavity.

In some embodiments, a rear vent is provided at the end of the motor rear housing away from the first housing, and a water-blocking cover is provided at the rear vent.

The rear vent can enhance the heat dissipation performance of the motor, and the water-blocking cover can shelter from the rainwater, thereby preventing the rainwater from entering the mounting cavity through the rear vent.

In some embodiments, a first water-blocking grille is provided at the rear vent.

The arrangement of the water-blocking grille can not only block the rainwater from directly entering the mounting cavity through the rear vent, but also allow the air to flow smoothly into the mounting cavity through the first water-blocking grille. This ensures both the heat dissipation performance and waterproof performance of the motor.

In some embodiments, the ventilation area comprises a main air intake area provided at a central position and an auxiliary air intake area provided on the periphery of the main air intake area; and a plurality of main air inlets are provided in the main air intake area in a circumferential direction, and a second water-blocking grille is provided at each main air inlet.

The air can enter the mounting cavity through the main air inlets to dissipate heat from the motor. The second water-blocking grille can prevent the rainwater from entering the interior of the motor, avoiding damage to components inside the motor.

In some embodiments, each of two second water-blocking grilles comprises a positive L-shaped pillar and an inverted L-shaped pillar which are staggered from each other.

The air flows into the interior of the motor through a passage between the positive L-shaped pillar and the inverted L-shaped pillar. This can prevent the rainwater from entering the interior of the motor and avoid damage to the components inside the motor.

In some embodiments, the main air intake area is provided with a boss protruding into the cavity, the boss forms a recess on an outer side of the second housing, and an end portion of the motor close to the output shaft abuts against the recess.

The cooperation of the recess and the motor allows the motor to be easily and securely fixed within the recess.

In some embodiments, the motor comprises a motor front cover and a motor rear cover, the motor front cover being provided with front cover side holes in a circumferential direction, and an end portion of the motor front cover being provided with a plurality of front cover end holes corresponding to the main air inlets; and a second rear housing is disposed in an outer circumferential direction of the recess, the diameter of the second rear housing being greater than the diameter of the recess, an inner sidewall of the second rear housing being provided with rear housing ridges along an axial direction thereof, the end portion of the motor front cover abutting against the recess, and an outer sidewall of the motor front cover abutting against the rear housing ridges.

The rear housing ridges serve to fix and abut against the sidewall of the motor front cover, creating a gap between the outer sidewall of the motor front cover and an inner side of the second rear housing, so that heat from the motor can dissipate into the mounting cavity through the gap, further enhancing the heat dissipation performance of the motor.

In some embodiments, a plurality of auxiliary air inlets are provided in the auxiliary air intake area, the second rear housing and the first rear housing cooperating to form an auxiliary ventilation passage, and the auxiliary air inlets being in communication with the auxiliary ventilation passage; and a third water-blocking grille is provided at each auxiliary air inlet.

The air flows through the auxiliary air inlets and the auxiliary ventilation passage before entering the mounting cavity, which helps cool and dissipate heat from the motor in the mounting cavity. The third water-blocking grille is provided at each auxiliary air inlet, which can shelter from the rainwater at the auxiliary air inlet, further enhancing the waterproof performance.

In other embodiments of the present disclosure, a blower includes a volute casing having a first housing and a second housing, the first housing and the second housing cooperating to define a volute cavity, an impeller disposed within the volute cavity, a motor configured to drive rotation of the impeller, the motor including an output shaft, and a ventilation area formed on a sidewall of the second housing. The ventilation area includes a main air intake area provided at a central position of the ventilation area and a plurality of main air inlets. The blower further includes a water-blocking rib provided on a periphery of the ventilation area, an auxiliary air intake area provided around a periphery of the main air intake area, the auxiliary air intake area including a plurality of auxiliary air inlets, and at least one water-blocking grille disposed at each of the plurality of main air inlets and each of the plurality of auxiliary air inlets.

In some embodiments, the blower further includes a motor rear housing and a first rear housing, and the motor rear housing and the first rear housing define a mounting cavity that encloses the motor.

In some embodiments, a drainage hole in communication with an external environment is formed within a bottom portion of the mounting cavity.

In some embodiments, a rear vent is provided at an end of the motor rear housing, and a water-blocking cover is provided at the rear vent.

In some embodiments, each of at least one water-blocking grille includes an L-shaped pillar and an inverted L-shaped pillar, the L-shaped pillar being staggered relative the inverted L-shaped pillar.

In some embodiments, the motor further comprises a motor front cover including a plurality of front cover side holes formed through the motor front cover and positioned about the motor front cover in a circumferential direction, and an end portion of the motor front cover is provided with a plurality of front cover end holes corresponding to the plurality of main air inlets.

In other embodiments of the present disclosure, a blower includes a volute casing having a first housing and a second housing, the first housing and the second housing cooperating to define a volute cavity, an impeller disposed within the volute cavity, a motor configured to drive rotation of the impeller, the motor including an output shaft, a ventilation area formed on a sidewall of the second housing, a first rear housing and a motor rear housing cooperating to define a mounting cavity in which the motor is enclosed, a drainage hole formed in a bottom portion of the mounting cavity, the drainage hole being in fluid communication with an external environment, a rear vent formed at an end of the motor rear housing positioned opposite to the impeller, and a water-blocking cover disposed over the rear vent.

In these embodiments, the water-blocking cover includes an upper surface that is obliquely angled.

In some embodiments, the water-blocking cover includes an L-shaped pillar and an inverted L-shaped pillar, the L-shaped pillar being staggered relative to the inverted L-shaped pillar.

It should be appreciated that, in the embodiments described in the present disclosure, three waterproof structures are provided on the second housing, the three waterproof structures being the water-blocking convex rib, the second water-blocking grille and the third water-blocking grille. The water-blocking convex rib can block most of the water from entering the ventilation area. The air entering the ventilation area partially enters the mounting cavity through the auxiliary air inlets, while the remaining air flows into the mounting cavity through the main air inlets, thereby dissipating heat from the motor. Since the second water-blocking grille is provided at each main air inlet and the third water-blocking grille is provided at each auxiliary air inlet, both grilles can effectively block the rainwater, preventing the rainwater from entering the mounting cavity through the auxiliary air inlets and the main air inlets. The water-blocking cover and the first water-blocking grille are provided at the rear vent of the motor rear housing, so that the waterproof performance of the motor can be guaranteed while ensuring the heat dissipation of the motor. The drainage hole is also provided at the bottom of the mounting cavity, so that the rainwater that enters the mounting cavity can be drained out through the drainage hole, thereby preventing water accumulation inside the mounting cavity. Therefore, the blower described herein provides an excellent waterproof function while ensuring good heat dissipation performance, effectively preventing the rainwater from entering the mounting cavity and damaging the performance of the motor during rainy outdoor conditions. Rainwater is less likely to enter the interior of the motor, thereby preventing accidents such as electric leakage or motor burnout caused by water ingress into the motor.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of the present disclosure will be understood from the following embodiments described in detail herein and with reference to the accompanying drawings, in which like reference numerals represent the same or similar components.

FIG. 1 depicts a perspective view of a blower, according to one or more embodiments shown and described herein;

FIG. 2 depicts a sectional view of the blower of FIG. 1, according to one or more embodiments shown and described herein;

FIG. 3 depicts an exploded view of the blower of FIG. 1, according to one or more embodiment shown and described herein;

FIG. 4 depicts an exploded view of the blower of FIG. 1, according to one or more embodiments shown and described herein;

FIG. 5 depicts a perspective view of a second housing of the blower of FIG. 1, according to one or more embodiments shown and described herein;

FIG. 6 depicts a perspective view of the second housing of FIG. 5, according to one or more embodiments shown and described herein;

FIG. 7 depicts a sectional view of the second housing of FIG. 5, according to one or more embodiments shown and described herein; and

FIG. 8 depicts a sectional view of a motor rear housing of the blower of FIG. 1, according to one or more embodiments shown and described herein.

DETAILED DESCRIPTION

Embodiments of the present disclosure are illustrated below, and those skilled in the art may readily understand advantages and effects of the present disclosure from the content disclosed in the description. Although the description of the present disclosure will be introduced in conjunction with preferred embodiments, it does not mean that features of the present disclosure are limited to the implementations described herein. On the contrary, an objective of introducing the present disclosure in conjunction with the embodiments described herein is to encompass other options or modifications that may be extended on the basis of the claims of the present disclosure. The following description contains numerous specific details in order to provide deep understanding of the present disclosure. The present disclosure may also be implemented without these details. In addition, in order to avoid confusion of the present disclosure, some specific details will be omitted in the description. It should be noted that the embodiments and the features thereof in the present disclosure can be combined with each other without conflicts.

In addition, terms “first”, “second”, etc. are merely for the purpose of description, and should not be construed as indicating or implying the relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more features. In the description of the present disclosure, the meaning of “a plurality of” is two or more, unless specifically defined otherwise.

In the present disclosure, it should also be noted that the terms “arrange”, “connected”, and “connection” should be understood in a broad sense, unless otherwise explicitly specified and limited. For example, the connection may be a secured connection, a detachable connection, or an integral connection; or may be a mechanical connection or an electrical connection; or may be a direct connection, an indirect connection by means of an intermediate medium, or internal communication between two elements. For those of ordinary skill in the art, the specific meaning of the terms mentioned above in the embodiments should be understood in specific cases.

In the present disclosure, unless otherwise explicitly specified and defined, the first feature being “above” or “below” the second feature may include the first and second features being in direct contact, or may include the first and second features being not in direct contact but coming into contact through another feature between them. In addition, the first feature being “above”, “over”, and “on” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the level of the first feature is higher than that of the second feature. The first feature being “below”, “beneath”, and “on underside of” the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the level of the first feature is less than that of the second feature.

In the description of the present disclosure, the meaning of “a plurality of” is two or more, unless specifically defined otherwise.

The technical solutions of the present disclosure are further described in detail below in conjunction with specific embodiments and accompanying drawings:

Referring now to FIGS. 1-8, a blower with having waterproof function may include a volute casing 10, an impeller 3 disposed within the volute casing 10, and a motor 4 driving the rotation of the impeller 3. In these embodiments, the volute casing 10 may include a first housing 1 and a second housing 2, with the first housing 1 and the second housing 2 forming an internal cavity within the volute casing 10, such as a volute cavity 14, and a sidewall of the second housing 2 is provided with a ventilation area corresponding to the motor 4. As further depicted in FIGS. 1-8, the motor 4 may further include an output shaft 26 that passes through the ventilation area and is connected to the impeller 3. Furthermore, a water-blocking convex rib 21 may be provided on a periphery of the ventilation area. In these embodiments, the water-blocking convex rib 21 may be annular and may surround the periphery of the ventilation area.

As further depicted in FIGS. 1-8, a first rear housing 24 may be provided on the side of the second housing 2 away from (e.g., positioned opposite of) the first housing 1. In these embodiments, the first rear housing 24 may be integrally formed with the second housing 2. Furthermore, the first rear housing 24 and a motor rear housing 5 may together define a mounting cavity 6, with the mounting cavity 6 being configured to mount and enclose the motor 4.

In the embodiments described herein, the water-blocking convex rib 21 and the first rear housing 24 may be provided on an inner side and an outer side of the second housing 2, respectively. For example, the water-blocking convex rib 21 may be provided on the inner side of the second housing 2, and the first rear housing 24 may be provided on the outer side of the second housing 2.

Referring still to FIGS. 1-8, an air inlet 11 may be provided at a central position of the first housing 1. In these embodiments, air may enter the volute casing 10 from the air inlet 11 of the first housing 1 and be expelled through the air outlet 12 by the action of the impeller 3. When air flows within the volute casing 10, the water-blocking convex rib 21 may shelter the ventilation area from rainwater, preventing the rainwater from entering the interior of the motor 4 from the ventilation area, and preventing the operational performance of the motor 4 from being negatively impacted by the rainwater.

The air inlet 11 may further include a mesh cover 13, which may be disposed over the air inlet 11. In these embodiments, the mesh cover 13 may prevent foreign objects (e.g., leaves, insects, debris, etc.) from entering the volute cavity 14 and causing damage to the impeller 3. Moreover, in these embodiments, the mesh cover 13 may aid in dispersing and/or deflecting water droplets, thereby reducing the likelihood of water entering the blower.

As further depicted in FIGS. 1-8, the first rear housing 24 may surround the periphery of the ventilation area, allowing the air from the volute casing 10 to pass through the ventilation area of the second housing 2 into the mounting cavity 6, so that the air can enter the mounting cavity 6 from the ventilation area to dissipate heat from the interior of the motor 4. In this embodiment, the first rear housing 24 and the water-blocking convex rib 21 may be provided at corresponding positions on both sides of the second housing 2. For example, the first rear housing 24 may be provided on an outer side of the second housing 2 while the water-blocking convex rib 21 may be positioned on an inner side of the second housing 2, such that each of the first rear housing 24 and the water-blocking convex rib 21 are aligned about the ventilation area.

In the embodiments described herein, the mounting cavity 6 may further include a drainage hole 61 in communication with an external environment (e.g., outside, etc.) via a bottom portion of the mounting cavity 6. Accordingly, when rainwater enters the mounting cavity 6, the rainwater can flow down along a sidewall of the mounting cavity 6 and be drained out of the mounting cavity 6 through the drainage hole 61 formed in the bottom portion of the mounting cavity 6. In this embodiment, the drainage hole 61 may be provided at a position corresponding to a position in which the first rear housing 24 and the motor rear housing 5 are connected. For example, the drainage hole 61 may be provided adjacent a notch provided at an edge position of the first rear housing 24. When the motor rear housing 5 mates with the first rear housing 24, the notch may be blocked by the motor rear housing 5, thus forming the drainage hole 61.

Referring still to FIGS. 1-8, a rear vent may be provided at the end of the motor rear housing 5 away from (e.g., positioned opposite of) the first housing 1, a water-blocking cover 62 may be provided at the rear vent, and an upper surface of the water-blocking cover 62 may be arranged obliquely. For example, in these embodiments, the water-blocking cover 62 may be sloped and/or angled, such that the water-blocking cover 62 may shield the mounting cavity 6 from the rainwater, thereby preventing the rainwater from entering the mounting cavity 6 from the rear vent.

In the embodiments described herein, in order to further improve the rainwater protection performance of the rear vent, a first water-blocking grille 63 may be provided at the rear vent. The first water-blocking grille 63 may include a plurality of first baffles 631 arranged at the rear vent and spaced apart relative each other (e.g., each adjacent first baffle of the plurality of first baffles 631 may be spaced apart. Furthermore, in these embodiments, a plurality of first L-shaped plates 632 may be arranged on an inner side of each of the plurality of first baffles 631 adjacent to the mounting cavity 6.

As depicted in FIGS. 1-8, the plurality of L-shaped plates 632 and the plurality of first baffles 631 may be spaced relative one another such that the plurality of first L-shaped plates 632 and the plurality of first baffles 631 cooperate to form the first water-blocking grille 63. In these embodiments, the arrangement of the water-blocking grille 63 may not only block the rainwater from directly entering the mounting cavity 6 through the rear vent, but also allow the air to smoothly enter the mounting cavity 6 from the first water-blocking grille. It should be appreciated that the arrangement described herein may ensure that the heat dissipation performance of the motor 4 at the same time, and also ensures the waterproof performance of the motor 4.

In these embodiments, the second housing 2 may be provided with the ventilation area, such that air can enter the mounting cavity 6 from the ventilation area and dissipate heat from the motor 4 in the mounting cavity 6. Furthermore, in order to prevent the rainwater from entering the motor 4, the water-blocking convex rib 21 may be provided on the periphery of the ventilation area, serving to block the rainwater entering the ventilation area, thereby enhancing the waterproof performance of the motor 4, and allowing the blower to function normally outdoors even during rainy days.

As described herein above and depicted in FIGS. 1-8, the water-blocking cover 62 and the first water-blocking grille 63 may be provided at the rear vent on the motor rear housing 5, thereby ensuring the waterproof performance of the motor 4 while ensuring the heat dissipation of the motor 4. The drainage hole 61 may be further provided at the bottom of the mounting cavity 6, so that the rainwater entering the mounting cavity 6 can be drained out through the drainage hole 61, preventing water accumulation in the mounting cavity 6.

Accordingly, it should be appreciated that the blower depicted in FIGS. 1-8 may provide enhanced waterproof functionality while also ensuring good heat dissipation performance, thereby preventing rainwater from entering the mounting cavity 6 and inhibiting performance of the motor 4 during rainy outdoor conditions. For example, it should be further understood that the arrangement of the blower described herein may ensure that rainwater is less likely to enter the interior of the motor 4, thereby preventing accidents such as electrical leakage or motor 4 burnout due to water ingress into the motor 4.

Referring again to FIGS. 1 to 8, in some embodiment, a blower with a waterproof function may include a volute casing 10, an impeller 3 disposed within the volute casing 10, and a motor 4 driving the rotation of the impeller 3. In these embodiments, the volute casing 10 may include a first housing 1 and a second housing 2, with the first housing 1 and the second housing 2 cooperating to form an internal cavity 14 within the volute casing 10, such as a volute cavity 14. Furthermore, a sidewall of the second housing 2 may be provided with a ventilation area corresponding to the motor 4, an output shaft 26 of the motor 4 may pass through the ventilation area and may be connected to the impeller 3, and a water-blocking convex rib 21 may be provided on a periphery of the ventilation area. In these embodiments, the water-blocking convex rib 21 may be annular and surround the periphery of the ventilation area.

As further depicted in FIGS. 1-8, a first rear housing 24 may be provided on the side of the second housing 2 away from (e.g., positioned opposite of) the first housing 1. In these embodiments, the first rear housing 24 may be integrally formed with the second housing 2. Furthermore, the first rear housing 24 and a motor rear housing 5 may together define a mounting cavity 6, with the mounting cavity 6 being configured to mount and enclose the motor 4.

In the embodiments described herein, the water-blocking convex rib 21 and the first rear housing 24 may be provided on an inner side and an outer side of the second housing 2, respectively. For example, the water-blocking convex rib 21 may be provided on the inner side of the second housing 2, and the first rear housing 24 may be provided on the outer side of the second housing 2.

Referring still to FIGS. 1-8, an air inlet 11 may be provided at a central position of the first housing 1. In these embodiments, air may enter the volute casing 10 from the air inlet 11 of the first housing 1 and be expelled through the air outlet 12 by the action of the impeller 3. When air flows within the volute casing 10, the water-blocking convex rib 21 may shelter the ventilation area from rainwater, preventing the rainwater from entering the interior of the motor 4 from the ventilation area, and preventing the operational performance of the motor 4 from being negatively impacted by the rainwater.

The air inlet 11 may further include a mesh cover 13, which may be disposed over the air inlet 11. In these embodiments, the mesh cover 13 may prevent foreign objects (e.g., leaves, insects, debris, etc.) from entering the volute cavity 14 and causing damage to the impeller 3. Moreover, in these embodiments, the mesh cover 13 may aid in dispersing and/or deflecting water droplets, thereby reducing the likelihood of water entering the blower.

As further depicted in FIGS. 1-8, the first rear housing 24 may surround the periphery of the ventilation area, allowing the air from the volute casing 10 to pass through the ventilation area of the second housing 2 into the mounting cavity 6, so that the air can enter the mounting cavity 6 from the ventilation area to dissipate heat from the interior of the motor 4. In this embodiment, the first rear housing 24 and the water-blocking convex rib 21 may be provided at corresponding positions on both sides of the second housing 2. For example, the first rear housing 24 may be provided on an outer side of the second housing 2 while the water-blocking convex rib 21 may be positioned on an inner side of the second housing 2, such that each of the first rear housing 24 and the water-blocking convex rib 21 are aligned about the ventilation area.

In the embodiments described herein, the mounting cavity 6 may further include a drainage hole 61 in communication with an external environment (e.g., outside, etc.) via a bottom portion of the mounting cavity 6. Accordingly, when rainwater enters the mounting cavity 6, the rainwater can flow down along a sidewall of the mounting cavity 6 and be drained out of the mounting cavity 6 through the drainage hole 61 formed in the bottom portion of the mounting cavity 6. In this embodiment, the drainage hole 61 may be provided at a position corresponding to a position in which the first rear housing 24 and the motor rear housing 5 are connected. For example, the drainage hole 61 may be provided adjacent a notch provided at an edge position of the first rear housing 24. When the motor rear housing 5 mates with the first rear housing 24, the notch may be blocked by the motor rear housing 5, thus forming the drainage hole 61.

Referring still to FIGS. 1-8, a rear vent may be provided at the end of the motor rear housing 5 away from (e.g., positioned opposite of) the first housing 1, a water-blocking cover 62 may be provided at the rear vent, and an upper surface of the water-blocking cover 62 may be arranged obliquely. For example, in these embodiments, the water-blocking cover 62 may be sloped and/or angled, such that the water-blocking cover 62 may shield the mounting cavity 6 from the rainwater, thereby preventing the rainwater from entering the mounting cavity 6 from the rear vent.

In the embodiments described herein, in order to further improve the rainwater protection performance of the rear vent, a first water-blocking grille 63 may be provided at the rear vent. The first water-blocking grille 63 may include a plurality of first baffles 631 arranged at the rear vent and spaced apart relative each other (e.g., each adjacent first baffle of the plurality of first baffles 631 may be spaced apart). Furthermore, in these embodiments, a plurality of first L-shaped plates 632 may be arranged on an inner side of each of the plurality of first baffles 631 adjacent to the mounting cavity 6.

As depicted in FIGS. 1-8, the plurality of L-shaped plates 632 and the first baffles 631 may be spaced relative one another such that the plurality of first L-shaped plates 632 and the plurality of first baffles 63 cooperate to form the first water-blocking grille 63. In these embodiments, the arrangement of the water-blocking grille 63 may not only block the rainwater from directly entering the mounting cavity 6 through the rear vent, but also allow the air to smoothly enter the mounting cavity 6 from the first water-blocking grille. It should be appreciated that the arrangement described herein may ensure that the heat dissipation performance of the motor 4 at the same time, and also ensures the waterproof performance of the motor 4.

Furthermore, in this embodiment the ventilation area may include a main air intake area 22 disposed at a central position of the ventilation area and an auxiliary air intake area 23 disposed about a periphery of the main air intake area 22. In these embodiments, the main air intake area 22 may be provided with a plurality of main air inlets 221 arranged in a circumferential direction, and a second water-blocking grille 222 may be provided at each of the plurality of main air inlets 221.

The main air intake area 22 may further be provided with a boss 223 protruding into the volute cavity 14. In these embodiments, the boss 223 may have a circular shape, and the plurality of main air inlets 221 may be provided on the boss 223. Although the boss 223 is depicted and described herein as including a circular shape, it should be further appreciated that the boss 223 may take any shape without departing from the scope of the present disclosure.

Referring still to FIGS. 1-8, in some embodiments, the boss 223 may protrude towards the inside of the second housing 2. In these embodiments, a central through hole 224 may be provided at a center of the boss 223, and the output shaft 26 of the motor 4 may pass through the central through hole 224 and be fixedly connected to the impeller 3. The plurality of main air inlets 221 may be provided in the circumferential direction of the central through hole 224. For example, in some embodiments, the boss 223 may be provided with four main air inlets 221, such that the air may enter the mounting cavity 6 from the plurality of main air inlets 221 (e.g., four main air inlets) to dissipate heat from the motor 4.

As further depicted in FIGS. 1-8, in these embodiments, a recess 225 may be formed on the boss 223 located on an outer side of the second housing 2, and the end of the motor 4 adjacent to the output shaft 26 may abut against the recess 225. Furthermore, the motor 4 may include a motor front cover 41 and a motor rear cover 42, with the motor front cover 41 being provided with a plurality of front cover side holes 411 arranged in a circumferential direction. In these embodiments, an end portion of the motor front cover 41 may be similarly provided with a plurality of front cover end holes 412 corresponding to the plurality of main air inlets 221. For example, in these embodiments, at least one of the plurality of front cover end holes 412 may be associated with at least one of the plurality of main air inlets 221, such that a number of the plurality of front cover ends holes 412 is equal to a number of the plurality of main air inlets 221.

In these embodiments, the motor rear cover 42 may be provided with a plurality of rear cover side holes 421 arranged in a circumferential direction, and an end portion of the motor rear cover 42 may be provided with a plurality of rear cover end holes 422. It should be appreciated that the motor rear cover 42 and the motor front cover 41 may be provided with any number of holes as may be desired and/or needed to improve the heat dissipation of a stator and a rotor inside the motor 4.

In addition, the plurality of front cover end holes 412 on the motor front cover 41 may correspond to the plurality of main air inlets 221, such that air can flow through the plurality of main air inlets 221 and the plurality of front cover end holes 412 to dissipate heat from components such as the stator and the rotor inside the motor 4, achieving a good heat dissipation effect on the interior of the motor 4.

Referring still to FIGS. 1-8, in some embodiments, the blower may further include a second water-blocking grille 222 provided at each of the plurality of main air inlets 221. In these embodiments, each of the second water-blocking grilles 222 may include a positive L-shaped pillar 2221 and an inverted L-shaped pillar 2222 which are staggered relative one another, such that air enters the interior of the motor 4 from a passage between the positive L-shaped pillar 2221 and the inverted L-shaped pillar 2222. It should be appreciated that this arrangement may prevent rainwater from entering the interior of the motor 4 and avoid damage to the components inside the motor 4.

In these embodiments, a second rear housing 25 may also be provided in an outer circumferential direction of the recess 225. Like the first rear housing 24, the second rear housing 25 may be provided on an outer side of the second housing 2, and the first rear housing 24 may be disposed on the periphery of the second rear housing 25. In addition, a second rear housing diameter of the second rear housing 25 may be larger than a recess diameter of the recess 225, an inner sidewall of the second rear housing 25 may be provided with a plurality of rear housing ridges 251 extending in an axial direction thereof, the end of the motor front cover 41 may abut against the recess 225, and an outer sidewall of the motor front cover 41 may abut against the plurality of rear housing ridges 251.

It should be understood that, in the embodiments described herein, the plurality of rear housing ridges 251 may serve to fix and abut against the sidewall of the motor front cover 41, creating a gap between the outer sidewall of the motor front cover 41 and the inner side of the second rear housing 25. The gap may allow heat inside the motor 4 to dissipate toward the mounting cavity 6 through the gap, and further improving the heat dissipation performance of the motor 4.

The auxiliary air intake area 23 may be provided with a plurality of auxiliary air inlets 231, and a third water-blocking grille 232 may be provided at each of the plurality of auxiliary air inlets 231. It should be further appreciated that, in these embodiments, the auxiliary air intake area 23 is similar to an annular area in which the plurality of auxiliary air inlets 231 are provided.

Referring still to FIGS. 1-8, in these embodiments, the second rear housing 25 may be positioned corresponding to the main air intake area 22, and the first rear housing 24 may be positioned corresponding to the ventilation area, such that an auxiliary ventilation passage 233 may be formed between the second rear housing 25 and the first rear housing 24. Accordingly, air may pass through the plurality of auxiliary air inlets 231 and flow through the auxiliary ventilation passage 233 before entering the mounting cavity 6, and the air may aid in cooling and dissipating heat from the motor 4 inside the mounting cavity 6. A third water-blocking grille 232 may also be provided at each of the plurality of auxiliary air inlets 231, with the third water-blocking grille shelter from the rainwater at the auxiliary air inlet 231, further improving the waterproof performance.

It should be appreciated that, in the embodiments described herein, three waterproof structures are provided on the second housing 2. For example, in these embodiments, the three waterproof structures may include the water-blocking convex rib 21, the second water-blocking grille 222 and the third water-blocking grille 232. The water-blocking convex rib 21 may block the majority of the water from entering the ventilation area. The air entering the ventilation area may partially enter the mounting cavity 6 through the auxiliary air inlets 231, while a remaining portion of the air may enter the mounting cavity 6 through the plurality of main air inlets 221, thereby dissipating heat from the motor 4. Furthermore, because a second water-blocking grille 222 is provided at each of the plurality of main air inlets 221 and a third water-blocking grille 232 is provided at each of the plurality of auxiliary air inlets 231, both of the second water-blocking grille 222 and the third water-blocking grille 232 can effectively block rainwater, thereby preventing the rainwater from entering the mounting cavity 6 through the plurality of auxiliary air inlets 231 or the plurality of main air inlets 221. In these embodiments, the water-blocking cover 62 and the first water-blocking grille 63 may be provided at the rear vent on the motor rear housing 5, thereby ensuring the waterproof performance of the motor 4 while ensuring the heat dissipation of the motor 4. The drainage hole 61 may be further provided at the bottom of the mounting cavity 6, so that the rainwater entering the mounting cavity 6 can be drained out through the drainage hole 61, preventing water accumulation in the mounting cavity 6.

In view of the foregoing, it should be appreciated that the blower described herein provides excellent waterproof function while ensuring good heat dissipation performance, effectively preventing the rainwater from entering the mounting cavity 6 and damaging the performance of the motor 4 during rainy outdoor conditions. For example, rainwater is less likely to enter the interior of the motor 4 of the blower described herein, thereby preventing accidents such as electrical leakage or motor 4 burnout due to water ingress into the motor 4.

The above-mentioned embodiments are only preferred solutions of the present disclosure which should not be construed as limiting in any way, and there are other variants and modifications as long as not beyond the scope of the technical solutions defined in the claims.

Although the present disclosure has been illustrated and described with reference to some preferred implementations of the present disclosure, those of ordinary skill in the art should understand that the above contents are further detailed descriptions for the present disclosure with reference to specific implementations, and it cannot be assumed that the specific implementations of the present disclosure are limited to these descriptions. Those skilled in the art can make various changes in form and details, including several simple deduction or substitutions, without departing from the spirit and scope of the present disclosure.

The foregoing descriptions are only embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, various changes and variations can be made to the present disclosure. Any modifications, equivalent replacements, and improvements made without departing from the spirit and principle of the present disclosure shall fall within the scope of the claims of the present disclosure.

Furthermore, it should be apparent that the present disclosure is not limited to the details of the above-mentioned exemplary embodiments, and the present disclosure can be implemented in other specific forms without departing from the spirit or basic features of the present disclosure. Therefore, no matter from which point of view, the embodiments should all be regarded as exemplary and non-limiting. The scope of the present disclosure is defined by the appended claims rather than the above-mentioned description, and therefore it is intended that all changes which fall within the meaning and range of equivalents of the claims are embraced in the present disclosure. Any reference signs in the claims should not be construed as limiting the claims involved. In addition, it is apparent that the word “comprise/include” does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used for designations and do not represent any particular order.

It should be understood that the embodiments as shown in the drawings only show the optional shapes, sizes and arrangements of optional components of the air valve and inflatable products according to the present disclosure, which are merely illustrative but not restrictive, and other shapes, sizes and arrangements may be employed without departing from the idea and scope of the present disclosure.

The technical contents and technical features of the present disclosure are disclosed above, but it can be understood that those skilled in the art would have made various variations and improvements to the concepts disclosed above under the creative idea of the present disclosure, and all the variations and improvements fall into the scope of protection of the present disclosure. The descriptions of the above embodiments are illustrative but not restrictive, and the scope of protection of the present disclosure is determined by the claims.