CN220507015U - Dust filtering assembly and air conditioner thereof - Google Patents

Abstract

The application belongs to the technical field of electric appliances, and particularly relates to a dust filtering component and an air conditioner thereof; the dust filter screen is used for solving the technical problem that dust influences the service life of the dust filter screen due to the fact that the dust filter screen is exposed to the environment in the related art; the application provides a dust filtration subassembly, include: the dust filtering net comprises a dust filtering part for filtering impurities in the air entering through the air inlet of the air conditioner and a sealing part for sealing the air inlet of the air conditioner; the driving mechanism is used for driving the dust filtering net to move so that the dust filtering part or the sealing part moves to the air inlet; the collecting mechanism is used for cleaning and collecting impurities adsorbed on the dust filtering part; the cleaning mechanism is used for cleaning the impurities collected by the collecting mechanism; by closing the air inlet when the air conditioner is not needed, dust impurities in the environment are prevented from influencing the service life of the dust filtering net.

Description

Dust filtering assembly and air conditioner thereof

Technical Field

The application belongs to the technical field of electric appliances, and particularly relates to a dust filtering component and an air conditioner thereof.

Background

An air conditioner is an apparatus for adjusting and controlling parameters such as temperature, humidity, and flow rate of ambient air in a building or structure by manual means. The main forms of the air conditioner are as follows: vertical air conditioner, on-hook air conditioner, central air conditioner, etc.; compared with an on-hook air conditioner, the vertical air conditioner has a longer and larger air outlet, and is convenient for rapidly realizing refrigeration and heating effects.

The prior art's vertical air conditioner includes the casing, has air intake and air outlet on the casing, in order to be convenient for filter the dust in the air of entering when the air intake of air conditioner is bloied, sets up the dust filter screen on the air intake generally, and the impurity in the dust filter screen can filter the air to prevent that impurity in the air from entering into and causing the influence to other parts in the casing, the air after the filtration is discharged along the air outlet after handling and is played the effect of refrigeration or heating indoor.

However, the air inlet of the casing and the dust filter net are exposed to the environment, and when the air conditioner is not in operation, more dust is adsorbed on the dust filter net, so that the service life of the dust filter net is affected.

Disclosure of Invention

The application provides a dust filtering component and an air conditioner thereof, which are used for solving the technical problem that dust influences the service life of a dust filtering net due to the fact that the dust filtering net is exposed in the environment in the related art.

In one aspect, the present application provides a dust filtration assembly comprising:

the dust filtering net comprises a dust filtering part for filtering impurities in the air entering through the air inlet of the air conditioner and a sealing part for sealing the air inlet of the air conditioner;

the driving mechanism is used for driving the dust filtering net to move so that the dust filtering part or the sealing part moves to the air inlet;

the collecting mechanism is used for cleaning and collecting impurities adsorbed on the dust filtering part;

the cleaning mechanism is used for cleaning the impurities collected by the collecting mechanism.

Through adopting above-mentioned technical scheme, the dust impurity that strain dirt portion and be convenient for filter in the air that air conditioner air inlet got into, when not needing to use the air conditioner, drive the closing part through actuating mechanism and remove for the air intake of air conditioner is closed to the closing part, when preventing that the air conditioner is not running, the dust in the middle of the environment adsorbs the life that influences the dirt portion of straining on straining dirt portion, collection mechanism is convenient for collect the dirt impurity of absorbing on straining dirt portion, thereby further prolonged the life of straining dirt portion, and cleaning mechanism is convenient for the impurity clearance to collection mechanism collection, make need not regularly clear up collection mechanism, the result of use of whole dust filtration subassembly has been improved.

In some embodiments, the dust filtering net is a flexible net made of flexible material, and the driving mechanism is used for driving the dust filtering net to roll or unreel, so that the dust filtering part or the sealing part moves to the air inlet.

Through adopting above-mentioned technical scheme, through setting up the dust portion of straining into flexible material and making to reduced the space occupation that dust portion and closing part are located the air conditioner casing, drive dust portion or closing part through actuating mechanism and remove to the air intake, make the filtration that dust portion can realize dust impurity when the air conditioner is operated, the closing part can be closed the air intake when the air conditioner is not operated.

In some embodiments, the driving mechanism includes an upper rotating shaft, a lower rotating shaft and a rotating member, the upper rotating shaft is disposed above the air inlet, the lower rotating shaft is disposed below the air inlet, edges of the sealing portion and the dust filtering portion, which are far away from each other, are respectively fixedly disposed on the upper rotating shaft and the lower rotating shaft, the dust filtering portion and the sealing portion are used for winding the upper rotating shaft and the lower rotating shaft, and the rotating member is used for driving the upper rotating shaft and the lower rotating shaft to synchronously and co-rotate.

Through adopting above-mentioned technical scheme, when needs drive and strain dirt portion and remove to the air intake, drive through the rotating member and go up pivot and lower pivot and rotate simultaneously the syntropy for strain dirt portion and lie in upper pivot or lower pivot and unreel, and seal portion rolling is in upper pivot or lower pivot, make and strain dirt portion and can realize the filtration of dust impurity, when needs drive seal portion and remove to the air intake, unreel through driving seal portion, drive and strain dirt portion rolling, make seal portion remove to the air intake on, thereby make seal portion seal the air intake.

In some embodiments, the rotating member includes an upper rotating motor for driving the upper rotating shaft to rotate and a lower rotating motor for driving the lower rotating shaft to rotate.

Through adopting above-mentioned technical scheme, be convenient for drive the pivot through last rotation motor and rotate, be convenient for drive down the pivot through lower rotation motor and rotate to make last pivot and lower pivot drive dust filtering portion and closed portion rolling unreel, adopt the setting simple structure of last rotation motor and lower rotation motor, improved the driving effect to dust filtering portion and closed portion.

In some embodiments, the dust filter further comprises a guide member disposed at both sides of the air inlet for guiding movement of the dust filter and the closing portion.

Through adopting above-mentioned technical scheme, the setting of guide is convenient for filter dirt portion and the effect that the removal of closing part played the direction when dirt portion and closing part remove to prevent to filter dirt portion and closing part and the air intake between the deviation appears when removing, indirectly improved the filter effect of dirt portion, improved the closing effect of closing part to the air intake.

In some embodiments, the guide member includes a guide rail, the guide rail is disposed on two sides of the air inlet, and sliding grooves are disposed on opposite surfaces of the guide rail on two sides, the sliding grooves are disposed along a length direction of the guide rail, and the sliding grooves are used for moving in edges of the dust filtering portion and the sealing portion.

Through adopting above-mentioned technical scheme, when straining dirt portion and closing part remove, the edge that strain dirt portion and closing part is located the spout and removes to make the guide rail drive the spout and play the effect of direction to straining dirt portion and closing part, the setting structure of adoption guide rail and spout is simple, has improved the direction effect to straining dirt portion and closing part.

In some embodiments, the collecting mechanism comprises a collecting tank and a scraping member, the collecting tank is arranged in the shell and located at the position where the lower rotating shaft is located, the lower rotating shaft is rotatably arranged in the collecting tank, the scraping member is arranged in the collecting tank, and the scraping member is used for scraping impurities adsorbed on the dust filtering portion down into the collecting tank when the dust filtering portion is unreeled and rolled.

Through adopting above-mentioned technical scheme, when the dust filtering part is located down to roll up on the rod and unreel, strike off the piece and be convenient for scrape down to the collecting vat with dust impurity of straining the dust part on absorbing to realized straining dust part on dust impurity's collection, further improved dust filtering part's result of use and life, adopted collecting vat and strike off the setting of piece to have improved the collecting effect to dust impurity on straining dust part.

In some embodiments, the scraping member includes a brush disposed in the collecting tank along a length direction of the lower rotating shaft, the brush being abutted with the dust filtering portion.

Through adopting above-mentioned technical scheme, when straining dirt portion rolling unreels, with straining dirt portion butt's brush can brush down dust impurity to the collecting vat on the dirt portion of straining, adopt the setting simple structure of brush, improved the clearance effect to straining dirt portion dust impurity.

In some embodiments, the cleaning mechanism includes a water inlet tube in communication with one end of the collection tank and a water outlet tube in communication with the other end of the collection tank.

Through adopting above-mentioned technical scheme, through leading in the clearance water to the collecting vat along the inlet tube for the clearance water takes away dust impurity and discharges along the outlet pipe when passing through the collecting vat, has realized the clearance to the dust impurity of collecting in the collecting vat.

On the other hand, the application provides an air conditioner, including straining dirt subassembly, the air conditioner includes the casing, be provided with the air intake on the casing, strain dirt portion be used for right impurity in the air that the air intake got into filters, actuating mechanism is used for driving the closing part removes, so that the closing part is opened and close the air intake.

Through adopting above-mentioned technical scheme, when not needing to use the air conditioner, drive the closing part through actuating mechanism and remove for the closing part seals the air intake, makes the air conditioner can not influence the life of straining dirt portion in the dust impurity in the environment when not using, has improved the result of use of straining dirt portion.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic diagram of a dust filter assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a hidden collection trough of a dust filter assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of a guide rail of a dust filtering assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of a collection tank of a dust filter assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of an air conditioner according to an embodiment of the present application.

Reference numerals illustrate:

100. a dust filtering net; 110. a closing part; 111. a dust filtering part;

120. an upper rotating shaft; 121. a lower rotating shaft; 122. a top rotating motor; 123. a lower rotating motor;

130. a guide rail; 131. a chute;

140. a collection mechanism; 141. a collection tank; 142. a brush;

150. a cleaning mechanism; 151. a water inlet pipe; 152. a water outlet pipe;

200. a housing; 210. and an air inlet.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The prior art's vertical air conditioner includes the casing, has air intake and air outlet on the casing, in order to be convenient for filter the dust in the air of entering when the air intake of air conditioner is bloied, sets up the dust filter screen on the air intake generally, and the impurity in the dust filter screen can filter the air to prevent that impurity in the air from entering into and causing the influence to other parts in the casing, the air after the filtration is discharged along the air outlet after handling and is played the effect of refrigeration or heating indoor.

However, the air inlet of the casing and the dust filter net are exposed to the environment, and when the air conditioner is not in operation, more dust is adsorbed on the dust filter net, so that the service life of the dust filter net is affected.

In order to solve the technical problem, the application provides a dust filtering component and an air conditioner thereof.

Referring to fig. 1 and 2, a dust filter assembly includes a dust filter screen 100, a drive mechanism, a collection mechanism 140, and a cleaning mechanism 150.

Referring to fig. 1 and 2, the dust filter net 100 includes a dust filter part 111 for filtering impurities in air taken in through an air conditioner air inlet 210 and a closing part 110 for closing the air conditioner air inlet 210; the dust filter 100 is a flexible net made of flexible material, and the dust filter 111 may be made of plastic; the closure 110 may likewise be made of plastic; the dust filtering part 111 is provided on the closing part 110; in this embodiment, the width of the sealing portion 110 is the same as that of the dust filtering portion 111, the sealing portion 110 and the dust filtering portion 111 are integrally provided, and the width of the sealing portion 110 and the dust filtering portion 111 is the same as that of the air inlet 210.

Referring to fig. 1 and 2, the driving mechanism is used for driving the dust filtering net 100 to move, so that the dust filtering part 111 or the sealing part 110 moves to the air inlet 210; the driving mechanism includes an upper rotating shaft 120, a lower rotating shaft 121, and a rotating member.

Referring to fig. 1 and 2, the upper rotating shaft 120 is disposed above the air inlet 210, the lower rotating shaft 121 is disposed below the air inlet 210, edges of the sealing portion 110 and the dust filtering portion 111 away from each other are fixedly disposed on the upper rotating shaft 120 and the lower rotating shaft 121, respectively, the dust filtering portion 111 and the sealing portion 110 are wound around the upper rotating shaft 120 and the lower rotating shaft 121, in this embodiment, the edge of the sealing portion 110 away from the dust filtering portion 111 is fixedly disposed on the upper rotating shaft 120, the sealing portion 110 is wound around the upper rotating shaft 120, the edge of the dust filtering portion 111 away from the sealing portion 110 is fixedly disposed on the lower rotating shaft 121, and the dust filtering portion 111 is wound around the lower rotating shaft 121.

Referring to fig. 1 and 2, the rotating member is used to drive the upper rotating shaft 120 and the lower rotating shaft 121 to rotate synchronously and in the same direction; the rotating member includes an upper rotating motor 122 and a lower rotating motor 123, the upper rotating motor 122 is used for driving the upper rotating shaft 120 to rotate, and the lower rotating motor 123 is used for driving the lower rotating shaft 121 to rotate; the upper rotating motor 122 and the lower rotating motor 123 drive the upper rotating shaft 120 and the lower rotating shaft 121 to rotate in the same direction simultaneously, so that the dust filtering part 111 can be positioned on the upper rotating shaft 120 for winding or unwinding, the sealing part 110 is positioned on the lower rotating shaft 121 for winding when the dust filtering part 111 is unwound, and the sealing part 110 is positioned on the lower rotating shaft 121 for unwinding when the dust filtering part 111 is wound, so that the dust filtering part 111 or the sealing part 110 moves to the air inlet 210, and when the dust filtering part 111 is not needed, the sealing part 110 can seal the air inlet 210 to prevent dust impurities in the environment from affecting the dust filtering part 111.

In other embodiments, referring to fig. 1 and 2, the rotating member may be replaced by a sprocket, a chain and a motor, the ends of the upper rotating shaft 120 and the lower rotating shaft 121 are sleeved and fixedly connected with the sprocket, the chain is wound on two sprockets, and one of the sprockets is driven to rotate by the motor, so that the sprocket drives the upper rotating shaft 120 and the lower rotating shaft 121 to synchronously rotate by the chain, and the upper rotating shaft 120 and the lower rotating shaft 121 can simultaneously and co-directionally rotate.

Referring to fig. 2 and 3, the dust filtering assembly further includes guide members disposed at both sides of the air inlet 210, for guiding movement of the dust filtering part 111 and the closing part 110; the guide piece comprises a guide rail 130, the two sides of the air inlet 210 are respectively provided with the guide rail 130, the opposite surfaces of the guide rails 130 on the two sides are respectively provided with a chute 131, the cross section of each chute 131 is U-shaped, each chute 131 is arranged along the length direction of the guide rail 130, the two ends of each chute 131 penetrate through the guide rail 130, each chute 131 is used for allowing the edges of the dust filtering part 111 and the sealing part 110 to move in, and when the dust filtering part 111 and the sealing part 110 are unreeled or rolled, the edges of the dust filtering part 111 and the sealing part 110 are positioned in the chute 131, so that the movement of the dust filtering part 111 and the sealing part 110 is guided.

In other embodiments, flexible guide strips may be disposed at two side edges of the dust filtering portion 111 and the sealing portion 110, and the guide strips are disposed in cooperation with the "U" shaped chute 131, so that the dust filtering portion 111 and the sealing portion 110 drive the guide strips to move in the chute 131 when moving, and further guiding effect is achieved on the dust filtering portion 111 and the sealing portion 110.

Referring to fig. 1 and 4, the collection mechanism 140 is configured to clean and collect impurities adsorbed on the dust filtering part 111; the collecting mechanism 140 includes a collecting tank 141 and a scraper.

Referring to fig. 1 and 4, the collecting tank 141 is disposed in the housing 200 and is located at a position where the lower rotating shaft 121 is located, the lower rotating shaft 121 is rotatably disposed in the collecting tank 141, the lower rotating motor 123 is fixedly disposed on an outer wall of the collecting tank 141, one end of the lower rotating shaft 121 is disposed on a sidewall of the collecting tank 141 in a penetrating manner and is fixed to a driving end of the lower rotating motor 123, and a scraping member is disposed in the collecting tank 141 and is used for scraping impurities adsorbed on the dust filtering portion 111 into the collecting tank 141 when the dust filtering portion 111 is unreeled and wound; in this embodiment, the cross section of the collecting tank 141 is set to be "U" shape, and in other embodiments, the collecting tank 141 may be set to be closed, and a strip-shaped hole for the dust filtering part 111 to pass through is formed in the collecting tank 141.

As shown in fig. 4, the scraping member includes a brush 142, the brush 142 being disposed in the collecting groove 141 along a length direction of the lower rotating shaft 121, the brush 142 being abutted against the dust filtering part 111; in other embodiments, the brush 142 may be replaced with a dust-sticking roller capable of sticking dust, and the dust is removed by rotating the dust-sticking roller in the collecting tank 141 and driving the dust-sticking roller to abut against the dust filtering portion 111, and driving the dust-sticking roller to rotate when the dust filtering portion 111 moves.

As shown in fig. 1, the cleaning mechanism 150 is configured to clean the impurities collected by the collection mechanism 140; the cleaning mechanism 150 comprises a water inlet pipe 151 and a water outlet pipe 152, wherein the water inlet pipe 151 is communicated with one end of the collecting tank 141, and the water outlet pipe 152 is communicated with the other end of the collecting tank 141; when the dust and impurity collected in the collecting tank 141 needs to be cleaned, cleaning water is introduced into the collecting tank 141 along the water inlet pipe 151, so that the cleaning water takes away the dust and impurity after passing through the collecting tank 141 and is discharged along the water outlet pipe 152, and in other embodiments, a water outlet pipe of condensed water generated by the air conditioner can be communicated with the water inlet pipe 151, so that the condensed water can clean the impurity in the collecting tank 141.

As shown in fig. 5, an air conditioner includes a dust filtering assembly according to any of the foregoing embodiments, the air conditioner includes a housing 200, an air inlet 210 is provided on the housing 200, a dust filtering portion 111 is used for filtering impurities in air entering through the air inlet 210, and a driving mechanism is used for driving the sealing portion 110 to move, so that the sealing portion 110 opens and closes the air inlet 210.

Referring to fig. 1 and 5, specifically, the upper rotating shaft 120 is disposed on the inner wall of the housing 200 and is located above the air inlet 210, the lower rotating shaft 121 is disposed on the inner wall of the frame and is located below the air inlet 210, the upper rotating motor 122 and the lower rotating motor 123 are both fixedly disposed on the inner wall of the housing 200, the guide rail 130 is fixedly disposed on two side edges of the air inlet 210, and the collecting groove 141 is fixedly disposed on the inner wall of the housing 200 and is located below the air inlet 210.

The upper rotating shaft 120 and the lower rotating shaft 121 are driven to rotate by the upper rotating motor 122 and the lower rotating motor 123, when the dust filtering part 111 is positioned on the lower rotating shaft 121 and is wound up, the sealing part 110 is positioned on the upper rotating shaft 120 and is wound up, when the air conditioner is used, the dust filtering part 111 is driven to move to the air inlet 210, dust impurities in the air are filtered by the dust filtering part 111, when the air conditioner is not used, the sealing part 110 is driven to move to the air inlet 210, the sealing part 110 seals the air inlet 210, and the influence of the dust impurities in the environment on the dust filtering part 111 inside the shell 200 is prevented.

While the present application has been described in connection with the preferred embodiments illustrated in the accompanying drawings, it will be readily understood by those skilled in the art that the scope of the application is not limited to such specific embodiments, and the above examples are intended to illustrate the technical aspects of the application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A dust filter assembly, comprising:

a dust filter (100), the dust filter (100) comprising a dust filtering part (111) for filtering impurities in air entering through an air conditioner air inlet (210) and a closing part (110) for closing the air conditioner air inlet (210);

the driving mechanism is used for driving the dust filtering net (100) to move so as to enable the dust filtering part (111) or the sealing part (110) to move onto the air inlet (210);

a collection mechanism (140), wherein the collection mechanism (140) is used for cleaning and collecting impurities adsorbed on the dust filtering part (111);

and the cleaning mechanism (150) is used for cleaning the impurities collected by the collecting mechanism (140).

2. A dust filter assembly according to claim 1, characterized in that the dust filter screen (100) is provided as a flexible screen of flexible material, and the drive mechanism is adapted to bring the dust filter screen (100) to roll or unroll so that the dust filter portion (111) or the closure portion (110) is moved to the air inlet (210).

3. The dust filtering assembly according to claim 2, wherein the driving mechanism comprises an upper rotating shaft (120), a lower rotating shaft (121) and a rotating member, the upper rotating shaft (120) is arranged above the air inlet (210), the lower rotating shaft (121) is arranged below the air inlet (210), edges, away from each other, of the sealing portion (110) and the dust filtering portion (111) are fixedly arranged on the upper rotating shaft (120) and the lower rotating shaft (121) respectively, the dust filtering portion (111) and the sealing portion (110) are used for winding on the upper rotating shaft (120) and the lower rotating shaft (121), and the rotating member is used for driving the upper rotating shaft (120) and the lower rotating shaft (121) to synchronously and co-directionally rotate.

4. A dust filter assembly according to claim 3, wherein the rotating member comprises an upper rotating motor (122) and a lower rotating motor (123), the upper rotating motor (122) being adapted to drive the upper rotating shaft (120) in rotation, and the lower rotating motor (123) being adapted to drive the lower rotating shaft (121) in rotation.

5. The dust filter assembly of claim 4, further comprising guides disposed on either side of the air inlet (210) for guiding movement of the dust filter portion (111) and the closure portion (110).

6. The dust filter assembly according to claim 5, wherein the guide member comprises a guide rail (130), the guide rail (130) is arranged at two sides of the air inlet (210), sliding grooves (131) are formed in opposite surfaces of the guide rail (130) at two sides, the sliding grooves (131) are arranged along the length direction of the guide rail (130), and the sliding grooves (131) are used for allowing edges of the dust filter part (111) and the sealing part (110) to move in.

7. The dust filter assembly of any one of claims 3-6, wherein the collecting mechanism (140) comprises a collecting tank (141) and a scraping member, the collecting tank (141) is arranged in the housing (200) and is located at a position where the lower rotating shaft (121) is located, the lower rotating shaft (121) is rotatably arranged in the collecting tank (141), the scraping member is arranged in the collecting tank (141), and the scraping member is used for scraping impurities adsorbed on the dust filter part (111) into the collecting tank (141) when the dust filter part (111) is unreeled and wound.

8. The dust filter assembly of claim 7, wherein the scraping member includes a brush (142), the brush (142) being disposed in the collecting tank (141) along a length direction of the lower rotating shaft (121), the brush (142) abutting against the dust filter portion (111).

9. The dust filter assembly of claim 7, wherein the cleaning mechanism (150) includes a water inlet pipe (151) and a water outlet pipe (152), the water inlet pipe (151) being in communication with one end of the collection tank (141), the water outlet pipe (152) being in communication with the other end of the collection tank (141).

10. An air conditioner characterized by comprising the dust filtering assembly according to any one of claims 1-9, wherein the air conditioner comprises a shell (200), an air inlet (210) is arranged on the shell (200), the dust filtering part (111) is used for filtering impurities in air entering through the air inlet (210), and the driving mechanism is used for driving the sealing part (110) to move so that the sealing part (110) opens and closes the air inlet (210).