CN212775667U

CN212775667U - Air valve assembly and indoor unit

Info

Publication number: CN212775667U
Application number: CN202021922693.7U
Authority: CN
Inventors: 薛寒冬; 谢有富; 白海龙; 邓朝胜
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-03-23
Anticipated expiration: 2030-09-04

Abstract

The utility model provides an air valve assembly and indoor unit. The blast gate subassembly includes fixed body and rotating member. The air valve component and the indoor unit provided by the utility model are respectively provided with the air inlet at the end part and the side wall of the fixed pipe body, and the working states of the two air inlets are switched by utilizing the rotating piece arranged in the fixed pipe body, the whole volume of the air valve component is limited in the size of the fixed pipe body, the occupied space of the air valve component is reduced, the central angle angles corresponding to the first sealing element and the second sealing element are the same, and after the driving mechanism directly drives the rotating element to rotate for a set angle, the size of the corresponding air inlet is ensured to be maximized, the air flow of the air valve component is ensured to be maximized, the filtering mechanism is arranged at the first air inlet to filter the fresh air introduced by the first air inlet, and set up inside the fixed body and purify the mechanism and can all purify the inside new trend of getting into the fixed body and return air, guarantee the air-out cleanliness of indoor set.

Description

Air valve assembly and indoor unit

Technical Field

The utility model relates to an air treatment equipment technical field, especially an air valve subassembly and indoor set.

Background

At present, house ornamentation allies oneself with unit that tuber pipe machine has the new trend function very few, if the user has the demand of new trend, then need additionally to install one set of new trend system on tuber pipe machine, and current new trend system adopts additionally to install the new trend wind channel that the return air wind channel set up side by side on tuber pipe machine, and make new trend wind channel and return air wind channel switch the intercommunication through plate-shaped valve body, make tuber pipe machine's structure complexity increase, still can cause tuber pipe machine's occupation space to increase and influence user's use comfort.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems that a wind pipe machine in the prior art is additionally provided with a fresh air system, the structure is complex, and the occupied space is large, the wind valve assembly and the indoor unit are provided, wherein the occupied space is reduced by switching the end part of the fixed pipe body and two air inlets on the side wall of the fixed pipe body through a rotating piece.

A damper assembly comprising:

the air conditioner comprises a fixed pipe body, a first air inlet is formed in the first end of the fixed pipe body, an air outlet is formed in the second end of the fixed pipe body, and a second air inlet is formed in the side wall of the fixed pipe body;

the rotating piece is rotatably arranged in the fixed pipe body and provided with a first air inlet, a second air inlet and a rotating piece, wherein the first air inlet is communicated with the air outlet and is right opposite to the second air inlet in a closed first state, and the second air inlet is communicated with the air outlet and is right opposite to the first air inlet in a closed second state.

The fixed pipe body is of a cylindrical structure, and the rotating piece can rotate by taking the axis of the fixed pipe body as an axis.

The rotating piece is arranged inside the fixed pipe body and comprises a first sealing piece and a second sealing piece which are connected with each other;

when the rotating piece is in the first state, the first air inlet is opened by the first sealing piece, and the second air inlet is hermetically arranged by the second sealing piece;

when the rotating piece is in the second state, the second air inlet is opened by the second sealing piece, and the first sealing piece is arranged at the first air inlet in a sealing mode.

The first sealing piece is parallel to the end face of the first end, and the second sealing piece is matched with the side wall of the fixed pipe body.

The first air inlet comprises a plurality of fan-shaped air openings, the fan-shaped air openings are uniformly distributed on the end face of the first end, and the first sealing pieces correspond to the fan-shaped air openings one to one.

A first avoidance area is arranged between every two adjacent fan-shaped air openings, and when the rotating piece is in the first state, the first sealing piece is located in the corresponding first avoidance area.

The radius of the fan-shaped air opening is equal to the radius of the end face of the first end.

The circle centers of the vertexes of all the fan-shaped air openings are in the same point with the circle center of the end face of the first end.

The first avoidance area is fan-shaped, and the center of the fan-shaped circle is in the same point with the center of the end face of the first end.

The shape of the fan-shaped air opening, the shape of the fan-shaped air opening and the shape of the first sealing element are the same, and when the rotating piece is in the second state, the first sealing element is overlapped with the first avoiding area.

The second air inlet comprises a plurality of strip-shaped air ports, the strip-shaped air ports are uniformly distributed on the side wall of the fixed pipe body, and the second sealing pieces correspond to the strip-shaped air ports one to one.

And a second avoidance area is arranged between every two adjacent strip-shaped air openings, and when the rotating piece is in the second state, the second sealing piece is positioned in the corresponding second avoidance area.

The length direction of the strip-shaped air opening is parallel to the axis of the fixed pipe body.

The length of the strip-shaped air opening is equal to that of the fixed pipe body.

The section of the strip-shaped air port is arc-shaped, and the circle center of the arc-shaped air port is positioned on the axis of the fixed pipe body.

The shape of the second avoidance area, the shape of the strip-shaped air opening and the shape of the second sealing piece are the same, and when the rotating piece is in the first state, the second sealing piece is overlapped with the second avoidance area.

The first sealing element is fan-shaped, the cross section of the second sealing element is arc-shaped, the vertex of the fan-shaped and the circle center corresponding to the cross section of the second sealing element are positioned on the axis of the fixed pipe body, and the central angle corresponding to the cross section of the first sealing element is equal to the central angle corresponding to the second sealing element.

The blast gate subassembly still includes:

the driving mechanism is arranged on the fixed pipe body and drives the rotating piece to be switched between the first state and the second state.

The driving mechanism comprises a driving tooth and a rack, the driving tooth is fixedly arranged on the fixed pipe body, the rack is arranged on the rotating piece, and the driving tooth is in meshing transmission with the rack.

The first sealing element is fan-shaped, the cross-section of the second sealing element is arc-shaped, the shape of the rack is arc-shaped, the top point of the fan-shaped, the circle center corresponding to the cross-section of the second sealing element and the circle center corresponding to the arc-shaped of the rack are both located on the axis of the fixed pipe body, the central angle corresponding to the first sealing element is equal to the central angle corresponding to the cross-section of the second sealing element, and the central angle corresponding to the rack is greater than or equal to the central angle of the first sealing element.

And a filtering mechanism is arranged at the first air inlet.

First end department is provided with the mounting groove, filtering mechanism detachable set up in the mounting groove.

The air valve assembly further comprises an interface piece, the interface piece is arranged at the first end, and the interface piece and the first end jointly enclose the mounting groove.

The blast gate subassembly still includes purification mechanism, purification mechanism set up in the inside of fixed body.

The purification mechanism is arranged on the surface of the rotating part far away from the fixed pipe body.

An indoor unit comprises the air valve assembly.

The indoor unit is provided with a fresh air inlet and a return air inlet, the fresh air inlet is communicated with the first air inlet, and the return air inlet is communicated with the second air inlet.

The first end is provided with an installation groove, the filter mechanism is detachably arranged in the installation groove, and the filter mechanism enters or leaves the installation groove through the air return opening.

The indoor unit comprises a fan, an air inlet of the fan is communicated with the air return inlet, and a sealing shock absorption piece is arranged between the fan and the air valve assembly.

The material of the sealing shock absorber comprises sponge.

The utility model provides an air valve component and indoor set sets up the air intake respectively at the tip and the lateral wall of fixed body to utilize the setting to switch over the operating condition of two air intakes at the inside rotating member of fixed body, make the whole volume restriction of air valve component inside the size of fixed body, the effectual occupation space that reduces air valve component, first sealing member with the central angle that the second sealing member corresponds the same can make actuating mechanism directly drive the rotating member and rotate the angle of settlement after, can make first sealing member and first dodge regional overlapping and second sealing member and second dodge regional overlapping, and then guarantee that the size of the air intake that corresponds reaches the biggest and guarantee that air valve component's gas flow reaches the biggest, set up filter mechanism in first air intake department and can realize filtering the new trend that first air intake introduces, set up purification mechanism and can all advance fresh air and return air that fresh air got into fixed body inside in addition at fixed body Purifying to ensure the air outlet cleanliness of the indoor unit.

Drawings

Fig. 1 is a schematic structural view of an air valve assembly according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of the air valve assembly according to the embodiment of the present invention;

fig. 3 is a schematic structural view illustrating a split structure of a filter mechanism of an air valve assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the air valve assembly and the rotating member of the air valve assembly according to the embodiment of the present invention in the second state;

fig. 5 is a schematic structural view of the air valve assembly and the indoor unit according to the embodiment of the present invention, in which the rotating member of the air valve assembly is in the first state;

fig. 6 is a schematic structural view of a fixing pipe body of an embodiment of the air valve assembly and the indoor unit provided by the present invention;

fig. 7 is a schematic structural view of a rotary member of an embodiment of an air valve assembly and an indoor unit provided by the present invention;

fig. 8 is a schematic structural view of a side outlet of an indoor unit according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a lower outlet air of an indoor unit according to an embodiment of the present invention;

in the figure:

1. fixing the pipe body; 11. a first air inlet; 12. an air outlet; 13. a second air inlet; 2. a rotating member; 21. a first seal member; 22. a second seal member; 3. a fan-shaped air port; 4. a first avoidance region; 5. a strip tuyere; 6. a second avoidance region; 7. a drive mechanism; 71. a drive tooth; 72. a rack; 8. a filtering mechanism; 9. a fan.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The air valve assembly as shown in fig. 1 to 9 includes: the air inlet structure comprises a fixed pipe body 1, wherein a first air inlet 11 is formed in a first end of the fixed pipe body 1, an air outlet 12 is formed in a second end of the fixed pipe body 1, and a second air inlet 13 is formed in the side wall of the fixed pipe body 1, so that air can be fed into the fixed pipe body 1 from the first end and the two directions corresponding to the side wall, and the problem that the structure size is increased due to the fact that a fresh air channel and a return air channel are arranged in parallel in the prior art is solved; the rotating piece 2 is rotatably arranged in the fixed pipe body 1, the rotating piece 2 is provided with a first air inlet 11 and an air outlet 12 which are communicated with each other and are in a closed first state, and a second air inlet 13 and an air outlet 12 which are communicated with each other and are in a closed second state, the rotating piece 2 is arranged in the fixed pipe body 1, the structural size of the air valve assembly can be limited to the size of the fixed pipe body 1, the defect that a plate-shaped swinging piece in the prior art switches a fresh air channel and a return air channel and needs a large installation size and an avoidance size is overcome, and the size of the air valve assembly is effectively reduced, and even the size of a structure using the air valve assembly is overcome.

Fixed body 1 is cylindrical structure, swivel member 2 set up in inside fixed body 1, just swivel member 2 can with the axis of fixed body 1 rotates as the axis to make the home range of swivel member 2 inject in the inside of fixed body 1, the effectual structure size who reduces the blast gate subassembly.

The rotating member 2 is arranged inside the fixed pipe body 1, and the rotating member 2 comprises a first sealing member 21 and a second sealing member 22 which are connected with each other; when the rotating member 2 is in the first state, the first sealing member 21 opens the first air inlet 11 and the second sealing member 22 is sealingly disposed at the second air inlet 13; when the rotating member 2 is in the second state, the second sealing member 22 opens the second air inlet 13, and the first sealing member 21 is disposed at the first air inlet 11 in a sealing manner, so that the first sealing member 21 is utilized to control the working state of the first air inlet 11, the second sealing member 22 is utilized to control the working state of the second air inlet 13, and the first sealing member 21 and the second sealing member 22 can rotate simultaneously, thereby realizing the linkage switching between the working state of the first air inlet 11 and the working state of the second air inlet 13.

Preferably, the rotating member 2 is L-shaped, a bottom section (a first sealing member 21) of the L-shape is located at an end surface of the first end, a vertical section (a second sealing member 22) of the L-shape is located on a side wall of the fixed pipe body 1, a projection of the first air inlet 11 at the end surface of the first end and a projection of the second air inlet 13 at the end surface of the first end do not overlap or even have a distance, so that when the L-shape is in sealing fit with the first air inlet 11, a portion of the L-shape matching with the second air inlet 13 is not located at the second air inlet 13, so that the second air inlet 13 is in an open state, and similarly, when the L-shape is in sealing fit with the second air inlet 13, a portion of the L-shape matching with the first air inlet 11 is not located at the first air inlet 11, and the first air inlet 11 is in an open state.

The first sealing element 21 is parallel to the end face of the first end, the second sealing element 22 is matched with the side wall of the fixing pipe body 1, a positioning shaft is arranged on the first sealing element 21, a positioning hole is formed in the second sealing element 22, and the axis of the positioning shaft and the axis of the positioning hole are collinear with the axis of the fixing pipe body 1.

First air intake 11 includes a plurality of fan-shaped wind gap 3, all fan-shaped wind gap 3 evenly distributed in on the terminal surface of first end, just first sealing member 21 with fan-shaped wind gap 3 one-to-one, also divide into a plurality of fan-shaped wind gap 3 with first air intake 11 to make the tip of fixed body 1 can the even air inlet, the quantity of first sealing member 21 is a plurality of, thereby at the rotation in-process, the open and close state of fan-shaped wind gap 3 that corresponds can be adjusted to first sealing member 21, the effectual turned angle who reduces first sealing member 21 increases the switching speed of first air intake 11 open and close state.

A first avoidance area 4 is arranged between two adjacent fan-shaped air ports 3, and when the rotating member 2 is in the first state, the first sealing member 21 is located in the corresponding first avoidance area 4, so that the first sealing member 21 is prevented from shielding the first air inlet 11 and affecting the air intake of the first air inlet 11.

The radius of the fan-shaped air ports 3 is equal to the radius of the end face of the first end, or the center of the top point of all the fan-shaped air ports 3 is the same as the center of the end face of the first end, that is, the end face of the first end is divided according to a certain central angle, so that a plurality of fan-shaped air ports 3 are formed.

The first avoidance area 4 is fan-shaped, the center of the fan-shaped circle is in the same point with the center of the end face of the first end, namely the end face of the first end is divided according to a certain central angle, and the structures corresponding to two adjacent central angles are an avoidance area and a fan-shaped air opening 3.

The shape of the fan, the shape of the fan-shaped air opening 3 and the shape of the first sealing member 21 are all the same, and when the rotating member 2 is in the second state, the first sealing member 21 overlaps the first avoidance region 4, so that when the first sealing member 21 rotates to the first avoidance region 4, the first sealing member 21 does not shield the fan-shaped air opening 3, and meanwhile, the flow area of the first air inlet 11 is increased to the maximum extent.

The second air inlet 13 comprises a plurality of strip-shaped air ports 5, all the strip-shaped air ports 5 are uniformly distributed on the side wall of the fixed pipe body 1, the second sealing elements 22 are in one-to-one correspondence with the strip-shaped air ports 5, so that the side wall of the fixed pipe body 1 can realize multi-directional air inlet, the air inlet efficiency of the side wall of the fixed pipe body 1 is ensured, meanwhile, the quantity of the second sealing elements 22 is multiple, the second sealing elements 22 can adjust the opening and closing states of the corresponding strip-shaped air ports 5, the rotating angle of the second sealing elements 22 is effectively reduced, and the switching speed of the opening and closing states of the second air inlet.

A second avoidance area 6 is arranged between every two adjacent strip-shaped air openings 5, and when the rotating piece 2 is in the second state, the second sealing piece 22 is located in the corresponding second avoidance area 6, so that the influence of the shielding of the strip-shaped air openings 5 by the second sealing piece 22 on the air inlet efficiency of the second air inlets 13 is avoided.

The length direction of the strip-shaped air port 5 is parallel to the axis of the fixed tube body 1, namely, the strip-shaped air port 5 is arranged on the side wall of the fixed tube body 1 along the length direction of the fixed tube body 1, so that the air inlet amount of the side wall of the fixed tube body 1 is increased to the maximum extent.

The length of the strip-shaped air port 5 is equal to that of the fixed pipe body 1, and the flow area of the second air inlet 13 is further increased.

Because the fixed pipe body 1 is of a cylindrical structure, the strip-shaped air ports 5 are formed in the side wall of the cylindrical structure, the cross sections of the strip-shaped air ports 5 are arc-shaped, and the circle centers of the arc-shaped air ports are located on the axis of the fixed pipe body 1, so that the flowing area of each strip-shaped air port 5 reaches the optimal value, and the flowing area of the second air inlet 13 is ensured to be the maximum.

The shape of the second avoiding region 6, the shape of the strip-shaped air opening 5 and the shape of the second sealing element 22 are the same, and when the rotating element 2 is in the first state, the second sealing element 22 is overlapped with the second avoiding region 6, so that the second sealing element 22 is prevented from shielding the corresponding strip-shaped air opening 5, and meanwhile, the flow area of the second air inlet 13 is increased to the maximum extent.

The first sealing element 21 is fan-shaped, the cross section of the second sealing element 22 is arc-shaped, the vertex of the fan-shaped and the circle center corresponding to the cross section of the second sealing element 22 are located on the axis of the fixed pipe body 1, and the central angle corresponding to the cross section of the first sealing element 21 is equal to the central angle corresponding to the second sealing element 22, so that when the rotating element 2 is switched between the first state and the second state, the state switching of the first air inlet 11 and the second air inlet 13 can be realized only by rotating the central angle corresponding to the cross section of the first sealing element 21.

The blast gate subassembly still includes:

the driving mechanism 7 is arranged on the fixed pipe body 1, the driving mechanism 7 drives the rotating piece 2 to switch between the first state and the second state, and the driving mechanism 7 drives the rotating piece 2 to rotate by taking the axis of the fixed pipe body 1 as the axis.

The driving mechanism 7 comprises a driving tooth 71 and a rack 72, the driving tooth 71 is fixedly arranged on the fixed pipe body 1, the rack 72 is arranged on the rotating part 2, the driving tooth 71 and the rack 72 are in meshing transmission, particularly, the driving tooth 71 is driven by a motor, when the motor rotates forwards, the driving tooth 71 is matched with the rack 72 to drive the rotating part 2 to rotate towards a first direction, and when the motor rotates backwards, the driving tooth 71 is matched with the rack 72 to drive the rotating part to rotate towards a second direction.

The first sealing element 21 is fan-shaped, the cross section of the second sealing element 22 is arc-shaped, the rack 72 is arc-shaped, the vertex of the fan-shaped, the circle center corresponding to the cross section of the second sealing element 22 and the circle center corresponding to the arc-shaped of the rack 72 are all located on the axis of the fixed pipe body 1, the central angle corresponding to the first sealing element 21 is equal to the central angle corresponding to the cross section of the second sealing element 22, the central angle corresponding to the rack 72 is greater than or equal to the central angle of the first sealing element 21, that is, the length of the rack 72 is greater than the rotation distance of the rotating element 2, so that the rotating element 2 can reliably rotate.

And a filtering mechanism 8 is arranged at the first air inlet 11 and is used for filtering the air flowing in from the first air inlet 11.

First end department is provided with the mounting groove, filtering mechanism 8 detachable set up in the mounting groove.

The air valve assembly further comprises an interface piece, the interface piece is arranged at the first end, the interface piece and the first end jointly enclose the installation groove, meanwhile, the air valve assembly is communicated with a corresponding gas pipeline through the interface piece, and therefore it is guaranteed that all air flow entering through the interface piece must flow into the first air inlet 11 after passing through the filtering mechanism 8.

The air valve assembly further comprises a purification mechanism, wherein the purification mechanism is arranged inside the fixed pipe body 1 and is used for purifying the gas entering the fixed pipe body 1, and the cleanliness of the gas is improved.

The purification mechanism is arranged on the surface of the rotating part 2 far away from the fixed pipe body 1, so that the purification mechanism is prevented from blocking the rotating part 2 to influence the sizes of the first air inlet 11 and the second air inlet 13.

An indoor unit comprises the air valve assembly.

The indoor unit is provided with a fresh air inlet and a return air inlet, the fresh air inlet is communicated with the first air inlet 11, the return air inlet is communicated with the second air inlet 13, the indoor unit particularly comprises a shell, the fresh air inlet and the return air inlet are both arranged on the shell, the fresh air inlet is communicated with the outside through a pipeline, and the return air inlet is communicated with the inside.

Specifically, the air valve assembly is fixedly arranged on the inner surface of the housing, the first air inlet 11 directly penetrates through the housing to form a fresh air inlet, and the interface is located outside the housing.

And the interface piece is provided with an anti-falling rib fixedly matched with the fresh air pipeline.

First end department is provided with the mounting groove, detachable is provided with in the mounting groove filtering mechanism 8, just filtering mechanism 8 passes through the return air inlet gets into or deviates from the mounting groove, also can directly carry out the dismouting to filtering mechanism 8 from return air inlet department, increases filtering mechanism 8's dismouting convenience, when the return air inlet is in the downside of indoor set, the dismouting that slides from top to bottom of filtering mechanism 8, when the return air inlet is in the rear side of indoor set, 8 horizontal slip dismouting of filtering mechanism, it is special, be provided with in the mounting groove right filtering mechanism 8 carries out the joint structure of joint.

The indoor unit comprises a fan 9, an air inlet of the fan 9 is communicated with the air return inlet, a sealing shock absorption piece is arranged between the fan 9 and the air valve assembly, and noise caused by contact between the air valve assembly and the fan 9 is avoided.

The material of the sealing shock absorber comprises sponge.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An air valve assembly, characterized by: the method comprises the following steps:

the air conditioner comprises a fixed pipe body (1), wherein a first air inlet (11) is formed in a first end of the fixed pipe body (1), an air outlet (12) is formed in a second end of the fixed pipe body (1), and a second air inlet (13) is formed in the side wall of the fixed pipe body (1);

the rotating piece (2) is rotatably arranged in the fixed pipe body (1), and the rotating piece (2) is provided with a first state that the first air inlet (11) and the air outlet (12) are communicated and the second air inlet (13) is closed and a second state that the second air inlet (13) and the air outlet (12) are communicated and the first air inlet (11) is closed.

2. The damper assembly of claim 1, wherein: the fixed pipe body (1) is of a cylindrical structure, and the rotating piece (2) can rotate by taking the axis of the fixed pipe body (1) as an axis.

3. The damper assembly of claim 2, wherein: the rotating part (2) is arranged inside the fixed pipe body (1), and the rotating part (2) comprises a first sealing part (21) and a second sealing part (22) which are connected with each other;

when the rotating member (2) is in the first state, the first sealing member (21) opens the first air inlet (11) and the second sealing member (22) is sealingly arranged at the second air inlet (13);

when the rotating member (2) is in the second state, the second sealing member (22) opens the second air inlet (13) and the first sealing member (21) is sealingly disposed at the first air inlet (11).

4. The damper assembly of claim 3, wherein: the first air inlet (11) comprises a plurality of fan-shaped air ports (3), all the fan-shaped air ports (3) are uniformly distributed on the end face of the first end, and the first sealing pieces (21) correspond to the fan-shaped air ports (3) one to one.

5. The damper assembly of claim 4, wherein: a first avoidance area (4) is arranged between every two adjacent fan-shaped air openings (3), and when the rotating piece (2) is in the first state, the first sealing piece (21) is located in the corresponding first avoidance area (4).

6. The damper assembly of claim 5, wherein: the circle centers of the vertexes of the fan-shaped air openings (3) are in the same point with the circle center of the end face of the first end.

7. The damper assembly of claim 6, wherein: the first avoidance area (4) is fan-shaped, and the center of the fan-shaped circle is in the same point with the center of the end face of the first end.

8. The damper assembly of claim 7, wherein: the shape of the sector, the shape of the sector tuyere (3) and the shape of the first seal (21) are all the same, and when the rotary member (2) is in the second state, the first seal (21) overlaps the first escape area (4).

9. The damper assembly of claim 3, wherein: the second air inlet (13) comprises a plurality of strip-shaped air ports (5), all the strip-shaped air ports (5) are uniformly distributed on the side wall of the fixed pipe body (1), and the second sealing pieces (22) correspond to the strip-shaped air ports (5) one to one.

10. The damper assembly of claim 9, wherein: and a second avoidance area (6) is arranged between every two adjacent strip-shaped air openings (5), and when the rotating piece (2) is in the second state, the second sealing piece (22) is positioned in the corresponding second avoidance area (6).

11. The damper assembly of claim 9, wherein: the length direction of the strip-shaped air opening (5) is parallel to the axis of the fixed tube body (1).

12. The damper assembly of claim 9, wherein: the length of the strip-shaped air opening (5) is equal to that of the fixed tube body (1).

13. The damper assembly of claim 10, wherein: the section of the strip-shaped air port (5) is arc-shaped, and the circle center of the arc-shaped air port is positioned on the axis of the fixed pipe body (1).

14. The damper assembly of claim 13, wherein: the shape of the second avoidance area (6), the shape of the strip-shaped tuyere (5) and the shape of the second sealing element (22) are all the same, and when the rotating member (2) is in the first state, the second sealing element (22) overlaps with the second avoidance area (6).

15. The damper assembly of claim 3, wherein: the first sealing element (21) is fan-shaped, the cross section of the second sealing element (22) is arc-shaped, the vertex of the fan-shaped and the circle center corresponding to the cross section of the second sealing element (22) are positioned on the axis of the fixed pipe body (1), and the central angle corresponding to the cross section of the first sealing element (21) is equal to the central angle corresponding to the second sealing element (22).

16. The damper assembly of claim 3, wherein: the blast gate subassembly still includes:

the driving mechanism (7) is arranged on the fixed pipe body (1), and the driving mechanism (7) drives the rotating piece (2) to be switched between the first state and the second state.

17. The damper assembly of claim 16, wherein: the driving mechanism (7) comprises a driving tooth (71) and a rack (72), the driving tooth (71) is fixedly arranged on the fixed pipe body (1), the rack (72) is arranged on the rotating piece (2), and the driving tooth (71) and the rack (72) are in meshing transmission.

18. The damper assembly of claim 17, wherein: the first sealing element (21) is fan-shaped, the cross section of the second sealing element (22) is arc-shaped, the shape of the rack (72) is arc-shaped, the top point of the fan-shaped, the circle center corresponding to the cross section of the second sealing element (22) and the circle center corresponding to the arc-shaped of the rack (72) are all located on the axis of the fixed pipe body (1), the central angle corresponding to the first sealing element (21) is equal to the central angle corresponding to the cross section of the second sealing element (22), and the central angle corresponding to the rack (72) is greater than or equal to the central angle of the first sealing element (21).

19. The damper assembly of claim 1, wherein: and a filtering mechanism (8) is arranged at the first air inlet (11).

20. The damper assembly of claim 19, wherein: the first end is provided with a mounting groove, and the filtering mechanism (8) is detachably arranged in the mounting groove.

21. The damper assembly of claim 20, wherein: the air valve assembly further comprises an interface piece, the interface piece is arranged at the first end, and the interface piece and the first end jointly enclose the mounting groove.

22. The damper assembly of claim 2, wherein: the air valve component further comprises a purification mechanism, and the purification mechanism is arranged inside the fixed pipe body (1).

23. The damper assembly of claim 22, wherein: the purification mechanism is arranged on the surface of the rotating part (2) far away from the fixed pipe body (1).

24. An indoor unit, characterized in that: comprising the damper assembly of any one of claims 1 to 23.

25. The indoor unit according to claim 24, wherein: the indoor unit is provided with a fresh air inlet and a return air inlet, the fresh air inlet is communicated with the first air inlet (11), and the return air inlet is communicated with the second air inlet (13).

26. The indoor unit according to claim 25, wherein: the air filter is characterized in that a mounting groove is formed in the first end, a filtering mechanism (8) is detachably arranged in the mounting groove, and the filtering mechanism (8) enters or leaves the mounting groove through the air return opening.

27. The indoor unit according to claim 25, wherein: the indoor unit comprises a fan (9), an air inlet of the fan (9) is communicated with the air return inlet, and a sealing shock absorption piece is arranged between the fan (9) and the air valve assembly.

28. The indoor unit according to claim 27, wherein: the material of the sealing shock absorber comprises sponge.