CN213514126U - Machine and air conditioner in new trend device, air conditioning - Google Patents

Abstract

The utility model discloses a new trend device, air conditioning indoor unit and air conditioner, wherein, this new trend device includes casing and valve member, the casing includes the spiral case and locates the nozzle on the spiral case, the spiral case has the new trend cavity, the nozzle includes the chamber of crossing wind that communicates with the new trend cavity and connects the joint pipe in the chamber of crossing wind, the joint pipe has the passageway of crossing wind; the valve assembly is arranged in the air passing cavity; the valve assembly is used for separating the air passing channel from the fresh air cavity and communicating the air passing channel with the fresh air cavity. The utility model discloses technical scheme has reduced the windage in the new trend pipe.

Description

Machine and air conditioner in new trend device, air conditioning

Technical Field

The utility model relates to a new trend technical field, in particular to machine and air conditioner in new trend device, air conditioning.

Background

Among the correlation technique, for preventing that the new trend from flowing backward and influencing user experience, set up the rotation valve usually, open the valve when new trend device during operation, close the valve when shutting down. However, the rotary valve is generally arranged in the fresh air pipe, and when the fresh air device works, the rotary valve generates large air resistance to fresh air, so that the air passing amount of the fresh air pipe is reduced, and the product performance is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a machine and air conditioner in new trend device, air conditioning aims at reducing the windage in the new trend pipe.

In order to achieve the above object, the fresh air device provided by the present invention comprises a housing and a valve assembly, wherein the housing comprises a volute and a pipe seat arranged on the volute, the volute has a fresh air chamber, the pipe seat comprises an air passing chamber communicated with the fresh air chamber and a joint pipe connected with the air passing chamber, and the joint pipe has an air passing channel; the valve assembly is arranged in the air passing cavity; the valve assembly is used for separating the air passing channel from the fresh air cavity and communicating the air passing channel with the fresh air cavity.

In one embodiment, the valve assembly includes a damper rotatably mounted within the air passing chamber.

In an embodiment, the fresh air device further includes a driving device installed on the housing, and the driving device is used for driving the damper to rotate.

In one embodiment, the damper includes a first sub-damper and a second sub-damper connected to the first sub-damper, the first sub-damper and the second sub-damper being coaxial.

In an embodiment, the driving device comprises a first motor and a torsion spring, the first sub-air door, the second sub-air door and the torsion spring are coaxial, the first motor is connected with one of the first sub-air door and the second sub-air door, one end of the torsion spring is connected with the first sub-air door, and the other end of the torsion spring is connected with the second sub-air door.

In an embodiment, a limiting column is disposed in the air passing cavity in a direction toward the air passing channel, and the limiting column is used for stopping the first sub-damper or the second sub-damper.

In an embodiment, a first blocking platform and a second blocking platform are arranged in the air passing cavity, the first blocking platform is close to the fresh air cavity relative to the second blocking platform, when the valve assembly blocks the air passing channel from being blocked by the fresh air cavity, the second blocking platform is used for blocking the second sub air door, and the first blocking platform is used for blocking the first sub air door.

In an embodiment, the driving device includes a first motor and a second motor, and the first motor and the second motor are respectively connected to the first sub-damper and the second sub-damper.

The utility model also provides an air-conditioning indoor unit, which comprises a casing and a fresh air device, wherein the fresh air device is arranged on the casing; the fresh air device comprises a shell and a valve assembly, the shell comprises a volute and a pipe seat arranged on the volute, the volute is provided with a fresh air cavity, the pipe seat comprises an air passing cavity communicated with the fresh air cavity and a joint pipe connected with the air passing cavity, and the joint pipe is provided with an air passing channel; the valve assembly is arranged in the air passing cavity; the valve assembly is used for separating the air passing channel from the fresh air cavity and communicating the air passing channel with the fresh air cavity.

The utility model also provides an air conditioner, the air conditioner comprises an air conditioner outdoor unit and an air conditioner indoor unit, the air conditioner indoor unit comprises a casing and a fresh air device, and the fresh air device is arranged on the casing; the fresh air device comprises a shell and a valve assembly, the shell comprises a volute and a pipe seat arranged on the volute, the volute is provided with a fresh air cavity, the pipe seat comprises an air passing cavity communicated with the fresh air cavity and a joint pipe connected with the air passing cavity, and the joint pipe is provided with an air passing channel; the valve assembly is arranged in the air passing cavity; the valve assembly is used for separating the air passing channel from the fresh air cavity and communicating the air passing channel with the fresh air cavity.

The utility model discloses technical scheme's the cross wind area in cross wind chamber is greater than the cross wind area of the passageway of connecting pipe head, through installing the valve member in the cross wind intracavity to reduce the windage in the new trend pipe, increased the amount of wind of crossing of new trend pipe. Meanwhile, when the fresh air passes through the valve assembly in the air passing cavity, because the air passing area of the air passing cavity is larger than that of the air passing channel, the fresh air flow has a larger flowing space relative to the fresh air pipe and the air passing channel, so that the air resistance and noise of the valve assembly to the air flow are reduced, the fresh air passing amount is increased, and the user experience is improved. When fresh air is required to be introduced from the outdoor, the valve assembly is opened, the air passing channel is communicated with the fresh air cavity, so that the fresh air flows into the fresh air cavity of the volute from the fresh air pipe through the air passing channel and the air passing cavity, and the fresh air is conveyed to the indoor environment; when fresh air is not required to be introduced from the outdoor, the valve assembly blocks the air passing channel and the fresh air cavity, and the fresh air is prevented from flowing backwards.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of a fresh air device of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of a fresh air device (with an air door closed) according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is another perspective view of the fresh air device (damper closed) of FIG. 2;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

fig. 6 is a schematic structural diagram of an embodiment of the fresh air device (with the air door open) according to the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is another perspective view of the fresh air device (damper open) of FIG. 6;

FIG. 9 is an enlarged view of a portion of FIG. 8 at D;

FIG. 10 is a further perspective view of the fresh air device (damper open) of FIG. 6;

fig. 11 is a schematic structural diagram of an embodiment of the damper and the torsion spring according to the present invention;

FIG. 12 is an exploded view of the damper and torsion spring of FIG. 11;

fig. 13 is a schematic structural view of another embodiment of the fresh air device of the present invention;

FIG. 14 is a schematic view of an embodiment of the fresh air device (damper open) of FIG. 13;

FIG. 15 is a schematic structural view of one embodiment of the drive motor and valve assembly of FIG. 14;

FIG. 16 is another view of the drive motor and valve assembly of FIG. 15;

fig. 17 is an exploded view of the drive motor and valve assembly of fig. 16.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Fresh air device	140	Filter screen assembly
100	Shell body	200	Valve assembly
				110	Spiral casing	210	Air door
110a	Fresh air cavity	211	First sub-air door
				120	Connecting pipe seat	211a	Connecting column
121	Air-passing cavity	212	Second oneSub-air door
				122	Joint pipe	212a	Column sleeve
122a	Air passing channel	300	Drive device
				123	Limiting column	310	First motor
124	First stop table	320	Torsion spring
				125	Second stop	330	Second electric machine
130	Fan assembly

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a new trend device, contain this new trend device's machine in air conditioning and contain the air conditioner of this machine in air conditioning.

In the embodiment of the present invention, referring to fig. 1 to 2, the fresh air device 10 includes a housing 100 and a valve assembly 200, the housing 100 includes a spiral casing 110 and a socket 120 disposed on the spiral casing 110, the spiral casing 110 has a fresh air chamber 110a, the socket 120 includes an air passing chamber 121 communicated with the fresh air chamber 110a and a joint pipe 122 connected to the air passing chamber 121, the joint pipe 122 has an air passing channel 122 a; the valve assembly 200 is installed in the air passing chamber 121. Referring to fig. 2 and 6, the air passing area of the air passing cavity 121 is larger than the air passing area of the air passing channel 122a, and the valve assembly 200 is used for blocking the air passing channel 122a and the fresh air chamber 110a and communicating the air passing channel 122a and the fresh air chamber 110 a.

Specifically, referring to fig. 1 to 2, the housing 100 includes a volute 110, the volute 110 has a fresh air chamber 110a, and the housing 100 can be installed with a fan assembly 130, when the fan assembly 130 works, more fresh air is driven into the fresh air chamber 110a, so as to increase the fresh air volume in the indoor environment, thereby further ensuring the oxygen content and freshness of the indoor air, and improving the user experience. Referring to fig. 2, in order to improve the cleanliness of the air taken by the fresh air device 10, a filter screen assembly 140 may be installed in the fresh air chamber 110a, and the air entering the fresh air chamber 110a is filtered and purified by the filter screen assembly 140 to become relatively clean fresh air, and then blown out from the fresh air chamber 110a to the room. It is understood that the fan assembly 130 may include a centrifugal fan and the filter screen assembly 140 may include a HEPA screen.

Referring to fig. 2 to 3, the casing 100 further includes a pipe socket 120, and the pipe socket 120 is disposed on the spiral casing 110 and is communicated with the fresh air chamber 110 a. This nozzle seat 120 is used for being connected with the new trend pipe to fixed the new trend pipe, outdoor new trend passes through in the new trend pipe gets into new trend cavity 110a, and then enters into indoor environment. It can be understood that the connection between the fresh air pipe and the nozzle 120 is various, and the fresh air pipe and the nozzle 120 may be clamped, screwed, or wound by an adhesive tape.

Referring to fig. 2 to 3, the nozzle holder 120 includes an air passing cavity 121 and a nozzle, the air passing cavity 121 is connected to the nozzle, the nozzle 122 has an air passing channel 122a, and the air passing cavity 121 is located between the air passing channel 122a and the fresh air chamber 110a and is respectively communicated with the air passing channel 122a and the fresh air chamber 110 a. Under the driving of the fan assembly 130, outdoor fresh air enters the fresh air channel through the fresh air pipe, passes through the air cavity 121 to reach the fresh air cavity 110a, and then flows into the indoor environment from the fresh air cavity 110 a.

Referring to fig. 1 to 2, a valve assembly 200 is installed in the housing 100, and the valve assembly 200 is used for blocking fresh air from entering the fresh air chamber 110a and communicating the fresh air chamber 110a with the outdoor environment so as to facilitate the entry of fresh air. The sectional area of this new trend passageway can be more than or equal to the sectional area of new trend pipe, and in order to reduce the windage of new trend to the new trend pipe, this valve assembly 200 can install in new trend passageway, also can install in the chamber 121 that crosses wind.

Referring to fig. 6 and 8, the air passing area of the air passing channel 122a is smaller than the air passing area of the air passing cavity 121, and the valve assembly 200 is installed in the air passing cavity 121, so that the wind resistance of fresh air in the fresh air duct and the air passing channel 122a is reduced. Because the cross-sectional area of the air passing cavity 121 is larger than that of the air passing channel 122a, the airflow has a larger flowing space, and when the airflow passes through the valve assembly 200 positioned in the air passing cavity 121, the airflow can rapidly flow away to the periphery of the valve assembly 200, so that the influence of the valve assembly 200 on the airflow is reduced, the wind resistance and the noise generated by the valve assembly 200 are reduced, the fresh air passing amount is increased, and the user experience is improved.

Referring to fig. 6, the valve assembly 200 is used to communicate the air passage 122a with the fresh air chamber 110a, so that fresh air can be introduced from the outdoor environment to the indoor environment. Referring to fig. 4, when the valve assembly 200 separates the air passage 122a from the fresh air chamber 110a, the air passage 122a is not communicated with the fresh air chamber 110a, so that the fresh air outside cannot enter the indoor environment, and the indoor air cannot flow out of the fresh air chamber 110 a.

It should be noted that, the casing 100 may be provided with an indoor air inlet and an indoor air outlet, the indoor air inlet and the indoor air outlet are respectively communicated with the fresh air chamber 110a, when outdoor fresh air is introduced, the indoor air inlet may be closed, and the fresh air flows out from the air outlet after entering the indoor chamber; when indoor air needs to be purified, the valve assembly 200 can block the air passing channel 122a and the fresh air chamber 110a, the indoor air enters the fresh air chamber 110a through an indoor air inlet, and the filter screen assembly 140 filters the indoor air and then flows out of an air outlet.

The utility model discloses technical scheme's the cross wind area of cross wind chamber 121 is greater than the cross wind area of the wind passageway 122a of nipple, through installing valve member 200 in cross wind chamber 121 to reduce the windage of fresh air pipe, increased the air volume of crossing of fresh air pipe. Meanwhile, referring to fig. 6 and 8, when the fresh air passes through the valve assembly 200 in the air passing cavity 121, because the air passing area of the air passing cavity 121 is larger than the air passing area of the air passing channel 122a, the fresh air flow has a larger flow space relative to the fresh air pipe and the air passing channel 122a, so that the air resistance and noise of the valve assembly 200 to the air flow are reduced, the fresh air passing amount is increased, and the user experience is improved. With continued reference to fig. 6 and 8, when fresh air needs to be introduced from the outdoor, the valve assembly 200 is opened to communicate the air passage 122a with the fresh air chamber 110a, so that the fresh air flows into the fresh air chamber 110a of the scroll casing 110 from the fresh air pipe through the air passage 122a and the air passage chamber 121, and the fresh air is delivered to the indoor environment; when fresh air is not required to be introduced from the outdoor, the valve assembly 200 obstructs the air passing channel 122a and the fresh air chamber 110a, so that the fresh air is prevented from flowing backwards.

Specifically, referring to fig. 2 to 3, in one embodiment, the valve assembly 200 includes a damper 210, and the damper 210 is rotatably installed in the air passing chamber 121. The damper 210 has an open state that communicates the overfire air passage 122a with the fresh air chamber 110a, and a closed state that blocks the overfire air passage 122a from the fresh air chamber 110 a. The damper 210 rotates in the air passing cavity 121 and can be switched back and forth from an open state to a closed state to meet the actual requirements of users.

The open state and the closed state of the damper 210 may be switched manually or may be switched by the driving device 300. In order to prevent the air door 210 from involuntarily rotating in the air passing cavity 121 when new air is introduced, so as to increase the wind resistance and affect the entering amount of the new air, referring to fig. 1 to 2, in an embodiment, the new air device 10 further includes a driving device 300 installed in the housing 100, and the driving device 300 is configured to drive the air door 210 to rotate.

The driving device 300 is installed on the housing 100, and the driving device 300 is connected to the damper 210 and drives the damper 210 to rotate, thereby controlling the rotation of the damper 210 and facilitating the switching of the damper 210 between the open state and the closed state. It will be appreciated that the shape of the damper 210 may be varied and may be circular or may be regular or irregular, such as square. Because of the large unit area of the circle, referring to fig. 2, in one embodiment, the damper 210 is a circle.

The structure of the damper 210 is various, referring to fig. 2 to 3 and fig. 11, in an embodiment, the damper 210 includes a first sub-damper 211 and a second sub-damper 212 connected to the first sub-damper 211, and the first sub-damper 211 and the second sub-damper 212 are coaxial.

With continued reference to fig. 3 and 11, the first sub-damper 211 and the second sub-damper 212 are connected to form the damper 210, thereby blocking the air passing passage 122a and the fresh air chamber 110a, and connecting the air passing passage 122a and the fresh air chamber 110 a. As the damper 210 rotates, the first sub damper 211 and the second sub damper 212 rotate coaxially to rapidly open and close the damper 210. Referring to fig. 11 to 12, the first sub damper 211 and the second sub damper 212 may be connected in various manners, and a connection column 211a may be disposed on the first sub damper 211, a column sleeve 212a adapted to the connection column 211a is disposed on the second sub damper 212, and the column sleeve 212a is sleeved on the periphery of the connection column 211a to connect the first sub damper 211 and the second sub damper 212.

Referring to fig. 10 to 12, in an embodiment, the driving device 300 includes a first motor 310 and a torsion spring 320, the first sub-damper 211, the second sub-damper 212 and the torsion spring 320 are coaxial, the first motor 310 is connected to one of the first sub-damper 211 and the second sub-damper 212, one end of the torsion spring 320 is connected to the first sub-damper 211, and the other end of the torsion spring 320 is connected to the second sub-damper 212.

Referring to fig. 11 to 12, the torsion spring 320 is sleeved on the outer wall of the column sleeve 212a, two ends of the torsion spring 320 are respectively connected to the first sub-damper 211 and the second sub-damper 212, and when the first motor 310 is connected to drive the first sub-damper 211 to rotate, the second sub-damper 212 is driven to rotate synchronously, so as to communicate or block the air passing channel 122a and the fresh air chamber 110 a.

In order to keep the damper 210 in the open state, please refer to fig. 7 and 9, in an embodiment, a limiting post 123 is disposed in a direction of the air passing cavity 121 toward the air passing channel 122a, and the limiting post 123 is used to stop the first sub damper 211 or the second sub damper 212.

Referring to fig. 7 and 9, when the first motor 310 is connected to the first sub-damper 211 and rotates toward the air passage 122a, the second sub-damper 212 rotates toward the fresh air chamber 110a under the driving of the first sub-damper 211, the second sub-damper 212 touches the limiting post 123, and under the stopping action of the limiting post 123, the second sub-damper 212 stops rotating, the damper 210 is in an open state, so that the fresh air flows smoothly, and at this time, the first sub-damper 211 may stop rotating or may continue to rotate. Alternatively, the first sub-damper 211 rotates toward the fresh air chamber 110a, the second sub-damper 212 rotates toward the air passage 122a, and the stopper 123 stops the first sub-damper 211, so that the damper 210 stops rotating.

In order to make the valve assembly 200 better block the air passing channel 122a and the fresh air chamber 110a, please refer to fig. 4 to 5, in an embodiment, a first blocking stage 124 and a second blocking stage 125 are disposed in the air passing chamber 121, the first blocking stage 124 is close to the fresh air chamber 110a relative to the second blocking stage 125, when the valve assembly 200 blocks the air passing channel 122a from the fresh air chamber 110a, the second blocking stage 125 is used for blocking the second sub-damper 212, and the first blocking stage 124 is used for blocking the first sub-damper 211.

With continued reference to fig. 4 to 5, the first blocking stage 124 is close to the fresh air chamber 110a relative to the second blocking stage 125, i.e. the first blocking stage 124 is located further inside. When the air passing channel 122a and the fresh air chamber 110a need to be blocked, the first motor 310 is connected with the first sub-damper 211 and drives the whole damper 210, the second sub-damper 212 stops rotating after meeting the second baffle table 125, at this time, the first sub-damper 211 is away from the first baffle table 124 by a certain distance, the first sub-damper 211 is driven to continue rotating by the first motor 310, the first sub-damper 211 is lapped on the first baffle table 124, and the air passing channel 122a is blocked from the fresh air chamber 110 a.

It can be understood that the driving device 300 may include a gear and a rack, the gear is driven by the first motor 310 to rotate, the rack is respectively connected to the gear and the first sub-damper 211, when the damper 210 separates the air passing passage 122a from the fresh air chamber 110a, the first motor 310 is powered off, the gear does not rotate, and the damper 210 is locked, so as to prevent the damper 210 from rotating randomly, resulting in connecting the air passing passage 122a and the fresh air chamber 110a, and further preventing the fresh air from flowing backwards.

The driving device 300 may be one motor or two motors. Referring to fig. 13 to 15, in an embodiment, the driving device 300 includes a first motor 310 and a second motor 330, and the first motor 310 and the second motor 330 are respectively connected to the first sub-damper 211 and the second sub-damper 212.

Referring to fig. 15 to 17, the first motor 310 drives the first sub-damper 211 to rotate, and the second motor 330 drives the second sub-damper 212 to rotate, that is, the two motors drive the first sub-damper 211 and the second sub-damper 212 respectively, and the rotation angles of the first sub-damper 211 and the second sub-damper 212 are controlled and adjusted respectively by controlling the operations of the first motor 310 and the second motor 330. The user can adjust the rotation angle of the first sub-damper 211 and the second sub-damper 212 respectively according to the actual air passing amount requirement, and the performance of the fresh air device 10 is optimized.

It is understood that, when the first sub-damper 211 and the second sub-damper 212 are driven by separate motors to rotate, the first blocking stage 124 and the second blocking stage 125 may be located at the same horizontal plane or at different horizontal planes, which may be set according to actual situations.

The utility model also provides an indoor unit of air conditioner, this indoor unit of air conditioner include casing and new trend device 10, new trend device 10 install in the casing. The specific structure of the fresh air device 10 refers to the above embodiments, and since the indoor unit of the air conditioner adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The utility model discloses still provide an air conditioner, this air conditioner includes machine in air condensing units and the air conditioning. The specific structure of the air conditioner indoor unit refers to the above embodiments, and since the air conditioner adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (10)

1. A fresh air device, comprising:

the device comprises a shell, a fan and a fan, wherein the shell comprises a volute and a pipe seat arranged on the volute, the volute is provided with a fresh air cavity, the pipe seat comprises an air passing cavity communicated with the fresh air cavity and a joint pipe connected with the air passing cavity, and the joint pipe is provided with an air passing channel;

a valve assembly mounted within the air passing cavity;

the valve assembly is used for separating the air passing channel from the fresh air cavity and communicating the air passing channel with the fresh air cavity.

2. The fresh air device as claimed in claim 1, wherein the valve assembly comprises a damper rotatably mounted in the air passing chamber.

3. The fresh air device as claimed in claim 2, further comprising a driving device mounted to the housing, the driving device being configured to drive the damper to rotate.

4. The fresh air device as claimed in claim 3, wherein the damper comprises a first sub-damper and a second sub-damper connected to the first sub-damper, the first sub-damper and the second sub-damper being coaxial.

5. The fresh air device as claimed in claim 4, wherein the driving device comprises a first motor and a torsion spring, the first sub-damper, the second sub-damper and the torsion spring are coaxial, the first motor is connected with one of the first sub-damper and the second sub-damper, one end of the torsion spring is connected with the first sub-damper, and the other end of the torsion spring is connected with the second sub-damper.

6. The fresh air device as claimed in claim 5, wherein a limiting post is disposed on the air passing cavity in a direction toward the air passing channel, and the limiting post is used for stopping the first sub-damper or the second sub-damper.

7. The fresh air device as claimed in claim 5, wherein a first baffle and a second baffle are arranged in the air passing chamber, the first baffle is close to the fresh air chamber relative to the second baffle, when the valve assembly blocks the air passing channel from being blocked by the fresh air chamber, the second baffle is used for stopping the second sub-damper, and the first baffle is used for stopping the first sub-damper.

8. The fresh air device as claimed in claim 4, wherein the driving device comprises a first motor and a second motor, and the first motor and the second motor are respectively connected with the first sub-damper and the second sub-damper.

9. An indoor unit of an air conditioner, comprising a casing and the fresh air device as claimed in any one of claims 1 to 8, wherein the fresh air device is installed in the casing.

10. An air conditioner comprising an outdoor unit of the air conditioner and an indoor unit of the air conditioner as claimed in claim 9.

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