Fresh air device and air conditioner with fresh air device

Abstract

The invention provides a fresh air device and an air conditioner with the fresh air device, and belongs to the technical field of household appliances, the fresh air device comprises a shell and a centrifugal fan, a centrifugal air duct is arranged in the shell, the centrifugal air duct is provided with an air inlet and an air outlet, and the shell is provided with a first baffle, a second baffle and a first driving assembly; the first baffle and the second baffle are arranged at the air inlet, a plurality of first through holes are formed in the first baffle, a plurality of second through holes are formed in the second baffle, and the first driving assembly can drive at least one of the first baffle and the second baffle to move relative to the other. The air inlet amount of the air inlet is gradually increased through the first through hole and the second through hole from the completely-shielded state, the partially-overlapped state to the completely-overlapped state in sequence. According to the fresh air device, outdoor mosquitoes can be blocked through the first baffle and the second baffle, the air inlet amount of the air inlet can be adjusted through changes of the relative positions of the first baffle and the second baffle, so that noise generated when the fresh air device operates is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliances, and specifically relates to a fresh air device and an air conditioner having the fresh air device. Background Art

[0002] When using an air conditioner to cool or heat the indoor environment, it is necessary to close the doors and windows to create a closed environment indoors to ensure the air conditioner's heat exchange effect on the indoor environment. However, the indoor air quality will become worse and worse, and users will feel uncomfortable if they stay in a closed room for a long time.

[0003] Therefore, more and more air conditioners are equipped with fresh air devices, which are generally installed on the indoor unit of the air conditioner and are provided with a pipe connected to the outdoors. During the operation of the indoor unit of the air conditioner, the fresh air device can introduce outdoor fresh air into the indoor room and discharge the dirty air in the indoor room, which can not only ensure the heat exchange effect of the indoor unit of the air conditioner, but also improve the indoor air quality.

[0004] However, mosquitoes outdoors can easily enter the room through the air inlet duct of the fresh air device, and when the air intake volume of the fresh air device is large, it is also easy to generate noise, resulting in a poor user experience. Summary of the invention

[0005] The present application provides a fresh air device and an air conditioner having the fresh air device, so as to solve the problem that outdoor mosquitoes can easily enter indoors through the fresh air device and the fresh air device can easily generate noise when the air volume is large.

[0006] In the first aspect, the fresh air device provided by the present application includes a shell and a centrifugal fan, a centrifugal air duct is provided in the shell, the centrifugal air duct has an air inlet and an air outlet, and the centrifugal fan is rotatably arranged in the centrifugal air duct; a first baffle, a second baffle and a first drive assembly are provided on the shell, the first baffle and the second baffle are arranged at the air inlet in sequence from the outside to the inside, a plurality of first through holes are provided on the first baffle, and a plurality of second through holes are provided on the second baffle; at least one of the first baffle and the second baffle is connected to the first drive assembly, and the first drive assembly drives at least one of the first baffle and the second baffle to move relative to the other, so as to gradually increase the air intake of the air inlet through the first through holes and the second through holes in sequence from a fully blocked state, a partially overlapping state to a fully overlapping state.

[0007] Those skilled in the art can understand that, when the fresh air device is working, the centrifugal fan draws outdoor air into the centrifugal air duct through the air inlet, and then discharges it into the room through the air outlet, wherein the first baffle and the second baffle can block foreign objects such as mosquitoes outdoors, thereby preventing mosquitoes outdoors from entering the room through the fresh air device; at the same time, the first drive component can also drive the change in the relative position of the first baffle and the second baffle, and adjust the connecting area of ​​the first through hole and the second through hole to achieve the purpose of adjusting the air intake at the air inlet, and can appropriately adjust the air intake volume when the fresh air device generates noise, thereby reducing noise during operation and improving the user experience.

[0008] In some embodiments, the first baffle is rotatably embedded in the air inlet and connected to the first driving assembly.

[0009] In some embodiments, a second driving assembly is further provided on the housing, and the second baffle is movably connected to the housing and connected to the second driving assembly, and the second driving assembly can drive the second baffle to move to one side of the air inlet.

[0010] In some embodiments, a third baffle and a third drive assembly are further provided on the outer shell, and the third baffle is movably connected to the outer shell and connected to the third drive assembly, and the third drive assembly can drive the third baffle to close the air inlet.

[0011] In some embodiments, the second baffle and the third baffle are both located in the centrifugal air duct, and the third baffle is located on a side of the second baffle facing away from the first baffle.

[0012] In some embodiments, the inner wall of the shell is provided with a track, and the track is provided with a first slide groove and a second slide groove parallel to each other, the second baffle plate can be slidably embedded in the first slide groove, and the third baffle plate can be slidably embedded in the second slide groove.

[0013] In some embodiments, the first driving assembly includes: a gear ring, wherein the teeth are arranged around the circumference of the first baffle; a driving motor, wherein the driving motor is arranged on the housing, and a gear is provided on the output shaft of the driving motor, and the gear is meshed with the gear ring.

[0014] In some embodiments, the gear ring is a straight bevel gear ring, and the axis of the gear is perpendicular to the axis of the gear ring.

[0015] In some embodiments, a baffle ring is provided on the outer shell, the baffle ring is arranged around the circumference of the air inlet, the gear ring is rotatably embedded in the baffle ring, the drive motor is located on the outside of the baffle ring, and the baffle ring is provided with a notch to avoid the gear and part of the output shaft.

[0016] On the other hand, the air conditioner provided in the present application includes an air conditioner indoor unit and an air conditioner outdoor unit, and the air conditioner indoor unit is provided with the fresh air device described in any one of the above-mentioned embodiments.

[0017] Those skilled in the art can understand that the fresh air device can work alone or together with the indoor unit of the air conditioner. Through the operation of the fresh air device, outdoor air can be introduced into the room to improve the indoor air quality. In addition, the first baffle and the second baffle provided at the air inlet can prevent outdoor mosquitoes from entering the room. The relative positions of the first baffle and the second baffle can also be changed to change the connection area of ​​the first through hole and the second through hole to adjust the air intake at the air inlet, reduce the noise during the operation of the fresh air device, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 It is a structural schematic diagram of the fresh air device in the embodiment of the present application;

[0020] Figure 2 is a cross-sectional view of a fresh air device in an embodiment of the present application;

[0021] Figure 3 yes Figure 2 A magnified view of part A;

[0022] Figure 4 The position relationship between the first baffle and the second baffle in the embodiment of the present application is Figure 1 ;

[0023] Figure 5 The position relationship between the first baffle and the second baffle in the embodiment of the present application is Figure 2 ;

[0024] Figure 6 The position relationship between the first baffle and the second baffle in the embodiment of the present application is Figure 3 ;

[0025] Figure 7 This is a cross-section of the fresh air device in the embodiment of the present application. Figure 1 ;

[0026] Figure 8This is a cross-section of the fresh air device in the embodiment of the present application. Figure 2 ;

[0027] Fig. 9 It is a structural schematic diagram of the air-conditioning indoor unit in the embodiment of the present application.

[0028] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0029] Description of reference numerals:

[0030] 10- housing;

[0031] 11- Centrifugal air duct;

[0032] 12- Air inlet;

[0033] 13-Air outlet;

[0034] 20- centrifugal fan;

[0035] 30- first baffle;

[0036] 31-first through hole;

[0037] 40- second baffle;

[0038] 41- second through hole;

[0039] 50-a first driving assembly;

[0040] 51-gear ring;

[0041] 52-driving motor;

[0042] 53-Gear;

[0043] 60- third baffle;

[0044] 70-track;

[0045] 71-first chute;

[0046] 72-second chute;

[0047] 80- retaining ring;

[0048] 81-Gap;

[0049] 90-Internal components. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0052] In the embodiments of the present application, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have specific orientations, or to be constructed and operated in specific orientations. Moreover, in addition to being used to indicate orientations or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0054] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0055] In the prior art, the indoor unit of the air conditioner is equipped with a fresh air device, which is provided with a pipeline connected to the outside. During the operation of the indoor unit of the air conditioner, the fresh air device can be used to introduce fresh air from the outside into the room, so that the indoor unit of the air conditioner can be operated in a closed room and the indoor air can be replaced to ensure the indoor air quality. However, mosquitoes or mice outside can easily enter the fresh air device through the air inlet duct and enter the room through the air outlet of the fresh air device. In addition, when the air intake of the fresh air device is large, it will also generate a large noise, resulting in a poor user experience.

[0056] Based on this, an embodiment of the present application provides a fresh air device, and the embodiment of the present invention is described below in conjunction with the drawings.

[0057] Figure 1 It is a structural schematic diagram of the fresh air device in the embodiment of the present application; Figure 2 is a cross-sectional view of a fresh air device in an embodiment of the present application; Figure 3 yes Figure 2 Enlarged view of part A.

[0058] Combination Figure 1-Figure 3 As shown, the fresh air device includes a housing 10 and a centrifugal fan 20. A centrifugal air duct 11 is provided in the housing 10, and the centrifugal air duct 11 has an air inlet 12 and an air outlet 13. The centrifugal fan 20 is rotatably arranged in the centrifugal air duct 11. The shapes of the air outlet 13 and the air inlet 12 can be adaptively arranged according to actual needs. For example, the air outlet 13 and the air inlet 12 are both circular. In normal use, the fresh air device is used to be arranged on the air conditioner and installed indoors together with the indoor unit of the air conditioner. The air inlet 12 needs to be connected to the air inlet duct, which is extended to the outdoors to communicate with the outdoor air. The outside air is sucked into the centrifugal air duct 11 through the air inlet 12 by the rotation of the centrifugal fan 20, and then discharged into the room through the air outlet 13. In addition, a purification component such as a filter element or a sterilization lamp (not shown in the figure) can also be arranged in the centrifugal air duct 11 to filter and sterilize the air before it enters the room, thereby further improving the air quality.

[0059] A first baffle 30, a second baffle 40 and a first drive assembly 50 are provided on the outer shell 10. The first baffle 30 and the second baffle 40 are sequentially arranged at the air inlet 12 from the outside to the inside. The first baffle 30 is provided with a plurality of first through holes 31, and the second baffle 40 is provided with a plurality of second through holes 41. The shapes of the first baffle 30 and the second baffle 40 are both adapted to the shape of the air inlet 12, and the specific number, shape, size and distribution of the first through holes 31 and the second through holes 41 can be adaptively set according to the specific structure, size, etc. of the first baffle 30 and the second baffle 40. For example, the first through holes 31 and the second through holes 41 are both rectangular and evenly distributed. At least one of the first baffle 30 and the second baffle 40 is connected to the first driving assembly 50, and the first driving assembly 50 drives at least one of the first baffle 30 and the second baffle 40 to move relative to the other, so as to gradually increase the air intake of the air inlet 12 through the first through hole 31 and the second through hole 41 in sequence from a fully blocked state, a partially overlapped state to a fully overlapped state.

[0060] By setting the first baffle 30 and the second baffle 40 at the air inlet 12, on the one hand, it can block foreign objects and prevent mosquitoes or mice outside from entering the centrifugal air duct 11 through the air inlet 12; on the other hand, by changing the relative positions of the first baffle 30 and the second baffle 40, the connection area of ​​the first through hole 31 and the second through hole 41 can be adjusted to adjust the air intake volume at the air inlet 12, so that the air intake volume at the air inlet 12 can be adjusted when noise occurs in the fresh air device, thereby achieving the purpose of reducing noise and improving the user experience.

[0061] It is understandable that the first baffle 30 and the second baffle 40 can be relatively translated or relatively rotated. Moreover, the relative movement of the first baffle 30 and the second baffle 40 can be that the second baffle 40 and the housing 10 are relatively fixed and the first baffle 30 and the housing 10 move relative to each other, or that the first baffle 30 and the housing 10 are relatively fixed and the second baffle 40 and the housing 10 move relative to each other, or that both the first baffle 30 and the second baffle 40 move relative to each other, and can be adaptively set according to the specific installation method of the first baffle 30 and the second baffle 40 on the housing 10.

[0062] For example, Figure 1 As shown, the first baffle 30 can be circular and rotatably embedded in the circular air inlet 12, and the first baffle 30 is connected to the first driving assembly 50. The first driving assembly 50 drives the first baffle 30 to rotate, thereby adjusting the connecting area between each first through hole 31 and each second through hole 41 to achieve the purpose of adjusting the air intake volume.

[0063] Figure 4 The position relationship between the first baffle and the second baffle in the embodiment of the present application is Figure 1; Figure 5 The position relationship between the first baffle and the second baffle in the embodiment of the present application is Figure 2 ; Figure 6 The position relationship between the first baffle and the second baffle in the embodiment of the present application is Figure 3 .

[0064] Specifically, when the first baffle 30 is in Figure 4 When the first through hole 31 is completely blocked by the second baffle 40, the second through hole 41 is completely blocked by the first baffle 30, and the air inlet 12 is closed; when the first baffle 30 is based on Figure 4 The position shown in FIG. 1 is rotated clockwise, so that the first through hole 31 and the second through hole 41 gradually increase the communicating area (such as Figure 5 As shown), the air volume at the air inlet 12 gradually increases; when the first baffle 30 is based on Figure 4 When the position shown is rotated 90° clockwise, the positions of the first through holes 31 and the second through holes 41 coincide with each other, and at this time, the air intake at the air inlet 12 is the largest.

[0065] Figure 7 This is a cross-section of the fresh air device in the embodiment of the present application. Figure 1 .

[0066] Combination Figure 7 As shown, in some embodiments, the housing 10 may be provided with a second driving assembly, and the second baffle 40 is also movably connected to the housing 10, and the second baffle 40 is connected to the second driving assembly, and the second driving assembly can drive the second baffle 40 to move to one side of the air inlet 12. In this way, only the first baffle 30 exists at the air outlet 13, and when the first baffle 30 is in any position, all the first through holes 31 on the first baffle 30 are in a fully exposed state, so that the air intake at the air inlet 12 is maximized.

[0067] Therefore, during actual use by the user, the air intake at the air inlet 12 can be directly adjusted to the maximum state at any time by controlling the movement of the second baffle 40 driven by the second driving component. Moreover, when the second baffle 40 is moved back to the air inlet 12 by the second driving component, the relative positions of the first baffle 30 and the second baffle 40 are restored to the state before the second baffle 40 moves, so that the air intake volume continues to maintain the size before the second baffle 40 moves.

[0068] Figure 8 This is a cross-section of the fresh air device in the embodiment of the present application. Figure 2 .

[0069] Combination Figure 2 and Figure 8As shown, in some embodiments, a third baffle 60 and a third drive assembly may also be provided on the outer shell 10. The third baffle 60 may be movably connected to the outer shell 10 and connected to the third drive assembly. The shape of the third baffle 60 is adapted to the shape of the air inlet 12. The third drive assembly can drive the third baffle 60 to close the air inlet 12.

[0070] The third baffle 60 is driven to move by the third driving component. When the fresh air device is turned off or the air conditioner indoor unit is turned off as a whole, the third driving component can directly drive the third baffle 60 to move to the air inlet 12 to close the air inlet 12, so that outdoor air cannot enter the room by itself through the fresh air device. In addition, when the third baffle 60 is used to close the air inlet 12, the relative positions of the first baffle 30 and the second baffle 40 are unchanged. Therefore, when the fresh air device is restarted, after the third baffle 60 is reset to reopen the air inlet 12, the relative positions of the first baffle 30 and the second baffle 40 are still in the state before shutdown, and the air intake volume before shutdown can continue to be used to continue working.

[0071] It is worth mentioning that in this embodiment, there is no specific restriction on the relative positions of the first baffle 30, the second baffle 40 and the third baffle 60. For example, the first baffle 30 can be rotatably embedded in the air inlet 12, the second baffle 40 and the third baffle 60 are both arranged in the centrifugal air duct 11, and the third baffle 60 is located on the side of the second baffle 40 away from the first baffle 30.

[0072] Furthermore, the second baffle 40 and the third baffle 60 may be moved in any manner on the housing 10. Figure 3 , Figure 6 and Figure 7 As shown, a track 70 may be provided in the housing 10, and two tracks 70 may be provided and symmetrically distributed on both sides of the air inlet 12. The second baffle 40 and the third baffle 60 may be arranged between the two tracks 70. The track 70 is provided with a first slide groove 71 and a second slide groove 72 which are parallel to each other. The second baffle 40 may be slidably embedded in the first slide groove 71, and the third baffle 60 may be slidably embedded in the second slide groove 72. The second driving component drives the second baffle 40 to slide in the first slide groove, and the third driving component drives the third baffle 60 to slide in the second slide groove 72.

[0073] In this embodiment, there is no limitation on the specific structure of the first driving assembly 50 as long as it can drive the first baffle 30 to rotate.

[0074] For example, Figure 1As shown, the first driving component 50 may include a gear ring 51 and a driving motor 52. The gear ring 51 is arranged around the circumference of the first baffle 30. The gear ring 51 and the first baffle 30 may be integrally formed, or may be separately processed and then connected together by bonding, welding or clamping. The driving motor 52 is fixed to the housing 10. A gear 53 is provided on the output shaft of the driving motor 52. The gear 53 meshes with the gear ring 51, so that the driving motor 52 can be used to drive the gear 53 to rotate, and the gear 53 drives the gear ring 51 to rotate, thereby achieving the purpose of controlling the rotation of the first baffle 30.

[0075] The gear ring 51 may be a straight bevel gear ring 51, and the axis of the gear 53 and the axis of the gear ring 51 are perpendicular to each other, so that the drive motor 52 can be vertically fixed on one side of the first baffle 30, making the position layout of the drive motor 52 more compact.

[0076] Furthermore, a retaining ring 80 may be provided on the outer shell 10, and the retaining ring 80 is arranged around the circumference of the air inlet 12. The gear ring 51 is rotatably embedded in the retaining ring 80 so that the retaining ring 80 can protect the movement of the gear ring 51. The driving motor 52 is installed on the outside of the retaining ring 80. The retaining ring 80 is provided with a notch 81 for avoiding the gear 53 and part of the output shaft so that the gear 53 and the gear ring 51 can engage.

[0077] In addition, the second drive assembly and the third drive assembly mentioned above are not specifically limited in this embodiment. They only need to be able to drive the second baffle 40 and the third baffle 60 to slide. For example, the second drive assembly and the third drive assembly can use a magnetic control device or a screw structure to drive the second baffle 40 and the third baffle 60 to slide.

[0078] In summary, the fresh air device provided in this embodiment can prevent mosquitoes from entering the centrifugal air duct 11 through the first baffle 30 and the second baffle 40 provided at the air inlet 12, thereby preventing mosquitoes from entering the room through the fresh air device. In addition, by rotating the first baffle 30, the connection area of ​​the first through hole 31 and the second through hole 41 changes, so as to achieve the purpose of adjusting the air intake at the air inlet 12 and reduce the noise during the operation of the fresh air device. When the operation of the fresh air device is turned off, the air inlet 12 can also be closed by the third baffle 60 to prevent outdoor air from entering the room through the fresh air device, thereby improving the user experience.

[0079] Based on the above-mentioned fresh air device, an embodiment of the present application also provides an air conditioner, which includes an air-conditioning indoor unit and an air-conditioning outdoor unit, wherein the air-conditioning indoor unit can be vertical or hanging, and the air-conditioning indoor unit is provided with the above-mentioned fresh air device.

[0080] Fig. 9 It is a structural schematic diagram of the air-conditioning indoor unit in the embodiment of the present application.

[0081] Specifically, Fig. 9 As shown, the indoor unit of the air conditioner may include a casing (not shown) and an internal component 90, and the internal component 90 is installed in the casing. The fresh air device can be arranged inside the casing and connected to one side of the internal component 90, the air inlet 12 can be opened at the back of the casing 10, and the back of the casing also needs to be provided with an air inlet channel connected to the air inlet 12, and the air outlet 13 can be arranged on the side of the casing 10 away from the internal component 90, and the side of the casing also needs to be provided with an air outlet channel connected to the air outlet 13.

[0082] Of course, the fresh air device can also be directly installed on the outside of the casing, and can be adaptively set according to the specific structure of the air-conditioning indoor unit. No specific limitation is made in this embodiment.

[0083] It is understandable that the fresh air device can work alone or simultaneously with the indoor unit of the air conditioner. In actual use, it is also necessary to connect an air inlet duct at the air inlet 12, and use the air inlet duct to extend to the outside to communicate with the outdoor air. When the fresh air device works normally, the outdoor air is introduced into the centrifugal air duct 11 through the rotation of the centrifugal fan 20, and then discharged into the room through the air outlet 13, providing fresh air for the closed room and improving the indoor air quality.

[0084] Among them, the first baffle 30 and the second baffle 40 arranged at the air inlet 12 of the fresh air device can prevent outdoor mosquitoes from entering the centrifugal air duct 11, thereby preventing outdoor mosquitoes from entering the room through the fresh air device. In addition, the first driving component 50 drives the change of the relative position of the first baffle 30 and the second baffle 40 to adjust the connection area of ​​the first through hole 31 and the second through hole 41, so as to achieve the purpose of adjusting the size of the air intake at the air inlet 12, reduce the noise generated when the fresh air device is running, and improve the user experience.

[0085] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0086] Those skilled in the art will readily come up with other embodiments of the present application after considering the specification and practicing the technical solutions disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0087] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fresh air device for an air conditioner, characterized in that: The fresh air device comprises a housing and a centrifugal fan, a centrifugal air duct is arranged in the housing, the centrifugal air duct has an air inlet and an air outlet, and the centrifugal fan is rotatably arranged in the centrifugal air duct; The housing is provided with a first baffle, a second baffle and a first driving assembly, the first baffle and the second baffle are sequentially arranged at the air inlet from the outside to the inside, the first baffle is provided with a plurality of first through holes, and the second baffle is provided with a plurality of second through holes; At least one of the first baffle and the second baffle is connected to the first driving component, and the first driving component drives at least one of the first baffle and the second baffle to move relative to the other, so as to gradually increase the air intake of the air inlet through the first through hole and the second through hole in sequence from a fully blocked state, a partially overlapped state to a fully overlapped state.

2. The fresh air device according to claim 1, characterized in that: The first baffle is rotatably embedded in the air inlet and connected to the first driving assembly.

3. The fresh air device according to claim 2, characterized in that: The housing is also provided with a second driving assembly, the second baffle is movably connected to the housing and connected to the second driving assembly, and the second driving assembly can drive the second baffle to move to one side of the air inlet.

4. The fresh air device according to claim 3, characterized in that: The shell is also provided with a third baffle and a third driving assembly. The third baffle is movably connected to the shell and is connected to the third driving assembly. The third driving assembly can drive the third baffle to close the air inlet.

5. The fresh air device according to claim 4, characterized in that: The second baffle and the third baffle are both located in the centrifugal air duct, and the third baffle is located on a side of the second baffle away from the first baffle.

6. The fresh air device according to claim 5, characterized in that: The inner side wall of the shell is provided with a track, and a first slide groove and a second slide groove which are parallel to each other are provided on the track. The second baffle plate can be slidably embedded in the first slide groove, and the third baffle plate can be slidably embedded in the second slide groove.

7. The fresh air device according to any one of claims 2 to 6, characterized in that: The first driving assembly comprises: A gear ring, wherein the teeth are disposed around the circumference of the first baffle; A driving motor is arranged on the housing, and a gear is arranged on the output shaft of the driving motor, and the gear is meshed with the gear ring.

8. The fresh air device according to claim 7, characterized in that: The gear ring is a straight bevel gear ring, and the axis of the gear is perpendicular to the axis of the gear ring.

9. The fresh air device according to claim 8, characterized in that: The outer shell is provided with a retaining ring, the retaining ring is arranged around the circumference of the air inlet, the gear ring is rotatably embedded in the retaining ring, the drive motor is located on the outside of the retaining ring, and the retaining ring is provided with a notch to avoid the gear and part of the output shaft.

10. An air conditioner, characterized in that: It comprises an air-conditioning indoor unit and an air-conditioning outdoor unit, wherein the air-conditioning indoor unit is provided with a fresh air device as described in any one of claims 1-9.

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