Air conditioning device and air conditioner indoor unit

Abstract

The utility model provides an air conditioning device and an air conditioner indoor unit, and the air conditioning device comprises a fresh air shell, a fresh air inlet, a fresh air outlet and a fresh air outlet, the fresh air pipe is connected to the fresh air opening, and a first limiting part extending in the circumferential direction of the fresh air pipe is arranged on the wall of an inner hole of the fresh air pipe; the anti-backflow mechanism comprises a stop piece, the circumferential edge of the stop piece is provided with a second limiting part, the stop piece is provided with a cut-off position which is located in an inner hole of the fresh air pipe and connected with the first limiting part and the second limiting part in a matched mode, and the stop piece is used for limiting flowing of airflow in the fresh air pipe under the condition that the stop piece is located at the cut-off position. The first limiting part and the second limiting part are used for limiting movement of the stop piece in the axial direction of the fresh air pipe under the condition that the first limiting part and the second limiting part are connected in a matched mode. According to the air conditioning device and the air conditioner indoor unit, when the fresh air function is not operated, the blocking effect of the backflow prevention mechanism on flowing of airflow in the fresh air pipe can be improved, the situation that cold air flows backwards and enters a room is avoided, and user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning equipment, in particular to an air conditioning device and an indoor unit of an air conditioner. Background Art

[0002] With the development of science and technology, people's living standards are constantly improving, and various air conditioning equipment has also appeared in various activities of people, such as air conditioners, fresh air machines, humidifiers, and dehumidifiers. In addition, in order to integrate single product equipment with each other so that a product has richer functions, the corresponding air conditioning equipment has also been upgraded to varying degrees, such as air conditioners with fresh air function, humidifiers with fresh air function, and air conditioners with humidification function. In addition, in order to keep the indoor space warm in winter, the circulation volume of indoor air and outdoor air will be greatly reduced, which will lead to a decrease in indoor air quality, which may affect the health of people in the indoor space. Therefore, air conditioning equipment with fresh air modules is becoming more and more important. In addition, the fresh air module is usually connected to the outside space through a pipeline. However, when the fresh air module is not working, the air flow in the outdoor space will flow back into the room through the pipeline. Especially in winter, the cold wind will flow back into the room and affect the indoor ambient temperature, which will reduce the user experience.

[0003] At present, in the prior art, in order to prevent outdoor air from flowing back into the indoor space when the fresh air module is not working, an air leakage prevention structure is set on the pipeline. A valve is set on the pipeline, and a disc-shaped valve core is inside the valve. The valve core is driven by a motor to rotate to realize the on-off of the pipeline, so as to limit the backflow of air from the outdoor space into the indoor space when the fresh air module is not working. However, in such an air leakage prevention structure, the axis of the rotation center of the valve core is set along its diameter. The fresh air in the outdoor space will blow the valve core in the pipeline, which can easily cause the part of the valve core located on one side of the rotation center axis to move in the axial direction of the pipeline, causing the valve core to deflect and leak a gap between it and the inner wall of the pipeline, which will still cause cold air to flow back into the room. Utility Model Content

[0004] An object of the present utility model is to provide an air conditioning device and an indoor unit of an air conditioner which can solve at least one technical defect in the above-mentioned prior art.

[0005] A further object of the utility model is to enhance the blocking effect of the anti-backflow mechanism on the air flow in the fresh air duct when the fresh air function of the air conditioning device is not running, so as to further prevent the backflow of cold air into the room and enhance the user experience.

[0006] In particular, the utility model provides an air conditioning device, which comprises:

[0007] A fresh air shell, on which a fresh air outlet is arranged;

[0008] A fresh air duct is connected to the fresh air outlet, and a first limiting portion extending along the circumference of the fresh air duct is provided on the wall of the inner hole of the fresh air duct;

[0009] The backflow prevention mechanism includes:

[0010] The stopper has a second limiting portion on its circumferential edge, and has a cut-off position located in the inner hole of the fresh air duct and in which the first limiting portion and the second limiting portion are matched and connected, and is used to limit the flow of air in the fresh air duct when the stopper is in the cut-off position, and the first limiting portion and the second limiting portion are used to limit the axial movement of the stopper in the fresh air duct when matched and connected.

[0011] Furthermore, a first limit opening is opened on the fresh air duct corresponding to the cut-off position, and the first limit opening is connected to the inner hole of the fresh air duct. The first limit opening is used to allow the stopper to move from the outside of the fresh air duct to the cut-off position, and the first limit opening is also used to allow the stopper to move from the cut-off position out of the inner hole of the fresh air duct to allow the flow of air in the fresh air duct.

[0012] Furthermore, the second limiting portion is a plate-shaped structure;

[0013] The first limiting portion includes a first slot body, a second slot body and a third slot body, the first slot body, the second slot body, the third slot body and the first limiting opening are connected and arranged along the circumference of the fresh air duct, and the first slot body and the first limiting opening are arranged opposite to each other, the second slot body and the third slot body are arranged opposite to each other between the first limiting opening and the third slot body, and the second slot body and the third slot body are arranged along the moving direction of the stopper, and when the stopper is located at the cut-off position, the second limiting portion is correspondingly located in the first slot body, the second slot body and the third slot body.

[0014] Furthermore, the backflow prevention mechanism also includes:

[0015] The driving mechanism is arranged on the fresh air housing and is driven to be connected to the stopper, and is used to drive the stopper to move from the outside of the fresh air duct to a cut-off position through the first limiting opening.

[0016] Furthermore, the driving mechanism comprises:

[0017] The driving bracket is connected to the fresh air housing;

[0018] The driving cylinder is arranged on the driving bracket, the telescopic rod of the driving cylinder is connected to the stopper, and the telescopic rod is arranged along the moving direction of the stopper.

[0019] Furthermore, the driving mechanism comprises:

[0020] The driving bracket is connected to the fresh air housing;

[0021] A driving motor is arranged on the driving bracket, and a driving gear is arranged on the driving shaft of the driving motor;

[0022] The driving rod is arranged along the moving direction of the stopper, one end of which is connected to the stopper, and a driving rack is arranged on the driving rod along the moving direction of the stopper, and the driving rack is meshed and connected to the driving gear.

[0023] Furthermore, a limit shell is provided on the fresh air duct at a position corresponding to the first limit opening, and a limit cavity extending away from the fresh air duct along the moving direction of the stopper is provided in the limit shell, and the first limit opening is connected to the limit cavity;

[0024] The stopper has an inner hole that is separated from the fresh air duct and is in a connecting position in the limiting cavity, and the driving mechanism is also used to drive the stopper to move from the cut-off position to the connecting position;

[0025] The limiting shell is provided with a second limiting opening, which is arranged opposite to the first limiting opening. The first limiting opening is used to allow the driving mechanism to drive the stopper to move in a direction of leaving the limiting cavity.

[0026] Further, the stopper is a rectangular plate-shaped structure, the stopper and the second limiting portion are an integrated structure, and the shape of the limiting cavity is the same as the shape of the stopper, and the length of the cross section of the stopper, the length of the cross section of the limiting cavity, and the length of the forward projection figure of the first limiting opening are all the same, and the width of the cross section of the stopper, the width of the cross section of the limiting cavity, and the width of the forward projection figure of the first limiting opening are all the same;

[0027] The second slot body and the third slot body are in a linear structure arranged along the moving direction of the stopper, and the second slot body and the third slot body are used to limit the sliding of the stopper between the cut-off position and the connecting position.

[0028] Furthermore, the air conditioning device also includes:

[0029] An extension pipe, a first end of which is connected to the fresh air pipe, and a second end of which extends to the outdoor space; and

[0030] A plurality of clamping protrusions are arranged on the outer periphery of the fresh air duct, and each clamping protrusion extends in a radial direction of the fresh air duct in a direction away from the fresh air duct;

[0031] A plurality of clamping holes are provided on the wall of the first end of the extension tube at positions corresponding to the clamping protrusions, and the clamping protrusions are correspondingly clamped in the clamping holes.

[0032] In particular, the utility model also provides an indoor unit of an air conditioner, comprising the above-mentioned air conditioning device.

[0033] The air conditioning device of the utility model is provided with a first limiting portion extending along the circumference thereof on the wall of the inner hole of the fresh air duct, and the circumferential edge of the stopper of the anti-backflow mechanism is provided with a second limiting portion, and the stopper has a cut-off position located in the inner hole of the fresh air duct and the first limiting portion and the second limiting portion are matched and connected, the first limiting portion and the second limiting portion are used to limit the axial movement of the stopper in the fresh air duct when they are matched and connected, and then due to the limiting effect of the first limiting portion and the second limiting portion on the stopper, when the fresh air in the outdoor space blows toward the stopper in the pipeline, the stopper will not move along the axial direction of the fresh air duct, and will not deflect and leak a gap between the inner wall of the inner hole of the fresh air duct. Therefore, the air conditioning device of the utility model can improve the blocking effect of the anti-backflow mechanism on the airflow in the fresh air duct when the fresh air function is not running, that is, when the stopper is in the cut-off position, so as to further prevent the cold air from backflowing into the room, so as to improve the user experience.

[0034] The indoor unit of the air conditioner of the present invention comprises the above-mentioned air conditioning device, and thus the indoor unit of the air conditioner of the present invention also has the beneficial technical effects possessed by the above-mentioned air conditioning device.

[0035] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0037] Figure 1 It is a structural schematic diagram of an air conditioning device according to an embodiment of the utility model;

[0038] Figure 2 This is one of the cross-sectional structural schematic diagrams of an air conditioning device according to an embodiment of the utility model;

[0039] Figure 3 This is a second schematic cross-sectional view of an air conditioning device according to an embodiment of the utility model;

[0040] Figure 4 It is a structural schematic diagram of a stopper in an air conditioning device according to an embodiment of the utility model;

[0041] Figure 5 This is a third schematic cross-sectional view of an air conditioning device according to an embodiment of the utility model;

[0042] Figure 6 This is a fourth schematic cross-sectional view of an air conditioning device according to an embodiment of the utility model;

[0043] Figure 7 yes Figure 1 An enlarged schematic diagram of the area "A" in the figure;

[0044] Figure 8 It is a structural schematic diagram of an air conditioner indoor unit according to an embodiment of the utility model. DETAILED DESCRIPTION

[0045] In the description of this embodiment, it is necessary to understand that the terms "center", "lateral", "width", "inside", "outside", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0047] Unless otherwise clearly defined and specified, the terms "installation", "setting", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0048] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the description of this embodiment have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0050] In the description of this embodiment, the description with reference to the terms "this embodiment", "variant embodiment", "implementation method", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] Combine the following Figures 1 to 7 The air conditioning device of this embodiment will be described in detail. Figure 1 It is a structural schematic diagram of an air conditioning device according to an embodiment of the utility model; Figure 2 This is one of the cross-sectional structural schematic diagrams of an air conditioning device according to an embodiment of the utility model; Figure 3 This is a second schematic cross-sectional view of an air conditioning device according to an embodiment of the utility model; Figure 4 It is a structural schematic diagram of a stopper in an air conditioning device according to an embodiment of the utility model; Figure 5 This is a third schematic cross-sectional view of an air conditioning device according to an embodiment of the utility model; Figure 6 This is a fourth schematic cross-sectional view of an air conditioning device according to an embodiment of the utility model; Figure 7 yes Figure 1 Enlarged schematic diagram of point "A" in the figure.

[0052] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4In this embodiment, the air conditioning device includes a fresh air housing 100, a fresh air duct 200 and a backflow prevention mechanism 300. The fresh air housing 100 is provided with a fresh air inlet 110; the fresh air duct 200 is connected to the fresh air inlet 110, and a first limiting portion 210 extending along the circumference thereof is provided on the wall of the inner hole of the fresh air duct 200; the backflow prevention mechanism 300 includes a stopper 310, and the circumferential edge of the stopper 310 has a second limiting portion 311, and the stopper 310 has a cut-off position (such as a stopper 310) located in the inner hole of the fresh air duct 200 and the first limiting portion 210 and the second limiting portion 311 are matched and connected. Figure 2 ), the stopper 310 is used to limit the flow of air in the fresh air duct 200 when it is in the cut-off position, and the first limiting portion 210 and the second limiting portion 311 are used to limit the axial movement of the stopper 310 in the fresh air duct 200 when they are matched and connected.

[0053] Since a first limiting portion 210 extending along the circumference is provided on the wall of the inner hole of the fresh air duct 200 of the air conditioning device of this embodiment, and since a second limiting portion 311 is provided on the circumferential edge of the stopper 310 of the anti-backflow mechanism 300 of the air conditioning device, and the stopper 310 has a cut-off position located in the inner hole of the fresh air duct 200 and the first limiting portion 210 and the second limiting portion 311 are matched and connected, the first limiting portion 210 and the second limiting portion 311 are used to limit the axial movement of the stopper 310 in the fresh air duct 200 when matched and connected, and then due to the limiting effect of the first limiting portion 210 and the second limiting portion 311 on the stopper 310, when the fresh air in the outdoor space is blown toward the stopper 310 in the pipeline, the stopper 310 will not move along the axial direction of the fresh air duct 200, and will not deflect and leak a gap between the inner wall of the inner hole of the fresh air duct 200. Therefore, the air conditioning device of this embodiment can improve the blocking effect of the anti-backflow mechanism 300 on the air flow in the fresh air duct 200 when the fresh air function is not running, that is, when the stopper 310 is in the cut-off position, so as to further prevent the backflow of cold air into the room, thereby improving the user experience.

[0054] Reference Figure 2 and Figure 3 In this embodiment, a first limit opening 220 is opened on the fresh air duct 200 corresponding to the cut-off position, and the first limit opening 220 is connected to the inner hole of the fresh air duct 200. The first limit opening 220 is used to allow the stopper 310 to move from the outside of the fresh air duct 200 to the cut-off position, and the first limit opening 220 is also used to allow the stopper 310 to move out of the inner hole of the fresh air duct 200 from the cut-off position to allow the flow of air in the fresh air duct 200.

[0055] It is understandable that, by setting the first limit opening 220, the stopper 310 can be movably moved to the cut-off position to limit the flow of air in the fresh air duct 200; and the stopper 310 can be allowed to move out of the inner hole of the fresh air duct 200 from the cut-off position, so that the fresh air duct 200 can deliver fresh air to the fresh air module of the air conditioning device. In addition, the anti-backflow mechanism 300 can also adjust the flow rate of the air flow in the fresh air duct 200 by blocking the passing area of ​​the inner hole of the fresh air duct 200 by the stopper 310, so as to meet more functions of the air conditioning device, meet more needs of users, and improve user experience.

[0056] Reference Figure 2 and Figure 3 In the present embodiment, the second limiting portion 311 is a plate-like structure; the first limiting portion 210 includes a first slot body 211, a second slot body 212 and a third slot body 213, the first slot body 211, the second slot body 212, the third slot body 213 and the first limiting opening 220 are connected and arranged along the circumference of the fresh air duct 200, and the first slot body 211 and the first limiting opening 220 are arranged opposite to each other, the second slot body 212 and the third slot body 213 are arranged opposite to each other between the first limiting opening 220 and the third slot body 213, and the second slot body 212 and the third slot body 213 are arranged along the moving direction of the stopper 310, and when the stopper 310 is in the cut-off position, the second limiting portion 311 is correspondingly located in the first slot body 211, the second slot body 212 and the third slot body 213. Therefore, the first limiting portion 210 and the second limiting portion 311 can limit the axial movement of the stopper 310 in the fresh air duct 200 when they are matched and connected.

[0057] In the modified embodiment, the second limiting portion 311 is a groove-shaped mechanism, the first limiting portion 210 includes a first plate, a second plate and a third plate, the second plate, the first plate, the third plate and the first limiting opening 220 are sequentially arranged along the circumference of the fresh air duct 200, and the first plate and the first limiting opening 220 are arranged oppositely, the second plate and the third plate are arranged oppositely between the first limiting opening 220 and the third plate, and the second plate and the third plate are arranged along the moving direction of the stopper 310, and when the stopper 310 is located at the cut-off position, the first plate, the second plate and the third plate are correspondingly located in the inner second limiting portion 311. In this way, the first limiting portion 210 and the second limiting portion 311 can limit the movement of the stopper 310 in the axial direction of the fresh air duct 200 when they are matched and connected.

[0058] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6In this embodiment, the backflow prevention mechanism 300 further includes a driving mechanism 320. The driving mechanism 320 is disposed on the fresh air housing 100, and the driving mechanism 320 drives the stopper 310 connected thereto, and the driving mechanism 320 is used to drive the stopper 310 to move from the outside of the fresh air duct 200 to the cut-off position through the first limit opening 220. In this way, the stopper 310 can be electrically controlled so that the stopper 310 moves from the outside of the fresh air duct 200 to the cut-off position, and the stopper 310 moves out of the inner hole of the fresh air duct 200 from the cut-off position.

[0059] Reference Figure 1 , Figure 2 and Figure 5 In the first implementation of the driving mechanism 320 of the present embodiment, the driving mechanism 320 includes a driving bracket 321 and a driving cylinder 322. The driving bracket 321 is connected to the fresh air housing 100. The driving cylinder 322 is disposed on the driving bracket 321. The telescopic rod 3221 of the driving cylinder 322 is connected to the stopper 310, and the telescopic rod 3221 of the driving cylinder 322 is arranged along the moving direction of the stopper 310. Thus, the stopper 310 can be driven.

[0060] In addition, the driving cylinder 322 can be a hydraulic cylinder, a pneumatic cylinder, an electric push rod, etc.

[0061] Reference Figure 6 In the second implementation of the driving mechanism 320 of the present embodiment, the driving mechanism 320 includes a driving bracket 321, a driving motor 323 and a driving rod 324. The driving bracket 321 is connected to the fresh air housing 100. The driving motor 323 is arranged on the driving bracket 321. A driving gear 3231 is arranged on the driving shaft of the driving motor 323. The driving rod 324 is arranged along the moving direction of the stopper 310. One end of the driving rod 324 is connected to the stopper 310. A driving rack 3241 is arranged on the driving rod 324 along the moving direction of the stopper 310. The driving rack 3241 is meshed and connected to the driving gear 3231. In this way, the driving of the stopper 310 can be realized.

[0062] Reference Figure 2 , Figure 3 , Figure 5 and Figure 6 In this embodiment, a limiting shell 230 is provided on the fresh air duct 200 at a position corresponding to the first limiting opening 220, and a limiting cavity 231 extending away from the fresh air duct 200 along the moving direction of the stopper 310 is provided in the limiting shell 230, and the first limiting opening 220 is connected to the limiting cavity 231; the stopper 310 has a connecting position (such as a position that is separated from the inner hole of the fresh air duct 200 and is located in the limiting cavity 231) Figure 5 ), and the driving mechanism 320 is also used to drive the stopper 310 to move from the cut-off position to the connecting position.

[0063] It can be understood that the limiting shell 230 can protect the stopper 310 , and at the same time, the limiting cavity 231 can limit the movement of the stopper 310 to ensure the stability of the movement of the stopper 310 .

[0064] In addition, the limiting shell 230 and the fresh air duct 200 can be an integrated structure.

[0065] Reference Figure 3 and Figure 6 In this embodiment, a second limiting opening 232 is provided on the limiting shell 230, and the second limiting opening 232 is arranged relative to the first limiting opening 220. The first limiting opening 220 is used to allow the driving mechanism 320 to drive the stopper 310 to move in a direction out of the limiting cavity 231.

[0066] It can be ensured that, by setting the second limit opening 232 , the stopper 310 can have a larger size in the moving direction, so as to ensure the effect of the stopper 310 on limiting the airflow in the fresh air duct 200 .

[0067] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In this embodiment, the stopper 310 is a rectangular plate-shaped structure, and the shape of the limiting cavity 231 is the same as the shape of the stopper 310, and the length L of the cross section of the stopper 310, the length M of the cross section of the limiting cavity 231, and the length N of the forward projection figure of the first limiting opening 220 are all the same, and the width P of the cross section of the stopper 310, the width Q of the cross section of the limiting cavity 231, and the width R of the forward projection figure of the first limiting opening 220 are all the same, so as to ensure the stability of the stopper 310 in moving between the cut-off position and the connecting position.

[0068] Reference Figure 4 In this embodiment, the stopper 310 and the second limiting portion 311 are an integrated structure.

[0069] Reference Figure 2 and Figure 3 In this embodiment, the second groove body 212 and the third groove body 213 are linear structures arranged along the moving direction of the stop member 310. The second groove body 212 and the third groove body 213 are used to limit the sliding of the stop member 310 between the cut-off position and the connecting position, and the first groove body 211 can be a linear structure that fits the stop member 310.

[0070] It can be understood that when the stopper 310 is a rectangular plate structure, the second groove body 212 and the third groove body 213 need to be configured as a linear structure arranged along the moving direction of the stopper 310, so as to enable the stopper 310 to slide into place between the cut-off position and the connecting position, and to ensure that the stopper 310 is in contact with the inner wall of the fresh air duct 200.

[0071] In addition, in the present embodiment, the second groove body 212 and the third groove body 213 can be replaced with a slide rail structure, and a slider is correspondingly arranged on the stop member 310, so that the first limiting portion 210 and the second limiting portion 311 can limit the axial movement of the stop member 310 in the fresh air duct 200 when they are matched and connected, and the stop member 310 can slide between the cut-off position and the connecting position.

[0072] In the first variant embodiment, the stopper 310 can also be set as a disc-shaped structure, and the first groove body 211, the second groove body 212 and the third groove body 213 can be arc-shaped structures to ensure the fit between the first limiting portion 210 and the second limiting portion 311 when the stopper 310 is in the cut-off position, so as to ensure the effect of the stopper 310 on limiting the airflow in the fresh air duct 200.

[0073] In this variant embodiment, the lateral width of the limit cavity 231 and the distance between the two ends of the first limit opening 220 in the circumferential direction of the fresh air duct 200 are the same as the diameter of the stop member 310 to ensure the feasibility and stability of the stop member 310 moving between the cut-off position and the connecting position.

[0074] In the second variant embodiment, the difference from the aforementioned present embodiment is that the stopper 310 can be set to a block structure, or other shapes that can limit the flow of air in the fresh air duct 200.

[0075] Reference Figure 1 , Figure 2 , Figure 5 and Figure 7 In this embodiment, the air conditioning device further includes an extension pipe 400. The first end of the extension pipe 400 is connected to the fresh air pipe 200, and the second end of the extension pipe 400 extends to the outdoor space to transport the fresh air flow in the outdoor space to the fresh air module and the indoor space.

[0076] In addition, the extension tube 400 may be a corrugated tube so as to be able to extend in any direction in an indoor space, an outdoor space or a wall.

[0077] Reference Figure 7In this embodiment, a plurality of clamping protrusions 240 are arranged on the outer circumference of the fresh air duct 200, and each clamping protrusion 240 extends in the radial direction of the fresh air duct 200 in a direction away from the fresh air duct 200; a plurality of clamping holes 410 are opened on the wall of the first end of the extension tube 400 at positions corresponding to the clamping protrusions 240, and the clamping protrusions 240 are correspondingly clamped in the clamping holes 410. This realizes the connection between the fresh air duct 200 and the extension tube 400.

[0078] Reference Figure 7 In this embodiment, a connecting hole 420 is opened on the wall of the first end of the extension tube 400 corresponding to the snap-in hole 410, the connecting hole 420 is connected to the snap-in hole 410 and the end surface of the first end, and multiple snap-in holes 410 extend from the connecting hole 420 in the same direction along the circumference of the extension tube 400.

[0079] It is understandable that, by providing the connecting hole 420 , the detachable installation between the fresh air duct 200 and the extension tube 400 can be achieved, so as to facilitate the repair and maintenance of the anti-backflow mechanism 300 and the fresh air module of the air conditioning device.

[0080] Reference Figure 7 In this embodiment, a protective cover 430 is provided at a position of the first end of the extension tube 400 corresponding to the communicating hole 420 , and the protective cover 430 is protruded in a radial direction of the extension tube 400 in a direction away from the extension tube 400 .

[0081] It is understandable that the provision of the protective cover 430 can effectively prevent the operator's hands from being squeezed between the snap-fit ​​protrusion 240 and the connecting hole 420 when disassembling and installing the fresh air duct 200 and the extension tube 400, thereby ensuring safety when disassembling and installing the air conditioning device.

[0082] Combine the following Figure 8 The air conditioner indoor unit of this embodiment will be described in detail. Figure 8 It is a structural schematic diagram of an air conditioner indoor unit according to an embodiment of the utility model.

[0083] Reference Figure 8 In this embodiment, the indoor unit of the air conditioner includes the air conditioning device of the above embodiment, and thus the indoor unit of the air conditioner of this embodiment also has the beneficial technical effects possessed by the air conditioning device of the above embodiment.

[0084] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An air conditioning device, characterized in that: include: A fresh air shell, on which a fresh air outlet is arranged; A fresh air duct is connected to the fresh air outlet, and a first limiting portion extending along the circumference of the fresh air duct is provided on the wall of the inner hole of the fresh air duct; The backflow prevention mechanism includes: A stopper having a second limiting portion on its circumferential edge and a cut-off position located in the inner hole of the fresh air duct and in which the first limiting portion and the second limiting portion are matched and connected, for limiting the flow of air in the fresh air duct when the stopper is in the cut-off position, and the first limiting portion and the second limiting portion are matched and connected to limit the axial movement of the stopper in the fresh air duct.

2. The air conditioning device according to claim 1, characterized in that: A first limit opening is provided on the fresh air duct corresponding to the cut-off position, and the first limit opening is connected to the inner hole of the fresh air duct. The first limit opening is used to allow the stopper to move from the outside of the fresh air duct to the cut-off position, and the first limit opening is also used to allow the stopper to move from the cut-off position out of the inner hole of the fresh air duct to allow the flow of air in the fresh air duct.

3. The air conditioning device according to claim 2, characterized in that: The second limiting portion is a plate-shaped structure; The first limiting portion includes a first slot body, a second slot body and a third slot body, the first slot body, the second slot body, the third slot body and the first limiting opening are connected and arranged along the circumference of the fresh air duct, and the first slot body and the first limiting opening are arranged opposite to each other, the second slot body and the third slot body are arranged opposite to each other between the first limiting opening and the third slot body, and the second slot body and the third slot body are arranged along the moving direction of the stopper, and when the stopper is located at the cut-off position, the second limiting portion is correspondingly located in the first slot body, the second slot body and the third slot body.

4. The air conditioning device according to claim 3, characterized in that: The anti-backflow mechanism also includes: The driving mechanism is arranged on the fresh air housing and is driven to be connected to the stopper, so as to drive the stopper to move from the outside of the fresh air duct to the cut-off position through the first limiting opening.

5. The air conditioning device according to claim 4, characterized in that: The driving mechanism comprises: A driving bracket connected to the fresh air housing; The driving cylinder is arranged on the driving bracket, the telescopic rod of the driving cylinder is connected to the stopper, and the telescopic rod is arranged along the moving direction of the stopper.

6. The air conditioning device according to claim 4, characterized in that: The driving mechanism comprises: A driving bracket connected to the fresh air housing; A driving motor is arranged on the driving bracket, and a driving gear is arranged on the driving shaft of the driving motor; The driving rod is arranged along the moving direction of the stopper, one end of which is connected to the stopper, and a driving rack is arranged on the driving rod along the moving direction of the stopper, and the driving rack is meshed and connected to the driving gear.

7. The air conditioning device according to claim 4, characterized in that: A limiting shell is provided on the fresh air duct at a position corresponding to the first limiting opening, and a limiting cavity extending away from the fresh air duct along the moving direction of the stopper is provided in the limiting shell, and the first limiting opening is communicated with the limiting cavity; The stopper has a connection position separated from the inner hole of the fresh air duct and located in the limit cavity, and the driving mechanism is also used to drive the stopper to move from the cut-off position to the connection position; The limiting shell is provided with a second limiting opening, the second limiting opening is arranged relative to the first limiting opening, and the first limiting opening is used to allow the driving mechanism to drive the stopper to move in a direction of leaving the limiting cavity.

8. The air conditioning device according to claim 7, characterized in that: The stopper is a rectangular plate-shaped structure, the stopper and the second limiting portion are an integrated structure, the limiting cavity has the same shape as the stopper, and the length of the cross section of the stopper, the length of the cross section of the limiting cavity, and the length of the forward projection of the first limiting opening are all the same, and the width of the cross section of the stopper, the width of the cross section of the limiting cavity, and the width of the forward projection of the first limiting opening are all the same; The second slot body and the third slot body are in a linear structure arranged along the moving direction of the stopper, and the second slot body and the third slot body are used to limit the sliding movement of the stopper between the cut-off position and the connecting position.

9. The air conditioning device according to claim 1, characterized in that: Also includes: An extension pipe, a first end of which is connected to the fresh air pipe, and a second end of which extends to the outdoor space; and A plurality of clamping protrusions are arranged on the outer circumference of the fresh air duct, and each of the clamping protrusions extends in a radial direction of the fresh air duct in a direction away from the fresh air duct; A plurality of clamping holes are provided on the wall of the first end of the extension tube at positions corresponding to the clamping protrusions, and the clamping protrusions are correspondingly clamped in the clamping holes.

10. An air conditioner indoor unit, characterized in that: Comprising the air conditioning device according to any one of claims 1 to 9.

Images