Structure for self-cleaning filter screen of air conditioner and air conditioner

Abstract

The present application relates to the technical field of air conditioning, and discloses a structure for self-cleaning of an air conditioner filter, comprising: a filter, including a first sub-filter and a second sub-filter; and a driving device, which is drivingly connected to the first sub-filter and / or the second sub-filter, and is configured to drive the first sub-filter and / or the second sub-filter to move in a direction close to the heat exchanger of the air conditioner, so as to move to a cleaning position abutting against the heat exchanger. In the cleaning position, since the first sub-filter and / or the second sub-filter are abutting against the surface of the heat exchanger, the first sub-filter and / or the second sub-filter can be cleaned while the heat exchanger is being cleaned, thereby cleaning at least part of the filter. In other words, the cleaning of the filter and the cleaning of the heat exchanger are carried out simultaneously. The present application also discloses an air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, for example, to a structure for self-cleaning a filter screen of an air conditioner and an air conditioner. Background Art

[0002] At present, when the existing air conditioner is used for a long time, the dust in the air will enter the return air outlet of the air conditioner. The fine dust will circulate through the filter, but the dust particles with larger diameter will adhere to the filter of the air conditioner. Due to the influence of wind speed and mesh size, the dust will form a chain structure, which will capture finer dust by swinging left and right. In addition, the influence of humidity in the air will increase the viscosity of the dust, making the dust more firmly attached to the surface of the filter, which is extremely difficult to clean. When the filter is in a dirty state for a long time, bacteria will breed and become the source of viruses and bacteria.

[0003] The existing filter cleaning method is mainly based on mechanical cleaning, which has many moving parts and occupies a large space. It cannot be directly applied to existing air conditioners, which will greatly increase the thickness of existing air conditioners and make the overall appearance unsightly. In addition, the existing cleaning method uses a rotating shaft, and the process is to use a rotating shaft to drive the air conditioning filter to move and reset along the cleaning path, and set a water tank at a fixed position to clean the filter with water. However, this cleaning method requires a large amount of condensed water. In areas with low humidity, the amount of condensed water is not enough to clean the filter. Secondly, when heating in winter, no condensed water is generated, and the filter cannot be cleaned. The lack of condensed water has become a fatal flaw of this filter cleaning method. A few use ultrasonic cleaning to clean the filter, but it requires multiple points to be arranged, and the noise affects the user's use, resulting in a poor user experience. Summary of the invention

[0004] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0005] The disclosed embodiments provide a structure for self-cleaning an air conditioner filter and an air conditioner to solve the problems that the existing mechanical cleaning method causes the thickness of the air conditioner to increase, the rotating shaft cleaning method has a large requirement for the amount of condensed water, and the ultrasonic method has high noise.

[0006] According to a first aspect of an embodiment of the present invention, a structure for self-cleaning of an air conditioner filter is provided, comprising: a filter, including a first sub-filter and a second sub-filter; and a driving device, which is drivingly connected to the first sub-filter and / or the second sub-filter and is configured to drive the first sub-filter and / or the second sub-filter to move toward a direction close to a heat exchanger of the air conditioner so as to move to a cleaning position abutting against the heat exchanger.

[0007] According to a second aspect of an embodiment of the present invention, an air conditioner is provided, comprising: a heat exchanger; and a structure for self-cleaning of an air conditioner filter as described in any one of the above embodiments, wherein the filter is arranged on one side of the heat exchanger.

[0008] The structure for self-cleaning the air conditioner filter and the air conditioner provided in the embodiments of the present disclosure can achieve the following technical effects:

[0009] When the filter needs to be cleaned, the driving device drives the first sub-filter and / or the second sub-filter to move to the cleaning position. In the cleaning position, since the first sub-filter and / or the second sub-filter are in contact with the surface of the heat exchanger (i.e., the first sub-filter and / or the second sub-filter are in contact with the heat exchanger), the first sub-filter and / or the second sub-filter can be cleaned while the heat exchanger is cleaned, thereby cleaning at least part of the filter. In other words, the cleaning of the filter is performed synchronously with the cleaning of the heat exchanger. On the one hand, the filter is driven to the cleaning position by the driving device to clean the filter, which has a simple structure and avoids the disadvantage of the existing mechanical cleaning method that causes the thickness of the air conditioner to increase, and at the same time avoids the disadvantage of the rotating shaft cleaning method having a large requirement for the amount of condensed water and the ultrasonic method having a large noise; on the other hand, while cleaning the filter, it avoids the disadvantage that the cleaning of the filter and the cleaning of the heat exchanger need to be performed separately, thereby improving the cleaning efficiency of the filter and the heat exchanger.

[0010] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0012] Figure 1 is a schematic diagram of a structure for self-cleaning of an air conditioner filter provided by an embodiment of the present disclosure;

[0013] Figure 2is a schematic diagram of another structure for self-cleaning of an air conditioner filter provided by an embodiment of the present disclosure;

[0014] Figure 3 is a schematic diagram of another structure for self-cleaning of an air conditioner filter provided by an embodiment of the present disclosure;

[0015] Figure 4 It is a cross-sectional schematic diagram of a structure for self-cleaning of an air conditioner filter provided by an embodiment of the present disclosure.

[0016] Reference numerals:

[0017] 10 housing, 20 filter, 201 first sub-filter, 2011 first sub-filter body, 2012 first rotating shaft, 202 second sub-filter, 2021 second sub-filter body, 2022 second rotating shaft, 30 driving device, 301 driver, 302 first gear, 303 second gear, 304 gear box, 305 fixing structure. DETAILED DESCRIPTION

[0018] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0019] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure 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 terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0020] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions 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 disclosure can be understood according to specific circumstances.

[0021] 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.

[0022] Unless otherwise stated, the term "plurality" means two or more.

[0023] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0025] Combination Figure 1-4 As shown, the embodiment of the present disclosure provides a structure for self-cleaning of a filter screen of an air conditioner, and the air conditioner may be a wall-mounted air conditioner or a cabinet air conditioner. The following is specifically described by taking a wall-mounted air conditioner as an example.

[0026] The air conditioner includes an air conditioner body and a structure for self-cleaning of the air conditioner filter. The air conditioner body includes a heat exchanger, a wind wheel or a fan and a housing 10. The structure for self-cleaning of the air conditioner filter includes a filter 20, and the filter 20 is arranged on one side of the heat exchanger, for example, the filter 20 is arranged above the heat exchanger. The housing 10 defines an installation space, and a return air port is arranged on the housing 10, and air enters the installation space from the return air port. The heat exchanger, the filter 20, the wind wheel or the fan are arranged in the installation space. The housing 10 is provided with an air outlet connected to the installation space. Under the action of the wind wheel or the fan, the air enters the installation space from the return air port, passes through the filter 20 and the heat exchanger in sequence, and is blown out through the air outlet.

[0027] The structure for self-cleaning the filter of the air conditioner comprises a filter 20 and a driving device 30 , and the filter 20 is used to filter the air flowing through the filter 20 .

[0028] The filter 20 includes a first sub-filter 201 and a second sub-filter 202; the driving device 30 is drivingly connected to the first sub-filter 201 and / or the second sub-filter 202. In other words, the driving device 30 is drivingly connected to at least one of the first sub-filter 201 and the second sub-filter 202 to drive the first sub-filter 201 and / or the second sub-filter 202 to move toward the direction close to the heat exchanger, so that the first sub-filter 201 and / or the second sub-filter 202 moves to a cleaning position close to the heat exchanger.

[0029] In the cleaning position, the first sub-filter 201 and / or the second sub-filter 202 are in contact with the heat exchanger, wherein "in contact with each other" means that the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is smaller than the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger when the air conditioner is normally cooling or heating. Therefore, "in contact with each other" includes two situations: at least part of the first sub-filter 201 and / or the second sub-filter 202 is in contact with the surface of the heat exchanger (that is, the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is zero) and the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is smaller. Among them, the smaller distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger means that the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is smaller than the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger when the air conditioner is normally cooling or heating. Since the position of the first sub-filter 201 and / or the second sub-filter 202 when the air conditioner is normally cooling or heating is defined as the working position, when the first sub-filter 201 and / or the second sub-filter 202 is "attached" to the heat exchanger, the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is smaller than the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger in the working position. In other words, when the first sub-filter 201 and / or the second sub-filter 202 need to be cleaned, the driving device 30 drives the first sub-filter 201 and / or the second sub-filter 202 to move toward the heat exchanger and to the cleaning position. After the cleaning is completed, the driving device 30 drives the first sub-filter 201 and / or the second sub-filter 202 to move away from the heat exchanger and to the working position. Figure 1 and Figure 2 In the embodiment, the first sub-filter and the second sub-filter are in the working position, such as Figure 3The first filter screen and the second sub-filter screen are in the cleaning position.

[0030] like Figure 3 As shown, in the cleaning position, the driving device 30 drives the first sub-filter 201 and / or the second sub-filter 202 to move downward, so that the first sub-filter 201 and / or the second sub-filter 202 are close to the heat exchanger, and the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is small, especially in the cleaning position, the first sub-filter 201 and / or the second sub-filter 202 is pressed against the surface of the heat exchanger, and the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is zero, so that the frost of the heat exchanger can be used for defrosting. The frosting and defrosting of the first sub-filter 201 and / or the second sub-filter 202 is achieved, so that the first sub-filter 201 and / or the second sub-filter 202 can be cleaned while the heat exchanger is cleaned, thereby simplifying the cleaning method of the first sub-filter 201 and / or the second sub-filter 202, improving the cleaning efficiency of the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger, reducing the user's behavior and avoiding the disadvantage that the cleaning of the first sub-filter 201 and / or the second sub-filter 202 and the cleaning of the heat exchanger need to be performed separately.

[0031] like Figures 1 to 3As shown, taking the example that the driving device 30 is driven and connected with the first sub-filter 201 and the second sub-filter 202, the driving device 30 drives the first sub-filter 201 and the second sub-filter 202 to move in the direction close to the heat exchanger, and moves to the cleaning position where the heat exchanger is close to each other. In the cleaning position, the first sub-filter 201 and the second sub-filter 202 are close to the heat exchanger, where "close to each other" means that the distance between the first sub-filter 201 and the heat exchanger is smaller than the distance between the first sub-filter 201 and the heat exchanger when the air conditioner is normally cooling or heating, and the distance between the second sub-filter 202 and the heat exchanger is smaller than the distance between the second sub-filter 202 and the heat exchanger when the air conditioner is normally cooling or heating. Therefore, the first sub-filter 201 "sticks to" the heat exchanger, including two situations: the first sub-filter 201 sticks to the surface of the heat exchanger (i.e., the distance between the first sub-filter 201 and the heat exchanger is zero) and the distance between the first sub-filter 201 and the heat exchanger is small. The second sub-filter 202 "sticks to" the heat exchanger, including two situations: the second sub-filter 202 sticks to the surface of the heat exchanger (i.e., the distance between the second sub-filter 202 and the heat exchanger is zero) and the distance between the second sub-filter 202 and the heat exchanger is small. Among them, the distance between the first sub-filter 201 and the heat exchanger is smaller means that the distance between the first sub-filter 201 and the heat exchanger is smaller than the distance between the first sub-filter 201 and the heat exchanger when the air conditioner is normally cooling or heating. Since the position of the first sub-filter 201 when the air conditioner is normally cooling or heating is defined as the working position, the distance between the first sub-filter 201 and the heat exchanger when the first sub-filter 201 is "closed" to the heat exchanger is smaller than the distance between the first sub-filter 201 and the heat exchanger in the working position. In other words, when the first sub-filter 201 needs to be cleaned, the driving device 30 drives the first sub-filter 201 to move in a direction close to the heat exchanger and to the cleaning position. After the cleaning is completed, the driving device 30 drives the first sub-filter 201 to move in a direction away from the heat exchanger and to the working position. The smaller distance between the second sub-filter 202 and the heat exchanger means that the distance between the second sub-filter 202 and the heat exchanger is smaller than the distance between the second sub-filter 202 and the heat exchanger when the air conditioner is in normal cooling and heating. Since the position of the second sub-filter 202 when the air conditioner is in normal cooling and heating is defined as the working position, the distance between the second sub-filter 202 and the heat exchanger when the second sub-filter 202 and the heat exchanger are "close" to each other is smaller than the distance between the second sub-filter 202 and the heat exchanger in the working position. In other words, when the second sub-filter 202 needs to be cleaned, the driving device 30 drives the second sub-filter 202 to move in a direction close to the heat exchanger and to the cleaning position. After the cleaning is completed, the driving device 30 drives the second sub-filter 202 to move in a direction away from the heat exchanger and to the working position.

[0032] The driving device 30 is drivingly connected to the first sub-filter 201 to drive the first sub-filter 201 to move to the cleaning position, and clean the first sub-filter 201 at the cleaning position. Alternatively, the driving device 30 is drivingly connected to the second sub-filter 202 to drive the second sub-filter 202 to move to the cleaning position, and clean the second sub-filter 202 at the cleaning position. Alternatively, the driving device 30 is drivingly connected to both the first sub-filter 201 and the second sub-filter 202 to drive the first sub-filter 201 and the second sub-filter 202 to move to the cleaning position, and clean the first sub-filter 201 and the second sub-filter 202 at the cleaning position.

[0033] Alternatively, if Figures 1 to 3 As shown, the first sub-filter 201 is located at the front side or the rear side of the second sub-filter 202 .

[0034] The filter 20 is divided into a first filter 20 and a second sub-filter 202 arranged in the front-to-back direction, so that the first sub-filter 201 and the second sub-filter 202 have a smaller size in the front-to-back direction (width direction). Considering that the heat exchanger is not a completely planar structure, the size of the first sub-filter 201 and the second sub-filter 202 in the front-to-back direction is reduced to be smaller, so that the driving device 30 can easily drive the first sub-filter 201 and the second sub-filter 202 to be close to the heat exchanger, and it is especially easy to realize that the driving device 30 synchronously drives the first sub-filter 201 and the second sub-filter 202 to reciprocate between the cleaning position and the working position, thereby simplifying the structure of the driving device 30 and reducing the cost of the air conditioner.

[0035] The first sub-filter 201 is located at the front side of the second sub-filter 202, which means that the first sub-filter 201 can be located at the front side or the oblique front side of the second sub-filter 202; the first sub-filter 201 is located at the rear side of the second sub-filter 202, which means that the first sub-filter 201 can be located at the rear side or the oblique rear side of the second sub-filter 202.

[0036] For example, the driving device 30 is driven and connected to the first sub-filter 201 and the second sub-filter 202. The heat exchanger is mostly in a three-fold form, and the filter 20 is divided into the first filter 20 and the second sub-filter 202 arranged along the front and rear directions. In the cleaning position, the one of the first sub-filter 201 and the second sub-filter 202 located on the front side can be abutted against the fin of the front heat exchanger, and the one of the first sub-filter 201 and the second sub-filter 202 located on the rear side can be abutted against the fin of the rear heat exchanger, ensuring that the filter 20 can be abutted against the heat exchanger in the cleaning position.

[0037] It is understandable that, in addition to “the first sub-filter 201 is located at the front side or the rear side of the second sub-filter 202 ”, the first sub-filter 201 can also be located at other positions of the second sub-filter 202 , for example, the first sub-filter 201 is located at the left side or the right side of the second sub-filter 202 .

[0038] Optionally, the heat exchanger includes a first heat exchange section and a second heat exchange section. The second heat exchange section is connected to the first heat exchange section, and a fold is formed at the connection; wherein the first sub-filter 201 corresponds to and matches the first heat exchange section, and the second sub-filter 202 corresponds to and matches the second heat exchange section.

[0039] The first heat exchange section and the second heat exchange section are arranged along the front-to-back direction of the air conditioner, and the first heat exchange section is located at the front side or the rear side of the second heat exchange section. The first sub-filter 201 corresponds to the first heat exchange section, and in the cleaning position, the first filter 20 is close to the first sub-heat exchange section, and the second sub-filter 202 corresponds to the second heat exchange section, and in the cleaning position, the second filter 20 is close to the second sub-heat exchange section.

[0040] The first sub-filter 201 corresponds to the first heat exchange section, and the second sub-filter 202 corresponds to the second heat exchange section. The contact area between the first sub-filter 201 and the heat exchanger and the contact area between the second sub-filter 202 and the heat exchanger at the cleaning position can be increased, thereby enhancing the cleaning effect of the first sub-filter 201 and the second sub-filter 202.

[0041] Optionally, the first sub-filter 201 is adapted to the shape and size of the first heat exchange section, and the second sub-filter 202 is adapted to the shape and size of the second heat exchange section, so that at the cleaning position, the first sub-filter 201 and the second sub-filter 202 can be fully cleaned.

[0042] Optionally, the driving device 30 is drivingly connected to both the first sub-filter screen 201 and the second sub-filter screen 202 to drive the first sub-filter screen 201 and the second sub-filter screen 202 to move synchronously.

[0043] The driving device 30 synchronously drives the first sub-filter 201 and the second sub-filter 202 to move, which can achieve synchronous cleaning of the first sub-filter 201 and the second sub-filter 202, avoiding the need to clean the first sub-filter 201 and the second sub-filter 202 separately, thereby simplifying the cleaning steps of the first sub-filter 201 and the second sub-filter 202.

[0044] It can be understood that the same driving device 30 can be drivingly connected to both the first sub-filter 201 and the second sub-filter 202, driving the first sub-filter 201 and the second sub-filter 202 to move synchronously. Alternatively, there can be multiple driving devices 30, including a first driving device 30 and a second driving device 30, wherein the first driving device 30 is drivingly connected to the first sub-filter 201, driving the first sub-filter 201 to reciprocate between the cleaning position and the working position; and the second driving device 30 is drivingly connected to the second sub-filter 202, driving the second sub-filter 202 to reciprocate between the cleaning position and the working position.

[0045] Optionally, the driving device 30 includes a driver 301, and the driver 301 is configured to drive the first sub-filter 201 and / or the second sub-filter 202 to rotate to a cleaning position.

[0046] The specific form of the driving connection between the driving device 30 and the first sub-filter 201 and / or the second sub-filter 202 is that the driving device 30 drives the first sub-filter 201 and / or the second sub-filter 202 to rotate, so that the first sub-filter 201 and / or the second sub-filter 202 reciprocates between the cleaning position and the working position, and the driving method is simple and reliable.

[0047] The driver 301 may be an electric motor or a motor, and the power output shaft of the driver 301 may be directly connected to the first sub-filter 201 and / or the second sub-filter 202, driving the first sub-filter 201 and / or the second sub-filter 202 to rotate, so that the first sub-filter 201 and / or the second sub-filter 202 reciprocate between the cleaning position and the working position. Alternatively, the power output shaft of the driver 301 may also be indirectly connected to the first sub-filter 201 and / or the second sub-filter 202, driving the first sub-filter 201 and / or the second sub-filter 202 to rotate, so that the first sub-filter 201 and / or the second sub-filter 202 reciprocate between the cleaning position and the working position.

[0048] In addition to driving the first sub-filter 201 and / or the second sub-filter 202 to rotate, the driver 301 may also drive the first sub-filter 201 and / or the second sub-filter 202 to slide or perform other movements.

[0049] Optionally, the driving device 30 further includes a first gear 302 and a second gear 303 .

[0050] The first gear 302 is drivingly connected to the power output shaft of the driver and is connected to the first sub-filter 201 ; the second gear 303 is meshed with the first gear 302 and is connected to the second sub-filter 202 .

[0051] Taking the driver as a motor as an example, the output shaft of the motor drives the first gear 302 to rotate, the first gear 302 drives the first sub-filter 201 to rotate, and drives the second gear 303 to rotate, and the second gear 303 drives the second sub-filter 202 to rotate, thereby realizing the synchronous movement of the first sub-filter 201 and the second sub-filter 202, and realizing the synchronous cleaning of the first sub-filter 201 and the second sub-filter and resetting to the working position.

[0052] like Figure 4 As shown, the driving device 30 also includes a gear box 304, in which the first gear 302 and the second gear 303 are located. A limiting mechanism is provided in the gear box 304, and the limiting mechanism cooperates with the first gear 302 and the second gear 303 to fix and limit the first gear 302 and the second gear 303 to prevent the first gear 302 and the second gear 303 from escaping from the gear box 304.

[0053] The first sub-filter 201 includes a first sub-filter body 2011 and a first rotating shaft 2012. The first rotating shaft 2012 is arranged on a side of the first sub-filter body 2011 close to the first rotating shaft 2012. The first rotating shaft 2012 penetrates the first sub-filter body 2011 along the length direction (left-right direction) of the first sub-filter body 2011 and extends out of the first sub-filter body 2011 along the length direction of the first sub-filter body 2011. The portion of the first rotating shaft 2012 extending out of the first sub-filter body 2011 is connected to the first gear 302. The first gear 302 drives the first rotating shaft 2012 to rotate, thereby driving the first sub-filter body 2011 to rotate.

[0054] The second sub-filter 202 includes a second sub-filter body 2021 and a second rotating shaft 2022. The second rotating shaft 2022 is arranged on a side of the second sub-filter body 2021 close to the second rotating shaft 2022. The second rotating shaft 2022 penetrates the second sub-filter body 2021 along the length direction (left-right direction) of the second sub-filter body 2021 and extends out of the second sub-filter body 2021 along the length direction of the second sub-filter body 2021. The portion of the second rotating shaft 2022 extending out of the second sub-filter body 2021 is connected to the second gear 303. The second gear 303 drives the second rotating shaft 2022 to rotate, thereby driving the second sub-filter body 2021 to rotate. The first rotating shaft and the second rotating shaft are parallel to each other.

[0055] Optionally, the driving device 30 is connected to the filter screen 20 in the length direction (such as Figures 1 to 3In other words, the driving device 30 is arranged on the left side and / or the right side of the first sub-filter 201 and the second sub-filter 202, so that the driving device 30 does not affect the setting of the first sub-filter 201 and the second sub-filter 202, and will not cause position interference with the first sub-filter 201 and the second sub-filter 202.

[0056] Optionally, the driving device 30 is disposed between the first sub-filter 201 and the second sub-filter 202 , so that the driving device 30 can be simultaneously connected to the first sub-filter 201 and the second sub-filter 202 to achieve synchronous driving of the first sub-filter 201 and the second sub-filter 202 .

[0057] Optionally, the number of the driving device 30 is one or more. When the number of the driving device 30 is more than one, the plurality of driving devices 30 are disposed on opposite sides of the filter screen 20. Figures 1 to 3 As shown, there are two driving devices 30, which are respectively located on the left and right sides of the first sub-filter 201 and the second sub-filter 202, so that the first sub-filter 201 and the second sub-filter 202 can move smoothly between the working position and the cleaning position.

[0058] Optionally, the driving device 30 drives forward or reversely to drive the first sub-filter 201 and / or the second sub-filter 202 to reciprocate between the cleaning position and the working position; wherein, in the working position, the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger is greater than the distance between the first sub-filter 201 and / or the second sub-filter 202 and the heat exchanger in the cleaning position.

[0059] The driving device 30 is driven forward or reversely. Taking the driving device 30 including a motor as an example, the forward drive and reverse drive refer to the output shaft of the motor rotating forward or reversely, thereby driving the first sub-filter 201 and / or the second sub-filter 202 to reciprocate between the cleaning position and the working position.

[0060] Taking the example that the driving device 30 is driven and connected with the first sub-filter 201 and the second sub-filter 202, when the driving device 30 is driven in the forward direction, the first sub-filter 201 and the second sub-filter 202 are driven to approach the heat exchanger, and when the driving device 30 is driven in the reverse direction, the first sub-filter 201 and the second sub-filter 202 are driven away from the heat exchanger, so as to drive the first sub-filter 201 and the second sub-filter 202 to reciprocate between the cleaning position and the working position. Taking the example that the filter 20 is located above the heat exchanger, the driving device 30 is driven in the forward direction, driving the first sub-filter 201 and the second sub-filter 202 to move downward to the cleaning position, and when the driving device 30 is driven in the reverse direction, driving the first sub-filter 201 and the second sub-filter 202 to move upward, the first sub-filter 201 and the second sub-filter 202 are separated from the heat exchanger and move to the working position.

[0061] When the first sub-filter 201 and the second sub-filter 202 need to be cleaned, the first sub-filter 201 and the second sub-filter 202 are driven to move to the cleaning position by the driving device 30, and the first sub-filter 201 and the second sub-filter 202 are cleaned at the cleaning position. After the filter 20 is cleaned, the driving device 30 drives the first sub-filter 201 and the second sub-filter 202 to move to the working position, and the first sub-filter 201 and the second sub-filter 202 are separated from the heat exchanger at the working position. In other words, the first sub-filter 201 and the second sub-filter 202 are not in contact with the heat exchanger at the working position, thereby reducing the air intake resistance when the air conditioner is working normally, and avoiding the increase of wind resistance due to the first sub-filter 201 and the second sub-filter 202 being attached to the surface of the heat exchanger when the air conditioner is cooling or heating normally.

[0062] In the working position, the first sub-filter 201 and the second sub-filter 202 are arranged in parallel. The first sub-filter 201 and the second sub-filter 202 can be located on the same plane or on mutually parallel planes. In the working position, the orthographic projection of the filter 20 on the return air outlet of the air conditioner completely covers the return air outlet, so that the air entering the air conditioner from the return air outlet needs to be filtered by the filter 20.

[0063] like Figure 1 and Figure 2As shown, the structure for self-cleaning the air conditioner filter screen also includes a fixed structure 305, and the fixed structure 305 is used to fix the driver 301 on the air conditioner body, for example, fixed on the housing 10. The fixed structure 305 can be in a plate shape or a block shape or an arbitrary shape, and the fixed structure 305 is fixedly connected to the driver 301 and is fixedly connected to the air conditioner body. The fixed structure 305 can be snap-fitted or welded or bonded or connected to the driver 301 by a fastener, and the fixed structure 305 can be snap-fitted or welded or bonded or connected to the air conditioner body by a fastener. Optionally, the fixed structure 305 is located between the driver 301 and the gear box 304.

[0064] The gear box 304 is fixed on the fixed structure 305 or on the air conditioner body. When the gear box 304 is fixed on the fixed structure 305, the gear box 304 and the fixed structure 305 are snap-fitted, welded, bonded, or connected via fasteners; when the gear box 304 is fixed on the air conditioner body, the gear box 304 and the air conditioner body are snap-fitted, welded, bonded, or connected via fasteners.

[0065] The number of the fixed structure 305, the first gear 302, the second gear 303 and the gear box 304 corresponds to the number of the driver 301. Figures 1 to 3 As shown, the number of the driving devices 30 is two, and the number of the drivers 301 , the fixing structures 305 , the first gears 302 , the second gears 303 and the gear boxes 304 are all two.

[0066] Optionally, the filter screen 20 is a rigid filter screen, such as a metal filter screen or a hard plastic filter screen. Setting the filter screen 20 as a rigid filter screen can enhance the anti-deformation ability of the filter screen 20, so that the drive device 30 can drive the filter screen 20 to move between the working position and the cleaning position without deformation of the filter screen 20, and in the cleaning position, the rigid filter screen 20 enables the filter screen 20 to firmly adhere to the surface of the heat exchanger.

[0067] The filter 20 includes a frame and a filter body. The filter body is a mesh structure for filtering air. The filter body is arranged on the frame. Optionally, the frame is a rigid frame for supporting the filter body and enhancing the rigidity of the filter 20. The filter body is a rigid filter body or a flexible filter body.

[0068] The first sub-filter 201 is a rigid first sub-filter, which is made of metal and / or hard plastic. The first filter body 2011 includes a first sub-filter frame and a first sub-filter body, the first sub-filter body is a mesh structure, and is used to filter air. The first sub-filter body is arranged on the first sub-filter frame. Optionally, the first sub-filter frame is a rigid frame, and is used to support the first sub-filter body, and enhance the rigidity of the first sub-filter 201. The first sub-filter body is a rigid filter body or a flexible filter body.

[0069] The second sub-filter 202 is a rigid second sub-filter, which is made of metal and / or hard plastic. The second filter body 2021 includes a second sub-filter frame and a second sub-filter body. The second sub-filter body is a mesh structure for filtering air. The second sub-filter body is arranged on the second sub-filter frame. Optionally, the second sub-filter frame is a rigid frame for supporting the second sub-filter body and enhancing the rigidity of the second sub-filter 202. The second sub-filter body is a rigid filter body or a flexible filter body. The frame includes a first sub-filter frame and a second sub-filter frame, and the filter body includes a first sub-filter 201 body and a second sub-filter body.

[0070] Optionally, the filter 20 also includes a third sub-filter, which is arranged between the first sub-filter 201 and the second sub-filter 202, and is used to filter the air flowing between the first sub-filter 201 and the second filter 20, so that in the working position, the filter 20's positive projection on the return air outlet completely covers the return air outlet.

[0071] Optionally, the filter 20 may further include a fourth sub-filter, a fifth sub-filter, etc. In the working position, the first sub-filter 201, the second sub-filter 202, etc. are assembled to form the filter 20, which completely covers the return air outlet.

[0072] An embodiment of the present disclosure provides an air conditioner, comprising a heat exchanger and a structure for self-cleaning of an air conditioner filter as in any one of the above embodiments, wherein the filter 20 is arranged on one side of the heat exchanger.

[0073] The air conditioner provided in the embodiment of the present disclosure includes the structure for self-cleaning of the air conditioner filter in any of the above embodiments, and thus has all the beneficial effects of the structure for self-cleaning of the air conditioner filter in any of the above embodiments, which will not be repeated here.

[0074] Optionally, the air conditioner also includes a controller, which is connected to the drive device 30 and is configured to respond to a cleaning instruction for cleaning the filter 20, control the drive device 30 to drive the first sub-filter 201 and / or the second sub-filter 202 to move to a cleaning position, and drive the first sub-filter 201 and / or the second sub-filter 202 to move to a working position after frost and defrosting on the heat exchanger surface.

[0075] The controller is used to control the operation of the driving device 30 to adjust the position of the first sub-filter 201 and / or the second sub-filter 202 relative to the heat exchanger. Take the example that the driving device 30 is driven and connected to both the first sub-filter 201 and the second sub-filter 202. When receiving a cleaning instruction to clean the filter 20, in response to the cleaning instruction to clean the filter 20, the controller controls the driving device 30 to operate and drives the first sub-filter 201 and the second sub-filter 202 to the cleaning position. And the controller controls the air conditioner to run in cooling mode. Optionally, at this time, the air outlet is closed to prevent the cooling mode from affecting the indoor temperature. The heat exchanger is frosted to dissipate the cold and frost to the surface of the filter 20. The accumulation of frost layer thickness ensures that frost forms on the surface of the first sub-filter 201 and the second sub-filter 202. The frost formation process will squeeze the dust on the surface of the first sub-filter 201 and the second sub-filter 202, and finally squeeze the dust on the surface of the first sub-filter 201 and the second sub-filter 202, loosen the dust on the first sub-filter 201 and the second sub-filter 202, and reduce the adhesion of dust on the first sub-filter 201 and the second sub-filter 202. The rear controller controls the air conditioner to run in heating mode. Optionally, the air outlet is closed at this time to prevent the heating mode from affecting the indoor temperature. The heat exchanger defrosts, and the frost layer forms a water flow to wash the dust on the surface of the first sub-filter 201 and the second sub-filter 202, and take away the dust on the first sub-filter 201, the second sub-filter 202 and the surface of the heat exchanger. The dust-carrying water flows into the water collecting box and is discharged to the outside through the drain pipe. The cleaning of the first sub-filter 201 and the second sub-filter 202 is completed once; after the cleaning is completed, the driving device 30 resets the first sub-filter 201 and the second sub-filter 202 to the working position, and a filter 20 cleaning action is completed at this time.

[0076] In a specific embodiment, taking the example that the driving device 30 includes a motor, a first gear 302 and a second gear 303, and the filter is located above the heat exchanger, the air conditioner includes a compressor, and the operating stages of the air conditioner include a normal operating stage and a self-cleaning stage. In the normal operating stage, the filter 20 (the first sub-filter 201 and the second sub-filter 202) are in the working position, and in the self-cleaning stage, the filter 20 (the first sub-filter 201 and the second sub-filter 202) are in the cleaning position. When the filter 20 starts to self-clean, the fan and the compressor stop running, the first sub-filter 201 and the second sub-filter 202 are in the working position, and the first sub-filter 201 and the second sub-filter 202 are in the same plane and completely cover the return air outlet position, and are separated from the heat exchanger. When the whole machine receives the user's cleaning instruction to clean the filter 20, the fan and the compressor stop running, the motor starts to drive the first gear 302 to rotate, and the first gear 302 drives the second gear 303 to rotate, thereby driving the first sub-filter 201 and the second sub-filter 202 to start rotating downward, rotate to the surface position of the heat exchanger, and further adhere to it. The first sub-filter 201 and the second sub-filter 202 are attached to the surface of the heat exchanger, and the compressor starts to run to frost the heat exchanger. Subsequently, frost begins to form on the surfaces of the first sub-filter 201 and the second sub-filter 202. When the frost layer reaches a certain thickness, defrosting is performed. Finally, the first sub-filter 201, the second sub-filter 202 and the heat exchanger are cleaned at the same time. After cleaning, they are reset, and the first gear 302 and the second gear 303 start to reverse. The first sub-filter 201 and the second sub-filter 202 rotate upward and are separated from the heat exchanger, and finally reach the limit and return to the working position, and finally the self-cleaning process of the filter 20 is completed.

[0077] In the present application, the cleaning of the filter 20 is achieved by controlling the driving device 30 through the controller, and the traditional mechanical cleaning of the filter 20 is abandoned. Instead, the frost and defrosting of the heat exchanger is used to drive the frost and defrosting of the surface of the filter 20 (the first sub-filter 201 and the second sub-filter 202) so that the surface of the filter 20 (the first sub-filter 201 and the second sub-filter 202) can be cleaned. The present application can remove the dust collection and dust collection box, and the dust is directly discharged to the outside through the water collection box and the drain pipe, ensuring that the user does not need to take any extra actions, which is simple and convenient; and a rigid filter 20 is used, so that the first sub-filter 201 and the second sub-filter 202 can be better attached to the surface of the heat exchanger in the cleaning position, so that the cleaning effect of the first sub-filter 201 and the second sub-filter 202 is better.

[0078] To summarize, in the present application, the surface of the filter 20 (the first sub-filter 201 and the second sub-filter 202) is cleaned by frosting and defrosting the filter 20 (the first sub-filter 201 and the second sub-filter 202), and the cleaning process is completed simultaneously with the cleaning process of the surface of the heat exchanger (the first sub-filter 201 and the second sub-filter 202), which is simple and quick. The dust on the surface of the filter 20 (the first sub-filter 201 and the second sub-filter 202) is cleaned by frosting and defrosting. When the surface of the filter 20 (the first sub-filter 201 and the second sub-filter 202) needs to be cleaned, the filter 20 (the first sub-filter 201 and the second sub-filter 202) is driven to move to the cleaning position. The filter 20 (the first sub-filter 201 and the second sub-filter 202) is tightly attached to the heat exchanger according to the shape of the outer surface of the heat exchanger to ensure the spread of the frost layer. Finally, the dust on the surface of the filter 20 (the first sub-filter 201 and the second sub-filter 202) is washed and sterilized through frosting and defrosting. Finally, the defrosted water melts and flows to the water receiving tray and then flows to the outdoors without the need for user action. Moreover, the driving device 30 has a simple and reliable structure. The first gear 302 and the second gear 303 are limited by a limiting structure to prevent the first gear 302 and the second gear 303 from escaping from the gear box 304, which is easier to repair and disassemble. A rigid filter screen 20 is used, which can be completely attached to the surface of the heat exchanger. The user is convenient to use and can quickly clean the filter screen 20. The cleaning effect is good, the reliability is high, and the material consumption of the filter screen 20 is reduced. The structure for self-cleaning the air conditioner filter screen occupies a small space, does not affect the air intake and outlet air volume of the air conditioner, does not increase the thickness of the whole machine, does not affect the appearance, and is easy to assemble and disassemble.

[0079] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A structure for self-cleaning of air conditioner filter, characterized in that: include: A filter, comprising a first sub-filter and a second sub-filter; and A driving device is drivingly connected to the first sub-filter and / or the second sub-filter, and is configured to drive the first sub-filter and / or the second sub-filter to move toward a direction close to the heat exchanger of the air conditioner so as to move to a cleaning position close to the heat exchanger. The heat exchanger is frosted so that frost forms on the surface of the first sub-filter and / or the second sub-filter located at the cleaning position. The heat exchanger is then used to defrost, and the frost layer forms a water flow to wash away dust on the surface of the first sub-filter and / or the second sub-filter.

2. The structure according to claim 1, characterized in that: The heat exchanger comprises: a first heat exchange section; and A second heat exchange section is connected to the first heat exchange section, and a fold is formed at the connection; Wherein, the first sub-filter is arranged corresponding to the first heat exchange section, and the second sub-filter is arranged corresponding to the second heat exchange section.

3. The structure according to claim 1, characterized in that: The driving device is drivingly connected to both the first sub-filter screen and the second sub-filter screen to drive the first sub-filter screen and the second sub-filter screen to move synchronously.

4. The structure according to claim 1, characterized in that The driving device comprises: The driver is configured to drive the first sub-filter and / or the second sub-filter to rotate to the cleaning position.

5. The structure according to claim 4, characterized in that: The driving device further comprises: a first gear, drivingly connected to the power output shaft of the driver and connected to the first sub-filter; and The second gear is meshed with the first gear and connected with the second sub-filter.

6. The structure according to claim 1, characterized in that The driving device is connected to at least one end of the filter screen in the length direction.

7. The structure according to any one of claims 1 to 6, characterized in that The driving device is further configured to drive the first sub-filter and / or the second sub-filter to move to a working position away from the heat exchanger; Wherein, in the working position, the first sub-filter and the second sub-filter are parallel to each other, and the orthographic projection of the filter on the return air outlet of the air conditioner completely covers the return air outlet.

8. The structure according to any one of claims 1 to 6, characterized in that The filter screen is a rigid filter screen.

9. An air conditioner, characterized in that: include: Heat exchanger; and According to the structure for self-cleaning of the air conditioner filter as claimed in any one of claims 1 to 8, the filter is arranged on one side of the heat exchanger.

10. The air conditioner according to claim 9, characterized in that: Also includes: The controller is connected to the driving device and is configured to respond to a cleaning instruction for cleaning the filter, control the driving device to drive the first sub-filter and / or the second sub-filter to move to a cleaning position, and drive the first sub-filter and / or the second sub-filter to move to a working position after frost and defrost on the surface of the heat exchanger.

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