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. The filter comprises: a filter comprising a fixed portion and a movable portion connected to each other, the fixed portion being configured to be fixed to the air conditioner body; a driving device, which is drivingly connected to the movable portion and is configured to drive the movable portion to move in a direction close to the heat exchanger of the air conditioner, so that the filter moves to a cleaning position against the heat exchanger. In the cleaning position, since the filter is against the surface of the heat exchanger, the filter can be cleaned while the heat exchanger is being cleaned. 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, wherein the air conditioner comprises an air conditioner body, and the structure comprises: a filter comprising a fixed portion and a movable portion connected to each other, wherein the fixed portion is configured to be fixed to the air conditioner body; and a driving device, which is drivingly connected to the movable portion and is configured to drive the movable portion to move toward a direction close to a heat exchanger of the air conditioner so as to move the filter 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: an air conditioner body including a heat exchanger; 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 moving part of the filter to move in the direction close to the heat exchanger and move to the cleaning position. In the cleaning position, since the filter is in contact with the surface of the heat exchanger (i.e., the filter is in contact with the heat exchanger), the filter can be cleaned while the heat exchanger is being cleaned. In other words, the cleaning of the filter and the cleaning of the heat exchanger are carried out simultaneously. On the one hand, the fixed part of the filter is fixed to the air conditioner body, and the driving device drives the moving part to move to clean the filter. The structure is simple, avoiding the disadvantage of the existing mechanical cleaning method that causes the thickness of the air conditioner to increase, and at the same time avoiding the disadvantage of the rotating shaft cleaning method having a large requirement for the amount of condensed water and the high noise of the ultrasonic method; 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 carried out 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 structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure from a first perspective;

[0013] Figure 2 is a structural schematic diagram of an air conditioner from a second viewing angle provided by an embodiment of the present disclosure;

[0014] Figure 3 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure from a third perspective;

[0015] Figure 4 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure from a fourth viewing angle;

[0016] Figure 5 It is a schematic diagram of the structure of a filter provided in an embodiment of the present disclosure.

[0017] Reference numerals:

[0018] 10 air conditioner body, 20 filter, 201 moving part, 202 fixing part, 30 pressing part, 40 fixing part, 401 first screw hole, 50 heat exchanger, 501 heat exchange tube, 502 end cover, 5021 end cover body, 5022 extension part, 503 vertical heat exchange section, 60 driving device, 601 motor, 602 cover plate, 603 gear, 604 rack, 605 positioning part. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Unless otherwise stated, the term "plurality" means two or more.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] The air conditioner includes an air conditioner body 10 and a structure for self-cleaning of the air conditioner filter. The air conditioner body 10 includes a heat exchanger 50, a wind wheel or a fan and a housing. The structure for self-cleaning of the air conditioner filter includes a filter 20, which is arranged on one side of the heat exchanger 50, for example, the filter 20 is arranged above the heat exchanger 50. The housing defines an installation space, and the heat exchanger 50, the filter 20, the wind wheel or the fan are arranged in the installation space. The housing is provided with an air outlet connected to the installation space. Under the action of the wind wheel or the fan, the air passes through the filter 20 and the heat exchanger 50 in sequence and is blown out through the air outlet.

[0028] The structure for self-cleaning the filter of the air conditioner comprises a filter 20 and a driving device 60 , and the filter 20 is used to filter the air flowing through the filter 20 .

[0029] like Figure 1 and Figure 2 As shown, the filter 20 includes a fixed portion 202 and a movable portion 201 connected to each other. The fixed portion 202 is suitable for being fixed to the air conditioner body 10 . The fixed portion 202 can be fixed to the heat exchanger 50 or to the housing or other components of the air conditioner body 10 .

[0030] Alternatively, if Figure 2 As shown, the structure for self-cleaning the air conditioner filter also includes a fixing member 40.

[0031] The fixing member 40 fixedly connects the fixing portion 202 to the air conditioner body 10 , thereby achieving position limiting between the fixing portion 202 and the air conditioner body 10 .

[0032] The driving device 60 is connected to the moving part 201 and is configured to drive the moving part 201 to move toward the heat exchanger 50 of the air conditioner so that the filter 20 moves to a cleaning position close to the heat exchanger 50. Figure 4 The middle filter is in the cleaning position.

[0033] The fixing part 202 is fixed on the air conditioner body 10 , and the moving part 201 moves toward the heat exchanger 50 under the action of the driving device 60 , so that the filter screen 20 moves to the cleaning position under the drive of the driving device 60 .

[0034] Optionally, the fixing member 40 is disposed on the fixing portion 202 for fixing the fixing portion 202 to the air conditioner body 10 .

[0035] Considering that the filter 20 is a mesh structure, it is not convenient to directly fix the filter 20 on the air conditioner body 10 , so the fixing member 40 is provided to facilitate the fixing of the fixing part 202 on the air conditioner body 10 .

[0036] The fixing member 40 extends along the fixing portion 202. For example, if the fixing portion 202 is the front end or the rear end of the filter 20, the fixing member 40 extends along the length direction of the filter 20. Optionally, the fixing member 40 is in the shape of a long strip and runs through the length direction of the filter 20, thereby fixing the entire fixing portion 202 to the air conditioner body 10. The number of fixing members 40 can be one or more. Multiple fixing members 40 are sequentially arranged along the length direction of the filter 20, thereby fixing the entire fixing portion 202 to the air conditioner body 10. Figure 2 As shown, there are two fixing members 40 , which are arranged in sequence along the length direction of the filter screen 20 .

[0037] The fixing member 40 and the air conditioner body 10 can be connected by fasteners, welding, threaded connection, bonding or clamping. The fixing member 40 is arranged on the fixing portion 202. The fixing member 40 is connected or not connected to the fixing portion 202, so as to achieve the fixing of the fixing portion 202 on the air conditioner body 10. Taking the fastener connection as an example, the fixing member 40 is provided with a first screw hole 401, the air conditioner body 10 is provided with a second screw hole, and the fastener (such as a screw or a bolt) passes through the first screw hole 401, the second screw hole and the filter 20, so as to achieve the fixing of the fixing portion 202 on the air conditioner body 10.

[0038] In the cleaning position, the filter 20 and the heat exchanger 50 are close to each other, wherein "close to each other" means that the distance between the filter 20 and the heat exchanger 50 is smaller than the distance between the filter 20 and the heat exchanger 50 when the air conditioner is in normal cooling and heating mode, so "close to each other" includes two situations: the filter 20 at least partially fits the surface of the heat exchanger 50 (that is, the distance between the filter 20 and the heat exchanger 50 is zero) and the distance between the filter 20 and the heat exchanger 50 is small. Among them, the small distance between the filter 20 and the heat exchanger 50 means that the distance between the filter 20 and the heat exchanger 50 is smaller than the distance between the filter 20 and the heat exchanger 50 when the air conditioner is in normal cooling and heating mode. Since the position of the filter 20 when the air conditioner is in normal cooling and heating mode is defined as the working position, the distance between the filter 20 and the heat exchanger 50 when the filter 20 and the heat exchanger 50 are "close to each other" is smaller than the distance between the filter 20 and the heat exchanger 50 in the working position. In other words, when the filter 20 needs to be cleaned, the drive device 60 drives the filter 20 to move toward the heat exchanger 50 and to the cleaning position. After cleaning, the drive device 60 drives the filter 20 to move away from the heat exchanger 50 and to the working position.

[0039] In the cleaning position, the driving device 60 drives the filter 20 to be close to the heat exchanger 50, and the distance between the filter 20 and the heat exchanger 50 is small, especially in the cleaning position, the filter 20 is pressed against the surface of the heat exchanger 50, and the distance between the filter 20 and the heat exchanger 50 is zero. The frosting and defrosting of the heat exchanger 50 can be utilized to achieve the defrosting of the filter 20, so that the filter 20 can be cleaned while the heat exchanger 50 is cleaned, thereby simplifying the cleaning method of the filter 20, improving the cleaning efficiency of the filter 20 and the heat exchanger 50, reducing the user's behavior, and avoiding the disadvantage that the cleaning of the filter 20 and the cleaning of the heat exchanger 50 need to be performed separately.

[0040] Alternatively, if Figure 1 and Figure 2As shown, the fixed portion 202 and the moving portion 201 are two opposite ends of the filter 20. In other words, the fixed portion 202 and the moving portion 201 are arranged relative to each other, so that the moving portion 201 is farther away from the fixed portion 202 and has a stronger movement ability, so that the driving device 60 can easily drive the moving portion 201 to reciprocate between the working position and the cleaning position, thereby reducing the requirements for the driving device 60. It can be understood that the fixed portion 202 and the moving portion 201 may not be two opposite ends of the filter 20, for example, the fixed portion 202 and the moving portion 201 are two adjacent ends on the filter 20.

[0041] Optionally, the fixed portion 202 and the moving portion 201 are two opposite ends of the filter 20 in the width direction, for example, one of the fixed portion 202 and the moving portion 201 is the front end of the filter 20 , and the other is the rear end of the filter 20 .

[0042] The heat exchanger 50 is not a regular planar structure. The fixed portion 202 and the moving portion 201 are arranged at two opposite ends in the width direction of the filter 20 , which can simplify the movement form of the filter 20 and thus simplify the driving device 60 .

[0043] It can be understood that the fixed portion 202 and the moving portion 201 can also be the two end portions of the filter screen 20 in the length direction.

[0044] Alternatively, if Figure 5 As shown, the filter net 20 is a flexible filter net 20 .

[0045] The flexible filter 20 has good deformation ability, so that when the fixed part 202 is fixed to the air conditioner body 10 and the driving device 60 drives the moving part 201 to move, the filter 20 moves to the cleaning position. In other words, the flexible filter 20 can avoid deformation of the filter 20 during the driving process of the moving part 201 by the driving device 60.

[0046] Optionally, the filter screen 20 is a plastic filter screen 20, such as a nylon filter screen 20 or a polyimide filter screen 20. It is understandable that the filter screen 20 can also be a metal filter screen 20 with good deformation ability or a filter screen 20 of other materials.

[0047] It can be understood that the filter screen 20 can also be a rigid filter screen 20 .

[0048] Optionally, the driving device 60 includes a driver, which is drivably connected to the moving part 201 and is configured to drive the moving part 201 to reciprocate between a cleaning position and a working position, wherein the distance between the moving part 201 and the heat exchanger 50 at the working position is greater than the distance between the moving part 201 and the heat exchanger 50 at the cleaning position.

[0049] The driver drives forward or reversely, thereby driving the filter 20 to approach or move away from the heat exchanger 50, realizing the reciprocating motion of the filter 20. Specifically, the driving device 60 drives the filter 20 to reciprocate between the cleaning position and the working position. Taking the filter 20 located above the heat exchanger 50 as an example, the driving device 60 drives forward to drive the filter 20 to move downward to the cleaning position. When the driving device 60 drives reversely, it drives the filter 20 to move upward, and the filter 20 is separated from the heat exchanger 50 and moves to the working position.

[0050] When the filter 20 needs to be cleaned, the filter 20 is driven to move to the cleaning position by the driving device 60, and the filter 20 is cleaned at the cleaning position. After the filter 20 is cleaned, the driving device 60 drives the filter 20 to move to the working position, where the filter 20 is separated from the heat exchanger 50. In other words, the filter 20 and the heat exchanger 50 are not in contact 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 filter 20 being attached to the surface of the heat exchanger 50 when the air conditioner is cooling or heating normally.

[0051] The number of the driving devices 60 is one or more. When the number of the driving devices 60 is multiple, the multiple driving devices 60 are respectively arranged on two opposite sides of the moving part 201. The multiple driving devices 60 drive the moving part 201 to achieve smooth movement of all parts of the moving part 201.

[0052] like Figure 1 and Figure 2 As shown, there are two driving devices 60 , the moving portion 201 is the front end portion of the filter 20 , and the two driving devices 60 are respectively arranged on the left and right sides of the filter 20 .

[0053] Alternatively, if Figure 3 and Figure 4 As shown, the heat exchanger 50 includes a heat exchange tube 501 and an end cover 502. The end cover 502 includes an end cover body 5021 and an extension part 5022 connected to each other. The heat exchange tube 501 is arranged on the end cover body 5021, and the driving device 60 is arranged on the extension part 5022.

[0054] The refrigerant flows in the heat exchange tube 501, and the end cover body 5021 covers the heat exchange tube 501. The end cover body 5021 extends toward the direction close to the drive device 60 to form an extension portion 5022, and the drive device 60 is arranged on the extension portion 5022. In other words, the extension portion 5022 provides a mounting platform for the drive device 60. For example, the drive device 60 includes a motor 601, and the extension portion 5022 is plate-shaped, and the motor 601 is fixed on the extension portion 5022. The drive device 60 is fixed on the extension portion 5022 by fasteners, welding, threaded connection, bonding, or clamping.

[0055] Regarding the structure of the driving device 60, Figure 4 As shown, in the first specific embodiment, the driving device 60 includes a driver (such as a motor 601 or a motor), a gear 603 and a rack 604. Taking the driver as the motor 601 as an example, the gear 603 is drivingly connected to the output shaft of the motor 601; the rack 604 is arranged on the moving part 201 and meshes with the gear 603.

[0056] like Figure 1 and Figure 2 As shown, there are two motors 601, which are respectively located on the left and right sides of the filter screen 20. The left and right ends of the end cover body 5021 extend upward to form two extensions 5022, and the two motors 601 are respectively fixed on the two extensions 5022. The output shaft of the motor 601 is connected to the gear 603, the gear 603 is meshed with the rack 604, the rack 604 is fixedly connected to the pressing member 30, and the pressing member 30 is connected to the moving part 201. The motor 601 drives the gear 603 to rotate, the gear 603 is meshed with the rack 604, and the pressing member 30 drives the rack 604 to move along a straight line or a curve. The pressing member 30 moves with the rack 604, thereby driving the moving part 201 to move with the rack 604.

[0057] The structure for self-cleaning the air conditioner filter also includes a cover plate 602. The cover plate 602 defines an installation space. The gear 603 and the rack 604 are arranged in the installation space. The cover plate 602 fixes the gear 603 and the rack 604, and provides guidance and limitation for the movement of the rack 604 to ensure that the filter 20 can be pressed tightly against the surface of the heat exchanger 50 when the filter 20 is cleaned. In normal use, that is, in the working position, the cover plate 602 ensures that the filter 20 is separated from the surface of the heat exchanger 50 to prevent the filter 20 from being soaked in condensed water for a long time. The structure for self-cleaning the air conditioner filter also includes a guiding mechanism and / or a limiting mechanism. The guiding mechanism includes a guiding groove arranged on the cover plate 602. The rack 604 is arranged in the guiding groove. The rack 604 slides relative to the guiding groove under the drive of the gear 603. The guide groove provides a guiding effect for the movement of the rack 604. The limiting mechanism is arranged on the cover plate 602 and cooperates with the rack 604 to prevent the rack 604 from sliding out of the cover plate 602 or the guiding mechanism. Figure 4 As shown, the limiting mechanism can realize the sliding direction of the rack 604 ( Figure 4 The limit mechanism can also limit the left and right movement positions of the rack 604 during the sliding process, that is, limit the left and right movement positions of the rack 604. When the rack 604 moves to the left movement position, the filter 20 is in the cleaning position, and when the rack 604 moves to the right movement position, the filter 20 is in the working position. Figure 4 The rack 604 is limited in the upper and lower directions to prevent it from moving in the upper and lower directions.

[0058] The cover plate 602, the guide mechanism and the limit mechanism are provided so that the rack 604 is limited in the upper and lower directions, and the gear 603 and the rack 604 are easier to repair and disassemble.

[0059] The structure for self-cleaning the air conditioner filter also includes a positioning member 605. The positioning member 605 can be made of metal (such as sheet metal) or plastic. The positioning member 605 fixes the cover plate 602 to the air conditioner body 10, for example, to the extension portion 5022. The positioning member 605 can fix the cover plate 602 to the air conditioner body 10 by welding, fastener connection, threaded connection, bonding, or clamping. The clamping member 30 is connected to one end of the flexible filter 20 and can drive the filter 20 to move up and down in parallel, ensuring the compression and separation of the filter 20 and the heat exchanger 50, so that the filter 20 can reciprocate between the cleaning position and the working position. Figure 2 As shown, the positioning member cover is arranged on the side of the cover plate away from the heat exchanger, the positioning member is U-shaped to define a positioning space with an opening toward the heat exchanger, the cover plate is located in the positioning space, and both ends of the positioning member are fixed to the air conditioner body.

[0060] like Figure 4 As shown, the heat exchanger 50 includes a vertical heat exchange section 503, which is located at the front end of the air conditioner body 10 ( Figure 4 The left side of the middle part of the filter 20 corresponds to the front end of the filter screen 20, and the vertical heat exchange section 503 is vertically arranged. In the cleaning position, the cover plate 602 and the rack 604 are arranged close to the vertical heat exchange section. There is a non-zero angle between the cover plate 602 and the rack 604 and the vertical direction. In other words, the cover plate 602 and the rack 604 are inclined to avoid interference between the rack 604 and the vertical heat exchange section.

[0061] In the second specific embodiment, the driving device 60 includes a driver (such as a motor 601 or a motor), a lead screw and a nut. Taking the driver as the motor 601 as an example, the lead screw is drivingly connected to the output shaft of the motor 601; the nut is sleeved on the lead screw and connected to the moving part 201.

[0062] The output shaft of the motor 601 drives the screw to rotate, and the rotation of the screw realizes the linear motion of the nut. The nut is connected to the clamping piece 30. The linear motion of the nut drives the clamping piece 30 to move linearly, thereby driving the moving part 201 to move linearly, realizing the reciprocating motion of the filter screen 20 between the cleaning position and the working position.

[0063] In the third specific embodiment, the driving device 60 includes a driver (such as a motor 601 or a motor), a connecting rod, a guide rod and a slider. Taking the driver as the motor 601 as an example, the connecting rod is drivingly connected to the output shaft of the motor 601; the guide rod is provided with a guide groove; the slider is slidably arranged in the guide groove, is rotatably connected to the connecting rod, and is drivingly connected to the moving part 201.

[0064] The output shaft of the motor 601 drives the connecting rod to move, the connecting rod drives the slider to slide in the guide groove, the connecting rod is connected to the clamping member 30, the connecting rod drives the clamping member 30 to move, thereby driving the moving part 201 to reciprocate between the cleaning position and the working position.

[0065] In the fourth specific embodiment, the driving device 60 includes a retractable push-pull portion, which is drivingly connected to the moving portion 201 .

[0066] The push-pull part is connected to the pressing member 30, and the extension and contraction of the push-pull part drives the pressing member 30 to move, thereby driving the moving part 201 to move. The driving device 60 can be a linear motor 601, an electric push rod or an electromagnetic push rod.

[0067] In the fifth specific embodiment, the driving device 60 includes a first magnetic attraction member and a second magnetic attraction member. The first magnetic attraction member is configured to be disposed on the heat exchanger 50; the second magnetic attraction member is disposed on the filter 20 and can attract the first magnetic attraction member to move the filter 20 assembly to the cleaning position.

[0068] Optionally, the driving device 60 further includes a reset mechanism, which includes an elastic member, which may be a spring, a torsion spring, rubber or silicone, etc. One of the first magnetic attraction member and the second magnetic attraction member is an electromagnet, and the other is a magnetic metal. When the electromagnet is energized, it attracts the magnetic metal and drives the filter 20 to move to the cleaning position, at which time the elastic member is deformed. After the filter 20 is cleaned, the electromagnet is de-energized, and under the action of the elastic member, the filter 20 is reset to the working position.

[0069] There are many forms of the driving device 60, and any driving device 60 that can drive the filter screen 20 to reciprocate between the working position and the cleaning position is within the protection scope of the present application.

[0070] Alternatively, if Figure 1 As shown, the structure for self-cleaning the air conditioner filter also includes a pressing member 30.

[0071] The pressing member 30 is arranged on the moving part 201, and the driving device 60 is drivingly connected to the pressing member 30, so that the driving device 60 is drivingly connected to the moving part 201. In other words, the pressing member 30 is arranged between the driving device 60 and the moving part 201, and the driving device 60 drives the moving part 201 by driving the pressing member 30. When the driving device 60 drives the pressing member 30 to move, the moving part 201 moves with the pressing member 30, so that the driving device 60 drives the filter screen 20 to reciprocate between the cleaning position and the working position.

[0072] A clamping piece 30 is provided. On the one hand, the filter net 20 is a flexible filter net 20, and the clamping piece 30 can enhance the rigidity of the moving part 201, so that when the driving device 60 drives the moving part 201 to move toward or away from the heat exchanger 50, the driving device 60 can drive the entire moving part 201 to move synchronously; on the other hand, the filter net 20 is in a mesh shape, and the driving device 60 is not easy to be directly connected to the filter net 20. The clamping piece 30 is provided, and the driving device 60 is connected to the clamping piece 30 to realize the connection between the driving device 60 and the filter net 20, thereby facilitating the assembly between the driving device 60 and the filter net 20.

[0073] Optionally, the pressing member 30 passes through the filter screen 20 ; and / or, the pressing member 30 is a rigid pressing member 30 .

[0074] The pressing member 30 penetrates the filter 20, so that after the driving device 60 is connected to the pressing member 30, the driving device 60 can synchronously drive the entire filter 20 to move synchronously. It can be understood that the pressing member 30 may not penetrate the filter 20, and the size of the pressing member 30 only needs to meet the requirement that the driving device 60 can drive the entire filter 20 to move synchronously through the pressing member 30. Taking the front end of the filter 20 as an example, the width direction of the filter 20 is defined as the front-to-back direction, and the pressing member 30 can be arranged along the length direction of the filter 20 ( Figure 1 Alternatively, the pressing member 30 may extend along the length direction of the filter 20 but not penetrate the filter 20, for example, the length of the pressing member 30 is shorter than the length of the filter 20. The pressing member 30 is rod-shaped and extends along the length direction of the filter 20.

[0075] The clamping member 30 is a rigid clamping member 30 , or the rigidity of the clamping member 30 is greater than the rigidity of the filter 20 , thereby further enhancing the rigidity of the moving part 201 , so that the driving device 60 can drive the filter 20 to move in parallel toward or away from the heat exchanger 50 .

[0076] Optionally, the pressing member 30 penetrates the filter screen 20 along the length direction of the filter screen 20 .

[0077] Optionally, the driving device 60 includes a driver, which is drivably connected to the moving part 201 and is configured to drive the moving part 201 to reciprocate between a cleaning position and a working position, wherein the distance between the moving part 201 and the heat exchanger 50 at the working position is greater than the distance between the moving part 201 and the heat exchanger 50 at the cleaning position.

[0078] An embodiment of the present disclosure provides an air conditioner, comprising an air conditioner body 10 and a structure for self-cleaning of an air conditioner filter as in any one of the above embodiments, wherein the filter 20 is disposed on one side of a heat exchanger 50 .

[0079] 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.

[0080] Optionally, the air conditioner further includes a controller.

[0081] The controller is connected to the drive device 60 and is configured to respond to a cleaning instruction for cleaning the filter 20, control the drive device 60 to drive the filter 20 to move to a cleaning position, and control the drive device 60 to drive the filter 20 to move to a working position after frost and defrost occur on the surface of the heat exchanger 50.

[0082] The controller is used to control the operation of the driving device 60 to adjust the position of the filter 20 relative to the heat exchanger 50. Specifically, 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 60 to operate and drives the filter 20 to the cleaning position. And the controller controls the air conditioner to operate 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 50 is frosted to dissipate the cold and frost to the surface of the filter 20. The accumulation of frost layer thickness ensures frost on the surface of the filter 20. The frost formation process will squeeze the dust on the surface of the filter 20, and finally squeeze the dust on the surface of the filter 20, loosen the dust on the filter 20, and reduce the adhesion of the dust on the filter 20. Then the controller controls the air conditioner to operate in heating mode. Optionally, at this time, the air outlet is closed to prevent the heating mode from affecting the indoor temperature. The heat exchanger 50 is defrosted. The frost layer forms a water flow to wash the dust on the surface of the filter, and the dust on the surfaces of the filter 20 and the heat exchanger 50 is taken away. The water flow with dust flows into the water receiving box and is discharged to the outside through the drain pipe. The cleaning of the filter 20 is completed once. After the cleaning is completed, the driving device 60 resets the filter 20 to the working position. At this time, a filter 20 cleaning action is completed.

[0083] In a specific embodiment, taking the driving device including a gear 603 and a rack 604 as an example, the air conditioner body 10 includes a compressor, and the operation stages of the air conditioner include a normal operation stage and a self-cleaning stage. In the normal operation stage, the filter 20 is in the working position, and in the self-cleaning stage, the filter 20 is in the cleaning position. When the filter 20 starts to self-clean, the fan and the compressor stop running, and the filter 20 is in the working position, that is, the pressing member 30 is in the highest position under the limit condition. The filter 20 is arched due to its structural characteristics and is separated from the heat exchanger 50. When the whole machine receives the user's self-cleaning instruction, the fan and the compressor stop running, the gear 603 and the rack 604 start to move, driving the filter 20 to continue to move downward until the filter 20 is fully tightened and fully attached to the surface of the heat exchanger 50. The compressor starts to run, causing the heat exchanger 50 to frost, and then the surface of the filter 20 begins to frost. When the frost layer reaches a certain thickness, it is defrosted, and finally the filter 20 and the heat exchanger 50 are cleaned at the same time; after cleaning, the filter 20 is reset, the gear 603 and the rack 604 move, driving the filter 20 to continue to move upward, and finally reaching the limit and returning to the working position, and finally completing the self-cleaning process of the filter 20.

[0084] In the present application, the filter 20 is cleaned by controlling the driving device 60 through the controller, and the traditional mechanical cleaning of the filter 20 is abandoned. Instead, the frost and defrost of the heat exchanger 50 are used to drive the frost and defrost of the surface of the filter 20 so that the surface of the filter 20 is cleaned. The present application can remove the dust collection and dust box, and the dust is directly discharged to the outside through the water box and the drain pipe, ensuring that the user does not need to take any extra actions, which is simple and convenient; and a flexible filter 20 is used, so that the filter 20 can better adapt to the shape error of the heat exchanger 50 and be completely attached to the surface of the heat exchanger 50, and the final cleaning effect is better. Optionally, the shape and size of the filter 20 are respectively matched with the shape and size of the heat exchanger 50, so that in the cleaning position, the filter 20 can be fully attached to the heat exchanger 50 to achieve cleaning of the entire filter 20.

[0085] In summary, in the present application, the surface of the filter 20 is cleaned by frosting and defrosting the filter 20, and the cleaning process is completed synchronously with the cleaning process of the surface of the heat exchanger 50, which is simple and fast. The dust on the surface of the filter 20 is cleaned by frosting and defrosting the filter 20. When the surface of the filter 20 needs to be cleaned, the filter 20 is driven to move to the cleaning position. The filter 20 is tightly attached to the heat exchanger 50 according to the shape of the outer surface of the heat exchanger 50 to ensure the spread of the frost layer. Finally, the dust on the surface of the filter 20 is washed and sterilized through frosting and defrosting. Finally, the defrosted water melts and flows to the water receiving tray and flows to the outside without the user taking any action. Moreover, the driving device 60 has a simple structure, the filter 20 adapts well to the shape of the heat exchanger 50, has high adaptability, is easy for users to use, can quickly clean the filter 20, has a good cleaning effect, and has high reliability; and the structure for self-cleaning the air conditioner filter occupies a small space, does not affect the air intake and outlet 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.

[0086] 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 a filter screen of an air conditioner, the air conditioner comprising an air conditioner body, characterized in that: The structure comprises: A filter screen, comprising a fixed portion and a moving portion connected to each other, wherein the fixed portion is configured to be fixed to the air conditioner body; The driving device is connected to the moving part and is configured to drive the moving part to move in the direction close to the heat exchanger of the air conditioner so that the filter moves to a cleaning position close to the heat exchanger. The heat exchanger is frosted to frost the surface of the filter at the cleaning position. The heat exchanger is then defrosted and the water flow formed by the frost layer washes the dust on the surface of the filter.

2. The structure according to claim 1, characterized in that: The fixing portion and the moving portion are two opposite ends of the filter screen in the width direction.

3. The structure according to claim 1, characterized in that: Also includes: A pressing member is arranged on the moving part, and the driving device is drivingly connected to the pressing member, so that the driving device is drivingly connected to the moving part.

4. The structure according to claim 3, characterized in that: The pressing member penetrates through the filter screen; and / or, The pressing piece is a rigid pressing piece.

5. The structure according to claim 1, characterized in that: Also includes: A fixing member is arranged on the fixing portion and is used for fixing the fixing portion to the air conditioner body.

6. The structure according to claim 1, characterized in that The filter net is a flexible filter net.

7. The structure according to any one of claims 1 to 6, characterized in that The driving device includes a driver, which is drivingly connected to the moving part and is configured to drive the moving part to reciprocate between the cleaning position and the working position, wherein the distance between the moving part and the heat exchanger at the working position is greater than the distance between the moving part and the heat exchanger at the cleaning position.

8. An air conditioner, characterized in that: include: The air conditioner body includes a heat exchanger; According to any one of claims 1 to 7, the structure for self-cleaning of the air conditioner filter, the filter is arranged on one side of the heat exchanger.

9. The air conditioner according to claim 8, characterized in that: The heat exchanger comprises: heat exchange tubes; and The end cover comprises an end cover body and an extension part which are connected to each other. The heat exchange tube is arranged on the end cover body, and the driving device is arranged on the extension part.

10. The air conditioner according to claim 8 or 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 filter to move to a cleaning position, and control the driving device to drive the filter to move to a working position after frost and defrost on the surface of the heat exchanger.

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