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

Abstract

The application relates to the air conditioner technical field, and discloses a structure for self-cleaning of a filter screen of an air conditioner and the air conditioner. The structure for self-cleaning of the filter screen of the air conditioner comprises a filter screen assembly and a driving device. The driving device comprises a telescopic push-pull part, the filter screen assembly is connected with the push-pull part, and the driving device is configured to drive the filter screen assembly to move to a cleaning position in abutment with a heat exchanger of the air conditioner. In the cleaning position, the filter screen assembly is in abutment with the surface of the heat exchanger, so that the cleaning of the filter screen can be realized while the heat exchanger is cleaned. On the one hand, the filter screen is cleaned by driving the filter screen assembly to the cleaning position through the driving device, and the structure is simple; on the other hand, the cleaning of the filter screen and the cleaning of the heat exchanger are simultaneously realized, the disadvantages that the cleaning of the filter screen and the cleaning of the heat exchanger need to be respectively performed are avoided, and the cleaning efficiency of the filter screen and the heat exchanger is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, for example to a structure for self-cleaning air conditioner filters and an air conditioner. Background Technology

[0002] Currently, when existing air conditioners are used for extended periods, dust in the air enters the air return vent. Fine dust particles pass through the filter for air circulation, but larger dust particles adhere to the air conditioner's filter. Due to the influence of wind speed and mesh size, the dust forms a chain-like structure, which captures even finer dust particles by swaying left and right. Furthermore, the humidity in the air increases the viscosity of the dust, making it adhere more firmly to the filter surface and extremely difficult to clean. When the filter is in a dirty state for a long time, bacteria will grow, becoming a source of viruses and bacteria.

[0003] Current filter cleaning methods are primarily mechanical, involving numerous moving parts and occupying considerable space. They cannot be directly applied to existing air conditioners, significantly increasing their thickness and making them aesthetically unappealing. Another method uses a rotating shaft to move the filter along a cleaning path and reset it, with a water tank at a fixed location for washing. However, this method requires a large amount of condensate; in low-humidity areas, the condensate is insufficient for cleaning. Furthermore, during winter heating, no condensate is generated, making filter cleaning impossible. This insufficient condensate is a fatal flaw of this method. A few methods use ultrasonic cleaning, but these require multiple points of placement, and the noise affects user experience.

[0004] It is evident that the above cleaning methods all have some drawbacks. How to avoid these drawbacks and achieve effective filter cleaning is a problem that urgently needs to be solved. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a structure and air conditioner for self-cleaning air conditioner filters, to solve the problems of existing mechanical cleaning methods leading to increased air conditioner thickness, rotary shaft cleaning methods requiring a large amount of condensate, and ultrasonic methods causing excessive noise.

[0007] According to a first aspect of the present application, a structure for self-cleaning an air conditioner filter is provided, comprising: a filter assembly; and a drive device including a retractable push-pull portion, the filter assembly being connected to the push-pull portion, and the drive device being configured to drive the filter assembly to a cleaning position that is in contact with the heat exchanger of the air conditioner.

[0008] According to a second aspect of the embodiments of this application, an air conditioner is provided, including a heat exchanger; a housing defining an installation space; and a structure for self-cleaning of the air conditioner filter as described in any of the above embodiments, wherein the heat exchanger and the filter assembly are located within the installation space, and a drive device is disposed in the housing.

[0009] The structure and air conditioner for self-cleaning air conditioner filters provided in this disclosure can achieve the following technical effects: When the filter needs to be cleaned, the push-pull part of the drive device drives the filter assembly to the cleaning position. In the cleaning position, since the filter assembly is in contact with the heat exchanger surface (i.e., the filter assembly is in contact with the heat exchanger), the filter can be cleaned simultaneously with the heat exchanger. In other words, the cleaning of the filter and the heat exchanger are carried out synchronously. On the one hand, driving the filter assembly to the cleaning position via the drive device to clean the filter results in a simple structure, avoiding the drawbacks of increased air conditioner thickness caused by existing mechanical cleaning methods, and also avoiding the drawbacks of large condensate volume requirements for rotary shaft cleaning methods and high noise levels for ultrasonic cleaning methods. On the other hand, while cleaning the filter, the drawbacks of needing to clean the filter and heat exchanger separately are avoided, improving the cleaning efficiency of both the filter and the heat exchanger.

[0010] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0011] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0012] Figure 1 This is a cross-sectional structural diagram of an air conditioner provided in an embodiment of the present disclosure, wherein the filter assembly is in the working position, arrow M indicates the width direction of the first connecting segment, and arrow N indicates the width direction of the second connecting segment;

[0013] Figure 2 This is a cross-sectional structural diagram of an air conditioner provided in an embodiment of the present disclosure, wherein the filter assembly is in the cleaning position.

[0014] Figure label:

[0015] 100 Air conditioner, 10 Housing, 101 Installation space, 20 Filter assembly, 201 Filter frame, 2011 Frame body, 2012 First connecting section, 2013 Second connecting section, 2014 Extension section, 2015 Corner, 30 Heat exchanger, 301 First heat exchanger section, 302 Second heat exchanger section, 303 Vertical section, 304 Heat exchanger corner, 40 Fan wheel, 50 Air guide plate, 60 Drive device, 601 Push-pull part. Detailed Implementation

[0016] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0017] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0018] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0019] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" 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, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0020] Unless otherwise stated, the term "multiple" means two or more.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0022] Combination Figure 1 and Figure 2 As shown, this disclosure provides a structure for self-cleaning of an air conditioner filter. The air conditioner 100 can be a wall-mounted air conditioner 100 or a floor-standing air conditioner 100. The following description uses a wall-mounted air conditioner 100 as an example.

[0023] Air conditioner 100 includes a heat exchanger 30, a fan 40 or a blower, a housing 10, and a structure for self-cleaning the air conditioner filter. The self-cleaning structure includes a filter assembly 20, which is disposed on one side of the heat exchanger 30, for example... Figure 1 and Figure 2 As shown, the filter assembly 20 is positioned above the heat exchanger 30. The housing 10 defines an installation space 101, within which the heat exchanger 30 and the filter assembly 20 are housed. The housing 10 has an air outlet communicating with the installation space 101. Under the action of the impeller 40 or a fan, air passes sequentially through the filter assembly and the heat exchanger 30 before being blown out through the air outlet. A guide vane 50 is provided at the air outlet to adjust the airflow direction.

[0024] The structure for self-cleaning air conditioner filters includes a filter assembly 20 and a drive unit 60.

[0025] The filter assembly 20 includes a filter screen for filtering air flowing through it. The drive unit 60 includes a retractable push-pull portion 601, to which the filter assembly 20 is connected. The drive unit 60 is configured to drive the filter assembly 20 to a cleaning position where it is in contact with the heat exchanger 30. Figure 2 As shown, the filter assembly is located in the cleaning position.

[0026] The retractable push-pull part 601 is connected to the filter screen assembly 20. The movement of the filter screen assembly 20 relative to the heat exchanger 30 is achieved by the extension and retraction of the push-pull part 601, thereby driving the filter screen assembly 20 to a cleaning position that is in contact with the surface of the heat exchanger 30.

[0027] In the cleaning position, the filter assembly and heat exchanger are close together. "Close together" means that the distance between the filter assembly and the heat exchanger is less than the distance between them when the air conditioner is in normal cooling or heating mode. Therefore, "close together" includes two situations: the filter assembly is at least partially in contact with the surface of the heat exchanger (i.e., the distance between the filter assembly and the heat exchanger is zero), and the distance between the filter assembly and the heat exchanger is relatively small. For example... Figure 2 In this configuration, the filter assembly is positioned above the heat exchanger and adheres to its upper surface, with the distance between the filter assembly and the heat exchanger being zero. The term "smaller distance" refers to a distance less than the distance between the filter assembly and the heat exchanger during normal cooling and heating operation. Since the position of the filter assembly during normal cooling and heating is defined as the working position, the distance between the filter assembly and the heat exchanger when they are "close" is less than the distance in the working position. In other words, when cleaning is required, the drive unit moves the filter assembly closer to the heat exchanger to the cleaning position. After cleaning, the filter assembly moves away from the heat exchanger back to the working position.

[0028] At the cleaning position, the push-pull part 601 presses the filter screen assembly 20 against the surface of the heat exchanger 30, which can achieve the frosting and defrosting of the filter screen by utilizing the frosting and defrosting of the heat exchanger 30. Thus, the filter screen can be cleaned at the same time as the heat exchanger 30, making the cleaning method of the filter screen simple and improving the cleaning efficiency of the filter screen and the heat exchanger 30. It also reduces the user's actions and avoids the disadvantage of having to clean the filter screen and the heat exchanger 30 separately.

[0029] Optionally, the drive unit 60 is disposed in the housing 10, for example, the drive unit 60 is disposed in the mounting space 101 and fixed to the housing 10.

[0030] Optionally, the push-pull portion 601 performs a linear reciprocating motion to drive the filter assembly 20 between a cleaning position and a working position, wherein the distance between the filter assembly and the heat exchanger in the working position is greater than the distance between the filter assembly and the heat exchanger in the cleaning position. Figure 1 The middle filter assembly is in the working position, such as Figure 2 The middle filter assembly is in the cleaning position.

[0031] The push-pull part 601 performs a linear reciprocating extension and retraction motion, thereby driving the filter screen assembly 20 to perform a linear reciprocating motion relative to the heat exchanger 30, realizing the movement of the filter screen assembly 20 relative to the heat exchanger 30. Specifically, the push-pull part 601 drives the filter screen assembly 20 to move between the cleaning position and the working position. Figure 1 and Figure 2 As shown, the filter assembly 20 is located above the heat exchanger 30, and the push-pull part 601 is located above the filter assembly 20. The push-pull part makes a vertical reciprocating motion. When the push-pull part 601 extends downward, it drives the filter assembly 20 to move downward to the cleaning position. When the push-pull part 601 retracts upward, it drives the filter assembly 20 to move upward. The filter assembly 20 separates from the heat exchanger 30 and moves to the working position.

[0032] When the filter needs cleaning, the drive device 60 moves the filter assembly 20 to the cleaning position, where the filter is cleaned. After cleaning, the drive device 60 moves the filter assembly 20 to the working position, where the filter assembly 20 is separated from the heat exchanger 30. In other words, the filter assembly 20 and the heat exchanger 30 do not contact each other in the working position. This reduces air intake resistance during normal operation of the air conditioner 100 and prevents increased air resistance caused by the filter adhering to the surface of the heat exchanger 30 during normal cooling and heating.

[0033] Optionally, the drive device 60 includes a linear motor, a cylinder, a hydraulic cylinder, an electric push rod, or an electromagnetic push-pull rod; the push-pull part 601 is the movable end of the linear motor, cylinder, hydraulic cylinder, electric push rod, or electromagnetic push-pull rod.

[0034] Linear motors, cylinders, hydraulic cylinders, electric push rods, or electromagnetic push-pull rods can drive the filter screen to move between the cleaning position and the working position, while having a simple structure and low cost.

[0035] Taking the drive device 60 as a linear motor as an example, in the cleaning position, the linear motor presses the filter screen onto the surface of the heat exchanger 30 to form frost. When the frost layer reaches a certain level, the four-way valve of the air conditioner 100 switches to heat and defrost. After defrosting, the linear motor lifts the filter screen, and the filter screen reaches the working position. The filter screen has achieved the effect of not affecting the air intake resistance. After resetting, the surface cleaning of the filter screen is completed.

[0036] Optionally, the filter assembly 20 includes a filter frame 201 and a filter. The filter is mounted on the filter frame 201. Multiple drive devices 60 can be used, and these devices can be evenly distributed along the length of the filter to enhance the overall balance of the filter's movement. Taking a linear motor as an example, two linear motors can be installed at both ends of the filter frame 201 to control the separation and contact between the filter assembly 20 and the heat exchanger 30. Finally, through frosting and defrosting, the dust on the filter surface is washed and sterilized. The defrosted water melts and flows into a drip tray, then outwards, requiring no user intervention.

[0037] The filter frame 201 supports the filter screen, thereby enhancing its strength, so that the filter screen assembly 20 can be placed against the surface of the heat exchanger 30 during cleaning. Optionally, the filter screen is arranged inside the filter frame 201, and the filter screen is arranged flat and straight on the filter frame 201.

[0038] Optionally, the filter frame 201 is a rigid frame, and the filter screen is a rigid filter screen, thereby further enhancing the strength of the filter assembly 20, allowing the filter assembly 20 to rest against the surface of the heat exchanger 30 in the cleaning position. For example, the filter frame 201 can be a metal frame, and the filter screen can be a metal filter screen. It is understood that the filter frame 201 can also be a plastic frame, and the filter screen can be a plastic filter screen.

[0039] Optionally, such as Figure 1 As shown, the filter frame 201 includes a frame body 2011.

[0040] The shape of the frame body 2011 is adapted to the shape of the windward side of the heat exchanger 30.

[0041] The shape of the frame body 2011 is adapted to the shape of the windward side of the heat exchanger 30, so that at the cleaning position, the frame body 2011 can be attached to the windward side of the heat exchanger 30 at various points. This makes it easier for frost to form on the filter screen when the heat exchanger 30 is frosted, enhancing the cleaning effect on the filter screen. Here, the windward side of the heat exchanger 30 refers to the surface of the heat exchanger 30 facing the filter screen assembly 20; air reaches the windward side of the heat exchanger 30 after passing through the filter screen. Figure 1 and Figure 2 In the process, the filter assembly 20 is located above the heat exchanger 30, and the upper surface of the heat exchanger 30 is the windward side. In the cleaning position, the filter assembly 20 is attached to the upper surface of the heat exchanger 30.

[0042] Optionally, the frame body 2011 includes a first connecting segment 2012 and a second connecting segment 2013.

[0043] The second connecting segment 2013 is connected to the first connecting segment 2012, and the connection point with the first connecting segment 2012 forms an angle 2015.

[0044] The connection between the first connecting section 2012 and the second connecting section 2013 forms an angle 2015. Optionally, the frame body 2011 is V-shaped. The heat exchanger 30 has a three-plane sheet metal connection. The V-shape can perfectly match the surface of the heat exchanger 30 facing the filter assembly 20, so that the filter assembly 20 can be tightly attached to the heat exchanger 30, making it easier for frost to form. Optionally, the heat exchanger 30 includes a first heat exchanger section 301 and a second heat exchanger section 302 connected to each other. The connection between the first heat exchanger section 301 and the second heat exchanger section 302 forms a heat exchanger section bend 304. The bend 2015 at the connection between the first connecting section 2012 and the second connecting section 2013 corresponds to the heat exchanger section bend 304. The first connecting section 2012 is adapted to the windward side of the first heat exchanger section 301, and the second connecting section 2013 is adapted to the windward side of the second heat exchanger section 302. Thus, in the cleaning position, the first connecting section 2012 is close to the windward side of the first heat exchanger section 301, and the second connecting section 2013 is close to the windward side of the second heat exchanger section 302.

[0045] Optionally, the filter frame 201 also includes an extension 2014.

[0046] The extension section 2014 prevents air leakage and provides coarse filtration of the air.

[0047] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the extension segment 2014 is connected to one end of the first connecting segment 2012 away from the second connecting segment 2013, and extends along the width direction of the first connecting segment 2012. Figure 1 (In the direction of the middle arrow M) the extension is extended, and the specific extension length of the extension segment 2014 can be flexibly determined according to the dimensions of each component of the air conditioner 100.

[0048] In another specific embodiment, the extension segment 2014 is connected to one end of the second connecting segment 2013 opposite to the first connecting segment 2012, and along the width direction of the second connecting segment 2013. Figure 1 (In the direction of the middle arrow N) the extension is extended, and the specific extension length of the extension segment 2014 can be flexibly determined according to the dimensions of each component of the air conditioner 100.

[0049] The heat exchanger 30 includes a vertical section 303 extending in a vertical direction. In the cleaning position, the frame body 2011 abuts against the windward surface of the heat exchanger 30, excluding the windward surface of the vertical section 303, and the shape of the frame body 2011 is adapted to the windward surface of the heat exchanger 30, excluding the windward surface of the vertical section 303. The filter frame 201 adopts a V-shape, sacrificing the vertical direction of the filter frame 201, but providing an extension section 2014. The extension section 2014 effectively extends the front or rear end of the V-shape and prevents air leakage from the heat exchanger 30 in the vertical direction. Specifically, when the extension section 2014 is connected to the end of the first connecting section 2012 away from the second connecting section 2013, the extension section 2014 effectively extends the front end of the V-shape; when the extension section 2014 is connected to the end of the second connecting section 2013 away from the first connecting section 2012, the extension section 2014 effectively extends the rear end of the V-shape.

[0050] Optionally, the push-pull part 601 is connected to the side of the filter frame 201 away from the heat exchanger 30 and is located at the corner 2015.

[0051] The push-pull part 601 is connected to the side of the filter assembly 20 away from the heat exchanger 30, and does not affect the contact between the filter assembly 20 and the heat exchanger 30 in the cleaning position. Figure 1 and Figure 2 As shown, the push-pull part 601 is connected to the upper surface of the filter assembly 20.

[0052] The push-pull part 601 is located at the bend 2015, so that the extension and retraction of the push-pull part 601 can drive the filter screen assembly 20 to move smoothly relative to the heat exchanger 30.

[0053] This disclosure provides an air conditioner 100, including a heat exchanger 30, a housing 10, and a structure for self-cleaning of the air conditioner filter as described in any of the above embodiments.

[0054] The housing 10 defines an installation space 101, the heat exchanger 30 and the filter assembly 20 are located within the installation space 101, and the drive unit 60 is disposed in the housing 10.

[0055] The air conditioner 100 provided in this embodiment includes the structure for self-cleaning of the air conditioner filter as described in any of the above embodiments, and therefore has all the beneficial effects of the structure for self-cleaning of the air conditioner filter as described in any of the above embodiments, which will not be repeated here.

[0056] Optionally, the air conditioner 100 also includes a controller.

[0057] The controller is connected to the drive unit 60 and is configured to control the drive unit 60 to drive the filter assembly 20 to the cleaning position in response to a cleaning command for cleaning the filter screen, and to control the drive unit 60 to drive the filter assembly 20 to the working position after frost formation and defrosting on the surface of the heat exchanger 30.

[0058] The controller is used to control the operation of the drive unit 60. Specifically, the controller controls the extension and retraction of the push-pull part 601 to adjust the position of the filter assembly 20 relative to the heat exchanger 30.

[0059] Upon receiving a cleaning command for the filter screen, the controller controls the extension and retraction of the push-pull section 601 in response to the cleaning command, driving the filter screen assembly 20 to the cleaning position. The controller controls the air conditioner 100 to operate in cooling mode. Optionally, the air outlet is closed at this time to prevent the cooling mode from affecting the indoor temperature. The heat exchanger 30 frosts, dispersing the cold air and frost onto the filter surface, forming a frost layer. The accumulation of the frost layer ensures frost formation on the filter surface. The frost formation process squeezes the dust on the filter surface, ultimately loosening the dust and reducing its adhesion. Then, the controller controls the air conditioner 100 to operate 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 30 defrosts, and the frost layer forms a water flow that washes away the dust on the filter surface, carrying away the dust from the filter and the heat exchanger 30. The water containing dust flows into the water collection box and is discharged outdoors through the drain pipe, completing one filter cleaning cycle. After cleaning, the controller controls the drive device 60 to move in the reverse direction, resetting the filter assembly 20 to the working position, thus completing one filter cleaning cycle.

[0060] like Figure 1 and Figure 2 As shown, taking the filter assembly 20 located above the heat exchanger 30 and the push-pull part 601 connected above the filter assembly 20 as an example, the controller controls the push-pull part 601 to extend downwards, driving the filter assembly 20 to move closer to the heat exchanger 30, that is, the filter assembly 20 moves downwards until it reaches the cleaning position. Simultaneously, the controller controls the heat exchanger 30 to sequentially operate in cooling and heating modes, causing the heat exchanger 30 to frost and defrost. The filter follows the frost and defrost of the heat exchanger 30, thus cleaning the filter. After the filter is cleaned, the controller controls the push-pull part 601 to retract upwards, driving the filter assembly 20 to move away from the heat exchanger 30, that is, the filter assembly 20 moves upwards until it reaches the working position.

[0061] In this application, the filter screen is cleaned by controlling the drive device 60 through the controller. This method abandons the traditional mechanical cleaning of the filter screen and instead uses the frost and defrost of the heat exchanger 30 to drive the frost and defrost of the filter screen surface, thus cleaning the filter screen surface. This application can eliminate the need for dust collection and dust collection box. The dust is directly discharged to the outside through the water box and drain pipe, ensuring that the user does not need any extra actions, which is simple and convenient. Moreover, the use of a rigid frame and rigid filter screen makes the filter screen assembly 20 easier to adapt to the surface of the heat exchanger 30, and has stronger adaptability.

[0062] In summary, this application cleans the filter screen surface through a process of frosting and defrosting, which is completed simultaneously with the cleaning process of the heat exchanger 30 surface, making it simple and quick. The filter screen surface is cleaned by two processes: frosting and defrosting. The filter screen assembly 20 is tightly attached to the heat exchanger 30 according to its outer surface shape, ensuring the spread of the frost layer. Finally, through frosting and defrosting, the dust on the filter screen surface is rinsed and sterilized. The defrosted water melts and flows into the water collection tray, flowing outdoors, without requiring any user intervention. Furthermore, the structure, including the drive device 60 with a push-pull part 601 and the V-shaped frame body 2011, enables the filter screen assembly to adhere to and reposition itself on the heat exchanger 30 surface, resulting in a simple structure and high reliability. The filter assembly 20 has a good shape to adapt to the heat exchanger 30, is highly adaptable, easy for users to use, can quickly clean the filter, has a good cleaning effect, and is highly reliable; moreover, the structure for self-cleaning the air conditioner filter occupies little space, does not affect the air intake and exhaust volume of the air conditioner 100, does not increase the overall thickness, and will not affect the appearance.

[0063] The foregoing description and accompanying drawings fully illustrate 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. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. 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 its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A structure for self-cleaning of an air conditioner filter, characterized by, The structure comprises: a filter screen assembly; and a driving device comprising a telescopic push-pull part, the filter screen assembly being connected to the push-pull part, the driving device being configured to drive the filter screen assembly to move to a cleaning position in which the filter screen is in abutment with a heat exchanger of an air conditioner, and in the cleaning position, the frost and defrost of the filter screen are realized by the frost and defrost of the heat exchanger, so as to realize the cleaning of the filter screen.

2. The structure according to claim 1, wherein the push-pull part is configured to perform linear reciprocating motion to drive the filter screen assembly to reciprocate between the cleaning position and a working position, wherein the distance between the filter screen assembly and the heat exchanger in the working position is greater than the distance between the filter screen assembly and the heat exchanger in the cleaning position.

3. The structure of claim 1, wherein the driving device comprises a linear motor, a pneumatic cylinder, a hydraulic cylinder, an electric push rod or an electromagnetic push-pull rod; the push-pull part is a movable end of the linear motor, the pneumatic cylinder, the hydraulic cylinder, the electric push rod or the electromagnetic push-pull rod.

4. The structure according to any one of claims 1 to 3, characterized in that, The filter screen assembly comprises: a filter screen frame; and a filter screen arranged on the filter screen frame.

5. The structure of claim 4, wherein The filter screen frame comprises: a frame body, the shape of which is adapted to the shape of a windward surface of the heat exchanger.

6. The structure of claim 5, wherein The frame body comprises: a first connecting section; and a second connecting section connected to the first connecting section and forming an angle at the connection between the first connecting section and the second connecting section.

7. The structure of claim 6, wherein The filter screen frame further comprises: an extension section connected to one end of the first connecting section away from the second connecting section and extending along the width direction of the first connecting section, or connected to one end of the second connecting section away from the first connecting section and extending along the width direction of the second connecting section.

8. The structure according to claim 6, wherein the push-pull part is connected to one side of the filter screen frame away from the heat exchanger and arranged at the angle.

9. An air conditioner characterized by comprising: The structure comprises: a heat exchanger; a housing defining an installation space; and the structure for self-cleaning of a filter screen of an air conditioner according to any one of claims 1 to 8, the heat exchanger and the filter screen assembly being located in the installation space, and the driving device being arranged in the housing. The structure further comprises:

10. The air conditioner of claim 9, wherein a controller connected to the driving device and configured to, in response to a cleaning instruction for cleaning the filter screen, control the driving device to drive the filter screen assembly to move to the cleaning position, and after the heat exchanger surface is frosted and defrosted, control the driving device to drive the filter screen assembly to move to the working position. ​

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