Air conditioner

Abstract

The invention provides an air conditioner which comprises a self-cleaning device. The self-cleaning device comprises a first support and a reel assembly. The reel assembly is connected with the first end of the filtering part and is arranged close to the first end of the first bracket; the reel assembly is configured to drive the filtering part to move between a first position and a second position along the first bracket; when the filtering piece is located at the first position, the filtering piece is located on one side of the first support in the thickness direction of the first support; and when the filtering piece is located at the second position, the filtering piece is wound on the periphery of the reel.

Description

air conditioner

[0001] This application claims the priority of Chinese patent application No. 202311236273.1 filed on September 22, 2023, the priority of Chinese patent application No. 202321340922.8 filed on May 29, 2023, the priority of Chinese patent application No. 202321430623.3 filed on June 6, 2023, the priority of Chinese patent application No. 202322365841.X filed on August 31, 2023, and the priority of Chinese patent application No. 202322593133 filed on September 22, 2023. 1, the priority of the Chinese patent application with application number 202323635572.0 filed on December 29, 2023, the priority of the Chinese patent application with application number 202323661842.5 filed on December 29, 2023, the priority of the Chinese patent application with application number 202323661853.3 filed on December 29, 2023, and the priority of the Chinese patent application with application number 202323638392.8 filed on December 29, 2023, the entire contents of which are incorporated into this application by reference. Technical Field

[0002] The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0003] In family life, air conditioners have become one of the essential home appliances in every household. As a part of the air conditioner, the indoor unit is installed indoors and exchanges heat with the indoor air to increase or decrease the indoor temperature.

[0004] The indoor unit filters the air entering the indoor unit through the filter element to prevent dust and other particles in the air from entering the indoor unit, and the dust attached to the filter element is cleaned by the self-cleaning device to keep the indoor unit running.

[0005] Summary of the Invention

[0006] An air conditioner is provided, comprising an outdoor unit and an indoor unit, wherein the indoor unit is connected to the outdoor unit and comprises a housing, an indoor heat exchanger, a fan assembly, a filter element, and at least one self-cleaning device. The housing comprises an air inlet and an air outlet. The indoor heat exchanger is disposed within the housing and is configured to perform heat exchange with air flowing therethrough. The fan assembly is disposed on a side of the indoor heat exchanger away from the air inlet and is configured to drive indoor air into the housing from the air inlet and to deliver the air after heat exchange with the indoor heat exchanger from the air outlet. The filter element is configured to filter dust from the air passing through the filter element. The at least one self-cleaning device is detachably connected to the housing. Any of the at least one self-cleaning device comprises a first bracket, a reel assembly, and a tensioning assembly. The first bracket is disposed within the housing and is located between the air inlet and the indoor heat exchanger. A reel assembly is connected to the first end of the filter element and is disposed adjacent to the first end of the first bracket. The reel assembly is configured to drive the filter element to move along the first bracket between a first position and a second position. When the filter element is in the first position, the filter element is located on one side of the first bracket along the thickness direction of the first bracket, and the second end of the filter element abuts against the second end of the first bracket. When the filter element is in the second position, the filter element is wound around the periphery of the reel. The tensioning assembly is connected to the first bracket and the second end of the filter element. The tensioning assembly is configured to maintain the filter element in a tensioned state as the filter element moves between the first and second positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG1 is a perspective view of an air conditioner according to some embodiments;

[0008] FIG2 is a cross-sectional view of an air conditioner according to some embodiments;

[0009] FIG3 is a perspective view of a self-cleaning device of an air conditioner according to some embodiments;

[0010] FIG4 is a partial enlarged view of the circle P1 in FIG3 ;

[0011] 5 is a structural diagram of a self-cleaning device of an air conditioner according to some embodiments when the filter element is in a first position;

[0012] FIG6 is a partial enlarged view of the circle P2 portion in FIG5 ;

[0013] 7 is a structural diagram of a self-cleaning device of an air conditioner according to some embodiments when the filter element is in the second position;

[0014] FIG8 is a perspective view of an air conditioner with a panel opened according to some embodiments;

[0015] FIG9 is another cross-sectional view of an air conditioner according to some embodiments;

[0016] FIG10 is a perspective view of a housing of an air conditioner according to some embodiments;

[0017] FIG11 is a structural diagram of a panel of an air conditioner according to some embodiments;

[0018] FIG12 is a perspective view of a slider of an air conditioner according to some embodiments;

[0019] FIG13 is a perspective view of a mounting assembly of an air conditioner according to some embodiments;

[0020] FIG14 is a perspective view of a mounting assembly of an air conditioner according to some embodiments from another perspective;

[0021] FIG15 is a perspective view of a mounting assembly of an air conditioner according to some embodiments from another perspective;

[0022] FIG16 is a structural diagram of a clamping portion of an air conditioner according to some embodiments;

[0023] FIG17 is a perspective view of a slider of an air conditioner according to some embodiments from another perspective;

[0024] FIG18 is a cross-sectional view of a slider, a mounting seat, and a clamping portion of an air conditioner according to some embodiments;

[0025] FIG19 is a block diagram of a mounting assembly for an air conditioner according to some embodiments;

[0026] 20 is a cross-sectional view of a slider, a mounting seat, and a clamping portion of an air conditioner according to some embodiments when the slider is in a third position;

[0027] 21 is a cross-sectional view of a slider, a mounting seat, and a clamping portion of an air conditioner according to some embodiments when the slider is between a third position and a fourth position;

[0028] 22 is a cross-sectional view of a slider, a mounting seat, and a clamping portion of an air conditioner according to some embodiments when the slider is in a fourth position;

[0029] 23 is a perspective view of a slider, a mounting seat, and a clamping portion of an air conditioner according to some embodiments when the slider is in a third position;

[0030] FIG24 is a perspective view of a slider, a mounting seat, and a clamping portion of an air conditioner according to some embodiments when the slider and the clamping portion are disengaged;

[0031] FIG25 is a perspective view of an air conditioner according to some embodiments;

[0032] FIG26 is an exploded view of an indoor unit of an air conditioner according to some embodiments;

[0033] FIG27 is an exploded view of a filter element and a self-cleaning device of an air conditioner according to some embodiments;

[0034] FIG28 is a structural diagram of a filter element and a self-cleaning device of an air conditioner according to some embodiments;

[0035] FIG29 is a perspective view of a filter element and a self-cleaning device of an air conditioner according to some embodiments;

[0036] FIG30 is another structural diagram of a filter element and a self-cleaning device of an air conditioner according to some embodiments;

[0037] FIG31 is a perspective view of a filter element, a self-cleaning device, and a driven element of an air conditioner according to some embodiments;

[0038] FIG32 is a perspective view of a filter element, a self-cleaning device, and a mounting element of an air conditioner according to some embodiments;

[0039] FIG33 is a perspective view of a filter element, a self-cleaning device, and a third clamping portion of an air conditioner according to some embodiments;

[0040] FIG34 is a perspective view of a filter element, a self-cleaning device, and a first transmission assembly of an air conditioner according to some embodiments;

[0041] FIG35 is a partial enlarged view of circle P3 in FIG34 ;

[0042] FIG36 is a perspective view of a first transmission assembly of an air conditioner according to some embodiments;

[0043] FIG37 is a perspective view of a filter element, a self-cleaning device, and another first transmission assembly of an air conditioner according to some embodiments;

[0044] FIG38 is a partial enlarged view of circle P4 in FIG37 ;

[0045] 39 is a cross-sectional view of a filter element and a self-cleaning device of an air conditioner according to some embodiments when the cleaning assembly is in a second position;

[0046] FIG40 is a cross-sectional view of a filter element and a self-cleaning device of an air conditioner according to some embodiments when the cleaning assembly is in a first position;

[0047] FIG41 is a structural diagram of a first stopper and a limiting portion of an air conditioner according to some embodiments when the cleaning assembly is in the second position;

[0048] FIG42 is a structural diagram of a first stopper and a limiting portion of an air conditioner according to some embodiments when a cleaning assembly is in a first position;

[0049] FIG43 is a cross-sectional view of a filter element and a self-cleaning device of an air conditioner in a cleaning assembly according to some embodiments;

[0050] FIG44 is a block diagram of an indoor unit according to some embodiments;

[0051] FIG45 is a perspective view of an indoor unit according to some embodiments;

[0052] FIG46 is an exploded view of a housing and a self-cleaning device of an indoor unit according to some embodiments;

[0053] FIG47 is an exploded view of a self-cleaning device of an indoor unit according to some embodiments;

[0054] FIG48 is a partial enlarged view of circle P5 in FIG47;

[0055] FIG49 is a cross-sectional view of a self-cleaning device of an indoor unit according to some embodiments;

[0056] FIG50 is an exploded view of a cleaning assembly of an indoor unit according to some embodiments;

[0057] FIG51 is another exploded view of a housing and a self-cleaning device of an indoor unit according to some embodiments;

[0058] FIG52 is a cross-sectional view of an indoor unit according to some embodiments;

[0059] FIG53 is a partial enlarged view of circle P6 in FIG52 corresponding to the cleaning brush being in the first position;

[0060] FIG54 is a partial enlarged view of circle P6 in FIG52 corresponding to the cleaning brush being in the second position;

[0061] FIG55 is a partial enlarged view of circle P6 in FIG52 corresponding to the cleaning brush being in the third position;

[0062] FIG56 is a structural diagram of a front cover of a base according to some embodiments;

[0063] FIG57 is a structural diagram of the front cover of the base in some embodiments from another perspective;

[0064] FIG58 is an exploded view of a self-cleaning device of an indoor unit according to some embodiments;

[0065] FIG59 is an exploded view of a driving assembly of an indoor unit according to some embodiments;

[0066] FIG60 is a perspective view of a stopper of an indoor unit according to some embodiments;

[0067] FIG61 is another block diagram of an indoor unit according to some embodiments;

[0068] FIG62 is another block diagram of an indoor unit according to some embodiments;

[0069] FIG63 is a flow chart of an execution method of a control component of an indoor unit according to some embodiments;

[0070] FIG64 is a flow chart of another execution method of a control component of an indoor unit according to some embodiments;

[0071] FIG65 is a flowchart of another execution method of a control component of an indoor unit according to some embodiments;

[0072] FIG66 is a flowchart of another execution method of a control component of an indoor unit according to some embodiments. DETAILED DESCRIPTION

[0073] The following will be combined with the accompanying drawings to clearly and completely describe some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0074] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0075] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0076] When describing some embodiments, the word "connected" and its derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connected" can mean fixed connection, detachable connection, or integration; it can be directly connected or indirectly connected through an intermediate medium.

[0077] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0078] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0079] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0080] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0081] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0082] Some embodiments of the present disclosure provide an air conditioner, which includes an indoor unit.

[0083] In some embodiments, the indoor unit includes an indoor heat exchanger configured to exchange heat between indoor air and a refrigerant transferred through the indoor heat exchanger.

[0084] The air conditioner also includes an outdoor unit, and the indoor unit and the outdoor unit are connected by a pipeline to transmit refrigerant.

[0085] In some embodiments, the outdoor unit includes an outdoor heat exchanger configured to exchange heat between outdoor air and a refrigerant transferred in the outdoor heat exchanger.

[0086] In some embodiments, the outdoor unit further includes a throttling assembly. The throttling assembly is connected between the outdoor heat exchanger and the indoor heat exchanger. The opening of the throttling assembly regulates the pressure of the refrigerant flowing through the outdoor heat exchanger and the indoor heat exchanger, thereby regulating the refrigerant flow rate between the outdoor heat exchanger and the indoor heat exchanger. The opening of the throttling assembly is adjustable to control the flow rate and pressure of the refrigerant flowing through the throttling assembly. The throttling assembly includes at least one of a throttle valve, an expansion valve, and a pressure reducer.

[0087] In some embodiments, the outdoor unit further includes a compressor configured to compress the refrigerant so that the low-temperature and low-pressure refrigerant is compressed to form a high-temperature and high-pressure refrigerant.

[0088] The compressor, outdoor heat exchanger, throttling assembly and indoor heat exchanger connected in sequence form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor heat exchanger and the indoor heat exchanger respectively to achieve cooling or heating of the air conditioner.

[0089] In some embodiments, the outdoor unit further includes a four-way valve connected to the refrigerant circuit and configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner performs a cooling mode or a heating mode.

[0090] In some embodiments, when the air conditioner operates in cooling mode, the refrigerant is compressed by the compressor and converted into a high-temperature, high-pressure, superheated gaseous refrigerant. This superheated gaseous refrigerant is then discharged into an outdoor heat exchanger for condensation. In the outdoor heat exchanger, the superheated gaseous refrigerant is cooled into a subcooled liquid refrigerant and enters a throttling assembly. The throttling assembly can throttle the subcooled liquid refrigerant into a low-temperature, low-pressure, gas-liquid two-phase refrigerant. This low-temperature, low-pressure gas-liquid two-phase refrigerant flows into the indoor heat exchanger for evaporation and heat absorption. Within the indoor heat exchanger, the refrigerant is again evaporated into a superheated gas and returned to the suction port of the compressor, completing a cycle.

[0091] In some embodiments, when the air conditioner is operating in heating mode, high-temperature, high-pressure gaseous refrigerant passes through a four-way valve and is discharged into the indoor heat exchanger for heating. After being cooled into subcooled liquid refrigerant in the indoor heat exchanger, it flows into a throttling assembly and is throttled by the throttling assembly into a low-temperature, low-pressure gas-liquid two-phase refrigerant. This low-temperature, low-pressure gas-liquid two-phase refrigerant enters the outdoor heat exchanger for evaporation and heat absorption.

[0092] With the widespread use of air conditioners, users' expectations for them are constantly increasing. The indoor unit consists of an air inlet and an air outlet. A filter is installed at the air inlet to filter the air entering the indoor unit and prevent foreign matter, such as dust, from entering the indoor unit. After the indoor unit has been operating for a period of time, excessive dust may accumulate on the filter, potentially clogging it partially. This reduces the air intake and lowers the cooling or heating efficiency of the air conditioner.

[0093] Typically, a roller brush is installed in the indoor unit to remove dust attached to the filter element, thereby improving the filtering capacity of the filter element and maintaining the cooling or heating efficiency of the indoor unit.

[0094] In this situation, some indoor units are equipped with a self-cleaning device to remove dust adhering to the filter element, keeping the indoor unit operational. This self-cleaning device typically consists of a dual-spool structure, with the filter element's ends wound around two reels. Rotating one of the two reels drives the filter element. This structure is complex, requires many parts, and requires a long filter element, resulting in high production costs. Furthermore, the self-cleaning device and filter element occupy a large space within the air conditioner indoor unit.

[0095] In order to solve the above technical problems, some embodiments of the present disclosure provide an air conditioner 1000, in which the indoor unit 1 of the air conditioner 1000 can clean the filter element by cooperating with the tensioning assembly through a single scroll structure, thereby simplifying the internal structure of the indoor unit 1, reducing the number of parts, reducing the length of the filter element, and thus reducing production costs and reducing the space occupied by the self-cleaning device and the filter element in the indoor unit of the air conditioner.

[0096] In some embodiments, as shown in FIG1 , an air conditioner 1000 includes an indoor unit 1. The indoor unit 1 includes a housing 101. One side (eg, the upper side) of the housing 101 is open to form an air inlet 102.

[0097] In some embodiments, as shown in FIG. 1 and FIG. 2 , the other side (eg, the front side or the lower side) of the housing 101 is open to form an air outlet 103 .

[0098] In some embodiments, as shown in FIG. 2 , the indoor unit further includes an indoor heat exchanger 105 . The indoor heat exchanger 105 is disposed in the housing 101 and is configured to perform heat exchange with the air entering the housing 101 from the air inlet 102 .

[0099] In some embodiments, the indoor unit also includes a fan assembly 30, which is arranged on the side of the indoor heat exchanger 105 away from the air inlet 102, and is configured to rotate and drive the gas flow in the shell 101, so that the air flows into the shell 101 from the air inlet 102, and the air after heat exchange with the indoor heat exchanger 105 is discharged from the air outlet 103 to the outside of the shell 101 (to the room).

[0100] It should be noted that the fan assembly 30 can guide the indoor air from the air inlet 102 to the indoor heat exchanger 105, so that the flow rate of air entering the indoor heat exchanger 105 from the air inlet 102 can be increased, thereby adjusting the air volume entering the indoor heat exchanger 105.

[0101] In some embodiments, as shown in Figures 1 and 2, the indoor unit further includes a filter element 40 (filter). The filter element 40 is disposed between the air inlet 102 and the indoor heat exchanger 105 and covers the air inlet 102. The filter element 40 is configured to filter air entering the housing 101 from the air inlet 102 to prevent dust in the air from entering the indoor unit 1.

[0102] For example, when the indoor unit 1 is in operation, air entering the housing 101 through the air inlet 102 is first filtered by the filter element 40 before entering the indoor heat exchanger 105. This prevents dust in the indoor air from entering the indoor heat exchanger 105 and preventing dust from accumulating on the indoor heat exchanger 105 and causing blockage. This helps improve the heat exchange efficiency of the indoor heat exchanger 105.

[0103] 3 and 5 , the indoor unit further includes a self-cleaning device 50 . The self-cleaning device 50 is detachably connected to the housing 101 and is configured to clean dust on the filter element 40 .

[0104] In some embodiments, as shown in FIG5 , the self-cleaning device 50 includes a reel assembly 52. ​​The reel assembly 52 is rotatable relative to the housing 101. The reel assembly 52 is connected to a first end of the filter element 40 so that the rotation of the reel assembly 52 drives the filter element 40 to move between a first position (i.e., an unfolded position) and a second position (a wound position).

[0105] For example, when the filter element 40 is in the first position, the filter element 40 covers the air inlet 102 and is located between the air inlet 102 and the indoor heat exchanger 105 to filter dust in the air flowing therethrough. When the filter element 40 is in the second position, the filter element 40 is wound on the reel assembly 52.

[0106] In some embodiments, the self-cleaning device 50 further includes a tensioning assembly 57. The tensioning assembly 57 is disposed adjacent to the reel assembly 52. ​​The tensioning assembly 57 is connected to the second end of the filter element 40 and is configured to apply a force to the filter element 40 when the filter element 40 moves between the first position and the second position, thereby maintaining the filter element 40 in a tensioned state and facilitating smooth movement of the filter element 40.

[0107] For example, when the filter element 40 is in the first position, the tensioning assembly 57 applies a pulling force to the second end of the filter element 40 to keep the filter element 40 in a tensioned state. For example, when the filter element 40 is in the second position, the tensioning assembly 57 applies a pulling force to the second end of the filter element 40 to keep the filter element 40 in a tensioned state.

[0108] It is understood that the tensioning assembly 57 can maintain tension in the filter element 40 when in the first and second positions, thereby facilitating cleaning of the filter element 40 by the self-cleaning device 50 and improving cleaning efficiency. Furthermore, the simple structure of the reel assembly 52 and the tensioning assembly 57 facilitates the simplification of the structure of the self-cleaning device 50 and reduces the space occupied by the self-cleaning device 50 within the housing 101. Furthermore, the above arrangement can also reduce the length of the filter element 40, thereby reducing production costs.

[0109] 3 and 4 , the self-cleaning device 50 further includes a base 51. The base 51 is detachably connected to the housing 101.

[0110] In some embodiments, the self-cleaning device 50 further includes a cleaning brush assembly 53. The reel assembly 52 and the cleaning brush assembly 53 are connected to the base 51 and are rotatable relative to the base 51. The reel assembly 52 and the cleaning brush assembly 53 extend along the length direction B of the housing 101. The cleaning brush assembly 53 is located on one side (e.g., the lower side) of the reel assembly 52 and is configured to clean dust from the filter element 40 during movement of the filter element 40 between the first position and the second position.

[0111] In some embodiments, as shown in FIG5 , the base 51 includes a cleaning cavity 56 . The cleaning brush assembly 53 is disposed in the cleaning cavity 56 .

[0112] In some embodiments, the top of the cleaning chamber 56 is open to form a first opening 563 . The reel assembly 52 is disposed at the first opening 563 .

[0113] In some embodiments, as shown in Figures 3 and 5, the bottom of the cleaning chamber 56 is open to form a second opening 564. The self-cleaning device 50 also includes a first receiving portion 55. The first receiving portion 55 is disposed at the second opening 564 and is disposed opposite the cleaning brush assembly 53. The first receiving portion 55 is configured to receive dust swept from the filter element 40 by the cleaning brush assembly.

[0114] It is understood that during the cleaning process of the self-cleaning device 50, at least a portion of the cleaning brush assembly 53 contacts the filter element 40, and as the filter element 40 is wound and unwound on the reel assembly 52, the cleaning brush assembly 53 and the filter element 40 generate relative motion. The cleaning brush assembly 53 can clean different areas of the filter element 40, and the first receiving portion 55 can collect and accommodate dust swept from the filter element 40 by the cleaning brush assembly 53.

[0115] In some embodiments, as shown in FIG3 , the self-cleaning device 50 further includes a first bracket 56A. The first bracket 56A is disposed within the housing 101, with a first end of the first bracket 56A proximate to the reel assembly 52 (i.e., proximate to the base 51). The tensioning assembly 57 is disposed on the first bracket 56A. The filter element 40 is movable along the first bracket 56A between a first position and a second position. In other words, the filter element 40 can move relative to the first bracket 56A along a predetermined trajectory.

[0116] In some embodiments, as shown in Figure 7, when the filter element 40 is in the first position, along the thickness direction H of the first bracket 56A (see Figure 5), the filter element 40 is located on one side (such as the upper side) of the first bracket 56A, and the second end of the filter element 40 is stopped against the second end of the first bracket 56A away from the reel assembly 52, so that the filter element 40 is laid on the first bracket 56A and is located between the air inlet and the indoor heat exchanger.

[0117] As the filter element 40 moves from the first position to the second position under the action of the reel assembly 52 and the tensioning assembly 57, the filter element 40 moves relative to the first bracket 56A toward the reel assembly 52 and is wound around the outer periphery of the reel assembly 52. ​​For example, when the filter element 40 is in the second position, at least a portion of the filter element 40 is wound around the outer periphery of the reel assembly 52.

[0118] Therefore, the first bracket 56A is used to install the tensioning assembly 57 and the filter element 40, and can limit and support the filter element 40, thereby facilitating improvement of the stability and reliability of the movement of the filter element 40.

[0119] In some embodiments, as shown in FIG5 , the tensioning assembly 57 includes a tensioning assembly body 571 , which is disposed on the first bracket 56A. For example, the tensioning assembly body is disposed in the first receiving groove.

[0120] In some embodiments, the tensioning assembly 57 further includes a connecting wire 572. A first end of the connecting wire 572 is connected to the tensioning assembly body 571 and is movable relative to the tensioning assembly body 571. A second end of the connecting wire 572 is connected to a second end of the filter element 40. The tensioning assembly body 571 is configured to apply a force to the connecting wire 572, causing the connecting wire 572 to apply a pulling force to the filter element 40, thereby placing the filter element 40 in a tensioned state.

[0121] In some embodiments, the first bracket 56A includes a plurality of guide shafts 561A.

[0122] For example, the plurality of guide shafts 561A include a first guide shaft 5611. The first guide shaft 5611 is disposed at the second end of the first bracket. When the filter element 40 is located at the second position, the second end of the connecting line 572 passes around the first guide shaft 5611 and is connected to the second end of the filter element 40.

[0123] For example, the plurality of guide shafts 561A further includes a second guide shaft 5612. The second guide shaft 5612 is located between the first guide shaft 5611 and the reel assembly 52. ​​When the filter element 40 is in the second position, the second end of the connecting line 572 passes through the first guide shaft 5611 and the second guide shaft 5612 and is connected to the second end of the filter element 40.

[0124] The first guide shaft 5611 protrudes from the side of the first bracket 56A along the length direction B of the shell 101, and the second guide shaft 5612 protrudes from the side of the first bracket 56A along the length direction B of the first bracket 56A. The first guide shaft 5611, the second guide shaft 5612 and the tensioning assembly 57 are arranged on the same side of the first bracket 56A.

[0125] When the filter element 40 is in the first position, the second end of the connecting wire 572 bypasses the first guide shaft 5611 and connects to the second end of the filter element 40, applying a tensile force to the second end of the filter element 40, keeping the filter element 40 taut in the first position. As the filter element 40 moves from the first position to the second position, the force exerted on the filter element 40 by the reel assembly 52 exceeds the tensile force exerted by the connecting wire 572 on the filter element 40, causing the filter element 40 to wind around the outer periphery of the reel assembly 52. ​​The second end of the filter element 40 moves along the first bracket 56A to a position close to the reel assembly 52, where the second end of the connecting wire 572 bypasses the first guide shaft 5611 and the second guide shaft 5612 to connect to the filter element 40. The connecting wire 572 extends as the filter element 40 moves, keeping the filter element 40 taut in the second position. This prevents wrinkles in the filter element 40 during the winding process, thereby extending the service life of the filter element 40.

[0126] It can be understood that the first guide shaft 5611 and the second guide shaft 5612 can provide guidance for the connecting wire 572 as it moves with the filter element 40, making it easier for the connecting wire 572 to change direction, thereby helping to improve the stability of the movement of the connecting wire 572 and the filter element 40, and preventing the connecting wire 572 from getting entangled during movement.

[0127] In some embodiments, the tensioning assembly 57 includes one or more tensioning assembly bodies 571 .

[0128] In some embodiments, the tensioning assembly 57 includes one or more connecting wires 572 corresponding to one or more tensioning assembly bodies 571. The tensioning assembly body 571 is disposed on at least one side along the length direction B of the first bracket 56A.

[0129] In some embodiments, as shown in FIG. 5 and FIG. 7 , the first guide shaft 5611 and the second guide shaft 5612 are cylindrical, that is, the cross-sections of the first guide shaft 5611 and the second guide shaft 5612 are circular.

[0130] It is understood that during movement, the connecting wire 572 will generate relative friction with the first guide shaft 5611 and the second guide shaft 5612. Therefore, by configuring the first guide shaft 5611 and the second guide shaft 5612 as cylindrical bodies, the friction between the first guide shaft 5611 and the second guide shaft 5612 and the connecting wire 572 can be reduced, thereby facilitating smoother movement of the filter element 40 and extending the service life of the connecting wire 572. The first guide shaft 5611 and the second guide shaft 5612 also facilitate guiding the connecting wire 572 to change the direction of movement of the connecting wire 572.

[0131] In some embodiments, the cross-sectional area of ​​the first guide shaft 5611 is smaller than the cross-sectional area of ​​the second guide shaft 5612. The first guide shaft 5611 is located at the end of the first bracket 56A away from the reel assembly 52. ​​When the connecting wire 572 passes around the first guide shaft 5611, the angle of movement changes by approximately 180 degrees. Therefore, when the cross-sectional area of ​​the first guide shaft 5611 is smaller, it is easier for the connecting wire 572 to turn.

[0132] The second guide shaft 5612 is located between the first guide shaft 5611 and the reel assembly 52. ​​The change in the angle of movement of the connecting wire 572 when it passes around the second guide shaft 5612 is less than 90 degrees. Therefore, when the cross-sectional area of ​​the second guide shaft 5612 is large, it is convenient for the connecting wire 572 to make a small angle (e.g., less than 90 degrees) of turning.

[0133] It can be understood that the cross-sectional area of ​​the first guide shaft 5611 is smaller than the cross-sectional area of ​​the second guide shaft 5612, which can make the movement of the connecting line 572 more stable and smooth.

[0134] In some embodiments, as shown in Figures 4, 5, and 7, the tensioning assembly body 571 includes a second bracket 5711 (ie, a telescopic bracket). The second bracket 5711 is disposed within the first bracket 56A.

[0135] In some embodiments, the tensioning assembly body 571 further includes a connector 5712 (i.e., a telescopic connector). The connector 5712 is disposed within the second bracket 5711. The first end of the connecting wire 572 is wound around the connector 5712. The connector 5712 is configured to apply a force to the connecting wire 572 such that the direction of the tension exerted on the filter element 40 by the connecting wire 572 is opposite to the direction of the tension exerted on the filter element 40 by the reel assembly 52.

[0136] In some embodiments, as shown in FIG6 , the second bracket 5711 includes a first accommodating cavity 5710. A connector 5712 is installed in the first accommodating cavity 5710. A through hole is formed on a side wall of the second bracket 5711 corresponding to the connecting wire 572. The through hole penetrates the side wall of the second bracket 5711. The first end of the connecting wire 572 is located in the first accommodating cavity 5710 and connected to the connector 5712. The second end of the connecting wire 572 passes through the through hole to connect to the filter element 40.

[0137] For example, the connector 5712 includes an elastic member, and the connector 5712 can switch between a first state (i.e., a contracted state) and a second state (i.e., an extended state). The first end of the connecting line 572 is wound around the connector 5712, and the second end of the connecting line 572 is connected to the filter element 40.

[0138] When the filter element 40 is in the first position, the connector 5712 is in the first state, and a portion of the connection line 572 is wound around the connector 5712 and located inside the second bracket 5711. The portion of the connection line 572 located outside the second bracket 5711 passes around the first guide shaft 5611 and is connected to the filter element 40.

[0139] When the filter element 40 is in the second position, the connector 5712 is in the second state, and a portion of the connecting line 572 wound on the connector 5712 is released under the action of the pulling force of the reel assembly 52, and the portion of the connecting line 572 located outside the second bracket 5711 grows, and this portion bypasses the first guide shaft 5611 and the second guide shaft 5612 to connect with the filter element 40.

[0140] Therefore, the second bracket 5711 is configured to install the connector 5712 and the connecting line 572. The second bracket 5711 can provide protection for the connector 5712, which is conducive to improving the stability of the operation of the connector 5712 and the connecting line 572. The connector 5712 can adjust the length of the connecting line 572 located outside the second bracket 5711 and continuously apply tension to the filter element 40 to keep the filter element 40 in a tensioned state.

[0141] In some embodiments, as shown in FIG3 , along the thickness direction H of the first bracket 56A, a surface of the first bracket 56A facing the filter element 40 is recessed away from the filter element 40 to form a first receiving groove 562A, and the first receiving groove 562A is open toward the filter element 40. The tensioning assembly 57 is disposed in the first receiving groove 562A, or at least a portion of the tensioning assembly 57 is disposed in the first receiving groove.

[0142] It is understandable that the first receiving groove 562A can provide protection for the tensioning assembly 57 to facilitate stable operation of the tensioning assembly 57. The tensioning assembly 57 is disposed in the first receiving groove 562A, which is conducive to improving the integration of the first bracket 56A and the tensioning assembly 57 and simplifying the structure of the self-cleaning device 50.

[0143] In some embodiments, as shown in Figures 3 and 6, the indoor unit 1 further includes a clamping member 41. The clamping member 41 extends along the length direction B of the first bracket 56A. The clamping member 41 is connected to the second end of the filter element 40, thereby keeping the filter element 40 in a tensioned state in the length direction B of the first bracket 56A. The clamping member 41 is also connected to the connecting line 572. For example, the clamping member 41 is provided with a connecting portion at one end along the length direction B of the first bracket 56A, and the connecting portion is configured to be connected to the connecting line 572. In this way, when the filter element 40 and the connecting line 572 move relative to the first bracket 56A, the clamping member 41 moves relative to the first bracket 56A along with the movement of the filter element 40.

[0144] It can be understood that the setting of the clamping member 41 facilitates the filter element 40 to maintain a tensioned state in the length direction B of the first bracket 56A. The clamping member 41 is connected to the tensioning assembly 57, which facilitates the tensioning assembly 57 to apply a pulling force to the filter element 40 through the clamping member 41 to ensure that the filter element 40 maintains a tensioned state in the direction of movement, thereby ensuring the filtering effect of the filter element 40 on dust in the air.

[0145] In some embodiments, as shown in FIG3 and FIG6 , the first bracket 56A further includes a first bracket body 563A. The first bracket body 563A is disposed between the air inlet 102 and the indoor heat exchanger 105 .

[0146] In some embodiments, the first bracket 56A further includes a first assembly portion 564A (i.e., a first mounting plate). The first bracket 56A further includes a second assembly portion 565A (i.e., a second mounting plate). The first assembly portion 564A and the second assembly portion 565A are respectively connected to two sides of the first bracket body 563A along the length direction B of the housing 101.

[0147] In some embodiments, a recessed portion 566A is formed on the surfaces of the first and second mounting portions 564A, 565A that face each other. The recessed portions 566A of the first and second mounting portions 564A, 565A extend along the directions in which the first and second mounting portions 564A, 565A extend, respectively. The longitudinal ends of the clamping member 41 are located within the recessed portions 566A of the first and second mounting portions 564A, 565A, respectively. When the filter element 40 moves between the first and second positions, the clamping member 41 is movable within the recessed portions 566A.

[0148] For example, the first mounting portion 564A and the second mounting portion 565A extend along the direction of movement of the filter element 40. A side surface of the first mounting portion 564A facing the second mounting portion 565A is recessed in a direction away from the second mounting portion 565A to form a recessed portion 566A. The recessed portion 566A extends along the extension direction of the first mounting portion 564A (i.e., along the direction of movement of the filter element 40). A side surface of the second mounting portion 565A facing the first mounting portion 564A is recessed in a direction away from the first mounting portion 564A to form a recessed portion 566A. The recessed portion 566A extends along the extension direction of the second mounting portion 565A (i.e., along the direction of movement of the filter element 40). The recessed portion 566A of the first mounting portion 564A and the recessed portion 566A of the second mounting portion 565A are opposed to each other along the length direction B of the first bracket 56A.

[0149] In some embodiments, the first bracket body 563A is formed with a vent 5631 (i.e., an opening) to facilitate ventilation. The vent 5631 extends through the first bracket body 563A along the thickness direction H of the first bracket 56A. When the filter element 40 is in the first position, the filter element 40 corresponds to the position of the first bracket body 563A and covers the vent 5631.

[0150] It will be appreciated that the provision of the first assembly portion 564A and the second assembly portion 565A facilitates the installation of the filter element 40 and the clamping member 41. The recessed portion 566A guides the movement of the clamping member 41, thereby improving the stability of the fit between the clamping member 41 and the first bracket 56A, enhancing the stability of the filter element 40 during movement relative to the first bracket body 563A, and preventing the filter element 40 from falling off the first bracket 56A. The clamping member 41 can maintain tension in the longitudinal direction B of the first bracket 56A during movement of the filter element 40, thereby facilitating the filter element 40 to filter dust from the air.

[0151] 3 , the first bracket 56A further includes a plurality of partitions 569A disposed in the vent 5631 and spaced apart along the direction of movement of the filter element 40 . The partitions 569A extend along the length direction B of the housing 101 .

[0152] Multiple partitions 569A divide the vent 5631 into multiple sub-vents 5632 (i.e., sub-openings). When the filter element 40 is in the first position, the clamping member 41 moves to the end of the first bracket 56A away from the reel assembly 52, and the filter element 40 covers the multiple sub-vents 5632 to facilitate the filter element 40 to filter dust in the air. The multiple partitions 569A jointly support the filter element 40, so that the first bracket 56A is evenly stressed, which is beneficial to improving the reliability of the first bracket 56A.

[0153] When the filter element 40 is located at the second position, the filter element 40 is wound on the reel assembly 52 , and the filter element 40 and the clamping member 41 avoid the plurality of sub-ventilation openings 5632 .

[0154] In this way, the plurality of sub-ventilation openings 5632 are in an open state, so that the air entering the air inlet 102 can enter the housing 101 without passing through the filter element 40, thereby facilitating an increase in the air intake volume.

[0155] It is understandable that by providing multiple partitions 569A on the first bracket 56A, it is beneficial to improve the structural strength of the first bracket 56A, improve the supporting force of the first bracket 56A on the filter element 40, and further improve the stability of the movement of the filter element 40.

[0156] 3 , the first bracket body 563A includes a first segment 567A. The first segment 567A extends horizontally.

[0157] In some embodiments, the first bracket body 563A further includes a second segment 568A. Along the movement direction of the filter element 40, a first end of the second segment 568A is positioned adjacent to the reel, a second end (e.g., rear end) of the second segment 568A is connected to a first end (e.g., front end) of the first segment 567A, and the second end of the first segment 567A extends horizontally (e.g., horizontally and rearwardly).

[0158] The first fitting portion 564A is adapted to the shapes of the first segment 567A and the second segment 568A, and the second fitting portion 565A is adapted to the shapes of the first segment 567A and the second segment 568A.

[0159] For example, the first section 567A and the second section 568A form an angle, wherein the first section 567A extends horizontally, the rear end of the second section 568A is connected to the front end of the first section 567A, and the front end of the second section 568A extends obliquely downward to a position close to the reel.

[0160] In some embodiments, the plurality of partitions 569A include a first partition 569A1 . The first partition 569A1 is provided in the first segment 567A and is located at an end of the first segment 567A away from the reel assembly 52 .

[0161] In some embodiments, the plurality of dividers 569A further includes a second divider 569A2 located at a junction of the first segment 567A and the second segment 568A.

[0162] In some embodiments, the plurality of dividers 569A further includes a third divider 569A3. The first divider 569A1 is located further away from the reel than the third divider 569A3. The second divider 569A2 is located between the first divider 569A1 and the third divider 569A3. The third divider 569A3 is provided in the second section 568A at an end of the first bracket body 563A that is closer to the reel assembly 52.

[0163] For example, the cross-sectional area of ​​the second spacer 569A2 is greater than the cross-sectional area of ​​the third spacer 569A3 , and the cross-sectional area of ​​the third spacer 569A3 is greater than the cross-sectional area of ​​the first spacer 569A1 .

[0164] This facilitates installation of the filter element 40 on the first bracket 56A. The provision of the first partition 569A1, the second partition 569A2, and the third partition 569A3 can enhance the structural strength of the first bracket 56A. Increasing the cross-sectional area of ​​the second partition 569A2 can also improve the connection strength between the first section 567A and the second section 568A.

[0165] In some embodiments, as shown in FIG3 , the indoor unit 1 includes two self-cleaning devices 50. The two self-cleaning devices 50 are spaced apart and disposed within the housing 101 along the longitudinal direction B of the housing 101. The self-cleaning devices 50 are located near the front side of the housing 101, and the base 51 of the self-cleaning device 50 is detachably connected to the housing 101. It should be noted that the detachable connection between the base 51 and the housing 101 may include, but is not limited to, a snap-on connection, a plug-in connection, or a threaded connection.

[0166] The reel assembly 52 can rotate clockwise or counterclockwise under the drive of the motor. For example, when the reel assembly 52 rotates clockwise, the filter element 40 moves from the second position to the first position. During the movement of the filter element 40, the filter element 40 maintains tension by utilizing the elastic contraction capability of the tensioning assembly body 571 within the tensioning assembly 57.

[0167] During the movement of the filter element 40 from the first position to the second position, the reel assembly 52 rotates counterclockwise to drive the filter element 40 to be wound around the reel assembly 52. ​​In this case, the force applied by the reel assembly 52 on the filter element 40 can overcome the tension applied by the tensioning assembly 57 on the filter element 40, thereby keeping the filter element 40 in a tensioned state while being wound, facilitating cleaning of the filter element 40 by the cleaning brush assembly 53. In addition, the tensioning assembly 57 has a simple structure, which facilitates optimizing the space inside the base 51 and increasing the utilization rate of the space inside the base 51.

[0168] In some embodiments, as shown in FIG8 , the indoor unit 1 further includes a panel 500 . The panel 500 is detachably connected to the housing 101 and is configured to provide protection for components such as the indoor heat exchanger 105 and the fan assembly 30 . For example, the panel 500 is located on the front side of the housing 101 .

[0169] In some embodiments, as shown in FIG9 , the self-cleaning device 50 (filter self-cleaning module) is detachably mounted within the housing 101, and the first receiving portion 55 is detachably connected to the cleaning brush assembly 53 (filter cleaning portion). Thus, when the panel 500 is removed from the housing 101, the self-cleaning device 50 is exposed forward, making it easier to remove the self-cleaning device 50 from the housing 101 and to clean dust stored in the first receiving portion 55 (dust receiving portion).

[0170] In some embodiments, as shown in Figures 10 and 13, the housing 101 includes at least one mounting assembly 20. The mounting assembly 20 is a portion of a side wall of the housing 101 facing the panel 500. The mounting assembly 20 is recessed away from the panel 500 to form a mounting cavity 21. The mounting cavity 21 is open toward the panel 500.

[0171] In some embodiments, as shown in FIG8 , the indoor unit 1 further includes at least one mating component 100. The at least one mating component 100 is correspondingly disposed in the at least one installation cavity 21. The panel 500 is detachably connected to the housing 101 via the at least one mating component 100.

[0172] In some embodiments, as shown in FIG11 , the panel 500 includes a panel body 510 . The panel 500 also includes at least one engaging portion 520 (i.e., a rotating hook). The at least one engaging portion 520 is disposed on a side surface of the panel body 510 near the housing 101 and corresponds to the at least one mating component 100 . The at least one engaging portion 520 is correspondingly disposed in the at least one mating component 100 to detachably connect the panel 500 to the housing 101 .

[0173] 8 , the mounting assembly 20 is located above the housing 101, and the clip 520 is located above the panel body 510. When the panel 500 is opened, the panel 500 rotates around the end of the clip 520, so that the panel 500 can be rotated above the housing 101.

[0174] It can be understood that the installation component 20 is located at the upper part of the shell 101, and the clamping part 520 is located at the upper part of the panel 500, so that the rotation angle of the panel 500 can be increased, and the panel 500 can be rotated to the top of the shell 101, thereby facilitating the cleaning, inspection and maintenance of the internal components of the shell 101.

[0175] Below, for the convenience of description, as shown in Figure 10, the width direction of the indoor unit 1 (i.e., the front-to-back direction) is defined as the first direction A, the length direction of the indoor unit 1 (i.e., the left-to-right direction) is defined as the second direction B, and the height direction of the indoor unit 1 (i.e., the up-down direction) is defined as the third direction C.

[0176] 12 , the mating assembly 100 includes a slider 10 . The slider 10 is disposed in the mounting cavity 21 and configured to mate with the mounting cavity 21 and be movable relative to the housing 101 between a third position and a fourth position.

[0177] For example, the slider 10 can move along the first direction A in the installation cavity 21 .

[0178] In some embodiments, as shown in FIG12 , the slider 10 includes a slider body 18 . The sidewall of the slider body 18 is formed with at least one first hole 11 (i.e., a pivot hole). The at least one first hole 11 corresponds to at least one engaging portion 520 . The engaging portion 520 is disposed in the first hole 11 and is rotatable relative to the first hole 11 .

[0179] For example, the first hole 11 is located on a side wall of the installation cavity 21 along the second direction B, and passes through the side wall of the installation cavity 21 along the second direction B.

[0180] When the slider 10 is in the third position, the panel 500 closes the front side of the housing 101, and the end of the engaging portion 520 is disposed in the first hole 11. The engaging portion 520 is rotatable relative to the first hole 11. When the engaging portion 520 rotates in the first hole 11 to drive the panel 500 to rotate and open the front side of the housing 101, the slider 10 moves from the third position to the fourth position.

[0181] In some embodiments, as shown in FIG12 , the slider 10 further includes a first limiting portion 12 (a first slider limiting structure). The first limiting portion 12 is provided on the outer wall of the slider body 18 along the second direction B and protrudes from the outer wall of the slider body 18 .

[0182] In some embodiments, as shown in Figures 13 and 14, the housing 101 further includes a first mating portion 22 (a first mounting limiting structure). The first mating portion 22 is disposed on the inner wall surface of the mounting assembly 20 along the second direction B (the inner wall surface of the mounting cavity 21). The first mating portion 22 is located on a side of the first limiting portion 12 that is close to the panel 500. The first mating portion 22 is configured to apply a force to the snap-fit ​​portion 520 when the snap-fit ​​portion 520 rotates, so as to disengage the snap-fit ​​portion 520 from the first hole 11, and to abut against the first mating portion 22 when the slider 10 moves to the fourth position, so as to prevent the slider 10 from falling out of the mounting cavity 21.

[0183] In this way, when the slider 10 moves to the fourth position, the clamping portion 520 disengages from the first hole 11 under the action of the first matching portion 22, so that the panel 500 can be removed from the shell 101, and the first limiting portion 12 and the first matching portion 22 abut to prevent the slider 10 from falling out of the installation cavity 21.

[0184] In some embodiments, as shown in Figures 16, 23, and 24, a portion of the end portion of the engaging portion 520 disposed within the first hole 11 is configured as a third guide portion 524 (an inclined surface). The third guide portion 524 is configured to cooperate with the first mating portion 22 when the engaging portion 520 rotates, causing the end portion of the engaging portion 520 located within the first hole 11 to disengage from the first hole 11.

[0185] For example, when the clamping portion 520 rotates, the third guide portion 524 rotates and squeezes the first matching portion 22 driven by the clamping portion 520. Then, the third guide portion 524 is deformed under the action of the reaction force of the first matching portion 22 and disengages from the first hole 11, thereby separating the clamping portion 520 from the slider 10.

[0186] In some embodiments, when the slider 10 is in the third position, the end of the slider 10 away from the panel 500 abuts against the inner sidewall of the mounting assembly 20 away from the panel 500, the first engaging portion 22 is located on the side of the first limiting portion 12 closer to the panel 500, the end of the engaging portion 520 is located within the first hole 11, and the panel 500 is in the closed state. When the slider 10 is in the fourth position, the slider 10 is separated from the inner sidewall of the mounting assembly 20 away from the panel 500, and the first limiting portion 12 abuts against the first engaging portion 22 to prevent the slider 10 from falling out of the mounting cavity 21.

[0187] It can be understood that the mating assembly 100 can simplify the installation and disassembly of the panel 500, thereby helping to improve the stability and reliability of the movement of the panel 500 relative to the housing 101 and facilitating operation by maintenance personnel.

[0188] In some embodiments, as shown in FIG15 , the housing 101 further includes a second mating portion 23 (a second mounting limit structure). The second mating portion 23 is disposed on the inner top wall of the mounting assembly 20 (the top wall of the mounting cavity 21 ), and is an elastic member. This can apply a downward force to the slider 10 , thereby improving the stability of the slider 10 in its movement within the mounting cavity 21 .

[0189] For example, the fixed end of the second mating portion 23 is fixedly connected to the inner top wall of the mounting assembly 20, and the free end of the second mating portion 23 extends away from the panel 500. The free end of the second mating portion 23 can be elastically deformed along the third direction C compared to its fixed end.

[0190] In some embodiments, as shown in FIG12 , the slider 10 further includes a second stopper 13 (a second slider stopper structure). The second stopper 13 is located at the top of the slider body 18 and corresponds to the position of the second mating portion 23. When the slider 10 is in the third position, the second stopper 13 abuts against the side of the second mating portion 23 away from the panel 500, preventing the slider 10 from falling out of the mounting cavity 21.

[0191] In some embodiments, as shown in FIG16 , the clamping portion 520 includes an abutment portion 525 (protrusion). The abutment portion 525 is provided on a side wall of the clamping portion 520 close to the top wall of the mounting cavity 21. For example, the abutment portion 525 is provided on the top wall of the clamping portion 520.

[0192] When the engaging portion 520 rotates in the first hole 11 to drive the panel 500 to open the front side of the housing 101, the end of the engaging portion 520 close to the panel body moves upward, driving the abutting portion 525 to move upward. In this case, the abutting portion 525 abuts against the top wall of the mounting assembly 20, exerting an upward force on the top wall of the mounting assembly 20 and causing the engaging portion 520 to exert a downward reaction force on the slider 10. Under the action of this reaction force, the slider 10 moves downward, separating the second limiting portion 13 from the second matching portion 23 and releasing the limiting effect of the second matching portion 23 on the second limiting portion 13, thereby allowing the slider 10 to move along the first direction A from the third position to the fourth position.

[0193] Thus, the second engaging portion 23 and the second limiting portion 13 can limit the position of the mounting cavity 21 on the slider 10, preventing the slider 10 from sliding out of the mounting cavity 21 due to factors such as gravity when the slider 10 is in the third position. Furthermore, the abutting portion 525 of the clamping portion 520 abuts against the top wall of the mounting cavity 21, facilitating the transmission of the force of the clamping portion 520 to the slider 10, thereby releasing the second engaging portion 23 from limiting the position of the second limiting portion 13 and facilitating movement of the slider 10 from the third position to the fourth position.

[0194] In some embodiments, as shown in FIG. 15 , a portion of a side wall of the mounting assembly 20 away from the panel 500 (a side wall of the mounting cavity 21 away from the panel 500 ) is opened to form a third opening 25 .

[0195] In some embodiments, a portion of the bottom wall of the mounting assembly 20 is opened to form a fourth opening 26 , which is in communication with the third opening 25 .

[0196] In some embodiments, the housing 101 further includes a third mating portion 24 (a third installation limiting structure) connected to the bottom wall of the installation assembly 20 and located in the fourth opening 26 .

[0197] For example, a first end of the third mating portion 24 is connected to the bottom wall of the housing 101, and a second end of the third mating portion 24 extends in a direction away from the panel 500. The third mating portion 24 can be elastically deformed.

[0198] In some embodiments, the third mating portion 24 is spaced apart from a top wall of the third opening 25 (a lower end of a rear wall of the mounting assembly 20 ).

[0199] For example, the third opening 25, the fourth opening 26, and the third mating portion 24 collectively define a second hole 27 (a position-limiting hole). For example, the third mating portion 24 is spaced apart from the top wall of the third opening 25 to define the second hole 27. For example, the fourth opening 26 communicates with the third opening 25 to form the second hole 27.

[0200] In some embodiments, as shown in FIG17 , the slider 10 includes a third position-limiting portion 14 (a third slider position-limiting structure) disposed at the bottom of the slider body 18 and engaged with the second hole 27 .

[0201] For example, when the slider 10 is located at the third position, the third limiting portion 14 is located in the second hole 27 , and the second end of the third matching portion 24 abuts against the third limiting portion 14 .

[0202] For example, when the slider 10 moves downward under the force from the clamping portion 520, the third matching portion 24 is also subjected to a downward force and elastically deforms and moves downward along the third direction C, so that the third matching portion 24 and the third limiting portion 14 are disengaged from the stop, and the third limiting portion 14 is separated from the second hole 27.

[0203] Thus, the third opening 25, the fourth opening 26, and the third mating portion 24 of the mounting cavity 21 collectively define a second hole 27 that mates with the third limiting portion 14. When the slider 10 is in the third position, the third mating portion 24 can limit the slider 10 to prevent it from falling out of the mounting cavity 21, and the third mating portion 24 can elastically deform to facilitate movement of the slider 10 from the third position to the fourth position.

[0204] In some embodiments, as shown in FIG18 , the mating assembly 100 further includes at least one second stop 107. The second stop 107 is disposed between a side wall of the mounting assembly 20 facing away from the panel 500 (i.e., a side wall of the mounting cavity 21 facing away from the panel 500) and the slider 10, and extends along the first direction A. A first end of the second stop 107 abuts against the rear wall of the mounting assembly 20, and a second end of the second stop 107 abuts against the slider 10. The second stop 107 is configured to apply a force to the slider 10 toward the panel 500. For example, the second stop 107 is a spring.

[0205] When the slider 10 is in the third position, the second limiting portion 13 abuts against the second matching portion 23, and the third limiting portion 14 abuts against the third matching portion 24. The slider 10 is limited and fixed in the installation cavity 21, and the second blocking portion 107 is in a compressed state.

[0206] When the slider 10 is subjected to a downward force under the action of the clamping portion 520, the second limiting portion 13 is separated from the second matching portion 23, the third limiting portion 14 is separated from the third matching portion 24, and the second resisting portion 107 changes from the compressed state to the second state. The slider 10 moves toward the direction close to the panel 500 under the action of the second resisting portion 107.

[0207] When the slider 10 moves to the fourth position, the first limiting portion 12 abuts against the first matching portion 22 , and the slider 10 stops moving.

[0208] Therefore, a second stop portion 107 is provided between the rear wall of the mounting assembly 20 and the slider 10, so that no additional force needs to be applied to the slider 10 during the movement of the slider 10 from the third position to the fourth position, thereby facilitating maintenance personnel to open the panel 500 and improving the convenience of disassembly and installation of the panel 500 and the shell 101.

[0209] In some embodiments, as shown in Figures 17 and 18, at least one second receiving groove 15 is formed on a side wall of the slider 10 near the second stop portion 107. The second receiving groove 15 is open toward the second stop portion 107 and recessed toward the direction away from the second stop portion 107. The second end of the second stop portion 107 abuts against the bottom of the second receiving groove 15.

[0210] In some embodiments, as shown in Figures 18 and 19 , the housing 101 further includes at least one first guide portion 28 (a guide structure). The first guide portion 28 is disposed on the rear wall of the mounting assembly 20 and extends toward the panel 500. The first guide portion 28 cooperates with the second receiving slot 15.

[0211] For example, the shape of the second receiving groove 15 is adapted to the shape of the first guide portion 28 , so that when the slider 10 is located at the third position, the first guide portion 28 is fitted into the second receiving groove 15 .

[0212] In some embodiments, the first guide portion 28 includes a first sub-guide portion 281 (a guide groove), and the first end of the second blocking portion 107 abuts against the first sub-guide portion 281 .

[0213] In some embodiments, the first sub-guide portion 281 is a guide groove, for example, the side of the first guide portion 28 facing the panel 500 is open to form a guide groove. The first end of the second stopper 107 abuts against the bottom of the guide groove.

[0214] In some embodiments, the first guide portion 28 further includes a second sub-guide portion 282 (a guide post). The second sub-guide portion 282 is disposed at the bottom of the groove of the first sub-guide portion 281 and extends toward the panel 500. The second stop portion 107 fits within the first sub-guide portion 281 and is sleeved on the outside of the second sub-guide portion 282.

[0215] For example, the second sub-guide portion 282 is a cylinder, and a portion of the groove bottom of the first sub-guide portion 281 protrudes toward a direction close to the panel 500 to form the second sub-guide portion 282 .

[0216] Therefore, the provision of the second receiving groove 15 and the first guide portion 28 facilitates the sliding fit between the slider 10 and the mounting assembly 20 , thereby facilitating improvement in the stability and reliability of the movement of the slider 10 in the mounting cavity 21 .

[0217] It can be understood that the first sub-guide portion 281 is configured to accommodate the second resisting portion 107. The first sub-guide portion 281 plays a limiting and protective role on the second resisting portion 107. The second sub-guide portion 282 can be a deformation guide direction for the second resisting portion 107, so that the deformation process of the second resisting portion 107 is easy to achieve, and prevents the second resisting portion 107 from twisting or bending, etc., and prevents the second resisting portion 107 from irreversible deformation, thereby extending the service life of the second resisting portion 107 and enhancing the movement stability of the mating component 100.

[0218] Hereinafter, the installation process of the mating component 100 will be described with reference to FIG. 12 to FIG. 17 .

[0219] First, the second retaining portion 107 is placed on the outside of the second sub-guide portion 282, and the slider 10 is pushed into the installation cavity 21 along the first direction A. As the slider 10 moves in the installation cavity 21 along the first direction A toward the second retaining portion 107, the first limiting portion 12 of the slider 10 moves relative to the first mating portion 22, and the first mating portion 22 elastically deforms away from the slider 10. The second limiting portion 13 moves relative to the second mating portion 23, and the second mating portion 23 elastically deforms upward. The third limiting portion 14 moves relative to the third mating portion 24, and the third mating portion 24 elastically deforms downward, facilitating the sliding of the slider 10 into the installation cavity 21.

[0220] Then, when the slider 10 moves to the third position, the slider 10 abuts against the rear wall of the mounting assembly 20, and the second retaining portion 107 is compressed. The first, second, and third retaining portions 22, 23, and 24 return to their original positions, with the second retaining portion 23 abutting against the second stopper 13, and the third retaining portion 24 abutting against the third stopper 14, thereby removably mounting the slider 10 in the mounting cavity 21.

[0221] In some embodiments, as shown in FIG16 , the clamping portion 520 further includes a first support portion 523 (a clamping portion support structure). The first support portion 523 is provided on a side wall of the clamping portion 520 along the second direction B.

[0222] In the following embodiment, as shown in FIG12 , the slider 10 further includes a second support portion 16 (a slider support structure). The second support portion 16 is disposed on the inner sidewall of the slider 10 along the second direction B. The second support portion 16 protrudes toward the interior of the slider 10 and extends along the first direction A. The second support portion 16 is configured to provide support for the first support portion 523. This allows the first support portion 523 to rest on the second support portion 16 during the opening of the panel 500, thereby facilitating maintenance personnel's inspection of the indoor unit.

[0223] For example, when the locking portion 520 drives the panel 500 to open the front side of the housing 101 , the lower surface of the first supporting portion 523 abuts against the upper surface of the second supporting portion 16 .

[0224] Thus, the first support portion 523 cooperates with the second support portion 16 , and the second support portion 16 can support the first support portion 523 , so that the panel 500 stops at a predetermined position when opened, which is convenient for maintenance personnel to operate.

[0225] In some embodiments, the slider 10 further includes a fifth opening 17. The fifth opening 17 is provided on a sidewall of the slider body 18 along the second direction B and extends through the sidewall of the slider body 18. The fifth opening 17 is located above the second support portion 16 and opens toward the panel 500, thereby allowing the second support portion 16 to elastically deform along the third direction C.

[0226] In some embodiments, as shown in Figures 13 and 14 , the housing 101 further includes at least one second guide portion 29 (guide rib). The at least one second guide portion 29 is disposed on at least one sidewall of the mounting assembly 20 (mounting cavity 21 ). The second guide portion 29 extends in the first direction A and is configured to support the slider 10 so that the slider 10 can move along the extension direction of the second guide portion 29.

[0227] For example, the second guide portion 29 is disposed on a side wall of the mounting assembly 20 along the second direction B and protrudes toward the interior of the mounting cavity 21 .

[0228] For example, the slider is provided on the at least one second guide portion and is movable along the width direction of the housing relative to the at least one second guide portion.

[0229] Therefore, the second guide portion 29 can provide guiding and supporting functions for the slider 10 when it moves along the first direction A in the installation cavity 21, and can provide limiting function for the slider 10 in the third direction C, thereby helping to improve the stability of the slider 10 moving in the installation cavity 21.

[0230] Hereinafter, the working principle of the mating assembly 100 will be described with reference to FIG. 18 and FIG. 20 to FIG. 24 .

[0231] First, when the panel 500 is in the closed state, the slider 10 is located in the installation cavity 21 and is in the third position. The second stopper 107 is in a compressed state, and the clamping portion 520 is engaged with the first hole 11 .

[0232] When the panel 500 is opened, the panel 500 rotates about the end of the clamping portion 520 disposed in the first hole 11. As the panel 500 is opened upward under the action of an external force, the abutting portion 525 on the clamping portion 520 abuts against the top wall of the mounting assembly 20. The top wall of the mounting assembly 20 is subjected to the force from the abutting portion 525, and the second engaging portion 23 moves upward under the action of this force, thereby disengaging from the abutment with the second stopper 13.

[0233] In this case, the engaging portion 520 is subjected to a downward reaction force, which is transmitted to the slider 10 through the first hole 11. The slider 10 is subjected to a downward force. Under the action of this downward force, the third engaging portion 24 moves downward, thereby disengaging from the abutment with the third limiting portion 14.

[0234] Next, the slider 10 is no longer restricted by the second and third mating portions 23 and 24 and can move in the first direction A. The second retaining portion 107 releases its elastic potential energy, transitioning from the compressed state to the second state. Under the action of the second retaining portion 107, the slider 10 moves within the mounting cavity 21 in the first direction A toward the panel 500. The third guide portion 524 of the engaging portion 520 engages with the first mating portion 22, causing the engaging portion 520 to retract toward the interior of the slider 10 and disengage from the first hole 11 of the slider 10, thereby completely removing the panel 500.

[0235] After the panel 500 is released, the slider 10 continues to move toward the panel 500 under the action of the second stop portion 107 until the first limiting portion 12 abuts against the first matching portion 22 . The slider 10 is limited by the first matching portion 22 and stops moving.

[0236] When installing the panel 500 in the housing 101, the engaging portion 520 of the panel 500 is installed in the slider 10, and a force is applied to the panel 500 to move the engaging portion 520 toward the second stop 107. Driven by the engaging portion 520, the slider 10 moves within the mounting cavity 21 toward the second stop 107. The first stop 12 separates from the first mating portion 22, and the free end of the second mating portion 23 deforms upward under the action of the slider 10, whereupon the second stop 13 abuts against the second mating portion 23. Furthermore, the third mating portion 24 deforms downward under the action of the slider 10, whereupon the third stop 14 abuts against the third mating portion 24. The second stop 107 transitions from the second state to the compressed state, and the end of the engaging portion 520 fits within the first hole 11 of the slider 10. The panel 500 is now installed and in a closed state.

[0237] In some embodiments, as shown in Figures 8 and 10, the at least one mounting assembly 20 includes two mounting assemblies 20. The two mounting assemblies 20 define mounting cavities 21. The two mounting assemblies 20 are respectively disposed near the two ends (left end and right end) of the housing 101 along the second direction B.

[0238] In some embodiments, as shown in Figures 8 and 11 , the at least one clamping portion 520 includes two clamping portions 520. The two clamping portions 520 are provided on a side surface of the panel body 510 near the housing 101 and correspond to the positions of the two mounting assemblies 20. For example, the two clamping portions 520 are respectively located near the left and right ends of the panel body 510.

[0239] In some embodiments, the at least one mating component 100 includes two mating components 100. The two clamping portions 520 are detachably mated with the two mounting components 20 through the two mating components 100, respectively.

[0240] It can be understood that the two mounting components 20 are respectively located near the left and right ends of the shell 101, and the two clip-on portions 520 correspond to the positions of the two mounting components 20, thereby facilitating the coordination between the mounting cavity 21 and the clip-on portions 520, and is beneficial to improving the reliability of the connection between the panel 500 and the shell 101.

[0241] It will be appreciated that the mounting assembly 20 for mounting the panel 500 is constructed from a portion of the housing 101. In some embodiments, the air conditioner further includes a mounting base disposed within the housing 101 and separately from the housing 101. The mounting base 20A defines a mounting cavity 21, and the structure and function of the mounting base 20A are substantially the same as those of the mounting assembly 20. This facilitates replacement of the mounting base 20A in the event of failure or damage to components or structures within the mounting base 20A, thereby improving maintenance efficiency and reducing maintenance costs for the indoor unit.

[0242] In some embodiments, as shown in FIG. 10 , a portion of a surface of the housing 101 facing the panel 500 is recessed away from the panel 500 to form at least one second accommodating cavity 201 , which is open toward the panel 500 .

[0243] In some embodiments, as shown in Figures 8 and 13 , the mating assembly 100 further includes a mounting seat 20A disposed within the second accommodating cavity 201 and defining a mounting cavity 21. The slider 10 is disposed within the mounting cavity 21. Components or structures such as the first mating portion 22, the second mating portion 23, and the third mating portion 24 are disposed within the mounting seat 20A.

[0244] It should be noted that the structure of the mounting seat 20A is roughly the same as that of the above-mentioned mounting assembly 20, and the matching mode of the mounting seat 20A and the slider 10 is the same as that of the above-mentioned mounting assembly 20 and the slider 10, which will not be repeated here.

[0245] It will be appreciated that the provision of the second accommodating cavity 201 in the housing 101 facilitates assembly of the mounting base 20A. The provision of the mounting cavity 21 facilitates assembly of the slider 10 and improves the stability of the fit between the slider 10 and the mounting base 20A. Furthermore, by separating the mounting base 20A from the housing 101, the mounting base 20A can be easily replaced in the event of failure or damage to components or structures within the mounting base 20A, thereby improving the maintenance efficiency and reducing maintenance costs of the indoor unit.

[0246] In some embodiments, as shown in FIG25 , an air conditioner 1000 includes an indoor unit 1. The indoor unit 1 includes a housing 101. One side (eg, the upper side) of the housing 101 is open to form an air inlet 102.

[0247] In some embodiments, the other side (eg, the front side or the bottom side) of the housing 101 is open to form an air outlet.

[0248] In some embodiments, the indoor unit further includes an indoor heat exchanger, which is disposed in the housing 101 and configured to perform heat exchange with the air entering the housing 101 from the air inlet 102 .

[0249] In some embodiments, the indoor unit also includes a fan assembly, which is arranged on the side of the indoor heat exchanger away from the air inlet 102 and is configured to rotate and drive the gas flow in the shell 101, so that air flows into the shell 101 from the air inlet 102, and the air after heat exchange with the indoor heat exchanger is discharged from the air outlet to the outside of the shell 101 (i.e., to the room).

[0250] It should be noted that the fan assembly can guide indoor air from the air inlet 102 to the indoor heat exchanger, increase the flow rate of air entering the indoor heat exchanger from the air inlet 102, and thus adjust the air volume entering the indoor heat exchanger.

[0251] In some embodiments, as shown in FIG26 , the indoor unit further includes at least one filter element 40 (filter screen). The filter element 40 is disposed between the air inlet 102 and the indoor heat exchanger and covers the air inlet 102. The filter element 40 is configured to filter air entering the housing 101 from the air inlet 102 to prevent foreign matter in the air from entering the indoor unit 1.

[0252] For example, when the indoor unit 1 is in operation, air entering the housing 101 through the air inlet 102 is first filtered by the filter element 40 before entering the indoor heat exchanger. This prevents debris in the indoor air from entering the indoor heat exchanger and preventing debris from accumulating on the indoor heat exchanger and causing blockage. This helps improve the heat exchange efficiency of the indoor heat exchanger.

[0253] 26 and 27 , the indoor unit further includes at least one self-cleaning device 50. The self-cleaning device 50 is detachably connected to the housing 101 and is configured to clean debris on the filter element 40, thereby improving the filtering efficiency of the filter element 40.

[0254] 26 and 27 , the self-cleaning device 50 includes a base 51 , which is connected to the housing 101 .

[0255] In some embodiments, the self-cleaning device 50 further includes a reel assembly 52. ​​The reel assembly 52 is rotatably connected to the base 51 and is connected to the filter element 40. The reel assembly 52 is configured to drive the filter element 40 to move so that the filter element 40 covers the air inlet 102 or is wound around the reel assembly 52.

[0256] 27 and 28 , the reel assembly 52 includes a first reel 521. The first reel 521 is connected to a first end of the filter element 40. When the first reel 521 rotates, the filter element 40 covers the air inlet 102 or is wound around the outer circumference of the reel.

[0257] In some embodiments, the reel assembly 52 further includes a second reel 522. The second reel 522 is connected to the second end of the filter element 40. As the filter element 40 is wound around the periphery of the first reel 521, the filter element 40 is released from the second reel 522. As the filter element 40 is wound around the periphery of the second reel 522, the filter element 40 is released from the first reel 521. For example, the projections of the first reel 521 and the second reel 522 on the plane of the bottom surface of the first accommodating portion 55 do not overlap. The first reel 521 and the second reel 522 are rotatably connected to the base 51.

[0258] In some embodiments, the self-cleaning device 50 further includes a cleaning assembly 54A (cleaning brush assembly). The first reel 521, the second reel 522, and the cleaning assembly 54A are pivotally connected to the base 51. The cleaning assembly 54A is configured to clean debris from the filter element 40 while the filter element 40 is being wound around or released from the first reel 521.

[0259] In some embodiments, a cleaning chamber 56 is defined in the base 51 , and at least a portion of the cleaning assembly 54A is disposed in the cleaning chamber 56 .

[0260] For example, at least a portion of one of the first reel 521 or the second reel 522 is located in the cleaning chamber 56 so that a portion of the filter element 40 is located in the cleaning chamber 56 , so that the cleaning chamber 56 can block dust or impurities raised on the portion of the filter element 40 .

[0261] In some embodiments, the top of the cleaning chamber 56 is open to form a first opening 563 . The first reel 521 is disposed at the first opening 563 .

[0262] In some embodiments, the bottom of the cleaning chamber 56 is open to form a second opening 564. As shown in Figures 26 and 28, the self-cleaning device 50 further includes a first receiving portion 55 (dust collection box). The first receiving portion 55 is located at the second opening 564 and is configured to collect debris dropped from the first cleaning member 542.

[0263] For example, the first receiving portion 55 is a box body with an open top. When the filter element 40 and the first cleaning element 542 come into contact, dust and impurities on the filter element 40 fall into the first receiving portion 55 due to gravity.

[0264] For example, the first receiving portion 55 is detachably connected to the base 51. In this way, when the amount of debris in the first receiving portion 55 reaches a certain level, it is convenient for the user to manually remove and clean the first receiving portion 55.

[0265] In some embodiments, as shown in FIG28 , the cleaning assembly 54A includes a third reel 543 (cleaning brush reel). The third reel 543 is pivotally connected to the base 51. For example, the third reel 543 is disposed below the second reel 522.

[0266] In some embodiments, the cleaning assembly 54A further includes a first cleaning member 542 disposed on the outer circumference of the third reel 543. When the third reel 543 rotates relative to the base 51, the third reel 543 drives the first cleaning member 542 to rotate to clean debris on the filter element 40.

[0267] For example, the first cleaning member 542 is disposed in the cleaning chamber 56. When the first reel 521 or the second reel 522 drives the filter element 40 to move, the first cleaning member 542 contacts the filter element 40 to clean the filter element 40. It is understood that since the first cleaning member 542 is located in the cleaning chamber 56, dust removed from the filter element 40 by the first cleaning member 542 will fall into the cleaning chamber 56, thereby preventing indoor air from being contaminated during the cleaning of the filter element 40.

[0268] In some embodiments, as shown in FIG29 , the indoor unit 1 further includes at least one motor 60A. The at least one motor 60A includes a second motor connected to the third reel 543 and configured to rotate the third reel 543, thereby rotating the first cleaning member 542 to clean dust from the filter element 40. For example, the second motor is a stepping motor.

[0269] In some embodiments, the at least one motor 60A includes a first motor connected to the second reel 522 to rotate the second reel 522. During the rotation of the second reel 522, a pulling force is applied to the first reel 521 through the filter element 40, thereby driving the first reel 521 to rotate and achieving movement of the filter element 40.

[0270] In some embodiments, as shown in Figures 28 and 30, the first cleaning member 542 includes a first sub-cleaning member 5421 (first cleaning member). The first sub-cleaning member 5421 is arranged on the outer peripheral side of the third reel 543. The first cleaning member 542 also includes a second sub-cleaning member 5422 (second cleaning member), which is arranged on the outer peripheral side of the third reel 543 and is spaced apart from the first sub-cleaning member 5421.

[0271] In some embodiments, the stiffness of the first sub-cleaning member 5421 is greater than or equal to the stiffness of the second sub-cleaning member 5422 .

[0272] It should be noted that stiffness refers to the ability of a material or structure to resist elastic deformation when subjected to force, and is a representation of the ease or difficulty of elastic deformation of a material or structure.

[0273] Because the rigidity of the first sub-cleaning member 5421 is greater than or equal to the rigidity of the second sub-cleaning member 5422, when the first sub-cleaning member 5421 and the second sub-cleaning member 5422 respectively contact the filter element 40, the first sub-cleaning member 5421 is less likely to bend due to the force, thereby increasing the friction between the first sub-cleaning member 5421 and the filter element 40. In this way, the first sub-cleaning member 5421 can remove impurities such as oil stains on the filter element 40 that are difficult to clean.

[0274] As the third reel 543 rotates, after the first sub-cleaning member 5421 disengages from the filter element 40, the second sub-cleaning member 5422 comes into contact with the filter element 40 to clean it. Because the rigidity of the second sub-cleaning member 5422 is less than or equal to that of the first sub-cleaning member 5421, when the second sub-cleaning member 5422 contacts the filter element 40, it can remove easily removable impurities, such as dust, from the surface of the filter element 40. Furthermore, the second sub-cleaning member 5422 has a low rigidity and easily bends under stress. Consequently, the friction between the filter element 40 and the second sub-cleaning member 5422 is low, thereby preventing the second sub-cleaning member 5422 from damaging the filter element 40 while cleaning it.

[0275] In some embodiments, along the radial direction of the third reel 543, the length of the first sub-cleaning member 5421 is less than or equal to the length of the second sub-cleaning member 5422. It is understood that, compared to oil, dust and other impurities that are easier to clean are more likely to accumulate on the filter element 40. Therefore, by setting the length of the first sub-cleaning member 5421 to be less than or equal to the length of the second sub-cleaning member 5422, the second sub-cleaning member 5422 can improve the cleaning effect of the dust and other impurities.

[0276] In some embodiments, as shown in FIG30 , the cleaning assembly 54A further includes a first retaining portion 544 (spring). The first retaining portion 544 is disposed within the third reel 543 and extends radially along the third reel 543. For example, a first end of the first retaining portion 544 is located within the third reel 543, and a second end of the first retaining portion 544 extends radially outward from the third reel and abuts against the first sub-cleaning member 5421 and the second sub-cleaning member 5422. For example, the first retaining portion 544 is elastic.

[0277] In this way, when the first sub-cleaning member 5421 or the second sub-cleaning member 5422 contacts the filter element 40, the first resisting portion 544 is in a compressed state, so that a force can be applied to the first sub-cleaning member 5421 and the second sub-cleaning member 5422 to make the first sub-cleaning member 5421 and / or the second sub-cleaning member 5422 abut against the filter element 40, thereby increasing the contact area between the first sub-cleaning member 5421 and the filter element 40, as well as the contact area between the second sub-cleaning member 5422 and the filter element 40, thereby improving the cleaning effect of the cleaning component on the filter element 40.

[0278] In some embodiments, the second motor drives the third reel 543 to rotate back and forth by a predetermined angle, thereby selectively bringing the first sub-cleaning member 5421 and the second sub-cleaning member 5422 into contact with the filter element 40 , thereby enabling targeted cleaning of the filter element 40 with different degrees of dirtiness.

[0279] For example, referring to FIG. 28 , when there is a lot of oil on the filter element 40 , the second motor can drive the third reel 543 to reciprocate by a first predetermined angle, so that the first sub-cleaning element 5421 cleans the oil on the filter element 40 .

[0280] For example, referring to FIG. 30 , when there is a lot of dust on the filter element 40 , the second motor can drive the third reel 543 to reciprocate by a second predetermined angle, so that the second sub-cleaning element 5422 cleans the dust on the filter element 40 .

[0281] For example, when there is a lot of oil and dust on the filter element 40, the second motor can drive the third scroll 543 to rotate back and forth by a third predetermined angle, so that the first sub-cleaning element 5421 and the second sub-cleaning element 5422 alternately clean the oil and dust on the filter element 40.

[0282] In some embodiments, the first cleaning member 542 includes a plurality of sub-cleaning members, for example, three sub-cleaning members, four sub-cleaning members, five sub-cleaning members, or more sub-cleaning members. The present disclosure does not limit the number of the first cleaning members.

[0283] It is understandable that the stiffness of the multiple sub-cleaning members is different. In this way, when the third reel 543 drives the multiple sub-cleaning members to rotate, the multiple sub-cleaning members with different stiffness alternately contact the filter element 40, thereby improving the cleaning effect of the filter element 40.

[0284] It should be noted that, among the multiple sub-cleaning elements, the greater the rigidity of any sub-cleaning element, the shorter the length thereof, thereby avoiding damage to the filter element 40 .

[0285] In some embodiments, as shown in FIG31 , the self-cleaning device 50 further includes at least one driven member 61A (driven gear). The driven member 61A is connected to an axial end of a reel (e.g., the first reel 521 or the second reel 522) and is coaxially disposed with the reel. Thus, the driven member 61A can rotate synchronously with the reel.

[0286] In some embodiments, as shown in FIG32 , the self-cleaning device 50 further includes at least one mounting member 70A (mounting plate), the at least one mounting member 70A corresponding to the at least one follower 61A. The mounting member 70A is connected to the base 51 and is located on a side of the corresponding follower 61A away from the reel. The mounting member 70A is configured to cover at least a portion of the corresponding follower 61A, thereby improving the appearance of the self-cleaning device 50. For example, the mounting member 70A is configured to cover the portion of the corresponding follower 61A exposed from the base 51.

[0287] In some embodiments, the at least one follower 61A includes two followers 61A. The two followers 61A are disposed at both ends of the reel in the axial direction and are exposed from the base 51. In this case, the at least one mounting member 70A includes two mounting members 70A. The two mounting members 70A are respectively disposed on the sides of the two followers 61A facing away from each other, thereby covering the two followers 61A.

[0288] In some embodiments, as shown in FIG32 , the mounting member 70A includes a mounting member body 74. The mounting member 70A also includes a first clamping portion 71A. The first clamping portion 71A is connected to the follower 61A and is located on a side of the mounting member body 74 away from the follower 61A. The first clamping portion 71A protrudes in a direction away from the follower 61A.

[0289] In this way, when a force is applied to the first clamping portion 71A to rotate the first clamping portion 71A, the first clamping portion 71A drives the driven member 61A to rotate, thereby driving the reel and the filter element 40 to rotate.

[0290] In some embodiments, as shown in Figure 32, the mounting member 70A includes a second clamping portion 72A. The second clamping portion 72A is connected to the follower 61A and is located on a side of the mounting member body 74 away from the follower 61A. The surface of the second clamping portion 72A away from the follower 61A is recessed toward the follower 61A.

[0291] In this way, when a force is applied to the second clamping portion 72A to rotate the second clamping portion 72A, the second clamping portion 72A drives the follower 61A to rotate, thereby driving the reel and the filter element 40 to rotate.

[0292] It is understood that when a user manually cleans the filter element, they need to control the rotation of the follower 61A to loosen and unfold the filter element 40, and then remove the filter element 40 from the indoor unit. Therefore, by providing a corresponding mounting member on the follower 61A, the user only needs to rotate the first clamping portion 71A or the second clamping portion 72A of the mounting member 70A to rotate the follower 61A and the reel, loosening and unfolding the filter element 40, thereby facilitating the user's manual removal of the filter element 40.

[0293] In some embodiments, the first clamping portion 71A is disposed within the second clamping portion 72A and protrudes relative to the second clamping portion 72A in a direction away from the follower 61A, thereby facilitating a user's grip on the first clamping portion 71A. For example, a user can insert their fingers into the second clamping portion 72A and grip the first clamping portion 71A from opposite sides.

[0294] In some embodiments, as shown in FIG33 , the mounting member 70A includes a third clamping portion 73A (a protruding knob). The third clamping portion 73A is connected to the follower 61A. The third clamping portion 73A is coaxially disposed with the follower 61A and is configured to rotate in response to an external force, thereby driving the follower 61A to rotate.

[0295] For example, the third clamping portion 73A includes a circular chassis. For example, the third clamping portion 73A also includes a second protrusion, and the second protrusion is strip-shaped or square-shaped. For example, the third clamping portion 73A also includes a third protrusion, which is arranged on a side of the chassis 731 away from the follower 61A and extends along the circumference of the chassis, thereby increasing the strength of the outer peripheral edge of the third clamping portion 73A. Moreover, when the user rotates the third clamping portion, the third protrusion can stop the finger, thereby increasing the friction between the user's finger and the third clamping portion, making it easier for the user to rotate the third clamping portion 73A.

[0296] 31 , the at least one follower 61A includes a first follower 611 . The first follower 611 is connected to the first spool 521 .

[0297] In some embodiments, at least one follower 61A further includes a second follower 612. The second follower 612 is connected to the second reel 522. The second follower 612 is also connected to the first clamping portion 71A of the corresponding mounting member 70A.

[0298] It is understood that during the operation of the self-cleaning device 50, the second reel 522 drives the first reel 521 to rotate. Therefore, by connecting the first clamping portion 71A and the second follower 612, when the user rotates the first clamping portion 71A, the second follower 612 and the second reel 522 are driven to rotate, thereby causing the second reel 522 to drive the first reel 521 to rotate, and the filter element 40 moves between the first reel 521 and the second reel 522. In this way, when the user rotates the first clamping portion 71A, the first reel 521 and the second reel 522 rotate in the same manner as during the operation of the self-cleaning device 50, thereby reducing the probability of damage to the self-cleaning device 50 and thereby extending the service life of the self-cleaning device 50.

[0299] In some embodiments, the mounting member 70A further includes a mounting hole, the size of the mounting hole matches the size of the first clamping portion 71A. The first clamping portion 71A is disposed in the mounting hole.

[0300] In some embodiments, the third clamping portion 73A includes an output shaft that is fixedly connected to the second follower 612 and coaxially disposed with the second follower 612 so that the second follower 612 can be driven to rotate when the third clamping portion 73A rotates.

[0301] Below, for the convenience of description, as shown in Figure 25, the width direction of the indoor unit 1 (i.e., the front-to-back direction) is defined as the first direction A, the length direction of the indoor unit 1 (i.e., the left-to-right direction) is defined as the second direction B, and the height direction of the indoor unit 1 (i.e., the up-down direction) is defined as the third direction C.

[0302] In some embodiments, as shown in FIG. 34 , the at least one filter element 40 includes two filter elements 40 , and the two filter elements 40 are arranged side by side along the second direction B.

[0303] 34 and 35 , the at least one self-cleaning device 50 includes two self-cleaning devices 50, which are arranged side by side along the second direction B and correspond to the two filter elements 40. The second reels 522 in the two self-cleaning devices 50 are arranged side by side, for example, the two second reels 522 are coaxially arranged along the second direction B.

[0304] 35 , the at least one follower 61A includes a second follower 612A and a second follower 612B. The second follower 612A and the second follower 612B are disposed at adjacent ends of the two second reels 522. The second follower 612A and the second follower 612B are coaxially disposed opposite each other.

[0305] In some embodiments, as shown in FIG35 , the indoor unit 1 further includes at least one first transmission assembly 80 (transmission assembly). The first transmission assembly 80 is in transmission connection with the second follower 612A and the second follower 612B. When the motor 60A directly or indirectly drives the second follower 612A to rotate, the second follower 612A drives the first transmission assembly 80 to rotate, and then the first transmission assembly 80 drives the second follower 612B to rotate.

[0306] In this way, by providing a motor in the indoor unit 1, the synchronous rotation of the two second driven members 612 can be achieved, thereby reducing the manufacturing cost of the indoor unit 1 and reducing the length of the indoor unit 1 in the second reverse direction B.

[0307] In some embodiments, as shown in Figures 34 and 35, the first transmission assembly 80 includes a first transmission member 81 (a first transmission gear). The first transmission member 81 is in transmission connection with the second driven member 612A. For example, the first transmission member 81 and the second driven member 612A are gears, and the first transmission member 81 and the second driven member 612A are meshed.

[0308] In some embodiments, the first transmission assembly 80 further includes a second transmission member 82 (a second transmission gear). The second transmission member 82 is in transmission connection with the second driven member 612B. For example, the second transmission member 82 and the second driven member 612B are gears, and the second transmission member 82 and the second driven member 612B are meshed.

[0309] In some embodiments, the first transmission member 81 includes a first transmission gear that meshes with a second driven member provided at the end of any one of the second reels. The second transmission member 82 includes a second transmission gear that meshes with a second driven member provided at the end of the other second reel.

[0310] In some embodiments, the first transmission assembly 80 further includes a connecting member 83. The first transmission member 81 and the second transmission member 82 are disposed at opposite ends of the connecting member 83 and are coaxially disposed with the connecting member 83.

[0311] For example, the connecting member 83 may be cylindrical, prismatic, or other shapes. The connecting member 83 is detachably connected to the first transmission member 81, and the connecting member 83 is detachably connected to the second transmission member 82, so that the first transmission member 81 or the second transmission member 82 can be replaced when damaged.

[0312] Thus, when the motor 60A is operating, it drives the first second reel 522 to rotate, which in turn drives the second follower 612A disposed at its end to rotate, which in turn drives the first transmission member 81 to rotate. Subsequently, the first transmission member 81 rotates, driving the connecting member 83 and the second transmission member 82 to rotate, thereby causing the second follower 612B to drive the second second reel 522 to rotate.

[0313] In some embodiments, the motor 60A includes an output shaft. The motor 60A also includes a driving member (e.g., a drive gear). The driving member is connected to the output shaft, so that when the output shaft rotates, the driving member can be driven to rotate. The at least one second driven member 612 also includes a second driven member 612C, and the second driven member 612C and the second driven member 612A are respectively disposed at opposite ends of a second reel 522. The second driven member 612C is in transmission connection with the driving member, so that the motor 60A can drive the second reel 522 to rotate through the driving member and the second driven member 612C.

[0314] In some embodiments, the at least one self-cleaning device 50 includes at least two self-cleaning devices 50. The number of the at least one first transmission assembly 80 is less than the number of the at least two self-cleaning devices 50. Thus, the second driven members 612 in two adjacent self-cleaning devices 50 are connected by the first transmission assembly 80, thereby enabling one (or more) motors 60A to drive the second reels 522 in multiple self-cleaning devices 50 to rotate. This can further reduce the manufacturing cost of the indoor unit 1 and reduce the length of the indoor unit 1 in the second direction B.

[0315] It is understandable that when the ratio of the pitch circle diameter of the second follower 612 to the pitch circle diameter of the first transmission member 81 is too large (such as greater than 3), the size of the second follower 612 will be too large, and the cost will increase.

[0316] If the ratio of the pitch circle diameter of the second follower 612 to the pitch circle diameter of the first transmission member 81 is too small (eg, less than 1), the stability of the second follower 612 during the transmission process will be reduced.

[0317] In some embodiments, the pitch circle diameter of the second follower 612 is d, and the pitch circle diameter of the first transmission member 81 is d1. The ratio of d to d1 is any value between 1 and 3. For example, the ratio of d to d1 is 1, 1.1, 1.2, 1.5, 2, 2.5, or 3. This is beneficial to reducing costs and improving the stability of the second follower 612 and the first transmission member 81 during the transmission process. For example, the ratio of d to d1 is any value between 1 and 1.1. For example, the ratio of d to d1 is any value between 1.1 and 1.2. For example, the ratio of d to d1 is any value between 1.2 and 1.5. For example, the ratio of d to d1 is any value between 1.5 and 2. For example, the ratio of d to d1 is any value between 2 and 2.5. For example, the ratio of d to d1 is any value between 2.5 and 3.

[0318] In some embodiments, the pitch circle diameter d2 of the second transmission member 82 is equal to the pitch circle diameter d1 of the first transmission member 81, which is beneficial to improving the stress-bearing capacity of the second transmission member 82 and improving the stability of the second follower 612 and the second transmission member 82 during the transmission process.

[0319] In some embodiments, the ratio of d to d1 is equal to the ratio of d to d2, thereby balancing the forces between the first transmission member 81, the second transmission member 82 and the two second follower members 612, which is beneficial to reducing the wear between the first transmission member 81, the second transmission member 82 and the two second follower members 612, and extending the service life of the first transmission member 81, the second transmission member 82 and the two second follower members 612.

[0320] In some embodiments, as shown in FIG36 , the connecting member 83 includes a fourth mating portion 831 located at an end of the connecting member 83 proximal to the first transmission member 81. The first transmission member 81 includes a fifth mating portion 811. The fourth mating portion 831 mates with the fifth mating portion 811 to limit the first transmission member 81 in the circumferential direction of the connecting member 83.

[0321] For example, the fourth matching portion 831 is a limiting post, and the fifth matching portion 811 is a limiting hole. The limiting post is disposed in the limiting hole to prevent the first transmission member 81 from rotating relative to the connecting member 83.

[0322] In some embodiments, the connecting member 83 includes a sixth mating portion 832, which is located at an end of the connecting member 83 adjacent to the second transmission member 82. The second transmission member 82 includes a seventh mating portion 821. The sixth mating portion 832 mates with the seventh mating portion 821 to limit the second transmission member 82 in the circumferential direction of the connecting member 83.

[0323] For example, the sixth matching portion 832 is a limiting post, and the seventh matching portion 821 is a limiting hole. The limiting post is disposed in the limiting hole to prevent the second transmission member 82 from rotating relative to the connecting member 83.

[0324] In some embodiments, the indoor unit 1 further includes a second housing (first box). The second housing is connected to the base 51 or the housing 101. The first transmission member 81, the second transmission member 82, and the connecting member 83 are disposed within the second housing to prevent impurities on the filter element 40 or in the air from falling into the first transmission assembly 80 and causing damage to the first transmission assembly 80.

[0325] It can be understood that the second reels 522 (i.e., the second reel 522A and the second reel 522B) in the two adjacent self-cleaning devices shown in Figure 35 are transmission connected. In this case, if the filter elements 40 wound on the second reel 522A and the second reel 522B are in different winding positions, the two filter elements 40 cannot cover the air inlet 102 at the same time, or cannot move to the cleaning position, resulting in failure of self-cleaning.

[0326] In some embodiments, as shown in Figures 37 and 38, the first transmission assembly 80 further includes a clutch 84. The clutch 84 is disposed axially between the connecting member 83 and the second transmission member 82, and is coaxially disposed with the connecting member 83 and the second transmission member 82. The clutch 84 is configured to switch to a first state (an open state) to connect the connecting member 83 to the second transmission member 82, or to switch to a second state (a disconnected state) to disconnect the connecting member 83 from the second transmission member 82, thereby connecting or disconnecting the second reel 522A and the second reel 522B.

[0327] For example, the clutch 84 is fixedly connected to the second transmission member 82 , and the connecting member 83 abuts against the clutch 84 .

[0328] In this way, the connecting member 83 can apply an axial force to the clutch 84. When the force is greater than a preset threshold, the friction between the connecting member 83 and the clutch 84 increases, and the clutch 84 enters the first state and connects with the connecting member 83, so that the connecting member 83 and the first transmission member 81 rotate under the drive of the second transmission member 82 and the clutch 84, thereby achieving transmission connection between the second reel 522A and the second reel 522B.

[0329] When the force applied by the connecting member 83 to the clutch 84 is less than a preset threshold, the friction between the connecting member 83 and the clutch 84 decreases, and the clutch 84 enters the second state, disconnecting from the connecting member 83. In this state, the rotation of the second transmission member 82 and the clutch 84 does not drive the rotation of the first transmission member 81. Thus, the connection between the second reel 522A and the second reel 522B can be disconnected, allowing the second reel 522A and the second reel 522B to rotate independently.

[0330] It is understood that when the filter elements 40 wound on the second reel 522A and the second reel 522B are in different winding positions, the clutch 84 can be controlled to enter the second state, allowing the second reel 522A and the second reel 522B to rotate independently, thereby adjusting the two filter elements 40 to the same winding position. In this way, the two filter elements 40 can simultaneously cover the air inlet 102 or move to the cleaning position, which helps to improve the reliability of self-cleaning.

[0331] In some embodiments, the clutch 84 is an electromagnetic clutch, so that at least one motor 60A can be omitted, which is beneficial to reducing the manufacturing cost of the indoor unit 1.

[0332] In some embodiments, as shown in FIG. 38 , at least a portion of the clutch 84 is disposed between the second reel 522A and the second reel 522B, thereby improving the utilization efficiency of the internal space of the housing 101 .

[0333] In some embodiments, the indoor unit 1 further includes a controller configured to control the second motor to operate so that the second motor drives the first cleaning element 542 to rotate and clean the filter element 40 .

[0334] In some embodiments, as shown in FIG. 38 , the second follower 612 is in transmission connection (eg, meshed) with the driving member of the first motor, and the first follower 611 is in transmission connection (eg, meshed) with the second follower 612 .

[0335] In this way, during the operation of the self-cleaning device 50, the first motor runs, driving the active member to rotate, thereby driving the second follower member 612 to rotate, and then driving the second reel 522 to rotate. In this case, the second follower member 612 also drives the first follower member 611 engaged with it to rotate, thereby driving the first reel 521 to rotate.

[0336] Thus, under the action of the first reel 521 and the second reel 522 , the filter element 40 tensioned between the first reel 521 and the second reel 522 can move along a predetermined trajectory, so that the self-cleaning device 50 can clean different areas of the filter element 40 .

[0337] In some embodiments, the second follower 612 has the same number of teeth as the first follower 611 , so that the first reel 521 and the second reel 522 rotate at the same speed, which helps to improve the stability of the movement of the filter element 40 .

[0338] In some embodiments, the indoor unit 1 further includes a sensor. The sensor is coupled to the controller and configured to detect the amount of foreign matter on the filter element 40.

[0339] For example, when the amount of impurities on the filter element 40 is lower than a first preset amount, the sensor may transmit a first signal to the controller, and the controller controls the indoor unit 1 to stop the self-cleaning mode in response to the first signal.

[0340] For example, when the amount of impurities on the filter element 40 is higher than a second preset amount, the sensor may transmit a second signal to the controller, and the controller controls the indoor unit 1 to start the self-cleaning mode in response to the second signal.

[0341] For example, the second preset amount is greater than or equal to the first preset amount.

[0342] 39 , the cleaning assembly 54A further includes at least one fourth limiting portion 541 . The fourth limiting portion 541 is disposed on the outer periphery of the third reel 543 and extends radially outward from the third reel 543 .

[0343] In some embodiments, the base 51 further includes a first stopper 5111. The first stopper 5111 is disposed on the inner wall of the cleaning chamber 56. The fourth stopper 541 can abut against the first stopper 5111 to limit the circumferential position of the third reel 543, thereby enabling the cleaning assembly 54A to reciprocate between the fifth and sixth positions. For example, the first stopper 5111 can serve as a stopper.

[0344] For example, referring to FIG. 39 , when the cleaning assembly 54A moves from the fifth position to the sixth position, the fourth limiting portion 541 abuts against one side of the first stop portion 5111 to limit the rotation position of the third reel 543 , thereby limiting the motor 60A.

[0345] Referring to Figure 40, when the cleaning component 54A rotates from the sixth position to the fifth position, the fourth limiting portion 541 abuts against the other side of the first stop portion 5111 to limit the rotation position of the third reel 543. In this way, the output shaft of the motor 60A will not be affected by the rotational inertia, which is beneficial to extending the service life of the motor 60A.

[0346] Moreover, when the third reel 543 rotates to the fifth position, the first cleaning member 542 is located on the side of the third reel 543 adjacent to the second reel 522 and abuts against the filter element 40 wound around the outer periphery of the second reel 522, thereby cleaning impurities such as dust and cotton wool on the filter element 40.

[0347] It can be understood that the cooperation and stopping of the first stop portion 5111 and the fourth limiting portion 541 facilitates the limiting of the third scroll 543 and the first cleaning member 542, so that the first cleaning member 542 can stop against the filter element 40 on the outer peripheral side of the second scroll 522, which is beneficial to improving the efficiency and reliability of the first cleaning member 542 in cleaning the filter element 40.

[0348] In some embodiments, as shown in Figures 39 and 40, at least one fourth limiting portion 541 includes a first sub-limiting portion 5411 and a second sub-limiting portion 5412. The first sub-limiting portion 5411 and the second sub-limiting portion 5412 are spaced apart along the circumference of the third reel 543. When the cleaning assembly 54A is in the sixth position, the first sub-limiting portion 5411 abuts against the first stop portion 5111; when the fourth limiting portion 541 is in the fifth position, the second sub-limiting portion 5412 abuts against the first stop portion 5111.

[0349] For example, the third reel 543 rotates clockwise to drive the fourth limiting portion 541 to move to the sixth position. In this case, the first sub-limiting portion 5411 abuts against the first stop portion 5111, restricting the third reel 543 from continuing to rotate clockwise. The first cleaning member 542 does not contact the filter element 40. The first sub-limiting portion 5411 is located below the second sub-limiting portion 5412, and the first cleaning member 542 is located below the central axis of the third reel 543.

[0350] For example, the third reel 543 rotates counterclockwise to drive the fourth limiting portion 541 to the fifth position. In this case, the second sub-limiting portion 5412 abuts against the first stop portion 5111, restricting the third reel 543 from continuing to rotate counterclockwise. The first cleaning member 542 abuts against the filter element 40, and the filter element 40, driven by the second reel 522, generates relative motion with the first cleaning member 542, allowing the first cleaning member 542 to clean the filter element 40.

[0351] It can be understood that the first sub-limiting portion 5411 and the second sub-limiting portion 5412 stop against the first stop portion 5111 at the sixth position and the fifth position respectively, thereby avoiding the first cleaning member 542 from being misaligned with the filter member 40 due to the action of inertia, thereby reducing the cleaning effect of the first cleaning member 542.

[0352] In some embodiments, the angle between the first sub-limiting portion 5411 and the second sub-limiting portion 5412 is α, and 0°≤α≤180°. In this way, the first sub-limiting portion 5411 and the second sub-limiting portion 5412 can respectively abut against the first stop portion 5111 at the sixth position and the fifth position, thereby improving the cleaning efficiency of the first cleaning member 542 on the filter element 40.

[0353] For example, the angle α may be any value between 0° and 60°. For example, the angle α may be any value between 60° and 120°. For example, the angle α may be any value between 120° and 180°.

[0354] For example, the angle α may be 0°, 30°, 60°, 90°, 120° or 180°.

[0355] It is understood that when the angle α increases (e.g., α is 90°, 120°, or 180°), the angle of rotation of the cleaning assembly 54A between the fifth and sixth positions can be reduced, thereby facilitating improved stability of the rotation of the third reel. When the angle α decreases (e.g., α is 0°, 30°, or 60°), the angle of rotation of the cleaning assembly 54A between the fifth and sixth positions can be increased, thereby facilitating contact or separation between the first cleaning member 542 and the filter member 40, thereby facilitating improved reliability of the cleaning assembly 54A.

[0356] In some embodiments, as shown in Figures 41 and 42 , the first stop portion 5111 includes a first sub-stop portion 5112 (a first stop surface). When the fourth stop portion 541 is in the sixth position, the first sub-stop portion 5411 abuts against the first sub-stop portion 5112. For example, the first stop portion 5111 is detachably connected to the front wall of the cleaning chamber 56. For example, the first stop portion 5111 is a hollow structural member.

[0357] In some embodiments, the first stop portion 5111 further includes a second sub-stop portion 5113 (a second stop surface). When the fourth limiting portion 541 is in the fifth position, the second sub-stop portion 5412 abuts against the second sub-stop portion 5113. The first sub-stop portion 5112 and the second sub-stop portion 5113 are arranged along the third direction C. For example, the first sub-stop portion 5112 is located below the second sub-stop portion 5113. When the third reel 543 rotates clockwise, the first sub-stop portion 5411 rotates to the first sub-stop portion 5112, abutting against the first sub-stop portion 5112.

[0358] It can be understood that the setting of the first sub-stop portion 5112 and the second sub-stop portion 5113 facilitates the stopping of the first sub-limit portion 5411 and the second sub-limit portion 5412 with the first stop portion 5111, which is beneficial to improving the stability and reliability of the stopping between the fourth limit portion 541 and the first stop portion 5111, and reducing the rotation error of the third scroll 543.

[0359] In some embodiments, when the indoor unit 1 turns on the self-cleaning mode, the first cleaning element 542 rotates to the fifth position to stop at the filter element 40, and the second scroll 522 drives the filter element 40 to move so that the first cleaning element 542 can remove debris on the filter element 40.

[0360] When the indoor unit 1 exits the self-cleaning mode and turns on, the first cleaning member 542 rotates to the sixth position to disengage from the filter element 40 , and the first cleaning member 542 is located on the side of the third reel 543 away from the second reel 522 .

[0361] In some embodiments, as shown in FIG43 , the base 51 further includes a second cleaning member 512 (cleaning member). The second cleaning member 512 is disposed on the sidewall of the cleaning chamber 56 opposite the first stopper 5111. The second cleaning member 512 is configured to clean debris from the first cleaning member 542 while the fourth stopper 541 moves between the sixth and fifth positions. This helps improve the cleanliness of the first cleaning member 542, thereby enhancing the cleaning effectiveness of the cleaning assembly 54A on the filter element 40.

[0362] For example, along the first direction A, the first stopper 5111 is disposed on the front wall of the cleaning chamber 56, and the second cleaning member 512 is disposed on the rear wall of the cleaning chamber 56. Along the third direction C, when the cleaning assembly 54A is in the fifth position, the first cleaning member 542 is located above the second cleaning member 512, and when the cleaning assembly 54A is in the sixth position, the first cleaning member 542 is located below the second cleaning member 512.

[0363] In some embodiments, the first cleaning member 542 is detachably connected to the third reel 543, and the second cleaning member 512 is detachably connected to the base 51. Here, the first cleaning member 542 is detachably connected to the third reel 543, and the first cleaning member 542 is also detachably connected to the base 51. This facilitates replacement of the first cleaning member 542 or the second cleaning member 512 when damaged.

[0364] In some embodiments, the first cleaning member 542 extends axially along the third reel 543 and is disposed on the outer periphery of the third reel 543. The fourth stopper 541 is disposed at an axial end of the third reel 543. Thus, after the fourth stopper 541 is assembled with the third reel 543, the first cleaning member 542 can rotate along the third reel 543, and the fourth stopper 541 can detach from the third reel 543 axially. The second cleaning member 512 is disposed on the sidewall of the cleaning chamber 56 axially along the third reel 543. This simplifies the assembly process of the indoor unit 1 and improves assembly efficiency.

[0365] In some embodiments, the cross-sectional shape of the first stop portion 5111 is a right-angled trapezoid, a curved trapezoid, a polygon or a semicircle, thereby increasing the contact area between the fourth limiting portion 541 and the first stop portion 5111 and improving the stability of the stopping between the fourth limiting portion 541 and the first stop portion 5111.

[0366] In some embodiments, the at least one fourth limiting portion 541 includes two fourth limiting portions 541, which are respectively provided at the ends of the third reel 543 along the axial direction of the third reel 543. The orthographic projections of the two fourth limiting portions 541 on any plane perpendicular to the axial direction of the third reel 543 coincide.

[0367] In some embodiments, the at least one first stop portion 5111 includes two first stop portions 5111 . Along the axial direction of the third reel 543 , the two first stop portions 5111 correspond to positions of the two fourth limiting portions 541 .

[0368] It can be understood that the two fourth limiting portions 541 are provided at the ends of the third reel 543 , which facilitates the installation and removal of the fourth limiting portions 541 and helps to improve the stability of limiting the third reel 543 .

[0369] Some embodiments of the present disclosure provide another indoor unit 1, as shown in Figure 44, the indoor unit 1 includes a shell 101, an indoor heat exchanger 105, a fan assembly 30, at least one filter element 40, at least one self-cleaning device 50, at least one drive assembly 60 and at least one second transmission assembly 70.

[0370] As shown in Figures 45 to 47, the housing 101 includes a front plate 12A, a back plate 13A, a first side plate 14A, and a second side plate 15A. The first side plate 14A and the second side plate 15A are connected to the front plate 12A and the back plate 13A, respectively, and extend in directions perpendicular to the front plate 12A and the back plate 13A, respectively.

[0371] The housing 101 includes at least one air inlet 102 and an air outlet. A portion of the top of the housing 101 is open to form the air inlet 102.

[0372] A portion of the bottom of the housing 101 is open to form the air outlet. The indoor heat exchanger 105 is disposed within the housing 101 and is configured to exchange heat with the indoor air entering through the air inlet 102. The fan assembly 30 is disposed on a side of the indoor heat exchanger 105 away from the air inlet 102 and is configured to draw in and pump out the indoor air.

[0373] The filter element 40 is disposed between the air inlet 102 and the indoor heat exchanger 105 and covers the air inlet 102. The filter element 40 is configured to filter the air entering the indoor unit 1 from the air inlet 102 to prevent foreign matter in the air from entering the indoor unit 1.

[0374] The self-cleaning device 50 is disposed within the housing 101 and is configured to clean debris attached to the filter element 40. A drive assembly 60 is disposed on the housing 101, and a second transmission assembly 70 is disposed within the housing 101. The drive assembly 60 is configured to rotate the second transmission assembly 70. The second transmission assembly 70 is connected to the self-cleaning device 50 and the drive assembly 60, and is configured to drive the self-cleaning device 50 to move under the drive of the drive assembly 60, so that the self-cleaning device 50 cleans debris attached to the filter element 40, thereby maintaining the cooling or heating efficiency of the indoor unit 1.

[0375] In some embodiments, as shown in Figure 49, the self-cleaning device 50 includes a base 51, a second reel 522, a first reel 521, a cleaning assembly 54A and a first accommodating portion 55. The base 51 is arranged in the housing 101 and is close to the front plate 12A. The base 51 includes a base body 511A and a bracket 512A. One side of the bracket 512A is connected to a side of the base body 511A close to the back plate 13A and extends along the thickness direction of the housing 101 (i.e., the front and rear direction as shown in Figure 45). The bracket 512A is configured to carry the filter element 40. The filter element 40 is arranged on the bracket 512A and can move along a predetermined trajectory on the bracket 512A.

[0376] The second reel 522, the first reel 521, and the cleaning assembly 54A are rotatably connected to the base body 511A, and the second reel 522, the first reel 521, and the cleaning assembly 54A each extend along the length of the housing 101. The second reel 522 is spaced apart from and substantially parallel to the first reel 521. The filter element 40 is tensioned between the second reel 522 and the first reel 521. The cleaning assembly 54A is positioned adjacent to the first reel 521 and is configured to clean debris from the filter element 40 as it is wound or unwound by the first reel 521 or the second reel 522.

[0377] The self-cleaning device 50 also includes a cleaning chamber 56. The base body 511A defines the cleaning chamber 56. The cleaning chamber 56 includes a first opening 563 and a second opening 564. The top of the cleaning chamber 56 is open to form the first opening 563, and the bottom of the cleaning chamber 56 is open to form the second opening 564. The second reel 522 is located above the first opening 563, the first reel 521 is located at the first opening 563, and the cleaning assembly 54A is located in the cleaning chamber 56. The first accommodating portion 55 is arranged below the second opening 564 and is configured to accommodate debris cleaned from the filter element 40 by the cleaning brush assembly 54.

[0378] In some embodiments, the second reel 522 rotates in opposite directions to the first reel 521. During the cleaning process of the self-cleaning device 50, the filter element 40 is wound on the first reel 521 and unwound on the second reel 522, or the filter element 40 is unwound on the first reel 521 and wound on the second reel 522.

[0379] In some embodiments, as shown in Figures 47 and 50, the cleaning assembly 54A includes a cleaning brush base 541A, a first cleaning member 542, and at least one first stop 544. The first cleaning member 542 is movably disposed on the cleaning brush base 541A and abuts against a portion of the filter element 40. The cleaning brush base 541A includes a first mounting portion 5411A and a second mounting portion 5412A. The first mounting portion 5411A is disposed on the second mounting portion 5412A and connected to the second mounting portion 5412A. One end of any one of the at least one first stop 544 abuts against the first mounting portion 5411A, and the other end abuts against the second mounting portion 5412A.

[0380] For example, the first resisting portion 544 is a spring. The first cleaning member 542 is disposed on a side of the first mounting portion 5411A away from the second mounting portion 5412A. When the first cleaning member 542 abuts the first reel 521, the first reel 521 applies a force to the first cleaning member 542, i.e., to the first mounting portion 5411A, causing the first mounting portion 5411A to compress the first resisting portion 544.

[0381] Because the second mounting portion 5412A is stationary along the height direction of the housing 101 (i.e., the vertical direction as shown in FIG45 ), the first stop portion 544 applies an elastic force of equal magnitude and opposite direction to the first mounting portion 5411A, causing the first cleaning member 542 to apply force to the first reel 521, thereby elastically abutting the first cleaning member 542 against the first reel 521. The cleaning brush base 541A, through the first stop portion 544, abuts the first cleaning member 542 against the first reel 521. This facilitates abutment between the first reel 521 and the first cleaning member 542 during rotation of the first reel 521 or the cleaning brush base 541A, thereby improving the cleaning ability of the first cleaning member 542 on the filter element 40 wound on the first reel 521. Furthermore, this prevents excessive wear of the first cleaning member 542 due to hard contact between the first reel 521 and the first cleaning member 542, thereby extending the service life of the first cleaning member 542.

[0382] It is understood that the first cleaning member 542 abuts the first reel 521 via the first stop 544. When the second reel 522 and the first reel 521 rotate in opposite directions, the first cleaning member 542 can abut the first reel 521 and clean the filter element 40 that has moved to the abutment position, causing debris brushed off the filter element 40 to fall into the first receiving portion 55, thereby collecting the debris. Since the first reel 521 may generate vibration or radial runout during rotation, the elasticity of the first stop 544 helps to improve the stability of the abutment between the first cleaning member 542 and the first reel 521, avoiding hard contact between the first reel 521 and the first cleaning member 542.

[0383] In some embodiments, as shown in Figures 51 and 52, the cleaning assembly 54A further includes at least one first stopper (stopper) 565. The at least one first stopper 565 is disposed on the inner wall of the cleaning chamber 56. The first stopper 565 is configured to abut against the first cleaning member 542 when the first stopper 544 shows a tendency to be compressed or stretched during the rotation of the cleaning brush base 541A, so that the first stopper 544 slowly undergoes elastic deformation.

[0384] When the first cleaning member 542 is separated from the second reel 522, the first cleaning member 542 rotates in the direction away from the cleaning brush base 541A. As the cleaning brush base 541A rotates, the first cleaning member 542 close to the filter element 40 stops at the first limit member 565. The first limit member 565 is configured to limit the distance that the first cleaning member 542 moves relative to the cleaning brush base 541A to avoid abnormal noise caused by sudden movement of the first cleaning member 542 when the first cleaning member 542 is separated from the filter element 40.

[0385] By setting the first limit member 565, it is beneficial to prolong the movement process of the first resisting portion 544 from the compressed state to the extended state when the first cleaning member 542 is separated from the filter member 40, delay the deformation process of the first resisting portion 544 from the compressed state to the extended state, avoid the first resisting portion 544 from moving rapidly and violently, resulting in a decrease in the stability of the first resisting portion 544 installed between the first cleaning member 542 and the cleaning brush base 541A, increase the reliability of the first resisting portion 544 installed between the first cleaning member 542 and the cleaning brush base 541A, avoid irreversible deformation of the first resisting portion 544, protect the first resisting portion 544, extend the service life of the first resisting portion 544, improve the structural stability of the cleaning component 54A, and avoid abnormal noise during the use of the self-cleaning device 50.

[0386] In some embodiments, as shown in Figures 49, 51, and 52, the self-cleaning device 50 further includes a cleaning member 59. The cleaning member 59 is disposed on the inner wall of the base 51 and on a side of the base front cover 513 that is adjacent to the cleaning chamber 56. For example, the cleaning member 59 and the base front cover 513 may be connected via an adhesive or a snap-fit ​​structure. A first stopper 565 is located on at least one side of the cleaning member 59 that is adjacent to or distal from the filter element 40.

[0387] The first stopper 565 is located on at least one side of the cleaning member 59 along the circumference of the center of the cleaning brush base 541A. The central axis of the cleaning brush base 541A serves as the rotation axis of the cleaning member 59. The first stopper 565 can be positioned between the cleaning member 59 and the second reel 522. When the first cleaning member 542 separates from the filter element 40, the first cleaning member 542 first abuts against the first stopper 565 and then against the cleaning member 59, and then rotates to the side of the cleaning member 59 away from the second reel 522 along the height direction of the housing 101.

[0388] By arranging a cleaning member 59 on the side wall of the cleaning chamber, the self-cleaning function of the cleaning component 54A is facilitated. When the first cleaning member 542 needs to be cleaned, the self-cleaning device 50 can be avoided from being disassembled, thereby reducing the difficulty of cleaning the first cleaning member 542 and improving the cleaning efficiency of the first cleaning member 542.

[0389] The first limiting member 565 is arranged adjacent to the cleaning member 59, and the first limiting member 565 and the cleaning member 59 are respectively located on one side of the circumference of the central axis of the cleaning brush base 541A. The cleaning component 54A can maintain the original motion trajectory, and the cleaning member 59 and the first limiting member 565 have a simple structure, which is conducive to reducing production difficulty and reducing production costs.

[0390] In some embodiments, as shown in Figures 56 and 57 , the first limiting member 565 includes at least one of a fifth limiting portion 5651 and a sixth limiting portion 5652. The first end 566 of the fifth limiting portion 5651 is adjacent to the cleaning member 59. The fifth limiting portion 5651 and the sixth limiting portion 5652 are respectively disposed on the same side of the cleaning chamber 56. Furthermore, along the height direction of the housing 101 (e.g., the vertical direction in Figure 57 ), the fifth limiting portion 5651, the cleaning member 59, and the sixth limiting portion 5652 are sequentially arranged, with the cleaning member 59 located between the fifth limiting portion 5651 and the sixth limiting portion 5652.

[0391] As shown in Figures 53 to 55 , when the first cleaning member 542 moves between the filter element 40 and the cleaning member 59, from the time the first cleaning member 542 separates from the filter element 40 to the time the first cleaning member 542 separates from the cleaning member 59, the first cleaning member 542 abuts against the fifth limiting portion 5651. After the first cleaning member 542 separates from the cleaning member 59, the first cleaning member 542 moves along the height direction of the housing 101 toward the side of the cleaning member 59 away from the fifth limiting portion 5651, and the first cleaning member 542 abuts against the sixth limiting portion 5652. This can reduce abnormal noise generated by the movement of the first cleaning member 542. When the first cleaning member 542 rotates from the position where it abuts against the cleaning member 59 to the position where it abuts against the fifth limiting portion 5651 or the sixth limiting portion 5652, the deformation process of the first blocking portion 544 is relatively slow. In this way, the first blocking portion 544 can be prevented from being compressed or expanded rapidly, which is beneficial to protecting the first blocking portion 544 and reducing abnormal noise generated by the movement of the first cleaning member 542.

[0392] In some embodiments, as shown in Figures 53 to 55 , the width of the fifth stopper 5651 in the thickness direction of the indoor unit 1 gradually decreases from the first end 566 of the fifth stopper 5651 to the second end 567 of the fifth stopper 5651. The first cleaning member 542 is further configured to move away from the center of the cleaning brush base 541A when rotating from the eighth position to the seventh position; the seventh position is when the first cleaning member 542 abuts the filter element 40 on the second reel 522, and the eighth position is when the first cleaning member 542 abuts the fifth stopper 5651.

[0393] As shown in Figures 53 and 54, when the first cleaning member 542 rotates from the eighth position to the seventh position along the first direction M, the first cleaning member 542 moves in a direction away from the center of the cleaning brush base 541A. Here, the first direction M can be a clockwise direction. The second end 567 of the fifth limiting portion 5651 is close to the second reel 522, and the first end 566 of the fifth limiting portion 5651 is close to the cleaning member 59. The distance between the first end 566 and the center of the cleaning brush base 541A is greater than the distance between the second end 567 and the center of the cleaning brush base 541A.

[0394] During the rotation of the first cleaning member 542 from the eighth position to the seventh position, when the first cleaning member 542 moves from abutting against the second end 567 to abutting against the second reel 522, the first cleaning member 542 moves in a direction away from the center of the cleaning brush base 541A. In this case, the width of the fifth limiting portion 5651 decreases from the second end 567 to the first end 566. This can slow the deformation of the first abutting portion 544 during the rotation of the cleaning assembly 54A. Furthermore, when the first cleaning member 542 moves between the cleaning member 59 and the second reel 522, it can abut against the fifth limiting portion 5651, thereby increasing the stability of the movement of the first cleaning member 542 relative to the cleaning brush base 541A and prolonging the service life of the cleaning assembly 54A.

[0395] In some embodiments, as shown in Figures 53 to 55, the width of the sixth limiting portion 5652 in the thickness direction of the indoor unit 1 decreases as it moves from the second end 569 of the sixth limiting portion 5652 toward the first end 568 of the sixth limiting portion 5652. Furthermore, along the height direction of the base 51, the second end 569 of the sixth limiting portion 5652 is lower than the cleaning assembly 54A. This facilitates the rotation of the cleaning assembly 54A. The first cleaning member 542 is further configured to first move away from the center of the cleaning brush base 541A and then move toward the center of the cleaning brush base 541A when rotating from the ninth position to the eighth position. The ninth position is the position in which the first cleaning member 542 abuts the sixth limiting portion 5652.

[0396] As shown in Figures 54 and 55, when the first cleaning member 542 rotates from the ninth position to the eighth position along the first direction M, the first cleaning member 542 first moves away from the center of the base 51 and then moves toward the center of the base 51. The first end 568 of the sixth limiting portion 5652 is close to the cleaning member 59, the second end 569 of the sixth limiting portion 5652 is away from the cleaning member 59, and the distance between the first end 568 of the sixth limiting portion 5652 and the center of the cleaning brush base 541A is greater than the distance between the second end 569 of the sixth limiting portion 5652 and the center of the cleaning brush base 541A.

[0397] During the rotation of the first cleaning member 542 from the ninth position to the eighth position, the first cleaning member 542 first rotates from abutting against the second end 569 of the sixth limiting portion 5652 to abutting against the first end 568 of the sixth limiting portion 5652, and the first cleaning member 542 moves in a direction away from the cleaning brush base 541A. During the rotation of the first cleaning member 542 toward the cleaning member 59, the first cleaning member 542 separates from the sixth limiting portion 5652, and then abuts against the cleaning member 59 and separates from the cleaning member 59. The first cleaning member 542 moves from abutting against the first end 566 of the fifth limiting portion 5651 to abutting against the second end 567 of the fifth limiting portion 5651. During this movement, the first cleaning member 542 moves toward the center of the cleaning brush base 541A. When the first cleaning member 542 abuts against the second end 569 of the sixth limiting portion 5652, the first cleaning member 542, driven by the cleaning brush base 541A, changes its rotational direction and rotates toward the direction closer to the fifth limiting portion 5651 (e.g., the second direction N). This allows the first cleaning member 542 to rotate between the cleaning member 59 and the filter element 40, and between the upper and lower sides of the cleaning member 59. This allows the cleaning member 59 to clean the first cleaning member 542, and the sixth limiting portion 5652 to limit the rotation of the first cleaning member 542. Here, the second direction N is opposite to the first direction M, for example, the second direction N is counterclockwise.

[0398] In some embodiments, as shown in Figures 53 to 55, the surfaces of the fifth limiting portion 5651 and the sixth limiting portion 5652 facing the first cleaning member 542 can be flat or curved, that is, the surface of the side where the fifth limiting portion 5651 abuts against the first cleaning member 542, and the surface of the side where the sixth limiting portion 5652 abuts against the first cleaning member 542 are flat or curved, respectively. For example, the surface of the fifth limiting portion 5651 facing the first cleaning member 542 is flat, and the surface of the sixth limiting portion 5652 facing the first cleaning member 542 is curved. When the first cleaning member 542 abuts against the second end 569 of the sixth limiting portion 5652, the sixth limiting portion 5652 can restrict the first cleaning member 542 from continuing to rotate. Therefore, one side of the fifth limiting portion 5651 and the sixth limiting portion 5652 is set to be a flat surface or an arc surface, which is beneficial to the relative rotation of the first cleaning member 542 and the first limiting member 565, so that the cleaning component 54A rotates smoothly and the deformation process of the first supporting portion 544 is more gentle, which is beneficial to extending the service life of the cleaning component 54A.

[0399] In some embodiments, as shown in Figures 27 to 55, along the height direction of the base 51, the first end 566 of the fifth limiting portion 5651 is higher than the cleaning member 59, and the first end 568 of the sixth limiting portion 5652 is lower than the cleaning member 59. In this case, along the height direction of the shell 101, the fifth limiting portion 5651, the cleaning member 59 and the sixth limiting portion 5652 are arranged in sequence from top to bottom, so that the first cleaning member 542 can be easily converted from abutting against the filter member 40 to abutting against the cleaning member 59, and from abutting against the first cleaning member 542 and the cleaning member 59 to abutting against the filter member 40. The fifth limiting portion 5651 and the sixth limiting portion 5652 can slow down the movement process of the first stopping portion 544 driving the first cleaning member 542 toward or away from the center of the cleaning brush base 541A, prolong the deformation process of the first stopping portion 544, and facilitate the fifth limiting portion 5651 and the sixth limiting portion 5652 to abut against the first cleaning member 542 respectively, thereby reducing the abnormal noise generated during the movement of the first cleaning member 542.

[0400] In some embodiments, as shown in FIG57 , the sixth limiting portion 5652 includes a third sub-limiting portion 5653 and a fourth sub-limiting portion 5654. The third sub-limiting portion 5653 is located at one end of the sixth limiting portion 5652 closer to the cleaning member 59, and the fourth sub-limiting portion 5654 is located at the other end of the sixth limiting portion 5652 farther from the cleaning member 59. One end of the third sub-limiting portion 5653 is connected to the inner wall of the cleaning chamber 56, and the fourth sub-limiting portion 5654 is connected to the other end of the third sub-limiting portion 5653. Furthermore, the distance between the center of the cleaning brush base 541A and the third sub-limiting portion 5653 is greater than the distance between the center of the cleaning brush base 541A and the fourth sub-limiting portion 5654. Therefore, when the first cleaning member 542 stops against the third sub-limiting portion 5653, the distance between the first cleaning member 542 and the center of the cleaning brush base 541A is greater than the distance between the first cleaning member 542 and the center of the cleaning brush base 541A when the first cleaning member 542 stops against the fourth sub-limiting portion 5654.

[0401] Therefore, the stroke of the first retaining portion 544 compressed when the first cleaning member 542 abuts against the fourth sub-limiting portion 5654 is greater than the stroke of the first retaining portion 544 compressed when the first cleaning member 542 abuts against the third sub-limiting portion 5653. Therefore, when the first cleaning member 542 rotates from the third sub-limiting portion 5653 to the fourth sub-limiting portion 5654, the first cleaning member 542 moves toward the center of the cleaning brush base 541A, and the fourth sub-limiting portion 5654 can limit the first cleaning member 542. For example, the fourth sub-limiting portion 5654 abuts against the first cleaning member 542, thereby preventing the first cleaning member 542 from continuing to rotate in a direction away from the third sub-limiting portion 5653.

[0402] In some embodiments, as shown in Figures 56 and 57, the thickness L of the first limiter 565 along the length direction of the shell 101 is any value within a preset range, for example, the preset range is 1mm to 3mm. In this case, L is greater than or equal to 1mm and less than or equal to 3mm (1mm≤L≤3mm). For example, the thickness L of the first limiter 565 along the length of the shell 101 is 1mm, 2mm or 3mm. If the thickness L of the first limiter 565 along the length direction of the shell 101 is greater than 3mm, the contact area between the first limiter 565 and the first cleaning member 542 will be increased. During the rotation of the first cleaning member 542, the friction generated between the first cleaning member 542 and the first limiter 565 is too large, affecting the rotation of the first cleaning member 542 and easily causing the bristles of the first cleaning member 542 to undergo irreversible deformation, thereby wasting materials and increasing costs.

[0403] If the thickness L of the first stopper 565 along the length of the base 51 is less than 1 mm, the first stopper 565 is too thin. During the rotation of the first cleaning member 542, when the first cleaning member 542 abuts against the first stopper 565, the first stopper 565 may easily break. Furthermore, if the first stopper 565 is too thin, it will increase production difficulty and cost. Therefore, setting the thickness L of the first stopper 565 along the length of the housing 101 within a predetermined range allows the first cleaning member 542 to be positioned when abutting against the filter element 40 and the cleaning member 59, thereby slowing the deformation of the first stopper 544 and reducing costs. It can also improve the structural strength of the first stopper 565 and extend the service life of the component.

[0404] In some embodiments, as shown in FIG56 , the cleaning assembly 54A includes multiple first stoppers 565. The multiple first stoppers 565 are spaced apart along the length of the housing 101 to reduce the force exerted on each first stopper 565. Furthermore, the multiple first stoppers 565 are located at both ends of the length of the housing 101, which helps improve the support capacity of the first stoppers 565 for the first cleaning member 542 and enhances the overall structural strength of the base 51.

[0405] In some embodiments, as shown in Figures 46, 47, and 51, the first receiving portion 55 includes a first receiving portion body 551 and a latching hole 553. The latching hole 553 is provided at one end of the first receiving portion body 551 along the length of the housing 101. The housing 101 also includes a first locating member provided on a side panel along one side of the housing 101 along the length. The first receiving portion 55 is engaged with the housing 101 through the latching hole 553 and the first locating member, thereby achieving a removable connection between the first receiving portion 55 and the housing 101.

[0406] As shown in Figure 58 , the first accommodating portion 55 further includes a baffle 552. The baffle 552 is disposed on the front side of the first accommodating portion body 551. One end of the baffle 552 is connected to the first accommodating portion body 551, and the other end of the baffle 552 extends upward in the height direction of the housing 101 (i.e., in the vertical direction as shown in Figure 45 ). The baffle 552 is configured to seal the gap between the front side of the first accommodating portion 55 and the front surface of the base 51 when the first accommodating portion 55 is assembled with the base 51, thereby preventing debris within the first accommodating portion 55 from spilling out of the gap.

[0407] In some embodiments, as shown in Figure 50, the cleaning assembly 54A further includes a third accommodating chamber 544A. The side of the second mounting portion 5412A facing the first cleaning member 542 is open, and the first mounting portion 5411A is disposed on the open side of the second mounting portion 5412A. The first mounting portion 5411A and the second mounting portion 5412A together define the third accommodating chamber 544A. The first retaining portion 544 is disposed within the third accommodating chamber 544A. Since the two ends of the first retaining portion 544 are respectively in contact with the first mounting portion 5411A and the second mounting portion 5412A, when the first mounting portion 5411A is squeezed, the first mounting portion 5411A can move toward the second mounting portion 5412A.

[0408] In some embodiments, as shown in FIG50 , the cleaning assembly 54A further includes at least one second positioning member 545 . Any of the at least one second positioning member 545 is disposed on either the first mounting portion 5411A or the second mounting portion 5412A. The first retaining portion 544 is sleeved on any of the second positioning members 545 .

[0409] In some embodiments, as shown in FIG50 , the cleaning brush base 541A further includes at least one first engaging portion 5414 and at least one second engaging portion 5415. The at least one first engaging portion 5414 is disposed on at least one of the two side walls of the first mounting portion 5411A along the width direction of the housing 101. The at least one second engaging portion 5415 is disposed on at least one of the two side walls of the second mounting portion 5412A along the width direction of the housing 101. The second engaging portion 5415 and the first engaging portion 5414 engage with each other to connect the first mounting portion 5411A to the second mounting portion 5412A. When the second engaging portion 5415 is engaged with the first engaging portion 5414, the second engaging portion 5415 can move within the first engaging portion 5414 along the height direction of the housing 101. For example, the first engaging portion 5414 can be a slot, and the second engaging portion 5415 can be a buckle.

[0410] For example, when at least one first mounting portion 5411A includes a plurality of first clamping portions 5414, the plurality of first clamping portions 5414 are spaced apart and arranged on both side walls of the first mounting portion 5411A along the width direction of the housing 101. The length of the first clamping portion 5414 along the height direction of the housing 101 is greater than the length of the second clamping portion 5415 along the height direction of the housing 101, so that the first mounting portion 5411A can move relative to the second mounting portion 5412A along the height direction of the housing 101.

[0411] It is understood that when the first cleaning member 542 abuts the first reel 521, the first mounting portion 5411A moves toward the second mounting portion 5412A. When the first cleaning member 542 separates from the first reel 521, the first mounting portion 5411A moves away from the second mounting portion 5412A. Thus, the first mounting portion 5411A and the second mounting portion 5412A are engaged and engaged via the first engaging portion 5414 and the second engaging portion 5415, which helps improve the assembly efficiency of the first mounting portion 5411A and the second mounting portion 5412A, simplifies the structure of the cleaning brush base 541A, and improves the stability of the assembly of the first mounting portion 5411A and the second mounting portion 5412A.

[0412] Moreover, when the second clamping portion 5415 is clamped in the first clamping portion 5414, the second clamping portion 5415 can move relative to the first clamping portion 5414, which is conducive to the movement of the first mounting portion 5411A relative to the second mounting portion 5412A, so that the first cleaning member 542 abuts against the first scroll 521, thereby improving the efficiency of the first cleaning member 542 in cleaning the filter element 40.

[0413] In some embodiments, as shown in Figures 49 to 51, the first mounting portion 5411A includes a first side portion 5416, a second side portion 5417, and a connecting portion 5413. The connecting portion 5413's ends along the thickness direction of the housing 101 connect to the upper sides of the first side portion 5416 and the second side portion 5417, respectively. The lower sides of the first side portion 5416 and the second side portion 5417 extend toward the second mounting portion 5412A along the height direction of the housing 101. The first side portion 5416, the second side portion 5417, and the connecting portion 5413 collectively constitute the first mounting portion 5411A.

[0414] The first side portion 5416 and the second side portion 5417 extend toward the second mounting portion 5412A. One end of the first retaining portion 544 abuts against the connecting portion 5413, and the other end of the first retaining portion 544 is sleeved on the second positioning member 545 provided on the second mounting portion 5412A. The first side portion 5416 and the second side portion 5417 are connected to the second mounting portion 5412A through the mating engagement of the first clamping portion 5414 and the second clamping portion 5415. When the first mounting portion 5411A and the second mounting portion 5412A are assembled, the first side portion 5416 and the second side portion 5417 are located on the outside of the two side walls of the second mounting portion 5412A along the thickness direction of the housing 101 to form a limit for the second mounting portion 5412A and prevent the first retaining portion 544 from falling out.

[0415] A first side portion 5416, a second side portion 5417 and a connecting portion 5413 are provided in the cleaning brush base 541A to constitute a first mounting portion 5411A, so that the first mounting portion 5411A has good structural strength, which is beneficial to the installation of the first mounting portion 5411A and the first cleaning member 542, making the installation of the first cleaning member 542 more secure and preventing the first cleaning member 542 from falling off the cleaning brush base 541A.

[0416] In some embodiments, as shown in Figures 50 and 51, the self-cleaning device 50 further includes a mounting groove 57A. The mounting groove 57A is disposed on a side of the connecting portion 5413 away from the second mounting portion 5412A. The first cleaning member 542 is disposed within the mounting groove 57A. The bottom surface of the mounting groove 57A is flush with the surface of the first cleaning member 542 near the first reel 521 and is arc-shaped. This allows the first cleaning member 542 to clean the filter element 40 when in contact with the first reel 521, and allows debris generated by cleaning to fall from the surface of the first cleaning member 542 into the cleaning chamber 56.

[0417] In some embodiments, as shown in Figures 47, 48, and 51, the self-cleaning device 50 is connected to two second transmission assemblies 70. The drive assembly 60 is connected to either of the two second transmission assemblies 70. The two second transmission assemblies 70 are respectively disposed at both ends of the self-cleaning device 50 along the length direction of the housing 101. The drive assembly 60 is disposed at one end of the housing 101 along the length direction of the housing 101.

[0418] The second transmission assembly 70 includes a first gear 71, a second gear 72, and a third gear 73. The first gear 71 meshes with the second gear 72. In the two second transmission assemblies 70, the two first gears 71 are respectively disposed at both ends of the second reel 522, the two second gears 72 are respectively disposed at both ends of the first reel 521, and the two third gears 73 are respectively disposed at both ends of the cleaning brush base 541A.

[0419] The drive assembly 60 includes a first drive motor 61 and a second drive motor 62. The first drive motor 61 is connected to one of the first gear 71 and the second gear 72 and is configured to drive the rotation of the first gear 71 and the second gear 72. The second drive motor 62 is connected to the third gear 73 and is configured to drive the third gear 73 to rotate.

[0420] Taking the connection between the first drive motor 61 and the second gear 72 as an example, when the self-cleaning device 50 is operating in the self-cleaning mode, the first drive motor 61 drives the second gear 72 to rotate in the first direction, thereby driving the first reel 521 to rotate in the first direction. The second gear 72 also drives the first gear 71 to rotate in the second direction, thereby driving the second reel 522 to rotate in the second direction. The second drive motor 62 drives the third gear 73 to rotate, thereby driving the cleaning brush base 541A to rotate.

[0421] It should be noted that the first direction is opposite to the second direction. When the second reel 522 rotates along the second direction and unwinds the filter element 40 , the first reel 521 rotates along the first direction and rewinds the filter element 40 .

[0422] In this way, under the action of the second reel 522 and the first reel 521, the filter element 40 tensioned between the second reel 522 and the first reel 521 moves along a predetermined trajectory, so that the first cleaning element 542 and the filter element 40 move relative to each other, so that the first cleaning element 542 cleans the filter element 40.

[0423] It is understood that both ends of the second reel 522 are connected to the first gear 71, and the second reel 522 is rotationally connected to the base 51 via the first gear 71. Both ends of the first reel 521 are connected to the second gear 72, and the first reel 521 is rotationally connected to the base 51 via the second gear 72. Both ends of the cleaning brush base 541A are connected to the third gear 73, and the cleaning brush base 541A is rotationally connected to the base 51 via the third gear 73.

[0424] Taking one of the self-cleaning devices as an example, the self-cleaning device 50 is connected to two second transmission assemblies 70, and the two second transmission assemblies 70 are respectively arranged at both ends of the self-cleaning device 50. The drive assembly 60 is connected to the second transmission assembly 70 near the side wall of the housing 101. The drive assembly 60 drives the second transmission assembly 70 to rotate, thereby driving the self-cleaning device 50 to rotate.

[0425] Since the second transmission assemblies 70 are respectively provided at both ends of the two self-cleaning devices 50 , it is not necessary to distinguish between left and right when installing the self-cleaning devices 50 and the housing 101 , which is beneficial to improving the installation efficiency of the self-cleaning devices 50 .

[0426] In some embodiments, as shown in FIG59 , the drive assembly 60 further includes a housing portion 63 and a bent portion 64. The housing portion 63 is connected to the housing 101. The bent portion 64 is disposed on one side of the housing portion 63 along the width direction of the housing 101, with the free end of the bent portion 64 extending along the length direction of the housing 101 toward the base 51. The bent portion 64, the housing portion 63, and the base 51 define a housing space, within which the first drive motor 61 and the second drive motor 62 are disposed.

[0427] In some embodiments, as shown in Figures 51 and 59, the base 51 further includes two end caps 514 and a connecting plate 516. The two end caps 514 are respectively disposed at both ends of the base 51 along the length direction of the housing 101. The connecting plate 516 connects the two end caps 514 and is located on the side of the two end caps away from the back plate 13A. The connecting plate 516 includes a gripping portion 5161, which is disposed on the top of the connecting plate 516. As shown in Figure 53, the gripping portion 5161 includes a plurality of grooves, which are recessed toward the first accommodating portion 55 along the height direction of the housing 101. The plurality of grooves are continuously disposed on the connecting plate 516 along the length direction of the housing 101.

[0428] In some embodiments, as shown in Figures 58 and 59 , the base 51 further includes a base front cover 513. The base front cover 513 is disposed on the front side of the housing 101 and below the connecting plate 516. The lower end of the base front cover 513 is detachably connected to the base body 511A. The upper end of the base front cover 513 is rotatably connected to the base body 511A.

[0429] The base front cover 513 is configured to open or close the front side of the cleaning chamber 56 so as to clean the first cleaning member 542 in the cleaning chamber 56.

[0430] In some embodiments, as shown in FIG58 , the base front cover 513 includes a rotational shaft 5131. The rotational shaft 5131 is disposed at both ends of the base front cover 513 along the length of the housing 101. The base body 511A also includes a rotational shaft hole disposed on the base body 511A. The rotational shaft 5131 engages with the rotational shaft hole to achieve a rotational connection between the base front cover 513 and the base body 511A. Thus, when the base front cover 513 is opened, the lower side of the base front cover 513 flips upward to open the front side of the cleaning chamber 56.

[0431] In some embodiments, as shown in Figures 50 and 51, the cleaning assembly 54A further includes at least one second stopper 546. The at least one second stopper 546 is disposed at one end of the cleaning brush base 541A along the length direction of the housing 101. For example, the at least one second stopper 546 includes one second stopper 546 disposed at one end of the second mounting portion 5412A along the length direction of the housing 101. For example, the at least one second stopper 546 includes two second stoppers 546, the two second stoppers 546 being disposed at both ends of the second mounting portion 5412A along the length direction of the housing 101.

[0432] As shown in Figure 60, the cleaning assembly 54A further includes a second stopper 547. The second stopper 547 is disposed on the inner wall of the cleaning chamber 56. The second limiting member 546 is configured to abut against the second stopper 547 to limit the rotation angle of the cleaning assembly 54A.

[0433] The second limiting member 546 is also configured to rotate to a seventh position so that the first limiting protrusion 5461 abuts against the second stop portion 547, thereby causing the first cleaning member 542 to not contact the first scroll 521, and the second limiting member 546 is rotated to an eighth position so that the second limiting protrusion 5462 abuts against the second stop portion 547, thereby causing the first cleaning member 542 to abut against the first scroll 521.

[0434] In some embodiments, as shown in FIG60 , the second stopper 547 includes a third sub-stopper 5471 and a fourth sub-stopper 5472. When the second stopper 546 rotates to the seventh position, the first stopper protrusion 5461 abuts the third sub-stopper 5471, and the first cleaning member 542 is not in contact with the first reel 521. When the second stopper 546 rotates to the eighth position, the second stopper protrusion 5462 abuts the fourth sub-stopper 5472, and the first cleaning member 542 abuts the first reel 521, thereby brushing away debris from the filter element 40. For example, the third sub-stopper 5471 and the fourth sub-stopper 5472 are configured as stop surfaces.

[0435] One end of the third sub-stop 5471 is connected to one end of the fourth sub-stop 5472, and the third sub-stop 5471 is located below the fourth sub-stop 5472. The other end of the third sub-stop 5471 extends along the thickness direction of the housing 101 toward the direction close to the back plate 13A and extends at an angle downward. The other end of the fourth sub-stop 5472 extends along the thickness direction of the housing 101 toward the direction close to the back plate 13A and extends at an angle upward.

[0436] As the cleaning brush base 541A rotates counterclockwise and the second limiting member 546 rotates from the seventh position to the eighth position, the first limiting protrusion 5461 changes from abutting against the third sub-stop portion 5471 to separating, and then the second limiting protrusion 5462 abuts against the fourth sub-stop portion 5472, so that the first cleaning member 542 abuts against the first scroll 521 to clean the filter element 40.

[0437] In this way, the third sub-stop portion 5471 and the fourth sub-stop portion 5472 are set in the second stop portion 547, which is beneficial to the abutment between the first limiting protrusion 5461 and the second limiting protrusion 5462 and the second stop portion 547, thereby improving the stability and reliability of the abutment between the second limiting member 546 and the second stop portion 547 and reducing the rotation error of the cleaning component 54A.

[0438] In some embodiments, the cleaning member 59 is disposed on a side wall of the cleaning chamber 56 opposite to the second stopper 547. When the second stopper 546 rotates back and forth between the seventh position and the eighth position, the cleaning member 59 is configured to clean debris on the first cleaning member 542.

[0439] In some embodiments, as shown in Figures 49 and 59, the base front cover 513 further includes an escape section 5132 and an extension section 5133. The escape section 5132 is located between the two end covers 514 and protrudes in a direction away from the central axis of the first cleaning member 542. The rotating shaft 5131 is connected to the side of the escape section 5132 away from the first cleaning member 542. The extension section 5133 extends along the height direction of the housing 101. The upper end of the extension section 5133 is connected to the lower end of the escape section 5132, and the lower end of the extension section 5133 is engaged with the first receiving portion 55.

[0440] In some embodiments, as shown in FIG49 , the base 51 further includes a base rear cover 515 . The base rear cover 515 is disposed between the two end covers 514 and is positioned on the rear side of the cleaning chamber 56 along the thickness direction of the housing 101 . The base rear cover 515 is opposite the base front cover 513 and is rotatably connected to the base body 511A. The base rear cover 515 includes a connecting groove disposed thereon. The connecting groove is open on one side facing the cleaning assembly 54A. A sealing member is disposed within the connecting groove.

[0441] When the base rear cover 515 is closed to close the rear side of the cleaning chamber 56, the sealing member is configured to seal the gap between the base rear cover 515 and the first reel 521. When the base rear cover 515 is opened to open the rear side of the cleaning chamber 56, the sealing member and the first reel 521 are spaced apart from each other.

[0442] The rear side of the sealing member is located in the connecting groove, and the front side of the sealing member extends out of the connecting groove and abuts against the first reel 521. For example, the sealing member is a sponge.

[0443] In this way, the connecting groove is provided on the base back cover 515, and the sealing member is provided in the connecting groove, so that the first opening 563 of the cleaning chamber 56 can be abutted against the first scroll 521 through the sealing member to form a seal on the first opening 563, which is beneficial to prevent the dust in the cleaning chamber 56 from flowing to the fan assembly 30 or the indoor heat exchanger 105, thereby extending the service life of the indoor unit 1.

[0444] In some embodiments, as shown in FIG49 , the width of the second opening 564 is arranged to be inclined from top to bottom along the height direction of the housing 101, that is, the cross-sectional area of ​​the second opening 564 decreases from top to bottom along the height direction of the housing 101. The second opening 564 is located at the bottom of the cleaning chamber 56. The end of the second opening 564 near the cleaning chamber 56 has a larger opening, and the end near the first accommodating portion 55 has a smaller opening.

[0445] In some embodiments, as shown in FIG49 , the cleaning chamber 56 further includes a first extension section 561 and a second extension section 562. The first extension section 561 and the second extension section 562 are disposed at the lower portion of the cleaning chamber 56. The first extension section 561 is connected to the front wall of the cleaning chamber 56, and the second extension section 562 is connected to the rear wall of the cleaning chamber 56. A second opening 564 is defined between the first extension section 561 and the second extension section 562. The distance between the first extension section 561 and the second extension section 562 decreases from top to bottom along the height direction of the housing 101.

[0446] The other ends of the first extension section 561 and the second extension section 562 are flush with the bottom of the cleaning chamber 56 to prevent the first extension section 561 and the second extension section 562 from interfering with the installation of the first accommodation portion 55 .

[0447] The distance between the first extension section 561 and the second extension section 562 decreases from top to bottom along the height direction of the housing 101, which helps to ensure that debris removed by the first cleaning member 542 falls into the first accommodating portion 55, reducing the possibility of debris accumulating inside the cleaning chamber 56 or at the second opening 564, and reducing the risk of debris falling outside the first accommodating portion 55. Furthermore, the first extension section 561 and the second extension section 562 are located entirely below the first cleaning member 542, which helps to guide debris removed from the filter element 40 into the first accommodating portion 55 and prevent debris from accumulating in the cleaning chamber 56.

[0448] 49 and 51 , the self-cleaning device 50 further includes a plug-in portion 58 . The plug-in portion 58 is disposed on the connecting plate 516 and can move relative to the connecting plate 516 along the length direction of the housing 101 .

[0449] Providing the plug-in portion 58 in the self-cleaning device 50 facilitates installation and removal of the self-cleaning device 50 and improves the efficiency of installation and removal of the self-cleaning device 50 .

[0450] In some embodiments, as shown in FIG61 , the fan assembly 30 includes an indoor fan 31 and a fan motor 32. The indoor fan 31 is connected to the fan motor 32. The fan motor 32 is configured to drive the indoor fan 31 to rotate.

[0451] In some embodiments, as shown in FIG61 , the indoor unit 1 further includes a fresh air assembly 90. The fresh air assembly 90 includes a fresh air blower 91 and a fresh air volute 92. The fresh air volute 92 is disposed within the housing 101. The fresh air volute 92 includes a fresh air inlet 921 and a fresh air outlet 922. The fresh air inlet 921 is disposed at one end of the fresh air volute 92, and the fresh air outlet 922 is disposed at the other end of the fresh air volute. The fresh air blower 91 is disposed within the fresh air volute 92 and is configured to draw in and pump out outdoor air.

[0452] In some embodiments, as shown in Figure 61, the indoor heat exchanger 105 includes a heat exchange air duct 1051. The heat exchange air duct 1051 is disposed in the indoor heat exchanger 105 and communicates with the air outlet.

[0453] In some embodiments, as shown in Figure 62, the indoor unit 1 further includes a motor drive assembly 81A, a control assembly 82A, a storage assembly 83A, and a timer 84A. The motor drive assembly 81A is configured to control the start and stop of the fan motor 32 and to collect the current value In of the fan motor 32 when operating at the current operating speed Rn. The storage assembly 83A is configured to store a target current value Im. The target current value Im is the current value of the fan motor 32 when the filter element 40 is free of foreign matter and operating at the current operating speed Rn.

[0454] The timer 84A is configured to count time. The control component 82A is connected to the motor drive component 81A, the self-cleaning device 50, the storage component 83A and the timer 84A respectively to control the motor drive component 81A, the self-cleaning device 50 and the timer 84A.

[0455] In some embodiments, as shown in FIG. 63 , the control component 82A is configured to execute steps S101 to S105 .

[0456] In step S101 , a signal representing the current current value In of the fan motor 32 when operating at the current operating speed Rn, collected by the motor drive component 81A, is received.

[0457] In step S102, it is determined whether the current value In is less than the difference between the target current value Im and the preset current value I0 of the fan motor 32 when there is no debris in the filter element 40 and the fan motor 32 is operating at the current operating speed Rn. If so, step S103 is executed; if not, step S101 is returned and re-executed.

[0458] In some embodiments, when the control component 82A receives a signal representing the current current value In of the fan motor 32 when it is operating at the current operating speed Rn collected by the motor drive component 81A, the control component 82A determines the relationship between the current current value In when the fan motor 32 is operating at the current operating speed Rn and the target current value Im when the fan motor 32 is free of debris in the filter element 40 and operates at the current operating speed Rn.

[0459] If the current current value In when the fan motor 32 operates at the current operating speed Rn is less than the difference between the target current value Im when the fan motor 32 is free of debris in the filter element 40 and operates at the current operating speed Rn and the preset current value I0, it indicates that there is a lot of debris attached to the filter element 40 and the filter element 40 needs to be cleaned.

[0460] If the current value In of the fan motor 32 when operating at the current operating speed Rn is greater than or equal to the target current value Im of the fan motor 32 when operating at the current operating speed Rn without any foreign matter on the filter element 40 , it indicates that no foreign matter is attached to the filter element 40 .

[0461] It should be noted that the preset current value I0 is a value preset in the control component 82A. The preset current value I0 is any value between 1 mA and 3 mA, for example, 1 mA, 2 mA, or 3 mA. The preset current value I0 can be adjusted according to actual needs, and this disclosure does not limit this.

[0462] In step S103 , the timer 84A is controlled to count to obtain the duration Tn, and it is determined whether the duration Tn is greater than or equal to the preset time threshold T0 . If so, step S104 is executed; otherwise, step S105 is executed.

[0463] In some embodiments, when the control component 82A determines that the current current value In when the fan motor 32 operates at the current operating speed Rn is less than the difference between the target current value I0 and the preset current value I0 when the fan motor 32 is free of debris in the filter element 40 and operates at the current operating speed Rn, the control component 82A controls the timer 84A to time to obtain the duration Tn, and determines the size relationship between the duration Tn and the preset time threshold T0.

[0464] If the current current value In of the fan motor 32 when operating at the current operating speed Rn is less than the difference between the target current value Im and the preset current value I0 when the fan motor 32 is operating at the current operating speed Rn and there is no debris on the filter element 40, and the duration Tn in this state is greater than or equal to the preset time threshold T0, it indicates that the fan motor 32 has been operating in the state where the current current value In is less than the difference between the target current value Im and the preset current value I0 for a long time, that is, the indoor unit 1 has been operating for a long time with a lot of debris attached to the filter element 40. Therefore, it is necessary to clean the filter element 40 to ensure the cooling or heating effect of the indoor unit 1.

[0465] It should be noted that the preset time threshold T0 is a value preset in the control component 82A. The preset time threshold T0 can be adjusted according to actual needs and is not limited in this disclosure. For example, the preset time threshold T0 includes a first preset time threshold T1, a second preset time threshold T2, and a third preset time threshold T3. The first preset time threshold T1 is greater than the second preset time threshold T2, and the second preset time threshold T2 is greater than the third preset time threshold T3. For example, the first preset time threshold T1 is 15 minutes, the second preset time threshold T2 is 10 minutes, and the third preset time threshold T3 is 5 minutes.

[0466] In step S104 , the duration Tn is reset to zero, and the self-cleaning device 50 is controlled to clean the filter element 40 .

[0467] In step S105, the duration Tn is cleared to zero, and the process returns to execute step S102 again.

[0468] In some embodiments, when the control component 82A determines that the current current value In when the fan motor 32 operates at the current operating speed Rn is less than the difference between the target current value Im and the preset current value I0 when the fan motor 32 is free of debris in the filter element 40 and operates at the current operating speed Rn, and the duration Tn is greater than or equal to the preset time threshold T0, the control component 82A determines that the filter element 40 needs to be cleaned, and resets the duration Tn to zero, and controls the self-cleaning device 50 to clean the filter element 40.

[0469] When the control component 82A determines that the current current value In of the fan motor 32 when it is operating at the current operating speed Rn is less than the difference between the target current value Im when the fan motor 32 is free of debris in the filter element 40 and operating at the current operating speed Rn and the preset current value I0, and the duration Tn is less than the preset time threshold T0, the control component 82A clears the duration Tn, controls the indoor unit 1 to continue operating, and then re-determines the relationship between the current current value In when the fan motor 32 is operating at the current operating speed Rn and the target current value Im when the fan motor 32 is free of debris in the filter element 40 and operating at the current operating speed Rn.

[0470] In some embodiments, the indoor unit 1 further includes a cleaning indicator light which is provided on the housing 101 and is configured to prompt the user whether to clean the filter element 40 .

[0471] In some embodiments, as shown in FIG. 64 , before step S104 , the control component 82A is further configured to execute steps S201 to S203 .

[0472] In step S201, the local current time Ti is obtained, and it is determined whether the local current time Ti is within the preset time range Ty. If so, step S202 is executed, and if not, step S203 is executed.

[0473] In step S202, the cleaning indicator light is controlled to light up.

[0474] In step S203, the cleaning indicator light is controlled to be turned off.

[0475] In some embodiments, when the current current value In when the fan motor 32 is operating at the current operating speed Rn is less than the difference between the target current value Im when the fan motor 32 is operating at the current operating speed Rn and the preset current value I0 when the filter element 40 is free of debris, and the duration threshold Tn is greater than the preset time threshold T0, the control component 82A obtains the current time Ti at the location of the indoor unit 1 and determines the relationship between the local current time Ti and the preset time range Ty. If the local current time Ti is within the preset time range Ty, the cleaning indicator light is controlled to light up to prompt the user to clean the filter element 40. If the local current time Ti is outside the preset time range Ty, the cleaning indicator light is controlled to turn off.

[0476] It should be noted that the preset time range Ty is a value preset in the control component 82A. The preset time range Ty can be adjusted according to actual needs and is not limited in this disclosure. For example, the preset time range Ty is 06:00 to 20:00.

[0477] When the control component 82A determines that the filter 40 needs to be cleaned, it can obtain the current time Ti at the location of the indoor unit 1 via wireless communication technology. If the indoor unit 1 is located in Beijing and the current time Ti is during the day, that is, between 06:00 and 20:00, the control component 82A controls the cleaning indicator to light up to remind the user to clean the filter 40. At this time, the user can manually choose whether to enable the self-cleaning function of the indoor unit 1.

[0478] When the indoor unit 1 is located in Beijing and the current time Ti is at night, that is, 20:00 to 06:00, the control component 82A controls the cleaning indicator light to turn off and controls the indoor unit 1 to continue running.

[0479] In some embodiments, when the indoor unit 1 is used in an air conditioner, the air conditioner includes a compressor. The indoor unit 1 also includes an air deflector disposed at the air outlet to open and close the air outlet. For example, when the indoor unit 1 is in operation, the air deflector opens to expose the air outlet, allowing air heated by the indoor heat exchanger 105 to flow into the room from the air outlet.

[0480] The air guide plate is rotatable relative to the housing 101 to adjust the direction of the air flowing out of the air outlet so that air can flow at multiple locations in the room.

[0481] In some embodiments, as shown in FIG. 65 , before step S104 , the control component 82A is further configured to execute step S301 .

[0482] In step S301, the compressor is controlled to stop working, the fan assembly 30 is controlled to stop running, and the air guide plate is controlled to close.

[0483] For example, before the control component 82A controls the self-cleaning device 50 to clean the filter element 40, the control component 82A controls the compressor to stop working, controls the fan component 30 to stop running, and controls the air guide plate to close.

[0484] In some embodiments, the control assembly 82A is further configured to control the rotation of the first drive motor 61 and the second drive motor 62 to control the self-cleaning device 50 to clean the filter element 40. For example, the control assembly 82A controls the rotation of the second drive motor 62 to drive the rotation of the first cleaning element 542, thereby cleaning debris from the filter element 40. The control assembly 82A controls the rotation of the first drive motor 61 in the first direction to drive the rotation of the second reel 522 in the first direction, thereby causing the filter element 40 to be wound on the second reel 522.

[0485] In addition, when the self-cleaning device 50 cleans the filter element 40 , the control component 82A controls the self-cleaning device 50 , eliminating the need for manual operation by the user to change the rotation direction of the first drive motor 61 , thereby facilitating automation of the self-cleaning device 50 .

[0486] In some embodiments, as shown in Figure 66, when the control component 82A controls the self-cleaning device 50 to clean the filter element 40, the control component 82A is further configured to execute steps S401 to S408. That is, step S104 includes steps S401 to S409.

[0487] In step S401 , the second driving motor 62 is controlled to rotate, and the first pulse number N1 of the second driving motor 62 is counted.

[0488] In some embodiments, the control component 82A counts the first pulse number N1 of the second drive motor 62 while controlling the second drive motor 62 to rotate. That is, the control component 82A controls the second drive motor 62 to start rotating to clean debris from the filter element 40, and counts the first pulse number N1 of the second drive motor 62 to determine the number of times the first cleaning element 542 cleans the filter element 40.

[0489] In step S402 , it is determined whether the first pulse number N1 is greater than or equal to the first preset pulse number N10 . If so, step S403 is executed; if not, the process returns to step S401 .

[0490] In step S403 , the first driving motor 61 is controlled to rotate in the first direction, and a second pulse number N21 of the first driving motor 61 rotating in the first direction is counted.

[0491] In some embodiments, the control component 82A counts the first pulse number N1 and determines the magnitude relationship between the first pulse number N1 and the first preset pulse number N10. When the first pulse number N1 is greater than or equal to the first preset pulse number N10, the control component 82A controls the first drive motor 61 to rotate in the first direction and counts a second pulse number N21 of the first drive motor 61 rotating in the first direction.

[0492] It should be noted that the first preset pulse number N10 is a value preset in the control component 82A and can be adjusted according to actual needs, which is not limited by the present disclosure. For example, the first preset pulse number N10 is any value between 8 and 12, such as 8, 10, or 12.

[0493] In step S404 , it is determined whether the second pulse number N21 is greater than or equal to the second preset pulse number N20 . If so, step S405 is executed. If not, the process returns to step S403 and is repeated.

[0494] In step S405 , the first driving motor 61 is controlled to rotate in the second direction, and a third pulse number N31 of the first driving motor 61 rotating in the second direction is counted.

[0495] In step S406 , it is determined whether the third pulse number N31 is greater than or equal to the second preset pulse number N20 . If so, step S407 is executed. If not, the process returns to step S405 and is repeated.

[0496] It should be noted that the second preset pulse number N20 is a value preset in the control component 82A and can be adjusted according to actual needs, which is not limited by the present disclosure. For example, the second preset pulse number N20 is any value between 1100 and 1300, such as 1100, 1200, or 1300.

[0497] In some embodiments, when the self-cleaning device 50 cleans the filter element 40, the control component 82A controls the second drive motor 62 to rotate at 200 pulses per second, and the control component 82A controls the first drive motor 61 to rotate at 110 pulses per second. In other words, the number of pulses controlling the rotation of the second drive motor 62 is greater than the number of pulses controlling the rotation of the first drive motor 61, that is, the rotation speed of the first cleaning member 542 is greater than the rotation speed of the second reel 522.

[0498] In step S407 , the first pulse number N1 , the second pulse number N21 and the third pulse number N31 are cleared to zero, and the number of reciprocating times Nt of the filter element 40 along the predetermined trajectory is calculated.

[0499] In step S408, it is determined whether the number of reciprocating times Nt is greater than or equal to the preset number Ns. If so, step S409 is executed; if not, step S401 is returned and executed again.

[0500] In step S409 , the self-cleaning device 50 is controlled to stop cleaning the filter element 40 .

[0501] In some embodiments, when the third pulse number N22 is greater than or equal to the second preset pulse number N20, the first pulse number N1, the second pulse number N21, and the third pulse number N22 are reset to zero. The control assembly 82A controls the second drive motor 62 to rotate, controls the first drive motor 61 to repeatedly rotate in the first direction and in the second direction, and calculates the number of reciprocating times Nt of the filter element 40 being wound and unwound on the second reel 522.

[0502] When the filter element 40 reciprocates for a predetermined number of times Ns, the filter element 40 becomes relatively clean after being repeatedly cleaned by the first cleaning element 542. In other words, when the number of reciprocating times Nt is greater than or equal to the predetermined number of times Ns, it indicates that the self-cleaning device 50 has completed cleaning the filter element 40.

[0503] It should be noted that the preset number Ns is a value preset in the control component 82A, and the preset number Ns can be adjusted according to actual needs, and this disclosure does not limit this. For example, the preset number Ns is any value between 8 and 12, such as 8, 10, or 12.

[0504] It should be noted that any one of the technical solutions disclosed in the present disclosure can solve one or more of the above-mentioned technical problems and achieve certain invention purposes to a certain extent; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above-mentioned technical problems and achieve certain invention purposes; some of the technical disclosures can also be selected to combine into an overall solution, while adopting related technologies and deteriorated solutions, but the deterioration trend can be compensated by the means disclosed in this technology, and the above-mentioned one or more technical problems can be solved to a certain extent as a whole and certain invention purposes can be achieved; each technical disclosure combined into a complete technical solution constitutes an organic and inseparable overall solution, which solves technical problems as a whole and achieves certain invention purposes.

[0505] Any technical disclosure in this disclosure, as well as the recombination of multiple technical disclosures, can form a complete technical solution and can solve one or more of the above-mentioned technical problems and achieve the purpose of the invention. They all belong to the content of this disclosure and are the content that is directly and unambiguously determined based on the content of this disclosure.

[0506] It should be noted that any one of the technical solutions disclosed in the present disclosure can solve one or more of the above-mentioned technical problems and achieve certain invention purposes to a certain extent; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above-mentioned technical problems and achieve certain invention purposes; some of the technical disclosures can also be selected to combine into an overall solution, while adopting related technologies and deteriorated solutions, but the deterioration trend can be compensated by the means disclosed in this technology, and the above-mentioned one or more technical problems can be solved to a certain extent as a whole and certain invention purposes can be achieved; each technical disclosure combined into a complete technical solution constitutes an organic and inseparable overall solution, which solves technical problems as a whole and achieves certain invention purposes.

[0507] Any technical disclosure in this disclosure, as well as the recombination of multiple technical disclosures, can form a complete technical solution and can solve one or more of the above-mentioned technical problems and achieve the purpose of the invention. They all belong to the content of this disclosure and are the content that is directly and unambiguously determined based on the content of this disclosure.

[0508] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An air conditioner, comprising: Outdoor unit; and The indoor unit is connected to the outdoor unit and comprises: A housing, the housing comprising an air inlet and an air outlet; an indoor heat exchanger disposed in the housing and configured to perform heat exchange with air flowing therethrough; a fan assembly, disposed on a side of the indoor heat exchanger away from the air inlet, and configured to drive indoor air into the housing from the air inlet, and to send the air after heat exchange with the indoor heat exchanger out from the air outlet; a filter element configured to filter dust in air flowing through the filter element; and at least one self-cleaning device detachably connected to the housing; Wherein, any one of the at least one self-cleaning device comprises: A first bracket is disposed in the housing and located between the air inlet and the indoor heat exchanger; a reel assembly, the reel assembly being connected to the first end of the filter element and being disposed close to the first end of the first bracket; the reel assembly being configured to drive the filter element to move along the first bracket between a first position and a second position; wherein when the filter element is in the first position, along the thickness direction of the first bracket, the filter element is located on one side of the first bracket, and the second end of the filter element abuts against the second end of the first bracket; when the filter element is in the second position, the filter element is wound around the periphery of the reel assembly; and A tensioning assembly is connected to the first bracket and the second end of the filter element; the tensioning assembly is configured to keep the filter element in a tensioned state when the filter element moves between the first position and the second position.

2. The air conditioner according to claim 1, wherein: A side surface of the first bracket facing the filter element is recessed in a direction away from the filter element to form a first receiving groove; at least a portion of the tensioning assembly is disposed in the first receiving groove.

3. The air conditioner according to claim 1 or 2, wherein: The first bracket comprises: A first guide shaft, the first guide shaft is arranged at an end of the first bracket away from the reel assembly; and a second guide shaft, the second guide shaft being located between the first guide shaft and the reel assembly; Wherein, when the filter element is in the second position, the tensioning assembly bypasses the first guide shaft and the second guide shaft and is connected to the second end of the filter element.

4. The air conditioner according to claim 2 or 3, wherein: The tensioning assembly is disposed adjacent to the reel assembly and comprises: A tensioning assembly body is disposed in the first receiving groove; and A connecting line; a first end of the connecting line is connected to the tensioning component body and is movable relative to the tensioning component body; a second end of the connecting line is connected to the second end of the filter element.

5. The air conditioner according to claim 4, wherein: The tensioning assembly body comprises: a second bracket, the second bracket being disposed within the first bracket; and A connector is disposed in the second bracket; the first end of the connecting line is wound around the connector; the connector is configured to apply a force to the connecting line so that the direction of the pulling force applied by the connecting line on the filter element is opposite to the direction of the pulling force applied by the reel assembly on the filter element.

6. The air conditioner according to any one of claims 1 to 5, wherein: The indoor unit further comprises a clamping member; the clamping member is connected to the second end of the filter element; The first bracket comprises: A first bracket body is disposed between the air inlet and the indoor heat exchanger; the first bracket body includes a vent; when the filter element is in the first position, the filter element is opposite to the first bracket body; The first assembly section; and A second assembly portion, wherein the first assembly portion and the second assembly portion are respectively connected to two sides of the first bracket body along the second direction; Wherein, recessed portions are formed on surfaces opposite to each other of the first assembly portion and the second assembly portion, and two ends of the clamping member are respectively located in the recessed portions of the first assembly portion and the second assembly portion; when the filter element moves between the first position and the second position, the clamping member can move in the recessed portions.

7. The air conditioner according to any one of claims 1 to 6, wherein: Any of the self-cleaning devices also includes: a base, the base comprising a cleaning chamber; A third reel disposed in the cleaning chamber; and A first cleaning member, comprising a first sub-cleaning member and a second sub-cleaning member, wherein the first sub-cleaning member and the second sub-cleaning member are arranged at an outer peripheral side of the third reel with a spacing therebetween; wherein the third reel is configured to rotate to drive the first sub-cleaning member and the second sub-cleaning member to rotate, so that at least one of the first sub-cleaning member or the second sub-cleaning member contacts the filter element; Wherein, the rigidity of the first sub-cleaning member is greater than or equal to the rigidity of the second sub-cleaning member.

8. The air conditioner according to claim 7, wherein: Along the radial direction of the third reel, the length of the first sub-cleaning member is less than or equal to the length of the second sub-cleaning member.

9. The air conditioner according to claim 7 or 8, wherein: The self-cleaning device further comprises a resisting portion; a first end of the resisting portion is located inside the third reel; a second end of the resisting portion extends toward the radially outer side of the third reel and abuts against the first sub-cleaning member and the second sub-cleaning member; Wherein, when at least one of the first sub-cleaning member or the second sub-cleaning member contacts the filter element, the blocking portion is in a compressed state.

10. The air conditioner according to any one of claims 7 to 9, wherein: The first cleaning member includes a plurality of sub-cleaning members; the plurality of sub-cleaning members are arranged at intervals on the outer peripheral side of the third reel; when the third reel rotates, the third reel drives the plurality of sub-cleaning members to clean the filter member.

11. The air conditioner according to any one of claims 7 to 10, wherein: Any of the self-cleaning devices also includes: at least one follower; the follower is connected to the end of the reel assembly and is coaxially arranged with the reel assembly; and A mounting member is connected to the base and is located on a side of the driven member away from the reel assembly; the mounting member is configured to drive the driven member to rotate when rotating.

12. The air conditioner according to claim 11, wherein: The mounting member includes a first clamping portion, the first clamping portion is connected to the driven member and is configured to drive the driven member to rotate when rotating, so as to drive the scroll assembly to rotate, and then drive the filter element to move; Wherein, a side surface of the first clamping portion away from the driven member protrudes in a direction away from the driven member.

13. The air conditioner according to claim 11, wherein: The mounting member includes a second clamping portion, the second clamping portion is connected to the driven member and is configured to drive the driven member to rotate when rotating, so as to drive the scroll assembly to rotate, and further drive the filter element to move; Wherein, a side surface of the second clamping portion away from the driven member is recessed toward a direction approaching the driven member.

14. The air conditioner according to any one of claims 11 to 13, wherein: The reel assembly includes a second reel, the second reel is rotatably connected to the base and connected to the filter element; the second reel is disposed in the cleaning chamber; The at least one follower includes a second follower connected to an end of the second spool and connected to the mounting member.

15. The air conditioner according to claim 14, wherein: The at least one self-cleaning device comprises two self-cleaning devices, the two self-cleaning devices are arranged in parallel along the second direction, and the two second reels in the two self-cleaning devices are coaxially arranged; The indoor unit further comprises: a transmission assembly, drivingly connected to the two second reels; and At least one motor, the at least one motor includes a first motor; the first motor is connected to any one of the two second reels and is configured to drive any one of the second reels to rotate, so as to drive the transmission component to rotate, and drive the other second reel of the two second reels to rotate.

16. The air conditioner according to claim 15, wherein: The transmission assembly comprises: A first transmission member is transmission-connected to a second driven member provided at an end of any one of the second reels; a second transmission member drivingly connected to a second driven member disposed at an end of the other second reel; and A connecting shaft, wherein the first transmission member and the second transmission member are respectively connected to two ends of the connecting shaft.

17. The air conditioner according to claim 16, wherein: The transmission assembly also includes a clutch; Along the axial direction of the connecting member, the clutch is arranged between the connecting member and the second transmission member, and is arranged coaxially with the connecting member and the second transmission member; The clutch is configured to switch to a first state to connect the connecting member to the second transmission member, or to switch to a second state to disconnect the connecting member from the second transmission member.

18. The air conditioner according to claim 17, wherein: The clutch is fixedly connected to the second transmission member, and the clutch is in contact with the connecting member; Wherein, the connecting member is configured to apply a force to the clutch along the axial direction; when the force is greater than a preset threshold, the clutch enters the first state; when the force is less than the preset threshold, the clutch enters the second state.

19. The air conditioner according to any one of claims 16 to 18, wherein: At least a portion of the connecting shaft is located between the two second reel shafts.

20. The air conditioner according to any one of claims 16 to 19, wherein: The connecting member, the first transmission member and the second transmission member are coaxially arranged.

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