Air conditioner

Abstract

Provided is an air conditioner, comprising an indoor unit. The indoor unit comprises a housing, a filtering member and a self-cleaning device. The filtering member is configured to filter impurities in the air flowing through the filtering member. The self-cleaning device is configured to clean impurities on the filtering member, and comprises a third reel and a first cleaning member. The first cleaning member comprises a first sub-cleaning member and a second sub-cleaning member, the first sub-cleaning member and the second sub-cleaning member being spaced apart on the peripheral side of the third reel. The third reel is configured to rotate so as to drive the first sub-cleaning member and the second sub-cleaning member to rotate, such that at least one of the first sub-cleaning member or the second sub-cleaning member is in contact with the filtering member. The rigidity of the first sub-cleaning member is greater than or equal to the rigidity of the second sub-cleaning member.

Description

air conditioner

[0001] This application claims priority to Chinese patent application No. 202323635572.0 filed on December 29, 2023, priority to Chinese patent application No. 202323661842.5 filed on December 29, 2023, priority to Chinese patent application No. 202323661853.3 filed on December 29, 2023, and priority to Chinese patent application No. 202323638392.8 filed on December 29, 2023, the entire contents of which are incorporated herein 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 is used to exchange 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 debris in the air from entering the indoor unit, and cleans the debris attached to the filter element through the self-cleaning device to keep the indoor unit running efficiently.

[0005] Summary of the Invention

[0006] An air conditioner is provided, comprising an outdoor unit and an indoor unit. 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 exchange heat 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 through the air inlet and to discharge the air, after heat exchange with the indoor heat exchanger, through the air outlet. The filter element is configured to filter impurities from the air passing through the filter element. The at least one self-cleaning device is configured to clean impurities from the filter element. Each of the at least one self-cleaning devices comprises a base, a drive assembly, a third reel, and a first cleaning element. The base comprises a cleaning chamber. The drive assembly is connected to the filter element and configured to drive the filter element to move. The third reel is disposed within the cleaning chamber. The first cleaning member includes a first sub-cleaning member and a second sub-cleaning member, and the first sub-cleaning member and the second sub-cleaning member are spaced apart and arranged on the outer periphery of the third reel. 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 member. The stiffness of the first sub-cleaning member is greater than or equal to the stiffness of the second sub-cleaning member. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0008] FIG2 is an exploded view of an indoor unit of an air conditioner according to some embodiments;

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

[0010] FIG4 is a structural diagram of a filter element and a self-cleaning device of an air conditioner according to some embodiments;

[0011] FIG5 is a perspective view of a filter element and a self-cleaning device of an air conditioner according to some embodiments;

[0012] FIG6 is another structural diagram of a filter element and a self-cleaning device of an air conditioner according to some embodiments;

[0013] FIG7 is a perspective view of a filter element, a self-cleaning device, and a driven element of an air conditioner according to some embodiments;

[0014] FIG8 is a perspective view of a filter element, a self-cleaning device, and a mounting element of an air conditioner according to some embodiments;

[0015] 9 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;

[0016] FIG10 is a perspective view of a filter element, a self-cleaning device, and a transmission assembly of an air conditioner according to some embodiments;

[0017] FIG11 is a partial enlarged view of the circle V in FIG10;

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

[0019] FIG13 is a perspective view of a filter element, a self-cleaning device, and another transmission assembly of an air conditioner according to some embodiments;

[0020] FIG14 is a partial enlarged view of the circle Z in FIG13;

[0021] 15 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;

[0022] 16 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;

[0023] 17 is a structural diagram of a stopper and a limiting portion of an air conditioner according to some embodiments when the cleaning assembly is in the second position;

[0024] 18 is a structural diagram of a stopper and a limiting portion of an air conditioner according to some embodiments when the cleaning assembly is in a first position;

[0025] 19 is a cross-sectional view of a filter element and a self-cleaning device in a cleaning assembly of an air conditioner according to some embodiments. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] “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.

[0031] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0032] 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.

[0033] 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).

[0034] 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.

[0035] Some embodiments of the present disclosure provide an air conditioner, which includes an indoor unit.

[0036] 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.

[0037] The air conditioner also includes an outdoor unit, and the indoor unit and the outdoor unit are connected by a pipeline to transmit refrigerant.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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 dust and other debris from entering the indoor unit. After the indoor unit has been running for a period of time, excessive dust and other debris may clog the filter, causing a decrease in air intake and lowering the cooling or heating efficiency of the air conditioner.

[0046] Typically, a first cleaning member (cleaning brush) is installed in the indoor unit to remove debris from the filter element, thereby improving the filter element's filtration capacity and maintaining the indoor unit's cooling or heating efficiency. In some solutions, the rigidity of the first cleaning member in the indoor unit is too low, making it unable to remove oil stains and other difficult-to-remove impurities from the filter element. In some solutions, the rigidity of the bristles of the first cleaning member in the indoor unit is too high, which can easily damage the filter element and reduce its service life.

[0047] In order to solve the above technical problems, some embodiments of the present disclosure provide an air conditioner 1000. The indoor unit 100 of the air conditioner 1000 cooperates with two first cleaning parts of different stiffness to remove impurities such as oil stains on the filter element that are difficult to clean, and is not likely to cause damage to the filter element, which is beneficial to extending the service life of the filter element.

[0048] In some embodiments, as shown in FIG1 , an air conditioner 1000 includes an indoor unit 100. The indoor unit 100 includes a housing 10. One side (eg, the upper side) of the housing 10 is open to form an air inlet 11.

[0049] In some embodiments, the other side (eg, the front side or the bottom side) of the housing 10 is open to form an air outlet.

[0050] In some embodiments, the indoor unit further includes an indoor heat exchanger, which is disposed in the housing 10 and configured to perform heat exchange with the air entering the housing 10 from the air inlet 11 .

[0051] 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 11 and is configured to rotate and drive the gas flow in the shell 10 so that air flows into the shell 10 from the air inlet 11, and the air after heat exchange with the indoor heat exchanger is discharged from the air outlet to the outside of the shell 10 (i.e., to the room).

[0052] It should be noted that the fan assembly can guide indoor air from the air inlet 11 to the indoor heat exchanger, increase the flow rate of air entering the indoor heat exchanger from the air inlet 11, and thus adjust the air volume entering the indoor heat exchanger.

[0053] In some embodiments, as shown in FIG2 , the indoor unit further includes at least one filter element 40 (filter screen). The filter element 40 is disposed between the air inlet 11 and the indoor heat exchanger and covers the air inlet 11. The filter element 40 is configured to filter air entering the housing 10 through the air inlet 11 to prevent foreign matter in the air from entering the indoor unit 100.

[0054] For example, when the indoor unit 100 is in operation, air entering the housing 10 through the air inlet 11 is first filtered by the filter element 40 before entering the indoor heat exchanger. This prevents debris 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.

[0055] 2 and 3 , the indoor unit further includes at least one self-cleaning device 50. The self-cleaning device 50 is detachably connected to the housing 10 and is configured to clean debris on the filter element 40, thereby improving the filtering efficiency of the filter element 40.

[0056] 2 and 3 , the self-cleaning device 50 includes a base 51 , which is connected to the housing 10 .

[0057] In some embodiments, the self-cleaning device 50 further includes a drive assembly 52. ​​The drive assembly 52 is rotatably connected to the base 51 and is connected to the filter element 40. The drive assembly 52 is configured to drive the filter element 40 to move so that the filter element 40 covers the air inlet 11 or is wrapped around the drive assembly 52.

[0058] 3 and 4 , the drive 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 11 or is wound around the outer circumference of the reel.

[0059] In some embodiments, the drive 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.

[0060] In some embodiments, the self-cleaning device 50 further includes a cleaning assembly 54 (cleaning brush assembly). The first reel 521, the second reel 522, and the cleaning assembly 54 are pivotally connected to the base 51. The cleaning assembly 54 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.

[0061] In some embodiments, a cleaning chamber 511 is defined in the base 51 , and at least a portion of the cleaning assembly 54 is disposed in the cleaning chamber 511 .

[0062] For example, at least a portion of one of the first reel 521 or the second reel 522 is located in the cleaning chamber 511, so that a portion of the filter element 40 is located in the cleaning chamber 511, so that the cleaning chamber 511 can block dust or impurities raised on this portion of the filter element 40.

[0063] In some embodiments, the top of the cleaning chamber 511 is open to form a first opening 551 . The first reel 521 is disposed at the first opening 551 .

[0064] In some embodiments, the bottom of the cleaning chamber 511 is open to form a second opening 552. As shown in Figures 2 and 4, 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 552 and is configured to collect debris dropped from the first cleaning member 542.

[0065] 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.

[0066] 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.

[0067] In some embodiments, as shown in FIG4 , the cleaning assembly 54 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.

[0068] In some embodiments, the cleaning assembly 54 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.

[0069] For example, the first cleaning member 542 is disposed in the cleaning chamber 511. 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 511, dust removed from the filter element 40 by the first cleaning member 542 will fall into the cleaning chamber 511, thereby preventing indoor air from being contaminated during the cleaning of the filter element 40.

[0070] In some embodiments, as shown in FIG5 , the indoor unit 100 further includes at least one motor 60. The at least one motor 60 includes a second motor connected to the third reel 543 and configured to rotate the third reel 543, thereby rotating the first cleaning element 542 to clean dust from the filter element 40. For example, the second motor is a stepping motor.

[0071] In some embodiments, the at least one motor 60 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.

[0072] In some embodiments, as shown in Figures 4 and 6, 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.

[0073] 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 .

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] In some embodiments, as shown in FIG6 , the cleaning assembly 54 further includes a stopper 544 (spring). The stopper 544 is disposed within the third reel 543 and extends radially along the third reel 543. For example, a first end of the stopper 544 is located within the third reel 543, and a second end of the stopper 544 extends radially outward of the third reel and abuts against the first sub-cleaning member 5421 and the second sub-cleaning member 5422. For example, the stopper 544 is elastic.

[0079] In this way, when the first sub-cleaning member 5421 or the second sub-cleaning member 5422 contacts the filter element 40, the 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.

[0080] 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.

[0081] For example, referring to FIG. 4 , 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 .

[0082] For example, referring to FIG. 6 , 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 .

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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 .

[0087] In some embodiments, as shown in FIG7 , the self-cleaning device 50 further includes at least one driven member 61 (driven gear). The driven member 61 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 61 can rotate synchronously with the reel.

[0088] In some embodiments, as shown in FIG8 , the self-cleaning device 50 further includes at least one mounting member 70 (mounting plate), with the at least one mounting member 70 corresponding to the at least one follower 61. The mounting member 70 is connected to the base 51 and is located on a side of the corresponding follower 61 away from the reel. The mounting member 70 is configured to cover at least a portion of the corresponding follower 61, thereby improving the appearance of the self-cleaning device 50. For example, the mounting member 70 is configured to cover the portion of the corresponding follower 61 that is exposed from the base 51.

[0089] In some embodiments, the at least one follower 61 includes two followers 61. The two followers 61 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 70 includes two mounting members 70. The two mounting members 70 are respectively disposed on the sides of the two followers 61 facing away from each other, thereby covering the two followers 61.

[0090] In some embodiments, as shown in FIG8 , the mounting member 70 includes a mounting member body 74. The mounting member 70 also includes a first clamping portion 71. The first clamping portion 71 is connected to the follower 61 and is located on a side of the mounting member body 74 away from the follower 61. The first clamping portion 71 protrudes in a direction away from the follower 61.

[0091] In this way, when a force is applied to the first clamping portion 71 to rotate the first clamping portion 71 , the first clamping portion 71 drives the driven member 61 to rotate, thereby driving the reel and the filter element 40 to rotate.

[0092] In some embodiments, as shown in FIG8 , the mounting member 70 includes a second clamping portion 72. The second clamping portion 72 is connected to the follower 61 and is located on a side of the mounting member body 74 away from the follower 61. A surface of the second clamping portion 72 away from the follower 61 is recessed toward the follower 61.

[0093] In this way, when a force is applied to the second clamping portion 72 to rotate the second clamping portion 72 , the second clamping portion 72 drives the driven member 61 to rotate, thereby driving the reel and the filter element 40 to rotate.

[0094] It is understood that when the user manually cleans the filter element, they need to control the rotation of the follower 61 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 61, the user only needs to rotate the first clamping portion 71 or the second clamping portion 72 of the mounting member 70 to rotate the follower 61 and the reel, loosening and unfolding the filter element 40, thereby facilitating the user's manual removal of the filter element 40.

[0095] In some embodiments, the first clamping portion 71 is disposed within the second clamping portion 72, and the first clamping portion 71 protrudes relative to the second clamping portion 72 in a direction away from the follower 61, thereby facilitating a user's grip on the first clamping portion 71. For example, a user can insert their fingers into the second clamping portion 72 and grip the first clamping portion 71 from opposite sides.

[0096] In some embodiments, as shown in FIG9 , the mounting member 70 includes a third clamping portion 73 (a protruding knob). The third clamping portion 73 is connected to the follower 61. The third clamping portion 73 is coaxially disposed with the follower 61 and is configured to rotate under the action of an external force, thereby driving the follower 61 to rotate.

[0097] For example, the third clamping portion 73 includes a circular base. For example, the third clamping portion 73 also includes a second protrusion, and the second protrusion is strip-shaped or square-shaped. For example, the third clamping portion 73 also includes a third protrusion, which is disposed on a side of the base 731 away from the follower 61 and extends along the circumference of the base, thereby increasing the strength of the outer peripheral edge of the third clamping portion 73. Moreover, when a 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 73.

[0098] 7 , the at least one follower 61 includes a first follower 611 . The first follower 611 is connected to the first reel 521 .

[0099] In some embodiments, the at least one follower 61 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 71 of the corresponding mounting member 70.

[0100] 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 71 and the second follower 612, when the user rotates the first clamping portion 71, 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 to move between the first reel 521 and the second reel 522. In this way, when the user rotates the first clamping portion 71, 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.

[0101] In some embodiments, the mounting member 70 further includes a mounting hole, the size of the mounting hole matches the size of the first clamping portion 71. The first clamping portion 71 is disposed in the mounting hole.

[0102] In some embodiments, the third clamping portion 73 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 73 rotates.

[0103] Below, for the convenience of description, as shown in Figure 1, the width direction (i.e., the front-to-back direction) of the indoor unit 100 is defined as the first direction A, the length direction (i.e., the left-to-right direction) of the indoor unit 100 is defined as the second direction B, and the height direction (i.e., the up-down direction) of the indoor unit 100 is defined as the third direction C.

[0104] In some embodiments, as shown in FIG. 10 , 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.

[0105] 10 and 11 , 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.

[0106] In some embodiments, as shown in Figure 11, the at least one follower 61 includes a second follower 612A and a second follower 612B. The second follower 612A and the second follower 612B are disposed at ends adjacent to each other of the two second reels 522. The second follower 612A and the second follower 612B are coaxially disposed opposite each other.

[0107] In some embodiments, as shown in FIG11 , the indoor unit 100 further includes at least one transmission assembly 80. The transmission assembly 80 is in transmission connection with the second follower 612A and the second follower 612B. When the motor 60 directly or indirectly drives the second follower 612A to rotate, the second follower 612A drives the transmission assembly 80 to rotate, and the transmission assembly 80 then drives the second follower 612B to rotate.

[0108] In this way, by providing a motor in the indoor unit 100, the synchronous rotation of the two second driven members 612 can be achieved, thereby reducing the manufacturing cost of the indoor unit 100 and reducing the length of the indoor unit 100 in the second reverse direction B.

[0109] In some embodiments, as shown in Figures 10 and 11, the 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.

[0110] In some embodiments, the 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.

[0111] 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.

[0112] In some embodiments, the 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.

[0113] 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.

[0114] Thus, when the motor 60 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 to drive 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.

[0115] In some embodiments, the motor 60 includes an output shaft. The motor 60 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 60 can drive the second reel 522 to rotate through the driving member and the second driven member 612C.

[0116] 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 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 transmission assembly 80, thereby enabling one (or more) motors 60 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 100 and reduce the length of the indoor unit 100 in the second direction B.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] In some embodiments, as shown in FIG12 , the connecting member 83 includes a first 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 second mating portion 811. The first mating portion 831 mates with the second mating portion 811 to position the first transmission member 81 in the circumferential direction of the connecting member 83.

[0123] For example, the first matching portion 831 is a limiting post, and the second 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.

[0124] In some embodiments, the connecting member 83 includes a third 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 fourth mating portion 821. The third mating portion 832 mates with the fourth mating portion 821 to limit the second transmission member 82 in the circumferential direction of the connecting member 83.

[0125] For example, the third matching portion 832 is a limiting post, and the fourth 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.

[0126] In some embodiments, the indoor unit 100 further includes a second housing (a first housing). The second housing is connected to the base 51 or the housing 10. 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 transmission assembly 80 and causing damage thereto.

[0127] 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 11 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 11 at the same time, or cannot move to the cleaning position, resulting in failure of self-cleaning.

[0128] In some embodiments, as shown in Figures 13 and 14, the 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.

[0129] For example, the clutch 84 is fixedly connected to the second transmission member 82 , and the connecting member 83 abuts against the clutch 84 .

[0130] 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.

[0131] 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.

[0132] 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 11 or move to the cleaning position, which helps to improve the reliability of self-cleaning.

[0133] In some embodiments, the clutch 84 is an electromagnetic clutch, so that at least one motor 60 can be omitted, which is beneficial to reducing the manufacturing cost of the indoor unit 100.

[0134] In some embodiments, as shown in FIG. 14 , 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 10 .

[0135] In some embodiments, the indoor unit 100 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 .

[0136] In some embodiments, as shown in FIG. 14 , 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 .

[0137] 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.

[0138] 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 .

[0139] 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 .

[0140] In some embodiments, the indoor unit 100 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.

[0141] 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 100 to stop the self-cleaning mode in response to the first signal.

[0142] 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 100 to start the self-cleaning mode in response to the second signal.

[0143] For example, the second preset amount is greater than or equal to the first preset amount.

[0144] 15 , the cleaning assembly 54 further includes at least one limiting portion 541 . The limiting portion 541 is disposed on the outer periphery of the third reel 543 and extends radially outward from the third reel 543 .

[0145] In some embodiments, the base 51 further includes a stopper 5111. The stopper 5111 is disposed on the inner wall of the cleaning chamber 511. The limiting portion 541 can abut against the stopper 5111 to limit the circumferential position of the third reel 543, thereby enabling the cleaning assembly 54 to reciprocate between the first position and the second position. For example, the stopper 5111 serves as a stopper.

[0146] For example, referring to FIG. 15 , when the cleaning assembly 54 moves from the first position to the second position, the limiting portion 541 abuts against one side of the stop portion 5111 to limit the rotation position of the third reel 543 , thereby limiting the position of the motor 60 .

[0147] Referring to Figure 16, when the cleaning component 54 rotates from the second position to the first position, the limiting portion 541 abuts against the other side of the stop portion 5111 to limit the rotation position of the third reel 543. In this way, the output shaft of the motor 60 is not affected by the rotational inertia, which is beneficial to extending the service life of the motor 60.

[0148] Moreover, when the third reel 543 rotates to the first 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.

[0149] It can be understood that the cooperation and stopping of the stop portion 5111 and the limiting portion 541 facilitates the limiting of the third reel 543 and the first cleaning member 542, so that the first cleaning member 542 can stop against the filter member 40 on the outer peripheral side of the second reel 522, which is beneficial to improving the efficiency and reliability of the first cleaning member 542 in cleaning the filter member 40.

[0150] In some embodiments, as shown in Figures 15 and 16, the at least one 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 54 is in the second position, the first sub-limiting portion 5411 abuts against the stop portion 5111; when the limiting portion 541 is in the first position, the second sub-limiting portion 5412 abuts against the stop portion 5111.

[0151] For example, the third reel 543 rotates clockwise to drive the limiting portion 541 to the second position. In this case, the first sub-limiting portion 5411 abuts against the stopper 5111, restricting the third reel 543 from continuing to rotate clockwise. The first cleaning member 542 does not contact the filter element 40, and the first sub-limiting portion 5411 is located below the second sub-limiting portion 5412. The first cleaning member 542 is also located below the central axis of the third reel 543.

[0152] For example, the third reel 543 rotates counterclockwise to drive the limiting portion 541 to the first position. In this case, the second sub-limiting portion 5412 abuts against the stopper 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.

[0153] It can be understood that the first sub-limiting portion 5411 and the second sub-limiting portion 5412 are respectively stopped by the stop portion 5111 at the second position and the first position, 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.

[0154] 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 stop portion 5111 at the second position and the first position, thereby improving the cleaning efficiency of the first cleaning member 542 on the filter element 40.

[0155] 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°.

[0156] For example, the angle α may be 0°, 30°, 60°, 90°, 120° or 180°.

[0157] 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 54 between the first position and the second position 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 54 between the first position and the second position can be increased, thereby facilitating contact or separation between the first cleaning member 542 and the filter element 40, thereby facilitating improved reliability of the cleaning assembly 54.

[0158] In some embodiments, as shown in Figures 17 and 18, the stopper 5111 includes a first sub-stopper 5112 (a first stop surface). When the stopper 541 is in the second position, the first sub-stopper 5411 abuts against the first sub-stopper 5112. For example, the stopper 5111 can be detachably connected to the front wall of the cleaning chamber 511. For example, the stopper 5111 can be a hollow structural member.

[0159] In some embodiments, the stopper 5111 further includes a second sub-stopper 5113 (a second stop surface). When the stopper 541 is in the first position, the second sub-stopper 5412 abuts against the second sub-stopper 5113. The first sub-stopper 5112 and the second sub-stopper 5113 are arranged along the third direction C. For example, the first sub-stopper 5112 is located below the second sub-stopper 5113. When the third reel 543 rotates clockwise, the first sub-stopper 5411 rotates to the first sub-stopper 5112, abutting against the first sub-stopper 5112.

[0160] 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-limiting portion 5411 and the second sub-limiting portion 5412 with the stop portion 5111, which is beneficial to improving the stability and reliability of the stopping between the limiting portion 541 and the stop portion 5111, and reducing the rotation error of the third scroll 543.

[0161] In some embodiments, when the indoor unit 100 turns on the self-cleaning mode, the first cleaning element 542 rotates to the first position to stop against 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.

[0162] When the indoor unit 100 exits the self-cleaning mode and turns on, the first cleaning member 542 rotates to the second position to disengage from the filter element 40 , and the first cleaning member 542 is located on a side of the third reel 543 away from the second reel 522 .

[0163] In some embodiments, as shown in FIG19 , 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 511 opposite the stopper 5111. The second cleaning member 512 is configured to clean debris from the first cleaning member 542 during movement of the stopper 541 between the second position and the first position. This helps improve the cleanliness of the first cleaning member 542, thereby enhancing the cleaning effectiveness of the cleaning assembly 54 on the filter element 40.

[0164] For example, along the first direction A, the stopper 5111 is disposed on the front wall of the cleaning chamber 511, and the second cleaning member 512 is disposed on the rear wall of the cleaning chamber 511. Along the third direction C, when the cleaning assembly 54 is in the first position, the first cleaning member 542 is located above the second cleaning member 512, and when the cleaning assembly 54 is in the second position, the first cleaning member 542 is located below the second cleaning member 512.

[0165] 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.

[0166] 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 stopper 541 is disposed at an axial end of the third reel 543. Thus, after the stopper 541 is assembled with the third reel 543, the first cleaning member 542 can rotate along with the third reel 543, and the stopper 541 can detach from the third reel 543 axially. The second cleaning member 512 is disposed on the sidewall of the cleaning chamber 511 axially along the third reel 543. This simplifies the assembly process of the indoor unit 100 and improves assembly efficiency.

[0167] In some embodiments, the cross-sectional shape of the stop portion 5111 is a right-angled trapezoid, a curved trapezoid, a polygon or a semicircle, thereby increasing the contact area between the limiting portion 541 and the stop portion 5111 and improving the stability of the stopping between the limiting portion 541 and the stop portion 5111.

[0168] In some embodiments, the at least one limiting portion 541 includes two 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 limiting portions 541 on any plane perpendicular to the axial direction of the third reel 543 coincide.

[0169] In some embodiments, the at least one stopping portion 5111 includes two stopping portions 5111 . Along the axial direction of the third reel 543 , the two stopping portions 5111 correspond to positions of the two limiting portions 541 .

[0170] It is understandable that the two limiting portions 541 are provided at the ends of the third reel 543 , which facilitates the installation and removal of the limiting portions 541 and helps to improve the stability of limiting the third reel 543 .

[0171] 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.

[0172] 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.

[0173] 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: An outdoor unit; And An indoor unit, connected to the outdoor unit, and comprising: A housing, the housing comprising an air inlet and an air outlet; An indoor heat exchanger, disposed within the housing and configured to exchange heat with the flowing air; A fan assembly, disposed on a side of the indoor heat exchanger away from the air inlet and configured to drive the indoor air to enter the housing from the air inlet and send the air after heat exchange with the indoor heat exchanger out from the air outlet; A filter element, configured to filter impurities in the air flowing through the filter element; and At least one self-cleaning device, configured to clean impurities on the filter element; any one of the at least one self-cleaning device comprises: A base, the base comprising a cleaning cavity; A driving assembly, connected to the filter element and configured to drive the filter element to move; A third reel, disposed within the cleaning cavity; and A first cleaning member, comprising a first sub-cleaning member and a second sub-cleaning member, the first sub-cleaning member and the second sub-cleaning member being spaced apart and disposed on an outer peripheral side of the third reel; 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 stiffness of the first sub-cleaning member is greater than or equal to the stiffness of the second sub-cleaning member.

2. The air conditioner according to claim 1, wherein, Along a 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.

3. The air conditioner according to claim 1 or 2, wherein, The self-cleaning device further comprises a resisting portion; a first end of the resisting portion is located within the third reel; a second end of the resisting portion extends towards a 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 resisting portion is in a compressed state.

4. The air conditioner according to any one of claims 1 to 3, wherein, The cleaning member comprises a plurality of sub-cleaning members; the plurality of sub-cleaning members are spaced apart and disposed on an 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 element.

5. The air conditioner according to any one of claims 1 to 4, wherein, The driving assembly comprises: A first reel, rotatably connected to the base and connected to a first end of the filter element; and A second reel, rotatably connected to the base and connected to a second end of the filter element; the second reel is disposed within the cleaning cavity.

6. The air conditioner according to any one of claims 1 to 5, wherein, The self-cleaning device further comprises: At least one driven member; the driven member is connected to an end of the reel and is coaxially disposed with the reel; and A mounting member, the mounting member is connected to the base and is located on a side of the driven member away from the reel; the mounting member satisfies at least one of the following: The mounting member includes a first clamping portion that connects to the driven member and is configured to drive the driven member to rotate when rotated, so as to drive the reel to rotate, and further drive the filter element to move; wherein, a surface of the first clamping portion away from the driven member protrudes in a direction away from the driven member. Or, The mounting member includes a second clamping portion that connects to the driven member and is configured to drive the driven member to rotate when rotated, so as to drive the reel to rotate, and further drive the filter element to move; wherein, the surface of the second clamping portion away from the driven member is recessed in a direction close to the driven member.

7. The air conditioner according to claim 6, wherein, The mounting member further includes a third clamping portion that is connected to the driven member and is coaxially arranged with the driven member; the third clamping portion is configured to drive the driven member to rotate.

8. The air conditioner according to claim 6 or 7, wherein, The drive assembly includes: A first reel, rotatably connected to the base and connected to the first end of the filter element; and A second reel, rotatably connected to the base and connected to the second end of the filter element; the second reel is disposed in the cleaning chamber; the second reel is closer to the bottom of the cleaning chamber than the first reel; The at least one driven member includes: A first driven member, connected to an end of the first reel; and A second driven member, connected to an end of the second reel and connected to the first clamping portion.

9. The air conditioner according to claim 8, wherein, The at least one self-cleaning device includes two self-cleaning devices arranged side by side along the second direction, and the two second reels in the two self-cleaning devices are coaxially arranged; The indoor unit further includes: A transmission assembly, drivingly connected to the two second reels; and At least one motor, including a first motor; the first motor is connected to any one of the two second reels and is configured to drive the any one second reel to rotate, so as to drive the transmission assembly to rotate and drive the other second reel among the two second reels to rotate.

10. The air conditioner according to claim 9, wherein, The transmission assembly includes: A first transmission member, drivingly connected to a second driven member provided at an end of the any one second reel; A second transmission member, drivingly connected to a second driven member provided at an end of the other second reel; and A connecting shaft, with the first transmission member and the second transmission member respectively connected to two ends of the connecting shaft.

11. The air conditioner according to claim 10, wherein, The first transmission member includes a first transmission gear that meshes with a second driven member provided at an end of the any one second reel; The second transmission member includes a second transmission gear that meshes with a second driven member provided at an end of the other second reel.

12. The air conditioner according to claim 10 or 11, wherein, The transmission assembly further includes a clutch; Axially along the connecting member, the clutch is disposed between the connecting member and the second transmission member and is coaxially arranged 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 switch to a second state to disconnect the connection between the connecting member and the second transmission member.

13. The air conditioner according to claim 12, wherein, The clutch is fixedly connected to the second transmission member, and the clutch abuts against 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.

14. The air conditioner according to any one of claims 10 to 13, wherein, At least a part of the connecting shaft is located between the two second reels.

15. The air conditioner according to any one of claims 10 to 14, wherein, The connecting portion, the first transmission member, and the second transmission member are coaxially arranged.

16. The air conditioner according to any one of claims 10 to 15, wherein, The air conditioner further includes a second accommodating portion, and the first transmission member, the second transmission member, and the connecting shaft are disposed in the second accommodating portion; The second accommodating portion satisfies one of the following: The second accommodating portion is connected to the housing; Or, The second accommodating portion is connected to the base.

17. The air conditioner according to any one of claims 10 to 16, wherein, The ratio of the pitch circle diameter of the second driven member to the pitch circle diameter of the first transmission member is any value between 1 and 3.

18. The air conditioner according to any one of claims 10 to 17, wherein, The ratio of the pitch circle diameter of the second driven member to the pitch circle diameter of the second transmission member is any value between 1 and 3.

19. The air conditioner according to any one of claims 10 to 18, wherein, The ratio of the pitch circle diameter of the second driven member to the pitch circle diameter of the first transmission member is equal to the ratio of the pitch circle diameter of the second driven member to the pitch circle diameter of the second transmission member.

20. The air conditioner according to any one of claims 9 to 19, wherein, The at least one motor further includes a second motor, and the second motor is connected to the third reel and is configured to drive the third reel to rotate.

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