Air conditioner and control method and control device thereof

Abstract

The invention discloses an air conditioner and a control method and device thereof, the air conditioner comprises an indoor unit, the indoor unit comprises a machine shell, a draught fan, an evaporator and a cleaning assembly, the machine shell is provided with an air inlet, an air outlet and an air duct located between the air inlet and the air outlet, the draught fan comprises a wind wheel, the wind wheel, the evaporator and the cleaning assembly are arranged in the machine shell and located on the air duct, and the cleaning assembly is arranged on the air duct. The evaporator is located between the wind wheel and the air outlet, the cleaning assembly comprises a cleaning part, the cleaning part can be located at the first position making contact with the to-be-cleaned face of the wind wheel and move relative to the to-be-cleaned face of the wind wheel, and the control method of the indoor unit comprises the steps that the air conditioner is controlled to operate in a refrigeration mode, so that the surface of the evaporator is frosted; when the cleaning piece is located at the first position, the cleaning piece is controlled to move relative to the to-be-cleaned face of the wind wheel; and the air conditioner is controlled to operate in a heating mode, so that flowing condensate water is formed on the surface of the evaporator. According to the technical scheme, dust removal of the wind wheel is more convenient, the cleaning effect is good, and air quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner and a control method and a control device thereof. Background Art

[0002] After the air conditioner has been used for a period of time, dust will generally accumulate on the surface of the impeller. The dust adsorbed on the impeller will affect its working efficiency, resulting in a decrease in the air volume of the entire machine, increased energy consumption, and polluting the air inside the air conditioner, reducing the quality of the air output. Therefore, regular cleaning is required. Disassembling and cleaning the impeller is time-consuming and labor-intensive, and may also damage the air conditioner components, which is very inconvenient. Summary of the Invention

[0003] The main purpose of the present invention is to provide an air conditioner and a control method and a control device thereof, which are intended to make dust removal of the fan wheel more convenient, improve the cleaning effect, and ensure air quality.

[0004] To achieve the above-mentioned object, the present invention provides a control method for an air conditioner, wherein the air conditioner includes an indoor unit, the indoor unit includes a casing, a fan, an evaporator, and a cleaning component, the casing having an air inlet, an air outlet, and an air duct located between the air inlet and the air outlet, the fan includes a fan wheel, the fan wheel, the evaporator, and the cleaning component are arranged in the casing, and the evaporator is located between the fan wheel and the air outlet on the air duct, the cleaning component includes a cleaning member, the cleaning member can be in a first position contacting a surface to be cleaned of the fan wheel and movable relative to the surface to be cleaned of the fan wheel, and the control method of the indoor unit includes:

[0005] Controlling the air conditioner to operate in a cooling mode so that frost forms on the surface of the evaporator;

[0006] When the cleaning member is in the first position, controlling the cleaning member to move relative to the surface to be cleaned of the wind wheel;

[0007] The air conditioner is controlled to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator.

[0008] Optionally, the fan further comprises a first motor for driving the wind wheel to rotate, and when the cleaning member is in the first position, the step of controlling the cleaning member to move relative to the surface to be cleaned of the wind wheel comprises:

[0009] When the cleaning member is in the first position, the first motor is controlled to drive the wind wheel to rotate.

[0010] Optionally, the cleaning member is movably arranged so as to be in a second position avoiding the wind wheel;

[0011] When the cleaning member is in the first position, the step of controlling the first motor to drive the wind wheel to rotate comprises: when the cleaning member is in the first position, controlling the first motor to drive the wind wheel to rotate at a first speed;

[0012] After the step of controlling the first motor to drive the fan wheel to rotate at a first speed when the cleaning member is in the first position, the air conditioner control method further comprises: controlling the first motor to drive the fan wheel to rotate at a second speed when the cleaning member is in the second position;

[0013] Wherein, the first rotational speed is less than the second rotational speed.

[0014] Optionally, the indoor unit includes a driving device for driving the cleaning member to move, and when the cleaning member is in the second position, before the step of controlling the first motor to drive the impeller to rotate at the second speed, the air conditioner control method further includes:

[0015] The driving device is controlled to drive the cleaning element to move from the first position to the second position.

[0016] Optionally, after the step of controlling the air conditioner to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator, the air conditioner control method further comprises the steps of:

[0017] The air conditioner is controlled to operate in a heating mode so that the surface of the evaporator is dried and reaches a preset temperature.

[0018] The present invention also provides an air conditioner control device, comprising a memory, a processor, and an air conditioner control program stored in the memory, wherein the processor executes the air conditioner control program to implement the steps of any one of the air conditioner control methods described above.

[0019] The present invention also provides an air conditioner, which includes an indoor unit, the indoor unit including a casing, a fan, an evaporator, and a cleaning component, the casing having an air inlet, an air outlet, and an air duct located between the air inlet and the air outlet, the fan including a wind wheel, the wind wheel, the evaporator, and the cleaning component are arranged in the casing, and on the air duct, the evaporator is located between the wind wheel and the air outlet, the cleaning component includes a cleaning member, the cleaning member can be in a first position in contact with the surface to be cleaned of the wind wheel and can move relative to the surface to be cleaned of the wind wheel, and the control device includes the control device as described above.

[0020] Optionally, the fan includes a centrifugal fan, which includes a volute for accommodating the wind wheel, the volute includes two oppositely arranged cover plates, and a surrounding plate connecting the two cover plates, the cleaning component is arranged adjacent to the air inlet, and corresponds to one of the cover plates of the volute, the cleaning member extends in a direction parallel to the axial direction of the wind wheel, the corresponding cover plate is provided with a through hole, and the cleaning member is movably arranged through the through hole to have a first position in contact with the surface to be cleaned of the wind wheel and a second position avoiding the wind wheel.

[0021] Optionally, the cleaning assembly further includes a cantilever arm, one end of which is movably mounted on the inner side of the casing, the side wall of the other end of the cantilever arm is connected to one end of the cleaning member, and the other end of the cleaning member extends into the volute from the through hole.

[0022] Optionally, the indoor unit includes a sliding connection structure, which includes a slide groove and a slider sliding on the slide groove, and the slide groove is provided at one end of the suspension arm and one of the inner side of the casing, and the slider is provided at the other end.

[0023] Optionally, the fan includes two volutes and two wind wheels respectively accommodated in the two volutes, two cleaning assemblies are correspondingly provided, the two cleaning assemblies are located between the two volutes, and the two opposite cover plates of the two volutes are respectively provided with two through holes, the air conditioner also includes a driving device, the driving device includes a gear, two racks, and a second motor for driving the gear to rotate, the two racks are located on opposite sides of the gear and are respectively engaged with the gear, and the two racks are respectively connected to the two cantilever arms of the two groups of cleaning assemblies.

[0024] Optionally, the air conditioner includes a ducted air conditioner.

[0025] In the technical solution of the present invention, the control method of the indoor unit includes: controlling the air conditioner to operate in a cooling mode so that frost forms on the surface of the evaporator; when the cleaning member is in a first position, controlling the cleaning member to move relative to the surface to be cleaned of the wind wheel; controlling the air conditioner to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator, that is, in the technical solution of the present application, when it is necessary to remove dust from the wind wheel, controlling the air conditioner to cool so that frost forms on the surface of the evaporator, and when the cleaning member is in the first position, controlling the cleaning member to move relative to the surface to be cleaned of the wind wheel so that the dust on the surface to be cleaned of the wind wheel falls off. On the air duct, the evaporator is located between the wind wheel and the air outlet, and the gaps between the fins of the evaporator have been covered with frost. Therefore, when the fallen dust reaches the evaporator, it cannot pass through the gaps between the fins and will be intercepted by the evaporator, reducing the discharge of dust from the air outlet during the operation of the cleaning part, controlling the heating of the air conditioner, and the frost layer on the surface of the evaporator melts to form flowing condensed water. The intercepted dust is discharged from the indoor unit along with the condensed water, completing the dust removal of the wind wheel. There is no need to disassemble and clean the wind wheel. During dust removal, the evaporator will not be polluted and dust is not easy to escape, making the wind wheel dust removal more convenient and the cleaning effect better, thereby ensuring air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 This is a schematic exploded view of the structure of an embodiment of the indoor unit provided by the present invention;

[0028] Figure 2 for Figure 1 A three-dimensional schematic diagram of the structure of the indoor unit;

[0029] Figure 3 for Figure 1 Schematic diagram of the structure of the indoor unit in the front view (cleaning parts working);

[0030] Figure 4 for Figure 3 AA cross-sectional view in FIG;

[0031] Figure 5 for Figure 1 Schematic diagram of the structure of the indoor unit in the front view (cleaning parts are not working);

[0032] Figure 6 for Figure 1 A schematic diagram of a first structural assembly of the cleaning component, the drive device and the mounting seat;

[0033] Figure 7 for Figure 1 A schematic diagram of a second structural assembly of the cleaning component, the drive device and the mounting seat;

[0034] Figure 8 for Figure 6 Schematic diagram of the structure explosion of the cleaning component, drive device and mounting base;

[0035] Figure 9 for Figure 6 A first structural perspective diagram and a second structural perspective diagram of the base;

[0036] Figure 10 for Figure 6 Schematic diagram of the structural explosion of the cleaning component;

[0037] Figure 11 A schematic flow chart of the steps of a first embodiment of a method for controlling an indoor unit provided by the present invention;

[0038] Figure 12 A schematic flow chart of the steps of a second embodiment of the indoor unit control method provided by the present invention;

[0039] Figure 13 A schematic flow chart of the steps of a third embodiment of a method for controlling an indoor unit provided by the present invention;

[0040] Figure 14 This is a schematic flow chart of the steps of the fourth embodiment of the indoor unit control method provided by the present invention.

[0041] Description of Figure Numbers:

[0042] Label name Label name 100 Indoor unit 51 gear 1 chassis 52 rack 11 air inlet 53 Second motor 12 air outlet 6 Mounting Block 13 Top cover 61 base 131 First fixing hole 611 chute 14 Chassis components 612 Second fixing hole 2 fan 613 First buckle 2a centrifugal fans 614 First via 21 wind wheel 615 First screw column 22 snail 616 Second screw column 221 cover 617 Positioning column 2211 through-hole 618 Second via 222 Hoarding 62 Cover 3 evaporator 621 Buckle slot 4 Cleaning components 622 The third via 41 Cleaning parts 623 Fourth via 411 The third fixing hole 624 Positioning tube 42 Cantilever arm 625 Gear shaft rotation groove 421 slider 7 water tray 422 Second buckle 71 Drain 5 Drive device

[0043] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] After the air conditioner has been used for a period of time, dust will generally accumulate on the surface of the impeller. The dust adsorbed on the impeller will affect its working efficiency, resulting in a decrease in the air volume of the entire machine, increased energy consumption, and polluting the air inside the air conditioner, reducing the quality of the air output. Therefore, regular cleaning is required. Disassembling and cleaning the impeller is time-consuming and labor-intensive, and may also damage the air conditioner components, which is very inconvenient.

[0048] In view of this, the present invention provides an air conditioner and a control method and a control device thereof, aiming to make dust removal of the fan wheel more convenient, improve the cleaning effect, and ensure air quality. Figures 1 to 10 This is an embodiment of the air conditioner provided by the present invention.

[0049] It should be noted that the present invention does not specifically limit the type of the air conditioner. The air conditioner includes a wall-mounted air conditioner, a cabinet air conditioner, a duct air conditioner, etc. The air conditioner is illustrated as a duct air conditioner in the accompanying drawings.

[0050] In an embodiment of the present invention, referring to the accompanying drawings, the air conditioner includes an indoor unit 100, the indoor unit 100 includes a housing 1, a fan 2, an evaporator 3, and a cleaning component 4, the housing 1 has an air inlet 11, an air outlet 12, and an air duct between the air inlet 11 and the air outlet 12, the fan 2 includes a wind wheel 21, the wind wheel 21, the evaporator 3, and the cleaning component 4 are arranged in the housing 1, and on the air duct, the evaporator 3 is located between the wind wheel 21 and the air outlet 12 (see FIG. 1 for details). Figure 4), the cleaning component 4 includes a cleaning member 41, and the cleaning member 41 can be in a first position in contact with the surface to be cleaned of the wind wheel 21 and move relative to the surface to be cleaned of the wind wheel 21. In this way, when the cleaning member 41 is in the first position, the cleaning member 41 is controlled to move relative to the surface to be cleaned of the wind wheel 21, so that the dust accumulated on the surface to be cleaned of the wind wheel 21 falls off, thereby realizing dust removal of the wind wheel 21, and there is no need to disassemble and clean the wind wheel 21, which is very convenient.

[0051] It should be noted that the present application does not impose any specific restrictions on the surface to be cleaned of the wind wheel 21. Any surface of the wind wheel 21 can be the surface to be cleaned. It can be understood that when the fan 2 is a centrifugal fan 2a, the peripheral side surface of the wind wheel 21 is prone to dust accumulation, and the surface to be cleaned of the wind wheel 21 includes the peripheral side surface of the wind wheel 21. When the fan 2 is an axial flow fan, the radial surface of the wind wheel 21 is prone to dust accumulation, and the surface to be cleaned of the wind wheel 21 includes the radial surface of the wind wheel 21. In this way, the surface of the wind wheel 21 that is prone to dust accumulation can be cleaned to ensure the overall cleaning effect of the wind wheel 21.

[0052] In one embodiment, the control device includes a memory, a processor, and an air conditioner control program stored in the memory, and the processor executes the air conditioner control program to implement the following steps of the air conditioner control method:

[0053] Controlling the air conditioner to operate in a cooling mode so that frost forms on the surface of the evaporator 3;

[0054] When the cleaning member 41 is in the first position, the cleaning member 41 is controlled to move relative to the surface to be cleaned of the wind wheel 21;

[0055] The air conditioner is controlled to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator 3 .

[0056] Optionally, the fan 2 further includes a first motor for driving the wind wheel 21 to rotate. When the cleaning member 41 is in the first position, the step of controlling the cleaning member 41 to move relative to the surface to be cleaned of the wind wheel 21 includes:

[0057] When the cleaning member 41 is at the first position, the first motor is controlled to drive the wind wheel 21 to rotate.

[0058] Optionally, the cleaning member 41 is movably arranged so that the cleaning member 41 can be in a second position avoiding the wind wheel 21;

[0059] When the cleaning member 41 is in the first position, the step of controlling the first motor to drive the wind wheel 21 to rotate includes: when the cleaning member 41 is in the first position, controlling the first motor to drive the wind wheel 21 to rotate at a first speed;

[0060] After the step of controlling the first motor to drive the wind wheel 21 to rotate at a first speed when the cleaning member 41 is in the first position, the air conditioner control method further includes: controlling the first motor to drive the wind wheel 21 to rotate at a second speed when the cleaning member 41 is in the second position;

[0061] Wherein, the first rotational speed is less than the second rotational speed.

[0062] Optionally, the indoor unit 100 includes a driving device 5 for driving the cleaning member 41 to move. When the cleaning member 41 is in the second position, before the step of controlling the first motor to drive the impeller 21 to rotate at the second speed, the air conditioner control method further includes:

[0063] The driving device 5 is controlled to drive the cleaning member 41 to move from the first position to the second position.

[0064] Optionally, after the step of controlling the air conditioner to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator 3, the air conditioner control method further comprises the steps of:

[0065] The air conditioner is controlled to operate in a heating mode so that the surface of the evaporator 3 is dry and reaches a preset temperature.

[0066] The present application does not limit the type of the fan 2. In one embodiment, the fan 2 includes a centrifugal fan 2a, which includes a volute 22 for accommodating the wind wheel 21. The volute 22 includes two oppositely arranged cover plates 221 and a surrounding plate 222 connecting the two cover plates 221. The cleaning component 4 is arranged adjacent to the air inlet 11 and corresponds to one of the cover plates 221 of the volute 22. The cleaning member 41 extends in a direction parallel to the axial direction of the wind wheel 21. The corresponding cover plate 221 is provided with a through hole 2211. The cleaning member 41 is movably arranged in the through hole 2211 to have a first position in contact with the surface to be cleaned of the wind wheel 21. and avoid the second position of the wind wheel 21. In this way, the cleaning component 4 is arranged near the air inlet 11, and the cleaning component 4 can be conveniently observed, disassembled and maintained from the air inlet 11. The cleaning member 41 is movably penetrated into the through hole 2211 and can seal the through hole 2211 without affecting the function of the volute 22. When the cleaning member 41 is in the first position, the cleaning member 41 contacts the surface to be cleaned of the wind wheel 21 to achieve dust removal. When the cleaning member 41 is in the second position, the wind wheel 21 is avoided to ensure the normal operation of the wind wheel 21, so that the setting of the cleaning component 4 does not affect the normal operation of the fan 2, and the cleaning component 4 is easy to disassemble and maintain.

[0067] The present application does not limit the specific implementation method of the cleaning member 41 movably passing through the through hole 2211. For example, the cleaning member 41 is connected to a telescopic rod, and the telescopic rod is extended and retracted to drive the cleaning member 41 to move. In one embodiment, the cleaning component 4 also includes a cantilever arm 42, one end of the cantilever arm 42 is movably installed on the inner side of the casing 1, and the side wall of the other end of the cantilever arm 42 is connected to one end of the cleaning member 41, and the other end of the cleaning member 41 extends from the through hole 2211 into the volute 22. In this way, the cleaning member 41 is driven to move horizontally through the movement of the cantilever arm 42, the structure is simple and reliable, and the production cost is reduced.

[0068] Specifically, the size of the cleaning member 41 in its extension direction is larger than the sum of the axial size of the wind wheel 21 and the distance between the wind wheel 21 and the cover plate 221, so that when the cleaning member 41 is in the first position, the cleaning member 41 can not only block the through hole 2211, but also correspond to the axial direction of the entire wind wheel 21, so that the cleaning member 41 can contact the entire circumferential side surface of the wind wheel 21 to ensure the dust removal effect.

[0069] In one embodiment, the indoor unit 100 includes a sliding connection structure, which includes a slide groove 611 and a slider 421 slidingly arranged in the slide groove 611. The slide groove 611 is provided at one end of the cantilever arm 42 and one of the inner sides of the casing 1, and the other one is provided with the slider 421. In this way, when the cantilever arm 42 moves, the movement of the cantilever arm 42 can be guided by the mutual cooperation of the slider 421 and the slide groove 611, so that the movement trajectory of the cantilever arm 42 is clear and the movement is more stable, thereby making the movement trajectory of the cleaning member 41 clear and the movement is more stable, ensuring the contact effect between the cleaning member 41 and the surface to be cleaned of the wind wheel 21, thereby ensuring the cleaning effect.

[0070] Specifically, the cleaning member 41 is configured to be elastically deformable. When the cleaning member 41 is in the first position, there is a certain amount of compression between the cleaning member 41 and the impeller 21. This ensures that when the cleaning member 41 moves relative to the surface to be cleaned of the impeller 21, the cleaning member 41 can always maintain contact with the impeller 21, thereby ensuring dust removal. This application does not limit the specific structure and material of the cleaning member 41. The cleaning member 41 can be any type of brush, such as a bristle brush, a nylon brush, etc., or a block such as a sponge or rubber.

[0071] In one embodiment, the fan 2 includes two volutes 22 and two wind wheels 21 respectively accommodated in the two volutes 22. Two cleaning components 4 are correspondingly provided. The two cleaning components 4 are located between the two volutes 22. The two opposite cover plates 221 of the two volutes 22 are respectively provided with two through holes 2211. The air conditioner also includes a driving device 5. The driving device 5 includes a gear 51, two racks 52, and a second motor 53 that drives the gear 51 to rotate. The two racks 52 are located on opposite sides of the gear 51 and are respectively engaged with the gear 51. The two racks 52 are respectively connected to the two cantilever arms 42 of the two groups of cleaning components 4. In this way, the movement of the two cleaning components 41 can be driven by a second motor 53, the structure is streamlined, and the production and use costs are reduced.

[0072] The main improvement of the present application lies in the setting of the cleaning component 4 and the control method of the air conditioner. The specific structure of the casing 1 is not limited. In a specific embodiment, the casing 1 includes a top cover 13 and a chassis component 14, which are manufactured separately and then assembled to form the casing 1, reducing the difficulty of production and manufacturing. In a specific embodiment, in order to facilitate the installation of the cleaning component 4 and the driving device 5, a first fixing hole 131 is provided on the top cover 13, and the indoor unit 100 also includes a mounting base 6, which includes a base 61 and a cover body 62 that are separately provided. The cover body 62 and the base 61 cover each other to form an installation space for the gear 51 and the rack 52, which can better protect the gear 51 and the rack 52 structure. The base 61 includes the slide groove 611, the second fixing hole 612, the first buckle 613, the first through hole 614, the first screw column 615, the second screw column 616, the positioning column 617 and the second through hole 618. The cover body 62 includes a buckle groove 621, a third through hole 622, a fourth through hole 623, a positioning cylinder 624, and a gear shaft rotation groove 625. When assembling, the second electric The machine 53 is fixed to the base 61 by the first screw column 615, the motor shaft of the second motor 53 passes through the first through hole 614 and the second through hole 618 to be connected with the gear shaft of the gear 51, the slider 421 is inserted into the slide groove 611, the gear 51 and the rack 52 are engaged, one end of the gear shaft of the gear 51 is connected with the motor shaft of the second motor 53, and the other end of the gear shaft of the gear 51 is inserted into the gear shaft rotation groove 625 to ensure the stability of the movement, the positioning column 617 is inserted into the positioning cylinder 624, the first clip 613 is buckled in the buckle groove 621, the screw locks the fourth through hole 623 and the second screw column 616 to assemble the base 61 and the cover body 62 together, and then the screw locks the third through hole 622, the second fixing hole 612 and the first fixing hole 131 to fix the cover body 62 and the base 61 on the top cover 13. In order to facilitate the disassembly, assembly and replacement of the cleaning member 41, a third fixing hole 411 is provided at one end of the cleaning member 41, and a second buckle 422 is provided at one end of the suspension arm 42 corresponding to the cleaning member 41, thereby realizing a detachable connection between the cleaning member 41 and the suspension arm 42. The cleaning member 41 can be disassembled and cleaned or replaced separately, which is beneficial to reducing the maintenance cost of the indoor unit 100.

[0073] The present invention also provides a control method for an air conditioner, the air conditioner including an indoor unit 100, the indoor unit 100 including a housing 1, a fan 2, an evaporator 3, and a cleaning assembly 4, the housing 1 having an air inlet 11, an air outlet 12, and an air duct between the air inlet 11 and the air outlet 12, the fan 2 including a wind wheel 21, the wind wheel 21, the evaporator 3, and the cleaning assembly 4 being arranged in the housing 1, and on the air duct, the evaporator 3 is located between the wind wheel 21 and the air outlet 12, the cleaning assembly 4 including a cleaning member 41, the cleaning member 41 being able to be in a first position in contact with a surface to be cleaned of the wind wheel 21 and being movable relative to the surface to be cleaned of the wind wheel 21, the control method of the indoor unit 100 comprising:

[0074] S10: Controlling the air conditioner to operate in a cooling mode so that frost forms on the surface of the evaporator 3;

[0075] S20: When the cleaning member 41 is in the first position, controlling the cleaning member 41 to move relative to the surface to be cleaned of the wind wheel 21;

[0076] S40: Control the air conditioner to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator 3 .

[0077] In the technical solution of the present invention, the control method of the indoor unit 100 includes: controlling the air conditioner to operate in a cooling mode so that frost forms on the surface of the evaporator 3; when the cleaning member 41 is in the first position, controlling the cleaning member 41 to move relative to the surface to be cleaned of the wind wheel 21; controlling the air conditioner to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator 3, that is, in the technical solution of the present application, when it is necessary to remove dust from the wind wheel 21, controlling the air conditioner to cool so that frost forms on the surface of the evaporator 3, and when the cleaning member 41 is in the first position, controlling the cleaning member 41 to move relative to the surface to be cleaned of the wind wheel 21 so that the dust on the surface to be cleaned of the wind wheel 21 falls off. On the air duct, the evaporator 3 is located between the wind wheel 21 and the air outlet 12, and the gaps between the fins of the evaporator 3 have been covered with frost. Therefore, when the dust falls off and reaches the evaporator 3, it cannot pass through the gaps between the fins and will be intercepted by the evaporator 3, reducing the discharge of dust from the air outlet 12 during the operation of the cleaning part 41, controlling the heating of the air conditioner, and the frost layer on the surface of the evaporator 3 melts to form flowing condensed water. The intercepted dust is discharged from the indoor unit 100 along with the condensed water, completing the dust removal of the wind wheel 21. There is no need to disassemble and clean the wind wheel 21. During dust removal, the evaporator 3 will not be polluted, and dust is not easy to escape, making dust removal by the wind wheel 21 more convenient and having a good cleaning effect, thereby ensuring air quality.

[0078] The present application does not limit how the condensed water from the surface of the evaporator 3 is discharged from the indoor unit 100. In a specific embodiment, a water receiving tray 7 is provided under the evaporator 3, and the water receiving tray 7 is provided with a drain outlet 71. The condensed water on the surface of the evaporator 3 flows into the water receiving tray 7 with dust and is finally discharged from the drain outlet 71.

[0079] The present application does not limit the specific implementation method of the movement of the cleaning member 41 relative to the surface to be cleaned of the wind wheel 21. The wind wheel 21 may be stationary while the cleaning member 41 moves. In one embodiment, the fan 2 further includes a first motor that drives the wind wheel 21 to rotate. When the cleaning member 41 is in the first position, the steps of controlling the movement of the cleaning member 41 relative to the surface to be cleaned of the wind wheel 21 include:

[0080] S21: When the cleaning member 41 is at the first position, controlling the first motor to drive the wind wheel 21 to rotate.

[0081] In this embodiment, when the cleaning member 41 is in the first position, that is, when the cleaning member 41 is in contact with the surface to be cleaned of the wind wheel 21, the first motor is controlled to drive the wind wheel 21 to rotate. As the wind wheel 21 rotates, it moves relative to the cleaning member 41, so that the dust accumulated on the surface to be cleaned of the wind wheel 21 falls off, and the dust removal of the wind wheel 21 is achieved. By means of the rotation of the wind wheel 21 itself to achieve the movement of the cleaning member 41 relative to the surface to be cleaned of the wind wheel 21, the structure can be avoided from being too complicated, the production cost can be reduced, and the control is more convenient and reliable.

[0082] In one embodiment, the cleaning member 41 is movably arranged so that the cleaning member 41 can be in a second position avoiding the wind wheel 21;

[0083] When the cleaning member 41 is in the first position, the step S21 of controlling the first motor to drive the wind wheel 21 to rotate includes:

[0084] S211: When the cleaning member 41 is in the first position, controlling the first motor to drive the wind wheel 21 to rotate at a first speed;

[0085] After step S211 of controlling the first motor to drive the wind wheel 21 to rotate at a first speed when the cleaning member 41 is in the first position, the air conditioner control method further includes:

[0086] S30: When the cleaning member 41 is in the second position, controlling the first motor to drive the wind wheel 21 to rotate at a second speed;

[0087] Wherein, the first rotational speed is less than the second rotational speed.

[0088] In this embodiment, the first rotational speed is lower than the second rotational speed, that is, when the cleaning member 41 is in the first position, the first motor is controlled to drive the wind wheel 21 to rotate at a lower rotational speed. At this time, the cleaning member 41 moves relative to the surface to be cleaned of the wind wheel 21, and the wind wheel 21 rotates at a lower rotational speed, which can reduce the risk of wear between the wind wheel 21 and the cleaning member 41 while allowing the dust on the surface to be cleaned to fall off. When the cleaning member 41 is in the second position, the first motor is controlled to drive the wind wheel 21 to rotate at a higher rotational speed, forming a high-speed airflow to blow the fallen dust to the evaporator 3, thereby ensuring the cleaning effect.

[0089] Specifically, the first speed is 8rpm-14rpm (including 8rpm and 14rpm), and the wind wheel 21 rotates relatively slowly to reduce the risk of wear between the wind wheel 21 and the cleaning element 41. The wind wheel 21 is controlled to rotate at the first speed for a first preset time according to the first speed. The first preset time is, for example, 1 minute, so that the wind wheel 21 can rotate 8-14 circles, a sufficient number of circles to ensure that the cleaning element 41 brushes the surface to be cleaned of the wind wheel 21 several times, thereby ensuring the cleaning effect. Taking the fan 2 as a centrifugal fan 2a, and the surface to be cleaned of the wind wheel 21 as the circumferential side surface of the wind wheel 21 as an example, the wind wheel 21 rotates, and the cleaning member 41 moves relative to the circumferential side surface of the wind wheel 21. The wind wheel 21 rotates one circle, and the cleaning member 41 completes one brushing of the circumferential side surface of the wind wheel 21. Similarly, when the fan 2 is an axial flow fan 2, and the surface to be cleaned of the wind wheel 21 is a radial surface, the wind wheel 21 rotates, and the cleaning member 41 moves relative to the radial surface of the wind wheel 21. The wind wheel 21 rotates one circle, and the cleaning member 41 completes one brushing of the radial surface of the wind wheel 21.

[0090] The switching of the cleaning member 41 between the first position and the second position can be completed by manual driving. In one embodiment, the indoor unit 100 includes a driving device 5 for driving the cleaning member 41. When the cleaning member 41 is in the second position, before the step of controlling the first motor to drive the impeller 21 to rotate at the second speed, the air conditioner control method further includes:

[0091] The driving device 5 is controlled to drive the cleaning member 41 to move from the first position to the second position.

[0092] In this embodiment, without manual operation, the driving device 5 is controlled to drive the cleaning member 41 to move from the first position to the second position, thereby realizing the automation of the position switching of the cleaning member 41 and improving the dust removal efficiency.

[0093] In one embodiment, after step S40 of controlling the air conditioner to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator 3, the air conditioner control method further includes the following steps:

[0094] S50: Control the air conditioner to operate in a heating mode so that the surface of the evaporator 3 is dry and reaches a preset temperature.

[0095] In this embodiment, the air conditioner is controlled to operate in heating mode so that the surface of the evaporator 3 is dried and reaches a preset temperature, which can form a high-temperature environment on the surface of the evaporator 3 and achieve the purpose of inactivating microorganisms such as bacteria and fungi on the surface of the heat exchanger, thereby realizing overall automatic cleaning of the indoor unit 100.

[0096] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner includes an indoor unit, the indoor unit including a casing, a fan, an evaporator, and a cleaning assembly, the casing having an air inlet, an air outlet, and an air duct located between the air inlet and the air outlet, the fan including a fan wheel, the fan wheel, the evaporator, and the cleaning assembly being arranged in the casing, and on the air duct, the evaporator being located between the fan wheel and the air outlet, the cleaning assembly including a cleaning member, the cleaning member being able to be in a first position in contact with a surface to be cleaned of the fan wheel and being movable relative to the surface to be cleaned of the fan wheel, and the control method of the indoor unit comprising: Controlling the air conditioner to operate in a cooling mode so that frost forms on the surface of the evaporator; When the cleaning member is in the first position, controlling the cleaning member to move relative to the surface to be cleaned of the wind wheel; The air conditioner is controlled to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator.

2. The air conditioner control method according to claim 1, wherein: The fan further includes a first motor driving the wind wheel to rotate. When the cleaning member is in the first position, the step of controlling the cleaning member to move relative to the surface to be cleaned of the wind wheel includes: When the cleaning member is in the first position, the first motor is controlled to drive the wind wheel to rotate.

3. The air conditioner control method according to claim 2, wherein: The cleaning member is movably arranged so as to be in a second position avoiding the wind wheel; When the cleaning member is in the first position, the step of controlling the first motor to drive the wind wheel to rotate comprises: when the cleaning member is in the first position, controlling the first motor to drive the wind wheel to rotate at a first speed; After the step of controlling the first motor to drive the fan wheel to rotate at a first speed when the cleaning member is in the first position, the air conditioner control method further comprises: controlling the first motor to drive the fan wheel to rotate at a second speed when the cleaning member is in the second position; Wherein, the first rotational speed is less than the second rotational speed.

4. The air conditioner control method according to claim 3, wherein: The indoor unit includes a driving device for driving the cleaning member to move. When the cleaning member is in the second position, before the step of controlling the first motor to drive the impeller to rotate at a second speed, the air conditioner control method further includes: The driving device is controlled to drive the cleaning element to move from the first position to the second position.

5. The air conditioner control method according to claim 1, wherein: After the step of controlling the air conditioner to operate in a heating mode so that flowing condensed water forms on the surface of the evaporator, the air conditioner control method further comprises the steps of: The air conditioner is controlled to operate in a heating mode so that the surface of the evaporator is dried and reaches a preset temperature.

6. A control device for an air conditioner, characterized in that: The method comprises a memory, a processor and an air conditioner control program stored in the memory, wherein the processor executes the air conditioner control program to implement the steps of the air conditioner control method according to any one of claims 1 to 5.

7. An air conditioner, characterized in that: The air conditioner includes an indoor unit, which includes a casing, a fan, an evaporator, and a cleaning component. The casing has an air inlet, an air outlet, and an air duct located between the air inlet and the air outlet. The fan includes a wind wheel. The wind wheel, the evaporator, and the cleaning component are arranged in the casing and on the air duct. The evaporator is located between the wind wheel and the air outlet. The cleaning component includes a cleaning member, which can be in a first position in contact with the surface to be cleaned of the wind wheel and move relative to the surface to be cleaned of the wind wheel. The control device includes the control device as claimed in claim 6.

8. The air conditioner according to claim 7, wherein: The fan includes a centrifugal fan, which includes a volute for accommodating the wind wheel, the volute includes two oppositely arranged cover plates and a surrounding plate connecting the two cover plates, the cleaning component is arranged adjacent to the air inlet and corresponds to one of the cover plates of the volute, the cleaning member extends in a direction parallel to the axial direction of the wind wheel, the corresponding cover plate is provided with a through hole, the cleaning member is movably arranged through the through hole to have a first position in contact with the surface to be cleaned of the wind wheel and a second position avoiding the wind wheel.

9. The air conditioner according to claim 8, wherein The cleaning assembly also includes a cantilever arm, one end of which is movably mounted on the inner side of the casing, the side wall of the other end of the cantilever arm is connected to one end of the cleaning member, and the other end of the cleaning member extends into the volute from the through hole.

10. The air conditioner according to claim 9, wherein The indoor unit includes a sliding connection structure, which includes a slide groove and a slider slidingly arranged in the slide groove. The slide groove is provided at one end of the suspension arm and the inner side of the casing, and the slider is provided at the other end.

11. The air conditioner according to claim 9, wherein The fan includes two volutes and two wind wheels respectively accommodated in the two volutes. Two cleaning components are correspondingly provided. The two cleaning components are located between the two volutes. The two opposite cover plates of the two volutes are respectively provided with two through holes. The air conditioner also includes a driving device, which includes a gear, two racks, and a second motor that drives the gear to rotate. The two racks are located on opposite sides of the gear and are respectively engaged with the gear. The two racks are respectively connected to the two cantilever arms of the two groups of cleaning components.

12. The air conditioner according to any one of claims 7 to 11, characterized in that: The air conditioner includes a duct unit.

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