Air conditioner and its control method

Abstract

The present invention provides an air conditioner and a control method thereof. The air conditioner includes an indoor unit, and the indoor unit includes an air duct framework having an air outlet duct, a protection net that can move between a shielding position for shielding the air outlet duct and an exposing position for exposing the air outlet duct, and a brush disposed on the movement path of the protection net. The control method includes: obtaining a trigger signal for dust removal of the protection net; identifying the operating state of the air conditioner, where the operating state includes an operating state in a cooling mode or a heating mode; when it is identified that the air conditioner is in an operating state, determining whether the air humidity in the air outlet duct is higher than a preset humidity threshold; and when the air humidity in the air outlet duct is higher than the preset humidity threshold, driving the protection net to reciprocate to use the brush to remove dust from the protection net. The control method of the air conditioner of the present invention can not only avoid dust flying when self-cleaning the protection net, but also avoid the situation where dust is electrostatically adsorbed on both of them and cannot be cleaned up.

Description

Technical Field

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

[0002] In the prior art, a protection net for preventing foreign objects from entering the indoor unit is provided inside the air outlet of the indoor unit. Generally, the protection net is fixed inside the casing when assembling the indoor unit. However, with continuous ventilation, a large amount of dust will accumulate inside the indoor unit. Due to the obstruction of the protection net and the difficulty of disassembly, users cannot clean the dust by themselves, resulting in a poor experience. Summary of the Invention

[0003] An object of the present invention is to overcome at least one defect in the prior art, and provide a control method for an air conditioner that can automatically clean the protection net.

[0004] A further object of the present invention is to avoid dust flying, eliminate static electricity caused by friction between the brush head of the brush and the protection net, and prevent dust from being adsorbed by static electricity on both of them and being unable to be cleaned, thereby improving the dust removal effect.

[0005] Another further object of the present invention is to utilize the water vapor generated by the humidifying device to increase the air humidity in the air outlet duct, create the dust removal conditions for the protection net, and enable the dust removal to be implemented as soon as possible.

[0006] Specifically, the present invention provides a control method for an air conditioner. The air conditioner includes an indoor unit, and the indoor unit includes an air duct framework having an air outlet duct, a protection net that can move between a shielding position for shielding the air outlet duct and an exposing position for exposing the air outlet duct, and a brush disposed on the movement path of the protection net. The control method includes: obtaining a trigger signal for cleaning the protection net; identifying the operating state of the air conditioner, where the operating state includes an operating state in a cooling mode or a heating mode; when it is identified that the air conditioner is in an operating state, determining whether the air humidity in the air outlet duct is higher than a preset humidity threshold; when the air humidity in the air outlet duct is higher than the preset humidity threshold, driving the protection net to reciprocate to clean the protection net with the brush.

[0007] Optionally, the air conditioner includes a humidifying device for increasing the air humidity in the air outlet duct; and the control method further includes: when the air humidity in the air outlet duct is lower than the preset humidity threshold, starting the humidifying device to increase the air humidity in the air outlet duct until the air humidity in the air outlet duct is higher than the preset humidity threshold.

[0008] Optionally, the air conditioner includes a wind deflector for opening and closing the air outlet duct, and the wind deflector is closer to the air outlet of the air outlet duct than the protective net; the control method further includes: when the air humidity in the air outlet duct is higher than a preset humidity threshold, controlling the wind deflector to move to a closed position to close the air outlet duct.

[0009] Optionally, the air conditioner is configured to: prohibit the wind deflector from opening during the reciprocating movement of the protective net.

[0010] Optionally, the steps after driving the protective net to reciprocate further include: obtaining the duration of the reciprocating movement of the protective net; when the duration reaches a preset duration, driving the protective net to move from the current position to the shielding position and allowing the wind deflector to open.

[0011] Optionally, the air conditioner includes an air quality detection device disposed in the air outlet duct; and the trigger signal includes: an air pollution overlimit signal reported by the air quality detection device, a timed start signal, and a start signal from the user.

[0012] Optionally, the working state further includes a standby state; and the control method further includes: when it is recognized that the air conditioner is in the standby state, driving the protective net to reciprocate to dust the protective net with the brush.

[0013] In particular, the present invention further provides an air conditioner, including: an indoor unit, which includes an air duct framework, a protective net, and a brush; the air duct framework has an air outlet duct; the protective net is disposed in the air outlet duct to prevent foreign objects from entering the air outlet duct, and the protective net has a shielding position that shields the air outlet duct and an exposed position that exposes the air outlet duct; the brush is disposed on the air duct framework and is located on the movement path of the protective net to dust the protective net; a controller, configured to obtain a trigger signal for dusting the protective net, identify the working state of the air conditioner, and when it is recognized that the air conditioner is in the operating state, determine whether the air humidity in the air outlet duct is higher than a preset humidity threshold, and when the air humidity in the air outlet duct is higher than the preset humidity threshold, drive the protective net to reciprocate to dust the protective net with the brush.

[0014] Optionally, the indoor unit further includes a driving mechanism for promoting the movement of the protective net, and the driving mechanism includes a motor, a gear and a rack that mesh with each other. The motor is installed on the air duct framework, the gear is installed on the motor, and the rack is formed on the protective net.

[0015] Optionally, the side wall of the air duct framework has a moving channel that allows the protective net to pass through; and the brush may further include a fixing part and a brush head part. The fixing part is fixed to the outside of the side wall of the air duct framework and makes the brush head part face the moving channel. When the protective net passes through the moving channel, the brush head part can be used to clean the dust on the protective net.

[0016] The control method of the air conditioner in this embodiment needs to determine whether the air humidity in the air outlet duct meets the dust removal condition before starting the dust removal of the protection net. When the dust removal condition is met, the protection net is driven to reciprocate, and the brush head of the brush is used to remove dust. This can not only automatically remove dust from the protection net, but also avoid dust flying, eliminate static electricity caused by friction between the brush head of the brush and the protection net, and prevent dust from being adsorbed by static electricity on both of them and being unable to be cleaned, thus improving the dust removal effect.

[0017] The control method of the air conditioner in this embodiment, when obtaining a trigger signal for dust removal of the protection net and the air humidity in the air outlet duct does not meet the dust removal condition, cleverly uses the water vapor generated by the humidifying device to increase the air humidity in the air outlet duct, creating a dust removal condition for the protection net, so that the dust removal can be carried out as soon as possible.

[0018] Through the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more clear about the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0020] Figure 1 is a heat exchange principle block diagram of an air conditioner according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of an air duct framework in an air conditioner according to an embodiment of the present invention;

[0022] Figure 3 is a cross-sectional view of an air duct framework in an air conditioner according to an embodiment of the present invention;

[0023] Figure 4 is a control principle block diagram of an air conditioner according to an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of a control method in an air conditioner according to an embodiment of the present invention;

[0025] Figure 6 is a schematic diagram of a control method in an air conditioner according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In the description of this embodiment, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "depth", etc. are based on the orientation in the normal use state as a reference, and can be determined with reference to the orientation or positional relationship shown in the drawings. For example, the "front" indicating the orientation refers to the side facing the user. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0027] See Figure 1 , Figure 1 FIG. is a heat exchange principle block diagram of an air conditioner 1 according to an embodiment of the present invention. The present invention first provides an air conditioner 1, which generally may include an indoor unit 100 installed indoors and an outdoor unit 200 installed outdoors. Among them, the form of the indoor unit 100 can be various, such as a wall-mounted indoor unit 100, a floor-standing indoor unit 100, etc.

[0028] The air conditioner 1 can use a circulating refrigeration system to achieve refrigeration or heating. The circulating refrigeration system uses the compression phase change cycle of the refrigerant in the compressor 210, the outdoor unit heat exchanger 220, the indoor unit heat exchanger 110, and the throttling device 230 to achieve heat transfer. In the air conditioner 1, a reversing valve can also be provided in the refrigeration system to change the flow direction of the refrigerant, so that the indoor unit heat exchanger 110 alternately serves as an evaporator or a condenser to achieve the refrigeration or heating function. Since the circulating refrigeration system in the air conditioner 1 is well known to those skilled in the art, its working principle and structure will not be described in detail here.

[0029] See Figure 2 , Figure 2 FIG. is a schematic diagram of the air duct framework 130 of the air conditioner 1 according to an embodiment of the present invention. The indoor unit 100 may further include a housing (not shown in the figure), an air duct framework 130, and a cross-flow fan 120. The housing has a heat exchange air inlet and a heat exchange air outlet. The air duct framework 130 can be arranged inside the housing, and the air duct framework 130 defines an air outlet duct 132, and the air outlet of the air outlet duct 132 is opposite to the heat exchange air outlet. The cross-flow fan 120 can be arranged on the air inlet side of the air duct framework 130 to promote the air in the indoor environment to enter the housing from the heat exchange air inlet, exchange heat with the indoor unit heat exchanger 110, and be discharged into the air outlet duct 132, and then be discharged back into the indoor environment from the heat exchange air outlet to achieve the adjustment of the indoor temperature.

[0030] See Figure 2, the indoor unit 100 may further include a protective net 140. The protective net 140 may be a mesh structure, which may be disposed in the air outlet duct 132 of the air duct framework 130 to prevent foreign objects from entering the air outlet duct 132. For example, in the vertical indoor unit 100, since the air outlet duct 132 is relatively large, the protective net 140 can prevent a user's hand from reaching into the air outlet duct 132 to avoid danger.

[0031] Further, the protective net 140 may be configured to move controllably between a shielding position that shields the air outlet duct 132 and an exposing position that exposes the air outlet duct 132, so that the user can open the air outlet duct 132 to clean the air outlet duct 132.

[0032] See Figure 2 , specifically, the indoor unit 100 may further include a driving mechanism for promoting the movement of the protective net 140. The driving mechanism includes a motor 150, meshing gears 152 and a rack 154. The motor 150 is installed on the air duct framework 130, the gear 152 is installed on the motor 150, and the rack 154 is formed on the protective net 140.

[0033] Since the protective net 140 can be set according to the shape of the air outlet duct 132, for example, set to an arc shape, the rack 154 formed on the protective net 140 can also be set to an arc shape. At this time, the movement path of the protective net 140 is an arc. Of course, the protective net 140 can also be set to other shapes (such as a flat shape), and the movement path of the protective net 140 is a straight line, which can be determined according to specific circumstances.

[0034] See Figure 3 , Figure 3 is a cross-sectional view of the air duct framework 130 in the air conditioner 1 according to an embodiment of the present invention. In some embodiments, the indoor unit 100 may further include a brush 170 disposed on the movement path of the protective net 140. Specifically, the air duct framework 130 is provided with a movement channel 134 on one side wall to allow the protective net 140 to pass through. The brush 170 may further include a fixing portion 172 and a brush head portion 174. The fixing portion 172 of the brush 170 is fixed to the side wall of the air duct framework 130 so that the brush head portion 174 faces the movement channel 134. In this way, when the protective net 140 passes through the movement channel 134, the brush head portion 174 of the brush 170 can clean the dust on the protective net 140 to achieve dust removal of the protective net 140.

[0035] See Figure 3, in some embodiments, the indoor unit 100 may further include a plurality of swing blades 180 arranged at intervals along the length direction of the air duct frame 130. The plurality of swing blades 180 are disposed in the air outlet duct 132 and are used to adjust the air outlet angle of the air outlet airflow along the length of the air duct frame 130 by swinging. For example, for a vertical indoor unit, the air duct frame 130 is arranged along the height direction, and the plurality of swing blades 180 are arranged along the height direction in the air outlet duct 132 to adjust the air outlet angle of the air outlet airflow up and down. For a wall-mounted indoor unit, the air duct frame 130 is arranged horizontally, and the plurality of swing blades 180 are arranged horizontally in the air outlet duct 132 to adjust the air outlet angle of the air outlet airflow horizontally.

[0036] In some embodiments, the indoor unit 100 may further include a humidifying device 190 for increasing the air humidity in the air outlet duct 132. The humidifying device 190 may be disposed in the air outlet duct 132 to release atomized water vapor into the air outlet duct 132 to increase the humidity of the indoor environment.

[0037] In addition, the humidifying device 190 can also increase the air humidity in the air outlet duct 132 during the process of removing dust from the protection net 140 by the brush 170. This can not only prevent dust from flying during dust removal, but also eliminate static electricity generated by the friction between the brush head 174 and the protection net 140, thereby avoiding the situation where dust is electrostatically adsorbed on both of them and cannot be cleaned.

[0038] See Figure 3 , in some embodiments, the indoor unit 100 may further include a wind deflector 182 for opening and closing the air outlet duct 132. The wind deflector 182 may be disposed at the air outlet of the air outlet duct 132. In this way, relative to the protection net 140, it is closer to the air outlet of the air outlet duct 132. It can not only open and close the air outlet duct 132, but also cover the protection net 140 to prevent users or other objects from approaching the protection net 140 during the dust removal process and avoid danger.

[0039] In addition, the wind deflector 182 can also move to the closed position of closing the air outlet duct 132 during the process of removing dust from the protection net 140. This can ensure that a small amount of dust generated during dust removal does not enter the room through the air outlet duct 132, and can also prevent users from putting hands or other sundries into the air outlet duct 132 during the reciprocating movement of the protection net 140, causing danger.

[0040] See Figure 4 , Figure 4 is a control principle block diagram of the air conditioner 1 according to an embodiment of the present invention. The air conditioner 1 may further include a controller 300. The controller 300 may include a processor 310 and a memory 320. The memory 320 has a machine-executable program 322. When the processor 310 executes the machine-executable program 322, a control method of the air conditioner 1 can be implemented.

[0041] See Figure 5 , Figure 5 which is a schematic diagram of a control method in the air conditioner 1 according to an embodiment of the present invention. The control method may include the following steps:

[0042] Step S410: Obtain a trigger signal for dust removal of the protection net 140.

[0043] Step S420: Identify the operating state of the air conditioner 1, where the operating state includes an operating state in the cooling mode or the heating mode.

[0044] Step S430: When it is identified that the air conditioner 1 is in the operating state, determine whether the air humidity in the air outlet air duct 132 is higher than a preset humidity threshold.

[0045] Step S440: When the air humidity in the air outlet air duct 132 is higher than the preset humidity threshold, drive the protection net 140 to reciprocate, so as to use the brush 170 to remove dust from the protection net 140.

[0046] In step S410, the trigger signal can be various. When any one of the various trigger signals is obtained, the dust removal program can be started. In some embodiments, the trigger signal may include an air pollution overlimit signal reported by the air quality detection device 160, a timed start signal, and a start signal from the user.

[0047] For the air pollution overlimit signal, an air quality detection device 160 (as shown in Figure 2 ) is provided in the air outlet air duct 132. The air quality detection device 160 can monitor the air quality in the air outlet air duct 132 in real time, and the trigger signal may include an air pollution overlimit signal reported by the air quality detection device 160.

[0048] For the timed start signal, the air conditioner 1 can start the dust removal program regularly according to the operating time. For example, the dust removal program is started after 10 days of cumulative operation.

[0049] For the start signal from the user, the start signal can be a voice signal. For example, the user issues an instruction such as "start dust removal". The start signal can be other signals, such as a manual input signal, etc.

[0050] In step S420, the operating state of the air conditioner 1 may at least include a standby state, an operating state in the cooling mode or the heating mode, etc. The operating state of the air conditioner 1 can be identified by the power supply situation. For example, when the air conditioner 1 is in the operating state in the cooling mode or the heating mode, the power supply board of the air conditioner 1 supplies power to components such as the compressor 210 and the cross-flow fan 120. Therefore, when the above power supply situation is detected, it can be determined that the air conditioner 1 is in the operating state.

[0051] In step S430, after obtaining the trigger signal for dust removal of the protective net 140, it is determined whether the air humidity in the air outlet duct 132 is higher than the preset humidity threshold. That is to say, after obtaining the trigger signal for dust removal of the protective net 140, the system also needs to determine that the air humidity in the air outlet duct 132 meets the dust removal condition, so as to avoid the dust flying caused by rashly starting the dust removal program.

[0052] In step S440, when the air humidity in the air outlet duct 132 meets the dust removal condition, the protective net 140 is driven to reciprocate to dust the protective net 140 by using the brush 170. Since the air humidity in the air outlet duct 132 is relatively high at this time, driving the protective net 140 to reciprocate at this time can not only avoid the dust flying, but also eliminate the static electricity caused by the friction between the brush head 174 of the brush 170 and the protective net 140, thereby avoiding the situation that the dust is adsorbed by the static electricity on the two and cannot be cleaned.

[0053] For the control method of the air conditioner in this embodiment, before starting the dust removal of the protective net 140, it is necessary to first determine whether the air humidity in the air outlet duct 132 meets the dust removal condition, and only when the dust removal condition is met, the protective net 140 is driven to reciprocate to dust the protective net 140 by using the brush head 174 of the brush 170. In this way, not only can the automatic dust removal of the protective net 140 be realized, but also the dust flying can be avoided, and the dust removal effect can be improved.

[0054] In some embodiments, when the air humidity in the air outlet duct 132 is lower than the preset humidity threshold, that is, when the dust removal condition is not met, the humidifying device 190 can be used to forcibly humidify the air outlet duct 132 to make it reach the preset humidity threshold as soon as possible.

[0055] Specifically, the control method further includes the following steps: when the air humidity in the air outlet duct 132 is lower than the preset humidity threshold, the humidifying device 190 is started to increase the air humidity in the air outlet duct 132 until the air humidity in the air outlet duct 132 is higher than the preset humidity threshold.

[0056] It can be seen that for the control method of the air conditioner 1 in this embodiment, when the trigger signal for dust removal of the protective net 140 is obtained and the air humidity in the air outlet duct 132 does not meet the dust removal condition, the water vapor generated by the humidifying device 190 is cleverly used to increase the air humidity in the air outlet duct 132 to create the dust removal condition for the protective net 140.

[0057] In some embodiments, the steps after driving the protective net 140 to reciprocate further include: sending a reminder signal for starting dust removal to the user, and the reminder signal includes a light signal and / or a sound signal. The light signal and the sound signal can be used alternatively or simultaneously.

[0058] Further, the control method further includes: when the air humidity in the air outlet duct 132 is higher than a preset humidity threshold, controlling the air deflector 182 to move to a closed position that closes the air outlet duct 132. This can ensure that a small amount of dust generated during dust removal does not enter the room through the air outlet duct 132, and can also prevent users from putting hands or other sundries into the air outlet duct 132 during the reciprocating movement of the protective net 140, causing danger.

[0059] Further, the air conditioner 1 is configured to prohibit the air deflector 182 from opening during the reciprocating movement of the protective net 140.

[0060] In some specific implementation scenarios, during the reciprocating movement of the protective net 140, no matter what operation instructions other than the stop dust removal instruction are issued by the user, the air conditioner 1 can refuse to execute them. For example, during the reciprocating movement of the protective net 140 (during the dust removal process), the air deflector 182 is in the closed position. At this time, if the user forcibly controls the air conditioner 1 to switch to the working state (cooling mode or heating mode), the system can refuse to execute this instruction at this time, that is, prohibit the air deflector 182 from opening. This can not only ensure the normal progress of dust removal, but also avoid danger caused by the accidental opening of the air deflector 182 during the dust removal process.

[0061] In addition, if the user wants to end the dust removal in advance, an instruction to stop dust removal can be issued. After receiving the instruction to end dust removal, the protective net 140 can be first controlled to move from the current position to the shielding position, and then the program that prohibits the air deflector 182 can be lifted. The user can then freely switch the working state of the air conditioner 1.

[0062] In some embodiments, the steps after driving the protective net 140 to reciprocate further include: obtaining the duration of the reciprocating movement of the protective net 140. When the duration reaches a preset duration, driving the protective net 140 to move from the current position to the shielding position and allowing the air deflector 182 to open, completing the dust removal program.

[0063] The preset duration can be understood as the default dust removal duration of the system. In some specific embodiments, the preset duration can be set between 0.2 h and 1 h, such as 0.2 h, 0.5 h, 1 h, etc.

[0064] In some embodiments, the control method further includes: when it is recognized that the air conditioner 1 is in the standby state, driving the protective net 140 to reciprocate to dust the protective net 140 with a brush. That is, in the standby state, when a trigger signal is obtained, the protective net 140 is directly driven to reciprocate. Since the air deflector 182 is generally in the closed state in the standby state, directly dusting at this time has less impact and is convenient and feasible.

[0065] See Figure 6 , Figure 6It is a schematic diagram of the control method in the air conditioner 1 according to another embodiment of the present invention. In some embodiments, the control method of the air conditioner 1 can be carried out according to the following specific steps:

[0066] Step S501, obtain a trigger signal for starting the dust cleaning of the protection net 140. The trigger signal can be various. When any one of the various trigger signals is obtained, the dust removal program can be started. In some embodiments, the trigger signal may include an air pollution over-limit signal reported by the air quality detection device 160, a timed start signal, and a start signal from the user.

[0067] Step S502, identify the working state of the air conditioner 1, and the working state includes a standby state, an operating state in a cooling mode or a heating mode.

[0068] In step S502, when it is identified that the working state of the air conditioner 1 is the operating state, step S504 is executed: determine whether the air humidity in the air outlet duct 132 is higher than a preset humidity value.

[0069] When the determination result of step S504 is yes, step S505 is executed, the air deflector 182 is closed. In addition, after executing step S505, the air deflector 182 is prohibited from opening. After executing step S505, step S506 is executed, the protection net 140 is driven to reciprocate to dust the protection net 140 with the brush 170. In addition, after executing step S506, step S509 is executed, and a reminder signal for starting dust removal is sent to the user.

[0070] When the determination result of step S504 is no, step S507 is executed, the humidifying device 190 is started to increase the air humidity in the air outlet duct 132 until the air humidity in the air outlet duct 132 is higher than the preset humidity value to create conditions for dust removal.

[0071] After executing step S506, step S510 is executed, and it is determined whether the continuous duration of the reciprocating movement of the protection net 140 reaches a preset duration.

[0072] When the determination result of step S510 is yes, step S511 is executed, the protection net 140 is driven to move from the current position to the shielding position, and the air deflector 182 is allowed to open.

[0073] When the determination result of step S510 is no, step S512 is executed. When a trigger signal for stopping dust removal is obtained, it turns to execute step S511.

[0074] At this point, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the disclosed content of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A control method for an air conditioner, the air conditioner including an indoor unit, the indoor unit including an air duct framework having an air outlet duct, a protection net movable between a shielding position for shielding the air outlet duct and an exposing position for exposing the air outlet duct, and a brush disposed on the movement path of the protection net; the control method includes: Obtain a trigger signal for dust removal of the protection net; Identify the operating state of the air conditioner, where the operating state includes an operating state in a cooling mode or a heating mode; When it is recognized that the air conditioner is in the operating state, determine whether the air humidity in the air outlet duct is higher than a preset humidity threshold; When the air humidity in the air outlet duct is higher than the preset humidity threshold, drive the protection net to reciprocate, so as to use the brush to remove dust from the protection net; The air conditioner includes a humidifying device for increasing the air humidity in the air outlet duct; And the control method further includes: When the air humidity in the air outlet duct is lower than the preset humidity threshold, start the humidifying device to increase the air humidity in the air outlet duct until the air humidity in the air outlet duct is higher than the preset humidity threshold.

2. The control method according to claim 1, wherein, The air conditioner includes a wind deflector for opening and closing the air outlet duct, and the wind deflector is closer to the air outlet of the air outlet duct than the protection net; The control method further includes: When the air humidity in the air outlet duct is higher than the preset humidity threshold, control the wind deflector to move to a closed position to close the air outlet duct.

3. The control method according to claim 2, wherein, The air conditioner is configured to: prohibit the wind deflector from opening during the reciprocating movement of the protection net.

4. The control method according to claim 3, wherein, The steps after driving the protection net to reciprocate further include: Obtain the continuous duration of the reciprocating movement of the protection net; When the continuous duration reaches a preset duration, drive the protection net to move from the current position to the shielding position and allow the wind deflector to open.

5. The control method according to claim 1, wherein, The air conditioner includes an air quality detection device arranged in the air outlet duct; And The trigger signal includes: an air pollution overlimit signal reported by the air quality detection device, a timed start signal, and a start signal from the user.

6. The control method according to claim 1, wherein, The operating state further includes a standby state; and the control method further includes: When it is recognized that the air conditioner is in the standby state, drive the protection net to reciprocate to use the brush to remove dust from the protection net.

7. An air conditioner, including: An indoor unit, which includes an air duct framework, a protection net, and a brush; the air duct framework has an air outlet duct; the protection net is arranged in the air outlet duct to prevent foreign objects from entering the air outlet duct, and the protection net has a shielding position that shields the air outlet duct and an exposed position that exposes the air outlet duct; the brush is arranged on the air duct framework and is located on the movement path of the protection net to remove dust from the protection net; A controller, configured to obtain a trigger signal for dust removal of the protection net, identify the operating state of the air conditioner, when it is recognized that the air conditioner is in the operating state, determine whether the air humidity in the air outlet duct is higher than a preset humidity threshold, and when the air humidity in the air outlet duct is higher than the preset humidity threshold, drive the protection net to reciprocate to use the brush to remove dust from the protection net.

8. The air conditioner according to claim 7, wherein, The indoor unit further includes a driving mechanism for driving the protective net to move. The driving mechanism includes a motor, a gear and a rack that mesh with each other. The motor is installed on the air duct framework, the gear is installed on the motor, and the rack is formed on the protective net.

9. The air conditioner according to claim 7, wherein, The side wall of the air duct framework has a moving channel allowing the protective net to pass through; and The brush may further include a fixing part and a brush head part. The fixing part is fixed to the outer side of the side wall of the air duct framework, and the brush head part faces the moving channel. When the protective net passes through the moving channel, the brush head part is used to clean the dust on the protective net.

Images