Air conditioner control method and air conditioner

Abstract

The present invention provides an air conditioner control method and an air conditioner. The air conditioner includes a housing, a deflector and a water storage tank. An air outlet is provided on the housing, and the deflector is installed on the air outlet. The control method includes: in response to the start of the deflector self-cleaning mode, closing the air outlet, taking water from the water storage tank to form water mist, and applying the water mist to the deflector. In the air conditioner control method of the present invention, by closing the water outlet and cleaning the deflector with water mist inside the air conditioner, this method can facilitate the cleaning of the deflector and enable the air conditioner to have the function of self-cleaning the deflector.

Description

Technical Field

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

[0002] After the air conditioner runs for a long time, dust, dirt and other impurities will gradually accumulate on the guide vanes. If not cleaned in time, it may affect the health of users. In the existing air conditioner, in the shutdown state, the air outlet is in a closed state, which is not conducive to manual cleaning of the guide plate; in the startup state, affected by the air flow from the air outlet, it is also not conducive to manual cleaning of the guide plate. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide an air conditioner control method and an air conditioner that overcome the above problems or at least partially solve the above problems, and the method can conveniently clean the guide plate.

[0004] Specifically, the present invention provides an air conditioner control method. The air conditioner includes a housing, a guide plate and a water storage tank. An air outlet is provided on the housing, and the guide plate is installed on the air outlet;

[0005] The control method includes:

[0006] In response to the start of the guide plate self-cleaning mode, close the air outlet, take water from the water storage tank to form water mist, and apply the water mist to the guide plate.

[0007] Optionally, the method for forming the water mist includes:

[0008] Humidify the first air flow with the water in the water storage tank, and heat the humidified first air flow to form a hot and humid air flow;

[0009] Cool the hot and humid air flow to form the water mist.

[0010] Optionally, the hot and humid air flow is cooled by mixing it with a second air flow, where the temperature of the second air flow is lower than the temperature of the hot and humid air flow.

[0011] Optionally, the second air flow flows in a direction close to the guide plate, and the mixing area of the second air flow and the hot and humid air flow is located on the flow path of the second air flow.

[0012] Optionally, in response to receiving a manual switch signal; or

[0013] In response to the running time of the air conditioner reaching a set duration; or

[0014] In response to the light transmittance of the air outlet being not higher than a threshold value,

[0015] Start the self-cleaning mode of the deflector.

[0016] The present invention also provides an air conditioner, comprising:

[0017] A housing provided with an air outlet and an air inlet on the housing;

[0018] A deflector located on the air outlet;

[0019] A water storage tank located inside the housing, and a water mist generating structure for forming water mist from the water taken from the water storage tank and acting on the deflector is provided inside the housing;

[0020] A control device configured to close the air outlet in response to the start of the self-cleaning mode of the deflector and control the operation of the water mist generating structure.

[0021] Optionally, the air conditioner further comprises:

[0022] A water receiving tray configured to receive the return water flowing down from the deflector.

[0023] Optionally, the water mist generating structure comprises:

[0024] A water washing air duct, the inlet of which is connected to the air inlet, and the water storage tank and a heating device are provided inside the water washing air duct;

[0025] A refrigeration air duct, the inlet of which is connected to the air inlet, the outlet of which is connected to the deflector, a refrigeration device is provided inside the refrigeration air duct, and the outlet of the water washing air duct is connected to a position between the refrigeration device and the outlet of the refrigeration air duct in the refrigeration air duct.

[0026] Optionally, the heating device is located downstream of the water storage tank.

[0027] Optionally, the control device is further configured to respond to receiving a manual switch signal; or

[0028] Respond to the running time of the air conditioner reaching a set duration; or

[0029] Respond to the light transmittance of the air outlet being not higher than a threshold value,

[0030] Start the self-cleaning mode of the deflector.

[0031] In a control method of an air conditioner according to the present invention, by closing the water outlet and cleaning the deflector with water mist inside the air conditioner, this method can facilitate the cleaning of the deflector and enable the air conditioner to have the function of self-cleaning the deflector.

[0032] Furthermore, the present invention forms water mist by cooling humid and hot air flow, and the method for forming the water mist is simple to operate and safe and reliable.

[0033] Furthermore, the second air flow has a pressurizing effect on the water mist, and the water mist can act on all corners of the guide plate along the flow path of the second air flow, which can further improve the cleaning effect of the water mist on the guide plate.

[0034] From 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. Description of the Drawings

[0035] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but non-limiting 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:

[0036] Figure 1 is a flowchart of an air conditioner control method according to an embodiment of the present invention;

[0037] Figure 2 is a schematic partial structure diagram of an air conditioner according to an embodiment of the present invention. Detailed Embodiments

[0038] The following will refer to Figures 1 to 2 to describe the air conditioner control method and the air conditioner of the embodiments of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0039] Unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0040] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. That is, in the description of this embodiment, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", or "under" the second feature may be the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0041] In the description of this embodiment, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0042] Figure 1 is a flowchart of an air conditioner control method according to an embodiment of the present invention, as Figure 1 shown, and with reference to Figure 2 , an embodiment of the present invention provides an air conditioner control method. The air conditioner includes a housing 10, a deflector, and a water storage tank 21. An air outlet 11 is provided on the housing 10, and the deflector is installed on the air outlet 11; the control method includes: in response to the start of the deflector self-cleaning mode, closing the air outlet 11, taking water from the water storage tank 21 to form water mist, and applying the water mist to the deflector.

[0043] In an air conditioner control method of the present invention, by closing the air outlet 11 and cleaning the deflector with water mist inside the air conditioner, this method can facilitate the cleaning of the deflector and also enable the air conditioner to have the function of self-cleaning the deflector.

[0044] In some embodiments of the present invention, the method for forming water mist includes: humidifying the first air flow with the water in the water storage tank 21, and heating the humidified first air flow to form a humid and hot air flow; cooling the humid and hot air flow to form water mist. The present invention forms water mist by cooling the humid and hot air flow, and the method for forming water mist is simple to operate and safe and reliable. Specifically, by humidifying the first air flow, a humidified air flow can be obtained, and the humidified air flow contains a large amount of water vapor; by heating the humidified air flow, the temperature and flow travel of the humidified air flow can be increased to obtain a humid and hot air flow, which not only has a high temperature but also can flow a long distance; by cooling the humid and hot air flow to form water mist, the water mist contains a large amount of small-molecule water, and the water mist has a long flow travel, and the water mist acts on the guide plate to form a water flow, which can effectively clean the dirt on the surface of the guide plate.

[0045] In some embodiments of the present invention, the humid and hot air is cooled by mixing the second air flow and the humid and hot air flow, wherein the temperature of the second air flow is lower than the temperature of the humid and hot air. The above method of cooling by mixing the second air flow into the humid and hot air flow is simple to operate.

[0046] Preferably, the second air flow flows in a direction close to the guide plate, and the mixing area of the second air flow and the humid and hot air flow is located on the flow path of the second air flow. The second air flow has a pressurizing effect on the water mist, and the water mist can act on each corner of the guide plate along the flow path of the second air flow, which can further improve the cleaning effect of the water mist on the guide plate.

[0047] In some embodiments of the present invention, the self-cleaning mode of the guide plate can be manually activated. Specifically, in response to receiving a manual switch signal, the self-cleaning mode of the guide plate is activated. The above manual switch signal is a manual opening signal sent by a button or a remote control.

[0048] In some embodiments of the present invention, when the running time of the air conditioner reaches a set duration, the air conditioner automatically activates the self-cleaning mode of the guide plate. Specifically, the above set duration is defined as the first time, and the cooling or heating running time of the air conditioner is defined as the second time. When the second time is greater than or equal to the first time, the air conditioner automatically activates the self-cleaning mode of the guide plate.

[0049] In some embodiments of the present invention, when the light transmittance of the air outlet 11 is not higher than a threshold value, the air conditioner automatically starts the deflector cleaning mode. Specifically, the light transmittance refers to the passing rate of light through the deflector. A light sensor and a receiver are provided at the air outlet, and the light sensor and the receiver are respectively located on both sides of the deflector; when the deflector is in a clean state, the light emitted by the light sensor passes through the deflector and is received by the receiver; when there is dirt on the deflector, the dirt will block part of the light emitted by the light sensor, and the light transmittance will decrease. Define the light transmittance when the air conditioner starts the deflector cleaning mode as the first threshold value. When the light transmittance of the air outlet 11 is equal to or less than the above first threshold value, the air conditioner automatically starts the deflector cleaning mode.

[0050] When the air conditioner can automatically turn on the deflector self-cleaning mode, it is beneficial to clean the deflector in time, and there is no need for the user to manually turn on the deflector cleaning mode to clean the deflector, thereby further reducing the impact of deflector pollution on the user's physical health.

[0051] In some embodiments of the present invention, the deflector self-cleaning mode can be manually turned off. Specifically, when the air conditioner receives a manual switch signal, the deflector self-cleaning mode is turned off. The manual switch signal is a manual off signal sent by a button or a remote control.

[0052] In some embodiments of the present invention, the deflector self-cleaning mode can be automatically turned off. For example: when the running time of the self-cleaning mode reaches the first preset time (for example: 30 min), the deflector self-cleaning mode is turned off; or, when the light transmittance of the air outlet 11 is equal to or higher than the second threshold value, the deflector self-cleaning mode is turned off. The second threshold value is higher than the first threshold value.

[0053] Figure 2 is a schematic partial structure diagram of an air conditioner according to an embodiment of the present invention, as Figure 2 shown, the embodiment of the present invention also provides an air conditioner, which includes a housing 10, a deflector, a water storage tank 21 and a control device.

[0054] An air outlet 11 and an air inlet are provided on the housing 10; the deflector is located on the air outlet 11; the water storage tank 21 is located inside the housing 10, and a water mist generating structure for forming water mist from the water taken from the water storage tank 21 and acting on the deflector is provided inside the housing 10; the control device is configured to close the air outlet 11 in response to the start of the deflector self-cleaning mode and control the operation of the water mist generating structure.

[0055] Specifically, the deflector includes a wind deflector and swing blades. The wind deflector is rotatably installed at the air outlet 11 for opening or closing the air outlet 11. A plurality of swing blades are arranged along the length direction of the deflector and are spaced apart inside the deflector. By driving each swing blade to swing left or right simultaneously, the direction of the air flow flowing out of the air outlet 11 can be adjusted in the length direction of the deflector (usually the horizontal direction of the indoor unit of the air conditioner).

[0056] In this embodiment, the air conditioner has the function of self-cleaning the deflector. The working process of this deflector self-cleaning function is as follows: close the air outlet 11, operate the water mist generating structure, and the water mist flows to the deflector to form a water flow on the surface of the deflector, so as to realize the cleaning of the dirt on the surface of the deflector.

[0057] In some embodiments of the present invention, as Figure 2 shown, the air outlet 11 is located on the front side of the housing 10, and the air inlet is located on the rear side of the housing 10. The inlet of the water washing air duct 20 and the inlet of the refrigeration air duct 30 are both communicated with the above-mentioned air inlet. In some alternative embodiments, the air inlet includes a first air inlet and a second air inlet. The first air inlet is located on the lower side of the housing 10, and the second air inlet is located on the upper side of the housing 10. The inlet of the water washing air duct 20 is communicated with the first air inlet of the housing 10, and the inlet of the refrigeration air duct 30 is communicated with the second air inlet.

[0058] In some embodiments of the present invention, as Figure 2 shown, the water mist generating structure includes a water washing air duct 20 and a refrigeration air duct 30.

[0059] The inlet of the water washing air duct 20 is connected to the air inlet. A water storage tank 21 is provided in the water washing air duct 20; the inlet of the refrigeration air duct 30 is connected to the air inlet, the outlet of the refrigeration air duct 30 is connected to the deflector, a refrigeration device 31 is provided in the refrigeration air duct 30, and the outlet of the water washing air duct 20 is connected to a position between the refrigeration device 31 and the outlet of the refrigeration air duct 30. Specifically, there is a first air flow in the water washing air duct 20 and a second air flow in the refrigeration air duct 30.

[0060] Preferably, as Figure 2 shown, a heating device 22 is further provided in the water washing air duct 20 for heating the first air flow in the water washing air duct 20 to form a humid and hot air flow. When in the deflector self-cleaning mode, the temperature of the humid and hot air flow is 50-70 ° (for example: 50 °, 54 °, 57 °, 62 °, 65 °, 68 ° or 70 °); preferably, the temperature of the humid and hot air flow is 60 °.

[0061] Further preferably, as Figure 2 shown, the heating device 22 is located downstream of the water storage tank 21. In some alternative embodiments of the present invention, the heating device 22 is located upstream of the water storage tank 21; or, the heating device 22 is located at the bottom of the water storage tank 21.

[0062] Compared with being located upstream of the water storage tank 21, the heating device 22 is located downstream of the water storage tank 21, which can reduce the heat loss of the first air flow less during the process of flowing to the air outlet 11. That is to say, it can make the humid and hot air flow maintain a higher temperature when meeting the second air flow, so that it is easier to form water mist, and the particle size of the formed water mist is smaller, thereby further improving the cleaning effect on the guide plate.

[0063] Specifically, as Figure 2 shown, a first horizontal partition 24 is provided in the housing 10; the first horizontal partition 24 is arranged between the refrigeration air duct and the water washing air duct 20, and the outlet of the water washing air duct 20 is located on the first horizontal partition 24; the refrigeration air duct is located above the water washing air duct 20. The heating device 22 is arranged above the water storage tank 21. The heating device 22 can be a heating rod or a heating plate.

[0064] Preferably, as Figure 2 shown, a second horizontal partition 25 is further provided in the housing 10. The second horizontal partition 25 is located between the drum 23 and the first horizontal partition 24. The heating device 22 is a heating plate, and the heating plate is vertically arranged and located between the first horizontal partition 24 and the second horizontal partition 25. A plurality of openings are provided on the heating plate for the first air flow to pass through. Compared with the heating rod, the heating plate can increase the contact area between the first air flow and the heating device 22, thereby improving the heating efficiency.

[0065] In some embodiments of the present invention, as Figure 2 shown, a drum 23 is provided in the water storage tank 21, and the drum 23 is rotatably installed in the water storage tank 21. The drum 23 includes a rotating shaft and a plurality of water washing discs sleeved on the rotating shaft. The rotating shaft extends horizontally, and the plurality of water washing discs are arranged at intervals along the extending direction of the rotating shaft. When the first air flow flows to the drum 23 in a direction perpendicular to the rotating shaft of the drum 23, it flows through the gap between two adjacent water washing discs. Specifically, each water washing disc includes a hollowed-out disc box and a disc core arranged in the disc box and having water absorption performance. The drum 23 is arranged to take out the water in the water storage tank 21 through the disc core of the water washing disc when rotating, so as to wash and humidify the first air flow with the water absorbed by the disc core when the first air flow flows through the gap between two adjacent water washing discs of the drum 23. By providing the drum, the flow rate of the first air flow can be increased.

[0066] Furthermore, the power of the water washing disc is 260w. When the air conditioner is in the guide plate self-cleaning mode, the rotation speed of the drum is the first rotation speed; when the air conditioner is in the normal refrigeration mode, the rotation speed of the drum is the second rotation speed; the first rotation speed is greater than the second rotation speed.

[0067] Specifically, when in the deflector self-cleaning mode, the rotational speed of the drum 23 is 10 - 20 revolutions per minute (for example: 10 revolutions per minute, 12 revolutions per minute, 14 revolutions per minute, 16 revolutions per minute, 18 revolutions per minute or 20 revolutions per minute); preferably, the rotational speed of the drum 23 is 15 revolutions per minute. It should be noted that when the air conditioner is in the normal cooling mode, the rotational speed of the drum 23 is 5 revolutions per minute.

[0068] In some embodiments of the present invention, the refrigeration device 31 includes an evaporator. In other embodiments, the refrigeration device 31 includes a condenser.

[0069] When in the deflector self-cleaning mode, the refrigeration temperature of the refrigeration device 31 is lower than the room temperature. For example, when the indoor temperature is 25°, the refrigeration temperature of the refrigeration device 31 in the deflector self-cleaning mode is 24°.

[0070] Preferably, when in the deflector self-cleaning mode, the wind speed of the refrigeration device 31 is adjusted to the maximum wind speed.

[0071] In some embodiments of the present invention, the air conditioner further includes a water receiving tray, and the water receiving tray is configured to hold the return water flowing down from the deflector.

[0072] Specifically, the water receiving tray is located below the refrigeration air duct, and a drain opening is provided at the bottom of the water receiving tray, and the drain opening communicates with the outside to drain the above-mentioned return water on the deflector to the outside.

[0073] In some embodiments of the present invention, the air conditioner further includes a remote controller, and the remote controller can be used to send a manual switch signal to the air conditioner to manually control the opening or closing of the deflector self-cleaning mode. In some alternative embodiments of the present invention, the air conditioner further includes a control panel, and the control panel can be used to send a manual switch signal to the air conditioner to manually control the opening or closing of the deflector self-cleaning mode; or, the air conditioner further includes a button, and the button can be used to send a manual switch signal to the air conditioner to manually control the opening or closing of the deflector self-cleaning mode.

[0074] In some embodiments of the present invention, the air conditioner further includes a light sensor and a receiver, and the light sensor and the receiver are respectively located on both sides of the deflector for detecting the light transmittance of the deflector. The light emitted by the light sensor passes through the deflector and can be received by the receiver. The cleaner the surface of the deflector, the more light the receiver receives, and the higher the light transmittance of the deflector; on the contrary, the dirtier the surface of the deflector, the less light the receiver receives, and the lower the light transmittance of the deflector.

[0075] In some embodiments of the present invention, the above control device is a module within the control board.

[0076] In some embodiments of the present invention, the control device is further configured to start the deflector self-cleaning mode in response to receiving a manual switch signal. Specifically, when the control device receives a manual opening signal, the air conditioner starts the deflector self-cleaning mode under the control of the control device.

[0077] In some embodiments of the present invention, the control device is further configured to start the deflector self-cleaning mode in response to the operating time of the air conditioner reaching a set duration. Specifically, when the operating time of the air conditioner reaches the set duration, the air conditioner automatically starts the deflector self-cleaning mode under the control of the control device.

[0078] In some embodiments of the present invention, the control device is further configured to start the deflector self-cleaning mode in response to the light transmittance of the air outlet 11 being not higher than a threshold value. Specifically, when the light transmittance of the air outlet 11 is not higher than the first threshold value, the air conditioner automatically starts the deflector cleaning mode under the control of the control device.

[0079] In some embodiments of the present invention, the control device is further configured to turn off the deflector self-cleaning mode in response to receiving a manual switch signal. Specifically, when the air conditioner receives a manual closing signal, the air conditioner turns off the deflector self-cleaning mode under the control of the control device.

[0080] In some embodiments of the present invention, the control device is further configured to automatically turn off the deflector self-cleaning mode in response to the operating time of the self-cleaning mode reaching a first preset time. Specifically, when the operating time of the self-cleaning mode reaches the first preset time, the air conditioner turns off the deflector self-cleaning mode under the control of the control device.

[0081] In some embodiments of the present invention, the control device is further configured to automatically turn off the deflector self-cleaning mode in response to the light transmittance of the air outlet 11 being equal to or higher than a second threshold value. Specifically, when the light transmittance of the air outlet 11 is equal to or higher than the second threshold value, the air conditioner turns off the deflector self-cleaning mode under the control of the control device.

[0082] In some embodiments of the present invention, the air conditioner further includes a sound prompt device, and the sound prompt device is electrically connected to the control device. The sound prompt device is configured to: after the self-cleaning mode ends, the sound prompt device emits a first self-cleaning prompt signal for prompting the end of the deflector cleaning. After the user hears the first self-cleaning prompt signal, the user can timely learn that the air conditioner has completed the deflector self-cleaning, and can timely turn on the cooling or heating mode of the air according to the needs. Therefore, by setting the sound prompt device, the personal use experience of the user can be improved.

[0083] Further, the sound prompt is further configured to: when the self-cleaning mode is automatically started, the sound prompt emits a second self-cleaning prompt signal for prompting the guide plate to start the self-cleaning mode. After the user hears the first self-cleaning prompt signal, the user can timely learn that the air conditioner has started the guide plate self-cleaning mode, thereby further improving the user's personal use experience.

[0084] Up to this point, those skilled in the art should recognize that although multiple 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 content disclosed in 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 determined to cover all these other variations or modifications.

Claims

1. An air conditioner, characterized in that, Comprising: A housing, on which an air outlet and an air inlet are provided; the air outlet is located at the front side of the housing; the air inlet is located at the rear side of the housing; A guide plate, which is located on the air outlet; A water storage tank, which is located inside the housing, and a water mist generating structure for forming water mist from the water taken from the water storage tank and acting on the guide plate is provided inside the housing; A control device, which is configured to close the air outlet and control the operation of the water mist generating structure in response to the start of the self-cleaning mode of the guide plate; Wherein, the water mist generating structure includes: A water washing air duct, the inlet of which is connected to the air inlet, and the water storage tank and a heating device are provided inside the water washing air duct; the heating device is used to form a humid and hot air flow at 50 to 70 °C; A refrigeration air duct, the inlet of which is connected to the air inlet, the outlet of which is connected to the guide plate, a refrigeration device is provided inside the refrigeration air duct, and the outlet of the water washing air duct is connected to a position between the refrigeration device and the outlet of the refrigeration air duct in the refrigeration air duct; The heating device is located downstream of the water storage tank; a first horizontal partition and a second horizontal partition are provided above the water storage tank inside the housing; the refrigeration air duct is located above the first horizontal partition, the water washing air duct is located below the first horizontal partition, and the outlet of the water washing air duct is located on the first horizontal partition; the second horizontal partition is located below the first horizontal partition, the heating device is a heating plate, the heating plate is vertically arranged and located between the first horizontal partition and the second horizontal partition, and a plurality of openings are provided on the heating plate for the first air flow to pass through.

2. The air conditioner according to claim 1, characterized in that, The air conditioner further includes: A water receiving tray, which is configured to receive the return water flowing down from the guide plate.

3. The air conditioner according to claim 1, characterized in that, The control device is further configured to respond to receiving a manual switch signal; or In response to the operation time of the air conditioner reaching a set duration; or In response to the light transmittance of the air outlet being not higher than a threshold value, Start the self-cleaning mode of the guide plate.

4. A control method applied to the air conditioner according to any one of claims 1 to 3, characterized in that, The control method includes: In response to the start of the self-cleaning mode of the guide plate, close the air outlet, take water from the water storage tank to form the water mist, and act the water mist on the guide plate; The method for forming the water mist includes: Humidify the first air flow with the water in the water storage tank and heat the humidified first air flow to form the humid and hot air flow; Cool the humid and hot air flow to form the water mist: cool the humid and hot air flow by mixing the second air flow and the humid and hot air flow, wherein the temperature of the second air flow is lower than that of the humid and hot air flow; the second air flow flows towards the direction close to the guide plate, and the mixing area of the second air flow and the humid and hot air flow is located on the flow path of the second air flow.

5. The control method according to claim 4, characterized in that, In response to receiving a manual switch signal, start the self-cleaning mode of the guide plate.

6. The control method according to claim 4, characterized in that, In response to the operation time of the air conditioner reaching a set duration, start the self-cleaning mode of the guide plate.

7. The control method according to claim 4, characterized in that, In response to the light transmittance of the air outlet being not higher than a threshold value, start the self-cleaning mode of the guide plate.

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