Method for cleaning an air conditioner filter

Abstract

The application discloses a cleaning method of an air conditioner filter screen. The cleaning method comprises the following steps: a control device controls the air conditioner to enter a first state, the first state is a refrigeration mode and keeps a first air outlet state; so that the inner unit heat exchanger surface of the air conditioner condenses water drops; after running for a first time, the control device controls the air conditioner to enter a second state, the second state is a heating mode and keeps a second air outlet state, so as to heat the heat exchanger, evaporate the water drops and spray the water drops on the filter screen; after running for a second time, the control device controls the air conditioner to enter a third state, the third state is a third air outlet state, so as to blow off the water drops on the filter screen; after running for a third time, the control device controls the air conditioner to enter the first state again, and the air conditioner is sequentially and circularly operated in the first state, the second state and the third state. The cleaning method adjusts the operation of the air conditioner, so that the water drops are gathered on the surface of the filter screen, the dirt is washed away by the water drops, and the cleaning is automatic and does not need manual cleaning of the user.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a method for cleaning air conditioning filters. Background Technology

[0002] An air conditioner, also known as an air conditioner, is a device that uses artificial means to regulate and control parameters such as temperature, humidity, and airflow of the air in a building or its interior. Air conditioner units are typically equipped with filters to remove dust from the air, ensuring user safety.

[0003] The air filter, usually made of nylon, is installed at the air inlet of the air conditioner and can be removed for cleaning. In existing wall-mounted split-type air conditioners, dust and dirt easily accumulate on the filter after prolonged use. This accumulated dirt can breed bacteria and unpleasant odors. Failure to clean it promptly can also harm the user's health.

[0004] Existing methods for cleaning filters require manual cleaning by users, resulting in a poor user experience. Summary of the Invention

[0005] The purpose of this application is to provide a method for cleaning air conditioner filters to improve the above-mentioned problems.

[0006] To address the aforementioned technical problems, this application provides a method for cleaning an air conditioner filter. The method includes: a control device controlling the air conditioner to enter a first state, which is a cooling mode and maintains a first air outlet state; causing water droplets to condense on the surface of the heat exchanger of the air conditioner's indoor unit; after a first period of operation, the control device controlling the air conditioner to enter a second state, which is a heating mode and maintains a second air outlet state, to heat the heat exchanger, causing the water droplets to evaporate and spray onto the filter; after a second period of operation, the control device controlling the air conditioner to enter a third state, which is a third air outlet state, to blow away the water droplets on the filter; after a third period of operation, the control device controlling the air conditioner to re-enter the first state, and causing the air conditioner to cycle through the first, second, and third states sequentially.

[0007] In one possible implementation, the air conditioner includes: a cleaning fluid container for holding cleaning fluid; a first suction mechanism connected to the cleaning fluid container and connected to the control device for suctioning the cleaning fluid; and a foaming device connected to the first suction mechanism and configured corresponding to the filter screen, wherein the cleaning fluid is suctioned to the foaming device, foamed, and then sprayed onto the filter screen; the second state of the air conditioner further includes: the control device controlling the first suction mechanism to suction foaming liquid, which is then foamed by the foaming device and sprayed onto the filter screen.

[0008] In one possible implementation, the air conditioner further includes: a humidity testing device disposed inside the air conditioner and connected to the control device; a condensate receiving container connected to the condensate pipe of the air conditioner for storing condensate generated by the air conditioner; and a second suction mechanism connected to the condensate receiving container and connected to the control device. The cleaning method further includes: in response to the humidity testing device testing that the indoor humidity is lower than a preset humidity, the second state further includes: the control device controlling the second suction mechanism to suction condensate and spray it onto the filter screen.

[0009] In one possible implementation, in the first air outlet state, the indoor fan of the air conditioner rotates forward; in the second air outlet state, the indoor fan rotates in reverse, and the reverse airflow is used to spray water droplets evaporated on the surface of the heat exchanger onto the filter screen; in the third air outlet state, the indoor fan rotates forward.

[0010] In one possible implementation, the air outlet speed of the first air outlet state is the minimum air outlet speed of the air conditioner; the air outlet speeds of the second and third air outlet states are the maximum air outlet speeds of the air conditioner.

[0011] In one possible implementation, after the air conditioner operates in the second state for the second time, the control device controls the air conditioner to standby for a preset time so that the water droplets can fully soak the dirt.

[0012] In one possible implementation, the control device further includes: in response to the temperature being higher than a first preset temperature, controlling the air conditioner to blow air at the maximum airflow speed to dry the filter.

[0013] In one possible implementation, the system further includes: in response to the temperature being lower than a first preset temperature, the control device controls the air conditioner to be in heating mode and controls the air conditioner to blow air at maximum airflow speed to dry the filter.

[0014] In one possible implementation, the first preset temperature is 29 degrees Celsius.

[0015] In one possible implementation, before the step of the control device controlling the air conditioner to enter the first state, the method further includes: the control device controlling the air conditioner to be in heating mode so that the indoor temperature reaches a second preset temperature.

[0016] The beneficial effect of this application is that, unlike the prior art, this application provides a method for cleaning an air conditioner filter. This cleaning method includes: a control device controlling the air conditioner to enter a first state, which is a cooling mode and maintains a first air outlet state; causing water droplets to condense on the surface of the heat exchanger in the indoor unit of the air conditioner; after a first period of operation, the control device controlling the air conditioner to enter a second state, which is a heating mode and maintains a second air outlet state, to heat the heat exchanger, causing the water droplets to evaporate and spray onto the filter; after a second period of operation, blowing off the water droplets from the filter. This cleaning method, by adjusting the operation of the air conditioner to cause water droplets to accumulate on the filter surface, and then using these water droplets to wash away dirt, automates the cleaning process and eliminates the need for manual cleaning by the user. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is a flowchart illustrating the first embodiment of the air conditioner filter cleaning method of this application;

[0019] Figure 2 This is a flowchart illustrating the second embodiment of the air conditioner filter cleaning method of this application;

[0020] Figure 3 This is a flowchart illustrating the third embodiment of the air conditioner filter cleaning method of this application;

[0021] Figure 4 This is a flowchart illustrating the fourth embodiment of the air conditioner filter cleaning method of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless otherwise clearly indicated above. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0024] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0025] It should be understood that the terms "comprising," "including," or any other variations used herein are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] One way to clean existing air conditioner filters is for users to clean them manually, which results in a poor user experience.

[0027] This application proposes a method for cleaning air conditioner filters. By adjusting the operating status of the air conditioner, water droplets accumulate on the surface of the filter to clean it, effectively solving the aforementioned problems. The method for cleaning air conditioner filters provided in this application will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] Please see Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the air conditioner filter cleaning method of this application. In a specific embodiment, the cleaning method includes:

[0029] S11: The control device controls the air conditioner to enter the first state, which is the cooling mode and maintains the first air outlet state, so that water droplets condense on the surface of the heat exchanger of the indoor unit of the air conditioner.

[0030] Specifically, in cooling mode, the indoor unit heat exchanger of the air conditioner maintains a low temperature. When the water vapor in the indoor air comes into contact with the heat exchanger, which has a lower temperature, it liquefies into droplets and adheres to the surface of the heat exchanger, resulting in a large number of droplets on the surface of the heat exchanger.

[0031] To improve the efficiency of air condensing into droplets upon cooling and adhering to the heat exchanger surface, in this embodiment, the air conditioner maintains a relatively low airflow velocity in the first air outlet state. Maintaining a low airflow velocity results in a lower airflow velocity near the heat exchanger, which is more conducive to water vapor condensing into droplets and adhering to the heat exchanger surface. In a preferred embodiment, the airflow velocity in the first air outlet state is the minimum airflow velocity of the air conditioner.

[0032] S12: After the first operation, the control device controls the air conditioner to enter the second state, which is the heating mode and maintains the second air outlet state, to heat up the heat exchanger, so that the water droplets evaporate and are sprayed onto the filter screen.

[0033] In this second air outlet state, the air outlet speed is greater than that in the first air outlet state. In the second air outlet state, a large number of water droplets accumulated on the heat exchanger surface are blown off and sprayed onto the filter screen. The water droplets, upon impact with the filter screen, dissolve the dirt on its surface and then blown off with the water droplets, thus cleaning the filter screen. In a preferred embodiment, the air outlet speed in the second air outlet state is the maximum air outlet speed of the air conditioner.

[0034] S13: After the second time of operation, the control device controls the air conditioner to enter the third state, which is the third air outlet state, to blow off the water droplets on the filter screen.

[0035] In this step, the air outlet state is changed to blow off the water droplets on the filter screen. In the second air outlet state, the air conditioner draws in the water droplets on the heat exchanger and sprays them onto the filter screen. In the third air outlet state, the air conditioner blows the water droplets off the filter screen. When the water droplets are blown out, they also blow out the dirt, thus achieving the purpose of cleaning the filter screen.

[0036] In the third state, the air conditioner neither cools nor heats, but only blows air.

[0037] In one specific embodiment, in the first air outlet state, the indoor fan of the air conditioner rotates forward; in the second air outlet state, the indoor fan rotates in reverse, and the reverse airflow is used to spray water droplets evaporated on the heat exchanger surface onto the filter screen. In the third air outlet state, the indoor fan rotates forward. Specifically, when the indoor fan rotates forward, air is blown out of the air conditioner's outlet; when the indoor fan rotates in reverse, air is drawn in from the air conditioner's outlet.

[0038] S14: After the third time of operation, the control device controls the air conditioner to re-enter the first state, and makes the air conditioner work in a cycle of the first state, the second state and the third state in sequence.

[0039] The system repeatedly enters the first, second, and third states sequentially, repeatedly generating and blowing away water droplets on the filter screen. This repeated water droplet cleaning improves the cleaning effect. In this embodiment, the control device controls the air conditioner to cycle through the first, second, and third air outlet states three times, repeatedly generating and blowing away water droplets to wash away dirt and thoroughly clean the filter screen. In some other embodiments, the control device may also be set to control the air conditioner to cycle through the first, second, and third air outlet states two, four, five times, or other numbers of times; no specific limitation is made here.

[0040] Unlike existing technologies, this application proposes a method for cleaning air conditioner filters. This method involves adjusting the air conditioner's operation to form water droplets on the heat exchanger surface, then spraying these droplets onto the filter screen. The water droplets carry away dirt from the filter screen, and this process is repeated to achieve automatic filter cleaning, eliminating the need for manual cleaning by the user and improving the user experience.

[0041] In this embodiment, the control device serves as the control center for the air conditioner, used to control its status. For example, it controls whether the air conditioner is in heating mode, cooling mode, fan mode, or standby mode. The control device also controls the operating power of the internal fan and compressor during operation to adjust the airflow speed, heating level, and cooling level.

[0042] In this embodiment, the control device can be an integrated circuit chip with signal processing capabilities. In some other embodiments, the control device can also be a general-purpose processor, digital signal processor, application-specific integrated circuit, or other devices capable of receiving and processing signals and generating corresponding control electrical signals, without specific limitations. The control device is installed inside the air conditioner and is signal-connected to the air conditioner's fan, compressor, etc. After receiving control commands from an external user via a remote control or other control device, the control device controls the operating status of each device.

[0043] When cleaning the filter, the air conditioner is controlled to be in cooling mode via a control device. In some embodiments, the process further includes receiving a cleaning instruction for cleaning the filter before this step. The cleaning instruction is specifically issued by the user via a remote control or other control device.

[0044] Furthermore, in some embodiments, the control device automatically performs filter cleaning periodically. For example, it performs filter cleaning once a month, every two months, or every three months. This is to prevent serious dirt buildup caused by the user not cleaning the filter in a timely manner. When the filter cleaning is required periodically, the control device first controls the air conditioner to enter cooling mode.

[0045] If the air conditioner is determined not to be in cooling mode, the control device first puts the air conditioner into standby mode before controlling its cooling function. For example, if the air conditioner receives a cleaning command while in heating mode, it first stops the compressor and fan. Then, it performs filter cleaning and controls the air conditioner to switch to cooling mode.

[0046] When the air conditioner is in cooling mode, cold air is blown out of the air outlet.

[0047] In addition, to improve the formation of water droplets on the surface of the heat exchanger, in a preferred embodiment, the control device controls the air conditioner to operate at its maximum cooling mode, for example, adjusting the air cooling mode to 16 degrees Celsius. This is to keep the surface temperature of the heat exchanger as low as possible, facilitating the liquefaction of water vapor upon contact with the cold air.

[0048] Please see Figure 2 , Figure 2 This is a flowchart illustrating a second embodiment of the air conditioner filter cleaning method of this application. In another specific embodiment, the cleaning method includes:

[0049] S21: The control device controls the air conditioner to enter the first state, which is the cooling mode and maintains the first air outlet state, so that water droplets condense on the surface of the heat exchanger of the indoor unit of the air conditioner.

[0050] Please refer to S11 for details on this step, which will not be repeated here.

[0051] Furthermore, in this embodiment, prior to this step, the method further includes: controlling the air conditioner to blow air at its maximum speed via a control device to blow away loose dirt from the filter screen. Specifically, in addition to sticky dirt, the filter screen also contains a large amount of loose dust attached to its surface. This step, by maximizing the airflow speed at the air conditioner's outlet, allows the airflow to carry away the dust from the filter screen, thus providing a preliminary cleaning effect.

[0052] Furthermore, in some preferred embodiments, prior to this step, the method further includes: controlling the air conditioner to enter heating mode to bring the indoor temperature to a second preset temperature. It is understood that in winter or when the indoor temperature is low, even in cooling mode, it is difficult for the vapor on the heat exchanger surface to liquefy into droplets upon cooling. To ensure droplet accumulation on the heat exchanger surface even at low temperatures, in this step, if the indoor temperature is lower than the second preset temperature, the air conditioner is first controlled to enter heating mode by the control device. Once the indoor air temperature reaches the second preset temperature, the air conditioner is then switched to cooling mode. This step allows the indoor air to warm up first, resulting in a larger temperature difference between the warmed air and the surface of the heat exchanger during cooling. This larger temperature difference makes it easier for the air to liquefy into droplets upon cooling, leading to more droplet accumulation on the heat exchanger in subsequent steps. The second preset temperature can be a reasonable temperature such as 20 degrees Celsius or 21 degrees Celsius, and is not specifically limited.

[0053] S22: After the first operation, the control device controls the air conditioner to enter the second state, which is the heating mode and maintains the second air outlet state, to heat up the heat exchanger, so that the water droplets evaporate and are sprayed onto the filter screen.

[0054] S23: After the air conditioner has been running in the second state for a second time, the control device controls the air conditioner to standby preset time so that the water droplets can fully soak the dirt.

[0055] This step is to allow the water droplets on the filter to fully soak the dirt, loosening and breaking it down within the droplets. During the soaking process, the air conditioner stops heating and cooling to avoid unnecessary power consumption. The preset time can be a reasonable duration such as 1 minute, 2 minutes, or 3 minutes; no specific limit is specified here.

[0056] S24: The control device controls the air conditioner to re-enter the third state, which is the third air outlet state, to blow off the water droplets on the filter screen.

[0057] S25: After the third time of operation, the control device controls the air conditioner to re-enter the first state, and makes the air conditioner work in a cycle of the first state, the second state and the third state in sequence.

[0058] The air conditioner repeatedly forms water droplets on the filter surface and blows them off, completing the initial cleaning.

[0059] Unlike the previous embodiments, this embodiment also includes:

[0060] S26: Drying filter screen.

[0061] After cleaning the filter screen with water droplets, water residue remains on the screen. If the filter screen is not dried, it will affect the direct use of the air conditioner.

[0062] In this step, the indoor temperature is first determined. If the indoor temperature is higher than a first preset temperature, the air conditioner is controlled by the control device to blow air at its maximum speed to dry the filter. The first preset temperature can be set to a reasonable temperature such as 25 degrees or 26 degrees, and is not limited here. In this embodiment, the first preset temperature is 29 degrees. When drying the filter, the air conditioner continues to blow air for at least 3 minutes to ensure that the filter is completely dry.

[0063] If the indoor temperature is determined to be lower than the first preset temperature, the control device will switch the air conditioner to heating mode and operate it at maximum airflow speed to dry the filter. When the temperature is low, direct airflow would take a long time to dry the filter. To quickly dry the filter, in this step, when the indoor temperature is low, the air conditioner is controlled to heat while simultaneously blowing air; this step aims to quickly dry the filter.

[0064] Please see Figure 3 , Figure 3 This is a flowchart illustrating a third embodiment of the air conditioner filter cleaning method of this application. In another specific embodiment, the cleaning method includes:

[0065] S31: The control device controls the air conditioner to enter the first state, which is the cooling mode and maintains the first air outlet state, so that water droplets condense on the surface of the heat exchanger of the indoor unit of the air conditioner.

[0066] Please refer to S11 for details on this step, which will not be repeated here.

[0067] S32: After the first operation, the control device controls the air conditioner to enter the second state, which is the heating mode and maintains the second air outlet state to heat up the heat exchanger, so that the water droplets evaporate and are sprayed onto the filter screen. At the same time, the control device controls the first suction mechanism to draw in the foaming liquid, which is then foamed by the foaming device and sprayed onto the filter screen.

[0068] Specifically, the method of cleaning the filter screen by forming water droplets is ineffective at cleaning dirt that is not easily soluble in water, such as oil residue. In this embodiment, the second state also includes a control device controlling the first suction mechanism to draw in foaming liquid, which is then foamed by the foaming device and sprayed onto the filter screen. Simultaneously with the formation of water droplets on the filter screen, cleaning foam is generated and sprayed onto it, enhancing the cleaning effect and improving the overall cleaning efficiency of the filter screen.

[0069] The air conditioner filter cleaning method of this embodiment includes: a cleaning liquid container for holding cleaning liquid; a first suction mechanism connected to the cleaning liquid container and a control device for suctioning the cleaning liquid; and a foaming device connected to the first suction mechanism and configured corresponding to the filter screen, wherein the cleaning liquid is suctioned to the foaming device, foamed, and then sprayed onto the filter screen.

[0070] S33: After the second time of operation, the control device controls the air conditioner to enter the third state, which is the third air outlet state, to blow off the water droplets on the filter screen.

[0071] S34: After the third time of operation, the control device controls the air conditioner to re-enter the first state, and makes the air conditioner work in a cycle of the first state, the second state and the third state in sequence.

[0072] Please see Figure 4 , Figure 4 This is a flowchart illustrating the fourth embodiment of the air conditioner filter cleaning method of this application. In another specific embodiment, the cleaning method includes:

[0073] S41: The control device controls the air conditioner to enter the first state, which is the cooling mode and maintains the first air outlet state, so that water droplets condense on the surface of the heat exchanger of the indoor unit of the air conditioner.

[0074] Please refer to S11 for details on this step, which will not be repeated here.

[0075] S42: After the first time of operation, the control device controls the air conditioner to enter the second state, which is the heating mode and maintains the second air outlet state to heat up the heat exchanger, so that the water droplets evaporate and are sprayed onto the filter screen; in response to the humidity testing device testing that the indoor humidity is lower than the preset humidity, the second state also includes: the control device controls the second suction mechanism to suck up the condensate and spray it onto the filter screen.

[0076] Understandably, the cleaning method of this application utilizes temperature changes to liquefy water vapor in the air into water droplets to clean the filter. When the air humidity is low, there is less water vapor in the air, and the amount of water vapor liquefied by temperature changes and sprayed onto the filter is less, resulting in poor cleaning effect. In this embodiment, during filter cleaning, a humidity testing device monitors the indoor humidity in real time. When the indoor humidity is too low and there is little water vapor, while water droplets accumulate on the filter in the second state, a control device simultaneously controls a second suction mechanism to draw condensate and spray it onto the filter, allowing more droplets to accumulate on the filter and improving the cleaning effect.

[0077] S43: After the second time of operation, the control device controls the air conditioner to enter the third state, which is the third air outlet state, to blow off the water droplets on the filter screen.

[0078] S44: After the third time of operation, the control device controls the air conditioner to re-enter the first state, and makes the air conditioner work in a cycle of the first state, the second state and the third state in sequence.

[0079] Furthermore, it is understood that the cleaning methods of the first to fourth embodiments described above can still be combined to obtain new embodiments, and the new embodiments should also be included within the protection scope of the air conditioner filter cleaning method of this application, which will not be repeated again.

[0080] Unlike existing technologies, this application proposes a method for cleaning air conditioner filters. This method involves adjusting the air conditioner's operation to form water droplets on the heat exchanger surface, then spraying these droplets onto the filter screen. The water droplets carry away dirt from the filter screen, and this process is repeated to achieve automatic filter cleaning, eliminating the need for manual cleaning by the user and improving the user experience.

[0081] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or principle transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A method for cleaning an air conditioner filter, characterized in that, The cleaning method includes: The control device controls the air conditioner to be in heating mode so that the indoor temperature reaches the second preset temperature; The control device controls the air conditioner to enter a first state, which is a cooling mode and maintains a first air outlet state; so that water droplets condense on the surface of the heat exchanger of the indoor unit of the air conditioner, and the water droplets are formed by the liquefaction of water vapor in the air upon cooling; in the first air outlet state, the indoor fan of the air conditioner rotates forward; After the first time of operation, the control device controls the air conditioner to enter the second state, which is the heating mode and maintains the second air outlet state to heat up the heat exchanger and make the water droplets evaporate. In the second air outlet state, the internal fan reverses to form a reverse airflow to spray the water droplets evaporated on the surface of the heat exchanger onto the filter screen. At the same time, the water droplets on the heat exchanger are also directly blown off and sprayed onto the filter screen. After the second period of operation, the control device controls the air conditioner to enter the third state, which is the third air outlet state, to blow off the water droplets on the filter screen; in the third air outlet state, the internal fan rotates forward; After the third period of operation, the control device controls the air conditioner to re-enter the first state, and makes the air conditioner work in a cycle of the first state, the second state and the third state in sequence; Wherein, the air outlet speed in the first air outlet state is the minimum air outlet speed of the air conditioner; the air outlet speeds in the second and third air outlet states are the maximum air outlet speeds of the air conditioner.

2. The cleaning method according to claim 1, characterized in that, The air conditioner includes: A cleaning solution container for holding cleaning solution; The first suction mechanism is connected to the cleaning liquid container and the control device, and is used to suction the cleaning liquid; A foaming device is connected to the first suction mechanism and is set corresponding to the filter screen. The cleaning liquid is drawn into the foaming device, foamed, and then sprayed onto the filter screen. The second state of the air conditioner also includes: The control device controls the first suction mechanism to draw in the foaming liquid, which is then foamed by the foaming device and sprayed onto the filter screen.

3. The cleaning method according to claim 1, characterized in that, The air conditioner also includes: A humidity testing device is installed inside the air conditioner and connected to the control device; A condensate receiving container, connected to the condensate pipe of the air conditioner, is used to store the condensate produced by the air conditioner; The second suction mechanism is connected to the condensate receiving container and the control device. The cleaning method further includes: In response to the humidity testing device detecting that the indoor humidity is lower than a preset humidity, the second state further includes: The control device controls the second suction mechanism to draw condensate and spray it onto the filter screen.

4. The cleaning method according to claim 1, characterized in that, After the air conditioner operates in the second state for the second time, the control device controls the air conditioner to standby preset time so that the water droplets can fully soak the dirt.

5. The cleaning method according to any one of claims 1 or 4, characterized in that, Also includes: In response to the temperature being higher than a first preset temperature, the control device controls the air conditioner to blow air at the maximum airflow speed to dry the filter.

6. The cleaning method according to claim 5, characterized in that, Also includes: In response to the temperature being lower than a first preset temperature, the control device controls the air conditioner to enter heating mode and controls the air conditioner to blow air at maximum speed to dry the filter.

7. The cleaning method according to claim 5, characterized in that, The first preset temperature is 29 degrees Celsius.

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