Air conditioner indoor unit, fan dust removal method and device and medium

Abstract

The invention relates to an air conditioner indoor unit, a fan dust removal method and device and a medium. The air conditioner indoor unit comprises a shell, an evaporator, a fan, a water pan, an electrostatic generator, a brush and an external water source, the evaporator, the fan and the water pan are arranged in the shell, the evaporator surrounds the outer side of the fan, the water pan is arranged below the evaporator, the brush is used for cleaning the fan, and the brush can be close to and away from the fan; the electrostatic generator is electrically connected with the brush, so that the brush is electrified; and the water pan and an external water source respectively supply water to the brush through a first water receiving pipe and a second water receiving pipe. The method is applied to the air conditioner indoor unit, when the fan cleaning mode is started, the indoor environment humidity is obtained, the fan is controlled to rotate slowly at the first rotating speed, and the brush is controlled to be close to the fan; judging whether the indoor environment humidity is greater than preset humidity; if yes, controlling the electrostatic generator to start for a first preset duration; if not, the first water receiving pipe / the second water receiving pipe is controlled to be connected for a first preset duration.

Description

Technical Field

[0001] The present application relates to the field of smart electrical appliances, and specifically relates to a method, device and medium for removing dust from an indoor unit and a fan of an air conditioner. Background Art

[0002] Air conditioners not only maintain a comfortable indoor environment but also purify and circulate indoor air. The fan is an essential component in the indoor unit of an air conditioner, transporting cooled or heated air into the room, thereby providing a comfortable environment. During operation, the fan is prone to dust accumulation.

[0003] In the prior art, when performing routine maintenance and cleaning of the air conditioner fan, a worker is required to manually remove the housing of the air conditioner indoor unit and then clean the fan.

[0004] However, since the indoor unit of the air conditioner is usually installed at a higher position indoors, manual cleaning is very inconvenient, which makes daily cleaning of the fan difficult. Summary of the Invention

[0005] In order to solve the above-mentioned problems in the prior art, that is, to facilitate daily cleaning and dust removal of the fan of the air-conditioning indoor unit, the present application provides an air-conditioning indoor unit and fan dust removal method, device and medium.

[0006] In a first aspect, the present application provides an air conditioner indoor unit, comprising a housing, an evaporator, a fan, and a water receiving tray, wherein the evaporator, the fan, and the water receiving tray are disposed inside the housing, the evaporator surrounds the outside of the fan, and the water receiving tray is disposed below the evaporator. The air conditioner indoor unit further comprises an electrostatic generator, a brush, and an external water source, wherein the brush is used to clean the fan and can be moved closer to and farther from the fan.

[0007] The electrostatic generator is electrically connected to the brush to charge the brush;

[0008] The water receiving tray and the external water source supply water to the brush through a first water receiving pipe and a second water receiving pipe respectively, so as to wet the brush.

[0009] In a possible implementation, the brush includes a brush head and a brush handle, the brush head is used to clean the fan, and the brush handle is rotatably connected to the housing to move the brush head closer to and away from the fan.

[0010] In a possible implementation, the brush handle is a hollow structure, wherein:

[0011] The bottom end of the brush handle is connected to the water receiving tray via a first water receiving pipe, so that water in the water receiving tray enters the brush handle through the first water receiving pipe to wet the brush head;

[0012] The bottom end of the brush handle is connected to the external water source through a second water receiving pipe, so that water from the external water source enters the brush handle from the second water receiving pipe to wet the brush head.

[0013] In a possible implementation, the brush is a telescopic structure, comprising a brush head and a brush barrel sleeved outside the brush head, the brush head is used to clean the fan, and the bottom of the brush barrel is fixedly connected to the housing.

[0014] In a possible implementation, the bottom end of the brush barrel is provided with two through holes, wherein:

[0015] One end of the first water receiving pipe is connected to the water receiving tray, and the other end of the first water receiving pipe is connected to the bottom end of the brush head through one of the through holes, so that the water in the water receiving tray enters the brush head through the first water receiving pipe;

[0016] One end of the second water receiving pipe is connected to the external water source, and the other end of the second water receiving pipe is connected to the bottom end of the brush head through another through hole, so that water from the external water source enters the brush head from the second water receiving pipe.

[0017] In a second aspect, the present application provides a fan dust removal method, which is applied to the air conditioner indoor unit as described above, and the method comprises:

[0018] When the air conditioner indoor unit starts the fan cleaning mode, the indoor environmental humidity is obtained, the fan is controlled to rotate slowly at a first speed, and the brush is controlled to approach the fan;

[0019] Determining whether the indoor environmental humidity is greater than a preset humidity;

[0020] If so, controlling the electrostatic generator to start for a first preset time period so that the brush electrostatically attracts dust attached to the fan;

[0021] If not, the first water receiving pipe / the second water receiving pipe is controlled to be connected for a first preset time period so that the wetted brush can brush off the dust attached to the fan.

[0022] In a possible implementation, after controlling the electrostatic generator to start for a first preset time period, the method further includes:

[0023] Turning off the electrostatic generator, controlling the brush to move away from the fan, and controlling the first water receiving pipe / the second water receiving pipe to be connected for a second preset time period to flush away dust on the brush, wherein the second preset time period is greater than or equal to the first preset time period, and the water flow in the first water receiving pipe / the second water receiving pipe during the second preset time period is greater than the water flow in the first water receiving pipe / the second water receiving pipe during the first preset time period;

[0024] After controlling the first water connection pipe / the second water connection pipe to be connected for a first preset time, the method further includes:

[0025] The brush is controlled to be away from the fan, and the first water receiving pipe is continuously controlled to be connected for a second preset time period to wash away dust on the brush.

[0026] In a possible implementation, controlling the connection between the first water receiving pipe and the second water receiving pipe includes:

[0027] Obtaining the amount of water in the water receiving tray and determining whether the amount of water is equal to 0;

[0028] If yes, then control the second water pipe to be connected;

[0029] If not, the first water receiving pipe is controlled to be connected, and when the remaining water amount in the water receiving tray is equal to 0, the first water receiving pipe is closed, and the second water receiving pipe is controlled to be connected.

[0030] In a possible implementation, after turning off the electrostatic generator and controlling the first water connection pipe / the second water connection pipe to be connected for a second preset time, the method further includes:

[0031] A second rotational speed of the fan at a moment before the fan cleaning mode is started is acquired, and the fan is controlled to rotate at the second rotational speed, wherein the second rotational speed is greater than the first rotational speed.

[0032] In a possible implementation, after continuing to control the first water connection pipe / water connection pipe to be connected for a second preset time period, the method further includes:

[0033] Obtaining the second speed of the fan and the operating mode of the air conditioner indoor unit at a moment before the fan cleaning mode is started, obtaining the instantaneous surface humidity of the fan, and calculating the ratio of the instantaneous surface humidity to the indoor ambient humidity;

[0034] If the operating mode is the heating mode, the fan is controlled to rotate at a third speed, and until the ratio is less than a preset ratio, the fan is controlled to rotate at a second speed, wherein the third speed is between the first speed and the second speed, and the second speed is greater than the first speed;

[0035] If the operation mode is the cooling mode, the indoor ambient temperature is obtained, and the operation of the fan is controlled according to the indoor ambient temperature.

[0036] In a possible implementation, controlling the operation of the fan according to the indoor ambient temperature includes:

[0037] When the indoor ambient temperature is greater than a preset temperature, the fan is controlled to rotate at a third speed, and when the ratio is less than a preset ratio, the fan is controlled to rotate at a second speed;

[0038] When the indoor ambient temperature is less than or equal to a preset temperature, the air-conditioning indoor unit is controlled to operate in a heating mode, and the fan is controlled to stop rotating. When the ratio is less than a preset ratio, the air-conditioning indoor unit is controlled to operate in a cooling mode, and the fan is controlled to rotate at a second speed.

[0039] In a third aspect, the present application provides a fan dust removal device, which is applied to the air conditioner indoor unit as described above, and the device includes:

[0040] a first processing module, configured to obtain indoor environmental humidity, control the fan to rotate at a first speed, and control the brush to approach the fan when the air conditioner indoor unit starts a fan cleaning mode;

[0041] a second processing module, configured to control the electrostatic generator to start for a first preset time if the indoor ambient humidity is greater than a preset humidity, so that the brush electrostatically attracts dust attached to the fan;

[0042] The third processing module is used to control the first water receiving pipe / the second water receiving pipe to be connected for a first preset time period if the indoor environmental humidity is less than or equal to a preset humidity, so that the wetted brush can brush off the dust attached to the fan.

[0043] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the fan dust removal method described above when executed by a processor.

[0044] The air conditioner indoor unit provided in the present application includes a body, an evaporator, a fan, a water collecting tray, an electrostatic generator, a brush and an external water source, wherein the evaporator, fan and water collecting tray are arranged inside the shell, the evaporator surrounds the outside of the fan, and the water collecting tray is arranged below the evaporator, wherein the brush is used to clean the fan, and the brush can be close to and away from the fan; the electrostatic generator is electrically connected to the brush to charge the brush; the water collecting tray and the external water source supply water to the brush through a first water receiving pipe and a second water receiving pipe respectively to wet the brush. The fan dust removal method, device and medium provided in the present application obtain the indoor environmental humidity when the air-conditioning indoor unit starts the fan cleaning mode, and control the fan to rotate slowly at a first speed, and control the brush to approach the fan; determine whether the indoor environmental humidity is greater than the preset humidity; if so, control the electrostatic generator to start for a first preset time so that the brush electrostatically attracts dust attached to the fan; if not, control the first water inlet pipe / second water inlet pipe to be connected for a first preset time so that the wetted brush can brush off the dust attached to the fan.

[0045] The air-conditioning indoor unit provided in the present application is based on the existing technology. By adding an electrostatic generator and a water connection pipe, the fan has two parallel schemes of electrostatic dust removal and water washing dust removal. Among them, the water washing dust removal scheme can also give priority to using the water generated by the operation of the evaporator in the water collection tray to realize the integrated utilization of resources. Specifically, when the indoor environment humidity is high, the electrostatic generator is used to supply power to the brush, so that the brush electrostatically attracts the dust attached to the fan. When the indoor environment humidity is low, it is difficult to remove the dust by electrostatic dust removal due to the strong electrostatic attraction between the dust attached to the fan and the fan. At this time, the water washing dust removal scheme is preferred. The water collection tray or an external water source supplies water to the brush through the water connection pipe, so that the wetted brush brushes off the dust attached to the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0047] Figure 1A A schematic diagram of the internal structure of an air-conditioning indoor unit provided in an embodiment of the present application from one viewing angle;

[0048] Figure 1B A schematic diagram of the internal structure of an air-conditioning indoor unit provided in an embodiment of the present application from another perspective;

[0049] Figure 1C for Figure 1B Schematic diagram of the structure of the medium brush;

[0050] Figure 2Flowchart 1 of a fan dust removal method provided in an embodiment of the present application;

[0051] Figure 3 A fan dust removal method according to an embodiment of the present invention Figure 2 ;

[0052] Figure 4 A fan dust removal method according to an embodiment of the present invention Figure 3 ;

[0053] Figure 5 A schematic structural diagram of a fan dust removal device provided in an embodiment of the present invention.

[0054] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0055] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] The terms "first," "second," "third," "fourth," and so forth (if any) in the description and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention described herein can, for example, be implemented in sequences other than those illustrated or described herein.

[0057] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0058] With the advancement of air conditioning technology and the improvement of people's living standards, people are using air conditioners more and more frequently. Air conditioners can be divided into various types based on their product form, such as ceiling-mounted air conditioners, floor-standing air conditioners, and wall-mounted air conditioners. The indoor units of ceiling-mounted and wall-mounted air conditioners are usually installed on or near the ceiling.

[0059] However, after the air conditioner has been used for a long time, dust will accumulate on the fan inside the air conditioner indoor unit. Since the air conditioner indoor unit is installed on the ceiling, daily cleaning of the fan is very inconvenient.

[0060] Therefore, the present application proposes an air-conditioning indoor unit and a method for removing dust from the fan of the air-conditioning indoor unit. The method mainly upgrades the fan cleaning mode from the traditional brush-only cleaning method to electrostatic dust removal and water-washing dust removal by adding an electrostatic generator, a water pipe, and an external water source as a backup water source on the basis of the existing air-conditioning structure, thereby facilitating the daily cleaning of the fan. It is particularly noted that the water-washing dust removal scheme preferentially uses the water generated during the operation of the evaporator in the water receiving tray, which is conducive to the secondary utilization of water resources. The dust removal method to be adopted is determined by the indoor environmental humidity. When the indoor environmental humidity is high, the electrostatic dust removal scheme is adopted; when the indoor environmental humidity is low, the electrostatic attraction between the dust attached to the fan and the fan is strong, so the water-washing dust removal scheme is preferred.

[0061] The air conditioner indoor unit provided in the embodiment of the present application is described below with reference to FIG1 .

[0062] Figure 1A and Figure 1B These are schematic diagrams of the internal structure of an air-conditioning indoor unit provided in the embodiments of the present application. Figure 1A and Figure 1B As shown, the air conditioner indoor unit 10 includes a housing 101, an evaporator 102, a fan 103, a water receiving tray 104, an electrostatic generator, a brush 105, and an external water source. The evaporator 102, the fan 103, and the water receiving tray 104 are disposed within the housing 101. The evaporator 102 surrounds the fan 103, and the water receiving tray 104 is disposed below the evaporator 102. As is well known to those skilled in the art, an electrostatic generator, also known as an electrostatic machine, is an electromechanical generator that can be used to generate static electricity, and this embodiment will not be described in detail.

[0063] In this embodiment, the air outlet is located in front of the evaporator 102. To facilitate air flow at the air outlet, the evaporator 102 is mainly arranged around the lower rear side of the fan 103. In this way, the top of the air conditioner indoor unit can be installed close to the wall to prevent a large amount of dust from accumulating on the top of the machine. Of course, the evaporator 102 can also be arranged in a circle around the fan 103, and this application does not limit this.

[0064] The brush 105 is used to clean the fan 103. The brush 105 can move closer to or further away from the fan 103. The electrostatic generator is electrically connected to the brush 105 to charge the brush 105. The charged brush 105 can electrostatically attract dust attached to the fan 103, thereby cleaning the fan blades. Figure 1BAs shown, the brush 105 is arranged on the front side below the fan 103. Similarly, the brush 105 can also be arranged above the fan 103 or on the rear side of the fan 103. This application also does not impose any restrictions on this.

[0065] In order to facilitate the description of the internal structure and connection relationship of the brush 105, this embodiment briefly describes this. Figure 1C As shown, the water receiving tray 104 can supply water to the brush 105 through the first water receiving pipe 106, and the external water source can supply water to the brush 105 through the second water receiving pipe 107. In this way, the brush 105 can be wetted, and the wetted brush 105 can brush off the dust attached to the fan 103.

[0066] As mentioned above, the brush 105 can move closer to and further away from the fan 103 to clean and remove dust from the fan 103. In this embodiment, two brush structures are proposed to achieve the above technical means. One structure is a rotating connection structure, and the brush 105 moves closer to and further away from the fan 103 by rotating. It can rotate on a horizontal plane or on other planes. As long as it can move closer to and further away from the fan 103, any rotating connection structure should be considered to be within the scope of patent protection of this application; the other structure is a sleeve telescopic structure, and the brush 105 moves closer to and further away from the fan 103 by telescoping. The above two brush structures are relatively common structures in the prior art, and this application will not elaborate on them in detail. In this embodiment, only a brief description of the connection relationship between the brush 105, the water receiving tray 104, and the external water source is made:

[0067] Optionally, the brush 105 includes a brush head 1051 and a brush handle 1052 . The brush head 1051 is used to clean the fan 103 , and the brush handle 1052 is rotatably connected to the housing 101 to enable the brush head 1051 to move closer to and away from the fan 103 .

[0068] Optionally, the brush handle 1052 is a hollow structure, wherein the bottom end of the brush handle 1052 is connected to the water receiving tray 104 through the first water receiving pipe 106, so that the water in the water receiving tray 104 enters the brush handle 1052 from the first water receiving pipe 106 and wets the brush head 1051; the bottom end of the brush handle 1052 is connected to an external water source through the second water receiving pipe 107, so that the water from the external water source enters the brush handle 1052 from the second water receiving pipe 107 and wets the brush head 1051.

[0069] Optionally, the brush 105 is a telescopic structure, and the brush 105 includes a brush head 1051 and a brush tube sleeved on the outside of the brush head 1051. The brush head 1051 is used to clean the fan 103, and the bottom of the brush tube is fixedly connected to the shell 101.

[0070] Optionally, two through holes are provided at the bottom of the brush barrel, wherein one end of the first water receiving pipe 106 is connected to the water receiving tray 104, and the other end of the first water receiving pipe 106 is connected to the bottom end of the brush head 1051 through one of the through holes, so that the water in the water receiving tray 104 enters the brush head 1051 from the first water receiving pipe 106; one end of the second water receiving pipe 107 is connected to an external water source, and the other end of the second water receiving pipe 107 is connected to the bottom end of the brush head 1051 through another through hole, so that the water from the external water source enters the brush head 1051 from the second water receiving pipe 107.

[0071] Based on the mutual cooperation between the above components, not only can the brush be moved closer to or away from the fan through the special structure of the brush, but the dust attached to the fan can also be cleaned by charging the brush or soaking it in water.

[0072] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above technical problems. The following specific embodiments can be implemented independently or in combination with each other. For the same or similar concepts or processes, some embodiments may not be described in detail.

[0073] Figure 2 Flowchart 1 of a fan dust removal method provided in an embodiment of the present application. Figure 2 As shown, the method includes:

[0074] S201. When the air conditioner indoor unit starts a fan cleaning mode, obtain the indoor ambient humidity, control the fan to rotate slowly at a first speed, and control the brush to approach the fan.

[0075] In the above solution, once the indoor unit fan cleaning mode is activated, the fan is controlled to rotate at a low speed so that the brush close to the fan can clean dust from all parts of the fan. The indoor humidity is directly related to the strength of the electrostatic attraction between dust adhering to the fan and the fan. Therefore, in this embodiment, by detecting the ambient humidity, the strength of the electrostatic attraction can be roughly inferred, thereby determining whether to use water washing or electrostatic dust removal.

[0076] During the specific implementation process, the first speed can be set to different values ​​according to the detected indoor environmental humidity, or it can be set to different values ​​according to the fan speed just before starting the fan cleaning mode, or it can be a relatively fixed value. For example, the first speed can be 20r / min or 25r / min.

[0077] S202: Determine whether the indoor humidity is greater than a preset humidity.

[0078] In this step, in order to facilitate the measurement of the measured indoor environmental humidity, the numerical value is determined by a preset humidity threshold in this embodiment. If the indoor environmental humidity is greater than the preset humidity, it means that the indoor humidity is relatively high in this situation, and the electrostatic attraction between the dust attached to the fan and the fan is relatively small; if the indoor environmental humidity is not greater than the preset humidity, it means that the indoor humidity is relatively low in this situation, and the electrostatic attraction between the dust attached to the fan and the fan is relatively large.

[0079] In a specific implementation, the preset humidity can be 30% or 50%. This embodiment does not impose any particular limitation on the value of the preset humidity. For example, if the preset humidity is 30%, and the measured indoor humidity is 40%, it is determined that the indoor humidity is greater than the preset humidity, and the electrostatic attraction between the dust and the fan is weak. If the measured indoor humidity is 20%, it is determined that the indoor humidity is not greater than the preset humidity, and the electrostatic attraction between the dust and the fan is strong.

[0080] S203: If yes, control the electrostatic generator to start for a first preset time, so that the brush can electrostatically attract dust attached to the fan.

[0081] In the above scheme, if it is determined that the indoor environmental humidity is greater than the preset threshold, it can be determined that the electrostatic attraction between the dust attached to the fan and the fan is relatively small. At this time, the dust attached to the fan can be electrostatically attracted by the charged brush. As long as the electrostatic attraction between the dust and the brush is greater than the electrostatic attraction between the dust and the fan, the dust on the fan will be firmly attached to the brush.

[0082] In the specific implementation process, the first preset time length can be pre-set by the user using the air-conditioning indoor unit, or it can be built-in when the air-conditioning indoor unit leaves the factory. Secondly, the first preset time length can be 3 minutes, or 5 minutes, or it can be determined based on the difference between the indoor environment humidity and the preset humidity. The greater the difference between the two, the longer the first preset time length can be.

[0083] S204: If not, control the first water receiving pipe / the second water receiving pipe to be connected for a first preset time period so that the wetted brush can brush away dust attached to the fan.

[0084] In the above scheme, if it is determined that the indoor environmental humidity is lower than the preset threshold, it can be determined that the electrostatic attraction between the dust attached to the fan and the fan is relatively large. At this time, if the electrostatic dust removal method is still adopted, it is necessary to provide a large static electricity to the brush to achieve fan dust removal, which wastes energy. Therefore, the water washing dust removal scheme is preferred at this time.

[0085] As mentioned above, when using water washing and dust removal to clean the fan, the water in the water receiving tray can be preferably used. In the specific implementation process, the water flow in the first water receiving pipe or the amount of water in the water receiving tray can be used to determine whether there is water in the water receiving tray, and then determine whether to connect the first water receiving pipe or the second water receiving pipe. For example, the amount of water in the water receiving tray can be obtained, and it can be determined whether the water amount is equal to 0; if so, the second water receiving pipe is controlled to be connected; if not, the first water receiving pipe is controlled to be connected, and when the remaining water amount in the water receiving tray is equal to 0, the first water receiving pipe is closed, and the second water receiving pipe is controlled to be connected.

[0086] In the embodiment of the present application, the choice of water-washing dust removal or electrostatic dust removal is determined based on the indoor humidity, so that the dust removal method can be adapted to the ambient humidity. When the indoor humidity is high, the electrostatic generator supplies power to the brush, causing the brush to electrostatically attract dust attached to the fan. When the indoor humidity is low, the electrostatic attraction between the dust attached to the fan and the fan is strong, making it difficult to remove the dust through electrostatic dust removal. In this case, a water-washing dust removal solution is preferred. A water receiving tray or an external water source supplies water to the brush through a water pipe, allowing the wetted brush to brush away the dust attached to the fan.

[0087] The following combination Figure 3 The specific embodiments illustrate the implementation process of cleaning the brush after electrostatic dust removal and restoring the normal operation of the fan in the fan dust removal method of the present application.

[0088] Figure 3 A fan dust removal method according to an embodiment of the present invention Figure 2 .like Figure 3 As shown, the method includes:

[0089] S301. Turn off the electrostatic generator, control the brush to move away from the fan, and control the first water receiving pipe / the second water receiving pipe to be connected for a second preset time to wash away dust on the brush, wherein the second preset time is greater than or equal to the first preset time, and the water flow in the first water receiving pipe / the second water receiving pipe during the second preset time is greater than the water flow in the first water receiving pipe / the second water receiving pipe during the first preset time.

[0090] In this step, after electrostatic dust removal is complete, the dust-attached brush is moved away from the fan, and the electrostatic generator is turned off. The first / second water inlet pipe is then connected, and water from the water tray / external water source is used to flush away dust from the brush. Because the water flow rate during this stage is greater than during the fan-washing dust removal phase, the greater impact of the water flow effectively washes away dust from the brush.

[0091] In the specific implementation process, the second preset time length can be equal to the first preset time length, or greater than the first preset time length to ensure that the brush is completely rinsed clean. For example, if the first preset time length is 3 minutes, the second preset time length can be 3 minutes or 4 minutes; if the first preset time length is 5 minutes, the second preset time length can be 5 minutes or 7 minutes; of course, the second preset time length can also be determined according to the difference between the indoor ambient humidity and the preset humidity. The greater the difference between the two, the greater the second preset time length can be, but the second preset time length should be greater than or equal to the first preset time length.

[0092] S302 : Acquire a second rotational speed of the fan immediately before the fan cleaning mode is started, and control the fan to rotate at the second rotational speed, wherein the second rotational speed is greater than the first rotational speed.

[0093] In the above scheme, since this embodiment is aimed at the electrostatic dust removal scheme, there will be no water stains remaining on the fan. Therefore, after the brush is away from the fan, the fan can be controlled to directly restore to the original speed. In this embodiment, the second speed is the fan speed at the moment before the cleaning mode is started, or it can be the average fan speed before the cleaning mode is started, or it can be a fixed value. For example, when the first speed is 20r / min, the second speed can be 100r / min; when the first speed is 25r / min, the second speed can be 200r / min.

[0094] In the embodiment of the present application, after the electrostatic dust removal is completed, the first water inlet pipe / the second water inlet pipe is connected to flush the dust on the brush, and the fan is controlled to return to the original speed so that the air conditioner indoor unit can operate normally in the heating / cooling mode.

[0095] The following combination Figure 4 The specific embodiments illustrate the implementation process of cleaning the brush after water washing and dust removal and restoring the normal operation of the fan in the fan dust removal method of the present application.

[0096] Figure 4 A fan dust removal method according to an embodiment of the present invention Figure 3 .like Figure 4 As shown, the method includes:

[0097] S401. Control the brush to move away from the fan, and continue to control the first water receiving pipe / the first water receiving pipe to be connected for a second preset time to wash away dust on the brush, wherein the second preset time is greater than or equal to the first preset time, and the water flow in the first water receiving pipe / the second water receiving pipe during the second preset time is greater than the water flow in the first water receiving pipe / the second water receiving pipe during the first preset time.

[0098] In the above solution, after the water washing and dust removal is completed, the dust-attached brush is controlled to move away from the fan to prevent the water used to rinse the brush from splashing onto the fan. At this time, the brush is carrying a lot of dust, and it is necessary to continue to connect the first water inlet pipe / second water inlet pipe to use water from the water receiving tray / external water source to rinse off the dust on the brush.

[0099] S402: Obtain the second speed of the fan and the operation mode of the air conditioner indoor unit immediately before the fan cleaning mode is started, obtain the instantaneous surface humidity of the fan, and calculate the ratio of the instantaneous surface humidity to the indoor ambient humidity.

[0100] In this step, since the wet brush from the water-washing dust removal process will leave water stains on the fan, the water stains on the fan need to be treated to prevent the fan from blowing water into the room after increasing its speed. In this embodiment, the residual water stains on the fan are roughly determined by the humidity on the fan surface. If the humidity is high, that is, the ratio of the instantaneous surface humidity to the indoor ambient humidity is large, it means that there are many water stains remaining on the fan; if the humidity is low, that is, the ratio of the instantaneous surface humidity to the indoor ambient humidity is low, it means that the water stains remaining on the fan are small and can be ignored. For example, if the indoor ambient humidity is initially detected to be 40%, and the instantaneous surface humidity of the fan is detected to be 80% after the fan dust removal is completed, the ratio is 2.

[0101] In a specific implementation process, the instantaneous surface humidity of the fan can be measured by a humidity sensor. The humidity sensor can be installed on the fan or on a component / housing located between the fan and the evaporator.

[0102] There are two common ways to deal with water stains: drying and air drying. In this embodiment, after fan dust removal, if the air conditioner indoor unit returns to heating mode, the fan can be dried directly because the evaporator is in a hot state in heating mode. If the air conditioner indoor unit returns to cooling mode, it is necessary to determine whether to dry the fan or air dry the fan based on the current cooling situation. The specific determination steps are described below.

[0103] S403. If the operation mode is heating mode, the fan is controlled to rotate at a third speed until the ratio is less than a preset ratio, and the fan is controlled to rotate at a second speed, wherein the third speed is between the first speed and the second speed, and the second speed is greater than the first speed.

[0104] In the above scheme, after the water washing and dust removal is completed, some water stains will remain on the fan, so the fan cannot directly return to its original speed. It needs to be maintained at a relatively low speed to avoid the fan blowing water. This speed is between the dust removal speed mentioned above and the original speed. For example, when the first speed is 20r / min and the second speed is 100r / min, the third speed can be 60r / min; when the first speed is 25r / min and the second speed is 200r / min, the third speed can be 70r / min.

[0105] Since the current operation is in heating mode, the fan can be dried at the same time. Therefore, as long as the fan surface humidity drops to a certain level, the fan can be controlled to return to its original speed before the cleaning mode, so that the indoor air conditioner can return to normal heating mode. In this embodiment, the fan surface moisture content is determined by comparing the ratio with the preset ratio. When the calculated ratio is less than the preset ratio, it is considered that the fan surface moisture has been basically evaporated and normal heating can be resumed, that is, the fan can be restored to the second speed. For example, the preset ratio can be 1.1 or 1.5. As mentioned above, the indoor ambient humidity is initially detected to be 40%, and after the fan dust removal is completed, the instantaneous surface humidity of the fan is detected to be 80%. The calculated ratio is 2. If the preset ratio is 1.1, then the ratio is greater than the preset ratio, and the fan should continue to be controlled to maintain the relatively low third speed. Only when the ratio is greater than 1.1 is the fan controlled to rotate at the relatively high second speed.

[0106] S404: If the operating mode is cooling mode, obtain the indoor ambient temperature.

[0107] In this step, if the required cooling capacity is low in heating mode, cooling can be sacrificed and the remaining water stains on the fan can be quickly dried in heating mode before resuming cooling. If the required cooling capacity is high, cooling should be prioritized, and only cold air can be used to slowly dry the fan. In this embodiment, the required cooling capacity is determined by detecting the indoor ambient temperature. A higher indoor ambient temperature indicates a higher cooling capacity required; a lower indoor ambient temperature indicates a lower cooling capacity required.

[0108] S405: When the indoor ambient temperature is greater than the preset temperature, the fan is controlled to rotate at the third speed, and when the ratio is less than the preset ratio, the fan is controlled to rotate at the second speed.

[0109] In the above scheme, if the detected indoor ambient temperature exceeds the preset temperature, it means that the cooling capacity required in the current situation is large, and cooling can only be prioritized. At this time, the fan can only be controlled to rotate at a relatively low third speed, and the fan is blown dry by cold air during the cooling process. The fan is controlled to rotate at a relatively high second speed until the above preset conditions are met.

[0110] S406. When the indoor ambient temperature is less than or equal to the preset temperature, the air conditioner indoor unit is controlled to operate in heating mode and the fan is controlled to stop rotating. When the ratio is less than the preset ratio, the air conditioner indoor unit is controlled to operate in cooling mode and the fan is controlled to rotate at a second speed.

[0111] In this step, if the detected indoor ambient temperature does not exceed the preset temperature, it means that the required cooling capacity in the current situation is small. At this time, cooling can be sacrificed for a short period of time. During this period, the thermal state of the evaporator in the heating mode is used to quickly dry the fan. Until the above preset conditions are met, the air conditioner indoor unit is controlled to switch from heating mode to cooling mode, and the fan is controlled to start and rotate at the second speed.

[0112] In a specific implementation, the preset temperature can be a temperature preset by the user or a temperature set by the air conditioner when it leaves the factory. For example, the preset temperature can be 26°C or 30°C. If the indoor ambient temperature is detected to be 25°C, step S406 can be executed; if the indoor ambient temperature is detected to be 32°C, only step S405 can be executed.

[0113] In an embodiment of the present application, after the water washing and dust removal is completed, the dust on the brush is flushed away by connecting the first water inlet pipe / the second water inlet pipe. At the same time, the fan drying mode or the fan air drying mode is determined according to the operating mode of the air-conditioning indoor unit before the fan cleaning mode is executed. It is worth noting that in the cooling mode, it is necessary to further determine which drying method to adopt based on the indoor ambient temperature.

[0114] In summary, the fan dust removal method provided by the embodiments of the present application, based on the existing air conditioning structure, upgrades the fan cleaning mode from the traditional brush-only cleaning method to electrostatic dust removal and water-washing dust removal by adding an electrostatic generator, a water pipe, and an external water source as a backup water source. It is particularly noted that the water-washing dust removal method preferentially uses the water generated during the operation of the evaporator in the water receiving tray, which is conducive to the secondary utilization of water resources. In this way, the dust removal method to be adopted is determined by the indoor ambient humidity. When the indoor ambient humidity is high, the electrostatic dust removal method is adopted; when the indoor ambient humidity is low, the water-washing dust removal method is preferred because the electrostatic attraction between the dust attached to the fan and the fan is strong.

[0115] Figure 5 A schematic diagram of the structure of a fan dust removal device provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, the fan dust removal device is applied to the air conditioner indoor unit provided in the above embodiment. The fan dust removal device may include various functional modules for implementing the above fan dust removal method. Any functional module can be implemented by software / or hardware.

[0116] For example, the fan dust removal device may include: a first processing module 501, a second processing module 502 and a third processing module 503;

[0117] The first processing module 501 is used to obtain the indoor humidity when the air conditioner indoor unit starts the fan cleaning mode, and control the fan to rotate at a first speed and control the brush to approach the fan;

[0118] The second processing module 502 is configured to control the electrostatic generator to start for a first preset time period if the indoor humidity is greater than a preset humidity, so that the brush electrostatically attracts dust attached to the fan;

[0119] The third processing module 503 is configured to control the first water inlet pipe / the second water inlet pipe to be connected for a first preset time period if the indoor humidity is less than or equal to a preset humidity, so that the wetted brush can brush away dust attached to the fan.

[0120] Optionally, the second processing module 502 can also be used to control the electrostatic generator to start for a first preset time, then turn off the electrostatic generator, control the brush to move away from the fan, and control the first water pipe / second water pipe to be connected for a second preset time to wash away the dust on the brush, wherein the second preset time is greater than or equal to the first preset time, and the water flow in the first water pipe / second water pipe during the second preset time is greater than the water flow in the first water pipe / second water pipe during the first preset time.

[0121] Optionally, the second processing module 502 can also be specifically used to: turn off the electrostatic generator, control the first water inlet pipe / second water inlet pipe to be connected for a second preset time, obtain the second speed of the fan before the fan cleaning mode is started, and control the fan to rotate at the second speed, wherein the second speed is greater than the first speed.

[0122] Optionally, the third processing module 503 can also be used to control the brush to stay away from the fan after the first water receiving pipe / second water receiving pipe is connected for a first preset time, and continue to control the first water receiving pipe / second water receiving pipe to be connected for a second preset time to wash away dust on the brush.

[0123] Optionally, the third processing module 503 can also be specifically used to: obtain the amount of water in the water receiving tray and determine whether the water amount is equal to 0; if so, control the second water receiving pipe to be connected; if not, control the first water receiving pipe to be connected, and when the remaining water amount in the water receiving tray is equal to 0, close the first water receiving pipe and control the second water receiving pipe to be connected.

[0124] Optionally, the third processing module 503 can also be used to continue to control the first water connection pipe / water connection pipe to be connected for a second preset time, obtain the second speed of the fan and the operating mode of the air-conditioning indoor unit at the moment before the fan cleaning mode is started, obtain the instantaneous surface humidity of the fan, and calculate the ratio of the instantaneous surface humidity to the indoor ambient humidity; if the operating mode is heating mode, control the fan to rotate at a third speed until the ratio is less than the preset ratio, and then control the fan to rotate at the second speed, wherein the third speed is between the first speed and the second speed, and the second speed is greater than the first speed; if the operating mode is cooling mode, obtain the indoor ambient temperature, and control the operation of the fan according to the indoor ambient temperature.

[0125] Optionally, the third processing module 503 can also be specifically used to: when the indoor ambient temperature is greater than the preset temperature, control the fan to rotate at a third speed, until the ratio is less than the preset ratio, then control the fan to rotate at the second speed; when the indoor ambient temperature is less than or equal to the preset temperature, control the air-conditioning indoor unit to operate in heating mode, and control the fan to stop rotating, until the ratio is less than the preset ratio, then control the air-conditioning indoor unit to operate in cooling mode, and control the fan to rotate at the second speed.

[0126] The fan dust removal device is used to implement the technical solution provided by the aforementioned fan dust removal method embodiment. Its implementation principle and technical effects are similar to those in the aforementioned method embodiment and will not be repeated here.

[0127] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the fan dust removal method described above is implemented.

[0128] The computer-readable storage medium mentioned above can be implemented by any type of volatile or non-volatile memory device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. The computer-readable storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0129] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0130] The division of units described above is merely a logical functional division. In actual implementation, other divisions may be employed. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Furthermore, any coupling or direct coupling or communication connection shown or discussed between units may be an indirect coupling or communication connection via an interface, device, or unit, and may be electrical, mechanical, or other.

[0131] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0132] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0133] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0134] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0135] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the scope of protection of the present application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An air conditioner indoor unit, comprising a housing, an evaporator, a fan, and a water receiving tray, wherein the evaporator, the fan, and the water receiving tray are arranged inside the housing, the evaporator surrounds the outside of the fan, and the water receiving tray is arranged below the evaporator, characterized in that: The air conditioner indoor unit further comprises an electrostatic generator, a brush and an external water source, wherein the brush is used to clean the fan, and the brush can be moved close to and away from the fan; The electrostatic generator is electrically connected to the brush to charge the brush; The water receiving tray and the external water source supply water to the brush through a first water receiving pipe and a second water receiving pipe respectively, so as to wet the brush.

2. The air conditioner indoor unit according to claim 1, characterized in that: The brush comprises a brush head and a brush handle, wherein the brush head is used for cleaning the fan, and the brush handle is rotatably connected to the housing so as to make the brush head approach and move away from the fan.

3. The air conditioner indoor unit according to claim 2, characterized in that: The brush handle is a hollow structure, wherein The bottom end of the brush handle is connected to the water receiving tray via a first water receiving pipe, so that water in the water receiving tray enters the brush handle through the first water receiving pipe to wet the brush head; The bottom end of the brush handle is connected to the external water source through a second water receiving pipe, so that water from the external water source enters the brush handle from the second water receiving pipe to wet the brush head.

4. The air conditioner indoor unit according to claim 1, characterized in that: The brush is a telescopic structure, comprising a brush head and a brush barrel sleeved on the outside of the brush head. The brush head is used to clean the fan, and the bottom of the brush barrel is fixedly connected to the housing.

5. The air conditioner indoor unit according to claim 4, characterized in that: The bottom end of the brush barrel is provided with two through holes, wherein: One end of the first water receiving pipe is connected to the water receiving tray, and the other end of the first water receiving pipe is connected to the bottom end of the brush head through one of the through holes, so that the water in the water receiving tray enters the brush head through the first water receiving pipe; One end of the second water receiving pipe is connected to the external water source, and the other end of the second water receiving pipe is connected to the bottom end of the brush head through another through hole, so that water from the external water source enters the brush head from the second water receiving pipe.

6. A fan dust removal method, characterized in that: Applied to an air conditioner indoor unit according to any one of claims 1 to 5, the method comprises: When the air conditioner indoor unit starts the fan cleaning mode, the indoor environmental humidity is obtained, the fan is controlled to rotate slowly at a first speed, and the brush is controlled to approach the fan; Determining whether the indoor environmental humidity is greater than a preset humidity; If so, controlling the electrostatic generator to start for a first preset time period so that the brush electrostatically attracts dust attached to the fan; If not, the first water receiving pipe / the second water receiving pipe is controlled to be connected for a first preset time period so that the wetted brush can brush off the dust attached to the fan.

7. The method according to claim 6, characterized in that After controlling the electrostatic generator to start for the first preset time, the method further includes: Turning off the electrostatic generator, controlling the brush to move away from the fan, and controlling the first water receiving pipe / the second water receiving pipe to be connected for a second preset time period to flush away dust on the brush, wherein the second preset time period is greater than or equal to the first preset time period, and the water flow in the first water receiving pipe / the second water receiving pipe during the second preset time period is greater than the water flow in the first water receiving pipe / the second water receiving pipe during the first preset time period; After controlling the first water connection pipe / the second water connection pipe to be connected for a first preset time, the method further includes: The brush is controlled to be away from the fan, and the first water receiving pipe is continuously controlled to be connected for a second preset time period to wash away dust on the brush.

8. The method according to claim 7, characterized in that The controlling the connection between the first water receiving pipe and the second water receiving pipe includes: Obtaining the amount of water in the water receiving tray and determining whether the amount of water is equal to 0; If yes, then control the second water pipe to be connected; If not, the first water receiving pipe is controlled to be connected, and when the remaining water amount in the water receiving tray is equal to 0, the first water receiving pipe is closed, and the second water receiving pipe is controlled to be connected.

9. The method according to claim 8, characterized in that After turning off the electrostatic generator and controlling the first water receiving pipe / the second water receiving pipe to be connected for a second preset time, the method further includes: A second rotational speed of the fan at a moment before the fan cleaning mode is started is acquired, and the fan is controlled to rotate at the second rotational speed, wherein the second rotational speed is greater than the first rotational speed.

10. The method according to claim 8, characterized in that After continuing to control the first water connection pipe / water connection pipe to be connected for a second preset time period, the method further includes: Obtaining the second speed of the fan and the operating mode of the air conditioner indoor unit at a moment before the fan cleaning mode is started, obtaining the instantaneous surface humidity of the fan, and calculating the ratio of the instantaneous surface humidity to the indoor ambient humidity; If the operating mode is the heating mode, the fan is controlled to rotate at a third speed, and until the ratio is less than a preset ratio, the fan is controlled to rotate at a second speed, wherein the third speed is between the first speed and the second speed, and the second speed is greater than the first speed; If the operation mode is the cooling mode, the indoor ambient temperature is obtained, and the operation of the fan is controlled according to the indoor ambient temperature.

11. The method according to claim 10, characterized in that The controlling the operation of the fan according to the indoor ambient temperature includes: When the indoor ambient temperature is greater than a preset temperature, the fan is controlled to rotate at a third speed, and when the ratio is less than a preset ratio, the fan is controlled to rotate at a second speed; When the indoor ambient temperature is less than or equal to a preset temperature, the air-conditioning indoor unit is controlled to operate in a heating mode, and the fan is controlled to stop rotating. When the ratio is less than a preset ratio, the air-conditioning indoor unit is controlled to operate in a cooling mode, and the fan is controlled to rotate at a second speed.

12. A fan dust removal device, characterized in that: Applicable to an air conditioner indoor unit according to any one of claims 1 to 5, the device comprising: a first processing module, configured to obtain indoor environmental humidity, control the fan to rotate at a first speed, and control the brush to approach the fan when the air conditioner indoor unit starts a fan cleaning mode; a second processing module, configured to control the electrostatic generator to start for a first preset time if the indoor ambient humidity is greater than a preset humidity, so that the brush electrostatically attracts dust attached to the fan; The third processing module is used to control the first water receiving pipe / the second water receiving pipe to be connected for a first preset time period if the indoor environmental humidity is less than or equal to a preset humidity, so that the wetted brush can brush off the dust attached to the fan.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the fan dust removal method according to any one of claims 6 to 10 are implemented.

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