WO2020187234A1

WO2020187234A1 - Self-cleaning control method for air conditioner

Info

Publication number: WO2020187234A1
Application number: PCT/CN2020/079912
Authority: WO
Inventors: 于洋
Original assignee: 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2019-03-21
Filing date: 2020-03-18
Publication date: 2020-09-24
Also published as: CN109916060A

Abstract

Disclosed is a self-cleaning control method for an air conditioner. In order to improve a self-cleaning effect of an air conditioner, the self-cleaning control method for an air conditioner comprises: before an air conditioner executes self-cleaning, enabling an air-blowing device to blow air to a heat exchanger of an indoor unit; after a first preset time, enabling the air-blowing device to stop blowing air to the heat exchanger of the indoor unit; and then, after a second preset time, enabling the air conditioner to execute self-cleaning. In order to clean dirt adhered to a heat exchanger more easily, before self-cleaning is executed, an air-blowing device is firstly used to blow air to the heat exchanger for a period of time, so that the dirt adhered to the heat exchanger can be blown away from the heat exchanger; then, after air blowing is stopped for a period of time, the dirt falls on the heat exchanger again; and at this time, the dirt is no longer firmly adhered to the heat exchanger and can be easily cleaned by means of self-cleaning, thereby greatly improving the self-cleaning effect of an air conditioner.

Description

Air conditioner self-cleaning control method

Technical field

The invention belongs to the technical field of air conditioners, and specifically provides a self-cleaning control method for an air conditioner.

Background technique

The air conditioner is a device that can cool/heat the room. As time goes by, the dust accumulation on the indoor unit of the air conditioner will gradually increase. When the dust accumulation reaches a certain level, a large number of bacteria will breed, especially when the indoor air flows through the room. The air conditioner needs to be cleaned in time because it will carry a lot of dust and bacteria when it is running. During the self-cleaning process of the air conditioner, sometimes some dust adheres to the indoor heat exchanger, which is difficult to clean, even if the self-cleaning method is used, it is difficult to wash off, but it will make the dust adhere more firmly.

Therefore, the present invention proposes a new air conditioner self-cleaning control method to solve the above problems.

Summary of the invention

In order to solve the above-mentioned problems in the prior art, that is, to improve the self-cleaning effect of an air conditioner, the present invention proposes a self-cleaning and humidifying control method for an air conditioner. The air conditioner includes an indoor unit and an indoor unit installed in the indoor unit. A blowing device, the air conditioner self-cleaning control method includes the following steps: S110, before the air conditioner performs self-cleaning, making the blowing device blow air to the heat exchanger of the indoor unit; S120, after a first preset After time, the air blowing device is made to stop blowing to the heat exchanger of the indoor unit; S130, after a second preset time has elapsed, the air conditioner is made to perform self-cleaning.

In a preferred embodiment of the above air conditioner self-cleaning control method, the air blowing device is a fan of the indoor unit, and step S110 specifically includes: adjusting the rotation direction of the fan so that the fan is directed toward the indoor unit The heat exchanger blows.

In a preferred embodiment of the above-mentioned air conditioner self-cleaning control method, the air supply device is a dedicated fan set independently of the fan of the indoor unit, and step S110 specifically includes: activating the dedicated fan to send the air to the indoor unit The heat exchanger blows.

In a preferred embodiment of the above air conditioner self-cleaning control method, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is determined as follows: during the operation of the air conditioner Detecting the pressure difference between the leeward surface and the windward surface of the heat exchanger of the indoor unit; and determining the blowing intensity of the blowing device according to the pressure difference.

In a preferred embodiment of the above air conditioner self-cleaning control method, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is determined in the following manner: acquiring the heat exchange of the indoor unit The image of the heat exchanger is processed to obtain the turbidity of the heat exchanger; the blowing intensity of the blowing device is determined according to the turbidity.

In the preferred embodiment of the above air conditioner self-cleaning control method, in step S110, the blowing intensity of the blowing device when blowing to the heat exchanger of the indoor unit is determined as follows: The blowing intensity of the air blowing to the heat exchanger of the indoor unit; detecting the concentration of dust blown by the blowing device; and determining the blowing intensity of the blowing device again according to the dust concentration.

In a preferred embodiment of the above air conditioner self-cleaning control method, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is determined as follows: during the operation of the air conditioner Detecting the current value of the fan of the indoor unit at the current speed; determining the blowing intensity of the blowing device according to the current value.

In a preferred embodiment of the above air conditioner self-cleaning control method, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is determined as follows: during the operation of the air conditioner Detecting the air output of the air outlet of the indoor unit; and determining the blowing intensity of the blowing device according to the air output.

In a preferred embodiment of the above air conditioner self-cleaning control method, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is determined as follows: Obtain the PM2.5 value of the indoor air ; Determine the blowing intensity of the blowing device according to the PM2.5 value.

In the preferred embodiment of the above air conditioner self-cleaning control method, the step of "obtaining the PM2.5 value of indoor air" specifically includes: using a PM2.5 sensor to detect the PM2.5 value of indoor air; or obtaining local weather information, The PM2.5 value of indoor air is obtained from the weather information.

In the technical scheme of the present invention, in order to more easily clean up the contaminants adhering to the heat exchanger, a blowing device is used to blow air to the heat exchanger for a period of time before performing self-cleaning, so that the adhesion to the heat exchanger can be adhered to After blowing off the heat exchanger, and then stopping the blowing for a period of time, the dirt will fall to the heat exchanger again. At this time, the adhesion between the dirt and the heat exchanger is no longer strong, and it is easy to pass the self-cleaning Way to clean up, thereby greatly improving the self-cleaning effect of the air conditioner.

Description of the drawings

Fig. 1 is a main flow chart of the self-cleaning humidification control method of an air conditioner of the present invention.

detailed description

In order to make the embodiments, technical solutions and advantages of the present invention more obvious, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Examples. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

The air conditioner of the present invention includes an indoor unit and a blowing device installed in the indoor unit. As shown in Figure 1, the air conditioner self-cleaning control method of the present invention includes the following steps: S110, before the air conditioner performs self-cleaning, the air blowing device is blown to the heat exchanger of the indoor unit; S120, after the first preset time has elapsed , The blowing device stops blowing to the heat exchanger of the indoor unit; S130, after the second preset time has elapsed, the air conditioner is made to perform self-cleaning. Those skilled in the art can understand that, in order to more easily clean the contaminants adhering to the heat exchanger, before performing self-cleaning, the air blowing device is used to blow air to the heat exchanger for a period of time, so that the adhesion on the heat exchanger can be removed. The dirt on the heat exchanger is blown away from the heat exchanger, and then after the blowing is stopped for a period of time, the dirt will fall to the heat exchanger again. At this time, the adhesion of the dirt and the heat exchanger is no longer strong, and it is easy to pass through Clean up in a clean way. Using the above method can greatly improve the self-cleaning effect of the air conditioner.

It should be noted that the first preset time and the second preset time mentioned above can be flexibly set by those skilled in the art according to actual needs. For example, the first preset time may be 1 minute, 2 minutes, 5 minutes, etc., and the second preset time may also be 1 minute, 2 minutes, 5 minutes, etc., or other reasonable times set by those skilled in the art.

As an example, the blowing device of the present invention may be a fan of an indoor unit. When the blowing device needs to blow to the heat exchanger of the indoor unit, the rotation direction of the fan can be adjusted to make the fan blow to the heat exchanger of the indoor unit. ; As another example, the blowing device can be a detection fan that is independent of the fan of the indoor unit, that is, a dedicated detection fan is installed for the indoor unit, and the detection fan can be started to blow to the heat exchanger of the indoor unit purpose.

Preferably, in step S110, when the blowing device blows to the heat exchanger of the indoor unit, different blowing intensities can be used. The blowing intensity can be determined according to the turbidity of the heat exchanger, and different turbidity requires different blowing intensities.

In a specific embodiment, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit can be determined as follows: During the operation of the air conditioner, the leeward side and the windward side of the heat exchanger of the indoor unit are detected The pressure difference between; the blowing intensity of the blowing device is determined according to the pressure difference. For example, because the pressure difference between the leeward side and the windward side of the heat exchanger can reflect the turbidity of the indoor heat exchanger, the larger the pressure difference, the dirtier the indoor heat exchanger, that is, the greater the blowing intensity required. Therefore, those skilled in the art can obtain the functional relationship between the pressure difference between the leeward side and the windward side of the heat exchanger and the blowing intensity through experiments, and then only need to detect the difference between the leeward and windward sides of the heat exchanger The pressure difference can determine the blowing intensity of the blowing device, so as to obtain the best self-cleaning effect.

In a specific embodiment, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit can be determined as follows: obtain the heat exchanger image of the indoor unit; process the heat exchanger image to obtain the heat exchanger The degree of turbidity; determine the blowing intensity of the blowing device according to the degree of turbidity. For example, the higher the turbidity of the heat exchanger, the more dirty the heat exchanger, that is, the greater the blowing intensity required. Therefore, those skilled in the art can obtain the functional relationship between the turbidity of the heat exchanger and the blowing intensity through experiments, and then only need to process the heat exchanger image to obtain the turbidity of the heat exchanger to determine the blowing of the blowing device. Strength to obtain the best self-cleaning effect. It should be noted that the step of processing the image of the heat exchanger to obtain the turbidity of the heat exchanger can be implemented using an image recognition module. Regarding the image recognition module, it should be noted that the image recognition module can use any existing chip used for image processing, as long as it can achieve the purpose of image analysis and processing to obtain turbidity. For example, you can compare the acquired image of the heat exchanger with the image of a clean heat exchanger (that is, not covered with dirt and other contaminants) to obtain the amount of dust on the current heat exchanger image, and then calculate this according to the set algorithm The dirtiness of the dust. Those skilled in the art can also use any other reasonable algorithm to calculate the turbidity on the heat exchanger, which will not be described in detail here. Regarding the acquisition of the image of the heat exchanger, a camera set above the heat exchanger can be used for shooting and collection.

In a specific embodiment, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit can be determined as follows: the blowing device blows to the heat exchanger of the indoor unit according to the preset blowing intensity; The concentration of dust blown by the device; the blowing intensity of the blowing device is determined again according to the dust concentration. For example, since the dust concentration on the heat exchanger can reflect the turbidity of the indoor heat exchanger, the greater the dust concentration, the dirtier the indoor heat exchanger, that is, the greater the blowing intensity required. Therefore, those skilled in the art can obtain the functional relationship between the dust concentration on the heat exchanger and the blowing intensity through experiments, and then only need to detect the dust concentration on the heat exchanger to determine the blowing intensity of the blowing device, thereby obtaining the best Good self-cleaning effect. It should be noted that the present invention uses a blowing device to blow air on the heat exchanger to blow up the dust on the heat exchanger, so that the dust concentration on the heat exchanger can be accurately and conveniently detected.

In a specific implementation, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit can be determined as follows: during the operation of the air conditioner, the current value of the fan of the indoor unit at the current speed is detected; Determine the blowing intensity of the blowing device according to the current value. For example, since the current of the fan can reflect the turbidity of the indoor heat exchanger, the smaller the current value of the fan at the same speed, the more dirty the indoor heat exchanger, that is, the greater the blowing intensity required. Therefore, those skilled in the art can obtain the functional relationship between the current value of the fan at different speeds and the blowing intensity through experiments, and then only need to detect the current value of the fan at the current speed to determine the blowing intensity of the blowing device, thereby Get the best self-cleaning effect.

In a specific embodiment, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit can be determined in the following manner: during the operation of the air conditioner, the air volume of the air outlet of the indoor unit is detected; The air volume determines the blowing intensity of the blowing device. For example, since the air output of the air outlet of the indoor unit can reflect the turbidity of the indoor heat exchanger, the larger the air output, the dirtier the indoor heat exchanger, that is, the greater the blowing intensity required. Therefore, those skilled in the art can obtain the functional relationship between the air outlet of the indoor unit and the blowing intensity through experiments, and then only need to detect the air outlet of the indoor unit to determine the blowing intensity of the blowing device. So as to obtain the best self-cleaning effect.

In a specific embodiment, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit can be determined as follows: obtaining the PM2.5 value of the indoor air; determining the blowing intensity of the blowing device according to the PM2.5 value. For example, because the PM2.5 value of indoor air can reflect the turbidity of the indoor heat exchanger, the greater the PM2.5 value, the dirtier the indoor heat exchanger, that is, the greater the blowing intensity required. Therefore, those skilled in the art can obtain the functional relationship between the PM2.5 value of indoor air and the blowing intensity through experiments, and then only need to detect the PM2.5 value of indoor air to determine the blowing intensity of the blowing device, thereby obtaining The best self-cleaning effect. As an example, the above-mentioned indoor air PM2.5 can be detected by using a PM2.5 sensor, or local weather information can be acquired, and then the indoor air PM2.5 value can be acquired from the acquired weather information.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, those skilled in the art will readily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

A self-cleaning control method of an air conditioner, the air conditioner comprising an indoor unit and a blowing device arranged in the indoor unit, wherein the self-cleaning control method of the air conditioner includes the following steps:

S110. Before the air conditioner performs self-cleaning, make the air blowing device blow air to the heat exchanger of the indoor unit;

S120. After a first preset time has elapsed, stop the blowing device from blowing to the heat exchanger of the indoor unit;

S130. After a second preset time has elapsed, make the air conditioner perform self-cleaning.
The self-cleaning control method of an air conditioner according to claim 1, wherein the air supply device is a fan of the indoor unit, and step S110 specifically includes:

The rotation direction of the fan is adjusted so that the fan blows air to the heat exchanger of the indoor unit.
The self-cleaning control method of an air conditioner according to claim 1, wherein the air supply device is a dedicated fan installed independently of the fan of the indoor unit, and step S110 specifically includes:

The dedicated fan is activated to blow air to the heat exchanger of the indoor unit.
The air conditioner self-cleaning control method according to any one of claims 1 to 3, characterized in that, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is as follows determine:

During the operation of the air conditioner, detecting the pressure difference between the leeward surface and the windward surface of the heat exchanger of the indoor unit;

The blowing intensity of the blowing device is determined according to the pressure difference.
The air conditioner self-cleaning control method according to any one of claims 1 to 3, characterized in that, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is as follows determine:

Acquiring a heat exchanger image of the indoor unit;

Processing the image of the heat exchanger to obtain the turbidity of the heat exchanger;

The blowing intensity of the blowing device is determined according to the turbidity.
The air conditioner self-cleaning control method according to any one of claims 1 to 3, characterized in that, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is as follows determine:

Enabling the blowing device to blow air to the heat exchanger of the indoor unit according to a preset blowing intensity;

Detecting the concentration of dust blown by the blowing device;

The blowing intensity of the blowing device is determined again according to the dust concentration.
The air conditioner self-cleaning control method according to any one of claims 1 to 3, characterized in that, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is as follows determine:

During the operation of the air conditioner, detecting the current value of the fan of the indoor unit at the current speed;

The blowing intensity of the blowing device is determined according to the current value.
The air conditioner self-cleaning control method according to any one of claims 1 to 3, characterized in that, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is as follows determine:

During the operation of the air conditioner, detecting the air volume of the air outlet of the indoor unit;

The blowing intensity of the blowing device is determined according to the air output volume.
The air conditioner self-cleaning control method according to any one of claims 1 to 3, characterized in that, in step S110, the blowing intensity when the blowing device blows to the heat exchanger of the indoor unit is as follows determine:

Get the PM2.5 value of indoor air;

The blowing intensity of the blowing device is determined according to the PM2.5 value.
The air conditioner self-cleaning control method according to claim 9, wherein the step of "obtaining the PM2.5 value of indoor air" specifically includes:

Use a PM2.5 sensor to detect the PM2.5 value of indoor air; or

Obtain local weather information, and obtain the PM2.5 value of indoor air from the weather information.