WO2020187229A1

WO2020187229A1 - Self-cleaning control method for air conditioner, and air conditioner

Info

Publication number: WO2020187229A1
Application number: PCT/CN2020/079905
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: CN109916040A

Abstract

Disclosed is an air conditioner and a self-cleaning control method therefor. The air conditioner comprises an indoor heat exchanger and a condensed water pipeline, wherein condensed water generated by the indoor heat exchanger is discharged through the condensed water pipeline. The self-cleaning control method for the air conditioner comprises: detecting whether an indoor heat exchanger generates condensed water; in the case of the indoor heat exchanger generating condensed water, detecting the turbidity of the condensed water in the condensed water pipeline; and determining, according to the turbidity of the condensed water, whether to execute a self-cleaning mode. That is to say, the dirtiness and cleanliness of the indoor heat exchanger can be accurately determined according to the turbidity of the condensed water, so that the air conditioner starts self-cleaning at an appropriate occasion, thereby improving the user experience.

Description

Air conditioner self-cleaning control method and air conditioner

Technical field

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

Background technique

Air conditioners are equipment that can cool/heat indoors. As time goes by, the dust on the indoor unit and outdoor unit of the air conditioner will gradually increase. When the dust accumulates to a certain extent, a large number of bacteria will breed, especially indoors. When the air flows through the indoor unit, it will carry a lot of dust and bacteria, so it is necessary to clean the air conditioner in time.

In the prior art, the cleaning methods of the air conditioner include manual cleaning and self-cleaning of the air conditioner. Manual cleaning is time-consuming and laborious. It is necessary to disassemble the parts of the air conditioner before cleaning. After the cleaning is completed, the parts need to be renewed. Assembled. Therefore, many current air conditioners have adopted the self-cleaning method. However, due to the actual installation location, actual operating state and indoor environment of the air conditioner, the air conditioner cannot automatically determine when to turn on the self-cleaning control, but requires the user Judge yourself whether to implement the self-cleaning mode of the air conditioner, which will lead to: If the self-cleaning mode is frequently turned on, although the cleanliness of the air conditioner can be guaranteed, it will cause a waste of energy. If the self-cleaning mode is turned on for a long time Mode, it is difficult to ensure the cleanliness of the air conditioner, and may affect the normal use of the air conditioner, and at the same time affect human health.

Therefore, a new air conditioner self-cleaning control method and air conditioner are proposed in the art to solve the above problems.

Summary of the invention

In order to solve the above-mentioned problems in the prior art, that is, to more accurately determine when the air conditioner turns on the self-cleaning mode, the present invention provides a self-cleaning control method for an air conditioner. The air conditioner includes an indoor heat exchanger and a condensate pipe. The condensed water generated by the indoor heat exchanger is discharged through the condensate pipe, and the air conditioner self-cleaning control method includes the following steps: S110, detecting whether the indoor heat exchanger generates condensate; S120, in the When the indoor heat exchanger generates condensed water, detect the turbidity of the condensed water in the condensed water pipeline; S130, judge whether to run the self-cleaning mode according to the turbidity of the condensed water.

In the preferred embodiment of the above air conditioner self-cleaning control method, step S130 specifically includes: when the turbidity of the condensed water exceeds a preset standard value, the air conditioner is operated in a self-cleaning mode.

In the preferred embodiment of the air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: during the operation of the air conditioner, detecting that the indoor fan of the air conditioner is running The current value at the current speed; step S110 specifically includes: when the current value is lower than the preset current value, then detecting whether the indoor heat exchanger generates condensed water.

In a preferred embodiment of the air conditioner self-cleaning control method, before performing step S110, the air conditioner self-cleaning control method further includes: obtaining the PM2.5 value of indoor air; step S110 specifically includes: when the PM2. When the value of 5 is higher than the preset standard value, check whether the indoor heat exchanger generates condensate.

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.

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: obtaining local weather information; obtaining indoor air PM2.5 according to the obtained local weather information value.

In a preferred embodiment of the above air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: during the operation of the air conditioner, detecting that the indoor unit of the air conditioner is out The outlet air volume of the air outlet; step S110 specifically includes: when the outlet air volume is lower than the preset air volume, then detecting whether the indoor heat exchanger generates condensed water.

In a preferred embodiment of the above air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: detecting the leeward wind of the indoor heat exchanger during the operation of the air conditioner The pressure difference between the surface and the windward surface; step S110 specifically includes: when the pressure difference exceeds a preset pressure difference, then detecting whether the indoor heat exchanger generates condensation water.

In a preferred embodiment of the above air conditioner self-cleaning control method, the air conditioner further includes a water turbidity sensor arranged on the condensate water pipeline; in step S120, the water turbidity sensor is used to detect the condensate water pipe The turbidity of the condensate in the road.

The present invention also provides an air conditioner including a controller, characterized in that the controller is configured to be able to execute the above-mentioned air conditioner self-cleaning control method.

If the indoor heat exchanger is dirty, the condensate produced in the cooling mode will also be dirty, that is, the turbidity of the condensate will also change with the degree of dirtiness of the indoor heat exchanger. Therefore, the present invention can accurately determine the degree of dirtiness of the indoor heat exchanger according to the turbidity of the condensed water, thereby enabling the air conditioner to start self-cleaning at an appropriate time, thereby improving user experience.

Description of the drawings

Fig. 1 is a main flow chart of the air conditioner self-cleaning control method 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 heat exchanger and a condensed water pipeline. During the cooling operation of the air conditioner, when the surface temperature of the indoor heat exchanger is lower than the air dew point temperature, the water vapor in the air will be in the indoor heat exchanger. The surface condenses to form condensed water, which is discharged through the condensed water pipeline.

As shown in Figure 1, the self-cleaning control method of the air conditioner of the present invention includes the following steps: S110, detecting whether the indoor heat exchanger generates condensate; S120, detecting the condensate water pipeline when the indoor heat exchanger generates condensate The turbidity of the condensed water; S130, judge whether to run the self-cleaning mode according to the turbidity of the condensed water. Those skilled in the art can understand that if the indoor heat exchanger is dirty, the condensate produced in the cooling mode will also be dirty, that is, the turbidity of the condensate will also vary with the degree of dirtiness of the indoor heat exchanger. Variety. Therefore, the present invention can accurately determine the degree of dirtiness of the indoor heat exchanger according to the turbidity of the condensed water, thereby enabling the air conditioner to start self-cleaning at an appropriate time, thereby improving user experience.

In step S110, the indoor coil temperature and the indoor dew point temperature can be used to determine whether the indoor heat exchanger generates condensate, or other suitable methods, such as directly detecting whether there is condensate in the condensate pipeline. In step S120, the turbidity of the condensed water in the condensate water pipe can be detected by a water quality turbidity sensor provided on the condensate water pipe. In step S130, when the turbidity of the condensed water exceeds a preset standard value, the air conditioner is caused to execute a self-cleaning mode. The preset standard value can be set by those skilled in the art according to actual needs. For example, a person skilled in the art can obtain the corresponding relationship between the condensate turbidity and the dirty degree of the indoor heat exchanger through experiments, so as to determine a reasonable forecast standard value to determine whether the air conditioner needs self-cleaning.

In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, the current value of the indoor fan of the air conditioner at the current speed is detected ; When the current value is lower than the preset current value, check whether the indoor heat exchanger produces condensate. Those skilled in the art can understand that the smaller the current value of the indoor fan at the same rotation speed, the more dirty the indoor heat exchanger, but it may be misjudged from the parameter of the fan current to determine whether the indoor heat exchanger is dirty or blocked. Therefore, when the current value of the indoor fan at the current speed is lower than the preset current value, the turbidity of the indoor condensate is combined to further determine whether the indoor heat exchanger is dirty, which can further reduce the risk of misjudgment. Thus, the timing of the air conditioner to perform self-cleaning is more accurate. It should be noted that the above-mentioned preset current value can be selected by a person skilled in the art according to actual conditions. For example, the standard current value of the fan at different speeds of the indoor heat exchanger in the case of no dirty blockage is obtained through the test method. When the real-time current value at a certain speed is lower than the standard current value at that speed, it is indicated The indoor heat exchanger begins to become dirty and clogged. As the real-time current value gradually decreases, the indoor heat exchanger becomes more and more dirty. Those skilled in the art can choose a reasonable preset according to different test scenarios and different needs. Current value (the preset current value at the same speed ≤ the standard current value at the same speed).

In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: obtain the PM2.5 value of the indoor air; when the PM2.5 value is higher than the preset standard value , And then check whether the indoor heat exchanger produces condensate. Those skilled in the art can understand that whether the indoor heat exchanger is dirty or blocked or how long it will be dirty is largely related to the indoor air quality (PM2.5 value). When the air quality is poor, the indoor heat exchange The organs get dirty quickly; when the air quality is good, the indoor heat exchanger gets dirty slowly. However, it may be a risk of misjudgment to judge whether the indoor heat exchanger is dirty or blocked from the parameter of PM2.5 value alone. Therefore, when the PM2.5 value is higher than the preset standard value, combined with the dust on the heat exchanger Further judging whether the indoor heat exchanger needs to be dirty or blocked can further reduce the risk of misjudgment, so that the timing of the air conditioner's self-cleaning operation is more accurate. It should be noted that PM2.5 represents the content of fine particles per cubic meter of air. For example, the PM2.5 concentration index of 10 micrograms/m3 is 10, and the PM2.5 value of the present invention is the PM2.5 concentration index. Therefore, the aforementioned preset standard value can be set to any value between 120-150, and the PM2.5 value in this interval represents relatively poor air quality. Of course, those skilled in the art can also select other reasonable values according to actual conditions.

Further, the PM2.5 value of indoor air can be detected by using a PM2.5 sensor installed on the air conditioner, or the PM2.5 value of indoor air can be obtained from weather information by obtaining local weather information. The specific method for obtaining the PM2.5 value can be flexibly selected by those skilled in the art, and will not be repeated here.

In some possible implementations, before step S110 is performed, the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the distance between the leeward side and the windward side of the indoor heat exchanger When the pressure difference exceeds the preset pressure difference, check whether the indoor heat exchanger produces condensate. Those skilled in the art can understand that the greater the pressure difference between the leeward side and the windward side of the indoor heat exchanger, the more dirty the indoor heat exchanger, but the pressure difference is a parameter to judge whether the indoor heat exchanger is dirty. Blocking may have the risk of misjudgment. Therefore, when the pressure difference exceeds the preset pressure difference, the condensate turbidity is combined to further determine whether the indoor heat exchanger is required to be blocked, which can further reduce the risk of misjudgment and make The timing of the air conditioner performing self-cleaning is more accurate. It should be noted that the above-mentioned preset pressure difference can be selected by a person skilled in the art according to actual conditions to a reasonable value. For example, the standard pressure difference between the leeward side and the windward side of the indoor heat exchanger in the absence of dirty clogging is obtained through the test method. When the real-time pressure difference is greater than the standard pressure difference, it indicates that the indoor heat exchanger starts to appear dirty As the real-time pressure difference gradually increases, the dirty clogging of the indoor heat exchanger becomes more and more serious. Those skilled in the art can select a reasonable preset pressure difference according to different test scenarios and different needs (the preset pressure difference ≥standard pressure difference).

In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the air volume of the air outlet of the indoor unit of the air conditioner; When the outlet air volume is lower than the preset air volume, then check whether the indoor heat exchanger produces condensate. Those skilled in the art can understand that the smaller the air outlet of the indoor unit, the more dirty the indoor heat exchanger. However, it may be misjudged to judge whether the indoor heat exchanger is dirty or blocked from the single parameter of the air outlet. Therefore, when the air outlet air volume is lower than the preset air volume, the condensate turbidity is combined to further determine whether the indoor heat exchanger needs to be dirty, which can further reduce the risk of misjudgment and make the air conditioner perform self-cleaning The timing is more accurate. It should be noted that the above-mentioned preset air volume can be selected by a person skilled in the art according to actual conditions. For example, obtain the standard air flow rate of the indoor unit air outlet of the indoor heat exchanger without being dirty and clogged through the test method. When the real-time air flow rate is lower than the standard air flow rate, it means that the indoor heat exchanger starts to appear. Dirty blockage, as the real-time air volume gradually decreases, the dirty blockage of the indoor heat exchanger is getting more and more serious. Those skilled in the art can choose a reasonable preset air volume according to different test scenarios and different needs (the preset air volume ≤standard air volume).

The present invention also provides an air conditioner including a controller configured to perform the above-mentioned air conditioner self-cleaning control method.

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 for an air conditioner, the air conditioner comprising an indoor heat exchanger and a condensate pipe, the condensate produced by the indoor heat exchanger is discharged through the condensate pipe, and the air conditioner is characterized in that the air conditioner is self-cleaning The cleaning control method includes the following steps:

S110. Detect whether the indoor heat exchanger generates condensed water;

S120: Detect the turbidity of the condensed water in the condensed water pipeline when the indoor heat exchanger generates condensed water;

S130: Determine whether to run the self-cleaning mode according to the turbidity of the condensed water.
The self-cleaning control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When the turbidity of the condensed water exceeds the preset standard value, the air conditioner is operated in a self-cleaning mode.
The air conditioner self-cleaning control method according to claim 1 or 2, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:

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

Step S110 specifically includes:

When the current value is lower than the preset current value, detecting whether the indoor heat exchanger generates condensed water.
The air conditioner self-cleaning control method according to claim 1 or 2, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:

Get the PM2.5 value of indoor air;

Step S110 specifically includes:

When the PM2.5 value is higher than the preset standard value, it is then detected whether the indoor heat exchanger generates condensed water.
The air conditioner self-cleaning control method of claim 4, wherein the step of "obtaining the PM2.5 value of indoor air" specifically includes:

Use PM2.5 sensor to detect the PM2.5 value of indoor air.
The air conditioner self-cleaning control method of claim 4, wherein the step of "obtaining the PM2.5 value of indoor air" specifically includes:

Obtain local weather information;

Obtain the PM2.5 value of indoor air according to the obtained local weather information.
The air conditioner self-cleaning control method according to claim 1 or 2, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:

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

Step S110 specifically includes:

When the outlet air volume is lower than the preset air volume, it is then detected whether the indoor heat exchanger generates condensation water.
The air conditioner self-cleaning control method according to claim 1 or 2, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:

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

Step S110 specifically includes:

When the pressure difference exceeds the preset pressure difference, it is then detected whether the indoor heat exchanger generates condensed water.
The self-cleaning control method of an air conditioner according to claim 1, wherein the air conditioner further comprises a water quality turbidity sensor arranged on the condensate water pipeline;

In step S120, the water quality turbidity sensor is used to detect the turbidity of the condensed water in the condensed water pipeline.
An air conditioner, comprising a controller, characterized in that the controller is configured to execute the air conditioner self-cleaning control method according to any one of claims 1 to 9.