WO2020187228A1

WO2020187228A1 - Air conditioner self-cleaning control method and air conditioner

Info

Publication number: WO2020187228A1
Application number: PCT/CN2020/079904
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: CN109916048A; CN109916048B

Abstract

The present invention relates to the technical field of air conditioners, and specifically provided thereby is an air conditioner self-cleaning control method. In order to control the self-cleaning of the air conditioner more accurately, the air conditioner self-cleaning control method provided by the present invention comprises the following steps: detecting the dust concentration P on an indoor unit heat exchanger in the process of the air conditioner running a standard self-cleaning mode; detecting the current indoor air humidity T; and selectively regulating frosting time and/or defrosting time of the standard self-cleaning mode according to the dust concentration P and indoor air humidity T. Compared to existing self-cleaning modes in which fixed frosting time and defrosting time are used, using the present invention may precisely control the frosting time and/or defrosting time of the standard self-cleaning mode of the air conditioner according to the practical operating working conditions of the air conditioner, thereby greatly improving the cleaning effect when the air conditioner runs the self-cleaning mode, and thus improving the use experience of a user.

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

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.

Now air conditioners mostly adopt a self-cleaning method, that is, by controlling the operation of the indoor unit, the evaporator is frosted first and then defrosted, and the evaporator is cleaned by defrosting. During the self-cleaning process of the existing air conditioner, both the frosting time and the defrosting time are fixed, and the fixed time is generally a value determined under ideal and specific test conditions. However, in the actual operation of the air conditioner, there may be some differences between the actual operating conditions and the ideal and specific test conditions. This leads to the problem of insufficient control accuracy when the air conditioner runs in accordance with the existing self-cleaning procedures. , Such as insufficient cleaning due to too short frosting time.

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

Summary of the invention

In order to solve the above-mentioned problems in the prior art, that is, to more accurately control the self-cleaning of an air conditioner, the present invention provides a self-cleaning control method for an air conditioner. The air conditioner includes an indoor unit and defrosts after frosting. The indoor unit is self-cleaned in a manner, and the air conditioner self-cleaning control method includes the following steps: S110, detecting the dust on the heat exchanger of the indoor unit while the air conditioner is running in the standard self-cleaning mode Concentration P; S120, detecting the current indoor air humidity T; S130, selectively adjusting the frosting time and/or defrosting time of the standard self-cleaning mode according to the dust concentration P and the indoor air humidity T.

In the preferred embodiment of the above air conditioner self-cleaning control method, step S130 specifically includes: when the first preset threshold <P <the second preset threshold and the second preset humidity value <T <the first preset humidity value , Execute the standard self-cleaning mode of the air conditioner.

In the preferred embodiment of the above air conditioner self-cleaning control method, step S130 specifically includes: when the first preset threshold <P <the second preset threshold and T ≥ the first preset humidity value, self-cleaning the standard The frost time of the mode is reduced by the first preset time.

In the preferred embodiment of the above air conditioner self-cleaning control method, step S130 specifically includes: when the first preset threshold <P <the second preset threshold and T ≤ the second preset humidity value, the standard self-cleaning The frost time of the mode is increased by the second preset time.

In the preferred embodiment of the above air conditioner self-cleaning control method, step S130 specifically includes: when P≥the second preset threshold and the second preset humidity value<T<the first preset humidity value, the standard is self-cleaning The frosting time of the cleaning mode is increased by a second preset time, and the defrosting time of the standard self-cleaning mode is increased by a first preset time.

In the preferred embodiment of the air conditioner self-cleaning control method, step S130 specifically includes: when P ≥ a second preset threshold and T ≥ a first preset humidity value, increasing the defrosting time of the standard self-cleaning mode by a first A preset time.

In the preferred embodiment of the above air conditioner self-cleaning control method, step S130 specifically includes: when P ≥ a second preset threshold and T ≤ a second preset humidity value, increasing the frosting time of the standard self-cleaning mode by a first Three preset time, and increase the defrosting time of the standard self-cleaning mode by a first preset time.

In a preferred embodiment of the above air conditioner self-cleaning control method, the first preset time is any time between 0.5-1.5 minutes; the second preset time is any time between 4.5-5.5 minutes; The third preset time is any time between 9-11 minutes; and/or the first preset time is 1 minute; the second preset time is 5 minutes, and the third preset time For 10 minutes.

In a preferred embodiment of the above air conditioner self-cleaning control method, in step S110, the step of detecting the dust concentration P on the indoor unit heat exchanger includes: using a blowing device to blow air to the indoor unit heat exchanger; A dust sensor is used to detect the concentration of dust blown up by the blowing device.

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

The present invention selectively adjusts the frosting time and/or defrosting time of the standard self-cleaning mode according to the dust concentration P on the indoor unit heat exchanger and the indoor air humidity T. Compared with the fixed frosting time and defrosting time used in the existing self-cleaning mode, the present invention can accurately control the frosting time and defrosting time of the standard self-cleaning mode of the air conditioner according to the actual operating conditions of the air conditioner , Thereby greatly improving the cleaning effect of the air conditioner during self-cleaning operation, thereby enhancing the 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 self-cleaning control method provided by the present invention aims to more accurately control the self-cleaning of the air conditioner. The air conditioner of the present invention includes an indoor unit and an outdoor unit, and the indoor unit is self-cleaned by first frosting and then defrosting . Referring to Fig. 1, Fig. 1 is a main flowchart of the self-cleaning control method of an air conditioner of the present invention. As shown in Figure 1, the air conditioner self-cleaning control method of the present invention includes the following steps: S110, detecting the dust concentration P on the heat exchanger of the indoor unit during the air conditioner running the standard self-cleaning mode; S120, detecting the current Indoor air humidity T; S130. Selectively adjust the frosting time and/or defrosting time of the standard self-cleaning mode according to the dust concentration P and the indoor air humidity T.

As an example, in step S110, the step of detecting the dust concentration P on the heat exchanger of the indoor unit includes: using a blowing device to blow air to the heat exchanger of the indoor unit; using a dust sensor to detect the concentration of dust blown by the blowing device. Specifically, the blowing device may be the fan of the indoor unit itself, and the fan only needs to be reversed to blow to the heat exchanger of the indoor unit; the blowing device may also be a dedicated fan separately installed in the indoor unit, using the The dedicated fan blows air to the heat exchanger of the indoor unit.

Those skilled in the art can understand that when the heat exchanger of the indoor unit is dirty, the intensity of self-cleaning needs to be high, that is, thicker frost is required; when the heat exchanger of the indoor unit is relatively clean, self-cleaning needs The frost is slightly thinner. However, during the self-cleaning process of the existing air conditioner, both the frosting time and the defrosting time are fixed. Therefore, in order to more accurately control the self-cleaning of the air conditioner, in step S130, the following conditions can be specifically followed Adjust the frosting time and/or defrosting time in the self-cleaning mode.

Case 1: When the first preset threshold <P <the second preset threshold, and the second preset humidity value <T <the first preset humidity value, the standard self-cleaning mode of the air conditioner is executed. Specifically, the first preset threshold and the second preset threshold can be obtained by those skilled in the art through experiments. When the dust concentration P is between the first preset threshold and the second preset threshold, it is determined that the indoor unit heat exchanger In a general dirty state. The second preset humidity value and the first preset humidity value can also be obtained by those skilled in the art through experiments. When the indoor air humidity T is between the second preset humidity value and the first preset humidity value, it is determined that the current indoor humidity is Humidity is a general humidity state. In this case, the standard self-cleaning mode of the air conditioner is executed, that is, the frosting/defrosting time in the self-cleaning mode is not increased or decreased.

Case 2: When the first preset threshold <P <the second preset threshold, and T ≥ the first preset humidity value, the frosting time of the standard self-cleaning mode is reduced by the first preset time. Specifically, as mentioned above, when the dust concentration P is between the first preset threshold and the second preset threshold, it is determined that the indoor unit heat exchanger is in a general dirty state; when the indoor air humidity T is higher than the first preset threshold When setting the humidity value, it can be judged that the current indoor air humidity is humid. In this case, the frosting time of the standard self-cleaning mode is reduced by the first preset time, and the defrosting time remains unchanged. The first preset time may be obtained by those skilled in the art according to experiments. For example, the first preset time may be 1 minute, or any time between 0.5 and 1.5 minutes.

Situation 3: When the first preset threshold<P<the second preset threshold, and T≦the second preset humidity value, the frosting time of the standard self-cleaning mode is increased by the second preset time. Specifically, as mentioned above, when the dust concentration P is between the first preset threshold and the second preset threshold, it is determined that the indoor unit heat exchanger is in a general dirty state; when the indoor air humidity T is lower than the second preset threshold When setting the humidity value, it can be judged that the current indoor air humidity is dry. In this case, the frosting time of the standard self-cleaning mode is increased by the second preset time, and the defrosting time remains unchanged. The second preset time may be obtained by those skilled in the art according to experiments. For example, the second preset time may be 5 minutes, or any time between 4.5-5.5 minutes.

Case 4: When P ≥ the second preset threshold, and the second preset humidity value <T <the first preset humidity value, increase the frosting time of the standard self-cleaning mode by the second preset time, and set the standard self-cleaning The defrost time of the mode is increased by the first preset time. Specifically, when the dust concentration P is higher than the second preset threshold, it can be determined that the indoor unit heat exchanger is in a severely dirty state; when the indoor air humidity T is between the second preset humidity value and the first preset humidity value When the current indoor humidity is judged to be the general humidity state. In this case, the frosting time of the standard self-cleaning mode is increased by the second preset time, and the defrosting time of the standard self-cleaning mode is increased by the first preset time. The first preset time and the second preset time may be obtained by those skilled in the art according to experiments. For example, the first preset time may be 1 minute, or any time between 0.5-1.5 minutes, and the second preset time The time can be 5 minutes, or any time between 4.5-5.5 minutes.

Situation five: when P≥the second preset threshold value and T≥the first preset humidity value, the defrosting time of the standard self-cleaning mode is increased by the first preset time. Specifically, when the dust concentration P is higher than the second preset threshold, it can be judged that the indoor unit heat exchanger is in a severely dirty state; when the indoor air humidity T is higher than the first preset humidity value, it can be judged that the current indoor air humidity It is wet. In this case, the defrosting time of the standard self-cleaning mode is increased by the first preset time, and the frosting time remains unchanged. The first preset time may be obtained by those skilled in the art according to experiments. For example, the first preset time may be 1 minute, or any time between 0.5 and 1.5 minutes.

Case 6: When P ≥ the second preset threshold value and T ≤ the second preset humidity value, increase the frosting time of the standard self-cleaning mode by the third preset time, and increase the defrosting time of the standard self-cleaning mode by the first A preset time. Specifically, when the dust concentration P is higher than the second preset threshold, it can be determined that the indoor unit heat exchanger is in a severely dirty state; when the indoor air humidity T is lower than the second preset humidity value, it can be determined that the current indoor air humidity It is dry. In this case, the frosting time of the standard self-cleaning mode is increased by the third preset time, and the defrosting time of the standard self-cleaning mode is increased by the first preset time. The third preset time and the first preset time can be obtained by those skilled in the art according to experiments. For example, the third preset time can be 10 minutes, or any time between 9-11 minutes, the first preset The time can be 1 minute, or any time between 0.5-1.5 minutes.

It should be noted again that the first preset threshold and the second preset threshold mentioned above can be obtained by those skilled in the art through experiments, specifically the dust obtained when the heat exchanger of the indoor unit is in a general dirty state through experimental data. The highest value of the concentration. When the dust concentration is higher than the highest value, it is judged that the heat exchanger of the indoor unit is in a serious dirty state. In the same way, the first preset humidity value and the second preset humidity value can also be obtained by those skilled in the art through experiments. Specifically, the interval range when the indoor air humidity is at the general humidity is obtained through test data, and the interval range is determined After that, if the indoor air humidity is higher than the upper limit of the interval range, it means that the indoor air humidity is in a humid state; if the indoor air humidity is lower than the lower limit of the interval range, it means that the indoor air humidity is dry. In addition, the first preset time, the second preset time, and the third preset time can also be obtained by those skilled in the art through experiments.

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 includes an indoor unit and self-cleans the indoor unit by first forming frost and then defrosting, wherein the self-cleaning control method of the air conditioner includes the following steps :

S110. Detect the dust concentration P on the heat exchanger of the indoor unit during the operation of the standard self-cleaning mode of the air conditioner;

S120. Detect the current indoor air humidity T;

S130. Selectively adjust the frosting time and/or defrosting time in the standard self-cleaning mode according to the dust concentration P and the indoor air humidity T.
The self-cleaning control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When the first preset threshold<P<the second preset threshold and the second preset humidity value<T<the first preset humidity value, the standard self-cleaning mode of the air conditioner is executed.
The self-cleaning control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When the first preset threshold<P<the second preset threshold and T≧the first preset humidity value, the frosting time of the standard self-cleaning mode is reduced by the first preset time.
The self-cleaning control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When the first preset threshold<P<the second preset threshold and T≦the second preset humidity value, the frosting time of the standard self-cleaning mode is increased by the second preset time.
The self-cleaning control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When P≥the second preset threshold value and the second preset humidity value<T<the first preset humidity value, the frosting time of the standard self-cleaning mode is increased by the second preset time, and the standard self-cleaning The defrosting time of the cleaning mode is increased by the first preset time.
The self-cleaning control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When P≥the second preset threshold value and T≥the first preset humidity value, the defrosting time of the standard self-cleaning mode is increased by the first preset time.
The self-cleaning control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When P≥the second preset threshold and T≤the second preset humidity value, increase the frosting time of the standard self-cleaning mode by a third preset time, and increase the defrosting time of the standard self-cleaning mode The first preset time.
The air conditioner self-cleaning control method according to any one of claims 3 to 7, characterized in that,

The first preset time is any time between 0.5-1.5 minutes; the second preset time is any time between 4.5-5.5 minutes; the third preset time is between 9-11 minutes At any time; and/or

The first preset time is 1 minute; the second preset time is 5 minutes, and the third preset time is 10 minutes.
The air conditioner self-cleaning control method according to any one of claims 1 to 7, characterized in that, in step S110, the step of detecting the dust concentration P on the indoor unit heat exchanger comprises:

Using a blowing device to blow air to the heat exchanger of the indoor unit;

A dust sensor is used to detect the concentration of dust blown up by the blowing device.
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.