WO2020187253A1

WO2020187253A1 - Humidification control method for self-cleaning of air conditioner

Info

Publication number: WO2020187253A1
Application number: PCT/CN2020/079952
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: CN109916031A; CN109916031B

Abstract

The present invention belongs to the technical field of air conditioners, and specifically provides a humidification control method for self-cleaning of an air conditioner. In order to improve the self-cleaning effect of an air conditioner, the humidification control method for self-cleaning of an air conditioner provided by the present invention comprises: in cases where the air conditioner needs to perform self-cleaning, acquiring a current indoor air humidity and the PM2.5 value of the indoor air; calculating, according to the PM2.5 value, a frosting strength and a target indoor air humidity required to satisfy the frosting strength; and controlling the amount of humidification for the indoor air according to the current indoor air humidity and the target indoor air humidity. In the present invention, the amount of humidification for the indoor air is controlled, so as to effectively avoid the cases where the humidity of the indoor air is too low to reach the preset frosting strength and the cases where the humidification for the indoor air continues even when the humidity of the indoor air is too high, thereby ensuring the frosting thickness of the air conditioner in a self-cleaning process, further improving the self-cleaning effect of the air conditioner.

Description

Air conditioner self-cleaning humidification control method

Technical field

The invention belongs to the technical field of air conditioners, and specifically provides a self-cleaning humidification 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. 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.

When the air conditioner is performing self-cleaning, the effect of self-cleaning has a great relationship with the intensity of frost, and the intensity of frost has a great relationship with indoor humidity. When the indoor air quality is poor, if the moisture in the indoor air is used for frosting, it will also bring in the dust in the air and affect the self-cleaning effect. Moreover, excessive humidification will cause the self-cleaning frost to be too thick, which may cause certain damage to the machine.

Therefore, the present invention proposes a self-cleaning humidification control method for an air conditioner to solve the above-mentioned problems.

Summary of the invention

In order to solve the above-mentioned problems in the prior art, that is, in order to improve the self-cleaning effect of the air conditioner, the present invention proposes a self-cleaning and humidifying control method for an air conditioner. The method of self-cleaning the indoor unit, the air conditioner self-cleaning humidification control method includes the following steps: S110, in the case where the air conditioner needs to perform self-cleaning, obtain the current humidity of the indoor air and indoor air PM2. 5 value; S120, calculating the frosting intensity according to the PM2.5 value and the target humidity of the indoor air required to meet the frosting intensity; S130, according to the current humidity of the indoor air and the target humidity of the indoor air Control the amount of humidification of the indoor air; wherein the frosting intensity is the amount of frosting during the self-cleaning process of the air conditioner.

In the preferred embodiment of the above-mentioned air conditioner self-cleaning humidification control method, step S130 specifically includes: when the current humidity of the indoor air is lower than the target humidity, calculating the humidity of the indoor air according to the target humidity. The amount of humidification water required by the target humidity; and the indoor air is humidified according to the amount of humidification water.

In the preferred embodiment of the above air conditioner self-cleaning humidification control method, step S130 specifically includes: when the current humidity of the indoor air is not lower than the target humidity, not humidifying the indoor air.

In a preferred embodiment of the above air conditioner self-cleaning humidification control method, the air conditioner further includes a water storage cavity and a humidification module provided in the indoor unit, and the humidification module can mist the water in the water storage cavity The air conditioner self-cleaning and humidifying control method further includes: before humidifying the indoor air, obtaining water volume and water quality information in the water storage cavity; according to the water volume and water quality information It is determined whether to activate the humidification module; wherein the indoor air can be humidified after the humidification module is activated.

In a preferred embodiment of the above air conditioner self-cleaning humidification control method, the step of "determining whether to activate the humidification module according to the water volume and the water quality information" includes: when the water volume is greater than or equal to the humidifying water volume and the water quality information When the preset water quality standard is met, the humidification module is activated.

In a preferred embodiment of the above air conditioner self-cleaning humidification control method, the step of "determining whether to activate the humidification module according to the water quantity and the water quality information" includes: when the water quantity is less than the humidification water quantity and the water quality When the information meets the preset water quality standard, the humidification module is activated and a reminder message is sent; wherein the reminder message is used to remind the user to add water to the water storage cavity.

In a preferred embodiment of the above air conditioner self-cleaning humidification control method, the step of "determining whether to activate the humidification module according to the water volume and the water quality information" includes: when the water quality information does not meet the preset water quality standard, not Start the humidification module and send a reminder message; wherein the reminder message is used to remind the user to replace the water in the water storage cavity.

In a preferred embodiment of the above air conditioner self-cleaning and humidifying control method, the air conditioner self-cleaning and humidifying control method further includes: setting the operating frequency of the humidifying module to a first preset when the humidifying module is activated Working frequency; obtaining the real-time temperature of the indoor unit coil; selectively adjusting the working frequency of the humidification module according to the real-time temperature.

In the preferred embodiment of the above air conditioner self-cleaning humidification control method, the step of “selectively adjusting the operating frequency of the humidification module according to the real-time temperature” specifically includes: making the operating frequency of the humidification module follow the real-time temperature Decrease and increase, and when the real-time temperature drops to a preset temperature, the operating frequency of the humidification module is fixed at a second preset operating frequency; wherein, the second preset frequency>the first preset Set frequency.

In the preferred embodiment of the above air conditioner self-cleaning humidification control method, the step of “selectively adjusting the operating frequency of the humidification module according to the real-time temperature” further includes: when the humidification module is in the second preset After the operating frequency is operated for the first preset time, the operating frequency of the humidification module is reduced with the increase of the operating time, and after the humidification module continues to work for the second preset time, the humidification module is stopped.

When the air conditioner needs to perform self-cleaning, the self-cleaning effect of the air conditioner has a great relationship with the intensity of frosting, and the intensity of frosting has a great relationship with indoor humidity. If the frost is too thick, it may cause certain damage to the air conditioner. Therefore, the present invention controls the amount of humidification of the indoor air, thereby effectively avoiding the situation that the indoor air humidity is too low to reach the preset frosting intensity and avoiding the situation that the indoor air is still humidified due to the high humidity of the indoor air, ensuring that The frosting thickness of the air conditioner during the self-cleaning process further enhances 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 invention self-cleans the indoor unit by first forming frost and then defrosting. Referring to Fig. 1, Fig. 1 is a main flowchart of the self-cleaning and humidifying control method of an air conditioner of the present invention. As shown in FIG. 1, the self-cleaning humidification control method of an air conditioner of the present invention includes the following steps: S110, when the air conditioner needs to perform self-cleaning, obtain the current humidity of the indoor air and the PM2.5 value of the indoor air; S120, Calculate the frosting intensity and the target humidity of the indoor air required to meet the frosting intensity according to the PM2.5 value; S130, control the humidification amount of the indoor air according to the current humidity of the indoor air and the target humidity of the indoor air; among them, the frosting intensity The amount of frost during the self-cleaning process of the air conditioner.

Specifically, in step S130, when the current humidity of the indoor air is lower than the target humidity, the amount of humidification water required to humidify the indoor air to the target humidity is calculated according to the target humidity, and then the indoor air is humidified according to the humidification water amount. When the current humidity of the indoor air is not lower than the target humidity, it indicates that the current humidity of the indoor air can meet the preset frosting intensity, so the indoor air is not humidified. In this way, by controlling the amount of humidification of the indoor air, the situation that the indoor air humidity is too low to reach the preset frosting intensity and the situation that the indoor air is continuously humidified due to the high humidity of the indoor air can be effectively avoided. The frosting thickness of the air conditioner during the self-cleaning process further enhances the self-cleaning effect of the air conditioner.

Those skilled in the art can understand that the turbidity of the indoor heat exchanger is different, the frosting intensity usually required is also different, and the target humidity of the indoor air required is also different, that is, the final humidification amount is also different. Therefore, in the above step S120, the present invention calculates the frosting intensity required by the indoor unit based on the PM2.5 value of the indoor air. For example, because the PM2.5 value of indoor air can reflect the turbidity of the indoor heat exchanger, the higher the PM2.5 value, the dirtier the indoor heat exchanger, that is, the greater the frosting intensity required. Therefore, those skilled in the art can obtain the functional relationship between the PM2.5 value of indoor air and the frosting intensity through experiments, and then only need to detect the PM2.5 value of indoor air to determine the frosting intensity required by the air conditioner . The target humidity required to reach the frosting intensity can be determined through experiments. In this way, in step S130, when the current humidity of the indoor air is detected, it only needs to be compared with the target humidity value. In addition, if the current humidity is lower than the target humidity, the target humidity value minus the current humidity value is the humidity value that needs to be humidified, and the required humidification amount can be determined according to the humidity value needed to ensure that the air conditioner is self-cleaning The amount of frost in the process to improve the self-cleaning effect.

In a specific embodiment, a water storage cavity and a humidification module may be provided on the indoor unit, and the humidification module is used to atomize the water in the water storage cavity to humidify the indoor air. After step S130, the air conditioner self-cleaning and humidification control method of the present invention further includes: when the indoor air needs to be humidified (that is, the current humidity of the indoor air is lower than the target humidity), acquiring the water volume and water quality information in the water storage cavity; Determine whether to activate the humidification module according to the water volume and water quality information. After the humidification module is activated, the indoor air can be humidified. Specifically, when the water volume is greater than or equal to the humidification water volume and the water quality information meets the preset water quality standard, the humidification module is activated. When the water volume is less than the humidification water volume and the water quality information meets the preset water quality standards, the humidification module is activated and a reminder message is sent; among them, the reminder message is used to remind the user to add water to the water storage cavity. When the water quality information does not meet the preset water quality standards, the humidification module is not activated and a reminder message is sent; among them, the reminder message is used to remind the user to replace the water in the water storage cavity. Those skilled in the art can understand that if poor water quality is used to humidify the indoor air, it may pollute the indoor air, causing dust in the air to be brought in when frosting, which affects the effect of self-cleaning. Only clean water can achieve better results. Good cleaning effect. Therefore, only when the water quality information meets the preset water quality standard can the humidification module humidify the indoor air to prevent indoor air pollution.

In a specific implementation, when the humidification module is started for cleaning, that is, the current air humidity is lower than the target humidity, and the water volume and water quality in the water storage cavity also meet the requirements. At this time, the self-cleaning humidification control method of the air conditioner of the present invention further includes: setting the working frequency of the humidifying module to the first preset working frequency; obtaining the real-time temperature of the indoor unit coil; and selectively adjusting the operation of the humidifying module according to the real-time temperature frequency. In the self-cleaning process of the air conditioner, the temperature of the heat exchanger of the indoor unit is gradually reduced, so in order to achieve a better frosting effect, the operating frequency of the humidification module can be changed with the temperature of the heat exchanger of the indoor unit. Specifically, when just entering the self-cleaning process, the operating frequency of the humidification module is set to the first preset operating frequency, and it is assumed that the value of the first preset operating frequency is 1. Then obtain the real-time temperature of the indoor unit coil, and make the working frequency of the humidification module increase with the decrease of the real-time temperature, and when the real-time temperature drops to the preset temperature, fix the working frequency of the humidification module at the second preset working frequency . Wherein, the second preset frequency>the first preset frequency. It should be noted that the preset temperature can be determined by those skilled in the art through experiments to determine a reasonable temperature value. For example, at the temperature value, the operating frequency of the humidification module is fixed at 1.5 or 2 or other reasonable operating frequencies. It should be noted that the process of increasing the operating frequency of the humidification module as the real-time temperature decreases can be linear or non-linear, which can be determined by those skilled in the art through experiments according to actual application scenarios.

Further, after the humidification module works at the second preset working frequency for the first preset time, the working frequency of the humidification module is reduced as the working time increases, and after the humidification module continues to work for the second preset time, the humidification module is stopped jobs. Both the first preset time and the second preset time can be flexibly determined by those skilled in the art according to actual conditions, and the first preset time and the second preset time are not limited here.

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 replacements to the relevant technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present invention.

Claims

A self-cleaning and humidifying control method for an air conditioner. The air conditioner includes an indoor unit and self-cleaning the indoor unit by first forming frost and then defrosting. The method is characterized in that the air conditioner self-cleaning and humidifying control method includes The following steps:

S110: Under the condition that the air conditioner needs to perform self-cleaning, obtain the current humidity of the indoor air and the PM2.5 value of the indoor air;

S120: Calculate the frosting intensity and the target humidity of the indoor air required to meet the frosting intensity according to the PM2.5 value;

S130: Control the amount of humidification of the indoor air according to the current humidity of the indoor air and the target humidity of the indoor air;

Wherein, the frosting intensity is the amount of frosting during the self-cleaning process of the air conditioner.
The self-cleaning and humidifying control method of an air conditioner according to claim 1, wherein step S130 specifically includes:

When the current humidity of the indoor air is lower than the target humidity, calculating the amount of humidification water required to humidify the indoor air to the target humidity according to the target humidity;

The indoor air is humidified according to the humidification water amount.
The self-cleaning and humidifying control method of an air conditioner according to claim 2, wherein step S130 specifically includes:

When the current humidity of the indoor air is not lower than the target humidity, the indoor air is not humidified.
The self-cleaning humidification control method of an air conditioner according to any one of claims 1 to 3, wherein the air conditioner further comprises a water storage cavity and a humidification module provided in the indoor unit, and the humidification module can Atomizing the water in the water storage cavity to humidify the indoor air;

The air conditioner self-cleaning and humidifying control method further includes:

Before humidifying the indoor air, acquiring water volume and water quality information in the water storage cavity;

Judging whether to activate the humidification module according to the water quantity and the water quality information;

Wherein, the indoor air can be humidified after the humidification module is activated.
The self-cleaning humidification control method of an air conditioner according to claim 4, wherein the step of "determining whether to activate the humidification module according to the water quantity and the water quality information" comprises:

When the water quantity is greater than or equal to the humidification water quantity and the water quality information meets a preset water quality standard, the humidification module is activated.
The self-cleaning humidification control method of an air conditioner according to claim 4, wherein the step of "determining whether to activate the humidification module according to the water quantity and the water quality information" comprises:

When the water volume is less than the humidification water volume and the water quality information meets a preset water quality standard, activate the humidification module and send out a reminder message;

Wherein, the reminder information is used to remind the user to add water to the water storage cavity.
The self-cleaning humidification control method of an air conditioner according to claim 4, wherein the step of "determining whether to activate the humidification module according to the water quantity and the water quality information" comprises:

When the water quality information does not meet the preset water quality standard, do not start the humidification module and send a reminder message;

Wherein, the reminding information is used to remind the user to replace the water in the water storage cavity.
The self-cleaning and humidifying control method of an air conditioner according to claim 4, wherein the self-cleaning and humidifying control method of the air conditioner further comprises:

In the case of starting the humidification module, make the working frequency of the humidification module the first preset working frequency;

Acquiring the real-time temperature of the indoor unit coil;

The operating frequency of the humidification module is selectively adjusted according to the real-time temperature.
The self-cleaning humidification control method of an air conditioner according to claim 8, wherein the step of "selectively adjusting the operating frequency of the humidification module according to the real-time temperature" specifically comprises:

Increasing the operating frequency of the humidification module as the real-time temperature decreases, and when the real-time temperature drops to a preset temperature, fixing the operating frequency of the humidification module at a second preset operating frequency;

Wherein, the second preset frequency>the first preset frequency.
The self-cleaning humidification control method of an air conditioner according to claim 9, wherein the step of “selectively adjusting the operating frequency of the humidification module according to the real-time temperature” further comprises:

After the humidification module works at the second preset working frequency for the first preset time, the working frequency of the humidification module is reduced with the increase of working time, and the humidification module continues to work for the second preset time After time, the humidification module is stopped working.