WO2019242702A1

WO2019242702A1 - Method for controlling air conditioner, and air conditioner

Info

Publication number: WO2019242702A1
Application number: PCT/CN2019/092138
Authority: WO
Inventors: 魏学帅; 吕静静; 王永涛; 王鹏臣; 单翠云; 关婷婷
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2018-06-21
Filing date: 2019-06-20
Publication date: 2019-12-26
Also published as: CN110631225B; CN110631225A

Abstract

The present invention belongs to the technical field of air conditioners and aims to solve the problems that when an existing air conditioner is cleaned by means of manual cleaning, a user cannot accurately determine when the air conditioner needs to be cleaned, such that the air conditioner cannot be cleaned in a timely manner, and when the air conditioner is cleaned by means of self-cleaning, since a cold air prevention program of the air conditioner has an impact on a fan current of an indoor unit, the air conditioner makes a false determination, such that same frequently executes self-cleaning. Therefore, the present invention provides a method for controlling an air conditioner, and an air conditioner. The air conditioner comprises an indoor unit. The control method comprises: when an air conditioner performs a heating operation, acquiring a fan current value of an indoor unit when a coil pipe temperature of the indoor unit is at a pre-set temperature; and selectively prompting, according to the fan current value, that the air conditioner needs to be cleaned. By means of the present invention, whether an air conditioner needs to be cleaned can be accurately determined, so as to prompt a user in a timely manner to clean the air conditioner, such that the situations where the air conditioner is dirty and blocked and a false determination occurs are prevented, thereby improving the user experience.

Description

Control method for air conditioner and air conditioner

Technical field

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

Background technique

The air conditioner is a device capable of cooling / heating the room. As time goes by, the ash accumulation on the indoor and outdoor units of the air conditioner will gradually increase. After the ash accumulation has accumulated to a certain extent, a large number of bacteria will grow, especially indoors. When the air flows through the indoor unit, it will carry a lot of dust and bacteria, so the air conditioner needs to be cleaned in time.

At present, the cleaning of an air conditioner generally requires manual cleaning or a self-cleaning device activated by pressing a button. However, because the user cannot accurately determine when the air conditioner needs to be cleaned, the air conditioner cannot be cleaned in a timely manner, thereby affecting the user. Experience. At present, some air conditioners also use self-cleaning methods. Generally, the fan current of the indoor unit is used to determine whether to perform self-cleaning of the indoor unit. However, air conditioners are generally equipped with anti-cold wind programs, that is, when the air conditioner is required for heating operation At this time, the protection program is set to prevent the cold air from blowing out when the air conditioner is powered on. The cold protection program is generally divided into two phases. In the first phase, after the air conditioner is powered on, the guide plate is closed and the fan is not started. The coil of the indoor unit is heated. When the coil temperature reaches the first temperature, it enters the second stage, the guide plate is still closed, and the fan is started. The fan runs with weak wind until the coil temperature reaches the second temperature, and the cold wind prevention program ends. During the air-conditioning process of the air conditioner, in the first phase of the anti-cold air program, the fan current value is zero because the fan is not started. In the second phase of the anti-cold air program, the fan is running with weak wind. The fan current value of the indoor unit is small and will continue to change, even with large fluctuations. Therefore, if the fan current value is obtained during the air-conditioning program of the air conditioner, it is easy to cause misjudgment of the air conditioner. When the indoor unit of the air conditioner is self-cleaning, the air conditioner is caused to perform the self-cleaning mode, which may cause the air conditioner to frequently open the self-cleaning mode. Although this can ensure the cleanliness of the air conditioner, it will cause waste of energy.

Therefore, there is a need in the art for a control method for an air conditioner and a corresponding air conditioner to solve the above problems.

Summary of the Invention

In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that manual cleaning of the existing air conditioner cannot enable the user to accurately determine when the air conditioner needs to be cleaned, so that the air conditioner cannot be cleaned in time, and the air conditioner is In the cleaning method, since the anti-cold wind program of the air conditioner affects the fan current of the indoor unit, which causes the problem of misjudgment of the air conditioner and frequent self-cleaning, the present invention provides a control method for an air conditioner. Including the indoor unit, the control method includes: during the heating operation of the air conditioner, obtaining the fan current value of the indoor unit when the coil temperature of the indoor unit is at a preset temperature; and selectively prompting the air conditioner to be cleaned according to the fan current value. .

In a preferred technical solution of the above control method, the step of "optionally prompting the air conditioner to be cleaned according to the fan current value" specifically includes: calculating a change value of the fan current value relative to the standard current value; Value comparison; based on the comparison results, it is selectively prompted that the air conditioner needs to be cleaned.

In a preferred technical solution of the above control method, the step of “optionally prompting the air conditioner to be cleaned according to the comparison result” includes: if the change value is greater than a preset value, prompting the air conditioner to be cleaned.

In a preferred technical solution of the above control method, the step of "optionally prompting the air conditioner to be cleaned according to the comparison result" further includes: if the change value is not greater than a preset value, not prompting the air conditioner to be cleaned.

In a preferred technical solution of the above control method, the step of "indicating that the air conditioner needs to be cleaned" includes: changing an indicator light on the indoor unit to a warning color.

In a preferred technical solution of the above control method, the warning color is red.

In a preferred technical solution of the above control method, the change value is equal to the difference between the standard current value and the fan current value.

In a preferred technical solution of the above control method, the standard current value is a fan current value of the indoor unit when the air conditioner is completely clean and the coil temperature of the indoor unit is at a preset temperature.

In a preferred technical solution of the above control method, the preset temperature is a coil temperature of the indoor unit when the air conditioner is completely clean and the air conditioner has just completed a cold wind prevention program.

In another aspect, the present invention also provides an air conditioner including a controller configured to be capable of performing the above-mentioned control method.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, when the air conditioner is in heating operation, the fan current value of the indoor unit when the coil temperature of the indoor unit is at a preset temperature is obtained, and the fan current value is calculated relative to The change value of the standard current value is compared with the preset value. If the change value is greater than the preset value, the air conditioner needs to be cleaned. If the change value is not greater than the preset value, the air conditioner does not need to be cleaned. Through such a control method, the user can accurately determine whether the air conditioner needs to be cleaned. Compared with the method of manually cleaning the air conditioner in the prior art, when the air conditioner needs to be cleaned in the present invention, the user can immediately prompt the user about the air conditioner. Perform cleaning so that the air conditioner can be cleaned in a timely manner and improve the user experience. In addition, compared with the self-cleaning method of the air conditioner in the prior art, the fan current value of the indoor unit in the present invention is obtained when the coil temperature of the indoor unit reaches a preset temperature, and when the coil temperature reaches a preset temperature , It means that the air conditioner's anti-cold wind program has ended, so the fan current value of the indoor unit obtained at this time will not be affected by the air-conditioning anti-cold air program, so that the obtained indoor unit's fan current value is more accurate, because When the air conditioner executes the first phase of the anti-cold wind program, the fan of the indoor unit is not started, and the current value of the fan is zero. If the current value of the fan is obtained at this time, the air conditioner will inevitably execute the self-cleaning mode. Although the air conditioner's clean status can be guaranteed, if the air conditioner performs a self-cleaning mode once each time it is turned on, it will inevitably cause a great waste of energy, and when the air conditioner performs the second phase of the anti-cold wind program, the fan of the indoor unit Running on weak wind, the current value of the fan is very small and it is easy to fluctuate. The current value of the fan obtained at this time is also inaccurate, which will also make the air conditioner The self-cleaning mode is frequently performed due to misjudgment. Therefore, in the present invention, the fan current value of the indoor unit is obtained after the air conditioner executes the cold air prevention program, so that the influence of the cold air prevention program on the fan current value of the indoor unit can be avoided. As a result, the air conditioner frequently executes the self-cleaning mode, which further makes the time point at which the air conditioner needs to be cleaned more accurate, that is, the air conditioner is self-cleaned at the most appropriate time to improve the user experience.

Further, the standard current value is the fan current value of the indoor unit when the air conditioner is completely clean and the coil temperature of the indoor unit is at a preset temperature. When the air conditioner is completely clean, the standard current value is more feedbackable at this time. The degree of ash formation in the air conditioner during use, that is, the air conditioner is always compared with the fan current parameters in a completely clean state during use, which can more accurately feedback the degree of ash formation of the air conditioner, which is serious in the case of ash formation. The user can be promptly reminded that the air conditioner needs to be cleaned in time, and the user can be temporarily not prompted to clean the air conditioner when the ash is not formed and the degree of ash formation is within an acceptable range.

Furthermore, the method of prompting the air conditioner to be cleaned by taking the indicator light on the indoor unit to red can make the user more intuitively observe that the air conditioner needs to be cleaned, so that the user can manually clean the air conditioner or turn on the air conditioner in time. The self-cleaning mode of the air conditioner prevents serious blockage of the air conditioner due to untimely cleaning, thereby affecting the normal experience of the user.

In addition, the air conditioner further provided by the present invention on the basis of the above technical solution adopts the above-mentioned control method, and therefore has the technical effects of the above-mentioned control method. Compared with the existing air conditioner, the air conditioner of the present invention When cleaning is required, the user can be prompted to clean the air conditioner, so that the air conditioner can be cleaned in time, and the user experience is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart of a control method of the present invention;

2 is a flowchart of an embodiment of a control method according to the present invention;

FIG. 3 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.

detailed description

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

The existing air conditioner 10 using manual cleaning pointed out based on the background art cannot enable users to accurately determine when the air conditioner 10 needs to be cleaned, so that the air conditioner 10 cannot be cleaned in a timely manner, and the air conditioner 10 uses a self-cleaning method due to air conditioning. The anti-cold wind program of the air conditioner 10 affects the current of the fan 40 of the indoor unit 20, thereby causing a problem that the air conditioner 10 misjudges and frequently performs self-cleaning. The invention provides a control method for the air conditioner 10 and the air conditioner 10, which aims to enable the air conditioner 10 to prompt the user to clean the air conditioner 10 when cleaning is needed, so that the air conditioner 10 can be cleaned in time. To improve user experience.

Specifically, referring to FIGS. 1 and 3, the air conditioner 10 of the present invention includes an indoor unit 20. As shown in FIG. 1, the control method of the present invention includes: Step S102, the air conditioner 10 performs heating operation; Step S104, the air conditioner 10 During the heating operation, the fan current value of the indoor unit 20 is obtained when the coil temperature of the indoor unit 20 is at a preset temperature; step S106, according to the fan current value, the air conditioner 10 is selectively prompted to be cleaned. It should be noted that the current of the fan 40 of the indoor unit 20 can directly reflect the degree of ash formation of the air conditioner 10 because the load of the fan 40 is determined at a certain speed. When the load of the fan 40 increases at the same speed, Correspondingly, the current of the fan 40 is reduced, which means that the wind resistance of the fan 40 is increased, that is, the ash is formed on the indoor unit 20, and the more serious the ash is, the smaller the current of the fan 40 is. Therefore, the current through the fan 40 can be sufficient. The degree of ash formation of the indoor unit 20 of the air conditioner 10 is determined.

In addition, it should be noted that the preset temperature is the coil temperature of the indoor unit 20 when the air conditioner 10 is completely cleaned and the air conditioner 10 has just performed the cold protection program, that is, after the air conditioner 10 is powered on in a completely clean state The cold wind prevention program is started. When the air conditioner 10 finishes the cold wind prevention program, the coil temperature of the indoor unit 20 at this time is obtained, and the coil temperature is set to a preset temperature. The technical solution of the present invention is described in detail below with reference to specific embodiments.

Preferably, as shown in FIG. 2, the step of “selectively prompting the air conditioner 10 to be cleaned according to the current value of the fan” specifically includes: Step S208, calculating a change value of the fan current value relative to the standard current value; and changing the change value The comparison with the preset value may specifically include step S210, determining whether the change value is greater than the preset value; and selectively prompting the air conditioner 10 to be cleaned according to the comparison result. Further, the step of “selectively prompting the air conditioner 10 to be cleaned according to the comparison result” includes: if the change value is greater than a preset value, prompting the air conditioner 10 to be cleaned (step S212); if the change value is not greater than the preset value If the value is set, the air conditioner 10 is not prompted to be cleaned (step S214). Specifically, the above-mentioned change value is equal to the difference ΔI between the standard current value Ib and the fan current value If. That is, if the difference ΔI between the standard current value Ib and the fan current value If is greater than a preset value, it is prompted that the air conditioner 10 needs to be cleaned. If the difference △ I between the standard current value Ib and the fan current value If is not greater than the preset value Value, it does not indicate that the air conditioner 10 needs to be cleaned. In a possible embodiment, the preset value is set to 0.1A, that is, if △ I> 0.1A, it means that the dirty blockage of the indoor unit 20 is serious at this time, and the user needs to be prompted to clean the air conditioner 10, if △ If I≤0.1A, it means that there is no dirty blockage of the indoor unit 20 or the dirty blockage of the indoor unit 20 is still within an acceptable range. At this time, the user may not be prompted to clean the air conditioner 10 temporarily. Of course, the preset value is not limited to the above-mentioned example 0.1A. Those skilled in the art can flexibly set the specific value of the preset value in practical applications, as long as the cut-off point determined by the preset value can determine whether the air conditioner 10 needs to be cleaned. Just fine.

In addition, it should be noted that the above-mentioned standard current value can be measured before the air conditioner 10 leaves the factory, that is, when the air conditioner 10 is in a completely clean state, the indoor unit 20 is measured when the coil temperature of the indoor unit 20 is at a preset temperature. Standard current value. In addition, the standard current value can also be measured after the air conditioner 10 leaves the factory, that is, during the use of the air conditioner 10, the coil temperature of the indoor unit 20 acquired within a preset time during the preset time is The current value with the highest frequency among the fan current values is used as the standard current value. By calculating and sorting the frequency of multiple fan current values, the fan current value with the highest frequency is selected as the standard current value. Among them, the sampling of the fan current value The data can be 1000, 2000, or other numbers, and those skilled in the art can flexibly set the sampling number of the fan current value in practical applications. The preset time can be one day, one week, one month, or other set time value, as long as a plurality of fan current values obtained from the preset time can select a standard current value, which is specific to the preset time The adjustment and change of the values do not deviate from the principle and scope of the present invention, and should be limited to the protection scope of the present invention.

Further preferably, the step of “indicating that the air conditioner 10 needs to be cleaned” includes: changing the indicator light 60 on the indoor unit 20 to a warning color, wherein the indicator light 60 on the indoor unit 20 can be changed to red or yellow to Prompts the user that the air conditioner 10 needs to be cleaned. Those skilled in the art can flexibly set the specific color of the indicator 60 in practical applications, as long as the selection of the color can prompt the user to clean the air conditioner 10, of course. In actual applications, a sound device (such as a buzzer, a voice announcer, etc.) on the indoor unit 20 can also be used to prompt the user that the air conditioner 10 needs to be cleaned, or a combination of the indicator light 60 and the sound device The user is reminded that the air conditioner 10 needs to be cleaned. Those skilled in the art can flexibly set the specific prompting method for the user to clean the air conditioner 10 in practical applications. Such adjustments and changes to the prompting method do not deviate from the principle of the present invention. And the scope should be limited within the protection scope of the present invention.

In addition, the air conditioner 10 of the present invention further includes a controller 30 configured to be able to execute the above-mentioned control method. That is, the controller 30 can help the user accurately determine whether the air conditioner 10 needs to be cleaned, and can prompt the user when the air conditioner 10 needs to be cleaned, so that the air conditioner 10 can be cleaned in time.

It should be noted that when the user is prompted that the air conditioner 10 needs to be cleaned, the indoor unit 20 of the air conditioner 10 can be cleaned separately, and the indoor unit 20 and the outdoor unit of the air conditioner 10 can be cleaned simultaneously because the indoor unit 20 appears It can also indirectly feedback the outdoor unit to a certain extent when the dirty blockage has reached the time when the dirty blockage occurs. In addition, in the present invention, the specific cleaning method for the air conditioner 10 may be manual cleaning, or it may be a self-cleaning device that starts the air conditioner 10 for cleaning.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the accompanying drawings. However, those skilled in the art can easily 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 related technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present invention.

Claims

A control method for an air conditioner, the air conditioner includes an indoor unit, wherein the control method includes:

During the heating operation of the air conditioner, obtaining a fan current value of the indoor unit when the coil temperature of the indoor unit is at a preset temperature;

Selectively prompting the air conditioner to be cleaned according to the fan current value.
The control method according to claim 1, wherein the step of "selectively prompting the air conditioner to be cleaned according to the current value of the fan" specifically includes:

Calculating a change value of the fan current value relative to a standard current value;

Comparing the change value with a preset value;

According to the comparison result, the air conditioner is selectively prompted to be cleaned.
The control method according to claim 2, wherein the step "selectively prompting said air conditioner to be cleaned according to a comparison result" includes:

If the change value is greater than the preset value, it is prompted that the air conditioner needs to be cleaned.
The control method according to claim 3, wherein the step of "optionally prompting said air conditioner to be cleaned according to a comparison result" further comprises:

If the change value is not greater than the preset value, the air conditioner is not prompted to be cleaned.
The control method according to claim 2, wherein the step of "indicating that the air conditioner needs to be cleaned" includes:

Changing the indicator light on the indoor unit to a warning color.
The control method according to claim 5, wherein the warning color is red.
The control method according to claim 2, wherein the change value is equal to a difference between the standard current value and the fan current value.
The control method according to claim 2, wherein the standard current value is a fan current value of the indoor unit when the air conditioner is completely clean and a coil temperature of the indoor unit is at the preset temperature.
The control method according to any one of claims 1 to 8, wherein the preset temperature is a coil of the indoor unit when the air conditioner is completely cleaned and the air conditioner has just completed a cold wind prevention program temperature.
An air conditioner including a controller, wherein the controller is configured to be capable of performing the control method according to any one of claims 1 to 9.