WO2019242699A1

WO2019242699A1 - Control method for air conditioner

Info

Publication number: WO2019242699A1
Application number: PCT/CN2019/092135
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: CN110631170B; CN110631170A

Abstract

The present invention relates to the technical field of air conditioners, and aims to solve the problem that the existing air conditioners require manual cleaning, and a user cannot accurately determine when an air conditioner needs to be cleaned, so that the air conditioner cannot be cleaned in time; in addition, for air conditioners capable of self-cleaning, the problem of frequent self-cleaning due to misjudgment would occur easily. For this reason, the present invention provides a control method for an air conditioner. The air conditioner comprises an indoor unit. The control method comprises: comparing a power-off duration of the indoor unit with a preset duration; if the power-off duration is greater than or equal to the preset duration, detecting a fan current value of the indoor unit; and according to the fan current value, selectively prompting about that the air conditioner needs to be cleaned. The present invention can accurately determine whether the air conditioner needs to be cleaned, thereby prompting a user to clean the air conditioner in time, preventing dirty and blocked situations and misjudgment from occurring in the air conditioner, and improving the user experience.

Description

Control method for air conditioner

Technical field

The invention belongs to the technical field of air conditioners, and specifically provides a control method for 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. Some current air conditioners also adopt a self-cleaning method. For example, a patent disclosed in CN107525209A discloses a self-cleaning control method for an air conditioner. Specifically, the control method includes detecting a current operating mode of the air conditioner. The current operating mode is a non-cooling mode, and the air conditioner is adjusted to a cooling mode; the speed of the motor of the indoor unit fan of the air conditioner and the first current value of the motor at the speed are detected; and the first current value of the motor at the speed and the The first preset current value at the rotation speed is compared. If the first current value is less than or equal to the first preset current value, the self-cleaning mode of the air conditioner is turned on, and the self-cleaning process of the indoor unit heat exchanger is performed. That is to say, the above patents use the fan current of the indoor unit to determine whether to perform self-cleaning of the indoor unit. However, during the operation of the air conditioner, the fan current of the indoor unit will continuously change, even appearing larger. , Especially when the fan of the indoor unit is running for a long time, the temperature of the fan rises sharply, which will aggravate the frequency and amplitude of the fluctuation of the fan current. When the fan current of the indoor unit decreases more during the fluctuation, the air conditioner may malfunction. It is judged that the self-cleaning mode of the air conditioner is performed when it is unnecessary to self-clean the indoor unit of the air conditioner. This will cause the air conditioner to frequently open the self-cleaning mode. Although this can ensure the cleanliness of the air conditioner, Will cause waste of energy.

Therefore, there is a need in the art for a control method for an 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 The cleaning method is easy to cause the air conditioner to misjudge and frequently perform self-cleaning. The present invention provides a control method for an air conditioner. The air conditioner includes an indoor unit. The control method includes: Compared with the preset time; if the power-off time is greater than or equal to the preset time, the fan current value of the indoor unit is detected; according to the fan current value, the air conditioner is selectively prompted 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 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 “optionally prompting the air conditioner to be cleaned according to the comparison result” includes: if the number of times the change value is greater than the preset value reaches three times, 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" includes: if the number of times the change value is greater than the preset value has not reached three times, the air conditioner does not need 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 measured before the air conditioner leaves the factory.

Those skilled in the art can understand that in the preferred technical solution of the present invention, the power-off time of the indoor unit is compared with a preset time; if the power-off time is greater than or equal to the preset time, the fan of the indoor unit is detected Current value, calculate the change value of the fan current value relative to the standard current value, and compare the change value 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, There is no indication that the air conditioner needs 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 present invention selectively reminds the air conditioner only according to the fan current value of the indoor unit obtained when the power-off time of the indoor unit is greater than or equal to a preset time. The air conditioner needs to be cleaned, that is, the air conditioner needs to be selectively reminded only according to the fan current value obtained in the cooling state. When the fan is in the cooling state, the fan current value is relatively stable and it is not easy to fluctuate, so that the obtained fan The current value is more accurate, avoiding the situation where the air conditioner is misjudged as the air conditioner is ashing due to the large fluctuation of the fan current value of the indoor unit, and frequent self-cleaning mode is performed, resulting in waste of energy, and the air conditioner needs to be cleaned. The time node is more accurate, that is, the air conditioner is self-cleaned at the most suitable time to improve the user experience.

Further, the air conditioner needs to be cleaned only when the number of times the change value is greater than the preset value reaches three times. With this setting, it is possible to further avoid misjudgment of the air conditioner due to large fluctuations in the fan current of the indoor unit. Therefore, it can be more accurately judged when the air conditioner needs to be cleaned, that is, the air conditioner is self-cleaned at the most appropriate time to improve the user experience.

Furthermore, the standard current value is the fan current value of the indoor unit measured before the air conditioner leaves the factory, that is, the fan current value of the indoor unit measured when the air conditioner is completely cleaned. When the air conditioner is completely cleaned, At this time, the selection of the standard current value can more feedback 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 the completely clean state during use, which can more accurately feedback the air conditioner. The degree of ash formation can prompt the user to clean the air conditioner when the ash formation is serious. When the ash is not formed and the ash formation level is within an acceptable range, the user can be temporarily not prompted to clean the air conditioner.

Furthermore, the way of prompting the air conditioner to be cleaned is to change the indicator light on the indoor unit to red, so that the user can 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.

BRIEF DESCRIPTION OF THE DRAWINGS

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

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

3 is a flowchart of a second embodiment of a control method according to 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 principles of the present invention, and are not intended to limit the protection scope of the present invention.

The manual cleaning of the existing air conditioner based on the background technology cannot enable the user to accurately determine when the air conditioner needs to be cleaned, so that the air conditioner cannot be cleaned in a timely manner, and the self-cleaning method of the air conditioner can easily cause the air conditioner to make mistakes Judgment and frequent self-cleaning issues. The invention provides a control method for an air conditioner, which aims to enable the air conditioner to prompt the user to clean the air conditioner when cleaning is needed, so that the air conditioner can be cleaned in time, thereby improving the user experience.

Specifically, the air conditioner of the present invention includes an indoor unit. As shown in FIG. 1, the control method of the present invention includes: Step S102, comparing the power-off time of the indoor unit with a preset time; Step S104, if the power-off time is greater than or If it is equal to the preset time, the fan current value of the indoor unit is detected. In step S106, according to the fan current value, the air conditioner is selectively prompted to be cleaned. It should be noted that the size of the fan current of the indoor unit can directly reflect the ash formation of the air conditioner, because the load of the fan is determined at a certain speed. When the load of the fan increases at the same speed, the fan current accordingly Decrease, it means that the wind resistance of the fan increases, that is to say, the ash is formed on the indoor unit, and the more serious the ash formation is, the smaller the fan current is. .

In addition, it should be noted that the power-off time of the indoor unit is the interval time between the indoor unit being powered off and the next time the indoor unit is powered on. If the power-off time is greater than or equal to the preset time, the indoor unit is The motor of the indoor unit has been cooled, and the fan current of the indoor unit is relatively stable at this time, so the accuracy of the fan current value of the indoor unit detected at this time is higher. In a possible implementation manner, the preset time may be set to 2 hours. That is, if the power-off time of the indoor unit is greater than or equal to 2 hours, the fan current value of the indoor unit is detected. If it is less than 2 hours, the power-off time of the indoor unit is not detected. Of course, when the power-off time of the indoor unit is less than 2 hours, the fan current value of the indoor unit can also be detected, but the fan current value detected at this time is invalid. In addition, the preset time is not limited to 2 hours. Those skilled in the art can set the preset time by experiment, or set the preset time by experience, as long as the duration determined by the preset time can make The fan of the indoor unit can be cooled. The technical solution of the present invention is described in detail below with reference to specific embodiments.

Example one

As shown in FIG. 2, the step of “selectively prompting the air conditioner to be cleaned according to the current value of the fan” specifically includes: Step S206, calculating a change value of the fan current value relative to the standard current value; and comparing the change value with a preset value Compare (specifically, step S208 may be performed to determine whether the change value is greater than a preset value); according to the comparison result, the air conditioner may be selectively prompted to be cleaned. Further, 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 (see step S210); if the change value is not greater than the preset value Value, it does not indicate that the air conditioner needs to be cleaned (see step S212). 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 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 , It does not indicate that the air conditioner needs to be cleaned. In a possible implementation manner, the preset value is set to 0.1A, that is, if △ I> 0.1A, it means that the indoor unit is seriously dirty at this time, and the user needs to be prompted to clean the air conditioner. If △ I≤ 0.1A, it means that the indoor unit has no dirty blockage or the indoor unit is still in an acceptable range at this time. At this time, the user may not be prompted to clean the air conditioner 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 demarcation point determined by the preset value can determine whether the air conditioner needs to be cleaned. can.

Example two

As shown in FIG. 3, 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; comparing the change value with a preset value; Comparing the results, it is selectively prompted that the air conditioner needs to be cleaned. Further, the step of “optionally prompting the air conditioner to be cleaned according to the comparison result” includes: if the change value is greater than the preset value three times, prompting the air conditioner to be cleaned (see step S316); if the change value If the number of times greater than the preset value has not reached three times, it is not prompted that the air conditioner needs to be cleaned (see step S318). 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, step S208 to step S310 are performed. If the difference ΔI between the standard current value Ib and the fan current value If is greater than a preset value, the counter value N is increased by 1; or step S208 to step S312 are performed, and if the standard current value Ib and If the difference ΔI of the fan current value is not greater than the preset value, the technical device value N is unchanged. When the technical device value N is 3, it indicates that the air conditioner needs to be cleaned. In a possible implementation manner, the preset value is set to 0.1A, that is, if △ I> 0.1A, the counter value N is increased by 1, and if △ I≤0.1A, the counter value N is unchanged. When the counter value N is When it is equal to 3, it means that the fan current of the indoor unit has been seriously attenuated. At this time, the indoor unit is seriously dirty, and the user needs to be prompted to clean the air conditioner. When the counter value N is less than 3, it means that the indoor unit is not dirty at this time. The blockage or dirty blockage of the indoor unit is still within an acceptable range, or a misjudgment occurs before the air conditioner. At this time, the user may not be prompted to clean the air conditioner 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 boundary point determined by the preset value can determine the dirty condition of the indoor unit. can.

In addition, it should be noted that the above-mentioned standard current value can be measured before the air conditioner leaves the factory, that is, when the air conditioner is in a completely clean state, the standard current value of the indoor unit when the motor of the indoor unit is in a cooling state is measured. In addition, the standard current value can also be measured after the air conditioner leaves the factory. That is, during the use of the air conditioner, the frequency of multiple fan current values of the indoor unit when the motor of the indoor unit obtained in a preset time is in a cooling state appears. The highest current value is used as the standard current value. By calculating and sorting the occurrence frequency of multiple fan current values, the fan current value with the highest occurrence frequency is selected as the standard current value. Among them, the sampling data of the fan current value can be 1,000, 2000 or other numbers, those skilled in the art can flexibly set the sampling number of fan current values 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 needs to be cleaned” includes: changing the indicator light on the indoor unit to a warning color, wherein the user may be prompted to change the indicator light on the indoor unit to red or yellow to indicate that the air conditioner needs to be cleaned. Those skilled in the art can flexibly set the specific color of the indicator light in actual applications, as long as the selection of the color can prompt the user to need to clean the air conditioner. Of course, in practical applications, it can also be done indoors. The sound device on the aircraft (such as a buzzer, voice announcer, etc.) emits a sound to remind the user that the air conditioner needs to be cleaned, or a combination of an indicator and a sound device reminds the user that the air conditioner needs to be cleaned. Those skilled in the art can In practical applications, the user can flexibly set a specific prompting method for cleaning the air conditioner. Such adjustment and change of the prompting method does not deviate from the principle and scope of the present invention, and should be limited to the protection scope of the present invention.

It should be noted that when the user is prompted that the air conditioner needs cleaning, the indoor unit of the air conditioner can be cleaned separately, and the indoor unit and outdoor unit of the air conditioner can be cleaned at the same time, because the indoor unit can also be cleaned when it is dirty. To some extent, the outdoor unit has indirectly feedbacked that the time limit for the dirty blockage has occurred. In addition, in the present invention, the specific cleaning method for the air conditioner may be manual cleaning or a self-cleaning device that starts the air conditioner 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:

Comparing the power-off time of the indoor unit with a preset time;

If the power-off time is greater than or equal to a preset time, detecting a fan current value of the indoor unit;

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 "selectively prompting said air conditioner to be cleaned according to a comparison result" includes:

If the number of times the change value is greater than the preset value reaches three times, it is prompted that the air conditioner needs to be cleaned.
The control method according to claim 5, wherein the step of "optionally prompting said air conditioner to be cleaned according to a comparison result" further comprises:

If the number of times the change value is greater than the preset value does not reach three times, 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 7, 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 measured before the air conditioner leaves the factory.