WO2019242700A1

WO2019242700A1 - Method for controlling air conditioner, and air conditioner

Info

Publication number: WO2019242700A1
Application number: PCT/CN2019/092136
Authority: WO
Inventors: 吕静静; 魏学帅; 王永涛; 王鹏臣; 闫宝升; 尹晓英
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: CN110631169A

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, the air conditioner easily 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: acquiring an environment temperature value; acquiring a corresponding pre-set current value according to the environment temperature value; taking the pre-set current value as a standard current value; acquiring a fan current value of an indoor unit; and selectively prompting, according to the fan current value and the standard current value, that an 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. An air conditioner with a self-cleaning function generally uses a single value to determine whether to perform the self-cleaning mode. It is easy to misjudge. This makes the air conditioner still perform the self-cleaning mode when the air conditioner does not need to perform self-cleaning. This affects the normal user experience and consumes a lot 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 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: obtaining an ambient temperature value; The temperature value is used to obtain the corresponding preset current value; the preset current value is used as the standard current value; the fan current value of the indoor unit is obtained; according to the fan current value and the standard 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 and the standard current value" specifically includes: calculating a change value of the fan current value relative to the standard current value; The value is compared with a preset value; according to the comparison result, 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 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 step of "obtaining an ambient temperature value" specifically includes: obtaining a temperature value at an air outlet of the indoor unit.

In a preferred technical solution of the above control method, the step of "obtaining a temperature value at the indoor unit air outlet" includes: obtaining a temperature value at the indoor unit air outlet detected by the temperature sensor.

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, the corresponding preset current value is obtained through the obtained ambient temperature value, and the preset current value is used as the standard current value to obtain the fan current of the indoor unit. Value, and then calculate the change value of the fan current value of the indoor unit relative to the standard current value, and then compare the change value with the preset value, and selectively prompt the air conditioner to be cleaned according to the comparison result. If the change value is greater than the preset value , It indicates that the air conditioner needs to be cleaned. If the change value is not greater than the preset value, it does not indicate 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, since the standard current value in the present invention is obtained through a preset temperature compensation conversion formula or a temperature current comparison table, it corresponds to the currently obtained ambient temperature value. The current value makes the selected standard current value more accurate, which can avoid the misjudgment of the air conditioner, and then makes the time node of the air conditioner to be cleaned more accurate, that is, the air conditioner is self-cleaned at the most appropriate time. Improve user experience.

Further, the preset current value is a fan current value of the indoor unit that is preset before the air conditioner leaves the factory, that is, a current value preset according to the ambient temperature when the air conditioner is completely clean. The preset current value It can 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. On the basis of eliminating the impact of ambient temperature on the fan current, it can More accurate feedback of the ashing degree of the air conditioner, it can prompt the user to clean the air conditioner when the ashing is serious, and it can temporarily not prompt the user to the air conditioner when the ashing is not and the ashing degree is within an acceptable range. Clean it.

Furthermore, the ambient temperature value is the temperature value at the indoor unit air outlet detected by the temperature sensor. The temperature value at the indoor unit air outlet is most in line with the effect of the ambient temperature on the fan current, so that the obtained value is related to the ambient temperature value. The corresponding preset current value is more accurate, even if the standard current value obtained is more accurate, so that the air conditioner judges the time node that needs to be cleaned more accurately.

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.

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 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;

4 is a voltage and temperature comparison table of the control method of the present invention;

5 is a schematic structural block 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 based on the background art cannot enable the user 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 is self-cleaning and easy to use. The air conditioner 10 has a problem of misjudgment 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 FIG. 5, 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, obtaining an ambient temperature value; Step S104, obtaining a corresponding one according to the ambient temperature value. The preset current value; step S106, using the preset current value as the standard current value; step S108, obtaining the fan current value of the indoor unit 20; step S110, selectively prompting the air conditioner 10 according to the fan current value and the standard current value Be cleaned. It should be noted that the magnitude of the fan current of the indoor unit 20 can directly reflect the degree of ash formation of the air conditioner 10 because the load of the fan is determined at a certain ambient temperature. When the load of the fan increases at the same ambient temperature, the corresponding Ground, the fan current decreases, which means that the wind resistance of the fan increases, that is to say, the ash is formed on the indoor unit 20, and the more serious the ash is, the smaller the fan current is. Therefore, the air conditioner 10 can be fully judged by the magnitude of the fan current. The degree of ash formation of the indoor unit 20 of FIG.

In addition, it should be noted that the above-mentioned preset current value may be a fan current value of the indoor unit 20 that is preset before the air conditioner 10 leaves the factory, that is, when the air conditioner 10 is in a completely clean state, it is detected that the air conditioner 10 is at The fan current of the indoor unit 20 under different ambient temperatures, and then set the temperature compensation conversion formula or temperature current comparison table according to the detection data. During the operation of the air conditioner 10, after obtaining the ambient temperature value of the air conditioner 10, it can be set in advance A good temperature compensation formula or temperature and current comparison table obtains a preset current value corresponding to the ambient temperature value, and uses the preset current value as a standard current value. For example, if the test data shows that the fan current value and the ambient temperature change linearly, you can set a temperature compensation conversion formula based on the test data, and select the ambient temperature change interval as T1 (TI can be the lowest value during the operation of the air conditioner 10 Ambient temperature value) and T2 (T2 can be the highest ambient temperature value during the operation of the air conditioner 10), the preset current values corresponding to the ambient temperature values T1 and T2 are I1 and I2, and the difference between T2 and T1 is △ T, the difference between I1 and I2, △ I, and the temperature compensation coefficient k is equal to the ratio of △ T and △ I. During the operation of the air conditioner 10, if the obtained ambient temperature value is T0, the preset current value I0 is equal to the environment. The temperature value T0 is multiplied by the temperature compensation coefficient k, that is, I0 = k × T0, and the preset current value I0 is used as the standard current value. In a possible embodiment, the fan current value of the indoor unit 20 is I1 when the ambient temperature value is 0 ° C, and the fan current value of the indoor unit 20 is I2 when the ambient temperature value is 40 ° C. Stored in the air conditioner 10, during the operation of the air conditioner 10, if the obtained ambient temperature value is 20 ° C, the corresponding current value I = [(I1-I2) / (40 ° C-0 ° C)] × 20 ℃, the calculated current value I is taken as the standard current value. Of course, the above-mentioned preset current value may also be the fan current value of the indoor unit 20 that is preset before the air conditioner 10 leaves the factory, that is, during the use of the air conditioner 10, according to a preset program, within a preset time Obtain the fan current value corresponding to the ambient temperature value, store the collected ambient temperature value and fan current value in the air conditioner 10, and form a fan current value comparison table corresponding to the ambient temperature value, that is, a temperature current comparison table After the temperature and current comparison table is set, the air conditioner 10 may obtain a preset current value corresponding to the currently obtained ambient temperature value according to the temperature and current comparison table, and use the preset current value as a standard current value. The preset time can be arbitrarily set for a day, a week, or a month, as long as the fan current value corresponding to the ambient temperature value can be obtained within the preset time.

Preferably, the step of “obtaining an ambient temperature value” specifically includes: obtaining a temperature value at an air outlet of the indoor unit 20. Further, or, the step of "obtaining a temperature value at the air outlet of the indoor unit 20" includes obtaining a temperature value at the air outlet of the indoor unit 20 detected by the temperature sensor 70. 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 control method may include: step S202, the panel controller 31 obtains an ambient temperature value; step S204, the panel controller 31 of the indoor unit 20 (the panel controller 31 refers to an operation mode capable of controlling the air conditioner 10, (Controller for information such as wind speed and temperature) After obtaining the temperature value at the air outlet of the indoor unit 20 detected by the temperature sensor 70, according to a preset temperature compensation formula or a temperature current comparison table, a value corresponding to the ambient temperature is obtained Step S206, using the preset current value as the standard current value, step S208, the motor controller 32 obtains the fan current value of the indoor unit 20, and step S210, the motor controller 32 of the indoor unit 20 passes the sampling circuit After obtaining the fan current value of the indoor unit 20, the fan current value is transmitted to the panel controller 31, step S212. After the panel controller 31 receives the fan current value, calculates the change value of the fan current value relative to the standard current value, and Compare the change value with the preset value (specifically, step S214, determine whether the change value is greater than the preset value). If the change value is greater than the preset value, it prompts the air conditioner 10 It is cleaned (step S216); If the variation is not greater than the preset value, no prompt needs to be cleaned air conditioner 10 (step S218). 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.

Example two

As shown in FIG. 3, the control method may include: Step S302, the panel controller 31 obtains the ambient temperature value; Step S304, the panel controller 31 of the indoor unit 20 obtains the temperature at the air outlet of the indoor unit 20 detected by the temperature sensor 70 The temperature value is transmitted to the motor controller 32 of the indoor unit 20. In step S306, after receiving the temperature value, the motor controller 32 obtains the ambient temperature according to a preset temperature compensation formula or a temperature current comparison table. Corresponding to the preset current value, step S308, using the preset current value as the standard current value, step S310, the motor controller 32 obtains the fan current value of the indoor unit 20, and step S312, the motor controller 32 of the indoor unit 20 After obtaining the fan current value of the indoor unit 20 through the sampling circuit, calculate the change value of the fan current value relative to the standard current value, and compare the change value with a preset value (specifically, it can be determined in step S314 whether the change value is greater than the preset value) If the change value is greater than the preset value, it is prompted that the air conditioner 10 needs to be cleaned (step S316); if the change value is not greater than the preset value, it is not prompted that the air conditioner 10 needs to be cleaned (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, 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 panel controller 31 of the indoor unit 20 can transmit the obtained ambient temperature value to the motor controller 32 of the indoor unit 20 through a speed regulation voltage line. The speed regulation voltage line is a A transmission line is connected between the panel controller 31 and the motor controller 32. The speed regulating voltage line can transmit a voltage signal. The panel controller 31 transmits a voltage signal to the motor controller 32 through the speed regulating voltage line to adjust the speed of the motor. The invention divides the voltage signal transmitted by the speed regulating voltage line into a motor speed regulating voltage signal and a temperature communication voltage signal. In a possible embodiment, a voltage signal with a transmission voltage value of 0V to 6.5V is set as a motor speed regulation voltage signal, that is, when a transmission voltage value between 0V and 6.5V represents a speed regulation signal, the transmission is performed. The voltage signal with a voltage value of 8V ~ 12V is set as a temperature communication voltage signal, that is, when the transmission voltage value is between 8V ~ 12V, it represents a temperature signal. A comparison table of the transmission voltage value and the ambient temperature value is set in advance. That is, the voltage and temperature comparison table (as shown in FIG. 4) is stored in the panel controller 31 and the motor controller 32 respectively. If the obtained ambient temperature value is 0 ° C, the panel controller 31 uses the voltage and temperature comparison table (such as (Shown in FIG. 4) If the transmission voltage value is found to be 8V, the panel controller 31 transmits a voltage signal with a voltage value of 8V to the motor controller 32 through the speed regulating voltage line. The motor controller 32 receives a voltage value of 8V. After the voltage signal, check the ambient temperature value through the voltage and temperature comparison table (as shown in Figure 4) to 0 ° C, that is, complete the transmission of the ambient temperature value through the speed regulating voltage line. Of course, the transmission voltage value and the ambient temperature value are not limited to these values in this table (as shown in FIG. 4), and those skilled in the art can flexibly set the specific values of the transmission voltage value and the ambient temperature value in actual applications, as long as One-to-one correspondence between the transmission voltage value and the ambient temperature value is sufficient. Of course, a new communication line can also be added between the panel controller 31 and the motor controller 32 to directly transmit the temperature value, that is, the temperature value is directly transmitted through the communication line, and there is no need to convert and transmit the voltage value, or alternatively, through the infrared temperature The transmission system transmits the temperature value, that is, the temperature communication information is transmitted through the infrared transmitting head of the panel controller 31, and the temperature receiving information is received by the integrated receiving head of the motor controller 32. Those skilled in the art can flexibly set it in practical applications. The specific method of temperature transmission is only required to transmit the ambient temperature value acquired by the panel controller 31 to the motor controller 32.

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.

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:

Get the ambient temperature value;

Obtaining a corresponding preset current value according to the ambient temperature value;

Using the preset current value as a standard current value;

Obtaining a fan current value of the indoor unit;

Selectively prompting the air conditioner to be cleaned according to the fan current value and the standard current value.
The control method according to claim 1, wherein the step of "selectively prompting said air conditioner to be cleaned according to said fan current value and said standard 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;

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 1, wherein the step of "obtaining an ambient temperature value" specifically includes:

Acquire a temperature value at an air outlet of the indoor unit.
The control method according to claim 8, wherein the step of "obtaining a temperature value at an air outlet of the indoor unit" includes:

Acquire a temperature value at an air outlet of the indoor unit detected by a temperature sensor.
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.