CN-122015271-A - Control method of air conditioner

CN122015271ACN 122015271 ACN122015271 ACN 122015271ACN-122015271-A

Abstract

The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner, which aims at solving the problem of how to improve the noise reduction effect while guaranteeing the refrigerating or heating effect of the air conditioner. The control method of the air conditioner comprises the steps of acquiring a real-time noise value of an outdoor unit, and selectively adjusting the frequency of a compressor, the opening of an electronic expansion valve and the rotating speed of an outdoor fan or adjusting the frequency of the compressor and the opening of the electronic expansion valve based on the real-time noise value so as to reduce the noise of the air conditioner. The control method of the air conditioner can quickly reduce noise when the real-time noise value is relatively large, so as to prolong the service life of the air conditioner and reduce energy consumption, prevent excessive noise in advance when the real-time noise value is relatively small, and simultaneously do not adjust the rotating speed of the outdoor fan, so as to ensure the heat exchange efficiency of the air conditioner, reduce the influence on the refrigerating or heating effect, and further realize the improvement of the noise reduction effect while ensuring the refrigerating or heating effect of the air conditioner.

Inventors

NIU PENGFEI
ZHANG FEI
LIU BAO
ZHANG KANG
ZHAO DAN
HE TAO
ZHENG HUANHUAN
MA ZHENGLONG

Assignees

青岛海尔空调器有限总公司

Dates

Publication Date: 20260512
Application Date: 20260209

Claims (10)

1. A control method of an air conditioner, the control method comprising: acquiring a real-time noise value of an outdoor unit; and selectively adjusting the frequency of the compressor, the opening of the electronic expansion valve and the rotating speed of the outdoor fan or adjusting the frequency of the compressor and the opening of the electronic expansion valve based on the real-time noise value so as to reduce the noise of the air conditioner.
2. The method for controlling an air conditioner according to claim 1, wherein, The step of selectively adjusting the frequency of the compressor, the opening degree of the electronic expansion valve, and the rotational speed of the outdoor fan or adjusting the frequency of the compressor and the opening degree of the electronic expansion valve based on the real-time noise value further includes: if the real-time noise value is larger than or equal to a set first noise threshold value, adjusting the frequency of the compressor, the opening of the electronic expansion valve and the rotating speed of the outdoor fan; and if the real-time noise value is larger than or equal to a set second noise threshold value and smaller than the first noise threshold value, adjusting the frequency of the compressor and the opening of the electronic expansion valve.
3. The method for controlling an air conditioner according to claim 2, wherein, Before the step of selectively adjusting the frequency of the compressor, the opening degree of the electronic expansion valve, and the rotational speed of the outdoor fan or adjusting the frequency of the compressor and the opening degree of the electronic expansion valve based on the real-time noise value, the control method further includes: Acquiring a real-time frequency value of the compressor, and marking the real-time frequency value at the moment as a reference frequency value; Acquiring a real-time opening value of the electronic expansion valve, and recording the real-time opening value at the moment as a reference opening value; Acquiring a real-time rotating speed value of the outdoor fan, and recording the real-time rotating speed value at the moment as a reference rotating speed value; Determining a first frequency adjustment range and a second frequency adjustment range based on the reference frequency value; determining a first opening adjustment range and a second opening adjustment range based on the reference opening value; determining a rotation speed adjustment range based on the reference rotation speed value; the step of "adjusting the frequency of the compressor, the opening degree of the electronic expansion valve, and the rotational speed of the outdoor fan" further includes: adjusting the frequency of the compressor in the first frequency adjustment range, adjusting the opening of the electronic expansion valve in the first opening adjustment range, and adjusting the rotating speed of the outdoor fan in the rotating speed adjustment range; the step of "adjusting the frequency of the compressor and the opening degree of the electronic expansion valve" further includes: Adjusting the frequency of the compressor in the second frequency adjustment range, and adjusting the opening of the electronic expansion valve in the second opening adjustment range; The reference frequency value is in the first frequency adjustment range and the second frequency adjustment range at the same time, the reference opening value is in the first opening adjustment range and the second opening adjustment range at the same time, and the reference rotating speed value is in the rotating speed adjustment range.
4. The method for controlling an air conditioner according to claim 3, wherein, The step of adjusting the frequency of the compressor in the first frequency adjustment range, adjusting the opening of the electronic expansion valve in the first opening adjustment range, and adjusting the rotation speed of the outdoor fan in the rotation speed adjustment range further includes: Controlling the compressor to decrease to a target frequency value at a set first rate; controlling the rotating speed of the outdoor fan to be reduced to a target rotating speed value; Controlling the opening of the electronic expansion valve to be reduced to a target opening value; The target frequency value is in the first frequency adjustment range, the target opening value is in the first opening adjustment range, and the target rotating speed value is in the rotating speed adjustment range.
5. The method for controlling an air conditioner according to claim 4, wherein, After the step of "controlling the opening degree of the electronic expansion valve to be reduced to the target opening degree value", the control method further includes: Judging whether the real-time noise value is larger than or equal to the first noise threshold value or not again; If the real-time noise value is greater than or equal to the first noise threshold value, controlling the compressor to raise the frequency to the reference frequency value; Controlling the rotating speed of the outdoor fan to the lower limit value of the rotating speed adjusting range; controlling the outdoor fan to rise at a set second speed; under the condition that the real-time rotating speed value is smaller than or equal to the upper limit value of the rotating speed adjusting range, if the real-time noise value is smaller than the first noise threshold value, the outdoor fan is controlled to stop increasing speed; wherein the first rotational speed threshold is less than the second rotational speed threshold.
6. The method for controlling an air conditioner according to claim 5, wherein, After the step of controlling the outdoor fan to rise at the set second rate, the control method further includes: If the real-time rotating speed value is larger than the upper limit value of the rotating speed adjusting range, controlling the rotating speed of the outdoor fan to the target rotating speed value; controlling the frequency of the compressor to the lower limit value of the first frequency adjustment range; Controlling the compressor to raise the frequency at a set third rate; And if the real-time frequency value is smaller than or equal to the upper limit value of the first frequency adjustment range, controlling the compressor to stop frequency raising if the real-time noise value is smaller than the first noise threshold value.
7. The method for controlling an air conditioner according to claim 6, wherein, After the step of "controlling the compressor to raise the frequency at the set third rate", the control method further includes: If the real-time frequency value is larger than the upper limit value of the first frequency adjustment range, controlling the frequency of the compressor to be reduced to a set minimum allowable frequency value and controlling the rotating speed of the outdoor fan to be reduced to a set minimum allowable rotating speed value or controlling the air conditioner to stop; Simultaneously or after the steps of "controlling the frequency of the compressor to be reduced to the set minimum allowable frequency value and controlling the rotational speed of the outdoor fan to be reduced to the set minimum allowable rotational speed value or controlling the air conditioner to be stopped", the control method further includes: And sending out reminding information to remind a user of noise reduction abnormality.
8. The method for controlling an air conditioner according to claim 3, wherein, The step of "adjusting the frequency of the compressor in the second frequency adjustment range and the opening degree of the electronic expansion valve in the second opening degree adjustment range" further includes: Controlling the compressor to perform frequency reduction at a set fourth rate; and adjusting the opening of the electronic expansion valve in the second opening adjusting range according to the real-time frequency value.
9. The method for controlling an air conditioner according to claim 8, wherein, Before the step of adjusting the opening degree of the electronic expansion valve in the second opening degree adjustment range according to the real-time frequency value, the control method further includes: judging whether the real-time frequency value is larger than or equal to the lower limit value of the second frequency adjustment range; The step of adjusting the opening degree of the electronic expansion valve in the second opening degree adjustment range according to the real-time frequency value further includes: If the real-time frequency value is larger than or equal to the lower limit value of the second frequency adjustment range, adjusting the opening of the electronic expansion valve in the second opening adjustment range according to the real-time frequency value; after the step of adjusting the opening degree of the electronic expansion valve in the second opening degree adjustment range according to the real-time frequency value, the control method further includes: judging whether the real-time noise value is smaller than the second noise threshold value or not; And if the real-time noise value is smaller than the second noise threshold value, stopping adjusting the frequency of the compressor and the opening degree of the electronic expansion valve.
10. The method for controlling an air conditioner according to claim 9, wherein, After the step of "determining whether the real-time frequency value is equal to or greater than the lower limit value of the second frequency adjustment range", the control method further includes: if the real-time frequency is smaller than the lower limit value of the second frequency adjustment range, controlling the frequency of the compressor to the reference frequency value; Controlling the compressor to raise the frequency at a set fourth rate; Judging whether the real-time frequency value is smaller than or equal to the upper limit value of the second frequency adjustment range; If the real-time frequency value is smaller than or equal to the upper limit value of the second frequency adjustment range, adjusting the opening of the electronic expansion valve in the second opening adjustment range according to the real-time frequency value again; judging whether the real-time noise value is smaller than the second noise threshold value or not again; And if the real-time noise value is smaller than the second noise threshold value, stopping adjusting the frequency of the compressor and the opening degree of the electronic expansion valve.

Description

Control method of air conditioner Technical Field The invention relates to the technical field of air conditioners, and particularly provides a control method of an air conditioner. Background With the continuous development of science and technology and the rapid progress of socioeconomic performance, the quality of life of residents is remarkably improved, and the use demands of consumers on household appliances are gradually changed from meeting basic functions to pursuing high-quality comfortable experience. The air conditioner is used as a core household appliance for adjusting indoor temperature and humidity and improving living and office environment, and becomes necessary equipment in daily life and production scenes, and comfort experience in the running process of the air conditioner is also an important consideration index for purchasing and using of consumers. In the operation process of the air conditioner, larger noise can be generated, the noise can influence the sensory experience of a user, the nature of the noise is the external appearance of the operation condition of the moving parts of the air conditioner, if the noise cannot be timely reduced, the abrasion of the moving parts can be increased, the service life of the air conditioner is influenced, and the energy consumption can be increased. The existing noise reduction method has poor noise reduction effect and has great influence on refrigerating and heating effects. Disclosure of Invention The present invention is directed to solving the above-mentioned technical problems, namely, how to improve the noise reduction effect while guaranteeing the cooling or heating effect of an air conditioner. The invention provides a control method of an air conditioner, which comprises the steps of obtaining a real-time noise value of an outdoor unit, and selectively adjusting the frequency of a compressor, the opening of an electronic expansion valve and the rotating speed of an outdoor fan or adjusting the frequency of the compressor and the opening of the electronic expansion valve based on the real-time noise value so as to reduce the noise of the air conditioner. Under the condition of adopting the technical scheme, when the real-time noise value is relatively large, in order to reduce the damage to the moving parts of the air conditioner, the noise needs to be reduced rapidly, so that the noise can be reduced rapidly and efficiently by adjusting the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor fan, the damage to the moving parts is reduced, the service life of the air conditioner is prolonged, and the energy consumption is reduced. In a specific embodiment of the control method of an air conditioner, the step of selectively adjusting the frequency of the compressor, the opening of the electronic expansion valve and the rotational speed of the outdoor fan or adjusting the frequency of the compressor and the opening of the electronic expansion valve based on the real-time noise value further includes adjusting the frequency of the compressor, the opening of the electronic expansion valve and the rotational speed of the outdoor fan if the real-time noise value is greater than or equal to a set first noise threshold value, and adjusting the frequency of the compressor and the opening of the electronic expansion valve if the real-time noise value is greater than or equal to a set second noise threshold value and less than the first noise threshold value. Under the condition that the technical scheme is adopted, when the real-time noise value is larger than or equal to the first noise threshold value, noise needs to be reduced and the noise severity is relatively high, so that the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor fan are adjusted, and when the real-time noise value is larger than or equal to the second noise threshold value and smaller than the first noise threshold value, noise needs to be reduced and the noise severity is relatively low, and therefore the noise reduction requirement can be met by adjusting the frequency of the compressor and the opening degree of the electronic expansion valve. In a specific embodiment of the control method of the air conditioner, before the step of selectively adjusting the frequency of the compressor, the opening of the electronic expansion valve and the rotational speed of the outdoor fan or adjusting the frequency of the compressor and the opening of the electronic expansion valve based on the real-time noise value, the control method further comprises the steps of acquiring the real-time frequency value of the compressor and recording the real-time frequency value at the moment as a reference frequency value, acquiring the real-time opening value of the electronic expansion valve and recording the real-time opening value at the moment as a reference