CN-121993888-A - Protective frequency-reducing method and related device for compressor

CN121993888ACN 121993888 ACN121993888 ACN 121993888ACN-121993888-A

Abstract

The application discloses a protective frequency-reducing method of a compressor and a related device, wherein the method comprises the steps of obtaining a first target frequency and a second target frequency when an air conditioner meets a protective frequency-reducing triggering condition, wherein the first target frequency is the frequency to which the compressor needs to be reduced when the air conditioner executes the protective frequency-reducing operation, the second target frequency is the frequency to which the compressor is planned to restore after the air conditioner finishes executing the protective frequency-reducing operation, reducing the second target frequency to obtain the reduced second target frequency, and if the air conditioner runs at the reduced second target frequency, taking the reduced second target frequency as a new first target frequency, and raising the reduced second target frequency to obtain a new second target frequency.

Inventors

SHI HUI
Gai Jiangpeng
YANG WEI

Assignees

青岛海尔空调器有限总公司
海尔智家股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241029

Claims (10)

1. A method of protecting a compressor from frequency degradation, comprising: when an air conditioner meets a protective frequency-reducing triggering condition, a first target frequency and a second target frequency are obtained, wherein the first target frequency is the frequency to which a compressor needs to be reduced when the air conditioner executes the protective frequency-reducing operation; Reducing the second target frequency to obtain a reduced second target frequency; and if the air conditioner runs at the second target frequency after the reduction treatment, taking the second target frequency after the reduction treatment as a new first target frequency, and carrying out rising treatment on the second target frequency after the reduction treatment to obtain the new second target frequency.
2. The method of protecting a compressor from frequency down conversion as set forth in claim 1, wherein reducing the second target frequency to obtain a reduced second target frequency includes: obtaining a current protection coefficient, wherein the current protection coefficient represents a current frequency-reducing amplitude; and reducing the second target frequency based on the current protection coefficient to obtain a reduced second target frequency.
3. The method of protecting down-conversion of a compressor according to claim 2, wherein obtaining a current protection factor comprises: acquiring a primary protection coefficient before the current moment; and accumulating the previous protection coefficients to obtain the current protection coefficient.
4. The method of protecting a compressor from frequency down conversion as defined in claim 2, wherein the step up processing the second target frequency after the step down processing to obtain a new second target frequency includes: reducing the current protection coefficient to obtain a new protection coefficient; And carrying out rising treatment on the second target frequency after the reducing treatment based on the new protection coefficient to obtain a new second target frequency.
5. The method of protecting a compressor from frequency down conversion according to claim 1, wherein the air conditioner satisfies a set condition, comprising: and the air conditioner continuously operates at the second target frequency after the reduction processing within a set time period, and the protective frequency reduction triggering condition is not met again within the set time period.
6. The method of protecting down-conversion of a compressor according to claim 1, the method is characterized in that the method for reducing the frequency of the compressor in a protective way further comprises the following steps: And if the air conditioner meets the protective frequency-reducing triggering condition again in the process of operating at the second target frequency after the reduction treatment, switching from the new first target frequency to the first target frequency, and re-executing the protective frequency-reducing operation.
7. A protective down conversion apparatus for a compressor, comprising: The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first target frequency and a second target frequency when an air conditioner meets a protective frequency-reducing triggering condition, wherein the first target frequency is the frequency to which a compressor needs to be reduced when the air conditioner executes the protective frequency-reducing operation; The first processing module is used for reducing the second target frequency to obtain a reduced second target frequency; And the second processing module is used for taking the second target frequency after the reduction processing as a new first target frequency if the air conditioner runs at the second target frequency after the reduction processing, and carrying out rising processing on the second target frequency after the reduction processing to obtain the new second target frequency.
8. A computer program product comprising computer readable instructions which, when run on an electronic device, cause the electronic device to implement the compressor protection down conversion method of any one of claims 1 to 6.
9. An air conditioner, comprising: a processor for executing the computer program to enable the air conditioner to implement the compressor protective down-conversion method according to any one of claims 1 to 6; And the compressor is used for operating according to the frequency determined by the processor.
10. A computer storage medium carrying one or more computer programs which, when executed by an air conditioner, enable the air conditioner to implement the compressor protection down-conversion method of any one of claims 1 to 6.

Description

Protective frequency-reducing method and related device for compressor Technical Field The application relates to the technical field of air conditioner control, in particular to a protective frequency-reducing method of a compressor and a related device. Background In the everyday operation of an air conditioning system, a protective down-conversion mechanism is a critical safety function aimed at preventing damage to the compressor under extreme or adverse conditions. The mechanism can respond to a series of external environment factors including but not limited to high temperature, high humidity, improper installation position of an air conditioner external unit (such as limited ventilation caused by placing at an included angle of a building or influence of heat dissipation caused by shielding an air outlet at a low floor), and the like, and ensures stable operation of the system by automatically reducing the operation frequency of the compressor, and avoids potential fault risks. However, in practical applications, when the external environmental condition is constant or the improvement is slow, the air conditioning system may trigger the protective frequency-reducing again after attempting to recover the frequency, so as to form a phenomenon of frequent frequency-increasing. Frequent frequency rising and falling can cause unnecessary abrasion to an air conditioning system, shorten the service life of equipment and possibly influence the comfort level and the use experience of a user. Disclosure of Invention In view of the above problems, the present application provides a method and a related device for protecting and reducing frequency of a compressor, so as to achieve the purposes of reducing abrasion to an air conditioning system, prolonging service life of equipment, and improving comfort and use experience of users. The specific scheme is as follows: the first aspect of the application provides a method for protecting down-conversion of a compressor, comprising the following steps: when an air conditioner meets a protective frequency-reducing triggering condition, a first target frequency and a second target frequency are obtained, wherein the first target frequency is the frequency to which a compressor needs to be reduced when the air conditioner executes the protective frequency-reducing operation; Reducing the second target frequency to obtain a reduced second target frequency; and if the air conditioner runs at the second target frequency after the reduction treatment, taking the second target frequency after the reduction treatment as a new first target frequency, and carrying out rising treatment on the second target frequency after the reduction treatment to obtain the new second target frequency. In one possible implementation, the reducing the second target frequency to obtain a reduced second target frequency includes: obtaining a current protection coefficient, wherein the current protection coefficient represents a current frequency-reducing amplitude; and reducing the second target frequency based on the current protection coefficient to obtain a reduced second target frequency. In one possible implementation, obtaining the current protection factor includes: acquiring a primary protection coefficient before the current moment; and accumulating the previous protection coefficients to obtain the current protection coefficient. In one possible implementation, the step of raising the second target frequency after the step of lowering is performed to obtain a new second target frequency, including: reducing the current protection coefficient to obtain a new protection coefficient; And carrying out rising treatment on the second target frequency after the reducing treatment based on the new protection coefficient to obtain a new second target frequency. 5. The method of protecting a compressor from frequency down conversion according to claim 1, wherein the air conditioner satisfies a set condition, comprising: and the air conditioner continuously operates at the second target frequency after the reduction processing within a set time period, and the protective frequency reduction triggering condition is not met again within the set time period. In one possible implementation, the compressor protective down-conversion method further includes: And if the air conditioner meets the protective frequency-reducing triggering condition again in the process of operating at the second target frequency after the reduction treatment, switching from the new first target frequency to the first target frequency, and re-executing the protective frequency-reducing operation. Another aspect of the present application provides a protective down conversion apparatus for a compressor, comprising: The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first target frequency and a second target frequency when an air conditioner