CN-121993889-A - Compressor operation frequency control method and device for air conditioner

CN121993889ACN 121993889 ACN121993889 ACN 121993889ACN-121993889-A

Abstract

The invention discloses a method and a device for controlling the operating frequency of a compressor of an air conditioner. The method comprises the steps of obtaining a first temperature difference value between the indoor environment temperature of a target room where the air conditioner is located and a set temperature when the air conditioner is determined to operate in a refrigerating mode, triggering a compressor of the air conditioner to operate in an ultralow frequency operation mode when the first temperature difference value is determined to be smaller than or equal to a first temperature difference threshold value, continuously obtaining the first temperature difference value, determining the operation mode of the compressor according to the magnitude relation between the first temperature difference value and the first temperature difference threshold value and the magnitude relation between the first temperature difference value are determined to be larger than a second temperature difference threshold value, and controlling the compressor to operate according to the operation mode so that the drying speed of an indoor heat exchanger of the air conditioner reaches a preset drying speed. The invention solves the technical problem that the variable frequency control of the air conditioner in the related art can not realize the quick drying of the evaporator in the normal refrigeration mode.

Inventors

Li Muhu
FANG XIANGJIAN
LIN JINHUANG
HE ZHENJIAN
WANG XIAOQIAN
LIANG YULIN

Assignees

珠海格力电器股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241104

Claims (14)

1. A compressor operating frequency control method of an air conditioner, comprising: when the air conditioner is determined to operate in a refrigeration mode, acquiring a first temperature difference value between the indoor environment temperature and the set temperature of a target room where the air conditioner is positioned; When the first temperature difference value is smaller than or equal to a first temperature difference threshold value, triggering a compressor of the air conditioner to operate in an ultralow frequency operation mode, and continuously acquiring the first temperature difference value, wherein the ultralow frequency operation mode is a mode that the operation frequency of the compressor is lower than a first frequency threshold value; Determining an operation mode of the compressor according to the magnitude relation between the first temperature difference value and the first temperature difference threshold value and the second temperature difference threshold value respectively, wherein the first temperature difference threshold value is larger than the second temperature difference threshold value; and controlling the compressor to operate according to the operation mode so as to enable the drying speed of the indoor heat exchanger of the air conditioner to reach a preset drying speed.
2. The method of controlling an operating frequency of a compressor of an air conditioner according to claim 1, wherein triggering the compressor of the air conditioner to operate in an ultralow frequency operation mode comprises: After determining that the compressor enters the ultralow frequency operation mode, acquiring the current operation frequency of the compressor and the outdoor environment temperature of the target room; When the current operating frequency is determined to be corrected according to the magnitude relation between the outdoor environment temperature and a first outdoor temperature threshold value and a second outdoor temperature threshold value, respectively, a first correction value of the current operating frequency is determined, wherein the first outdoor temperature threshold value is smaller than the second outdoor temperature threshold value; Correcting the current operating frequency according to the first correction value to obtain a first correction frequency; And determining the operation frequency of the compressor and the rotating speed of an inner fan of the air conditioner according to the magnitude relation between the first correction frequency and the preset frequency.
3. The method of controlling an operating frequency of a compressor of an air conditioner according to claim 2, wherein determining that the current operating frequency needs to be corrected according to magnitude relation of the outdoor environment temperature with a first outdoor temperature threshold and a second outdoor temperature threshold, respectively, comprises: and when the outdoor environment temperature is smaller than the first outdoor temperature threshold value or the outdoor environment temperature is larger than or equal to the first outdoor temperature threshold value and smaller than the second outdoor temperature threshold value, determining that the current operating frequency needs to be corrected, wherein the first correction frequency corresponding to the case that the outdoor environment temperature is smaller than the first outdoor temperature threshold value is larger than the first correction frequency corresponding to the case that the outdoor environment temperature is larger than or equal to the first outdoor temperature threshold value and smaller than the second outdoor temperature threshold value.
4. The method of controlling an operating frequency of a compressor of an air conditioner according to claim 2, wherein correcting the current operating frequency according to the correction value to obtain a first corrected frequency comprises: And determining the frequency difference between the current operating frequency and the first correction value as the first correction frequency.
5. The method of controlling an operating frequency of a compressor of an air conditioner according to claim 2, wherein determining the operating frequency of the compressor and an inner fan speed of an inner fan of the air conditioner according to a magnitude relation between the first correction frequency and a preset frequency, comprises: When the first correction frequency is smaller than the preset frequency, determining the running frequency as the preset frequency and reducing the rotating speed of the inner fan; And when the first correction frequency is greater than or equal to the preset frequency, determining the operating frequency as the first correction frequency and reducing the rotating speed of the inner fan.
6. The method of controlling an operating frequency of a compressor of an air conditioner according to claim 2, wherein determining an operating mode of the compressor according to a magnitude relation between the first temperature difference value and the first and second temperature difference thresholds, respectively, comprises: When the first temperature difference value is smaller than the second temperature difference threshold value, determining the operation mode to be the ultralow frequency operation mode, and entering a high frequency operation mode, wherein the high frequency operation mode is a mode that the operation frequency of the compressor is higher than a second frequency threshold value; When the first temperature difference value is determined to be greater than or equal to the second temperature difference threshold value and less than the first temperature difference threshold value, determining the operation mode to be the ultralow frequency operation mode; and when the first temperature difference value is determined to be greater than or equal to the first temperature difference threshold value, determining the operation mode according to the magnitude relation between the first correction frequency and the frequency threshold value.
7. The method of controlling an operating frequency of a compressor of an air conditioner according to claim 6, wherein determining the operating mode according to a magnitude relation between the first correction frequency and the frequency threshold when it is determined that the first temperature difference is greater than or equal to the first temperature difference threshold, comprises: when the first correction frequency is larger than the frequency threshold value, determining the operation mode to be the ultralow frequency operation mode; When the first correction frequency is smaller than or equal to the frequency threshold, the first correction frequency is controlled to be increased by a preset frequency every preset period, and the operation frequency of the compressor is circularly corrected according to the change of the first temperature difference value, so that the indoor environment temperature is in a preset temperature range.
8. The method of controlling an operation frequency of a compressor of an air conditioner according to claim 6 or 7, wherein controlling the compressor to operate according to the operation mode when the operation mode is the high frequency operation mode comprises: Acquiring the first correction frequency of the compressor and an outdoor ambient temperature of the target room; When the first correction frequency is determined to be required to be corrected according to the outdoor environment temperature, a second correction value of the first correction frequency is determined; Correcting the first correction frequency by using the second correction value to obtain a second correction frequency; And controlling the compressor to run according to the second correction frequency, and controlling the rotating speed of the inner fan of the air conditioner to be unchanged.
9. The method of controlling an operating frequency of a compressor of an air conditioner as set forth in claim 8, further comprising: counting accumulated operation time of the compressor in the high-frequency operation mode; And controlling the compressor to stop when the accumulated operation time length is determined to reach the preset accumulated operation time length.
10. A compressor operating frequency control device of an air conditioner, comprising: the acquisition module is used for acquiring a first temperature difference value between the indoor environment temperature and the set temperature of a target room where the air conditioner is located when the air conditioner is determined to operate in a refrigeration mode; The triggering module is used for triggering the compressor of the air conditioner to operate in an ultralow frequency operation mode and continuously acquiring the first temperature difference value when the first temperature difference value is smaller than or equal to a first temperature difference threshold value, wherein the ultralow frequency operation mode is a mode that the operation frequency of the compressor is lower than a first frequency threshold value; The determining module is used for determining the operation mode of the compressor according to the magnitude relation between the first temperature difference value and the first temperature difference threshold value and the second temperature difference threshold value, wherein the first temperature difference threshold value is larger than the second temperature difference threshold value; and the control module is used for controlling the compressor to operate according to the operation mode so as to enable the drying speed of the indoor heat exchanger of the air conditioner to reach a preset drying speed.
11. An air conditioner characterized in that the air conditioner uses the compressor operation frequency control method of the air conditioner as claimed in any one of the above claims 1 to 9.
12. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein the program executes the compressor operating frequency control method of the air conditioner of any one of claims 1 to 9.
13. A processor for running a program, wherein the program runs to execute the compressor operation frequency control method of the air conditioner according to any one of claims 1 to 9.
14. A computer program product comprising computer instructions which, when executed by a processor, perform the method of controlling the operating frequency of a compressor of an air conditioner according to any one of claims 1 to 9.

Description

Compressor operation frequency control method and device for air conditioner Technical Field The invention relates to the technical field of household appliance control, in particular to a method and a device for controlling the running frequency of a compressor of an air conditioner. Background In the refrigerating operation process of the air conditioner, the evaporator of the indoor unit is lower than the dew point temperature of indoor air at low temperature, namely, condensed water is generated on the heat exchanger. In the indoor air circulation process, organic pollutants such as ash layers and the like can be adsorbed and desorbed by an air conditioner evaporator, and the humidity, the normal temperature and the organic matters in the ash layers can lead to the fact that the internal environment of the air conditioner becomes complex, the air quality of a room is difficult to control, and the use experience of a user is poor. The prior art can not enable the air conditioner to generate no condensed water in the refrigerating process, part of the technology can remove the condensed water by adopting the hydrophobic fins, but the condensed water can form a water bridge between the fins, so that the problems of heat exchange capacity reduction, water blowing at an air outlet and the like are solved, and the other part of the technology can avoid generating the condensed water by controlling the temperature of the inner pipe to be always higher than the dew point temperature, but the dew point temperature of different working conditions is difficult to directly predict, the full working conditions can not be considered under control, simultaneously the cold output of the air conditioner is greatly reduced, the refrigerating effect is extremely poor when the room load is large, and the comfort requirement of a user can not be met. In view of the above problems, no effective solution has been proposed at present. Disclosure of Invention The embodiment of the invention provides a method and a device for controlling the operation frequency of a compressor of an air conditioner, which at least solve the technical problem that the variable frequency control of the air conditioner in the related art cannot realize the rapid drying of an evaporator in a normal refrigeration mode. According to one aspect of the embodiment of the invention, a control method for the operating frequency of a compressor of an air conditioner is provided, and the control method comprises the steps of obtaining a first temperature difference value between the indoor environment temperature of a target room where the air conditioner is located and a set temperature when the air conditioner is determined to operate in a refrigerating mode, triggering the compressor of the air conditioner to operate in an ultralow frequency operating mode when the first temperature difference value is determined to be smaller than or equal to a first temperature difference threshold value, and continuously obtaining the first temperature difference value, wherein the ultralow frequency operating mode is a mode that the operating frequency of the compressor is lower than a first frequency threshold value, determining the operating mode of the compressor according to the magnitude relation between the first temperature difference value and the first temperature difference threshold value and a second temperature difference threshold value, and controlling the compressor to operate according to the operating mode so that the drying speed of an indoor heat exchanger of the air conditioner reaches a preset drying speed. The method comprises the steps of acquiring current operating frequency of a compressor and outdoor environment temperature of a target room after the compressor is determined to enter the ultralow frequency operating mode, determining a first correction value of the current operating frequency when the current operating frequency is determined to be required to be corrected according to the magnitude relation between the outdoor environment temperature and a first outdoor temperature threshold and a second outdoor temperature threshold respectively, wherein the first outdoor temperature threshold is smaller than the second outdoor temperature threshold, correcting the current operating frequency according to the first correction value to obtain a first correction frequency, and determining the operating frequency of the compressor and the inner fan rotating speed of an inner fan of the air conditioner according to the magnitude relation between the first correction frequency and a preset frequency. Optionally, determining that the current operating frequency needs to be corrected according to the magnitude relation between the outdoor environment temperature and a first outdoor temperature threshold and a second outdoor temperature threshold respectively includes determining that the current operating frequency needs to be corrected when the