A method and device for controlling the frequency of a compressor in an air conditioner

Abstract

The invention provides a method and a device for controlling frequency of a compressor in an air conditioner. The method comprises the following steps: S0, receiving an externally input target outletwater temperature; S1, detecting current outlet water temperature and current frequency of the compressor in a target air conditioner at current moment and determining historical outlet water temperature of the compressor before setting time intervals; S2, calculating absolute temperature difference between the target outlet water temperature and the current outlet water temperature and calculating trend temperature difference between the current outlet water temperature and the historical outlet water temperature; S3, determining change frequency according to the absolute temperature difference and the trend temperature difference, and determining target frequency according to the change frequency and the current frequency; and S4, controlling the compressor to operate according to the target frequency and performing the step S1 after setting the time intervals. Through the technical scheme, the influence of excessively great change of the environment temperature in extremely short time on the user experience can be avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for controlling the frequency of a compressor in an air conditioner. Background technique [0002] With the development of science and technology and the improvement of living standards, frequency conversion air conditioners as refrigeration / heating equipment have been widely used. The frequency of the compressor in the air conditioner can be controlled according to the target water temperature input from the outside to adjust the ambient temperature. [0003] At present, when controlling the frequency of a compressor in an air conditioner, it is usually necessary to detect the outlet water temperature of the compressor at the current moment, and control the frequency of the compressor according to the difference between an externally input target temperature and the outlet water temperature. [0004] When the frequency of the compressor is controlled...

AI Technical Summary

Problems solved by technology

[0004] When the frequency of the compressor is controlled by the above method, only the temperature difference between the target temperature of the external input and the outlet water temperature of the compressor at the current moment is considered, so that the frequency of the compressor may have a large amplitude in a very short time , resulting in excessive changes in the ambient temperature in a very short period of time and affecting user experience

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