Refrigeration and defrosting temperature control system, method, controller and medium for inverter refrigerator

Abstract

The invention belongs to the technical field of frequency conversion refrigerator control, and discloses a frequency conversion refrigerator refrigeration defrosting temperature control system, method, controller and medium. Specifically, a temperature fuzzy control strategy table is designed according to the performance parameter characteristics of the frequency conversion refrigerator, and the fuzzy control The strategy table is configured in the frequency conversion refrigerator refrigeration defrost temperature control system; set the temperature detection accuracy of the frequency conversion refrigerator refrigeration defrost temperature control system, if the temperature sensor detection accuracy of the frequency conversion refrigerator refrigeration defrost temperature control system is lower than the applied fuzzy control strategy If the temperature detection accuracy is higher, the least squares method is used to improve the temperature detection accuracy of the refrigeration and defrosting temperature control system of the inverter refrigerator. Under the condition that the refrigeration compressor is not stopped, the defrosting circuit starts for a period of time to accurately increase the temperature of the evaporator to avoid frosting of the evaporator, thereby reducing the frequency of starting and stopping the refrigeration compressor, and reducing the heating and defrosting time at the same time. The energy loss of the refrigerator and the loss of the compressor are reduced.

Description

technical field [0001] The invention belongs to the technical field of frequency conversion refrigerator control, and in particular relates to a frequency conversion refrigerator refrigeration and defrosting temperature control system, method, controller and medium. Background technique [0002] At present, frequency conversion refrigerators use frequency conversion refrigeration compressors for refrigeration. A frequency conversion refrigeration compressor is a compressor that uses a speed-adjustable motor, which can adjust the speed of the compressor according to the cooling demand, thereby adjusting the cooling capacity. Compared with fixed frequency refrigerators, inverter refrigerators have less temperature fluctuation, high refrigeration efficiency, and less energy consumption during operation, and the energy saving effect is very obvious. Under normal circumstances, the control mechanism for the refrigeration and defrosting of inverter refrigerators is as follows: the...

AI Technical Summary

Problems solved by technology

[0005] (1) The frequency conversion refrigerator control system needs to frequently start and stop the operation of the refrigeration compressor during the refrigeration process and defrosting process, resulting in energy loss and compressor loss;

[0006] (2) The defrosting time of the frequency conversion refrigerator and the recooling time after defrosting are too long, which causes the temperature of the refrigerator compartment to rise sharply and cannot be lowered in time;

[0007] (3) The temperature control of the inverter refrigerator is not accurate enough during the cooling and defrosting process

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