Refrigerator defrosting control method and control system and refrigerator

Abstract

The invention relates to a refrigerator defrosting control method and system. The method comprises the steps that a refrigerator is controlled to run; whether a defrosting starting condition is met or not is judged, the refrigerator is kept running at the original state if the defrosting starting condition is not met, and whether a compressor runs or not is judged if the defrosting starting condition is met; if the compressor runs, refrigeration temperature is obtained in real time, whether the refrigeration temperature is smaller than or equal to Tft-a DEG C or not is judged, Tft is a refrigeration shutdown point, and a is a constant; if the refrigeration temperature is smaller than or equal to Tft-a DEG C, a fan is controlled to stop running, a defrosting heater is started, and the refrigerator enters in a defrosting mode; if the compressor does not run, the fan is directly controlled to stop running, the defrosting heater is started, and the refrigerator enters in the defrosting mode; whether a defrosting finishing condition is met or not continues to be judged, the defrosting mode is kept if the defrosting finishing condition is not met, and the defrosting mode quits if the defrosting finishing condition is met. The influence of rise of the refrigeration temperature on the refrigeration effect in the defrosting process is effectively reduced, it is guaranteed that food in a freezing chamber is below target temperature, and refrigeration quality is guaranteed.

Description

technical field

[0001] The invention relates to the technical field of refrigerators, in particular to a refrigerator defrosting control method, a control system and a refrigerator. Background technique

[0002] Frosting will occur during the refrigeration process of the refrigerator. If the frosting is not dealt with for a long time, it will affect the operation of the refrigerator. Therefore, it is necessary to defrost the refrigerator as needed.

[0003] At present, when the frost-free refrigerator needs to defrost, after the freezing temperature reaches the stop point, the compressor and fan are directly controlled to stop working, and the defrosting heater is directly turned on. During the defrosting process of the heater, the temperature inside the refrigerator will rise. When freezing at the standard temperature, it will affect the freezing of food, and the freezing effect cannot be guaranteed. Contents of the invention

[0004] The technical problem to be solved ...

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