Direct-cooling refrigerator defrosting function control method

Abstract

The invention discloses a direct-cooling refrigerator defrosting function control method. The direct-cooling refrigerator defrosting function control method mainly comprises the following steps that (1), the compressor starting time t<1> and the refrigerator door opening time t<2> are detected and calculated, the defrosting judgment time t is obtained after the compressor starting time t<1> and the refrigerator door opening time t<2> are accumulatively added according to the weight, and when the t value is larger than or equal to a threshold value A, it is judged that a refrigerator meets thedefrosting starting condition, and the defrosting process is conduced; and (2), the refrigerator is in the defrosting state, at the same time, a compressor is forced to be stopped, when the continuousdefrosting time t' reaches a threshold value B, the defrosting process is finished, refrigerator waits for the next defrosting period, t, t<1> and t<2> are rest, and calculation is conducted again. According to the method, a low-cost defrosting scheme is proposed, and the defrosting function is achieved only by optimizing an electronic refrigerator essential part control mode.

Description

technical field [0001] The invention belongs to the technical field of home appliance preparation, and in particular relates to a method for controlling the defrosting function of a direct-cooling refrigerator. Background technique [0002] At present, electronic direct cooling refrigerators mostly adopt the single temperature control of the refrigerating room, that is, the compressor is controlled by the temperature of the refrigerating room. When the ambient temperature of the refrigerator is high, it is relatively difficult to cool down the refrigerator compartment, resulting in an increase in the on-off ratio of the compressor. The evaporator operates at low temperature for a long time, and it is easy to frost after absorbing the moisture in the box. At the same time, the frost layer will reduce the evaporation efficiency, affect the heat transfer, and make it difficult to drop the temperature in the box, thus further increasing the start-stop ratio of the compressor. ...

AI Technical Summary

Problems solved by technology

Direct cooling refrigerators are low-end products with strict cost control. The increase of the above-mentioned accessories will undoubtedly affect product competitiveness

In addition, during the defrosting process, the refrigerator stops cooling, and the heating wire or hot gas bypass branch works, which will directly increase the temperature inside the box, which is very likely to cause food spoilage

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