Control method for instant freezing storage of refrigerator and refrigerator

Abstract

The invention discloses a control method for instant freezing storage of a refrigerator. In response to a received instant freezing storage instruction, cold air generated by a refrigerating system isadjusted to cool a stored object. The storage of the stored object by adopting a supercooling storage mode comprises a supercooling preparation period, a supercooling temperature reduction period, asupercooling release period and a conventional refrigeration period, and is characterized in that the rotating speed of a compressor in the refrigerating system is firstly increased in the supercooling preparation period, the stored object is stored at a preset preparation temperature, and the stored object enters the supercooling temperature reduction period when the temperature of the stored object reaches the preset preparation temperature; the rotating speed of the compressor is recovered in the supercooling temperature reduction period, and the stored object is subjected to a multi-stagetemperature reduction process at a preset temperature gradient; the refrigerant flow of capillary tubes in the refrigerating system is reduced and the rotating speed of the compressor and the rotatingspeed of a condenser fan in the refrigerating system are improved within a preset release time in the supercooling release period so as to release the supercooling; and the refrigerant flow of the capillary tubes, the rotating speed of the compressor and the rotating speed of the condenser fan are recovered in the conventional refrigeration period, and the stored object is stored in a conventional storage mode.

Description

technical field [0001] The invention relates to the field of refrigerators, in particular to a control method for instant freezing storage of refrigerators and a refrigerator. Background technique [0002] In order to better maintain the nutrition of frozen food, ordinary freezing, rapid freezing and other freezing methods are usually used for food preservation. However, traditional ordinary freezing has disadvantages such as uneven temperature control in the freezing chamber and staying in the maximum ice crystal formation zone for a long time. ; And although rapid freezing can pass through the maximum ice crystal formation zone fast, the production cost is higher, which is unfavorable for popularization and application on the refrigerator. There are also some technologies that propose supercooling storage methods, such as the way to release supercooling in CN20070052223.0 "Refrigerator and Freezing Storage Method" by increasing the wind speed or air volume. [0003] There...

AI Technical Summary

Problems solved by technology

[0004] (1) The uneven temperature drop in the supercooling process causes the supercooling to be released in advance;

[0005] (2) Only by increasing the wind speed or air volume, the effect of supercooling is not good;

[0006] (3) The depth of supercooling is shallow, and it cannot enter the supercooling state well

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