Freezing control method and refrigerator

Abstract

The invention belongs to the technical field of freezing, and particularly relates to a refrigerator freezing control method and a refrigerator, and the control method comprises the following stages: a pre-cooling stage: cooling a storage chamber to a first temperature within a time delta t1 and maintaining the first temperature for a time delta t2; in the supercooling stage, the storage chamber is cooled from the first temperature to the second temperature and maintained, the food temperature is monitored, and when the food temperature reaches the freezing temperature point, the second temperature of the storage chamber continues to be maintained for delta t3 time; in the temperature returning stage, the temperature of the storage chamber is increased, and the temperature of the storage chamber is increased to a third temperature from the second temperature; in the storage stage, the third temperature of the storage chamber is maintained so that the food can be stored under the temperature condition; the first temperature is-5 DEG C to 1 DEG C; the second temperature ranges from-80 DEG C to-30 DEG C; the third temperature is-5 DEG C to 1 DEG C. According to the invention, the food is subjected to sectional freezing treatment, so that the phenomenon that the quality of the food is deteriorated due to rapid deep freezing is avoided, and the food quality problem caused by unfreezing after the food is frozen at an ultralow temperature is also avoided.

Description

technical field [0001] The invention belongs to the technical field of freezing, and in particular relates to a refrigerator freezing control method and a refrigerator. Background technique [0002] With the continuous improvement of living standards and the improvement of diet structure, people have higher and higher requirements for the freshness of frozen food and the durability of frozen food preservation. It is also required that its nutrients can be retained to the maximum extent, especially meat that needs to be frozen. At present, refrigerator meat preservation technology can be divided into freezing and cold storage according to temperature: (1) Freezing preservation refers to storing meat below the freezing point, and more than 80% of the water in the meat is frozen. The advantage of this method is that it can maximize Extend the storage period of meat and prevent microbial infection and fat oxidation. The disadvantage is that ice crystals formed during the freezi...

AI Technical Summary

Problems solved by technology

At present, refrigerator meat preservation technology can be divided into freezing and cold storage according to temperature: (1) Freezing preservation refers to storing meat below the freezing point, and more than 80% of the water in the meat is frozen. The advantage of this method is that it can maximize Extend the storage period of meat and prevent microbial infection and fat oxidation. The disadvantage is that the ice crystals formed during the freezing process of water will pierc

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