Refrigerating and freezing device and preservation control method thereof

Abstract

The invention provides a refrigerating and freezing device and a preservation control method thereof. The refrigerating and freezing device comprises a box, an air conditioning film component and a sucking pump, wherein a storage space is limited in the box; an airtight preservation sub-space is arranged in the storage space, and the sucking pump is arranged for enabling air in the preservation sub-space in the storage space to permeate through the air conditioning film component so as to form an atmosphere beneficial to food preservation in the preservation sub-space in the storage space. The preservation control method comprises the following steps: detecting the variety of food placed in the preservation sub-space; confirming a corresponding preservation running mode according to the variety of the food; setting the preservation running modes corresponding to various foods in the refrigerating and freezing device in advance, setting a starting / stopping period of the sucking pump in advance for each preservation running mode, and guaranteeing that the atmosphere in the preservation sub-space meets the refrigeration condition of the food placed in the preservation sub-space by the starting / stopping period; and driving the sucking pump to run according to the confirmed starting / stopping period. The preservation control method can meet the requirement for refrigeration of different foods.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to a refrigeration and freezing device and a fresh-keeping control method thereof. Background technique [0002] Food is the source of energy for people's survival and is very important to people. For food storage, the two main aspects are heat preservation and freshness preservation. Generally speaking, temperature has a significant impact on the microbial activity on food and the action of enzymes in food. The decrease in temperature will delay the deterioration of food, and the refrigerator is to keep it constant. A low-temperature refrigeration device is also a civilian product that keeps food or other items in a constant low temperature and cold state. [0003] With the improvement of the quality of life, consumers have higher and higher requirements for the preservation of stored food, especially for the color and taste of food. Therefore, the stored food should also ensure ...

AI Technical Summary

Problems solved by technology

The vacuum storage room is used to keep fresh. Since the box body is a rigid structure, it must be kept in a vacuum state. The requirements for the vacuum system and the sealing performance of the refrigerator are very high. There is a lot of air, which consumes a lot of energy for the refrigerator

[0006] On the other hand, in the vacuum environment in the refrigerator, it is difficult for the food to receive the cold, which is not conducive to the cooling of the food.

In addition, due to the vacuum environment, the user needs to spend a lot of effort to open the refrigerator door every time, which causes inconvenience to the user.

Although some refrigerators can ventilate the vacuum storage room through the vacuum system, this will cause the user to wait for a long time, and the timeliness is poor

A longer vacuum time will also cause serious deformation of the refrigerator box, that is, the existing refrigerators with a vacuum pumping structure cannot complete vacuum preservation well, and the strength of the box is required to be very high. The realization requirements are high and the cost is high.

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