Freezer

Abstract

The invention provides a cold preservation and refrigerating device comprising a case body, a first airtight assembly, an oxygen enrichment membrane assembly and an air pump. Storing space is limited in the case body. The first airtight assembly is arranged in the storing space, and freshness maintaining subspace is limited in the first airtight assembly. The oxygen enrichment membrane assembly is arranged in the first airtight assembly, an oxygen enrichment membrane is arranged in the oxygen enrichment membrane assembly, the around space of the oxygen enrichment membrane assembly communicates with the freshness maintaining subspace, and an oxygen enrichment gas collecting cavity is formed in the oxygen enrichment membrane assembly. The air inlet end of the air pump communicates to the oxygen enrichment gas collecting cavity passing through an air pumping pipeline and pumps out the gas in the oxygen enrichment gas collecting cavity, so that the oxygen concentration of the freshness maintaining subspace is reduced, and food freshness maintaining is facilitated. A second airtight assembly is further arranged in the storing space, keep-alive subspace is limited in the second airtight assembly, and the keep-alive subspace communicates to the air outlet end of the air pump passing through an air exhausting pipeline to collect the gas from the oxygen enrichment gas collecting cavity, so that a gas atmosphere with the oxygen concentration being larger than 70% and facilitating fresh food to keep alive is formed in the keep-alive subspace.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to a refrigeration and freezing device. 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 that the color, taste, and freshness of the...

AI Technical Summary

Problems solved by technology

However, fresh aquatic products (such as live fish, live shrimp, live crab, etc.) cannot be stored alive in the prior art, and need to be cooked as soon as possible, which brings great inconvenience to users and affects consumers' enjoyment of fresh aquatic products.

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