Air separation apparatus and refrigerating freezing apparatus

Abstract

The invention provides an air separation apparatus and a refrigerating freezing apparatus. The air separation apparatus comprises: a base frame in which an enriched gas collection cavity is defined and which has at least one base support surface communicated with the enriched gas collection cavity; at least one stacking frame each having a stacking support surface which forms a channel, wherein each stacking frame is releasably stacked to the outer side of the base support frame of the base frame; and a plurality of air separation membranes that are spread to the base support surface and the stacking support surfaces respectively, wherein each air separation membrane is configured such that more specific gas in air flow in the peripheral space of the air separation apparatus permeates the air separation membranes into the enriched gas collection cavity than other gases therein. By assembling the base frame and the stacking frames, more layers of air separation membranes are permeated by the outside air before entering the enriched gas collection cavity, and the purity of separated air is enhanced.

Description

technical field [0001] The invention relates to the technical field of gas separation, in particular to an air separation device and a refrigerating and freezing device having the same. Background technique [0002] A refrigerator is a refrigeration device that maintains a constant low temperature, and it is also a civilian product that keeps food or other items in a constant low temperature and cold state. 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 food remain unchanged as much as possible during the storage period. [0003] In the fresh-keeping technology of the refrigerator, oxygen is closely related to the oxidation and respiration of the food in the refrigerator. The slower the respiration of the food, the lower the oxidation of the food and the longer ...

AI Technical Summary

Problems solved by technology

But until now, due to the large size and high cost of nitrogen-generating equipment traditionally used for controlled atmosphere preservation, this technology has basically been limited to use in various large-scale professional storages (storage capacity is generally at least 30 tons or more).

It can be said that what kind of appropriate gas adjustment tec

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