The principle of Haier's modified atmosphere refrigerator CN115111841A
It has an oxygen-rich membrane module 31 and an air pump 40, wherein the space around the oxygen-rich membrane module 31 is communicated with the fresh-keeping space, the oxygen-rich membrane module 31 has at least one oxygen-rich membrane and an oxygen-rich membrane collection chamber, and is configured to make the oxygen in the space flow around the oxygen-rich membrane module 31 enter the oxygen-rich gas collection chamber more than the nitrogen therein, the air pump 40 can pump the gas that penetrates into the oxygen-rich gas collection chamber to the outside of the storage container, so that the gas atmosphere that is rich in nitrogen and oxygen-poor and is conducive to the preservation of food materials is realized in the fresh-keeping space, and the refrigeration system of the refrigeration and freezing equipment is configured to provide cold capacity to the storage spaceIn order to keep the temperature in the fresh-keeping space in the range of 0 °C to 10 °C, this temperature range combined with the nitrogen-rich and oxygen-rich gas atmosphere can inhibit the respiration rate of the ingredients in the fresh-keeping space and effectively extend the shelf life of the ingredients.
In order to promote the flow of gas in the fresh-keeping space and the accommodating chamber 121, the refrigeration and freezing equipment 100 may also include a fan 60 and be arranged in the accommodating cavity 121 to promote the gas of the fresh-keeping space to return to the fresh-keeping space through at least one first ventilation hole 122, the accommodating cavity 121 and at least one second ventilation hole 123 in turn.
The air outlet of the centrifugal fan can be oriented towards the oxygen-rich membrane module 31.
