Ultra-low temperature refrigerator jointly used by CO2 auxiliary refrigeration equipment and binary cascade refrigeration system

Abstract

The invention provides an ultra-low temperature refrigerator jointly used by CO2 auxiliary refrigeration equipment and a binary cascade refrigeration system. The ultra-low temperature refrigerator comprises an ultra-low temperature refrigerator body and the CO2 auxiliary refrigeration equipment, wherein the binary cascade refrigeration system used for refrigerating the interior of the refrigeratoris arranged in the ultra-low temperature refrigerator body; and an output end of the CO2 auxiliary refrigeration equipment extends into the interior of the ultra-low temperature refrigerator body, and is used for spraying a preset amount of CO2 gas into the interior of the refrigerator body after receiving a CO2 auxiliary refrigeration signal that a refrigerator door is in a closed state and theinterior temperature of the refrigerator body is higher than a preset value. According to the ultra-low temperature refrigerator jointly used by the CO2 auxiliary refrigeration equipment and the binary cascade refrigeration system, the CO2 auxiliary refrigeration equipment is adopted, so that the quick cooling of the ultra-low temperature refrigerator in the initial use is realized, and the problem of low temperature returning speed of the ultra-low temperature refrigerator caused by the opening of the refrigerator door or the large-capacity storage is obviously improved; and meanwhile, by adopting the CO2 auxiliary refrigeration equipment, the interior temperature can be kept in a low-temperature state within a certain period of time after power failure, and the safety of samples in the refrigerator is guaranteed.

Description

technical field [0001] The invention relates to the technical field of ultra-low temperature refrigerators, in particular to an ultra-low temperature refrigerator jointly used by CO2 auxiliary refrigeration equipment and a binary cascade refrigeration system. Background technique [0002] Ultra-low temperature refrigerators are mainly used in the fields of national defense, medical treatment and scientific research. With the increasing rise of life sciences and bio-genetic engineering, the demand for ultra-low temperature refrigerators is increasing year by year. Ultra-low temperature refrigerators in the fields of life sciences and biogenetic engineering can store sperm, eggs, ES cells, etc. Ordinary ultra-low temperature refrigerators take a long time from the ambient temperature to the ultra-low temperature environment in the cabinet, and when the refrigerator door is opened or closed or the load inside the cabinet is heavy, it takes a long time for the temperature in th...

AI Technical Summary

Problems solved by technology

It takes a long time for ordinary ultra-low temperature refrigerators to go from the ambient temperature to the ultra-low temperature environment in the cabinet, and when the refrigerator door is opened or closed or the load in the cabinet is heavy, it takes a long time for the temperature in the cabinet to return to the ultra-low temperature environment

At the same time, when the power of ordinary ultra-low temperature refrigerators is cut off, the temperature inside the cabinet rises rapidly, which cannot guarantee the safety of refrigerator samples, and may easily cause damage to biological samples inside.

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