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介绍了一套大容量低温制冷装置的设计情况。该装置中的低温箱体的工作净容积为1.375m3(1.5m×1.5m×1.1m),由两个单级压缩制冷系统组成的复叠制冷系统构成,其中高温制冷系统采用R22作为制冷剂,低温制冷系统采用R23作为制冷剂。高温制冷系统单独运行时可制取-35℃的低温,当与低温制冷系统复叠运行时,低温制冷系统可制取-70℃的低温。该装置可以应用于食品行业、医疗临床、军事工程以及航天等很多领域。
The design of a large capacity cryogenic refrigeration unit is introduced. The working chamber of the cryogenic tank has a net working volume of 1.375m 3 (1.5m × 1.5m × 1.1m) and consists of a cascade refrigeration system consisting of two single-stage compression refrigeration systems, of which R22 is used as the refrigerant in the high-temperature refrigeration system , Low temperature refrigeration system uses R23 as a refrigerant. High-temperature refrigeration system can be obtained when operating alone -35 ℃ low temperature, when cascaded with low-temperature refrigeration system operation, the low-temperature refrigeration system can produce -70 ℃ low temperature. The device can be applied to the food industry, medical clinical, military engineering and aerospace and many other fields.