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研究了一台具有独立气体回路的液氦温区G -M型二级脉管制冷机的制冷性能。目前的实验装置由两套独立的单级双向进气型脉管系统构成 ,第一级冷头对第二级进气的预冷通过安装在第二级回热器中部的换热器与一级冷头之间的热联接来实现。研究表明 ,该制冷机采用4 He为工质 ,分别以LeyboldCP4 0 0 0和RW 2氦压缩机来驱动第一级和第二级 ,可以获得 2 18K的最低无负荷制冷温度 ,4 2K提供的最大制冷量为 5 95mW。
The cooling performance of a G-M two-stage pulse tube refrigerator with a liquid helium zone with independent gas circuit was studied. The current experimental setup consists of two independent, single-stage, two-way inlet vasculature systems. The first stage cold head precooling the second stage intake air is connected to a heat exchanger mounted in the middle of the second stage regenerator, Cold joint between the cold head to achieve. Studies have shown that the refrigerator using 4He as working fluid, respectively, with LeyboldCP40o and RW2 helium compressors to drive the first and second stage, you can get a minimum temperature of 2 18K unloaded refrigeration temperature, 4 2K provided The maximum cooling capacity of 5 95mW.