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4K温区斯特林型脉管制冷机各级回热器的级联温度不仅决定最末级回热器的效率和性能,同时影响前几级回热器为最末级回热器提供的预冷量。本文基于一台采用两级G-M型脉管制冷机预冷的单级斯特林型脉管制冷机,开展了4 K温区斯特林型脉管制冷机回热器各级温位布置方式对4 K斯特林型脉管制冷机制冷性能以及第一级和第二级预冷量影响的理论及实验研究,为液氦温区完全斯特林型脉管制冷机的设计提供了重要的参考依据.
4K temperature zone Stirling pulse tube refrigerator cascade at all levels of the cascade temperature not only determines the efficiency and performance of the last stage regenerator, while affecting the first few stages of regenerator for the last stage regenerator provided Pre-cooling capacity. Based on a single-stage Stirling-type pulse tube chiller with two-stage GM-type pulse tube chiller precooling, a four-temperature K-type Stirling-based pulse tube chiller The theoretical and experimental studies on the refrigeration performance of 4 K Stirling-type pulse tube chillers and the effects of the first-stage and second-stage pre-cooling have provided important information for the design of complete Stirling-type pulse tube chillers in liquid helium The reference basis.