热耦合同轴型双级高频脉管制冷机实验研究  

Experimental Study of a Thermally-Coupled Two-Stage Coaxial Type High Frequency Pulse Tube Cryocooler

作　　者：蒋燕阳 蒋珍华[1] 朱海峰[1,2] 刘少帅[1] 吴亦农[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院大学,北京100049

出　　处：《红外》2017年第7期37-41,共5页Infrared

摘　　要：空间探测技术对小型低温制冷机提出了在不同温区同时供冷的要求,而双级高频脉管制冷机则是一种极具潜力的解决方案。介绍了一种热耦合双级高频脉管制冷机,其两级冷指均采用同轴型结构以提升制冷机结构的紧凑性。在室温惯性管调相的方式下,获得了22.03 K的最低无负载温度;当总的输入电功为413 W时,两级可同时获得8 W@80 K和1 W@30 K的制冷量。针对不同预冷温度下的性能特性开展了实验研究,得到了低温级冷指效率的变化规律。Space exploration missions require cryocoolers to provide cooling power in different temperature regions. The two-stage high frequency pulse tube cryocooler is a potential solution. A thermally coupled two-stage high frequency pulse tube cryocooler is presented. To improve the compactness, its two cold fingers are both shaped in coaxial type. The no-load temperature of 22.03 K is achieved in the phase shifting with only a room temperature inertance tube. For a total input electric power of 413 W, both 8 W@80 K and 1 W@30 K can be obtained at two stages. Experimental study is carried out for its cooling performance at different precooling temperatures. The changing rule of the efficiency of cold fingers at low temperature stages is obtained.

关 键 词：热耦合 双级脉管 预冷温度 

分 类 号：TB651[一般工业技术—制冷工程]