100—140 Hz脉冲管制冷机耦合特性的实验研究  

Experimental research on coupling characteristics of100-140 Hz pulse tube cryocooler

作　　者：邢恩春 唐清君 陈厚磊[1] 荀玉强[1] 蔡京辉[1,2] Xing Enchun;Tang Qingjun;Chen Houlei;Xun Yuqiang;Cai Jinghui(Key Laboratory of Technology on Space Energy Conversion,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of the Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院理化技术研究所中国科学院空间功热转换技术重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《低温工程》2022年第2期48-53,共6页Cryogenics

基　　金：国家自然科学基金(521006036);航空科学基金资助项目(20182446001)。

摘　　要：为研究惯性管长度变化对压缩机输出效率和压缩机与冷指之间的耦合特性的影响,对100—140 Hz的2 kg级的高频脉冲管制冷机的整机效率进行了理论分析,通过实验研究了不同惯性管长度对压缩机活塞位移、相位、压力波的影响,并得出了压缩机输出PV功。实验结果表明不同惯性管长度组合,对应不同频率压缩机的效率最高;制冷机整机效率最优与压缩机效率最优的运行参数不尽相同;通过调节惯性管的长度,使压缩机谐振频率与冷指相匹配时制冷机的整机效率最高。To investigate the impact of the length of the inertance tube on the output efficiency of the linear compressor and the coupling characteristics between the compressor and the cold finger,the overall efficiency of the 100-140 Hz 2 kg high-frequency pulse tube cryocooler was theoretically analyzed. The effects of different inertance tube lengths on the piston stroke,phase, and pressure wave of the compressor were experimentally studied,and the output PV power of the compressor was calculated. The results show that there is a specific frequency corresponding to different inertance tube combinations,which makes the compressor have the highest efficiency. The operating parameters of the cryocooler with the best overall efficiency are different from those of the compressor with the best efficiency,when the inertance tube is adjusted to match the compressor resonant frequency with the cold finger,the overall efficiency of the cryocooler is the highest.

关 键 词：惯性管 压缩机效率 耦合 PV功 

分 类 号：TB651[一般工业技术—制冷工程]