120 Hz线性压缩机与冷指匹配特性分析

针对一款频率为120 Hz的同轴型脉管冷指，设计了一台高频动磁式线性压缩机，并采用有限元分析方法进行了电机本体的设计。实验结果表明，制冷机在34 W输入功率下可实现80 K 时1 W的制冷性能。在此压缩机模型的基础上，与一台相同频率的斯特林冷指进行了匹配，通过对压缩机的动子板簧重新设计，在34 W输入功率下达到了80 K时 1 W的制冷量，证明此设计方法有效。

Analysis of Coupling Characteristics of a 120 Hz Linear Compressor with Cold Fingers

A high frequency moving-magnet linear compressor was designed for a 120 Hz coaxial pulse tube cold finger and a motor model was designed by means of finite element analysis. The experimental results showed that the crycooler could achieve 1 W@80 K cooling capacity with input power of 34 W. On the basis of this compressor model, the compressor was used to drive a Stirling cold finger with same frequency. By redesigning the flexure-bearing and moving mass, the Stirling cold finger achieved 1 W@80 K cooling capacity with input power of 34 W. This showed that this design method was effective.