微型轻量化线性压缩机设计及实验研究

Design and Experimental Research of a Miniature Lightweight Linear Compressor

针对百万像素大面阵、双色探测器的应用需求,研制了一款微型动磁式线性压缩机。压缩机采用对置式Redlich型动磁电机驱动、单侧板弹簧支撑方案。通过有限元仿真计算和动力学建模分析,完成了电机磁路、活塞面积及行程、动子质量和整机结构的优化,实现了压缩机的轻量化设计。研制的压缩机质量为787 g,耦合气动式斯特林冷指的实测常温制冷量为1.3 W@77 K@35.6 W,比质量小于0.73 kg/W,比卡诺效率为14.1%。

To meet the demands of large array and two-color infrared detector applications,a miniature moving magnetic linear compressor was developed.This compressor is driven by moving-magnetic type linear compressor and supported by flexure springs.Lightweight design was completed based on the finite element analysis and dynamic analysis,at the same time the effect of piston diameters and strokes upon the performance of the compressor was studied,also the magnetic circuit and key structural components were designed and optimized.When this 787 g weight compressor was tested with a Stirling cold finger,the experimental results showed that its cooling capacity could achieve 1.3 W@77 K with input power of 35.6 W,while the specific mass<0.73 kg/W and the relative efficiency of Carnot is 14.1%.