驱动微型节流制冷机的压缩机

Compressors for micromachined Joule-Thomson cryocoolers

MEMS技术为节流制冷机的微型化开辟了新的方向,但现阶段,微型节流制冷机还主要依靠体积相对庞大的气瓶来提供高压气源。这样的开式制冷系统整体体积庞大,在很大程度上限制了微型节流制冷机的应用潜力。若要减小制冷系统整体体积,需要与微型节流制冷机相匹配的微型压缩机来为其提供高压气源,从而实现紧凑的闭式制冷系统。本文介绍了可用于驱动微型节流制冷机的吸附式压缩机的工作原理、研究现状和发展趋势。

MEMS technology pens up a new method for the miniaturization of Joule-Thomson(JT)cryocoolers.However,JT micro coolers are mainly driven by using relatively large high-pressure gas cylinders at present.This type of open-loop cryogenic systems have large volume,which inherently restricts the potential applications of micro coolers.To reduce the system volume,it is required to have miniature compressors that match JT micro coolers to provide high-pressure gases,closing the cryogenic systems.This paper introduces the working principle,research status and future development of sorption compressors for driving JT micro coolers.