一种喷射式快速启动制冷器的研制  

Design and research on the spraying-type and fast-cooling down cooler

作　　者：李秀强[1] 胡音[1] 王三煜[1] 

机构地区：[1]中国空空导弹研究院,洛阳471009

出　　处：《低温与超导》2010年第4期22-24,29,共4页Cryogenics and Superconductivity

摘　　要：为了提高红外探测器用制冷器的启动时间,研究设计了一种新型喷射式快速启动制冷器。这种制冷器带有两级制冷,比传统的单级制冷器启动时间更短,采用多层换热管结构和多个节流孔技术,极大地提高了其换热效率和降温时间。对这种制冷器的工作原理进行了分析,确定了影响其启动时间的因素。设计了一系列试验,测试得出了这种制冷器在不同氮气压力下的启动时间。该实验结果表明,这种制冷器能在数秒内达到77K,实现了快速启动,并对更进一步提高其启动时间的方法提出了建议。In order to improve the coolerg cooling down time for infrared detector, a spraying -type and fast -cooling down cooler was designed. Cooling - dowm time of the cooler with precooler was shorter than a traditional single stage cooler＇s. With using the five heat - exchanger tubes and four throttles, the cooler had high heat - exchange efficiency. The cooling - down time curve of the cooler at different nitrogen pressures was obtained. The test results showed the cooler can achieve 77K in a few seconds. And suggestion was provided to improve the cooling-down time.

关 键 词：喷射式 快速启动 制冷器 红外探测器 

分 类 号：TB651[一般工业技术—制冷工程]