微型节流制冷器降温时间的优化研究

The Optimization on the Cooldown Time of a Miniature JT Cooler

摘要: 本文介绍了一款高德红外快速制冷型的微型节流制冷器及对该制冷器从充气容积、杜瓦和翅片管换热器等方面的优化研究。使用优化的制冷器后,红外探测器焦平面的降温时间由18 s@100 K缩短至4.5 s@100 K,且校正后图像的非均匀性小于6 mV。

Abstract: In this paper,an infrared detector with fast cool-down JT system of Wuhan Guide Infrared Co.,Ltd was in-troduced.The cryocooler was optimized in the aspects of inflation volume,Dewar and finned tube exchanger.Equipped with the optimized JT minicryocooler,the cool down time of the detector was shortened from 18 s@100 K to 4.5 s@100 K,and the non-uniformity of the corrected image is less than 6 mV.