20K温区GM型单级脉管制冷机初步实验  

PRELIMINARY EXPERIMENT ON A SINGLE-STAGE GM TYPE PULSE TUBE COOLER NEAR 20 K

作　　者：程章展[1] 甘智华[1] 邱利民[1] 陈国邦[1] 

机构地区：[1]浙江大学制冷与低温研究所,杭州310027

出　　处：《低温工程》2004年第3期9-12,共4页Cryogenics

基　　金：国家自然科学基金 (5 0 10 6 0 13);浙江省自然科学基金 (5 0 1134);教育部高等学校博士学科点专项科研基金(2 0 0 10 335 0 10 );教育部留学回国人员科研启动基金;德国学术交流中心DAAD(335 10 4 4 0 1 0 19)等资助

摘　　要：介绍了自行研制的一台GM型单级脉管制冷机 ,其回热器蓄冷材料采用 2 4 7目磷青铜丝网和不锈钢丝网 ,双向进气方式采用两个方向相反的精密针阀并行布置。在输入功率仅为 2kW的条件下 ,该制冷机获得了 2 2 4K的最低制冷温度 ,80K温度时的制冷量为 5 6 5W。在长达 2 4h的连续运行中 ,该机的无负荷制冷温度波动小于 0 3K。A preliminary experiment on a self-made single-stage GM type pulse tube cooler was introduced. The minimum temperature of 22.4 K and a cooling power of 5.65 W at 80 K were obtained driven by a 2 kW compressor, when the double-inlet measure consists of two parallel metering valves in the inverse directions and the regenerator matrix consists of phosphor bronze screens and stainless steel screens of 247 mesh. During the 24 successive hours operating, the minimum temperature fluctuation is less than 0.3 K.

关 键 词：单级脉管制冷机 双向进气 稳定性 GM型 蓄冷材料 低温制冷机 

分 类 号：TB651[一般工业技术—制冷工程]