35 K/0.6 W多路旁通单级脉冲管制冷机  

35 K/0.6 W Multi-Bypass Single-Stage Pulse Tube Cryocooler

作　　者：杨俊玲[1,2] 蔡惠坤[1,2] 杨鲁伟[1] 周远[1] 

机构地区：[1]中国科学院理化技术研究所,北京100080 [2]中国科学院研究生院,北京100039

出　　处：《工程热物理学报》2011年第12期2013-2016,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金重大项目(No.50890181);国家自然科学基金资助项目(No.51076160)

摘　　要：针对35 K温区应用这一制冷要求,围绕多路旁通方案高频同轴脉冲管制冷机这一拥有我国自主知识产权的技术开展了系统的实验研究。实验表明多路旁通流通面积和惯性管长度都有最佳值,是关键影响因素;引入双向进气后,制冷剂温度降低10 K左右,是35 K应用不可缺少的因素。实验表明多路旁通优于传统单级和二级的形式。在原理样机阶段,实现了200 W输入功率下最低温度23.1 K,0.6 W/35 K的性能。在此基础上,完成了另一套全焊接结构的实用样机的研制,测试得到了200 W输入功率下0.5 W/34 K的性能。这一工作的顺利开展代表了高频多路旁通方案实用化的突破,为我国35 K高频微型低温制冷机的研制奠定了基础。For the cooling requirement operating at 35 K, multi-bypass version high frequency coaxial pulse tube refrigerator was investigated through experiments. The experiments show that the multi-bypass flow area and inertance tube are two key parameter and they have the optimized value to reach the lowest temperature. Double-inlet could further gain about 10 K temperature drop, this is fundamental for 35 K temperature scope. The experiments show that the multi-bypass version is better than that of traditional single stage version or two stage version. For the prototype pulse tube refrigerator, with 200 W input power, the lowest temperature acquired is 23.1 K and the cooling power is 0.6 W/35 K. Based on this, the practical version refrigerator is redesigned and fabricated with the typical feature of all-welding, the experiment shows the cooling power is 0.5 W/34 K with 200 W input power, quite the same to the prototype. This work means that multi-bypass version is suitable for operating at high frequency.

关 键 词：多路旁通 高频脉冲管制冷机 同轴 35 K温区 

分 类 号：TB651[一般工业技术—制冷工程]