4K双小孔型二级脉管制冷机研究  

STUDY ON A 4K TWO STAGE PULSE TUBE REFRIGERATOR WITH DOUBLE ORIFICES

作　　者：陈国邦[1] 邱利民[1] 金滔[1] 郑建耀[1] 颜鹏达[1] 甘智华[1] 白煊[1] 黄志秀[1] 余建平[1] 

机构地区：[1]浙江大学制冷与低温工程研究所

出　　处：《低温物理学报》1997年第4期317-320,共4页Low Temperature Physical Letters

基　　金：国家自然科学基金

摘　　要：介绍了含有新颖的第二小孔调相器的二级脉管制冷机的基本结构，采用有阀压机驱动，通过计算机对自行研制的时序控制器进行实时控制，应用磁性蓄冷材料作为第二级蓄冷器填料，目前的实验结果为，第一级和第二级的最低制冷温度分别为４７Ｋ和３．１Ｋ，着重讨论了第二小孔在４Ｋ二级脉管制冷机中的排热调相作用．A two stage pulse tube refrigerator with a new phase shifterthe minor orificeis introduced. The on off timing system controlled by a computer and the regenerative magnetic material are used. Some test results are also presented. The lowest temperatures of first stage and second stage are 47K and 3.1K, respectively. The phase shifting function of the minor orifice in the 4K two stage pulse tube refrigerator has been emphatically discussed in the paper.

关 键 词：超低温 制冷机 低温制冷机 二级脉管制冷机 

分 类 号：TB651[一般工业技术—制冷工程] TB661