斯特林型低温冰箱的试验研究  

Experimental Research of Low Temperature Refrigerator with Stirling-type Pulse Tube Cooler

作　　者：刘业凤[1] 陈申[1] 周国梁[1] LIU Ye-feng;CHEN Shen;ZHOU Guo-liang(University of Shanghai for Science&Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学,上海200093

出　　处：《流体机械》2018年第1期69-72,88,共5页Fluid Machinery

基　　金：上海市浦江人才计划资助项目(17PJ1407200)

摘　　要：研制了一种采用斯特林型脉管制冷机为冷源,氦气为工质,有效容积为28 L,满足储存温度为-80℃的低温冰箱。该冰箱的制冷机采用直线电机驱动,冷指与箱体底部直接连接。长方体型箱体采用真空隔热板、聚氨酯发泡、气凝胶三层隔热材料复合保温技术。该低温冰箱在稳定运行下输入功率160 W、运行频率52 Hz时,制冷量为30 W,箱体内空气平均温度达到-93℃,箱体内空气平均降温速率为4.75℃/h,满足试验样品的低温储存需求,并提出相关的改进建议,为以后低温冰箱的设计提供参考。An-80℃low temperature refrigerator with stirling-type pulse tube cooler was developed.Its refrigerant is helium and the effective cubage is 28 L.The stirling cooler is driven by a linear motor,the cold-finger is installed at the bottom of refrigerator for directly cooling.Compound thermal insulation is adopted in the cuboid cabinet,the inner layer is vacuum insulation panel,the interlayer is aerogel and the outer layer is rigid polyurethane foam.Internal temperature of the refrigerator can be below-93℃with the input power of 180 W and frequency of 52 Hz,and the output cooling capacity is 30 W during stable running,the average rate of temperature fall is 5℃/h,the refrigerator meet requirement of long term storage for laboratory sample,suggestions for improvement were proposed then.

关 键 词：脉管低温制冷机 电冰箱 斯特林循环 制冷性能试验 

分 类 号：TH12[机械工程—机械设计及理论] TB65[一般工业技术—制冷工程]