The invention relates to a micro channel pulse tube refrigerator comprises a compression unit, cooler, heat exchanger, cold heat exchanger, vessel, cooler, vessel for micro channel vessel, micro channel vessel is composed of a plurality of micro channel tubes, micro channel micro nano diameter is at least below 1mm. The ratio of length to diameter is greater than or equal to 500. The axial heat conduction can be greatly reduced by the increase of the length to diameter ratio, thus the cooling efficiency of the pulse tube refrigeration mechanism is improved. At the same time, the microchannel can make the gas flow into laminar flow, so that the structure can be simplified without using the laminar source. One end of the microchannel is directly connected with the secondary cooler to form a closed end of the gas, and the other end is directly connected with the cold end heat exchanger. The micro channel is used to replace the conventional pulse tube, and the heat transfer efficiency of the heat exchanger at both ends of the pulse tube is improved, thus the cooling efficiency of the pulse tube refrigerator can be improved. This invention can improve the cooling efficiency of the pulse tube refrigerator by using the micro channel pulse tube instead of the conventional pulse tube, and the structure is simple, and the pressure resistance performance is improved.
【技术实现步骤摘要】
微通道脉管制冷机
本专利技术涉及一种脉管制冷机,尤其涉及一种用微通道代替常规型脉管的脉管制冷机,属于脉管制冷机
技术介绍
在上个世纪六十年代中期,Gifford和Longsworth提出了脉管制冷机。起初由于其效率低,并未受到人们的重视。直到八十年代中期,Mikulin,Radebaugh等小孔气库调相方式的提出,改进其效率,人们开始关注脉管制冷机。1990年,吴沛宜和朱绍伟等提出的双向进气调相方式,即在回热器入口和脉管热端之间添加一个旁通阀,进一步提高了脉管制冷机的性能'。1992年,中科院理化技术研究所周远等在双向进气型脉管制冷机的基础上做出改进提出了多路旁通型脉管制冷机。1994年,Kanao等在脉管制冷机中采用惯性管。1996年,J.L.Gao和Y.Matsubara提出了内调相型脉管结构。1997年,朱绍伟等提出主动气库脉管调相方案。2005年,美国LockheedMartin公司J.Olson提出低温惯性管的调相方案。脉管制冷机不断创新,不仅在效率上还是在最低制冷温度的探索中,都发展到了与斯特林制冷机和GM制冷机相当的水平。脉管制冷机的原理是 ...
【技术保护点】
一种微通道脉管制冷机,包括依次连接的压缩单元、主冷却器、回热器、冷端换热器、脉管、次冷却器,其特征在于:所述脉管为微通道脉管,微通道脉管由多根微通道管组成。
【技术特征摘要】
1.一种微通道脉管制冷机,包括依次连接的压缩单元、主冷却器、回热器、冷端换热器、脉管、次冷却器,其特征在于:所述脉管为微通道脉管,微通道脉管由多根微通道管组成。2.根据权利要求1所述的微通道脉管制冷机,其特征在于:所述微通道管直径为微纳米级至少在1mm以下,长径比≥500。3.根据权利要求1所述的微通道脉管制冷机,其...
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