发明名称 |
Cryogenic cooler apparatus |
摘要 |
A Malone-type final stage for utilization in a Stirling cycle cryogenic cooler apparatus includes a displacer slidable within a vessel. 4He, 3He, or a mixture thereof is made to flow in a pulsating unidirectional manner through a regenerator in the displacer by utilization of check valves in separate fluid channels. Stacked copper screen members extend through the channels and through a second static thermodynamic medium within the displacer to provide efficient lateral heat exchange and enable cooling to temperatures in the range of 3-4 K. Another embodiment utilizes sintered copper particles in the regenerator. Also described is a final stage that has a non-thermally conducting displacer having passages with check valves for directing fluid past a regenerator formed in the surrounding vessel.
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申请公布号 |
US4366676(A) |
申请公布日期 |
1983.01.04 |
申请号 |
US19800218428 |
申请日期 |
1980.12.22 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
WHEATLEY, JOHN C.;PAULSON, DOUGLAS N.;ALLEN, PAUL C. |
分类号 |
F02G1/044;F02G1/055;F25B9/14;F25B23/00;(IPC1-7):F25B9/00 |
主分类号 |
F02G1/044 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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