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Title: Cryogenic cooler apparatus

Abstract

A Malone-type final stage for utilization in a Stirling cycle cryogenic cooler apparatus includes a displacer slidable within a vessel. [sup 4]He, [sup 3]He, 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. 10 figs.

Inventors:
; ;
Issue Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE
OSTI Identifier:
7143264
Patent Number(s):
4366676 A
Application Number:
PPN: US 6-218428
Assignee:
Univ. of California, Berkeley, CA (United States) OAK; EDB-94-126385
DOE Contract Number:  
AT03-76ER70143; AS03-76ER70143
Resource Type:
Patent
Resource Relation:
Patent File Date: 22 Dec 1980
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; REFRIGERATORS; STIRLING CYCLE; CRYOGENICS; HEAT EXCHANGERS; HELIUM II; REGENERATORS; WORKING FLUIDS; EVEN-EVEN NUCLEI; FLUIDS; HELIUM 4; HELIUM ISOTOPES; ISOTOPES; LIGHT NUCLEI; NUCLEI; QUANTUM FLUIDS; STABLE ISOTOPES; THERMODYNAMIC CYCLES; 661210* - Cryogenics- (1992-)

Citation Formats

Wheatley, J.C., Paulson, D.N., and Allen, P.C. Cryogenic cooler apparatus. United States: N. p., 1983. Web.
Wheatley, J.C., Paulson, D.N., & Allen, P.C. Cryogenic cooler apparatus. United States.
Wheatley, J.C., Paulson, D.N., and Allen, P.C. Tue . "Cryogenic cooler apparatus". United States.
@article{osti_7143264,
title = {Cryogenic cooler apparatus},
author = {Wheatley, J.C. and Paulson, D.N. and Allen, P.C.},
abstractNote = {A Malone-type final stage for utilization in a Stirling cycle cryogenic cooler apparatus includes a displacer slidable within a vessel. [sup 4]He, [sup 3]He, 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. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}