Cryogenic cooler apparatus

Patent · Tue Jan 04 00:00:00 EST 1983

OSTI ID:7143264

Wheatley, J C; Paulson, D N; Allen, P C

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.

• Research Organization: Univ. of California (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AT03-76ER70143; AS03-76ER70143
• Assignee: Univ. of California, Berkeley, CA (United States)
• Patent Number(s): US 4366676; A
• Application Number: PPN: US 6-218428
• OSTI ID: 7143264
• Resource Relation: Patent File Date: 22 Dec 1980
• Country of Publication: United States
• Language: English

Related Subjects

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-)