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.:
- Univ. of California (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 7143264
- Patent Number(s):
- 4366676
- Application Number:
- PPN: US 6-218428
- Assignee:
- Univ. of California, Berkeley, CA (United States)
- 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 = {Tue Jan 04 00:00:00 EST 1983},
month = {Tue Jan 04 00:00:00 EST 1983}
}