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.
- Inventors:
-
- Del Mar, CA
- Sunnyvale, CA
- Issue Date:
- Research Org.:
- Univ. of California (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 864456
- Patent Number(s):
- 4366676
- Assignee:
- Regents of University of California (Berkeley, CA)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02G - HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05C - INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- DOE Contract Number:
- AT03-76ER70143; AS03-76ER70143
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- cryogenic; cooler; apparatus; malone-type; final; stage; utilization; stirling; cycle; displacer; slidable; vessel; mixture; flow; pulsating; unidirectional; manner; regenerator; check; valves; separate; fluid; channels; stacked; copper; screen; extend; static; thermodynamic; medium; provide; efficient; lateral; heat; exchange; enable; cooling; temperatures; range; 3-4; embodiment; utilizes; sintered; particles; described; non-thermally; conducting; passages; directing; past; formed; surrounding; stirling cycle; embodiment utilizes; provide efficient; heat exchange; check valve; thermodynamic medium; check valves; fluid channels; final stage; fluid past; cooler apparatus; cryogenic cooler; /62/505/
Citation Formats
Wheatley, John C, Paulson, Douglas N, and Allen, Paul C. Cryogenic cooler apparatus. United States: N. p., 1983.
Web.
Wheatley, John C, Paulson, Douglas N, & Allen, Paul C. Cryogenic cooler apparatus. United States.
Wheatley, John C, Paulson, Douglas N, and Allen, Paul C. Sat .
"Cryogenic cooler apparatus". United States. https://www.osti.gov/servlets/purl/864456.
@article{osti_864456,
title = {Cryogenic cooler apparatus},
author = {Wheatley, John C and Paulson, Douglas N and Allen, Paul 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}