Title:
CRYOCOOLER COLD-END ASSEMBLY APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO2005121658
Kind Code:
A3
Abstract:
A cryocooler cold end assembly is disclosed. The assembly includes a unitary external, outer housing (201). By constructing the housing (201) from a single unitary metal shell, part count is reduced from prior art assemblies. Additionally, all brazing requirements previously necessary to secure and seal the components are eliminated. Further, due to one or more machining steps subsequent to manufacturing/forming the external sealed housing, the tolerances are improved. This allows for shrink to fit assembly of several components and also results in improved straight-line accuracy between the piston bore (152) and the displacer cylinder (120). Due to this latter improvement, the need for a displacer liner is eliminated.
Inventors:
O'BAID AMR HASSAN (US)
HANES MARK (US)
HANES MARK (US)
Application Number:
PCT/US2004/040399
Publication Date:
February 09, 2006
Filing Date:
December 03, 2004
Export Citation:
Assignee:
SUPERCONDUCTOR TECH (US)
O'BAID AMR HASSAN (US)
HANES MARK (US)
O'BAID AMR HASSAN (US)
HANES MARK (US)
International Classes:
F25B9/14; (IPC1-7): F25B9/14
Foreign References:
| US6446444B1 | 2002-09-10 | |||
| US5020218A | 1991-06-04 | |||
| DE3836959A1 | 1990-05-03 | |||
| US6446336B1 | 2002-09-10 | |||
| US3148512A | 1964-09-15 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 04 4 August 2002 (2002-08-04)
STOLFI F R ET AL NATIONAL BUREAU OF STANDARDS: "PARAMETRIC TESTING OF A LINEARLY DRIVEN STIRLING CRYOGENIC REFRIGERATOR", PROCEEDINGS OF THE CRYOCOOLER CONFERENCE. BOULDER, SEPT. 17 - 18, 1984, BOULDER, NBS, US, vol. CONF. 3, 17 September 1984 (1984-09-17), pages 80 - 98, XP000041824
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 09 3 September 2003 (2003-09-03)
STOLFI F R ET AL NATIONAL BUREAU OF STANDARDS: "PARAMETRIC TESTING OF A LINEARLY DRIVEN STIRLING CRYOGENIC REFRIGERATOR", PROCEEDINGS OF THE CRYOCOOLER CONFERENCE. BOULDER, SEPT. 17 - 18, 1984, BOULDER, NBS, US, vol. CONF. 3, 17 September 1984 (1984-09-17), pages 80 - 98, XP000041824
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 09 3 September 2003 (2003-09-03)
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