Title:
PULSE TUBE COOLING BY CIRCULATION OF BUFFER GAS
Document Type and Number:
WIPO Patent Application WO2003058666
Kind Code:
A3
Abstract:
The present invention applies to single or two stage pulse tube (165) refrigerators that have one or more passive orifices (145) at the hot end(s) of the pulse tube(s) through which gas flows to achieve phase shifting and the phase shifting gas flow (114) circulates to a remote heat sink by adding check valves (305, 310) and an appropriate piping circuit.
Inventors:
LONGSWORTH RALPH C (US)
Application Number:
PCT/US2003/000381
Publication Date:
February 19, 2004
Filing Date:
January 08, 2003
Export Citation:
Assignee:
SHI APD CRYOGENICS INC (US)
LONGSWORTH RALPH C (US)
LONGSWORTH RALPH C (US)
International Classes:
F25B9/14; (IPC1-7): F25B9/00
Foreign References:
| US5966942A | 1999-10-19 | |||
| US6256998B1 | 2001-07-10 | |||
| JPH04225755A | 1992-08-14 | |||
| US6094921A | 2000-08-01 | |||
| US6351954B1 | 2002-03-05 | |||
| US5720172A | 1998-02-24 | |||
| US5966943A | 1999-10-19 |
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