Cryogenic cooler

Details Cryogenic cooler Cryogenic cooler

1994-08-05

1996-08-06

Kilner, Christopher

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

62 511, 62295, 62383, F25B 900, F25B 1900, F25D 1900

Patent

active

055422543

ABSTRACT:
An improved cryogenic cooler 100 includes a flange 106 with an elongated pressure vessel 120 extending therefrom. The pressure vessel 120 is connected to the flange 106 at a proximal end thereof. The pressure vessel 120 is adapted to cool a surface in the proximity of the distal end thereof. Vibration isolation is provided at both proximal and distal ends of the elongated pressure vessel. A coupler 126 serves to maintain a gap between the distal end of the pressure vessel 120 and the surface at cryogenic temperatures. In a specific embodiment, the coupler 234 has a coefficient of thermal expansion which is less than the coefficient of thermal expansion of an end cap 224 on the pressure vessel. The coefficients of expansion are chosen to provide a tight slip fit between the cooler and the coupler at ambient temperatures and a very small continuous air gap at cryogenic temperatures. Another novel feature is the provision of an energy-absorbing ring 114 within the flange to dissipate vibration therein.

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patent: 4763483 (1988-08-01), Olsen
patent: 4862697 (1989-09-01), Tugal et al.
patent: 4872321 (1989-10-01), Buchanan
patent: 5056319 (1991-10-01), Strasser
patent: 5129232 (1992-07-01), Minas et al.

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