Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent
1998-10-22
2000-06-20
Bennett, Henry
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
F25B 900
Patent
active
060763582
ABSTRACT:
An improved integral cryogenic refrigerator, or cryocooler, for cooling an electronic device to cryogenic temperature includes a regenerator sleeve having a cylindrical base portion and an integrally formed cold well tube. The cold well tube includes a thin outer wall and a longitudinal bore passing therethrough for providing an expansion cylinder for receiving a pressurized refrigeration gas therein. An outer surface of the thin outer wall of the cold well tube has an outer diameter substantially centered with respect to the longitudinal bore thereby providing a circular cross-section to the thin outer wall. At least one facet is formed onto the outer diameter by removing material from the outer diameter to reduce the thickness of the thin outer wall in the region of the facet thereby reducing the cross-sectional area of the outer wall. The facet may extend substantially over the full length of the cold well tube, however, a circular cross-sectional mounting area is beneficially provided one end for receiving the cold well end cap thereon.
REFERENCES:
patent: 4858442 (1989-08-01), Stetson
Bennett Henry
Drake Malik N.
Inframetrics Inc.
Kelley Edward L.
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