Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent
1994-06-28
1996-01-09
Capossela, Ronald C.
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
60520, 92174, F25B 900
Patent
active
054818796
ABSTRACT:
A refrigerator with a regenerator having a good and stable cooling function comprises: a cylinder having a circular inner surface and being made of a material having a low heat conductivity and a high hermetic sealing performance; a displacer having a circular outer surface having a slightly smaller diameter than the inner surface of the cylinder, forming a main gas passage there through, and containing regeneration material therein, the displacer being disposed in the cylinder to be reciprocally movable in the axial direction the cylinder and forming an expansion space at one end of the cylinder; a groove pattern formed on one of the outer surface of the displacer and the inner surface of the cylinder, for forming an auxiliary gas passage for supplying gas into and recovering the gas from the expansion space, the groove pattern including a groove at least partially formed along the direction intersecting the axial direction of the displacer, such as a helical groove, the groove allowing a gas flowing through a gap between the cylinder and the displacer from one end to the other end of the displacer to positively heat-exchange with the cylinder and the displacer.
REFERENCES:
patent: 3292501 (1966-12-01), Verbeek
patent: 3364675 (1968-01-01), Dorer
patent: 3396976 (1968-08-01), Reinhoudt et al.
patent: 3413802 (1968-12-01), Cowans
Asami Hiroshi
Suzuki Mitsuru
Capossela Ronald C.
Sumitomo Heavy Industrie's, Ltd.
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