Cryogenic cooler with annular regenerator and clearance seals

Details Cryogenic cooler with annular regenerator and clearance seals Cryogenic cooler with annular regenerator and clearance seals

1980-06-27

1981-07-14

Capossela, Ronald C.

Refrigeration

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

F25B 900

Patent

active

042779480

ABSTRACT:
A Stirling Cooler with a three stage cold finger. The finger includes a sped displacer in a stepped cylinder. The cylinder is loosely surrounded by an outer shell, with regenerator material in the space between the outer shell and the cylinder. The displacer-cylinder define three swept expansion spaces each communicating with the regenerator space. Clearance seals exist between the displacer and the cylinder because of small diametrical clearance and long axial length with respect to the diametrical clearance.

REFERENCES:
patent: 3862546 (1975-01-01), Daniels
patent: 3902328 (1975-09-01), Claudet
patent: 3969907 (1976-07-01), Doody
patent: 4092833 (1978-06-01), Durenec
patent: 4143520 (1979-03-01), Zimmerman
patent: 4206609 (1980-06-01), Durenec

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