Spiral cryogenic freezer

Details Spiral cryogenic freezer Spiral cryogenic freezer

1988-08-05

1989-09-19

Capossela, Ronald C.

Refrigeration

Processes

Treating an article

62266, 62381, F25D 1306

Patent

active

048669466

ABSTRACT:
A method and apparatus for controlling movement of the refrigerated atmosphere (e.g. gaseous cryogen) contained inside the insulated chamber of a spiral type freezer out of, or ambient atmosphere into, the lower opening of the freezer by establishing a positive pressure of ambient atmosphere adjacent the inlet opening of the freezer.

REFERENCES:
patent: 3728869 (1973-04-01), Schmidt
patent: 4023381 (1977-05-01), Onodera
patent: 4078394 (1978-03-01), Chamberlain
patent: 4103507 (1978-08-01), Benois
patent: 4103768 (1978-08-01), Perrson
patent: 4164129 (1979-08-01), Stueber
patent: 4229947 (1980-10-01), Klee
patent: 4271683 (1981-06-01), Williams
patent: 4324110 (1982-04-01), Lovette, Jr. et al.
patent: 4356707 (1982-11-01), Tyree, Jr. et al.
patent: 4739623 (1988-04-01), Tyree, Jr. et al.

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