Exhaust system for a cryogenic freezer

Details Exhaust system for a cryogenic freezer Exhaust system for a cryogenic freezer

1993-02-25

1997-02-25

Fox, John C.

Refrigeration

Processes

Treating an article

62186, F25D 1306

Patent

active

056050496

ABSTRACT:
Method and apparatus for controlling removal of gaseous cryogen from a continuous tunnel type freezer wherein the cryogen and product to be frozen travel in counterflow heat exchange relation to minimize ambient atmosphere moving into the tunnel and out of the exhaust system with the exhausted gaseous cryogen.

REFERENCES:
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patent: 3813895 (1974-06-01), Klee et al.
patent: 3892104 (1975-07-01), Klee et al.
patent: 4528819 (1985-07-01), Klee
patent: 4627244 (1986-12-01), Willhoft
patent: 4783972 (1988-11-01), Tyree, Jr. et al.
patent: 4800728 (1989-01-01), Klee
patent: 4947654 (1990-08-01), Sink et al.
patent: 4955206 (1990-09-01), Lang et al.
patent: 5054242 (1991-10-01), Klee

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