Method and apparatus for gas flow control in a cryogenic freezer

Details Method and apparatus for gas flow control in a cryogenic freezer Method and apparatus for gas flow control in a cryogenic freezer

1987-09-18

1989-01-31

Capossela, Ronald C.

Refrigeration

Processes

Treating an article

62186, 62208, 62374, 62380, F25D 1306

Patent

active

048007285

ABSTRACT:
Method and apparatus for controlling gaseous cryogen flow through a continuous tunnel type freezer wherein the cryogen and product to be frozen travel in counterflow heat exchange relation to minimize egress of cryogen from, or ingress of ambient air into the product discharge opening in the freezer.

REFERENCES:
patent: 3345828 (1967-10-01), Klee et al.
patent: 3403527 (1968-10-01), Berreth et al.
patent: 3613386 (1971-10-01), Klee
patent: 3813895 (1974-06-01), Klee et al.
patent: 3892104 (1975-07-01), Klee et al,
patent: 4276753 (1981-07-01), Sandberg et al.
patent: 4528819 (1985-07-01), Klee

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