Cryogenic cabinet freezer

Details Cryogenic cabinet freezer Cryogenic cabinet freezer

1981-01-30

1982-11-02

Capossela, Ronald C.

Refrigeration

Article moving means

Rotary about fixed axis, e.g., rotary shelf or scraper

62384, F25D 2502

Patent

active

043567070

ABSTRACT:
A cabinet cooler or freezer which efficiently utilizes cryogenic refrigeration either with or without mechanical refrigeration. The freezer intermittently freezes relatively large batches of food by efficiently utilizing the natural expansion effect of a liquid cryogen, in combination with mechanical circulation by blowers, to create an overall circulation that efficiently removes heat from the food. A secondary circulation effect is induced, in a manner similar to the operation of a jet pump, which amplifies the circulation and allows CO.sub.2 to be employed as the cryogen with modulating valve control to achieve uniformly low temperature throughout the cabinet without snow build-up on the cabinet bottom. Some cabinet versions create a cyclonic circulation pattern about a vertical axis that is particularly effective.

REFERENCES:
patent: 2780923 (1957-02-01), Jones
patent: 3063258 (1962-11-01), Szachnitowski
patent: 3385073 (1968-05-01), Snelling
patent: 3447336 (1969-06-01), Gramse
patent: 3708995 (1973-01-01), Berg
patent: 3792595 (1974-02-01), Willis
"Rapid Freeze", Victory Manufacturing--1976.

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