Cryo-mechanical combination freezer

Details Cryo-mechanical combination freezer Cryo-mechanical combination freezer

1988-09-20

1989-08-15

Capossela, Ronald O.

Refrigeration

Processes

Treating an article

62332, 62374, 62380, 62434, F25D 1306

Patent

active

048562858

ABSTRACT:
This invention pertains to a method and apparatus for cooling and freezing of organic-comprised articles which makes use of liquid cryogen and of chilled gases from a mechanical refrigeration system to provide an economical process for reducing the temperature of the article. The article is contacted with a liquid cryogen and subsequently contacted with circulating cold gases in the mechanical refrigeration system. The improvement relates to the method and apparatus for producing the cold gases which are used in the mechanical refrigeration system; the method comprises using the cryogen vapors generated upon contact of the articles with the liquid cryogen as an indirect heat exchange fluid for removing heat from heat exchange fluids used in the mechanical refrigeration system. This indirect heat transfer using cryogen vapors supplements cooling of the mechanical refrigeration system cold gases by the mechanical refrigeration system chiller.

REFERENCES:
patent: 3156101 (1964-11-01), McGuffey
patent: 3298188 (1967-01-01), Webster et al.
patent: 3376710 (1968-04-01), Hirtensteiner
patent: 3507128 (1970-04-01), Murphy et al.
patent: 3512370 (1970-05-01), Murphy et al.
patent: 3531946 (1970-10-01), Hart
patent: 3805538 (1974-04-01), Fritch, Jr. et al.
patent: 4237695 (1980-12-01), Oberpriller et al.
Koach Engineering and Manufacturing, Inc. undated sales brochure entitled: "Innovation and Efficiency in Food Freezing Equipment," (No date given).

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