Refrigeration – Processes – Treating an article
Patent
1988-07-16
1989-08-01
Capossela, Ronald C.
Refrigeration
Processes
Treating an article
62374, 62380, F25D 1306
Patent
active
048523585
ABSTRACT:
The present invention comprises a method and apparatus to be used in the cryogenic fast freezing of organic comprised articles such a biologicals and foodstuffs. The method enables control of the time-temperature profile of an article as it progresses through the freezing process, and thus provides the highest quality frozen article. The method requires at least two applications of liquid cryogen to the surface of the article during the freezing process, wherein the applications of liquid cryogen are spaced in time in a manner which essentially prevents thermal cracking and embrittlement of portions of the article, while simultaneously ensuring that a frozen crust which operates as a barrier to water conduction or transmission out of the article remains on the articles throughout the freezing process. In addition, the method and apparatus provide an improved efficiency of operation in terms of utilization of the cryogenic medium within the freezing process.
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Koach Engineering and Manufacturing Inc., Sun Valley, Calif., Undated Brochure.
Acharya Arun
Nowobilski Jeffert J.
Capossela Ronald C.
Church Shirley L.
Ktorides Stanley
Union Carbide Corporation
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