Rapid cooling through a thin flexible membrane

Details Rapid cooling through a thin flexible membrane Rapid cooling through a thin flexible membrane

1990-03-19

1992-12-08

Bennet, Henry A.

Refrigeration

Processes

Treating an article

62373, F27D 1702

Patent

active

051687127

ABSTRACT:
Rapid cooling or freezing of foodstuffs, perishables or blood products is accomplished by using a thin film membrane to totally envelope the foodstuffs or blood product only during the heat extraction period. This thin film encapsulation system closes around the item and is held tightly to the item by atmospheric and/or hydrostatic pressure. Once the item is encapsulated, low temperature heat transfer fluids are then circulated on the exterior surface of the membrane, thus extracting the heat within the item through the thickness of the membrane. Upon completion of the necessary chilling or freezing, the atmospheric and/or hydrostatic pressure is withdrawn and the chilled or frozen item is extracted.

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