Cryogenic cabinet freezer

Details Cryogenic cabinet freezer Cryogenic cabinet freezer

F - Mech Eng,Light,Heat,Weapons

25

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62/103, 62/77, 6

F25D 13/00 (2006.01) F25B 9/02 (2006.01) F25B 25/00 (2006.01) F25D 3/10 (2006.01) F25D 11/00 (2006.01) F25D 13/06 (2006.01) F25D 17/06 (2006.01) F25D 25/02 (2006.01)

Patent

CA 1164672

CRYOGENIC CABINET FREEZER 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 product 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 product. A secondary circulation effect is induced, in a manner similar to the operation of a jet pump, which amplifies the circulation and allows CO2 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.

393856

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