Refrigeration – Processes – Treating an article
Patent
1985-03-11
1986-02-11
Capossela, Ronald C.
Refrigeration
Processes
Treating an article
62374, 62381, F25D 1306
Patent
active
045692041
ABSTRACT:
A method and apparatus are provided for rapidly and efficiently cooling a flow of a food substance such as ground chicken meat while simultaneously conveying the food substance along a relatively short, upwardly inclined travel path that is defined by an inner chamber of an elongate housing assembly. A power driven auger extends along the travel path and is journaled by the housing assembly for rotation within the inner chamber. An inlet hopper is provided for introducing a flow of relatively warm food substance into a lower end region of the inner chamber. A discharge spout is provided for discharging a cooled flow of the food substance from an upper end region of the inner chamber. Cooling of the food substance as it is conveyed along the travel path is effected by providing the housing assembly with a refrigerant chamber that surrounds but is segregated from the inner chamber. Liquid cryogen is introduced into the refrigerant chamber and evaporates to form a gas as it serves to indirectly cool the food substance flow that is being fed through the inner chamber. The temperature of the discharging food substance is maintained within desired limits by monitoring the temperature of the evaporated cryogen that is permitted to discharge from the refrigerant chamber, and by utilizing the monitored gas discharge temperature as a key factor in controlling the supply of liquid cryogen to the refrigerant chamber.
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Cork William H.
Ott Lesley E.
AGA A.B.
Burge David A.
Capossela Ronald C.
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