Importance

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Abstract

A refrigeration immersion vessel primarily designed for direct immersion of comestibles into liquid chlorofluorocarbons (CFC's) at approximate minus 20 degrees Fahrenheit is described wherein said vessel employs pairs of rotary vane valves with internal vacuum in communication with a closed system to recycle CFC vapors into said vessel while preventing atmospheric air from entering it, said vessel further utilizing different CFC from a source external of the vessel and of lower boiling point to maintain temperature of vessel reservoir refrigerant, said vessel also having condensers using the external CFC refrigerant for recondensing internal CFC vapors, controlling vessel reservoir temperature and temperature of vessel refrigerant storage outside said vessel, said vessel further comprising an inclined internal conveyor means and bottom for drainage by gravity of excess refrigerant into its reservoir.

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First Claim