Apparatus and methods for cryogenic treatment of materials
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United States of America Patent
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Feb 10, 1998
Grant Date -
N/A
app pub date -
May 28, 1996
filing date -
May 28, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device and method for freezing or cooling of food or other items using cryogenic and low temperature coolants is provided. The device includes a coolant container which contains the cryogenic or low temperature coolant. The device will also include a freezing compartment with a lower surface which is immediately adjacent to the coolant container. The coolant container includes a valve for controlling the pressure within the coolant container, and thereby control the temperature of the coolant. When the materials to be cooled are placed in the freezing compartment the coolant will absorb heat from the materials via the lower surface and some of the coolant will vaporize. In a preferred embodiment the device includes a system for collecting the vapors thus created.
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