Relating to freezing apparatus
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United States of America Patent
Stats
-
Jul 4, 1989
Grant Date -
N/A
app pub date -
Nov 2, 1987
filing date -
Feb 25, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Frozen solid particles are obtained from liquids such as dairy produce, liquid egg, microbiological cultures and pharmaceuticals, by direct contact with liquid nitrogen in an enclosed insulated vessel which includes nozzles for injection of liquids into conduits with contact channels additionally cooled by countercurrent flow of liquid nitrogen in cooling channels. A separation auger removes partially frozen product from the liquid nitrogen and completes its freezing by contact with cold nitrogen gas.
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- Non-US Classification not provided for expired patents
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