Cryogenic cooling system apparatus and method
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United States of America Patent
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Dec 9, 2003
Grant Date -
Feb 13, 2003
app pub date -
Jun 17, 2002
filing date -
Jun 15, 2001
priority date (Note) -
Expired
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Abstract
A method and apparatus for using a cryogen for cooling articles, particularly having applications for chilling extrusions, food, and similar articles, utilizing dispersion of liquid cryogen into a feed chamber wherein it is substantially vaporized and then circulated through a cooling chamber containing the article to be cooled. A circulation device can circulate the vaporized cryogen through the cooling chamber, or through the article, at a variably controllable velocity to enhance the cooling efficiency using the principle of forced air convection and to provide improved temperature control in the system.
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