Vertical counter-flow immersion freezer
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United States of America Patent
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Apr 3, 2018
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app pub date -
Dec 31, 2013
filing date -
Dec 31, 2013
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Abstract
A product is chilled or at least partially frozen by descending against a counter-current flow of liquid nitrogen in a vertical freezer containing an immersion bath of liquid nitrogen and the chilled or at least partially frozen product is extracted from the bath. The product may optionally be a liquid, semi-solid, suspension or slurry.
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