Dry gas curtain for cryogenic surface
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United States of America Patent
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-
Jan 7, 1997
Grant Date -
N/A
app pub date -
Sep 7, 1995
filing date -
Sep 7, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus to provide a laminar curtain of dry gas over a cryogenic working surface includes a housing duct extending longitudinally from the working surface. A honeycomb member fills a section of the duct adjacent to the working surface, each honeycomb cell having a through channel in the longitudinal direction. A porous foam with through porosity fills a section of the duct adjacent to the honeycomb member oppositely from the working surface. A plenum is adjacent to the porous member oppositely from the honeycomb. Dry gas is supplied to the plenum to flow through the foam and honeycomb to effect the laminar curtain.
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