UV ray irradiation apparatus having scraper rings fitted to light transmission tubes
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United States of America Patent
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Jan 11, 2000
Issued Date -
N/A
app pub date -
Mar 11, 1998
filing date -
Mar 12, 1997
priority date (Note) -
Expired
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Abstract
A UV irradiation apparatus for treating fluids employs light transmission tubes having UV lamps therein and a smooth fluorocarbon resin layer over the outside surface of the tubes. For example, a Teflon.RTM. sheath or film over the outside surface of the tubes may be employed. A tightly fitted scraper ring with an attached cleaning fluid chamber reciprocates over the coated tubes to clean contaminants from the surface thereof, which contaminants would otherwise impair the UV irradiation ability of the lamps within the tubes.
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