Next generation bare wire water heater
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United States of America Patent
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Jan 12, 2016
Grant Date -
Jun 26, 2014
app pub date -
Mar 15, 2013
filing date -
Dec 21, 2012
priority date (Note) -
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Abstract
A heating unit for heating fluid is described having at least one electrical resistance heating element on an outer surface of a tube. At least one indexed groove is provided around a surface of the tube allowing for at least one retention clip to hold the electrical resistance heating element. A heating chamber is also provided to enclose a portion of the tube and to provide a flow channel therebetween. The heating chamber includes an optical sensor to detect overheating of the at least one electrical resistance heating element. Fluid is heated by flowing over the surface of the at least one electrical resistance heating element and through the tube.
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