Pilot burner system for water heaters
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United States of America Patent
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May 26, 2015
Grant Date -
Apr 10, 2014
app pub date -
Oct 9, 2012
filing date -
Oct 9, 2012
priority date (Note) -
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Abstract
A tube disposed in the combustion chamber of a standing pilot type fuel-fired water heater is used to increase the overall efficiency of the water heater by improving the heat transfer from the pilot flame to the tank during standby periods by funneling the standing pilot flame upwardly through the tube in a manner concentrating the pilot flame heat against an underside portion of the bottom head of the water heater tank. To further increase water heater efficiency, the pilot burner is of a dual input type. Various pilot burner operational algorithm modes are disclosed for causing the pilot burner to operate at a high firing rate during main burner operation, and at a low firing rate during standby periods.
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