Burner apparatus having an air dam and mixer tube

Details Burner apparatus having an air dam and mixer tube Burner apparatus having an air dam and mixer tube

1998-01-20

2000-06-13

Lazarus, Ira S.

Combustion

Separately supplied or controlled, physically related flame...

431285, 431249, 431350, 431354, 126389, F23Q 900, F23D 1462

Patent

active

060742003

ABSTRACT:
A pilot burner apparatus for use with gas-fired appliances, such as gas-fired water heaters, is provided with a structure configured for the early detection, and response to, the presence of flammable vapor in the atmosphere ambient to the appliance. Combustion air for the pilot burner is taken from that region of the ambient atmosphere, most likely to become contaminated with flammable vapor first. One or more flame characteristics of the pilot burner flame are monitored, and if the flame characteristics depart from a predetermined range of parameters, gas flow to the pilot and main burner(s) of the appliance are cut off. The sensitivity of the pilot burner is such that flammable vapors are detected before the concentration of flammable vapors car rise to the lower flammability limit of the anticipated flammable vapor(s).

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