Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Patent
1996-11-06
1998-08-11
Dority, Carroll B.
Liquid heaters and vaporizers
Stand boiler
Fluid fuel burner
126361, 122 14, F22B 500
Patent
active
057912980
ABSTRACT:
An atmospheric, low emission gas burner within the combustion chamber of a hot water heater in which the combustion chamber is sealed against entry of air except for the air/gas mixture entering through the burner. The burner comprises a venturi through which gas and air enter and a diffuser disposed about the venturi, the diffuser and venturi constructed to take advantage of the high thermal buoyancy within the water heater. The burner operates at low manifold pressure and creates low emissions of NOx and CO. The burner diffuser has a multiplicity of small slots disposed on the upper surface which is covered by a course mesh fabric material having relatively large openings designed to keep the flame front above and off the diffuser while maintaining a stable flame that does not flashback. Several openings in the base of the combustion chamber permit escape of a pressure pulse that occurs upon initial ignition, a porous material or a flap covering each of the openings for permitting the pulse to escape but preventing air from entering therethrough.
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Burner Systems International, Inc.
Dority Carroll B.
Ruderman Alan
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