Patent ID: 6062848
Filing Date: 2000-05-16
Classification: F23C,F23D

Abstract:
A burner comprising:a burner plate;a multiplicity of combustion air ports extending through the plate toward a combustion chamber;a multiplicity of spaced-apart first fuel nozzles each surrounded by one of the combustion air ports for directing fuel gas therethrough to the combustion chamber;a multiplicity of second fuel nozzles projecting through the plate toward the combustion chamber and being spaced apart from each other and from the combustion air ports for directing fuel therethrough to the combustion chamber; andmeans for controlling the flows of fuel and combustion air through the first and second nozzles and the combustion air ports in concert with each other into the combustion chamber to generate a flame, wherein the second fuel nozzles are coupled to a fuel source for discharging fuel into the combustion chamber constituting about 2 to about 15 percent of a total amount of fuel flowing through all fuel nozzles of the burner into the combustion chamber.