Patent ID: 6684641
Filing Date: 2004-02-03
Classification: F23D,F23R,Y02E

Abstract:
A burner apparatus comprising an inner tube defining a second channel and an outer tube defining a first channel surrounding the inner tube, oxygen-containing gas supplying means for supplying oxygen-containing gas to the first channel and the second channel, and gas supplying means for supplying fuel gas to the first channel and the second channel, either the first channel or the second channel being used as a main combustion channel and the other being used as a pilot combustion channel, the main combustion channel and the pilot combustion channel receiving the supply of fuel gas for combusting it;wherein said gas supplying means includes a plurality of fluid distributors arranged in dispersion in a peripheral direction of the main combustion channel and the pilot combustion channel, each fluid distributor including a first supply opening for supplying the fuel gas into the main combustion channel, a supply line for supplying the fuel gas present inside the gas channel to the first supply opening, and distributing means incorporated in the supply line for distributing the fuel gas into the pilot combustion channel so that the distribution ratio of the fuel gas to be supplied to the first supply opening is increased in response to increase in a total supply amount of the fuel gas from the gas channel and conversely the distribution ratio of the fuel gas to be supplied to the first supply opening is decreased in response to decrease in the total supply amount.