Patent ID: 6951097
Filing Date: 2005-10-04
Classification: F23D,F23R,Y02E

Abstract:
1. 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 supplying oxygen-containing gas to the first channel and the second channel, and gas supplying means 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 a plurality of first supply openings supplying the fuel gas into the first channel are distributed in the first combustion channel at gradually increasing radial distances away from the second channel; said first supply openings are oriented such that fuel gas from each of said first supply openings encounters a discharge resistance caused by the flow of the oxygen-containing gas; and each one of said discharge resistances increases as said supply openings become more radially distant from the second combustion channel.