BURNER DEVICE AND TWO-STAGE COMBUSTION TYPE BURNER DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a burner device and a two-stage combustion type burner device, improving ignitability and combustion stability in a mixing section, and achieving continuous combustion by preventing misfire during combustion.;SOLUTION: This burner device includes: a fuel feeding pipe 3 having a tip end 2; an air feeding pipe 4 concentrically formed outward of the fuel feeding pipe and feeding air toward the tip end; and the mixing section 5 connected to the tip end of the air feeding pipe and into which the tip end of the fuel feeding pipe is inserted so that air supplied from the air feeding pipe is mixed with fuel injected from the fuel feeding pipe to form flame. A fuel injection hole 6 is formed in the tip end of the fuel feeding pipe in its peripheral direction. Thereby, a concentrated fuel area generating zone X for generating a concentrated fuel area Z in the mixing zone is formed, and also a lean fuel area generating zone Y with no fuel injection hole arranged is formed between both the ends of the concentrated fuel area generating zone X in continuity with the concentrated fuel area generating zone X so that a lean fuel area W (combustible area) is generated in the mixing section.;COPYRIGHT: (C)2010,JPO&INPIT