| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a gas fired burner which achieves excellence in ignition stability and prevention of backfire to be made ideal for use as an exhaust recombustion gas fired burner in a type wherein a rich fuel nozzle and a lean fuel nozzles sandwiching it are arranged. SOLUTION: An exhaust recombustion gas fired burner is made up of lean fuel nozzles 2 sandwiching a rich fuel nozzle l. The rich fuel nozzle 1 has a fuel nozzle 11 on the perimeter of a flame holder 4 having an air blowoff hole at the center while having an exhaust supply path. On the other hand, a lean fuel nozzle 2 has a premixing nozzle which mixes a fuel injected from a fuel nozzle pipe 15 arranged inside to release it and an exhaust injection slit on the perimeter thereof.</p> |
