| 摘要 |
PROBLEM TO BE SOLVED: To eliminate incomplete combustion due to the insufficiency of secondary air by forming an air rich flame and a fuel rich flame adjacent to each other to restrict the generation of NOx with the combination of an air rich combustion and a fuel rich combustion while secondary air is supplied between the air rich flame and the fuel rich flame. SOLUTION: External side is bent by bulging centered on combustion surfaces 21 and 31 to form a burner 20 for air rich combustion and a burner 30 for fuel rich combustion. Planar internal surfaces of both the burner 20 and 30 are joined back to back to array the combustion surfaces 21 and 31 on the top surface thereof while a plurality of vertical grooves are formed on the internal surfaces of both the burners 20 and 30 at a specified interval and a columnar hole 14 is formed piercing to the combustion surfaces 21 and 31 from the bottom part. |
