| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of thermal strain noise of a gas burner even after a long time use. SOLUTION: A burner box 2 surrounding the burner port of a burner main body 1 is provided for suppressing the generation of NOx by limiting the supply of secondary air. The burner box 2 has the structure of fastening the latches 2a, 2b, 2c and 2d on the both edges of the burner box 2 with the long holes of fixing metals 12 and 13. Therefore, the loosening of the bent structured part of the latches 2a, 2b, 2c and 2d on both the sides of the burner box 2 and the generation of the thermal strain noise can be prevented after the long time use.
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