| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion device where a mixed gas before being emitted from a flame hole is never leaked carelessly and a mixed pipe can be securely mounted when assembling a burner cylinder. SOLUTION: A flange 28 at the lower end of a mixed pipe 16 is pressed by a flange 27 at the lower end of a burner cylinder 17 on a ring-shaped burner seat 15, and at the same time the lower portion of the mixed pipe 16 is mounted to the inside of the lower portion of the burner cylinder 17 entire-periphery press fitting, thus preventing a fuel gas from leaking from a press fitting part 29. Also, the mixed pipe 16 is allowed not to be disengaged from the burner cylinder 17 easily, thus maintaining the mixed pipe 16 and the burner cylinder 17 constantly coaxially, appropriately mixing the combustion gas and primary air, making uniform the amount of mixed air supplied to the flame hole 13, and achieving stable combustion without deviating the size and shape of flame by making quantity of mixture supplied to the flame port parts 23 uniform.
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