| 摘要 |
PURPOSE:To restrict a combustion noise by a method wherein combustion air is passed through an aeration passage in a double-wall structure, discharged through a discharging port arranged in an inner wall along the inner surface of the inner wall, mixture gas flowed out through an outlet port of a uniform pressure cylinder is struck against a reflection surface, thereafter passed through the slit-like aeration port. CONSTITUTION:The section of a burner head 22 having flame ports 21 at its outer circumferential surface is cylindrical and the burner head is composed of an inner cylinder 25 and an outer cylinder 25', and a blower 26 for feeding air to a gasification chamber 24 having aeration passage 31 between the inner cylinder and the outer cylinder. A space between the burner head chamber 22' inside the cylinder and the gasification chamber 24 is divided by a partition plate 30, and at the same time a cylindrical uniform pressure cylinder 32 having one end projected into the gasification chamber 24 and the other end projected into the burner head chamber 22' by passing both ends through the partition plate 30 is arranged, the inner surface of the upper wall of the burner head chamber 22' opposing to the uniform pressure cylinder outlet port 32' is molded into a concave surface to make a reflection surface 33, the side wall surface of the reflection surface 33 is formed into a comb-like tooth form such that it has a slit-like aeration port 34 and further the lower end of the reflection surface 33 is positioned lower than the uniform pressure cylinder outlet port 32'.
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