| 摘要 |
PROBLEM TO BE SOLVED: To develop a combustion device, equalized in flame distribution, without damaging advantage where an overall height is low and the number of parts is small. SOLUTION: The combustion device has a burner port base 36, and the upper surface side is functioned as a fuel gas flow passage constitution surface. In the combustion device 1, a fuel gas flow passage 48b situated in a position near a vaporization part 8 is narrow in the section area of a flow passage 48b and the fuel gas flow passage 48b situated in a far position is wide in a section area. Thereby, the fuel gas flow passage 48b situated in a near position is low in a pressure loss, while extending to a gas introduction opening 185, but, a pressure loss when it flows through the fuel gas flow passage 48b is high. Thereby, a difference in a pressure loss during the passage to extend to the burner port is offset and fuel gas is uniformly injected from either burner port.
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