| 摘要 |
A burner including a burner main body having a mixing pipe to which a fuel gas and combustion air are supplied and a mixing chamber provided at a top end on the downstream side of the mixing pipe, and a burner head, which is provided at an upper part of the burner main body. The burner head communicates with the mixing chamber and ejects the mixed gas of the fuel gas and air mixed in the mixing chamber. The burner head has a cylindrical shape and is provided right above the mixing chamber of the burner main body. The burner head has several first and second burner ports bored around almost an entire periphery of a side face thereof. The mixing pipe extends in a direction where the mixing pipe is crossed with an axis line of the burner head at substantially right angles to each other.
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