| 摘要 |
Provided is a premixing burner having double fire ports capable of conducting stable combustion regardless of an amount of input of combustible gas. The premixing burner having double fire ports which previously mixes and bums a gas and air is configured so that a plurality of plates, each of which is partly cut out, overlap to form a burner body, so that the plurality of plates are disposed so that cut portions are crossed between the neighboring plates so as to form a flow path of mixed gas and the plurality of fire ports, and so that the fire ports are configured so that the fire ports, each of which has a relatively small cross section through which the mixed gas flows based on a flowing direction of the mixed gas, are serially connected to the fire ports, each of which has a relatively large cross section.
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