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US 2018/0003379 A1Published application
Combustion apparatus
AssigneeRinnai Corporation
InventorShingo Tsuge
Life of this patent
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Abstract
The present invention provides a combustion apparatus capable of obtaining a smaller heating value than usual and capable of reducing the amount of a mixed gas without causing a change in the mixture ratio of air and a fuel gas. A shutter member 4 is provided, which narrows the flow passage of a gate section 25 of a duct 23 when a mixed gas, which is produced by mixing air and a fuel gas, is forcibly sent from the duct 23 to a distribution chamber 12 by a fan 2.
Claims3
A combustion apparatus comprising:
- a gas burner;
- and
- a premixing device which forcibly sends a mixed gas generated by mixing a fuel gas with air to the gas burner,
- wherein the gas burner includes a plurality of flame holes and a distribution chamber in which a mixed gas directed toward the flame holes is evenly distributed, and
- the premixing device includes;
- a fan;
- an air intake passage which takes in air drawn in by the fan;
- a fuel gas supply passage through which a fuel gas at an atmospheric pressure is supplied to the air intake passage;
- a mixed gas flow passage through which a mixed gas produced by mixing air and the fuel gas and sent out by the fan to a downstream, is introduced into the distribution chamber;
- and a flow passage reducing device which changes a flow passage area of the mixed gas flow passage in a reducing direction.
7 more elements
Dependencies are inferred from the claim text.