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Combustion apparatus

A technology of combustion device and gas burner, which is applied in the directions of burner, combustion method, combustion type, etc., can solve the problems of unstable air and gas ratio, insufficient combustion of gas burner, etc., and achieve the effect of reducing the amount

Active Publication Date: 2018-01-05
RINNAI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that when the gas burner is burned with a lower than normal calorific value, the ratio of air and gas in the generated mixed gas is unstable, and the combustion of the gas burner is insufficient.

Method used

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  • Combustion apparatus
  • Combustion apparatus
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Embodiment Construction

[0028] Embodiments of the present invention will be described with reference to the drawings. The combustion device of the present embodiment is installed in a water heater not shown.

[0029] like figure 1 As shown, the combustion device includes a gas burner 1, a fan 2, and a gas supply pipe 3 as a gas supply passage. The fan 2 and the gas supply pipe 3 constitute the premixing device of the present invention.

[0030] The gas burner 1 is provided so that a plurality of flame holes (not shown) open downward, whereby flames are formed on the lower surface of the gas burner 1 .

[0031] A heat exchanger 11 is connected to the lower portion of the gas burner 1 . The heat exchanger 11 includes meandering water pipes and fins (not shown) inside. The gas burner 1 heats the water passing through the water pipe of the heat exchanger 11 .

[0032] A distribution chamber 12 is connected to the upper portion of the gas burner 1 . One side of the distribution chamber 12 is connect...

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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 mixtureratio 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.

Description

technical field [0001] The present invention relates to a combustion device provided with a premixing device for forcibly feeding mixed gas generated by mixing gas into air to a gas burner. Background technique [0002] Generally, the premixing device installed in the combustion device is configured in such a way that air and gas are mixed at a predetermined ratio to generate a mixed gas, and at the same time, the mixed gas is forcibly sent to the gas burner by a fan. [0003] Conventionally, as this type of premixing device, the following premixing device is known: a disc valve is provided at the air introduction part on the upstream side of the fan, and a gas passage for injecting gas is connected downstream of the disc valve to generate a mixed gas ( Refer to Patent Document 1). [0004] The disc valve increases or decreases the suction resistance by adjusting the degree of closure of the air introduction portion, thereby increasing or decreasing the amount of passing ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/04F23D14/62
CPCF23D14/02F23D14/36F23D14/60F23N1/027F23N2233/08F23D14/70F24H9/1836F23D14/22
Inventor 柘植真吾
Owner RINNAI CORP