| 摘要 |
PURPOSE:To increase the load of a combustion chamber and to improve the combustion stability by disposing high-concentrating gas ejecting ports and low-concentration gas ejecting ports adjacently to each other, and specifying the relationship between the outlet-inlet area of each burner port and quantities of feeding a mixed gas and a secondary fuel, in the gas burner in which a large number of burner ports are connected to a distribution chamber. CONSTITUTION:A fuel gas is supplied to the inner side of a vane 4a through a fuel gas supplying nozzle 6 to form air and fuel mixed gas which is supplied to burner ports 2 and 3 by means of the vane 4a. A secondary fuel gas is ejected through small holes 8 of fuel gas supply paths 7 to increase the fuel concentration of the burner ports 2. further, the inlet area S1 of each burner port 2 for the high-concentration mixed gas is set larger than the outlet area S2 thereof, and the inlet area S1 of each burner port 3 is set equal to the outlet area S4 thereof and also equal to the inlet area S1 of the burner port 2. Further, a predetermined relationship formula is satisfied between a mixed gas supply quantity Q1 and a secondary fuel supply quantity Q2, and the ejection velocity at the burner port is set smaller than that at the burner port 3. Thus, it is possible to increase the load of a combustion chamber and to stabilize the combustion.
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