| 摘要 |
PURPOSE:To obtain a large calorific value, increase a turn-down ratio and reduce the noise of combustion, by a method wherein a wall body forming a combustion surface, on which discharging ports arranged with guides at both sides of secondary air supplying passages are formed, is extended upwardly from the end of one side of a flame port, ejecting mixture gas upwardly. CONSTITUTION:Mixture gas, ejected out of flame ports 5, is burnt to form flames on the flame ports 5 and high-temperature gas, including unburnt gas, rises along wall bodies 3, 4 while a secondary air for combustion is diffused from discharging ports 14 into the high-temperature gas to mix the air and burn the unburnt gas in the high-temperature gas whereby flames F are formed in a condition that they are adhered to the combustion surfaces 3a, 4a of the wall bodies 3, 4. The flames are formed only on the lower parts of the wall bodies 3, 4 upon low input and the upper end of the flames F rises in accordance with the increase of an input while the flames F are formed to the vicinity of the upper part of the wall bodies upon high input. Guides 11, projected toward the side of combustion space, are provided on the wall bodies 3, 4 in a condition that they are arranged along the whole length of left and right sides of the fuel ejecting port 14. According to this constitution, ejected mixture gas and secondary air are regulated and the combustion noise can may be further reduced.
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