| 摘要 |
PURPOSE:To be able to reduce the generation of irritating odor by keeping the temp. of a fuel atomization nozzle at a lower level and improving fuel cutoff at the time of fire extinction by installing a plurality of air holes at the periphery of an inlet hole for an atomization stream installed at the side of an auxiliary burning cylinder. CONSTITUTION:Fuel vapor vaporized by receiving the radiation heat from flames 20 is mixed with revolved air and the mixture rises up in revolving inside and auxiliary burning cylinder 6 and continues burning. At that time, a part of the flames 20 or burning gas with a high temp. collides with the wall of an inner drum 2 to descend and are going to flow into the cylinder 6 from recirculation holes 6a or an atomization stream inlet hole 9. However, as a plurality of air holes 9a are installed at the periphery of the hole 9, a part of flames 20 or burning gas with a high temp. flows into the cylinder 6 by using the holes 9a to reduce the amount flowing from the hole 9. Therefore, a part of the flames 20 etc. does not reach atomized fuel 8 and oil drop let burning wherein the fuel 8 burns directly does not take place and hence, the atomized fuel 8 is sufficiently vaporized.
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