| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil burner using light oil or kerosene as fuel in which good combustion is ensured even under a low load where fuel and primary air supply is restricted while preventing adhesion of carbon or misfiring. SOLUTION: In the forward end plane of the oil burner, a first primary air injection opening 50, an annular fuel injection opening 70 surrounding the first primary air injection opening 50, and a second air injection opening 80 surrounding the fuel injection opening 70 are formed. Fuel injected annularly (tubularly) from the fuel injection opening 70 touches primary air flow injected from the first and second primary air injection opening 50, 80 on the inner and outer surfaces of the injected annular fuel. Consequently, it is sheared finely and atomized sufficiently.
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