| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil burning boiler for three-position combustion control with flames prevented from contacting a combustion chamber wall face. SOLUTION: A three-position combustion control oil burner 1 provided at the upper part of an approximately cylindrical combustion chamber 6 for generating flames 9 in the combustion chamber 6 has a low combustion nozzle 4 and a high combustion nozzle 5 arranged near a burner center axis 8 for spraying a fuel divergently toward the combustion chamber and a combustion air exhaust nozzle 11 provided at the peripheral edge for spraying combustion air into the combustion chamber. During low combustion, the fuel sprayed from the low combustion nozzle 4 is mixed with the combustion air for combustion, and during high combustion, the fuel sprayed from both the low combustion nozzle 4 and the high combustion nozzle 5 is mixed with the combustion air for combustion. The high combustion nozzle 5 and the low combustion nozzle 4 are arranged in such a manner that the low combustion nozzle 4 is located closer to the combustion chamber center axis 7 than the high combustion nozzle 5. COPYRIGHT: (C)2004,JPO
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