| 摘要 |
PURPOSE:To obtain good burning condition over wide range of a burner of gun type, by supplying the air for combustion to the space between both inner and outer sleeves and the inside of an inner sleeve, swirling the air in the inner sleeve by a swirler provided to the downstream of a nozzle, and by controlling the rate of feeding fuel and the rate of air interconnectingly. CONSTITUTION:The fuel oil pressurized by a solenoid operated nozzle 14 is injected from a return nozzle 15 by the intermediary of a nozzle adaptor 16, at the time of combustion. At this time, the rate of combustion is controlled such that the temperature of water in a hot water boiler is detected, and then, the opening of a valve of proportional control valve 17 in a return pipe 21 is controlled. On the other hand, the air for combustion is generated by the rotation of a fan 3 operated by a motor 2, and is blown into the space between an inner and an outer slerves 10 and 12 and the inside of an inner sleeve 10, via an air channel 1, which is divided into two air channels 5 and 6 by a bulkhead 4. At this time, dampers 7 and 8 to each air channel 5 and 6 are opened and closed interlockingly with the above-mentioned solenoid operated valve 17. At the top end of the above-mentioned inner sleeve 10, a rotary swirler 24 is provided to the side of downstream to a nozzle 15. |
