| 摘要 |
PURPOSE:To obtain an easy and positive control based on a wide-ranged adjustment of fuel supply by a method wherein the supply of kerosene fed by a constantly operating pump is performed by opening a solenoid valve due to the voltage based on the ON-time period of a pulse signal. CONSTITUTION:Kerosene is made to drop down on a distributor 22 which rotates 2,500 times per minute. Then air is blown into the kerosene so as to atomize and gasify it into mixed gas. The mixed gas is injected into a combustion chamber 14 and ignited by a ceramic heater 43 to begin combustion. The kerosene in an inside space 21 of a red-heated heating bowl 20 is gasified so actively that it burns with a blue flame. Hot air produced is supplied from a hot air supplying chamber to a flow-down type drying chamber, where grains are dried thereby. In order to diminish the blue flame, the kerosene supply rate to the distributor is decreased. In this instance, according to this invention, a certain amount of kerosene is pumped up constantly by a driven electromagnetic pump 25 and then subjected to an adjustment made by opening a solenoid valve 24 due to the voltage based on the ON-time period of the pulse signal. |
