| 摘要 |
PURPOSE: To prevent a flame from becoming unstable in the operation at a 'weak' combustion under a low room temperature by providing a combustion value control means to correct the lower limit of the combustion value upward when a temperature detected by a room temperature detecting means is below a specified value. CONSTITUTION: A combustion means is formed in a combustion cylinder 9 so arranged that a fuel oil is vaporized in a vaporization cylinder 5 to be mixed with air, jetted out of a mesh 7 of a burner 6 at an upper part of the vaporization cylinder 5 and the mixed gas is ignited by an ignition electrode 8 to let a combustion flame encircle the burner 6. A combustion control means corrects the lower limit of a combustion value upward when a temperature detected by a room temperature detecting means is below a specified temperature predetermined. As a result, even the performance of an electromagnetic pump is lowered because of a low room temperature, the fuel oil is fed to the vaporization cylinder 5 at a level exceeding the minimum value enough to stabilize a flame. This enables the stabilization of the flame to prevent an accidental fire and also allows the preventing of increase in the generation of carbon monoxide and carbon dioxide with instability of the flame. |
