| 摘要 |
PURPOSE:To prevent the accumulation of a large amount of tar on a vaporization surface of a vaporization cylinder and to obtain a stabilized combustion condition for a prolonged period of time by a method wherein the vaporization surface is formed of a metallic oxide film containing alkali and the temperature of the vaporization surface is made higher than the film boiling region temperature of a liquid fuel. CONSTITUTION:A vaporization cylinder 8 is heated by a preheating sheath heater 9. When the temperature of the vaporization cylinder 8 rises higher than the film boiling temperature of the liquid fuel, a motor 4 is started and a cone 5, a shake-off plate 6 and an agitating vane 7 rotate. Further, simultaneously with the initiation of ventilation, a fuel pump operates to supply the liquid fuel over the cone 5 through a supply pipe 14 so that the liquid fuel becomes fine particle oil drops as it runs against the shake-off plate 6 and the agitating vane 7 and scatters over the vaporization surface 15. Therefore, the fine particle oil drops vaporize to become a vaporised fuel. In this case, primary air is supplied into the vaporization cylinder 2 where the air is mixed with the vaporized fuel and the mixture passes through a burner head 12 to make a combustion flame 13. In addition, the vaporization surface 15 of the vaporization cylinder 8 is formed of the metallic oxide film containing alkali and the temperature of the vaporization surface 15 is made higher than the film boiling temperature of the liquid fuel to thereby vaporize the liquid fuel. As a consequence, the weight of tar generating on the vaporization surface becomes small. |
