| 摘要 |
This invention relates to a combustion device used for the oil fan-heater or the like and intends to improve vaporization and combustion performances while lowering the NOx concentration and widening a variable range for combustion. This combustion device is in such a structure that a burner head (3) is fixed to a vaporizing cylinder (1) to vaporize liquid fuel, said burner head (3) is provided with minute burner holes at the upper part and slightly larger burner holes (6a < 6b < 6c) at the lower part thereof, and a perforated sheet such as a wire net (7) is tightly fixed to the outer periphery of said burner head (3). Thus, flames formed at said burner head (3) are small to reduce NOx concentration, the temperature of the upper part such as the wire net (7) can be kept at a low level even when combustion is on low, and flame stability is good because of the large lower flame holes, whereby a temperature of the vaporizing cylinder (1) susceptible to the influence of said flames can be maintained at a high level and favorable vaporization and combustion performances are ensured. |
