| 摘要 |
PURPOSE:To increase an efficiency of radiation and to provide an infrared heating effect having a better bodily feeing and making a fast heating characteristic by a method wherein a combustion surface is arranged on a diameteral part of heat permeable body and the heat permeable body is divided into a pre-mixing chamber and a discharging chamber. CONSTITUTION:Liquid fuel is evaporated in a carburettor 3 under an electric heating and mixed with air emitted from a blower 4, resulting in producing the premixing gas. The premixed gas is passed through the premixing gas passage 5 and is supplied to a premixing chamber 7 of a cylindrical thermal transparent body 6. The premixng chamber 7 is made of heat permeable material, e.g. glass, mica, etc. and in particular the material having a high rate of heat permeatoin with a wave length of infrared region is preferably. A rectangle combustion body 9 having several burning holes 8 is arranged at a downstream of the premixing chamber 7. The discharged gas from the burning body 9 is flowed in the discharging chamber 10 and this relatively hot discharged gas heats the heat permeable body 6 to a hot temperature. Since the discharging chamber 10 and the premixing chamber 7 are made integral to each other, the discharged heat may heat the entire circumference of the thermal transparent body 6 under a thermal conduction so as to increase the secondary radiation. |
