PURPOSE: To get positively a desired most appropriate calorie, keep and maintain a stable combustion by a method wherein a desired temperature of a room to be heated and a surrounding air temperature around the room to be heated are compared and an amount of fed solid fuel to a combustion furnace is varied in response to the value of the difference in temperature.
CONSTITUTION: A temperature to be held by a room 4 to be heated is set at a desired temperature part 5, and a difference between the set temperature and an output of a surrounding air temperature sensor 7 corresponding to a surrounding air temperature is sensed by a comparison sensor part 4. A difference in temperature is taken out as a variation in time by a voltage time conversion part 9, set as an input for a feeding control part 3 so as to control a feeding interval of the solid fuel is continuously controlled. The voltage time conversion part 9 takes out an output from the comparison sensing part 8, for example, as a variation in frequency by the voltage-frequency conversion part 10 and further it can be taken out through a counting part 11 as a variation in time. That is, when the difference in temperature is high, the fuel feeding interval is short and in turn when the difference in temperature is low, the fuel feeding interval is elongated.
| JP2003014229 | VALVE FOR GAS INSTRUMENT |
FURUISHI HARUHISA
HINO TETSUO
YASUDA MASAO
SATOU YOSHIO
