| 摘要 |
PURPOSE:To maintain a normal combustion state of a burner, by installing a weight sensor which measures the weight of a fuel tank, calculating an actual quantity of combustion of said burner, and carrying out feedback control about either a fuel control section or a combustion air control section. CONSTITUTION:Signals from a weight sensor 9 which is installed to the bottom of a fuel tank 2 to measure the weight of the fuel tank are output to a combustion quantity calculation section 11 after the quantity of fuel is calculated from the weight in a fuel measurement section 10. The combustion quantity calculation section 11 calculates the quantity of combustion of a burner 1 from the quantity of fuel which is reduced during reference time of a timer 12, and inputs the calculated data into a combustion quantity comparison section 34. A setting comparison section 38 calculates the quantity of air required for the decided quantity of combustion, decides the rotary speed of a combustion fan motor 5 and drives the motor. The drive frequency of a fuel pup 3 is also decided so as to drive. After that when an actual combustion quantity of a burner is output from the combustion quantity calculation section 11, the combustion quantity comparison section 34 compares the output with the quantity of combustion obtained in the setting comparison section 38, and corrects the drive frequency of the pump drive section 40, if they are different from each other, and operates so that a normal combustion of quantity may be returned. |
