| 摘要 |
PURPOSE:To effectively use oil within a tank so as to burn a combustion tool as long as possible by a procedure in which a microcomputer discriminate existence or non-existence of combustion and only the time when combustion exists is calculated to estimate supply oil beforehand. CONSTITUTION:A microcomputer 14a which forms a main body of a control circuit 15a continues driving when a float switch 10 is ON. When the float switch 10 is OFF, the microcomputer 14a discriminates whether the power source switch is ON or not, and when the swtich is ON, an oil supply lamp 23a is lit. When a room temperature thermistor 22 is OFF, the calculation of the oil supply time is stopped, and the oil supply time only when the thermistor 22 is ON is calculated. When the oil supply time reaches a predetermined time T, the driving is stopped. That is, when the total of the burning times t1, t2, t3 and t4 reaches the predetermined time, the driving is stopped. Oil within the tank 3 is located in a point C and is not located between point B and point C. When the float switch is OFF, even if the power source switch is turned OFF and the switch is again turned ON, the driving is stopped. |
