| 摘要 |
PURPOSE: A combustion device is provided to always save the power consumption of a battery compared with a case for determining whether or not the level of a flame detection signal with a thermocouple deviates from a flame detection range from the time when the flame of a burner is extinguished until a predetermined time passes. CONSTITUTION: A combustion device includes a thermocouple failure detecting unit(53). If the flame detection signal(Vtc) of a thermocouple(20) is lower than an ignition level within a range from a microcomputer(50) is initiated by power supplied from a battery(10) until the flame of a burner(2) is extinguished, the thermocouple failure detecting unit releases the conductive state of a transistor(11) by a power supply maintaining unit(51) when the flame of the burner is extinguished in order to block the transistor. If the flame detection signal of the thermocouple is not lower than the ignition level, the thermocouple failure detecting unit detects the failure of the thermocouple in order to determine whether or not the flame detection signal of the thermocouple becomes lower than the ignition level from the time when the flame of the burner is extinguished until a predetermined time passes after the flame of the burner is extinguished, and then turns the transistor off. [Reference numerals] (21) TC amplifier; (51) Power supply maintaining unit; (52) Combustion operating unit; (53) Thermocouple failure detecting unit; (54) Thermocouple failure notifying unit; (55) Memory; |
