| 摘要 |
PURPOSE:To prevent overheating of a device and overincrease of a room temperature through minimization of a heating quantity, by a method wherein a signal from a room temperature detecting means is used as control of a room temperature during normal operation, and is inputted to a room temperature deciding mean, deciding whether temperature is abnormal or not, during abnormal oppression. CONSTITUTION:By means of a room temperature detecting means, room temperature is inputted to a microcomputer through an A/D converter 19. A microcomputer 18 decides a heating output, responding to a difference between room temperature data from room temperature data from the room temperature detecting means 7 and a room temperature set temperature, with the aid of a heating output deciding means 14 to output the result to a built-in combustion quantity control means 15 through a D/A converter 20. When a device is overheated or a room temperature is abnormally increased, the microcomputer receives a signal from a room temperature detecting means 7, and when a room temperature exceeds a given temperature set at the interior of a room temperature deciding means 16, a signal from the room temperature deciding means 16 is inputted to the microcomputer 18. Combustion quantity is limited by means of a built-in heating output limit means 17, a signal is outputted to a combustion quantity limit means 15. As a result, a heating output is decreased to prevent overheating of a device and an abnormal increase of a room temperature. |
