| 摘要 |
PURPOSE:To automatically perform ventilation, by operating a ventilator by feeding a ventilating signal from a combustion apparatus when the contamination in air reaches a predetermined ventilating level. CONSTITUTION:When a combustion in taken place in a combustion apparatus 1, the contamination of air in a room is detected by a gas sensor 14 and the rise in gas concentration, and is detected by a flame sensor 15 as the decrease in oxygen concentration. A microcomputer 11 compares the detected level being fed from the sensor 14 with the ventilating level, and when the gas concentration has come up to the ventilating level, an ON signal is output to an electric power line 10 from a transmission circuit 16, as well as to energize a circuit 13 to sound an alarm. In a receiving and controlling device 4, a signal is received to be judged by a receiving circuit 18, and the power source circuit of a receptacle 7 is closed by a controlling circuit 19 operate a ventilating fan 5. The microcomputer 11 also compares the detected level being fed by the sensor 15 with the ventilating level, and the device 4 starts operating a ventilating fan 5, as well as to sound an alarm by closing the circuit 13 when the oxygen concentration decreases down to the ventilating level. With such an arrangement ventilation in a room can be performed automatically according to contamination in air to enable continuous operation of a combustion apparatus.
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