| 摘要 |
PURPOSE:To control the rate of ozone generation in a room at a proper level corresponding to the number of people in the room, by regulating the corona discharge in air by the voices, etc. of people in the room. CONSTITUTION:A high-voltage generation coil 3 is connected between the plate electrode 2 having perforations 2a and a plurality of discharge electrodes 1, and a series circuit composed of the electrical source 4 and an on-off switch 5 is connected to the intermediate tap of the coil 3. The microphone 7 generating a signal by detecting sound pressure is connected to the oscillator 6 and the on-off switch 5. When there is no one in the room and the detected output of the microphone 7 is low, the oscillator generates 1Hz AC signal, and when there are many people in the room, microphone 7 detects the voices of people and 20Hz AC signal is generated by the oscillator 6. The on-off switch 5 is actuated by the signal, and pulses are transmitted to the coil 3. A high voltage is generated between both ends of the coil according to the level of the oscillation frequency, the frequency of corona discharge varies 1-20 times by the absence or presence of people, and the rate of ozone generation in a room occupied people is increased 20 times compared with the generation rate in an empty room.
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