| 摘要 |
PURPOSE:To control finely with the sense near to human sense by stopping the operation when the smoke, malodor or organic gas in the air is cleaned in automatic operation and driving a fan motor according to the degree of pollution in the room when the air is not cleaned. CONSTITUTION:An odor sensor 27 detects the malodor gas in the room, and a means 10 carries out the aging of the sensor 27 for a specified period after the electric power is supplied. A means 11 measures the concentration of the malodor gas detected by the sensor 27 to determined the degree of the pollution of air, and the measured value is displayed by displaying parts 16, 17, 8. And, the measured value is temporarily stored in a means 12, and a means 13 measures the concentration of the malodor gas after a specified lapse of time, and decides how to operate after this by the changed value. Means 14, 15 decide the number of revolution of the fan motor 4 by the above-mentioned measured value to control the electric current to the motor 4. As a result, the fine control near to the human sense is carried out with the small operational loss. |
