| 摘要 |
PURPOSE:To suck the predetermined amount of air which corresponds to the amount of air discharged together with the vapor of organic solvent, by a method wherein a sensor which detects the pressure of air is provided on the way of flow passageways of the vapor of organic solvent and air and signals from the sensors are received to control an air suction device. CONSTITUTION:When the vapor of organic solvent, which is evaporated in a working place 1, is discharged by the operation of an exhausting fan 3 from an exhausting port 12, signals for promoting the operation of a suction fan 9 is transmitted by a sensor 4, which detects the pressure of the vapor, to a control panel 6 through lead wires 5-a, 5-2. When the control panel 6 receives the signals, the panel 6 operates the suction fan 9. Dust afloated by the operation of the suction fan 9 is removed by a filter 8, thereafter, the necessary amount of clean air is supplied to the working place 1 through the passageway 10 and the suction port 11. Accordingly, the safety and sanitariness of men as well as the improvement in the quality of products may be attained by proper exhaust and suction.
|
