| 摘要 |
<p>A variable air control system and a method thereof are provided to manage environment of a working field and to ensure safety of workers by displaying an amount of discharge air. A variable air control system comprises a discharge fan(110), a fume hood(120), an discharge duct(130), an individual hood controller(140), a central control unit(150), a normal hood(160), a normal hood controller(170), and a air feeding fan(180). The discharge fan discharges contaminated materials to an exterior. The fume hood safely discharges harmful gas to ensure pleasant working environment of a laboratory. The fume hood is provided at a front portion thereof with a sliding door(124). The discharge duct is connected to an inner space of the fume hood to discharge contaminated materials. A position sensor(123) is installed in the fume hood to measure an opening area according to the opening degree of the sliding door.</p> |
