| 摘要 |
<p>The present invention relates to a damper for discharging harmful gas to the outside in the industrial equipment or sucking the outer air to the inside. More specifically, the present invention relates to a damper capable of automatically controlling an air flow, in which a rotation range of a disc is detected by a sensor, and a controller controls an opening/closing degree of the disc to automatically accurately control the intake or outtake air flow, so that harmful gas is discharged to the outside or the outer air is sucked to the inside, thereby preventing safety accident caused by the harmful gas and thus maintain the indoor environment of a workplace comport. The damper includes a tubular housing to intake or outtake gas, and having a flange at one end; a motor installed to the outer surface of the housing; a disc rotatably installed in the inner space of the housing and rotated by a motor; a rotor installed to the outer side of the housing and rotated together with the disc; and a sensor holder installed to the outer surface of the housing and having a plurality of sensors for detecting a rotation range of the rotor.</p> |
