Air control damper of building ventilation duct and air control system

摘要

The present invention provides an air volume control damper for connecting a duct. The air volume control damper for connecting the duct may include: a damper body having a square tube-shaped hollow connected between the square tube-shaped ducts; And an air volume control unit that is rotatably disposed in the hollow of the damper body and variably adjusts a flow rate of air flowing through the hollow. In addition, the present invention also provides an air volume control system.