VENTILATOR WITH REVERSE WIND PREVENTION DAMPER MAGNET UTILIZING ELECTRONIC MAGNET

Disclosed is a ventilator with a damper magnet utilizing an electromagnet to prevent reversed airflow. The ventilator with the damper magnet utilizing the electromagnet to prevent reversed airflow comprises: a ventilator body (10) which includes a ventilation fan (18) embedded in an air flow chamber located therein and an air flow hole (12) formed at one side to communicate with the air flow chamber; a damper (30) of which upper end is connected to the air flow hole (12) of the ventilation body (10) via a hinge part (20) such that the damper is opened based on the hinge part (20) when the ventilation fan (18) is operated and closes the air flow hole (12) based on the hinge part (20) when the ventilation fan (18) stops; a magnetic substance (40) disposed on the damper (30); and an electromagnet (50) mounted on the ventilator body (10) in such a way as to be opposed to the magnetic substance (40) of the damper (30), such that the magnetic substance (40) is attached to maintain the damper (30) in a state where the damper (30) gets in contact with the air flow hole (12) when the damper (30) closes the air flow hole (12) of the ventilator body (10) and such that the damper (30) is opened at the air flow hole (12) of the ventilator body (10) by repulsive force between the magnetic substance (40) and a magnetic force to push the magnetic substance (40) generated by supply of external electricity.