Flow control ventilation fan in accordance with the load variation

摘要

The present invention relates to a ventilator which can be automatically controlled according to an external environment in which the ventilator is used as an internal air circulation device in industrial environment and living environment. A drive motor can be adaptively controlled even when load-inertia changes according to an introduced air flux of an air discharge system, and also various physical load variables generated during discharge of air can be applied in real time so that the drive motor rotating a fan of the ventilator can be optimally controlled without respect to an external factor. The ventilator of the present invention comprises: a frame; a drive motor; a first blade; a second blade; a detection module; and a control module.