Rotating fan blades driven by a motor driven air flow

Rotating fan blades driven by a motor driven air flow, so that a class of air of indoor and outdoor air exchange regulation appliances, also known as the ventilation fan. The purpose of ventilation is to remove polluted indoor air, adjust the temperature, humidity and sensory effects.Ventilator widely used in home and public places. Ventilator often used in the home, belonging to the family of essential goods, such as air ventilation fans, bath ventilation fans, bathroom ventilating fans and kitchen ventilation fans. Ventilator ventilation methods are discharge type, inhaled, and with three. Discharge type into the air from natural gas inlet through the fan discharge polluted air; inhaled through a ventilator breathe fresh air, polluted air exhaust vent from nature; and the formula is the intake and exhaust by the fan to complete.