Ventilation fan working principle
Ventilator ventilation methods are discharged, inhaled, and used three. Discharge from the natural air intake into the air, through the ventilation fan to discharge dirty air; inhalation through the ventilation fan inhalation of fresh air, from the natural exhaust port discharge dirty air; and the use of the type of suction and exhaust are completed by the ventilation fan. Driven by the electric fan to drive the air flow, so that indoor and outdoor air exchange of a class of air-conditioning appliances. Also known as ventilation fan. The purpose of ventilation is to remove the indoor dirty air, adjust the temperature, humidity and sensory effects. Ventilators are widely used in homes and public places.
The amount of ventilation and the number of ventilation needs different in different places. The amount of fresh air required for a person or per square meter is called the required ventilation. The number of times to replace fresh air within 1 hour is called the number of ventilation.
Ventilation fan structure
The louver type ventilation fan is the most widely used ventilation fan, mainly by the motor, fan, wind box, panel, blinds and dedicated cable switch and other ancillary components. Motors generally use single-phase capacitor running asynchronous motor. 150mm specifications of the following ventilation fans also use shaded pole motor. Fans are generally made of ABS, AS plastic injection molding, light weight and high strength. Wind box is usually made of thin steel plate stamping and spot welding, but also the use of plastic injection molding. Panel with plastic injection molding. Blinds are usually stamped with thin steel or tinplate.
Ventilator specifications, according to their fan diameter is divided into 100,150,200,250,300,350,400,450 and 500mm.