Exhaust fan, is driven by the motor blade rotation drive airflow, so that indoor and outdoor air exchange a kind of air conditioning appliances, also known as ventilation fan. Exhaust purpose is to remove indoor dirty air, adjust the temperature, humidity, widely used in families and public places. Exhaust fans, also known as negative pressure fans, negative pressure fans, etc., can use air convection to make the indoor has been in a state of negative pressure, forming a suction, continuously inhale the outdoor air, and discharge the stuffy indoor air, so as to achieve the effect of ventilation, ventilation and cooling.
According to the inlet and exhaust ports
Exhaust fan according to the inlet and outlet is divided into partition type (both sides of the partition hole are free space, from one side of the partition wall to the other side of the air), pipe exhaust type (one side from the free space air intake, The other side is vented through the catheter), the catheter intake type (one side is vented through the catheter, and the other side is vented to the free space), the full catheter type (the catheter is placed on both sides of the exhaust fan, and the air is vented through the catheter). According to the form of air flow, it can be divided into centrifugal type (air enters in the direction parallel to the rotation axis and is discharged perpendicular to the axis), axial type (air enters in the direction parallel to the rotation axis and is discharged in the direction parallel to the axis) and cross-flow type (air enters and exits perpendicular to the direction of the axis).
According to the way of air change
Exhaust fan ventilation mode has discharge type, inhalation type, and three types. The discharge type enters the air from the natural air inlet and exhausts the dirty air through the exhaust fan; The suction type inhales fresh air through the ventilation fan, and exhausts dirty air from the natural exhaust port; In combination, the suction and exhaust are completed by a ventilator.
The characteristics of description
Exhaust fans have the characteristics of low investment cost, large air volume, low noise, small energy consumption, stable operation, long life and high efficiency. The SHUTters can be automatically opened and closed so as to achieve dust-proof and WATER-proof effect, and the appearance is beautiful and generous, which is the best choice for modern workshop cooling and ventilation. The exhaust fan with the characteristics of environmental protection and energy saving will become the mainstream of ventilation and cooling equipment market.
