The wall-mounted exhaust fan has the characteristics of low investment cost, large air volume, low noise, low energy consumption, stable operation, long service life, and high efficiency. The blinds can be automatically opened and closed to achieve dustproof and waterproof effects, and the appearance is beautiful and elegant, making it the best choice for cooling and ventilation of modern factories. The wall-mounted exhaust fan with environmental protection and energy-saving features will become the mainstream of the ventilation and cooling equipment market.
Wall-mounted exhaust fan, the fan blade of which is rotated by a motor to drive airflow to exchange indoor and outdoor air is also known as the ventilation fan, whose purpose is to remove the dirty air inside the room and adjust the temperature, humidity, and sensation, are widely used in homes and public places. It is also a negative pressure fan. The use of air convection allows the room to be in a negative pressure state, forming a suction force, continuously inhaling the outdoor air, and discharging the indoor sultry air, thereby achieving the effect of ventilation and cooling.
Based on the differences of the intake and exhaust ports, wall mounted exhaust fan can be divided into four types: the partition type (the free space on both sides of the partition wall is ventilated from one side of the partition wall to the other side); the duct exhaust type (air enters from free space on one side, while the other side is exhausted through the duct); ducted air intake type (air is inducted through the duct on one side, and on the other side is vented into free space) and full duct type (the duct is placed on both sides of the exhaust fan, through which air enters and exits). Wall-mounted exhaust fan can also be divided into three types according to the differences in air flow mode: centrifugal type (air enters in a direction parallel to the axis of rotation, perpendicular to the direction of the shaft), axial flow (air enters in a direction parallel to the axis of rotation, still parallel to the axis) and cross-flow (The entry and exit of air are perpendicular to the direction of the shaft).
What’s more, there are three types of ventilation methods for the wall-mounted exhaust fan: discharge type, suction type, and the combined type. The discharge type enters the air from the natural air inlet, and discharges the dirty air through the exhaust fan; the suction type sucks the fresh air through the ventilation fan, and discharges the dirty air through the natural exhaust port; and the suction and exhaust are both performed by the ventilation fan in combined type.
There are many types of wall-mounted exhaust fan. We need to choose the most suitable ventilation and cooling equipment according to the air volume and static pressure, therefore it is suggested that you calculate the required power first, and it is best to leave room for 20-25%, considering the use of the motor for this purpose.