Axial flow fan
The blades of the axial fan drive the air to flow in the same direction as the shaft. The impeller and propeller of the axial fan are a bit similar, and in the work, most of the airflow flows in parallel with the axis, in other words, along the axis. The axial flow fan is the lowest power consumption when the inlet flow is 0 static free air, and the power dissipation will increase as the air flow counterpressure increases. Axial flow fan is usually served on electrical equipment cabinets, sometimes integration on the motor, because of the axial flow fan is compact structure, can save a lot of space, easy installation at the same time, so widely used.
Characteristics: high flow rate, medium wind pressure
Centrifugal fan
When the centrifugal fan works, the blade pushes the air to flow in the direction perpendicular to the axis (i.e., radial) and the inlet is along the axis of the axis, while the outlet is perpendicular to the axis direction. In most cases, the use of axial flow fan can achieve cooling effect, however, sometimes you rotate it 90 degree if need air discharge or need larger wind pressure, you must choose a centrifugal fan. The fan is technically also a centrifugal fan.
Its characteristics: finite flow rate, high wind pressure
Mixed flow fan
Mixed flow fan is also called the diagonal flow fan, the first look, mixed flow fans and axial flow fan is no different, in fact, mixed flow fan inlet is along the axis, but outgassing is along the diagonal direction of the axis and vertical axis. The fan, due to the conical shape of the blades and the outer cover, makes the wind pressure higher, and the centrifugal fan is less noisy than the axial fan in the same size and other comparable performance.
Its characteristics: high flow rate and relatively high wind pressure
Through-flow fan
The open air flow has a large amount of air, usually used to cool the large surface of the equipment. The wind
The inlet and outlet of the fan are both perpendicular to the axis (e.g., right). Tubular fan is to use a longer barrel shaped fan impeller, the round barrel the calibre of the blades are great, because of big diameter, to guarantee the overall on the basis of air circulation using low speed, thereby, reduce the noise caused by the high-speed operation.
Characteristics: low current rate, low wind pressure