A, axial flow fan

Leaf blade axial flow fan drive air with same axis direction of flow. The impeller axial flow fan and the propeller is similar, it is at work, the vast majority of airflow direction parallel to the shaft along the axial direction, in other words. Axial flow fan when the entrance flow is 0 static pressure in the air of freedom, and its power consumption is the lowest, when running with the air back pressure rising power will increase. Axial flow fan is usually mounted on the cabinet of electrical equipment, sometimes also integrated in the motor, the axial flow fan is compact in structure, can save a lot of space, the installation is convenient, so it is widely applied.

Its characteristics: high flow rate, medium pressure

B, centrifugal fan

Centrifugal fan work, promote the air blade perpendicular to axis and direction (i.e. radial ) flow, inlet is along the axial direction, and the air outlet is perpendicular to the axis direction. In most cases, the use of axial flow fan can achieve cooling effect, however, sometimes if you need air rotating 90 degrees or more discharge wind, we must choose a centrifugal fan. Fan strictly speaking, it belongs to the centrifugal fan.

Its characteristics: limited flow rate, high pressure

C, mixed flow fan

Mixed flow fan is also called diagonal flow fan, at first sight, mixed flow fan and an axial flow fan is no different, in fact, the inlet flow fan is along the axis of the outlet, however, is along the axis and vertical axis of the diagonal direction. The fan as the blade and cover known conical, thus resulting in high wind pressure, in the same size and other comparable performance, compared with the axial flow fan, low noise centrifugal fan.

Its characteristics: high pressure flow rate and relatively high

D, cross flow fan

The cross flow wind can produce a large area of the air, usually used for large surface cooling equipment. The fan inlet and outlet are perpendicular to the axis (right ). Cross flow fan is the use of a long cylindrical fan impeller is working, the cylindrical blade diameter are relatively large, because the large aperture, in order to guarantee the use of relatively low speed, based on which the whole air circulation, reduce the noise caused by the high speed operation.

Features: low flow rate, low pressure