What is the axial flow fan and its air supply form

This classification method is based on the direction of the blade driving air and the direction of the shaft. The cooling fan can be divided into axial flow fan, centrifugal fan (the inlet air is along the axis and the exhaust air is perpendicular to the axis), cross flow fan (the inlet air and outlet air of the fan are perpendicular to the axis) and mixed flow fan (the inlet air of the mixed flow fan is along the axis, but the inclined air and vertical axis).

Air supply form of axial flow fan/fan. The common form is to use a fan/axial blower for the blower. The reason why it is so popular is that it has good comprehensive effect and low cost. In addition, it seems more and more common to change the direction of axial flow fan into upward thrust.

The difference between the two air supply modes lies in the different forms of air flow. Turbulence will occur when blowing, and the wind pressure is high, but the resistance loss is easy to bear; Laminar flow is generated in the process of air extraction, and the air pressure is low, but the air flow is stable. Theoretically, the heat transfer efficiency of turbulence is much higher than that of laminar flow, so it has become the main design form. However, in some radiator designs (such as too tight ribs), the radiator will significantly block the airflow, and ventilation can produce better results.

Generally speaking, when the heat in the device is relatively dispersed and evenly distributed, and the wind resistance of the cooling surface is relatively small, exhaust cooling is usually used; When the heat distribution in the device is uneven, the wind resistance is large, and there are many parts, air cooling is usually used. If necessary, fans can be used in series (increase air pressure), parallel (increase air volume) or parallel. Of course, we cannot generalize. You can consult our company to select the appropriate cooling fan for your equipment. Our company has more than ten engineers with more than ten years of R&D experience, who can help you choose cooling fans and provide appropriate cooling solutions.

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