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What are the roles of fan blades in DC fans
Release time:
2019-11-04
DC FanAfter DC voltage and electromagnetic induction, electric energy is converted into machinery to drive the fan blades to rotate, so the fan housing and blades are an essential whole. Most people know that these two parts are very important, so there areWhat kind of role?
First, the blade curvature: DC fan within a certain range, the greater the blade curvature, the greater the gas kinetic energy at the same speed, that is, the greater the air volume and wind pressure; at the same time, the greater the resistance of the blade, the greater the torque of the motor.
Second, the motor diameter: due to the existence of the motor and bearings, the central part of the DC fan spindle must inevitably have no blind area where the air flow passes through, and the spindle diameter determines the size of this blind area. The huge details of the spindle diameter mainly depend on the electric fanThe power of the machine-a high-power motor requires a larger stator winding coil, which must occupy more space. If it cannot be expanded vertically (adding height), it has to be expanded horizontally (increasing the area).
Third, blade radian:DC fan bladeIn addition to having a certain curvature on the cross-section, it does not extend vertically along the radial direction in the top view plane, but slightly twists and turns towards the direction of rotation, showing a certain arc. If the blades extend vertically in the radial direction, the airflow driven by the rotation of the DC cooling fan will be scattered on the side of the air outlet, the air supply interval is short, and the "strength" is not concentrated; If the current product version is slightly radian, it can be ensured that the air flow is concentrated in the columnar space directly in front of the air outlet, addingSupply air interval and wind pressure.
Fourth, blade spacing: The spacing between the blades is too small, which will cause airflow disturbance, add friction on the blade surface, and reduce the efficiency of the electric fan; the spacing between the blades is too large, which will lead to increased pressure loss and lack of wind pressure.
The above is the sharing of knowledge about the role of fan blades in DC fans. Shenzhen Jiangshanlai Electronic Technology Co., Ltd. is a large-scale enterprise specializing in the customization, research and development, manufacturing, sales and service of DC brushless motors, DC cooling fans, DC brushless fans, DC bracket fans, pressurized cooling fans, micro cooling fans, DC blowers, and non-standard fans, DC fan wholesale manufacturers and DC fan suppliers. Products sell well in Guangdong, Shenzhen, Guangzhou, Dongguan, Fujian, Zhejiang, Jiangsu and other places.
If there is a need, you can consult us.
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