With the rapid development of science and technology, more and more industries have
Cooling fanThe demand is also increasing. For example, the power supply industry, frequency converter industry, aerospace industry, electrical appliance industry, communication industry, etc. are all inseparable from the cooling fan. The DC fan converts electric energy into machinery through DC voltage and electromagnetic induction to drive the rotation of the fan blades. Therefore, the fan housing and blades are an indispensable whole. Most people know that these two parts are very important, so what is the role between them?
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 great details of the spindle diameter mainly depend on the power of the electric fan motor-a high-power motor requires a larger stator winding coil, which must occupy more space. In the case of not being able to expand vertically (add height), it has to expand horizontally (Increase the area).
Third, blade radian: DC fan blades in addition to the section has a certain curvature, in the top plane is not along the radial vertical extension, but towards the direction of rotation slightly zigzag, a certain radian. If the blades extend vertically along 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, and the air supply interval and air pressure are added.
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 of DC cooling fan. 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.
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