When the cooling fan is working, it mainly converts electrical energy into mechanical energy. The main principle is: when the cooling fan is powered, current passes through the fan coil. According to Ampere's right-hand rule, we know that a magnetic field will be generated around the coil, and a rubber magnet pre-charged with magnetism is attached to the inside of the cooling fan blade. The magnetic field generated by the conductor generates a repulsive force with the fixed magnetic field. When the repulsive force is greater than the static friction of the fan (the friction of the fan bearing, the wind resistance of the fan blade rotation), the fan blade rotates naturally. The DC fan power supply voltage is fixed, and a Hall sensor component must be used as a synchronous detection device to control a set of circuits so that the circuit can make the two sets of coils wrapped around the axis work in turn to generate different magnetic fields.

      Through the working principle of the fan, we know that the main determining factors of the fan speed are the fan structure and components, bearing friction, and wind resistance caused by the inclination of the fan blades, etc., and of course there are external factors. Let's analyze it below: The cooling fan achieves heat dissipation through air cooling. The factors that affect air cooling are mainly the environmental structure of the cooling system. When the system environment is relatively sealed, the fan's wind pressure must be considered when selecting a cooling fan. If the fan pressure is not enough, the fan speed will be significantly affected, and then the air volume will drop significantly, and the heat dissipation effect will not be achieved. Therefore, external wind pressure is a factor that affects the fan speed (supercharged cooling fans can overcome this). Another obvious factor is the external environment, such as wind and sand, grease, high and low temperatures, etc. If ordinary cooling fans are not protected, the harsh environment will also have a significant impact on their speed.

      Shenzhen Huaxinrong Plastic Electronics Co., Ltd. (a subsidiary of Dongweifeng) was established in 2008. It mainly produces and develops a series of products such as AC and DC cooling fans and DC motors. In today's rapidly changing modern technology, all colleagues of Dongweifeng will continue to dedicate high-quality products and services to our customers, and strive to become an indispensable partner for every customer to achieve success.

        Shenzhen Dongweifeng Electronic Technology Co., Ltd. was established in 1991. It is a national high-tech enterprise. It has now developed into a professional supplier of cooling solutions and products for computers, electronics, etc. The company has successfully passed ISO9001:2000 quality system certification, ISO14001:2004 environmental system certification and UL. TUV. CE product certification. As a national key high-tech enterprise focusing on R&D, manufacturing and sales, it has formed three pillar industries: computer electronic radiators, cooling fans; LED lighting, outdoor landscape lighting engineering lighting; and architectural decorative panels.