Introduction to the functions and operating principles of DC fans
Release time:
2023/10/11
DC fans, for example, are a subcategory of cooling fans. Their advantages are that they are powered by DC, are smaller in size, are more energy-saving and efficient than other fans, and have low vibration, low noise, and longer service life, so they are widely used in daily life. Very extensive. So here is a brief introduction to the functions and operating principles of DC fans.
DC fans, for example, are a subcategory of cooling fans. Their advantages are that they are powered by DC, are smaller in size, are more energy-saving and efficient than other fans, and have low vibration, low noise, and longer service life, so they are widely used in daily life. Very extensive. So here is a brief introduction to the functions and operating principles of DC fans.
The operating principle of the DC fan: The DC cooling fan is composed of two parts: the stator and the rotor in the motor. The stator has magnetic poles (winding type or permanent magnet type), and the rotor has windings. After power is applied, a magnetic field (magnetic pole) is also formed on the rotor. There is an angle between the magnetic poles of the stator and the rotor. Under the mutual attraction of the stator and rotor magnetic fields (between N pole and S pole), the motor rotates. Changing the position of the brush can change the angle between the stator and rotor magnetic poles (assuming that the angle between the stator's magnetic poles is the starting side and the rotor's magnetic poles are on the other side. The direction from the rotor's magnetic poles to the stator's magnetic poles is the direction of rotation of the motor) direction, thereby changing the rotation direction of the motor.
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