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The difference between the DC fan and the AC fan

Publish Time:2017-03-17

The working principle of the AC fan: driven by the AC power supply, the voltage will be positive and negative, and it does not rely on the circuit control to produce the magnetic field. The power frequency is fixed, the pole change speed of silicon steel sheet produced, is determined by the power frequency, the higher frequency magnetic field switching speed faster, faster speed theory. However, the frequency can not be too fast, too fast will cause difficulty in starting.

What is the difference between a DC fan and an AC fan?

Many people have been very concerned about this, and do not know where the real difference between the DC fan and the flow fan is. Then we first analyze it from the very important bearings of the fan.

Generally, the varieties used for dispersing the radiator are: three kinds of sleeve bearings, sliding friction and ball bearings, and two kinds of bearings. These years, many manufacturers have introduced a lot of new technology in bearings, such as magnetic bearings, bearings, magnetic bearings, wave riflebearing is also above the basic form of bearing improvement and operation principle did not change. The oil bearing and ball bearing are mainly used on the ordinary air cooled radiator. The double ball bearing is a high-end product with high precision, high quality and high price, which belongs to the three high product. The oil bearing can meet all kinds of working conditions, and its service life is very long, and the price is low, but the quality is relatively general.

The direct current fan and the AC fan are not the same on the working principle. A conductor produces a magnetic field through a current. If the conductor is placed in another magnetic field, it will produce a suction or repulsion, causing the object to move. Inside the fan leaf, the rubber magnet surrounds the silicon steel sheet, and the center part winds two sets of coils, and uses the Holzer induction module as a synchronous detection device to control a set of circuits, which makes the two sets of coils of the twining axis work alternately. The steel plates produce different magnetic poles, which produce the repulsion force with the rubber magnets. When the repulsion force is greater than the static friction of the fan, the fan leaves turn naturally. Because of the synchronous signal provided by the Holzer induction component, the fan leaf is able to continue to operate.

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