Major manufacturers have gradually switched the electric fan's motor to a DC motor to address the noise issue that arises during the operation of conventional AC fans. DC fans allow the fan to continually change speeds while also saving energy. The electric fan is capable of remaining silent even in the middle of the night. The majority of DC fans have high-efficiency permanent magnet drive shafts, which, once turned on, use the electromagnetic effect principle to drive the fan blades, significantly lowering the friction-kinetic energy consumption. As a result, the DC fan emits extremely little noise, uses just one-third of the power of conventional AC fans, and has more sections for adjusting the air volume.
There are more and more DC fans in the market now, but considering price and cost, traditional AC fans still have strong competitiveness in the market. Due to the stable air volume, strengthening air convection has a good effect. Suitable for spacious and easily stuffy places such as kitchens and living rooms. The number of blades in traditional AC fans is generally only 3-5, and the adjustable air volume is not as large as that of DC fans, with most fans having only 2-3 blades. Therefore, it is impossible to operate at low speeds, and there is also a high level of wind cutting noise when the fan blades start. This is a reality that traditional AC fans cannot change.
Compared with traditional AC fans, DC fans use DC variable frequency motors, which not only consume very low power, but also have very low wind cutting sound and motor running sound, making them very suitable for use in quiet home sleep environments.
