The difference between DC centrifugal fan and AC fan

The difference between DC centrifugal fan and AC fan is mainly reflected in the working principle, power control, energy efficiency performance, noise level and application scenarios.

Working principle
DC centrifugal fan: It is driven by DC power supply, and the impeller is driven by the power of DC motor to rotate to achieve air intake and discharge. Its motor is usually an outer rotor brushless DC motor, which has the characteristics of high efficiency, long life and low power consumption.
AC fan: It is driven by AC power supply. The AC motor has a simple structure and is easy to manufacture. It is suitable for high speed, high voltage, high current and large capacity application scenarios..

Power control
DC centrifugal fan: Due to the use of DC motor, the speed and output power of the fan can be accurately controlled by adjusting the voltage or current, thereby achieving more flexible power adjustment..
AC fan: The power control of AC motor is relatively complex, and usually needs to be adjusted by inverter and other equipment, and the cost is relatively high..

Energy efficiency and noise level
‌DC centrifugal fan‌: It has the characteristics of high efficiency and low noise, and is suitable for noise-sensitive environments, such as home air conditioning, commercial air conditioning, etc. ‌.
‌AC fan‌: Energy efficiency and noise level vary depending on the design and usage conditions, but are generally not as efficient and quiet as DC fans ‌.

Application scenarios
‌DC centrifugal fan‌: It is widely used in air conditioning and refrigeration systems, fresh air systems, household appliances (such as range hoods, dryers, air purifiers), air purification systems, automobiles and office equipment, duct ventilation and mining explosion-proof equipment, etc.
‌AC fan‌: It is suitable for various industrial and commercial applications, including but not limited to industrial ventilation, cooling systems, air conditioning systems, etc. ‌.