An AC fan is a common cooling device that helps to reduce the surface temperature of an object by utilizing alternating current to convert mechanical energy to create air flow. The internal structure of an AC fan consists of two coils that are connected to each other to form three points in series, each of which is a common end, the start end is the beginning winding end, and the run end is the running winding end. There are many types of AC fans and the following are some of the common types:

1. Axial flow AC fans: Axial flow AC fans are a common type of AC fan characterized by diverse air volumes, sizes, and speeds, simple construction, high efficiency, and the ability to operate at high speeds. The blades of axial flow AC fans are usually curved, which can produce a large air volume, and are suitable for occasions that require a large amount of air flow, such as industrial production, building ventilation, and so on.

2. Centrifugal AC fans: Centrifugal AC fans are characterized by a ceiling-mounted structure and should generally be located on top of the equipment. The blades of centrifugal AC fans are usually rounded and can generate high wind speeds, which is suitable for occasions that require rapid heat dissipation, such as electronic equipment, automobile engines and so on.

3. Cross-flow AC fan: The airflow direction of cross-flow AC fan is transverse to the impeller, mainly designed for the internal need to absorb heat on the same horizontal surface. The blades of cross-flow AC fans are usually rectangular in shape, capable of generating smaller air volumes, and are suitable for applications requiring a small air flow, such as air conditioners, air purifiers, and so on.

4. Brushless AC fans: Brushless AC fans are a new type of AC fan characterized by electronic control technology that enables stepless speed regulation and precise control. Brushless AC fans have a wide range of speeds that can be adjusted as needed, and are suitable for applications that require precise control of heat dissipation, such as precision instruments, medical equipment, and so on.

5. Inverter AC fan: Inverter AC fan is a type of AC fan that can be adjusted according to the need for frequency conversion. Frequency conversion AC fan speed range is wider, can be adjusted according to the need for precise control of heat dissipation occasions, such as precision instruments, medical equipment.

In short, there are many types of AC fans, and different types of AC fans are suitable for different occasions and needs. When choosing an AC fan, you need to choose according to the actual situation to ensure that it can meet the cooling needs and achieve the best cooling effect.