The structure of axial flow fan

In industrial and agricultural ventilation fields, axial flow fans, with their unique construction and excellent performance, are key ventilation devices. The structure of axial flow fan is intricate and is the core of efficient ventilation. A deep dive into its structure helps better understand its application advantages.

Impeller: The Core Component

In the structure of axial flow fan, the impeller is the core. Unlike centrifugal fans, the airflow direction is aligned with the impeller axis, enabling high airflow and low resistance. The impeller consists of blades and a hub.

The blade shape and angle are meticulously designed to ensure smooth airflow. The blade design takes aerodynamics and fan efficiency and noise into account. When rotating, it generates thrust to push air, meeting the needs of short - distance, high - volume ventilation.

Casing: A Robust Enclosure

The casing is an important part of the structure of axial flow fan. It supports and protects the impeller and guides airflow. Typically made of high - strength metal, it withstands operating pressure and vibration. The design considers aerodynamics, with an internal shape matching the impeller to reduce drag and vortex losses, enhancing efficiency.

The shape and size of the inlet and outlet affect performance. Well - designed inlets and outlets optimize the air path. Moreover, the casing design facilitates installation and maintenance, ensuring long - term stable operation of the fan.

Bearings and Support System: Stability Assurance

In the structure of axial flow fan, bearings and supports are essential. They support the impeller rotation and ensure alignment. The choice and design of bearings affect operating smoothness and lifespan. High - quality bearings can bear loads and reduce friction and wear. Lubrication with oil or grease is common to lower resistance and extend life.

Sealing designs keep out dust and impurities to prevent damage. The support system, including brackets and connectors, must be strong and rigid. It ensures stable fan operation, reducing vibration and noise, and improving reliability and safety.