2025-04-08
Axial fan operate by having a prime mover drive the impeller within a cylindrical housing. Air enters through the air collector, gains energy from the impeller to increase pressure and velocity, and is then discharged axially. These blowers are available in vertical, horizontal, and inclined configurations, with impeller diameters ranging from approximately 100 mm for small-scale units to over 20 meters for large-scale models.
Small low-pressure axial flow blowers consist of components such as impellers, casings, and air collectors, and are typically mounted on building walls or ceilings; large high-pressure axial flow blowers comprise air collectors, impellers, aerodynamic fairings, casings, diffuser cones, and drive assemblies. Blades are uniformly arranged on the hub, typically numbering between 2 and 24. The greater the number of blades, the higher the air pressure generated; blade angles generally range from 10° to 45°, with larger angles increasing both airflow volume and pressure efficiency. Most components of axial flow blowers are constructed from steel plates through welding or riveting.
