What are the different types of industrial fans?
Industrial fans are generally broken down into different fan types; Axial, Mixed Flow and Centrifugal, and have a wide variety of uses including providing clean air, fume extraction, moisture control, combustion, air supply and exhaust applications.
Consisting of a propeller rotating in a round section of duct, an Axial fan is typically mounted to a wall or duct to exhaust air from a system or process. An Axial fan moves air in a linear direction, meaning the air flow does not change direction but is forced to move parallel to the shaft. They are typically used in handling critical processes that require drying, ventilation, fume & hot air exhaust.
A Mixed Flow fan is similar in arrangement to an Axial fan, with the added ability of being able to generate greater pressure. Air enters the impeller in an Axial direction, but then moves to a radial direction, changed by the shape of the blade. A Mixed Flow fan is beneficial for use when installation of a Centrifugal fan would be difficult.
A Centrifugal fan has an impeller which increases the speed of the air that has entered the fan. Initially entering the fan in an axial direction, the air then changes direction using Centrifugal force and is released in a radial direction. In order to achieve the required air flow speed, a Centrifugal fan is fitted with dampers, louvers and guided vanes. As all of their moving parts are enclosed, Centrifugal fans are perfect for use in air pollution and filtration systems.
