Everything You Need To Know About Centrifugal Fans

Centrifugal Fans

Centrifugal fans are crucial equipment used to move air or other gases in a variety of industries and applications. These fans are intended to provide a consistent flow of air by converting kinetic energy to potential energy. Their distinct appearance and usefulness make them extremely efficient and successful in a variety of situations. We will discuss types of centrifugal fans, their importance and much more in this article.

What Are Centrifugal Fans?

Centrifugal fans are made up of an impeller and a casing with a spirally curved contour. The air enters the impeller axially and exits through the impeller’s outer perimeter. The air flow travels in a centrifugal (or radial) direction. Centrifugal fans are also known as radial flow fans. Centrifugal fans may generate relatively high pressures. When compared to axial flow fans, they are more suited for high-pressure applications. Centrifugal fans typically feature three types of blades: forward blades, backward blades, and radial blades.

Types Of Centrifugal Fans

The kind of fan blades distinguishes three types of centrifugal fans:

  • Straight radial blades

  • forward inclined blades, and

  • backward inclined blades.

Centrifugal fans include those used in your furnace, vacuum cleaner and hair drier. They can withstand high resistance and are commonly utilized in local exhaust ventilation systems. Because they are less prone to become clogged or abraded by dust, robust radial blade centrifugal fans are the ideal kind for expelling large volumes of dust.

Why To Prefer Centrifugal Fan?

Some of the primary benefits of centrifugal fans are as follows:

  • Centrifugal fans are built to handle enormous amounts of air (axial fans are suitable for high-volume, low-pressure applications).

  • Centrifugal fans can overcome higher system resistance with increased pressure.

  • Centrifugal fans are comparatively efficient because the energy necessary to transport air rises with the cube of the air velocity, but the power required to operate a centrifugal fan only increases with the square of the air velocity.

  • Centrifugal fans are usually quieter than other types of fans.

  • Centrifugal fans may be utilized in a variety of industrial and commercial applications.

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Difference Between Axial Fan And Centrifugal Fan

Axial Fan

Axial fans may be traced back to Europe’s horizontally oriented windmills in the Middle Ages. The earliest electrically driven fans were axial fans, which were developed in the 1880s.

Axial fans are called from the direction of the airflow created by them. Rotating blades pull air parallel to an axis and drive air out in the same direction.

Axial fans provide high-flow rate airflow, which means they produce a huge volume of airflow. The airflows they generate, however, are of modest pressure. They operate with a low power supply.

Centrifugal Fan

Lieutenant General Alexander Sablukov of the Russian Empire’s Imperial Russian Army created the centrifugal fan in 1832.

Centrifugal fans, sometimes known as blowers, differ from axial fans. A fan wheel, which consists of a number of blades set on a circular hub, raises the pressure of an incoming airstream. Centrifugal fans move air radially, which means that the direction of the outward flowing air differs from the direction of the entering air by 90°.

The airflow generated by centrifugal fans is channelled through a duct or tube system. This contributes to higher pressure airflow than axial fans. Despite its lower flow rate, centrifugal fans produce a more consistent flow of air than axial fans. Centrifugal fans take more power as well.


A centrifugal fan designed by centrifugal fan suppliers is commonly used in domestic applications to circulate air through a duct. Consider your air conditioner, furnace or range hood duct. You could also encounter them in commercial settings, such as a car wash. When the wash is over, huge blowers dry your automobile in seconds. Centrifugal fans are what they’re called. They take outside air and swiftly move it, generating a pressure difference. As long as the pressure differential remains constant, the air will continue to travel and your automobile will dry swiftly.

Air conveyor machines, which employ air to transfer goods along a conveyor belt, also use centrifugal fans. Something like this may be found in a factory or warehouse.

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