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Home > What's New > Comparison of Centrifugal Fans Based on Fan Orientation and Drive Mechanisms
  • Comparison of Centrifugal Fans Based on Fan Orientation and Drive Mechanisms2011-04-26
  • A fan wheel mounted on a hub within a casing facilitates this movement. The fan wheel is rotated by an external force, either an electric engine or an inside combustion engine. The fan consists of blades or ribs arranged around a hollow hub. The oxygen or gas to be moved enters the real estate through the side within the fan wheel into the hollow hub and then turns ninety degrees to flow more than the fan blades. The rotating fan then causes the oxygen to accelerate by imparting centrifugal force to it, therefore the name. The accelerated oxygen or gas then exits the housing Axial Fans .

    Orientation of Fan Blade:

    Radial blade fans consist of blades that extend outwards, straight from the hub. These radial fans are characterized by higher pressure, higher speed, and low volume airflow Centrifugal Fan. These qualities make them ideal for pneumatic conveying programs as properly as vacuum cleaners. This type of blade is much less delicate to solids and usually utilized in applications with particulate-laden gas streams. While the radial hint blades obtain efficiencies up to 83% by reducing the gas turbulence, the available radial blade with overloading power characteristic allows the inclusion of wear plates in case of higher abrasive applications.

    Backward-Inclined Blades

    The fan blade in this type of fan is inclined backwards against the path of rotation within the fan. Furthermore, these kinds of fans are classified into 3 types: flat blades, curved blades, and airfoil blades. The curved and flat blades are capable of managing gas flows containing fine airborne particles that usually damage the design of an airfoil. The flat blades may also be modified to provide reduced instability as in comparison with curved blades, and provide efficiencies ranging from 77 to 80%. The airfoil blades on the other hand provide better working efficiencies ranging from 84 to 91%.

    Forward-Inclined Blades

    In this fan type, the blades are oriented such which they trim forward in the identical path as rotation within the fan. These fans can be even more classified as flat blade and curved blade fans determined by the geometry within the blades. Forward curved blades are capable of delivering higher static pressure and oxygen volume than the airfoil backward blade. The forward curved blade fans operate at lower speeds and so are particularly ideal as small fans for any ventilation system. While backward curved blades are more efficient, forward curved blade exhibits a "self-cleaning" property, a simple fact that has led to their use in applications with higher dust concentrations, or to programs with oxygen conveyed material.

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