Centrifugal Fan Blade Design

Axial and propeller fans.

Centrifugal fan blade design.

The redesign effort was geared towards meeting the design volute exit pressure while reducing the power required to operate the fan. Fan parts impeller design the centrifugal fans impeller have five basic blade shapes and a number of impeller configurations i e dwdi double width double inlet or swsi single width single inlet. 5 found that the choice of a strongly aft loaded hub and mildly aft loaded shroud for the main blade. A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid.

Axial propeller fans are more suited for applications with lower volumes and pressures. In an axial fan the air flows in parallel to the shaft. Radial blades are ideal for dust laden air or gas because they are less prone to blockage dust erosion and failure and have self cleaning properties as observed by mohamed ali 20. 9 to 16 blades of airfoil curved away from the direction of rotation.

It is common to classify axial fans upon their wheel like. Given the high performance of the baseline impeller the redesign adopted a high. A very common type of centrifugal fan typically referred to as a centrifugal blower uses a squirrel cage type wheel with many forward curved blades. Such a fan is also called a blower fan biscuit blower citation needed or squirrel cage fan because it looks like a hamster wheel.

The highest efficiency of all of the centrifugal fans. Centrifugal fan blade types. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink. A method is presented for redesigning a centrifugal impeller and its inlet duct.

Suitable for higher static pressure up to 14 3 5 kpa. The highest speed of the centrifugal fans. It has ideal zero slope in h q. Centrifugal fan design methodologies studies on radial tipped centrifugal fan 111 under dust laden conditions.

The double discharge volute casing is a structural constraint and is maintained for its shape. Centrifugal compressor fan profiler and blade design software. The impeller design will depend on the aerodynamic duty and the operating conditions. The axstream s centrifugal compressor fan profiler and blade design software module is used to create and edit 3d airfoils for full or partial channel length.

A wide range of geometric tools and interactive charts allows users to configure the centrifugal radial or compressor. Namic design of a centrifugal impeller with the pressure ratio up to 6 2 zange neh et al. Centrifugal fans come in four basic fan types each with its own specific purpose. Centrifugal fans with forwarded blades are suited for application with higher air flow volumes and pressures.

Radial these are high pressure fans with medium airflow.