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Investigation on Vortex Characteristics of a Multi-Blade Centrifugal Fan near Volute Outlet Region

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xysoom  長老   投稿数: 1738
Investigation on Vortex Characteristics of a Multi-Blade Centrifugal Fan near Volute Outlet Region



The origins and effects of the complex vortex structure near the volute outlet of a multi-blade centrifugal fan are investigated in this paper. Due to the wide blade and short blade channel, the airflow maintains a large radial velocity during the blade channel. This continuous radial partial velocity causes vortices to be generated at the region of volute outlet. Then, the secondary flow close to the impeller generate from the center to the sides in volute. It is obtained that the streamlines are divided into two parts (backflow and outflow) at volute outlet. Although the vortices near volute outlet region are complex, the main features of flow behavior caused by the vortex are understandable.Get more news about Vortex Centrifugal Fan,you can vist our website!
A double inlet centrifugal fan (1), in particular for the evacuation of combustion fumes in thermal power plants, producing less mechanical vibrations and lower noise levels, thanks to the presence of an anti-vortex fin (14) at the fan outlet section (4) extending on a lying plane parallel to the fluid flow direction (F).
Vortex Powerfans V-Series combine high performance and quiet operation. These fans are equipped with a mixed-flow impeller allowing more air volume than any other comparable impeller design. Furthermore, the V-Series fans operate at lower RPM (1500 to 1700) making them even quieter.

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