Fan for air handling system

Details Fan for air handling system Fan for air handling system

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 25/08 (2006.01) F04D 29/40 (2006.01) F04D 29/42 (2006.01) F04D 29/66 (2006.01)

Patent

CA 2216500

A fan unit for a building's air handling system comprising a support structure including a front wall with an air inlet opening formed therein and a bladed fan wheel rotatably mounted on the structure about its central axis and having an axial air intake on a front side thereof confronting the inlet opening. The fan wheel has an annular air outlet extending about its circumference. A fixed centerbody directs air flow into and within the fan wheel and extends along the central axis from a narrow front end located in the inlet opening to a wider rear end within the fan wheel. This centerbody has an annular exterior which curves outwardly in a section thereof adjacent the rear end. The fan unit has an additional wall spaced from the front wall and these walls form an annular air passageway.

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