Cross flow cooling fan

F - Mech Eng,Light,Heat,Weapons – 04 – D

Patent

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230/8

F04D 17/04 (2006.01) F04D 29/26 (2006.01) F04D 29/38 (2006.01)

Patent

CA 1166212

ABSTRACT OF THE DISCLOSURE A cross flow fan (10) imparts both radial and axial flow com- ponents to airflow passing through the fan, resulting in a conical exit airflow, The fan includes a hub (12) and circumferentially spaced, radi- ally extending fan blades (14, 16, 18, 20, 22, and 24), Backing plate por- tion (34, 36, 38, 40, 42, and 44) is associated with each of the blades 14-24. The backing plate portions lie on a conical plane which rakes backwardly from the hub in a direction downstream from the fan. The fan blades are disposed in a plane oblique to their corresponding backing plate portions, so that they intersect the latter along a joining edge (50). Each of the fan blades includes portions having greater (56) and lesser (58) radii of curvature, The portions (58) of lesser radii of curvature cooperate with the corresponding backing plate portions (36) to provide a radial component to the flow through the fan whereas the leading edge portions (56) provide the axial flow component.

373006

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