Axial flow fan impeller

Details Axial flow fan impeller Axial flow fan impeller

F - Mech Eng,Light,Heat,Weapons

04

D

230/20

F04D 29/32 (2006.01)

Patent

CA 1235400

ABSTRACT OF THE DISCLOSURE In an axial flow fan impeller having a number of blades, which are rotatably journalled in a wheel rim, each with its blade root which is connected with an adjust- ing device for the blades, the wheel rim comprises as a supporting member for the blades an annular body of revolution with bores for the blade shafts and a cut-out for taking up a thrust bearing. The body of revolution is connected with the body plate and the front plate of the impeller through tubular connecting pieces, which are symmetrical relative to the body of revolution and are elastically deformable by loading forces acting in the radial plane of the wheel, but have a relatively great rigidity against forces acting in the axial direction. Thereby, the impeller may be designed as a welded construc- tion without the occurrence of dynamic loads exceeding the allowable values for the welding joints.

465031

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