Patent ID: 6010305
Filing Date: 2000-01-04
Classification: F04D

Abstract:
An axial-flow fan, comprising:a hub having an axial dimension T.sub.N, and including a planar portion extending in a radial direction; andaxial blades connected to the hub, each axial blade having an axial dimension T.sub.Sch in a vicinity of a radially outermost portion of the hub,wherein the axial dimension T.sub.Sch of each axial blade is greater than the axial dimension T.sub.N of the hub, and each axial blade has a projection U beyond the planar portion of the hub, extending axially from a leading edge of each axial blade to the planar portion of the hub, andwherein each axial blade extends radially inward and is connected to the planar portion of the hub.