Impeller blade reinforcement

Details Impeller blade reinforcement Impeller blade reinforcement

1975-04-16

1977-06-07

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Radially extending web or end plate

416194, F04D 2924

Patent

active

040280055

ABSTRACT:
A drum-type impeller for a centrifugal blower is provided with reinforcement against damage by centrifugal force at high peripheral speeds by reinforcing means such as gussets or rods running from the underside of each blade toward either or both of the hub disk and inlet ring and inserted near the attachment thereat of the trailing blade. Vortex formation at the underside of a blade inforced by a gusset is reduced by providing a notch at the point of attachment of the blade at approximately the same radial distance as the leading edge of the gusset. Vortex formation at the trailing surface of a gusset is relieved by using a double gusset with a slot between.

REFERENCES:
patent: 113592 (1871-04-01), Staples
patent: 184345 (1876-11-01), Croft et al.
patent: 991134 (1911-05-01), Capell
patent: 1030561 (1912-06-01), Blackmer et al.
patent: 1086686 (1914-02-01), Neumann
patent: 1186822 (1916-06-01), Neumann
patent: 1217386 (1917-02-01), Banner
patent: 1246090 (1917-11-01), Hagen
patent: 1953064 (1934-04-01), Dowson
patent: 1983201 (1934-12-01), Van Rijswijk
patent: 1985705 (1934-12-01), Whiton
patent: 3902823 (1975-09-01), Minato et al.

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