Turbofan and mold thereof

Details Turbofan and mold thereof Turbofan and mold thereof

2005-02-01

2005-02-01

Verdier, Christopher (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

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

Radially extending web or end plate

C249S059000

Reexamination Certificate

active

06848887

ABSTRACT:
Disclosed is a turbofan which includes a hub coupled with a rotational shaft of a driving device, a plurality of blades installed at a circumference of the hub radially, and a shroud at an opposite side to the hub so as to be coupled with a plurality of the blades wherein the blades are placed between the shroud and the hub, and wherein the hub, blades, and shroud are formed in one body and wherein the shroud comprises a first extension protruding to extend from a coupling part with a leading edge of each of the blades in an inward radial direction of the rotational shaft and a second extension extending straightly from the first extension in a direction of the rotational axis toward a side opposite to the hub.

REFERENCES:
patent: 6558120 (2003-05-01), Kim et al.
patent: 6679682 (2004-01-01), Lee
patent: 942648 (1963-11-01), None
patent: 54-72501 (1979-06-01), None
patent: 7-293494 (1995-11-01), None

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