Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Radially extending web or end plate
Patent
1994-03-28
1995-02-07
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Radially extending web or end plate
416179, 416223B, F04D 2922, F04D 2930
Patent
active
053870875
ABSTRACT:
A fan is capable of directing air passing between upstream and downstream ends of the fan to flow in both axial and radial directions and includes a hub, a plurality of fan blades and a ring. The hub is shaped as a truncated cone with a wide upstream end and a narrow downstream end. Each of the fan blades has an upstream edge, an outer end and an inner end connected to the hub. The fan blades project radially and outwardly from the hub and are spaced circumferentially. The ring is disposed at the upstream edges of the fan blades and interconnects the outer ends of the latter. The ring is formed with a plurality of curved strips which extend respectively between two adjacent fan blades to permit air flow in the radial direction. The curved strips cooperate with the hub to form passages which permit air flow in the axial direction, and are shaped as sections of a parabolic surface which opens toward the upstream end of the hub.
REFERENCES:
patent: 1469870 (1923-10-01), Allen
patent: 1879812 (1932-09-01), Miller
patent: 2508144 (1950-05-01), Carville
patent: 3727593 (1973-04-01), Enke
patent: 4521154 (1985-06-01), Corbett
patent: 4670677 (1987-06-01), Snider et al.
Lee Michael S.
Look Edward K.
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