High performance inducer

Details High performance inducer High performance inducer

2004-12-06

2008-11-25

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Runner has spirally arranged blade or fluid passage

Extending along runner axis

C416S176000, C416S177000, C416S183000, C416S22300B, C062S050600

Reexamination Certificate

active

07455497

ABSTRACT:
An improved high performance inducer for a pump assembly includes a set of primary blades and splitter blades to achieve a vapor-to-liquid ratio up to 1:1. Minimum back pressure is provided at the leading edge to aid in getting fluid into the blades where the vapor component of the pumped fluid is removed. A hub increases in diameter over the axial extent of the helical blades, thereby resulting in a decreasing depth of the blades between the inlet and outlet of the inducer. A substantial improvement in removing fluid from a storage reservoir is obtained resulting in a substantial savings in shipping costs.

REFERENCES:
patent: 1874450 (1932-08-01), Coats
patent: 3369715 (1968-02-01), Carter
patent: 3442220 (1969-05-01), Mottram et al.
patent: 3522997 (1970-08-01), Rylewski
patent: 4904158 (1990-02-01), Kun
patent: 5947684 (1999-09-01), Kato et al.
patent: 6435829 (2002-08-01), Meng et al.
patent: 567368 (1945-02-01), None
Wood, G.M., et al., “An Experimental Study of Cavitation in a Mixed Flow Pump Impeller”, Received Oct. 13, 1959.

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