Inducer, and inducer-equipped pump

Details Inducer, and inducer-equipped pump Inducer, and inducer-equipped pump

2007-04-24

2007-04-24

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Runner has spirally arranged blade or fluid passage

C415S143000, C416S176000

Reexamination Certificate

active

10520760

ABSTRACT:
The present invention is concerned with an axial-flow or mixed-flow inducer (3) which is disposed upstream of a main impeller (2) for improving the suction capability of a pump such as a turbopump. In the inducer (3), a blade angle (βbt) from a tip (T1) to a hub (H1) at a blade leading edge (31) is substantially the same as an inlet flow angle (β1−t) at a designed flow rate.

REFERENCES:
patent: 3299821 (1967-01-01), Silvern
patent: 3442220 (1969-05-01), Mottram et al.
patent: 3522997 (1970-08-01), Rylewski
patent: 6435829 (2002-08-01), Meng et al.
patent: 60-164698 (1985-11-01), None
patent: 1-178800 (1989-07-01), None
patent: 2000-314390 (2000-11-01), None
K. Ashihara et al.; Proceedings of ASME FEDSM2002: ASME 2002 Fluid Engineering Division Summer Meeting, Jul. 14-18, 2002, pp. 1-10, Montreal, Quebec, Canada.
Christopher E. Brennen, “Hydrodynamics of Pumps” Concepts ETI, Inc., and Oxford University Press, pp. 128-138, 1994. California Institute of Technology, Pasadena, CA.
Jakob K. Jakobsen, “Liquid Rocket Engine Turbopump Inducers”, NASA SP-8052, pp. 17-24, May 1971.

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