Impeller for centrifugal pumps

Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Radially extending web or end plate

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

416223B, 415213B, F04D 2924

Patent

active

042081696

ABSTRACT:
A radial or semiaxial impeller for centrifugal pumps has an annulus of vanes whose inlet edges are disposed at the periphery of a circle and are bounded by convex transition surfaces having small radii of curvature. The inner portions of the suction sides of vanes are bounded by flat or slightly curved surfaces which merge gradually into concave surfaces bounding the outer portions of the respective suction sides. The length of each flat or slightly curved surface is between 3 millimeters and the vane pitch. The ratio of the radii of curvature of transition surfaces at the inlet edges of the vanes to the vane pitch is between 0.0035 and 0.04 and/or the ratio of these radii to the average thickness of the inlet portion of a conventional vane is between 0.04 and 0.50. Such construction of the vanes reduces the likelihood of excessive erosion as a result of cavitation.

REFERENCES:
patent: 978753 (1910-12-01), Hurst
patent: 1755321 (1930-04-01), Hendrickson
patent: 2888244 (1959-05-01), Pekarek
patent: 2987806 (1961-06-01), Pekarek
patent: 3564689 (1971-02-01), Hirtenlechner
patent: 3751179 (1973-08-01), Wassmann
patent: 3788765 (1974-01-01), Rusak
patent: 3904308 (1975-09-01), Ribaud
patent: 4010530 (1977-03-01), Delgrosso et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Impeller for centrifugal pumps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Impeller for centrifugal pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impeller for centrifugal pumps will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-473355

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.