Patent ID: 6517310
Filing Date: 2003-02-11
Classification: F04D,Y10S

Abstract:
A feed pump, comprising:a pump housing having at least one wall; a driven impeller having at least one end face and rotatably arranged in said pump housing for rotation about an axis of rotation, said driven impeller having a plurality of rings of vane chambers concentrically arranged at said at least one end face of said impeller, said at least one wall of said pump housing having feed channels arranged opposite said plural rings of the vane chambers on said at least one end face of said impeller; and guide vanes arranged on said driven impeller defining circumferential ends of said vane chambers, a first side of each of said guide vanes facing an intended direction of rotation being inclined by an angle relative to said axis of rotation of said impeller, wherein said angle of said first side of said guide vanes is in a proportional relationship with a distance from said axis of rotation such that said angle increases in proportion with an increasing distance from said axis of rotation, and wherein each of said guide vanes of said plurality of ring of vane chambers arranged on one end face of said at least one end face has the same proportional relationship.