Patent ID: 6302639
Filing Date: 2001-10-16
Classification: F04D

Abstract:
A feed pump having a driven impeller for rotation in a pump casing, comprising:at least one ring of blade chambers which is arranged on one end face of the impeller, said blade chambers delimited laterally by blades arranged at an angle .alpha. to the axis of rotation of the impeller, wherein the blades (3) are arranged, over the height of the blade chambers (2), at an angle .alpha.(r) corresponding to the formula ##EQU3##r being any distance between the center point of the impeller (1) and a point on the blade (3), r.sub.a being the distance between the center point of the impeller (1) and a predetermined point on the blade and .alpha.(r.sub.a) being a predetermined angle; anda feed channel located opposite the ring of blade chambers and arranged in the wall of the pump casing.