Patent ID: 6942446
Filing Date: 2005-09-13
Classification: F04D

Abstract:
1. A feed pump with a driven impeller which rotates in a pump casing and which has in its end faces at least one ring of guide vanes delimiting vane chambers, and with at least one part-annular channel which is arranged in the region of the guide vanes in the pump casing and which forms, with the vane chambers, a feed chamber from an inlet duct to an outlet duct, comprising: a plurality of feed chambers, of which the outlet ducts and inlet ducts are each arranged symmetrically about an axis of rotation of the impeller, wherein vane chambers arranged on the two end faces of the impeller overlap, and the inlet ducts of the feed chambers are arranged on one end face of the impeller and the outlet ducts on the other end face of the impeller.