Patent ID: 6102653
Filing Date: 2000-08-15
Classification: F04D

Abstract:
A feed pump with a driven impeller which rotates in a pump casing and has, in each case, in its end faces a ring of guide blades delimiting blade chambers and in which the blade chambers have an inflow region and an outflow region for the medium to be fed, and with partially annular ducts which are arranged in the pump casing on both sides in the region of the guide blades and which, with the blade chambers, form inlet-side and outlet-side feed chambers, an inlet duct opening into the inlet-side feed chamber and the outlet-side feed chamber opening into an outlet duct, and the feed chambers being connected to one another in the region of the blade chambers, wherein the profiles of mutually opposite blade chambers are asymmetric to one another, in the case of at least some of the blade chambers.