Patent ID: 6425734
Filing Date: 2002-07-30
Classification: F04D

Abstract:
A feed pump for installation in a baffle of a fuel tank, comprising:a casing comprising part-annular channels, each part-annular channel extending from an inlet channel to an outlet channel; an impeller rotatably arranged for rotating in said casing about an axis of rotation, said impeller having at least two rings of guide blades delimiting blade chambers and concentrically arranged thereon and comprising a radially inner ring of guide blades and a radially outer ring of guide blades, each of said at least two rings of guide blades being arranged opposite one of said part-annular channels, said impeller further comprising and end face having a plurality of levels in the axial direction relative to said axis of rotation, wherein said radially inner ring of guide blades and said radially outer ring of guide blades are arranged on two different ones of said plural levels.