Patent ID: 6692318
Filing Date: 2004-02-17
Classification: B63H,F04D

Abstract:
A co-axial mixed flow pump comprising:an outer casing having a longitudinal centerline axis; a central body aligned co-axially within said outer casing along said longitudinal centerline axis; an axial forward looking inlet formed along said longitudinal centerline axis for receiving a flow of fluid; a mixed flow pump having a rotating impeller mounted to a forward end of said central body, said mixed flow pump impeller comprising: a hub; a plurality of blades extending outward from said hub; and a plurality of flow passages formed between adjacent blades, wherein said mixed flow pump impeller rotates about said longitudinal centerline axis to draw a flow of fluid into said mixed flow pump impeller through said inlet and imparts energy to said fluid flow; an annular passageway formed between said outer casing and said central body on a downstream side of said mixed flow impeller for receiving said fluid flow exiting said mixed flow impeller, said annular passageway being aligned axially; a plurality of stator vanes disposed between and connecting said outer casing and said central body to condition said flow exiting said mixed flow pump impeller to flow generally in the axial direction; an axial rearward looking outlet formed along said longitudinal centerline axis for discharging said flow of fluid from said mixed flow pump.