Patent ID: 6582199
Filing Date: 2003-06-24
Classification: F04F

Abstract:
A multi-staged ejector pump comprising a housing element and a nozzle arrangement, said housing includes a pressure gas conduit having an opening in a face of said housing, a suction gas conduit having an opening in a face of said housing, and an exhaust conduit having an opening in a face of said housing, at least two of said pressure gas conduit, said suction gas conduit, or said exhaust gas conduit in a substantially parallel relationship to one another, said nozzle arrangement includes a first and second nozzle positioned coaxially in said exhaust gas conduit, said first and second nozzle includes at least one support element to reduce movement to said first and second nozzle in said exhaust gas conduit, wherein said nozzle arrangement includes at least one spacer positioned between said first and second nozzle, said spacer includes a central opening adapted to allow axial flow of a fluid between said first and second nozzles and a side opening adapted to allow fluid flow in a non-axial direction.