Integrated modular, multi-stage motor-pump/compressor device

A device, comprising:

• an outer housing;
• a non-rotating cylindrical shaft fixedly positioned within the housing;
• an electric motor stator positioned within the outer housing;
• a rotatable integrated motor/pump rotor positioned within the electric motor stator, the rotatable integrated motor/pump rotor comprising at least one electromagnet driver device that is adapted to be electromagnetically coupled with the electric motor stator and multiple pump stages each comprising at least one impeller, where an inner surface of the rotatable integrated motor/pump rotor and the impeller define a primary process fluid flow path within the rotatable integrated motor/pump rotor;
• wherein the integrated motor/pump rotor comprises a plurality of rotatable segmented housing members secured to one another in back-to-back fashion, wherein each of the plurality of segmented housing members comprises at least one impeller that is rotationally fixed to an inner surface of the segmented housing member, the integrated motor/pump rotor further comprising a diffuser that is rotationally fixed to the non-rotating shaft and located entirely within the segmented housing members;
• and
• further comprising a conical member positioned between the at least one impeller and the non-rotating shaft, the conical member rotationally fixed to the non-rotating shaft, and
• wherein the at least one impeller is formed integrally with the segmented housing member.