Pump system

A pump assembly comprising a shell, an inner casing adapted to allow fluid therethrough comprising an inner space defining a first fluid pathway, and an electric motor located within the inner space and adapted for fluid to traverse the electric motor for propulsion of the fluid, the electric motor comprises a stator and a rotor defined by a hollow body operatively connected to the stator for rotation of the rotor during operation of the stator, the rotor comprising a blade assembly within the hollow body for rotation with the rotor for propulsion of the fluid traversing the pump assembly, wherein the shell and/or inner casing are configured so that a second fluid pathway is defined around the inner casing for cooling of the inner casing and the interior of the inner casing.

A pump assembly comprising a shell, an inner casing adapted to allow fluid therethrough comprising an inner space defining a first fluid pathway, and an electric motor located within the inner space and adapted for fluid to traverse the electric motor for propulsion of the fluid, the electric motor comprises a stator and a rotor defined by a hollow body operatively connected to the stator for rotation of the rotor during operation of the stator, the rotor comprising a blade assembly within the hollow body for rotation with the rotor for propulsion of the fluid traversing the pump assembly, the rotor comprises a hollow body having an outer surface facing an inner surface of the stator, the outer surface comprising at least one pocket adapted to receive at least one magnet.

A centrifugal pump assembly comprising a shell comprising an inner space adapted to allow fluid flow from one end to the other end, an impeller fluidly connected to the other end, and an electric motor located within the inner space and adapted for fluid to traverse the electric motor for propulsion of the fluid, the electric motor comprises a stator and a rotor operatively connected to the impeller and the stator for rotation of the rotor during operation of the stator, the rotor comprising a blade assembly for rotation with the rotor for propulsion of the fluid traversing the pump assembly and being attached to the impeller, wherein the shell is configured so that a fluid pathway is defined around the stator for cooling of the electric motor.