Pump Arrangement

A pump arrangement comprising a pump having a pressure side and an intake side and a drive unit for the pump which are arranged in a common housing, wherein the drive unit is an axial flow electric drive which comprises a stator which is connected to the housing in a rotationally secure manner and a rotor which is arranged so as to be able to be rotated with respect to the housing, wherein the rotor is arranged with a first end face opposite the stator in an axial direction and forms an outer conveying means of the pump and has on an inner circumferential face a first conveying profile, wherein in a radial direction inside the rotor there is arranged an inner conveying means of the pump which has on an outer circumferential face a second conveying profile which cooperates with the first conveying profile in order to convey a fluid;

• wherein the conveying means are arranged with spacing from the first end face;
• wherein the inner conveying means is supported on a centering element which is connected to the housing in a rotationally secure manner;
• wherein at least the rotor and the outer conveying means are configured to be supported exclusively via the fluid conveyed by the pump;
• wherein at least between the first end face and the stator a first fluid guiding structure is arranged and connected to the pressure side so that during operation of the electric drive a gap between the first end face and the stator is producible by the fluid.