Radial continuous-flow machine with cooling and lubrication by way of a medium which flows through the machine

A radial continuous-flow machine with cooling and lubrication via a medium flowing through the machine, the medium flowing from a high-pressure side to a low-pressure side of the radial continuous-flow machine, the radial continuous-flow machine comprising:

• a housing assembly;
• and
• a rotor assembly that is rotatably mounted in an interior of the housing assembly, the rotor assembly including a rotor of an electric motor and an impeller;
• at least one first bearing to mount the rotor assembly in the housing assembly, the at least one bearing including a first bearing;
• and
• bypass orifices or bypass passages,
• wherein the electric motor further includes a stator that is a part of the housing assembly,
• wherein the rotor of the electric motor is arranged in a first region of the rotor assembly, and the stator is arranged in a first region of the housing assembly,
• wherein the first region of the housing assembly encloses the first region of the rotor assembly,
• wherein a distance that forms a first gap is provided between the first region of the housing assembly and the first region of the rotor assembly, where the first gap is connected on one side to the high-pressure side and on another side to the low-pressure side, so that a bypass flow of the medium flowing through the radial continuous-flow machine flows through the first gap during operation of the radial continuous-flow machine, and in so doing carries away heat from the rotor and/or the stator of the electric motor,
• wherein a second gap is provided between a first bearing part of the rotor assembly and a first bearing part of the housing assembly,
• wherein the first gap is connected on the low-pressure side or on the high-pressure side to the second gap so that a part of the medium flowing through the radial continuous-flow machine flows through the second gap during the operation of the radial continuous-flow machine, such that the part of the medium flowing through the radial continuous-flow machine provides for lubrication of the first bearing,
• wherein the bypass orifices or the bypass passages are provided in a transition region from the first gap to the second gap, the bypass orifices or the bypass passages connecting the transition region to the low-pressure side of the radial continuous-flow machine, so that only a part of the medium flowing through the first gap is the part of the medium flowing through the second gap during the operation of the radial continuous-flow machine,
• wherein the first bearing part of the housing assembly is composed of a first annular groove, and
• wherein the first bearing part of the rotor assembly is composed of a first ring that projects into the first annular groove and is a part of the rotor assembly.