Electrical machine

An electrical machine comprising a stator with a stator body supporting an electrical stator and a rotor, the rotor being supported by means of a bearing comprising a radial bearing section forming a radial gas bearing and an axial bearing section forming an axial gas bearing, the stator side parts of these bearing sections being a stator side radial bearing part and a stator side axial bearing part which are rigidly connected to one another and together form a stator bearing structure,

• wherein the stator side radial bearing part is a bushing,
• and wherein the bushing is radially surrounded by a cooling body, and the cooling body is radially surrounded by a stator flange, and the stator body and the stator flange are manufactured as a single part or are materially bonded to one another.

An electrical machine, comprising a stator with a stator body supporting an electrical stator and a rotor, the rotor being supported by means of a bearing,

• wherein a heat transfer wall is arranged axially adjacent to the electrical stator, and an electrically non-conducting and thermally conducting gap tube is attached to the stator radially adjacent to the rotor where the rotor comprises a permanent magnet, and the heat transfer wall is thermally coupled to the gap tube.

An electrical machine, comprising a stator with a stator body supporting an electrical stator and a rotor, the rotor being supported by means of a bearing comprising a radial bearing section forming a radial gas bearing and an axial bearing section forming an axial gas bearing, the stator side parts of these bearing sections being a stator side radial bearing part and a stator side axial bearing part which are rigidly connected to one another and together form a stator bearing structure,

• wherein the stator bearing structure is mounted to other parts of the stator stator by the stator side axial bearing part, in particular an axial bearing assembly, being rigidly mounted to these other parts;
• wherein the axial bearing assembly is compressed in the axial direction by a resilient element, wherein this resilient element acts as a disc spring and also serves as a wall of a flow path of a compressor driven by the electrical machine, in particular as a wall of a centrifugal compressor's diffuser.