Turbocompressor assembly with a cooling system

A turbocompressor assembly, the turbocompressor assembly being divided along an axis of a rotor into at least three sections, the at least three sections comprising:

• a bearing section having at least one active magnetic bearing to support the rotor,
• a motor section comprising a motor having a stator arranged along the axis of the rotor, wherein the stator encloses a circumferential motor gap which is formed between the stator and the rotor, and
• a compressor section having a compressor for compressing a cooling fluid;
• wherein the turbocompressor assembly further comprises:
• a common gas-tight housing enclosing the rotor, the bearing section, the motor section and the compressor section;
• and
• a cooling system having an inlet for supplying the pressurized cooling fluid to the bearing section and the motor section through a fluid channel positioned between the bearing section and the motor section, wherein the cooling system further comprises a throttling device positioned adjacent to the motor gap for limiting the flow of cooling fluid from the fluid channel to the motor gap,
• wherein the cooling system further comprises a flow inlet for supplying the pressurized cooling fluid to a bearing gap in the bearing section in a direction opposite to the direction of supply of cooling fluid from the fluid inlet.

A turbocompressor assembly, the turbocompressor assembly being divided along an axis of a rotor into at least three sections, the at least three sections comprising:

• a bearing section having at least one active magnetic bearing to support the rotor,
• a motor section comprising a motor having a stator arranged along the axis of the rotor, wherein the stator encloses a circumferential motor gap which is formed between the stator and the rotor, and
• a compressor section having a compressor for compressing a cooling fluid;
• wherein the turbocompressor assembly further comprises:
• a common gas-tight housing enclosing the rotor, the bearing section, the motor section and the compressor section;
• and
• a cooling system having an inlet for supplying the pressurized cooling fluid to the bearing section and the motor section through a fluid channel positioned between the bearing section and the motor section, wherein the cooling system further comprises a throttling device positioned adjacent to the motor gap for limiting the flow of cooling fluid from the fluid channel to the motor gap,
• wherein the cooling system further comprises:
• an additional inlet for supplying the pressurized cooling fluid to the motor gap through an additional fluid channel positioned between the bearing section and the motor section;
• and
• a fluid connection between the fluid channel and the motor gap;
• wherein the throttling device is positioned such that it limits the flow through the fluid connection.