Abstract: A terminal connection structure of a motor casing configured to house an AC motor of a plurality of phases, the terminal connection structure includes a plurality of terminal blocks located side by side to each other along a circumferential direction of the motor casing and including a plurality of terminal surfaces facing away from the motor casing, and a plurality of terminals that penetrate the terminal blocks and are configured to be electrically connected to the phases of the AC motor. A portion of each of the terminals is located on the terminal surfaces. At least one terminal surface is offset in a perpendicular direction from a plane aligned with another terminal surface of the plurality of terminal surfaces.

Abstract: A rotary machine includes a rotating shaft, a compressor impeller, a compressor housing, a diffuser plate and an impeller installation portion. The diffuser plate is fixed to the compressor housing and forms a diffuser flow path. The impeller installation portion faces the compressor impeller and is located between the rotating shaft and the diffuser plate. The diffuser plate is located around an outer circumference of the impeller installing portion and is attached to the impeller installation portion.

Abstract: An electric turbocharger includes an electric motor including a stator disposed annularly about a rotation axis, a first member thermally coupled with a first end face of the stator and forming a first cooling passage that extends around the rotation axis, and a second member thermally coupled with a second end face of the stator and accommodating a second cooling passage that extends around the rotation axis.

Abstract: An electric turbocharger includes a motor including a stator, and a diffuser plate thermally coupled to an end surface of the stator to transfer heat from the stator to the diffuser plate. The diffuser plate forming a cooling flow path to circulate a cooling medium.

Abstract: A thrust air bearing includes a plurality of foil units arranged in a circle. Each foil unit includes a top foil portion, and a bump foil portion integrally provided with the top foil portion and disposed opposite the top foil portion in a circumferential direction forming the circle. The foil unit is disposed such that the top foil portion lies on top of the bump foil portion of another adjacent foil unit.

Abstract: A rotary machine includes an electric motor including a rotor and a stator, a rotary shaft to be rotated by driving the electric motor, an impeller attached to the rotary shaft, an inverter that controls the electric motor, and a plurality of lead wires that exit from the stator and connected to the inverter. The stator includes an inner periphery facing the rotor, and an outer periphery opposite the inner periphery, and the inverter is located in a circumferential direction along the outer periphery of the stator.

Abstract: A centrifugal compressor includes a rotary shaft of a compressor impeller, a gas bearing structure that supports the rotary shaft, a motor that rotates the rotary shaft, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, a gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a bearing cooling line that connects the gas bleed port to the gas bearing structure, and a heat exchanger that is disposed on the bearing cooling line. The heat exchanger is mounted on at least one of the motor housing and the compressor housing.

Abstract: A centrifugal compressor includes a motor that rotates a rotary shaft of a compressor impeller, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, an gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a cooling gas line which is connected to the gas bleed port and through which a part of compressed gas compressed by the compressor impeller passes, a cooling liquid line of which at least a part is provided in the motor housing and through which cooling liquid of which the temperature is lower than the temperature of the compressed gas passes, and a heat exchanger that is disposed on the cooling gas line and the cooling liquid line.

Abstract: A centrifugal compressor includes a rotation shaft, a compressor impeller attached to one end of the rotation shaft, and a first wall surface and a second wall surface formed inside a housing so as to face each other in an axial direction. A diffuser is formed between the first wall surface and the second wall surface in the axial direction, and a wall portion separates the diffuser from an axial space inside the housing in which the rotation shaft extends. The wall portion includes at least one extraction hole that fluidly couples the diffuser to the axial spate and that is configured to extract a gas from the diffuser.

Abstract: A centrifugal compressor includes a motor that rotates a rotary shaft of a compressor impeller, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, an gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a cooling gas line which is connected to the gas bleed port and through which a part of compressed gas compressed by the compressor impeller passes, a cooling liquid line of which at least a part is provided in the motor housing and through which cooling liquid of which the temperature is lower than the temperature of the compressed gas passes, and a heat exchanger that is disposed on the cooling gas line and the cooling liquid line.

Abstract: A centrifugal compressor includes a rotation shaft, a compressor impeller attached to one end of the rotation shaft, and a first wall surface and a second wall surface formed inside a housing so as to face each other in an axial direction. A diffuser is formed between the first wall surface and the second wall surface in the axial direction, and a wall portion separates the diffuser from an axial space inside the housing in which the rotation shaft extends. The wall portion includes at least one extraction hole that fluidly couples the diffuser to the axial spate and that is configured to extract a gas from the diffuser.

Abstract: A centrifugal compressor includes a rotary shaft of a compressor impeller, a gas bearing structure that supports the rotary shaft, a motor that rotates the rotary shaft, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, a gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a bearing cooling line that connects the gas bleed port to the gas bearing structure, and a heat exchanger that is disposed on the bearing cooling line. The heat exchanger is mounted on at least one of the motor housing and the compressor housing.