A rotating body is shorter in radial direction than in axial direction. The inner circumferential surfaces of a first bearing and a second bearing are fixed at an outer circumferential surface of the shaft member. In the axial direction, the outer diameter of the shaft member is substantially the same from a part, of the shaft member, opposing the first bearing to a part, of the shaft member, opposing the second bearing, and the inner and outer diameters of the rotating body are substantially the same from an end part, of the rotating body, on the first bearing side to an end part, of the rotating body, on the second bearing side. In the axial direction, one of stators is disposed at a central part (C1) of the shaft member, one of magnets is disposed at a central part (C2) of the rotating body.

This centrifugal blood pump apparatus includes an impeller (10) provided in a blood chamber (7), and a plurality of coils (20) provided in a motor chamber (8) for driving the impeller (10) to rotate with a dividing wall (6) interposed therebetween. A flexible substrate (23) in the shape of a strip is arranged to surround outer circumferences of the plurality of coils (20), and is connected to the plurality of coils (20) and a connector (24). A driving voltage (VU, VV, VW) is externally supplied to the plurality of coils (20) via the connector (24) and the flexible substrate (23). Thus, assembling workability, productivity and reliability are improved.

Subsea turbomachine for boosting the pressure of petroleum fluid flow from subsea petroleum productions wells or systems, comprising an electric motor and a compressor or pump driven by the electric motor, a fluid inlet and a fluid outlet, distinctive that the turbomachine comprises a pressure housing common for the electric motor or stator, and compressor, pump or rotor; a magnetic gear inside the common pressure housing for operative connection between the motor or stator and compressor, pump or rotor; and a partition inside the common pressure housing, arranged so as to separate a motor or stator compartment from a compressor, pump or rotor compartment.

A fan drive assembly for a vehicle, which can provide reverse fan flow. The assembly has a fan, where separate forward and reverse clutches are coupled to the fan. The reverse clutch has a greater torque capacity than the forward clutch, such that when the reverse clutch is applied, the forward clutch is made to slip, allowing for the reverse rotation and flow of the fan.

A pump arrangement includes an axial-flow machine and a drive to convey fluid mounted in a housing. The axial-flow machine is formed by at least one first rotor having permanent magnets, a shaft connected to the first rotor and a stator arrangement with stator teeth distributed concentrically around the shaft axis circumferentially and axially separated from the first rotor by an air gap. The stator teeth have axially-opposite end portions and a tooth core therebetween wound with at least one coil winding. The second end portion, turned away from the first rotor, of each stator tooth forms a tooth root joined to a back plate. The first rotor is an eccentric disk and on the side away from the stator arrangement has an eccentric cam, radially spaced from the shaft axis, and rotatably and torque-transmittingly connected to the drive. An axial-flow machine and a compressor includes the pump arrangement.

A gas turbine engine including a compressor has a first compressor section and a second compressor section, a combustor fluidly connected to the compressor, and a turbine fluidly connected to the combustor. The turbine includes a first turbine section and a second turbine section. A first shaft connects the first compressor section and the first turbine section. A second shaft connects the second compressor section and the second turbine section. A fan is connected to the first shaft via a geared architecture. The first shaft includes at least one magnetic section. An electromagnet is disposed radially outward of the first shaft at an axial location of the at least one magnetic section, relative to an axis defined by the gas turbine engine.

Provided is a motor rotor which, without changing an integral fastening structure relying on swage pins, increases resistance to the excessive excitation force of the motor rotor and which can easily prevent decreases in fastening strength; a motor that uses the motor rotor, and an electric compressor are also provided. This motor rotor is provided with a cylindrical rotor core comprising multiple laminated magnetic steel sheets, end plates and balance weights laminated on both ends of the rotor core, and multiple headed swage pins which are inserted from one side and which integrally fasten the rotor core, the end plates and the balance weights. The material of the balance weight arranged to the head of the swage pin is harder than that of the swage pin, and the material of the balance weight arranged to the swage part of the swage pin is softer than that of the swage pin.

A pump includes: a rotor; a magnetic bearing supporting the rotor by a magnetic force; a drive mechanism rotationally driving the rotor; a pump mechanism including an impeller attached to the rotor; and a control unit controlling the magnetic bearing which includes: a bearing rotor member in the rotor formed from a magnetic material; and a bearing stator member facing the bearing rotor member, the bearing stator member has: a core formed from a magnetic material; and a coil wound around the core, the drive mechanism includes: a driven member adjacent in a radial direction to the bearing rotor member; and a drive portion facing the driven member in the radial direction, and magnetically coupled to the driven member to drive the rotor, and the control unit corrects rotational position of the rotor based on a detection signal from a first sensor portion capable of detecting displacement of the rotor.

An axial fan includes a rotatable fan blade assembly including a plurality of fan blades, and a plurality of permanent magnets affixed to the plurality of fan blades. A stationary guide channel is located radially outboard of the fan blade assembly. A plurality of field coils are located at the guide channel and are configured to drive rotation of the fan blade assembly via magnetic interaction with the plurality of permanent magnets when the plurality of field coils are sequentially energized. A method of operating an axial fan includes energizing a plurality of field coils, urging a fan blade assembly out of contact with the guide channel via magnetic interaction between the plurality of field coils and a plurality of permanent magnets located at the fan blade assembly, and sequentially pulsing the plurality of field coils thereby urging rotation of the fan blade assembly about an axis of rotation.

A The hybrid pump includes an impeller, a magnetic drive configured to control rotation of the impeller, a drive shaft combined with the magnetic drive and a motor. The drive shaft rotates in response to rotation of an axis of the motor, the magnetic drive rotates when the drive shaft rotates, the impeller rotates in response to rotation of the magnetic drive, a drive body of the magnetic drive is formed of plastic, and the drive shaft is formed of metal.