A rotor device, in particular a stepper motor rotor device, with at least one hollow body, in particular a pressure pipe of a valve, and with at least one rotor assembly group that is fixated, in particular at least partially in a rotationally fixed and translationally fixed manner, in the hollow body, including at least one rotor element, which is at least configured to convert a magnetic field change into a rotational movement of the rotor element, further including a support element, which is at least configured for a rotational support of the rotor element, and including at least one fixation element, which is at least configured for a fixation of the rotor assembly group within the hollow body, in particular within the pressure pipe, wherein the support element is arranged in the hollow body in such a way that axial forces pulling at least towards the rotor element and/or axial forces pulling and pressing the support element along at least two opposing directions are transmittable via the support element.

A rotor device, in particular a stepper motor rotor device, with at least one hollow body, in particular a pressure pipe of a valve, and with at least one rotor assembly group that is fixated, in particular at least partially in a rotationally fixed and translationally fixed manner, in the hollow body, including at least one rotor element, which is at least configured to convert a magnetic field change into a rotational movement of the rotor element, further including a support element, which is at least configured for a rotational support of the rotor element, and including at least one fixation element, which is at least configured for a fixation of the rotor assembly group within the hollow body, in particular within the pressure pipe, wherein the support element is arranged in the hollow body in such a way that axial forces pulling at least towards the rotor element and/or axial forces pulling and pressing the support element along at least two opposing directions are transmittable via the support element.

A rotor is provided with: a rotor core (32); a plurality of permanent magnets (33); a substantially tubular magnet cover (71); and a load reception block (70). The rotor core (32) rotates integrally with a rotary shaft of a motor. The permanent magnets (33) are arranged on the outer peripheral part of the rotor core (32). The magnet cover (71) covers the exterior of the plurality of permanent magnets (33) and the rotor core (32), and has a flange part which is bent radially inward at the end along a rotation axis. The load reception block (70) is disposed between the flange part and the end surface of the rotor core (32) in a direction along the rotation axis, and abuts against the flange part and the rotor core (32).

A canned motor device includes a base unit, a motor, and front and rear covers. The base unit includes a side surface including inner and outer annular segments. The motor is mounted in the base unit and includes a flange. The rear cover is mounted in the base unit and includes a disk clamped sealingly between the flange and the inner annular segment. The front cover has an end abutting against the side surface and includes inner and outer surrounding segments. The disk and flange are clamped sealingly between the inner annular and surrounding segments. A first sealing element is disposed between the base unit and the disk. A second sealing element is disposed between the outer annular segment and the outer surrounding segment to form an airtight seal between the base unit and the front cover.

A fluid pump includes a pump casing, a motor connected to the pump casing, and an impeller driven by the motor. The motor includes a housing and a stator arranged in the casing. The housing is made of a non-magnetic material. The stator includes a stator iron core and a plurality of windings wound on the stator iron core. The motor further includes a sleeve having a cylindrical main body and a flange extending radially outwards from one end of the main body and fixed to the housing. An annular space is jointly bounded by the sleeve and the housing to accommodate the stator. A part of inner surface of the housing and a part of bottom surface of the flange facing the annular space are coated with a metal coating for electromagnetic wave shielding.

A rotor assembly for an electric motor for a turbomachine defines an axis of rotation. The rotor assembly includes a jacket member that is hollow and that defines an inner radial surface facing inwardly toward the axis of rotation. Furthermore, the rotor assembly includes a magnet member that is received within the jacket member. The magnet member includes an outer radial surface facing outwardly from the axis of rotation. The jacket member is made of a sintered composite material having carbon filament and a sintered matrix. Additionally, the inner radial surface of the jacket member abuts against the outer radial surface of the magnet member to retain the magnet member in a radial position relative to the axis.

A rotor assembly for an electric motor for a turbomachine defines an axis of rotation. The rotor assembly includes a jacket member that is hollow and that defines an inner radial surface facing inwardly toward the axis of rotation. Furthermore, the rotor assembly includes a magnet member that is received within the jacket member. The magnet member includes an outer radial surface facing outwardly from the axis of rotation. The jacket member is made of a sintered composite material having carbon filament and a sintered matrix. Additionally, the inner radial surface of the jacket member abuts against the outer radial surface of the magnet member to retain the magnet member in a radial position relative to the axis.

A stator and a rotor suitable for use in an electric motor or generator. The stator comprises a plurality of stator cons and a support for holding the coils around a rotor of the motor. A cylindrical sleeve is mounted radially inwardly on the support to form a barrier in use between cooling fluid passing over the coils and a rotor located within the stator. The rotor comprises a hub, a plurality of rotor segments, and a plurality of permanent magnets. The segments are arranged around the hub in a ring, with the permanent magnets disposed between the segments. A radially outwardly facing exposed surface of each magnet is spaced radially inwardly from an outer cylindrical profile defined by the segments.

A stator and a rotor suitable for use in an electric motor or generator. The stator comprises a plurality of stator cons and a support for holding the coils around a rotor of the motor. A cylindrical sleeve is mounted radially inwardly on the support to form a barrier in use between cooling fluid passing over the coils and a rotor located within the stator. The rotor comprises a hub, a plurality of rotor segments, and a plurality of permanent magnets. The segments are arranged around the hub in a ring, with the permanent magnets disposed between the segments. A radially outwardly facing exposed surface of each magnet is spaced radially inwardly from an outer cylindrical profile defined by the segments.

A brushless DC motor including a rotor, a magnet provided to the rotor, a pair of bearings to rotatably support the rotor, a stator assembly that at least partly surrounds the rotor and magnet thereof and adapted to control movement of the rotor, and a bearing tube having an exterior surface and an interior surface that defines a tube interior. The stator assembly is provided along the exterior surface of the tube and the bearings are provided along the interior surface of the tube to support the rotor and magnet within the tube interior. The motor has sample application for use in PAP devices for delivery of positive airway pressure therapy for users or patients.