An axial flux motor water pump comprising a housing, a cover attached to the housing, a stator mounted within the housing, the stator comprising a plurality of stator poles mounted in a ring, each stator pole comprising an electric wire winding, a rotor journaled to the housing in cooperating relation to the stator on a single bearing, an impeller fixed to an end of the rotor, a plurality of magnets mounted to an end of the rotor in cooperative relation to the stator poles, a seal between the rotor and housing whereby the stator and magnets are in a dry zone, the stator enrobed in thermal potting within the housing; and power electronics contained in the cover. The rotor portion of the rotor may be manufactured in a sintering process.

A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller.

An electrical pump or generator apparatus comprises a sealed housing having fluid inlet and outlet ports and an impeller rotatably mounted inside a cavity of the housing, the impeller being mounted on a shaft for rotation about an axis, the shaft being confined inside the sealed housing. An electric machine of the pump has a stator disposed outside the housing and a rotor sealed inside the housing. In use a rotating magnetic field extends through a boundary wall of the housing to magnetically couple the stator and rotor on opposite sides of thereof. The need for a shaft seal is thus avoided and the apparatus is more compact than conventional pumps and generators.

A thin pump includes a casing, a rotor, and a stator. The casing has a bottom surface, an outer surface, a lower chamber, an upper chamber, an inlet channel, and an outlet channel. The outer surface is connected to the bottom surface. The upper chamber and the lower chamber connected to each other are surrounded by the outer surface. The upper chamber is located further away from the bottom surface than the lower chamber. The inlet channel and the outlet channel are located on the outer surface. The inlet channel and the outlet channel are respectively connected to the upper chamber and the lower chamber. The rotor includes an impeller rotatably disposed in the lower chamber and a magnetic component disposed on the impeller. The stator disposed in the casing corresponds to the magnetic component so as to drive the rotor to rotate with respect to the casing.

A motor includes: a first portion that includes a plurality of permanent magnets; and a second portion that includes a plurality of coils, wherein the first portion or the second portion is configured to be rotatable around a rotation axis, wherein the plurality of permanent magnets are circumferentially arranged about the rotation axis, and wherein the plurality of coils are arranged so as to face the plurality of permanent magnets in a direction along the rotation axis, and the motor further includes: a control unit that controls a rotational speed and an attitude of the rotating first portion or the rotating second portion by controlling currents that are applied to the plurality of coils.

This disclosure relates to a thin pump including a case, a rotor, and a stator. The case has a bottom surface, a lower chamber, an upper chamber, and an accommodation space. The upper chamber is located further away from the bottom surface than the lower chamber. The upper chamber has two opposite ends respectively in fluid communication with the lower chamber and the accommodation space. The rotor includes an impeller and a magnet. The impeller is rotatably disposed in the lower chamber of the case. The magnet is disposed on the impeller. The stator is disposed in the case. The stator corresponds to the magnet of the rotor so as to drive the rotor to rotate with respect to the case.

Provided is an axial gap type motor employing a non-rare earth magnet, and a water pump using same. The axial gap type motor for a water pump (EWP) comprises: a rotor rotatably supported on a fluid flow passage between a pump cover and a body case; a stator arranged in a lower space formed by the body case and an upper cover, so as to generate a rotating magnetic field, thereby rotating the rotor; and a partition arranged on the body case in order to separate the rotor from the stator. The rotor can use a ferrite magnet, which is a non-rare earth magnet.

A pumping device includes a single-use device and a reusable device. The single-use device is to be inserted into the reusable device and includes two pump units in series, one behind the other. Each pump unit includes a rotor for a bearingless motor, and can be magnetically levitated and driven without contact for rotation about an axial direction. The reusable device includes a stator for each rotor which form an electromagnetic rotary drive for rotating the rotor about the axial direction. Each stator is a bearing and drive stator with which the rotor can be magnetically driven and levitated without contact with respect to the stator. An independent control device is provided for each stator, and can independently activate a respective stator.

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.

A pump device (10) includes a housing (30) including a blood inflow port (38) through which blood flows in, and having a fixed-side repulsive magnet (44) disposed in an annular manner; and an impeller (14) that is rotatably housed inside the housing (30), and having a movable-side repulsive magnet (56) disposed in an annular manner. The fixed-side repulsive magnet (44) is disposed in a position offset toward the blood inflow port (38) side relative to the movable-side repulsive magnet (56). In the fixed-side repulsive magnet (44) and the movable-side repulsive magnet (56), a fixed-side repulsive surface (44a) and a movable-side repulsive surface (56a) adjacent to each other have the same polarity.