Abstract: An electromagnetic rotary drive includes a single-use device for single use and a reusable device for multiple use. The single-use device includes a rotor housing with a rotor, a connecting tube for a fluid, and a single-use component. The rotor housing has an inlet and an outlet, and the rotor is provided in the rotor housing for rotation about a desired axis of rotation defining an axial direction. The rotor can be magnetically driven without contact, and the connecting tube connects the inlet or the outlet of the rotor housing to the single-use component such that in the operating state the fluid flows through the connecting tube. The reusable device includes a stator, by which the rotor is magnetically driven without contact for rotation about the desired axis of rotation in the operating state.

Abstract: A pump unit includes a pump housing with an inlet and an outlet and a rotor arranged in the pump housing. The pump unit is designed for a non-contact magnetic levitation of the rotor and for a non-contact magnetic drive of the rotor by the stator. The vanes of the rotor are arranged around a central inlet area of the rotor, and the rotor includes a relief opening for generating a recirculation flow which is directed from a back side of the rotor facing away from the inlet in the direction of the central inlet area of the rotor, and a separating element arranged in the central inlet area, which redirects the recirculation flow in a radial direction perpendicular to the axial direction. The, the separating element and the relief opening of the rotor are a one-piece unit.

Abstract: A pump unit includes a pump housing and a rotor in the pump housing. The rotor includes vanes for conveying a fluid. Each vane extends in the axial direction to an end face. The pump unit is designed for non-contact magnetic levitation of the rotor and non-contact magnetic drive of the rotor by the stator. The pump housing has a cover part and a bottom part, the bottom part having a cylindrical cup to receive the rotor, and the cup can be inserted into the cup-shaped recess of the stator. The inlet has a lip which forms an axial end of the inlet, and projects into the pump chamber and, when viewed in the flow direction, ends in front of the end face of the rotor when the rotor is centered with respect to the axial direction in the operating state.

Abstract: A magnetic levitation device includes a stator including coil cores, each coil core having a longitudinal leg extending from a first end in an axial direction to a second end, and a transverse leg arranged at the second end of the longitudinal leg, and extending in a radial direction. A back iron is arranged at the first end of the coil cords and connects the first ends of the longitudinal legs. A concentrated winding is provided on each longitudinal leg, and surrounds the longitudinal leg. The stator has a cup-shaped recess into which the rotor is capable of being inserted, the cup-shaped recess arranged at an axial end of the stator, and a shielding extending in the circumferential direction along the coil cores. The shielding extends in the axial direction from a first shielding end to a second shielding end.

Abstract: A magnetic levitation includes a stator with a cup-shaped recess, which is arranged at an axial end of the stator and into which a rotor can be inserted, The wherein the stator has coil cores, each of which has a longitudinal leg and a pole piece. Each longitudinal leg extends from a first end in an axial direction to a second end, and a contact surface is arranged at the second end. Each pole piece extends from the contact surface in a radial direction to an end face. The radial direction is perpendicular to the axial direction, and the end face is arranged around the cup-shaped recess. A concentrated winding is arranged at each longitudinal leg, and surrounds the respective longitudinal leg. The longitudinal legs and the pole pieces are made of different materials.

Abstract: A magnetic levitation device includes a stator having coil cores, each coil core made of sheet metal elements stacked in the circumferential direction of the stator. Each coil core has a first and lateral boundary surfaces, and each coil core comprises a longitudinal leg extending from a first end in an axial direction to a second end, and a transverse leg arranged at the second end of the longitudinal leg, and which extends in a radial direction. A concentrated winding is provided on each longitudinal leg, and surrounds the longitudinal leg. The stator has a cup-shaped recess into which the rotor can be inserted. The cup-shaped recess is arranged at an axial end of the stator. The transverse legs are arranged around the cup-shaped recess, and one of the first or the second lateral boundary surfaces has at least one slot.

Abstract: A magnetic levitation device includes a stator with a cup-shaped recess, which is arranged at an axial end of the stator and into which the rotor can be inserted. The stator has coil cores, each of which has a longitudinal leg and a pole piece. Each longitudinal leg extends from a first end in an axial direction to a second end, and a contact surface is arranged at the second end. Each pole piece extends from the contact surface in a radial direction to an end face. The radial direction is perpendicular to the axial direction, and the end faces are arranged around the cup-shaped recess. A concentrated winding is arranged at each longitudinal leg, and surrounds a respective longitudinal leg. Each pole piece is made of transverse sheet metal elements, and the transverse elements are stacked in the axial direction.

Abstract: A pump unit for a centrifugal pump includes a pump housing with an inlet and with an outlet for a fluid to be conveyed, and a rotor arranged in the pump housing to convey the fluid, the rotor configured to be rotated about an axial direction, the pump unit capable of non-contact magnetic levitation of the rotor and non-contact magnetic drive of the rotor by a stator. The pump housing has a cover part and a bottom part to enclose the cover part, the bottom part having a cylindrical cup to receive the rotor, the cylindrical cup configured to be inserted into the cup-shaped recess of the stator. Both the inlet and the outlet of the pump housing are arranged at the cover part.

Abstract: A viscometer for inline determination of the viscosity of a fluid includes a drive device and a measuring device including a housing and a chamber. The drive device includes a housing in which a stator is arranged. The stator has and having a plurality of coil cores delimited by an end face, and carrying a concentrated winding, and being a bearing and drive stator with which the rotor is magnetically driven without contact and magnetically levitated without contact with respect to the stator. A control device actuates the stator and determines the viscosity based on an operating parameter of the electromagnetic rotary drive.

Abstract: An electromagnetic rotary drive includes a motor and a control. The motor includes a stator, with which a rotor can be magnetically driven without contact and magnetically levitated without contact with respect to the stator. The rotor is magnetically levitated in a radial plane perpendicular to the axial direction, and the stator has a plurality of coil cores, each of which has a longitudinal leg which extends from a first end in the axial direction to a second end, and a transverse leg which is arranged at the second end of the longitudinal leg and in the radial plane A winding surrounds the longitudinal leg, and the control has electrical energy to control and supply the windings. A thermal separating element is arranged between the motor unit and the control unit, and reduces a direct heat flow from the motor unit into the control unit.

Abstract: A cross-flow fan includes a cylindrical impeller having an annularly designed first magnetically effective core disposed at a first end, an annularly designed second magnetically effective core disposed at a second end, a plurality of vanes arranged between the first magnetically effective core and the second magnetically effective core, a first stator, which is a bearing and drive stator, and which interacts with the first magnetically effective core as a first electromagnetic rotary drive, and a second stator, which is at least a bearing stator, and with which the second magnetically effective core is capable of being magnetically levitated without contact with respect to the second stator. The impeller is magnetically driven without contact by the first and the second stators and magnetically levitated without contact with respect to the first stator and the second stator.

Abstract: An electromagnetic rotary drive includes a rotor including a magnetically effective core surrounded by a stator. The stator has poles arranged around the magnetically effective core and each of the poles is delimited by an end face. The rotor is capable of being magnetically driven without contact in an operating state about an axial direction, and is capable of being magnetically levitated without contact with respect to the stator. The rotor is configured to be magnetically levitated in a radial plane and is passively magnetically stabilized in the axial direction against tilting. The magnetically effective core has a rotor height which is a maximum extension of the magnetically effective core in the axial direction, the rotor height being greater than a stator pole height defined by a maximum extension of the end faces in the axial direction.

Abstract: An electromagnetic rotary drive includes a single-use device for single use and a reusable device for multiple use. The single-use device includes a rotor housing with a rotor, a connecting tube for a fluid, and a single-use component. The rotor housing has an inlet and an outlet, and the rotor is provided in the rotor housing for rotation about a desired axis of rotation defining an axial direction. The rotor can be magnetically driven without contact, and the connecting tube connects the inlet or the outlet of the rotor housing to the single-use component such that in the operating state the fluid flows through the connecting tube. The reusable device includes a stator, by which the rotor is magnetically driven without contact for rotation about the desired axis of rotation in the operating state.

Abstract: A viscometer for inline determination of the viscosity of a fluid includes a drive device and a measuring device including a housing and a chamber. The drive device includes a housing in which a stator is arranged. The stator has and having a plurality of coil cores delimited by an end face, and carrying a concentrated winding, and being a bearing and drive stator with which the rotor is magnetically driven without contact and magnetically levitated without contact with respect to the stator. A control device actuates the stator and determines the viscosity based on an operating parameter of the electromagnetic rotary drive.

Abstract: An electromagnetic rotary drive includes a rotor including a magnetically effective core surrounded by a stator. The stator has poles arranged around the magnetically effective core and each of the poles is delimited by an end face. The rotor is capable of being magnetically driven without contact in an operating state about an axial direction, and is capable of being magnetically levitated without contact with respect to the stator. The rotor is configured to be magnetically levitated in a radial plane and is passively magnetically stabilized in the axial direction against tilting. The magnetically effective core has a rotor height which is a maximum extension of the magnetically effective core in the axial direction, the rotor height being greater than a stator pole height defined by a maximum extension of the end faces in the axial direction.

Abstract: A cross-flow fan includes a cylindrical impeller having an annularly designed first magnetically effective core disposed at a first end, an annularly designed second magnetically effective core disposed at a second end, a plurality of vanes arranged between the first magnetically effective core and the second magnetically effective core, a first stator, which is a bearing and drive stator, and which interacts with the first magnetically effective core as a first electromagnetic rotary drive, and a second stator, which is at least a bearing stator, and with which the second magnetically effective core is capable of being magnetically levitated without contact with respect to the second stator. The impeller is magnetically driven without contact by the first and the second stators and magnetically levitated without contact with respect to the first stator and the second stator.