公开(公告)号：US20220345016A1

公开(公告)日：2022-10-27

申请号：US17710420

申请日：2022-03-31

Applicant: Levitronix GmbH

Inventor： Daniel STEINERT ,  Thomas SCHNEEBERGER ,  Thomas NUSSBAUMER ,  Marcel STETTLER ,  Jonas GINÉ

IPC: H02K21/02 ,  F04D13/06 ,  F04D1/00

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.

公开(公告)号：US20220341428A1

公开(公告)日：2022-10-27

申请号：US17710566

申请日：2022-03-31

Applicant: Levitronix GmbH

Inventor： Marcel STETTLER ,  Thomas SCHNEEBERGER

IPC: F04D13/06 ,  H02K1/18 ,  H02K7/14 ,  H02K19/06 ,  F04D13/02 ,  F04D29/42

Abstract: An electromagnetic rotary drive includes a rotor and a stator. The rotor magnetically driven without contact about an axial direction, and magnetically levitated without contact with respect to the stator. The rotor actively magnetically levitated in a radial plane and passively magnetically stabilized in the axial direction against tilting. The stator has coil cores, each including a longitudinal limb extending in the axial direction and a transverse limb arranged in the radial plane. The transverse limb extends from the longitudinal limb and is bounded by an end face. A concentrated winding is arranged on each of the longitudinal limbs surrounding a respective longitudinal limb. The end faces have a first distance in the radial direction from a first portion and a second distance in the radial direction from a second portion, the second distance greater than the first distance.

公开(公告)号：US20250158483A1

公开(公告)日：2025-05-15

申请号：US18931257

申请日：2024-10-30

Applicant: Levitronix GmbH

Inventor： Marcel STETTLER ,  Thomas SCHNEEBERGER ,  Natale BARLETTA ,  Patrick HINNI

IPC: H02K7/09 ,  F04D29/048

Abstract: A magnetic levitation includes a stator with coil cores, a concentrated winding provided at each longitudinal leg of the coil cores surrounding a respective longitudinal leg, the stator including a cup-shaped recess into which a rotor is configured to be inserted, magnetic field sensors to determine the position of the rotor arranged around the cup-shaped recess, and a ring-shaped holding device for the magnetic field sensors, the ring-shaped holding device having a cavity for each magnetic field sensor, the cavity delimited with respect to the radial direction by an inside wall and by an outside wall. The magnetic field sensors to be pushed into the cavity, and the cavity dimensioned such that the inside wall and the outside wall rest flat against the magnetic field sensors.

公开(公告)号：US20250154982A1

公开(公告)日：2025-05-15

申请号：US18931264

申请日：2024-10-30

Applicant: Levitronix GmbH

Inventor： Marcel STETTLER ,  Thomas SCHNEEBERGER ,  Natale BARLETTA ,  Patrick HINNI

IPC: F16C32/04

Abstract: A magnetic levitation device includes a housing, a stator and a controller. The stator includes coil cores having longitudinal and transverse legs and a winding at each longitudinal leg. The stator has a recess for the rotor. The controller includes a circuit board with front and back sides, with circuit breakers arranged on the front side. The housing includes an outer wall, a stator housing, a control housing, and a separating wall separating the stator housing from the control housing. A web is arranged on the separating wall adjacent to the outer wall, projecting into the control housing. The back side of the circuit board is supported on the web. The circuit breakers are arranged in an area with which the back side of the circuit board is supported on the web. The thermal connecting elements for dissipating heat are between the plurality of circuit breakers and the web.

公开(公告)号：US20250088073A1

公开(公告)日：2025-03-13

申请号：US18803108

申请日：2024-08-13

Applicant: Levitronix GmbH

Inventor： Marcel STETTLER

IPC: H02K7/09 ,  H02K1/18 ,  H02K7/14 ,  H02K11/30

Abstract: A magnetic levitation device includes a magnetically effective core and a stator including coil cores. Each coli core includes a longitudinal leg and a transverse leg at an end of the longitudinal leg. A concentrated winding surrounds each longitudinal leg. The stator has a cup-shaped recess to receive the rotor. The transverse legs are arranged around the cup-shaped recess. First and second holding device and a second holding device are connected to each other, The first holding device includes a bottom plate on which holding elements are provided, which extend in the axial direction and receive exactly one of the longitudinal legs. The second holding device receives the transverse legs.

公开(公告)号：US20240396399A1

公开(公告)日：2024-11-28

申请号：US18651566

申请日：2024-04-30

Applicant: Levitronix GmbH

Inventor： Marcel STETTLER ,  Daniel STEINERT ,  Natale BARLETTA

IPC: H02K5/08 ,  H02K3/32 ,  H02K9/22

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.

公开(公告)号：US20210079922A1

公开(公告)日：2021-03-18

申请号：US17000458

申请日：2020-08-24

Applicant: Levitronix GmbH

Inventor： Alexander SCHMID ,  Marcel STETTLER

IPC: F04D17/16 ,  F04D29/048

Abstract: A centrifugal pump for conveying a fluid, includes a pump housing, a rotor configured to convey the fluid disposed within the housing; and a stator which, together with the rotor, forms an electromagnetic rotary drive configured to rotate the rotor about an axial direction. The stator is a bearing and drive stator with which the rotor capable of being magnetically driven without contact and magnetically levitated without contact with respect to the stator. The rotor is passively magnetically levitated in the axial direction, and actively magnetically levitated in a radial plane perpendicular to the axial direction. The pump housing includes comprising a bottom and a cover, and the rotor is arranged in the pump housing between the bottom and the cover with respect to the axial direction. An indentation is disposed in the bottom or in the cover, the indentation being configured to generate a local turbulence.