公开(公告)号：US20250075703A1

公开(公告)日：2025-03-06

申请号：US18806340

申请日：2024-08-15

Applicant: Levitronix GmbH

Inventor： Rennan HU ,  Urs WILLI ,  Alexander SCHMID ,  Natale BARLETTA

IPC: F04D13/06 ,  F04D1/00

Abstract: A pump unit includes a pump housing and a rotor in the pump housing. The pump unit contactless magnetic levitating and driving the rotor. The pump housing has a bottom part and a cover, the bottom part having a cylindrical cup to receive the rotor and a substantially ring-shaped first sealing surface for a sealing interaction with the cover. The cover has a substantially ring-shaped second sealing surface for a sealing interaction with the first sealing surface. One of the first and second sealing surfaces is a ribbed surface with a radial sealing rib, which extends in the circumferential direction along the entire sealing surface, while the other of the first and second sealing surfaces is a smooth surface.

公开(公告)号：US20240328423A1

公开(公告)日：2024-10-03

申请号：US18607200

申请日：2024-03-15

Applicant: Levitronix GmbH

Inventor： Urs WILLI ,  Mario HÄFLIGER ,  Natale BARLETTA

IPC: F04D13/06 ,  F04D1/00 ,  H02K1/14 ,  H02K1/2733 ,  H02K9/19

CPC classification number: F04D13/06 ,  F04D1/00 ,  H02K1/146 ,  H02K1/2733 ,  H02K9/19 ,  H02K2201/18

Abstract: An electromagnetic rotary drive includes a rotor having a magnetically effective core, and a stator, with which the rotor can be magnetically driven without contact and magnetically levitated without contact with respect to the stator. The rotor is actively magnetically levitated in a radial plane perpendicular to the axial direction. The stator has coil cores including a leg extending from a first end to a second end, and a transverse leg at the second end and extending from the longitudinal leg in a radial direction. The coil cores are arranged around the magnetically effective core with respect to a circumferential direction, and a concentrated winding surrounds each longitudinal leg. A cooling device includes a cooling conduit for cooling fluid. The cooling conduit has a section arranged in the circumferential direction in an interspace between the longitudinal leg of two coil cores.