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：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.