Magnetic bearing, drive device equipped with the same, and pump
US11876431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2020 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | May 25, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2316/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetic bearing contactlessly supporting a rotor by magnetic force includes: a bearing rotor member made of a magnetic material; and a bearing stator member arranged around bearing rotor member. The bearing stator member includes a core made of a magnetic material and a coil wound around the core. A longitudinal cross-sectional shape of the core has a first part extending in a first direction orthogonal to a direction opposed to the bearing rotor member and wound around with the coil, a pair of second parts extending from both end portions in the first direction of first part to the bearing rotor member side and subsequently extending in a direction approaching each other in the first direction, and a pair of third parts extending from respective distal end portions of the pair of second parts toward the bearing rotor member side. The bearing rotor member also includes a permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.