Magnetically levitated pump
US6575717B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/44
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pump portion is provided with an impeller internal to a casing. The impeller is coupled with a rotor physically out of contact therewith and it is also supported by a controlled, magnetic bearing portion physically out of contact therewith. The impeller is rotated by a motor to discharge fluid. A position sensor detects the impeller position in levitation and in response to the sensor's output the magnetic bearing portion is controlled. The magnetic bearing portion is configured of a plurality of electromagnets formed of a magnetic pole, a yoke and a coil. The electromagnet has magnetic S and N poles each with at least yoke and coil arranged circumferentially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.