Rotary pump with axially displaceable, closeable rotor
US10539142B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2014 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Dec 12, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/64
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal pump assembly has an electric drive motor (2) and at least one impeller (10; 10′), which is movable in an axial direction (X) between at least two functional positions. In one functional position a flow path through the impeller (10; 10′) is essentially closed and in another functional position the flow path through the impeller (10; 10′) is opened. The impeller (10; 10′) in a first functional position is held by a magnetic force (FM) or a spring force and in a second functional position is held by a hydraulic force (FH) produced by a delivered fluid. An impeller is provided for the centrifugal pump assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.