Pump assembly
US11333151B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2018 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Nov 29, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24D3/105
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal pump assembly includes an electrical drive motor (4, 6), an impeller (14) which is driven by the drive motor and a pump casing (12) surrounds the impeller and including two branches (27, 32, 34). A movable valve element (18) is arranged in the pump casing and is movable between two switching positions, in which the flow paths through the two branches (27, 32, 34) are opened to a different extent. The valve element (18) is configured and arranged in the pump casing (12) such that it separates a suction chamber (24) which is connected to a suction side of the impeller (14) from a delivery chamber (26) which is in connection with the delivery side of the impeller (14). The valve element (18) is mechanically and/or hydraulically coupled to the drive motor (4, 6) for at least a movement between the two switching positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.