Invention Grant
- Patent Title: Centrifugal pump assembly
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Application No.: US16980057Application Date: 2019-03-12
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Publication No.: US11460031B2Publication Date: 2022-10-04
- Inventor: Thomas Blad , Christian Blad , Peter Mønster
- Applicant: GRUNDFOS HOLDING A/S
- Applicant Address: DK Bjerringbro
- Assignee: GRUNDFOS HOLDING A/S
- Current Assignee: GRUNDFOS HOLDING A/S
- Current Assignee Address: DK Bjerringbro
- Agency: McGlew and Tuttle, P.C.
- Priority: EP18161524 20180313
- International Application: PCT/EP2019/056079 WO 20190312
- International Announcement: WO2019/175133 WO 20190919
- Main IPC: F04D15/00
- IPC: F04D15/00 ; F04D13/06 ; F04D29/48

Abstract:
A centrifugal pump assembly includes an electrical drive motor (2), with at least one impeller (18) which is driven by the motor and a pump casing (6) which surrounds the impeller (18) and which includes at least one suction connection (20) and at least two delivery connections (22, 24). A rotatable valve element (30, 30′, 30″) is arranged in the pump casing (6). The valve element is movable between at least two switching positions, in which the flow paths through the delivery connections (22, 24) are opened to a different extent. The valve element (30, 30′, 30″) includes an annular wall (32) which surrounds the impeller (18) and in which at least one switching opening (48) is formed. The valve element (30, 30′, 30″) is rotatably mounted about a rotation axis (X), which is centric to the annular wall (32), inside of the pump casing (6).
Public/Granted literature
- US20210003133A1 CENTRIFUGAL PUMP ASSEMBLY Public/Granted day:2021-01-07
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