Centrifugal pump assembly
AssigneeGrundfos Holding A/S
InventorsOlav Jensen, Bent Døssing, Thomas Blad, Peter Mønster, Ole Hansen
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Abstract
The invention relates to a centrifugal pump assembly having an electric drive motor (2), at least one impeller (14) driven by said electric drive motor (2) and a valve element (24; 24′) rotatable between two 5 valve positions driven by a fluid flow produced by said impeller (14), wherein the valve element (24; 24′) has a cover plate (104; 104′) extending transverse to the rotational axis (X) of the impeller (14) and facing the impeller (14), wherein the valve element (24; 24′) having protrusions (102, 102′) arranged on an outer surface side facing away 10 from the impeller (14) such that a flow can act on them for driving the valve element (24; 24′).
Claims20
A centrifugal pump assembly, the assembly comprising:
- an electric drive motor;
- at least one impeller driven by said electric drive motor;
- and
- a valve element rotatable between two valve positions driven by a fluid flow produced by said impeller, wherein the valve element comprises a cover plate extending transverse to the rotational axis of the impeller and facing the impeller, wherein the valve element comprises protrusions extending radially from an outer circumference of the valve element and the protrusions being arranged on an outer surface side facing away from the impeller such that a flow can act on the protrusions for driving the valve element to rotate the valve element about a rotational axis of the valve element.
A centrifugal pump assembly, the assembly comprising:
- an electric drive motor;
- at least one impeller driven by said electric drive motor;
- and
- a valve element rotatable between two valve positions driven by a fluid flow produced by said impeller, wherein the valve element comprises a cover plate extending transverse to the rotational axis of the impeller and facing the impeller, wherein the valve element comprises a valve element side facing in a direction away from the impeller, the valve element side comprising a circumferential outer surface, the valve element further comprising a plurality of protrusions extending radially outward from the circumferential outer surface, wherein the plurality of protrusions are configured to contact a flow of fluid such that the valve element rotates about a rotational axis of the valve element.
Dependencies are inferred from the claim text.