公开(公告)号：US20180010609A1

公开(公告)日：2018-01-11

申请号：US15645036

申请日：2017-07-10

Applicant: Grundfos Holding A/S

Inventor： Olav JENSEN ,  Ole HANSEN ,  Bent DØSSING ,  Robert GREVE

IPC: F04D15/00 ,  F04D13/06 ,  F04D29/08 ,  F04D29/22

Abstract: A pump assembly includes pump casing (2), an impeller (14) rotatably arranged in the pump casing, a two rotation directions (A, B) electrical drive motor connected to drive the impeller and a valve arrangement (28) arranged in the pump casing to switch a flow path downstream of the impeller between two exits (24, 26) of the pump casing, depending on a rotation direction of the impeller. The valve arrangement includes a first movable valve element (34) at a first exit (24) and a second movable valve element (36) at a second exit (26). The first valve element partly closes the first exit in a closed position and is movable into an opened position by flow in the first rotation direction and the second valve element partly closes the second exit in a closed position and is movable into an opened position by flow in the second rotation direction (B).

公开(公告)号：US20230167826A1

公开(公告)日：2023-06-01

申请号：US17921696

申请日：2021-04-26

Applicant: GRUNDFOS HOLDING A/S

Inventor： Olav JENSEN ,  Bent DØSSING ,  Thomas BLAD ,  Peter MØNSTER ,  Ole HANSEN

IPC: F04D15/00 ,  F04D1/00 ,  F04D13/06 ,  F04D29/42 ,  F04D29/48 ,  F24D3/10 ,  F24D3/08

CPC classification number: F04D15/0016 ,  F04D1/006 ,  F04D13/06 ,  F04D29/4293 ,  F04D29/486 ,  F24D3/105 ,  F24D3/08

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′).

公开(公告)号：US20230194005A1

公开(公告)日：2023-06-22

申请号：US17921657

申请日：2021-04-26

Applicant: GRUNDFOS HOLDING A/S

Inventor： Olav JENSEN ,  Bent DØSSING ,  Thomas BLAD ,  Peter MØNSTER ,  Ole HANSEN

IPC: F16K11/074 ,  F04D15/00

CPC classification number: F16K11/074 ,  F04D15/0005

Abstract: A hydraulic valve device includes a first inlet port (20) and a second inlet port (22) and a valve element (24) for selectively closing one of the first and the second inlet port. The valve element (24; 24′) is rotatable between two valve positions such that a surface of the valve element is moved in a direction parallel to openings of the inlet ports. The valve element includes two separate sealing portions (72, 74), a first sealing portion (72) for closing the first inlet port and a second sealing portion (74) for closing the second inlet port. The two sealing portions are arranged such that in a first valve position a first sealing portion closes the first inlet port and in a second valve position a second sealing portion closes the second inlet port. A centrifugal pump device includes such hydraulic valve device.