公开(公告)号：US20150211528A1

公开(公告)日：2015-07-30

申请号：US14427359

申请日：2013-09-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Byskov Skafsgaard ,  Bent Døssing

IPC: F04D15/00 ,  F04D1/00 ,  F04D13/06

CPC classification number: F04D15/0005 ,  F04D1/00 ,  F04D13/06 ,  F04D15/0016 ,  F24D3/105 ,  F24D19/1012 ,  F24D19/1024 ,  F24D19/1066 ,  Y02B30/745

Abstract: A method controls a circulation pump (1) in an installation with at least two circulation circuits (3, 4), with which the circulation pump (1) is integrated by way of a switch-over valve (2) into the one or the other circulation circuit (3 or 4) depending on the switched position. The pump (1) is activated differently depending on the switched position of the switch-over valve (2). The switch-over procedure is detected by way of determining the pressure course and/or the flow rate course in the pump (1) or an electrical variable which is dependent thereon, of the motor driving the pump, and the pump (1) is operated in another manner accordingly.

Abstract translation: 一种方法控制具有至少两个循环回路（3,4）的设备中的循环泵（1），循环泵（1）通过该循环泵（1）通过切换阀（2）与其中的一个或 其他循环电路（3或4）取决于切换位置。 根据切换阀（2）的切换位置，泵（1）的运行方式不同。 通过确定泵（1）中的压力路线和/或流量路线或依赖于其的电动变量来检测切换过程，驱动泵的电机，泵（1）是 相应地以另一种方式操作。

公开(公告)号：US12180968B2

公开(公告)日：2024-12-31

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 ,  F24D3/08 ,  F24D3/10

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：US12158212B2

公开(公告)日：2024-12-03

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 ,  F16K3/08 ,  F24D3/10

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.

公开(公告)号：US10900490B2

公开(公告)日：2021-01-26

申请号：US14427359

申请日：2013-09-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Byskov Skafsgaard ,  Bent Døssing

IPC: F04D15/00 ,  F24D3/10 ,  F24D19/10 ,  F04D1/00 ,  F04D13/06

Abstract: A method controls a circulation pump (1) in an installation with at least two circulation circuits (3, 4), with which the circulation pump (1) is integrated by way of a switch-over valve (2) into the one or the other circulation circuit (3 or 4) depending on the switched position. The pump (1) is activated differently depending on the switched position of the switch-over valve (2). The switch-over procedure is detected by way of determining the pressure course and/or the flow rate course in the pump (1) or an electrical variable which is dependent thereon, of the motor driving the pump, and the pump (1) is operated in another manner accordingly.

公开(公告)号：US10514038B2

公开(公告)日：2019-12-24

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 ,  F24D3/10 ,  F04D29/48 ,  F04D13/06 ,  F04D29/08 ,  F04D29/22 ,  F04D29/42

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).