公开(公告)号：US20200158351A1

公开(公告)日：2020-05-21

申请号：US16635898

申请日：2018-08-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Christian BLAD

IPC: F24D19/10 ,  F24D3/10 ,  F24D3/16 ,  F04D15/00 ,  F04D29/42

Abstract: A mixing device includes a first inlet (84) and a second inlet (86) inlet and an outlet (80). The first inlet (84) is connected to the outlet (80) via a first flow connection and the second inlet (86) is connected to the outlet (80) via a second flow connection. A circulation pump assembly (24; 46) includes an electric drive motor (30), a control device (34), for controlling the speed of the drive motor (30), and at least one impeller (68; 100) driven by the drive motor. The at least one impeller (68; 100) is positioned in the first flow connection. The flow connections are configured such that at least one hydraulic pressure generated by the impeller (68; 100) in the first flow connection acts as hydraulic resistance in the second flow connection.

公开(公告)号：US20180283559A1

公开(公告)日：2018-10-04

申请号：US15765336

申请日：2016-09-30

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD

IPC: F16K1/12 ,  F16K11/048 ,  F16K41/10 ,  F24D19/10 ,  F24D3/10

Abstract: A method switches a switching device (4) between two switch positions in a hydraulic system. The hydraulic system apart from the switching device (4) includes a pump assembly (2). The pump assembly (2) can assume at least two different operating conditions. A switching-over of the switching device (4) is initiated by the pump assembly (2) via the hydraulic system. The switch positions of the switching device (4) are reached depending on a stay duration of the pump assembly (2) in at least one of the two operating conditions. Further, a hydraulic system for carrying out the method is provided.

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：US20200072238A1

公开(公告)日：2020-03-05

申请号：US16493177

申请日：2018-03-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Peter MØNSTER

IPC: F04D29/42 ,  F04D15/00 ,  F04D29/16 ,  F04D29/48 ,  F04D29/70

Abstract: A pump assembly includes at least one rotatingly driven impeller (14) and at least one valve element (18) which is rotatable about a rotation axis (X) between at least two switching positions. The valve element (18) includes a first face side (22) which extends transversely to the rotation axis of the valve element. A suction opening (24), which is engaged with a suction port (26) of the impeller (14), is formed in this first face side in a central region. The first face side (22) includes a pressure surface which surrounds the suction opening (24) and is adjacent to a delivery chamber (28) which surrounds the impeller (14).

公开(公告)号：US20200018491A1

公开(公告)日：2020-01-16

申请号：US16483999

申请日：2018-01-31

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Peter MØNSTER

IPC: F24D19/10 ,  F24H9/14 ,  F24D3/02

Abstract: A hydraulic construction unit for a heating facility or air-conditioning facility, includes a return connection (20) and a first feed connection (16) for a heating circuit (6), with a heat source outlet (12) fluid conducting connected to the return connection. A heat source inlet (14) is fluid conducting connected to the first feed connection and to a circulation pump assembly (28) in a flow path between the return connection and the heat source outlet (12) or in a flow path between the heat source inlet and the first feed connection. A second feed connection (18) for a second heating circuit (8), is fluid conducting connected to the heat source inlet and to the return connection. A mixing valve (54) is arranged in a flow path from the heat source inlet to the second feed connection and/or in a flow path from the return connection to the second feed connection.

公开(公告)号：US20180283702A1

公开(公告)日：2018-10-04

申请号：US15765346

申请日：2016-09-30

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD

IPC: F24D19/10 ,  F24D3/10 ,  F16K1/12 ,  F16K41/10 ,  F16K11/048

Abstract: A hydraulic system includes at least one pump assembly and a switching device which includes at least two switch positions. The switching device is configured such that on operation of the pump assembly in a first operating condition, the switching device is held in a stable manner in each of the at least two switch positions in each case by the hydraulic forces in the system. In a second operating condition of the pump assembly, the switching device is moved from a first switch position into a second switch position, assisted by switching energy stored in the first operating condition. The hydraulic system is configured such that in the first operating condition, the switching energy is stored independently of a switching-over of the switching device between the switch positions. A method is provided for operating such a hydraulic system.

公开(公告)号：US20160273543A1

公开(公告)日：2016-09-22

申请号：US14392325

申请日：2014-06-25

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD

IPC: F04D29/042 ,  F04D15/00 ,  F04D29/42 ,  F04D13/06

Abstract: A pump assembly (2) includes an electric drive motor (14) and with at least one impeller (18) which is driven by the motor. The impeller is movable in an axial direction (X) between at least one first and one second position. The impeller in the first axial position is situated in a first flow path through the pump assembly and delivers a fluid through this first flow path. The impeller in the second position is situated in a second flow path through the pump assembly and delivers a fluid through this second flow path. The pump assembly (2) is configured such that a movement of the impeller (18), between the first and the second position at least in one direction, is effected by a hydraulic force which acts on the impeller (18) and is produced by the delivered fluid. A heating installation is provided with such a pump assembly.

Abstract translation: 泵组件（2）包括电驱动马达（14）和至少一个由马达驱动的叶轮（18）。 叶轮可以在至少一个第一和第二位置之间的轴向（X）上移动。 在第一轴向位置的叶轮位于通过泵组件的第一流动路径中，并且通过该第一流动路径输送流体。 位于第二位置的叶轮位于通过泵组件的第二流动路径中并且通过该第二流动路径输送流体。 泵组件（2）构造成使得叶轮（18）在第一和第二位置之间至少在一个方向上的运动通过作用在叶轮（18）上的液压力来实现，并且由叶轮 输送的液体。 一个加热装置设有这样一个泵组件。

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.

公开(公告)号：US20210140435A1

公开(公告)日：2021-05-13

申请号：US16492717

申请日：2018-03-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD

IPC: F04D13/06 ,  F04D29/42

Abstract: A pump assembly includes an electric drive motor (4, 6), an impeller, driven by the drive motor (4, 6), and a valve device (18) situated in a flow path through the pump assembly, which is movable between a first and a second switching position. The valve device (18) is coupled to the drive motor via a first coupling such that a movement of the drive motor (4, 6) is transmitted onto the valve device (18) and the valve device is movable from the first into the second switching position by rotation movement of the drive motor. The first coupling is releasable by way of increasing the speed of the drive motor (4, 6) and/or increasing the pressure at the outlet side of the impeller and/or by way of slip, such that the coupling between the drive motor (4, 6) and the valve device (18) is reduced or lifted.

公开(公告)号：US20210010477A1

公开(公告)日：2021-01-14

申请号：US16980023

申请日：2019-03-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Christian BLAD ,  Peter MØNSTER

IPC: F04D15/00 ,  F04D29/02

Abstract: A centrifugal pump assembly includes an electric drive motor (6, 8), a driven impeller (14) and a pump casing (2) which surrounds the impeller (14). A movable element (24; 24′) is arranged a valve element. A section of the valve element is movable from a released position into a bearing position, fixed on a contact surface (60), by pressure which is produced by the impeller in the pump casing. A control device (64) moves the valve element from one switching position into another switching position and reduces the speed of the drive motor. Upon pressure in the pump casing dropping such that the valve element is no longer fixed on the contact surface and the valve element has been moved into the other switching position, the control device increases the speed of the drive motor again. A method for moving a valve element is provided.