公开(公告)号：US11512712B2

公开(公告)日：2022-11-29

申请号：US16493177

申请日：2018-03-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad ,  Peter Mønster

IPC: F04D15/00 ,  F04D29/42 ,  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：US11371509B2

公开(公告)日：2022-06-28

申请号：US16490129

申请日：2018-02-26

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad

IPC: F04D13/06 ,  F04D13/12 ,  F04D15/00 ,  F04D15/02

Abstract: A circulation pump assembly (22) includes an electrical drive motor (10) and an electronic control device (12) controlling the drive motor (10). The control device (12) is configured for the speed control of the drive motor (10) according to a control schema (I, II, III). The control device (12) includes a detection function (42) which is configured to detect a condition variable representing an operating condition, from a parallel flow path (16, 18, 20) with a second circulation pump assembly (22). The control device (12) is also configured such that it can change the control schema (I, II, III) on the basis of a condition variable detected by the detection function (42). Further an arrangement of at least two such circulation pump assemblies (22) and a method for the control of such two circulation pump assemblies (22) are provided.

公开(公告)号：US11073161B2

公开(公告)日：2021-07-27

申请号：US16493125

申请日：2018-03-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad ,  Christian Blad

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

Abstract: A hydraulic construction unit includes a centrifugal pump assembly which includes an electrical drive motor and at least one impeller which is driven by the electric drive motor. At least one valve element is arranged such that the valve element is movable by way of a fluid flow which is created by the impeller. At least one section of a wall delimits a flow path in the hydraulic construction unit and is configured to be movable as a moveable section. The movable section of the wall is part of the valve element or is connected to the valve element for movement. The movable section is movable so as to be at least partly effected by friction forces of a fluid flow which runs along the wall.

公开(公告)号：US10801737B2

公开(公告)日：2020-10-13

申请号：US15028576

申请日：2014-10-08

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad

IPC: F24D19/10 ,  F04D15/00 ,  G05D23/19

Abstract: A method for adapting the control of the feed temperature of a heating installation to a building to be heated or at least to a building part to be heated, with which the heating installation supplies the building or the building part with heat by way of a heat transfer medium led in the circuit. The circuit comprises at least one temperature-controlled heating circuit. The flow rate of the heat transfer medium in the circuit is registered in a continuous manner or in temporal intervals. The adaptation of the control of the feed temperature is effected automatically in dependence on the registered values.

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：US11460031B2

公开(公告)日：2022-10-04

申请号：US16980057

申请日：2019-03-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad ,  Christian Blad ,  Peter Mønster

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).

公开(公告)号：US11333151B2

公开(公告)日：2022-05-17

申请号：US16492795

申请日：2018-03-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad

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

Abstract: A centrifugal pump assembly includes an electrical drive motor (4, 6), an impeller (14) which is driven by the drive motor and a pump casing (12) surrounds the impeller and including two branches (27, 32, 34). A movable valve element (18) is arranged in the pump casing and is movable between two switching positions, in which the flow paths through the two branches (27, 32, 34) are opened to a different extent. The valve element (18) is configured and arranged in the pump casing (12) such that it separates a suction chamber (24) which is connected to a suction side of the impeller (14) from a delivery chamber (26) which is in connection with the delivery side of the impeller (14). The valve element (18) is mechanically and/or hydraulically coupled to the drive motor (4, 6) for at least a movement between the two switching positions.

公开(公告)号：US10830458B2

公开(公告)日：2020-11-10

申请号：US15765346

申请日：2016-09-30

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad

IPC: F24D19/10 ,  F16K11/048 ,  F24D3/10 ,  F16K41/10 ,  F16K1/12 ,  F24D3/02

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：US10539143B2

公开(公告)日：2020-01-21

申请号：US14392325

申请日：2014-06-25

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad

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

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.