公开(公告)号：US20210297810A1

公开(公告)日：2021-09-23

申请号：US16473466

申请日：2017-12-06

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming MUNK ,  Casper Lyngesen MOGENSEN ,  Jacob HANSEN

IPC: H04W4/029 ,  H04W4/021 ,  H04W4/02 ,  H04W12/06 ,  H04W84/12 ,  F04D15/00 ,  H04W64/00 ,  H04W48/04

Abstract: A method for authorizing a data communication between an electronically controlled pump assembly (1) and an operating device (12), configured for wireless communication with the pump assembly (1), operating using an external server (10) connected to a data network. The method includes transferring the installation location data (GPS 1) of the pump assembly (1) to the server (10) via the data network. An identification code of the operating device (12) and the location data (GPS 2+3) of the operating device (12) are then transferred to the server via the data network. On the server side, it is examined whether the operating device (12) is envisaged for data communication with the pump assembly (1), and whether the operating device (12) is located in a predefined spatial region (A) to the pump assembly (1). Subsequently a data communication is enabled or blocked, for a time.

公开(公告)号：US11118577B2

公开(公告)日：2021-09-14

申请号：US16503047

申请日：2019-07-03

Applicant: GRUNDFOS HOLDING A/S

Inventor： Sergei Gerz ,  Valeri Kechler

IPC: F04B43/04 ,  F04B13/00 ,  F04B49/06

Abstract: A Metering pump includes a displacement element (4), a drive system with an electric drive motor (12) driving the displacement element (4) and a control device (22) controlling the electric drive motor (12). The control device (22) is configured in such a manner that it detects the current position of the displacement element (4), detects the torque (M) of the electric drive motor (12) at several positions of the displacement element (4) and monitors the torque (M) in relation to the position of the displacement element (4), and a method for controlling such metering pump.

公开(公告)号：US11117821B2

公开(公告)日：2021-09-14

申请号：US16462781

申请日：2017-11-28

Applicant: Grundfos Holding A/S

Inventor： Dominik Marek Dominiak ,  Tom Jæger

IPC: C02F9/00 ,  C02F11/121 ,  C02F11/123 ,  C02F11/127 ,  C02F1/00 ,  C02F1/38 ,  C02F3/12 ,  C02F3/20 ,  C02F11/12 ,  C02F1/44

Abstract: The present invention relates to a process and device for selectively removal of deflocculated sludge below a pre-selected size from a sludge mixed liquor. The invention resides in the concept of removing from the sludge mixed liquor deflocculated sludge. The removal is preferably carried out by a two-step separation providing a fraction comprising sludge flocs, substantially freed from deflocculated sludge, and a fraction containing mostly deflocculated sludge. The fraction comprising sludge flocs is returned into the sludge mixed liquor, while the fraction containing mostly deflocculated sludge is removed from the system.

公开(公告)号：US20210273546A1

公开(公告)日：2021-09-02

申请号：US17255069

申请日：2019-06-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Buus BENDIXEN ,  Alexandru SOREA ,  Tanja JOHNSEN

IPC: H02K49/10 ,  F03B13/18 ,  H02K7/18

Abstract: The present disclosure refers to a magnetic rack-and-pinion coupling system (1) for contactless transfer of kinetic energy comprising: a rack component (3) comprising a first pattern of ferromagnetic structure being repetitive along a rack length axis (L), and a pinion stack component (5) being rotatable about a rotor axis (R), wherein the rack component (3) and/or the pinion stack component (5) are movable relative to each other along the rack length axis (L), and wherein the pinion stack component (5) comprises a stack of pinion discs (9a,b,c,d) each comprising a second pattern of ferromagnetic structure being repetitive along a circumference of the respective pinion disc (9a,b,c,d), wherein at least one magnetic field producing element (13a,b,c) is sandwiched between neighbouring pinion discs (9a,b,c,d), wherein each magnetic field producing element (13a,b,c) has one magnetic pole (N, S) at an axial front side (14) of the magnetic field producing element (13a,b,c) and the other magnetic pole (S, N) at an axial end side (16) of the magnetic field producing element (13a,b,c).

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：US20210187506A1

公开(公告)日：2021-06-24

申请号：US17123537

申请日：2020-12-16

Applicant: Grundfos Holding A/S

Inventor： Patrick HENSEL ,  Till HENSGEN ,  Frank THEILE

IPC: B01L3/00 ,  B01J19/00

Abstract: A device and method for producing a fluid product, such as a fluid reaction product, are provided. The device includes a reaction chamber and a reception chamber and a control unit configured to control the flow of fluid into the reaction chamber through the one or more fluid connections. The device also includes a first and second amount sensor arranged to determine an amount of fluidic component(s) of the reaction chamber and reception chamber continuously or at least quasi-continuously at least during the introduction of fluidic component(s).

公开(公告)号：US20210180613A1

公开(公告)日：2021-06-17

申请号：US17255042

申请日：2019-06-19

Applicant: GRUNDFOS HOLDING A/S

Inventor： Brian LUNDSTED POULSEN ,  Nielas WINTHER LAUE

IPC: F04D29/62 ,  F04D1/06

Abstract: The present disclosure refers to a pump (1) comprising a rotor shaft (13) extending along a rotor axis (R), a bearing body (19) circumferentially encompassing the rotor shaft (13) and comprising a radially outer bearing surface (32), and a locking ring (25) circumferentially encompassing the rotor shaft (13) and limiting an axial movement of the bearing body (19) relative to the rotor shaft (13), wherein the locking ring (25) comprises at least two radially inwardly protruding teeth (49, 51, 53, 55), wherein the locking ring (25) is radially expandable from a locking state to a mounting state against an elastic restoring force of the locking ring (25), wherein the locking ring (25) is, in the mounting state, positionable at a desired axial position on the rotor shaft (13), wherein the teeth (49, 51, 53, 55) are configured to press, in the locking state, against a radial outer surface (31) of the rotor shaft (13) by the elastic restoring force of the locking ring (25).

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：US10989199B2

公开(公告)日：2021-04-27

申请号：US16017116

申请日：2018-06-25

Applicant: GRUNDFOS HOLDING A/S

Inventor： Lars Østergaard ,  Brian Nonbo Jensen

IPC: F04D13/10 ,  F04D29/40 ,  F04D29/60 ,  E21B43/12 ,  E21B41/00

Abstract: A submersible downhole pump (1) includes an elongate pump unit (3) defining a longitudinal pump axis (L) and a pump unit diameter (D), and at least one cable lug (13) for attaching a cable. The at least one cable lug (13) is connected to the pump unit (3) and pivotable around a pivot axis (P) perpendicular to the longitudinal axis (L) between a defined first position and a defined second position. The at least one cable lug (13) is positioned, in the first position, fully within the pump unit diameter (D). In the second position, the at least one cable lug (13) is positioned at least partially protruding outside the pump unit diameter (D).

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.