公开(公告)号：US11085462B2

公开(公告)日：2021-08-10

申请号：US16711923

申请日：2019-12-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Bundesen Svarre ,  Jan Plougmann ,  Therkel Damm ,  Jan Carøe Aarestrup ,  Klaus Vestergaard Kragelund ,  Morten Liengaard Svarre

IPC: F04D29/62 ,  F04D29/043 ,  F04D29/42 ,  F04D13/06 ,  F04D25/06 ,  F04D29/12 ,  F04D29/046

Abstract: A pump assembly (1) includes a rotor axle (45) extending along a rotor axis (R), an impeller (12) fixed to the rotor axle (45), a pump housing (11) accommodating the impeller (12), and a drive motor including a stator (17) and a rotor (51). The rotor (51) is fixed to the rotor axle (45) for driving the impeller (12). A rotor can (57) accommodates the rotor (51). The rotor can (57) include a rotor can flange (63). A stator housing (13) accommodates the stator (17). The stator housing (13) is secured to the pump housing (11) by a bayonet ring (113). The bayonet ring (113) is resiliently spring-loaded for axially biasing the stator housing (13) towards the impeller (12) against the pump housing (11).

公开(公告)号：US11085437B2

公开(公告)日：2021-08-10

申请号：US14826631

申请日：2015-08-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Brian Kongsgaard Nielsen ,  Carsten Skovmose Kallesøe

IPC: F04B49/06 ,  F04D15/00 ,  F04B49/20

Abstract: A control method for a pump assembly (10, 12) in a pneumatic or hydraulic system controls a speed (n) of the pump assembly (10, 12) in dependence on at least one variable (Dp, p, T, xp) which is detected in the system. An error signal (e) is produced from the detected variable (Dp, p, T, xp) on the basis of a sectionwise monotonic function. On the basis of the error signal, the speed (n) of the pump assembly (10, 12) is controlled.

公开(公告)号：US11054150B2

公开(公告)日：2021-07-06

申请号：US15034672

申请日：2014-10-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Baasch Sørensen ,  Martin Clausen

IPC: F24D19/10 ,  G05B9/02 ,  F24D3/02 ,  G01F1/34

Abstract: A diagnosis method for the diagnosis of the correct function of a heating and/or cooling system with at least one load circuit (6), through which a fluid flows as a heat transfer medium. For the diagnosis an opening degree (Vpos,n) of the load circuit (6) is changed for changing the flow. Subsequently a differential pressure (Hpu) across the load circuit (6) and/or a volume flow of a fluid flowing through the load circuit (6) is detected and the detected values, or at least a value derived from the detected values, are/is compared to at least one predefined system limit value.

公开(公告)号：US20210203201A1

公开(公告)日：2021-07-01

申请号：US17133530

申请日：2020-12-23

Applicant: Grundfos Holding A/S

Inventor： Allan Ivo Søgaard Sørensen

IPC: H02K1/30 ,  H02K1/27

Abstract: A cylindrical mounting sleeve suitable for mounting a rotor assembly on a shaft, said cylindrical mounting sleeve comprising a hollow cylindrical portion having a length L and an inner surface with a radius R, said cylindrical mounting sleeve further comprising at least one elongated protrusion formed on the inner surface, the elongated protrusion having a height H. The path of the elongated protrusion forms an angle A to the longitudinal centre axis of the hollow cylindrical portion, said angle A being greater than 5 degrees and less than 70 degrees. In this way, a mounting sleeve is provided which reduces the damage during mounting of the sleeve on the shaft. This reduces imbalance in the rotor assembly. The invention also relates to a rotor assembly comprising such a cylindrical mounting sleeve.

公开(公告)号：US20210164664A1

公开(公告)日：2021-06-03

申请号：US16635702

申请日：2018-08-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Christian BLAD

IPC: F24D19/10 ,  F24D3/10

Abstract: The invention relates to a method for the operation of a mixing device in a heating facility, in which mixing device two heating medium flows of different temperatures are mixed for adjusting the temperature of the heating medium, wherein the mixing device comprises at least one circulation pump assembly (24; 46) which delivers the heating medium, wherein the at least one circulation pump assembly (24; 46) is regulated in its speed in dependence on a temperature value which is detected in the heating medium, as well as to a mixing device for mixing the heating medium flows.

公开(公告)号：US20210157292A1

公开(公告)日：2021-05-27

申请号：US17100527

申请日：2020-11-20

Applicant: Grundfos Holding A/S

Inventor： Jan Balle Larsen ,  Poul Ejlertsen ,  Nicolai Bæk Thomasen

IPC: G05B19/042 ,  G06Q50/06

Abstract: A computer-implemented method for controlling one or more components of a water utility system, the water utility system comprising at least one pump assembly, the method comprising: receiving a user indication indicative of a user-perceived acoustic-noise induced discomfort experienced at least at a first location, measuring at least a first sound signal at said first location, determining, based on the measured first sound signal and based on at least one of a received user indication of a degree of the user-perceived acoustic-noise induced discomfort and a received first operational parameter of the pump assembly, the first operational parameter being representative of an operational condition of the pump assembly at the time of said measuring the first sound signal, one or more adjusted control parameters of the water utility system, and controlling the water utility system based on the determined adjusted control parameters.

公开(公告)号：US20210155513A1

公开(公告)日：2021-05-27

申请号：US17100757

申请日：2020-11-20

Applicant: Grundfos Holding A/S

Inventor： Bruno Kiilerich ,  Martin Hørlück Lyngsø

IPC: C02F1/68

Abstract: The present invention relates to a system and a method for abating the presence of a selected chemical substance in wastewater flowing in a wastewater channel system from an upstream position to a downstream position. The method typically comprising dosing into the wastewater, at the upstream position, chemical agent(s) adapted to abate the presence of said selected chemical substance, wherein the dosing is in an amount set by a dosing set-point, and adjusting the dosing set-point based on determinations of the concentration of the selected chemical substance at the downstream position. The invention involves comparison between a determined concentration and a pre-selected fractile and adjusting a dosing set-point based thereon.

公开(公告)号：US20210148739A1

公开(公告)日：2021-05-20

申请号：US17098100

申请日：2020-11-13

Applicant: Grundfos Holding A/S

Inventor： Peter Elvekjær ,  Jesper Thørring Jensen ,  Carsten Christensen

IPC: G01F1/05 ,  G06N3/08 ,  F04D25/06 ,  F04D1/00

Abstract: Computer-implemented methods are disclosed for determining a flow rate of fluid flow at a target time through a pump, such as a centrifugal pump, the pump being driven by a pump motor. An illustrative method includes, in some aspects: receiving at least one set of previous parameter values including a first previous parameter value indicative of a first operational parameter of the pump motor at a previous time, earlier than the target time, and a second previous parameter value indicative of a second operational parameter of the pump motor at the previous time, and receiving a current set of parameter values including a first current parameter value indicative of the first operational parameter of the pump motor at the target time and a second current parameter value indicative of the second operational parameter of the pump motor at the target time.

公开(公告)号：US20210080018A1

公开(公告)日：2021-03-18

申请号：US17017935

申请日：2020-09-11

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN

IPC: F16K15/18 ,  F04B53/10 ,  F16K15/02 ,  F16K27/02

Abstract: A valve system (13), connectable to a pump system (1), includes a pump assembly (3) connectable to a pipe (5), wherein the valve system (13) includes a valve (15) including a pipe section (39), of the pipe (5), that defines a primary flow direction (19), and a valve opening (41) in the pipe section, a valve seat (43) and a valve body (45). The valve opening (41), the valve seat (43) and the valve body (45) define a common valve axis (47) extending transversely to the primary flow direction. An operating element (49), arranged at the pipe section opposite the valve opening, is configured to control the valve body for operating in a check-valve mode to open the valve opening upon a fluid flow from the valve opening towards the valve body and for operating in a shut off-valve to close the valve opening for any fluid flow direction.

公开(公告)号：US20210055003A1

公开(公告)日：2021-02-25

申请号：US16997651

申请日：2020-08-19

Applicant: GRUNDFOS HOLDING A/S

Inventor： Gert Friis ERIKSEN

IPC: F24D3/00 ,  F24S10/00 ,  F24S80/00 ,  F04D7/00 ,  F04D29/00

Abstract: A pump (2) system includes a pump, a sensor (22; 28) arranged in or at a flow path (14), and a concentration measurement device measuring a concentration in liquid inside the flow path (14). The concentration measurement device includes the sensor (22; 28), as a concentration sensor, connected to an evaluation device (26) for evaluating readings of the sensor (22; 28). The evaluation device (26) is connected to a further signal source (20; 24), providing at least one further parameter, and is configured to carry out an evaluation of the reading of the sensor (22; 28), taking into account the further parameter provided by the further signal source (20, 24) to output the concentration in the liquid. A solar heating system includes the pump system.