公开(公告)号：US20190017513A1

公开(公告)日：2019-01-17

申请号：US16034923

申请日：2018-07-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Casper HILLERUP LYHNE

IPC: F04D15/00 ,  F04D13/14 ,  F04D15/02 ,  F04D1/04 ,  G05B15/02 ,  G06F17/14

Abstract: A multi-pump control system includes a control module, a processing module, a communication interface, and a storage module. The control module is configured to run a zero flow configuration cycle by either ramping up the speed of at least one pump in addition to a subset j of i pumps of a multi-pump system until the communication interface receives a signal change indicative of the at least one pump starting to contribute to the total flow, wherein the processing module is configured to determine an approximated pump characteristic or power consumption or ramping down the speed of at least one pump of a subset j of i pumps of a multi-pump system until the communication interface receives a signal change indicative of the at least one pump stopping to contribute to the total flow, wherein the processing module is configured to determine an approximated pump characteristic and/or power consumption.

公开(公告)号：US20190017511A1

公开(公告)日：2019-01-17

申请号：US16034820

申请日：2018-07-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Casper HILLERUP LYHNE

IPC: F04D15/00 ,  F04D13/14 ,  F04D15/02 ,  F04D1/04 ,  G05B15/02 ,  G06F17/14

Abstract: A multi-pump control system includes a processing module, a communication interface, a storage module and a control module configured to ramp up a speed of k pumps in addition to a subset j of i pumps of a system comprising N pumps running at a speed ωj providing a total head Δp, wherein N≥2, 1≤k

公开(公告)号：US20190004499A1

公开(公告)日：2019-01-03

申请号：US16021935

申请日：2018-06-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Carsten Skovmose KALLESØE

IPC: G05B19/416

Abstract: A model formation module (25) is provided for creating a model for controlling a pressure regulating system (7) of a water supply network (5), wherein the water supply network (5) is equipped with one or more pressure sensors of which at least one remote pressure sensor (17a,b) is arranged remotely from the pressure regulating system (7), the model formation module (25) being configured to communicate with the at least one remote pressure sensor (17a,b). The model formation module (25) is configured to create said model without a measured, determined or estimated flow value on the basis of at least one remote pressure value determined by the at least one remote pressure sensor (17a,b) and on the basis of at least one load-dependent variable of the pressure regulating system (7), said model representing at least one pressure control curve for controlling the pressure regulating system (7).

公开(公告)号：US20180287542A1

公开(公告)日：2018-10-04

申请号：US15938302

申请日：2018-03-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Klaus VESTERGAARD KRAGELUND ,  Jan PLOUGMANN ,  Jan CARØE AARESTRUP

IPC: H02P27/04 ,  H02P27/08 ,  F04D13/06 ,  F04D15/00

CPC classification number: H02P27/047 ,  F04D13/06 ,  F04D13/0606 ,  F04D15/0066 ,  H02P27/06 ,  H02P27/08

Abstract: A pump assembly (1) includes a pump unit (2), an electrical drive motor (203) for driving the pump unit (2), and a control unit (201) for controlling the drive motor (203). The control unit (201) includes a frequency converter (209), a voltage converter (207) and a controller (211). The voltage converter (207) is configured to provide an input voltage (Uin) to the frequency converter (209). The input voltage (Uin) is adjustable within a voltage range between a minimum input voltage (Umin) and a maximum input voltage (Umax). The controller (211) is configured to determine an actual power consumption of at least one of the drive motor (203), the frequency converter (209) and the voltage converter (207) during operation of the pump unit (2). The controller (211) is further configured to tune the input voltage (Uin) depending on the determined actual power consumption during operation of the pump unit (2).

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：US20180283383A1

公开(公告)日：2018-10-04

申请号：US15940048

申请日：2018-03-29

Applicant: GRUNDFOS HOLDING A/S

Inventor： Klaus VESTERGAARD KRAGELUND ,  Jan PLOUGMANN ,  Jan CARØE AARESTRUP

IPC: F04D13/06 ,  F04D29/42 ,  F04D29/12

Abstract: A pump assembly (1) includes an impeller (12) with a rotor axis (R), a pump housing (11) accommodating the impeller (12), a drive motor with a stator (14) and a rotor (51) for driving the impeller (12). A rotor can (57) accommodates the rotor (51), and a stator housing (13) accommodates the stator (14). The rotor can (57) includes a rotor can flange (63) having a lateral rotor can flange face (87) fitting within a peripheral wall (69) of the pump housing (11). The lateral rotor can flange face (87) has at least three radial projections (91) abutting against the peripheral wall (69) of the pump housing (11) and centering the rotor can (57) with respect to the peripheral wall (69) of the pump housing (11).

公开(公告)号：US20180212500A1

公开(公告)日：2018-07-26

申请号：US15321453

申请日：2015-05-27

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Buus BENDIXEN ,  Peter KJELDSTEEN ,  Allan Ivo SØGAARD

IPC: H02K16/00 ,  F04D13/02 ,  H02K1/02 ,  H02K7/16 ,  H02K15/03 ,  H01F13/00

CPC classification number: H02K16/005 ,  F04D13/025 ,  F04D13/027 ,  H01F13/003 ,  H01F41/028 ,  H02K1/02 ,  H02K7/16 ,  H02K15/03 ,  H02K49/106

Abstract: A magnetic coupling includes an inner rotor (11) and an outer rotor (9) which at least partly surrounds the inner rotor (11). These rotors (11, 9) each are formed of magnetic material (18) and are coupled to one another by way of magnetic forces. The inner rotor (11) and/or the outer rotor (9) contain powdery, magnetizable material (18). The powdery, magnetizable material (18) is magnetized at a side lying opposite the other rotor at several locations distributed over the periphery.

公开(公告)号：US20180189962A1

公开(公告)日：2018-07-05

申请号：US15856601

申请日：2017-12-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Michael HELBO NYGAARD

IPC: G06T7/207 ,  F04D15/00

CPC classification number: G06T7/207 ,  F04D15/0088 ,  F04D15/0094 ,  F04D27/001 ,  F04D29/669 ,  F05D2260/80 ,  F05D2270/8041 ,  G06K9/6202 ,  G06T2207/10016 ,  G06T2207/20016

Abstract: A video sequence of a pump assembly or of a pump assembly part is produced. The video sequence is evaluated by way of digital signal processing assisted by a data base. A condition of the pump assembly is determined by way of this evaluation. In particular it is determined whether the pump runs in a designated manner or it is determined whether unallowably high oscillations are ascertained in a region, wherein this would indicate a defect, for example bearing damage or an unfavorable speed

公开(公告)号：US10012395B2

公开(公告)日：2018-07-03

申请号：US14371078

申请日：2012-12-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Young Olesen

IPC: F24D19/10 ,  F24D3/08 ,  F24D3/02 ,  F16K17/02 ,  F16K11/20

CPC classification number: F24D19/1066 ,  F16K11/20 ,  F16K17/02 ,  F24D3/08 ,  F24D19/1021 ,  F24D19/1069

Abstract: A heating apparatus includes two heating circuits (3, 4), one for room heating (3) and one for domestic water heating (4). A primary heat exchanger (1) is provided as well as at least one secondary heat exchanger (7), for the room heating as well as a secondary heat exchanger (9) for domestic water heating. A circulation pump (6) is provided as well as a switch-over valve (5) which hydraulically integrates the primary heat exchanger (1) into the first or into the second heating circuit (3, 4). The heating circuit (4) for the domestic water heating, on operation of the heating circuit (3) for room heating, is used as a bypass conduit for the primary heat exchanger (1), wherein the switch-over valve (5) forms the bypass valve or is used as a bypass valve.

公开(公告)号：US20180148909A1

公开(公告)日：2018-05-31

申请号：US15820964

申请日：2017-11-22

Applicant: GRUNDFOS HOLDING A/S

Inventor： Carsten KALLESØE ,  Abdul-Sattar HASSAN

IPC: E03B5/00 ,  E03B7/02 ,  E03B7/07 ,  E03B11/10 ,  E03B11/12 ,  G05B15/02 ,  G05D7/06

CPC classification number: E03B5/00 ,  E03B7/02 ,  E03B7/075 ,  E03B11/10 ,  E03B11/12 ,  F04D15/0066 ,  G05B15/02 ,  G05D7/0676 ,  G06F17/12

Abstract: A method of controlling a water reservoir supply pump arrangement determines a set value p, q, v, n of the pump arrangement based on an offset value pref, qref, nref, vref, G0 reduced by a component which is a function of a difference between an actual water level h and a predetermined water level href in a water reservoir. The difference is weighted by a proportional gain factor G. Further, a water reservoir supply pump arrangement is provided including at least one water pump and a control device for controlling the at least one pump.