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.

公开(公告)号：US20180010609A1

公开(公告)日：2018-01-11

申请号：US15645036

申请日：2017-07-10

Applicant: Grundfos Holding A/S

Inventor： Olav JENSEN ,  Ole HANSEN ,  Bent DØSSING ,  Robert GREVE

IPC: F04D15/00 ,  F04D13/06 ,  F04D29/08 ,  F04D29/22

Abstract: A pump assembly includes pump casing (2), an impeller (14) rotatably arranged in the pump casing, a two rotation directions (A, B) electrical drive motor connected to drive the impeller and a valve arrangement (28) arranged in the pump casing to switch a flow path downstream of the impeller between two exits (24, 26) of the pump casing, depending on a rotation direction of the impeller. The valve arrangement includes a first movable valve element (34) at a first exit (24) and a second movable valve element (36) at a second exit (26). The first valve element partly closes the first exit in a closed position and is movable into an opened position by flow in the first rotation direction and the second valve element partly closes the second exit in a closed position and is movable into an opened position by flow in the second rotation direction (B).

公开(公告)号：US09810232B2

公开(公告)日：2017-11-07

申请号：US14368993

申请日：2012-12-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Finn Mathiesen Høj

IPC: F04D29/08 ,  F04D13/06

CPC classification number: F04D29/086 ,  F04D13/0606

Abstract: A pump assembly with a stator housing (18), in whose inside a wet-running electric motor with a can (14) is arranged, and with a pump housing (2) connected to the stator housing (18). An annular shaped seal (22) is arranged between the stator housing (18) and a collar (34) of the can (14) on the one hand, and the pump housing (2) on the other hand.

公开(公告)号：US20170272844A1

公开(公告)日：2017-09-21

申请号：US15532238

申请日：2015-03-10

Applicant: Grundfos Holding A/S

Inventor： René Stig BERGQVIST ,  Christian WOLF ,  Jens MILTHERS

IPC: H04Q9/00 ,  F04D13/06 ,  F04D15/00

Abstract: An electronic converter unit for retrofitting to an external part of a housing of a pump unit is described. The housing comprises a light source for emitting light to display an operating status of the pump unit. The electronic converter unit comprises: a photo detector for measuring light emitted from the light source of the pump unit, a converter unit for converting optical signals to electrical signals, and transmitting means for wirelessly transmitting the electrical signals to an external communication unit.