公开(公告)号：US10016808B2

公开(公告)日：2018-07-10

申请号：US14768277

申请日：2014-02-04

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Vestermark Vad

IPC: B22C9/10 ,  F04D29/22 ,  B22F3/22 ,  B22F7/06 ,  B29C33/00 ,  B29C33/76 ,  B29C45/40 ,  B29L31/08

CPC classification number: B22C9/103 ,  B22F3/225 ,  B22F7/06 ,  B29C33/0033 ,  B29C33/76 ,  B29C45/40 ,  B29K2859/00 ,  B29K2905/06 ,  B29L2031/08 ,  F04D29/2222

Abstract: A segmented core (1) for molding of an impeller (12), especially a pump impeller, includes at least three segments (2). All of the segments (2) have the same form and each segment (2) has connecting devices (3, 3′) for connecting the segment (2) with the adjacent segments (2). A method for molding an impeller (12) includes the steps of: providing a molding tool (14), providing a core (1) including at least three identical segments (2), which include the connection portions (3, 3′) for connecting the segment (2) with the adjacent segments (2); assembling of the core (1); placing the core (1) in the molding tool (14); molding the impeller (12), ejecting the core (1) and the impeller (12) out of the molding tool (14); and removing the core (1) from the impeller (12).

公开(公告)号：US20180181145A1

公开(公告)日：2018-06-28

申请号：US15855271

申请日：2017-12-27

Applicant: GRUNDFOS HOLDING A/S

Inventor： Jørgen KARKOV ,  Kris NØRSKOV ,  Carsten Skovmose KALLESØE

IPC: G05D7/06 ,  F04B49/06

CPC classification number: G05D7/0617 ,  F04B49/065 ,  F04B2205/07 ,  F04D13/12 ,  F04D15/0088 ,  F05D2270/20 ,  H04L67/12

Abstract: The method serves for operating at least one pump assembly (1, 1a, 5) of a multitude of pump assemblies (1, 1a, 5) which each comprise a programmable electronic motor (4, 4a, 6) control for individual pumps or groups or pumps, and which are at least temporarily data-connected to a server (8) via a network, with which data, in particular parameters and/or operating data of the multitude of pump assemblies (1, 1a, 5) is transferred via the network to a server (8) and is stored there in a data base. The stored data is processed according to defined typically statistical computation rules, whereupon the at least one pump assembly is then adapted in its programming via the network, on the basis of the processed data.

公开(公告)号：US09982675B2

公开(公告)日：2018-05-29

申请号：US14501576

申请日：2014-09-30

Applicant: GRUNDFOS HOLDING A/S

Inventor： Kim Hulegaard Jensen ,  Lars Sund Mortensen ,  Jan Carøe Aarestrup

IPC: F04D15/00 ,  H02H7/08 ,  H02H7/085 ,  H02H3/00 ,  H02P29/032

CPC classification number: F04D15/0077 ,  F04D15/0066 ,  H02H3/006 ,  H02H7/0833 ,  H02H7/0852 ,  H02P29/032

Abstract: A method for controlling the power limit of a pump device includes controlling the power limit of the pump device on the basis of a pump media temperature Tm and an ambient temperature Ta measured inside a control box of the pump device. A pump device, in particular a centrifugal pump, is driven by a motor. The motor is controlled by a control box wherein temperature sensors for measuring a media temperature Tm and an ambient temperature Ta are arranged in the control box so as to control the power limit of the pump device depending on the measured media temperature Tm and an ambient temperature Ta.

公开(公告)号：US20180112658A1

公开(公告)日：2018-04-26

申请号：US15661452

申请日：2017-07-27

Applicant: GRUNDFOS HOLDING A/S

Inventor： Peter FOSMARK ,  Flemming MUNK ,  Karsten DYRBYE

IPC: F04B51/00 ,  E21B47/04 ,  F04B49/06 ,  G01F23/24

CPC classification number: F04B51/00 ,  E21B43/128 ,  E21B47/042 ,  F04B17/03 ,  F04B49/06 ,  F04D13/08 ,  F04D15/0088 ,  F04D15/0218 ,  G01F23/24 ,  G01F23/28

Abstract: A submersible pump assembly (1), for arrangement in a shaft (2) or receptacle, includes a pump (3) and an electric motor (8) driving the pump (3) and a cable (5) for the supply of electricity. The cable is configured for being led out of the shaft (2) or receptacle at the upper side and for connection to an electricity source (7) outside the shaft or receptacle. The pump assembly (1) includes an electronics unit (9) which is configured to transmit a signal into the cable (5) and to detect a reflection signal at the surface (4) of the fluid (10) located in the shaft (2) or receptacle. The electronics unit (9) is configured to determine, from this reflection signal, a fluid level (11) in the shaft (2) or receptacle by way of time domain reflectometry.

公开(公告)号：US20180073509A1

公开(公告)日：2018-03-15

申请号：US15700666

申请日：2017-09-11

Applicant: Grundfos Holding A/S

Inventor： Christian MADSEN

IPC: F04D9/02 ,  F04D1/06 ,  F04D13/06 ,  F04D15/00 ,  E03B7/04

CPC classification number: F04D9/02 ,  E03B7/04 ,  F04D1/00 ,  F04D1/06 ,  F04D9/001 ,  F04D9/005 ,  F04D9/006 ,  F04D13/06 ,  F04D13/16 ,  F04D15/0005 ,  F04D15/0066

Abstract: A centrifugal pump assembly (2) includes an impeller, an electric drive motor (4), driving the impeller (12), and a back-flow channel (24), forming a flow connection from a delivery side (18) to a suction side (16). A valve (26), in a pressure-dependent manner, closes the flow connection. A control device (28) adjusts/sets the speed (n) of the drive motor (4), and is configured with a venting function for venting the centrifugal pump assembly (2) on operation. According to the venting function, after the detection of an air accumulation, the speed (n) of the drive motor (4) is automatically reduced, and subsequently the speed (n) is rapidly increased again. A method is also provided for removing an air accumulation from a centrifugal pump assembly during operation, which method includes reducing the speed (n) of the centrifugal pump assembly and subsequently rapidly increasing the speed (n) of the centrifugal pump again.

公开(公告)号：US09897096B2

公开(公告)日：2018-02-20

申请号：US14268304

申请日：2014-05-02

Applicant: Grundfos Holding a/s

Inventor： Johnny Trangbaek Klausen ,  Thomas Sorensen

IPC: F04D29/046 ,  F04D29/047 ,  F16C43/02 ,  F04D29/62 ,  F16C35/02 ,  F16C33/04 ,  F04D17/12

CPC classification number: F04D29/046 ,  F04D17/122 ,  F04D29/0465 ,  F04D29/047 ,  F04D29/628 ,  F16C33/043 ,  F16C35/02 ,  F16C43/02

Abstract: A bearing unit (2), designed for attachment on a shaft of a pump assembly, has an inner sleeve (6) for receiving the shaft and a bearing sleeve (4) fixed on the outer periphery of the inner sleeve (6). At a first axial end (7) the inner sleeve (6) includes an engagement element (8), designed for positive, rotationally fixed engagement with the shaft or with a component (42) connected to the shaft. At a second opposite axial end the inner sleeve (6) includes a second contact shoulder (10), which fixes the bearing sleeve (4) in an axial direction (X). A pump assembly having such a bearing unit is also provided.

公开(公告)号：US20170355629A1

公开(公告)日：2017-12-14

申请号：US15540208

申请日：2015-12-29

Applicant: Grundfos Holding A/S

Inventor： Tom Jæger ,  Dominik Marek Dominiak ,  Marcel Gausmann

IPC: C02F3/12 ,  C02F3/30 ,  C02F3/06 ,  C02F3/10 ,  C02F3/00 ,  C02F101/30

CPC classification number: C02F3/1221 ,  C02F3/006 ,  C02F3/06 ,  C02F3/109 ,  C02F3/1215 ,  C02F3/302 ,  C02F2101/30 ,  C02F2203/006 ,  C02F2209/001 ,  C02F2209/03 ,  C02F2303/10 ,  C02F2303/20 ,  Y02W10/15 ,  Y02W10/30

Abstract: The present invention relates to a filtering device for a water treatment system comprising a biological treatment device adapted to provide a sludge from wastewater or filtrated wastewater, and/or the biological treatment device being fluidic connectable to or in fluidic connection with the filtering device for receiving filtrated wastewater from the filtering device and for delivering sludge to the filtering device. The filtering device is a cake filtration device comprising a fluid penetrable support structure and the support structure is provided as one or more tubular elements having a filtration cake provided on the inside of the fluid penetrable support structure. The filtering has device an inlet being connectable to receive liquid to be filtered so that the flux of liquid to be filtered is from the inside of the support structure, through the filtration cake and to the outside of the support structure thereby providing a filtrate, an outlet for outletting liquid from the interior of the tubular element, and a filtrate outlet for outletting filtrate from the filtering device. The filtration cake is being provided by deposition of solids from the sludge formed in the biological treatment device.

公开(公告)号：US20170328367A1

公开(公告)日：2017-11-16

申请号：US15532294

申请日：2015-12-03

Applicant: Grundfos Holding A/S

Inventor： Karsten FRILEV ,  Simon MØLGAARD MØLLER ,  Rose KAMPMANN

IPC: F04D13/06 ,  G08B5/22

CPC classification number: F24D19/1012 ,  F04D13/0686 ,  F04D15/0066 ,  F04D15/0088 ,  F24D3/10 ,  F24D19/1015 ,  F24D19/1024 ,  F24D19/1048 ,  G08B5/228 ,  H04Q9/00 ,  H04Q2209/43 ,  Y02B30/745

Abstract: An electronic converter unit (30, 86, 87) for being arranged external to a pump unit (10) is described. The pump unit (10) includes a housing (12), which comprises a signal source (16, 18) for emitting a signal. The electronic converter unit (30, 86, 87) comprises a signal detector (40) for measuring the signal emitted from the signal source (18) of the pump unit (10). The electronic converter unit (30) further comprises a converter unit (41) for converting said signals to electrical signals, and transmitting means (42) for transmitting the electrical signals to an external communication unit (50). The electronic converter unit (30, 86, 87) is further configured to operate in a signal converter mode (30) and a signal repeater mode (86, 87).

公开(公告)号：US09790971B2

公开(公告)日：2017-10-17

申请号：US14719874

申请日：2015-05-22

Applicant: GRUNDFOS HOLDING A/S

Inventor： Niels Mogensen ,  Carsten Skovmose Kallesøe

IPC: F15B21/00 ,  F04D13/12 ,  F04D15/00 ,  F04D15/02 ,  G05B13/02

CPC classification number: F15B21/00 ,  F04D13/12 ,  F04D15/0066 ,  F04D15/0281 ,  G05B13/021 ,  Y10T137/0318 ,  Y10T137/86131

Abstract: The invention relates to a pump control method for the control of the operation of a pump system with at least two pump assemblies (2) which are arranged parallel or in series to one another. The method includes determining a specific total power ES of the complete pump system which defines a total power in relation to a hydraulic total load of the complete pump system, determining a specific individual power EP,n of each pump assembly (2) which defines an individual power in relation to the individual hydraulic load of the respective pump assembly (2), computing an individual load factor Egain,n for each pump assembly (2) according to the equation E gain , n = E S E P , n and adapting the individual hydraulic load (Qn; Hn) of the pump assemblies (2) in dependence on a desired hydraulic load (QD; HD) as well as on the individual load factor Egain,n of the respective pump assembly (2).

公开(公告)号：US20170248142A1

公开(公告)日：2017-08-31

申请号：US15519685

申请日：2014-10-15

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming MUNK ,  Casper Lyngesen MOGENSEN ,  Jan Carøe AARESTRUP

IPC: F04D15/00 ,  F04D29/043 ,  G01M99/00 ,  F04D13/06

CPC classification number: F04D15/0088 ,  F04D13/06 ,  F04D15/0077 ,  F04D29/043 ,  F04D29/046 ,  F04D29/669 ,  G01H17/00 ,  G01M99/008

Abstract: A method for detecting faults or operational parameters in a pump assembly by use of a handheld communication device is described. The pump assembly includes an electric motor and a pump, wherein the pump assembly or electric motor has at least one rotating shaft The method comprises the steps of: a) contactless measuring a sound signal emanating from the pump assembly by use of a microphone connected to or implemented in the handheld communication device, b) processing the measured sound signal, and c) recognising one or more sound emanating condition including any possible faults by way of the processed sound signal.