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.

公开(公告)号：US20170201167A1

公开(公告)日：2017-07-13

申请号：US15321611

申请日：2015-06-15

Applicant: Grundfos Holding A/S

Inventor： Flemming Buus Bendixen ,  Frank Gravers Pedersen ,  Peter Valler ,  Henrik Rasmussen ,  Allan Ivo Søegaard

IPC: H02K49/10 ,  F04D25/02 ,  F04D25/06 ,  F04D13/06 ,  F04D13/02

CPC classification number: H02K49/102 ,  F04D13/027 ,  F04D13/06 ,  F04D25/026 ,  F04D25/06 ,  F04D29/22 ,  F04D29/28 ,  H02K49/108

Abstract: The present invention relates to a magnetic gear comprising a first magnetic rotor with a first shaft; and a second magnetic rotor with a second shaft; a support structure, with a first end shield and a second end shield connected by a stat or support element. A first bearing attached to the first end shield supports the first shaft and a second bearing supports the second shaft. The first and second magnetic rotors are displaced in axial direction from each other in an axial gap; and the first shaft and shaft are approximately aligned in opposite axial directions; and a plurality of magnetic flux conductors encircles the first and second magnetic rotors, thereby conducting magnetic flux from the first magnetic rotor to the second magnetic rotor. The magnetic gear comprises a dividing wall arranged in the axial gap between the first magnetic rotor and the magnetic second rotor, to separate a first chamber from a second chamber.

公开(公告)号：US20170182439A1

公开(公告)日：2017-06-29

申请号：US15392371

申请日：2016-12-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Dominik DOMINIAK ,  Rikke Eriksen GISSEL ,  Jacob Appelt Vibe SVENDSEN ,  Xing ZHENG ,  Jan Carøe AARESTRUP

IPC: B01D37/04 ,  B01D29/66 ,  B01D37/03

CPC classification number: B01D37/043 ,  B01D29/66 ,  B01D37/03 ,  B01D61/16 ,  B01D65/02 ,  B01D2311/04 ,  B01D2311/2642 ,  B01D2321/04 ,  B01D2321/20

Abstract: a filtering method, with which a fluid to be filtered is led through a filter (4), the filter (4) is back-flushed at regular time intervals and a pre-treatment agent is added to the fluid at the entry side of the filter. A process variable which describes the efficiency of the filtration is continuously computed during the filtration, and a metering quantity of the pre-treatment agent is reset on the basis of the values for the process variable or a characteristic values derived from this.

公开(公告)号：US20170159672A1

公开(公告)日：2017-06-08

申请号：US15367436

申请日：2016-12-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN

IPC: F04D29/42 ,  F04D29/62 ,  F04D1/06

CPC classification number: F04D29/4266 ,  F04D1/06 ,  F04D1/063 ,  F04D29/026 ,  F04D29/4293 ,  F04D29/628 ,  F05D2230/54 ,  F05D2250/51 ,  F05D2250/52 ,  F05D2300/171

Abstract: The invention relates to a multistage pump (1), including a pump body (4), at a lower end of which a base element (2) is arranged, and at an upper end of which a head element (3) is arranged. At least the base element (2) is made from sheet steel and has an inlet port (5) and an outlet port (16). The inlet port (5) and the outlet port (16) are mechanically connected to each other by a pipe (6) running through the base element (2).

公开(公告)号：US20170146029A1

公开(公告)日：2017-05-25

申请号：US15355800

申请日：2016-11-18

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Bundesen SVARRE ,  John Frigård NIELSEN ,  Finn Ulrich STORGAARD ,  Iraj BABAZADEH

IPC: F04D29/62 ,  F04D13/02 ,  F04D17/08 ,  F04D25/02 ,  F04D29/10 ,  F04D29/053 ,  F04D29/046 ,  F04D29/056 ,  F04D29/42 ,  F04D1/06 ,  F04D29/043

Abstract: A multi-stage centrifugal pump includes a pump casing, in which a shaft (8) carrying an impeller is rotatably arranged. The pump casing has a pump casing foot part (2) that includes a reversibly closable maintenance opening (60), via which a bearing and/or seal (20, 25), which is arranged at a shaft end within the pump casing, is accessible and exchangeable.

公开(公告)号：US20170146019A1

公开(公告)日：2017-05-25

申请号：US15355744

申请日：2016-11-18

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Bundesen SVARRE ,  John Frigård NIELSEN

IPC: F04D29/12 ,  F04D17/08 ,  F04D29/043 ,  F04D29/056 ,  F04D29/22 ,  F04D29/28 ,  F04D29/42 ,  F04D29/046 ,  F04D1/06 ,  F04D29/053

CPC classification number: F04D29/126 ,  F04D1/06 ,  F04D29/041 ,  F04D29/0413 ,  F04D29/0416 ,  F04D29/042 ,  F04D29/051 ,  F04D29/0513 ,  F04D29/0516 ,  F04D29/086 ,  F04D29/106 ,  F04D29/12 ,  F04D29/122

Abstract: A multistage centrifugal pump (1) has impellers (9) arranged on a common shaft (8), which is rotatably arranged within a pump casing (2-4). One end of the shaft (8) is led out of the casing (2-4) for connection to a drive motor and another shaft end (15) is rotatably mounted in the pump casing (2-4). The shaft end (15) which is mounted within the pump casing (2-4) is subjected to a counter-force which is produced by way of pressure subjection via a conduit connection to a delivery side of the pump. An axial seal (11) is provided on the shaft end (15) arranged within the pump casing (2-4). The rotating part of the axial seal is led on the shaft end and the non-rotating part is led, axially movably, within the pump casing (2-4). A sealing arrangement is provided between the pump casing and the axially movably mounted part.

公开(公告)号：US09636638B2

公开(公告)日：2017-05-02

申请号：US14420137

申请日：2013-08-07

Applicant: GRUNDFOS HOLDING A/S

Inventor： Bent Gadgaard ,  Jens Christian Jensen

IPC: B01D69/10 ,  B01D29/41 ,  B01D63/16 ,  B01D63/08 ,  B01D65/02

CPC classification number: B01D69/10 ,  B01D29/41 ,  B01D63/084 ,  B01D63/16 ,  B01D65/02 ,  B01D2313/14 ,  B01D2321/04

Abstract: A filter element is provided for a filter element stack. The filter element includes a carrier body (4), at least one spacer which can be subjected to throughflow and at least one filter membrane covering this. The spacer at least partly is formed by a knitted fabric of plastic threads which on one side is covered by a membrane of plastic material, to which it is fixedly connected, and forms a filter material (8) to be fastened on the carrier body (4) with a positive fit (FIG. 5).

公开(公告)号：US20170107986A1

公开(公告)日：2017-04-20

申请号：US15292535

申请日：2016-10-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Bjarne VINTHER TOFT

IPC: F04D13/06 ,  F04D29/42 ,  F04D17/08

CPC classification number: F04D13/0686 ,  F04D13/06 ,  F04D13/16 ,  F04D17/08 ,  F04D29/026 ,  F04D29/4273 ,  F04D29/4293 ,  F04D29/628 ,  F05D2250/52 ,  F05D2300/43

Abstract: A water supply system includes a water inlet connection (12), a water outlet connection (28), a centrifugal pump (3), an electric motor (5), an electrical/electronic control and a diaphragm tank (30). The centrifugal pump (3) and the diaphragm tank (30) are arranged above one another and are connected to one another via a construction unit (6). The construction unit (6) includes the water connections (12, 28), the conduit connections between the water connections (12, 28) and the pump (3), as well as a threaded connection piece (29) for the diaphragm tank (30).