公开(公告)号：US10443860B2

公开(公告)日：2019-10-15

申请号：US15538491

申请日：2015-12-16

Applicant: Grundfos Holding A/S

Inventor： Thomas Blad ,  Christian Blad

IPC: F24D19/10 ,  F04D13/06 ,  F04D15/00 ,  F24D3/08 ,  F04D29/42 ,  F16K11/00

Abstract: A hydraulic system includes at least one circulation pump assembly (2) provided with a speed controller (26), at least one hydraulic circuit (A, B) connected to the circulation pump assembly (2) as well as at least one mechanical switch device (86, 88; 120, 122) which is mechanically subjected to pressure by a fluid in the hydraulic circuit (A, B) and which can be moved into at least two different switch positions. The mechanical switch device (86, 88; 120, 122) moves by the circulation pump assembly (2) hydraulic coupling via the fluid. The speed controller is configured to initiate a movement of the switch device (86, 88; 120, 122), by at least one hydraulic force acting upon the switch device (86, 88; 120, 122) and causing a movement of the switch device (86, 88; 120; 122) via the hydraulic circuit, via a speed adaptation of the circulation pump assembly (2).

公开(公告)号：US10411571B2

公开(公告)日：2019-09-10

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: H02K1/02 ,  H02K7/16 ,  F04D13/02 ,  H01F13/00 ,  H02K15/03 ,  H02K16/00 ,  H02K49/10 ,  H01F41/02

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：US10400792B2

公开(公告)日：2019-09-03

申请号：US15294020

申请日：2016-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Janus Lukas Sierakowski-Larsen

IPC: F04D1/06 ,  F04D13/06 ,  F04D29/42 ,  F04D29/44 ,  F04D29/58

Abstract: A water supply system (1) includes an electric motor (8) and a centrifugal pump (7) which is driven by the electric motor (8) and with at least one impeller (10) which produces a main delivery flow (29) through an annular space (12) as well as a cooling fluid delivery flow (30) through a space (28) surrounding the motor (8). The annular space (12) is divided by two guide vanes into part-annular-spaces (23, 24) which have a different pressure level on operation. Each part-annular-space (23, 24) is conductively connected to the space (28) which surrounds the motor (8) and through which the cooling fluid runs (FIG. 5).

公开(公告)号：US20190249881A1

公开(公告)日：2019-08-15

申请号：US16391700

申请日：2019-04-23

Applicant: GRUNDFOS HOLDING A/S

Inventor： Søren Emil SØRENSEN

IPC: F24D3/10 ,  F24D3/14 ,  F24D3/02 ,  F04D15/00 ,  F24D19/10 ,  F24D3/12 ,  F16K27/00 ,  E04B5/48

CPC classification number: F24D3/105 ,  E04B5/48 ,  F04D15/0016 ,  F04D15/0022 ,  F16K11/22 ,  F16K19/003 ,  F16K27/003 ,  F24D3/02 ,  F24D3/1075 ,  F24D3/122 ,  F24D3/125 ,  F24D3/127 ,  F24D3/141 ,  F24D3/143 ,  F24D3/146 ,  F24D19/1012 ,  F24D19/1015 ,  F24D2220/0207 ,  F24D2220/0271 ,  F24D2220/042 ,  Y02B30/745 ,  Y10T137/2499 ,  Y10T137/5283

Abstract: A circulation pump assembly for a heating and/or cooling system includes an electric drive motor (108) and a connected pump housing (106) in which at least one impeller (118) is situated and which comprises a first inlet (112) and a first outlet (114). The pump housing (106) includes a second inlet (122) which is connected in an inside of the pump housing (106) at a mixing point (130) to the first inlet (112). A regulating valve (134), which is designed for regulating the mixing ratio of two flows mixing at the mixing point (130), as well as a control device, which controls the regulating valve (134) for regulating the mixing ration, are arranged in the pump housing (106). A hydraulic manifold is provided with such a circulation pump assembly.

公开(公告)号：US20190203850A1

公开(公告)日：2019-07-04

申请号：US16314161

申请日：2017-06-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Ole HANSEN ,  Søren Søgaard JENSEN

IPC: F16K31/60 ,  F16K5/04 ,  F24H9/20

CPC classification number: F16K31/602 ,  F16K5/0442 ,  F24H9/06 ,  F24H9/2007

Abstract: A construction unit (1, 2) forms part of a gas heater and includes a valve (9) which is actuatable by way of a stem (10). The stem (10) includes positive-fit device. The stem (10) is controllable from the outside via a tool which can be brought into engagement with the positive fit device. A detent engagement device (18, 27) holds the tool (21) in engagement with the stem (10), so that the valve is controllable without the aid of outside tools.

公开(公告)号：US10323645B2

公开(公告)日：2019-06-18

申请号：US15839233

申请日：2017-12-12

Applicant: Grundfos Holding a/s

Inventor： Carsten Skovmose Kallesøe ,  Abdul-Sattar Hassan

IPC: F04D15/00 ,  E03B1/00 ,  E03B7/02 ,  E03B7/07 ,  E03B1/02 ,  G05D16/20 ,  G01M3/28

Abstract: A pump system for a water supply mains has at least one pump device, a pressure detecting sensor at the pressure side of the pump device, a flow detecting sensor of the pump device, several pressure sensor units (D) remote arranged remotely from the pump device in different part regions of the mains, and a pump control device. The control device includes a model formation module designed in each case to produce a model (A) representing pressure loss from the pressure sensor to the position of the respective pressure sensor unit (D), based on several pressure measured values of at least two pressure sensor units (D) for the at least two associated part regions. The control device is designed for regulation of the pump device based on produced models (A), as well as to a corresponding method for regulation of a pump device in a water supply mains.

公开(公告)号：US20190131862A1

公开(公告)日：2019-05-02

申请号：US16306714

申请日：2017-04-07

Applicant: GRUNDFOS HOLDING A/S

Inventor： Allan Ivo SØEGAARD ,  Flemming Buus BENDIXEN ,  Alexandru SOREA ,  Henrik RASSMUSEN

IPC: H02K51/00 ,  H02K1/24 ,  H02K1/27

CPC classification number: H02K51/00 ,  H02K1/246 ,  H02K1/276 ,  H02K16/02

Abstract: The magnetic gear includes a magnetic force generator (8), a driving shaft (1), a driven shaft (2) and a gear carrier (3) which are magnetically coupled in movement to one another. Only one magnetic force generator (8) is provided, which one magnetic force generator (8) has a north-south alignment that runs in the axis direction (111) of a shaft (1, 2) or parallel to this.

公开(公告)号：US20190112202A1

公开(公告)日：2019-04-18

申请号：US16157591

申请日：2018-10-11

Applicant: GRUNDFOS HOLDING A/S

Inventor： Victor Augusto YANGALI-QUINTANILLA ,  Dominik Marek DOMINIAK ,  Wilhelmus Johannes Cornelis VAN DE VEN

IPC: C02F1/00 ,  B01D61/02 ,  B01D61/10 ,  B01D61/12 ,  B01D65/08 ,  C02F1/44

Abstract: A dosing pump (19) doses antiscalant into a membrane-based water treatment system (1). The dosing pump (19) includes a displacement body for pumping antiscalant into the membrane-based water treatment system (1) in doses. A motor drives the displacement body. A control module controls the motor. The control module is configured to vary the dosage of antiscalant pumped into the water treatment system (1) based on a temperature corrected system variable (SVTc) being based on a plurality of operating variables of the water treatment system (1).

公开(公告)号：US10243425B2

公开(公告)日：2019-03-26

申请号：US14377319

申请日：2013-02-07

Applicant: GRUNDFOS HOLDING A/S

Inventor： Knud Jørgen Saaby Mikkelsen ,  Bjørn Breitzke ,  Steen Heelund

IPC: H02K5/00 ,  H02K5/18 ,  F04D29/58 ,  F04D13/06 ,  H02K5/22 ,  H02K9/19 ,  H02K11/33 ,  H02K5/128 ,  H02K7/14

Abstract: An electric motor includes a motor housing (5) which includes cooling ribs (15) on the peripheral side leading away heat arising in the motor. The cooling ribs (15) only extend over a part of the periphery of the motor housing (5), so that cooling ribs (21) of the electronics housing (13) have space in the cooling-rib-free part of the motor housing (5). The cooling ribs (21) of the electronics housing (13) are arranged aligned with the cooling ribs (15) of the motor transversely to a motor axis (14).

公开(公告)号：US20190086286A1

公开(公告)日：2019-03-21

申请号：US16135419

申请日：2018-09-19

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN

IPC: G01M3/16 ,  F04B43/04 ,  F04D15/02 ,  G01M3/38 ,  G08B19/00

Abstract: A pump seal leakage detection system (8) includes a leakage piping (13) including a collector pipe (21) and an air stream pipe (23), a sensor (15) positioned at the air stream pipe (23), and an air displacement device (17) for driving an air stream through the air stream pipe (23). The collector pipe (21) includes an inlet port (25) that is connectable to a leakage centrifuge (5), and an outlet port (27) into the air stream pipe (23). The sensor (15) is configured to detect a leakage drop at the outlet port (27) of the collector pipe (21) or in the air stream pipe (23). The air displacement device (17) is configured to blow a leakage drop off the outlet port (27) of the collector pipe (21) by an air stream towards an outlet port (35) of the air stream pipe (23).