公开(公告)号：US10686346B2

公开(公告)日：2020-06-16

申请号：US14377057

申请日：2013-01-11

Applicant: GRUNDFOS HOLDING A/S

Inventor： John B. Jacobsen ,  Jens Peter Krog

IPC: H02K5/10 ,  H02K11/33 ,  H02K7/14 ,  H02K11/00 ,  F01D25/32 ,  F04D1/00 ,  F04D13/06 ,  F04D29/54 ,  F04D19/00 ,  F04D25/06 ,  F04D29/32 ,  F04D29/40 ,  H02K5/22

Abstract: A pump assembly has at least one electronics receiving space (54; 54; 54″). The electronics receiving space (54; 54; 54″) includes at least one defined ventilation opening (40; 40; 40″). The ventilation opening (40; 40; 40″), at an outer side of the electronics receiving space (54; 54; 54″), runs out into an air duct (41; 41; 46; 46; 48, 48′) which is led along at least one condensation surface (60; 60; 60″).

公开(公告)号：US10677249B2

公开(公告)日：2020-06-09

申请号：US15538470

申请日：2015-12-16

Applicant: Grundfos Holding A/S

Inventor： Thomas Blad ,  Christian Blad

IPC: F04D13/06 ,  F04D15/00 ,  F24D3/08 ,  F24D3/10 ,  F24D19/10 ,  F04D29/42 ,  F16K11/07 ,  F16K31/143

Abstract: A hydraulic system includes a circulation pump assembly (2) provided with a speed controller (4, 26), a hydraulic circuit (A, B) connected to the circulation pump assembly (2) as well as a mechanical switch device (86, 88; 120, 122; 120″, 122″) which is subjected to pressure from a fluid in the hydraulic circuit (A, B) and which can be moved into at least two different switch positions. The mechanical switch device (28; 86, 28; 120, 122) can be moved by the circulation pump assembly (2) by way of a hydraulic coupling via the fluid. The speed controller is configured to initiate a movement of the switch device (86, 88; 120, 122; 120″, 122″) by way of at least one hydraulic force acting thereon and causing a movement of the switch device (86, 88; 120, 122; 120″, 122″), produced via the hydraulic circuit, via a speed adaptation of the circulation pump assembly.

公开(公告)号：US20200158351A1

公开(公告)日：2020-05-21

申请号：US16635898

申请日：2018-08-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Christian BLAD

IPC: F24D19/10 ,  F24D3/10 ,  F24D3/16 ,  F04D15/00 ,  F04D29/42

Abstract: A mixing device includes a first inlet (84) and a second inlet (86) inlet and an outlet (80). The first inlet (84) is connected to the outlet (80) via a first flow connection and the second inlet (86) is connected to the outlet (80) via a second flow connection. A circulation pump assembly (24; 46) includes an electric drive motor (30), a control device (34), for controlling the speed of the drive motor (30), and at least one impeller (68; 100) driven by the drive motor. The at least one impeller (68; 100) is positioned in the first flow connection. The flow connections are configured such that at least one hydraulic pressure generated by the impeller (68; 100) in the first flow connection acts as hydraulic resistance in the second flow connection.

公开(公告)号：US20200063980A1

公开(公告)日：2020-02-27

申请号：US16668711

申请日：2019-10-30

Applicant: GRUNDFOS HOLDING A/S

Inventor： Søren Emil SØRENSEN

IPC: F24D3/10 ,  F24D3/12 ,  F24D3/14 ,  F24H1/12 ,  F24D19/10

Abstract: A hydraulic manifold for a hydraulic heating and/or cooling system includes a feed conduit (212) and a return conduit (216). The feed conduit (212) includes at least one feed connection (258), and the return conduit (216) includes at least one return connection (260), for the connection of a load circuit (228). A load module (204), in which a section of the feed conduit (212) with the feed connection (258), and a section of the return conduit (216) with the return section (260) are formed, includes at least one mixing device with a pump (232) and with a regulating valve (230), to admix fluid from the return connection (260) to a fluid flow from the feed conduit (212) to the feed connection (258). The section of the feed conduit (212) and the return conduit (216) in each case include an additional contact for connection with a further load module.

公开(公告)号：US20200011309A1

公开(公告)日：2020-01-09

申请号：US16503047

申请日：2019-07-03

Applicant: GRUNDFOS HOLDING A/S

Inventor： Sergei GERZ ,  Valeri KECHLER

IPC: F04B13/00 ,  F04B49/06 ,  F04B43/04

Abstract: A Metering pump includes a displacement element (4), a drive system with an electric drive motor (12) driving the displacement element (4) and a control device (22) controlling the electric drive motor (12). The control device (22) is configured in such a manner that it detects the current position of the displacement element (4), detects the torque (M) of the electric drive motor (12) at several positions of the displacement element (4) and monitors the torque (M) in relation to the position of the displacement element (4), and a method for controlling such metering pump.

公开(公告)号：US20190390445A1

公开(公告)日：2019-12-26

申请号：US16447154

申请日：2019-06-20

Applicant: GRUNDFOS HOLDING A/S

Inventor： Carsten Skovmose KALLESØE ,  Abdul-Sattar HASSAN ,  Tom Nørgaard JENSEN

IPC: E03B7/07 ,  E03B1/02 ,  E03B7/09

Abstract: A control system (15) controls a water supply from at least two separate input lines (3i-k) into a sector (1) of a water supply network. The control system (15) is configured to receive input flow information indicative of the water input flow (qi-k) through each of the input lines (3i-k). The control system (15) is configured to receive input pressure information indicative of the input pressure (pi) in at least one (3i) of the input lines (3i-k). The control system (15) is configured to receive pressure information indicative of at least one pressure value (pcri,m,n) determined by a pressure sensor (7m,n) within the sector (1). The control system (15) is configured to control the input pressure (pi) by controlling at least a pressure regulating system (13i) at an input line (3i) based on the input flow information from all input lines (3i-k) and based on the sector pressure information.

公开(公告)号：US20190323513A1

公开(公告)日：2019-10-24

申请号：US16470876

申请日：2017-12-15

Applicant: GRUNDFOS HOLDING A/S

Inventor： Brian LUNDSTED POULSEN ,  Lasse SØGAARD LEDET

IPC: F04D29/16 ,  F04D17/08

Abstract: A centrifugal pump includes at least one pump stage, with a rotatable impeller (5) with a suction port (6) which is sealed with respect to a stationary pump part (1) by way of a sealing arrangement. The sealing arrangement includes a sealing ring (9) between the impeller (5) and the stationary pump part (1). The sealing arrangement is configured such that at least on delivery operation of the pump, the sealing arrangement has sealing sections which are distanced to the counter sealing surface and sealing sections which bear on the counter sealing surface, in an alternatingly successive manner considered in the peripheral direction of the sealing ring (9).

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).