公开(公告)号：US11159081B2

公开(公告)日：2021-10-26

申请号：US17255069

申请日：2019-06-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Buus Bendixen ,  Alexandru Sorea ,  Tanja Johnsen

IPC: H02K49/10 ,  H02K7/18 ,  F03B13/18

Abstract: The present disclosure refers to a magnetic rack-and-pinion coupling system (1) for contactless transfer of kinetic energy comprising: a rack component (3) comprising a first pattern of ferromagnetic structure being repetitive along a rack length axis (L), and a pinion stack component (5) being rotatable about a rotor axis (R), wherein the rack component (3) and/or the pinion stack component (5) are movable relative to each other along the rack length axis (L), and wherein the pinion stack component (5) comprises a stack of pinion discs (9a,b,c,d) each comprising a second pattern of ferromagnetic structure being repetitive along a circumference of the respective pinion disc (9a,b,c,d), wherein at least one magnetic field producing element (13a,b,c) is sandwiched between neighbouring pinion discs (9a,b,c,d), wherein each magnetic field producing element (13a,b,c) has one magnetic pole (N, S) at an axial front side (14) of the magnetic field producing element (13a,b,c) and the other magnetic pole (S, N) at an axial end side (16) of the magnetic field producing element (13a,b,c).

公开(公告)号：US11156370B2

公开(公告)日：2021-10-26

申请号：US15034317

申请日：2014-11-04

Applicant: GRUNDFOS HOLDING A/S

Inventor： Søren Emil Sørensen ,  Rasmus Hessellund Andersen

IPC: F24D3/14 ,  F24D3/10 ,  F24D3/12 ,  F24D19/10 ,  F24F5/00

Abstract: A hydraulic manifold for hydraulic heating and/or cooling systems includes a feed conduit and a return conduit. The feed conduit includes at least one feed connection and the return conduit includes at least one return connection, for the connection of a load circuit. The manifold has a modular construction with a main module and connected load module(s). The main module includes a section of the feed conduit and/or of the return conduit as well as an electric connection. The load module includes a section of the feed conduit with a feed connection, and/or a section of the return conduit with a return connection, as well as at least one regulating device for regulating the flow through a load circuit connected to the feed connection and to the return connection. The main module includes a manifold control device for the control of the regulating device in the load module(s).

公开(公告)号：US20210222699A1

公开(公告)日：2021-07-22

申请号：US17148778

申请日：2021-01-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Gunnar GABA

IPC: F04D29/02 ,  F04D29/046 ,  F04D29/62 ,  F16C33/76 ,  F16C35/02

Abstract: A wet-running pump bearing retainer (29) includes a radial bearing configured for a lubrication film between an inner sliding surface (41) and a rotor shaft (13) of a pump (1). The radial bearing is fitted into a radially inner section (49) that defines an axial fluid channel (45), located at a first radial distance (D1) to a rotor axis (R) and providing a fluid flow path (F1) in a first axial flow direction. The first radial distance is larger than a radius (D0) of the inner sliding surface. A radially outer section (51) extends from the inner section and defines a second axial fluid channel (47) for a flow path (F2) in a second axial flow direction, opposite to the first flow direction. The second axial fluid channel is located at a second radial distance (D2) to the rotor axis, which is larger than the first radial distance.

公开(公告)号：US10941782B2

公开(公告)日：2021-03-09

申请号：US15939926

申请日：2018-03-29

Applicant: GRUNDFOS HOLDING A/S

Inventor： Klaus Vestergaard Kragelund ,  Jan Plougmann ,  Jan Carøe Aarestrup

IPC: F04D13/06 ,  F04D29/08 ,  F04D29/046 ,  F04D29/62 ,  F04D1/00

Abstract: A pump assembly (1) includes an impeller with a rotor axis (R). A pump housing (11) accommodates the impeller. A drive motor with a stator (14) and a rotor (51) drives the impeller (12). A rotor can (57) accommodates the rotor (51), and a stator housing (13) accommodating the stator (14). The rotor can (57) is mounted by a first coupling to the pump housing (11). The stator housing (13) is mounted by a second coupling to the pump housing (11). The first coupling is located closer to the rotor axis (R) than the second coupling.

公开(公告)号：US10900487B2

公开(公告)日：2021-01-26

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 ,  F04D29/62 ,  F04D1/00

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：US10855137B2

公开(公告)日：2020-12-01

申请号：US14655400

申请日：2013-12-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Michael Egelund Olsen ,  Christian Schuldt

IPC: H02K5/22 ,  F04D25/06 ,  H02K11/33 ,  H02K11/00 ,  H02K11/30

Abstract: A pump assembly has an electrical drive motor arranged in a stator housing (8) and has an electronics housing (18) which is connected to the stator housing (8) and in which at least one circuit board (40) with electronic components is arranged. At least one separate connection element (48; 62), which is designed a plastic shaped part, is arranged on or in the electronics housing (18). The connection element includes a first electrical plug connector (52; 66), connected to a corresponding electrical plug coupling on the circuit board (40), as well as a second electric plug connector (54; 68) connected to the first electrical plug connector (52; 66) via strip conductors (54). The second electric plug connector (54; 68) serves for the electrical connection of a component situated outside the electronics housing (18).

公开(公告)号：USD901543S1

公开(公告)日：2020-11-10

申请号：US29677313

申请日：2019-01-18

Applicant: Grundfos Holding A/S

Designer： Jens Otte

公开(公告)号：US10823175B2

公开(公告)日：2020-11-03

申请号：US15767500

申请日：2016-10-10

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas Blad ,  Peter Mønster

IPC: F04D15/00 ,  F04D29/42 ,  F04D29/48 ,  F24D3/02 ,  F24D3/10 ,  F16K11/048

Abstract: A pump assembly includes an impeller (18), which for rotation is connected to an electrical drive motor (20) which can be driven in two rotation directions (A, B) and a valve (10) situated in an inlet of the pump assembly. The valve includes a valve element (48) movable between at least two switch positions and is connected for movement to a drive element (36, 60) subjected to the flow produced by the impeller (18). The valve element (48), in at least a first of the two switch positions, closes an inlet channel (44, 46) of the pump assembly (12) and is arranged such that the movement direction into this first switch position corresponds to the flow direction (S1, S2) through this inlet channel (44, 46). A hydraulic system is provided with two circuits and such a pump assembly. The valve serves as a switch-over valve between the two circuits.

公开(公告)号：US10816002B2

公开(公告)日：2020-10-27

申请号：US15776130

申请日：2016-11-16

Applicant: Grundfos Holding A/S

Inventor： Flemming Buus Bendixen ,  Alan Ivo Sogaard Sorensen

IPC: F04D13/02 ,  F04D7/06 ,  F04D13/06 ,  H02K49/10

Abstract: The present invention relates to a pump unit (300), with at least one impeller, comprising a coupling, wherein the coupling is mechanically connected to the at least one impeller via an inner rotor and where an outer rotor is connected to an electrical machine arranged to produce a rotational torque, said pump being arranged to circulate a hot fluid by the impeller. The coupling includes an outer rotor including a plurality of permanent magnets (101,201) arranged to form a plurality of magnetic poles (105, 205), and an inner rotor (110, 210), whereby the outer rotor and the inner rotor are located coaxially to one another around an axis (130, 230) and spaced apart from one another by an air gap (150,250). A rotor can (330) is arranged in the air gap (250, 150) between the inner rotor and the outer rotor, so as to make a dividing section between the inner and outer rotor. Each of the plurality of magnetic poles comprises at least a section with a radial magnetic direction in respect of the axis (130, 230) and at least a section with a magnetic direction angled between a radial direction and a tangential direction in respect of the axis (130, 230), wherein the combined length of the sides of the plurality of permanent magnets cover less than 75% of the circumference of the cylindrical structure. The outer rotor has a cylindrical structure (120, 220) surrounding the plurality of magnetic poles (105, 205), and the cylindrical structure is made of a magnetic susceptible material for conducting a magnetic flux between the plurality of magnetic poles (105, 205) The inner rotor (110, 210) is made of a magnetic susceptible material and free from permanent magnetic material, wherein the inner rotor is formed with multiple radial projections (111, 211) acting as salient inner rotor poles distributed around the axis (130, 230) of the inner rotor. The invention also relates to a coupling with the above mentioned coupling features.

公开(公告)号：US10808703B2

公开(公告)日：2020-10-20

申请号：US16060215

申请日：2016-12-07

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen Mikkelsen ,  Niels Due Jensen ,  Brian Lundsted Poulsen

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

Abstract: A multistage centrifugal pump has a foot part (2) and a head part (9), between which pump stages are integrated. The head part (9) and the foot part (2) are connected via tie-rods (11) which with one end are fastened on the head part (9) and with the other end are fastened on the foot part (2). The tie-rods (11) at one end comprise a thread (14), with which they are tightened on the head part (9). The tie-rods (11) are formed from sheet metal. At the end opposite the thread, the tie-rods include a recess, with which recess the tie-rods are each positively fixed on the foot part (2), at least in the tensile direction (22).