公开(公告)号：US20180363659A1

公开(公告)日：2018-12-20

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 with a foot part (2) and with 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 and at the other end comprise a recess (16), with which recess they are positively fixed on the foot part (2), at least one the tensile direction 22

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：US20160123329A1

公开(公告)日：2016-05-05

申请号：US14895270

申请日：2014-05-15

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN ,  Brian LUNDSTED POULSEN ,  Jens ANDERSEN GAD

IPC: F04D17/12

CPC classification number: F04D17/12 ,  F04D1/06 ,  F04D29/426 ,  F04D29/628

Abstract: A centrifugal pump (1) includes several pump stages, which are arranged axially between a head part (4) and a foot part (2). The pump stages are surrounded peripherally by an outer casing (3). An axial end of the outer casing (3) is fastened on the head part (4), and the other axial end on the foot part (2). A mechanical connection between the head part (4) and the foot part (2) is formed by the outer casing (3).

Abstract translation: 离心泵（1）包括多个泵级，其轴向布置在头部（4）和脚部（2）之间。 泵台由外壳（3）外围包围。 外壳（3）的轴向端固定在头部（4）上，另一个轴向端紧固在脚部（2）上。 头部（4）和脚部（2）之间的机械连接由外壳（3）形成。

公开(公告)号：US20190010950A1

公开(公告)日：2019-01-10

申请号：US16027509

申请日：2018-07-05

Applicant: GRUNDFOS HOLDING A/S

Inventor： Brian LUNDSTED POULSEN ,  Anders BØGE JENSEN

IPC: F04D29/046 ,  F04D1/00 ,  F16C35/02

Abstract: A pump bearing retainer (1), for a wet-running pump, includes a radially inner section (3) including an inner section surface (9) for a press-fit contact with an essentially cylinder-shaped radial outer surface (29) of a pump bearing (13). A radially outer section (7) includes an annular or essentially conical-shaped outer section surface (17) with a cone angle (θ1) equal to or larger than 45°. An intermediate section (5) extends from the inner section (3) to the outer section (7). The intermediate section (5) includes an essentially conical-shaped intermediate section surface (15) with a cone angle (θ2) smaller than 45°. A longitudinal cross-section area (A) of the inner section (3) is smaller than a longitudinal cross-section area (B) of the intermediate section (5).

公开(公告)号：US20160153469A1

公开(公告)日：2016-06-02

申请号：US14900766

申请日：2014-05-15

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN ,  Brian LUNDSTED POULSEN

IPC: F04D29/62 ,  F04D29/42 ,  F04D29/22 ,  F04D29/28 ,  F04D1/06 ,  F04D17/08

CPC classification number: F04D29/628 ,  F04D1/06 ,  F04D17/08 ,  F04D29/22 ,  F04D29/28 ,  F04D29/4206 ,  F04D29/426 ,  F04D29/4266 ,  F04D29/624

Abstract: The centrifugal pump (1) includes several pump stages which are arranged axially between a head part (4) and a foot part (2). An outer casing (3) peripherally surrounds the pump stages. An axial end of the outer casing (3) is fastened on the head part and the other axial end of the outer casing (3) is fastened on the foot part. A mechanical connection between the head part (4) and the foot part (2) is formed by the outer casing (3).

Abstract translation: 离心泵（1）包括多个泵级，其轴向布置在头部（4）和脚部（2）之间。 外壳（3）周边围绕泵级。 外壳（3）的轴向端紧固在头部上，外壳（3）的另一个轴向端紧固在脚部上。 头部（4）和脚部（2）之间的机械连接由外壳（3）形成。

公开(公告)号：US20250052246A1

公开(公告)日：2025-02-13

申请号：US18719406

申请日：2022-12-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN ,  Troels JEPSEN ,  Brian LUNDSTED POULSEN

IPC: F04D13/06 ,  F04D1/00 ,  F04D29/044 ,  F04D29/10 ,  F04D29/42

Abstract: A pump assembly includes an electric drive motor with a motor drive shaft and a rotor. The motor drive shaft extends along a rotor axis and the rotor is mechanically coupled to the motor drive shaft. A pump housing encloses an impeller that is mechanically coupled to a pump drive shaft. The pump drive shaft extends along the rotor axis. The motor drive shaft is releasably coupled to the pump drive shaft by a drive shaft coupling for transferring torque from the motor drive shaft to the pump drive shaft. The drive shaft coupling is arranged within the motor drive shaft for transferring torque from the motor drive shaft to the pump drive shaft by frictional connection. The drive shaft coupling is accessible by an elongate tool through the second axial hollow motor drive shaft drive end for selectively tightening and releasing the drive shaft coupling.

公开(公告)号：US20210180613A1

公开(公告)日：2021-06-17

申请号：US17255042

申请日：2019-06-19

Applicant: GRUNDFOS HOLDING A/S

Inventor： Brian LUNDSTED POULSEN ,  Nielas WINTHER LAUE

IPC: F04D29/62 ,  F04D1/06

Abstract: The present disclosure refers to a pump (1) comprising a rotor shaft (13) extending along a rotor axis (R), a bearing body (19) circumferentially encompassing the rotor shaft (13) and comprising a radially outer bearing surface (32), and a locking ring (25) circumferentially encompassing the rotor shaft (13) and limiting an axial movement of the bearing body (19) relative to the rotor shaft (13), wherein the locking ring (25) comprises at least two radially inwardly protruding teeth (49, 51, 53, 55), wherein the locking ring (25) is radially expandable from a locking state to a mounting state against an elastic restoring force of the locking ring (25), wherein the locking ring (25) is, in the mounting state, positionable at a desired axial position on the rotor shaft (13), wherein the teeth (49, 51, 53, 55) are configured to press, in the locking state, against a radial outer surface (31) of the rotor shaft (13) by the elastic restoring force of the locking ring (25).