公开(公告)号：US10823183B2

公开(公告)日：2020-11-03

申请号：US15384603

申请日：2016-12-20

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Bundesen Svarre ,  Jan Carøe Aarestrup ,  Peter Elvekjær ,  Flemming Munk

IPC: F04D27/00 ,  F04D13/06 ,  F01D5/02 ,  F04D1/06 ,  F04D15/00 ,  F04D17/08 ,  F04D29/043 ,  F04D29/053 ,  F04D29/22 ,  F04D29/28

Abstract: A centrifugal pump includes at least one pump stage (14). This pump stage (14) includes an impeller (18) which is mounted rotationally fixed on a pump shaft (26). Apart from the pump stage (14), the centrifugal pump is equipped with a turbine wheel (32) which is arranged on the pump shaft (26), without a movement coupling to the pump shaft, in the delivery flow of the centrifugal pump. This turbine wheel (32) forms a transducer of a flow measuring device. A blading of the turbine wheel (32) is such that a torque exerted by the delivery flow onto the turbine wheel (32′) is directed counter to a torque exerted via the pump shaft (26) onto the impeller (18).

公开(公告)号：US09910002B2

公开(公告)日：2018-03-06

申请号：US14483353

申请日：2014-09-11

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Munk

IPC: G01R27/08 ,  G01N27/06 ,  F04D15/02 ,  G01N29/032

CPC classification number: G01N27/06 ,  F04D15/0218 ,  G01N29/032

Abstract: The dry running detection system for a pump includes an ultrasonic transducer (8) designed for arrangement inside a pump housing (24) and electrically connected to a frequency generator (2) producing an electrical signal having a predefined frequency. An analyzing unit (10) of the system analyzes the electrical signal applied to the ultrasonic transducer (8) and is designed to detect whether the ultrasonic transducer (8) is in contact with a liquid or not on basis of the signal level of the electrical signal.

公开(公告)号：US10288124B2

公开(公告)日：2019-05-14

申请号：US14913796

申请日：2014-06-10

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Munk

IPC: F16D3/10

Abstract: A coupling has an input-side coupling part (1) and an output-side coupling part (2), which are connected to each other in a torque-transmitting manner in such a way that the coupling parts can be moved to a limited extent. The output-side coupling part (2) has a rod-shaped body (10) rigidly connected to the output-side coupling part, which rod-shaped body extends in the direction of the axis of rotation (9) of the coupling and is surrounded by a hollow body (5) rigidly connected to the other coupling part (1). Sensor elements (11, 12) are provided, by which the radial distance between the rod-shaped body (10) and the hollow body (5) is detected during the rotation of the coupling.

公开(公告)号：US11867186B2

公开(公告)日：2024-01-09

申请号：US17291144

申请日：2019-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Michael Helbo Nygaard ,  Flemming Munk ,  Søren Kjeldsen

IPC: F04D15/00 ,  F04D1/06

CPC classification number: F04D15/0088 ,  F04D1/06

Abstract: A sensor arrangement is for monitoring a circulation pump system (1) which includes at least one pump (3). The sensor arrangement includes a first vibration sensor (5) installed at a first pump part (11) of one of the at least one pump (3) and a second vibration sensor (7) installed at a second pump part (13) of the pump (3) and an evaluation module (9). The first pump part (11) and the second pump part (29) have a distance to each other. The evaluation module (9), is configured to discriminate between at least two of k≥2 different types of faults based on comparing first signals received from the first vibration sensor (5) and second signals received from the second vibration sensor (7).

公开(公告)号：US10316849B2

公开(公告)日：2019-06-11

申请号：US15519685

申请日：2014-10-15

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Munk ,  Casper Lyngesen Mogensen ,  Jan Carøe Aarestrup

IPC: G06F19/00 ,  F04D15/00 ,  F04D13/06 ,  F04D29/046 ,  F04D29/66 ,  G01H17/00 ,  F04D29/043 ,  G01M99/00

Abstract: A method for detecting faults or operational parameters in a pump assembly by use of a handheld communication device is described. The pump assembly includes an electric motor and a pump, wherein the pump assembly or electric motor has at least one rotating shaft The method comprises the steps of: a) contactless measuring a sound signal emanating from the pump assembly by use of a microphone connected to or implemented in the handheld communication device, b) processing the measured sound signal, and c) recognising one or more sound emanating condition including any possible faults by way of the processed sound signal.