公开(公告)号：US12258970B2

公开(公告)日：2025-03-25

申请号：US18560339

申请日：2022-05-09

Applicant: GRUNDFOS HOLDING A/S

Inventor： Christoffer Nedergaard ,  Kurt Laursen ,  Martin Lindemann ,  Henrik Duch Simonsen

IPC: F04D15/00 ,  F04D29/42 ,  G01F1/075

Abstract: The centrifugal pump includes a flow measuring device (3) adapted to measure a delivery flow through the pump by means of a turbine wheel (32) including at least one permanent magnet (42). The flow measuring device includes at least one magnetic flux sensor (50, 51) arranged in a sensor housing (48) mounted in an outer wall of the pump casing (2). A rotatable disc (52) is fixed on a pump shaft and includes at least one permanent magnet (53). The flow measuring device is adapted to measure the delivery flow on the basis of a first measurement signal generated by the at least one magnetic flux sensor as a result of the rotation of the turbine wheel and to include in the measurement of the delivery flow a second measurement signal generated by the at least one magnetic flux sensor as a result of the rotation of the rotatable disc.

公开(公告)号：US11879445B2

公开(公告)日：2024-01-23

申请号：US16884594

申请日：2020-05-27

Applicant: GRUNDFOS HOLDING A/S

Inventor： Carsten Nielsen ,  Christoffer Nedergaard ,  Kjeld Vinther Jacobsen ,  Karsten Dyrbye ,  John Jessen Gammelgaard

IPC: F04B17/04 ,  F04D13/06 ,  F04D15/00 ,  F04D29/62 ,  F04D29/64 ,  F04D13/08 ,  G01D11/24 ,  E21B17/02 ,  E21B47/008 ,  E21B47/017

CPC classification number: F04B17/04 ,  E21B17/0283 ,  E21B47/008 ,  E21B47/017 ,  F04D13/0686 ,  F04D13/0693 ,  F04D13/08 ,  F04D15/0088 ,  F04D29/628 ,  F04D29/648 ,  G01D11/245 ,  F05D2270/80

Abstract: A submersible pump assembly (1) includes a submersible pump (2) with a housing (3), and a sensor capsule (4) with a hermetically sealed casing (5). The sensor capsule (4) is releasably mountable at a sensor position (6) located at an outer face (7) of the housing (3) of the submersible pump (2). The submersible pump (2) includes a primary coil (8) within the housing (3). The sensor capsule (4) includes a secondary coil (9) within the casing (5). The primary coil (8) and the secondary coil (9) are arranged to be inductively coupled with each other for wirelessly transferring data and/or power through the housing (3) and the casing (5) when the sensor capsule (4) is mounted at the sensor position (6).