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公开(公告)号：US11746795B2
公开(公告)日：2023-09-05
申请号：US17353002
申请日：2021-06-21
Applicant: GRUNDFOS HOLDING A/S
Inventor： Alessandro Iacoponi , Riccardo Dal Canto
CPC classification number: F04D27/008 , F04D1/00 , F04D1/06 , F04D9/005 , F04D9/02 , F04D15/0005 , F04D29/22 , F04D29/426
Abstract: A centrifugal pump device has at least one impeller (16), a circulation connection between a delivery side (22) of the at least one impeller (16) and a suction side (20) of the at least one impeller (16), and a valve arrangement (30, 46) in said circulation connection (44, 54). The valve arrangement (30, 46) has a first valve mode providing a pressure dependent shut-off valve (46) in the circulation connection. The valve arrangement (30, 46) allows a change between the first valve mode and at least one further valve mode. The at least one further valve mode provides at least one fixed closing degree of the circulation connection (44, 54).
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公开(公告)号：US11719258B2
公开(公告)日：2023-08-08
申请号：US17255042
申请日：2019-06-19
Applicant: GRUNDFOS HOLDING A/S
Inventor： Brian Lundsted Poulsen , Nielas Winther Laue
IPC: F16C35/06 , F04D29/62 , F04D1/06 , F04D29/041
CPC classification number: F04D29/628 , F04D1/063 , F04D29/0413 , F05B2240/52
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).-
公开(公告)号：US20230221682A1
公开(公告)日：2023-07-13
申请号：US17927346
申请日：2021-05-21
Applicant: Grundfos Holding A/S
IPC: G05B13/02
CPC classification number: G05B13/0265 , G05B13/024
Abstract: A method for controlling operation of a fluid transport system by applying a self-learning control process. The method includes: receiving obtained values of input signals during operation of the system during a first period of time, which is controlled by a predetermined control process, automatically selecting a subset of the input signals based on the received obtained values of the input signals, receiving obtained values of at least the selected subset of input signals during a second period of time, which is controlled by applying the self-learning control process, which is configured to control operation based only on the selected subset of input signals, and wherein applying the self-learning control process includes updating the self-learning control process based on the received obtained values of the selected subset of the input signals and based on at least an approximation of a performance indicator function.
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公开(公告)号：US11680571B2
公开(公告)日：2023-06-20
申请号：US16980023
申请日：2019-03-12
Applicant: GRUNDFOS HOLDING A/S
Inventor： Thomas Blad , Christian Blad , Peter Mønster
CPC classification number: F04D15/0016 , F04D1/00 , F04D13/06 , F04D13/0606 , F04D15/0005 , F04D15/0022 , F04D15/0038 , F04D15/0066 , F04D29/026 , F04D29/4293 , F04D29/486 , F24D3/105 , F05D2250/51 , F05D2300/501 , F24D2220/0207
Abstract: A centrifugal pump assembly includes an electric drive motor (6, 8), a driven impeller (14) and a pump casing (2) which surrounds the impeller (14). A movable element (24; 24′) is arranged a valve element. A section of the valve element is movable from a released position into a bearing position, fixed on a contact surface (60), by pressure which is produced by the impeller in the pump casing. A control device (64) moves the valve element from one switching position into another switching position and reduces the speed of the drive motor. Upon pressure in the pump casing dropping such that the valve element is no longer fixed on the contact surface and the valve element has been moved into the other switching position, the control device increases the speed of the drive motor again. A method for moving a valve element is provided.
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公开(公告)号：US11555617B2
公开(公告)日：2023-01-17
申请号：US16483999
申请日：2018-01-31
Applicant: GRUNDFOS HOLDING A/S
Inventor： Thomas Blad , Peter Mønster
Abstract: A hydraulic construction unit for a heating facility or air-conditioning facility, includes a return connection (20) and a first feed connection (16) for a heating circuit (6), with a heat source outlet (12) fluid conducting connected to the return connection. A heat source inlet (14) is fluid conducting connected to the first feed connection and to a circulation pump assembly (28) in a flow path between the return connection and the heat source outlet (12) or in a flow path between the heat source inlet and the first feed connection. A second feed connection (18) for a second heating circuit (8), is fluid conducting connected to the heat source inlet and to the return connection. A mixing valve (54) is arranged in a flow path from the heat source inlet to the second feed connection and/or in a flow path from the return connection to the second feed connection.
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Patent Agency Ranking
公开(公告)号：US20220410261A1
公开(公告)日：2022-12-29
申请号：US17781640
申请日：2020-12-03
Applicant: Grundfos Holding A/S
Inventor： Flemming Buus Bendixen , Peter Valler , Alexandro Sorea , Henrik Rasmussen
Abstract: The invention relates to a method of manufacturing a composite component (21) having a varying electric resistivity along a longitudinal direction of the component. At least a first paste (10a) having a first composition, and at least a second paste (10b) having a second composition are prepared. The pastes are transferred into a supply chamber (35) of a processing equipment (31), such as an extruder. A green body (20) is shaped by forcing the pastes from the supply chamber through a die (32), and the green body is then sintered or oxidized to form the composite component. The pastes may comprise metal powder, ceramic powder, and binder. The varying electric resistivity may be due to variations in one or more of the following parameters: the volume ratio between the metal powder and the ceramic powder, the size of the ceramic particles, and the type of the ceramic material.
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公开(公告)号：US20220373995A1
公开(公告)日：2022-11-24
申请号：US17619915
申请日：2020-06-16
Applicant: Grundfos Holding A/S
IPC: G05B19/416 , G06N20/00 , H04L51/02
Abstract: The present invention relates to a computer implemented system configured for controlling and monitoring of a pump, the system comprising a pump system, at least one sensor providing an operating state data signal representative of a mechanical, fluidicly, electrical operating state and/or other system data of the pump and/or pump system and a control module controlling the mechanical, fluidicly and/or operating state of the pump in response to a received control signal. The invention also comprises a digital twin module being configured for retrieving said operating state data signal and store the data in the IoT database.
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公开(公告)号：US20220336135A1
公开(公告)日：2022-10-20
申请号：US17763874
申请日：2020-09-25
Applicant: GRUNDFOS HOLDING A/S
Abstract: A magnetizer including a housing, a passage arranged inside the housing, and a permanent magnet assembly arranged outside the passage to provide a magnetic field passing through the passage. The housing defines an inlet to the passage and an outlet from the passage such that an object to be magnetised can be inserted into the passage via the inlet in the housing and removed via the outlet in the housing. The passage includes a uniform portion where opposing surfaces of the permanent magnet assembly are arranged a uniform distance apart along the length of the uniform portion and a diverging portion arranged between one end of the uniform portion of the passage and the outlet of the housing.
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公开(公告)号：US11365891B2
公开(公告)日：2022-06-21
申请号：US15532278
申请日：2015-03-10
Applicant: Grundfos Holding A/S
Inventor： Carsten Skovmose Kallesøe , René Stig Bergqvist , Lars Sund Mortensen
Abstract: A method of balancing a heating system with a flow system, including a supply flow line (60) and a return flow line (70), a heat source (55) and a pump (10) hydraulic lines (L1-Ln), some having a heating element (H1-Hn) with a balancing valve (V1-Vn). The method includes: carrying out one or more measurements by opening one hydraulic line only and determining a flow rate through the pump and a pressure difference across the pump, establishing a hydraulic model based on the determined flow rate and pressure difference from at least two measurements from step, and at least one additional measurement for at least two hydraulic lines, specifying a desired flow rate for each of the hydraulic lines, and adjusting one or more of the dedicated balancing valves in order to meet the desired flow rate for each of the hydraulic lines by using the hydraulic model.
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公开(公告)号：US20220010901A1
公开(公告)日：2022-01-13
申请号：US17369696
申请日：2021-07-07
Applicant: Grundfos Holding A/S
Inventor： Per HOVMAND
Abstract: A sealing ring provides a fluid seal between a first flange and a second flange. The sealing ring forms a tubular element and includes a tapering wall member defining an interior funnel-shaped through-going opening extending axially and tapering from a proximal end to a distal end. The tapering wall member is made from a resilient material proving an axial deflection of the tapering wall member when exposed to an axial force.
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