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公开(公告)号：US10746415B2
公开(公告)日：2020-08-18
申请号：US14513771
申请日：2014-10-14
Applicant: GRUNDFOS HOLDING A/S
Inventor： Erik Baasch Sørensen , Hakon Børsting , Thomas Blad
Abstract: A method for adjusting the setpoint temperature of a heat transfer medium circulating in a heating or cooling system (9) inside a building or at least inside a surrounding part of a building. The heating or cooling circuit includes a plurality of heat transferring units, each with a temperature controlled valve. A sum opening degree (OD) of all temperature controlled valves is determined in a time dependent manner and a setpoint temperature Tw,ref of heat transferring medium is controlled according to a predetermined sum opening degree (OD) of all temperature controlled valves. A heating system (9) is provided for supplying heat to a building or a part of the building via a liquid heat transfer medium circulated in a circuit. The heating system (9) includes heat transferring units, each being equipped with a temperature controlled valve. The system is controllable according to the method for adjusting the setpoint temperature.
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公开(公告)号：US11359822B2
公开(公告)日：2022-06-14
申请号：US16635787
申请日：2018-08-02
Applicant: GRUNDFOS HOLDING A/S
Inventor： Thomas Blad , Christian Blad
Abstract: A circulation pump assembly includes a first inlet (84), an outlet (80), an electric drive motor (30) and at least one impeller (68; 100) driven by the drive motor (30). The circulation pump assembly has at least one first flow path (26; 48) positioned in a connection between the first inlet (84) and the outlet (80) for increasing the pressure of a fluid. The circulation pump assembly has a second inlet (86). The at least one impeller (68; 100) has at least one second flow path (28; 50) for increasing the pressure of a fluid, which is positioned in a connection of the second inlet (86) to the outlet (80). A heating system is provided having a circulation pump assembly of this type.
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公开(公告)号：US10539142B2
公开(公告)日：2020-01-21
申请号：US14392246
申请日：2014-06-25
Applicant: GRUNDFOS HOLDING A/S
Inventor： Thomas Blad
IPC: F04D29/042 , F04D13/06 , F04D15/00 , F04D29/42
Abstract: A centrifugal pump assembly has an electric drive motor (2) and at least one impeller (10; 10′), which is movable in an axial direction (X) between at least two functional positions. In one functional position a flow path through the impeller (10; 10′) is essentially closed and in another functional position the flow path through the impeller (10; 10′) is opened. The impeller (10; 10′) in a first functional position is held by a magnetic force (FM) or a spring force and in a second functional position is held by a hydraulic force (FH) produced by a delivered fluid. An impeller is provided for the centrifugal pump assembly.
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公开(公告)号：US10024324B2
公开(公告)日：2018-07-17
申请号：US14368852
申请日：2012-12-19
Applicant: Grundfos Holding a/s
Inventor： Thomas Blad
IPC: F04D13/06 , F04D29/041 , F04D29/049 , F04D29/16 , F04D29/042 , F04D29/047
Abstract: A pump assembly includes an electric drive motor having a stator and a permanent magnet rotor, at least one impeller connected to the rotor via a rotor shaft, a thrust bearing accommodating axial forces acting on the impeller and rotor shaft in operation, and at least one radial bearing arranged on the rotor shaft. The rotor and stator are designed such that a magnetic axial force, acting in the direction of the rotation axis of the rotor and acting on the rotor in the direction of the inflow direction into the impeller, is produced between the rotor and the stator. The rotor shaft and rotor are mounted displaceably in the axial direction relative to the stator, and with an axial displacement of the rotor shaft in the inflow direction into the impeller, the bearing surfaces of the radial bearing lying opposite one another at least partly disengage.
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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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Patent Agency Ranking
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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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
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.
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公开(公告)号：US10677249B2
公开(公告)日：2020-06-09
申请号：US15538470
申请日：2015-12-16
Applicant: Grundfos Holding A/S
Inventor： Thomas Blad , Christian Blad
Abstract: A hydraulic system includes a circulation pump assembly (2) provided with a speed controller (4, 26), a hydraulic circuit (A, B) connected to the circulation pump assembly (2) as well as a mechanical switch device (86, 88; 120, 122; 120″, 122″) which is subjected to pressure from a fluid in the hydraulic circuit (A, B) and which can be moved into at least two different switch positions. The mechanical switch device (28; 86, 28; 120, 122) can be moved by the circulation pump assembly (2) by way of a hydraulic coupling via the fluid. The speed controller is configured to initiate a movement of the switch device (86, 88; 120, 122; 120″, 122″) by way of at least one hydraulic force acting thereon and causing a movement of the switch device (86, 88; 120, 122; 120″, 122″), produced via the hydraulic circuit, via a speed adaptation of the circulation pump assembly.
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公开(公告)号：US10443860B2
公开(公告)日：2019-10-15
申请号：US15538491
申请日：2015-12-16
Applicant: Grundfos Holding A/S
Inventor： Thomas Blad , Christian Blad
Abstract: A hydraulic system includes at least one circulation pump assembly (2) provided with a speed controller (26), at least one hydraulic circuit (A, B) connected to the circulation pump assembly (2) as well as at least one mechanical switch device (86, 88; 120, 122) which is mechanically subjected to pressure by a fluid in the hydraulic circuit (A, B) and which can be moved into at least two different switch positions. The mechanical switch device (86, 88; 120, 122) moves by the circulation pump assembly (2) hydraulic coupling via the fluid. The speed controller is configured to initiate a movement of the switch device (86, 88; 120, 122), by at least one hydraulic force acting upon the switch device (86, 88; 120, 122) and causing a movement of the switch device (86, 88; 120; 122) via the hydraulic circuit, via a speed adaptation of the circulation pump assembly (2).
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公开(公告)号：US11555499B2
公开(公告)日：2023-01-17
申请号：US16492755
申请日：2018-03-12
Applicant: GRUNDFOS HOLDING A/S
Inventor： Thomas Blad
Abstract: A centrifugal pump assembly includes an electrical drive motor (4, 6), an impeller (14) which is driven by the electrical drive motor (4, 6) as well as with at least one valve element (18) which is directly or indirectly movable along a first movement path between at least two switching positions, by the electrical drive motor (4, 6). At least a part of the valve element (18) is additionally movable along a second movement path which is different to the first movement path, between a released position, in which the valve element is distanced to at least one contact surface and a bearing position, in which the valve element bears on the at least one contact surface.
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