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公开(公告)号：US10949979B2
公开(公告)日：2021-03-16
申请号：US15856601
申请日：2017-12-28
Applicant: GRUNDFOS HOLDING A/S
Inventor： Michael Helbo Nygaard
Abstract: A video sequence of a pump assembly or of a pump assembly part is produced. The video sequence is evaluated by way of digital signal processing assisted by a data base. A condition of the pump assembly is determined by way of this evaluation. In particular it is determined whether the pump runs in a designated manner or it is determined whether unallowably high oscillations are ascertained in a region, wherein this would indicate a defect, for example bearing damage or an unfavorable speed.
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公开(公告)号：US10941784B2
公开(公告)日：2021-03-09
申请号：US16056903
申请日：2018-08-07
Applicant: GRUNDFOS HOLDING A/S
Inventor： Erik Bundesen Svarre , John Frigård Nielsen , Lars Skov
IPC: F04D29/10 , F16J15/34 , F04D29/12 , F04D29/42 , F04D1/06 , F04D13/06 , F04D17/08 , F04D25/06 , F04D29/62
Abstract: A centrifugal pump (1) includes a pump casing and a shaft (11) which is rotatably mounted therein and on which an impeller (10), for delivering fluid, is arranged rotationally fixed. A cartridge shaft seal (13) is arranged between the shaft (11) and an opening (16) of the casing, through which opening the shaft (11) is led. The cartridge shaft seal (13) includes a sleeve (22) which surrounds the shaft (11) at least in the region of the opening 16 and which is connected to the shaft (11) releasably and rotationally fixed, by way of a clamping device (29) which is arranged on the outer side of the sleeve (22). The clamping device (29) includes clamping jaws (32) which only engage on the outer side of the sleeve (22) and non-positively connect the sleeve (22) to the shaft (11).
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公开(公告)号：US10826372B2
公开(公告)日：2020-11-03
申请号：US16306714
申请日：2017-04-07
Applicant: GRUNDFOS HOLDING A/S
Inventor： Allan Ivo Søegaard , Flemming Buus Bendixen , Alexandru Sorea , Henrik Rassmusen
Abstract: The magnetic gear includes a magnetic force generator (8), a driving shaft (1), a driven shaft (2) and a gear carrier (3) which are magnetically coupled in movement to one another. Only one magnetic force generator (8) is provided, which one magnetic force generator (8) has a north-south alignment that runs in the axis direction (111) of a shaft (1, 2) or parallel to this.
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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).
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公开(公告)号：US20200340689A1
公开(公告)日：2020-10-29
申请号：US16860260
申请日：2020-04-28
Applicant: GRUNDFOS HOLDING A/S
Abstract: A control system controls a fluid distribution system that includes consumer branches arranged in parallel. Each consumer branch includes a consumer element (31) consuming fluid and/or thermal energy, a regulating device (9) receiving a control value regulating a flow of fluid and/or thermal energy through the consumer branch, and a sensor (11) providing a measured value of the consumer branch. The control system includes a saturation calculation module (21) providing a saturation value, for each operational consumer branch, indicative of the saturation degree of the associated consumer branch, and a saturation compensation module (23) receiving the saturation values and altering a reference value. The altered reference value is based on an initial reference value and the saturation values from all consumer branches. The consumer branch regulating device, of each operational consumer branch, is controllable based on the altered reference value and the measured value of the associated consumer branch.
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Patent Agency Ranking
公开(公告)号：US20200340684A1
公开(公告)日：2020-10-29
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：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：USD884744S1
公开(公告)日：2020-05-19
申请号：US29603371
申请日：2017-05-09
Applicant: Grundfos Holding a/s
Designer： Niels Due Jensen , Steen Mikkelsen
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公开(公告)号：US20200072223A1
公开(公告)日：2020-03-05
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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公开(公告)号：US20200056614A1
公开(公告)日：2020-02-20
申请号：US16492795
申请日：2018-03-13
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 drive motor and a pump casing (12) surrounds the impeller and including two branches (27, 32, 34). A movable valve element (18) is arranged in the pump casing and is movable between two switching positions, in which the flow paths through the two branches (27, 32, 34) are opened to a different extent. The valve element (18) is configured and arranged in the pump casing (12) such that it separates a suction chamber (24) which is connected to a suction side of the impeller (14) from a delivery chamber (26) which is in connection with the delivery side of the impeller (14). The valve element (18) is mechanically and/or hydraulically coupled to the drive motor (4, 6) for at least a movement between the two switching positions.
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