公开(公告)号：US20210396240A1

公开(公告)日：2021-12-23

申请号：US17353002

申请日：2021-06-21

Applicant: GRUNDFOS HOLDING A/S

Inventor： Alessandro IACOPONI ,  Riccardo DAL CANTO

IPC: F04D27/00 ,  F04D29/42 ,  F04D29/22 ,  F04D1/00

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).

公开(公告)号：US20210388837A1

公开(公告)日：2021-12-16

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

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：US11149964B2

公开(公告)日：2021-10-19

申请号：US16269918

申请日：2019-02-07

Applicant: GRUNDFOS HOLDING A/S

Inventor： Agisilaos Tsouvalas ,  Casper Hillerup Lyhne

IPC: F24D19/10 ,  F24F11/63 ,  G05B15/02 ,  G05D23/19

Abstract: A hydronic system (1) includes a side (3) with a first port (21) connected with a source element output (23), a second port (27) connected with a source element input (29), and a controllable primary side flow actuator (9) for providing a primary side flow (q1). Another side (5) has a third port (31) connected with a load element input (33), a fourth port (35) connected with a load element output (37), and a controllable secondary side flow actuator (13) providing a secondary side flow (q2). A transfer element (17) is connected with the first port, the second port, the third port and the fourth port. A flow control module (39) adapts a transfer element thermal power transfer by controlling the primary side flow actuator and/or the secondary side flow actuator by minimizing a signed deviation value (ΔΔv) that is correlated with the transfer element thermal power transfer.

公开(公告)号：US11143190B2

公开(公告)日：2021-10-12

申请号：US16361525

申请日：2019-03-22

Applicant: GRUNDFOS HOLDING A/S

Inventor： Gert Friis Eriksen ,  Jens Kjær Milthers

IPC: F04D13/06 ,  F04D13/16 ,  F04D15/00 ,  F04D29/12 ,  F04D29/10

Abstract: A pump assembly includes an electrical drive motor (2) and an impeller which is connected to the drive motor (2) via a shaft (14). The shaft extends between the drive motor (2) and the impeller, through a seal arrangement with a fluid reservoir (22). A method is provided for detecting a concentration change in a fluid reservoir in the seal arrangement in the pump assembly. A concentration sensor (30) detects a concentration change in the fluid reservoir (22), and a second sensor (32) detects at least one further parameter of the fluid reservoir (22). The sensors are arranged on the fluid reservoir (22). The sensors are connected to an evaluation device (22). The evaluation device (34) is configured to carry out an evaluation of at least one reading of the concentration sensor (30), taking into account at least one reading which is detected by the second sensor (32).

公开(公告)号：US20210233377A1

公开(公告)日：2021-07-29

申请号：US17054438

申请日：2019-05-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Christian SCHOU ,  Ole Hejn PJENGAARD ,  Carsten Skovmose KALLESØE

IPC: G08B21/18 ,  E03F5/22

Abstract: An alarm management module (13) is for a wastewater pumping station that includes at least one pump (9a, 9b) arranged for pumping wastewater out of a wastewater pit (1). The alarm management module (13) is configured to process at least one level variable (h) indicative of a filling level of the wastewater pit (1) and at least one capacity variable (p %, P %, C %) indicative of a pumping capacity of the wastewater pumping station. The alarm management module (13) is configured to trigger an intervention alarm only if all of the following conditions are met: a) the at least one level variable (h) is at or above a predetermined alarm level threshold (hm), b) the at least one level variable (h) is increasing, and c) the at least one capacity variable (p %, P %, C %) is below a capacity threshold.

公开(公告)号：US11073290B2

公开(公告)日：2021-07-27

申请号：US16391700

申请日：2019-04-23

Applicant: GRUNDFOS HOLDING A/S

Inventor： Søren Emil Sørensen

IPC: F24D3/10 ,  E04B5/48 ,  F16K27/00 ,  F24D3/12 ,  F24D3/14 ,  F24D3/02 ,  F24D19/10 ,  F04D15/00 ,  F16K11/00 ,  F16K11/22

Abstract: A circulation pump assembly for a heating and/or cooling system includes an electric drive motor (108) and a connected pump housing (106) in which at least one impeller (118) is situated and which comprises a first inlet (112) and a first outlet (114). The pump housing (106) includes a second inlet (122) which is connected in an inside of the pump housing (106) at a mixing point (130) to the first inlet (112). A regulating valve (134), which is designed for regulating the mixing ratio of two flows mixing at the mixing point (130), as well as a control device, which controls the regulating valve (134) for regulating the mixing ration, are arranged in the pump housing (106). A hydraulic manifold is provided with such a circulation pump assembly.

公开(公告)号：US11067086B2

公开(公告)日：2021-07-20

申请号：US15586501

申请日：2017-05-04

Applicant: GRUNDFOS HOLDING A/S

Inventor： Janus Lukas Sierakowski-Larsen ,  Ejgil Koustrup

IPC: F04D9/02 ,  F04D9/00 ,  F04D15/00 ,  F04D13/16 ,  F04D1/06 ,  F16K7/17

Abstract: A centrifugal pump (7), with one or more pumping stages, includes a pressure controlled valve (15) inside the pump (7) for supporting self-priming, the pressure controlled valve (15). The pressure controlled valve (15) includes a pretensioned leaf spring (17) and a valve seat (18). The leaf spring (17) has an opened position and a closed position. In the open position the leaf spring (17) is distanced from the valve seat (18). In the closed position the leaf spring (17) closes the valve seat (18). The leaf spring (17) and valve seat (18) are arranged for soft closing.

公开(公告)号：US20210156396A1

公开(公告)日：2021-05-27

申请号：US16494003

申请日：2017-08-03

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Peter MØNSTER

IPC: F04D29/42 ,  F04D25/06 ,  F04D29/22

Abstract: A centrifugal pump assembly includes an electric drive motor and an impeller (38; 38′), driven rotationally by the electric drive motor and arranged in a pump housing (24; 24′). The pump housing includes a first suction duct (46; 46′) that forms a first flow path from a first suction connector (44; 44′) to a suction side of the impeller. The pump housing includes a receiving chamber (50; 50′) which intersects the first suction duct, is connected to a second suction connector (58; 82; 110; 116), and in an interior includes a movable valve element (64; 90; 100; 128) connected to an actuating drive (76; 94; 105; 124) and configured to, with the movement of the valve element, change a cross-sectional ratio between the first flow path which extends from the first suction connector and a second flow path which extends from the second suction connector.

公开(公告)号：US20210121857A1

公开(公告)日：2021-04-29

申请号：US17059901

申请日：2019-05-15

Applicant: HALDOR TOPSØE A/S ,  GRUNDFOS HOLDING A/S

Inventor： Peter Mølgaard MORTENSEN ,  Flemming Buus BENDIXEN ,  Peter VALLER ,  Alexandru SOREA

IPC: B01J23/86 ,  B01J21/10 ,  B01J35/04 ,  B01J35/00 ,  B01J35/02 ,  B01J37/00 ,  B01J37/08 ,  B01J37/02 ,  B01J37/14 ,  B01J12/00 ,  B01J19/24 ,  B01J19/00 ,  C01B3/40 ,  B33Y10/00 ,  B33Y80/00 ,  B33Y40/20 ,  B22F10/18 ,  H05B1/02 ,  H05B3/42

Abstract: The invention relates to a structured catalyst for catalyzing steam methane reforming reaction in a given temperature range T upon bringing a hydrocarbon feed gas into contact with the structured catalyst. The structured catalyst comprises a macroscopic structure, which comprises an electrically conductive material and supports a ceramic coating. The macroscopic structure has been manufactured by 3D printing or extrusion and subsequent sintering, wherein the macroscopic structure and the ceramic coating have been sintered in an oxidizing atmosphere in order to form chemical bonds between the ceramic coating and the macroscopic structure. The ceramic coating supports catalytically active material arranged to catalyze the steam methane reforming reaction, wherein the macroscopic structure is arranged to conduct an electrical current to supply an energy flux to the steam methane reforming reaction. The invention moreover relates to methods of manufacturing the structured catalyst and a system using the structured catalyst.

公开(公告)号：US20210115928A1

公开(公告)日：2021-04-22

申请号：US16970559

申请日：2019-01-22

Applicant: GRUNDFOS HOLDING A/S

Inventor： Carsten NIELSEN ,  Morten ØDUM HALSE

IPC: F04D15/00 ,  F04D13/06 ,  G08C17/00

Abstract: A pump system (1) includes a first (3) of at least one pump unit (3, 5) for pumping a fluid (11). The first pump unit (3) includes a pump, an electrical drive motor and a motor control, with a pump control for commanding the motor control. A sensor (7) with a sensor housing (27) and with sensor electronics (28) are located in the sensor housing (27) for detecting at least one parameter of the fluid (11) in the pump or in a pipe which is fluid-connected to the pump The pump control is integrated into the sensor electronics (28).