公开(公告)号：US20200018491A1

公开(公告)日：2020-01-16

申请号：US16483999

申请日：2018-01-31

Applicant: GRUNDFOS HOLDING A/S

Inventor： Thomas BLAD ,  Peter MØNSTER

IPC: F24D19/10 ,  F24H9/14 ,  F24D3/02

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.

公开(公告)号：US10533674B2

公开(公告)日：2020-01-14

申请号：US15293942

申请日：2016-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Janus Lukas Sierakowski-Larsen

IPC: F16K27/02 ,  F04D29/42 ,  F04D13/06 ,  F04D13/16 ,  F04D15/00 ,  F16K15/06 ,  F04D1/06 ,  F04D29/62

Abstract: A non-return valve (19) for a water supply system (1) or a pump (4) is integrated in a flow channel (14) of the water supply system (1). The non-return valve (19) includes a sealing body (21) which is mounted within the channel (14), blocks the channel (14) in a first position forming the closure position and releases the channel (14) in a second position forming the opened position. The sealing body (21) is movably arranged on a holder (31) which includes a closure body (15), with which the holder (31) is releasably fastened in a housing opening.

公开(公告)号：US10527294B2

公开(公告)日：2020-01-07

申请号：US15029309

申请日：2013-10-14

Applicant: Grundfos Holding A/S

Inventor： Casper Hillerup Lyhne

IPC: F24D19/10

Abstract: The present invention relates to a method for controlling a pump for feeding fluid (F) into a heating system (1000). The heating system has a hot fluid tank (HFT) receiving fluid from an associated fluid reservoir line (5) with an incoming fluid mass flow rate (dmcw/dt). A pump (P) receives fluid from the line, and pumps the received fluid with a mass flow rate (dmc/dt). A heat exchanging unit (HX) transfers heat (Q) to the fluid (F) from a medium (R). The transferred heat (Q) is maximized by controlling the pump (P1) in response to this information indicative of the transferred heat (Q), the fluid mass flow rate delivered by the pump thereby having a minimum as a function of the incoming fluid mass flow rate (dmcw/dt) when maximizing the transferred heat. The invention provides significantly improved heat transfer to the fluid and power savings for the pump. The invention also relates to a heating system, e.g. a heat pump system.

公开(公告)号：US10508656B2

公开(公告)日：2019-12-17

申请号：US14892727

申请日：2014-04-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Lars Sund Mortensen ,  Kim Hulegaard Jensen

IPC: F04D27/00 ,  F24S50/40 ,  F04D15/00 ,  F24D17/00

Abstract: A circulation pump assembly (2) includes an electric drive motor (6) and a control device (10) integrated into the circulation pump assembly (2). At least one internal temperature sensor (16) is arranged in the circulation pump assembly (2) and detects the temperature of the medium delivered by the circulation pump assembly (6) and issues a corresponding temperature signal (42) to the control device (10). The control device (10) is configured, on the basis of the temperature signal (42) of the internal temperature sensor (16), to approximately determine the temperature of the liquid in a liquid storage means (26) which is connected to the circulation pump assembly (2) via a heating circuit (28).

公开(公告)号：US10480968B2

公开(公告)日：2019-11-19

申请号：US15392289

申请日：2016-12-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Carsten Skovmose Kallesøe

IPC: G01F1/34 ,  E03F5/10 ,  F04D13/06 ,  F04D13/16 ,  F04D15/00

Abstract: A pump system has at least one fluid container (2) which comprises an inlet (4) and an outlet (6), at least one pump (8) arranged in the inlet (4) or the outlet (6), and a control device (16) which includes a flow evaluation device for determining a flow through the fluid container (2) of the pump system. The flow evaluation device is configured such that the flow evaluation device uses a system model for determining the flow. The system model includes at least two different sub-models, a sub-model which describes the inflow behavior of the fluid container (2) and a sub-model which describes the outflow behavior of the fluid container (2). A corresponding pump flow evaluation method is provided.

公开(公告)号：US10361649B2

公开(公告)日：2019-07-23

申请号：US15938302

申请日：2018-03-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Klaus Vestergaard Kragelund ,  Jan Plougmann ,  Jan Carøe Aarestrup

IPC: F04B17/03 ,  H02P27/04 ,  F04D15/00 ,  F04D13/06 ,  H02P27/08 ,  H02P27/06

Abstract: A pump assembly (1) includes a pump unit (2), an electrical drive motor (203) for driving the pump unit (2), and a control unit (201) for controlling the drive motor (203). The control unit (201) includes a frequency converter (209), a voltage converter (207) and a controller (211). The voltage converter (207) is configured to provide an input voltage (Uin) to the frequency converter (209). The input voltage (Uin) is adjustable within a voltage range between a minimum input voltage (Umin) and a maximum input voltage (Umax). The controller (211) is configured to determine an actual power consumption of at least one of the drive motor (203), the frequency converter (209) and the voltage converter (207) during operation of the pump unit (2). The controller (211) is further configured to tune the input voltage (Uin) depending on the determined actual power consumption during operation of the pump unit (2).

公开(公告)号：US10316849B2

公开(公告)日：2019-06-11

申请号：US15519685

申请日：2014-10-15

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Munk ,  Casper Lyngesen Mogensen ,  Jan Carøe Aarestrup

IPC: G06F19/00 ,  F04D15/00 ,  F04D13/06 ,  F04D29/046 ,  F04D29/66 ,  G01H17/00 ,  F04D29/043 ,  G01M99/00

Abstract: A method for detecting faults or operational parameters in a pump assembly by use of a handheld communication device is described. The pump assembly includes an electric motor and a pump, wherein the pump assembly or electric motor has at least one rotating shaft The method comprises the steps of: a) contactless measuring a sound signal emanating from the pump assembly by use of a microphone connected to or implemented in the handheld communication device, b) processing the measured sound signal, and c) recognising one or more sound emanating condition including any possible faults by way of the processed sound signal.

公开(公告)号：US10247202B2

公开(公告)日：2019-04-02

申请号：US13721243

申请日：2012-12-20

Applicant: Grundfos Holding a/s

Inventor： Steen Mikkelsen

IPC: F04D1/00 ,  F04D29/62 ,  F04D1/06 ,  F04D29/42

Abstract: A centrifugal pump (1) includes at least one pump stage (2) and a first housing part (3) having a suction connection (5). A second housing part (6) has a pressure connection (7). At least one intermediate housing part (10) at least in sections delimits a channel (11) leading to a pressure side of the at least one pump stage (2). The pump further includes a third housing part (20). The second housing part (6) and the at least one intermediate housing part (10) are arranged between the first and the third housing part (3, 20). The at least one intermediate housing part (10) and the second housing part (6) are configured to be arranged in at least two different positions with respect to the first and the third housing (3, 20).

公开(公告)号：US20190010950A1

公开(公告)日：2019-01-10

申请号：US16027509

申请日：2018-07-05

Applicant: GRUNDFOS HOLDING A/S

Inventor： Brian LUNDSTED POULSEN ,  Anders BØGE JENSEN

IPC: F04D29/046 ,  F04D1/00 ,  F16C35/02

Abstract: A pump bearing retainer (1), for a wet-running pump, includes a radially inner section (3) including an inner section surface (9) for a press-fit contact with an essentially cylinder-shaped radial outer surface (29) of a pump bearing (13). A radially outer section (7) includes an annular or essentially conical-shaped outer section surface (17) with a cone angle (θ1) equal to or larger than 45°. An intermediate section (5) extends from the inner section (3) to the outer section (7). The intermediate section (5) includes an essentially conical-shaped intermediate section surface (15) with a cone angle (θ2) smaller than 45°. A longitudinal cross-section area (A) of the inner section (3) is smaller than a longitudinal cross-section area (B) of the intermediate section (5).

公开(公告)号：US20180372106A1

公开(公告)日：2018-12-27

申请号：US16017116

申请日：2018-06-25

Applicant: GRUNDFOS HOLDING A/S

Inventor： Lars ØSTERGAARD ,  Brian Nonbo JENSEN

IPC: F04D13/10 ,  F04D29/40 ,  F04D29/60 ,  E21B43/12

Abstract: A submersible downhole pump (1) includes an elongate pump unit (3) defining a longitudinal pump axis (L) and a pump unit diameter (D), and at least one cable lug (13) for attaching a cable. The at least one cable lug (13) is connected to the pump unit (3) and pivotable around a pivot axis (P) perpendicular to the longitudinal axis (L) between a defined first position and a defined second position. The at least one cable lug (13) is positioned, in the first position, fully within the pump unit diameter (D). In the second position, the at least one cable lug (13) is positioned at least partially protruding outside the pump unit diameter (D).