公开(公告)号：US20150093253A1

公开(公告)日：2015-04-02

申请号：US14501576

申请日：2014-09-30

Applicant: GRUNDFOS HOLDING A/S

Inventor： Kim Hulegaard JENSEN ,  Lars Sund MORTENSEN ,  Jan Carøe AARESTRUP

IPC: F04D15/00 ,  F04D1/00

CPC classification number: F04D15/0077 ,  F04D15/0066 ,  H02H3/006 ,  H02H7/0833 ,  H02H7/0852 ,  H02P29/032

Abstract: A method for controlling the power limit of a pump device includes controlling the power limit of the pump device on the basis of a pump media temperature Tm and an ambient temperature Ta measured inside a control box of the pump device. A pump device, in particular a centrifugal pump, is driven by a motor. The motor is controlled by a control box wherein temperature sensors for measuring a media temperature Tm and an ambient temperature Ta are arranged in the control box so as to control the power limit of the pump device depending on the measured media temperature Tm and an ambient temperature Ta.

Abstract translation: 一种用于控制泵装置的功率极限的方法包括：根据在泵装置的控制箱内测量的泵介质温度Tm和测量的环境温度Ta来控制泵装置的功率极限。 泵装置，特别是离心泵，由电动机驱动。 电动机由控制箱控制，其中用于测量介质温度Tm和环境温度Ta的温度传感器被布置在控制箱中，以便根据测量的介质温度Tm和环境温度来控制泵装置的功率极限 Ta

公开(公告)号：US20170328579A1

公开(公告)日：2017-11-16

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

IPC: F24D19/10 ,  F24D3/10 ,  F04D15/00

CPC classification number: F24D19/1012 ,  F04D13/0686 ,  F04D15/0066 ,  F04D15/0088 ,  F24D3/10 ,  F24D19/1015 ,  F24D19/1024 ,  F24D19/1048 ,  G08B5/228 ,  H04Q9/00 ,  H04Q2209/43 ,  Y02B30/745

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.

公开(公告)号：US20160169239A1

公开(公告)日：2016-06-16

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 ,  F24J2/34 ,  F24J2/40 ,  F04D15/00

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).

Abstract translation: 循环泵组件（2）包括电驱动马达（6）和集成在循环泵组件（2）中的控制装置（10）。 至少一个内部温度传感器（16）布置在循环泵组件（2）中并且检测由循环泵组件（6）输送的介质的温度，并向控制装置（10）发出相应的温度信号（42） ）。 控制装置（10）基于内部温度传感器（16）的温度信号（42）构成，以大致确定连接到循环的液体存储装置（26）中的液体的温度 泵组件（2）经由加热回路（28）。

公开(公告)号：US20240376897A1

公开(公告)日：2024-11-14

申请号：US18684159

申请日：2022-08-11

Applicant: GRUNDFOS HOLDING A/S

Inventor： Lars Sund MORTENSEN ,  Kim Hulegaard JENSEN

IPC: F04D15/00 ,  F04D13/06 ,  G01F1/06

Abstract: A computer-implemented method for determining a forward flow rate of fluid flow through a pump, the pump comprising an impeller and a pump motor, the forward flow rate being responsive to the impeller being driven by the pump motor to rotate in a forward direction and at a forward speed, the method comprising: obtaining an observed reverse power of the pump motor when the pump motor is operated to drive the impeller in a reverse direction, opposite the forward direction, and at a reverse speed; computing an estimate of the forward flow rate from at least the observed reverse power.

公开(公告)号：US20240210268A1

公开(公告)日：2024-06-27

申请号：US18259616

申请日：2021-12-20

Applicant: Grundfos Holding A/S

Inventor： Daniel Hagen ROSENRING ,  Lars Sund MORTENSEN

IPC: G01M3/26

CPC classification number: G01M3/26

Abstract: A method for detecting leakage in a fluid system, comprising: receiving a pressure signal indicative of measured pressure values of a pressure in the fluid system measured at different points in time; determining a first filtered pressure signal indicative of variations of the measured pressure values over a first time scale; determining a second filtered pressure signal indicative of variations of the measured pressure values over a second time scale, shorter than the first time scale; outputting a leakage warning based on a comparison of the first filtered pressure signal and the second filtered pressure signal.