公开(公告)号：US20150211528A1

公开(公告)日：2015-07-30

申请号：US14427359

申请日：2013-09-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Byskov Skafsgaard ,  Bent Døssing

IPC: F04D15/00 ,  F04D1/00 ,  F04D13/06

CPC classification number: F04D15/0005 ,  F04D1/00 ,  F04D13/06 ,  F04D15/0016 ,  F24D3/105 ,  F24D19/1012 ,  F24D19/1024 ,  F24D19/1066 ,  Y02B30/745

Abstract: A method controls a circulation pump (1) in an installation with at least two circulation circuits (3, 4), with which the circulation pump (1) is integrated by way of a switch-over valve (2) into the one or the other circulation circuit (3 or 4) depending on the switched position. The pump (1) is activated differently depending on the switched position of the switch-over valve (2). The switch-over procedure is detected by way of determining the pressure course and/or the flow rate course in the pump (1) or an electrical variable which is dependent thereon, of the motor driving the pump, and the pump (1) is operated in another manner accordingly.

Abstract translation: 一种方法控制具有至少两个循环回路（3,4）的设备中的循环泵（1），循环泵（1）通过该循环泵（1）通过切换阀（2）与其中的一个或 其他循环电路（3或4）取决于切换位置。 根据切换阀（2）的切换位置，泵（1）的运行方式不同。 通过确定泵（1）中的压力路线和/或流量路线或依赖于其的电动变量来检测切换过程，驱动泵的电机，泵（1）是 相应地以另一种方式操作。

公开(公告)号：US11933308B2

公开(公告)日：2024-03-19

申请号：US17550396

申请日：2021-12-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Byskov Skafsgaard ,  Susanne Hamann Gade ,  Keld Benner Valbjørn ,  Jan Carøe Aarestrup

IPC: F04D15/00 ,  F04D13/06 ,  H02P7/29

CPC classification number: F04D15/0066 ,  F04D13/06 ,  H02P7/29 ,  H02P2207/05

Abstract: A pump assembly with a pump unit comprising an impeller for pumping fluid, an electric motor for driving the impeller, a control module for controlling the speed of the electric motor in a control mode, and an interface for receiving a pulse width modulated (PWM) control signal with a duty cycle indicative of the speed of the electric motor. The control module is configured to interpret the PWM control signal at start-up of the electric motor per default in a configuration mode as a configuration bit sequence based on the duty cycle of the PWM control signal during a pre-determined configuration window.

公开(公告)号：US10900490B2

公开(公告)日：2021-01-26

申请号：US14427359

申请日：2013-09-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Byskov Skafsgaard ,  Bent Døssing

IPC: F04D15/00 ,  F24D3/10 ,  F24D19/10 ,  F04D1/00 ,  F04D13/06

Abstract: A method controls a circulation pump (1) in an installation with at least two circulation circuits (3, 4), with which the circulation pump (1) is integrated by way of a switch-over valve (2) into the one or the other circulation circuit (3 or 4) depending on the switched position. The pump (1) is activated differently depending on the switched position of the switch-over valve (2). The switch-over procedure is detected by way of determining the pressure course and/or the flow rate course in the pump (1) or an electrical variable which is dependent thereon, of the motor driving the pump, and the pump (1) is operated in another manner accordingly.