公开(公告)号：US10352317B2

公开(公告)日：2019-07-16

申请号：US15049599

申请日：2016-02-22

Applicant: Xylem IP Holdings LLC

Inventor： Oliver Laing

IPC: F04B49/20 ,  G01F25/00 ,  F24D19/10 ,  G01K17/08 ,  F04D27/00 ,  G01K13/02

Abstract: A method for determining a through-flow quantity in a fluid delivery system, in which a fluid is delivered by a pump, the pump including an electromotor and the electromotor being operated at a first speed when the electromotor is in operation and the through-flow quantity being determined from a measured motor power and the speed. The method includes (i) increasing the first speed to a second speed which is greater than the first speed; (ii) determining a second through-flow quantity at the second speed from the motor power and the second speed; (iii) determining a third through-flow quantity from the second through-flow quantity by extrapolation of the second speed to the first speed, wherein the third through-flow quantity is the target variable; and, (iv) reducing the speed back to the first speed once the second through-flow quantity has been determined.

公开(公告)号：US20190277278A1

公开(公告)日：2019-09-12

申请号：US16424611

申请日：2019-05-29

Applicant: XYLEM IP HOLDINGS LLC

Inventor： Oliver Laing

IPC: F04B49/20 ,  F04D27/00 ,  F24D19/10 ,  G01K17/08 ,  G01F25/00

Abstract: A pump controller or control device for determining a through-flow quantity in a fluid delivery system, in which a fluid is delivered by a pump, the pump including an electromotor operated at a first speed when the electromotor is in operation and the through-flow quantity being determined from a measured motor power and the speed. A method of using the pump controller or control device includes (i) increasing the first speed to a second speed which is greater than the first speed; (ii) determining a second through-flow quantity at the second speed from the motor power and the second speed; (iii) determining a third through-flow quantity from the second through-flow quantity by extrapolation of the second speed to the first speed, wherein the third through-flow quantity is the target variable; and, (iv) reducing the speed back to the first speed once the second through-flow quantity has been determined.

公开(公告)号：US20160169220A1

公开(公告)日：2016-06-16

申请号：US15049599

申请日：2016-02-22

Applicant: Xylem IP Holdings LLC

Inventor： Oliver Laing

IPC: F04B49/20 ,  F04D27/00

CPC classification number: F04B49/20 ,  F04D27/004 ,  F24D19/1006 ,  F24D19/1012 ,  F24D2200/14 ,  G01F25/0007 ,  G01K17/08 ,  G01K2013/026 ,  Y02B10/20 ,  Y02B30/745

Abstract: A method for determining a through-flow quantity in a fluid delivery system, in which a fluid is delivered by a pump, the pump including an electromotor and the electromotor being operated at a first speed when the electromotor is in operation and the through-flow quantity being determined from a measured motor power and the speed. The method includes (i) increasing the first speed to a second speed which is greater than the first speed; (ii) determining a second through-flow quantity at the second speed from the motor power and the second speed; (iii) determining a third through-flow quantity from the second through-flow quantity by extrapolation of the second speed to the first speed, wherein the third through-flow quantity is the target variable; and, (iv) reducing the speed back to the first speed once the second through-flow quantity has been determined.

Abstract translation: 一种用于确定流体输送系统中的通流量的方法，其中流体由泵输送，所述泵包括电动机，并且所述电动机在所述电动机运行时以第一速度运行，并且所述通流 数量由测量的电机功率和速度确定。 该方法包括（i）将第一速度增加到大于第一速度的第二速度; （ii）从所述电动机功率和所述第二速度确定所述第二速度下的第二通流量; （iii）通过将所述第二速度外推至所述第一速度，从所述第二通流量确定第三通流量，其中所述第三通流量为所述目标变量; 和（iv）一旦确定了第二通流量，就将速度降低到第一速度。