EP 1387087 B1 20110330 - Method for determining the flow rate in a pump
Title (en)
Method for determining the flow rate in a pump
Title (de)
Verfahren zur Bestimmung der Durchflussmenge eines Fluids durch eine Pumpe
Title (fr)
Méthode pour déterminer le débit d'une pompe
Publication
Application
Priority
DE 10234630 A 20020729
Abstract (en)
[origin: EP1387087A2] During a pump's operation, a motor is switched off periodically by an electric/electronic drive. When switched off, it detects voltages (1-3) induced in the motor and uses the induced voltages detected by an analog-digital transformer to determine the amount of through-flow for a liquid by using a span of time for the induced voltages and by comparing this span with a reference curve. An independent claim is also included for a pump for conveying a liquid with a permanently excited synchronous motor in a micro-controller and electronic devices for controlling a motor.
IPC 8 full level
F04D 15/00 (2006.01)
CPC (source: EP)
F04D 15/0088 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1387087 A2 20040204; EP 1387087 A3 20091028; EP 1387087 B1 20110330; DE 10234630 A1 20040408; DE 50313576 D1 20110512
DOCDB simple family (application)
EP 03009647 A 20030430; DE 10234630 A 20020729; DE 50313576 T 20030430