EP 1138950 B1 20040107 - Pump controller
Title (en)
Pump controller
Title (de)
Pumpensteuergerät
Title (fr)
Régulateur de pompes
Publication
Application
Priority
EP 00890098 A 20000327
Abstract (en)
[origin: EP1138950A1] Pump system has at least one liquid pump, preferably a centrifugal pump, driven by an electric motor and a regulator for comparing an actual value of a liquid pump output pressure with a demand value. An output signal that varies depending on the result of the comparison and the regulator's transfer function is fed to a revolution rate regulator driving the motor. A control circuit cyclically varies at least one regulator regulation parameter. The pump system has at least one liquid pump (1), preferably a centrifugal pump, driven by an electric motor (2) and a regulator (4) for comparing an actual value of an output pressure from the liquid pump with a demand value. An output signal (4a) that varies depending on the result of the comparison and the regulator's transfer function is fed to a revolution rate regulator (3) driving the motor. A control circuit (10) cyclically varies at least one regulation parameter of the regulator.
IPC 1-7
IPC 8 full level
F04B 49/20 (2006.01); F04D 15/00 (2006.01)
CPC (source: EP)
F04B 49/20 (2013.01); F04D 15/0066 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1138950 A1 20011004; EP 1138950 B1 20040107; AT E257548 T1 20040115; DE 50004980 D1 20040212; DK 1138950 T3 20040503
DOCDB simple family (application)
EP 00890098 A 20000327; AT 00890098 T 20000327; DE 50004980 T 20000327; DK 00890098 T 20000327