EP 0845598 B1 20030507 - Method and apparatus for temperature dependent operation of pumps with helical rotors
Title (en)
Method and apparatus for temperature dependent operation of pumps with helical rotors
Title (de)
Verfahren und Vorrichtung zum temperaturabhängigen Betreiben von Pumpen mit schneckenförmigen Rotoren
Title (fr)
Procédé et appareil pour l'entraînement des pompes à rotors hélicoidaux en réponse à la température
Publication
Application
Priority
DE 19649766 A 19961130
Abstract (en)
[origin: DE19649766C1] The method involves measuring the temp. of the pumped medium in the region of the pump (10) inlet (26) and within the pump itself (24). The pump is regulated (28) according to the difference between these two temp. measurements in comparison with a predefined tolerance value. The pump is switched off if the temp. of the delivered medium within the pump rises by more than 10 per cent or 5 deg. C wrt. the temp. in the inlet region.
IPC 1-7
IPC 8 full level
F04C 14/28 (2006.01); G05D 16/02 (2006.01)
CPC (source: EP)
F04C 14/28 (2013.01); F04C 2270/22 (2013.01)
Designated contracting state (EPC)
BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
DE 19649766 C1 19980409; DE 59710030 D1 20030612; EP 0845598 A1 19980603; EP 0845598 B1 20030507
DOCDB simple family (application)
DE 19649766 A 19961130; DE 59710030 T 19971127; EP 97120796 A 19971127