EP 0615070 B1 19970514 - Plant with a pump unit for circulating heated liquid within the plant
Title (en)
Plant with a pump unit for circulating heated liquid within the plant
Title (de)
Anlage mit Pumpeneinheit zum Umwälzen einer Beheizten Flüssigkeit
Title (fr)
Installation avec unité de pompage pour la circulation d'un liquide échauffé
Publication
Application
Priority
DK 27393 A 19930310
Abstract (en)
[origin: EP0615070A1] In a plant comprising a pump unit for circulating heated liquid within the plant, said pump unit comprising a liquid pump (1,2,3,5) driven by an electric motor (4,6,7), the operating economy is improved by cooling the electric motor by circulating a part-flow of the heated liquid circulated by the liquid pump in a cooling jacket (8) provided in the electric motor (4,6,7). A further improvement is achieved by thermally insulating (10) the electric motor (4,6,7) and the liquid pump (1,2,3,5) from the surroundings, so that the heat losses from the electrical components are utilized for heating the liquid being circulated. <IMAGE>
IPC 1-7
IPC 8 full level
F04D 13/06 (2006.01); F04D 29/58 (2006.01)
CPC (source: EP)
F04D 13/06 (2013.01); F04D 29/588 (2013.01); F04D 29/5893 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0615070 A1 19940914; EP 0615070 B1 19970514; AT E153108 T1 19970515; DE 69403121 D1 19970619; DE 69403121 T2 19970918; DK 169001 B1 19940725; DK 27393 A 19940725; DK 27393 D0 19930310
DOCDB simple family (application)
EP 94103335 A 19940304; AT 94103335 T 19940304; DE 69403121 T 19940304; DK 27393 A 19930310