EP 3931942 A1 20220105 - ROTARY ELECTRIC MACHINE WITH IMPROVED STATOR COOLING
Title (en)
ROTARY ELECTRIC MACHINE WITH IMPROVED STATOR COOLING
Title (de)
ELEKTRISCHE DREHMASCHINE MIT VERBESSERTER STATORKÜHLUNG
Title (fr)
MACHINE ÉLECTRIQUE TOURNANTE AYANT UN REFROIDISSEMENT DU STATOR AMÉLIORÉ
Publication
Application
Priority
- FR 1902099 A 20190228
- FR 2020050362 W 20200225
Abstract (en)
[origin: WO2020174180A1] The rotary electric machine (1) comprises a casing (10), a stator (40) comprising a stator body (41) secured within the casing and comprising first (411) and second (412) longitudinal end faces, notches (44) arranged and extending longitudinally within the stator body between the first and second longitudinal end faces, a coil passing longitudinally through the stator body through the notches and comprising first (43) and second (42) coil head assemblies extending in projection from at least one of the first and second longitudinal end faces of the stator body, a first chamber (15) in the shape of ring portion arranged around the first coil head assembly and a second chamber (14) in the shape of a ring portion arranged around the second coil head assembly, the first and second chambers being in fluid communication with one another by the notches, one among the first and second chambers being a coolant inlet chamber and the other among the first and second chambers being a coolant discharge chamber such that a flow of coolant between the first and second annular chambers is forced into the notches while the rotary electric machine is in operation.
IPC 8 full level
H02K 1/20 (2006.01); H02K 3/24 (2006.01); H02K 9/19 (2006.01); H02K 9/197 (2006.01)
CPC (source: EP US)
H02K 3/24 (2013.01 - EP US); H02K 9/19 (2013.01 - EP US); H02K 9/197 (2013.01 - EP)
Citation (search report)
See references of WO 2020174180A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020174180 A1 20200903; EP 3931942 A1 20220105; FR 3093388 A1 20200904; FR 3093388 B1 20210312; JP 2022529306 A 20220621; US 2022123615 A1 20220421
DOCDB simple family (application)
FR 2020050362 W 20200225; EP 20713725 A 20200225; FR 1902099 A 20190228; JP 2021551875 A 20200225; US 202017310317 A 20200225