US 12,445,015 B2
Rotary electrical machine and stator assembly for such machine
Francis Bienaime, Mont Saint-Aignan (FR); Eduardo Carrasco, Saint Etienne sous Bailleul (FR); Alain Boulier, Villegats (FR); and Julien Boisson, Gaillon (FR)
Assigned to SKF Magnetic Mechatronics, Saint-Marcel (FR)
Filed by SKF Magnetic Mechatronics, Saint-Marcel (FR)
Filed on Aug. 31, 2022, as Appl. No. 17/900,174.
Claims priority of application No. 21194722 (EP), filed on Sep. 3, 2021.
Prior Publication US 2023/0072165 A1, Mar. 9, 2023
Int. Cl. H02K 9/10 (2006.01); H02K 1/04 (2006.01); H02K 5/20 (2006.01); H02K 7/09 (2006.01); H02K 21/14 (2006.01)
CPC H02K 9/10 (2013.01) [H02K 1/04 (2013.01); H02K 7/09 (2013.01); H02K 21/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A stator assembly that facilitates sealing and cooling, comprising:
a stator located in a casing and provided with windings;
a casing delimiting a hermetic chamber, comprising:
a first section, wherein a hole within the first section at least partially defines axial sides of the hermetic chamber, and
a second section that defines a top of the hermetic chamber;
an overmolded element that is overmolded onto the stator;
a plurality of laminations located on the stator;
wherein the overmolded element is overmolded onto the windings and the laminations;
wherein a portion of the overmolded element is coaxial with the first section of the casing, and the overmolded element partially extends radially outwardly further than the first section of the casing; and
a cooling element axially overlapping the stator, the cooling element having spirals that define a spiral passageway therethrough, the spirals extending further axially outwardly than the laminations, the spiral passageway being therein configured to circulate a cooling fluid therethrough.