US 10,892,666 B2
Double-casing frame of an electric machine
Thierry Pera, Belfort (FR); Philippe Ciciliani, Valentigney (FR); Yohan Kerever, Belfort (FR); and Hamza Lofti, Beaucourt (FR)
Assigned to MOTEURS LEROY-SOMER, Angouleme (FR)
Appl. No. 16/307,413
Filed by MOTEURS LEROY-SOMER, Angouleme (FR)
PCT Filed Jun. 6, 2017, PCT No. PCT/EP2017/063678
§ 371(c)(1), (2) Date Dec. 5, 2018,
PCT Pub. No. WO2017/211800, PCT Pub. Date Dec. 14, 2017.
Claims priority of application No. 16 55170 (FR), filed on Jun. 6, 2016.
Prior Publication US 2019/0305642 A1, Oct. 3, 2019
Int. Cl. H02K 9/19 (2006.01); H02K 5/20 (2006.01); H02K 9/16 (2006.01)
CPC H02K 9/19 (2013.01) [H02K 5/20 (2013.01); H02K 9/16 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A double-casing frame of an electric machine which is cooled by a fluid circulating inside the double casing, comprising:
an inner casing;
an end flange mounted on the inner casing at a rear; and
an outer casing which fits over a front of the inner casing and is separable from the inner casing without removing the end flange by sliding the outer casing to the rear along the inner casing, the outer casing and the inner casing defining between them a fluid circulation space, the outer casing having a rear end wall oriented perpendicularly to an axis of rotation of the electric machine and at least partially covering the inner casing, the outer casing forming with the end flange a radial clearance e.