US 12,266,998 B2
Stator cooling assembly for a linear motor
Ivan Garcia-Herreros, Saint-Sulpice (CH); Jean-Yves Grillon, Granges-Narboz (FR); and Jean Lefevre, La Cluse et Mijoux (FR)
Assigned to ETEL S.A., Motiers (CH)
Filed by ETEL S.A., Motiers (CH)
Filed on Jan. 23, 2023, as Appl. No. 18/157,859.
Claims priority of application No. 22156490 (EP), filed on Feb. 14, 2022.
Prior Publication US 2023/0261548 A1, Aug. 17, 2023
Int. Cl. H02K 9/20 (2006.01); H02K 9/22 (2006.01); H02K 41/00 (2006.01)
CPC H02K 9/225 (2021.01) [H02K 9/20 (2013.01); H02K 2213/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A stator cooling assembly for a linear motor, comprising:
a stator; and
a modular cooling arrangement mounted on the stator, the modular cooling arrangement comprising:
a U-shaped fluid cooling pipe having a first linear segment extending along a first longitudinal side of the stator and a second linear segment extending along a second longitudinal side of the stator, opposite the first longitudinal side,
an inlet port and an outlet port connected to a free end of the first and second linear segments, respectively, of the U-shaped fluid cooling pipe for circulating a cooling fluid along the first and second longitudinal sides of the stator,
a central cooling arrangement comprising primary cooling units mounted into respective recesses of the stator extending across the stator from the first to the second longitudinal side, and
connecting members connecting the central cooling arrangement to the U-shaped fluid cooling pipe,
wherein each of the primary cooling units comprises at least one heat pipe having a first portion extending along the respective recess of the stator, and a second portion extending along a portion of the U-shaped fluid cooling pipe, and
wherein the connecting members connect the second portion of the at least one heat pipe of each of the primary cooling units to corresponding portions of the U-shaped fluid cooling pipe.