US 11,916,467 B2
Slip ring system with improved cooling
Herbert Binder, Neuburg (DE); Daniel Friedl, Fürstenzell (DE); Robert Gruber, Ruhstorf (DE); Oliver Memminger, Neuburg a. Inn (DE); Andrej Raskopf, Passau (DE); and Klaus Schifferer, Neuhaus am Inn (DE)
Assigned to Flender GmbH, Bocholt (DE)
Appl. No. 17/613,352
Filed by Flender Gmbh, Bocholt (DE)
PCT Filed Apr. 3, 2020, PCT No. PCT/EP2020/059546
§ 371(c)(1), (2) Date Nov. 22, 2021,
PCT Pub. No. WO2020/239301, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 19177085 (EP), filed on May 28, 2019.
Prior Publication US 2022/0224204 A1, Jul. 14, 2022
Int. Cl. H02K 9/28 (2006.01); H02K 5/14 (2006.01); H02K 7/18 (2006.01); H02K 9/26 (2006.01); F03D 80/60 (2016.01); H01R 39/08 (2006.01)
CPC H02K 9/28 (2013.01) [F03D 80/60 (2016.05); H01R 39/08 (2013.01); H02K 5/141 (2013.01); H02K 7/183 (2013.01); H02K 9/26 (2013.01); F05B 2220/706 (2013.01); F05B 2260/232 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A ventilation system of a slip ring system of an electrically excited dynamoelectric machine, the slip ring system defining an axis about which the slip ring system rotates comprising:
a carrier segment that includes a brush holder comprising a brush pocket for receiving a brush, and a surface-enlarging structure, and
means for cooling the brush in the brush holder or for cooling the brush holder with a cooling air flow guided in or on the slip ring system, which is closed or open, in a radial and in a circumferential direction past the brush holder,
wherein the radial and the circumferential directions are orthogonal to the axis.