US 12,341,409 B2
Electric rotary machine and drive arrangement
Jonas Kniel, Karlsruhe (DE); and Patrick Gramann, Renchen (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 18/007,829
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed May 6, 2021, PCT No. PCT/DE2021/100411
§ 371(c)(1), (2) Date Dec. 2, 2022,
PCT Pub. No. WO2021/244700, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 102020114604.3 (DE), filed on Jun. 2, 2020.
Prior Publication US 2023/0238859 A1, Jul. 27, 2023
Int. Cl. H02K 9/19 (2006.01)
CPC H02K 9/19 (2013.01) 17 Claims
OG exemplary drawing
 
1. An electric rotary machine, comprising:
a rotor that is rotatable about an axis of rotation;
a stator arranged statically with respect to the rotor;
a fluid supply device arranged in a statically fixed manner;
a distribution element which is fluidically connected to the fluid supply device and is rotatable relative to the fluid supply device;
the fluid supply device has a flow channel with an outlet for discharging a cooling fluid volume flow in an outlet direction; and an axis of rotation of the distribution element is arranged in relation to the outlet such that the outlet direction extends tangentially to a circumference of the distribution element so that the cooling fluid volume flow exiting the outlet is tangentially flowable against the distribution element and the distribution element is settable in rotation as a result of the incident flow, as a result of which the cooling fluid is distributable around the axis of rotation of the distribution element, with the cooling fluid being carried along by the distribution element;
wherein the flow channel is formed at least in sections by a longitudinal bore of a screw screwed into an element arranged in a statically fixed manner of the electric rotary machine, and the outlet is formed extending from the longitudinal bore in the screw.