US 12,323,039 B2
Air cooling of an internal combustion engine with an electrical motor or generator
Nabeel Ahmed Shirazee, Cardiff South Glamorgan (GB)
Assigned to EPROPELLED LIMITED, Cardiff South Glamorgan (GB)
Appl. No. 17/613,036
Filed by EPROPELLED LIMITED, Cardiff South Glamorgan (GB)
PCT Filed May 20, 2019, PCT No. PCT/GB2019/051385
§ 371(c)(1), (2) Date Nov. 19, 2021,
PCT Pub. No. WO2019/220149, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 1808132 (GB), filed on May 18, 2018.
Prior Publication US 2022/0224199 A1, Jul. 14, 2022
Int. Cl. H02K 9/06 (2006.01); H02K 1/16 (2006.01); H02K 1/2789 (2022.01); H02K 1/2791 (2022.01); H02K 5/20 (2006.01); H02K 9/22 (2006.01)
CPC H02K 9/06 (2013.01) [H02K 1/16 (2013.01); H02K 1/2789 (2022.01); H02K 1/2791 (2022.01); H02K 5/207 (2021.01); H02K 9/227 (2021.01)] 12 Claims
OG exemplary drawing
 
1. An electrical machine comprising a stator having a plurality of windings and a rotor having a plurality of permanent magnets arranged to rotate around the windings, wherein the magnets are mounted to an outer portion of a rotor body, the rotor body further having an inner hub portion and a plurality of circumferentially-spaced arms which extend radially from the hub portion to the outer portion of the body, at least one of the arms comprising a vane which causes an axial airflow as the rotor rotates, wherein the at least one vane is removable or replaceable, the stator comprising a plurality of radially-extending coils, each coil extending around a core of magnetisable material which extends radially from an annular yoke, an annular heatsink being disposed inside the yoke, the heatsink comprising fins which extend radially outwardly to contact and thermally connect with a radially inner face of the annular yoke in which the heatsink is disposed, the at least one vane being arranged to cause an airflow over the heatsink along passageways defined by the fins which extend between the heatsink and the yoke.