US 12,155,280 B2
Slot cooling fins in electrical machines
Jagadeesh Kumar Tangudu, South Windsor, CT (US); Thomas M Yun, Glastonbury, CT (US); and Andrew S Babel, West Hartford, CT (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Dec. 16, 2022, as Appl. No. 18/083,337.
Application 18/083,337 is a division of application No. 16/922,808, filed on Jul. 7, 2020, granted, now 11,557,943.
Application 16/922,808 is a division of application No. 15/875,550, filed on Jan. 19, 2018, granted, now 10,742,098, issued on Aug. 11, 2020.
Prior Publication US 2023/0123354 A1, Apr. 20, 2023
Int. Cl. H02K 15/02 (2006.01); H02K 1/14 (2006.01); H02K 1/20 (2006.01); H02K 3/16 (2006.01); H02K 5/18 (2006.01); H02K 9/193 (2006.01); H02K 9/22 (2006.01)
CPC H02K 15/024 (2013.01) [H02K 1/20 (2013.01); H02K 3/16 (2013.01); H02K 5/18 (2013.01); H02K 9/193 (2013.01); H02K 9/223 (2021.01); H02K 9/227 (2021.01); H02K 1/146 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of manufacturing a stator for an electric machine, the method comprising:
manufacturing a planar member that includes a stator yoke comprising a first surface facing radially outward, a second surface facing radially inward, a plurality of teeth extending radially inward from second surface, a first tooth tip extending in a first direction from a proximal end of each tooth of the plurality of teeth into a first slot defined between a first tooth of the plurality of teeth and a second tooth of the plurality of teeth on a first side of the first tooth, a second tooth tip extending in a second direction opposite the first direction from the proximal end of each tooth of the plurality of teeth into a second slot defined between the first tooth of the plurality of teeth and a third tooth of the plurality of teeth on a second side of the first tooth opposite the first side, a first slot cooling fin disposed at a radial location on the first side of the tooth between the second surface of the stator yoke and the first tooth tip of the tooth, and a second slot cooling fin disposed at a radial location on the second side of the tooth between the second surface of the stator yoke and the second tooth tip of the tooth;
disposing a first coil into the first slot such that the first coil surrounds the first slot cooling fin; and
disposing a second coil into the second slot such that the second coil surrounds the second slot cooling fin.