US 12,438,408 B2
Induction motor
Tijo Thomas, Trivandrum (IN); and Vitthal Shreepad Deexit, Bangalore (IN)
Assigned to Entuple E-Mobility Pvt. Ltd., (IN)
Appl. No. 18/259,285
Filed by Entuple E-Mobility Pvt Ltd, Bangalore (IN)
PCT Filed Dec. 24, 2021, PCT No. PCT/IB2021/062295
§ 371(c)(1), (2) Date Jun. 26, 2023,
PCT Pub. No. WO2022/137209, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 202041056383 (IN), filed on Dec. 24, 2020.
Prior Publication US 2024/0313610 A1, Sep. 19, 2024
Int. Cl. H02K 1/18 (2006.01); H02K 1/26 (2006.01); H02K 5/20 (2006.01); H02K 17/20 (2006.01)
CPC H02K 1/185 (2013.01) [H02K 1/265 (2013.01); H02K 5/207 (2021.01); H02K 17/20 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An induction motor, comprising:
a stator body assembly, wherein the stator body assembly is characterized by:
a hollow cylindrical stator stack fabricated with a plurality of rectangular shaped open slots on inner surface periphery and a plurality of cleating notches on outer surface periphery,
wherein the plurality of rectangular shaped open slots is equispaced and distributed around the hollow cylindrical stator stack,
wherein two adjacent sides of each of the plurality of rectangular shaped open slots is being fabricated with corresponding two v-shaped depressions of pre-defined dimensions,
wherein each of the plurality of cleating notches are equispaced and distributed around the hollow cylindrical stator stack,
wherein each of plurality of cleating notches is fabricated with a c-shaped depression of pre-defined dimensions on the outer surface; and
a set of intertwined stator rods configured as stator windings and housed within the plurality of rectangular shaped open slots, wherein each rod of the set of intertwined stator rods is being aligned along the two v-shaped depressions of each of plurality of rectangular shaped open slots; and
a rotor body assembly housed within the stator body assembly and configured to mount over a shaft of the induction motor, wherein the rotor body assembly is characterized by:
a hollow cylindrical rotor stack fabricated with a plurality of predesigned rotor slots on outer surface periphery, a plurality of vent holes and a rectangular notch of predefined dimension on inner surface periphery,
wherein each of the plurality of predesigned rotor slots are equispaced and distributed around the hollow cylindrical rotor stack,
wherein the rectangular notch is fabricated with a c-shaped depression of predefined dimensions and configured to align with the shaft of the induction motor corresponding to the rotor body assembly,
wherein each of the plurality of vent holes of pre-defined diameter are equispaced and distributed around the hollow cylindrical rotor stack and configured to provide air ventilation pathways for cooling of rotor body assembly; and
a set of rotor bars configured as rotor windings and housed within the plurality of predesigned rotor slots; and
the shaft of pre-defined diameter and fabricated with a rectangular depression for proper alignment with the notch on inner surface periphery of the rotor body assembly,
wherein the shaft is characterized by one or more equispaced steps on both axial ends for aligning mounted induction motor components,
wherein diameter of each of the one or more equispaced steps increases with decrease in distance from both axial end of the induction motor.