| 主权项 |
1. An electric machine, comprising:
first and second end cavities; a rotor; a stator core comprising a plurality of stator laminations, the plurality of stator laminations having an outer periphery, wherein the plurality of stator laminations cooperate to form a central opening configured to receive the rotor, each of the laminations having teeth about the central opening such that when the laminations are stacked side-by-side to form the stator core, the plurality of teeth of adjacent laminations cooperating to form slots disposed circumferentially about the central opening that are configured to receive a plurality of stator windings, each of the laminations having a plurality of cooling apertures angularly spaced about the central opening, the cooling apertures of adjacent laminations cooperating to form cooling manifolds that extend along a length of the stator core, a portion of the laminations having their cooling apertures offset from other laminations in the stack in a manner to create a plurality of flow paths transverse to the manifolds and angularly between adjacent laminations and adjacent manifolds, the cooling apertures being radially inward of the outer periphery of the stator laminations; a supply header communicating with a first portion of the cooling apertures, the supply header being adapted to direct cooling fluid from a supply into the first portion of the cooling apertures; and a return header communicating with a second portion of the cooling apertures, the return header being adapted to receive cooling fluid from the second portion of the cooling apertures. |
