Micro-Channel Heat Exchanger for Stator of Electrical Machine with Supply Header
First Claim
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 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.
2 Assignments
0 Petitions
Accused Products
Abstract
An electric machine has a stator that comprises a plurality of laminations with teeth and cooling apertures about a central opening. When the laminations are stacked to form the stator core, the teeth of adjacent laminations cooperate to form slots disposed circumferentially about the central opening that are configured to receive a plurality of stator windings, and the cooling apertures angularly spaced about the central opening cooperate to form cooling manifolds that extend along a length of the stator core. A portion of the laminations has their cooling apertures offset from other laminations in the stack in a manner to create a plurality of flow paths transverse to the manifolds. The transverse flow paths extend angularly between laminations and adjacent manifolds. A header assembly directs flow into and out of the stator core.
-
Citations
36 Claims
-
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 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. An electric machine, comprising:
-
a rotor; and a stator core comprising a plurality of laminations, wherein the plurality of laminations are aligned to form a central aperture configured to receive the rotor and are cooperative with each other to form (i) a plurality of closed passageways for routing fluid axially along a length of the stator; and
(ii) a plurality of channels extending angularly between the closed passageways and the laminations; and
wherein the laminations have an outer periphery and the closed passageways and angular channels are radially inward of the outer periphery;a supply header communicating with a first portion of the cooling apertures, the supply header being adapted to direct cooling fluid from a reservoir 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 and direct the cooling fluid to the reservoir. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. An electric machine, comprising:
-
a rotor; and a stator core comprising a plurality of stator laminations, wherein the plurality of stator laminations cooperate to form a central opening configured to receive the rotor, a plurality of slots disposed circumferentially about the central opening and configured to receive a plurality of stator windings, and intermediate apertures disposed between the plurality of slots and an outer periphery of the stator core angularly about the center opening, the intermediate apertures being configured to allow a fluid to flow axially through the stator core, angularly adjacent intermediate apertures being in communication with each other through channels extending angularly about the central opening; a supply header with ports communicating with a first portion of the cooling apertures, the supply header being adapted to direct cooling fluid from a reservoir into the first portion of the cooling apertures; and a return header with ports 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 and direct the cooling fluid to the reservoir; wherein the return header and supply header are arranged on an axial end of the stator core and separated by a wall. - View Dependent Claims (29, 30)
-
-
31. An electric machine, comprising:
-
first and second end brackets defining end cavities; a rotor; a stator core having axial opposite ends with the first end cavity arranged on one axial end of the stator and the second cavity arranged on the opposite axial end, the stator 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 laminations and adjacent manifolds, the cooling apertures being radially inward of the outer periphery of the stator laminations; and 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, the first portion of cooling apertures communicating with a second portion of the cooling apertures, the second portion of the cooling apertures communicating with at least one of the end cavities. - View Dependent Claims (32, 33, 34, 35, 36)
-
Specification