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US 12,597,830 B2Granted
E-machine with a cooling system including sprayer arrangement
AssigneeGarrett Transportation I Inc.
InventorKyle Bauman
Life of this patent
Estimating the term…
Abstract
An e-machine includes a housing and a rotating group supported for rotation about an axis of rotation within the housing. The e-machine includes a stator with a plurality of end windings. The e-machine further includes a plurality of nozzles that is removably supported by the housing and spaced apart in a circumferential direction about the axis of rotation. The plurality of nozzles is directed generally radially toward the axis of rotation and toward the plurality of end windings for spraying a cooling fluid on respective ones of the plurality of end windings.
Claims20
An e-machine comprising:
- a housing;
- a rotating group supported for rotation about an axis of rotation within the housing;
- a stator disposed within the housing that is operably coupled to the rotating group, the stator including a plurality of end windings collectively defining an end winding outer diameter boundary;
- a plurality of nozzles removably supported by the housing and received within respective nozzle cavities, the nozzles arranged spaced apart in a circumferential direction about the axis of rotation, each nozzle further comprising a nozzle head having a wedge-shaped or triangular groove with first and second surfaces disposed at acute angles to each other for generating a fan-shaped spray profile of cooling fluid;
- at least one coolant outlet arranged lower, with respect to gravity, than the plurality of nozzles such that cooling fluid is gravity-assisted from the nozzles to the outlet;
- and
- wherein a plurality of fan-shaped spray profiles are directed generally radially inward with respect to the axis of rotation and collectively span a majority of, or the entirety of, the end winding outer diameter boundary,
- wherein edge portions of at least some fan-shaped spray profiles overlap with adjacent spray profiles to provide continuous coverage about the circumference of the end winding outer diameter boundary,
- and wherein the plurality of nozzles are removably supported such that each is received within a dedicated cavity of the housing.
6 more elements
An electric motor comprising:
- a housing;
- a rotating group supported for rotation about an axis of rotation within the housing;
- a stator disposed within the housing that is operably coupled to the rotating group, the stator including a plurality of end windings, the plurality of end windings collectively defining an imaginary end winding outer boundary that extends continuously about the axis of rotation;
- and
- a plurality of nozzles removably supported by the housing within respective nozzle cavities, the nozzles and spaced apart in a circumferential direction about the axis of rotation, each nozzle comprising a nozzle groove with first and second surfaces disposed at acute angles to one another for generating a fan-shaped spray profile of cooling fluid;
- and
- at least one coolant outlet positioned lower, with respect to gravity, than the plurality of nozzles such that cooling fluid flows from the nozzles to the outlet under gravity assistance;
- and
- wherein the plurality of fan-shaped spray profiles are directed generally radially inward with respect the axis of rotation and collectively spun a majority of, or the entirety of, the imaginary end winding outer boundary;
- and
- wherein edge portions of at least some fan-s ed spray profiles overlap with adjacent spray profiles to provide continuous coverage about the circumference of the imaginary end winding outer boundary.
8 more elements
A method of manufacturing an e-machine comprising:
- providing a housing;
- supporting a rotating group for rotation about an axis of rotation within the housing;
- inserting a stator within the housing, the stator including a plurality of end windings collectively defining an imaginary end winding outer boundary that extends continuously bout the axis of rotation;
- and
- removably supporting a plurality of nozzles in the housing so that each nozzle is received within a dedicated nozzle cavity and the nozzles are spaced apart in a circumferential direction about the axis of rotation;
- providing a plurality of nozzles, each having a nozzle head with a groove comprising first and second surfaces disposed at acute angles, the groove being wedge-shaped or triangular in cross-section, configured to generate a fan-shaped pray profile,
- arranging, the plurality of nozzles such that fan-shaped spray profiles are directed generally radially inward and collectively span a majority of or an entirety of an imaginary end winding outer boundary, with edge portions of same fan-shaped spray profiles with edge portions of said fan-shaped spray profiles overlapping with those of adjacent nozzles to provide continuous coverage;
- and
- arranging at least one coolant outlet lower than the nozzles so that a cooling fluid flows from the nozzles to the outlet under gravity.
6 more elements
Dependencies are inferred from the claim text.