Electric machine with internal cooling passageways
AssigneeSchaeffler Technologies AG & Co. KG
InventorsMatthew Payne, Markus Steinberger
Life of this patent
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Abstract
An electric machine includes a stator core having opposing first and second end faces, an outer surface between the end faces, and a plurality of fluid passageways defined within the stator core. Each fluid passageway includes an entrance hole defined in the outer surface and an inboard passage extending along a length of the core and in fluid communication with the entrance hole. Each fluid passageway further includes an outboard passage extending along a length of the core and having a first exit hole defined in the first end face and an interconnecting passage connecting the inboard passage in fluid communication with the outboard passage.
Claims14
An electric machine comprising:
- a stator core including opposing first and second end faces, an outer surface between the end faces, and a plurality of fluid passageways defined within the stator core, each fluid passageway including:
- an entrance hole defined in the outer surface,
- an inboard passage extending along a length of the core and in fluid communication with the entrance hole,
- an outboard passage extending along a length of the core and having a first exit hole defined in the first end face, and
- an interconnecting passage connecting the inboard passage in fluid communication with the outboard passage;
- a stator housing defining a first annular fluid chamber circumscribing the entrance holes and configured to supply fluid to the entrance holes;
- and
- a case defining a main supply passageway and a second annular fluid chamber in fluid communication with the main supply passageway and the first annular fluid chamber.
An electric machine comprising:
- a stator housing having an inner surface defining a recessed annular fluid chamber;
- a stator core received in the stator housing and having an outer surface disposed against the inner surface, the stator core defining at least one fluid passageway having an entry hole defined in the outer surface and opening into the annular fluid chamber and having a first passage defined in the stator core and extending substantially axially;
- and
- a case defining a main fluid supply passageway and a second annular fluid chamber recessed into an inner surface of the case and in fluid communication with the supply passageway, wherein the annular fluid chamber of the stator housing is in fluid communication with the second annular fluid chamber via a hole defined in the stator housing.
Dependencies are inferred from the claim text.