End shield and rotor for a rotary electric machine
AssigneeNidec Psa Emotors
InventorsJean Baptiste Roux, Juan Wang, Ioan Deac, Diana Fantuz
Life of this patent
Estimating the term…
Abstract
The present invention relates to an end shield (10) for a rotary electric machine, including one or more feed channels (12) for feeding a coolant supplied from a channel formed in a rotor lamination stack (8) or in a shaft of the rotor or between the rotor lamination stack and the shaft, wherein at least one feed channel (12) has a spray portion (18) for spraying the coolant, said spray portion (18) being placed in the last two thirds of the feed channel (12), when considered in the direction in which the coolant circulates.
Claims19
An end shield for a rotary electric machine, including one or more feed channels for feeding a coolant supplied from a channel formed in a rotor lamination stack or in a shaft of a rotor or between the rotor lamination stack and the shaft, wherein at least one feed channel of the one or more feed channels has a spraying portion for spraying the coolant, said spraying portion being disposed in the last two thirds of the feed channel, when considered in the direction in which the coolant circulates,
- the end shield including a flared terminal portion located after the spraying portion, when moving in the direction of circulation of the coolant,
- the flared terminal portion including a bottom inclined at an angle α relative to a plane perpendicular to the rotational axis of the rotor,
- edges of the feed channel at the spraying portion each having a first trough, a second trough, and two bumps.
An end shield for a rotary electric machine, including one or more feed channels for feeding a coolant supplied from a channel formed in a rotor lamination stack or in a shaft of a rotor or between the rotor lamination stack and the shaft, wherein at least one feed channel of the one or more feed channels has a spraying portion for spraying the coolant, said spraying portion being disposed in the last two thirds of the feed channel, when considered in the direction in which the coolant circulates,
- the end shield including a flared terminal portion, when moving in the direction of circulation of the coolant,
- the flared terminal portion including a bottom inclined at an angle α relative to a plane perpendicular to the rotational axis of the rotor,
- at least one feed channel of the one or more feed channels including a cross-sectional constriction, the cross-section of the at least one feed channel decreasing and then increasing in a radial direction relative to the rotational axis of the machine, as seen when moving in the direction of circulation of the coolant.
Dependencies are inferred from the claim text.