发明名称 |
ROTOR OF ROTARY ELECTRIC MACHINE |
摘要 |
A rotor of a rotary electric machine, which is supported by a rotating shaft, includes a rotor core, and a permanent magnet embedded in the rotor core. At least one in-core cooling medium passage that leads a cooling medium supplied from an in-shaft cooling medium passage formed inside the rotating shaft to an outer peripheral end of the rotor core, and discharges the supplied cooling medium into a gap between the rotor core and a stator, is formed in the rotor core. The at least one in-core cooling medium passage includes a center cooling medium passage, a pair of inner peripheral side cooling medium passages, and an outer peripheral side cooling medium passage that is communicated with the gap. A radially outside end portion of the center cooling medium passage has a slope that extends toward a radially outer side closer to a center in the axial direction. |
申请公布号 |
US2016372983(A1) |
申请公布日期 |
2016.12.22 |
申请号 |
US201615180538 |
申请日期 |
2016.06.13 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
OKOCHI Toshinori |
分类号 |
H02K1/32;H02K9/19;H02K1/27 |
主分类号 |
H02K1/32 |
代理机构 |
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代理人 |
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主权项 |
1. A rotor of a rotary electric machine, which is supported by a rotating shaft, comprising:
a rotor core; and a permanent magnet embedded in the rotor core, wherein at least one in-core cooling medium passage that leads a cooling medium supplied from an in-shaft cooling medium passage formed inside the rotating shaft to an outer peripheral end of the rotor core, and discharges the supplied cooling medium into a gap between the rotor core and a stator, is formed in the rotor core; the at least one in-core cooling medium passage includes a center cooling medium passage that extends in an axial direction in a position farther toward an inner peripheral side than the permanent magnet, a pair of inner peripheral side cooling medium passages that are provided near both ends in the axial direction of the rotor core and that communicate the in-shaft cooling medium passage with the center cooling medium passage, and an outer peripheral side cooling medium passage that extends radially outward from a center in the axial direction of the center cooling medium passage and is communicated with the gap; and a radially outside end portion of the center cooling medium passage has a slope that extends toward a radially outer side closer to the center in the axial direction. |
地址 |
Toyota-shi JP |