Rotating electric machine

Patent metadata

Field	Value
Publication number	US-11323004-B2
Application number	US-202016849190-A
Country	US
Kind code	B2
Filing date	Apr 15, 2020
Priority date	May 13, 2019
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A rotating electric machine includes a non-rotating member, a stator fixed to the non-rotating member, a field coil fixed to the non-rotating member, disposed on an inner diameter side of the stator, and having an iron core and a winding wound around the iron core, and a rotor rotatably disposed between the stator and the iron core. A flow path through which a heat exchange medium is supplied and discharged is formed in the iron core along an axial direction thereof.

First claim

The invention claimed is:

1. A rotating electric machine, comprising:
a non-rotating member;
a stator fixed to the non-rotating member;
a field coil fixed to the non-rotating member, disposed on an inner diameter side of the stator, and having an iron core and a winding wound around the iron core; and
a rotor rotatably disposed between the stator and the iron core, wherein
a flow path through which a heat exchange medium is supplied and discharged is formed in the iron core along an axial direction thereof.

2. The rotating electric machine according to claim 1 , wherein
the flow path of the iron core includes a flow hole formed from a first end of the iron core in the axial direction toward a second end of the iron core in the axial direction, and a pipe inserted into the flow hole, and
a first flow path is configured in the pipe, and a second flow path communicating with the first flow path is configured between the flow hole and the pipe.

3. The rotating electric machine according to claim 1 , wherein
the flow path of the iron core is configured by a plurality of flow holes formed from a first end of the iron core in the axial direction toward a second end of the iron core in the axial direction, and a communication hole communicating the plurality of flow holes on a second end side of the iron core.

4. The rotating electric machine according to claim 3 , wherein
the flow hole is formed on an outer diameter side of the iron core excluding a shaft center thereof.

Assignees

• Exedy Corp

Inventors

• Katsura Hitoshi
• Kitamura Taichi
• Kitada Kenji

Classifications

• H02K3/12 Primary

  arranged in slots · CPC title

• H02K5/203

  specially adapted for liquids, e.g. cooling jackets · CPC title

• H02K19/103

  Motors having windings on the stator and a variable reluctance soft-iron rotor without windings · CPC title

• H02K1/20

  with channels or ducts for flow of cooling medium · CPC title

• H02K1/243 Primary

  of the claw-pole type · CPC title