Rotary electric machine
US10615667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2017 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Apr 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/2766
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a rotary electric machine in which cooling efficiency can be improved. The rotary electric machine includes a first refrigerant passage through which refrigerant passes from the shaft to the rotor core, wherein the rotor core includes a second refrigerant passage through which the refrigerant having passed through the first refrigerant passage passes, wherein the insulator includes: a base portion; a radially inner protruding portion, which is formed on a radially inner side of the base portion, and a radially outer protruding portion, which is formed on a radially outer side of the base portion, wherein the radially inner protruding portion has a first through-hole penetrating therethrough in a radial direction, and wherein the refrigerant having passed through the second refrigerant passage passes through the first through-hole to travel to the stator coil end portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.