| 发明名称 | Electric motor for construction machinery, and cooling circuit for electric motor | ||
| 摘要 | A cooling circuit for an electric motor for a construction machine includes a circulation line that includes a shaft-side line disposed in a rotor shaft of the electric motor, a pump that supplies cooling fluid to the circulation line, a first filter disposed between the pump and the shaft-side line in the circulation line, a first bypass line that bypasses the first filter so as to connect an upstream side and a downstream side of the first filter, and a first relief valve disposed in the first bypass line. | ||
| 申请公布号 | US9000632(B2) | 申请公布日期 | 2015.04.07 |
| 申请号 | US201113635400 | 申请日期 | 2011.06.06 |
| 申请人 | Komatsu Ltd. | 发明人 | Matsuki Yasuhiko;Minagawa Masanori |
| 分类号 | H02K9/00;H02K1/32;H02K5/20;H02K9/19;H02K9/26 | 主分类号 | H02K9/00 |
| 代理机构 | Fish & Richardson P.C. | 代理人 | Fish & Richardson P.C. |
| 主权项 | 1. A cooling circuit for an electric motor for a construction machine, the cooling circuit comprising: a circulation line that includes a shaft-side line disposed in a rotor shaft of the electric motor; a pump that supplies cooling fluid to the circulation line; a first filter disposed between the pump and the shaft-side line in the circulation line; a first bypass line that bypasses the first filter so as to connect an upstream side and a downstream side of the first filter; and a first relief valve disposed in the first bypass line. | ||
| 地址 | Minato-ku, Tokyo JP | ||