| 摘要 |
The present invention relates to a motor cooling device for an air compressor which uses a portion of a compressed air, ejected from a compressor, as a cooling air and enables the cooling air to flow inside the motor, thereby cooling down a motor and a bearing. Also, according to the present invention, a rotation shaft is configured as a hollow shaft and the hollow shaft is used as an internal flow path, such that the cooling air is recirculated toward a front portion of the compressor through the internal flow path and stability against a surge is guaranteed. Furthermore, a recirculation path of air is formed inside, rather than outside, the motor, such that an overall configuration is simplified and a layout is improved. |
