| 摘要 |
<p>The present invention comprises a motor case having space formed inside; a hollow stator disposed in the space and having a coil; a rotor having a magnet which is rotated inside the stator; a water jacket disposed around the external circumference of the stator; and a fan disposed to face the internal circumference of the stator on the external circumference of the rotor, wherein the motor case includes an air intake port for which external air flows into the space and an exhaust port for the air in the space exhausts to the outside. The external circumference of the stator is cooled by a water cooled method by a water jacket, the internal circumference of the stator is cooled by an air-cooled method by the fan, and the entire of the stator is uniformly cooled, thereby improving the performance of the motor.</p> |
