| 摘要 |
PURPOSE:To effectively cool the electromagnetic driving section of a motor by a construction wherein a shielding member is formed in the electromagnetic driving section of the motor body through a space and a cooling fan is rotatably arranged in the space. CONSTITUTION:A shielding member 4 is formed in an elecrromagnetic driving section 3 of a motor body 1 through a space. A sirocco type cooling fan 6 is provided within the space 5 straddling over the outer periphery of the electromagnetic driving section 3. The sirocco type cooling fan 6 is rotated to cool the electromagnetic driving section 3. Air heated through this heat exchanger flows into a hollow chamber through an exchaust pipe member 10. Thus, the electromagnetic driving section 3 is effectively cooled without cooling the interior of the hollow chamber or lowering its temperature excessively. |
