| 摘要 |
<p>/A cooling unit for a normal and reversely rotatable motor, which includes a plurality of blade-type cooling fins (17) attached to the projecting portion (13b) of a rotor shaft (13) projecting in to a cooling chamber (5) formed on the exterior of a motor case (10), a blower (25) for exhausting a cooling wind mounted on the exterior of the cooling chamber (5) in the direction of the motor shaft, and flow-arranging fixed wings (29) with a plurality of guide wings (29a) which are put radially in the exhausting space (28) between blade-type cooling fins (17) and the blower. In the cooling unit, in either case wherein the motor rotates normally or reversely, a spiral flow of the exhausted cooling wind passing through the blade-type cooling fins (17) is arranged to become a linear flow along the direction of the motor shaft through the flow-arranging fixed wings (29) and then exhausted out through the blower (25).</p> |
