Square chest motor of no radial air channel ventilating and cooling structure

The utility model discloses a square chest motor of no radial air channel ventilating and cooling structure. Be provided with axial wind path passageway on motor stator core's surface, the heat that produces in can the direct cooling motor by the loss of stator core yoke portion. Be provided with axial wind path passageway in the middle of motor stator core and rotor core, by the heat of stator core with the rotor core central part production in can the direct cooling motor. Be provided with axial wind path passageway on motor rotor core's internal surface, the heat that produces in can the direct cooling motor by the loss of rotor core yoke portion. Be provided with unilateral centrifugal fan at the motor shaft end, under unilateral centrifugal fan's effect, can carry out ventilating and cooling to three group's axial wind path passageways. The utility model discloses an effectual square chest motor wind path cooling capacity that has improved to no radial air channel messenger motor is compacter, the cost is lower.