Baffle structure for cast aluminum rotor of high-voltage motor

Abstract

The invention belongs to the technical field of assembly of cast aluminum rotors for high-voltage motors, and relates to a baffle structure, in particular to a baffle structure for a cast aluminum rotor of a high-voltage motor. The baffle structure for the cast aluminum rotor of the high-voltage motor adopts the technical scheme that a baffle comprises a baffle body; a mounting hole is formed in a central area of the baffle body; the hole diameter of the mounting hole is the same as the inside diameter of a rotor sheet body; and the baffle body on the outer side of the mounting hole can block off air holes in the rotor sheet body. The baffle structure is simple and compact in structure, low in cost, simple to process and manufacture, convenient to operate, and wide in application scope; omission or reverse placement is not easy; and the working reliability of the motor can be improved.

Description

technical field [0001] The invention relates to a baffle structure, in particular to a baffle structure for a cast aluminum rotor of a high-voltage motor, and belongs to the technical field of assembling a cast aluminum rotor for a high-voltage motor. Background technique [0002] For the high-pressure cast aluminum rotor motor with a box-type IP23 structure, the cold air in the motor's air path system enters the motor through the louvers at the non-shaft extension end of the motor, and enters the stator diameter through the air gaps in the axial ventilation holes of the rotor and the radial ventilation channels of the rotor shaft. To the ventilation channel, it flows through the end of the winding, and finally the internal fan discharges the hot air inside the motor from the louvers at the shaft extension end. [0003] When the cold air flows through the cast aluminum rotor (the cast aluminum rotor is stacked by the rotor punch and the first rotor ventilation slot plate, an...

AI Technical Summary

Problems solved by technology

[0003] When the cold air flows through the cast aluminum rotor (the cast aluminum rotor is stacked by the rotor punch and the first rotor ventilation slot plate, and then a second rotor ventilation slot plate is placed at one end of the cast aluminum rotor, and the aluminum ingot is poured to finally form a cast aluminum rotor. Rotor), the air gap between the rotor axial ventilation hole and the rotor shaft radial ventilation channel enters the stator radial ventilation channel to achieve the purpose of cooling the stator core and the cast aluminum rotor, so it is usually placed at one end of the cast aluminum rotor A piece of the second rotor ventilation slot plate part is used to block the rotor axial ventilation hole, so as to let the cold air flow along the radial ventilation channel of the stator and rotor. If the second rotor ventilation slot plate is not used to block the rotor axial ventilation hole, the cooling air will flow along the The axial ventilation holes of the rotor flow from a straight line to the fan and finally discharge the motor, so the cooling effect is very poor, and the core temperature of the stator and rotor will be very high

However, during the pouring process, the workers in the workshop can easily forget the second rotor ventilation slot plate parts. Once forgotten, the cast aluminum rotor has been formed after pouring and cooling, and it is difficult to redo it, or it is easy to replace the cast aluminum rotor during the pressing process. The end with the second rotor ventilation slot plate is reversed, and the final result is that the air passage for the axial ventilation of the rotor is completely blocked, and it is easy to burn the motor

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