Motor

Abstract

The invention discloses a motor, relates to the field of motors, and provides a solution for the problem that a motor cools slowly, is noisy, and has a fan which is prone to dust accumulation in the prior art. The motor comprises a motor housing, and a stator and a rotor which are arranged in the motor housing. The end face of the outer edge of the stator and stator teeth are provided with ventilation holes which run through the stator. The motor housing is fixed by a rear end cover. A cavity is arranged between the rear end cover and the rear end face of the stator. A cooling fan is arranged in the cavity, the blades of the cooling fan are arc-shaped, and one end of each blade along the length direction is fixed to a base of the cooling fan. The front and rear ends of a rotating shaft of the motor are respectively provided with a damping bearing. The front end face of the motor housing is provided with an air outlet hole, and the rear end cover is provided with an air inlet hole. As the stator is provided with the run-through ventilation holes, heat generated during high-speed rotation of the motor can be rapidly output to the outside. The cooling fan at the rear end of the motor makes low noise when running at high speed, and the cooling fan is not prone to dust accumulation as the centrifugal force at the blades is large.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor with good heat dissipation effect, low noise, and a fan that is not easy to accumulate dust. Background technique [0002] The current motors, especially the motors with wound rotors, because the heat generated by the windings on the rotor cannot be dissipated in time, it will gradually accumulate on the wires or magnetic materials, which will eventually lead to local overheating of the rotor, thus affecting the performance of the motor. service life. Although arranging cooling fins on the motor housing, or even arranging fans at the ends, can slightly improve the heat dissipation of the rotor, it is difficult to fundamentally solve the problem of local overheating of the rotor. To solve this problem, air-cooled and water-cooled motors have also appeared. However, water-cooled heat dissipation methods are generally used for large-scale motors. Air-cooled motors generally ...

AI Technical Summary

Problems solved by technology

[0002] The current motors, especially the motors with wound rotors, because the heat generated by the windings on the rotor cannot be dissipated in time, it will gradually accumulate on the wires or magnetic materials, which will eventually lead to local overheating of the rotor, thus affecting the performance of the motor. service life

Although installing heat sinks on the motor housing and even fans at the end can slightly improve the heat dissipation of the rotor, it is difficult to fundamentally solve the problem of local overheating of the rotor

To solve this problem, air-cooled and water-cooled motors have also appeared. However, water-cooled heat dissipation methods are generally used for large-scale motors. Air-cooled motors generally use cooling fans to complete heat dissipation. Generally, the fans of air-cooled motors are running rapidly. It is easy to produce loud whistling sound, because the blade structure is straight, it is easy to accumulate on the fan, which will increase the load of the motor shaft and reduce the flexibility of the shaft

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