Motor and shell thereof

Abstract

The invention discloses a motor and a shell thereof. The shell comprises a shell body, wherein the shell body is provided with a plurality of cooling air channels, the shell body is provided with a radial air inlet, and the radial air inlet is communicated with all the cooling air channels, so that cold air flows into the cooling air channels from the radial air inlet. an air inlet guide plate isarranged at the radial air inlet and guides cold air to evenly flow, and conditions are provided for the cold air to evenly flow into the cooling air channels. Furthermore, a plurality of air channelflow guide plates are fixedly arranged on the periphery of the shell body, the air channel flow guide plates divide the cold air entering from the radial air inlet, the cold air evenly flows into allthe cooling air channels, uneven heat dissipation in the cooling air channels is avoided, stable heat dissipation of the stator is achieved, and stable operation of the motor is guaranteed.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor and its casing. Background technique [0002] In order to prevent dust, moisture, acid and alkali and other foreign matter from damaging the permanent magnet of the motor, taking the permanent magnet motor as an example, the motor usually adopts a closed casing, which makes the ventilation and cooling performance of the motor one of the key factors affecting the motor capacity. Good ventilation and cooling The performance can keep the motor at a low temperature rise level, which is beneficial to reduce thermal deformation and vibration wear, and ensure a long service life of the motor. The side wall of the base of the existing motor is provided with several cooling air ducts, and the two ends of the cooling air ducts are connected with the outside world, so that the cold air in the cooling air ducts can exchange heat with the hot air on the surface of the base, and the hea...

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Problems solved by technology

[0003] However, under the hindrance of the heat dissipation fins, the cold air in the cooling air duct flows unevenly along the axial direction of the machine base, resulting in uneven heat dissipation of the machine base, which in turn affects the uniform heat dissipation of the stator in the machine base, making the stator very easy to be damaged due to local temperature. The problem of irreversible demagnetization will occur if the temperature rises too high, which will affect the stable operation of the motor

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