An air-cooled structure of an outer rotor permanent magnet motor

Abstract

The invention discloses an air-cooled structure of an outer rotor permanent magnet motor, which comprises a stator core, an air inlet side half shaft and an outlet side bearing bracket, and the wind inlet side half shaft and the outlet side bearing bracket are connected to both ends of the stator iron core , and the three are connected to form a hollow passage for ventilation. A cooling fan is installed at the air inlet end of the half shaft on the air inlet side. There is an inner retaining ring of the air duct, which is connected to the semi-shaft on the outgoing line side. There are multiple air duct baffles on the inner retaining ring of the air duct. One side of the air inlet of the side half shaft is connected on the support seat of the air inlet side. The invention has compact layout, convenient and fast installation, heat exchange between the cooling air and the stator core directly, the design of the air duct baffle increases the heat dissipation area, the inner retaining ring of the air duct increases the flow rate of the cooling air, improves the heat dissipation capacity of the motor, and Increased air cooling power rating.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an air-cooled structure of an outer rotor permanent magnet motor. Background technique [0002] In the belt conveyor drive system, the traditional belt conveyor drive generally adopts the drive mode of asynchronous motor + hydraulic coupling + reducer + drive roller. The drive chain of the entire drive system is lengthy, which virtually increases useless mechanical friction. It also increases the overall loss of the driving device, and the damage of any one of the components will directly lead to the shutdown of the entire driving device. This traditional drive method has problems such as low transmission efficiency, heavy operation and maintenance workload, and large space required for equipment layout. [0003] In view of the many shortcomings and problems of the traditional electric drum, the outer rotor permanent magnet motor acts as the drum, which simplifies the transmissio...

AI Technical Summary

Problems solved by technology

However, the stator of the outer rotor permanent magnet motor is inside the rotor, and its heat dissipation capability is poor. In order to solve this problem, the outer rotor permanent magnet motor is generally air-cooled or water-cooled. However, for some sites, the use of water cooling not only increases the cost, but also brings Due to disadvantages such as changing the coolant and taking up extra space, air cooling is more convenient, but compared with water cooling, air cooling has poor heat dissipation capacity, which will increase the temperature rise of the motor, and the power level of the air-cooled outer rotor permanent magnet motor is allowed limited

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