Exterior rotor permanent magnet brushless direct current (DC) fan motor for air-conditioning system for ship

Abstract

The invention relates to an exterior rotor permanent magnet brushless direct current (DC) fan motor for an air-conditioning system for a ship. The fan motor comprises a case and a shaft fixed in the case, wherein non-homocentric circular arc-shaped magnetic steels are fixed on the inner walls of the case by magnetic steel fixing rings; stator supports are installed on the shaft by bearings; stator cores are fixed on the stator supports and are formed through superimposition of a plurality of stator plates; the stator cores are provided with stator teeth and stator slots which are uniformly alternate and have different widths; insulating stator frames are installed on the stator cores; stator windings are embedded in the insulating stator frames; one stator winding is connected with a lead; and epoxy materials are packaged on the stator windings. The fan motor has a simple structure, good startup performance, small torque ripple, low noise, high efficiency, high power density and long life, is convenient to install and reliable to operate, can be remotely controlled by a computer and is especially suitable for the air-conditioning system for the ship.

Description

technical field [0001] The invention relates to an outer rotor permanent magnet DC brushless blower motor for a marine air-conditioning system, belonging to the technical field of motors. Background technique [0002] Ships sail in various sea areas with complex meteorological conditions and changeable climate. In order to make the crew and passengers have a comfortable living and working environment, air conditioners can be used to create a suitable artificial climate in the cabin and improve the environment. Therefore, most modern ships are equipped with air-conditioning units. [0003] At present, AC induction motors are used in marine air-conditioning fan motors for air-conditioning and ventilation systems. AC induction motor, its working principle is: the stator generates a rotating magnetic field, and the rotor induces a current to generate an induced magnetic field under the action of the stator rotating magnetic field, and the rotor rotates through the interaction b...

AI Technical Summary

Problems solved by technology

In practical application, since the magnetic steel is pasted on the casing and is not fixed with a magnetic steel fixing ring, the magnetic steel is easy to fall off after a long time of operation, the operation is unreliable, and the life is short; the stator teeth are of equal width, and there are no grooves on the stator pole shoes. Large torque fluctuations and unstable starting; the magnet steel is tile-shaped, with a uniform air gap, large torque fluctuations and high noise; the stator bracket structure is complicated and the cost is high

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