| 摘要 |
PURPOSE: A fan and a shroud assembly are provided to improve the durability of a BLDC motor by changing the shape of a rotor or a stator forming the BLDC motor in order to prevent foreign materials from being infiltrated into the BLDC motor. CONSTITUTION: A fan and a shroud assembly comprise a hub and fan, and a BLDC motor. The fan is made of a plurality of blades extended from the hub to the outside. The shroud surrounds the fan to control the air blow due to the rotation of the fan. The BLDC motor(10) is made of the stator, and the rotor. The stator(20) is fixed on the shroud and a coil is installed inside the stator. The rotator is arranged at the top of the stator and a magnet(31) is formed in the inner circumference of the rotor and a hub is coupled on the outer circumference of the rotor. A foreign material prevention unit(21) is formed between the stator and the rotor.
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