The fans we use every day use the motor to drive the fan blades to rotate to affect the air flow. Generally, for fan motors, brushless motors are mostly used, because the fans need to run for a long time, and only brushless motors can meet this requirement. This requirement is not met by brushed DC motors, so brushless motors are most used in fan motors.
However, for some small fans, micro brushed DC motors can also meet the requirements of use well. For example, hand-held small fan motors and USB fan motors can use brushed micro DC motors. The speed regulation of micro brushed DC motors is simple, unlike brushless motors, which are more complicated. In addition, the cost of brushed micro DC motors is low, and the price of hand-held small fans is not high, so brushed DC motors are used in hand-held small fans, office USB There are many applications on the fan.
Although it is better to use a brushless motor, due to cost considerations, few people use a brushless motor on a small fan. Because of the high cost, the price of the product will also increase, and like a small USB fan product, The difference between using brushed and brushless motors is not too big. Basically, it is a service life factor. The wear life of brushed motors and carbon brushes is lower than that of brushless motors, but for micro and small products, these can be used. can be ignored.
Of course, only small bladeless fans are suitable. If it is a relatively large fan, choose a fan motor or consider a brushless motor. Therefore, when we choose a small fan motor, we do not necessarily only consider brushless motors. Sometimes brushed DC motors can also meet various needs well.
