The high-end hair dryer DC brushless motor motor is 95,000 revolutions per minute. This is a DC brushless three-phase motor. Its blades are of a turbine structure. The permanent magnet inside it is actually set on the blades of the turbine to match the high speed. The dynamic balance is very small and delicate,
If the motor is equipped with a smaller driver and a battery, it will be no problem to drive the model airplane, and it can take off! Put it on the hair dryer, the air volume can be imagined, it is absolutely top, because the air volume of the hair dryer depends on its motor and drive
And it does not have the output of the Hall sensor of the conventional brushless motor, so this is a sensorless driving method, which is the most advanced driving method in the motor drive, which is too beautiful.
This picture is indeed amazing, but the smoking hair dryer next to it reminds me that this is death!
Usually when we use a hair dryer, most of the wind is blown out from the hair dryer, in fact, a small part of the wind is blown in from this small hole to cool the circuit.
The general hundred-yuan hair dryer uses a brushed motor, which not only has no advantage in speed, but also wears out quickly, and it will fail after use.
The drive, complexity and output power of brushless DC motors are incomparable to ordinary motors. It can be understood that the speed control of DC motors such as high-speed hair dryers is similar to variable frequency drives, and the technology is much more advanced.
