How Hair Dryer Works

The motor directly drives the rotor to drive the fan blades to rotate. When the fan blades rotate, air is sucked in from the air inlet, and the resulting centrifugal airflow is blown out from the front nozzle of the air dryer. When the air passes through, if the heating wire on the heating bracket installed in the air nozzle is energized and heated, hot air will be blown out; if the selector switch does not enable the heating wire to be energized and heated, cold air will be blown out. This is where the hair dryer is used for drying and shaping purposes.
The selector switch on the hair dryer handle is generally divided into three levels, namely off, cold air, and hot air, and is accompanied by white, blue, and red color indicators. Some hair dryers are also equipped with a motor speed control switch on the handle, which can be used to select the air volume and hot air temperature. All types of hair dryers are equipped with a rotatable circular air-adjusting hood on the back or side of the casing. By rotating the hood to adjust the cross-sectional size of the air inlet, the delivered wind speed and the temperature of the hot air can be adjusted.