The blower directly relies on the motor to drive the rotor to drive the blades to rotate. When the blade rotates, air is sucked in from the air inlet, and the centrifugal air flow thus formed is blown out from the front nozzle of the punch. When air passes through, if the heating wire installed on the heating bracket in the air nozzle has been electrified and heated, hot air will be blown out; If the selector switch does not energize the heating wire, it will blow out cold air. This is the purpose of hair dryer to dry and finalize the design.

The selector switch on the handle of the hair dryer is generally divided into three gears, namely, off gear, cold gear and hot gear, and is marked with white, blue and red. The handle of some hair dryers is also equipped with a motor speed control switch, which is used to select the air volume and the temperature of hot air. On the back or side of various blower housings, there is a rotatable circular air conditioning cover. By rotating the hood to adjust the cross section of the air inlet, the conveying wind speed and the temperature of hot air can be adjusted.

According to the mode of use, there are hand-held and pedestal hair dryers. The base hair dryer can be placed on the table or hung on the wall, and you can blow your hair by yourself.

According to the air supply mode, there are centrifugal blowers and axial blowers. The centrifugal motor drives the blades to rotate, so that the air entering the fan obtains inertial centrifugal force and continuously discharges the air. Its disadvantages are that the exhausted wind does not completely flow through the motor, and the motor temperature is high; The advantage is low noise.