Principle of hair dryer:

Electric hair dryers rely directly on an electric motor to drive a rotor that spins a blade (Note: The current market is divided 

into ordinary motors and three-phase brushless motors).

As the blades rotate, air is drawn in through the air inlet and the resulting centrifugal airflow is blown out through the front 

nozzle of the cylinder. As the air passes through, hot air is blown out if the heating wire on the heating bracket mounted in-

side the cylinder has been energized to become hot;

If the selector switch has not energized the heating wire to become hot, cold air will be blown. The purpose of the hairdryer 

is to dry and style the hair.

The selector switch on the handle of the hairdryer is generally divided into three gears, namely, off gear, cold air and hot air, 

the indicator lights are white, blue and red. Some hairdryers are also equipped with a motor speed switch on the handle for 

selecting the size of the airflow and the temperature of the hot air.

All types of hairdryers are equipped with a rotatable round air adjustment cover on the back or side of the casing. By rotating 

the cover to adjust the size of the cross-section of the air inlet, it is possible to adjust the speed of the delivered air and the te-

mperature of the hot air.

Structure and function of the hair dryer:

1. Housing. It protects the internal parts and also serves as an external decoration.

2. motor and fan blade. The motor is mounted inside the housing and the fan blade is mounted on the shaft end of the motor. 

When the motor rotates, air is drawn in through the air inlet and wind is blown out through the air outlet.

3. electric heating element. The electric heating element of the hairdryer is made of electric heating wire, installed in the air outlet 

of the hairdryer, and the air discharged by the motor is heated by the electric heating wire at the air outlet and then becomes hot 

air to be sent out.

Some hair dryers are equipped with a thermostat near the heating element, when the temperature exceeds a predetermined te-

mperature, the thermostat will cut off the circuit to play a protective role.

4. Windshield. Some hair dryers have a circular wind guide at the air inlet to adjust the air inlet. For hair dryers without a round 

wind guide, you can use a piece of paper to cover part of the air inlet, which can also regulate the air intake. If the air inlet is smaller, 

the air will be hotter, and if the air inlet is larger, the air will be less hot. It is important to note that the air inlet should not be block-

ed too tightly or the motor will be damaged or the heating element will burn out due to high temperatures.

5. Switch. Ordinary hair dryer switches generally have three positions: "hot air", "cold air" and "very". White means "stop", red means 

"hot air", and blue means "cold air".

Some hairdryers have a heating element consisting of two or three heating wires to regulate the temperature, controlled by a selector 

switch.

With the reform of the hairdryer and the gradual improvement of performance, the heating element of the hairdryer at home and abr-

oad is connected in series with a set of constant-temperature automatic electronic control elements, which can automatically turn on 

the circuit in the normal working state of the hairdryer. (Such as electric heating element overheating) automatically cut off the circuit.

In the duct shell material selection, by the past use of metal (such as copper or cold-rolled iron plate) materials to the use of thermopl-

astic engineering materials (mainly polycarbonate, modified polystyrene, modified polypropylene, etc.) production.

In fact, high-speed hair dryer and hair dryer drying principle is the same, are through the motor and PCBA control board to drive the 

hair dryer, the material inside the hair dryer determines the service life of the hair dryer, 2023 new high-speed hair dryer will come with 

negative ions and self-cleaning function, the benefit of using the latest high-speed hair dryer is that you can dry your hair quickly, the 

life of the hair dryer is longer, and you can also take care of your hair through negative ions!