The electric heating element of the hair dryer is wound with an electric heating wire and installed at the air outlet of the hair dryer. The wind discharged by the motor is heated by the electric heating wire at the air outlet, and the electric heating wire turns red when heated.

Some hair dryers are equipped with thermostats near the electric heating elements, which cut off the circuit when the temperature exceeds the predetermined temperature and play a protective role.

Extended data:

Working principle of hair dryer:

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.

Reference source: Baidu Encyclopedia-Hair dryer