How does a hair dryer work?

Although there are many kinds of hair dryers, their structures are similar. They are all composed of shell, handle, motor, fan blade, electric heating element, wind shield, switch and power cord. The function of each part of hair dryer:

•  What are the components of a hair dryer?

•  What is the working principle of hair dryer?

What are the components of a hair dryer?

1.Shell

It protects the internal parts and is also an external decoration.

2.Motor and blades

The motor is installed in the casing, and the blades are installed on the shaft end of the motor. When the motor rotates, air is sucked in from the air inlet and wind is blown out from the air outlet.

3.Heating element

The electric heating element of the hair dryer is wound with electric heating wire and installed at the outlet of the hair dryer. The wind discharged by the motor is heated by the electric heating wire at the outlet and sent out as hot air. Some hair dryers are equipped with thermostats near the electric heating elements, and when the temperature exceeds the preset temperature, the circuit is cut off for protection.

4.The windshield

Some hair dryers have a circular wind baffle at the air inlet to adjust the air intake. An electric hair dryer without a circular wind shield can cover a part of the air inlet with a piece of paper, which can also adjust the air intake. With less air intake, the blown-out wind is hotter, while with more air intake, the blown-out wind is not too hot. Attention should be paid to the fact that the tuyere cannot be blocked too much, otherwise the motor will be damaged or the electric heating element will be burnt out due to the high temperature.

5.Switch

Hair dryer switches generally have three positions: "hot air", "cold air" and "stop", with white for "stop", red for "hot air" and blue for "cold air".

Some electric heating elements of hair dryers are composed of two or three electric heating wires, which are used to adjust the temperature and controlled by a selector switch.

What is the working principle of hair dryer?

When the power supply is turned on, the motor drives the fan blades to rotate, so that air is sucked in from the air inlet, heated by the electric heating element, formed into hot air and then blown out from the air outlet. Hair dryers usually adjust the temperature of air supply by controlling the on-off of electric heating elements. When all electric heating elements are electrified and heated, hot air is blown out; When all the electric heating elements are cut off, cold air is blown out. The rotating speed of blades determines the air output, which is generally regulated by soft wind and fast wind.

Wenzhou BOYO Electric Appliance Co., Ltd. is a main professional supplier in beauty care electronic products & home electronic products in China. If you are interested in our products, please feel free to contact us.