hair dryer（3）

hair dryer（3）

The role of the components of the hair dryer

1. Shell. It protects internal parts and is also an external decoration.

2. Motor and fan blades. The motor is installed in the housing, and the fan blade is installed on the shaft end of the motor. When the motor rotates, air is drawn in from the air inlet and wind is blown out from the air outlet.

3. Electric heating element. The electric heating element of the hair dryer is made of electric heating wire, and is 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 sent out as hot air.

Some hair dryers are equipped with a thermostat near the heating element to cut off the circuit when the temperature exceeds a predetermined temperature to protect it.

%1. Windshield. Some hair dryers have a circular wind deflector at the air inlet to adjust the air intake. For a hair dryer without a round wind baffle, a piece of paper can be used to cover a part of the air inlet and the air intake can also be adjusted. If the air intake is small, the air blowing out will be hotter, and if the air intake is large, the blowing air will not be too hot. It should be noted that the tuyere should not be blocked too much, otherwise it will damage the motor or burn out the heating element due to the high temperature.

5. Switch. The hair dryer switch generally has three positions of "hot air", "cold air", and "stop". White means "stop", red means "hot air", and blue means "cold air". The heating element of some hair dryers is composed of two or three sections of heating wire, which is used to adjust the temperature and is controlled by a selector switch.

With the reform and gradual improvement of the performance of hair dryers, most of the heating elements of hair dryers at home and abroad are connected in series with a set of thermostatic automatic electronic control elements, which can automatically switch on the circuit under the normal working condition of the hair dryer. (Such as overheating of electric heating elements) automatically cut off the circuit. In the selection of the material of the air duct shell, metal (such as copper or cold-rolled iron plate) materials were used in the past to use thermoplastic engineering materials (mainly polycarbonate, modified polystyrene, modified polypropylene, etc.) to make.