The hair dryer is a combination of a set of electric heating wires and a high-speed small fan.
When electrified, the heating wire will generate heat, and the wind blown by the fan will become hot air after passing through the heating wire. If only a small fan rotates and the electric heating wire is not hot, then wind is blown out instead of heat.
The wind blown by the hair dryer belongs to dry wind. If it is used for too long, it is easy to cause water loss and thermal damage.
The secret of minimizing injury is to pat your hair dry with a towel, gently comb it with your hands, and then use a hair dryer.
Hair dryers are mainly used for hair drying and styling, but they can also be used for local drying, heating and physical therapy in laboratories, physical therapy rooms, industrial production and artistic design.
According to the type of motor used, it can be divided into AC series excitation type, AC shielded pole type and DC permanent magnet type. Series-excited hair dryer has the advantages of large starting torque and high rotating speed, and is suitable for manufacturing high-power hair dryers. The disadvantage is that the noise is high, and the commutator has certain interference to telecommunication equipment.
The advantage of hood-pole blower is that it has low noise and does not interfere with telecommunication equipment. Disadvantages are slow speed, poor starting performance and heavy weight.
The advantages of permanent magnet hair dryer are light weight, high rotating speed, simple manufacturing process, low cost, good quality and low price.
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.