What is a hair dryer? How does a hair dryer work?

Many girls use hair dryers to dry their hair after washing, and life is increasingly inseparable from hair dryers. Next, Bian Xiao will tell you what a hair dryer is and how it works.

1. What is 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 advantages of hood blower are low noise, long service life and no interference 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.

Second, the 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.

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.

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 to minimize the damage is to pat the water off your hair with a towel, then gently comb your hair with your hands, and then use a hair dryer.

Hair dryer is mainly used to dry hair, and its working principle mainly depends on the motor to start the rotor to drive the blades to output ionic airflow.