1. Garbage and dirt will stick to the central shaft of the motor after a long time of use. Once the dust layer sticks to it, the motor speed will drop sharply. It is conceivable that when the motor speed slows down, the hot air cannot be completely blown outward, and the hot air cannot blow. When it comes out, it will cause the plastic shell to become hot and the internal parts will be burned immediately, and then you can smell the burning smell of plastic and electrical appliances, and then deform. If you don’t turn off the switch immediately, it will cause a fire accident, so this is light Disadvantages of hair dryer.
2. After all, a heavy hair dryer is more expensive than a light one, because the material used is better than plastic, and the casing is made of metal for personal safety and is grounded. The relative quality of the motor has to keep up. Good motor lubrication and insulation are also better than plastic ones. It is better, and it is also durable. Even if it is broken, it is easy to repair and has a long life.
3. The hair dryer is basically assigned 220v voltage input to two parts, one is assigned to the heating wire, and the other is assigned to the bridge rectifier, which is converted into DC after step-down and then output to the motor. After the motor rotates, the hot air is blown out. It is the principle of the whole power supply part.
4. The principle of weak hot air and strong hot air: it is controlled by the gear position of the switch. The principle is that 220v voltage enters the heating wire, and then taps on the heating wire to achieve the high and low voltage output. The high voltage is strong hot air and the low voltage is Weak hot air.
4. The principle of weak hot air and strong hot air: it is controlled by the gear position of the switch. The principle is that 220v voltage enters the heating wire, and then taps on the heating wire to achieve the high and low voltage output. The high voltage is strong hot air and the low voltage is Weak hot air.
