"Hundred Seconds Laughing Hair Dryer": Using the safest PTC ceramic heating element to achieve three major breakthroughs:
1. physical grade fire, can be used continuously for 24 hours.
PTC ceramics have positive temperature coefficient characteristics: when the temperature exceeds the safe value (about 150 ℃), the resistance automatically soars and the current approaches zero. Even if the air outlet is completely blocked and the fan stops, it will not produce open flame or red burning. This does not rely on electronic temperature control, but the physical characteristics of the material itself, 100 percent reliable.
2. long durable, suitable for high frequency use
School hair dryers are switched on and off hundreds of times a day, which is dozens of times the frequency of household use. Ordinary electric heating wire will oxidize and become fine and burn out in a few months. PTC ceramic has no oxidation problem, the theoretical life of tens of thousands of hours, the failure rate is very low, reducing the burden of logistics maintenance.
3. No open flame, no risk of thermal radiation ignition
The heating wire emits red light at high temperatures, and the heat radiation is sufficient to ignite the nearby cotton wool and paper towels. PTC ceramic work does not emit light, the surface temperature is automatically limited to a safe range, can not ignite the general combustible.