With the increasingly severe global tobacco control environment, electronic cigarettes and other new types of tobacco have attracted worldwide attention. With the rise of electronic smoke, the safety of products has been paid more and more attention. The risk of explosion and combustion of electronic smoke has always existed under high temperature, so how to overcome these difficulties and monitor the working temperature of electronic smoke?
How does HNB work?
Let's take a look at the recent layout of heating unburned e-cigarettes by the global tobacco giants (Fermo will invest another $100 million this year to develop its traditional cigarette substitutes, and the heating unburned market is gradually expanding).
Heating unburned tobacco product is a new type of tobacco product that uses a special heating device (smoking device) to heat the treated tobacco (smoke bomb) to a certain temperature, but does not light the tobacco, so that the tobacco only heats but does not burn. It is heated enough to emit smoke, and the taste is closer to the real tobacco. The use of smoke bomb is not ignited in the air, and low degree of thermal cracking can occur when electric heating is around 300 ℃.
The heating temperature of the non burning cigarette is relatively high. How to detect and control the temperature? In the new type of electronic smoke (atomization and heating non combustion HNB), temperature control is generally set. At present, temperature control method is widely used to monitor, that is, to convert the temperature information by calculating the resistance change of the heating wire through the host chip. In addition, a temperature sensitive protection element, namely thermistor, is added, which is generally used to monitor the temperature of PCB, MOS tube and battery.