1. Basic principles
At present, resistance heating occupies the mainstream application. In addition, there are also application cases of ultrasonic atomization. Here we mainly discuss the basic principles and types of resistance heating.
Resistive heating: The Joule effect of current flowing through a conductor is used to generate heat energy, thereby heating the liquid for atomization.
Joule's Law is a law that quantitatively explains the conversion of electrical energy into heat energy by conduction current. The content is: The heat generated by current passing through a conductor is proportional to the square of the current, proportional to the resistance of the conductor, and proportional to the time of electricity. The mathematical expression of Joule's law: Q=I²Rt; for a purely resistive circuit, it can be derived: Q=W=Pt; Q=UIt; Q=(U²/R)t.
Among them, Q refers to heat, the unit is joule (J), I refers to current, the unit is ampere (A), R refers to resistance, the unit is ohm (Ω), t refers to time, the unit is second (s), all the above units are used It is a unit in the International System of Units.
2. Types of atomizing cores
There are many types of atomizer cores. According to the oil-conducting material, there are cotton cores and ceramic cores. According to the shape of the heating components, there are heating wires, heating meshes, printed metal films, etc.
Take the cotton core as an example. In the early days, the cotton core was wrapped with heating wire, but now most of it is an integrated cotton + etched mesh core.
In terms of ceramic cores, there are buried wire ceramic cores, embedded mesh ceramic cores, thick film printed ceramic cores, etc.
Embedded ceramic core
Thick film printed ceramic core
To sum up, the atomizing core is a key component of electronic cigarettes, and its main function is to atomize smoke oil. Currently, the principle of resistance heating is mainly used, and the Joule effect is used to convert electrical energy into thermal energy for atomization. According to the oil-conducting material and the shape of the heating component, there are many types of atomization cores, including cotton cores and ceramic cores, and their respective heating wires, meshes, and printed metal films. Different types of atomizer cores have their own characteristics in structure and performance, meeting the needs of different e-cigarette products.
