What is the principle of e-cigarettes?

Electronic cigarettes are composed of lithium batteries, cartridges (containing liquid volatile substances), pressure sensors, control circuit boards, light-emitting diodes, etc. Its working principle is to heat the liquid inside the smoke bomb by applying electricity to form smoke for inhalation.

The development of e-cigarettes and their derivative products has gone through three generations. The first-generation e-cigarettes were similar in appearance and feel to traditional cigarettes. They were electronic products that simulated cigarettes. The inventors claimed that their original intention was to help people quit smoking. The second generation is larger in size, does not look like a cigarette, and has various shapes, such as pens, screwdrivers, water pipes, etc., but the basic structure of the battery, atomizer and cartridge remains unchanged. The third generation is similar to the second generation, but it is larger in size and has more personalized functions. For example, it can adjust the electrical resistance of the atomizer by itself to control the size of the smoke.

The e-liquid of e-cigarettes mainly contains nicotine, solvents and flavorings. Nicotine, also known as nicotine, is addictive. The solvents include propylene glycol, glycerol, polyols, water, etc., accounting for approximately 90% of the mass of e-liquid. Among them, glycerol and propylene glycol are gradually being replaced by ethylene glycol. There are many flavors of essence. In addition to these three major types of components, coumarin, acetamide, benzo (a) pyrene, ultrafine particles, harmful metals, formaldehyde, acetaldehyde, propionaldehyde, acrolein and other substances have also been detected in the e-liquid available on the market.