探秘蒸汽型电子烟工作原理

摘要：

文章讨论了两种新型烟草产品：加热不燃烧型和蒸汽型电子烟。前者通过加热烟草产生尼古丁气溶胶，后者则通过电加热将提取的尼古丁烟油雾化。研究重点是蒸汽型电子烟的雾化过程，包括发热丝、烟油和导油棉的作用及其热量传递。文章指出，烟油与烟具的适配和温度控制是雾化效果的关键，提出了两项建议：一是开发发热丝的温度测试平台，结合数值模拟分析其热性能参数；二是开发多孔介质的流动测试平台，通过原位观测和数值模拟研究流体流动特性。

新型烟草分为加热不燃烧型电子烟和蒸汽型电子烟。加热不燃烧型电子烟是将烟草薄片加热至200~300℃后产生含有尼古丁的气溶胶。蒸汽型电子烟是将烟叶中的尼古丁提取物制作成烟油，再利用电能驱动金属丝发热来雾化烟油，产生含有尼古丁的气溶胶。

  该文主要针对蒸汽型电子烟的雾化过程展开研究，从发热丝、烟油、导油棉以及雾化过程中热量传递路径等方面，探究影响雾化过程的主要因素。

  烟油及烟具的适配是发挥雾化效果的关键，将烟油及烟具联系起来的关键参数就是“温度”，因此针对如何利用温度将发热丝、多孔介质及烟油联系起来，提出以下2点建议：

（1）对于发热丝，开发温度测试平台，找出发热丝温升及温度分布的参数，例如发热丝材质热导率、密度、比热以及发热丝的结构参数等。与此同时，可以结合数值模拟的手段对比分析。

（2）对于多孔介质，开发流动测试平台，测试其孔径、孔隙率以及渗透率。并可通过原位观测以及数值模拟结合的手段研究流体在其内部流动的特性。

New tobacco products are categorized into heat-not-burn electronic cigarettes and vapor-type electronic cigarettes. Heat-not-burn electronic cigarettes work by heating tobacco slices to 200-300°C to produce a nicotine-containing aerosol. Vapor-type electronic cigarettes create a nicotine aerosol by first extracting nicotine from tobacco leaves to make e-liquid, and then using electrical energy to heat a metal wire that vaporizes the e-liquid.

This paper primarily investigates the vaporization process of vapor-type electronic cigarettes, examining the main factors that affect the process, including the heating wire, e-liquid, wicking material, and the path of heat transfer during vaporization.

The compatibility between the e-liquid and the device is crucial for effective vaporization, with "temperature" being the key parameter linking the e-liquid and the device. Therefore, the paper proposes two suggestions regarding how to utilize temperature to connect the heating wire, porous medium, and e-liquid:

(1) For the heating wire, develop a temperature testing platform to identify parameters such as the rise in temperature and temperature distribution, including the thermal conductivity, density, specific heat, and structural parameters of the heating wire material. At the same time, comparative analysis can be conducted using numerical simulation.

(2) For the porous medium, develop a flow testing platform to test its pore size, porosity, and permeability. Additionally, the characteristics of fluid flow within the medium can be studied through in-situ observation combined with numerical simulation.

原文始发于微信公众号（雾化探秘）：探秘蒸汽型电子烟工作原理