Department of Molecular, Cell, and Systems Biology, University of California, Riverside, CA 92521, USA.
Int J Environ Res Public Health. 2019 Aug 14;16(16):2904. doi: 10.3390/ijerph16162904.
The design of electronic cigarette (EC) atomizing units has evolved since their introduction over 10 years ago. The purpose of this study was to evaluate atomizer design in ECs sold between 2011-2017. Atomizers from 34 brands representing three generations of ECs were dissected and photographed using a stereoscopic microscope. Five distinct atomizer design categories were identified in first generation products (cig-a-like/cartomizer) and three categories were found in the third generation. Atomizers in most cig-a-like ECs contained a filament, thick wire, wire joints, air-tube, wick, sheath, and fibers, while some later models lacked some of these components. Over time design changes included an increase in atomizer size; removal of solder joints between wires; removal of Polyfil fibers; and removal of the microprocessor from Vuse. In second and third generation ECs, the reservoirs and batteries were larger, and the atomizing units generally lacked a thick wire, fibers, and sheath. These data contribute to an understanding of atomizer design and show that there is no single design for ECs, which are continually evolving. The design of the atomizer is particularly important as it affects the performance of ECs and what transfers into the aerosol.
电子烟（EC）雾化器的设计自 10 多年前推出以来一直在不断发展。本研究旨在评估 2011-2017 年间销售的 EC 雾化器的设计。使用立体显微镜对来自 34 个品牌的代表三代 EC 的雾化器进行解剖和拍照。在第一代产品（类似香烟的电子烟/ Cartomizer）中发现了五个不同的雾化器设计类别，在第三代产品中发现了三个类别。大多数类似香烟的 EC 雾化器中含有灯丝、粗金属丝、金属丝接头、空气管、棉芯、套管和纤维，而一些后来的型号则缺少其中的一些组件。随着时间的推移，设计变化包括雾化器尺寸的增加；去除金属丝之间的焊点；去除 Polyfil 纤维；以及从 Vuse 中移除微处理器。在第二和第三代 EC 中，储液器和电池更大，雾化器通常缺乏粗金属丝、纤维和套管。这些数据有助于了解雾化器的设计，并表明 EC 没有单一的设计，而是在不断发展。雾化器的设计尤为重要，因为它会影响 EC 的性能和进入气溶胶的物质。
