Aerosol generating articles and aerosol generating systems

Abstract

An aerosol generating article may include a front-end portion, through which an aerosol generated from a cartridge flows into the aerosol generating article, a medium portion positioned downstream of the front-end portion and including the aerosol generating material, a filter positioned downstream of the medium portion, a first wrapper surrounding the front-end portion, the medium portion, and the filter, a second wrapper surrounding the first wrapper, and a reactive material positioned between the first wrapper and the second wrapper, wherein, in a process in which the aerosol is liquefied as the aerosol passes through the aerosol generating article, the reactive material chemically reacts with the liquefied aerosol and ignites.

What is claimed is: 
     
         1 . An aerosol generating article, through which an aerosol generated from a cartridge passes, the aerosol generating article comprising:
 a front-end portion, through which the aerosol is introduced into the aerosol generating article;   a medium portion positioned downstream of the front-end portion and comprising an aerosol generating material;   a filter positioned downstream of the medium portion;   a first wrapper surrounding the front-end portion, the medium portion, and the filter;   a second wrapper surrounding the first wrapper; and   a reactive material positioned between the first wrapper and the second wrapper, wherein, in a process in which the aerosol is liquefied as the aerosol passes through the aerosol generating article, the reactive material chemically reacts with the liquefied aerosol and ignites.   
     
     
         2 . The aerosol generating article of  claim 1 , wherein the reactive material comprises potassium permanganate. 
     
     
         3 . The aerosol generating article of  claim 1 , wherein the reactive material chemically reacts with glycerin included in the liquefied aerosol. 
     
     
         4 . The aerosol generating article of  claim 1 , wherein the reactive material is applied in particle form between the first wrapper and the second wrapper. 
     
     
         5 . The aerosol generating article of  claim 4 , wherein the reactive material is applied at a position corresponding to an upstream portion of the medium portion or the filter, between the first wrapper and the second wrapper. 
     
     
         6 . The aerosol generating article of  claim 1 , wherein the first wrapper and the second wrapper discolor as the reactive material ignites. 
     
     
         7 . An aerosol generating system comprising:
 an aerosol generating article; and   an aerosol generating device comprising an article accommodation portion for accommodating the aerosol generating article, wherein   the aerosol generating article comprises   a front-end portion;   a medium portion positioned downstream of the front-end portion and comprising a first aerosol generating material;   a filter located downstream of the medium portion;   a first wrapper surrounding the front-end portion, the medium portion, and the filter;   a second wrapper surrounding the first wrapper; and   a reactive material positioned between the first wrapper and the second wrapper, wherein, in a process in which the aerosol is liquefied as the aerosol passes through the aerosol generating article, the reactive material chemically reacting with aerosol liquefied and igniting, wherein   the aerosol generating device comprises:   a main body comprising a cartridge accommodating portion; and   a cartridge accommodated in the cartridge accommodation portion and comprising a storage tank and an atomizer, wherein the storage tank stores a second aerosol generating material in a liquid phase and the atomizer is configured to generate aerosol by heating the second aerosol generating material, and   the aerosol generated from the second aerosol generating material passes through the aerosol generating article and then is discharged to outside of the aerosol generating device.   
     
     
         8 . The aerosol generating system of  claim 7 , wherein the article accommodation portion is arranged in the cartridge. 
     
     
         9 . The aerosol generating system of  claim 8 , wherein
 the aerosol generated from the second aerosol generating material flows into the article accommodation portion and then passes through the aerosol generating article.   
     
     
         10 . The aerosol generating system of  claim 7 , wherein
 the first wrapper and the second wrapper discolor as the reactive material ignites, and   the aerosol generating device further comprises a color sensor configured to detect discoloration of the second wrapper.   
     
     
         11 . The aerosol generating system of  claim 10 , wherein
 the color sensor is arranged at a position corresponding to a position of the reactive material, when the aerosol generating article is accommodated in the article accommodation portion.   
     
     
         12 . The aerosol generating system of  claim 11 , wherein
 the color sensor is arranged opposite to at least a portion of the reactive material, when the aerosol generating article is accommodated in the article accommodation portion.   
     
     
         13 . The aerosol generating system of  claim 11 , wherein
 the aerosol generating device further comprises a processor configured to control power supplied to a heater, based on a result of detection by the color sensor.