Aerosol generating article with directing element

Abstract

An aerosol-generating article is provided, including: a heat source; an aerosol-forming substrate downstream of the heat source; an airflow-directing element downstream of the substrate, the airflow-directing element including an air-permeable segment defining a cavity; at least one air inlet to allow air to be drawn into the article; and first and second airflow pathways, in which the first airflow pathway extends from the air inlet, through the substrate, and into a distal end of the cavity, in which the second airflow pathway extends from the air inlet, through the air-permeable segment, and into the cavity at a point downstream of the distal end of the cavity, in which the air inlet is located downstream of the distal end of the airflow-directing element, and in which a longitudinal cross-sectional area of the cavity is at least 30 percent of a total longitudinal cross-sectional area of the article.

1 .- 12 . (canceled) 
     
     
         13 . An aerosol-generating article, comprising:
 a heat source;   an aerosol-forming substrate downstream of the heat source;   an airflow-directing element downstream of the aerosol-forming substrate, the airflow-directing element comprising an air-permeable segment, the air-permeable segment defining a cavity;   at least one air inlet configured to allow air to be drawn into the aerosol-generating article;   a first airflow pathway; and   a second airflow pathway,   wherein the first airflow pathway extends from the at least one air inlet, through the aerosol-forming substrate, and into a distal end of the cavity,   wherein the second airflow pathway extends from the at least one air inlet, through the air-permeable segment, and into the cavity at a point downstream of the distal end of the cavity,   wherein the at least one air inlet is located downstream of the distal end of the airflow-directing element, and   wherein a longitudinal cross-sectional area of the cavity is at least 30 percent of a total longitudinal cross-sectional area of the aerosol-generating article.   
     
     
         14 . The aerosol-generating article according to  claim 13 , wherein the air-permeable segment comprises a material having a density of at least 0.05 milligrams per cubic millimetre. 
     
     
         15 . The aerosol-generating article according to  claim 13 , wherein the at least one air inlet is located no more than 3 millimetres downstream of the distal end of the airflow-directing element. 
     
     
         16 . The aerosol-generating article according to  claim 13 , wherein the first airflow pathway extends from the at least one air inlet, through the air-permeable segment, through the aerosol-forming substrate, and into the distal end of the cavity. 
     
     
         17 . The aerosol-generating article according to  claim 13 , wherein the second airflow pathway extends from the at least one air inlet, through the air-permeable segment, and directly into the cavity at a point downstream of the distal end of the cavity. 
     
     
         18 . The aerosol-generating article according to  claim 13 , wherein the at least one air inlet is located no more than 5 millimetres downstream of the distal end of the airflow-directing element. 
     
     
         19 . The aerosol-generating article according to  claim 13 , wherein a downstream end of the aerosol-forming substrate abuts an upstream end of the airflow-directing element. 
     
     
         20 . The aerosol-generating article according to  claim 13 , wherein the air-permeable segment is a cylindrical air-permeable segment and the cavity is a cylindrical cavity. 
     
     
         21 . The aerosol-generating article according to  claim 13 , wherein the cavity has a circle shaped cross-section, or a square shaped cross-section, or a cloverleaf shaped cross-section. 
     
     
         22 . The aerosol-generating article according to  claim 13 , wherein a longitudinal cross-sectional area of the cavity is less than or equal to 40 percent of a total longitudinal cross-sectional area of the aerosol-generating article.