An Aerosol Generating Consumable

Abstract

An aerosol generating consumable includes: an aerosol substrate portion including an inlet end for air to be drawn into the aerosol substrate portion and an outlet end for aerosol to exit the aerosol substrate portion, wherein the aerosol substrate portion extends in a longitudinal direction from the outlet end to the inlet end; and a combustible heat source configured to be ignited to heat the aerosol substrate portion, wherein the combustible heat source is arranged to overlap with part of the aerosol substrate portion in the longitudinal direction, wherein the inlet end of the aerosol substrate portion is configured to extend beyond a distal end of the combustible heat source in the longitudinal direction.

1 . An aerosol generating consumable comprising:
 an aerosol substrate portion comprising an inlet end for air to be drawn into the aerosol substrate portion and an outlet end for aerosol to exit the aerosol substrate portion, wherein the aerosol substrate portion extends in a longitudinal direction from the outlet end to the inlet end; and   a combustible heat source configured to be ignited to heat the aerosol substrate portion,   wherein the combustible heat source is arranged to overlap with part of the aerosol substrate portion in the longitudinal direction,   wherein the inlet end of the aerosol substrate portion is configured to extend beyond a distal end of the combustible heat source in the longitudinal direction.   
     
     
         2 . The aerosol generating consumable according to  claim 1 , wherein a proximal end of combustible heat source extends to a region upstream of the outlet end of the aerosol substrate portion. 
     
     
         3 . The aerosol generating consumable according to any one of  claim 1 , further comprising a metal layer wrapping the aerosol substrate portion and extending from the inlet end to at least the outlet end of the aerosol substrate portion. 
     
     
         4 . The aerosol generating consumable according to any one of  claim 1 , further comprising a paper layer wrapping the aerosol substrate portion and extending from the inlet end to at least the outlet end of the aerosol substrate portion. 
     
     
         5 . The aerosol generating consumable according to  claim 1 , wherein the combustible heat source forms a tubular layer around the aerosol substrate portion. 
     
     
         6 . The aerosol generating consumable according to  claim 1 , wherein the combustible heat source comprises a repeated pattern of a region of higher height and/or width followed by a region of lower height and/or width along the longitudinal direction. 
     
     
         7 . The aerosol generating consumable according to any one of  claim 1 , wherein the combustible heat source is arranged in a meandering path extending along the longitudinal direction. 
     
     
         8 . An The aerosol generating consumable according to  claim 1 , further comprising a proximal filter at the outlet end of the aerosol substrate portion. 
     
     
         9 . The aerosol generating consumable according to  claim 1 , further comprising a distal filter at the inlet end of the aerosol substrate portion. 
     
     
         10 . The aerosol generating consumable according to  claim 8 , further comprising a distal filter at the inlet end of the aerosol substrate portion, wherein at least one of the proximal filter or the distal filter comprises graphene. 
     
     
         11 . An aerosol generating system comprising:
 the aerosol generating consumable according to  claim 1 ; and   an aerosol generating device for generating aerosol by combustion of the combustible heat source of the aerosol generating consumable, the device comprising a chamber for receiving at least part of the aerosol substrate portion and the combustible heat source in use,   wherein the chamber is arranged to surround the combustible heat source when the aerosol generating consumable is positioned in an insertion position in the chamber.   
     
     
         12 . The aerosol generating system according to  claim 11 , wherein a distal end of the chamber comprises a chamber air inlet configured to allow air to be drawn into the inlet end of the aerosol substrate portion of the aerosol generating consumable. 
     
     
         13 . The aerosol generating system according to  claim 12 , wherein the chamber air inlet is fluidically isolated from the combustible heat source when the aerosol generating consumable is positioned in the insertion position in the chamber. 
     
     
         14 . The aerosol generating system according to  claim 12  wherein the chamber comprises one or more air channels arranged downstream of the combustible heat source when the aerosol generating consumable is positioned in the insertion position. 
     
     
         15 . The aerosol generating system according to  claim 11  further comprising an igniter or lighter configured to ignite the distal end of the combustible heat source. 
     
     
         16 . The aerosol generating system according to  claim 15 , wherein the igniter or lighter is configured to reach a ignition temperature of at least about 380°° C.. 
     
     
         17 . The aerosol generating system according to  claim 15 , wherein the device further comprises a control unit configured to switch on the igniter or lighter and to switch off the igniter or lighter after a temperature of ignition of the combustible heat source is reached and/or after a time period comprised between 5 and 30 seconds is reached. 
     
     
         18 . The aerosol generating system according to  claim 15 , wherein the igniter or lighter is configured to reach a ignition temperature of at least about 420° C. 
     
     
         19 . The aerosol generating system according to  claim 15 , wherein the igniter or lighter is configured to reach a ignition temperature of at least about 500° C.