Aerosol Generating Device Comprising a Supporting Structure Receiving Heating Plates

Abstract

The present invention concerns an aerosol generating device configured to operate with a flat-shaped tobacco article including a substrate portion. The device includes:a heating chamber extending according to a chamber axis and configured to receive the substrate portion of the tobacco article, the heating chamber having a heating plate defining two opposite edges extending according to the chamber;a supporting structure extending along the chamber axis and comprising two recess portions facing one another, each recess portion being adapted to receive at least a part of one of said edges of the heating plate and delimited by two opposite retention sides designed to retain the corresponding edge; andat least one retention side of each recess portion being inclined in respect with a transversal axis parallel to the heating plate and perpendicular to the chamber axis.

1 . An aerosol generating device configured to operate with a flat-shaped tobacco article comprising a substrate portion, the device comprising:
 a heating chamber extending along a chamber axis and being configured to receive the substrate portion of the tobacco article, the heating chamber comprising a heating plate defining two opposite edges extending according to the chamber axis;   a supporting structure extending along the chamber axis and comprising two recess portions facing one another, each recess portion being adapted to receive at least a part of one of said edges of the heating plate and delimited by two opposite retention sides designed to retain a corresponding edge;   at least one retention side of each recess portion being inclined in respect with a transversal axis parallel to the heating plate and perpendicular to the chamber axis.   
     
     
         2 . The aerosol generating device according to  claim 1 , wherein both retention sides of each recess portion are inclined in respect with the transversal axis. 
     
     
         3 . The aerosol generating device according to  claim 1 , wherein each of the retention sides of each recess portion is designed to be in contact with the corresponding edge of the heating plate. 
     
     
         4 . The aerosol generating device according to  claim 1 , wherein at least one retention side of each recess portion has a rounded edge. 
     
     
         5 . The aerosol generating device according to  claim 1 , wherein each recess portion has a groove extending along the chamber axis. 
     
     
         6 . The aerosol generating device according to  claim 5 , wherein each groove extends substantially along an entire length of the heating chamber. 
     
     
         7 . The aerosol generating device according to  claim 1 , wherein the heating plate is arranged to be in contact with the substrate portion of the tobacco article. 
     
     
         8 . The aerosol generating device according to  claim 1 , wherein the heating plate is made from a ceramic substrate. 
     
     
         9 . The aerosol generating device according to  claim 1 , wherein the supporting structure comprises two symmetric parts, each symmetric part comprising one of said recess portions. 
     
     
         10 . The aerosol generating device according to  claim 9 , further comprising a holding structure designed to clump said symmetric parts together according to the transversal axis. 
     
     
         11 . The aerosol generating device according to  claim 10 , wherein the holding structure is a part of a housing of the device. 
     
     
         12 . The aerosol generating device according to  claim 1 , wherein the heating chamber comprises two heating plates facing each other. 
     
     
         13 . The aerosol generating device according to  claim 12 , wherein the supporting structure comprises a recess portion for each edge of each heating plate. 
     
     
         14 . The aerosol generating device according to  claim 1 , wherein the heating chamber is delimited according to the transversal axis by a pair of lateral walls formed by the supporting structure. 
     
     
         15 . The aerosol generating device according to  claim 13 , wherein each lateral wall extends between a pair of recess portions. 
     
     
         16 . The aerosol generating device according to  claim 3 , wherein one of the retention sides presents a greater area of contact with the corresponding edge of the heating plate than the other retention side of a same recess portion. 
     
     
         17 . The aerosol generating device according to  claim 8 , wherein the at least one retention side which is inclined comprises a chamfer facing the heating plate. 
     
     
         18 . The aerosol generating device according to  claim 12 , wherein each recess portion comprises an air gap between the heating plate and the at least one retention side which is inclined in respect with the transversal axis parallel to the heating plate and perpendicular to the chamber axis.