Aerosol Generating System

Abstract

An aerosol generating system including a case defining an oven cavity having a bottom surface and an opening portion, a tobacco stick received in the oven cavity having a first end facing the bottom surface, and a first air flow path extending through the oven cavity and the tobacco stick, having an inlet and an outlet, the inlet including a nozzle mounted on the bottom surface of the oven cavity and extending through the first end. The tobacco stick includes an acetate tube adjacent to the first end, the acetate tube including an inner channel, the first air flow path extending through the inner channel.

1 . An aerosol generating system comprising:
 a case defining an oven cavity; the oven cavity having a bottom surface and an opening portion,   a tobacco stick at least partially received in the oven cavity, the tobacco stick having a first end facing the bottom surface, and   a first air flow path extending through the oven cavity and the tobacco stick, the first air flow path having an inlet fluidly connecting the first air flow path to an exterior of the oven cavity and an outlet fluidly connecting the first air flow path to an exterior of the tobacco stick, the inlet including a nozzle mounted on the bottom surface of the oven cavity and extending through the first end,   wherein the tobacco stick includes an acetate tube adjacent to the first end, the acetate tube including an inner channel, the first air flow path extending through the inner channel.   
     
     
         2 . The aerosol generating system of  claim 1 , wherein the acetate tube includes a first frontal surface, a second frontal surface, a cylindrical surface extending between the first and second frontal surfaces, and an aperture extending between the cylindrical surface and the inner channel. 
     
     
         3 . The aerosol generating system of  claim 2 , wherein the first frontal surface is proximal to the bottom surface and the second frontal surface is distal to the bottom surface, the inner channel including a blind bore extending from the first frontal surface. 
     
     
         4 . The aerosol generating system of  claim 1 , wherein the nozzle includes a substantially frustoconical outer surface, a first axial portion extending through the bottom surface and a second axial portion extending through the first end in order to penetrate the tobacco stick, the first axial portion being proximate to a longer diameter end of the substantially frustoconical outer surface, and the second axial portion being proximate to a shorter diameter end of the substantially frustoconical outer surface. 
     
     
         5 . The aerosol generating system of  claim 4 , wherein the substantially frustoconical outer surface includes a plurality of circumferential ribs. 
     
     
         6 . The aerosol generating system of  claim 4 , wherein the substantially frustoconical outer surface includes an outer thread. 
     
     
         7 . The aerosol generating system of  claim 1 , wherein the nozzle includes a cylindrical inner through-hole having a circular axial cross section. 
     
     
         8 . The aerosol generating system of  claim 7 , wherein the cylindrical inner through-hole includes an inner thread. 
     
     
         9 . The aerosol generating system of  claim 1 , wherein the tobacco stick comprises a second end longitudinally opposed to the first end, and a thicker portion between the first end and the second end. 
     
     
         10 . The aerosol generating system of  claim 9 , wherein the thicker portion includes at least one layer of tipping paper. 
     
     
         11 . The aerosol generating system of  claim 10 , wherein a thickness of the at least one layer of tipping paper is between 0.02 mm and 0.2 mm. 
     
     
         12 . The aerosol generating system of  claim 9 , wherein the thicker portion includes 1 to 10 layers of tipping paper. 
     
     
         13 . The aerosol generating system of  claim 1 , wherein the inner channel includes a frustoconical recess having a smaller diameter end proximal to the bottom surface and a larger diameter end distal to the bottom surface. 
     
     
         14 . The aerosol generating system of  claim 1 , wherein the acetate tube includes an array of piercings extending towards a first frontal surface proximal to the bottom surface from a second frontal surface distal to the bottom surface. 
     
     
         15 . The aerosol generating system of  claim 1 , wherein the nozzle includes a sliding part configured to move along a longitudinal direction of the nozzle, a spring configured to move the sliding part in a direction extending from the bottom surface towards the opening portion, and a sensor configured to detect a position of the sliding part. 
     
     
         16 . The aerosol generating system of  claim 15 , wherein the sliding part is ferromagnetic, and the sensor includes a hall effect sensor. 
     
     
         17 . The aerosol generating system of  claim 1 , wherein the case includes an outer cavity, the oven cavity being located in the outer cavity so as to define a radial gap between the outer cavity and the oven cavity, and the aerosol generating system further includes a thermal insulation layer arranged radially outside the oven cavity. 
     
     
         18 . The aerosol generating system of  claim 1 , further including a battery volume, the case including a second air flow path extending continuously through the case, the second air flow path being in fluid communication with the inlet of the first air flow path, at least a portion of the second air flow path being proximate to the battery volume. 
     
     
         19 . The aerosol generating system of  claim 1 , further including an electronic unit, the case including a second air flow path extending continuously through the case, the second air flow path being in fluid communication with the inlet of the first air flow path, at least a portion of the second air flow path being proximate to the electronic unit. 
     
     
         20 . The aerosol generating system of  claim 1 , further including a flavor reception space proximate to the bottom surface.