Aerosol-Generating Device

Abstract

The present disclosure is directed to an aerosol-generating device that maximizes convective heat transfer therein.

1 . An aerosol-generating device comprising:
 a device housing;   a mouthpiece connected to a first side of the housing;   an oven chamber connected to a second side of the housing that is opposite the first side of the housing, the oven chamber having a cavity;   an inner tube in the device housing that connects the cavity of the oven chamber to the mouthpiece, the inner tube forming a gradient providing convective heat transfer of aerosol in the inner tube; and   a motherboard and a battery in the housing located between the mouthpiece and oven chamber.   
     
     
         2 . The aerosol-generating device of  claim 1 , wherein the optimal length and width of the inner tube is calculated from a formula for convective heat transfer: 
       
         
           
             
               q 
               = 
               
                 
                   h 
                   · 
                   A 
                   · 
                   Δ 
                 
                 ⁢ 
                 
                   T 
                   . 
                 
               
             
           
         
       
     
     
         3 . The aerosol-generating device of  claim 1 , further comprising an outer tube that circumferentially surrounds the inner tube. 
     
     
         4 . The aerosol-generating device of  claim 3 , wherein the inner tube and the outer tube is a space. 
     
     
         5 . The aerosol-generating device of  claim 4 , wherein the space acts as a thermal break or thermal barrier. 
     
     
         6 . The aerosol-generating device of  claim 1 , further comprising an electrical assembly. 
     
     
         7 . The aerosol-generating device of  claim 6 , wherein the motherboard and the battery is in the electrical assembly. 
     
     
         8 . The aerosol-generating device of  claim 3 , wherein the inner tube has a decreased thickness to maximize the thermal conductivity of the inner tube. 
     
     
         9 . The aerosol-generating device of  claim 8 , wherein the outer tube has increased thickness to minimize the thermal conductivity of the outer tube  104 . 
     
     
         10 . An aerosol-generating device comprising:
 a device housing;   a mouthpiece connected to a first side of the housing;   an oven chamber connected to a second side of the housing that is opposite the first side of the housing, the oven chamber having a cavity;   an inner tube in the device housing that connects the cavity of the oven chamber to the mouthpiece, the inner tube forming a gradient providing convective heat transfer of aerosol in the inner tube;   an electrical assembly located between the mouthpiece and oven chamber; and   a motherboard and a battery in the electrical assembly.   
     
     
         11 . The aerosol-generating device of  claim 10 , wherein the motherboard and battery are located in the middle of the electrical assembly. 
     
     
         12 . The aerosol-generating device of  claim 11 , wherein the optimal length and width of the inner tube is calculated from a formula for convective heat transfer: 
       
         
           
             
               q 
               = 
               
                 
                   h 
                   · 
                   A 
                   · 
                   Δ 
                 
                 ⁢ 
                 
                   T 
                   .