Cartomizer for an Aerosol Generating Device with Fins

Abstract

A cartomizer for an aerosol generating device, includes a container for holding at least one reservoir configured to contain a vaporizable material; a vaporizing chamber fluidly connected to a mouth end by a vapor passage; a liquid transport element, extending from inside the at least one reservoir to inside the vaporizing chamber to convey the vaporizable material from the reservoir to the inside of the vaporizing chamber; and an air inlet arranged to supply the vaporizing chamber with air in use; wherein the liquid transport element is separated from at least one part of the at least one reservoir by at least one compartmenting wall arranged for creating at least one chamber, in particular at least one capillary chamber, communicating by a liquid restriction passage formed in the compartmenting wall of the chamber and wherein at least a portion of the liquid transport element extends in the chamber.

1 . A cartomizer for an aerosol generating device, the cartomizer comprising:
 a container for holding at least one reservoir configured to contain a vaporizable material;   a vaporizing chamber fluidly connected to a mouth end by a vapor passage;   a liquid transport element extending from inside the at least one reservoir to inside the vaporizing chamber in order to convey the vaporizable material from the reservoir to the inside of the vaporizing chamber; and   an air inlet arranged to supply the vaporizing chamber with air in use;   wherein the liquid transport element is separated from at least one part of the at least one reservoir by at least one compartmenting wall arranged for creating at least one capillary chamber communicating by a liquid restriction passage formed in one of the at least one first compartmenting wall of the at least one capillary chamber and wherein at least a portion of the liquid transport element extends in the capillary chamber.   
     
     
         2 . The cartomizer according to  claim 1 , further comprising a first sealing forming a first holder of the liquid transport element, wherein an upper surface of the first sealing forms a downstream one of the at least one compartmenting wall of the at least one capillary chamber. 
     
     
         3 . The cartomizer according to  claim 1 , the at least one first compartmenting wall comprises at least n first compartmenting walls forming at least n-1 chambers; each of then first compartmenting walls comprising at least one liquid restriction passage; wherein n is between 2 and 10. 
     
     
         4 . The cartomizer according to  claim 3 , wherein the at least one first compartmenting wall or at least some of the n first compartmenting walls have at least two restriction passages symmetrically distributed at the circumference of one of the at least one first compartmenting wall. 
     
     
         5 . The cartomizer according to  claim 2 , wherein the liquid transport element is rod-shaped and is longitudinally separated by at least one second compartmenting wall forming a second sealing, wherein the at least one second compartmenting wall forms two successive ones of the at least one capillary chamber. 
     
     
         6 . The cartomizer according to  claim 5 , wherein the liquid transport element extends in at least two different successive chambers. 
     
     
         7 . The cartomizer according to  claim 5 , wherein the distance between two of the first and second compartmenting walls forms a thickness of one of the at least one capillary chamber. 
     
     
         8 . The cartomizer according to  claim 1 , wherein the liquid restriction passage is no more than 1.5 mm, and/or a maximum opening surface area of the liquid restriction passage is no more than 1.8 mm 2 . 
     
     
         9 . The cartomizer according to  claim 1 , wherein
 the liquid restriction passage is configured to be closed by a check valve, and/or   the liquid restriction passage has a tapered profile with the smallest cross-section at the vaporizing chamber side.   
     
     
         10 . The cartomizer according to  claim 5 , further comprising a central holder, wherein the first compartmenting walls are formed as fins provided about the central holder. 
     
     
         11 . The cartomizer according to  claim 10 , wherein the central holder abuts against an outer body or shell of the container. 
     
     
         12 . The cartomizer according to  claim 10 , wherein the central holder is arranged for holding at least partially the liquid transport element. 
     
     
         13 . The cartomizer according to  claim 10 , wherein the central holder forms a third sealing around at least a portion of the liquid transport element. 
     
     
         14 . The cartomizer according to  claim 10 , wherein the first and second compartmenting walls, the central holder, the first sealing and/or the second sealing is/are made of elastomeric or silicone material. 
     
     
         15 . The cartomizer according to  13 ,
 wherein the first sealing and the central holder form at least partially the vaporizing chamber.   
     
     
         16 . The cartomizer according to  claim 1 , wherein the liquid transport element comprises a porous capillary member. 
     
     
         17 . The cartomizer according to  claim 9  wherein the check valve comprises a one way valve. 
     
     
         18 . The cartomizer according to  claim 11 , wherein the fins of the central holder abut against the outer body or shell of the container.