Replaceable cartridge with capillary

Abstract

A replaceable cartridge detachably connectable to an aerosol-generating device is provided, the cartridge including: a liquid storage portion to store a liquid agent and including a liquid outlet; and a capillary in fluid communication with the storage portion and the liquid outlet and having a cross-section and a longitudinal length, a surface of the cross-section remaining constant along at least a part of the longitudinal length, the storage portion including a first wall with a first inner surface and a second wall with a second inner surface, the capillary being formed between opposing first and second inner surfaces, the storage portion including an outer shell as the first wall and an inner shell as the second wall, the inner shell housed in the outer shell of the storage portion, the capillary located between the inner and the outer shell, and the liquid agent including at least one aerosol-former.

1 .- 15 . (canceled) 
     
     
         16 . A replaceable cartridge configured for being detachably connectable to an aerosol-generating device, the replaceable cartridge comprising:
 a liquid storage portion configured to store a liquid agent, the liquid storage portion comprising a liquid outlet configured to direct the liquid agent out of the liquid storage portion; and   a capillary being in fluid communication with the liquid storage portion and the liquid outlet, the capillary having a cross-section and a longitudinal length,   wherein a surface of the cross-section of the capillary remains constant along at least a part of the longitudinal length of the capillary,   wherein the liquid storage portion further comprises a first wall with a first inner surface and a second wall with a second inner surface,   wherein the capillary is formed between an opposing first inner surface and second inner surface,   wherein the liquid storage portion further comprises an outer shell as the first wall and an inner shell as the second wall, the inner shell being housed in the outer shell of the liquid storage portion,   wherein the capillary is located between the inner shell and the outer shell, and   wherein the liquid agent comprises at least one aerosol-former selected from a group consisting of: polyhydric alcohols, esters of polyhydric alcohols, and aliphatic esters of mono-, di-, or polycarboxylic acids.   
     
     
         17 . The replaceable cartridge according to  claim 16 , wherein the capillary is located between an outer surface of the inner shell and an inner surface of the outer shell. 
     
     
         18 . The replaceable cartridge according to  claim 16 ,
 wherein the liquid storage portion further comprises a housing, and   wherein one of:
 the inner shell and the outer shell are located within the housing, or 
 the outer shell comprises the housing. 
   
     
     
         19 . The replaceable cartridge according to  claim 16 ,
 wherein the inner shell and the outer shell are tubular, and   wherein the cross-section of the capillary has a circular surface, preferably a ring-shaped surface.   
     
     
         20 . The replaceable cartridge according to  claim 16 ,
 wherein the inner shell and the outer shell are tubular, and   wherein the cross-section of the capillary has a ring-shaped surface.   
     
     
         21 . The replaceable cartridge according to  claim 16 ,
 wherein the liquid storage portion further comprises an upstream cross-sectional area at an upstream end of the capillary and a downstream cross-sectional area at a downstream end of the capillary, and   wherein a cross-sectional area tapers from the upstream cross-sectional area towards the downstream cross-sectional area.   
     
     
         22 . The replaceable cartridge according to  claim 16 ,
 wherein the liquid storage portion further comprises a longitudinal axis,   wherein the capillary extends along an extension direction, and   wherein the extension direction is tilted towards the longitudinal axis.   
     
     
         23 . The replaceable cartridge according to  claim 22 ,
 wherein the extension direction is tilted towards the longitudinal axis by an angle of 0.1 degree to 15 degrees.   
     
     
         24 . The replaceable cartridge according to  claim 21 , wherein the liquid storage portion further comprises or has a frustoconical shape. 
     
     
         25 . The replaceable cartridge according to  claim 21 , further comprising an upstream lid, the upstream lid configured for closing an upstream end of the liquid storage portion. 
     
     
         26 . The replaceable cartridge according to  claim 25 , wherein the upstream end of the inner shell comprises at least one slot, the at least one slot being configured to be spaced apart from the upstream lid when the upstream lid closes the upstream end of the liquid storage portion. 
     
     
         27 . The replaceable cartridge according to  claim 16 ,
 wherein the inner shell and the outer shell are hollow polygonal prisms, and   wherein a surface of the cross-section of the capillary has a hollow polygonal shape.   
     
     
         28 . The replaceable cartridge according to  claim 16 , wherein the capillary comprises protrusions being in contact with the first inner surface and the second inner surface. 
     
     
         29 . The replaceable cartridge according to  claim 28 , wherein the protrusions comprise ribs. 
     
     
         30 . The replaceable cartridge according to  claim 28 , wherein the protrusions extend along a central longitudinal axis of the liquid storage portion. 
     
     
         31 . The replaceable cartridge according to  claim 30 , wherein a downstream portion of the inner shell being adjacent to the liquid outlet is free of the protrusions. 
     
     
         32 . The replaceable cartridge according to  claim 16 , wherein the inner shell comprises an air inlet, the air inlet being configured for allowing air to enter the inner shell. 
     
     
         33 . The replaceable cartridge according to  claim 32 , wherein a diameter of the air inlet is between 0.5 millimeter and 6 millimeters. 
     
     
         34 . The replaceable cartridge according to  claim 16 ,
 further comprising an aerosolization element configured for generating an aerosol from the liquid agent,   wherein the aerosolization element is in fluid communication with the liquid outlet.   
     
     
         35 . An aerosol-generating system, comprising:
 a replaceable cartridge according to  claim 16 ; and   an aerosol-generating device being configured to be detachably connected to the cartridge.