Cartridge for inductively heated aerosol-generating device

Abstract

A cartridge for an aerosol-generating device is provided, including: a hollow tubular susceptor arrangement; a hollow tubular wick element coaxially circumscribing the hollow tubular susceptor arrangement; and a hollow tubular liquid storage portion coaxially circumscribing the hollow tubular wick element. An aerosol-generating system is also provided, including the cartridge and an aerosol-generating device including a heating chamber configured for insertion of the cartridge and an inductor coil at least partly circumscribing the heating chamber for inductively heating the cartridge. A method for manufacturing a cartridge for an aerosol-generating device is also provided.

1 .- 16 . (canceled) 
     
     
         17 . A cartridge for an aerosol-generating device, comprising:
 a hollow tubular susceptor arrangement;   a hollow tubular wick element coaxially circumscribing the hollow tubular susceptor arrangement; and   a hollow tubular liquid storage portion coaxially circumscribing the hollow tubular wick element.   
     
     
         18 . The cartridge according to  claim 17 , further comprising an airflow path extending along a longitudinal center axis of the hollow tubular susceptor arrangement. 
     
     
         19 . The cartridge according to  claim 17 ,
 further comprising a first sealing element arranged at a first end of the hollow tubular susceptor arrangement and the hollow tubular wick element, and a second sealing element arranged at a opposite second end of the hollow tubular susceptor arrangement and the hollow tubular wick element,   wherein the sealing elements are each formed as a sealing disk, and   wherein the sealing elements each have a concavely-shaped, a convexly-shaped, or a corrugated outer side wall.   
     
     
         20 . The cartridge according to  claim 17 , wherein a wall of the hollow tubular susceptor arrangement comprises a slit extending from a proximal end to a distal end of the wall of the hollow tubular susceptor arrangement. 
     
     
         21 . The cartridge according to  claim 17 , wherein a wall of the hollow tubular susceptor arrangement is fluid-permeable. 
     
     
         22 . The cartridge according to  claim 17 , wherein a wall of the hollow tubular susceptor arrangement comprises perforations. 
     
     
         23 . The cartridge according to  claim 17 ,
 wherein a wall of the hollow tubular susceptor arrangement comprises a slit extending along an axial direction from the proximal end to the distal end of the wall of the hollow tubular susceptor arrangement, or   wherein a wall of hollow tubular susceptor arrangement comprises a slit extending along a direction angled with respect to the axial direction from the proximal end to the distal end of the wall of the hollow tubular susceptor arrangement.   
     
     
         24 . The cartridge according to  claim 21 ,
 wherein the hollow tubular susceptor arrangement comprises a porous carbon-based material, or   wherein the hollow tubular susceptor arrangement comprises a perforated ferromagnetic alloy material.   
     
     
         25 . The cartridge according to  claim 17 ,
 wherein the hollow tubular susceptor arrangement, or at least a hollow tubular susceptor element of the hollow tubular susceptor arrangement, is porous,   wherein the wick element is porous,   wherein a porosity of the hollow tubular wick element is in a range of 30% to 80%,   wherein a porosity of the hollow tubular susceptor arrangement, or of at least the hollow tubular susceptor element of the hollow tubular susceptor arrangement, is in a range of 25% to 80%, and   wherein the porosity of the hollow tubular susceptor arrangement, or of at least the hollow tubular susceptor element of the hollow tubular susceptor arrangement, is greater than the porosity of the hollow tubular wick element.   
     
     
         26 . The cartridge according to  claim 17 ,
 wherein the hollow tubular susceptor arrangement, or at least a hollow tubular susceptor element of the hollow tubular susceptor arrangement, is porous,   wherein the wick element is porous,   wherein a porosity of the hollow tubular wick element is in a range of 50% to 60%,   wherein a porosity of the hollow tubular susceptor arrangement, or of at least the hollow tubular susceptor element of the hollow tubular susceptor arrangement, is in a range of 65% to 75%, and   wherein the porosity of the hollow tubular susceptor arrangement, or of at least the hollow tubular susceptor element of the hollow tubular susceptor arrangement, is greater than the porosity of the hollow tubular wick element.   
     
     
         27 . The cartridge according to  claim 17 , wherein a fluid-permeable portion of an inner wall of the liquid storage portion is in direct physical contact with an outer wall of the hollow tubular wick element, thereby allowing for a liquid aerosol-forming substrate to migrate from the liquid storage portion to the hollow tubular wick element. 
     
     
         28 . The cartridge according to  claim 17 ,
 wherein the cartridge has a cylindrical shape, and   wherein an outer diameter of the cartridge is between 5 millimeters to 10 millimeters.   
     
     
         29 . The cartridge according to  claim 17 ,
 wherein the cartridge has a cylindrical shape, and   wherein an outer diameter of the cartridge is between 6 millimeters to 8 millimeters.   
     
     
         30 . The cartridge according to  claim 17 , wherein an outer diameter of the hollow tubular susceptor arrangement is between 80% and 99% of an inner diameter of the hollow tubular wick element. 
     
     
         31 . The cartridge according to  claim 17 , wherein an outer diameter of the hollow tubular wick element is smaller than an inner diameter of hollow tubular liquid storage portion. 
     
     
         32 . The cartridge according to  claim 31 ,
 wherein the outer diameter of the hollow tubular wick element is between 80% and 99% of the inner diameter of hollow tubular liquid storage portion, and   wherein the outer diameter of the hollow tubular wick element is between 2.3 millimeters and 7.1 millimeters, and the inner diameter of hollow tubular liquid storage portion is between 2.4 millimeters and 8 millimeters.   
     
     
         33 . The cartridge according to  claim 31 ,
 wherein the outer diameter of the hollow tubular wick element is between 80% and 99% of the inner diameter of hollow tubular liquid storage portion, and   wherein the outer diameter of the hollow tubular wick element is between 2.7 millimeters and 4.7 millimeters, and the inner diameter of hollow tubular liquid storage portion is between 2.8 millimeters and 5.0 millimeters.   
     
     
         34 . The cartridge according to  claim 17 , wherein the hollow tubular liquid storage portion is configured as a container or reservoir to store the liquid aerosol-forming substrate. 
     
     
         35 . An aerosol-generating system, comprising:
 a cartridge according to  claim 17 ; and   an aerosol-generating device, comprising a heating chamber configured for insertion of the cartridge and an inductor coil at least partly circumscribing the heating chamber for inductively heating the cartridge.   
     
     
         36 . A method for manufacturing a cartridge for an aerosol-generating device, the method comprising:
 providing a wick-and-susceptor assembly comprising a hollow tubular susceptor arrangement and a hollow tubular wick element coaxially circumscribing the hollow tubular susceptor arrangement; and   inserting the wick-and-susceptor assembly into a hollow tubular liquid storage portion such that the hollow tubular liquid storage portion coaxially circumscribes the wick-and-susceptor assembly.