Multi-liquid cartridge assembly for inductively heated aerosol-generating device

Abstract

A cartridge assembly for an aerosol-generating device is provided, including: an airflow channel; a first tubular liquid storage portion including a first inner tubular core element extending along a longitudinal axis of the first tubular liquid storage portion; and a second tubular liquid storage portion including a second inner tubular core element extending along a longitudinal axis of the second tubular liquid storage portion, the first tubular liquid storage portion being arranged upstream of the second tubular liquid storage portion, and he airflow channel being spaciously circumscribed by the first and the second tubular liquid storage portions. An aerosol-generating system including the cartridge assembly and an aerosol-generating device is also provided. A method for manufacturing the cartridge assembly for an aerosol-generating device is also provided.

1 .- 15 . (canceled) 
     
     
         16 . A cartridge assembly for an aerosol-generating device, comprising:
 an airflow channel;   a first tubular liquid storage portion comprising a first inner tubular core element extending along a longitudinal axis of the first tubular liquid storage portion; and   a second tubular liquid storage portion comprising a second inner tubular core element extending along a longitudinal axis of the second tubular liquid storage portion,   wherein the first tubular liquid storage portion is arranged upstream of the second tubular liquid storage portion, and   wherein the airflow channel is spaciously circumscribed by the first and the second tubular liquid storage portions.   
     
     
         17 . The cartridge assembly according to  claim 16 , wherein the airflow channel is coaxially circumscribed by the first and the second tubular liquid storage portions. 
     
     
         18 . The cartridge assembly according to  claim 16 , wherein the first inner tubular core element comprises a first inner tubular wall, the second inner tubular core element comprises a second inner tubular wall, and the first and the second inner tubular walls confine the airflow channel. 
     
     
         19 . The cartridge assembly according to  claim 16 ,
 wherein the first and the second tubular liquid storage portions are separated by a transversal wall, and   wherein the transversal wall is oriented perpendicular to a longitudinal axis of the cartridge assembly.   
     
     
         20 . The cartridge assembly according to  claim 16 , wherein the first and the second tubular liquid storage portions comprise a same liquid aerosol-forming substrate or different liquid aerosol-forming substrates. 
     
     
         21 . The cartridge assembly according to  claim 16 , wherein the airflow channel comprises a Venturi element. 
     
     
         22 . The cartridge assembly according to  claim 21 , wherein the Venturi element links the first inner tubular core element with the second inner tubular core element. 
     
     
         23 . The cartridge assembly according to  claim 18 , wherein the first inner tubular wall comprises a first tubular fluid-permeable portion and the second inner tubular wall comprises a second tubular fluid-permeable portion. 
     
     
         24 . The cartridge assembly according to  claim 23 , wherein the first tubular fluid-permeable portion is arranged at a distal end of the first tubular liquid storage portion and the second tubular fluid-permeable portion is arranged at a distal end of the second tubular liquid storage portion. 
     
     
         25 . The cartridge assembly according to  claim 23 , wherein the first and the second tubular fluid-permeable portions are porous. 
     
     
         26 . The cartridge assembly according to  claim 16 , wherein the first and the second tubular liquid storage portions and the airflow channel are integrally formed. 
     
     
         27 . The cartridge assembly according to  claim 16 ,
 further comprising a first heating element and a second heating element,   wherein the airflow channel comprises the first and the second heating elements,   wherein the first inner tubular wall comprises a first tubular fluid-permeable portion and the second inner tubular wall comprises a second tubular fluid-permeable portion, and   wherein the first inner tubular core element comprises the first heating element arranged at the first tubular fluid-permeable portion and the second inner tubular core element comprises the second heating element arranged at the second tubular fluid-permeable portion.   
     
     
         28 . The cartridge assembly according to  claim 27 ,
 wherein the first heating element comprises a first hollow tubular shaped susceptor,   wherein the first hollow tubular shaped susceptor is in direct contact with a coaxially circumscribed first hollow tubular wick,   wherein the second heating element comprises a second hollow tubular shaped susceptor, and   wherein the second hollow tubular shaped susceptor is in direct contact with a coaxially circumscribed second hollow tubular wick.   
     
     
         29 . The cartridge assembly according to  claim 16 , further comprising a mouthpiece. 
     
     
         30 . The cartridge assembly according to  claim 29 ,
 wherein the mouthpiece comprises a distal wall, and   wherein the distal wall is configured to seal the second liquid storage portion.   
     
     
         31 . The cartridge assembly according to  claim 16 ,
 wherein the cartridge assembly has a cylindrical shape, wherein an external diameter of the cartridge assembly is between 5 millimetres to 10 millimetres,   wherein the cartridge assembly has a length between 35 millimetres to 75 millimetres,   wherein outer walls of the cartridge assembly have a thickness between 0.1 millimetre to 0.9 millimetre, and   wherein a length of each of the first and the second tubular liquid storage portions is between 8 millimetres to 20 millimetres.   
     
     
         32 . An aerosol-generating system, comprising
 the cartridge assembly according to  claim 16 ; and   an aerosol-generating device, comprising a heating chamber configured for insertion of the cartridge assembly and at least one inductor coil at least partly circumscribing the heating chamber for inductively heating the cartridge assembly.   
     
     
         33 . The aerosol-generating system according to  claim 32 ,
 wherein the aerosol-generating device further comprises a first inductor coil and a second inductor coil, and   wherein the first inductor coil is arranged upstream of the second inductor coil and wherein the first and the second inductor coils can be powered simultaneously or separately.   
     
     
         34 . The aerosol-generating system according to  claim 33 , wherein the first inductor coil is arranged at the distal end of the first tubular liquid storage portion and the second inductor coil is arranged at the distal end of the second tubular liquid storage portion. 
     
     
         35 . A method for manufacturing a cartridge assembly for an aerosol-generating device, the method comprising:
 (i) providing a cartridge component comprising
 an airflow channel, 
 a first tubular liquid storage portion, and 
 a second tubular liquid storage portion, 
 wherein the airflow channel is coaxially circumscribed by the first and the second tubular liquid storage portions, 
 wherein the first tubular liquid storage portion is upstream from the second tubular liquid storage portion, 
 wherein the first tubular liquid storage portion comprises a first inner tubular wall and the second tubular liquid storage portion comprises second inner tubular wall, and 
 wherein the first inner tubular wall comprises a first fluid-permeable portion and the second inner tubular wall comprises a second fluid-permeable portion; 
   (ii) inserting a first susceptor-and-wick element into the first fluid-permeable portion from a distal end of the cartridge and inserting the second susceptor-and-wick element into the second fluid-permeable portion from a proximal end of the cartridge;   (iii) inserting a liquid aerosol-forming substrate into the first tubular liquid storage portion from the distal end of the cartridge;   (iv) sealing the distal end of the cartridge with a distal sealing element;   (v) turning the cartridge around 180 degrees;   (vi) inserting liquid aerosol-forming substrate into the second tubular liquid storage portion from the proximal end of the cartridge; and   (vii) sealing the second tubular liquid storage portion by a distal end of a mouthpiece.