A Cartridge for a Vapour Generating Device

Abstract

A cartridge for a vapour generating device includes a liquid store for containing a vapour generating liquid and a vapour generating unit. The unit includes a vaporisation device. The vaporisation device includes a heating element including an inductively heatable susceptor. The unit further includes a liquid transfer element arranged to hold and transfer vapour generating liquid from the liquid store to the vaporisation device by capillary action. The susceptor is arranged in thermal proximity to the liquid transfer element to heat and vaporise the vapour generating liquid held and transferred to the vaporisation device by the liquid transfer element. The susceptor surrounds the liquid transfer element and has an inner surface that contacts an outer surface of the liquid transfer element. The susceptor has an inner diameter of from 3 mm to 10 mm. The liquid transfer element has an outer diameter corresponding to the inner diameter of the susceptor.

1 . A cartridge for a vapour generating device, the cartridge comprising:
 a liquid store for containing a vapour generating liquid; and   a vapour generating unit, the vapour generating unit comprising:
 a vaporisation device including a heating element comprising an inductively heatable susceptor; and 
 a liquid transfer element arranged to hold and transfer vapour generating liquid from the liquid store to the vaporisation device by capillary action; 
   
       wherein the inductively heatable susceptor is arranged in thermal proximity to the liquid transfer element to heat and vaporise the vapour generating liquid held and transferred to the vaporisation device by the liquid transfer element; wherein the inductively heatable susceptor surrounds the liquid transfer element and has an inner surface that contacts an outer surface of the liquid transfer element; wherein the inductively heatable susceptor has an inner diameter of from 3 mm to 10 mm, the liquid transfer element having an outer diameter corresponding to the inner diameter of the inductively heatable susceptor. 
     
     
         2 . The cartridge according to  claim 1 , wherein the inner diameter of the inductively heatable susceptor is from 5 mm to 8 mm. 
     
     
         3 . The cartridge according to  claim 1 , wherein the inner diameter of the inductively heatable susceptor is 7 mm. 
     
     
         4 . The cartridge according to  claim 1 , wherein the inductively heatable susceptor has an axial length of from 0.5 mm to 15 mm. 
     
     
         5 . The cartridge according to  claim 1 , wherein the inductively heatable susceptor has an axial length of from 3 mm to 5 mm. 
     
     
         6 . The cartridge according to  claim 1 , wherein the inductively heatable susceptor comprises a susceptor tube. 
     
     
         7 . The cartridge according to  claim 1 , wherein the liquid transfer element comprises at least two different materials, wherein a first of the at least two different materials is a porous ceramic; and wherein a second of the at least two different materials has a thermal conductivity and/or mechanical strength which is different from the porous ceramic. 
     
     
         8 . The cartridge according to  claim 7 , wherein the second of the at least two different materials comprises air pockets. 
     
     
         9 . The cartridge according to  claim 1 , wherein the inductively heatable susceptor is configured to be spaced apart from an induction coil of a vapour generating device by a distance of less than 4 mm. 
     
     
         10 . The cartridge according to  claim 1 , wherein the inductively heatable susceptor is configured to be spaced apart from an induction coil of a vapour generating device by a distance of less than 2 mm. 
     
     
         11 . The cartridge according to  claim 1 , wherein the inductively heatable susceptor is configured to be spaced apart from an induction coil of a vapour generating device by a distance of less than 1 mm. 
     
     
         12 . The cartridge according to  claim 1 , wherein the cartridge comprises a cup defining an airflow guide, wherein the vapour generating unit is disposed in an interior of the cup, wherein air is flowable in use from the surrounding environment into the interior of the cup through one or more air inlets to flow over the inductively heatable susceptor. 
     
     
         13 . The cartridge according to  claim 12 , wherein the liquid transfer element comprises a hollow core and a base, wherein the hollow core defines a vaporisation chamber, wherein the base comprises at least one indentation which engages with the cup, wherein the at least one indentation is configured such that an airflow path is defined for allowing air to flow from the interior of the cup into the vaporisation chamber. 
     
     
         14 . The cartridge according to  claim 13 , wherein the at least one indentation comprises a plurality of indentations. 
     
     
         15 . A vapour generating system comprising a vapour generating device and the cartridge according to  claim 1 . 
     
     
         16 . The vapour generating system according to  claim 15 , wherein the inductively heatable susceptor is spaced apart from an induction coil of the vapour generating device by a distance of less than 4 mm. 
     
     
         17 . The vapour generating system according to  claim 15 , wherein the inductively heatable susceptor is spaced apart from an induction coil of the vapour generating device by a distance of less than 2 mm. 
     
     
         18 . The vapour generating system according to  claim 15 , wherein the inductively heatable susceptor is spaced apart from an induction coil of the vapour generating device by a distance of less than 1 mm.