Cartridge for use in an aerosol-generating system
A cartridge for an aerosol-generating system is provided, the cartridge including: a reservoir configured for liquid aerosol-forming substrate; a heating element configured to heat the liquid aerosol-forming substrate from the reservoir; and a wall including a porous material, such that: a first space adjacent to the heating element and between the wall and the heating element forms a hot zone, a second space adjacent to the heating element forms a feed zone, the reservoir is in fluid communication with the feed zone and the hot zone, at least a portion of the wall is positioned between the hot zone and the reservoir, the wall is in contact with the hot zone and the reservoir, and a portion of the wall in contact with the feed zone is thinner than a portion of the wall in contact with the hot zone.
1 . A cartridge for an aerosol-generating system, the cartridge comprising:
a reservoir configured for liquid aerosol-forming substrate;
a heating element configured to heat the liquid aerosol-forming substrate from the reservoir; and
a wall,
wherein:
a first space adjacent to the heating element and between the wall and the heating element forms a hot zone,
a second space adjacent to the heating element forms a feed zone,
the reservoir is in fluid communication with the feed zone and the hot zone,
at least a portion of the wall is positioned between the hot zone and the reservoir,
the wall is in contact with the hot zone and the reservoir, and
a portion of the wall in contact with the feed zone is thinner than a portion of the wall in contact with the hot zone.
2 . The cartridge according to claim 1 , wherein the wall thermally insulates the feed zone from the reservoir to a lesser extent than the wall thermally insulates the hot zone from the reservoir.
3 . The cartridge according to claim 1 , further comprising an air inlet and an air outlet, an air flow path being defined between the air inlet and the air outlet.
4 . The cartridge according to claim 1 , wherein a shortest distance between the wall and the heating element through the hot zone is less than a shortest distance between the wall and the heating element through the feed zone.
5 . The cartridge according to claim 1 , wherein at least a portion of the wall is positioned between the feed zone and the reservoir.
6 . The cartridge according to claim 1 , wherein the feed zone is adjacent to an opening in the wall.
7 . The cartridge according to claim 1 , further comprising a constricted passageway that connects the reservoir to the feed zone.
8 . The cartridge according to claim 1 , wherein the second space is between the wall and the heating element.
9 . An aerosol-generating system comprising a cartridge according to claim 1 .