Aerosol generating device having an internal heater

A cartridge, comprising:

• a storage portion configured to store an aerosol-forming substrate, the storage portion having an outer housing and an internal passageway, the storage portion forming a reservoir for the aerosol-forming substrate between the outer housing and the internal passageway;
• a vaporizer comprising an electric heater configured to heat the aerosol-forming substrate to form an aerosol, the vaporizer at least partially inside the internal passageway in the storage portion, the electric heater being connectable to an electric power supply in an aerosol generating device;
• and
• a porous interface at least partially lining the internal passageway configured to convey the aerosol-forming substrate from the storage portion towards the vaporizer,
• wherein the electric heater comprises a first electrical connection portion, a second electrical connection portion, and a heating filament between the first and the second electrical connection portions,
• wherein the first electrical connection portion and the second electrical connection portion each have a cylindrical shape, wherein the cylindrical shape of the first and the second electrical connection portions and the heating filament define a cylindrical bore, and wherein an air flow route is defined through the cylindrical bore.

An aerosol generating system, comprising:

• a cartridge and an aerosol generating device, the cartridge or the aerosol generating device comprising
• a storage portion configured to store an aerosol-forming substrate, the storage portion having an outer housing and an internal passageway, the storage portion forming a reservoir for the aerosol-forming substrate between the outer housing and the internal passageway;
• a vaporizer comprising an electric heater configured to heat the aerosol-forming substrate to form an aerosol, the vaporizer at least partially inside the internal passageway in the storage portion;
• and
• a porous interface at least partially lining the internal passageway configured to convey the aerosol-forming substrate from the storage portion towards the vaporizer,
• wherein the aerosol generating device is electrically operated,
• wherein the electric heater comprises a first electrical connection portion, a second electrical connection portion, and a heating filament between the first and the second electrical connection portions,
• wherein the first electrical connection portion and the second electrical connection portion each have a cylindrical shape, wherein the cylindrical shape of the first and the second electrical connection portions and the heating filament define a cylindrical bore, and wherein an air flow route is defined through the cylindrical bore.