Patent attributes
An aerosol-generating system includes a liquid storage portion having a housing holding a liquid aerosol-forming substrate and a capillary medium. The housing has an opening. A fluid permeable heater assembly includes an arrangement of electrically conductive filaments arranged to define a substantially non-planar air impingement surface. The fluid permeable heater assembly extends across the opening of the housing. The capillary medium is provided in contact with the heater assembly. The capillary medium draws the liquid aerosol-forming substrate to the electrically conductive filament arrangement. The capillary medium includes a capillary medium opening allowing airflow to pass through the capillary medium.