US Patent 11330840 Shisha device with air preheat without combustion

A shisha device article includes a vessel and an aerosol-generating element. The vessel defines an interior configured to contain a volume of liquid. The vessel also includes a head space outlet. The aerosol-generating element is in fluid connection with the vessel. The aerosol-generating element includes (i) a cartridge receptacle for receiving a cartridge containing an aerosol-generating substrate; (ii) a heating element defining at least two surfaces of the cartridge receptacle; and (iii) an aerosol outlet in fluid connection with the cartridge receptacle and a fresh air inlet channel in fluid connection with the cartridge receptacle. The fresh air inlet channel is arranged to preheat air prior to the air entering the cartridge receptacle.