US 12,167,751 B2
Smoking substitute apparatus
Benjamin Illidge, Liverpool (GB); Huanghai Lu, Liverpool (GB); Benjamin Astbury, Liverpool (GB); Nikhil Aggarwal, Liverpool (GB); John Mckeon, Liverpool (GB); and Stephen Jones, Liverpool (GB)
Assigned to Imperial Tobacco Limited, Bristol (GB)
Filed by Imperial Tobacco Limited, Bristol (GB)
Filed on Mar. 14, 2022, as Appl. No. 17/694,128.
Application 17/694,128 is a continuation of application No. PCT/EP2020/076294, filed on Sep. 21, 2020.
Claims priority of application No. 19198541 (EP), filed on Sep. 20, 2019; and application No. 19198571 (EP), filed on Sep. 20, 2019.
Prior Publication US 2022/0192260 A1, Jun. 23, 2022
Int. Cl. A24F 40/10 (2020.01); A24F 40/44 (2020.01); A24F 40/465 (2020.01); A24F 40/485 (2020.01)
CPC A24F 40/10 (2020.01) [A24F 40/44 (2020.01); A24F 40/465 (2020.01); A24F 40/485 (2020.01)] 24 Claims
OG exemplary drawing
 
1. A smoking substitute apparatus having:
an air inlet;
an outlet;
a flow passage formed between the air inlet and the outlet;
a vaporization chamber in communication with the flow passage, the vaporization chamber having an aerosol generator configured to generate an aerosol from an aerosol precursor by heating,
wherein the aerosol generator comprises:
a vaporizer element loaded with aerosol precursor, the vaporizer element being heatable by a heater and presenting a vaporizer element surface to air in the vaporization chamber,
wherein the air inlet, flow passage, outlet and the vaporization chamber are configured so that:
when the aerosol precursor is an e-liquid consisting of 1.6% freebase nicotine and the remainder a 65:35 propylene glycol and vegetable glycerin mixture, the e-liquid having a boiling point of 209° C., air being drawn into the air inlet at a temperature of 25° C., and the vaporizer operated to release a vapor of total particulate mass 5 mg over a 3 second duration from the vaporizer element surface in an air flow rate between the air inlet and outlet of 1.3 L min−1, the cooling rate of the vapor is such that the time taken to cool to 50° C. is not less than 16 ms.