Heated aerosol-generating article with liquid aerosol-forming substrate and combustible heat generating element

1. A heatable aerosol-generating article, comprising:

a plurality of components assembled in the form of a rod, the article having a mouth end and a distal end upstream from the mouth end;

a combustible heat-generating element disposed at the distal end of the article and being configured to heat air drawn into the article;

a liquid aerosol-forming substrate disposed downstream of the combustible heat-generating element, the liquid aerosol-forming substrate being releasably contained within a frangible capsule, and the liquid aerosol-forming substrate comprising a nicotine solution and at least one aerosol-former;

a liquid retention medium configured to retain the liquid aerosol-forming substrate within the article,

wherein the frangible capsule is disposed within the liquid retention medium; and

a heat diffuser being in thermal contact with the combustible heat-generating element and disposed between the combustible heat-generating element and the liquid aerosol-forming substrate, air entering the article through an inlet flowing through the heat diffuser to be heated before flowing over the liquid aerosol-generating substrate to form an aerosol.

2. The heatable aerosol-generating article according to claim 1 , wherein the liquid retention medium is in the form of a tube having a lumen and the frangible capsule is disposed within the lumen of the tube.

3. The heatable aerosol-generating article according to claim 1 , wherein the liquid retention medium comprises an absorbent polymeric material.

4. The heatable aerosol-generating article according to claim 1 , further comprising a cooling section disposed downstream from the liquid aerosol-forming substrate.

5. The heatable aerosol-generating article according to claim 1 , wherein the at least one aerosol-former comprises at least one polyhydric alcohol.

6. The heatable aerosol-generating article according to claim 1 , wherein the liquid aerosol-forming substrate comprises between 10 weight percent and 25 weight percent water, an aerosol former, and at least one flavourant.

7. The heatable aerosol-generating article according to claim 1 , further comprising a mouthpiece filter disposed at the mouth end of the article.

8. The heatable aerosol-generating article according to claim 1 , wherein the plurality of components are assembled within a wrapper, the wrapper being formed from a sheet of liquid-impervious material.

9. The heatable aerosol-generating article according to claim 8 , wherein the wrapper is a sheet of polymeric material, a sheet of treated paper, or a sheet of metallic foil.

10. The heatable aerosol-generating article according to claim 1 , wherein the heat diffuser comprises a solid aerosol-forming substrate, the article thereby being configured to generate the aerosol from both the solid aerosol-forming substrate and the liquid aerosol-forming substrate.

11. The heatable aerosol-generating article according to claim 10 , wherein the solid aerosol-forming substrate is homogenised tobacco material.