Aerosol-generating device, and a capsule for use in an aerosol-generating device

1. An aerosol-generating system, comprising:

a capsule comprising:

a shell comprising a base and at least one side wall extending from the base, the shell containing an aerosol-forming substrate having a solid component and comprising at least one of a nicotine salt matrix and tobacco, and

a lid sealed on the at least one side wall for forming a sealed capsule,

wherein the base comprises a recess extending into said shell along a longitudinal axis of the capsule; and

an aerosol-generating device comprising:

a power supply,

at least one heater,

a cavity configured to receive the capsule, and

a mouthpiece comprising a piercing element configured to pierce the lid of the capsule,

wherein the at least one heater is configured to be insertable into the recess of the capsule, and

wherein the mouthpiece comprises at least one air inlet and at least one air outlet, and the piercing element comprises at least one first conduit extending between the at least one air inlet and a distal end of the piercing element, and at least one second conduit extending between the distal end of the piercing element and the at least one air outlet, such that in use, when a user draws on the mouthpiece, air flows along an airflow pathway extending from the at least one air inlet, through the at least one first conduit, through a portion of the capsule, through the at least one second conduit, and exits the at least one outlet.

2. The aerosol-generating system according to claim 1 , wherein a shape and dimensions of an external surface of the at least one heater are configured to substantially match a shape and dimensions of the recess of the capsule.

3. The aerosol-generating system according to claim 1 , wherein the at least one heater is frusto-conical.

4. The aerosol-generating system according to claim 1 , comprising at least two heaters consisting of at least one first heater configured to be insertable in the recess of the capsule and at least one second heater within the cavity.

5. The aerosol-generating system according to claim 1 , wherein the at least one second heater conforms to a shape of side walls of the cavity.

6. The aerosol-generating system according to claim 1 , wherein the at least one heater is an electrically powered heater comprising at least one electrically resistive track provided on a flexible substrate.

7. The aerosol-generating system according to claim 1 , wherein a longitudinal length of the recess is at least about 50% of a longitudinal length of the at least one side wall.

8. The aerosol-generating system according to claim 1 , wherein the base is substantially circular, and the recess has a substantially circular cross-section, a ratio of a radius of the base to a radius of the recess at the base being between about 1.5 and about 4.0.

9. The aerosol-generating system according to claim 1 , wherein the recess has a frusto-conical shape, and a substantially circular cross-section.

10. The aerosol-generating system according to claim 1 , wherein a longitudinal length of the at least one side wall is at least 2 times a radius of the base.

11. The aerosol-generating system according to claim 1 , wherein the capsule is filled with the aerosol-forming substrate to reach a level between about 90% and about 110% of a longitudinal length of the recess.

12. The aerosol-generating system according to claim 1 , wherein the aerosol-forming substrate comprises nicotine and at least one aerosol-former.