Aerosol generation device and generation method

1. An aerosol generation device comprising:

a case into which a cigarette is insertable;

a heater arranged in the case and configured to heat the cigarette inserted into the case; and

a mainstream smoke passage connecting an internal end portion of the cigarette to a vaporizer,

wherein the vaporizer is configured to generate aerosol by heating a liquid composition and deliver the aerosol to the mainstream smoke passage, and

wherein the mainstream smoke passage comprises:

a first mainstream smoke passage extending in a longitudinal direction of the cigarette; and

a second mainstream smoke passage extending in a direction inclined with respect to a direction in which the first mainstream smoke passage extends.

2. The aerosol generation device of claim 1 , wherein the mainstream smoke passage is connected to the cigarette through a first end portion and is connected to the vaporizer through a second end portion that is opposite to the first end portion.

3. The aerosol generation device of claim 1 , wherein an inclined surface formed to be inclined with respect to the longitudinal direction of the cigarette is formed in a connecting portion between the first mainstream smoke passage and the second mainstream smoke passage.

4. The aerosol generation device of claim 1 , wherein a rounded surface is formed in a connecting portion between the first mainstream smoke passage and the second mainstream smoke passage.

5. The aerosol generation device of claim 1 , wherein the heater and the vaporizer are arranged in series in the longitudinal direction of the cigarette.

6. The aerosol generation device of claim 1 , wherein the heater and the vaporizer are arranged in parallel with respect to the longitudinal direction of the cigarette.