US-12616250-B2 - Aerosol-generating article and aerosol generation device used therewith

US12616250B2US 12616250 B2US12616250 B2US 12616250B2US-12616250-B2

Abstract

An aerosol-generating article and an aerosol generation device used therewith are provided. The aerosol generation device according to some embodiments of the present disclosure may include a housing configured to form an accommodation space in which an aerosol-generating article is accommodated and a heater part configured to heat the aerosol-generating article accommodated in the accommodation space, wherein the aerosol-generating article may include a tobacco rod, which includes a cavity segment filled with tobacco granules, and a filter rod. By the heater part having a structure that heats only the cavity segment or heats the tobacco rod from the inside and outside simultaneously, the tobacco granules filled in the cavity segment can be effectively heated.

Inventors

Chan Min KWON
Eun Mi JEOUNG

Assignees

KT&G CORPORATION

Dates

Publication Date: 20260505
Application Date: 20220421
Priority Date: 20210621

Claims (12)

1 . An aerosol generation device comprising: a housing configured to form an accommodation space in which an aerosol-generating article is accommodated; a heater part configured to heat the aerosol-generating article accommodated in the accommodation space, wherein the heater part includes an external heating element configured to heat the aerosol-generating article from outside and an internal heating element configured to heat the aerosol-generating article from inside, wherein the aerosol-generating article includes a tobacco rod, which is filled with tobacco granules, and a filter rod, wherein the tobacco rod includes a first filter segment, a second filter segment, and a cavity segment formed by the first filter segment and the second filter segment, wherein the tobacco granules are filled in the cavity segment, and wherein the external heating element includes a first external heating element configured to heat an upstream portion of the cavity segment and a second external heating element configured to heat a downstream portion of the cavity segment.
2 . The aerosol generation device of claim 1 , wherein: the second filter segment is disposed upstream of the cavity segment and includes a paper material; and a thickness of the internal heating element is 2.0 mm or less.
3 . The aerosol generation device of claim 1 , wherein: the heater part includes a heating element configured to heat the tobacco rod from an outside; and the external heating element is disposed to heat only the cavity segment.
4 . The aerosol generation device of claim 1 , wherein: a filling rate of the tobacco granules in the cavity segment is 80 vol % or lower; a density of the tobacco granules is in a range of 0.5 g/cm 3 to 1.2 g/cm 3 ; a diameter of the tobacco granules is in a range of 0.3 mm to 1.2 mm; and resistance to draw of the first filter segment, which is disposed downstream of the cavity segment, is in a range of 50 mmH 2 O/60 mm to 150 mmH 2 O/60 mm.
5 . The aerosol generation device of claim 1 , wherein: the first filter segment includes a paper material whose paper width is in a range of 100 mm to 200 mm; and resistance to draw of the first filter segment is in a range of 50 mmH 2 O/60 mm to 100 mmH 2 O/60 mm.
6 . The aerosol generation device of claim 1 , wherein a heat conduction element configured to transfer heat generated from the external heating element to an inside of the tobacco rod.
7 . The aerosol generation device of claim 1 , wherein: the tobacco granules or the tobacco rod include a particulate susceptor material; and the heater part includes an inductor configured to inductively heat the particulate susceptor material.
8 . The aerosol generation device of claim 1 , wherein the filter rod includes a cooling segment and a mouthpiece segment.
9 . The aerosol generation device of claim 1 , wherein the second external heating element is disposed to form an unheated portion in a vicinity of a downstream end of the cavity segment.
10 . The aerosol generation device of claim 1 , wherein the first external heating element and the second external heating element operate at different heating temperatures.
11 . The aerosol generation device of claim 1 , further comprising a third external heating element configured to heat a region within the cavity segment that is not heated by the first external heating element and the second external heating element.
12 . The aerosol generation device of claim 1 , wherein the external heating element and the internal heating element operate at different temperatures.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a National Stage of International Application No. PCT/KR2022/005747 filed Apr. 21, 2022, claiming priority based on Korean Patent Application No. 10-2021-0079979 filed Jun. 21, 2021. TECHNICAL FIELD The present disclosure relates to an aerosol-generating article and an aerosol generation device used therewith, and more particularly, to a tobacco granule-based aerosol-generating article and an aerosol generation device used with the article. BACKGROUND ART In recent years, demand for alternative articles that overcome the disadvantages of traditional cigarettes has increased. For example, demand for devices that electrically heat a cigarette stick to generate an aerosol (e.g., cigarette-type electronic cigarettes) has increased. Accordingly, active research has been carried out on electric heating-type aerosol generation devices and cigarette sticks (or aerosol-generating articles) applied thereto. Meanwhile, reconstituted tobacco leaves are mostly used as a tobacco material of the cigarette sticks, and shredded tobacco leaves are also used occasionally. Recently, using a tobacco material in a granular form has been proposed. For example, mounting a cartridge containing tobacco granules on an aerosol generation device to perform smoking has been proposed. However, cartridge-type products have disadvantages in that they are less familiar to consumers than cigarette sticks, are not able to provide the same smoking sensation as cigarette sticks, and cause an increase in manufacturing costs. DISCLOSURE Technical Problem Some embodiments of the present disclosure are directed to providing an aerosol-generating article capable of providing a smoking function on the basis of tobacco granules. Some embodiments of the present disclosure are also directed to providing an aerosol generation device that can be used with a tobacco granule-based aerosol-generating article. Some embodiments of the present disclosure are also directed to providing an aerosol generation device capable of effectively heating a tobacco granule-based aerosol-generating article. Some embodiments of the present disclosure are also directed to providing an aerosol generation device capable of operating in a set mode among a smokeless mode and a smoking mode and an aerosol-generating article that can be used with the aerosol generation device. Objectives of the present disclosure are not limited to the above-mentioned objectives, and other unmentioned objectives should be clearly understood by those of ordinary skill in the art to which the present disclosure pertains from the description below. Technical Solution Some embodiments of the present disclosure provide an aerosol generation device including a housing configured to form an accommodation space in which an aerosol-generating article is accommodated and a heater part configured to heat the aerosol-generating article accommodated in the accommodation space, wherein the aerosol-generating article includes a tobacco rod, which is filled with tobacco granules, and a filter rod. In some embodiments, the tobacco rod may include a first filter segment, a second filter segment, and a cavity segment formed by the first filter segment and the second filter segment, and the tobacco granules may be filled in the cavity segment. In some embodiments, the second filter segment may be disposed upstream of the cavity segment and include a paper material, the heater part may include a heating element configured to heat the tobacco rod from the inside, and a thickness of the heating element may be 2.0 mm or less. In some embodiments, the heater part may include a heating element configured to heat the tobacco rod from the outside, and the heating element may be disposed to heat only the cavity segment. In some embodiments, the heater part may include a heating element configured to heat the tobacco rod from the outside, and the heating element may be disposed to heat the cavity segment and disposed so that an unheated portion is formed in the vicinity of a downstream end of the cavity segment. In some embodiments, the heater part may include a first heating element configured to heat the tobacco rod from the outside and a second heating element configured to heat the tobacco rod from the inside. In some embodiments, the heater part may include a heating element configured to heat the tobacco rod from the outside and a heat conduction element configured to transfer heat generated from the heating element to the inside of the tobacco rod. In some embodiments, the tobacco granules or the tobacco rod may include a particulate susceptor material, and the heater part may include an inductor configured to inductively heat the susceptor material, Advantageous Effects According to some embodiments of the present disclosure, an aerosol-generating article which includes a tobacco rod filled with tobacco granules and an aerosol generation device used with the ae