Aerosol-generating article and aerosol-generating system

Abstract

An aerosol-generating article according to one embodiment may comprise: a front end portion through which aerosol generated from a cartridge is introduced into the aerosol-generating article; a medium portion positioned downstream of the front end portion and including an aerosol-generating material; a filter portion positioned downstream of the medium portion; a first wrapper surrounding the front end portion, the medium portion, and the filter portion; a second wrapper surrounding the first wrapper; and a reaction material positioned between the first wrapper and the second wrapper and which chemically reacts with liquefied aerosol in a process of passing through the aerosol-generating article and thereby ignites.

Description

Aerosol-generating articles and aerosol-generating systems

[0001] Embodiments relate to aerosol generating articles and aerosol generating systems for preventing reuse of aerosol generating articles.

[0002] Recently, there has been a growing demand for alternative methods that overcome the shortcomings of conventional cigarettes. For example, there is a growing demand for systems that generate aerosol by heating a cigarette (or "aerosol-generating article") using an aerosol-generating device, rather than by burning the cigarette to produce the aerosol.

[0003] Research is actively underway on methods for generating aerosols by heating aerosol-generating substances in various phases, and in particular, there is great interest in methods for generating aerosols by low-temperature heating or non-heating using aerosols generated by directly heating only liquid-phase aerosol-generating substances.

[0004] When users do not feel a sufficient smoking sensation after smoking an aerosol-generating product by heating it, they try to reheat the already used aerosol-generating product and use it again, but there are cases where they do not receive a good quality aerosol.

[0005] Various embodiments of the present disclosure aim to provide a user with a sufficient smoking sensation and high quality aerosol by providing an aerosol generating article and an aerosol generating system in which the color of the wrapper can change when the aerosol generating article is used.

[0006] The problems to be solved through the embodiments of the present disclosure are not limited to the problems described above, and problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the embodiments belong from this specification and the attached drawings.

[0007] An aerosol generating article according to one embodiment may include a front end through which an aerosol generated from a cartridge flows into the aerosol generating article, a medium portion located downstream of the front end and containing an aerosol generating material, a filter portion located downstream of the medium portion, a first wrapper surrounding the front end, the medium portion, and the filter portion, a second wrapper surrounding the first wrapper, and a reactive material located between the first wrapper and the second wrapper that chemically reacts with the liquefied aerosol during passage through the aerosol generating article and ignites it.

[0008] An aerosol generating system according to one embodiment comprises an aerosol generating device including an aerosol generating article and an article receiving portion for receiving the aerosol generating article, wherein the aerosol generating article comprises: a front end portion; a medium portion located downstream of the front end portion and containing a first aerosol generating substance; a filter portion located downstream of the medium portion; a first wrapper surrounding the front end portion, the medium portion and the filter portion; a second wrapper surrounding the first wrapper; and a reactive substance located between the first wrapper and the second wrapper and chemically reacting with the liquefied aerosol in the process of passing through the aerosol generating article to ignite; and the aerosol generating device comprises a body including a cartridge receiving portion and a cartridge received in the cartridge receiving portion, the cartridge including a storage tank in which a second aerosol generating substance in a liquid phase is stored, and an atomizer for heating the second aerosol generating substance to generate an aerosol, wherein the aerosol generated from the second aerosol generating substance can be discharged to the outside of the aerosol generating device after passing through the aerosol generating article.

[0009] Aerosol generating articles and aerosol generating systems according to various embodiments of the present disclosure can provide a sufficient and high-quality smoking sensation to a user through a single aerosol generating article.

[0010] Aerosol generating articles and aerosol generating systems according to various embodiments of the present disclosure can prevent a user from heating a single aerosol generating article more than twice.

[0011] The effects of the embodiments are not limited to the effects described above, and effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the embodiments belong from this specification and the attached drawings.

[0012] Figure 1 illustrates an aerosol generating system in one embodiment.

[0013] FIG. 2a illustrates an aerosol generating article according to one embodiment.

[0014] Figure 2b illustrates an aerosol generating article according to another embodiment.

[0015] Figures 2c to 2e are cross-sectional views taken longitudinally of the aerosol generating article of Figure 2b.

[0016] Figure 2f is a cross-sectional view of a medium portion according to one embodiment.

[0017] Figure 2g is a cross-sectional view of a medium portion according to another embodiment.

[0018] Figures 3 to 5 are exploded perspective views of the final wrapper of Figures 2a and 2b.

[0019] Figure 6 is an enlarged view showing area A of Figure 1.

[0020] Figure 7 is a flowchart for explaining a method of controlling power supplied to a heater using a color sensor.

[0021] Figure 8 is a block diagram of an aerosol generating device according to one embodiment.

[0022] The terms used in the embodiments are selected from widely used, common terms, taking into account the functions of the embodiments. However, these terms may vary depending on the intentions of engineers working in the field, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant invention. Therefore, the terms used in this disclosure should not be defined simply as names of terms, but rather based on the meanings of the terms and the overall content of the present invention.

[0023] When a part of the specification is said to "include" a component, this does not exclude other components, but rather implies the inclusion of other components, unless otherwise specifically stated. Furthermore, terms such as "-unit" and "-module" used in the specification refer to a unit that processes at least one function or operation, which may be implemented in hardware, software, or a combination of hardware and software.

[0024] As used herein, when an expression such as "at least one" precedes an array of elements, it modifies the entire array of elements, not just each individual element. For example, the expression "at least one of a, b, and c" should be interpreted to include a, b, c, or a and b, a and c, b and c, or a and b and c.

[0025] Terms containing ordinal numbers, such as "first" or "second," used herein may be used to describe various elements, but the elements are not limited by the terms. The terms are used for the purpose of distinguishing one element from another.

[0026] Throughout the specification, "tobacco material" may mean any form of material containing components derived from the tobacco plant. For example, the tobacco material may be tobacco grains or tobacco powder.

[0027] Additionally, throughout the specification, the "longitudinal direction" of a component may mean the direction in which the component extends along one directional axis of the component, wherein the one directional axis of the component may mean the direction in which the component extends longer than the other directional axis transverse to the one directional axis. The "longitudinal direction of the aerosol-generating article" means the direction in which the aerosol-generating article extends in length, or the direction in which combustion proceeds when the aerosol-generating article is combusted.

[0028] For example, in FIG. 1, the longitudinal direction of the aerosol generating article (100) may be the direction in which the front end (110), the medium portion (120), and the filter portion (130) extend. That is, it may mean the height direction of the tubular aerosol generating article (100).

[0029] Additionally, when a user inhales air using an aerosol-generating article, the portion where air enters from the outside of the aerosol-generating article to the inside may be referred to as "upstream," and the portion where air exits from the inside of the aerosol-generating article to the outside may be referred to as "downstream." The terms "upstream" and "downstream" may be used to indicate the relative position or direction between parts or segments that make up the aerosol-generating article.

[0030] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0031] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0032] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0033] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0034] Below, embodiments of the present disclosure are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein.

[0035] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components are given the same reference numbers and redundant descriptions thereof will be omitted.

[0036] FIG. 1 illustrates an aerosol generating system (300) according to one embodiment. Referring to FIG. 1, an aerosol generating system (300) according to one embodiment may include an aerosol generating article (100) and an aerosol generating device (200). In the present disclosure, an aerosol generating article may refer to an article used by a user to smoke. For example, the aerosol generating article may be a cigarette that is directly combusted by an aerosol generating device, a non-heated cigarette that is not heated, and / or a cigarette that can be heated at a low temperature.

[0037] The aerosol generating device (200) may include a main body (210) and a cartridge (230). The main body (210) may form the overall appearance of the aerosol generating device (200), and components of the aerosol generating device (200) may be arranged inside the main body (210). For example, a battery and / or a processor may be arranged inside the main body (210), but the components arranged inside are not limited thereto.

[0038] The main body (210) may include a cartridge receiving portion (220), and the cartridge receiving portion (220) may receive a cartridge (230). The cartridge (230) may be detachably coupled to the main body (210), but is not limited thereto. The cartridge (230) may be formed or assembled integrally with the main body (210), and may be fixed so as not to be detached by the user.

[0039] The cartridge (230) may include a storage tank (231) in which an aerosol generating substance is stored and an atomizer (232) for heating the aerosol generating substance. The cartridge (230) may be mounted on the main body (210) while the aerosol generating substance is stored inside the storage tank (231). However, the present invention is not limited thereto, and the aerosol generating substance may be injected into the inside of the storage tank (231) while the cartridge (230) is coupled to the main body (210).

[0040] The storage tank (231) can hold an aerosol-generating material in any one of a variety of states, such as a liquid state, a solid state, a gaseous state, or a gel state. The aerosol-generating material can include a liquid composition. For example, the liquid composition can be a liquid containing a tobacco-containing material including volatile tobacco flavoring components, or a liquid containing a non-tobacco material.

[0041] The aerosol-generating material may include water, solvent, ethanol, plant extracts, fragrances, flavoring agents, or vitamin mixtures. The flavoring agents may include, but are not limited to, menthol, peppermint, spearmint oil, and various fruit-flavored ingredients. The flavoring agents may include ingredients that provide a variety of flavors or tastes to the user. The vitamin mixture may include, but is not limited to, a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E. Additionally, the aerosol-generating material may include aerosol-forming agents such as glycerin and propylene glycol.

[0042] The atomizer (232) can generate an aerosol by heating an aerosol-generating substance. The atomizer (232) can include a heater and a wick. The aerosol can be generated by the heater heating the aerosol-generating substance that has come out of the storage tank (231) and permeated the wick. In the present disclosure, “aerosol” can mean a gas that is a mixture of vaporized particles generated from the aerosol-generating substance and air.

[0043] The cartridge (230) may further include an article receiving portion (233) for receiving an aerosol generating article (100). The aerosol generated from the cartridge (230) may be delivered to the aerosol generating article (100) received in the article receiving portion (233).

[0044] The cartridge (230) can be activated by an electric signal or wireless signal transmitted from the main body (210), and can perform a function of generating an aerosol by converting the phase of an aerosol generating material stored therein into a gas phase. The aerosol generated from the cartridge (230) can be introduced into the article receiving portion (233) and then transferred to the aerosol generating article (100).

[0045] The aerosol generating article (100) may include a front end (110), a medium portion (120), and a filter portion (130). For example, the front end (110), the medium portion (120), and the filter portion (130) of the aerosol generating article (100) may be sequentially arranged in the longitudinal direction of the aerosol generating article (100). However, the components of the aerosol generating article (100) are not limited to the components illustrated in FIG. 1, and it goes without saying that other general-purpose components may be further included in the aerosol generating article (100).

[0046] As the cartridge (230) is heated, an aerosol can be generated from an aerosol generating material stored in a storage tank (231). The aerosol generated from the cartridge (230) can sequentially pass through the front end (110), the medium portion (120), and the filter portion (130) of the aerosol generating article (100), and then be discharged to the outside of the aerosol generating device (200). A user can inhale the aerosol discharged through the aerosol generating article (100) by contacting one end (e.g., the filter portion (130)) of the aerosol generating article (100) with the mouthpiece.

[0047] The aerosol generating article (100) may further include a reactive substance that chemically reacts with the aerosol and ignites. When the aerosol generated from the cartridge (230) flows into the aerosol generating article (100) and is discharged outside the aerosol generating device (200), the aerosol and the reactive substance may come into contact with each other and cause an ignition reaction. Due to the ignition reaction between the aerosol and the reactive substance, a portion of the surface of the aerosol generating article (100) may be burned and blackened.

[0048] A user may determine that the aerosol generating article (100) has already been used by observing the soot marks formed on the surface of the aerosol generating article (100). Alternatively, the aerosol generating device (200) may further include a color sensor (400) for detecting discoloration of the surface of the aerosol generating article (100), and if the color sensor (400) determines that the surface of the aerosol generating article (100) inserted into the aerosol generating device (200) has discolored, the aerosol generating article (100) may not be heated. Specific details regarding this will be described later with reference to FIGS. 3 to 7.

[0049] The aerosol generating article (100) may be manufactured in a cylindrical shape. In one embodiment, when the aerosol generating article (100) is manufactured in a cylindrical shape, the diameter of the aerosol generating article (100) may be about 5 mm to about 9 mm.

[0050] The length of the aerosol generating article (100) may be from about 20 mm to about 60 mm. For example, the length of the front end (110) may be from about 5 mm to about 15 mm, the length of the medium portion (120) may be from about 10 mm to about 30 mm, and the length of the filter portion (130) may be from about 5 mm to about 15 mm.

[0051] However, the length and diameter of the aerosol generating article (100) and its constituent elements are not limited thereto and may be varied in various ways depending on the design. For example, in FIG. 1, when the aerosol generating article (100) is inserted into the aerosol generating device (200), only a portion of the front end (110), the medium portion (120), and the filter portion (130) is illustrated as being introduced into the interior of the aerosol generating device (200), but the present invention is not limited thereto. When the aerosol generating article (100) is inserted into the aerosol generating device (200), the front end (110) and the medium portion (120) are introduced into the interior of the aerosol generating device (200), and the entire filter portion (130) may be exposed to the exterior of the aerosol generating device (200).

[0052] The front end (110) can prevent the material contained in the medium (120) from escaping to the outside, and can prevent the aerosol generated from the medium (120) during smoking from flowing into the aerosol generating device (200).

[0053] Additionally, the front end (110) can introduce an external airflow into the interior of the aerosol generating article (100). The front end (110) can introduce an aerosol generated as the cartridge (230) is heated into the interior of the aerosol generating article (100) as an external airflow.

[0054] The shear portion (110) may include either an acetate filter formed from cellulose acetate tow or a paper filter formed from paper. The shear portion (110) may be manufactured by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. The hardness of the shear portion (110) may be adjusted by adjusting the content of the plasticizer.

[0055] At this time, when the front end (110) includes an acetate filter formed of cellulose acetate tow, the front end (110) may be manufactured to generate a flavor. For example, when the front end (110) includes an acetate filter, a flavoring liquid containing a flavoring substance may be sprayed onto the acetate filter, and a separate fiber coated with the flavoring liquid may be included inside the acetate filter. As another example, when the front end (110) includes an acetate filter, the acetate filter may include a capsule containing a flavoring substance.

[0056] The flavoring agent may include, but is not limited to, menthol. Additionally, the flavoring agent may include plant-based flavorings such as cinnamon, sage, herbs, chamomile, bergamot, cinnamon, jasmine, ginger, vanilla, spearmint, peppermint, acacia, coffee, celery, sandalwood, and cocoa. Alternatively, the flavoring agent may include animal-based flavorings such as musk, ambergris, civet, and castor oil.

[0057] The flavoring agent may be an alcohol compound such as geraniol, linalool, anethole, eugenol, etc., or an aldehyde compound such as vanillin, benzaldehyde, anisaldehyde, etc. Alternatively, the flavoring agent may be an ester compound such as isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate, etc.

[0058] The shear portion (110) may include at least one channel as needed, and the cross-sectional shape of the channel may be manufactured in various ways. For example, the shear portion (110) may be in the shape of a tube.

[0059] The medium portion (120) may be positioned downstream of the front end portion (110) and may include an aerosol generating material. The medium portion (120) may further include a tobacco medium comprising a granular tobacco material. The tobacco material may include various types of tobacco powder.

[0060] Tobacco powder may be tobacco leaf fragments, tobacco stems, and / or tobacco fines generated during tobacco processing. Tobacco powder may include ground tobacco leaves, ground reconstituted tobacco, etc. Tobacco powder may include at least one of the following types: Flue, Burley, Hwa-dried, Yang-dried, and Yin-dried.

[0061] By applying a pH adjusting solution to the granules, the pH of the tobacco material contained in the granules can be adjusted to an alkaline level. By adjusting the pH of the tobacco material to an alkaline level, the aerosol generating article (100) can deliver a sufficient amount of nicotine at a low temperature even without being directly heated by a separate heating element. The pH adjusting agent may include, but is not limited to, at least one of potassium carbonate (K2CO3), sodium bicarbonate (NaHCO3), and mixtures thereof.

[0062] The medium (120) may include at least one of an acetate filter formed of cellulose acetate tow and a paper filter formed of paper.

[0063] For example, when the medium portion (120) includes at least one of an acetate filter and a paper filter, the tobacco medium described above may be filled inside the filter. At this time, the tobacco medium may be filled inside the filter in an amount of about 2 mg / mm to about 8 mg / mm. As another example, the tobacco medium may be filled inside the filter in an amount of about 4 mg / mm to about 6 mg / mm.

[0064] When the pH of the tobacco medium included in the medium portion (120) is adjusted toward the alkaline side using a pH adjuster, the amount of nicotine released from the tobacco medium at low temperatures can increase. Accordingly, when the medium portion (120) is manufactured in such a way that the pH-adjusted tobacco medium is filled with at least one of an acetate filter and a paper filter, the acetate filter or the paper filter can maintain the nicotine released from the tobacco material in an absorbed state, thereby preventing the released nicotine from being released to the outside of the aerosol generating article (100). A detailed description thereof will be described later with reference to FIGS. 4 and 5.

[0065] The filter unit (130) may be positioned at a position facing the front end unit (110) with the medium unit (120) as the center. The filter unit (130) is positioned downstream of the medium unit (120) and can filter at least one of the substances included in the mainstream smoke including the aerosol generated from the medium unit (120).

[0066] The filter unit (130) may be implemented in various shapes. For example, the filter unit (130) may be a cylindrical rod, or a tubular rod including a hollow portion inside. Alternatively, the filter unit (130) may be a recessed rod.

[0067] The filter unit (130) may include one of an acetate filter formed of cellulose acetate tow and a paper filter formed of paper. In this case, when the filter unit (130) includes an acetate filter formed of cellulose acetate tow, the filter unit (130) may be manufactured to generate a flavor.

[0068] When the filter unit (130) includes an acetate filter, a flavoring agent containing a flavoring substance may be sprayed onto the acetate filter, and a separate fiber coated with the flavoring agent may be included inside the acetate filter. When the filter unit (130) includes an acetate filter, the acetate filter may also include a capsule containing a flavoring substance.

[0069] The flavoring material that can be included in the filter section (130) may be the same as or similar to the flavoring material that can be included in the aforementioned front section (110).

[0070] For example, if the front end (110) includes a capsule containing a flavoring substance or includes fibers coated with a flavoring liquid containing a flavoring substance, the filter unit (130) may not include a flavoring substance. That is, if the front end (110) includes a flavoring substance, the filter unit (130) may include a recessed rod formed of cellulose acetate tow or a tube formed of paper.

[0071] For another example, if the filter unit (130) includes a capsule containing a flavoring substance or includes fibers coated with a flavoring liquid containing a flavoring substance, the front end (110) may not include a flavoring substance. That is, if the filter unit (130) includes a flavoring substance, the front end (110) may include an acetate filter formed of cellulose acetate tow or a tube formed of paper.

[0072] Hereinafter, the aerosol generating article (100) will be described in more detail with reference to FIGS. 2a and 2b.

[0073] FIG. 2A illustrates an aerosol generating article (100) according to one embodiment. Referring to FIG. 2A, the aerosol generating article (100) sequentially includes a front end (110), a medium portion (120), and a filter portion (130).

[0074] The length of the aerosol generating article (100) according to one embodiment may be from about 20 mm to about 60 mm. For example, the length of the front end (110) may be from about 5 mm to about 15 mm, the length of the medium portion (120) may be from about 10 mm to about 30 mm, and the length of the filter portion (130) may be from about 5 mm to about 15 mm.

[0075] The aerosol-generating article (100) may be wrapped by a single wrapper (150). However, the present invention is not limited thereto, and the aerosol-generating article (100) may be wrapped by a plurality of wrappers (150) in an overlapping manner. For example, the front end (110) may be wrapped by the front end wrapper (151), the medium part (120) may be wrapped by the medium part wrapper (152), and the filter part (130) may be wrapped by the filter part wrapper (153). In addition, the entire aerosol-generating article (100) may be repackaged by a single final wrapper (155).

[0076] The front-end wrapper (151), the medium wrapper (152), and the filter wrapper (153) can be made of general filter paper. For example, the front-end wrapper (151), the medium wrapper (152), and the filter wrapper (153) can be porous paper or non-porous paper. In addition, the front-end wrapper (151), the medium wrapper (152), and the filter wrapper (153) can be made of oil-resistant paper and / or aluminum composite packaging material.

[0077] Additionally, the filter unit wrapper (153) may be manufactured from a hard paper having oil resistance. For example, if the filter unit (130) includes a capsule (131), it may be manufactured from a hard paper having oil resistance.

[0078] According to one embodiment, the filter unit (130) may include at least one capsule (131). Here, the capsule (131) may perform a function of generating a flavor or a function of generating an aerosol. For example, the capsule (131) may have a structure in which a liquid containing a flavor is wrapped with a film. The capsule (131) may have a spherical or cylindrical shape, but is not limited thereto.

[0079] The final wrapper (155) can be made of sterilized paper (MFW). Here, sterilized paper (MFW) refers to paper specially manufactured to have improved tensile strength, water resistance, smoothness, etc. compared to regular paper.

[0080] A predetermined material may be added to the final wrapper (155). Here, an example of the predetermined material may be silicone, but is not limited thereto. For example, silicone has properties such as heat resistance with little change depending on temperature, oxidation resistance without oxidation, resistance to various chemicals, water repellency, and electrical insulation. However, even if it is not silicone, any material having the aforementioned properties may be applied (or coated) to the final wrapper (155) without limitation.

[0081] The final wrapper (155) can prevent the aerosol generating device (200) from being contaminated by substances generated from the aerosol generating article (100). For example, liquid substances may be generated within the aerosol generating article (100) by a user's puff. For example, liquid substances (e.g., moisture, etc.) may be generated by cooling the aerosol generated from the aerosol generating article (100) by external air. As the final wrapper (155) wraps the aerosol generating article (100), liquid substances generated within the aerosol generating article (100) can be prevented from leaking out of the aerosol generating article (100).

[0082] Meanwhile, although not shown, the wrapper (150) may have at least one hole formed through which outside air is introduced or inside gas is discharged.

[0083] The filter unit (130) may include a single segment, but is not limited thereto. The filter unit (130) may further include a segment performing a cooling function, and may be composed of multiple segments. If necessary, the filter unit (130) may further include at least one segment performing another function.

[0084] FIG. 2b illustrates an aerosol generating article (100) according to another embodiment. The aerosol generating article (100) of FIG. 2b may differ from the aerosol generating article (100) of FIG. 2a only in that a second filter portion (140) and a second filter portion wrapper (154) are added, and any redundant description thereof will be omitted below.

[0085] The second filter unit (140) may be in the form of a paper tube or a tube made of cellulose acetate. The second filter unit (140) may be manufactured to generate a flavor. For example, a flavoring agent may be sprayed onto the tube or tube forming the second filter unit (140), or a separate fiber coated with a flavoring agent may be inserted into the interior of the second filter unit (140).

[0086] The second filter unit (140) may be wrapped by a second filter unit wrapper (154). Alternatively, a separate wrapper surrounding the second filter unit (140) may not be provided. In this case, the second filter unit (140) may be wrapped only by the final wrapper (155) together with the front end (110), the medium unit (120), and the filter unit (130).

[0087] Hereinafter, the internal configuration of the aerosol generating article (100) of FIG. 2b will be described in more detail with reference to FIGS. 2c to 2e.

[0088] Figures 2c to 2e are cross-sectional views taken longitudinally of the aerosol generating article (100) of Figure 2b.

[0089] Referring to FIG. 2c, the aerosol generating article (100) may sequentially include a front end (110), a medium portion (120), a second filter portion (140), and a filter portion (130). Here, the medium portion (120) may include a tobacco medium (121), and the second filter portion (140) may include a flavoring element (141) including a flavoring liquid. In addition, the filter portion (130) may include a capsule (131).

[0090] As the cartridge (e.g., cartridge (230) of FIG. 1) is heated, the aerosol generated from the cartridge can be introduced into the interior of the aerosol generating article (100) through the front end (110), and then sequentially transferred through the medium portion (120), the second filter portion (140), and the filter portion (130).

[0091] That is, the aerosol introduced through the front end (110) can be sequentially transferred to the second filter unit (140) and the filter unit (130) after being mixed with components such as nicotine released from the tobacco medium (121) of the medium unit (120). At this time, the flavoring element (141) included in the second filter unit (140) can be mixed together and delivered to the user.

[0092] The medium portion (120) may be filled with a tobacco medium (121) in a cellulose acetate filter (122), but is not limited thereto. The medium portion (120) may also be manufactured by filling a paper filter with a tobacco medium (121).

[0093] Referring to FIG. 2d, the aerosol generating article (100) may sequentially include a front end (110), a second filter portion (140), a medium portion (120), and a filter portion (130).

[0094] As the cartridge (e.g., cartridge (230) of FIG. 1) is heated, the aerosol generated from the cartridge can be introduced into the interior of the aerosol generating article (100) through the front end (110), and then sequentially transferred through the second filter unit (140), the medium unit (120), and the filter unit (130).

[0095] That is, the aerosol introduced through the front end (110) is mixed with the flavoring element (141) included in the second filter unit (140) and delivered to the medium unit (120), then mixed with components such as nicotine released from the tobacco medium (121) of the medium unit (120), and then delivered to the user through the second filter unit (140).

[0096] Referring to FIG. 2e, the aerosol generating article (100) may sequentially include a front end (110), a first medium portion (120a), a second medium portion (120b), and a filter portion (130).

[0097] As the cartridge (e.g., cartridge (230) of FIG. 1) is heated, the aerosol generated from the cartridge can be introduced through the front end (110) and then sequentially transferred through the first medium section (120a), the second medium section (120b), and the filter section (130).

[0098] The medium portion (120) may include a first medium portion (120a) and a second medium portion (120b) composed of separate segments. The first medium portion (120a) and the second medium portion (120b) may each include a tobacco medium (121).

[0099] The first medium portion (120a) and the second medium portion (120b) can be manufactured by filling a tobacco medium (121) into a cellulose acetate filter (122), respectively. However, this is merely an example and is not limited thereto. The first medium portion (120a) can be manufactured by filling a tobacco medium (121) into an acetate filter, and the second medium portion (120b) can be manufactured by filling a tobacco medium (121) into a paper filter. Alternatively, the first medium portion (120a) may be manufactured by filling a paper filter with a tobacco medium (121), the second medium portion (120b) may be manufactured by filling an acetate filter with a tobacco medium (121), and the first medium portion (120a) and the second medium portion (120b) may each be manufactured by filling a paper filter with a tobacco medium (121).

[0100] Hereinafter, the internal configuration of the medium section (120) will be described in more detail with reference to FIGS. 2f and 2e.

[0101] FIG. 2f is a cross-sectional view of a medium portion (120) according to one embodiment. Referring to FIG. 2f, the medium portion (120) of an aerosol generating article (e.g., the aerosol generating article (100) of FIGS. 1 and 2a to 2e) may include a cellulose acetate filter (122) and a tobacco medium (121) filled in the cellulose acetate filter (122). The cellulose acetate filter (122) may be formed of a plurality of cellulose acetate tows (122a), and the tobacco medium (121) may be filled between the plurality of cellulose acetate tows (122a).

[0102] The tobacco medium (121) of the medium portion (120) may be filled with about 2 mg / mm to about 8 mg / mm inside a cellulose acetate filter (122). Alternatively, the tobacco medium (121) of the medium portion (120) may be filled with about 4 mg / mm to 6 mg / mm inside a cellulose acetate filter (122).

[0103] For example, if the medium portion (120) includes only one segment including a tobacco medium (121), such as the medium portion (120) of FIGS. 2c and 2d, and the length of the segment including the tobacco medium (121) is about 5 mm to about 15 mm, the medium portion (120) can be filled with about 20 mg to about 90 mg of the tobacco medium (121).

[0104] For another example, when the medium portion (120) includes two segments including a tobacco medium (121), such as the medium portion (120) of FIG. 2e, and the lengths of the two segments are from about 10 mm to about 30 mm, the medium portion (120) may be filled with about 40 mg to 180 mg of the tobacco medium (121). Furthermore, when the medium portion (120) includes one segment including a tobacco medium (121), such as the medium portion (120) of FIG. 2a, and the length of the one segment is from about 10 mm to 30 mm, the medium portion (120) may be filled with about 40 mg to 180 mg of the tobacco medium (121).

[0105] The cellulose acetate filter (122) may be composed of a plurality of cellulose acetate tows (122a) having a mono denier of 9.0, a total denier of 25,000, and a cross-section having a Y shape, but is not limited thereto.

[0106] In one embodiment, the tobacco medium (121) may be coated by spraying a pH aqueous solution onto granules, and the diameter of the tobacco medium (121) may be about 0.1 mm to about 1.2 mm. In another embodiment, the diameter of the tobacco medium (121) may be about 0.3 mm to about 0.6 mm. When the diameter of the tobacco medium (121) is within the range of about 0.1 mm to about 1.2 mm, or within the range of about 0.3 mm to about 0.6 mm, the manufacturing ease of the medium portion (120) may increase.

[0107] That is, when a plurality of cellulose acetate tows (122a) are combined to manufacture a medium (120) and a cellulose acetate filter (122) is manufactured, and at the same time, a tobacco medium (121) is filled into the cellulose acetate filter (122), the diameter of the tobacco medium (121) must be within a range of about 0.1 mm to about 1.2 mm, or within a range of about 0.3 mm to about 0.6 mm, so that it can be stably filled into the cellulose acetate filter (122).

[0108] As described above, the pH of the tobacco medium (121) can be adjusted to an alkaline side through the pH adjuster, and accordingly, the tobacco medium (121) can release nicotine even at a relatively low temperature at which the aerosol generating article (100) is not directly heated. For example, as the aerosol generated by heating the cartridge (e.g., the cartridge (230) of FIG. 1) is transferred to the aerosol generating article (100), nicotine can be released from the tobacco medium (121) of the medium portion (120).

[0109] At this time, as nicotine released from the tobacco medium (121) is absorbed by the cellulose acetate filter (122) (or, as nicotine release from the tobacco medium (121) is suppressed by the cellulose acetate filter (122), the nicotine storage capacity of the aerosol generating article (e.g., the aerosol generating article (100) of FIGS. 1 and 2A to 2E) can be improved.

[0110] FIG. 2g is a cross-sectional view of a medium portion (120) according to another embodiment. Referring to FIG. 2g, the medium portion (120) of an aerosol generating article (e.g., the aerosol generating article (100) of FIGS. 1 and 2a to 2e) may include a paper filter (123) and a tobacco medium (121) filled in the paper filter (123). The paper filter (123) may be manufactured so that the paper has a rolled form, i.e., a rolled form, and the tobacco medium (121) may be filled between the rolled paper and the layers of the paper.

[0111] The tobacco medium (121) of the medium portion (120) may be filled in an amount of about 2 mg / mm to about 8 mg / mm inside the paper filter (123). Alternatively, the medium portion (120) may be filled in an amount of about 4 mg / mm to 6 mg / mm inside the paper filter (123).

[0112] For example, the paper filter (123) may be manufactured in the form of rolled paper having a smooth surface. However, the present invention is not limited thereto, and for another example, the paper filter (123) may be manufactured in the form of rolled paper having a surface roughness greater than a certain value or crimped paper.

[0113] The paper filter (123) can be manufactured in the form of a rolled piece of paper having a horizontal length of about 5 mm to about 15 mm and a vertical length of about 100 mm to about 150 mm. However, the present invention is not limited thereto, and the size of the paper may vary depending on the manufacturer's design.

[0114] When manufacturing the medium (120), when manufacturing the paper filter (123) in the form of rolled paper and at the same time filling the tobacco medium (121) into the paper filter (123), the diameter of the tobacco medium (121) must be within the range of about 0.1 mm to about 1.2 mm, or within the range of about 0.3 mm to about 0.6 mm, so that it can be stably filled into the paper filter (123).

[0115] As described above, the pH of the tobacco medium (121) can be adjusted to an alkaline side through the pH adjuster, and accordingly, the tobacco medium (121) can release nicotine even at a relatively low temperature at which the aerosol generating article (100) is not directly heated. For example, as the aerosol generated by heating the cartridge (e.g., the cartridge (230) of FIG. 1) is transferred to the aerosol generating article (100), nicotine can be released from the tobacco medium (121) of the medium portion (120).

[0116] At this time, as nicotine released from the tobacco medium (121) is absorbed by the cellulose acetate filter (122) (or, as nicotine release from the tobacco medium (121) is suppressed by the cellulose acetate filter (122), the nicotine storage capacity of the aerosol generating article (e.g., the aerosol generating article (100) of FIGS. 1 and 2A to 2E) can be improved.

[0117] FIGS. 3 to 5 are exploded perspective views of the final wrapper (155) of FIGS. 2a and 2b. At this time, FIGS. 3 to 5 show the final wrapper (155) in an unfolded state, and the final wrapper (155) of FIG. 3 may be an example of the final wrapper (155) of FIGS. 2a and 2b.

[0118] Referring to FIGS. 3 to 5, the final wrapper (155) according to one embodiment may include a first wrapper (156) and a second wrapper (157).

[0119] The first wrapper (156) can surround the front end (110), the medium part (120), and the filter part (130) as illustrated in FIG. 2A. Each of the front end (110), the medium part (120), and the filter part (130) can be surrounded by the front end wrapper (151), the medium part wrapper (152), and the filter part wrapper (153). The first wrapper (156) can surround the front end wrapper (151), the medium part wrapper (152), and the filter part wrapper (153) as a final wrapper (155), and the second wrapper (157) can further surround the first wrapper (156).

[0120] The first wrapper (156) can surround the front end (110), the medium part (120), the filter part (130), and the second filter part (140) as illustrated in FIG. 2B. Each of the front end (110), the medium part (120), the filter part (130), and the second filter part (140) can be surrounded by the front end wrapper (151), the medium part wrapper (152), the filter part wrapper (153), and the second filter part wrapper (154). The first wrapper (156) can surround the front end wrapper (151), the medium part wrapper (152), the filter part wrapper (153), and the second filter part wrapper (154) as a final wrapper (155), and the second wrapper (157) can further surround the first wrapper (156).

[0121] Referring to FIG. 3, a reactive material (101) may be placed between the first wrapper (156) and the second wrapper (157). For example, the reactive material (101) may be applied between the first wrapper (156) and the second wrapper (157) in the form of particles. However, the present invention is not limited thereto, and the reactive material (101) may be applied by spraying the first wrapper (156) and / or the second wrapper (157) in the form of a solution and drying it.

[0122] The reactive material (101) may be a material that chemically reacts with the aerosol (201) and ignites. The aerosol (201) generated as the cartridge (e.g., the cartridge (230) of FIG. 1) is heated may pass through the aerosol generating article (e.g., the aerosol generating article (100) of FIGS. 1 and 2A to 2E), and as shown in FIG. 4, the liquefied aerosol (201) may permeate the first wrapper (156) and / or the second wrapper (157) during this process. The reactive material (101) may react with the aerosol (201) permeating the first wrapper (156) and / or the second wrapper (157) and ignite.

[0123] For example, the reactive material (101) may include potassium permanganate, and the aerosol (201) may include glycerin. Potassium permanganate can cause an ignition reaction when it comes into contact with glycerin. However, the reactive material (101) and / or the aerosol (201) used for the ignition reaction are not limited thereto, and any material that can cause an ignition reaction within a range that can ensure the safety of the user may be used without limitation.

[0124] The first wrapper (156) and / or the second wrapper (157) may be combusted by the ignition reaction of the reactant (101) and the aerosol (201), and thus, the first wrapper (156) and / or the second wrapper (157) may be discolored. For example, referring to FIG. 5, as the first wrapper (156) and / or the second wrapper (157) is combusted by the ignition reaction, a blackened soot mark (301) may be formed on at least one area of ​​the first wrapper (156) and / or the second wrapper (157).

[0125] In FIGS. 3 to 5, the reactive material (101) is applied to the entire area between the first wrapper (156) and the second wrapper (157), but this is only one embodiment, and the reactive material (101) may be applied only to a specific area between the first wrapper (156) and the second wrapper (157).

[0126] In FIGS. 3 to 5, only the reaction material (101) is applied to a position corresponding to the entire area of ​​the aerosol generating article (100) between the first wrapper (156) and the second wrapper (157), but this is only one embodiment.

[0127] The reactive material (101) may also be applied to a location corresponding to a local area of ​​the aerosol generating article (100) between the first wrapper (156) and the second wrapper (157). For example, the reactive material (101) may be applied to a location corresponding to an upstream portion of the medium portion (120) or the filter portion (130) between the first wrapper (156) and the second wrapper (157). In the present disclosure, the “upstream portion of the filter portion (130)” may mean a region where the aerosol generating article (100) is introduced into the interior of the aerosol generating device (200) when the aerosol generating device (100) is accommodated in the aerosol generating device (e.g., the aerosol generating device (200) of FIG. 1).

[0128] When an aerosol generating article (100) is used in which a reaction material (101) is applied between the first wrapper (156) and the second wrapper (157) at a position corresponding to the medium portion (120), a blackened mark (301) may be formed in an area corresponding to the medium portion (120) among the entire area of ​​the second wrapper (157).

[0129] Alternatively, when an aerosol generating article (100) is used in which the reaction material (101) is applied between the first wrapper (156) and the second wrapper (157) at a position corresponding to the upstream portion of the filter section (130), a blackened mark (301) may be formed in an area corresponding to the upstream portion of the filter section (130) among the entire area of ​​the second wrapper (157).

[0130] Hereinafter, with reference to FIG. 6, a color sensor (e.g., color sensor (400) of FIG. 1) for detecting whether the second wrapper (157) has been discolored by the ignition reaction of the reaction material (101) and the aerosol (201) will be described.

[0131] FIG. 6 is an enlarged view illustrating area A of FIG. 1. The components of the aerosol generation system illustrated in FIG. 6 may be identical or similar to at least one of the components of the aerosol generation system (300) of FIG. 1, and any redundant description will be omitted below.

[0132] Referring to FIG. 6, an aerosol generating system according to one embodiment (e.g., the aerosol generating system (300) of FIG. 1) may include a medium portion (120), a filter portion (130), a final wrapper (155), and a color sensor (400). The final wrapper (155) may include a first wrapper (156) and a second wrapper (157), and a reactive material (101) may be placed between the first wrapper (156) and the second wrapper (157).

[0133] As illustrated in FIG. 6, the reaction material (101) can be applied in the form of particles at a position corresponding to the upstream portion of the medium section (120) and the filter section (130) between the first wrapper (156) and the second wrapper (157).

[0134] The color sensor (400) is positioned adjacent to the article receiving portion (223), and may be positioned at a position corresponding to the reaction material (101) when an aerosol generating article (e.g., the aerosol generating article (100) of FIG. 1) is received in the article receiving portion (223). That is, the color sensor (400) may be positioned to face at least a portion of the reaction material (101) when the aerosol generating article (e.g., the aerosol generating article (100) of FIG. 1) is received in the article receiving portion (223).

[0135] For example, the color sensor (400) may be positioned to face a portion of the reaction material (101) when the aerosol generating article (e.g., the aerosol generating article (100) of FIG. 1) is accommodated in the article receiving portion (223). Accordingly, the color sensor (400) may be positioned at a position corresponding to the upstream portion of the medium portion (120) or the filter portion (130).

[0136] However, the position where the color sensor (400) is placed is not limited to this, and the position of the color sensor (400) may be appropriately changed depending on the performance of the color sensor (400) or the design method of the aerosol generation system (e.g., the aerosol generation system (300) of FIG. 1).

[0137] The color sensor (400) can detect the color of the second wrapper (157). An aerosol generating device (e.g., the aerosol generating device (200) of FIG. 1) can detect whether the second wrapper (157) has discolored using the color sensor (400).

[0138] The aerosol generated from the cartridge (e.g., cartridge (230) of FIG. 1) can pass through the aerosol generating article and then be discharged to the outside of the aerosol generating device (e.g., aerosol generating device (200) of FIG. 1). The user can inhale the discharged aerosol by contacting one end of the filter portion (130) with the opening. During this process, the aerosol may permeate the first wrapper (156) and / or the second wrapper (157) and may come into contact with the reactive material (101) to cause an ignition reaction. The ignition reaction between the aerosol and the reactive material (101) may cause the first wrapper (156) and / or the second wrapper (157) to combust, thereby forming black soot marks (e.g., black soot marks (301) of FIG. 5) on the second wrapper (157).

[0139] The color sensor (400) can detect the color of at least one area of ​​the second wrapper (157) when an aerosol generating article (e.g., the aerosol generating article (100) of FIG. 1) is received in the article receiving portion (223). The aerosol generating device (e.g., the aerosol generating device (200) of FIG. 1) can detect whether the second wrapper (157) has discolored based on the result detected by the color sensor (400).

[0140] Hereinafter, with reference to FIG. 7, a method for controlling the operation of an aerosol generating device (e.g., the aerosol generating device (200) of FIG. 1) using the detection result of a color sensor (400) will be described.

[0141] FIG. 7 is a flowchart for explaining a method for controlling power supplied to a heater using a color sensor (400). Referring to FIG. 7, the method for controlling power supplied to a heater using a color sensor (400) is composed of steps processed in the aerosol generating system (300) described in FIGS. 1 and 6. Accordingly, the contents described above with respect to the aerosol generating device (200) described in FIGS. 1 and 6 and the aerosol generating article (100) described in FIGS. 1, 2A to 2E and 3 to 5 can also be applied to the method for controlling power supplied to a heater using the color sensor (400) of FIG. 7.

[0142] A method of controlling power supplied to a heater using a color sensor (400) may be initiated at step 710 when an aerosol generating article (100) is inserted into an article receiving portion (223).

[0143] In step 720, the aerosol generating device (200) can detect the color of the final wrapper (155) using the color sensor (400). Specifically, the aerosol generating device (200) can detect the color of the second wrapper (157) using the color sensor (400).

[0144] If the aerosol generating article (100) contained in the article receiving portion (223) has already been used, a blackened soot mark (301) may be formed on the second wrapper (157). As the cartridge (230) storing the aerosol generating material is heated, an aerosol may be generated from the cartridge (230), and the generated aerosol (201) may come into contact with the reactive material (101) disposed between the first wrapper (156) and the second wrapper (157) while passing through the aerosol generating article (100). Due to the ignition reaction of the aerosol (201) and the reactant (101), some areas of the first wrapper (156) and / or the second wrapper (157) may be burned, and accordingly, black soot marks (301) may be formed in some areas of the first wrapper (156) and / or the second wrapper (157).

[0145] The color sensor (400) is positioned adjacent to the article receiving portion (223) and can detect the color of the second wrapper (157) of the aerosol generating article (100) inserted into the article receiving portion (223). The color sensor (400) can be positioned to face at least a portion of the reaction material (101) while the aerosol generating article (100) is received in the article receiving portion (223).

[0146] For example, when the reaction material (101) is placed at a position corresponding to the upstream portion of the medium portion (120) and the filter portion (130), the color sensor (400) may also be placed at a position corresponding to the upstream portion of the medium portion (120) and / or the filter portion (130).

[0147] In step 730, the aerosol generating device (200) can detect whether the color of the second wrapper (157) has changed based on the result detected in step 720.

[0148] In the case of a used aerosol generating article (100), blackened marks (301) may be formed in some areas of the second wrapper (157). In the case of an unused aerosol generating article (100), blackened marks (301) will not be formed in any areas of the second wrapper (157). That is, the color of the second wrapper (157) may change as the aerosol generating article (100) is used.

[0149] The aerosol generating device (200) can determine whether the second wrapper (157) of the aerosol generating article (100) accommodated in the article receiving section (223) has discolored by detecting whether there is a blackened mark (301) on the second wrapper (157) using a color sensor (400).

[0150] If the aerosol generating device (200) determines that there is no discoloration of the second wrapper / (157) of the aerosol generating article (100) accommodated in the article receiving section (223), power can be supplied to the heater of the atomizing section (232) following step 740.

[0151] On the other hand, if the aerosol generating device (200) determines that there is discoloration of the second wrapper (157) of the aerosol generating article (100) accommodated in the article receiving portion (223), the power supply to the heater of the atomizing portion (232) can be cut off according to step 750. The aerosol generating article (100) according to the present disclosure can cause the second wrapper (157) to discolor when the aerosol generating article (100) is used by including a reactive material (101), and the aerosol generating device (200) according to the present disclosure can prevent the already used aerosol generating article (100) from being reused by detecting the discoloration of the second wrapper (157) using a color sensor (400).

[0152] Figure 8 is a block diagram of an aerosol generating device (200) according to one embodiment.

[0153] The aerosol generating device (1) may include a battery (12), a control unit (13), a sensor unit (14), an output unit (40), an input unit (70), a communication unit (50), a memory (60), and at least one heater (15). However, the internal structure of the aerosol generating device (1) is not limited to that illustrated in Fig. 8. That is, a person having ordinary skill in the art related to the present embodiment will understand that, depending on the design of the aerosol generating device (1), some of the components illustrated in Fig. 8 may be omitted or new components may be added.

[0154] The sensor unit (14) can detect the status of the aerosol generating device (1) or the status of the surroundings of the aerosol generating device (1) and transmit the detected information to the control unit (13). Based on the detected information, the control unit (13) can control the aerosol generating device (1) so that various functions such as controlling the operation of the cartridge heater (15) and / or the stick heater (15), restricting smoking, determining whether a stick and / or cartridge (19) is inserted, and displaying a notification are performed.

[0155] The sensor unit (14) may include at least one of a temperature sensor (141), a puff sensor (142), an insertion detection sensor (143), a reuse detection sensor (144), a cartridge detection sensor (145), a cap detection sensor (146), and a movement detection sensor (147).

[0156] The temperature sensor (141) can detect the temperature at which the heater (15) is heated. The aerosol generating device (1) may include a separate temperature sensor that detects the temperature of the heater (15), or the heater (15) itself may function as a temperature sensor.

[0157] The temperature sensor (141) can output a signal corresponding to the temperature of the heater (15). For example, the temperature sensor (141) can include a resistance element whose resistance value changes in response to a change in the temperature of the heater (15). It can be implemented by a thermistor, which is an element that utilizes the property of changing resistance depending on temperature. At this time, the temperature sensor (141) can output a signal corresponding to the resistance value of the resistance element as a signal corresponding to the temperature of the heater (15). For example, the temperature sensor (141) can be configured as a sensor that detects the resistance value of the heater (15). At this time, the temperature sensor (141) can output a signal corresponding to the resistance value of the heater (15) as a signal corresponding to the temperature of the heater (15).

[0158] A temperature sensor (141) may be placed around the battery (12) to monitor the temperature of the battery (12). The temperature sensor (141) may be placed adjacent to the battery (12). For example, the temperature sensor (141) may be attached to one surface of the battery (12). For example, the temperature sensor (141) may be mounted on one surface of a printed circuit board.

[0159] A temperature sensor (141) is placed inside the main body (10) and can detect the internal temperature of the main body (10).

[0160] The puff sensor (142) can detect the user's puff based on various physical changes in the airflow path. The puff sensor (142) can output a signal corresponding to the puff. For example, the puff sensor (142) can be a pressure sensor. The puff sensor (142) can output a signal corresponding to the internal pressure of the aerosol generating device. Here, the internal pressure of the aerosol generating device (1) can correspond to the pressure of the airflow path through which the gas flows. The puff sensor (142) can be arranged in correspondence to the airflow path through which the gas flows in the aerosol generating device (1).

[0161] The insertion detection sensor (143) can detect the insertion and / or removal of an aerosol-generating article. The insertion detection sensor (143) can detect a signal change according to the insertion and / or removal of the aerosol-generating article. The insertion detection sensor (143) can be installed around the insertion space. The insertion detection sensor (143) can detect the insertion and / or removal of the aerosol-generating article according to a change in the permittivity within the insertion space. For example, the insertion detection sensor (143) can be an inductive sensor and / or a capacitance sensor.

[0162] An inductive sensor may include at least one coil. The coil of the inductive sensor may be positioned adjacent to the insertion space. For example, when a magnetic field changes around a current-carrying coil, the characteristics of the current flowing in the coil may change according to Faraday's law of electromagnetic induction. Here, the characteristics of the current flowing in the coil may include the frequency of the alternating current, the current value, the voltage value, the inductance value, the impedance value, etc.

[0163] An inductive sensor can output a signal corresponding to the characteristics of the current flowing through the coil. For example, an inductive sensor can output a signal corresponding to the inductance value of the coil.

[0164] A capacitance sensor may include a conductor. The conductor of the capacitance sensor may be positioned adjacent to the insertion space. The capacitance sensor may output a signal corresponding to the electromagnetic properties of the surroundings, such as the electrostatic capacitance around the conductor. For example, when an aerosol-generating article including a metallic wrapper is inserted into the insertion space, the electromagnetic properties around the conductor may be changed by the wrapper of the aerosol-generating article.

[0165] A reuse detection sensor (144) can detect whether an aerosol-generating article has been reused. The reuse detection sensor (144) may be a color sensor. The color sensor can detect the color of the aerosol-generating article. The color sensor can detect the color of a portion of a wrapper that wraps the outside of the aerosol-generating article. The color sensor can detect a value for an optical characteristic corresponding to the color of an object based on light reflected from the object. For example, the optical characteristic may be a wavelength of light. The color sensor may be implemented as a single component with the proximity sensor, or may be implemented as a separate component distinct from the proximity sensor.

[0166] At least some of the wrappers constituting the aerosol-generating article may change color due to the aerosol. The reuse detection sensor (144) may be positioned in response to a position where at least some of the wrappers that change color due to the aerosol are disposed when the aerosol-generating article is inserted into the insertion space. For example, before the aerosol-generating article is used by a user, the color of at least some of the wrappers may be a first color. At this time, as at least some of the wrappers are wetted by the aerosol generated by the aerosol generating device (1) while passing through the aerosol-generating article, the color of at least some of the wrappers may change to a second color. Meanwhile, the color of at least some of the wrappers may be maintained at the second color after changing from the first color to the second color.

[0167] The cap detection sensor (146) can detect the attachment and / or removal of the cap. When the cap is separated from the main body (10), the cartridge (19) and a portion of the main body (10) covered by the cap may be exposed to the outside. The cap detection sensor (146) can be implemented by a contact sensor, a hall sensor (hall IC), an optical sensor, or the like.

[0168] A motion detection sensor (147) can detect the movement of the aerosol generating device. The motion detection sensor (147) can be implemented with at least one of an acceleration sensor and a gyro sensor.

[0169] In addition to the sensors (141 to 147) described above, the sensor unit (14) may further include at least one of a humidity sensor, a pressure sensor, a magnetic sensor, a position sensor (GPS), and a proximity sensor. Since the functions of each sensor can be intuitively inferred by a person skilled in the art from its name, a detailed description thereof may be omitted.

[0170] The output unit (40) can output information on the status of the aerosol generating device (1) and provide it to the user. The output unit (40) may include at least one of a display unit (41), a haptic unit (42), and an audio output unit (43), but is not limited thereto. When the display unit (41) and the touch pad form a layered structure to form a touch screen, the display unit (41) can be used as an input device in addition to an output device.

[0171] The display unit (41) can visually provide information about the aerosol generating device (1) to the user. For example, the information about the aerosol generating device (1) can mean various information such as the charging / discharging status of the battery (12) of the aerosol generating device (1), the preheating status of the heater (15), the insertion / removal status of the aerosol generating product, the mounting / removal status of the cap, or the status in which the use of the aerosol generating device (1) is restricted (e.g., detection of an abnormal product), and the display unit (41) can output the above information to the outside. For example, the display unit (41) can be in the form of an LED light-emitting element. For example, the display unit (41) can be a liquid crystal display panel (LCD), an organic light-emitting display panel (OLED), etc.

[0172] The haptic unit (42) can provide tactile information about the aerosol generating device (1) to the user by converting an electrical signal into a mechanical stimulus or an electrical stimulus. For example, the haptic unit (42) can generate a vibration corresponding to the completion of the initial preheating when initial power is supplied to the heater (15) for a set period of time. The haptic unit (42) can include a vibration motor, a piezoelectric element, or an electrical stimulation device.

[0173] The acoustic output unit (43) can provide information about the aerosol generating device (1) to the user audibly. For example, the acoustic output unit (43) can convert an electrical signal into an acoustic signal and output it to the outside.

[0174] The battery (12) can supply power used to operate the aerosol generating device (1). The battery (12) can supply power so that the heater (15) can be heated. In addition, the battery (12) can supply power required for the operation of other components provided in the aerosol generating device (1), such as the sensor unit (14), the output unit (40), the input unit (70), the communication unit (50), and the memory (60). The battery (12) can be a rechargeable battery or a disposable battery. For example, the battery (12) can be a lithium polymer (LiPoly) battery, but is not limited thereto.

[0175] Although not shown in FIG. 8, the aerosol generating device (1) may further include a power protection circuit. The power protection circuit may be electrically connected to the battery (12) and include a switching element.

[0176] The power protection circuit can block the electrical path to the battery (12) according to certain conditions. For example, the power protection circuit can block the electrical path to the battery (12) when the voltage level of the battery (12) is higher than a first voltage corresponding to overcharge. For example, the power protection circuit can block the electrical path to the battery (12) when the voltage level of the battery (12) is lower than a second voltage corresponding to overdischarge.

[0177] The heater (15) can receive power from the battery (12) to heat the medium or aerosol generating material within the stick. Although not shown in FIG. 8, the aerosol generating device (1) may further include a power conversion circuit (e.g., a DC / DC converter) that converts the power of the battery (12) and supplies it to the heater (15). In addition, when the aerosol generating device (1) generates the aerosol by induction heating, the aerosol generating device (1) may further include a DC / AC converter that converts the direct current power of the battery (12) into alternating current power.

[0178] The control unit (13), the sensor unit (14), the output unit (40), the input unit (70), the communication unit (50), and the memory (60) can receive power from the battery (12) and perform their functions. Although not shown in FIG. 8, the device may further include a power conversion circuit, for example, an LDO (low dropout) circuit or a voltage regulator circuit, which converts the power of the battery (12) and supplies it to each component. In addition, although not shown in FIG. 8, a noise filter may be provided between the battery (12) and the stick heater (15). The noise filter may be a low pass filter. The low pass filter may include at least one inductor and a capacitor. The cutoff frequency of the low pass filter may correspond to the frequency of the high frequency switching current applied from the battery (12) to the stick heater (15). The low pass filter can prevent high frequency noise components from being applied to the sensor unit (14), such as the insertion detection sensor (143).

[0179] In one embodiment, the heater (15) may be formed of any suitable electrically resistive material. For example, suitable electrically resistive materials may be metals or metal alloys including, but not limited to, titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, and the like. In addition, the stick heater (15) may be implemented as, but not limited to, a metal heating wire, a metal heating plate having electrically conductive tracks arranged thereon, a ceramic heating element, and the like.

[0180] In another embodiment, the heater (15) may be an induction heating type heater. For example, the heater (15) may include a susceptor that heats the aerosol generating material by generating heat through a magnetic field applied by a coil.

[0181] The input unit (70) can receive information input from a user or output information to the user. For example, the input unit (70) can be a touch panel. The touch panel can include at least one touch sensor that detects touch. For example, the touch sensor can include, but is not limited to, a capacitive touch sensor, a resistive touch sensor, a surface acoustic wave touch sensor, an infrared touch sensor, etc.

[0182] The display unit (41) and the touch panel can be implemented as a single panel. For example, the touch panel can be inserted into the display unit (41) (on-cell type or in-cell type). For example, the touch panel can be added-on to the display unit (41).

[0183] Meanwhile, the input unit (70) may include, but is not limited to, buttons, key pads, dome switches, jog wheels, jog switches, etc.

[0184] The memory (60) is hardware that stores various data processed in the aerosol generating device (1), and can store data processed and data to be processed in the control unit (13). The memory (60) may include at least one type of storage medium among a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk. The memory (60) may store data such as the operating time of the aerosol generating device (1), the maximum number of puffs, the current number of puffs, at least one temperature profile, and data on the user's smoking pattern.

[0185] The communication unit (50) may include at least one component for communication with another electronic device. For example, the communication unit (50) may include at least one of a short-range communication unit and a wireless communication unit.

[0186] The short-range wireless communication unit may include, but is not limited to, a Bluetooth communication unit, a BLE (Bluetooth Low Energy) communication unit, a near field communication unit, a WLAN (Wi-Fi) communication unit, a Zigbee communication unit, an infrared (IrDA, infrared Data Association) communication unit, a WFD (Wi-Fi Direct) communication unit, an UWB (ultra wideband) communication unit, an Ant+ communication unit, etc.

[0187] The wireless communication unit may include, but is not limited to, a cellular network communication unit, an Internet communication unit, a computer network (e.g., a LAN or WAN) communication unit, etc.

[0188] Although not shown in FIG. 8, the aerosol generating device (1) further includes a connection interface such as a USB (universal serial bus) interface, and can transmit and receive information or charge a battery (12) by connecting to another external device through a connection interface such as a USB interface.

[0189] The control unit (13) can control the overall operation of the aerosol generating device (1). In one embodiment, the control unit (13) may include at least one processor. The processor may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory storing a program executable by the microprocessor. Furthermore, it will be understood by those skilled in the art to which the present embodiment pertains that the processor may be implemented as other types of hardware.

[0190] The control unit (13) can control the temperature of the heater (15) by controlling the supply of power from the battery (12) to the heater (15). The control unit (13) can control the temperature of the heater (15) based on the temperature of the heater (15) sensed by the temperature sensor (141). The control unit (13) can adjust the power supplied to the heater (15) based on the temperature of the heater (15). For example, the control unit (13) can determine a target temperature for the heater (15) based on a temperature profile stored in the memory (60).

[0191] The aerosol generating device (1) may include a power supply circuit (not shown) electrically connected to the battery (12) between the battery (12) and the heater (15). The power supply circuit may be electrically connected to the heater (15) or the induction coil (181). The power supply circuit may include at least one switching element. The switching element may be implemented by a bipolar junction transistor (BJT), a field effect transistor (FET), or the like. The control unit (13) may control the power supply circuit.

[0192] The control unit (13) can control power supply by controlling the switching of the switching elements of the power supply circuit. The power supply circuit may be an inverter that converts direct current power output from the battery (12) into alternating current power. For example, the inverter may be configured as a full-bridge circuit or a half-bridge circuit including a plurality of switching elements.

[0193] The control unit (13) can turn on the switching element so that power is supplied from the battery (12) to the heater (15). The control unit (13) can turn off the switching element so that power supply to the heater (15) is cut off. The control unit (13) can control the current supplied from the battery (12) by controlling the frequency and / or duty ratio of the current pulse input to the switching element.

[0194] The control unit (13) can control the voltage output from the battery (12) by controlling the switching of the switching element of the power supply circuit. The power conversion circuit can convert the voltage output from the battery (12). For example, the power conversion circuit can include a buck converter that steps down the voltage output from the battery (12). For example, the power conversion circuit can be implemented using a buck-boost converter, a zener diode, etc.

[0195] The control unit (13) can control the on / off operation of the switching element included in the power conversion circuit to adjust the level of the voltage output from the power conversion circuit. When the on state of the switching element continues, the level of the voltage output from the power conversion circuit may correspond to the level of the voltage output from the battery (12). The duty ratio for the on / off operation of the switching element may correspond to the ratio of the voltage output from the power conversion circuit to the voltage output from the battery (12). As the duty ratio for the on / off operation of the switching element decreases, the level of the voltage output from the power conversion circuit may decrease. The heater (15) can be heated based on the voltage output from the power conversion circuit.

[0196] The control unit (13) can control power to be supplied to the stick heater (15) using at least one of the pulse width modulation (PWM) method and the proportional-integral-differential (PID) method.

[0197] For example, the control unit (13) can control a current pulse having a predetermined frequency and duty ratio to be supplied to the heater (15) using the PWM method. The control unit (13) can control the power supplied to the heater (15) by adjusting the frequency and duty ratio of the current pulse.

[0198] For example, the control unit (13) can determine a target temperature that is the target of control based on a temperature profile. The control unit (13) can control the power supplied to the heater (15) by using a PID method, which is a feedback control method using a difference value between the temperature of the heater (15) and the target temperature, a value obtained by integrating the difference value over time, and a value obtained by differentiating the difference value over time.

[0199] The control unit (13) can prevent the heater (15) from overheating. For example, the control unit (13) can control the operation of the power conversion circuit so that the supply of power to the heater (15) is cut off based on the temperature of the heater (15) exceeding a preset limit temperature. For example, the control unit (13) can reduce the amount of power supplied to the heater (15) by a certain percentage based on the temperature of the heater (15) exceeding a preset limit temperature. For example, the control unit (13) can determine that the aerosol generating material contained in the cartridge (19) is exhausted based on the temperature of the heater (15) exceeding the limit temperature, and can cut off the supply of power to the heater (15).

[0200] The control unit (13) can control the charging and discharging of the battery (12). The control unit (13) can check the temperature of the battery (12) based on the output signal of the temperature sensor (141).

[0201] When a power line is connected to the main body electrode of the aerosol generating device (1), the control unit (13) can check whether the temperature of the battery (12) is higher than or equal to the first limit temperature, which is a criterion for blocking charging of the battery (12). If the temperature of the battery (12) is lower than the first limit temperature, the control unit (13) can control the battery (12) to be charged based on a preset charging current. If the temperature of the battery (12) is higher than or equal to the first limit temperature, the control unit (13) can block charging of the battery (12).

[0202] When the power of the aerosol generating device (1) is turned on, the control unit (13) can check whether the temperature of the battery (12) is higher than or equal to the second limit temperature, which is a standard for blocking discharge of the battery (12). If the temperature of the battery (12) is lower than the second limit temperature, the control unit (13) can control to use the power stored in the battery (12). If the temperature of the battery (12) is higher than or equal to the second limit temperature, the control unit (13) can stop using the power stored in the battery (12).

[0203] The control unit (13) can calculate the remaining capacity of the power stored in the battery (12). For example, the control unit (13) can calculate the remaining capacity of the battery (12) based on the voltage and / or current sensing values ​​of the battery (12).

[0204] The control unit (13) can determine whether a stick is inserted into the insertion space through the insertion detection sensor (143). The control unit (13) can determine whether an aerosol generating product is inserted based on the output signal of the insertion detection sensor (143). If it is determined that an aerosol generating product is inserted into the insertion space, the control unit (13) can control to supply power to the heater (15). For example, the control unit (13) can supply power to the heater (15) based on a temperature profile stored in the memory (60).

[0205] The control unit (13) can determine whether an aerosol-generating article is removed from the insertion space. For example, the control unit (13) can determine whether an aerosol-generating article is removed from the insertion space through the insertion detection sensor (143). For example, the control unit (13) can determine that an aerosol-generating article is removed from the insertion space when the temperature of the heater (15) is higher than a limited temperature or when the temperature change slope of the heater (15) is higher than a set slope. When it is determined that an aerosol-generating article is removed from the insertion space, the control unit (13) can cut off the power supply to the heater (15).

[0206] The control unit (13) can control the power supply time and / or power supply amount to the heater (15) according to the state of the aerosol-generating article detected by the sensor unit (14). The control unit (13) can check the level range within which the signal level of the capacitance sensor is included based on a lookup table. The control unit (13) can determine the moisture content of the aerosol-generating article according to the checked level range.

[0207] When the aerosol generating article is in a hyper-humidified state, the control unit (13) can control the power supply time to the heater (15) to increase the preheating time of the aerosol generating article compared to the normal state.

[0208] The control unit (13) can determine whether an aerosol-generating article inserted into an insertion space has been reused through a reuse detection sensor (144). For example, the control unit (13) can compare a sensing value of a signal of the reuse detection sensor with a first reference range that includes a first color, and if the sensing value is included in the first reference range, it can determine that the aerosol-generating article has not been used. For example, the control unit (13) can compare a sensing value of a signal of the reuse detection sensor with a second reference range that includes a second color, and if the sensing value is included in the second reference range, it can determine that the aerosol-generating article has been used. If it is determined that the aerosol-generating article has been used, the control unit (13) can cut off the supply of power to the heater (15).

[0209] The control unit (13) can make a judgment regarding the user's inhalation through the puff sensor (142). For example, the control unit (13) can determine whether a puff has been generated based on the sensing value of the signal of the puff sensor. For example, the control unit (13) can determine the intensity of the puff based on the sensing value of the signal of the puff sensor (142). If the number of puffs reaches a preset maximum number of puffs or if no puffs are detected for a preset time or longer, the control unit (13) can cut off the power supply to the heater (15).

[0210] The control unit (13) can determine whether the cap is attached and / or removed through the cap detection sensor (146). For example, the control unit (13) can determine whether the cap is attached and / or removed based on the sensing value of the signal of the cap detection sensor.

[0211] The control unit (13) can control the output unit (40) based on the result detected by the sensor unit (14). For example, when the number of puffs counted through the puff sensor (142) reaches a preset number, the control unit (13) can notify the user that the aerosol generating device (1) will soon be terminated through at least one of the display unit (41), the haptic unit (42), and the sound output unit (43). For example, the control unit (13) can notify the user through the output unit (40) based on a determination that no aerosol generating product exists in the insertion space. For example, the control unit (13) can notify the user through the output unit (40) based on a determination that the cap is not mounted. For example, the control unit (13) can transmit information about the temperature of the heater (15) to the user through the output unit (40).

[0212] The control unit (13) can store and update the history of events that have occurred in the memory (60) based on the occurrence of a predetermined event. The event may include operations such as detection of insertion of an aerosol generating article, initiation of heating of the aerosol generating article, detection of puff, termination of puff, detection of overheating of the heater (15), detection of overvoltage application to the heater (15), termination of heating of the aerosol generating article, power on / off of the aerosol generating device (1), initiation of charging of the battery (12), detection of overcharge of the battery (12), termination of charging of the battery (12), etc., performed in the aerosol generating device (1). The history of events may include the date and time when the event occurred, log data corresponding to the event, etc. For example, when the predetermined event is detection of insertion of an aerosol generating article, the log data corresponding to the event may include data on the sensing value of the insertion detection sensor (143), etc. For example, if a given event is overheating detection of a heater (15), log data corresponding to the event may include data on the temperature of the heater (15), the voltage applied to the heater (15), the current flowing through the heater (15), etc.

[0213] The control unit (13) can control to form a communication link with an external device, such as a user's mobile terminal. When data regarding authentication is received from the external device through the communication link, the control unit (13) can release the restriction on the use of at least one function of the aerosol generating device (1). Here, the data regarding authentication can include data indicating completion of user authentication for a user corresponding to the external device. The user can perform user authentication through the external device. The external device can determine whether user data is valid based on the user's birthday, a unique number representing the user, etc., and can receive data regarding the use authorization of the aerosol generating device (1) from an external server. The external device can transmit data indicating completion of user authentication to the aerosol generating device (1) based on the data regarding the use authorization. When the user authentication is completed, the control unit (13) can release the restriction on the use of at least one function of the aerosol generating device (1). For example, the control unit (13) can release the restriction on the use of the heating function that supplies power to the stick heater (15) when user authentication is completed.

[0214] The control unit (13) can transmit data on the status of the aerosol generating device (1) to the external device via a communication link formed with the external device. Based on the received status data, the external device can output the remaining capacity of the battery (12) of the aerosol generating device (1), the operation mode, etc. through the display of the external device.

[0215] An external device may transmit a location search request to the aerosol generating device (1) based on an input that initiates location search of the aerosol generating device (1). When receiving a location search request from the external device, the control unit (13) may control at least one of the output devices to perform an operation corresponding to the location search based on the received location search request. For example, in response to the location search request, the haptic unit (42) may generate vibration. For example, in response to the location search request, the display unit (41) may output an object corresponding to the location search and the end of the search.

[0216] The control unit (13) can control to perform a firmware update when receiving firmware data from an external device. The external device can check the current version of the firmware of the aerosol generating device (1) and determine whether a new version of the firmware exists. When an input requesting firmware download is received, the external device can receive a new version of the firmware data and transmit the new version of the firmware data to the aerosol generating device (1). The control unit (13) can control to perform a firmware update of the aerosol generating device (1) upon receiving a new version of the firmware data.

[0217] The control unit (13) can transmit data on the sensing value of at least one sensor unit (14) to an external server (not shown) through the communication unit (50), and receive and store a learning model generated by learning the sensing value through machine learning such as deep learning from the server. The control unit (13) can perform an operation of determining a user's inhalation pattern, an operation of generating a temperature profile, etc. using the learning model received from the server. The control unit (13) can store, in the memory (60), the sensing value data of at least one sensor unit (14) and data for learning an artificial neural network (ANN). For example, the memory (60) can store a database for each component provided in the aerosol generating device (1) for learning an artificial neural network (ANN), and weights and biases forming an artificial neural network (ANN) structure. The control unit (13) can learn data on the sensing values ​​of at least one sensor unit (14), the user's suction pattern, the temperature profile, etc., stored in the memory (60), and generate at least one learning model used for determining the user's suction pattern, generating the temperature profile, etc.

[0218] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0219] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0220] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. In an aerosol generating article through which an aerosol generated from a cartridge passes, A front end through which the aerosol is introduced into the aerosol generating article; A medium portion located downstream of the above-mentioned shear section and containing an aerosol generating substance; A filter section located downstream of the above medium section; A first wrapper surrounding the shear portion, the medium portion and the filter portion; a second wrapper surrounding the first wrapper; and An aerosol generating article, which is positioned between the first wrapper and the second wrapper and includes a reactive material that chemically reacts with the liquefied aerosol and ignites it during the process of passing through the aerosol generating article.

2. In paragraph 1, An aerosol generating article, wherein the above reactive material comprises potassium permanganate.

3. In paragraph 1, An aerosol generating article wherein the above reactive material chemically reacts with glycerin contained in the liquefied aerosol.

4. In paragraph 1, An aerosol generating article wherein the above reactive material is applied in the form of particles between the first wrapper and the second wrapper.

5. In paragraph 4, An aerosol generating article, wherein the above-mentioned reactive material is applied to a position corresponding to the upstream portion of the medium portion or the filter portion between the first wrapper and the second wrapper.

6. In paragraph 1, An aerosol generating article, wherein the first wrapper and the second wrapper discolor as the reactant ignites.

7. Aerosol-generating articles; and An aerosol generating device including a product receiving portion for receiving the aerosol generating product; The above aerosol generating article is, Front end; A medium portion located downstream of the above-described shear section and containing a first aerosol generating material; A filter section located downstream of the above medium section; A first wrapper surrounding the shear portion, the medium portion and the filter portion; a second wrapper surrounding the first wrapper; and It is located between the first wrapper and the second wrapper, and includes a reactive material that chemically reacts with the liquefied aerosol and ignites in the process of passing through the aerosol generating article, The above aerosol generating device, a body including a cartridge receptacle; and A cartridge is provided in the cartridge receiving portion, and includes a storage tank in which a second aerosol generating substance in a liquid phase is stored, and an atomizer for heating the second aerosol generating substance to generate an aerosol. An aerosol generating system in which an aerosol generated from the second aerosol generating material passes through the aerosol generating article and is then discharged to the outside of the aerosol generating device.

8. In paragraph 7, An aerosol generating system wherein the above-mentioned article receiving portion is placed inside the cartridge.

9. In paragraph 8, An aerosol generating system in which an aerosol generated from the second aerosol generating material is introduced into the article receiving portion and then passes through the aerosol generating article.

10. In paragraph 7, As the above reactant ignites, the first wrapper and the second wrapper discolor, An aerosol generating system, wherein the aerosol generating device further comprises a color sensor for detecting discoloration of the second wrapper.

11. In paragraph 10, An aerosol generating system, wherein the color sensor is positioned at a position corresponding to the reaction material when the aerosol generating article is received in the article receiving section.

12. In paragraph 11, An aerosol generating system, wherein the color sensor is positioned to face at least a portion of the reaction material when the aerosol generating article is received in the article receiving portion.

13. In paragraph 10, An aerosol generating system, wherein the aerosol generating device further includes a processor that controls power supplied to the heater based on the detection result of the color sensor.

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