Heating element and aerosol generation including the same

Abstract

A heating element configured to generate heat using surface plasmon resonance may include a foam, the foam including a plurality of metal particles configured to generate heat by surface plasmon resonance, and a plurality of pores between the plurality of metal particles.

Description

Technical Field

[0001] The present disclosure relates to a heating element configured to generate heat by surface plasmon resonance (SPR), and for example, to an aerosol generating device including the heating element.

Background Art

[0002] Techniques for generating heat to heat a target have been developed. As an example, heat can be generated by supplying electrical energy to an electrically resistive element. As another example, heat can be generated by electromagnetic coupling between a coil and a susceptor. The background art described above is what was possessed or acquired during the derivation process of the present disclosure, and is not necessarily known art publicly disclosed to the general public prior to the filing of the present disclosure.

Summary of the Invention

Problems to be Solved by the Invention

[0003] One aspect of the present disclosure can provide a heating element that uses surface plasmon resonance to generate heat and an aerosol generating device including the same.

Means for Solving the Problems

[0004] The heating element includes a foam, and the foam may include a plurality of metal particles configured to generate heat by surface plasmon resonance and a plurality of pores between the plurality of metal particles.

[0005] The foam may include a substrate including the plurality of metal particles and the plurality of pores.

[0006] The substrate and the plurality of metal particles may be formed of different materials from each other.

[0007] The plurality of metal particles may include nanoparticles.

[0008] The foam may include a pervious area through which light can pass between the plurality of pores.

[0009] At least some of the plurality of pores may be fluidly connected.

[0010] At least some of the plurality of pores may be open to the outside of the foam.

[0011] The heating element may further include a reflector disposed on the foam and configured to reflect light toward the foam.

[0012] The reflector may be disposed along at least a portion of an edge region of the foam.

[0013] The foam may further include a cavity.

[0014] The foam may further include a perforated member.

[0015] The aerosol generating device includes a light source and a heating element configured to receive light from the electrical light source. The heating element includes a foam, and the foam may include a plurality of metal particles configured to generate heat by surface plasmon resonance and a plurality of pores between the plurality of metal particles.

[0016] The electrical light source may be configured to emit light having a wavelength of about 380 nm or more.

[0017] The electrical light source may include a plurality of light sources configured to emit light toward different sides of the foam, respectively.

[0018] The aerosol generation system includes an aerosol generating article and an aerosol generator configured to generate an aerosol from the aerosol generating article. The aerosol generator includes a light source and a heating element configured to receive light from the electrical light source. The heating element includes a foam, and the foam may include a plurality of metal particles configured to generate heat by surface plasmon resonance and a plurality of pores between the plurality of metal particles.

Advantages of the Invention

[0019] According to one embodiment, when the heating element is applied to heat a target, the target may be locally heated or at least some of a plurality of targets may be heated. According to one embodiment, the energy efficiency (e.g., battery efficiency) of a device (e.g., an aerosol generator) to which the heating element is applied may be improved. According to one embodiment, a substance may be generated from an article (e.g., an aerosol generating article) to which the heating element is applied by vaporization rather than combustion by the heat generated by the heating element. The effects of the heating element according to one embodiment and the aerosol generator including the same are not limited to those described above, and other effects not described will be clearly understood by those skilled in the art from the following description.

[0020] The foregoing other aspects, features, and advantages of examples of specific embodiments of the present disclosure will become apparent from the following detailed description with reference to the accompanying drawings.

Brief Description of the Drawings

[0021]

Figure 1

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Figure 3

Figure 4

Figure 5

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Figure 10

MODE FOR CARRYING OUT THE INVENTION

[0022] The terms used in the embodiments are generally selected as widely used at present as possible while considering the functions in the present invention. However, this may vary depending on the intentions or precedents of those skilled in the art, the emergence of new technologies, etc. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in such cases, the meaning thereof will be described in detail in the description part of the corresponding invention. Therefore, the terms used in the present invention are not merely the names of the terms, but must be defined based on the meaning of the terms and the overall content of the present invention.

[0023] Throughout the specification, when any part "includes" any component, this means that other components are not excluded and further includes other components, unless otherwise stated to the contrary. Also, terms such as "~ part" and "~ module" described in the specification mean units that process at least one function or operation, and this can be realized by hardware, software, or a combination of hardware and software.

[0024] Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those having ordinary knowledge in the technical field to which the present invention pertains can easily implement them. However, the present invention can be realized in various different forms and is not limited to the embodiments described herein.

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0026] FIGS. 1 to 3 are diagrams showing an example in which an aerosol-generating article is inserted into an aerosol generator.

[0027] Referring to FIG. 1, the aerosol generator 1 includes a battery 11, a control unit 12, and a heater 13. Referring to FIGS. 2 and 3, the aerosol generator 1 further includes an atomizer 14. Further, an aerosol-generating article 2 (for example, a roll-up tobacco) may be inserted into the internal space of the aerosol generator 1.

[0028] The aerosol generator 1 shown in FIGS. 1 to 3 shows the components related to the present embodiment. Therefore, those having ordinary knowledge in the technical field related to the present embodiment will be able to understand that the aerosol generator 1 may further include different general-purpose components in addition to the components shown in FIGS. 1 to 3.

[0029] Also, FIGS. 2 and 3 show the aerosol generator 1 as including the heater 13, but the heater 13 may be omitted as necessary.

[0030] FIG. 1 shows a configuration in which the battery 11, the control unit 12, and the heater 13 are arranged in a row. Further, FIG. 2 shows a configuration in which the battery 11, the control unit 12, the vaporizer 14, and the heater 13 are arranged in a row. Further, FIG. 3 shows a configuration in which the vaporizer 14 and the heater 13 are arranged in parallel. However, the internal structure of the aerosol generator 1 is not limited to that shown in FIGS. 1 to 3. In other words, depending on the design of the aerosol generator 1, the arrangements of the battery 11, the control unit 12, the heater 13, and the vaporizer 14 can be changed.

[0031] When the aerosol generating article 2 is inserted into the aerosol generator 1, the aerosol generator 1 can operate the heater 13 and / or the vaporizer 14 to generate an aerosol. The aerosol generated by the heater 13 and / or the vaporizer 14 passes through the aerosol generating article 2 and is transmitted to the user.

[0032] Optionally, even when the aerosol generating article 2 is not inserted into the aerosol generator 1, the aerosol generator 1 may heat the heater 13.

[0033] The battery 11 supplies electric power used for the operation of the aerosol generator 1. For example, the battery 11 may supply electric power so that the heater 13 or the vaporizer 14 can be heated, or may supply electric power necessary for the operation of the control unit 12. Further, the battery 11 may supply electric power necessary for the operation of a display, a sensor, a motor, etc. installed in the aerosol generator 1.

[0034] The control unit 12 generally controls the operation of the aerosol generator 1. Specifically, the control unit 12 controls not only the battery 11, the heater 13, and the vaporizer 14, but also the operations of other components included in the aerosol generator 1. Further, the control unit 12 may check the state of each component of the aerosol generator 1 and determine whether the aerosol generator 1 is in an operable state.

[0035] The control unit 12 includes at least one processor. The processor may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory storing a program executable by this microprocessor. Also, those having ordinary knowledge in the technical field to which this embodiment belongs can understand that it can also be implemented by other forms of hardware.

[0036] The heater 13 can be heated by the power supplied from the battery 11. For example, when the aerosol generating article is inserted into the aerosol generating device 1, the heater 13 may be disposed outside the aerosol generating article. Therefore, the heated heater 13 can raise the temperature of the aerosol generating substance in the aerosol generating article.

[0037] The heater 13 may be an electric resistance heater. For example, the heater 13 may include a conductive track, and the heater 13 may be heated when an electric current flows through the conductive track. However, the heater 13 is not limited to the above-described example, and any heater that can heat to a desired temperature can be applicable without limitation. Here, the desired temperature may be preset in the aerosol generating device 1, or may be set to a desired temperature by the user.

[0038] On the other hand, as another example, the heater 13 may be an induction heating type heater. Specifically, the heater 13 may include a conductive coil for heating the aerosol generating article by an induction heating method, and the aerosol generating article may include a susceptor that can be heated by the induction heating type heater.

[0039] For example, the heater 13 may include a tube-type heating element, a plate-type heating element, a needle-type heating element, or a rod-type heating element, and may heat the inside or outside of the aerosol generating article 2 according to the shape of the heating element.

[0040] In addition, a plurality of heaters 13 may be arranged in the aerosol generating device 1. Here, the plurality of heaters 13 may be arranged so as to be inserted inside the aerosol generating article 2, or may be arranged outside the aerosol generating article 2. Also, some of the plurality of heaters 13 may be arranged so as to be inserted inside the aerosol generating article 2, and the rest may be arranged outside the aerosol generating article 2. Further, the shape of the heater 13 is not limited to the shapes shown in FIGS. 1 to 3, and may be manufactured in various shapes.

[0041] The vaporizer 14 can heat the liquid composition to generate an aerosol, and the generated aerosol can be transmitted to the user through the aerosol generating article 2. In other words, the aerosol generated by the vaporizer 14 can move along the air flow path of the aerosol generating device 1, and the air flow path can be configured such that the aerosol generated by the vaporizer 14 passes through the aerosol generating article and is transmitted to the user.

[0042] For example, the vaporizer 14 may include, but is not limited to, a liquid storage part (for example, a reservoir), a liquid transfer means, and a heating element. For example, the liquid storage part, the liquid transfer means, and the heating element may be included in the aerosol generating device 1 as independent modules.

[0043] The liquid storage part may store the liquid composition. For example, the liquid composition may be a liquid containing a tobacco-containing substance containing a volatile tobacco flavor component, or may be a liquid containing a non-tobacco substance. The liquid storage part may be manufactured so as to be detachable / attachable from the vaporizer 14, or may be manufactured integrally with the vaporizer 14.

[0044] For example, the liquid-phase composition may contain water, a solvent, ethanol, a plant extract, a fragrance, a flavoring agent, or a vitamin mixture. The fragrance may include, but is not limited to, menthol, peppermint, spearmint oil, and aroma components of various fruits. The flavoring agent may include components that can provide various fragrances or flavors to the user. The vitamin mixture may be a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. Further, the liquid-phase composition may contain an aerosol-forming agent such as glycerin and propylene glycol.

[0045] The liquid transfer means can transfer the liquid-phase composition in the liquid storage part to the heating element. For example, the liquid transfer means may be, but is not limited to, a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0046] The heating element is an element for heating the liquid-phase composition transferred by the liquid transfer means. For example, the heating element includes, but is not limited to, a metal heating wire, a metal hot plate, a ceramic heater, etc. Further, the heating element may be composed of a conductive filament such as a nichrome wire and may be arranged in a structure wound around the liquid transfer means. The heating element is heated by current supply, transfers heat to the liquid composition in contact therewith, and can heat the liquid composition. As a result, an aerosol can be generated.

[0047] For example, the vaporizer 14 is referred to as, but is not limited to, a cartomizer or an atomizer.

[0048] On the one hand, the aerosol generating device 1 may further include a general configuration in addition to the battery 11, the control unit 12, the heater 13, and the vaporizer 14. For example, the aerosol generating device 1 may include a display capable of outputting visual information and / or a motor for outputting tactile information. Further, the aerosol generating device 1 may include at least one sensor (such as a puff detection sensor, a temperature detection sensor, an aerosol article insertion detection sensor, etc.). Further, the aerosol generating device 1 may be manufactured in a structure that allows outside air to flow in or internal gas to flow out even when the aerosol article 2 is inserted.

[0049] Although not shown in FIGS. 1 to 3, the aerosol generating device 1 can also form a system together with another cradle. For example, the cradle may be used to charge the battery 11 of the aerosol generating device 1. Or, the heater 13 may be heated in a state where the cradle and the aerosol generating device 1 are coupled.

[0050] The aerosol article 2 can be similar to a general combustion-type cigarette. For example, the aerosol article 2 may be divided into a first part containing an aerosol generating substance and a second part containing a filter or the like. Or, the second part of the aerosol article 2 may also contain an aerosol generating substance. For example, an aerosol generating substance made in the form of granules or capsules may be inserted into the second part.

[0051] Inside the aerosol generating device 1, the entire first part may be inserted, and the second part may be exposed to the outside. Or, only a part of the first part may be inserted inside the aerosol generating device 1, or the entire first part and a part of the second part may be inserted. The user can inhale the aerosol with the second part held in the mouth. Here, the aerosol is generated by the outside air passing through the first part, and the generated aerosol is transmitted to the user's mouth through the second part.

[0052] As an example, outside air can flow into the aerosol generator 1 through at least one air passage formed therein. For example, the opening and closing of the air passage formed in the aerosol generator 1 and / or the size of the air passage may be adjusted by the user. Therefore, the amount of smoke, smoking feeling, etc. may be adjusted by the user. As another example, outside air may flow into the interior of the aerosol generating article 2 through at least one hole formed on the surface of the aerosol generating article 2.

[0053] Hereinafter, an example of the aerosol generating article 2 will be described with reference to FIGS. 4 and 5.

[0054] FIGS. 4 and 5 are diagrams showing examples of aerosol generating articles.

[0055] Referring to FIG. 4, the aerosol generating article 2 includes a tobacco rod 21 and a filter rod 22. Referring to FIGS. 1 to 3, the aforementioned first part 21 includes the tobacco rod 21, and the second part 22 includes the filter rod 22.

[0056] In FIG. 4, the filter rod 22 is shown as a single segment, but is not limited thereto. In other words, the filter rod 22 may be composed of a plurality of segments. For example, the filter rod 22 may include a segment for cooling the aerosol and a segment for filtering a predetermined component contained in the aerosol. Further, if necessary, the filter rod 22 may further include at least one segment for performing other functions.

[0057] The diameter of the aerosol generating article 2 may be within the range of 5 mm to 9 mm, and the length may be about 48 mm, but is not limited thereto. For example, the length of the tobacco rod 21 may be about 12 mm, the length of the first segment of the filter rod 22 may be about 10 mm, the length of the second segment of the filter rod 22 may be about 14 mm, and the length of the third segment of the filter rod 22 may be about 12 mm, but is not limited thereto.

[0058] The aerosol generating article 2 can be wrapped by at least one wrapper 24. At least one hole can be formed in the wrapper 24 for outside air to flow in or the internal gas to flow out. As an example, the aerosol generating article 2 may be wrapped by one wrapper 24. As another example, the aerosol generating article 2 may be repeatedly wrapped by two or more wrappers 24. For example, the tobacco rod 21 may be wrapped by the first wrapper 241, and the filter rod 22 may be wrapped by the wrappers 242, 243, 244. And the whole aerosol generating article 2 may be repackaged by a single wrapper 245. If the filter rod 22 is composed of a plurality of segments, each segment may be wrapped by the wrappers 242, 243, 244.

[0059] The first wrapper 241 and the second wrapper 242 can be made of a general filter paper. For example, the first wrapper 241 and the second wrapper 242 may be porous paper or non-porous paper. Also, the first wrapper 241 and the second wrapper 242 may be made of oil-resistant papers and / or aluminum laminated paper packaging materials.

[0060] The third wrapper 243 can be made of hard paper. For example, the basis weight of the third wrapper 243 may be included in the range of 88 g / m 2 ~96 g / m 2 and preferably may be included in the range of 90 g / m 2 ~94 g / m 2 Also, the thickness of the third wrapper 243 may be included in the range of 120 μm to 130 μm, and preferably may be 125 μm.

[0061] The fourth wrapper 244 can be made of oil-resistant hard paper. For example, the basis weight of the fourth wrapper 244 may be included in the range of 88 g / m 2 ~96 g / m 2 and preferably may be included in the range of 90 g / m 2 ~94 g / m 2It may be included within the range. Also, the thickness of the fourth wrapper 244 may be included within the range of 120 μm to 130 μm, and preferably may be 125 μm.

[0062] The fifth wrapper 245 can be made of sterilized paper (MFW). Here, sterilized paper (MFW) means paper specially manufactured so that its tensile strength, water resistance, smoothness, etc. are enhanced compared to general paper. For example, the basis weight of the fifth wrapper 245 may be included within the range of 57 g / m 2 ~63 g / m 2 and preferably may be 60 g / m 2 Also, the thickness of the fifth wrapper 245 may be included within the range of 64 μm to 70 μm, and preferably may be 67 μm.

[0063] A predetermined substance may be added to the fifth wrapper 245. Here, as an example of the predetermined substance, silicon may be applicable, but is not limited thereto. For example, silicon has properties such as heat resistance with little change due to temperature, oxidation resistance that is not oxidized, resistance to various chemicals, water repellency to water, or electrical insulation. However, even if it is not silicon, as long as it is a substance having the above-described properties, it can be applied (or coated) to the fifth wrapper 245 without limitation.

[0064] The fifth wrapper 245 can prevent the development of combustion of the aerosol generating article 2. For example, when the tobacco rod 21 is heated by the heater 13, the aerosol generating article 2 may burn. Specifically, when the temperature rises above the ignition point of any one of the substances contained in the tobacco rod 21, the aerosol generating article 2 can burn. Even in such a case, since the fifth wrapper 245 contains a non-combustible substance, the development of combustion of the aerosol generating article 2 can be prevented.

[0065] In addition, the fifth wrapper 245 can prevent the aerosol generating device (e.g., the holder) from being contaminated by the substances generated by the aerosol generating article 2. Depending on the user's puff, a liquid substance can be generated within the aerosol generating article 2. For example, the aerosol generated by the aerosol generating article 2 may be cooled by the outside air, whereby a liquid substance (e.g., moisture, etc.) may be generated. By wrapping the aerosol generating article 2 with the fifth wrapper 245, it is possible to prevent the liquid substance generated within the aerosol generating article 2 from leaking to the outside of the aerosol generating article 2.

[0066] The tobacco rod 21 contains an aerosol generating substance. For example, the aerosol generating substance may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Further, the tobacco rod 21 may contain other additive substances such as flavoring agents, wetting agents, and / or organic acids. Also, a flavoring liquid such as menthol or a humectant may be added to the tobacco rod 21 by being sprayed onto the tobacco rod 21.

[0067] The tobacco rod 21 can be manufactured in various ways. For example, the tobacco rod 21 may be manufactured from a sheet or from a strand. Also, the tobacco rod 21 may be manufactured from cut tobacco in which the tobacco sheet is finely cut. Further, the tobacco rod 21 may be surrounded by a heat conductive material. For example, the heat conductive material may be a metal foil such as an aluminum foil, but is not limited thereto. As an example, the heat conductive material surrounding the tobacco rod 21 can evenly disperse the heat transmitted to the tobacco rod 21 and improve the heat conductivity applied to the tobacco rod, thereby improving the taste of the tobacco. Also, the heat conductive material surrounding the tobacco rod 21 can function as a susceptor that is heated by an induction heating heater. Here, although not shown in the drawings, the tobacco rod 21 may further include an additional susceptor in addition to the heat conductive material surrounding the outside.

[0068] The filter rod 22 can be a cellulose acetate filter. On the other hand, there is no limitation on the shape of the filter rod 22. For example, the filter rod 22 may be a cylindrical rod or a tube-type rod having a hollow inside. Also, the filter rod 22 may be a recessed-type rod. If the filter rod 22 is composed of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.

[0069] The first segment of the filter rod 22 can be a cellulose acetate filter. For example, the first segment may be a tubular structure having a hollow inside. When the heater 13 is inserted by the first segment, it is also possible to prevent the phenomenon that the internal substance of the tobacco rod 21 shifts backward, and a cooling effect of the aerosol can also occur. The diameter of the hollow included in the first segment adopts an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto.

[0070] The length of the first segment is preferably within the range of 4 mm to 30 mm, but is not limited thereto. Preferably, the length of the first segment can be 10 mm, but is not limited thereto.

[0071] The hardness of the first segment can be adjusted by adjusting the content of the plasticizer during the production of the first segment. Further, the first segment may be produced by inserting a structure such as a film or a tube made of the same or a mold-releasing material inside (for example, hollow).

[0072] The second segment of the filter rod 22 cools the aerosol generated by the heater 13 heating the tobacco rod 21. Accordingly, the user can inhale the aerosol cooled to an appropriate temperature.

[0073] The length or diameter of the second segment can be determined in various ways according to the form of the aerosol generating article 2. For example, the length of the second segment may be appropriately adopted within the range of 7 mm to 20 mm. Preferably, the length of the second segment can be about 14 mm, but is not limited thereto.

[0074] The second segment can be produced by weaving polymer fibers. In this case, a flavoring liquid may be applied to the fibers made of the polymer. Alternatively, the second segment may be produced by weaving together fibers made of a polymer and separately provided fibers to which a flavoring liquid has been applied. Alternatively, the second segment may be formed by a wound polymer sheet.

[0075] For example, the polymer may be made of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminum foil.

[0076] By being formed of woven polymer fibers or wound polymer sheets, the second segment may include one or more channels extending in the longitudinal direction. Here, the channel means a passage through which a gas (e.g., air or aerosol) passes.

[0077] For example, the second segment made of a wound polymer sheet may be formed of a material having a thickness between about 5 μm and about 300 μm, for example, between about 10 μm and about 250 μm. Also, the total surface area of the second segment may be between about 300 mm 2 / mm and about 1000 mm 2 / mm. Also, the aerosol cooling element may be formed of a material having a specific surface area between about 10 mm 2 / mg and about 100 mm 2 / mg.

[0078] On the other hand, the second segment may include a thread containing a volatile fragrance component. Here, the volatile fragrance component may be menthol, but is not limited thereto. For example, the thread may be filled with a sufficient amount of menthol to provide 1.5 mg or more of menthol to the second segment.

[0079] The third segment of the filter rod 22 may be a cellulose acetate filter. The length of the third segment may be appropriately adopted within the range of 4 mm to 20 mm. For example, the length of the third segment may be about 12 mm, but is not limited thereto.

[0080] In the process of manufacturing the third segment, it may be manufactured such that a fragrance is generated by injecting a flavoring liquid into the third segment. Alternatively, a separate fiber coated with the flavoring liquid may be inserted inside the third segment. The aerosol generated by the tobacco rod 21 is cooled by passing through the second segment of the filter rod 22, and the cooled aerosol is transmitted to the user through the third segment. Therefore, when a flavoring element is added to the third segment, an effect that the persistence of the fragrance transmitted to the user is enhanced may occur.

[0081] Further, the filter rod 22 may include at least one capsule 23. Here, the capsule 23 can perform a function of generating a fragrance and can also perform a function of generating an aerosol. For example, the capsule 23 may have a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 23 may have a spherical or cylindrical shape, but is not limited thereto.

[0082] Referring to FIG. 5, the aerosol generating article 3 may further include a shear plug 33. The shear plug 33 may be disposed on one side of the tobacco rod 31 facing the filter rod 32. The shear plug 33 can prevent the tobacco rod 31 from detaching externally, and can prevent the aerosol liquefied from the tobacco rod 31 during smoking from flowing into the aerosol generating device (FIGS. 1 to 3).

[0083] The filter rod 32 may include a first segment 321 and a second segment 322. Here, the first segment 321 can correspond to the first segment of the filter rod 22 in FIG. 4, and the second segment 322 can correspond to the third segment of the filter rod 22 in FIG. 4.

[0084] The diameter and overall length of the aerosol generating article 3 may correspond to the diameter and overall length of the aerosol generating article 2 in FIG. 4. For example, the length of the shear plug 33 may be about 7 mm, the length of the tobacco rod 31 may be about 15 mm, the length of the first segment 321 may be about 12 mm, and the length of the second segment 322 may be about 14 mm, but is not limited thereto.

[0085] The aerosol generating article 3 may be wrapped by at least one wrapper 35. At least one hole may be formed in the wrapper 35 to allow outside air to flow in or internal gas to flow out. For example, the shear plug 33 may be wrapped by the first wrapper 351, the tobacco rod 31 may be wrapped by the second wrapper 352, the first segment 321 may be wrapped by the third wrapper 353, and the second segment 322 may be wrapped by the fourth wrapper 354. Then, the entire aerosol generating article 3 may be re-wrapped by the fifth wrapper 355.

[0086] Also, at least one perforation 36 may be formed in the fifth wrapper 355. For example, the perforation 36 is formed in the region surrounding the tobacco rod 31, but is not limited thereto. The perforation 36 can serve to transfer the heat generated by the heater 13 shown in FIGS. 2 and 3 to the inside of the tobacco rod 31.

[0087] Also, the second segment 322 may include at least one capsule 34. Here, the capsule 34 can function to generate a fragrance or to generate an aerosol. For example, the capsule 34 may have a structure in which a liquid containing a fragrance is encapsulated by a film. The capsule 34 may have a spherical or cylindrical shape, but is not limited thereto.

[0088] The first wrapper 351 can be a general filter paper roll with a metal foil such as aluminum foil bonded thereto. For example, the overall thickness of the first wrapper 351 may be included within the range of 45 μm to 55 μm, and preferably may be 50.3 μm. Also, the thickness of the metal foil of the first wrapper 351 may be included within the range of 6 μm to 7 μm, and preferably may be 6.3 μm. Further, the basis weight of the first wrapper 351 is 2 ~55 g / m 2 and may be included within the range of, and preferably may be 2 53 g / m.

[0089] The second wrapper 352 and the third wrapper 353 can be manufactured from a general filter paper roll. For example, the second wrapper 352 and the third wrapper 353 may be a porous paper roll or a non-porous paper roll.

[0090] For example, the porosity of the second wrapper 352 may be 35000 CU, but is not limited thereto. Also, the thickness of the second wrapper 352 may be included within the range of 70 μm to 80 μm, and preferably may be 78 μm. Further, the basis weight of the second wrapper 352 is 2 ~25 g / m 2 and may be included within the range of, and preferably may be 2 23.5 g / m.

[0091] For example, the porosity of the third wrapper 353 may be 24000 CU, but is not limited thereto. Also, the thickness of the third wrapper 353 may be included within the range of 60 μm to 70 μm, and preferably may be 68 μm. Further, the basis weight of the third wrapper 353 is 2 ~25 g / m 2 and may be included within the range of, and preferably may be 2 21 g / m.

[0092] The fourth wrapper 354 can be manufactured from PLA laminated paper. Here, PLA laminated paper means triple-layer paper including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the fourth wrapper 354 may be included within the range of 100 μm to 120 μm, and preferably may be 110 μm. Also, the basis weight of the fourth wrapper 354 may be included within the range of 2 80 g / m 2 to 100 g / m 2 and preferably may be 88 g / m

[0093] The fifth wrapper 355 can be manufactured from sterilized paper (MFW). Here, sterilized paper (MFW) means paper specially manufactured so that its tensile strength, water resistance, smoothness, etc. are enhanced compared to general paper. For example, the basis weight of the fifth wrapper 355 may be included within the range of 57 g / m 2 to 63 g / m 2 and preferably may be 60 g / m 2 Also, the thickness of the fifth wrapper 355 may be included within the range of 64 μm to 70 μm, and preferably may be 67 μm.

[0094] A predetermined substance may be added to the fifth wrapper 355. Here, as an example of the predetermined substance, silicon may be applicable, but is not limited thereto. For example, silicon has properties such as heat resistance with little change due to temperature, oxidation resistance that is not oxidized, resistance to various chemicals, water repellency to water, or electrical insulation. However, even if it is not silicon, as long as it is a substance having the above-described properties, it can be applied (or coated) to the fifth wrapper 355 without limitation.

[0095] The shearing plug 33 can be manufactured from cellulose acetate. As an example, the shearing plug 33 may be manufactured by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. The mono denier of the filaments constituting the cellulose acetate tow may be included in the range of 1.0 to 10.0, preferably in the range of 4.0 to 6.0. More preferably, the mono denier of the filaments of the shearing plug 33 may be 5.0. Also, the cross-section of the filaments constituting the shearing plug 33 may be Y-shaped. The total denier of the shearing plug 33 may be included in the range of 20,000 to 30,000, preferably in the range of 25,000 to 30,000. More preferably, the total denier of the shearing plug 33 may be 28,000.

[0096] Also, if necessary, the shearing plug 33 may include at least one channel, and the cross-sectional shape of the channel can be manufactured in various ways.

[0097] The tobacco rod 31 may correspond to the tobacco rod 21 described above with reference to FIG. 4. Therefore, specific descriptions of the tobacco rod 31 will be omitted below.

[0098] The first segment 321 can be manufactured from cellulose acetate. For example, the first segment may be a tubular structure including a hollow inside. The first segment 321 may be manufactured by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. For example, the mono denier and total denier of the first segment 321 may be the same as those of the shearing plug 33.

[0099] The second segment 322 can be manufactured from cellulose acetate. The mono denier of the filaments constituting the second segment 322 may be included in the range of 1.0 to 10.0, preferably may be included in the range of 8.0 to 10.0. More preferably, the mono denier of the filaments of the second segment 322 may be 9.0. Also, the cross section of the filaments of the second segment 322 may be Y-shaped. The total denier of the second segment 322 may be included in the range of 20,000 to 30,000, preferably may be 25,000.

[0100] FIG. 6 is a block diagram of an aerosol generating device 400 according to an embodiment.

[0101] The aerosol generating device 400 may include a control unit 410, a detection unit 420, an output unit 430, a battery 440, a heater 450, a user input unit 460, a memory 470, and a communication unit 480. However, the internal structure of the aerosol generating device 400 is not limited to that shown in FIG. 6. That is, those having ordinary knowledge in the technical field related to this embodiment will be able to understand that, according to the design of the aerosol generating device 400, some of the configurations shown in FIG. 6 may be omitted or new configurations may be further added.

[0102] The detection unit 420 can detect the state of the aerosol generating device 400 or the state around the aerosol generating device 400 and transmit the detected information to the control unit 410. The control unit 410 can control the aerosol generating device 400 based on the detected information so that various functions such as operation control of the heater 450, restriction of smoking, determination of the presence or absence of insertion of aerosol generating articles (for example, cigarettes, cartridges, etc.), and notification display are executed.

[0103] The detection unit 420 may include at least one of a temperature sensor 422, an insertion detection sensor 424, and a puff sensor 426, but is not limited thereto.

[0104] The temperature sensor 422 can detect the temperature at which the heater 450 (or the aerosol generating substance) is heated. The aerosol generating device 400 may include a separate temperature sensor for detecting the temperature of the heater 450, or the heater 450 itself can serve as the temperature sensor. Alternatively, the temperature sensor 422 may be arranged around the battery 440 to monitor the temperature of the battery 440.

[0105] The insertion detection sensor 424 can detect the insertion and / or removal of the aerosol generating article. For example, the insertion detection sensor 424 may include at least one of a film sensor, a pressure sensor, a light sensor, a resistive sensor, a capacitive sensor, an inductive sensor, and an infrared sensor, and may detect a signal change due to the insertion and / or removal of the aerosol generating article.

[0106] The puff sensor 426 can detect the user's puff based on various physical changes in the air flow path or air flow channel. For example, the puff sensor 426 may detect the user's puff based on any one of a temperature change, a flow change, a voltage change, and a pressure change.

[0107] In addition to the sensors (422 to 426) described above, the detection unit 420 may further include at least one of a temperature / humidity sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a gyroscope sensor, a position sensor (e.g., GPS), a proximity sensor, and an RGB sensor (illuminance sensor). Since the function of the angle sensor can be intuitively inferred by those skilled in the art from its name, a specific description may be omitted.

[0108] The output unit 430 can output information regarding the state of the aerosol generator 400 and provide it to the user. The output unit 430 may include at least one of a display unit 432, a haptic unit 434, and an acoustic output unit 436, but is not limited thereto. When the display unit 432 and the touch pad form a layer structure and are configured as a touch screen, the display unit 432 can be used as an input device in addition to an output device.

[0109] The display unit 432 can visually provide information regarding the aerosol generator 400 to the user. For example, the information regarding the aerosol generator 400 may mean various information such as the charge / discharge state of the battery 440 of the aerosol generator 400, the preheating state of the heater 450, the insertion / removal state of the aerosol product, or a state in which the use of the aerosol generator 400 is limited (e.g., detection of an abnormal article), and the display unit 432 may output the information to the outside. The display unit 432 may be, for example, a liquid crystal display panel (LCD), an organic light emitting display panel (OLED), or the like. Also, the display unit 432 may be in the form of an LED light emitting element.

[0110] The haptic unit 434 can convert an electrical signal into a mechanical or electrical stimulus and provide information regarding the aerosol generator 400 to the user tactilely. For example, the haptic unit 434 may include a motor, a piezoelectric element, or an electrical stimulation device.

[0111] The acoustic output unit 436 can aurally provide information regarding the aerosol generator 400 to the user. For example, the acoustic output unit 436 may convert an electrical signal into an acoustic signal and output it to the outside.

[0112] The battery 440 can supply the power used for the aerosol generator 400 to operate. The battery 440 can supply power so that the heater 450 can be heated. Also, the battery 440 can supply the power necessary for the operation of different components (for example, the detection unit 420, the output unit 430, the user input unit 460, the memory 470, and the communication unit 480) provided in the aerosol generator 400. The battery 440 can be a rechargeable battery or a disposable battery. For example, the battery 440 may be a lithium polymer (LiPoly) battery, but is not limited thereto.

[0113] The heater 450 can be supplied with power from the battery 440 to heat the aerosol generating substance. Although not shown in FIG. 6, the aerosol generator 400 may further include a power conversion circuit (for example, a DC / DC converter) that converts the power of the battery 440 and supplies it to the heater 450. Also, when the aerosol generator 400 generates aerosol by an induction heating method, the aerosol generator 400 may further include a DC / AC converter that converts the DC power supply of the battery 440 into an AC power supply.

[0114] The control unit 410, the detection unit 420, the output unit 430, the user input unit 460, the memory 470, and the communication unit 480 can be supplied with power from the battery 440 and perform functions. Although not shown in FIG. 6, it may further include a power conversion circuit that converts the power of the battery 440 and supplies it to each component, for example, an LDO (low dropout) circuit or a voltage regulator circuit.

[0115] In one embodiment, the heater 450 can be formed of any suitable electrically resistive material. For example, suitable electrically resistive materials may include, but are not limited to, metals or metal alloys such as titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, etc. Further, the heater 450 can be realized by a metal wire, a metal plate with conductive tracks disposed thereon, a ceramic heating element, etc., but is not limited thereto.

[0116] In one embodiment, the heater 450 can be an induction heating type heater. For example, the heater 450 may include a susceptor that generates heat through a magnetic field applied by a coil and heats the aerosol generating material.

[0117] In one embodiment, the heater 450 can include a plurality of heaters. For example, the heater 450 may include a first heater for heating the aerosol generating article and a second heater for heating the liquid phase.

[0118] The user input unit 460 can receive information input from the user or output information to the user. For example, the user input unit 460 can include, but is not limited to, a keypad, a dome switch, a touch pad (capacitive touch type, pressure resistive film type, infrared detection type, surface acoustic wave conduction type, integral tension measurement type, piezoelectric effect type, etc.), a jog wheel, a jog switch, etc. Further, although not shown in FIG. 6, the aerosol generating device 400 can further include a connection interface such as a USB (universal serial bus) interface, and can be connected to other external devices via a connection interface such as a USB interface to transmit and receive information or charge the battery 440.

[0119] Memory 470 can store data processed by control unit 410 and data to be processed, as hardware for storing various data processed within aerosol generator 400. Memory 470 may include at least one type of storage medium among flash memory type, hard disk type, multimedia card micro type, card type memory (e.g., SD or XD memory, etc.), RAM (random access memory), SRAM (static random access memory), ROM (read-only memory), EEPROM (electrically erasable programmable read-only memory), PROM (programmable read-only memory), magnetic memory, magnetic disk, and optical disk. Memory 470 can store data such as the operation time of aerosol generator 400, the maximum puff count, the current puff count, at least one temperature profile, and data regarding the user's smoking pattern.

[0120] Communication unit 480 may include at least one component for communication with other electronic devices. For example, communication unit 480 may include short-range communication unit 482 and wireless communication unit 484.

[0121] Short-range wireless communication unit 482 may include, but is not limited to, Bluetooth (registered trademark) communication unit, BLE (Bluetooth (registered trademark) Low Energy) communication unit, Near Field Communication unit, WLAN (Wi-Fi) communication unit, Zigbee (registered trademark) communication unit, infrared (IrDA, infrared Data Association) communication unit, WFD (Wi-Fi Direct) communication unit, UWB (ultra-wideband) communication unit, Ant+ communication unit, etc.

[0122] The wireless communication unit 484 may include, but is not limited to, a cellular network communication unit, an Internet communication unit, a computer network (e.g., LAN or WAN) communication unit, etc. The wireless communication unit 484 can also confirm and authenticate the aerosol generator 400 within the communication network using subscriber information (e.g., the International Mobile Subscriber Identifier (IMSI)).

[0123] The control unit 410 can control the overall operation of the aerosol generator 400. In one embodiment, the control unit 410 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 this microprocessor. Also, those with ordinary knowledge in the technical field to which this embodiment belongs can understand that it can also be implemented with other forms of hardware.

[0124] The control unit 410 can control the temperature of the heater 450 by controlling the supply of power from the battery 440 to the heater 450. For example, the control unit 410 may control the power supply by controlling the switching of a switching element between the battery 440 and the heater 450. As another example, according to the control command of the control unit 410, the heating direct circuit can also control the power supply to the heater 450.

[0125] The control unit 410 can analyze the results detected by the detection unit 420 and then control the subsequent executed processes. For example, the control unit 410 may control the power supplied to the heater 450 so that the operation of the heater 450 starts or ends based on the results detected by the detection unit 420. In other examples, the control unit 410 may control the amount of power supplied to the heater 450 and the time during which the power is supplied so that the heater 450 is heated to a predetermined temperature or can maintain an appropriate temperature based on the results detected by the detection unit 420.

[0126] The control unit 410 can control the output unit 430 based on the results detected by the detection unit 420. For example, when the puff count counted via the puff sensor 426 reaches a preset number of times, the control unit 410 may notify the user that the aerosol generator 400 will end soon via at least one of the display unit 432, the haptic unit 434, and the acoustic output unit 436.

[0127] In one embodiment, the control unit 410 can control the power supply time and / or the power supply amount to the heater 450 according to the state of the aerosol-generating article detected by the detection unit 420. For example, when the aerosol-generating article is in an over-wet state, the control unit 410 can control the power supply time to the induction coil and increase the preheating time compared to when the aerosol-generating article is in a general state.

[0128] One embodiment can also be realized in the form of a recording medium including computer-executable instructions such as program modules executed by a computer. The computer-readable medium may be any available medium accessible by a computer, including all volatile and non-volatile media, and all removable and non-removable media. Also, the computer-readable medium may include all computer storage media and communication media. The computer storage media includes all volatile and non-volatile, removable and non-removable media implemented by any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. The communication media typically includes modulated data signals such as computer-readable instructions, data structures, program modules, and other data, or other transmission mechanisms, and includes any information transmission media.

[0129] FIG. 7 is a diagram showing a heating element according to one embodiment and an aerosol generation system including the same, and FIG. 8 is an enlarged view of part A of the heating element of FIG. 7 according to one embodiment.

[0130] Referring to FIGS. 7 and 8, the aerosol generating system 500 may include an aerosol generating article 501 containing a vaporizable substance and an aerosol generating device 502 configured to generate an aerosol from the aerosol generating article 501.

[0131] The aerosol generating device 502 may include a heating element 550. The heating element 550 may be configured to generate heat by surface plasmon resonance. The term "surface plasmon resonance" refers to the collective oscillation of electrons propagating along the interface of metal particles with a medium. For example, the collective oscillation of electrons of metal particles may be generated by light hitting the heating element 550. The excitation of electrons of metal particles generates thermal energy, and the generated thermal energy can be transmitted into the environment where the heating element 550 is present. In one embodiment, the heating element 550 may be configured to heat another object (e.g., the aerosol generating article 501) by transmitting the generated heat to the object.

[0132] In one embodiment, the heating element 550 may be configured to heat an object (e.g., the aerosol generating article 501) at any suitable temperature. For example, the heating element 550 may be configured to heat the object at a temperature of about 200°C to about 350°C or less. By using surface plasmon resonance for the heating element 550, the size of the energy source (e.g., a battery) supplied to the aerosol generating device 502 can be reduced.

[0133] In one embodiment, the heating element 550 may include a foam 552. The foam 552 may include a first surface 552A (e.g., the upper surface in FIG. 7) and a second surface 552B (e.g., the lower surface in FIG. 7) opposite to the first surface 552A.

[0134] In one embodiment, the aerosol generating article 501 may be disposed on the first surface 552A of the foam 552. For example, the aerosol generating article 501 may be spaced apart from the first surface 552A. Alternatively, the aerosol generating article 501 may be in substantial contact with the first surface 552A.

[0135] In one embodiment, the foam 552 may include a plurality of metal particles 5521. The plurality of metal particles 5521 may include any material suitable for generating heat by surface plasmon resonance. For example, the plurality of metal particles 5521 may include at least one of gold, silver, copper, palladium, platinum, aluminum, titanium, nickel, chromium, iron, cobalt, manganese, rhodium, and ruthenium, or a combination thereof.

[0136] In one embodiment, the plurality of metal particles 5521 may be formed of any material suitable for interacting with light in a predetermined wavelength band (e.g., the visible light wavelength band, i.e., from about 380 nm to about 780 nm) to generate heat. For example, the plurality of metal particles may include at least one of gold, silver, copper, palladium, and platinum, or a combination thereof.

[0137] In one embodiment, the plurality of metal particles 5521 may have a nanoscale size. For example, the plurality of metal particles 5521 may have an average maximum diameter of about 1 μm or less. In some embodiments, the plurality of metal particles 5521 may have an average maximum diameter of about 700 nm or less, about 600 nm or less, about 500 nm or less, about 400 nm or less, about 300 nm or less, about 200 nm or less, about 150 nm or less, or about 100 nm or less.

[0138] In one embodiment, the plurality of metal particles 5521 can be formed of a metal material having an average maximum absorbance. Here, the average maximum absorbance can be defined as the absorbance having a substantially peak corresponding to a specific wavelength band. The specific wavelength band corresponding to the absorbance can be understood as the wavelength band at which the plurality of metal particles 5521 resonate. For example, the plurality of metal particles 5521 can be formed of a metal material having an average maximum absorbance in a wavelength band between about 430 nm and about 450 nm, between about 480 nm and about 500 nm, between about 490 nm and about 510 nm, between about 500 nm and about 520 nm, between about 550 nm and about 570 nm, between about 600 nm and about 620 nm, between about 620 nm and about 640 nm, between about 630 nm and about 650 nm, between about 640 nm and about 660 nm, between about 680 nm and about 700 nm, or between about 700 nm and about 750 nm.

[0139] In one embodiment, the plurality of metal particles 5521 can form a substrate 553. Here, forming the substrate 553 means that the plurality of metal particles 5521 are arranged so as to form the shape of the substrate 553. The substrate 553 may have a first surface 552A and a second surface 552B of the foam 552.

[0140] In one embodiment, the foam 552 can include a plurality of pores 5522. The plurality of pores 5522 can allow air to pass through. For example, air may flow from the second surface 552B of the foam 552 through the plurality of pores 5522 to the first surface 552A of the foam 552. The air can pass through the aerosol generating article 501 to transmit the aerosol to the user.

[0141] In one embodiment, the plurality of pores 5522 can be formed surrounded by the plurality of metal particles 5521. At least a part of the plurality of pores 5522 may be open to the outside of the foam 552. At least a part of the plurality of pores 5522 may be in fluid connection with each other.

[0142] In one embodiment, the sizes of the plurality of pores 5522 may be substantially equal to or larger than the sizes of the plurality of metal particles 5521. For example, the plurality of pores 5522 may have an average maximum dimension (e.g., width or diameter) of about 1 μm or more, about 5 μm or more, about 10 μm or more, about 20 μm or more, about 30 μm or more, about 50 μm or more, or about 100 μm or more. The plurality of pores 5522 may have an average maximum dimension (e.g., width or diameter) of about 200 μm or less, about 150 μm or less, about 100 μm or less, about 50 μm or less, or about 20 μm or less.

[0143] In one embodiment, the plurality of pores 5522 can be formed such that the foam 552 has any porosity suitable for allowing air passage. For example, the porosity of the foam 552 may be about 5 ppi (pores per inch) or more, about 10 ppi or more, about 20 ppi or more, about 30 ppi or more, about 50 ppi or more, about 100 ppi or more, about 200 ppi or more, about 300 ppi or more, about 500 ppi or more, or about 700 ppi or more. The porosity of the foam 552 may be about 5,000 ppi or less, about 4,000 ppi or less, about 3,000 ppi or less, about 2,000 ppi or less, about 1,000 ppi or less, about 500 ppi or less, about 300 ppi or less, about 150 ppi or less, about 120 ppi or less, or about 100 ppi or less.

[0144] In one embodiment, the foam 552 may include a transmission region PA through which light passes between the plurality of pores 5522. At least a portion of the plurality of metal particles 5521 may be disposed in the transmission region PA. While light passes through the transmission region PA, heat is generated by the surface plasmon resonance of the plurality of metal particles 5521, and the foam 522 can be heated as a whole.

[0145] In one embodiment, the amount of heat transfer of the foam 552 may depend on the size and shape of the foam 552.

[0146] In one embodiment, the substrate 553 can be formed of a metal material different from the material of the plurality of metal particles 5521. For example, the substrate 553 may be formed of stainless steel (e.g., SUS314), aluminum, copper, and / or any other metal material.

[0147] In one embodiment, the substrate 553 can be formed of a material having any thermal conductivity suitable for use in the environment where the heating element 550 is disposed. For example, the substrate 553 may have a thermal conductivity of about 0.6 W / mK or less, about 1 W / mK to about 2 W / mK, about 2 W / mK to about 5 W / mK, about 5 W / mK to about 10 W / mK, about 10 W / mK to about 100 W / mK, about 100 W / mK to about 200 W / mK at a pressure of 1 bar and a temperature of 25°C. In some embodiments, the substrate 553 may have a thermal conductivity of about 0.6 W / mK or less, about 1.3 W / mK, about 148 W / mK, or about 46.06 W / mK at a pressure of 1 bar and a temperature of 25°C.

[0148] In one embodiment, the substrate 553 can exhibit conductivity. In one embodiment, the substrate 553 can exhibit electrical insulation.

[0149] In one embodiment, the heating element 550 can include a reflector 554 configured to reflect light toward the foam 552. The reflector 554 reflecting the light transmitted through the foam 552 toward the foam 552 can improve the light utilization efficiency of the heating element 550 by allowing the plurality of metal particles 5521 to utilize the reflected light, and accordingly improve the associated heat generation efficiency.

[0150] In one embodiment, the reflector 554 can have a layered structure. The reflector 554 can extend along at least a part of the edge region (e.g., the first surface 552A) of the foam 552.

[0151] In one embodiment, the reflector 554 may be disposed on the first surface 552A of the foam 552. The reflector 554 may be substantially in contact with the first surface 552A of the foam 552. In one embodiment, the reflector 554 may be formed over the entire first surface 552A of the foam 552. In one embodiment, the reflector 554 may be formed on a part of the first surface 552A of the foam 552. For example, the reflector 554 may be realized as a single reflection area or a plurality of reflection areas in a partial region of the first surface 552A of the foam 552.

[0152] In one embodiment, the reflector 554 may be disposed between the aerosol generating article 501 and the foam 552. The reflector 554 may be substantially in contact with the aerosol generating article 501.

[0153] In one embodiment, the reflector 554 may be formed of any material suitable for reflecting light (e.g., a metallic material). For example, the reflector 554 may be formed of at least one of gold, silver, copper, and any other metallic material suitable for reflection, or a combination thereof.

[0154] In one embodiment, the reflector 554 may have any thickness suitable for reflecting light. The thickness of the reflector 554 may be determined to a value suitable for substantially total reflection of light. For example, the thickness of the reflector 554 may be about 15 nm or less, about 12 nm or less, about 10 nm or less, about 8 nm or less, or about 5 nm or less. As a preferred example, the reflector 554 may have a thickness of about 10 nm.

[0155] In one embodiment, the aerosol generator 502 may include a light source 560. The light source 560 may be configured to emit light toward the second surface 552B of the foam 552.

[0156] In one embodiment, the light source 560 may be configured to emit light at a predetermined angle toward the heating element 550. For example, the light source 560 may emit light at an angle at which total reflection can occur on the surface of the heating element 550. In one embodiment, the light source 560 may emit light at any angle toward the heating element 550.

[0157] In one embodiment, the light source 560 may be configured to emit light in the visible light band (e.g., from about 380 nm to about 780 nm). For example, when the plurality of metal particles 5521 contain gold, the light source 560 may emit light having a wavelength of about 600 nm to about 650 nm. When the plurality of metal particles 5521 contain silver, the light source 560 may emit light having a wavelength of about 450 nm to about 550 nm. In one embodiment, the light source 560 may include an infrared heat source.

[0158] In one embodiment, the light source 560 may emit light with any suitable output. For example, the light source 560 may emit light with an output of about 900 mW.

[0159] In one embodiment, the light source 560 may include a light-emitting diode and / or a laser. The light-emitting diode and / or the laser may have a type and / or size suitable for inclusion in the aerosol generator 500. As an example, the laser may include a solid-state laser and / or a semiconductor laser.

[0160] FIG. 9 is a diagram showing a heating element according to one embodiment and an aerosol generation system including the same.

[0161] Referring to FIG. 9, the aerosol generation system 600 may include an aerosol generation article 601 and an aerosol generator 602. The aerosol generator 602 may include a heating element 650.

[0162] In one embodiment, the heating element 650 may include a foam 652. The foam 652 may include a first surface 652A (e.g., the left side surface in FIG. 9), a second surface 652B opposite the first surface 652A (e.g., the right side surface in FIG. 9), a third surface 652C between the first surface 652A and the second surface 652B (e.g., the upper side surface in FIG. 9), and a fourth surface 652D between the third surface 652C and opposite the first surface 652A and the second surface 652B (e.g., the lower side surface in FIG. 9).

[0163] In one embodiment, the foam 652 may include a cavity 651. The cavity 651 may be configured to at least partially receive the aerosol generating article 601. The cavity 651 may have a shape corresponding to the outer profile of the aerosol generating article 601. The cavity 651 may be realized as a recess formed from the third surface 652C to the fourth surface 652D of the foam 652.

[0164] In one embodiment, the heating element 650 may include a reflector 654. The reflector 654 may include a first reflector 654A disposed on the third surface 652C of the foam 652. The first reflector 654A may extend along at least a part of the edge region (e.g., the third surface 652C) of the foam 652. The first reflector 654A may be substantially in contact with the third surface 652C of the foam 652. The first reflector 654A may be formed over the entire third surface 652C of the foam 652. The first reflector 654A may be formed on a part of the third surface 652C of the foam 652.

[0165] In one embodiment, the reflector 654 may include a second reflector 654B disposed on the inner surface of the cavity 651 of the foam 652 (e.g., on the concave surface). The second reflector 654B may be disposed between the foam 652 and the aerosol generating article 601. The second reflector 654B may be substantially in contact with the inner surface of the cavity 651. The second reflector 654B may be formed over the entire inner surface of the cavity 651. The second reflector 654B may be formed on a part of the inner surface of the cavity 651.

[0166] In one embodiment, the first reflector 654A and the second reflector 654B may be connected to each other. For example, the first reflector 654A and the second reflector 654B may be integrally and seamlessly connected. In one embodiment, the first reflector 654A and the second reflector 654B may also be physically separated from each other.

[0167] In one embodiment, the aerosol generator 600 may include a plurality of light sources 660A, 660B. The plurality of light sources 660A, 660B may be realized by light sources of the same type. In one embodiment, at least a part of the plurality of light sources 660A, 660B may be realized by light sources of different types. Alternatively, the aerosol generator 600 may include a single light source (660A or 660B).

[0168] In one embodiment, the plurality of light sources 660A, 660B may include a first light source 660A configured to emit light toward the first surface 652A of the foam 652, and a second light source 660B configured to emit light toward the second surface 652B of the foam 652. The first light source 660A and the second light source 660B may be disposed on opposite side portions of the foam 652. The first light source 660A may be spaced apart from the first surface 652A of the foam 652. The second light source 660B may be spaced apart from the second surface 652B of the foam 652.

[0169] In one embodiment, at least one of the plurality of light sources 660A, 660B may be configured to illuminate a portion of the heating element 650.

[0170] In one embodiment, the plurality of light sources 660A, 660B may be configured to emit light substantially simultaneously. In one embodiment, the plurality of light sources 660A, 660B may emit light at other times.

[0171] In one embodiment, the plurality of light sources 660A, 660B can illuminate the heating element 650 during substantially the same time period. In one embodiment, the lengths of the illumination times of the plurality of light sources 660A, 660B may be different from each other.

[0172] In one embodiment, the plurality of light sources 660A, 660B may emit light in substantially the same wavelength band. In one embodiment, the plurality of light sources 660A, 660B may emit light in other wavelength bands.

[0173] In one embodiment, the plurality of light sources 660A and 660B can illuminate the heating element 650 with substantially the same illuminance. In one embodiment, the plurality of light sources 660 may emit light having other illuminances.

[0174] FIG. 10 is a diagram showing a heating element according to one embodiment and an aerosol generation system including the same.

[0175] Referring to FIG. 10, the aerosol generation system 700 may include an aerosol generation article 701 and an aerosol generation device 702.

[0176] In one embodiment, the aerosol generation article 701 may include a component (e.g., a cartridge) that is detachable from the aerosol generation device 702 and insertable into the aerosol generation device 702. The aerosol generation article 701 may include a liquid phase composition.

[0177] The aerosol generation device 702 may include a heating element 750. The heating element 750 may include a foam 752. The foam 752 may include a first surface 752A (e.g., the left side surface in FIG. 10), a second surface 752B opposite to the first surface 752A (e.g., the right side surface in FIG. 10), a third surface 752C between the first surface 752A and the second surface 752B (e.g., the lower surface of FIG. 10), and a fourth surface 752D between the first surface 752A and the second surface 752B opposite to the third surface 752C (e.g., the upper surface in FIG. 10).

[0178] The foam 752 may be disposed in the aerosol generation device 702 such that the fourth surface 752D faces the mouth end of the aerosol generation device 702, and the aerosol may be transmitted to the user's oral cavity through the fourth surface 752D.

[0179] The aerosol generation article 701 may be disposed on the fourth surface 752D of the foam 752. For example, the aerosol generation article 701 may be in substantial contact with the fourth surface 752D of the foam 752.

[0180] In one embodiment, the foam 752 may include a perforating member 755. The perforating member 755 may be configured to perforate at least a part of the aerosol generating article 701 when the aerosol generating article 701 is disposed on the fourth surface 752D of the foam 752. When the perforating member 755 perforates the aerosol generating article 701, the vaporizable substance (e.g., the liquid-phase composition) within the aerosol generating article 701 may flow into the foam 752 along the outer surface of the perforating member 755 and / or through the fourth surface 752D of the foam 752. The vaporizable substance may be heated by the foam 752 to undergo a phase change into an aerosol, and the aerosol may move in a direction away from the fourth surface 752D of the foam 752 and be transmitted to the user through the mouth end portion (not shown) of the aerosol generating device 702.

[0181] In one embodiment, the aerosol generating device 702 may include at least one light source 760A, 760B, 760C. For example, the aerosol generating device 702 may include a first light source 760A disposed to emit light toward the first surface 752A of the foam 752, a second light source 760B disposed to emit light toward the second surface 752B of the foam 752, and a third light source 760C disposed to emit light toward the third surface 752C of the foam 752. The first light source 760A may be spaced apart from the first surface 752A. The second light source 760B may be spaced apart from the second surface 752B. The third light source 760C may be spaced apart from the third surface 752C. On the other hand, different from the illustration, the aerosol generating device 702 may include a single light source, two light sources, or four or more light sources.

[0182] The embodiments of this document are exemplary and not restrictive. Various changes to the details of the present disclosure can be made, including those within the scope of the appended patent claims and their equivalents. Any of the embodiments described herein may be used in combination with any other embodiment described herein.

Claims

1. comprising a foam, wherein the foam comprises a plurality of metal particles configured to generate heat by surface plasmon resonance, and a plurality of pores between the plurality of metal particles, and the plurality of pores are surrounded by the plurality of metal particles to form a heat generating body.

2. The heat generating body according to claim 1, wherein the foam comprises a substrate containing the plurality of metal particles and the plurality of pores.

3. The heat generating body according to claim 2, wherein the substrate and the plurality of metal particles are formed of different materials from each other.

4. The heat generating body according to claim 1, wherein the plurality of metal particles include nanoparticles.

5. The heat generating body according to claim 1, wherein the foam includes a transmission region through which light is transmitted between the plurality of pores.

6. The heat generating body according to claim 1, wherein at least a part of the plurality of pores are fluidly connected to each other so that a fluid can flow between the plurality of pores.

7. The heat generating body according to claim 1, wherein at least a part of the plurality of pores are open to the outside of the foam.

8. The heat generating body according to claim 1, further comprising a reflector disposed on the foam and configured to reflect light toward the foam.

9. The heat generating body according to claim 8, wherein the reflector is disposed along at least a part of an edge region of the foam.

10. The heat generating body according to claim 1, wherein the foam further includes a cavity.

11. The heat generating body according to claim 1, wherein the foam further includes a perforating member that perforates at least a part of an aerosol generating article disposed on one side surface of the foam.

12. A light source, and the heat generating body according to claim 1 configured to receive light from an electrical light source, comprising an aerosol generating device.

13. The aerosol generating device according to claim 12, wherein the electrical light source is configured to emit light having a wavelength of about 380 nm or more.

14. The aerosol generating device according to claim 12, wherein the electrical light source includes a plurality of light sources configured to emit light toward different side surfaces of the foam, respectively.

15. An aerosol generating article, and the aerosol generating device according to claim 12 configured to generate an aerosol from the aerosol generating article, comprising an aerosol generating system.

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