Aerosol generating device including a pressure sensor

Abstract

The aerosol generating device includes a housing including a hollow portion and a body portion. The body portion may include a cavity formed in a bottom of the hollow portion. The aerosol generating device includes a membrane that sealably divides the cavity into an upper part and a lower part, and a pressure sensor that seals the bottom of the cavity and detects pressure changes in the lower part of the cavity generated by puffs on an aerosol-generating article (e.g., a cigarette) loaded into the aerosol generating device.

Description

[Technical field]

[0001] The present disclosure relates to aerosol generating devices, and more particularly, to aerosol generating devices that include a pressure sensor. [Background technology]

[0002] In order to improve the atomization performance, techniques for injecting airflow into the aerosol-generating article have been developed, for example, aerosol generating devices that generate aerosols from the aerosol-generating article in a non-combustion manner. Summary of the Invention [Problem to be solved by the invention]

[0003] One aspect of the present disclosure is to provide an aerosol generating device that ensures the performance of a pressure sensor. [Means for solving the problem]

[0004] According to one embodiment, an aerosol generating device includes a hollow portion configured to accommodate an aerosol-generating article and a body portion defining the hollow portion, the body portion including a housing including a cavity having a first cavity surface facing the hollow portion, a second cavity surface opposite the first cavity surface, and a third cavity surface between the first cavity surface and the second cavity surface, a membrane sealing the first cavity surface, and a pressure sensor configured to seal the second cavity surface and detect pressure in the cavity.

[0005] In one embodiment, the membrane may be configured to deform convexly towards the first cavity surface.

[0006] In one embodiment, the membrane may be disposed between the first cavity side and the second cavity side.

[0007] In an embodiment, the membrane may comprise an elastic material.

[0008] In one embodiment, the membrane is at least partially disposed within the body portion. Buried It is possible.

[0009] In one embodiment, the pressure sensor may be provided on the second cavity surface.

[0010] In one embodiment, the cavity may further include a chamber surface between the first cavity surface and the third cavity surface.

[0011] In one embodiment, the body portion may include side portions and a bottom portion, and the cavity may be located in the bottom portion.

[0012] In one embodiment, the base includes a bottom surface and the first cavity surface may be substantially coplanar with the bottom surface.

[0013] In one embodiment, the cross-sectional area of ​​the cavity is substantially the same as the cross-sectional area of ​​the hollow portion. It may be one or less.

[0014] In one embodiment, an aerosol generating system includes an aerosol-generating article and an aerosol generating device configured to generate an aerosol from the aerosol-generating article, the aerosol generating device including a hollow portion configured to accommodate the aerosol-generating article and a body portion defining the hollow portion, the body portion including a housing including a cavity having a first cavity side facing the hollow portion, a second cavity side opposite the first cavity side, and a third cavity side between the first cavity side and the second cavity side, a membrane sealing the first cavity side, and a pressure sensor configured to seal the second cavity side and detect pressure in the cavity.

[0015] In one embodiment, the membrane can be configured to be deformed when a puff is generated.

[0016] In one embodiment, the membrane may be configured to deform convexly toward the first cavity surface when the puff is generated.

[0017] In one embodiment, the aerosol generating device may further include a processor configured to detect a puff based on a pressure change in at least a portion of the cavity below the membrane.

[0018] In one embodiment, the hollow portion may include an airflow channel formed between the aerosol-generating article and the body portion. Effect of the Invention

[0019] According to an embodiment, the performance of the pressure sensor may be maintained or improved. According to an embodiment, puffs may be detected using the pressure sensor. The effects of the aerosol generating device according to an embodiment are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. The effects of the aerosol generating device are not limited to those mentioned in the abnormality, and other different effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 shows an example of an aerosol generating device according to one embodiment with an aerosol-generating article (e.g., a cigarette) inserted therein. [Diagram 2] FIG. 2 shows an example of an aerosol generating device according to one embodiment with an aerosol-generating article (e.g., a cigarette) inserted therein. [Diagram 3] FIG. 2 shows an example of an aerosol generating device according to one embodiment with an aerosol-generating article (e.g., a cigarette) inserted therein. [Figure 4]FIG. 1 illustrates an example of an aerosol-generating article (eg, a cigarette) according to one embodiment. [Diagram 5] FIG. 1 illustrates an example of an aerosol-generating article (eg, a cigarette) according to one embodiment. [Figure 6] FIG. 1 is a block diagram of an aerosol generating device according to an embodiment. [Figure 7] FIG. 1 is a perspective view of an aerosol generation system according to one embodiment. [Figure 8] FIG. 8 is a partial cross-sectional view of the aerosol generation system of FIG. 7 taken along line AA, showing the aerosol generation system in a first state according to one embodiment. [Figure 9] FIG. 8 is a partial cross-sectional view of the aerosol generation system of FIG. 7 taken along line AA, showing the aerosol generation system in a second state according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The terms used in the embodiments are selected as general terms currently widely used as much as possible while taking into consideration the functions in the embodiments, but this may change depending on the intentions or precedents of the engineers engaged in the field, the emergence of new technologies, etc. In addition, in certain cases, the applicant may arbitrarily select terms, and in such cases, the meanings thereof will be described in detail in the description of the relevant invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the overall content of the present invention, rather than simply the names of the terms.

[0022] Throughout the specification, when a part "includes" a certain component, this means that it may further include other components, not excluding other components, unless otherwise specified. Furthermore, the terms "module" and "unit" used in the specification mean a unit that processes at least one function or operation, which is realized by hardware or software, or a combination of hardware and software.

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0024] 1 to 3 are diagrams showing an example of an aerosol generating device in which a cigarette is inserted.

[0025] 1, the aerosol generating device 1 includes a battery 11, a control unit 12, and a heater 13. 2 and 3, the aerosol generating device 1 further includes a vaporizer 14. A cigarette 2 may be inserted into the internal space of the aerosol generating device 1.

[0026] Components related to this embodiment are shown in the aerosol generating device 1 shown in Figures 1 to 3. Therefore, it can be understood by a person having ordinary knowledge in the technical field related to this embodiment that the aerosol generating device 1 further includes other general-purpose components in addition to the components shown in Figures 1 to 3.

[0027] Furthermore, although Figures 2 and 3 show the aerosol generating device 1 as including a heater 13, the heater 13 may be omitted if desired.

[0028] In Fig. 1, the battery 11, the control unit 12, and the heater 13 are shown arranged in a row. In Fig. 2, the battery 11, the control unit 12, the vaporizer 14, and the heater 13 are shown arranged in a row. In Fig. 3, the vaporizer 14 and the heater 13 are shown arranged in parallel. However, the internal structure of the aerosol generation device 1 is not limited to that shown in Figs. 1 to 3. In other words, the arrangement of the battery 11, the control unit 12, the heater 13, and the vaporizer 14 may be changed depending on the design of the aerosol generation device 1.

[0029] When a cigarette 2 is inserted into the aerosol generation device 1, the aerosol generation device 1 can activate the heater 13 and / or vaporizer 14 to generate an aerosol. The aerosol generated by the heater 13 and / or vaporizer 14 is transmitted through the cigarette 2 to the user.

[0030] If desired, the aerosol generating device 1 can heat the heater 13 even when no cigarette 2 is inserted in the aerosol generating device 1 .

[0031] The battery 11 supplies power used to operate the aerosol generating device 1. For example, the battery 11 can supply power to heat the heater 13 or the vaporizer 14, and can supply power necessary for the control unit 12 to operate. The battery 11 can supply the power necessary to operate the display, sensors, motors, etc. provided in the aerosol generating device 1.

[0032] The control unit 12 generally controls the operation of the aerosol generating device 1. Specifically, the control unit 12 controls the operation of not only the battery 11, the heater 13, and the vaporizer 14, but also other components included in the aerosol generating device 1. The control unit 12 may also check the state of each component of the aerosol generating device 1 to determine whether the aerosol generating device 1 is in an operable state.

[0033] The control unit 12 includes at least one processor. The processor may be realized by an array of a large number of logic gates, or may be realized by a combination of a general-purpose microprocessor and a memory in which a program that can be executed by the microprocessor is stored. In addition, it can be understood by a person having ordinary skill in the art to which the present embodiment pertains that the processor may be realized by different forms of hardware.

[0034] The heater 13 can be heated by power supplied from the battery 11. For example, when a cigarette is inserted into the aerosol generating device 1, the heater 13 can be located outside the cigarette. Thus, the heated heater 13 can increase the temperature of the aerosol generating material within the cigarette.

[0035] The heater 13 may be an electric resistive heater. For example, the heater 13 may include an electric conductive track, and the heater 13 may be heated by passing an electric current through the electric conductive track. However, the heater 13 is not limited to the above example, and may be any heater capable of heating to a desired temperature. Here, the desired temperature may be already set in the aerosol generating device 1, or may be set to the desired temperature by a user.

[0036] Meanwhile, as another example, the heater 13 may be an induction heater. Specifically, the heater 13 may include an electrically conductive coil for heating the cigarette in an induction heating manner, and the cigarette may include a susceptor that can be heated by the induction heater.

[0037] For example, the heater 13 can include heating elements having various shapes, for example, the heating elements may include tubular heating elements, plate heating elements, needle heating elements, or rod heating elements, and the pattern of the heating elements can heat the inside or outside of the cigarette 2.

[0038] Furthermore, a plurality of heaters 13 may be disposed in the aerosol generating device 1. In this case, the plurality of heaters 13 may be disposed so as to be inserted inside the cigarette 2, or may be disposed outside the cigarette 2. Furthermore, some of the plurality of heaters 13 may be disposed so as to be inserted inside the cigarette 2, and the rest may be disposed outside the cigarette 2. Furthermore, the shape of the heater 13 is not limited to the shapes shown in Figures 1 to 3, and various shapes can be produced.

[0039] The vaporizer 14 can heat the liquid composition to generate an aerosol, which can be transmitted to the user through the cigarette 2. In other words, the aerosol generated by the vaporizer 14 can travel along an airflow passage of the aerosol generating device 1, which can be configured to allow the aerosol generated by the vaporizer 14 to be transmitted to the user through the cigarette 2.

[0040] For example, the vaporizer 14 may include a liquid storage section, a liquid delivery means, and a heating element. For example, but not limited to, the liquid storage unit, the liquid transfer means and the heating element may be included in the aerosol generating device 1 as independent modules.

[0041] The liquid storage unit can store a liquid composition. For example, the liquid composition may be a liquid containing a tobacco-containing substance including a volatile tobacco flavor component, or a liquid containing a non-tobacco substance. The liquid storage unit may be made so as to be detachable from the vaporizer 14, or may be made integral with the vaporizer 14.

[0042] For example, the liquid composition may include water, solvent, ethanol, plant extract, fragrance, flavoring agent, or vitamin mixture. The fragrance may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit flavoring ingredients, and the like. The flavoring agent may include ingredients that can provide various 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. The liquid composition may also include an aerosol forming agent, such as glycerin and propylene glycol.

[0043] The liquid transfer means can transfer the liquid composition in the liquid containment to the heating element. For example, the liquid transfer means can be a wick such as, but not limited to, cotton fiber, ceramic fiber, glass fiber, porous ceramic, etc.

[0044] The heating element is an element for heating the liquid composition transferred by the liquid transfer means. For example, the heating element may be, but is not limited to, a metal hot wire, a metal hot plate, a ceramic heater, etc. The heating element may also be made 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 can be heated by current supply, and can transfer heat to the liquid composition in contact with the heating element to heat the liquid composition. As a result, an aerosol can be generated.

[0045] For example, the vaporizer 14 may be called, but is not limited to, a cartomizer or an atomizer.

[0046] Meanwhile, the aerosol generating device 1 may further include general-purpose components 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. The aerosol generating device 1 may also include at least one sensor (such as a puff detection sensor, a temperature detection sensor, or a cigarette insertion detection sensor). Furthermore, the aerosol generating device 1 may be fabricated with a structure in which external air flows in or internal gas flows out even when a cigarette 2 is inserted.

[0047] Although not shown in Fig. 1 to Fig. 3, the aerosol generating device 1 may form a system together with a separate cradle. For example, the cradle is used to charge the battery 11 of the aerosol generating device 1. Alternatively, the heater 13 may heat the aerosol generating device 1 while the cradle and the aerosol generating device 1 are combined.

[0048] The cigarette 2 may be similar to a typical combustible cigarette. For example, the cigarette 2 may be divided into a first portion including an aerosol-generating material and a second portion including a filter or the like. Alternatively, the second portion of the cigarette 2 may also include an aerosol-generating material. For example, the aerosol-generating material made in the form of granules or capsules may be inserted into the second portion.

[0049] The entire first part may be inserted into the aerosol generating device 1, and the second part may be exposed to the outside. Alternatively, only a part of the first part may be inserted into the aerosol generating device 1. Preferably, the entire first part and a part of the second part may be inserted. The user can inhale the aerosol while biting the second part in the mouth. In this case, the aerosol is generated by the passage of external air through the first part, and the generated aerosol passes through the second part and is delivered to the user's mouth.

[0050] As an example, the outside air may flow in through at least one air passage formed in the aerosol generating device 1. For example, the opening and closing of the air passage formed in the aerosol generating device 1 and / or the size of the air passage may be adjusted by the user. This allows the user to adjust the amount of atomization, smoking sensation, etc. As another example, the outside air may flow into the cigarette 2 through at least one hole formed in the surface of the cigarette 2.

[0051] An example of a cigarette 2 will now be described with reference to FIGS.

[0052] 4 and 5 are diagrams showing examples of cigarettes.

[0053] 4, the cigarette 2 includes a tobacco rod 21 and a filter rod 22. The first portion 21 described above with reference to FIGS.

[0054] 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 multiple 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. In addition, the filter rod 22 may further include at least one segment for performing another function, if necessary.

[0055] The cigarette 2 may have a diameter in the range of 5 mm to 9 mm and a length of about 48 mm, but is not limited thereto. For example, the tobacco rod 21 may have a length of about 12 mm, the first segment of the filter rod 22 may have a length of about 10 mm, the second segment of the filter rod 22 may have a length of about 14 mm, and the third segment of the filter rod 22 may have a length of about 12 mm, but is not limited thereto.

[0056] The cigarette 2 may be wrapped by at least one wrapper 24. The wrapper 24 may have at least one hole through which external air can flow in or internal gas can flow out. As an example, the cigarette 2 may be wrapped by one wrapper 24. As another example, the cigarette 2 may be wrapped by two or more wrappers 24 in a superimposed manner. For example, the tobacco rod 21 may be wrapped by a first wrapper 241, and the filter rod 22 may be wrapped by wrappers 242, 243, and 244. Also, the entire cigarette 2 may be rewrapped by a single wrapper 245. If the filter rod 22 is composed of a plurality of segments, each of the segments may be wrapped by a wrapper 242, 243, and 244.

[0057] The first wrapper 241 and the second wrapper 242 can be made of a general filter wrapping paper. For example, the first wrapper 241 and the second wrapper 242 may be a porous wrapping paper or a non-porous wrapping paper. The first wrapper 241 and the second wrapper 242 can be made of oil-resistant paper and / or aluminum laminated paper wrapping material.

[0058] The third wrapper 243 can be made of a hard wrapping paper. For example, the basis weight of the third wrapper 243 can be within the range of 88 g / m2 to 96 g / m2, and preferably is 90 g / m2 or less. The thickness of the third wrapper 243 may be within the range of 120 μm to 130 μm, and preferably 125 μm.

[0059] The fourth wrapper 244 can be made of a grease-resistant hard wrapping paper. For example, the basis weight of the fourth wrapper 244 may be within a range of 88 g / m2 to 96 g / m2, and preferably within a range of 90 g / m2 to 94 g / m2. The thickness of the fourth wrapper 244 may be within a range of 120 μm to 130 μm, and preferably 125 μm.

[0060] The fifth wrapper 245 may be made of a sterilized paper (MFW). Here, the sterilized paper (MFW) refers to a paper that is specially manufactured to have improved tensile strength, water resistance, smoothness, etc., compared to general paper. For example, the basis weight of the fifth wrapper 245 may be within the range of 57 g / m2 to 63 g / m2, and preferably 60 g / m2. The thickness of the fifth wrapper 245 may be within the range of 64 μm to 70 μm, and preferably 67 μm.

[0061] A predetermined material may be added to the fifth wrapper 245. Here, an example of the predetermined material may be, but is not limited to, silicon. For example, silicon has properties such as heat resistance, which is less susceptible to change with temperature, oxidation resistance, resistance to various chemicals, water repellency, and electrical insulation. However, any material having the above-mentioned properties other than silicon may be applied (or coated) to the fifth wrapper 245 without any restrictions.

[0062] The fifth wrapper 245 can prevent the cigarette 2 from burning. In general, the cigarette 2 can burn when the tobacco rod 210 is heated by the heater 13. For example, if the temperature of any of the substances contained in the tobacco rod 310 rises above the ignition point, the cigarette 2 can burn. In one embodiment, the fifth wrapper 245 contains a non-combustible substance, and therefore, in this case, the cigarette 2 can be prevented from burning.

[0063] Furthermore, the fifth wrapper 245 can prevent the holder 1 from being contaminated by substances produced in the cigarette 2. A liquid substance can be produced in the cigarette 2 by a user's puff. For example, a liquid substance (e.g., moisture) can be produced when the aerosol produced in the cigarette 2 is cooled by the outside air. In this case, wrapping the cigarette 2 with the fifth wrapper 245 can prevent the liquid substance produced in the cigarette 2 from leaking out of the cigarette 2.

[0064] The tobacco rod 21 includes an aerosol-generating material. For example, the aerosol-generating material 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. The tobacco rod 21 may also include other additives, such as flavoring agents, humectants, and / or organic acids. A flavoring liquid, such as menthol or a humectant, may be added to the tobacco rod 21 by spraying it onto the tobacco rod 21.

[0065] The tobacco rod 21 can be made in a variety of ways. For example, the tobacco rod 21 can be made of a sheet or a strand. The tobacco rod 21 can also be made of cut tobacco, which is a tobacco sheet cut into small pieces. Furthermore, the tobacco rod 21 can be surrounded by a heat-conducting material. For example, the tobacco rod 21 can be made of a sheet or a strand. For example, the thermally conductive material may be, but is not limited to, a metal foil such as aluminum foil. As an example, the thermally conductive material surrounding the tobacco rod 21 can evenly distribute the heat transferred to the tobacco rod 21 to improve the thermal conductivity applied to the tobacco rod, thereby improving the tobacco taste. In addition, the thermally conductive material surrounding the tobacco rod 21 can function as a susceptor heated by an induction heater. In this case, although not shown in the drawings, the tobacco rod 21 can include an additional susceptor in addition to the thermally conductive material surrounding the outside.

[0066] The filter rod 22 may be a cellulose acetate filter. Meanwhile, the shape of the filter rod 22 is not limited. For example, the filter rod 22 may be a cylindrical type rod, or a tube type rod including a hollow inside. The filter rod 22 may also be a recess 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.

[0067] The first segment of the filter rod 22 may be a cellulose acetate filter. For example, the first segment may be a tube-shaped structure having a hollow inside. When the heater 13 is inserted through the first segment, it may prevent the inner material of the tobacco rod 210 from being pushed backward, and may also generate a cooling effect on the aerosol. The diameter of the hollow included in the first segment may be an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto.

[0068] The length of the first segment may be an appropriate length within the range of 4 mm to 30 mm, but is not limited thereto. Preferably, the length of the first segment may be 10 mm, but is not limited thereto.

[0069] The hardness of the first segment can be adjusted by adjusting the content of plasticizer during manufacturing of the first segment. Also, the first segment can be manufactured by inserting a structure such as a film or tube made of the same or different material inside (e.g., hollow).

[0070] The second segment of the filter rod 22 cools the aerosol generated by the heater 13 heating the tobacco rod 21. Thus, the user can inhale the aerosol that has been cooled to an appropriate temperature.

[0071] The length or diameter of the second segment may be determined in various ways depending on the form of the cigarette 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 may be about 14 mm, but is not limited thereto.

[0072] The second segment can be made by weaving polymer fibers. In this case, the scented liquid can be applied to the fibers made of polymer. Alternatively, the second segment can be made by weaving together fibers made of polymer with separate fibers to which the scented liquid is applied. Alternatively, the second segment can be formed by a wound polymer sheet.

[0073] 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.

[0074] The second segment is formed by woven polymer fibers or wound polymer sheets. By this, the second segment can include one or more longitudinally extending channels, where channel refers to a passageway through which a gas (e.g., air or aerosol) can pass.

[0075] For example, the second segment of wound polymer sheet can be made of a material having a thickness between about 5 μm and about 300 μm, such as between about 10 μm and about 250 μm, and the total surface area of ​​the second segment can be between about 300 mm2 and about 1000 mm2. Additionally, the aerosol cooling element can be made of a material with a specific surface area between about 10 mm2 / mg and about 100 mm2 / mg.

[0076] Meanwhile, the second segment can include a thread containing a volatile flavor component, which can be, but is not limited to, menthol. For example, the thread can be loaded with a sufficient amount of menthol to provide 1.5 mg or more of menthol to the second segment.

[0077] The third segment of the filter rod 22 can 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.

[0078] In the process of preparing the third segment, the third segment may be prepared so that a flavor is generated by spraying a flavoring liquid onto the third segment. Alternatively, separate fibers coated with a flavoring liquid may be inserted into the third segment. The aerosol generated in the tobacco rod 21 is cooled as it passes through the second segment of the filter rod 22, and the cooled aerosol is delivered to the user via the third segment. Therefore, when a flavoring element is added to the third segment, the effect of enhancing the persistence of the flavor delivered to the user can be achieved.

[0079] Furthermore, the filter rod 22 may include at least one capsule 23. Here, the capsule 23 may perform a function of generating flavor or a function of generating aerosol. For example, the capsule 23 may have a structure in which a liquid containing a flavoring agent is enveloped in a coating. The capsule 23 may have a spherical or cylindrical shape, but is not limited thereto.

[0080] 5, the cigarette 3 may further include a shear plug 33. The shear plug 33 may be located on one side of the tobacco rod 31 facing the filter rod 32. The shear plug 33 may prevent the tobacco rod 31 from falling out to the outside, and may prevent aerosol liquefied from the tobacco rod 31 during smoking from flowing into the aerosol generating device (FIGS. 1 to 3).

[0081] Filter rod 32 can include a first segment 321 and a second segment 322, where first segment 321 corresponds to the first segment of filter rod 22 of FIG.

[0082] The diameter and overall length of the cigarette 3 correspond to the diameter and overall length of the cigarette 2 of Figure 4. For example, but not limited to, the length of the shear plug 33 may be about 7mm, the length of the tobacco rod 31 about 15mm, the length of the first segment 321 about 12mm, and the length of the second segment 322 about 14mm.

[0083] The cigarette 3 may be wrapped by at least one wrapper 35. The wrapper 35 may have at least one hole through which external air can flow in or internal gas can flow out. For example, the shear plug 33 may be wrapped in a first wrapper 351, the tobacco rod 31 may be wrapped in a second wrapper 352, the first segment 321 may be wrapped in a third wrapper 353, and the second segment 322 may be wrapped in a fourth wrapper 354. Also, the entire cigarette 3 may be rewrapped in a fifth wrapper 355.

[0084] Also, at least one perforation 36 may be formed in the fifth wrapper 355. For example, but not limited to, the perforation 36 may be formed in a region surrounding the tobacco rod 31. The perforation 36 may play a role in transferring heat generated by the heater 13 shown in Figures 2 and 3 to the inside of the tobacco rod 31.

[0085] Further, the second segment 322 may include at least one capsule 34. Here, the capsule 34 may perform a function of generating a flavor or a function of generating an aerosol. For example, the capsule 34 may have a structure in which a liquid containing a flavoring agent is enveloped in a coating. The capsule 34 may have a spherical or cylindrical shape, but is not limited thereto.

[0086] The first wrapper 351 may be a metal foil, such as aluminum foil, bonded to a common filter wrapping paper. For example, the total thickness of the first wrapper 351 may be within a range of 45 μm to 55 μm, and preferably 50.3 μm. The thickness of the metal foil of the first wrapper 351 may be within a range of 6 μm to 7 μm, and preferably 6.3 μm. Furthermore, the basis weight of the first wrapper 351 may be within a range of 50 g / m2 to 55 g / m2, and preferably 53 g / m2.

[0087] The second wrapper 352 and the third wrapper 353 can be made of a common filter wrapping paper. For example, the second wrapper 352 and the third wrapper 353 may be a porous wrapping paper or a non-porous wrapping paper.

[0088] For example, the porosity of the second wrapper 352 may be 35000 CU, but is not limited thereto. The thickness of the second wrapper 352 may be within the range of 70 μm to 80 μm, and preferably 78 μm. The basis weight of the second wrapper 352 may be within the range of 20 g / m2 to 25 g / m2, and preferably 23.5 g / m2.

[0089] For example, the porosity of the third wrapper 353 may be, but is not limited to, 24000 CU. The thickness of the third wrapper 353 may be within the range of 60 μm to 70 μm, and preferably 68 μm. The basis weight of the third wrapper 353 may be within the range of 20 g / m2 to 25 g / m2, and preferably 21 g / m2.

[0090] The fourth wrapper 354 can be made of PLA laminated paper. Here, PLA laminated paper means a triple layer of paper including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the fourth wrapper 354 may be in the range of 100 μm to 120 μm, and preferably 110 μm. Moreover, the basis weight of the fourth wrapper 354 may be in the range of 80 g / m2 to 100 g / m2, and preferably 88 g / m2.

[0091] The fifth wrapper 355 can be made of a sterilized paper (MFW). Here, the sterilized paper (MFW) refers to a paper that is specially manufactured to have improved tensile strength, water resistance, smoothness, etc., compared to general paper. For example, the basis weight of the fifth wrapper 355 is 57 g / m2 to 63 g / m2. The thickness of the fifth wrapper 355 may be in the range of 64 μm to 70 μm, and preferably 67 μm.

[0092] A predetermined material may be added to the fifth wrapper 355. Here, an example of the predetermined material may be, but is not limited to, silicon. For example, silicon has properties such as heat resistance, which is less susceptible to change depending on temperature, oxidation resistance, resistance to various chemicals, water repellency, and electrical insulation. However, any material having the above-mentioned properties other than silicon may be applied (or coated) to the fifth wrapper 355 without any restrictions.

[0093] The shear plug 33 may be made of cellulose acetate. As an example, the shear plug 33 may be made by adding a plasticizer (e.g., triacetin) to the cellulose acetate tow. The mono denier of the filaments constituting the cellulose acetate tow may be within the range of 1.0 to 10.0, and preferably within the range of 4.0 to 6.0. More preferably, the mono denier of the filaments of the shear plug 33 may be 5.0. The cross section of the filaments constituting the shear plug 33 may be Y-shaped. The total denier of the shear plug 33 may be within the range of 20,000 to 30,000, and preferably within the range of 25,000 to 30,000. More preferably, the total denier of the shear plug 33 may be 28,000.

[0094] Also, if desired, the shear plug 33 can include at least one channel, and the cross-sectional shape of the channel can be made to vary.

[0095] The tobacco rod 31 corresponds to the tobacco rod 21 described above with reference to Figure 4. Therefore, a detailed description of the tobacco rod 31 will be omitted below.

[0096] The first segment 321 may be made of cellulose acetate. For example, the first segment may be a tube-shaped structure with a hollow interior. The first segment 321 may be made of cellulose acetate tow with a plasticizer (e.g., triacetin). For example, the mono-denier and total denier of the first segment 321 may be the same as the mono-denier and total denier of the shear plug 33.

[0097] The second segment 322 may be made of cellulose acetate. The mono denier of the filaments constituting the second segment 322 may be within the range of 1.0 to 10.0, and preferably within 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. 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 within the range of 20,000 to 30,000, and preferably 25,000.

[0098] FIG. 6 is a block diagram of an aerosol generating device 400 according to another embodiment.

[0099] The aerosol generating device 400 includes 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. In other words, it is understood in the technical field related to this embodiment that some of the components shown in Fig. 6 may be omitted or new components may be added depending on the design of the aerosol generating device 400. Anyone with knowledge can understand it.

[0100] 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. Based on the detected information, the control unit 410 can control the aerosol generating device 400 to perform various functions such as controlling the operation of the heater 450, restricting smoking, determining whether an aerosol generating article (e.g., a cigarette, a cartridge, etc.) is inserted, displaying notifications, etc.

[0101] The detection unit 420 includes at least one of a temperature sensor 422, an insertion detection sensor 424, and a puff sensor 426, but is not limited to these.

[0102] The temperature sensor 422 can detect the temperature to which the heater 450 (or the aerosol generating material) heats. The aerosol generating device 400 may include a separate temperature sensor for detecting the temperature of the heater 450, or the heater 450 itself may function as a temperature sensor. Alternatively, the temperature sensor 422 may be disposed in the vicinity of the battery 440 so as to monitor the temperature of the battery 440.

[0103] The insertion detection sensor 424 can detect the insertion and / or removal of an aerosol-generating article. For example, the insertion detection sensor 424 can include at least one of a film sensor, a pressure sensor, an optical sensor, a resistive sensor, a capacitive sensor, an inductive sensor, and an infrared sensor, and can detect a signal change due to the insertion and / or removal of an aerosol-generating article.

[0104] The puff sensor 426 can detect a user's puff based on various physical changes in the airflow passage or channel, for example, the puff sensor 426 can detect a user's puff based on any one of a temperature change, a flow change, a voltage change, and a pressure change.

[0105] The detection unit 420 further includes at least one of a temperature / humidity sensor, an air pressure sensor, a geomagnetic sensor, an acceleration sensor, a gyroscope sensor, a position sensor (e.g., GPS), a proximity sensor, and an RGB (illuminance) sensor, in addition to the above-mentioned sensors 422 to 426. The function of the angle sensor can be intuitively inferred by a person skilled in the art from its name, so a detailed description will be omitted.

[0106] The output unit 430 may output and provide to a user information regarding the state of the aerosol generating device 400. The output unit 430 may include, but is not limited to, at least one of a display unit 432, a haptic unit 434, and an audio output unit 436. When the display unit 432 and the touchpad are layered to form a touch screen, the display unit 432 may be used as an input device in addition to an output device.

[0107] The display unit 432 can visually provide information about the aerosol generating device 400 to a user. For example, the information about the aerosol generating device 400 means various information such as a charging / discharging state of the battery 440 of the aerosol generating device 400, a preheating state of the heater 450, an insertion / removal state of an aerosol generating article, or a state in which the use of the aerosol generating device 400 is restricted (e.g., detection of an abnormal article), and the display unit 432 can 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), etc. Also, the display unit 432 may be a state of an LED light emitting element.

[0108] The haptic unit 434 can convert an electrical signal into a mechanical or electrical stimulus to tactilely provide the user with information about the aerosol generating device 400. For example, the haptic unit 434 may include a motor, a piezoelectric element, or an electrical stimulation device.

[0109] The acoustic output unit 436 audibly provides the user with information regarding the aerosol generating device 400. For example, the acoustic output unit 436 can convert an electric signal into an acoustic signal and output it to the outside.

[0110] The battery 440 supplies power used for the operation of the aerosol generating device 400. The battery 440 supplies power so that the heater 450 can heat. The battery 440 can also supply power necessary for the operation of other components (e.g., 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 generating device 400. The battery 440 may 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.

[0111] The heater 450 can heat the aerosol-generating material by receiving power from the battery 440. Although not shown in Fig. 6, the aerosol-generating device 400 may further include a power conversion circuit (e.g., a DC / DC converter) that converts the power of the battery 440 and supplies the converted power to the heater 450. In addition, when the aerosol-generating device 400 generates the aerosol by an induction heating method, the aerosol-generating device 400 further includes a DC / AC converter that converts the DC power of the battery 440 into an AC power.

[0112] 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 function by receiving power from the battery 440. Although not shown in FIG 6, the device further includes a power conversion circuit, for example, an LDO (low dropout) circuit or a voltage regulator circuit, that converts the power of the battery 440 and supplies it to each component.

[0113] In one embodiment, the heater 450 may be formed from an electrically resistive material suitable for heating, such as, but not limited to, a metal or metal alloy, including titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, etc. Additionally, the heater 450 may be implemented as, but not limited to, a metallic hot wire, a metallic hot plate having an electrically conductive track disposed thereon, a ceramic heating element, etc.

[0114] In one embodiment, heater 450 may be an inductively heated heater, for example, heater 450 may include a susceptor that generates heat via a magnetic field applied by a coil to heat the aerosol generating material.

[0115] In one embodiment, heater 450 includes multiple heaters. For example, heater 450 includes a first heater for heating the cigarette and a second heater for heating the liquid phase.

[0116] The user input unit 460 can receive information input by a user and output information to a user. For example, the user input unit 460 can be a keypad, a dome switch, a touchpad (contact type electrostatic capacitance type, pressure type resistive film type, infrared sensing type, surface ultrasonic conduction type, integral type tension measurement type, piezoelectric effect type, etc.), a jog wheel, a jog switch, etc., but is not limited thereto. In addition, although not shown in FIG. 6, the aerosol generating device 400 further includes 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 the USB interface to send and receive information or charge the battery 440.

[0117] The memory 470 is hardware for storing various data processed in the aerosol generating device 400, and may store data processed by the control unit 410 and data to be processed. The memory 470 includes 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 470 may store the operation time of the aerosol generating device 400, the maximum number of puffs, the current number of puffs, at least one temperature profile, and data on the smoking pattern of the user.

[0118] The communication unit 480 includes at least one component for communication with other electronic devices. For example, the communication unit 480 includes a short-range communication unit 482 and a wireless communication unit 484.

[0119] The short-range wireless communication unit 482 includes, but is not limited to, a Bluetooth (registered trademark) communication unit, a BLE (Bluetooth (registered trademark) Low Energy) communication unit, a Near Field Communication unit, a WLAN (Wi-Fi) communication unit, a Zigbee (registered trademark) communication unit, an IrDA (infrared Data Association) communication unit, a WFD (Wi-Fi Direct) communication unit, a UWB (ultra wideband) communication unit, an Ant+ communication unit, and the like.

[0120] The wireless communication unit 484 includes, 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. The wireless communication unit 484 may identify and authenticate the aerosol generating device 400 within the communication network using subscriber information (e.g., an International Mobile Subscriber Identity (IMSI)).

[0121] The control unit 410 can control the overall operation of the aerosol generating device 400. In one embodiment, the control unit 410 includes at least one processor. The processor may be realized by an array of multiple logic gates, or may be realized by a combination of a general-purpose microprocessor and a memory in which a program that can be executed by the microprocessor is stored. In addition, a person having ordinary skill in the art to which this embodiment belongs can understand that the processor may be realized by other forms of hardware.

[0122] 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 can control the power supply by controlling the switching of a switching element between the battery 440 and the heater 450. In a different example, the control unit 410 can control the heating directly in response to a control command from the control unit 410. A connection circuit may control the power supply to the heater 450 .

[0123] The control unit 410 analyzes the result detected by the detection unit 420 and controls the process to be executed thereafter. For example, the control unit 410 can control the power supplied to the heater 450 so as to start or end the operation of the heater 450 based on the result detected by the detection unit 420. As another example, the control unit 410 can control the amount of power supplied to the heater 450 and the time for which the power is supplied so that the heater 450 can heat up to a predetermined temperature or maintain an appropriate temperature based on the result detected by the detection unit 420.

[0124] The control unit 410 controls the output unit 430 based on the result detected by the detection unit 420. For example, when the number of puffs counted via the puff sensor 426 reaches a preset number, the control unit 410 notifies the user via at least one of the display unit 432, the haptic unit 434, and the audio output unit 436 that the aerosol generating device 400 will immediately shut down.

[0125] In one embodiment, the control unit 410 may control the time and / or amount of power supplied to the heater 450 depending on the state of the aerosol-generating article detected by the detection unit 420. For example, when the aerosol-generating article is in an overly humid state, the control unit 410 may control the time of power supply to the induction coil to increase the pre-heating time compared to when the aerosol-generating article is in a normal state.

[0126] An embodiment may also be realized in the form of a recording medium including computer executable instructions such as a program module executed by a computer. A computer readable medium may be any solvent accessible by a computer, including both volatile and non-volatile media, and both separate and non-separate media. Also, a computer readable medium may include both a computer storage medium and a communication medium. A computer storage medium includes both volatile and non-volatile, separate and non-separate media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules, or other data. A communication medium typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, or other transmission mechanism, and includes any information delivery medium.

[0127] Figure 7 is a perspective view of an aerosol generation system according to an embodiment. Figure 8 is a partial cross-sectional view of the aerosol generation system according to an embodiment, taken along line AA. Figure 9 is a partial cross-sectional view of the aerosol generation system according to an embodiment, taken along line AA.

[0128] 7-9, an aerosol-generating system 500 includes an aerosol-generating article 501 and an aerosol-generating device 502 configured to generate an aerosol from the aerosol-generating article 501.

[0129] The aerosol-generating device 502 may include a first housing 510 (e.g., an outer housing). The first housing 510 includes a first surface 510A, a second surface 510B opposite the first surface 510A, and a side surface 510C between the first surface 510A and the second surface 510B. For example, the aerosol-generating article 501 may be inserted into the first housing 510 through an opening formed in the first surface 510A.

[0130] The aerosol generating device 502 at least partially contains the aerosol-generating article 501. The second housing 520 may be disposed within the first housing 510.

[0131] The second housing 520 includes a hollow portion 521 and a body portion 522 that defines the hollow portion 521 .

[0132] The hollow portion 521 may be configured to at least partially contain the aerosol-generating article 501. The hollow portion 521 includes an airflow channel P defined between the hollow portion 521 and the aerosol-generating article 501. Air external to the first housing 510 may flow through the airflow channel P to one end of the aerosol-generating article 501 (e.g., the bottom end or the device end), through at least one segment of the aerosol-generating article 501, and to the other end of the aerosol-generating article 501 (e.g., the top end or the mouth end).

[0133] The body portion 522 includes a side portion 522A and a bottom portion 522B. The side portion 522A and the bottom portion 522B are connected to each other. The side portion 522A and the bottom portion 522B may form a hollow portion 521. An airflow channel P may be formed between an inner side surface of the side portion 522A and an outer side surface of the aerosol-generating article 501, and between a bottom surface of the bottom portion 522B and an outer end surface of the aerosol-generating article 501.

[0134] The body portion 522 includes a cavity 524 disposed at the bottom 522B. The cavity 524 may include a first cavity surface 524A (e.g., an upper surface) facing the hollow portion 521, a second cavity surface 524B (e.g., a lower surface) opposite the first cavity surface 524A, and a third cavity surface 524C (e.g., a side surface) between the first cavity surface 524A and the second cavity surface 524B.

[0135] The first cavity surface 524A may be at least partially open to the hollow portion 521. The first cavity surface 524A may be substantially coplanar with a bottom surface of the bottom portion 522B. The first cavity surface 524A may be coincident with the bottom surface of the bottom portion 522B.

[0136] The second cavity surface 524B may be at least partially open to the exterior of the second housing 520. The second cavity surface 524B may be substantially coplanar with the exterior surface of the bottom portion 522B. The second cavity surface 524B may be coincident with the exterior surface of the bottom portion 522B.

[0137] The third cavity side 524C may be closed, so that material (e.g., air) may flow through the first cavity side 524A and the second cavity side 524B, but cannot flow through the third cavity side 524C.

[0138] The cavity 524 includes a chamber surface 524D between the first cavity surface 524A and the third cavity surface 524C. The chamber surface 524D may have a substantially linear profile. The chamber surface 524D may have a curved profile.

[0139] Cavity 524 may have a cross-sectional area that is substantially the same as or smaller than the cross-sectional area of ​​hollow portion 521 .

[0140] The aerosol generating device 502 includes a membrane 530. The membrane 530 may be configured to seal the first cavity surface 524A. The membrane 530 may be deformed in response to conditions of the external environment. For example, the membrane 530 may have a shape that changes with pressure.

[0141] The membrane 530 may be disposed on the bottom 522B. The membrane 530 includes a first fixed portion 530A fixed to a first portion (e.g., a left portion) of the bottom 522B, a second fixed portion 530B fixed to a second portion (e.g., a right portion) opposite to the first portion of the bottom 522B, and a deformation portion 530C disposed between the first fixed portion 530A and the second fixed portion 530B.

[0142] The first fixing portion 530A and the second fixing portion 530B may be configured to be substantially undeformable. The first fixing portion 530A is attached to a first portion of the bottom portion 522B. Buried The second fixing portion 530B may be fixed to the second portion of the bottom portion 522B. Buried Good too.

[0143] The first fixing portion 530A, the second fixing portion 530B, and the deforming portion 530C may be seamlessly connected together.

[0144] The first fixing portion 530A, the second fixing portion 530B, and the deformation portion 530C may include an elastic material. Alternatively, the first fixing portion 530A and the second fixing portion 530B may include a non-elastic material, and the deformation portion 530C may include an elastic material.

[0145] The aerosol generating device 502 includes a pressure sensor 540. The pressure sensor 540 may be configured to detect a pressure in the cavity 524 (e.g., the second pressure P2).

[0146] The pressure sensor 540 is configured to substantially seal the second cavity surface 524B. The second cavity surface 524B may be an open area on the lower surface of the bottom 522B to allow access to the cavity 524. The second cavity surface 524B may have a shape (e.g., a stepped shape) that is complementary to the shape of the lower surface of the bottom 522B. The membrane 530, the third cavity surface 524C, and the pressure sensor 540 may form at least a portion of the cavity 524 as a sealed space. The inflow of a substance (e.g., an aerosol) in the hollow portion 521 into the sealed space is blocked by the membrane 530. Since the substance does not flow into the pressure sensor 540, the performance of the pressure sensor 540 can be guaranteed.

[0147] A pressure sensor 540 is provided on or adjacent to the second cavity side 524B. The pressure sensor 540 may contact the third cavity side 524C.

[0148] 8 shows the aerosol generating system 500 with the aerosol-generating article 501 contained in the hollow portion 521 and no puffing being performed by the user. The space in the hollow portion 521 has a first pressure P1. The space in the cavity 524 sealed by the membrane 530 and the pressure sensor 540 has a second pressure P2. The spaces form a pressure equilibrium. The membrane 530 can retain its original shape (e.g., substantially planar) and does not substantially deform (e.g., substantially planar).

[0149] FIG. 9 shows the aerosol generating system 500 in a state in which the aerosol-generating article 501 is accommodated in the hollow portion 521 and a puff is performed by a user. When a puff is performed by a user, air flows into the aerosol-generating article 501 through the airflow channel P. The space of the hollow portion 521 has a reduced first pressure P1'. To maintain pressure balance, the deformation portion 530C is deformed convexly toward the first cavity surface 524A. The space of the cavity 524 sealed by the membrane 530 and the pressure sensor 540 has a changed second pressure P2'. The pressure sensor 540 can detect the second pressure P2 before the puff and the second pressure P2' after the puff, respectively. The processor (e.g., the control unit 12 or 410) can detect the user's puff based on the pressure difference between the second pressures P2 and P2' before and after the puff, and perform various control commands based on the detection.

[0150] The features and aspects of any embodiment described above may be combined with the features and aspects of any other embodiment unless this results in an obvious technical conflict.

Claims

1. a housing including a hollow portion configured to accommodate an aerosol-generating article and a body portion defining the hollow portion, the body portion including side portions and a bottom, a cavity disposed in the bottom, the cavity having a first cavity surface facing the hollow portion in a direction in which the aerosol-generating article is accommodated, a second cavity surface opposite the first cavity surface, and a third cavity surface between the first cavity surface and the second cavity surface in the direction in which the aerosol-generating article is accommodated; a membrane sealing the cavity adjacent the first cavity surface; a pressure sensor configured to seal the cavity and sense pressure in the cavity adjacent the second cavity surface; An aerosol generating device comprising:

2. The aerosol generating device of claim 1 , wherein the membrane is configured to deform convexly toward the first cavity surface.

3. The aerosol generating device of claim 1 , wherein the membrane is disposed between the first cavity surface and the second cavity surface.

4. The aerosol generating device of claim 1 , wherein the membrane comprises an elastic material.

5. The aerosol generating device of claim 1 , wherein the membrane is at least partially embedded in the body portion.

6. The aerosol generating device of claim 1 , wherein the pressure sensor is provided on the second cavity surface.

7. The aerosol generating device of claim 1 , wherein the cavity further comprises a chamber surface between the first cavity surface and the third cavity surface.

8. 2. The aerosol generating device of claim 1, wherein the base includes a bottom surface, and the first cavity surface is substantially coplanar with the bottom surface.

9. 2. The aerosol generating device of claim 1, wherein the cross-sectional area of ​​the cavity is substantially the same as or smaller than the cross-sectional area of ​​the hollow portion.

10. an aerosol-generating article; an aerosol generating device configured to generate an aerosol from the aerosol-generating article; Including, a housing including a hollow portion configured to accommodate an aerosol-generating article and a body portion defining the hollow portion, the body portion including side portions and a bottom, a cavity disposed in the bottom, the cavity having a first cavity surface facing the hollow portion in a direction in which the aerosol-generating article is accommodated, a second cavity surface opposite the first cavity surface, and a third cavity surface between the first cavity surface and the second cavity surface in the direction in which the aerosol-generating article is accommodated; a membrane sealing the cavity adjacent the first cavity surface; a pressure sensor configured to seal the cavity and sense pressure in the cavity adjacent the second cavity surface; 1. An aerosol generating system comprising:

11. The aerosol generation system of claim 10 , wherein the membrane is configured to be deformed when a puff is generated.

12. 12. The aerosol generation system of claim 11, wherein the membrane is configured to deform convexly toward the first cavity surface when the puff is generated.

13. The aerosol generating system of claim 10 , wherein the aerosol generating device further comprises a processor configured to detect a puff based on a pressure change in at least a portion of the cavity below the membrane.

14. 11. The aerosol generating system of claim 10, wherein the hollow portion includes an airflow channel formed between the aerosol generating article and the body portion.

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