Aerosol generating device and method of operation thereof

Abstract

An aerosol generating device according to an embodiment includes a case including an accommodation passage into which a cigarette is inserted, a cover coupled to the case, a heater for heating the cigarette, a humidity sensing sensor disposed on an upper surface of the cover, and a control unit that compares the amount of moisture sensed by the humidity sensing sensor with a preset threshold value to determine the humidity state of the cigarette.

Description

[Technical Field]

[0001] The present invention relates to an aerosol generating device and an operating method thereof, and more particularly to an aerosol generating device and an operating method thereof that can provide an operating mode corresponding to the humidity of a cigarette sensed by a humidity sensor. [Background technology]

[0002] Recently, there has been an increasing demand for smoking methods that can replace conventional cigarettes. For example, there has been an increasing demand for methods that generate aerosol by heating an aerosol-generating substance in a cigarette, rather than by burning a cigarette. As a result, research into heated cigarettes or heated aerosol generators has been actively conducted.

[0003] On the other hand, moisture has a higher specific heat than air and a higher heat capacity than air at the same temperature. Therefore, when a user inhales an aerosol with a high moisture content, the user may feel a higher heat than when inhaling air at the same temperature. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides an aerosol generating device and method of operation that distinguishes between regular cigarettes and over-moistened cigarettes.

[0005] The present invention provides an aerosol generating device and method of operation that includes operating modes corresponding to both regular cigarettes and over-moistened cigarettes.

[0006] The problems to be solved through the embodiments are not limited to the problems described above, and problems not mentioned will be clearly understood by a person having ordinary skill in the art to which the embodiments pertain from this specification and the accompanying drawings. [Means for solving the problem]

[0007] An aerosol generating device according to one embodiment includes a case including a receiving passage into which a cigarette is inserted, a cover coupled to the case, a heater for heating the cigarette, a humidity sensor disposed on the upper surface of the cover, and a control unit for comparing the amount of moisture detected by the humidity sensor with a preset threshold value to determine the humidity state of the cigarette.

[0008] According to one embodiment, a method for operating an aerosol generating device includes the steps of: heating a cigarette with a heater; determining a humidity state of the cigarette by comparing a moisture amount detected by a humidity detecting sensor with a preset threshold; and operating the heater according to a temperature profile corresponding to the determined humidity state of the cigarette. The aerosol generating device includes a case having a receiving passage therein into which the cigarette is inserted, and a cover coupled to the case and having an external hole overlapping the receiving passage in a thickness direction, and the humidity detecting sensor is disposed on an upper surface of the cover. [Effects of the Invention]

[0009] The aerosol generating device and its operating method according to various embodiments of the present disclosure can distinguish between regular cigarettes and overly moist cigarettes using a humidity sensor.

[0010] Furthermore, the aerosol generating device and its operating method according to various embodiments of the present disclosure may provide operating modes corresponding to both regular cigarettes and over-humidified cigarettes.

[0011] The effects of the embodiments are not limited to those described above, and any unmentioned effects will be clearly understood by a person having ordinary skill in the art to which the embodiments pertain from this specification and the accompanying drawings. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram showing an example in which a cigarette is inserted into an aerosol generating device. [Figure 2] 1 is a diagram showing an example in which a cigarette is inserted into an aerosol generating device. [Figure 3] 1 is a diagram showing an example in which a cigarette is inserted into an aerosol generating device. [Figure 4] 1 is a drawing showing an example of a cigarette. [Figure 5] 1 is a drawing showing an example of a cigarette. [Figure 6] FIG. 10 is a block diagram illustrating an aerosol generating device according to another embodiment. [Figure 7A] 1 is a perspective view showing the appearance of an aerosol generating device according to one embodiment of the present invention. [Figure 7B] 7B is a perspective view showing the operating state of the aerosol generating device according to the embodiment shown in FIG. 7A with some components separated. [Figure 8A] FIG. 7C is a top view of the cover shown in FIGS. 7A and 7B. [Figure 8B] FIG. 7C is a top view of the cover shown in FIGS. 7A and 7B. [Figure 9A] 1 is a cross-sectional view illustrating a capacitance type humidity sensor; [Figure 9B] FIG. 2 is a cross-sectional view illustrating an electrical resistance type humidity sensor. [Figure 9C] FIG. 2 is a cross-sectional view illustrating an optical humidity sensor. [Figure 10] 10 is a graph illustrating a temperature profile. [Figure 11] 1 is a flowchart illustrating a method of operating an aerosol generating device according to one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] The terms used in the embodiments are currently commonly used terms, and are selected as much as possible while taking into consideration the functions of the present invention. However, this may vary depending on the intentions or precedents of engineers 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 invention. Therefore, the terms used in the present invention must be defined based on the meanings of the terms and the overall content of this disclosure, rather than simply the names of the terms.

[0014] Throughout the specification, when a part "includes" a certain element, it does not mean that it excludes other elements and may further include other elements, unless otherwise specified. Furthermore, terms such as "... unit" and "... module" used in the specification mean a unit that processes at least one function or operation, and may be realized by hardware or software, or by a combination of hardware and software.

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily understand and practice the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments set forth herein.

[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0017] 1 to 3 are diagrams showing an example in which a cigarette is inserted into an aerosol generating device.

[0018] 1, the aerosol generator 1 includes a battery 11, a control unit 12, and a heater 13. 2 and 3, the aerosol generator 1 further includes a vaporizer 14. A cigarette 2 can be inserted into the internal space of the aerosol generator 1.

[0019] The aerosol generating device 1 shown in Figures 1 to 3 includes components related to this embodiment. Therefore, a person skilled in the art will understand that the aerosol generating device 1 further includes other general components in addition to the components shown in Figures 1 to 3.

[0020] 2 and 3 show that the aerosol generating device 1 includes the heater 13, but the heater 13 may be omitted if necessary.

[0021] In Fig. 1, the battery 11, the control unit 12, and the heater 13 are arranged in a row. In Fig. 2, the battery 11, the control unit 12, the vaporizer 14, and the heater 13 are arranged in a row. In Fig. 3, the vaporizer 14 and the heater 13 are arranged in parallel. However, the internal structure of the aerosol generation device 1 is not limited to that shown in Figs. 1 to 3. That is, 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.

[0022] When the cigarette 2 is inserted into the aerosol generating device 1, the aerosol generating device 1 may activate 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 cigarette 2 and is delivered to the user.

[0023] If necessary, the aerosol generation device 1 can heat the heater 13 even when the cigarette 2 is not inserted in the aerosol generation device 1 .

[0024] The battery 11 supplies power used for operating the aerosol generation device 1. For example, the battery 11 can supply power to heat the heater 13 or the vaporizer 14, and can also supply power necessary for operating the control unit 12. The battery 11 can also supply power necessary for operating the display, sensors, motors, and the like provided in the aerosol generation device 1.

[0025] The control unit 12 controls the overall operation of the aerosol generation 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 generation device 1. The control unit 12 can also check the status of each component of the aerosol generation device 1 and determine whether the aerosol generation device 1 is in an operable state.

[0026] The control unit 12 includes at least one processor. The processor may be implemented by an array of multiple logic gates, such as a general-purpose microprocessor and a memory storing a program executed by the microprocessor. Those skilled in the art will understand that the processor may also be implemented by other types of hardware.

[0027] The heater 13 may 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 may be located outside the cigarette. Thus, the heated heater 13 may increase the temperature of the aerosol generating material within the cigarette.

[0028] The heater 13 may also be an electrical resistance heater. For example, the heater 13 may include a conductive track, and the heater 13 may be heated by passing a current through the conductive track. However, the heater 13 is not limited to the above example, and may be any heater that can be heated to a desired temperature. Here, the desired temperature may be preset in the aerosol generation device 1, or may be set to a desired temperature by a user.

[0029] Meanwhile, as another example, the heater 13 may be an induction heater. Specifically, the heater 13 may include a conductive coil for heating the cigarette by induction heating, and the cigarette may include a susceptor heated by the induction heater.

[0030] For example, the heater 13 may include a tubular heating element, a plate-shaped heating element, a needle-shaped heating element, or a rod-shaped heating element, and may heat the inside or outside of the cigarette 2 depending on the shape of the heating element.

[0031] Furthermore, a plurality of heaters 13 may be arranged in the aerosol generating device 1. In this case, the plurality of heaters 13 may be arranged so as to be inserted inside the cigarette 2, or may be arranged outside the cigarette 2. Furthermore, some of the plurality of heaters 13 may be arranged so as to be inserted inside the cigarette 2, and the rest may be arranged outside the cigarette 2. Furthermore, the shape of the heater 13 is not limited to the shapes illustrated in Figs. 1 to 3, and various shapes may be produced.

[0032] The vaporizer 14 heats the liquid composition to generate an aerosol, which can be transmitted to the user through the cigarette 2. That is, the aerosol generated by the vaporizer 14 travels 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.

[0033] For example, the vaporizer 14 may include, but is not limited to, a liquid storage unit, a liquid transfer means, and a heating element. For example, the liquid storage unit, the liquid transfer means, and the heating element may be included in the aerosol generation device 1 as independent modules.

[0034] The liquid storage unit can store a liquid composition. For example, the liquid composition can 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 can be configured to be detachable from / attachable to the vaporizer 14, or can be configured as an integral part of the vaporizer 14.

[0035] For example, the liquid composition may contain water, solvent, ethanol, plant extract, fragrance, flavoring, or vitamin mixture. Flavoring may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit fragrance components, etc. Flavoring may include components that provide a variety of flavors or tastes to the user. The vitamin mixture may include, but is not limited to, a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E. The liquid composition may also include an aerosol-forming agent, such as glycerin and propylene glycol.

[0036] The liquid transfer means can transfer the liquid composition of the liquid reservoir to the heating element, and can be, for example, but not limited to, a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0037] 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, or the like. The heating element may also be made of a conductive filament such as a nichrome wire and arranged in a structure wound around the liquid transfer means. The heating element is heated by supplying an electric current and transfers heat to the liquid composition in contact with the heating element, thereby heating the liquid composition. As a result, an aerosol may be generated.

[0038] For example, the vaporizer 14 may also be referred to as, but is not limited to, a cartomizer or an atomizer.

[0039] Meanwhile, the aerosol generator 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 generator 1 may include a display capable of outputting visual information and / or a motor for outputting tactile information. The aerosol generator 1 may also include at least one sensor (such as a puff sensor, a temperature sensor, or a cigarette insertion sensor). The aerosol generator 1 may also be constructed so that external air can flow in or internal gas can flow out even when a cigarette 2 is inserted.

[0040] 1 to 3, the aerosol generation 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 generation device 1. Alternatively, the heater 13 may heat the aerosol generation device 1 when the cradle and the aerosol generation device 1 are combined.

[0041] The cigarette 2 may be similar to a typical combustion cigarette. For example, the cigarette 2 may be divided into a first portion containing an aerosol-generating material and a second portion containing a filter or the like. Alternatively, the second portion of the cigarette 2 may also contain an aerosol-generating material. For example, the aerosol-generating material in granular or encapsulated form may be inserted into the second portion.

[0042] The entire first part may be inserted into the aerosol generation 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 generation device 1, or the entire first part and a part of the second part may be inserted into the aerosol generation device 1. A user inhales the aerosol while holding the second part in their mouth. In this case, the aerosol is generated by external air passing through the first part, and the generated aerosol passes through the second part and is delivered to the user's mouth.

[0043] As one example, external air may be introduced through at least one air passage formed in the aerosol generation device 1. For example, the opening and / or closing of the air passage formed in the aerosol generation 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, external air may be introduced into the cigarette 2 through at least one hole formed in the surface of the cigarette 2.

[0044] An example of the cigarette 2 will be described below with reference to FIGS.

[0045] 4 and 5 are drawings showing examples of cigarettes.

[0046] Referring to Figure 4, the cigarette 2 includes a tobacco rod 21 and a filter rod 22. Although Figure 4 illustrates the filter rod 22 as a single segment, this is not limiting. That is, the filter rod 22 may be composed of multiple segments. For example, the filter rod 22 may include a segment that cools the aerosol and a segment that filters predetermined components contained in the aerosol. If necessary, the filter rod 22 may further include at least one segment that performs another function.

[0047] The cigarette 2 has a diameter in the range of 5 mm to 9 mm and a length of, but not limited to, approximately 48 mm. For example, the tobacco rod 21 may have a length of, but not limited to, approximately 12 mm, the first segment of the filter rod 22 may have a length of, but not limited to, approximately 10 mm, the second segment of the filter rod 22 may have a length of, but not limited to, approximately 14 mm, and the third segment of the filter rod 22 may have a length of, but not limited to, approximately 12 mm.

[0048] The cigarette 2 may be wrapped using at least one wrapper 24. The wrapper 24 may have at least one hole formed therein, allowing external air to flow in or internal gas to flow out. As an example, the cigarette 2 may be wrapped using a single wrapper 24. As another example, the cigarette 2 may be wrapped by overlapping two or more wrappers 24. For example, the tobacco rod 21 may be wrapped using a first wrapper 241, and the filter rod 22 may be wrapped using wrappers 242, 243, and 244. The entire cigarette 2 may then be rewrapped using a single wrapper 245. If the filter rod 22 is made up of multiple segments, each segment may be wrapped using a wrapper 242, 243, and 244.

[0049] The first wrapper 241 and the second wrapper 242 may be made of general filter wrapping paper. For example, the first wrapper 241 and the second wrapper 242 may be porous or non-porous wrapping paper. The first wrapper 241 and the second wrapper 242 may also be made of oil-resistant paper and / or aluminum-clad wrapping material.

[0050] The third wrapper 243 may be made of hard wrapping paper. For example, the basis weight of the third wrapper 243 is 88 g / m 2 ~96g / m 2 and preferably 90 g / m 2 ~94g / m 2 The thickness of the third wrapper 243 may be within the range of 120 μm to 130 μm, and is preferably 125 μm.

[0051] The fourth wrapper 244 may be made of oil-resistant hard wrapping paper. For example, the basis weight of the fourth wrapper 244 is 88 g / m 2 ~96g / m 2 and preferably 90 g / m 2 ~94g / m 2 The thickness of the fourth wrapper 244 may be within the range of 120 μm to 130 μm, and is preferably 125 μm.

[0052] The fifth wrapper 245 may be made of sterilized paper (MFW). Here, sterilized paper (MFW) refers to 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 is 57 g / m 2 ~63g / m 2 and preferably within the range of 60 g / m 2 The thickness of the fifth wrapper 245 is in the range of 64 μm to 70 μm, and is preferably 67 μm.

[0053] A predetermined substance may be added to the fifth wrapper 245. An example of the predetermined substance may be, but is not limited to, silicon. For example, silicon has properties such as heat resistance (i.e., small changes due to temperature), oxidation resistance (i.e., resistance to various chemicals), water repellency, and electrical insulation. However, even if it is not silicon, any substance having the above-mentioned properties may be applied (or coated) to the fifth wrapper 245 without limitation.

[0054] The fifth wrapper 245 can prevent the cigarette 2 from burning. For example, if the tobacco rod 210 is heated by the heater 13, the cigarette 2 may burn. Specifically, if the temperature of any one of the substances contained in the tobacco rod 310 rises above the ignition point, the cigarette 2 may burn. Even in this case, the fifth wrapper 245 can prevent the cigarette 2 from burning because it contains a non-combustible substance.

[0055] Furthermore, the fifth wrapper 245 can prevent the aerosol generation device 1 from being contaminated by a substance generated in the cigarette 2. A liquid substance can be generated in the cigarette 2 when the user puffs. For example, a liquid substance (e.g., moisture) can be generated when the aerosol generated in the cigarette 2 is cooled by external air. By wrapping the cigarette 2 with the fifth wrapper 245, the liquid substance generated in the cigarette 2 can be prevented from leaking outside the cigarette 2.

[0056] The tobacco rod 21 includes an aerosol-forming material. For example, the aerosol-forming material may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited to these. 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 also be added to the tobacco rod 21 by being sprayed onto the tobacco rod 21.

[0057] The tobacco rod 21 may be manufactured in various ways. For example, the tobacco rod 21 may be manufactured in the form of a sheet or strand. Alternatively, the tobacco rod 21 may be manufactured from shredded tobacco, which is a tobacco sheet cut into small pieces. The tobacco rod 21 may be surrounded by a thermally conductive material. For example, the thermally conductive material may be a metal foil such as aluminum foil, but is not limited to such. For example, the thermally conductive material surrounding the tobacco rod 21 may uniformly distribute heat transferred to the tobacco rod 21, improving the thermal conductivity of the tobacco rod and thereby improving the tobacco taste. The thermally conductive material surrounding the tobacco rod 21 may also function as a susceptor heated by an induction heater. Although not shown in the drawings, the tobacco rod 21 may further include an additional susceptor in addition to the thermally conductive material surrounding the exterior.

[0058] The filter rod 22 is also a cellulose acetate filter. However, the shape of the filter rod 22 is not limited. For example, the filter rod 22 may be a cylindrical rod or a tubular rod with a hollow interior. The filter rod 22 may also be a recessed rod. If the filter rod 22 is composed of multiple segments, at least one of the multiple segments may be manufactured to have a different shape.

[0059] The first segment of the filter rod 22 may also be a cellulose acetate filter. For example, the first segment may be a tubular structure having a hollow interior. When the heater 13 is inserted through the first segment, it prevents the internal material of the tobacco rod 21 from being pushed back and may also have a cooling effect on the aerosol. The diameter of the hollow interior of the first segment may be, but is not limited to, a suitable diameter within the range of 2 mm to 4.5 mm.

[0060] 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 is 10 mm, but is not limited thereto.

[0061] The hardness of the first segment can be adjusted by adjusting the amount of plasticizer used during manufacturing of the first segment. The first segment can also be manufactured by inserting a structure such as a film or tube made of the same or different material into the interior (e.g., hollow) of the first segment.

[0062] 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.

[0063] The length or diameter of the second segment may be determined in various ways depending on the shape of the cigarette 2. For example, the length of the second segment may be appropriately set within the range of 7 mm to 20 mm. Preferably, the length of the second segment is approximately 14 mm, but is not limited to this.

[0064] The second segment can also be made by weaving polymer fibers. In this case, a fragrance liquid can be applied to the polymer fibers. Alternatively, the second segment can be made by weaving a separate fiber coated with a fragrance liquid and a polymer fiber together. Alternatively, the second segment can be formed from a crimped polymer sheet.

[0065] 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.

[0066] When the second segment is formed from woven polymer fibers or a crimped polymer sheet, the second segment may include one or more longitudinally extending channels, where channel refers to a passageway through which a gas (e.g., air or aerosol) passes.

[0067] For example, the second segment of crimped polymer sheet can be formed from a material having a thickness between about 5 μm and about 300 μm, e.g., between about 10 μm and about 250 μm, and the total surface area of ​​the second segment can be less than about 300 mm 2 / mm and approximately 1000mm 2 The aerosol cooling element has a surface area of ​​approximately 10 mm 2 / mg and about 100mm 2 / mg of material.

[0068] The second segment may include a thread containing a volatile flavor component, such as, but not limited to, menthol. For example, the thread may be loaded with a sufficient amount of menthol to provide 1.5 mg or more of menthol in the second segment.

[0069] The third segment of the filter rod 22 is also a cellulose acetate filter. The length of the third segment may be suitably within the range of 4 mm to 20 mm. For example, the length of the third segment may be approximately 12 mm, but is not limited to this.

[0070] During the manufacturing process of the third segment, the third segment may be manufactured 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 may be 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 may be achieved.

[0071] The filter rod 22 may also include at least one capsule 23. The capsule 23 may function to generate a flavor and may also function to generate an aerosol. For example, the capsule 23 may have a structure that encases a liquid containing a flavoring agent with a coating. The capsule 23 may have, but is not limited to, a spherical or cylindrical shape.

[0072] 5, the cigarette 3 may further include a front-end plug 33. The front-end plug 33 may be located on one side of the tobacco rod 31 opposite the filter rod 32. The front-end plug 33 may prevent the tobacco rod 31 from detaching to the outside and may prevent aerosol liquefied from the tobacco rod 31 during smoking from flowing into the aerosol generating device (1 in FIGS. 1 to 3).

[0073] Filter rod 32 may include a first segment 321 and a second segment 322. Here, first segment 321 may correspond to the first segment of filter rod 22 of FIG. 4, and second segment 322 may correspond to the third segment of filter rod 22 of FIG. 4.

[0074] The diameter and overall length of cigarette 3 may correspond to the diameter and overall length of cigarette 2 of Figure 4. For example, but not limited to, the length of front end plug 33 may be about 7 mm, the length of tobacco rod 31 may be about 15 mm, the length of first segment 321 may be about 12 mm, and the length of second segment 322 may be about 14 mm.

[0075] The cigarette 3 may be wrapped by at least one wrapper 35. The wrapper 35 may have at least one hole formed therein through which external air can flow in or internal gas can flow out. For example, the front end plug 33 may be wrapped by a first wrapper 351, the tobacco rod 31 may be wrapped by a second wrapper 352, the first segment 321 may be wrapped by a third wrapper 353, and the second segment 322 may be wrapped by a fourth wrapper 354. The entire cigarette 3 may then be rewrapped by a fifth wrapper 355.

[0076] In addition, 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 the area surrounding the tobacco rod 31. The perforation 36 may serve to transfer heat generated by the heater 13 shown in Figures 2 and 3 to the interior of the tobacco rod 31.

[0077] The second segment 322 may also include at least one capsule 34. The capsule 34 may function to generate a flavor and may also function to generate an aerosol. For example, the capsule 34 may have a structure that encases a liquid containing a flavoring agent with a coating. The capsule 34 may have, but is not limited to, a spherical or cylindrical shape.

[0078] The first wrapper 351 may be a general filter wrapper with a metal foil such as aluminum foil bonded to it. For example, the total thickness of the first wrapper 351 is within the range of 45 μm to 55 μm, and preferably 50.3 μm. The thickness of the metal foil of the first wrapper 351 is within the range of 6 μm to 7 μm, and preferably 6.3 μm. The basis weight of the first wrapper 351 is 50 g / m 2 ~55g / m 2 and preferably within the range of 53 g / m 2 It is also.

[0079] The second wrapper 352 and the third wrapper 353 may be made of common filter wrapping paper, for example, the second wrapper 352 and the third wrapper 353 may be porous or non-porous wrapping paper.

[0080] For example, the porosity of the second wrapper 352 is 35000 CU, but is not limited thereto. The thickness of the second wrapper 352 is within the range of 70 μm to 80 μm, and preferably 78 μm. The basis weight of the second wrapper 352 is 20 g / m 2 ~25g / m 2 and preferably 23.5 g / m 2 It is also.

[0081] For example, the porosity of the third wrapper 353 is 24000 CU, but is not limited thereto. The thickness of the third wrapper 353 is within a range of 60 μm to 70 μm, and preferably 68 μm. The basis weight of the third wrapper 353 is 20 g / m 2 ~25g / m 2 and preferably 21 g / m 2 It is also.

[0082] The fourth wrapper 354 may be made of PLA laminated paper. Here, PLA laminated paper refers to a triple layer of paper including a paper layer, a PLA layer, and another paper layer. For example, the thickness of the fourth wrapper 354 is within the range of 100 μm to 120 μm, and preferably 110 μm. The basis weight of the fourth wrapper 354 is 80 g / m 2 ~100g / m 2 and preferably 88 g / m 2 It is also.

[0083] The fifth wrapper 355 may be made of sterilized paper (MFW). Here, sterilized paper (MFW) refers to paper specially manufactured to have improved tensile strength, water resistance, smoothness, etc. compared to general paper. For example, the basis weight of the fifth wrapper 355 is 57 g / m 2 ~63g / m 2 and preferably within the range of 60 g / m 2The thickness of the fifth wrapper 355 is in the range of 64 μm to 70 μm, and is preferably 67 μm.

[0084] A predetermined substance may be added to the fifth wrapper 355. An example of the predetermined substance may be, but is not limited to, silicon. For example, silicon has properties such as heat resistance (i.e., small changes due to temperature), oxidation resistance (i.e., resistance to various chemicals), water repellency, and electrical insulation. However, even if it is not silicon, any substance having the above-mentioned properties may be applied (or coated) to the fifth wrapper 355 without limitation.

[0085] The front end plug 33 may be made of cellulose acetate. For example, the front end plug 33 may be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. The monodenier of the filaments constituting the cellulose acetate tow may be in the range of 1.0 to 10.0, preferably in the range of 4.0 to 6.0. More preferably, the monodenier of the filaments constituting the front end plug 33 is 5.0. The cross section of the filaments constituting the front end plug 33 may be Y-shaped. The total denier of the front end plug 33 may be 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 front end plug 33 is 28,000.

[0086] Also, if necessary, the front end plug 33 includes at least one channel, and the cross-sectional shape of the channel can be made various.

[0087] The tobacco rod 31 may correspond 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.

[0088] The first segment 321 may be made of cellulose acetate. For example, the first segment may be a tubular structure having 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 front end plug 33.

[0089] The second segment 322 may be made of cellulose acetate. The monodenier 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 monodenier of the filaments of the second segment 322 is 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.

[0090] FIG. 6 is a block diagram showing an aerosol generating device according to another embodiment.

[0091] The aerosol generating device 600 may include a control unit 610, a sensing unit 620, an output unit 630, a battery 640, a heater 650, a user input unit 660, a memory 670, and a communication unit 680. However, the internal structure of the aerosol generating device 600 is not limited to that shown in Fig. 6. That is, a person skilled in the art of this embodiment would understand 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 600.

[0092] The sensing unit 620 can sense the state of the aerosol generating device 600 or the state around the aerosol generating device 600 and transmit the sensed information to the control unit 610. Based on the sensed information, the control unit 610 can control the aerosol generating device 600 to perform various functions such as controlling the operation of the heater 650, restricting smoking, determining whether an aerosol product (e.g., cigarette, cartridge, etc.) is inserted, and displaying notifications.

[0093] The sensing unit 620 may include at least one of a temperature sensor 622, an insertion sensor 624, a puff sensor 626, and a humidity sensor 628, but is not limited thereto.

[0094] The temperature sensor 622 may sense the temperature to which the heater 650 (or the aerosol-generating substance) is heated. The aerosol-generating device 600 may include a separate temperature sensor that senses the temperature of the heater 650, or the heater 650 itself may function as a temperature sensor. Alternatively, the temperature sensor 622 may be disposed around the battery 640 to monitor the temperature of the battery 640.

[0095] The insertion detection sensor 624 may detect the insertion and / or removal of an aerosol product article. For example, the insertion detection sensor 624 may 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 may detect a signal change due to the insertion and / or removal of an aerosol product article.

[0096] The puff sensor 626 may sense a user's puff based on various physical changes in the airflow passage or channel, such as a temperature change, a flow change, a voltage change, or a pressure change.

[0097] The humidity sensor 628 may detect the amount of moisture contained in a cigarette (see 2 in FIG. 2). Over-humidified cigarettes evaporate more moisture when heated than regular cigarettes. As a result, condensation may occur around the location of the over-humidified cigarette. According to one embodiment, the humidity sensor 628 may be disposed in a position in the aerosol generating device 600 where condensation is likely to occur. For example, the humidity sensor 628 may be disposed around an external hole (1002p in FIG. 7A) overlapping the receiving passage (1004h in FIG. 7A) in the thickness direction of the aerosol generating device 600, or on the door (1003 in FIG. 7A). The humidity sensor 628 may detect the amount of moisture on the door. For example, the humidity sensor 628 may be any one of an electrical resistance sensor, a capacitance sensor, and an optical sensor. However, this is merely an example, and the humidity sensor 628 is not limited thereto.

[0098] The sensing unit 620 may further include at least one of 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-described sensors (temperature sensor 622, insertion sensor 624, puff sensor 626, and humidity sensor 628). The function of each sensor can be intuitively inferred by a person skilled in the art from its name, and therefore detailed description thereof may be omitted.

[0099] The output unit 630 may output and provide to a user information related to the status of the aerosol generating device 600. The output unit 630 may include, but is not limited to, at least one of a display unit 632, a haptic unit 634, and an audio output unit 636. When the display unit 632 and the touchpad are layered to form a touch screen, the display unit 632 may be used as an input device in addition to an output device.

[0100] The display unit 632 visually provides a user with information related to the aerosol generating device 600. For example, the information related to the aerosol generating device 600 may include various information such as the charge / discharge status of the battery 640 of the aerosol generating device 600, the preheating status of the heater 650, the insertion / removal status of an aerosol generating product, or a status in which use of the aerosol generating device 600 is restricted (e.g., abnormal item detection), and the display unit 632 can output the information to the outside. The display unit 632 may be, for example, a liquid crystal display panel (LCD), an organic light emitting display panel (OLED), or the like. The display unit 632 may also be in the form of an LED light emitting element.

[0101] The haptic unit 634 converts an electrical signal into a mechanical or electrical stimulus to provide the user with tactile information related to the aerosol generating device 600. For example, the haptic unit 634 may include a motor, a piezoelectric element, or an electrical stimulation device.

[0102] The acoustic output unit 636 audibly provides the user with information related to the aerosol generation device 600. For example, the acoustic output unit 636 can convert an electrical signal into an acoustic signal and output it to the outside.

[0103] The battery 640 may supply power used for operation of the aerosol generating device 600. The battery 640 may supply power to heat the heater 650. The battery 640 may also supply power necessary for operation of other components included in the aerosol generating device 600 (e.g., the sensing unit 620, the output unit 630, the user input unit 660, the memory 670, and the communication unit 680). The battery 640 may be a rechargeable battery or a disposable battery. For example, the battery 640 may be a lithium polymer (LiPoly) battery, but is not limited thereto.

[0104] The heater 650 can heat the aerosol-generating material by receiving power from the battery 640. Although not shown in Fig. 6, the aerosol-generating device 600 may further include a power conversion circuit (e.g., a DC / DC converter) that converts the power of the battery 640 and supplies the converted power to the heater 650. Furthermore, when the aerosol-generating device 600 generates the aerosol by an induction heating method, the aerosol-generating device 600 may further include a DC / AC converter that converts the DC power of the battery 640 into AC power.

[0105] The control unit 610, the sensing unit 620, the output unit 630, the user input unit 660, the memory 670, and the communication unit 680 may perform their functions by receiving power from the battery 640. Although not shown in FIG. 6, the device may further include a power conversion circuit, for example, an LDO (low dropout) circuit or a voltage regulator circuit, that converts power from the battery 640 and supplies it to each component.

[0106] In one embodiment, heater 650 may be made of any suitable electrically resistive material. For example, suitable electrically resistive materials may be metals or metal alloys including, but not limited to, titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, etc. Heater 650 may also be embodied by, but not limited to, a metal hot wire, a metal hot plate with a conductive track disposed thereon, a ceramic heating element, etc.

[0107] In other embodiments, heater 650 is an inductive heater. For example, heater 650 may include a susceptor that generates heat via a magnetic field applied by a coil to heat the aerosol-generating material.

[0108] In one embodiment, the heater 650 may include multiple heaters. For example, the heater 650 may include a first heater for heating the cigarette and a second heater for heating the liquid.

[0109] The user input unit 660 receives information input by a user or outputs information to a user. Examples of the user input unit 660 include, but are not limited to, a keypad, a dome switch, a touchpad (a touchpad using a contact capacitance method, a pressure resistive film method, an infrared sensing method, a surface ultrasonic conduction method, an integral tension measurement method, a piezoelectric effect method, etc.), a jog wheel, a jog switch, etc. Although not shown in FIG. 6 , the aerosol generating device 600 may further include a connection interface such as a USB (universal serial bus) interface. The aerosol generating device 600 may be connected to another external device via the connection interface such as a USB interface to transmit and receive information or charge the battery 640.

[0110] The memory 670 is hardware that stores various data (e.g., a temperature profile) processed within the aerosol generating device 600 and can store data that has been processed by the control unit 610 and data to be processed by the control unit 610. The memory 670 may include at least one type of recording medium selected from the group consisting of a flash memory type, a hard disk type, a micro multimedia card type, a card-type memory (e.g., an SD or XD memory), 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 670 can store data related to the operating time of the aerosol generating device 600, the maximum number of puffs, the current number of puffs, at least one temperature profile, and the user's smoking pattern.

[0111] The communication unit 680 may include at least one component for communication with other electronic devices. For example, the communication unit 680 may include a short-range communication unit 682 and a wireless communication unit 684.

[0112] The short-range wireless communication unit 682 may include, 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, etc.

[0113] The wireless communication unit 684 may include, but is not limited to, a cellular network communication unit, an Internet communication unit, a computer network (e.g., a LAN or WAN) communication unit, etc. The wireless communication unit 684 may identify and authenticate the aerosol generating device 600 within the communication network using subscriber information (e.g., an International Mobile Subscriber Identity (IMSI)).

[0114] The control unit 610 can control the overall operation of the aerosol generating device 600. In one embodiment, the control unit 610 can include at least one processor. The processor can be implemented by an array of multiple logic gates, and can be implemented by a combination of a general-purpose microprocessor and a memory storing a program executed by the microprocessor. Those skilled in the art will understand that the present invention can also be implemented by other forms of hardware.

[0115] The control unit 610 can control the temperature of the heater 650 by controlling the supply of power from the battery 640 to the heater 650. For example, the control unit 610 can control the power supply by controlling the switching of a switching element between the battery 640 and the heater 650. In another example, a heating direct circuit can control the power supply to the heater 650 according to a control command from the control unit 610.

[0116] The control unit 610 may analyze the results sensed by the sensing unit 620 and control subsequent processing. For example, the control unit 610 may control the power supplied to the heater 650 so that the operation of the heater 650 is started or stopped based on the results sensed by the sensing unit 620. As another example, the control unit 610 may control the amount of power and the power supply time supplied to the heater 650 so that the heater 650 is heated to a predetermined temperature or maintained at an appropriate temperature based on the results sensed by the sensing unit 620.

[0117] The control unit 610 can control the output unit 630 based on the result sensed by the sensing unit 620. For example, when the number of puffs counted through the puff sensor 626 reaches a preset number, the control unit 610 notifies the user through at least one of the display unit 632, the haptic unit 634, and the audio output unit 636 that the aerosol generating device 600 will soon be shut down.

[0118] The control unit 610 can determine the humidity state of the cigarette by comparing the amount of moisture detected by the humidity detection sensor 628 with a preset threshold. The control unit 610 can operate the heater 650 according to a temperature profile corresponding to the determined humidity state of the cigarette. Hereinafter, a specific method for determining the humidity state of the cigarette using the humidity detection sensor 628 will be described in detail with reference to Figures 7A to 10.

[0119] Fig. 7A is a perspective view showing the appearance of an aerosol generating device according to one embodiment of the present invention, and Fig. 7B is a perspective view showing the operating state of the aerosol generating device according to the embodiment shown in Fig. 7A with some components separated.

[0120] 7A, the aerosol generating device 1000 may include a case 1100 and a cover 1002. The cover 1002 is coupled to one end of the case 1100, and the case 1100 and the cover 1002 together form the exterior of the aerosol generating device 1000.

[0121] The case 1100 forms part of the exterior of the aerosol generating device 1000 and serves to house and protect various components therein.

[0122] The cover 1002 and the case 1100 may be made of a plastic material that does not conduct heat well or a metal material coated with a heat-blocking material, and may be manufactured by, for example, injection molding, 3D printing, or assembling small parts manufactured by injection molding.

[0123] A holding device (not shown) for maintaining the coupled state of the cover 1002 and the case 1100 may be provided between the cover 1002 and the case 1100. The holding device may include, for example, a protrusion and a groove. A structure may be used in which the coupled state of the cover 1002 and the case 1100 is maintained by maintaining the protrusion inserted into the groove, and the protrusion is moved by an operation button that can be pressed by a user, and the protrusion is separated from the groove.

[0124] Furthermore, the holding device may include, for example, a magnet and a metal member attached to the magnet. When a magnet is used in the holding device, the magnet may be provided on one of the case 1100 and the cover 1002, and the metal member attached to the magnet may be provided on the other, or the magnet may be provided on both the case 1100 and the cover 1002.

[0125] An external hole 1002p into which a cigarette 2000 can be inserted is formed on the top surface of the cover 1002 coupled to the case 1100. A rail 1003r is also formed on the top surface of the cover 1002 at a position adjacent to the external hole 1002p. A door 1003 that is slidable along the top surface of the cover 1002 is provided on the rail 1003r. The door 1003 slides linearly along the rail 1003r.

[0126] 7A along the rail 1003r, the door 1003 functions to expose to the outside the external hole 1002p and the insertion hole 1004p, which allow the cigarette 2000 to pass through the cover 1002 and be inserted into the case 1100. The external hole 1002p of the cover 1002 functions to expose to the outside the insertion hole 1004p of the receiving passage 1004h that receives the cigarette 2000.

[0127] When the external hole 1002p is exposed to the outside by the door 1003, the user can insert the end 2000b of the cigarette 2000 into the external hole 1002p and the insertion hole 1004p, and attach the cigarette 2000 to the storage passage 1004h formed inside the cover 1002.

[0128] Although the rail 1003r has a concave groove shape, the embodiment is not limited by the shape of the rail 1003r. For example, the rail 1003r may have a convex shape and extend in a curved shape rather than a straight line.

[0129] The case 1100 is provided with a button 1009. By operating the button 1009, the operation of the aerosol generation device 1000 can be controlled.

[0130] When the cover 1002 is coupled to the case 1100, an external air inlet gap 1002g that allows air to flow into the cover 1002 is formed at the portion where the cover 1002 and the case 1100 are coupled.

[0131] Referring to FIG. 7B, with the cigarette 2000 inserted into the aerosol generating device 1000, a user can inhale the aerosol by holding the cigarette 2000 in their mouth.

[0132] The case 1100 is composed of an upper case 1100a into which the cigarette 2000 is inserted and which heats the cigarette 2000, and a lower case 1100b which supports and protects various components installed inside. Hereinafter, the term "case 1100" is meant to include both the upper case 1100a and the lower case 1100b.

[0133] The cover 1002 can be coupled to the case 1100 so as to cover the cigarette support 4 coupled to the case 1100. Furthermore, the cover 1002 can be separated from the case 1100 as needed.

[0134] 8A and 8B are top views of the cover shown in FIGS. 7A and 7B.

[0135] 7A, 8A, and 8B, the humidity sensors HS1 and HS2 can detect the amount of moisture contained in the cigarette 2000. The humidity sensors HS1 and HS2 can measure the amount of moisture based on the moisture (WT in FIG. 9A) condensed on the top surface of the cover 1002 due to heating of the cigarette 2000.

[0136] If moisture is contained in cigarette 2000, the moisture may evaporate when cigarette 2000 is heated, resulting in condensation on the upper surface of cover 1002. If cigarette 2000 contains a large amount of moisture, more moisture may evaporate than in a dry, general cigarette, resulting in more condensation on the upper surface of cover 1002. In other words, the amount of moisture condensed on the upper surface of cover 1002 is proportional to the amount of moisture contained in cigarette 2000.

[0137] According to an embodiment, the humidity sensors HS1 and HS2 may be disposed at positions in the aerosol generating device 1000 where condensation is likely to occur.

[0138] 8A, the cover 1002 may include an outer hole 1002p overlapping the receiving passage 1004h in the thickness direction. The humidity sensor HS1 may be disposed along the outer contour of the outer hole 1002p. In this case, the outer contour of the outer hole 1002p has a circular shape, and the humidity sensor HS1 has a ring shape.

[0139] However, the shape of the outer contour of the outer hole 1002p is merely an example and is not limited thereto. For example, the shape of the outer contour of the outer hole 1002p may be any one of an oval, a triangle, a rectangle, and a polygon.

[0140] The shape and arrangement of the humidity detecting sensor HS1 are merely exemplary and are not limited thereto. For example, the shape of the humidity detecting sensor HS1 may be an oval, a triangle, a rectangle, a polygon, or the like with a cavity formed in the center to correspond to the shape of the outline of the external hole 1002p. The humidity detecting sensor HS1 may also be arranged in at least one region of the upper surface of the cover 1002. That is, the humidity detecting sensor HS1 may be arranged over the entire upper surface of the cover 1002, or may be arranged in any part of the upper surface of the cover 1002.

[0141] 8B, the cover 1002 may include a door 1003 that is slidable along the top surface thereof. The humidity sensor HS2 may be disposed on the top surface of the door 1003. In this case, the top surface of the door 1003 may have a circular shape, and the humidity sensor HS2 may be formed over the entire top surface of the door 1003.

[0142] However, the shape of the upper surface of the door 1003 is merely an example and is not limited thereto. For example, the shape of the upper surface of the door 1003 may be any one of an oval, a triangle, a rectangle, and a polygon.

[0143] The shape and arrangement of the humidity sensor HS2 are merely illustrative and not limiting. For example, the shape of the humidity sensor HS2 may be an oval, a triangle, a rectangle, a polygon, etc., to correspond to the shape of the top surface of the door 1003. The humidity sensor HS2 may also be arranged in at least one region of the top surface of the door 1003. That is, the humidity sensor HS2 may be arranged in any part of the top surface of the door 1003, rather than the entire top surface.

[0144] When the humidity sensors HS1 and HS2 are disposed on the cover 1002, advantageous effects can be expected in terms of space utilization compared to when the humidity sensors must be disposed within the receiving passage 1004h. When the humidity sensors are disposed within the receiving passage 1004h, there is a restriction that the sensors must be disposed around the heater (650 in FIG. 6). As a result, the humidity sensors may be disposed in an area adjacent to the filter rod (22 in FIG. 4) rather than the tobacco rod (21 in FIG. 4) which mainly contains moisture. Meanwhile, the humidity sensors HS1 and HS2 according to an embodiment of the present invention measure the amount of moisture condensed on the cover 1002 due to evaporation of moisture contained within the cigarette 2000 when the cigarette 2000 is heated, and may be disposed relatively freely in at least one area on the cover 1002.

[0145] Fig. 9A is a cross-sectional view illustrating a capacitance-type humidity sensor. Fig. 9B is a cross-sectional view illustrating an electrical resistance-type humidity sensor. Fig. 9C is a cross-sectional view illustrating an optical humidity sensor. Here, since the humidity sensor HS1 illustrated in Fig. 8A and the humidity sensor HS2 illustrated in Fig. 8B operate on substantially the same principle, for convenience of explanation, the humidity sensor will be described below based on the humidity sensor HS1 illustrated in Fig. 8A.

[0146] Referring to FIGS. 8A and 9A to 9C, the humidity sensor HS1 may be any one of an electrical resistance type, an electrostatic capacitance type, and an optical type.

[0147] 6, 8A, and 9A, one surface of the humidity detecting sensor HS1 may form a continuous surface with the upper surface of the cover 1002. The humidity detecting sensor HS1 may include a plurality of electrodes E1, a substrate SUB1, and a coating layer CT.

[0148] The electrode E1 may be made of a conductive material, such as a metal material with high conductivity, such as gold (Au), silver (Ag), copper (Cu), or aluminum (Al).

[0149] The capacitance between the electrodes E1 may vary depending on the amount of moisture WT between the electrodes E1. For example, as the amount of moisture WT condensed on the coating layer CT increases, the capacitance may also increase.

[0150] The substrate SUB1 may implement an electrode E1, and the coating layer CT may consist of a polymer composite surrounding the electrode E1 and the substrate SUB1.

[0151] The humidity sensors HS1 and HS2 may output an electrical signal corresponding to the capacitance between the electrodes E1 to an external component (e.g., the controller 610). The humidity sensor HS1 may detect a change in the capacitance between the electrodes E1 and output an electrical signal corresponding to the detection result to the external component (e.g., the controller 610).

[0152] The control unit 610 can detect the amount of moisture condensed on the coating layer CT based on the signal received from the moisture sensor HS1.

[0153] 6, 8A, and 9B, one surface of the humidity sensor HS1 may form a continuous surface with the upper surface of the cover 1002. The humidity sensor HS1 may include a plurality of electrodes E2, a substrate SUB2, and a desiccant DH.

[0154] The electrode E2 may be made of a conductive material. For example, the electrode E1 may be made of a metal material with high conductivity, such as gold (Au), silver (Ag), copper (Cu), or aluminum (Al). Although not explicitly shown in FIG. 9B , the electrode E2 may have a structure in which pairs of comb-shaped electrodes E2 are alternately arranged on a plane. Each of the comb-shaped electrodes E2 may include a first portion extending in a first direction and a plurality of second portions branching in a second direction perpendicular to the first direction.

[0155] The dehumidifying agent DH may be made of a material that absorbs surrounding moisture WT. For example, the dehumidifying agent DH may be made of a conductive polymer material such as lithium chloride (LiCl) or aluminum oxide (Al2O3).

[0156] The resistance between the electrodes E2 may vary depending on the amount of moisture WT absorbed by the dehumidifying agent DH. For example, the resistance may decrease as the amount of moisture WT absorbed by the dehumidifying agent DH increases.

[0157] The substrate SUB2 can have an electrode E2 mounted thereon.

[0158] The humidity sensor HS1 may output an electrical signal corresponding to the resistance between the electrodes E2 to an external component (e.g., the control unit 610). The humidity sensor HS1 may detect a change in the resistance between the electrodes E2 and output an electrical signal corresponding to the detection result to the external component (e.g., the control unit 610).

[0159] The control unit 610 can detect the amount of moisture absorbed (or condensed) in the dehumidifying agent DH based on the signal received from the humidity sensor HS1.

[0160] 6, 8A, and 9C, one surface of the humidity sensor HS1 may form a continuous surface with the upper surface of the cover 1002. The humidity sensor HS1 may include a light emitting unit EM, a light receiving unit RC, a substrate SUB3, and a coating layer CT.

[0161] The light emitting unit EM may include at least one light source that generates light. For example, the light emitting unit EM may include a light emitting diode (LED), an organic light emitting diode (OLED), a laser diode (LD), etc. In this case, the light sources included in the light emitting unit EM may be arranged in a predetermined pattern.

[0162] The light emitting unit EM can emit light in a predetermined direction. For example, the light emitting unit EM can include a first condenser (not shown) that condenses light generated from a light source toward an object. Here, the first condenser can be an imaging lens, a diffractive optical element (DOE), or the like.

[0163] The light receiving unit RC may include a photodiode that is sensitive to light, and may output an electrical signal corresponding to the light incident on the photodiode.

[0164] The light receiving unit RC may include a second light collecting unit (not shown) that collects light reflected from an object (hereinafter, referred to as reflected light). For example, the reflected light collected by the second light collecting unit may be transmitted to a photodiode included in the light receiving unit RC. In this case, the second light collecting unit may include a lens that receives the reflected light incident from a predetermined direction.

[0165] The light receiving unit RC may further include an optical filter (not shown) that selectively transmits light in a specific wavelength range. For example, the optical filter may be an infrared pass filter that selectively passes infrared light having a wavelength of 780 nm to 1 mm.

[0166] The substrate SUB3 may have mounted thereon the light emitting portion EM and the light receiving portion RC. The coating layer CT may be made of a polymer composite that surrounds the light emitting portion EM, the light receiving portion RC, and the substrate SUB3.

[0167] Meanwhile, light emitted from the light emitter EM in a predetermined direction may be reflected by the moisture WT condensed on the coating layer CT and transmitted to the light receiver RC, which may then output an electrical signal corresponding to the amount of light incident on the photodiode.

[0168] Depending on the amount of moisture WT condensed on the coating layer CT, the time difference between the time when light is emitted from the light emitting unit EM and the time when the reflected light is incident on the light receiving unit RC may vary.

[0169] For example, when a large amount of moisture WT condenses on the coating layer CT, light reflection by the moisture WT can occur more easily than when the amount of moisture WT is small. In this case, the time difference between when light is emitted from the light-emitting element EM and when the reflected light is incident on the light-receiving element RC can be shortened.

[0170] The humidity sensor HS1 may output an electrical signal corresponding to the amount of light and / or the time difference of light incident on the light receiving unit RC to an external component (e.g., the control unit 610). The humidity sensor HS1 may detect a change in the amount of light and / or the time difference of light incident on the light receiving unit RC, and output an electrical signal corresponding to the detection result to an external component (e.g., the control unit 610).

[0171] The control unit 610 can detect the amount of moisture condensed on the coating layer CT based on the signal received from the humidity sensor HS1.

[0172] 7A to 9C, the control unit 610 can classify the cigarette 2000 as a normal cigarette or an over-moist cigarette based on the amount of moisture detected by the humidity sensors HS1 and HS2.

[0173] According to one embodiment, the control unit 610 can compare the amount of moisture sensed by the humidity sensors HS1 and HS2 with a preset threshold value to determine the humidity state of the cigarette 2000. In this case, the preset threshold value is also the minimum amount of moisture at which the user feels a heat sensation due to moisture contained inside the cigarette 2000 when inhaling aerosol. For example, the control unit 610 can determine the cigarette 2000 as a normal cigarette if the amount of moisture is less than the threshold value, and can determine the cigarette 2000 as an over-humid cigarette if the amount of moisture is equal to or greater than the threshold value.

[0174] The control unit 610 may operate the heater 650 with the first temperature profile TP1 if the cigarette 2000 is determined to be a normal cigarette, and may operate the heater 650 with the second temperature profile TP2 if the cigarette 2000 is determined to be an over-moist cigarette. The first temperature profile TP1 and the second temperature profile TP2 will be described in detail below with reference to FIG. 10.

[0175] 10 is a graph illustrating the temperature profile, where the solid line indicates the first temperature profile for regular cigarettes, and the dashed line indicates the second temperature profile for over-moistened cigarettes.

[0176] 10, a first temperature profile TP1 shows temperature values ​​over time optimized for a regular cigarette. The first temperature profile TP1 can be divided into a first section P1, which is a preheating section, and a second section P2, which is a smoking section.

[0177] The first section P1 may include a section where the temperature rises from a first temperature T1, which is the outside air temperature, to a second temperature T2, at which the aerosol-generating material volatilizes, and a section where the temperature falls to a third temperature T3, which is the smoking start temperature. The second section P2 may include a section where the temperature falls from the third temperature T3 to a fourth temperature T4, which is a holding temperature, and a section where the fourth temperature T4 is held. In this case, the second temperature T2, the third temperature T3, and the fourth temperature T4 are all equal to or higher than the temperatures at which the aerosol-generating material volatilizes, and may vary depending on the type of aerosol-generating material.

[0178] Meanwhile, the second temperature profile TP2 indicates temperature values ​​over time optimized for over-moistened cigarettes. The second temperature profile TP2 may be divided into a third section P3, which is a pre-heating section, and a fourth section P4, which is a smoking section.

[0179] The third section P3 may include a section in which the temperature rises from a first temperature T1, which is the outside air temperature, to a second temperature T2 at which the aerosol-forming material volatilizes, a section in which the second temperature T2 is maintained, and a section in which the temperature falls to a fourth temperature T4, which is the smoking start temperature. The fourth section P4 may include a section in which the fourth temperature T4 is maintained.

[0180] In this case, the time required to reach the second temperature T2 in accordance with the second temperature profile TP2 is longer than the time required to reach the second temperature T2 in accordance with the first temperature profile TP1 due to the moisture contained in the cigarette 2000.

[0181] Furthermore, after the second temperature profile TP2 reaches the second temperature T2, at least a portion of the moisture contained within the cigarette 2000 may evaporate while the second temperature profile TP2 is maintained constant at the second temperature T2, thereby reducing the initial heat sensation. Meanwhile, if the amount of moisture contained within the cigarette 2000 is below a threshold, the first temperature profile TP1 may omit the section for evaporating the moisture contained within the cigarette 2000, since it is unlikely that the user will feel heat due to the moisture contained within the cigarette 2000. That is, the pre-heating section P3 of the second temperature profile TP2 is longer than the pre-heating section P1 of the first temperature profile TP1, and the third temperature T3, which is the smoking start temperature of a regular cigarette, is higher than the fourth temperature T4, which is the smoking start temperature of an over-moistened cigarette.

[0182] FIG. 11 is a flowchart illustrating a method of operation of an aerosol generating device according to one embodiment.

[0183] 6 to 11, the method of operating the aerosol generating device may include a step of heating the cigarette 2000 using the heater 650 (S100), a step of measuring the amount of moisture condensed on the cover 1002 using humidity sensors HS1 and HS2 (S200), a step of comparing the measured amount of moisture with a preset threshold value (S300) and determining the humidity state of the cigarette 2000 (S400), and a step of operating the heater 650 according to a temperature profile corresponding to the determined humidity state of the cigarette 2000 (S500).

[0184] In this case, the aerosol generating device 1000 may include a case 1100 having a receiving passage 1004h into which the cigarette 2000 is inserted, and a cover 1002 connected to the case 1100 and having an external hole 1002p overlapping the receiving passage 1004h in the thickness direction.

[0185] Specifically, in the step of heating the cigarette 2000 (S100), if moisture is contained in the cigarette 2000, the moisture may evaporate and form condensation on the upper surface of the cover 1002 when the cigarette 2000 is heated. If the cigarette contains a large amount of moisture, more moisture evaporates than in a dry, general cigarette, and therefore more condensation may occur on the upper surface of the cover 1002. In other words, the amount of moisture condensed on the upper surface of the cover 1002 is proportional to the amount of moisture contained in the cigarette 2000.

[0186] In the step (S200) of measuring the amount of moisture condensed on the cover 1002 using the humidity sensors HS1 and HS2, the humidity sensors HS1 and HS2 may be placed at a position in the aerosol generating device (1000 in FIG. 7A) where condensation is likely to occur.

[0187] For example, as shown in FIG. 8A, the cover 1002 may include an outer hole 1002p overlapping the receiving passage (1004h in FIG. 7A) in the thickness direction. The humidity detecting sensor HS1 may be disposed along the outer contour of the outer hole 1002p. In this case, the outer contour of the outer hole 1002p has a circular shape, and the humidity detecting sensor HS1 has a ring shape.

[0188] 8B, the cover 1002 may include a door 1003 that is slidable along the top surface thereof. The humidity sensor HS2 may be disposed on the top surface of the door 1003. In this case, the top surface of the door 1003 may have a circular shape, and the humidity sensor HS2 may be formed over the entire top surface of the door 1003.

[0189] In this case, the humidity sensor HS1 may be any one of an electrical resistance type, an electrostatic capacitance type, and an optical type.

[0190] In the step of comparing the measured moisture amount with a preset threshold value (S300) and determining the humidity state of the cigarette 2000 (S400), the control unit 610 may classify the cigarette 2000 as a normal cigarette or an over-humid cigarette based on the moisture amount sensed by the humidity sensors HS1 and HS2. The control unit 610 may compare the moisture amount sensed by the humidity sensors HS1 and HS2 with a preset threshold value to determine the humidity state of the cigarette 2000. In this case, the preset threshold value is also the minimum moisture amount at which the user feels a heat sensation due to moisture contained inside the cigarette 2000 when inhaling aerosol. For example, the control unit 610 may determine the cigarette 2000 as an over-humid cigarette if the moisture amount is equal to or greater than the threshold value (S410), or may determine the cigarette 2000 as a normal cigarette if the moisture amount is less than the threshold value (S410).

[0191] In the step S500 of operating the heater 650 according to a temperature profile corresponding to the determined humidity state of the cigarette 2000, the control unit 610 may operate the heater 650 with a first temperature profile TP1 if the cigarette 2000 is determined to be a regular cigarette, and may operate the heater 650 with a second temperature profile TP2 if the cigarette 2000 is determined to be an over-humid cigarette. The first temperature profile TP1 may be divided into a first section P1, which is a pre-heating section, and a second section P2, which is a smoking section. The second temperature profile TP2 may be divided into a third section P3, which is a pre-heating section, and a fourth section P4, which is a smoking section. In this case, the pre-heating section P3 of the second temperature profile TP2 is longer than the pre-heating section P1 of the first temperature profile TP1. This may allow at least a portion of the moisture contained within the cigarette 2000 to evaporate, thereby mitigating the initial heat sensation.

[0192] Those skilled in the art will understand that the present invention can be embodied in various modified forms without departing from the essential characteristics of the above description. Therefore, the disclosed method should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the claims, not the foregoing description, and all variations within the scope of the claims should be construed as being within the scope of the present invention.

Claims

1. a case including a receiving passage therein into which a cigarette is inserted; a cover coupled to the case; a heater for heating the cigarette; a humidity sensor disposed on the upper surface of the cover; a control unit that compares the amount of moisture sensed by the humidity sensor with a preset threshold value and determines the humidity state of the cigarette.

2. The aerosol generating device according to claim 1 , wherein the humidity sensor measures the amount of moisture based on moisture condensed on the cover by heating the cigarette.

3. The cover includes an outer hole overlapping the receiving passage in a thickness direction, The aerosol generating device according to claim 1 , wherein the humidity sensor is disposed along an outer contour of the external hole.

4. The aerosol generating device according to claim 3 , wherein the outer hole has a circular outline, and the humidity sensor has a ring shape.

5. the cover includes a door slidable along an upper surface; The aerosol generating device according to claim 1 , wherein the humidity sensor is disposed on an upper surface of the door.

6. The aerosol generating device according to claim 5 , wherein the upper surface of the door has a circular shape, and the humidity sensor is formed over the entire upper surface of the door.

7. The aerosol generating device according to claim 1 , wherein the humidity sensor is one of an electrical resistance type, a capacitance type, and an optical type.

8. The aerosol generating device according to claim 1 , wherein the heater is disposed in the receiving passage and heats the cigarette by induction heating.

9. The aerosol generating device according to claim 1 , wherein the control unit determines the cigarette to be a normal cigarette when the moisture content is less than the threshold value, and determines the cigarette to be an over-moist cigarette when the moisture content is equal to or greater than the threshold value.

10. The aerosol generating device according to claim 9, wherein the control unit operates the heater according to a first temperature profile when the cigarette is determined to be the regular cigarette, and operates the heater according to a second temperature profile when the cigarette is determined to be the overhumid cigarette.

11. The aerosol generating device according to claim 10 , wherein a preheating section of the second temperature profile is longer than a preheating section of the first temperature profile.

12. 1. A method of operating an aerosol generating device, comprising: heating the cigarette with a heater; determining a humidity state of the cigarette by comparing the amount of moisture sensed by the humidity sensor with a preset threshold value; and operating the heater with a temperature profile corresponding to the determined humidity state of the cigarette; the aerosol generating device includes a case having a receiving passage into which the cigarette is inserted, and a cover coupled to the case and having an outer hole overlapping the receiving passage in a thickness direction; The method for operating an aerosol generating device, wherein the humidity sensor is disposed on the upper surface of the cover.

13. The method of claim 12, wherein the determining the humidity state of the cigarette measures the amount of moisture based on moisture condensed on the cover by heating the cigarette.

14. the cover includes a door slidable along an upper surface; The method for operating an aerosol generating device according to claim 12 , wherein the humidity sensor is disposed on an upper surface of the door.

15. The method of claim 12, wherein the humidity sensor is one of an electrical resistance type, a capacitance type, and an optical type.

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