Aerosol generating device and control method thereof

Abstract

An embodiment relates to an aerosol generating device and a control method thereof. The aerosol generating device according to one embodiment includes a heater for heating at least a portion of an aerosol product, a temperature sensor for measuring the temperature of the heater, and a processor for controlling the supply of power to the heater according to a first pre-heating profile that defines a predetermined pre-heating time and pre-heating temperature. When the temperature of the heater is equal to or higher than a reference temperature, the processor controls the supply of power to the heater according to a second pre-heating profile that is different from the first pre-heating profile.

Description

[Technical Field]

[0001] The present invention relates to an aerosol generating device and a control method thereof. [Background technology]

[0002] Recently, there has been an increasing demand for alternative methods to overcome the shortcomings of conventional cigarettes, such as systems that generate aerosols by heating cigarettes or aerosol-generating materials using an aerosol-generating device, rather than by burning cigarettes to generate aerosols.

[0003] The aerosol generating device is set to a target temperature for heating the aerosol product, and the aerosol generating device can preheat the heater for a certain period of time before heating the aerosol product, thereby increasing the temperature of the heater to the target temperature. Summary of the Invention [Problem to be solved by the invention]

[0004] The conditions under which a user uses an aerosol generating device may vary, for example, when smoking in very high or low ambient temperatures, in summer or winter, indoors or outdoors, or immediately after smoking once.

[0005] In particular, when a user stops smoking after a predetermined number of puffs, the heater of the aerosol generating device is already heated to a high temperature. Then, when the user inserts a new aerosol product into the aerosol generating device to smoke again, the heater of the aerosol generating device is preheated again to a high temperature. If the heater of the aerosol generating device is preheated with the same temperature profile during the first smoking and the subsequent smoking, a high-temperature aerosol may be generated from the aerosol product during the subsequent smoking, which may cause inconvenience to the user.

[0006] Problems to be solved through the embodiments of the present invention are not limited to the above-mentioned problems, and problems not mentioned will be clearly understood by those skilled in the art from this specification and the accompanying drawings. [Means for solving the problem]

[0007] Various embodiments of the present invention provide an aerosol generating device that distinguishes between initial smoking and continuous smoking and controls the heater temperature according to a preheating temperature profile corresponding to each.

[0008] In one embodiment, the aerosol generating device comprises a heater for heating at least a portion of an aerosol product, a temperature sensor for measuring the temperature of the heater, and a processor for controlling the supply of power to the heater according to a first preheating profile defining a predetermined preheating time and preheating temperature, wherein the processor controls the supply of power to the heater according to a second preheating profile different from the first preheating profile when the temperature of the heater is equal to or higher than a reference temperature.

[0009] In another embodiment, a method for controlling an aerosol generating device includes steps of measuring the temperature of a heater that heats at least a portion of an aerosol product, determining whether the temperature of the heater is equal to or higher than a reference temperature, and, if the temperature of the heater is equal to or higher than the reference temperature, controlling the power supply to the heater according to a second preheating profile different from the first preheating profile. [Effects of the Invention]

[0010] According to various embodiments of the present invention, by preheating based on the corresponding preheating temperature profile for the first smoking and for continuous smoking, the heat sensation of the aerosol generated from the aerosol product can be reduced even during continuous smoking, thereby preventing user inconvenience caused by high-temperature aerosol.

[0011] In addition, according to various embodiments of the present invention, in the case of a preheating temperature profile corresponding to continuous smoking, the time corresponding to the temperature drop section is extended, thereby reducing the current consumption of the heater when the user smokes continuously.

[0012] However, the effects of the embodiments are not limited to the effects described above, and effects not mentioned will be clearly understood by those skilled in the art from this specification and the accompanying drawings. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram illustrating an example in which a cigarette is inserted into an aerosol generating device according to an embodiment. [Figure 2] 1 is a diagram illustrating an example in which a cigarette is inserted into an aerosol generating device according to an embodiment. [Figure 3] 1 is a diagram illustrating an example in which a cigarette is inserted into an aerosol generating device according to an embodiment. [Figure 4] 1 is a diagram illustrating an example of a cigarette according to an embodiment. [Figure 5] 1 is a diagram illustrating an example of a cigarette according to an embodiment. [Figure 6] FIG. 1 is a schematic block diagram of an aerosol generating device according to one embodiment. [Figure 7] FIG. 10 is an exemplary diagram illustrating a temperature profile of an entire heating section of the aerosol generating device. [Figure 8] FIG. 8 is an exemplary diagram illustrating an example of a preheating section in the temperature profile shown in FIG. 7. [Figure 9] FIG. 8 is an exemplary diagram illustrating another example of the preheating section in the temperature profile shown in FIG. 7. [Figure 10] 10 is a flowchart illustrating a control method of an aerosol generating device according to another embodiment. [Figure 11] 10 is a flowchart illustrating a control method of an aerosol generating device according to yet another embodiment. [Figure 12]FIG. 10 is a block diagram of an aerosol generating device according to yet another embodiment. [Figure 13] 13 is a diagram for explaining a preheating mode of the aerosol generating device shown in FIG. 12. [Figure 14] 13 is a diagram for explaining a preheating mode of the aerosol generating device shown in FIG. 12. [Figure 15] 13 is a diagram for explaining a preheating mode of the aerosol generating device shown in FIG. 12. [Figure 16] 13 is a diagram for explaining a preheating mode of the aerosol generating device shown in FIG. 12. DETAILED DESCRIPTION OF THE INVENTION

[0014] The terms used in the embodiments are generally used in the present invention, taking into consideration their functions in the present invention. However, these terms may change depending on the intentions of those skilled in the art, legal precedents, the emergence of new technologies, etc. In addition, in certain cases, the applicant may arbitrarily select terms, and in such cases, their meanings will be described in detail in the description of the 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 by their names.

[0015] Throughout the specification, when a part "includes" a certain element, this does not mean that it excludes other elements and may further include other elements, unless otherwise specified. Furthermore, terms such as "module" and "unit" used in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware or software, or a combination of hardware and software.

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The present invention will now be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0017] Hereinafter, the embodiments will be described in detail with reference to the drawings.

[0018] 1 to 3 are diagrams showing an example in which a cigarette is inserted into an aerosol generating device.

[0019] 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 is inserted into the internal space of the aerosol generator 1.

[0020] The components according to this embodiment are shown in the aerosol generating device 1 shown in Figures 1 to 3. Therefore, it will be understood by those skilled in the art that the aerosol generating device 1 may further include other general-purpose components in addition to the components shown in Figures 1 to 3.

[0021] 2 and 3 show that the aerosol generating device 1 is provided with the heater 13, but the heater 13 may be omitted as necessary.

[0022] 1 shows that the battery 11, the control unit 12, and the heater 13 are arranged in a row. Also, FIG. 2 shows that the battery 11, the control unit 12, the vaporizer 14, and the heater 13 are arranged in a row. Also, FIG. 3 shows that 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. 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.

[0023] When the cigarette 2 is inserted into the aerosol generating device 1, the aerosol generating device 1 activates the heater 13 and / or vaporizer 14 to generate aerosol. The aerosol generated by the heater 13 and / or vaporizer 14 passes through the cigarette 2 and is delivered to the user.

[0024] If necessary, the aerosol generation device 1 heats the heater 13 even when the cigarette 2 is not inserted in the aerosol generation device 1 .

[0025] The battery 11 supplies power used when the aerosol generation device 1 operates. For example, the battery 11 supplies power to heat the heater 13 or the vaporizer 14, and supplies power necessary for the operation of the control unit 12. The battery 11 also supplies power necessary for the operation of a display, a sensor, a motor, and the like provided in the aerosol generation device 1.

[0026] 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 provided in the aerosol generation device 1. The control unit 12 may also check the state of each component of the aerosol generation device 1 to determine whether the aerosol generation device 1 is in an operable state.

[0027] The control unit 12 includes at least one processor. The processor may be implemented as an array of multiple logic gates, or as 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 processor may also be implemented in other forms of hardware.

[0028] The heater 13 is heated by power supplied from the battery 11. For example, when a cigarette is inserted into the aerosol generation device 1, the heater 13 is located outside the cigarette. Thus, the heated heater 13 increases the temperature of the aerosol-generating material inside the cigarette.

[0029] The heater 13 may be an electric resistance heater. For example, the heater 13 has an electric conductive track, and an electric current flows through the electric conductive track to heat the heater 13. However, the heater 13 is not limited to the above example, and any heater that can be heated to a desired temperature can be used without any restrictions. Here, the desired temperature may be already set in the aerosol generation device 1, or may be set to the desired temperature by the user.

[0030] Meanwhile, as another example, the heater 13 may be an induction heater. Specifically, the heater 13 includes an electrically conductive coil for heating the cigarette by induction heating, and the cigarette includes a susceptor heated by the induction heater.

[0031] For example, the heater 13 may include a tube-type heating element, a plate-type heating element, a needle-type heating element, or a rod-type heating element, and heats the inside or outside of the cigarette 2 depending on the shape of the heating element.

[0032] 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 Figs. 1 to 3, and may be manufactured in various shapes.

[0033] The vaporizer 14 heats the liquid composition to generate an aerosol, which is then transmitted to the user through the cigarette 2. In other words, the aerosol generated by the vaporizer 14 travels along an airflow passage of the aerosol generating device 1, and the airflow passage is configured to allow the aerosol generated by the vaporizer 14 to be transmitted to the user through the cigarette 2.

[0034] 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 provided in the aerosol generation device 1 as independent modules.

[0035] The liquid storage unit stores 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 fabricated so as to be detachable from the vaporizer 14, or may be fabricated integrally with the vaporizer 14.

[0036] For example, the liquid composition may contain water, solvent, ethyl alcohol, plant extract, fragrance, flavoring, or vitamin mixture. Flavorings include, but are not limited to, menthol, peppermint, spearmint oil, and various fruit-flavored ingredients. Flavorings include ingredients that provide the user with a variety of flavors or tastes. The vitamin mixture may be, 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 contain an aerosol-forming agent, such as glycerin and propylene glycol.

[0037] The liquid transfer means transfers the liquid composition in the liquid storage portion 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, or porous ceramic.

[0038] 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 composed of a conductive filament such as a nichrome wire, and may be arranged in a structure wound around the liquid transfer means. The heating element is heated by supplying 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 is generated.

[0039] For example, the vaporizer 14 may be called, but is not limited to, a cartomizer or an atomizer.

[0040] 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 includes a display capable of outputting visual information and / or a motor for outputting tactile information. The aerosol generator 1 also includes at least one sensor (such as a puff sensor, a temperature sensor, or a cigarette insertion sensor). The aerosol generator 1 is also fabricated with a structure that allows outside air to flow in or internal gas to flow out even when a cigarette 2 is inserted.

[0041] 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 be heated while the cradle and the aerosol generation device 1 are coupled together.

[0042] The cigarette 2 is similar to a typical combustion cigarette. For example, the cigarette 2 is 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 the form of granules or capsules may be inserted into the second portion.

[0043] The entire first part is inserted into the aerosol generation device 1, and the second part is exposed to the outside. Alternatively, only a part of the first part, 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. At this time, the aerosol is generated by outside air passing through the first part, and the generated aerosol passes through the second part and is delivered to the user's mouth.

[0044] As one example, outside air flows in 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 can be adjusted by the user. This allows the user to adjust the amount of atomization, smoking sensation, etc. As another example, outside air can flow into the cigarette 2 through at least one hole formed in the surface of the cigarette 2.

[0045] An example of the cigarette 2 will be described below with reference to FIGS.

[0046] 4 and 5 are drawings showing examples of cigarettes.

[0047] 4, the cigarette 2 comprises a tobacco rod 21 and a filter rod 22. The first portion 21 described above with reference to FIGS. 1 to 3 comprises the tobacco rod 21, and the second portion 22 comprises the filter rod 22.

[0048] 4, the filter rod 22 is shown as a single segment, but is not limited to this. In other words, 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 a specific component contained in the aerosol. If necessary, the filter rod 22 may also include at least one segment that performs another function.

[0049] The cigarette 2 has a diameter ranging from 5 mm to 9 mm and a length of approximately 48 mm, but is not limited thereto. For example, but not limited to, the tobacco rod 21 has a length of approximately 12 mm, the first segment of the filter rod 22 has a length of approximately 10 mm, the second segment of the filter rod 22 has a length of approximately 14 mm, and the third segment of the filter rod 22 has a length of approximately 12 mm.

[0050] The cigarettes 2 are wrapped in at least one wrapper 24. The wrapper 24 has at least one hole formed therein through which external air can flow in or internal gas can flow out. As an example, the cigarettes 2 are wrapped in a single wrapper 24. As another example, the cigarettes 2 may be wrapped in two or more wrappers 24 stacked one on top of the other. For example, the tobacco rod 21 is wrapped in a first wrapper 241, and the filter rod 22 is wrapped in wrappers 242, 243, and 244. The entire cigarette 2 may then be rewrapped in a single wrapper 245. If the filter rod 22 is composed of multiple segments, each segment may be wrapped in a wrapper 242, 243, or 244.

[0051] The first wrapper 241 and the second wrapper 242 are made of common filter wrapping paper. For example, the first wrapper 241 and the second wrapper 242 are porous wrapping paper 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 laminated paper wrapping material.

[0052] 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 or 96 g / m 2 and preferably 90 g / m 2 or 94g / m 2 The thickness of the third wrapper 243 is within the range of 120 um to 130 um, and preferably 125 um.

[0053] The fourth wrapper 244 is made of oil-resistant hard wrapping paper. For example, the basis weight of the fourth wrapper 244 is 88 g / m 2 or 96 g / m 2 and preferably 90 g / m 2 or 94g / m 2 The thickness of the fourth wrapper 244 is within the range of 120 um to 130 um, and preferably 125 um.

[0054] The fifth wrapper 245 may be made of MFW paper. Here, MFW paper 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 or 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 um to 70 um, and preferably 67 um.

[0055] A predetermined substance is added to the fifth wrapper 245. Examples of the predetermined substance include, but are 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, any substance other than silicon that has the above-mentioned properties may be applied (or coated) to the fifth wrapper 245 without limitation.

[0056] The fifth wrapper 245 prevents 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 any one of the substances contained in the tobacco rod 310 heats up above its ignition point, the cigarette 2 may burn. Even in such a case, the fifth wrapper 245 contains a non-combustible substance, preventing the cigarette 2 from burning.

[0057] Furthermore, the fifth wrapper 245 prevents the holder 1 from being contaminated by substances produced in the cigarette 2. When the user puffs, a liquid substance is produced in the cigarette 2. For example, a liquid substance (such as moisture) is produced when the aerosol produced in the cigarette 2 is cooled by outside air. By wrapping the cigarette 2 with the fifth wrapper 245, the liquid substance produced in the cigarette 2 is prevented from leaking outside the cigarette 2.

[0058] 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.

[0059] The tobacco rod 21 may be manufactured in various ways. For example, the tobacco rod 21 may be manufactured in sheet form or strand form. Alternatively, the tobacco rod 21 may be manufactured from shredded tobacco, which is a tobacco sheet. The tobacco rod 21 may also be surrounded by a thermally conductive material. For example, the thermally conductive material may be, but is not limited to, a metal foil such as aluminum foil. For example, the thermally conductive material surrounding the tobacco rod 21 uniformly distributes 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 also functions as a susceptor that is heated by an induction heater. Although not shown in the drawings, the tobacco rod 21 may further include a susceptor in addition to the thermally conductive material surrounding the exterior.

[0060] 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 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 in a different shape.

[0061] 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 interior. The first segment prevents the inner material of the tobacco rod 210 from being pushed outward when the heater 13 is inserted, and also provides a cooling effect for the aerosol. The hollow interior of the first segment may have a diameter ranging from 2 mm to 4.5 mm, but is not limited thereto.

[0062] The length of the first segment may be 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.

[0063] The hardness of the first segment can be adjusted by adjusting the amount of plasticizer used during manufacturing. The first segment is manufactured by inserting a film, tube, or other structure made of the same or different material into its interior (e.g., hollow).

[0064] 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.

[0065] The distance or diameter of the second segment may vary depending on the shape of the cigarette 2. For example, the length of the second segment may be within the range of 7 mm to 20 mm. Preferably, the length of the second segment is 14 mm, but is not limited thereto.

[0066] The second segment is fabricated by weaving polymer fibers. In this case, a fragrance liquid may be applied to the polymer fibers. Alternatively, the second segment may be fabricated by weaving a separate fiber coated with a fragrance liquid and a polymer fiber together. Alternatively, the second segment may be formed by a crimped polymer sheet.

[0067] For example, the polymer is 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.

[0068] The second segment is formed from woven polymer fibers or a crimped polymer sheet, whereby the second segment comprises one or more longitudinally extending channels, where a channel refers to a passageway through which a gas (e.g., air or aerosol) passes.

[0069] For example, the second segment of crimped polymer sheet is 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 is between about 300 mm2 / mm and about 1000 mm2 / mm. The aerosol cooling element also has a specific surface area of ​​about 10 mm2. 2 / mg and about 100mm 2 It is made from between 1 / mg of material.

[0070] The second segment includes 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 the second segment with at least 1.5 mg of menthol.

[0071] The third segment of the filter rod 22 is also a cellulose acetate filter. The length of the third segment is suitably within the range of 4 mm to 20 mm. For example, but not limited to, the length of the third segment is 12 mm.

[0072] 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 is delivered to the user through the third segment. Therefore, when a flavoring element is added to the third segment, the effect of improving the persistence of the flavor delivered to the user is achieved.

[0073] The filter rod 22 also includes at least one capsule 23. The capsule 23 may function to generate a flavor or may function to generate an aerosol. For example, the capsule 23 has a structure in which a liquid containing a flavoring agent is enclosed in a coating. The capsule 23 may be, but is not limited to, a spherical or cylindrical shape.

[0074] 5, the cigarette 3 further includes a front-end plug 33. The front-end plug 33 is located on one side of the tobacco rod 31 opposite the filter rod 32. The front-end plug 33 prevents the tobacco rod 31 from detaching to the outside and prevents liquefied aerosol from flowing from the tobacco rod 31 into the aerosol generating device (1 in FIGS. 1 to 3) during smoking.

[0075] The filter rod 32 comprises a first segment 321 and a second segment 322. Here, the first segment 321 corresponds to the first segment of the filter rod 22 of FIG. 4, and the second segment 322 corresponds to the third segment of the filter rod 22 of FIG. 4.

[0076] The diameter and overall length of the cigarette 3 correspond to those of the cigarette 2 in Figure 4. For example, but not limited to, the length of the front end plug 33 is approximately 7 mm, the length of the tobacco rod 31 is approximately 15 mm, the length of the first segment 321 is approximately 12 mm, and the length of the second segment 322 is approximately 14 mm.

[0077] The cigarette 3 is wrapped by at least one wrapper 35. The wrapper 35 has 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 is wrapped by a first wrapper 351, the tobacco rod 31 is wrapped by a second wrapper 352, the first segment 321 is wrapped by a third wrapper 353, and the second segment 322 is wrapped by a fourth wrapper 354. The entire cigarette 3 is then rewrapped by a fifth wrapper 355.

[0078] Also, at least one perforation 36 is formed in the fifth wrapper 355. For example, but not limited to, the perforation 36 is formed in the area surrounding the tobacco rod 31. The perforation 36 serves to transfer heat generated by the heater 13 shown in Figures 2 and 3 to the interior of the tobacco rod 31.

[0079] The second segment 322 also includes at least one capsule 34. The capsule 34 may function to generate a flavor or may function to generate an aerosol. For example, the capsule 34 has a structure in which a liquid containing a flavoring agent is enclosed in a coating. The capsule 34 may be, but is not limited to, a spherical or cylindrical shape.

[0080] The first wrapper 351 is formed by combining a metal foil, such as aluminum foil, with a common filter wrapper. For example, the total thickness of the first wrapper 351 is within the range of 45 um to 55 um, preferably 50.3 um. The thickness of the metal foil of the first wrapper 351 is within the range of 6 um to 7 um, preferably 6.3 um. The basis weight of the first wrapper 351 is 50 g / m 2 or 55g / m 2 and preferably 53 g / m2.

[0081] The second wrapper 352 and the third wrapper 353 are made of common filter wrapping paper, for example, porous wrapping paper or non-porous wrapping paper.

[0082] For example, the porosity of the second wrapper 352 is 35000 CU, but is not limited to this. The thickness of the second wrapper 352 is within the range of 70 um to 80 um, and preferably 78 um. The basis weight of the second wrapper 352 is 20 g / m 2 25 g / m², preferably 23.5 g / m² 2 is.

[0083] For example, the porosity of the third wrapper 353 is 24000 CU, but is not limited to this. The thickness of the third wrapper 353 is within the range of 60 um to 70 um, and preferably 68 um. The basis weight of the third wrapper 353 is 20 g / m 2 or 25g / m 2 and preferably 21 g / m2.

[0084] The fourth wrapper 354 is made of PLA laminated paper. Here, PLA laminated paper means 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 in the range of 100 μm to 120 μm, preferably 110 μm. The basis weight of the fourth wrapper 354 is in the range of 80 g / m to 100 g / m. 2and preferably 88 g / m2.

[0085] The fifth wrapper 355 is made of MFW paper. Here, MFW paper 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 355 is 57 g / m 2 or 63g / m 2 and preferably within the range of 60 g / m 2 The thickness of the fifth wrapper 355 is in the range of 64 um to 70 um, and preferably 67 um.

[0086] A predetermined substance is added to the fifth wrapper 355. Examples of the predetermined substance include, but are 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, any substance other than silicon that has the above-mentioned properties may be applied (or coated) to the fifth wrapper 355 without limitation.

[0087] The front end plug 33 is made of cellulose acetate. For example, the front end plug 33 is made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. The mono-denier of the filaments constituting the cellulose acetate tow is in the range of 1.0 to 10.0, preferably in the range of 4.0 to 6.0. More preferably, the mono-denier of the filaments constituting the front end plug 33 is 5.0. The cross section of the filaments constituting the front end plug 33 is also Y-shaped. The total denier of the front end plug 33 is 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.

[0088] If necessary, the front end plug 33 may include at least one channel, and the cross-sectional shape of the channel may be varied.

[0089] 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.

[0090] The first segment 321 is made of cellulose acetate. For example, the first segment is a hollow, tubular structure. The first segment 321 is made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. For example, the mono-denier and total denier of the first segment 321 are the same as those of the front end plug 33.

[0091] The second segment 322 is made of cellulose acetate. The mono-denier of the filaments constituting the second segment 322 is within the range of 1.0 to 10.0, preferably within the range of 8.0 to 10.0. More preferably, the mono-denier of the filaments of the second segment 322 is 9.0. The cross section of the filaments of the second segment 322 is Y-shaped. The total denier of the second segment 322 is within the range of 20,000 to 30,000, preferably 25,000.

[0092] FIG. 6 is a schematic block diagram of an aerosol generating device according to one embodiment.

[0093] 6, the aerosol generating device includes a control unit 610, a temperature sensor 620, and a heater 630. The components of the aerosol generating device according to an embodiment are not limited to these, and other components may be added or at least one component may be omitted depending on the embodiment.

[0094] The aerosol generating apparatus according to the embodiment controls the power supply to the heater according to a first pre-heating profile when the temperature of the heater 630 is lower than a reference temperature. The aerosol generating apparatus controls the power supply to the heater according to a second pre-heating profile different from the first pre-heating profile when the temperature of the heater 630 is equal to or higher than the reference temperature. The aerosol generating apparatus supplies power to the heater according to a pre-defined pre-heating profile under general conditions, such as room temperature, and supplies power to the heater according to another pre-heating profile under special conditions, such as when the heater temperature is high. Here, the pre-heating profile refers to a profile that defines a predetermined pre-heating time and pre-heating temperature. The first and second pre-heating profiles will be described later with reference to FIGS. 8 and 9.

[0095] A case where the temperature of the heater 630 is equal to or higher than the reference temperature may be, for example, a case where the device is used continuously or continuously, for example, when a second smoking series is started again shortly after the first smoking series has ended.

[0096] In the embodiment, a case where the temperature of the heater 630 is equal to or higher than the reference temperature is described. However, when the temperature of the heater 630 is lower than the aforementioned reference temperature or other reference temperatures, other preheating profiles may be applied since the conditions are different from the general conditions.

[0097] The temperature sensor 620 measures the temperature of the heater 630. For example, the temperature sensor 620 may be a contact-type temperature sensor that measures the temperature while in contact with the heater 630, or a non-contact-type temperature sensor that measures the temperature without contacting the heater 630. The contact-type temperature sensor is a thermocouple, a resistance temperature detector (RTD), a thermistor, or a temperature label, and the non-contact-type temperature sensor is an infrared temperature sensor. In the embodiment, the temperature sensor 620 is described as measuring the temperature of the heater 630, but is not limited thereto, and may also measure the temperature around or adjacent to the heater 630.

[0098] The heater 630 heats at least a portion of the aerosol product. The heater 630 may be any of the various types of heaters described with reference to FIGS. 1 to 3. The heater 630 is powered by the control of the controller 610 to heat at least a portion of the aerosol product. The at least a portion of the aerosol product refers to a tobacco rod containing at least one of an aerosol-generating material and a tobacco material. In one embodiment, the heater 630 is powered by the controller 610 according to a temperature profile corresponding to a preheating section and a heating section.

[0099] The control unit 610 controls the overall operation of the aerosol generating device. In one embodiment, the control unit 610 detects a user's smoking behavior. In this regard, in the present invention, a "first smoking series," a "second smoking series," or a "user's smoking behavior" refers to a series of puffs by the user for a predetermined number of puffs (e.g., 14 puffs) for one aerosol product. For example, the control unit 610 detects the user's continuous smoking behavior based on the temperature of the heater 630 measured by the temperature sensor 620. In another example, the control unit 610 may detect the user's continuous smoking behavior based on the time measured by a timer (not shown). That is, if the second smoking series continues within a predetermined time, e.g., 3 seconds, after the end of the first smoking series, it is determined to be a continuous smoking behavior.

[0100] When an aerosol product is inserted into the aerosol generating device, the control unit 610 measures the temperature of the heater 630 and determines whether the temperature of the heater 630 is equal to or higher than a reference temperature. In one embodiment, the control unit 610 determines whether a user intends to start smoking by determining whether an aerosol product has been inserted using a cigarette insertion detection sensor. In another example, the control unit 610 may measure the temperature of the heater 630 when a user input for operating the aerosol generating device, such as pressing an operation start button or a power button, is received, and determine whether the measured temperature is equal to or higher than a reference temperature.

[0101] The control unit 610 controls the power supply to the heater 630 based on the user's smoking behavior. For example, the control unit 610 detects whether the user's smoking behavior is the first smoking behavior or a consecutive smoking behavior following the first smoking behavior, and controls the power supply to the heater 630 based on the detection result.

[0102] FIG. 7 is an exemplary diagram illustrating a temperature profile in the entire heating section of the aerosol generating device.

[0103] Referring to FIG. 7, the preheating section (t o 7 shows the temperature profile of the entire heating section, which includes the pre-heating section (between t1 and t2) and the heating section (between t1 and t2). When smoking operation of the aerosol generating device is started, power is supplied to the heater according to the temperature profile defined by the temperature values ​​by time, as shown in FIG. 7. Each of the pre-heating section and heating section may be further divided into smaller sections.

[0104] The preheating section includes a first preheating section for increasing the temperature to a first target temperature T1, a second preheating section for maintaining the first target temperature T1, and a third preheating section for decreasing the temperature to a second target temperature T2. The heating section includes a first heating section for decreasing the temperature to a third target temperature T3, a second heating section for decreasing the temperature to a fourth target temperature T4, and a third heating section for maintaining the fourth target temperature T4. While the preheating sections have been described as the first preheating section, the second preheating section, and the third preheating section, they are not limited thereto and may be variously modified depending on the shape and type of the aerosol product or heater.

[0105] The preheating section or preheating profile shown in FIG. 7 will now be described in detail with reference to FIGS.

[0106] Figure 8 is an exemplary diagram illustrating an example of a preheating section in the temperature profile shown in Figure 7. Referring to Figure 8, a first preheating profile 800 and a second preheating profile 810 are shown.

[0107] The first preheating profile 800 indicates a predefined preheating time and preheating temperature for a predetermined preheating time t1. The aerosol generating device controls the power supply to the heater according to the first preheating profile. As shown, the first preheating profile 800 indicates a predefined preheating time and preheating temperature for a predetermined preheating time t1. o The preheating time is set to about 37 seconds, the temperature is raised to a first target temperature T1 for about 19 seconds, maintained at the first target temperature T1 for about 11 seconds, and then lowered to a second target temperature T2 for about 7 seconds. The preheating time and target temperatures are merely examples and are not limiting.

[0108] The second preheat profile 810 is t a The temperature is raised to the first target temperature T1 until t b The first target temperature T1 is maintained until time t2, and then the temperature is decreased to the second target temperature T2 until time t2. a is a temperature higher than the start temperature of the first pre-heating profile, for example, room temperature (approximately 15°C). Therefore, the second pre-heating profile 810 reaches the first target temperature T1 earlier than the first pre-heating profile 800. In this case, the aerosol generating device initially maintains a high temperature, which can cause a user to feel hot.

[0109] In the embodiment, the second pre-heating profile 810 may reduce the initial heat sensation by making the pre-heating time after the first target temperature T1 longer than that of the first pre-heating profile 800.

[0110] As shown in FIG. 8, the preheating time after reaching the first target temperature T1 of the second preheating profile 810 is t1-t a and the preheating time after reaching the first target temperature T1 of the first preheating profile 800 is t1-t0. a is t1-t 0 The time (t b -t a) may be shorter than the time (t2-t0) for maintaining the first target temperature T1 in the first preheating profile 800. Also, the second preheating profile 810 may be shorter than the time (t1-t b ) may be longer than the time (t1-t2) of the first preheating profile 800.

[0111] The length of the time period during which the first target temperature T1 of the second preheating profile is maintained and the time period during which the temperature is decreased to the second target temperature T2 is the same as the start temperature T a For example, the starting temperature T a If the time interval is high, increase the starting temperature T a If the temperature T is low, the length of the time interval is shortened. a can be adjusted by the value of

[0112] In an embodiment, the aerosol generating device supplies power to the heater according to a first preheating profile when the current heater temperature is lower than a reference temperature, i.e., when operating under normal conditions. The aerosol generating device supplies power to the heater according to a second preheating profile when the current heater temperature is equal to or higher than the reference temperature, i.e., when operating under conditions where the heater temperature is elevated. Here, conditions where the heater temperature is elevated include high ambient temperature, continuous use of the device, etc. Thus, the aerosol generating device adaptively selects a preheating profile according to the current heater temperature, thereby preventing the user from feeling a hot sensation during the initial puff and providing a sufficient amount of aerosol.

[0113] FIG. 9 is an exemplary diagram illustrating another example of the preheating section in the temperature profile shown in FIG.

[0114] 9, there is yet another second preheating profile 910 that is different from the second preheating profile 810 shown in FIG. 7. As shown in FIG. 9, the second preheating profile 900 has an initial starting temperature T aIf is higher than normal temperature, the delay time t d After t e The temperature is raised to the first target temperature T1 until t f The first target temperature T1 is maintained until time t1, and then the temperature is decreased to the second target temperature T2 until time t1.

[0115] In an embodiment, the second preheat profile 900 is a temperature T a Since it starts from a fixed delay time t d After t has elapsed e The temperature rises to the first target temperature T1 until the delay time t d The length of the heater depends on the measured temperature. For example, the initial starting temperature T a If is high, the delay time t d The length of the a If is low, the delay time t d The length of the delay time t d Depending on the length of the temperature drop, the length of the time period during which the first target temperature T1 is maintained or the length of the time period during which the temperature is lowered to the second target temperature T2 may be adjusted.

[0116] In an embodiment, the time (t f -t e ), or the time (t1-t f ) is longer than the time (t1-t0) for maintaining the first target temperature T1 in the first preheating profile shown in FIG. 8 and the time (t2-t1) for decreasing the temperature to the second target temperature T2, thereby making it possible to reduce the initial heat sensation felt by the user even when the initial heater temperature is high.

[0117] FIG. 10 is a flowchart illustrating a control method of an aerosol generating device according to another embodiment.

[0118] Referring to FIG. 10, in step 1000, the temperature of the heater is measured.

[0119] In step 1002, the measured heater temperature is compared with a reference temperature. If the heater temperature is lower than the reference temperature in step 1002, a first preheating profile is selected in step 1004. Here, the reference temperature can be set arbitrarily, for example, approximately 17°C, which corresponds to room temperature. Alternatively, the specified heater temperature may be compared with a specific temperature range, not a specific value. The first preheating profile is a preheating profile used under general conditions, and defines a predefined target temperature versus time.

[0120] If the measured heater temperature is equal to or higher than the reference temperature in step 1002, a second preheating profile is selected in step 1006. If the currently measured heater temperature is equal to or higher than the reference temperature, a second preheating profile different from the first preheating profile is selected. The second preheating profile has a longer time period for maintaining the temperature after reaching the target temperature and / or a longer time period for decreasing the temperature to a temperature lower than the target temperature than the first preheating profile.

[0121] In step 1008 , the heater is powered according to the preheat profile selected in step 1004 or step 1006 .

[0122] FIG. 11 is a flowchart illustrating a control method of an aerosol generating device according to yet another embodiment.

[0123] Referring to FIG. 11 , in step 1100, the insertion of a cigarette into the aerosol generating device is detected. By detecting the insertion of a cigarette, it is possible to predict that the aerosol generating device will be used. Furthermore, by detecting the insertion of a cigarette, it is possible to turn on the power of the aerosol generating device or start heating the heater. If a cigarette is inserted, in step 1002, it is determined whether continuous use is occurring. Continuous use means that a cigarette is inserted and a smoking series is completed once, and then the cigarette is inserted again within a predetermined time. Continuous use can be determined when the heater temperature is equal to or higher than a reference temperature. Furthermore, continuous use can be determined when it is detected that a cigarette is inserted again within a predetermined time after a smoking series is completed once.

[0124] If continuous use is not detected in step 1002, then in step 1004 the first preheat profile is selected.

[0125] If continuous use is detected in step 1002, then in step 1006 a second preheat profile is selected.

[0126] In step 1108 , the heater is powered according to the preheat profile selected in step 1004 or step 1006 .

[0127] FIG. 12 is a block diagram of an aerosol generating device according to yet another embodiment.

[0128] 12, the aerosol generating device 1200 includes a control unit 1210, a sensing unit 1220, an output unit 1230, a battery 1240, a heater 1250, a user input unit 1260, a memory 1270, and a communication unit 1280. However, the internal structure of the aerosol generating device 1200 is not limited to that shown in Fig. 6. That is, it will be understood by those skilled in the art 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 1200.

[0129] The sensing unit 1220 senses the state of the aerosol generating device 1200 or the state around the aerosol generating device 1200, and transmits the sensed information to the control unit 1210. Based on the sensed information, the control unit 1210 controls the aerosol generating device 1200 to perform various functions such as controlling the operation of the heater 1250, restricting smoking, determining whether or not to insert an aerosol product (e.g., cigarette, cartridge, etc.), and displaying notifications.

[0130] The sensing unit 1220 includes at least one of a temperature sensor 1222, an insertion sensor 1224, and a puff sensor 1226, but is not limited thereto.

[0131] The temperature sensor 1222 senses the temperature to which the heater 1250 (or the aerosol-generating material) is heated. The aerosol-generating device 1200 may include a separate temperature sensor that senses the temperature of the heater 1250, or the heater 1250 itself may function as a temperature sensor. Alternatively, the temperature sensor 1222 may be disposed around the battery 1240 to monitor the temperature of the battery 1240. In one embodiment, the temperature sensor 1222 measures the temperature of the heater 1250 before it is heated.

[0132] The insertion detection sensor 1224 detects the insertion and / or removal of an aerosol product. For example, the insertion detection sensor 1224 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 detects a signal change caused by the insertion and / or removal of an aerosol product. In an embodiment, the insertion detection sensor 1224 may determine that the aerosol product is being used continuously if it detects the insertion of an aerosol product again within a predetermined time after the smoking series has ended after detecting the insertion of the aerosol product.

[0133] The puff sensor 1226 detects a user's puff based on various physical changes in the airflow passage or channel, such as a temperature change, a flow rate change, a voltage change, or a pressure change.

[0134] The sensing unit 1220 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-described sensors 1222 to 1226. The function of each sensor can be intuitively inferred by a skilled artisan from its name, and therefore a detailed description thereof will be omitted.

[0135] The output unit 1230 outputs and provides to a user information about the status of the aerosol generating device 1200. The output unit 1230 includes, but is not limited to, at least one of a display unit 1232, a haptic unit 1234, and an audio output unit 1236. When the display unit 1232 and a touchpad are layered to form a touch screen, the display unit 1232 is used as an input device in addition to an output device.

[0136] The display unit 1232 visually provides a user with information about the aerosol generating device 1200. For example, the information about the aerosol generating device 1200 refers to various information such as the charge / discharge status of the battery 1240 of the aerosol generating device 1200, the preheating status of the heater 1250, the insertion / removal status of an aerosol product, or a status that restricts the use of the aerosol generating device 1200 (e.g., detection of an abnormal item), and the display unit 1232 outputs the information to the outside. The display unit 1232 is, for example, a liquid crystal display panel (LCD), an organic light emitting display panel (OLED), etc. The display unit 1232 may also be in the form of an LED light emitting element.

[0137] The haptic unit 1234 converts an electrical signal into a mechanical or electrical stimulus to tactilely provide the user with information about the aerosol generating device 1200. For example, the haptic unit 1234 includes a motor, a piezoelectric element, or an electrical stimulation device.

[0138] The acoustic output unit 1236 audibly provides the user with information about the aerosol generation device 1200. For example, the acoustic output unit 1236 converts an electrical signal into an acoustic signal and outputs it to the outside.

[0139] The battery 1240 supplies power used for the operation of the aerosol generating device 1200. The battery 1240 supplies power to the heater 1250 so that it can be heated. The battery 1240 also supplies power necessary for the operation of other components provided in the aerosol generating device 1200 (e.g., the sensing unit 1220, the output unit 1230, the user input unit 1260, the memory 1270, and the communication unit 1280). The battery 1240 is a rechargeable battery or a disposable battery. For example, the battery 1240 is a lithium polymer (Li Poly) battery, but is not limited thereto.

[0140] The heater 1250 receives power from the battery 1240 and heats the aerosol-generating material. Although not shown in Fig. 12, the aerosol-generating device 1200 further includes a power conversion circuit (e.g., a DC / DC converter) that converts the power of the battery 1240 and supplies it to the heater 1250. Furthermore, when the aerosol-generating device 1200 generates aerosol by an induction heating method, the aerosol-generating device 1200 further includes a DC / AC converter that converts the DC power of the battery 1240 into AC power.

[0141] The control unit 1210, the sensing unit 1220, the output unit 1230, the user input unit 1260, the memory 1270, and the communication unit 910 perform their functions by receiving power from a battery 1240. Although not shown in FIG. 12 , the device may further include a power conversion circuit, such as an LDO (low dropout) circuit or a voltage regulator circuit, that converts the power of the battery 1240 and supplies it to each component.

[0142] In one embodiment, heater 1250 is formed of any suitable electrically resistive material, such as, but not limited to, metals or metal alloys including titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, etc. Additionally, heater 130 may be embodied as, but not limited to, a metal hot wire, a metal hot plate with an electrically conductive track disposed thereon, a ceramic heating element, etc.

[0143] In another embodiment, heater 1250 is an induction heater, for example, heater 1250 includes a susceptor that generates heat through a magnetic field applied by a coil to heat the aerosol-generating material.

[0144] In one embodiment, there may be multiple heaters 1250. For example, heater 1250 may include a first heater for heating the cigarette and a second heater for heating the liquid phase.

[0145] The user input unit 1260 receives information input by a user or outputs information to a user. For example, the user input unit 1260 may be, but is not limited to, a keypad, a dome switch, a touchpad (such as a contact-type capacitance type, a pressure-type resistive film type, an infrared sensing type, a surface ultrasonic conduction type, an integral tension measurement type, or a piezoelectric effect type), a jog wheel, or a jog switch. Although not shown in FIG. 12 , the aerosol generating device 1200 may further include a connection interface such as a USB (universal serial bus) interface, through which the aerosol generating device 1200 can connect to other external devices to send and receive information or charge the battery 1240.

[0146] The memory 1270 is hardware that stores various data processed within the aerosol generating device 1200, and stores data processed by the control unit 1210 and data to be processed. The memory 1270 includes at least one type of recording medium selected from the group consisting of flash memory, hard disk, multimedia card micro, card-type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic disk, and optical disk. The memory 1270 stores the operating time of the aerosol generating device 1200, the maximum number of puffs, the current number of puffs, at least one temperature profile, and data related to the user's smoking pattern. In an embodiment, the memory 1270 stores a plurality of temperature profiles. The memory 1270 also stores a plurality of pre-heating profiles that define pre-heating sections among the temperature profiles. The memory 1270 stores a number of preheat profiles as described with reference to FIGS.

[0147] The communication unit 1280 includes at least one component for communication with other electronic devices. For example, the communication unit 1280 includes a short-range communication unit 1282 and a wireless communication unit 1284.

[0148] The short-range communication unit 1282 includes, but is not limited to, a Bluetooth (registered trademark) communication unit, a BLE (Bluetooth (registered trademark) Low Energy) communication unit, a short-range wireless communication unit, a WLAN (Wi-Fi) communication unit, a ZigBee communication unit, an infrared (IrDA, infrared Data Association) communication unit, a WFD (Wi-Fi Direct) communication unit, a UWB (ultra wideband) communication unit, an Ant+ communication unit, etc.

[0149] The wireless communication unit 1284 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 1284 may use subscriber information (e.g., an International Mobile Subscriber Identity (IMSI)) to identify and authenticate the aerosol generating device 1200 within the communication network.

[0150] The controller 1210 controls the overall operation of the aerosol generating device 1200. In one embodiment, the controller 1210 includes at least one processor. The processor may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory in which a program executed by the microprocessor is stored. Those skilled in the art will understand that the controller 1210 may also be implemented as other types of hardware.

[0151] The control unit 1210 controls the temperature of the heater 1250 by controlling the supply of power from the battery 1240 to the heater 1250. For example, the control unit 1210 controls the power supply by controlling the switching of switching elements between the battery 1240 and the heater 1250. In another example, a heating direct circuit may control the power supply to the heater 1250 in accordance with a control command from the control unit 1210.

[0152] When the operation of the aerosol generating device 1200 is started, the control unit 1210 controls the power supply to the heater 1250 according to a predetermined temperature profile or a predetermined preheating profile.

[0153] In this embodiment, when the operation of the aerosol generating device 1200 is initiated or an aerosol product is inserted, the controller 1210 measures the current temperature of the heater 1250 via the temperature sensor 1222. If the temperature of the heater 1250 is equal to or higher than the reference temperature, the controller 1210 loads a predetermined preheating profile, i.e., a second preheating profile different from the first preheating profile, from the memory 1270 and controls the power supply to the heater 1250 according to the second preheating profile.

[0154] In an embodiment, the control unit 1210 controls the power supply to the heater 1250 using a proportional-integral-differential (PID) control method. That is, the control unit 1210 controls the power supply to the heater 1250 using a PID control method so that the heater 1250 has a temperature corresponding to a set temperature profile. For example, the control unit 1210 adjusts a parameter Kp for proportional control, a parameter Ki for integral control, and a parameter Kd for differential control, or adjusts at least one of these parameters, to supply power so that the temperature of the heater 1250 reaches a target temperature during a time period corresponding to a temperature increase section according to the temperature profile.

[0155] The controller 1210 analyzes the results sensed by the sensing unit 1220 and controls subsequent processing. For example, the controller 1210 controls the power supplied to the heater 1250 to start or stop the operation of the heater 1250 based on the results sensed by the sensing unit 1220. As another example, the controller 1210 controls the amount of power supplied to the heater 1250 and the time for which the power is supplied based on the results sensed by the sensing unit 1220 to heat the heater 1250 to a predetermined temperature or maintain an appropriate temperature.

[0156] The control unit 1210 controls the output unit 1230 based on the result sensed by the sensing unit 1220. For example, when the number of puffs counted through the puff sensor 1226 reaches a predetermined number, the control unit 1210 notifies the user through at least one of the display unit 1232, the haptic unit 1234, and the audio output unit 1236 that the aerosol generating device 1200 will soon be finished.

[0157] In one embodiment, the control unit 1210 controls the time and / or amount of power supplied to the heater 1250 depending on the state of the aerosol product sensed by the sensing unit 1220. For example, when the aerosol product 15 is in an overly humid state, the control unit 1210 controls the time of power supply to the induction coil to increase the preheating time compared to when the aerosol product 15 is in a normal state.

[0158] 13 to 16 are diagrams for explaining the preheating mode of the aerosol generating device shown in FIG.

[0159] 13, the aerosol product 200 is inserted into the receiving portion of the aerosol generating device 100. Here, a cigarette-type aerosol product is inserted vertically as an example, but the present invention is not limited to this. The display unit 1232 displays display information or indicators such as the status, condition, and user information of the aerosol generating device 100. Here, the display information or indicators are icons or text. As shown in FIG. 13, the display unit 1232 is in an off state before the aerosol product 200 is received in the aerosol generating device 100.

[0160] 14, when an aerosol product 200 is received in the receiving section of the aerosol generating device 100, the aerosol generating device 100 detects the reception of the aerosol product 200 and changes the display unit 1232 from an off state to an on state. In this case, the aerosol generating device 100 is turned on or starts a heating operation. Then, power supply to the heater is started.

[0161] In this embodiment, when the aerosol product 200 is inserted, the heater temperature is measured. If the heater temperature is lower than the reference temperature, the aerosol generating device 100 loads a first preheating profile from the memory 1270 and supplies power to the heater 1250 according to the first preheating profile. Here, the first preheating profile defines the preheating time and preheating temperature for preheating the heater under general conditions.

[0162] 15, the aerosol generating device 100 displays display information 1500 indicating that the heater 1250 is being preheated according to the first preheating profile on the display unit 1232. When the preheating of the heater according to the first preheating profile is completed (e.g., when the heating time defined in the first preheating profile is reached), the aerosol generating device 100 displays display information indicating that the preheating is completed on the display unit 1232 or outputs a notification such as a vibration through the haptic unit 1234.

[0163] In an embodiment, when the heater temperature is equal to or higher than the reference temperature, the aerosol generation device 100 loads a second pre-heating profile from the memory 1270 and supplies power to the heater 1250. Here, the second pre-heating profile defines the pre-heating time and pre-heating temperature for pre-heating the heater when the heater temperature is high, for example, in the case of continuous use. That is, after the aerosol product 200 is placed and the first smoking series is completed, if another aerosol product 200 is placed within a few seconds after the aerosol product 200 is separated, the temperature of the heater 1250 will be higher than when the aerosol product 200 was first placed due to the influence of the first smoking series or residual heat of the heater 1250. Therefore, in such a case, the aerosol generation device 100 loads a second pre-heating profile different from the first pre-heating profile from the memory 1270 and supplies power to the heater 1250 according to the second pre-heating profile. Therefore, the heat sensation caused by the high temperature of the heater can be reduced at the beginning of the second smoking series, and a sufficient amount of aerosol can be provided to the user.

[0164] 16, the aerosol generating device 100 displays display information 1600 indicating that the heater 1250 is being preheated according to the second preheating profile on the display unit 1232. When the preheating of the heater according to the second preheating profile is completed (e.g., when the preheating time defined in the second preheating profile is reached), the aerosol generating device 100 displays display information indicating that the preheating is completed on the display unit 1232 or outputs a notification such as a vibration through the haptic unit 1234.

[0165] An embodiment may also be embodied in the form of a recording medium containing computer-executable instructions, such as a program module executed by a computer. Computer-readable media are any available media accessible by a computer, including both volatile and nonvolatile media, and detachable and non-detachable media. Computer-readable media also include both computer recording media and communication media. Computer recording media include both volatile and non-volatile, detachable and non-detachable media embodied in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Communication media typically include computer-readable instructions, data structures, program modules, or other data in a modulated data signal, or other transmission mechanism, and include any information delivery media.

[0166] The above description of the embodiments is merely illustrative, and those skilled in the art will understand that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the invention should be determined by the appended claims, and all differences within the scope of the claims should be construed as being included in the scope of protection defined by the claims.

Claims

1. In the aerosol generating device, a heater for heating at least a portion of the aerosol product; a temperature sensor for measuring the temperature of the heater; a processor for controlling power supply to the heater according to a first preheat profile defining a predetermined preheat time and preheat temperature; The processor: When the temperature of the heater is equal to or higher than a reference temperature, controlling the power supply to the heater according to a second preheating profile different from the first preheating profile; a target temperature of the second preheating profile is the same as a target temperature of the first preheating profile; An aerosol generating device, wherein a time period for lowering the temperature to a temperature lower than the target temperature is set longer in the second preheating profile than in the first preheating profile.

2. The processor: The aerosol generating device according to claim 1 , wherein when the temperature of the heater is equal to or higher than the reference temperature, it is determined that continuous smoking has occurred.

3. The processor:

3. The aerosol generating device of claim 2, wherein when the insertion of the aerosol product is detected, the temperature of the heater is measured to determine whether the temperature of the heater is equal to or higher than the reference temperature.

4. An aerosol generating device as described in claim 1, wherein the time interval for reaching the target temperature is set shorter in the second preheating profile than in the first preheating profile.

5. An aerosol generating device as described in claim 1, wherein the time interval for maintaining the target temperature is set longer in the second preheating profile than in the first preheating profile.

6. The processor: The aerosol generating device according to claim 1 , wherein when the temperature of the heater is equal to or higher than the reference temperature, the power supply to the heater is controlled according to the second preheating profile after a predetermined delay time has elapsed.

7. The processor: The aerosol generating device according to claim 6 , wherein the length of the delay time is set to vary depending on the temperature of the heater.

8. a display that displays a preheating mode of the aerosol generating device; The processor: The aerosol generating device according to claim 1 , wherein the device is controlled so that the preheating mode according to the first preheating profile or the preheating mode according to the second preheating profile is displayed on the display.

9. The processor: The aerosol generating device according to claim 8 , wherein when the pre-heating time according to the first pre-heating profile or the second pre-heating profile is reached, the device is controlled to output a notification corresponding to completion of pre-heating on the display.

10. 1. A method for controlling an aerosol generating device, comprising: measuring the temperature of a heater that heats at least a portion of the aerosol product; determining whether the temperature of the heater is equal to or higher than a reference temperature; If the temperature of the heater is equal to or higher than the reference temperature, controlling the power supply to the heater according to a second preheating profile different from the first preheating profile; a target temperature of the second preheating profile is the same as a target temperature of the first preheating profile; A method for controlling an aerosol generating device, wherein the time period for lowering the temperature to a temperature lower than the target temperature is set longer in the second preheating profile than in the first preheating profile.

11. The determining step includes: The method for controlling an aerosol generating device according to claim 10, wherein when the temperature of the heater is equal to or higher than the reference temperature, it is determined that the smoking is continuous.

12. further comprising the step of detecting insertion of the aerosol product article; 11. The method for controlling an aerosol generating device according to claim 10, further comprising measuring the temperature of the heater when the insertion of the aerosol product is detected, and determining whether the temperature of the heater is equal to or higher than the reference temperature.

13. The time interval for reaching the target temperature is set shorter in the second preheating profile than in the first preheating profile, The method for controlling an aerosol generating device according to claim 10 , wherein a time period for maintaining the target temperature is set longer in the second preheating profile than in the first preheating profile.

14. The method for controlling an aerosol generating device according to claim 10, wherein, when the temperature of the heater is equal to or higher than the reference temperature, the power supply to the heater is controlled according to the second preheating profile after a predetermined delay time has elapsed.

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