Aerosol generating device

Abstract

An aerosol generating device is disclosed. The aerosol generating device of the present disclosure includes a heater for heating an aerosol generating substance, a power supply circuit for supplying power to the heater, a resistance detection sensor for detecting the resistance of the heater, and a control unit. When a predetermined stage for the resistance of the heater is completed, the control unit calculates the temperature of the heater via the resistance detection sensor. When the predetermined stage is not completed, the control unit controls the power supply circuit so that the heater is heated corresponding to a predetermined first temperature in a first section. When the first section ends, the control unit controls the power supply circuit so that the heater is heated corresponding to a second temperature different from the first temperature in a second section. When the second section ends, the control unit determines whether the predetermined stage is completed.

Description

Technical Field

[0001] The present disclosure relates to an aerosol generating device.

Background Art

[0002] An aerosol generating device is for extracting a predetermined component from a medium or a substance through an aerosol. The medium can contain substances with various components. The substances contained in the medium can be flavor substances with various components. For example, the substances contained in the medium can include a nicotine component, a herb component, and / or a coffee component, etc. In recent years, many studies have been conducted on such aerosol generating devices.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The present disclosure aims to solve the above-mentioned problems and other problems.

[0004] Another object of the present disclosure is to provide an aerosol generating device capable of accurately calculating the temperature of a heater based on the resistance of the heater.

[0005] Still another object of the present disclosure is to provide an aerosol generating device capable of calculating the resistance of a heater to be constant under certain conditions based on the result of heating the heater corresponding to a plurality of modes.

Means for Solving the Problems

[0006] An aerosol generating device according to one aspect of the present disclosure for achieving the above object may include a heater for heating an aerosol generating substance, a power supply circuit for supplying power to the heater, a resistance detection sensor for detecting the resistance of the heater, and a control unit. When a predetermined stage for the resistance of the heater is completed, the control unit calculates the temperature of the heater via the resistance detection sensor. When the predetermined stage is not completed, the control unit controls the power supply circuit so that the heater is heated corresponding to a predetermined first temperature in a first section. When the first section ends, the control unit controls the power supply circuit so that the heater is heated corresponding to a second temperature different from the first temperature in a second section. When the second section ends, it is possible to determine whether the predetermined stage is completed.

Advantages of the Invention

[0007] According to at least one of the embodiments of the present disclosure, the temperature of the heater can be accurately calculated based on the resistance of the heater.

[0008] According to at least one of the embodiments of the present disclosure, based on the result of heating the heater corresponding to a plurality of modes, the resistance of the heater can be calculated to be constant under certain conditions.

[0009] The applicable additional scope of the present disclosure will become apparent from the following detailed description. However, various changes and modifications within the spirit and scope of the present disclosure will be clearly understandable to those skilled in the art. Therefore, the detailed description and specific examples such as the preferred embodiments of the present disclosure should be understood as being given by way of illustration only.

Brief Description of the Drawings

[0010] The above and other objects, features and other features of the present disclosure will be clearly understandable from the following detailed description with reference to the accompanying drawings.

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Modes for Carrying Out the Invention

[0012] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. The same or similar components are given the same reference numerals even if they are illustrated in different drawings, and duplicate descriptions thereof are omitted.

[0013] Suffixes “module” and “unit” for components used in the following description are used only for the ease of description in this specification. “Module” and “unit” do not have different meanings or roles from each other.

[0014] In addition, in the following description of the embodiments disclosed in this specification, if a detailed description of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. Also, the accompanying drawings are provided to facilitate understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the accompanying drawings. Therefore, the accompanying drawings should be construed to include all modifications, equivalents, and alternatives included in the spirit and scope of the present disclosure.

[0015] Terms including ordinal numbers such as first, second, etc. can be used to describe various components, but it should be understood that the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

[0016] When referring to a certain component being "connected" to another component, it can be understood that other components may exist in between. On the other hand, when referring to a certain component being "directly connected" to another component, it can be understood that no other components exist in between.

[0017] Singular expressions include plural expressions unless otherwise clearly indicated in the context.

[0018] FIG. 1 is a block diagram of an aerosol generating device according to an embodiment of the present disclosure.

[0019] Referring to FIG. 1, the aerosol generating device 10 may include a communication interface 11, an input / output interface 12, an aerosol generation module 13, a memory 14, a sensor module 15, a battery 16, and / or a control unit 17.

[0020] In one embodiment, the aerosol generating device 10 can be composed of only the main body. In this case, the components included in the aerosol generating device 10 can be located in the main body. In another embodiment, the aerosol generating device 10 can be composed of a cartridge for storing the aerosol generating substance and the main body. In this case, the components included in the aerosol generating device 10 can be located in at least one of the main body and the cartridge.

[0021] The communication interface 11 can include at least one communication module for communication with an external device and / or a network. For example, the communication interface 11 can include a communication module for wired communication such as USB (universal serial bus). For example, the communication interface 11 can include communication modules for wireless communication such as WiFi (wireless fidelity), Bluetooth (registered trademark), Bluetooth (registered trademark) Low Energy (BLE), Zigbee (registered trademark), NFC (near field communication).

[0022] The input / output interface 12 can include an input device for receiving commands from the user and / or an output device for outputting information to the user. For example, the input device can include a touch panel, physical buttons, a microphone, etc. For example, the output device can include a display device for outputting visual information such as a display, a light emitting diode (LED), an audio device for outputting auditory information such as a speaker, a buzzer, and a motor for outputting tactile information such as a tactile effect.

[0023] The input / output interface 12 can transmit data corresponding to a command input from the user via the input device to other components (etc.) of the aerosol generating device 10. The input / output interface 12 can output information corresponding to the data received from other components (etc.) of the aerosol generating device 10 via the output device.

[0024] The aerosol generation module 13 can generate an aerosol from an aerosol generating substance. Here, the aerosol generating substance can be any one substance or a combination of two or more substances in various states such as a liquid state, a solid state, or a gel state that can generate an aerosol.

[0025] The aerosol generating substance in the liquid state can be, according to one embodiment, a liquid containing a tobacco-containing substance including a volatile tobacco flavor component. The aerosol generating substance in the liquid state can be, according to other embodiments, a liquid containing a non-tobacco substance. For example, the aerosol generating substance in the liquid state can include water, a solvent, nicotine, a plant extract, a fragrance, a flavoring agent, a vitamin mixture, etc.

[0026] The aerosol generating substance in the solid state can include a solid substance based on a tobacco raw material such as a reconstituted tobacco sheet, shredded tobacco, granular tobacco, etc. Also, the aerosol generating substance in the solid state can include a solid substance containing a taste regulator, a seasoning, etc. For example, the taste regulator can include calcium carbonate, sodium bicarbonate, calcium oxide, etc. For example, the seasoning can include natural substances such as herb granules, silica containing a fragrance component, zeolite, dextrin, etc.

[0027] Also, the aerosol generating substance can further include an aerosol former such as glycerin or propylene glycol.

[0028] The aerosol generation module 13 can include at least one heater.

[0029] The aerosol generation module 13 can include an electric resistance heater. For example, the electric resistance heater can include at least one electrically conductive track, and can be heated by the current flowing through the electrically conductive track. Here, the aerosol generating substance can be heated by the heated electric resistance heater.

[0030] The electrically conductive track can include an electrically resistive substance. As an example, the electrically conductive track can be formed from a metallic substance. As another example, the electrically conductive track can be formed from a ceramic substance, carbon, a metal alloy, or a composite substance of a ceramic substance and a metal.

[0031] The electric resistance heater can include electrically conductive tracks formed in various shapes. For example, the electrically conductive track can be formed into any one of a tubular shape, a plate shape, a needle shape, a rod shape, and a coil shape.

[0032] The aerosol generation module 13 can include a heater using an induction heating method. For example, the induction heating type heater can include an electrically conductive coil, and by adjusting the current flowing through the electrically conductive coil, an alternating magnetic field whose direction periodically changes can be generated. Here, when the alternating magnetic field is applied to a magnetic body, energy loss due to eddy current loss and hysteresis loss may occur in the magnetic body, and the aerosol generating substance adjacent to the magnetic body can be heated by the energy released as thermal energy. Here, the object that generates heat by the magnetic field can be said to be a susceptor.

[0033] On the other hand, the aerosol generation module 13 can also generate an aerosol from the aerosol generating substance by generating ultrasonic vibrations.

[0034] The aerosol generation module 13 can be a cartomizer, an atomizer, a vaporizer, etc.

[0035] The memory 14 can store programs for each signal processing and control within the control unit 17, and can store the data processed by the control unit 17 and the data to be processed.

[0036] For example, the memory 14 stores application programs designed for the purpose of executing various operations that can be processed by the control unit 17, and can selectively provide a part of the stored application programs when requested by the control unit 17.

[0037] For example, the memory 14 can store the operating time of the aerosol generation device 10, the maximum puff count, the current puff count, the charging count of the battery 16, the discharge count of the battery 16, at least one temperature profile, data about the user's inhalation pattern, data about charge and discharge, etc. Here, a puff can mean the user's inhalation, and inhalation can be a situation where the user draws in through the mouth or nose into the oral cavity, nasal cavity, or lungs of the user.

[0038] The memory 14 can include at least one of a volatile memory (e.g., DRAM, SRAM, SDRAM, etc.) and a non-volatile memory (e.g., Flash memory, Hard disk drive (HDD), Solid-state drive (SSD), etc.).

[0039] The sensor module 15 can include at least one sensor.

[0040] For example, the sensor module 15 can include a sensor for sensing puff (hereinafter referred to as a puff sensor). Here, the puff sensor can be embodied by a proximity sensor such as an IR sensor, a pressure sensor, a gyro sensor, an acceleration sensor, a magnetic field sensor, or the like.

[0041] For example, the sensor module 15 can include a sensor for sensing puff (hereinafter referred to as a puff sensor). Here, the puff sensor can be embodied by a pressure sensor, a gyro sensor, an acceleration sensor, a magnetic field sensor, or the like.

[0042] For example, the sensor module 15 can include a sensor for sensing the temperature of the heater included in the aerosol generation module 13, the temperature of the aerosol product substance, etc. (hereinafter referred to as a temperature sensor). Here, the heater included in the aerosol generation module 13 can also serve as a temperature sensor. For example, the electrically resistive substance of the heater may be a substance having a temperature coefficient of resistance. The sensor module 15 can sense the temperature of the heater by measuring the resistance of the heater that changes with temperature.

[0043] For example, when a stick can be inserted into the main body of the aerosol generation device 10, the sensor module 15 can include a sensor for sensing the insertion of the stick (hereinafter referred to as a stick sensing sensor).

[0044] For example, when the aerosol generation device 10 includes a cartridge, the sensor module 15 can include a sensor for sensing the attachment / detachment, position, etc. of the cartridge to the main body (hereinafter referred to as a cartridge sensing sensor).

[0045] Here, the stick sensor and / or the cartridge sensor can be implemented by an inductor-based sensor, a capacitive sensor, a resistive sensor, a Hall IC using the Hall effect, or the like.

[0046] For example, the sensor module 15 can include a voltage sensor that senses the voltage applied to a configuration (e.g., the battery 16) provided in the aerosol generating device 10 and / or a current sensor that senses current.

[0047] The battery 16 can supply power for the operation of the aerosol generating device 10 under the control of the control unit 17. The battery 16 can supply power to other configurations provided in the aerosol generating device 10. For example, the battery 16 can supply power to a communication module included in the communication interface 11, an output device included in the input / output interface 12, a heater included in the aerosol generation module 13, and the like.

[0048] The battery 16 can be a rechargeable battery or a disposable battery. For example, the battery 16 can be a lithium-ion battery or a lithium polymer (Li-Polymer) battery, but is not limited thereto. For example, when the battery 16 is rechargeable, the charge rate (C-rate) of the battery 16 can be 10C, and the discharge rate (C-rate) can be 10C to 20C, but is not limited thereto. Also, for stable use, the battery 16 can be manufactured so as to ensure 80% or more of the total capacity even when charging and discharging are performed 2000 times.

[0049] The aerosol generating device 10 may further include a protection circuit module (PCM), which is a circuit for protecting the battery 16. The protection circuit module (PCM) may be disposed adjacent to the upper surface of the battery 16. For example, the protection circuit module (PCM) can cut off the circuit to the battery 16 when a short circuit occurs in the circuit connected to the battery 16, when an overvoltage is applied to the battery 16, when an overcurrent flows through the battery 16, etc., in order to prevent overcharging and overdischarging of the battery 16.

[0050] The aerosol generating device 10 may further include a charging terminal to which externally supplied power is input. For example, a charging terminal is formed on one side of the main body of the aerosol generating device 10, and the aerosol generating device 10 can charge the battery 16 using the power supplied through the charging terminal. Here, the charging terminal may be composed of a wired terminal for USB communication, a pogo pin, etc.

[0051] The aerosol generating device 10 can also wirelessly receive externally supplied power via the communication interface 11. For example, the aerosol generating device 10 can wirelessly receive power using an antenna included in a communication module for wireless communication, and can charge the battery 16 using the wirelessly supplied power.

[0052] The control unit 17 can control the overall operation of the aerosol generating device 10. The control unit 17 is connected to each component provided in the aerosol generating device 10, and can transmit and / or receive signals to and from each component to control the overall operation of each component.

[0053] The control unit 17 can include at least one processor, and can control the overall operation of the aerosol generating device 10 using the processor. Here, the processor may be a general processor such as a CPU (central processing unit). Of course, the processor can be a dedicated device such as an ASIC or a processor based on other hardware platforms.

[0054] The control unit 17 can perform any one of a plurality of functions of the aerosol generating device 10. For example, the control unit 17 can execute any one of a plurality of functions of the aerosol generating device 10 (for example, preheating function, heating function, charging function, cleaning function, etc.) according to the state of each component provided in the aerosol generating device 10, the user's command received via the input / output interface 12, and the like.

[0055] The control unit 17 can control the operation of each component provided in the aerosol generating device 10 based on the data stored in the memory 14. For example, the control unit 17 can control to supply a predetermined amount of power from the battery 16 to the aerosol generation module 13 for a predetermined time based on the temperature profile, the user's inhalation pattern, and other data stored in the memory 14.

[0056] The control unit 17 can determine the occurrence of puff through the puff sensor included in the sensor module 15. For example, the control unit 17 can check the temperature change, flow change, pressure change, voltage change, etc. inside the aerosol generating device 10 based on the sensing value of the puff sensor, and can determine the occurrence of puff according to the checked result based on the sensing value of the puff sensor.

[0057] The control unit 17 can control the operations of each component provided in the aerosol generating device 10 according to the presence or absence of puffing and / or the number of puffs. For example, the control unit 17 can control the temperature of the heater to be changed or maintained based on the temperature profile stored in the memory 14.

[0058] The control unit 17 can control to cut off the power supply to the heater under predetermined conditions. For example, when the stick is removed and the cartridge is separated, when the number of puffs reaches the preset maximum number of puffs, when no puff is detected for a preset time or more, when the remaining amount of the battery 16 is less than a predetermined value, etc., the control unit 17 can control to cut off the power supply to the heater.

[0059] The control unit 17 can calculate the remaining amount of power stored in the battery 16 (hereinafter referred to as the remaining amount). For example, the control unit 17 can calculate the remaining amount of the battery 16 based on the sensing values of the voltage sensor and / or current sensor included in the sensor module 15.

[0060] The control unit 17 can control to supply power to the heater using at least one of the pulse width modulation (PWM) method and the proportional-integral-differential (PID) method.

[0061] For example, the control unit 17 can control using the PWM method so that a current pulse having a predetermined frequency and duty ratio is supplied to the heater. Here, the control unit 17 can control the power supplied to the heater by adjusting the frequency and duty ratio of the current pulse.

[0062] For example, the control unit 17 can determine a target temperature that is the target of control based on the temperature profile. Here, the control unit 17 uses a PID method, which is a feedback control method based on the difference value between the temperature of the heater and the target temperature, the value obtained by integrating the difference value over time, and the value obtained by differentiating the difference value over time, to control the power supplied to the heater.

[0063] On the other hand, as control methods for supplying power to the heater, the PWM method and the PID method have been described as examples, but the present invention is not limited thereto, and various control methods such as a proportional-integral (PI) method and a proportional-differential (PD) method can be used.

[0064] On the other hand, the control unit 17 can control to supply power to the heater under preset conditions. For example, when a cleaning function for cleaning the space where the stick is inserted is selected according to an instruction input from the user via the input / output interface 12, the control unit 17 can control to supply predetermined power to the heater.

[0065] Figures 2 to 4 are diagrams for explaining an aerosol generating device according to an embodiment of the present disclosure.

[0066] According to various embodiments of the present invention, the aerosol generating device 10 can include a main body 100 and / or a cartridge 200.

[0067] Referring to Figure 2, an aerosol generating device 10 according to an embodiment can include a main body 100 and a cartridge 200. The main body 100 supports the cartridge 200, and the cartridge 200 can contain an aerosol generating substance.

[0068] According to one embodiment, the cartridge 200 can be configured to be detachable from the main body 100. According to other embodiments, the cartridge 200 can be configured to be integral with the main body 100. For example, at least a part of the cartridge 200 can be inserted into the internal space formed by the housing 101 of the main body 100, whereby the cartridge 200 can be attached to the main body 100.

[0069] The main body 100 can be formed in a structure that allows external air to flow into the inside of the main body 100 with the cartridge 200 inserted therein. Here, the external air flowing into the main body 100 can flow through the cartridge 200 to the user's mouth.

[0070] The control unit 17 can determine the attachment / detachment of the cartridge 200 by means of a cartridge detection sensor included in the sensor module 15. For example, the cartridge detection sensor can transmit a pulse current through one terminal connected to the cartridge 200. Here, the cartridge detection sensor can detect the connection state of the cartridge 200 based on whether a pulse current is received through the other terminal.

[0071] The cartridge 200 can include a heater 210 for heating the aerosol generating substance and / or a storage unit 220 for storing the aerosol generating substance. For example, a liquid transfer means impregnated (containing) with the aerosol generating substance can be disposed inside the storage unit 220. The electrical conductive track of the heater 210 can be formed in a structure that winds around the liquid transfer means. Here, the liquid transfer means can be heated by the heater 210 to generate an aerosol. Here, the liquid transfer means can include a wick made of cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0072] The cartridge 200 can include a mouthpiece 225. Here, the mouthpiece 225 can be a part inserted into the user's oral cavity. The mouthpiece 225 can have discharge holes through which the aerosol is discharged to the outside during puffing.

[0073] Referring to FIG. 3, the cartridge 200 can include an insertion space 230 configured to be insertable with the stick 20. For example, the cartridge 200 can include an insertion space formed by an inner wall (not shown) extending in the circumferential direction along the direction in which the stick 20 is inserted. Here, the insertion space can be formed by the inner side of the inner wall being open vertically. The stick 20 can be inserted into the insertion space 230 formed by the inner wall.

[0074] The insertion space into which the stick 20 is inserted can be formed in a shape corresponding to a part of the shape of the stick 20 inserted into the insertion space. For example, when the stick 20 is formed in a cylindrical shape, the insertion space can be formed in a cylindrical shape.

[0075] When the stick 20 is inserted into the insertion space, the outer peripheral surface of the stick 20 can be surrounded by and in contact with the inner wall.

[0076] A part of the stick 20 is inserted into the insertion space 230 of the cartridge 200, and the remaining part can be exposed to the outside.

[0077] The user can inhale the aerosol with one end of the stick 20 held in the mouth. The aerosol generated by the heater 110 can be transmitted through the stick 20 to the user's mouth. Here, while the aerosol passes through the stick 20, the substance contained in the stick 20 is added to the aerosol, and the aerosol with the substance added can be inhaled into the user's oral cavity through one end of the stick 20.

[0078] The control unit 17 can monitor the puff count based on the sensing value of the puff sensor from the time when the stick 20 is inserted.

[0079] When the inserted stick 20 is removed, the control unit 17 can initialize the current puff count stored in the memory 14.

[0080] The cartridge 200 can include a second heater 215 that heats the stick 20. The second heater 215 can be disposed at a position within the cartridge 200 corresponding to the position of the stick 20 when the stick 20 is inserted into the insertion space 230. The second heater 215 can be composed of an electrically conductive heater and / or an induction heating type heater. The second heater 215 can heat the inside and / or outside of the stick 20 using the power supplied from the battery 16.

[0081] Referring to FIG. 4, an aerosol generating device 100 according to an embodiment can include a main body 100 that supports a cartridge 200, and a cartridge 200 that stores an aerosol generating substance. The main body 100 can be configured such that the stick 20 can be inserted into the insertion space 130.

[0082] The aerosol generating device 100 can include a first heater 210 that heats the aerosol generating substance stored in the cartridge 200 and a second heater 115 that heats the stick 20 inserted into the main body 100, respectively. For example, the aerosol generating device 100 can generate an aerosol by heating the aerosol generating substance stored in the cartridge 200 and the stick 20 using the first heater 210 and the second heater 115, respectively.

[0083] The stick 20 can be similar to a general combustion type cigarette. For example, the stick 20 can be divided into a first portion containing an aerosol generating substance and a second portion containing a filter or the like. Alternatively, the second portion of the stick 20 can also contain an aerosol generating substance. For example, an aerosol generating substance formed in the form of granules or capsules can be inserted into the second portion.

[0084] Hereinafter, an example in which the stick 20 is inserted into the insertion space 130 formed in the housing 101 of the main body 100 will be described.

[0085] FIGS. 5 and 6 are diagrams illustrating a stick according to an embodiment of the present disclosure.

[0086] Referring to FIG. 5, a cigarette 20 according to an embodiment can include a tobacco rod 21 and a filter rod 22. The first part described above with reference to FIG. 4 can include the tobacco rod 21. The second part described above based on FIG. 4 can include the filter rod 22.

[0087] Although the filter rod 22 is shown as a single segment in FIG. 5, it is not limited thereto. In other words, the filter rod 22 can be composed of a plurality of segments. For example, the filter rod 22 can include a first segment for cooling the aerosol and a second segment for filtering a predetermined component contained in the aerosol. Also, if necessary, the filter rod 22 can further include at least one segment that performs other functions.

[0088] The diameter of the stick 20 can be in the range of 5 mm to 9 mm and the length can be about 48 mm, but it is not limited thereto. For example, the length of the tobacco rod 21 can be about 12 mm, the length of the first segment of the filter rod 22 can be about 10 mm, the length of the second segment of the filter rod 22 can be about 14 mm, and the length of the third segment of the filter rod 22 can be about 12 mm, but it is not limited thereto.

[0089] The stick 20 can be wrapped by at least one wrapper 24. At least one hole through which external air can flow in or internal gas can flow out can be formed in the wrapper 24. As an example, the stick 20 can be wrapped by one wrapper 24. As another example, the stick 20 can be wrapped in a superimposed manner by two or more wrappers 24. For example, the tobacco rod 21 can be wrapped by the first wrapper 241. For example, the filter rod 22 can be wrapped by the wrappers 242, 243, and 244. The tobacco rod 21 and the filter rod 22 wrapped by individual wrappers can be joined, and the entire stick 20 can be further wrapped by the third wrapper. If each of the filter rods 22 is composed of a plurality of segments, each segment can be wrapped by an individual wrapper 242, 243, 244. The entire stick 20 formed by joining the segments wrapped by individual wrappers can be further wrapped by another wrapper.

[0090] The first wrapper 241 and the second wrapper 242 can be made from a general filter wrapping paper. For example, the first wrapper 241 and the second wrapper 242 can be porous wrapping paper or non-porous wrapping paper. Also, the first wrapper 241 and the second wrapper 242 can be made from oil-resistant papers and / or aluminum laminate wrapping materials.

[0091] The third wrapper 243 can be made from hard wrapping paper. For example, the basis weight of the third wrapper 243 can be included in the range of 88 g / m 2 ~96 g / m 2 For example, the basis weight of the third wrapper 243 can be included in the range of 90 g / m 2 ~94 g / m 2 For example, the thickness of the third wrapper 243 can be included in the range of 120 μm to 130 μm. For example, the thickness of the third wrapper 243 can be 125 μm.

[0092] The fourth wrapper 244 can be made from oil-resistant hard wrapping paper. For example, the basis weight of the fourth wrapper 244 can be included in the range of 88 g / m 2 ~96 g / m 2may be included in the range. For example, the basis weight of the fourth wrapper 244 is 90 g / m 2 ~94 g / m 2 may be included in the range. Also, the thickness of the fourth wrapper 244 may be included in the range of 120 μm to 130 μm. For example, the thickness of the fourth wrapper 244 may be 125 μm.

[0093] The fifth wrapper 245 can be made of sterilized paper (MFW). Here, the sterilized paper (MFW) can be paper specially manufactured so that its tensile strength, water resistance, smoothness, etc. are improved compared to general paper. For example, the basis weight of the fifth wrapper 245 is 57 g / m 2 ~63 g / m 2 may be included in the range. For example, the basis weight of the fifth wrapper 245 may be 60 g / m 2 The thickness of the fifth wrapper 245 may be included in the range of 64 μm to 70 μm. For example, the thickness of the fifth wrapper 245 may be 67 μm.

[0094] The fifth wrapper 245 can contain a predetermined substance. Here, an example of the predetermined substance can be, but is not limited to, silicon. For example, silicon can have properties such as heat resistance with little change due to temperature, oxidation resistance without oxidation, resistance to various chemicals, water repellency to water, or electrical insulation. However, even if it is not silicon, any substance having the above-described properties can be applied or coated on the fifth wrapper 245 without limitation.

[0095] The fifth wrapper 245 can prevent the phenomenon of the stick 20 burning. For example, when the tobacco rod 21 is heated by the heater 210, the stick 20 may burn. Specifically, when the temperature rises above the ignition point of any one of the materials contained in the tobacco rod 21, the stick 20 may burn. Even in such a case, since the fifth wrapper 245 contains a non-combustible substance, the phenomenon of the stick 20 burning can be prevented.

[0096] In addition, the fifth wrapper 245 can prevent the main body 100 from being contaminated by the substances generated by the stick 20. Depending on the user's puff, a liquid substance can be generated within the stick 20. For example, when the aerosol generated by the stick 20 is cooled by the external air, a liquid substance (such as moisture, etc.) can be generated. By wrapping the stick 20 with the fifth wrapper 245, it is possible to prevent the liquid substance generated within the stick 20 from leaking to the outside of the stick 20.

[0097] The tobacco rod 21 can contain aerosol product substances. For example, the aerosol product substances can include, but are not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. In addition, the tobacco rod 21 can contain other additive substances such as flavoring agents, wetting agents, and / or organic acids. Also, a flavoring liquid such as menthol or a humectant can be added to the tobacco rod 21 by spraying it onto the tobacco rod 21.

[0098] The tobacco rod 21 can be manufactured in various ways. For example, the tobacco rod 21 can be manufactured from a sheet. For example, the tobacco rod 21 can be manufactured from a strand. For example, the tobacco rod 21 can be manufactured from fine fragments obtained by finely cutting the tobacco sheet. For example, the tobacco rod 21 can be surrounded by a heat-conductive material. For example, the heat-conductive material can be, but is not limited to, a metal foil such as aluminum foil. As an example, the heat-conductive material surrounding the tobacco rod 21 can evenly disperse the heat transferred to the tobacco rod 21, thereby improving the heat conductivity to the tobacco rod. Thus, the tobacco flavor can be improved. The heat-conductive material surrounding the tobacco rod 21 can function as a susceptor heated by an induction heater. Here, although not shown in the drawings, the tobacco rod 21 can further include an additional susceptor in addition to the heat-conductive material surrounding the outside.

[0099] The filter rod 22 may be a cellulose acetate filter. On the other hand, there is no limitation on the shape of the filter rod 22. For example, the filter rod 22 can be a cylindrical rod. For example, the filter rod 22 can be a tube-type rod having a hollow inside. For example, the filter rod 22 can be a recess-type rod. When the filter rod 22 is composed of a plurality of segments, at least one of the plurality of segments can be manufactured in other shapes.

[0100] The first segment of the filter rod 22 can be a cellulose acetate filter. For example, the first segment can be a tubular structure having a hollow inside. When the heater 110 is inserted by the first segment, the phenomenon that the internal substance of the tobacco rod 21 is pushed backward can be prevented, and the cooling effect of the aerosol can also be provided. The diameter of the hollow included in the first segment can adopt an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto.

[0101] The length of the first segment can adopt an appropriate length within the range of 4 mm to 30 mm, but is not limited thereto. For example, the length of the first segment can be 10 mm, but is not limited thereto.

[0102] The second segment of the filter rod 22 cools the aerosol generated by the heater 110 heating the tobacco rod 21. Thus, the user can inhale the aerosol cooled to an appropriate temperature.

[0103] The length or diameter of the second segment can be determined in various ways depending on the form of the stick 20. For example, the length of the second segment can be appropriately adopted within the range of 7 mm to 20 mm. Preferably, the length of the second segment can be about 14 mm, but is not limited thereto.

[0104] The second segment can be manufactured by weaving polymer fibers. In this case, a flavor liquid can also be applied to the fibers made from the polymer. Alternatively, the second segment can be manufactured by weaving together separately provided fibers coated with the flavor liquid and fibers made from the polymer. Alternatively, the second segment can be formed from a crumpled polymer sheet.

[0105] For example, the polymer can be made from 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.

[0106] By being formed by the woven polymer fibers or the crumpled polymer sheet of the second segment, the second segment can include one or more channels extending in the longitudinal direction. Here, the channel can be a passage through which a gas (e.g., air or aerosol) passes.

[0107] For example, the second segment made of a crumpled polymer sheet can be formed from a material having a thickness between about 5 μm and about 300 μm, for example between about 10 μm and about 250 μm. Also, the total surface area of the second segment can be between about 300 mm 2 / mm and about 1000 mm 2 / mm. Also, the aerosol cooling element can be formed from a material having a specific surface area between about 10 mm 2 / mg and about 100 mm 2 / mg.

[0108] On the other hand, the second segment can include a thread containing a volatile flavor component. Here, the volatile flavor component can be menthol, but is not limited thereto. For example, the thread can be filled with a sufficient amount of menthol to provide 1.5 mg or more of menthol to the second segment.

[0109] The third segment of the filter rod 22 can be a cellulose acetate filter. The length of the third segment can be appropriately adopted within the range of 4 mm to 20 mm. For example, the length of the third segment can be about 12 mm, but is not limited thereto.

[0110] The filter rod 22 can be manufactured to generate a fragrance. As an example, a flavoring liquid can be sprayed onto the filter rod 22. As an example, a separate fiber coated with a flavoring liquid can be inserted inside the filter rod 22.

[0111] Also, the filter rod 22 can include at least one capsule 23. Here, the capsule 23 can function to generate a fragrance. The capsule 23 can also function to generate an aerosol. For example, the capsule 23 can have a structure in which a liquid containing a fragrance is encapsulated by a film. The capsule 23 can have a spherical or cylindrical shape, but is not limited thereto.

[0112] Referring to FIG. 6, the stick 30 according to an embodiment may further include a front plug 33. The front plug 33 is located on one side of the tobacco rod 31 facing the filter rod 32. The front plug 33 can prevent the tobacco rod 31 from detaching externally. The front plug 33 can prevent the aerosol liquefied from the tobacco rod 31 during smoking from flowing into the aerosol generating device 10.

[0113] The filter rod 32 can include a first segment 321 and a second segment 322. The first segment 321 may correspond to the first segment of the filter rod 22 in FIG. 5. The second segment 322 may correspond to the third segment of the filter rod 22 in FIG. 5.

[0114] The diameter and the overall length of the stick 30 may correspond to the diameter and the overall length of the stick 20 in FIG. 5. For example, the length of the front plug 33 may be about 7 mm, the length of the tobacco rod 31 may be about 15 mm, the length of the first segment 321 may be about 12 mm, and the length of the second segment 322 may be about 14 mm, but it is not limited thereto.

[0115] The stick 30 may be wrapped by at least one wrapper 35. At least one hole may be formed in the wrapper 35 for external air to flow in or internal gas to flow out. For example, the front plug 33 may be wrapped by the first wrapper 351, the tobacco rod 31 may be wrapped by the second wrapper 352, the first segment 321 may be wrapped by the third wrapper 353, and the second segment 322 may be wrapped by the fourth wrapper 354. Then, the entire stick 30 may be re-wrapped by the fifth wrapper 355.

[0116] Also, at least one perforation 36 may be formed in the fifth wrapper 355. For example, the perforation 36 can be formed in the region surrounding the tobacco rod 31, but it is not limited thereto. For example, the perforation 36 can serve to transfer the heat generated by the heater 210 shown in FIG. 3 to the inside of the tobacco rod 31.

[0117] Further, the second segment 322 can include at least one capsule 34. Here, the capsule 34 can also function to generate a fragrance. The capsule 34 can also function to generate an aerosol. For example, the capsule 34 can have a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 34 can have a spherical or cylindrical shape, but is not limited thereto.

[0118] The first wrapper 351 can be formed by bonding a metal foil such as aluminum foil to a general filter wrapping paper. For example, the total thickness of the first wrapper 351 can be included in the range of 45 μm to 55 μm. For example, the total thickness of the first wrapper 351 can be 50.3 μm. Also, the thickness of the metal foil of the first wrapper 351 can be included in the range of 6 μm to 7 μm. For example, the thickness of the metal foil of the first wrapper 351 can be 6.3 μm. Also, the basis weight of the first wrapper 351 is 50 g / m 2 ~55 g / m 2 and can be included in the range. For example, the basis weight of the first wrapper 351 can be 53 g / m 2 and can be.

[0119] The second wrapper 352 and the third wrapper 353 can be made from a general filter wrapping paper. For example, the second wrapper 352 and the third wrapper 353 can be porous wrapping paper or non-porous wrapping paper.

[0120] For example, the porosity of the second wrapper 352 can be 35000 CU, but is not limited thereto. Also, the thickness of the second wrapper 352 can be included in the range of 70 μm to 80 μm. For example, the thickness of the second wrapper 352 can be 78 μm. Also, the basis weight of the second wrapper 352 is 20 g / m 2 ~25 g / m 2 and can be included in the range. For example, the basis weight of the second wrapper 352 can be 23.5 g / m 2 and can be.

[0121] For example, the porosity of the third wrapper 353 can be 24000 CU, but is not limited thereto. Also, the thickness of the third wrapper 353 can be included in the range of 60 μm to 70 μm. For example, the thickness of the third wrapper 353 can be 68 μm. Also, the basis weight of the third wrapper 353 can be included in the range of 20 g / m2 to 25 g / m2. For example, the basis weight of the third wrapper 353 can be 21 g / m 2 2.

[0122] The fourth wrapper 354 can be made of PLA laminated paper. Here, the PLA laminated paper can be a triple-ply paper including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the fourth wrapper 354 can be included in the range of 100 μm to 120 μm. For example, the thickness of the fourth wrapper 354 can be 110 μm. Also, the basis weight of the fourth wrapper 354 can be 80 g / m 2 ~100 g / m 2 2. 2 For example, the basis weight of the fourth wrapper 354 can be 88 g / m

[0123] The fifth wrapper 355 can be made of sterilized paper (MFW). Here, the sterilized paper (MFW) can be a paper specially manufactured so that its tensile strength, water resistance, smoothness, etc. are improved compared to general paper. For example, the basis weight of the fifth wrapper 355 can be included in the range of 57 g / m 2 ~63 g / m 2 2. 2 For example, the basis weight of the fifth wrapper 355 can be 60 g / m

[0124] The fifth wrapper 355 can contain a predetermined substance. Here, an example of the predetermined substance can be silicon, but is not limited thereto. For example, silicon has properties such as heat resistance with little change due to temperature, oxidation resistance without oxidation, resistance to various chemicals, water repellency to water, or electrical insulation. However, even if it is not silicon, any substance having the above-described properties can be applied (or coated) to the fifth wrapper 355 without limitation.

[0125] The front plug 33 can be made from cellulose acetate. As an example, the front plug 33 can be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. The mono denier of the filaments constituting the cellulose acetate tow can be in the range of 1.0 to 10.0. For example, the mono denier of the filaments constituting the cellulose acetate tow can be in the range of 4.0 to 6.0. For example, the mono denier of the filaments of the front plug 33 can be 5.0. Also, the cross-section of the filaments constituting the front plug 33 can be Y-shaped. The total denier of the front plug 33 can be in the range of 20000 to 30000. For example, the total denier of the front plug 33 can be in the range of 25000 to 30000. For example, the total denier of the front plug 33 can be 28000.

[0126] Also, if necessary, the front plug 33 can include at least one channel. The cross-section of the channel can be made in various shapes.

[0127] The tobacco rod 31 can correspond to the tobacco rod 21 described above with reference to FIG. 5. Therefore, the specific description of the tobacco rod 31 will be omitted below.

[0128] The first segment 321 can be made from cellulose acetate. For example, the first segment can be a tubular structure including a hollow inside. The first segment 321 can be 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 may be the same as the mono denier and total denier of the front plug 33.

[0129] The second segment 322 can be made from cellulose acetate. The mono denier of the filaments constituting the second segment 322 can be in the range of 1.0 to 10.0. For example, the mono denier of the filaments of the second segment 322 can be in the range of 8.0 to 10.0. For example, the mono denier of the filaments of the second segment 322 can be 9.0. Also, the cross-section of the filaments of the second segment 322 can be Y-shaped. The total denier of the second segment 322 can be in the range of 20000 to 30000. For example, the total denier of the second segment 322 can be 25000.

[0130] FIG. 7 is a diagram for explaining the configuration of an aerosol generating device according to an embodiment of the present disclosure.

[0131] Referring to FIG. 7, the aerosol generating device 10 can include a heater 110, a resistance detection sensor 150, a stick detection sensor 155, a battery 16, and / or a power supply circuit 160.

[0132] The resistance detection sensor 150 can be electrically connected to the heater 110. The resistance detection sensor 150 can be a current sensor that detects current. In the present disclosure, a current sensor connected in series with the heater 110 will be described as an example of the resistance detection sensor 150, but it is not limited thereto. For example, the resistance detection sensor 150 can be implemented by a voltage sensor that senses the voltage applied to the heater 110 or the like.

[0133] The power supply circuit 160 can be electrically connected to the battery 16. The power supply circuit 160 can supply power to the heater 110 using the power stored in the battery 16. Here, the amount of power supplied from the power supply circuit 160 to the heater 110 can be adjusted under the control of the control unit 17.

[0134] The power supply circuit 160 can include at least one switching element that operates under the control of the control unit 17. Here, power can be supplied to the heater 110 by the operation of the switching element. For example, the switching element can be a bipolar junction transistor (BJT), a field effect transistor (FET), or the like.

[0135] When the heater 110 and the resistance detection sensor 150 are electrically connected, the same level of current can flow through the heater 110 and the resistance detection sensor 150. Here, the resistance value Rs of the shunt resistor provided in the resistance detection sensor 150 can be a value that does not change with temperature.

[0136] The control unit 17 can determine the voltage V1 applied to the heater 110 and the resistance detection sensor 150. For example, the control unit 17 can determine the voltage V1 applied to the heater 110 and the resistance detection sensor 150 based on the power supplied from the power supply circuit 160 to the heater 110, the current flowing through the heater 110 and the resistance detection sensor 150, and the like.

[0137] The control unit 17 can calculate the voltage V2 applied to the shunt resistor based on the current flowing through the shunt resistor of the resistance detection sensor 150 and the resistance value Rs of the shunt resistor. Here, the control unit 17 can calculate the difference (V1 - V2) between the voltage V1 applied to the heater 110 and the resistance detection sensor 150 and the voltage V2 applied to the shunt resistor as the voltage applied to the heater 110. The control unit 17 can calculate the resistance value Rh of the heater 110 based on the voltage applied to the heater 110 and the current flowing through the heater 110.

[0138] Therefore, even while the core is being heated by the heater 110, the control unit 17 can determine the temperature of the heater 110 using the current flowing through the heater 110 calculated via the resistance detection sensor 150.

[0139] On the one hand, the resistance of the heater 110 is a substance having a temperature coefficient of resistance, and the resistance value Rh of the heater 110 can vary depending on the temperature of the resistance. The control unit 17 can calculate the temperature of the heater 110 based on the temperature coefficient of resistance of the heater 110, the resistance value Rh of the heater 110, and the resistance value of the heater 110 at the reference temperature by an arithmetic expression for calculating the temperature of the heater 110. Here, the arithmetic expression for calculating the temperature of the heater 110 can be expressed by the following mathematical formula 1.

[0140]

Number

[0141] In the mathematical formula 1, TCR is the temperature coefficient of resistance of the heater 110, T1 is the temperature of the heater 110, R1 is the resistance value of the heater 110, T0 is the reference temperature, and R0 can be the resistance value of the heater 110 at the reference temperature. For example, T0 can be 25 °C, and R0 can be the resistance value of the heater 110 at 25 °C.

[0142] FIG. 8 is a flowchart showing an operation method of an aerosol generating device according to an embodiment of the present disclosure.

[0143] Referring to FIG. 8, in operation S810, the aerosol generating device 10 can determine whether the stage in which the resistance of the heater 110 stabilizes (hereinafter referred to as the heater stabilization stage) is completed. Here, the heater stabilization stage may mean the stage in which the state of the substance constituting the resistive heater stabilizes. A resistive heater, which is an example of the heater 110, can be formed of a metal substance, carbon, a metal alloy, a ceramic substance, and / or a composite of two or more kinds of substances. Here, when the resistive heater is heated, at least a part of the crystal structure of the substance constituting the resistive heater can be changed by the heat generated from the resistive heater. Further, when the resistance value of the heater 110 changes corresponding to the change in the crystal structure, the result of calculating the temperature of the heater 110 based on the resistance value of the heater 110 under certain conditions can also change. Therefore, after the state of the substance constituting the resistive heater stabilizes in the heater stabilization stage, the aerosol generating device 10 can accurately determine the temperature of the heater 110 by calculating the resistance of the heater 110.

[0144] In operation S820, when the heater stabilization stage is not completed, the aerosol generating device 10 can heat the heater 110 corresponding to a first temperature in a first section. Here, the first section may be a section corresponding to a heating mode in which an aerosol is generated by heating an aerosol generating substance with the heater 110. The first temperature may be a temperature corresponding to the heating mode. For example, the first temperature may correspond to the maximum value of the temperature of the heater 110 in the heating mode (for example, 350°C). Here, the maximum value of the temperature of the heater 110 in the heating mode can be determined based on a temperature profile related to the heating mode stored in the memory 14.

[0145] When the aerosol generating device 10 is in the S830 operation and the first section ends, in the second section, the heater 110 can be heated corresponding to a second temperature different from the first temperature. Here, the second section can be a section corresponding to a cleaning mode for removing foreign matter attached to the heater 110. The second temperature can be a temperature corresponding to the cleaning mode. For example, the second temperature can be the maximum value of the temperature of the heater 110 in the cleaning mode that is higher than the first temperature (for example, 550 °C). Here, the maximum value of the temperature of the heater 110 in the cleaning mode can be determined based on the temperature profile related to the cleaning mode stored in the memory 14.

[0146] According to one embodiment, the time during which the heater 110 is heated corresponding to the first temperature in the first section (hereinafter referred to as the first time) may be longer than the time during which the heater 110 is heated corresponding to the second temperature in the second section (hereinafter referred to as the second time). For example, the first time can correspond to the time taken for using one stick 20 (for example, 5 minutes), and the second time can correspond to the time taken for removing foreign matter attached to the heater 110 (for example, 15 seconds).

[0147] When the aerosol generating device 10 is in the S840 operation and the second section ends, it can be determined whether the number of times the first section and the second section have ended (hereinafter referred to as the number of end times) is equal to or greater than a predetermined number of times. Here, the predetermined number of times can be preset to be two or more. For example, when the second section ends, the aerosol generating device 10 can increase the number of end times and then determine whether the number of end times is equal to or greater than the predetermined number of times.

[0148] When the number of end times is less than a predetermined number, the aerosol generating device 10 can start the first section. According to one embodiment, the aerosol generating device 10 can start the first section after a predetermined time has elapsed since the end of the second section. Here, the predetermined time may be a time corresponding to the temperature of the heater 110 becoming lower than the first temperature. For example, the temperature of the heater 110 can be preset in the aerosol generating device 10 so that it becomes lower than the first temperature when 45 seconds, which is a predetermined time, has elapsed since the end of the second section. Thereby, the state of the heater 110 can be adjusted in consideration of the general usage pattern of the user who uses the aerosol generating device 10.

[0149] In the S850 operation, when the number of end times is equal to or more than a predetermined number, the aerosol generating device 10 can heat the heater 110 corresponding to the third temperature in the third section. Here, the third section may be a section for heat-treating the heater 110 so that the state of the resistive heater repeatedly heated in the first section and the second section is stabilized. The third temperature may be higher than the first temperature and lower than the second temperature. According to one embodiment, the time (hereinafter referred to as the third time) during which the heater 110 is heated corresponding to the third temperature in the third section may be longer than the first time and the second time.

[0150] According to one embodiment, when the third section ends, the aerosol generating device 10 can determine that the heater stabilization stage is completed. According to one embodiment, when the operation corresponding to the third section is omitted, the aerosol generating device 10 can determine that the heater stabilization stage is completed when the number of end times is equal to or more than a predetermined number.

[0151] Referring to FIG. 9, the heater 110 can be heated corresponding to the first temperature T1 until the time point t1 corresponding to the first time. Also, the heater 110 can be heated corresponding to the second temperature T2 from the time point t1 when the first section ends until the time point t2 when the second time has elapsed. Also, the heater 110 can be heated corresponding to the first temperature T1 again from the time point t3 when a predetermined time has elapsed since the time point t2 when the second section ends.

[0152] When the specified number of times is five circuits, in the first stage to the fifth stage (Sec1 to Sec5), the heater 110 can be repeatedly heated corresponding to the first temperature T1 and the second temperature T2. Further, the heater 110 can be heated corresponding to the third temperature (T3) from the time t4 when the fifth stage (Sec5) ends.

[0153] Referring to FIG. 10, when the heater 110 is heated corresponding to the first temperature T1 and the second temperature T2 in the heater stabilization stage, the temperature of the heater 110 corresponding to the resistance of the heater 110 can be calculated to be constant under certain conditions. For example, the certain conditions may mean that a certain amount of power is supplied to the heater 110 for a certain period of time.

[0154] The temperatures of the heaters 110 provided in the plurality of aerosol generating devices 1010 and 1020 calculated under certain conditions may exceed T4 in a state where the heater stabilization stage has not started. On the other hand, after the heater stabilization stage is completed, it can be calculated that any of the temperatures of the heater 110 is less than T4. That is, by changing the crystal structure of the substance constituting the heater 110 by heating the heater 110 in the heater stabilization stage, a resistance value different from the resistance value of the heater 110 calculated under the same conditions before the heater stabilization stage starts can be calculated.

[0155] Further, as the number of times the heater 110 is repeatedly heated corresponding to the first temperature T1 and the second temperature T2 in the heater stabilization stage increases, the resistance value and temperature of the heater 110 calculated under certain conditions can become constant.

[0156] On the other hand, when the heater stabilization stage is completed in the S860 operation, the aerosol generating device 10 can detect the insertion of the stick 20 into the insertion space 130. For example, when the heater stabilization stage is completed, the aerosol generating device 10 can monitor whether the stick 20 is inserted into the insertion space 130 by the stick detection sensor 155.

[0157] In the S870 operation, the aerosol generating device 10 can calculate the temperature of the heater 110 based on the resistance of the heater 110. For example, when the stick 20 is inserted, the aerosol generating device 10 can detect the resistance of the heater 110 by the resistance detection sensor 150. Here, the aerosol generating device 10 can calculate the temperature of the heater 110 corresponding to the change in the resistance of the heater 110.

[0158] As described above, according to at least one of the embodiments of the present disclosure, the temperature of the heater 110 can be accurately calculated based on the resistance of the heater 110.

[0159] Also, according to at least one of the embodiments of the present disclosure, based on the result of heating the heater 110 corresponding to a plurality of modes, the resistance of the heater 110 can be calculated to be constant under certain conditions.

[0160] Referring to FIGS. 1 to 10, the aerosol generating device 10 according to one aspect of the present disclosure can include a heater 110 that heats an aerosol generating substance, a power supply circuit 160 that supplies power to the heater 110, a resistance detection sensor 150 that detects the resistance of the heater 110, and a control unit 17. When a predetermined stage for the resistance of the heater 110 is completed, the control unit 17 calculates the temperature of the heater 110 via the resistance detection sensor 150. When the predetermined stage is not completed, the control unit 17 controls the power supply circuit 160 so that the heater 110 is heated corresponding to a predetermined first temperature T1 in a first section. When the first section ends, the control unit 17 controls the power supply circuit 160 so that the heater 110 is heated corresponding to a second temperature T2 different from the first temperature T1 in a second section. When the second section ends, it can be determined whether the predetermined stage is completed.

[0161] Also, according to another aspect of the present disclosure, the aerosol generating device 10 may further include a housing 101 in which an insertion space 130 is formed, and a stick sensing sensor 155 that senses a stick inserted into the insertion space 130. When the predetermined stage is completed, the control unit 17 can monitor whether the stick is inserted into the insertion space 130 via the stick sensing sensor 155.

[0162] Also, according to another aspect of the present disclosure, the second temperature T2 may be higher than the first temperature T1, and the second section may be shorter than the first section.

[0163] Also, according to another aspect of the present disclosure, the first temperature T1 may be a temperature corresponding to a first mode of generating an aerosol by heating an aerosol generating substance, and the second temperature T2 may be a temperature corresponding to a second mode of removing foreign matter attached to the heater 110.

[0164] Also, according to another aspect of the present disclosure, the first temperature T1 may be the maximum value of the temperature of the heater 110 in the first mode, and the second temperature T2 may be the maximum value of the temperature of the heater 110 in the second mode.

[0165] Also, according to another aspect of the present disclosure, when the number of times the first section and the second section have ended is equal to or greater than a predetermined number of times, the control unit 17 can determine that the predetermined stage has been completed.

[0166] Also, according to another aspect of the present disclosure, when the number of times the first section and the second section have ended is less than a predetermined number of times, after a predetermined time has elapsed from the time when the second section has ended, the control unit 17 can start the first section.

[0167] Also, according to another aspect of the present disclosure, the predetermined time may be a time corresponding to the temperature of the heater 110 dropping below the first temperature T1.

[0168] Also, according to another aspect of the present disclosure, when the number of end times of the end of the first section and the second section is equal to or greater than a predetermined number, the control unit 17 controls the power supply circuit 160 so that the heater 110 is heated corresponding to a predetermined third temperature T3 in a third section, and it can be determined that the predetermined stage is completed corresponding to the end of the third section. The third temperature T3 may be higher than the first temperature T1 and lower than the second temperature T2.

[0169] Also, according to another aspect of the present disclosure, the third section may be a section longer than the first section and the second section.

[0170] The specific embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinguishable from each other. Specific elements or all elements of the embodiments of the present disclosure described above can be combined in configuration or function with other elements or combined with each other.

[0171] For example, the A configuration described in one embodiment of the present disclosure and the drawings and the B configuration described in another embodiment of the present disclosure and the drawings can be combined with each other. That is, even if the combination between the configurations is not directly described, the combination is possible except when it is described that the combination is impossible.

[0172] Although the embodiments have been described above with a number of illustrative examples, those skilled in the art in the technical field belonging to the scope of the principles of the present disclosure should understand that many other variations and embodiments are possible. More specifically, various modifications and variations are possible in the components and / or arrangements of the target combinations within the scope of the present disclosure, the drawings, and the appended claims. In addition to the modifications and variations of the components and / or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A heater for heating an aerosol generating substance, a power supply circuit for supplying power to the heater, a resistance detection sensor for detecting the resistance of the heater, and a control unit, wherein the control unit determines whether a predetermined stage for the heater is completed, and when it is determined that the predetermined stage is completed, calculates the temperature of the heater via the resistance detection sensor, wherein the predetermined stage controls the power supply circuit so that the heater is heated to a first temperature in a first section, and after the end of the first section, repeats a predetermined number of times of controlling the power supply circuit so that the heater is heated to a second temperature different from the first temperature in a second section. An aerosol generating device characterized by this.

2. A housing having an insertion space, and a stick detection sensor for detecting a stick inserted into the insertion space, wherein the control unit further monitors whether the stick is inserted into the insertion space via the stick detection sensor after the predetermined stage is completed. The aerosol generating device according to claim 1, characterized by this.

3. The second temperature is higher than the first temperature, and the second section is shorter than the first section. The aerosol generating device according to claim 1, characterized by this.

4. The first temperature corresponds to the temperature of the heater in a first mode for generating an aerosol by heating the aerosol generating substance, and the second temperature corresponds to the temperature of the heater in a second mode for removing foreign matter attached to the heater. The aerosol generating device according to claim 1, characterized by this.

5. The first temperature is the maximum temperature of the heater in the first mode, and the second temperature is the maximum temperature of the heater in the second mode. The aerosol generating device according to claim 4, characterized by this.

6. The predetermined stage is determined by determining that the predetermined stage is completed when the number of repetitions of the end of the first section and the second section is equal to or more than a predetermined number of repetitions of two or more times. The aerosol generating device according to claim 1, characterized by this.

7. The control unit further starts a subsequent first section after a predetermined time has elapsed since the end of the previous second section. The aerosol generating device according to claim 1, characterized by this.

8. The aerosol generating device according to claim 7, characterized in that the temperature of the heater becomes lower than the first temperature during the predetermined time.

9. The predetermined stage further includes: after the number of repetitions in which the first section and the second section have ended is equal to or greater than a predetermined number, controlling the power supply circuit so that the heater is heated to a third temperature in a third section, The aerosol generating device according to claim 1, characterized in that the third temperature is higher than the first temperature and lower than the second temperature.

10. The aerosol generating device according to claim 9, characterized in that the third section is longer than the first section and the second section.

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