Aerosol generating device and method of operation thereof

Abstract

An aerosol generating device and an operating method thereof are disclosed. The aerosol generating device of the present disclosure includes a heater for heating an aerosol generating material, a temperature sensor for detecting the temperature of the heater, and a control unit for monitoring the temperature of the heater by the temperature sensor. The control unit determines whether the temperature of the heater is equal to or higher than a predetermined first temperature in a state where a first power corresponding to preheating of the heater is supplied to the heater. If the temperature of the heater is equal to or higher than the first temperature, the control unit changes the power supplied to the heater to a second power lower than the first power. If the temperature of the heater is equal to or higher than a second temperature higher than the first temperature in a state where the second power is supplied to the heater, the control unit cuts off the power supply to the heater.

Description

[Technical Field]

[0001] The present disclosure relates to an aerosol generating device and a method of operation thereof. [Background technology]

[0002] An aerosol generating device is used to extract a predetermined component from a medium or substance via an aerosol. The medium may contain a variety of components. The components contained in the medium may be flavorings of a variety of components. For example, the components contained in the medium may include nicotine, herbal, and / or coffee components. In recent years, much research has been conducted on such aerosol generating devices. Summary of the Invention [Problem to be solved by the invention]

[0003] The present disclosure is directed to solving the above-mentioned problems and other problems.

[0004] Another object of the present disclosure is to provide an aerosol generating device and an operating method thereof that can accurately determine whether the aerosol generating material has been consumed in the preheating section.

[0005] Yet another object of the present disclosure is to provide an aerosol generating device and an operating method thereof that can adjust the power supplied to a heater in a heating section based on a determination of whether an aerosol generating material has been consumed in a preheating section. [Means for solving the problem]

[0006] To achieve the above-mentioned object, an aerosol generating device according to one aspect of the present disclosure may include a heater that heats an aerosol generating material, a temperature sensor that detects the temperature of the heater, and a control unit that monitors the temperature of the heater using the temperature sensor. The control unit may determine whether the temperature of the heater is equal to or higher than a predetermined first temperature when a first power corresponding to preheating of the heater is supplied to the heater. If the temperature of the heater is equal to or higher than the first temperature, the control unit may change the power supplied to the heater to a second power lower than the first power. If the temperature of the heater is equal to or higher than a second temperature higher than the first temperature when the second power is supplied to the heater, the control unit may cut off the power supply to the heater.

[0007] To achieve the above-mentioned object, an operating method of an aerosol generating device according to one aspect of the present disclosure includes an operation of determining whether the temperature of the heater is equal to or higher than a predetermined first temperature when a first power corresponding to preheating of the heater is supplied to the heater, an operation of changing the power supplied to the heater to a second power lower than the first power when the temperature of the heater is equal to or higher than the first temperature, and an operation of cutting off the power supply to the heater when the temperature of the heater is equal to or higher than a second temperature higher than the first temperature when the second power is supplied to the heater. [Effects of the Invention]

[0008] According to at least one embodiment of the present disclosure, it is possible to accurately determine whether the aerosol-generating material has been consumed in the preheating section.

[0009] According to at least one embodiment of the present disclosure, the power supplied to the heater in the heating section may be adjusted based on whether the aerosol generating material is consumed in the preheating section.

[0010] Further scope of applicability of the present disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present disclosure will be apparent to those skilled in the art, it should be understood that the detailed description and specific examples, such as preferred embodiments of the present disclosure, are given by way of example only.

[0011] The above and other objects, features and characteristics of the present disclosure will become apparent from the following detailed description taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a block diagram of an aerosol generating device according to one embodiment of the present disclosure. [Figure 2] FIG. 1 illustrates an aerosol generating device according to an embodiment of the present disclosure. [Figure 3] FIG. 1 illustrates an aerosol generating device according to an embodiment of the present disclosure. [Figure 4] FIG. 1 illustrates an aerosol generating device according to an embodiment of the present disclosure. [Figure 5] FIG. 1 illustrates a stick according to an embodiment of the present disclosure. [Figure 6] FIG. 1 illustrates a stick according to an embodiment of the present disclosure. [Figure 7] FIG. 1 illustrates a stick according to an embodiment of the present disclosure. [Figure 8] 1 is a flowchart illustrating a method of operating an aerosol generating device according to one embodiment of the present disclosure. [Figure 9] FIG. 1 is a diagram illustrating the configuration of an aerosol generating device according to an embodiment of the present disclosure. [Figure 10] 1A to 1C are diagrams illustrating the operation of an aerosol generating device according to an embodiment of the present disclosure. [Figure 11] 1A to 1C are diagrams illustrating the operation of an aerosol generating device according to an embodiment of the present disclosure. [Figure 12] 1A to 1C are diagrams illustrating the operation of an aerosol generating device according to an embodiment of the present disclosure. [Figure 13]1A to 1C are diagrams illustrating the operation of an aerosol generating device according to an embodiment of the present disclosure. [Figure 14] 10 is a flowchart illustrating a method of operating an aerosol generating device according to another embodiment of the present disclosure. [Figure 15] 10 is a flowchart illustrating a method of operating an aerosol generating device according to another embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, the 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 shown in different drawings, and redundant description thereof will be omitted.

[0014] The suffixes "module" and "section" for components used in the following description are used solely for the convenience of explanation of the specification. "Module" and "section" do not have different meanings or roles from each other.

[0015] Furthermore, in the following description of the embodiments disclosed herein, detailed descriptions of related known technologies may be omitted if they may obscure the gist of the embodiments disclosed herein. The accompanying drawings are provided to facilitate understanding of the embodiments disclosed herein, and do not limit the technical ideas disclosed herein. Therefore, the accompanying drawings should be interpreted as including all modifications, equivalents, and alternatives within the spirit and scope of the present disclosure.

[0016] Terms including ordinal numbers such as "first," "second," etc. may 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 to distinguish one component from another.

[0017] When a component is said to be "connected" to another component, it will be understood that there may be other components in between, whereas when a component is said to be "directly connected" to another component, it will be understood that there are no other components in between.

[0018] The singular expression includes the plural expression unless the context clearly dictates otherwise.

[0019] FIG. 1 is a block diagram of an aerosol generating device according to one embodiment of the present disclosure.

[0020] Referring to FIG. 1 , the aerosol generating device 10 may include a communication interface 11 , an input / output interface 12 , an aerosol generating module 13 , a memory 14 , a sensor module 15 , a battery 16 , and / or a control unit 17 .

[0021] In one embodiment, the aerosol generating device 10 may be composed of only a main body. In this case, the components included in the aerosol generating device 10 may be located in the main body. In another embodiment, the aerosol generating device 10 may be composed of a cartridge that stores the aerosol generating material and the main body. In this case, the components included in the aerosol generating device 10 may be located in at least one of the main body and the cartridge.

[0022] The communication interface 11 may include at least one communication module for communication with an external device and / or a network. For example, the communication interface 11 may include a communication module for wired communication such as a universal serial bus (USB). For example, the communication interface 11 may include a communication module for wireless communication such as wireless fidelity (WiFi), Bluetooth, Bluetooth Low Energy (BLE), Zigbee, or near field communication (NFC).

[0023] The input / output interface 12 may include an input device that receives commands from a user and / or an output device that outputs information to a user. For example, the input device may include a touch panel, physical buttons, a microphone, etc. For example, the output device may include a display device that outputs visual information such as a display or a light-emitting diode (LED), an audio device that outputs auditory information such as a speaker or a buzzer, a motor that outputs tactile information such as a haptic effect, etc.

[0024] The input / output interface 12 can transmit data corresponding to commands input by a 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 data received from other components (etc.) of the aerosol generating device 10 via the output device.

[0025] The aerosol-generating module 13 can generate an aerosol from an aerosol-generating material. Here, the aerosol-generating material can be any one 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.

[0026] According to one embodiment, the liquid aerosol-forming material may be a liquid containing a tobacco-containing substance, including a volatile tobacco flavor component. According to another embodiment, the liquid aerosol-forming material may be a liquid containing a non-tobacco substance. For example, the liquid aerosol-forming material may include water, solvent, nicotine, plant extracts, flavorings, flavoring agents, vitamin mixtures, etc.

[0027] The solid-state aerosol-forming material may include a solid material based on tobacco raw materials, such as reconstituted tobacco sheets, shredded tobacco, or granulated tobacco. The solid-state aerosol-forming material may also include a solid material containing a taste modifier, a flavoring, or the like. For example, the taste modifier may include calcium carbonate, sodium bicarbonate, calcium oxide, or the like. For example, the flavoring may include natural substances such as herb granules, or silica, zeolite, dextrin, or the like containing flavoring ingredients.

[0028] The aerosol generating material may further include an aerosol forming agent such as glycerin or propylene glycol.

[0029] The aerosol generation module 13 can include at least one heater.

[0030] The aerosol generation module 13 may include an electrical resistive heater. For example, the electrical resistive heater may include at least one electrically conductive track and may be heated by passing an electric current through the electrically conductive track. The heated electrical resistive heater may then heat the aerosol-generating material.

[0031] The electrically conductive tracks may comprise an electrically resistive material. As an example, the electrically conductive tracks may be made of a metal material. As another example, the electrically conductive tracks may be made of a ceramic material, carbon, a metal alloy, or a composite of a ceramic material and a metal.

[0032] The electric resistance heater may include an electrically conductive track formed in a variety of shapes, for example, the electrically conductive track may be formed in any one of a tube shape, a plate shape, a needle shape, a rod shape, and a coil shape.

[0033] The aerosol generation module 13 may include a heater that uses induction heating. For example, an induction heater may include an electrically conductive coil, and an alternating magnetic field whose direction periodically changes may be generated by adjusting the current flowing through the electrically conductive coil. When an alternating magnetic field is applied to a magnetic material, energy loss due to eddy current loss and hysteresis loss may occur in the magnetic material. The lost energy may be released as thermal energy, heating the aerosol-generating material adjacent to the magnetic material. Here, the object that generates heat due to the magnetic field may be referred to as a susceptor.

[0034] On the other hand, the aerosol generation module 13 can also generate an aerosol from the aerosol-generating substance by generating ultrasonic vibrations.

[0035] The aerosol generating module 13 may be referred to as a cartomizer, an atomizer, a vaporizer, or the like.

[0036] The memory 14 can store programs for various signal processing and control within the control unit 17, and can store data processed by the control unit 17 and data to be processed.

[0037] For example, memory 14 may store application programs designed to perform various tasks that can be processed by control unit 17, and may selectively provide some of the stored application programs upon request of control unit 17.

[0038] For example, the memory 14 may store the operating time of the aerosol generating device 10, the maximum number of puffs, the current number of puffs, the number of times the battery 16 has been charged, the number of times the battery 16 has been discharged, at least one temperature profile, data on the user's inhalation pattern, data on charging and discharging, etc. Here, a puff may refer to the user's inhalation, and inhalation may be a situation in which the user inhales through the mouth or nose into the user's oral cavity, nasal cavity, or lungs.

[0039] The memory 14 may include at least one of volatile memory (e.g., DRAM, SRAM, SDRAM, etc.), non-volatile memory (e.g., flash memory, hard disk drive (HDD), solid-state drive (SSD), etc.).

[0040] The sensor module 15 can include at least one sensor.

[0041] For example, the sensor module 15 may include a sensor for detecting a puff (hereinafter referred to as a puff sensor). Here, the puff sensor may be implemented 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.

[0042] For example, the sensor module 15 may include a sensor for detecting a puff (hereinafter referred to as a puff sensor). Here, the puff sensor may be implemented by a pressure sensor, a gyro sensor, an acceleration sensor, a magnetic field sensor, or the like.

[0043] For example, the sensor module 15 may include a sensor (hereinafter referred to as a temperature sensor) that detects the temperature of the heater included in the aerosol generation module 13, the temperature of the aerosol-generating material, etc. Here, the heater included in the aerosol generation module 13 may also function as a temperature sensor. For example, the electrically resistive material of the heater may be a material having a temperature coefficient of resistance. The sensor module 15 may sense the temperature of the heater by measuring the resistance of the heater, which changes depending on the temperature.

[0044] For example, if a stick can be inserted into the main body of the aerosol generation device 10, the sensor module 15 can include a sensor that detects the insertion of the stick (hereinafter referred to as a stick detection sensor).

[0045] For example, if the aerosol generating device 10 includes a cartridge, the sensor module 15 may include a sensor (hereinafter referred to as a cartridge detection sensor) that detects the attachment / detachment, position, etc. of the cartridge relative to the main body.

[0046] Here, the stick detection sensor and / or cartridge detection sensor may be implemented by an inductance-based sensor, a capacitance-type sensor, a resistance sensor, a hall sensor (hall IC) using the hall effect, or the like.

[0047] For example, the sensor module 15 may include a voltage sensor that detects the voltage applied to a component (e.g., the battery 16) provided in the aerosol generating device 10 and / or a current sensor that detects the current.

[0048] The battery 16 can supply power used for the operation of the aerosol generation device 10 under the control of the control unit 17. The battery 16 can supply power to other components provided in the aerosol generation 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, etc.

[0049] The battery 16 may be a rechargeable battery or a disposable battery. For example, the battery 16 may be, but is not limited to, a lithium-ion battery or a lithium polymer (Li-Polymer) battery. For example, if the battery 16 is rechargeable, the charge rate (C-rate) of the battery 16 may be, but is not limited to, 10C and the discharge rate (C-rate) of the battery 16 may be, but is not limited to, 10C to 20C. For stable use, the battery 16 may be manufactured to maintain 80% or more of its total capacity even after 2000 charge / discharge cycles.

[0050] The aerosol generating device 10 may further include a battery protection circuit module (PCM), which is a circuit for protecting the battery 16. The battery protection module (PCM) may be disposed adjacent to the upper surface of the battery 16. For example, to prevent overcharging and over-discharging of the battery 16, the battery protection module (PCM) may cut off the electrical path to the battery 16 when a short circuit occurs in a circuit connected to the battery 16, when an overvoltage is applied to the battery 16, when an overcurrent flows through the battery 16, or the like.

[0051] The aerosol generating device 10 may further include a charging terminal to which externally supplied power is input. For example, a charging terminal may be formed on one side of the body of the aerosol generating device 10, and the aerosol generating device 10 may charge the battery 16 using power supplied through the charging terminal. Here, the charging terminal may be a wired terminal for USB communication, a pogo pin, or the like.

[0052] The aerosol generating device 10 may further include a power terminal (not shown) to which externally supplied power is input. For example, a power line may be connected to the power terminal disposed on one side of the body of the aerosol generating device 10. The aerosol generating device 10 may charge a battery using power supplied through the power line connected to the power terminal. Here, the power terminal may be a wired terminal for USB communication.

[0053] The aerosol generation device 10 can also wirelessly receive power supplied from an external source via the communication interface 11. For example, the aerosol generation device 10 can receive power wirelessly using an antenna included in a communication module for wireless communication, and can charge the battery 16 using the wirelessly supplied power.

[0054] The control unit 17 can control the overall operation of the aerosol generation device 10. The control unit 17 is connected to each component provided in the aerosol generation device 10, and can transmit and / or receive signals between each component to control the overall operation of each component.

[0055] The control unit 17 may include at least one processor and may use the processor to control the overall operation of the aerosol generating device 10. Here, the processor may be a general processor such as a central processing unit (CPU). Of course, the processor may be a dedicated device such as an ASIC or a processor based on other hardware.

[0056] The control unit 17 can perform any one of the multiple functions of the aerosol generation device 10. For example, the control unit 17 can execute any one of the multiple functions of the aerosol generation device 10 (e.g., preheating function, heating function, charging function, cleaning function, etc.) depending on the state of each component provided in the aerosol generation device 10, a user command received via the input / output interface 12, etc.

[0057] The control unit 17 can control the operation of each component included in the aerosol generation device 10 based on the data stored in the memory 14. For example, the control unit 17 can control the battery 16 to supply a predetermined amount of power to the aerosol generation module 13 for a predetermined period of time based on data about the temperature profile, the user's inhalation pattern, etc. stored in the memory 14.

[0058] The control unit 17 can determine whether a puff has occurred through the puff sensor included in the sensor module 15. For example, the control unit 17 can check changes in temperature, flow rate, pressure, voltage, etc. within the aerosol generating device 10 based on the sensing value of the puff sensor, and can determine whether a puff has occurred based on the confirmed results based on the sensing value of the puff sensor.

[0059] The control unit 17 can control the operation of each component included in the aerosol generating device 10 depending on whether or not a puff is performed and / or the number of puffs. For example, the control unit 17 can control the heater temperature to be changed or maintained based on the temperature profile stored in the memory 14.

[0060] The control unit 17 can control the power supply to the heater to be cut off under predetermined conditions, such as when the stick is removed and the cartridge is separated, when the number of puffs reaches a preset maximum number of puffs, when no puffs are detected for a preset time, or when the remaining charge of the battery 16 is less than a predetermined value.

[0061] The control unit 17 may calculate the remaining amount of power (hereinafter referred to as the remaining amount) stored in the battery 16. For example, the control unit 17 may calculate the remaining amount of the battery 16 based on the sensing values ​​of the voltage sensor and / or the current sensor included in the sensor module 15.

[0062] The control unit 17 can control the supply of power to the heater using at least one of a pulse width modulation (PWM) method and a proportional-integral-differential (PID) method.

[0063] For example, the control unit 17 may use a PWM method to control the supply of a current pulse having a predetermined frequency and duty ratio to the heater, where the control unit 17 may control the power supplied to the heater by adjusting the frequency and duty ratio of the current pulse.

[0064] For example, the control unit 17 can determine a target temperature based on the temperature profile. Here, the control unit 17 can control the power supplied to the heater using a PID method, which is a feedback control method using a difference between the heater temperature and the target temperature, a value obtained by integrating the difference over time, and a value obtained by differentiating the difference over time.

[0065] Meanwhile, although the PWM method and the PID method have been described as examples of control methods for supplying power to the heater, 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.

[0066] Meanwhile, the control unit 17 may control the heater to supply power under preset conditions. For example, when a cleaning function for cleaning a space where the stick is inserted is selected according to a command input by the user via the input / output interface 12, the control unit 17 may control the heater to supply a predetermined amount of power.

[0067] 2 to 4 are diagrams illustrating an aerosol generating device according to an embodiment of the present disclosure.

[0068] According to various embodiments of the present invention, the aerosol generating device 10 can include a body 100 and / or a cartridge 200 .

[0069] Referring to FIG. 2, an aerosol generating device 10 according to one embodiment may include a main body 100 configured to allow the stick 20 to be inserted into a space formed by a housing 101.

[0070] The stick 20 may be similar to a typical combustible cigarette. For example, the stick 20 may 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 may also contain an aerosol-generating substance. For example, the aerosol-generating substance formed in the form of granules or capsules may be inserted into the second portion.

[0071] The entire first part may be inserted into the aerosol generation device 10, and the second part may be exposed to the outside. Alternatively, only a portion of the first part may be inserted into the aerosol generation device 10, or both the first part and the second part may be inserted. A user can inhale the aerosol by holding the second part in their mouth. Here, the aerosol is generated by external air passing through the first part, and the generated aerosol can be delivered to the user's mouth by passing through the second part.

[0072] The main body 100 may be formed to have a structure that allows external air to flow into the main body 100 when the stick 20 is inserted. Here, the external air that has flowed into the main body 100 may pass through the stick 20 and flow into the user's mouth.

[0073] The heater may be positioned within the body 100 at a location that corresponds to the location of the stick 20 when the stick 20 is inserted into the body 100. In this drawing, the heater is shown as an electrically conductive heater 110 that includes needle-like electrically conductive tracks, although the invention is not limited in this respect.

[0074] The heater can heat the inside and / or outside of the stick 20 using power supplied from the battery 16. An aerosol can be generated in the heated stick 20. A user can inhale the tobacco-flavored aerosol by inhaling through one end of the stick 20 with their mouth.

[0075] Meanwhile, the control unit 17 may control the heater to supply power under preset conditions even when the stick 20 is not inserted. For example, when a cleaning function for cleaning the space into which the stick 20 is inserted is selected according to a command input by the user via the input / output interface 12, the control unit 17 may control the heater to supply a predetermined amount of power.

[0076] The control unit 17 can monitor the number of puffs based on the sensing value of the puff sensor from the time the stick 20 is inserted.

[0077] When the inserted stick 20 is removed, the control unit 17 can initialize the current number of puffs stored in the memory 14.

[0078] Referring to FIG. 3, an aerosol generating device 10 according to one embodiment can include a body 100 that supports a cartridge 200, and the cartridge 200 that stores an aerosol generating substance.

[0079] According to one embodiment, the cartridge 200 may be configured to be detachable from the main body 100. According to another embodiment, the cartridge 200 may be configured integrally with the main body 100. For example, the cartridge 200 may be attached to the main body 100 by inserting at least a portion of the cartridge 200 into an internal space formed by the housing 101 of the main body 100.

[0080] The main body 100 may be formed in a structure that allows external air to flow into the main body 100 when the cartridge 200 is inserted. Here, the external air that has flowed into the main body 100 may flow into the user's mouth through the cartridge 200.

[0081] The control unit 17 can determine whether the cartridge 200 is attached or detached by using 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 whether the cartridge 200 is attached or detached based on whether the pulse current is received through another terminal.

[0082] The cartridge 200 may include a heater 210 for heating an aerosol-generating substance and / or a reservoir 220 for storing the aerosol-generating substance. For example, a liquid transfer means impregnated (containing) the aerosol-generating substance may be disposed inside the reservoir 220. The electrically conductive track of the heater 210 may be formed in a structure that wraps around the liquid transfer means. Here, the liquid transfer means may be heated by the heater 210 to generate an aerosol. Here, the liquid transfer means may include a wick made of cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0083] The cartridge 200 may include an insertion space 230 configured to allow the insertion of the stick 20. For example, the cartridge 200 may include an insertion space formed by an inner wall (not shown) extending circumferentially along the direction in which the stick 20 is inserted. Here, the insertion space may be formed by opening the inside of the inner wall upward and downward. The stick 20 may be inserted into the insertion space 230 formed by the inner wall.

[0084] The insertion space into which the stick 20 is inserted may be formed in a shape corresponding to the shape of a portion of the stick 20 to be inserted into the insertion space. For example, if the stick 20 is formed in a cylindrical shape, the insertion space may be formed in a cylindrical shape.

[0085] When the stick 20 is inserted into the insertion space, the outer circumferential surface of the stick 20 is surrounded by the inner wall and can come into contact with the inner wall.

[0086] 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.

[0087] A user can inhale the aerosol while holding one end of the stick 20 in their mouth. The aerosol generated by the heater 210 can be delivered to the user's mouth through the stick 20. As the aerosol passes through the stick 20, the substance contained in the stick 20 is added to the aerosol, and the aerosol with the added substance can be inhaled into the user's mouth through one end of the stick 20.

[0088] 4, an aerosol generating device 10 according to one embodiment may include a main body 100 that supports a cartridge 200, and the cartridge 200 stores an aerosol-generating substance. The main body 100 may be configured so that the stick 20 can be inserted into the insertion space 130.

[0089] The aerosol generating device 10 may include a first heater that heats the aerosol-generating material stored in the cartridge 200. For example, when a user inhales through one end of the stick 20 into the mouth, the aerosol generated by the first heater can pass through the stick 20. Here, a flavor can be added to the aerosol as it passes through the stick 20. The flavored aerosol can be inhaled into the user's mouth through one end of the stick 20.

[0090] Meanwhile, according to another embodiment, the aerosol generating device 10 may include a first heater that heats the aerosol generating material stored in the cartridge 200 and a second heater that heats the stick 20 inserted into the main body 100. For example, the aerosol generating device 10 may generate an aerosol by heating the aerosol generating material stored in the cartridge 200 and the stick 20 using the first heater and the second heater, respectively.

[0091] 5 to 7 are diagrams illustrating a stick according to an embodiment of the present disclosure.

[0092] 5, a stick 20 according to one embodiment can include a tobacco rod 21 and a filter rod 22. The first portion described above with reference to FIG. 2 can include the tobacco rod 21. The second portion described above with reference to FIG. 2 can include the filter rod 22.

[0093] Although the filter rod 22 is shown in Figure 5 as a single segment, this is not limiting. In other words, the filter rod 22 may be composed of multiple segments. For example, the filter rod 22 may include a first segment that cools the aerosol and a second segment that filters a specific component contained in the aerosol. If necessary, the filter rod 22 may also include at least one additional segment that performs another function.

[0094] The stick 20 may have a diameter ranging from 5 mm to 9 mm and a length of approximately 48 mm, but is not limited thereto. For example, the tobacco rod 21 may have a length of approximately 12 mm, the first segment of the filter rod 22 may have a length of approximately 10 mm, the second segment of the filter rod 22 may have a length of approximately 14 mm, and the third segment of the filter rod 22 may have a length of approximately 12 mm, but is not limited thereto.

[0095] The stick 20 may be wrapped in at least one wrapper 24. The wrapper 24 may have at least one hole formed therein, allowing external air to enter or internal gas to escape. As an example, the stick 20 may be wrapped in a single wrapper 24. As another example, the stick 20 may be wrapped in two or more overlapping wrappers 24. For example, the tobacco rod 21 may be wrapped in a first wrapper 241. For example, the filter rod 22 may be wrapped in wrappers 242, 243, and 244. The tobacco rod 21 and the filter rod 22 wrapped in individual wrappers may be combined, and the entire stick 20 may be further wrapped in a third wrapper. If each filter rod 22 is composed of multiple segments, each segment may be wrapped in an individual wrapper 242, 243, and 244. The entire stick 20, including the combined segments wrapped in individual wrappers, may be further wrapped in another wrapper.

[0096] The first wrapper 241 and the second wrapper 242 may be made of a common filter wrapper. For example, the first wrapper 241 and the second wrapper 242 may be porous or non-porous. The first wrapper 241 and the second wrapper 242 may also be made of oil-resistant paper and / or aluminum laminate packaging material.

[0097] The third wrapper 243 may be made of hard wrapping paper. For example, the basis weight of the third wrapper 243 may be in the range of 88 g / m² to 96 g / m². For example, the basis weight of the third wrapper 243 may be in the range of 90 g / m² to 94 g / m². The thickness of the third wrapper 243 may be in the range of 120 μm to 130 μm. For example, the thickness of the third wrapper 243 may be 125 μm.

[0098] The fourth wrapper 244 may be made of oil-resistant hard wrapping paper. For example, the basis weight of the fourth wrapper 244 may be in the range of 88 g / m² to 96 g / m². For example, the basis weight of the fourth wrapper 244 may be in the range of 90 g / m² to 94 g / m². The thickness of the fourth wrapper 244 may be in the range of 120 μm to 130 μm. For example, the thickness of the fourth wrapper 244 may be 125 μm.

[0099] The fifth wrapper 245 may be made of a sterilized paper (MFW). The sterilized paper (MFW) may be specially manufactured to have improved tensile strength, water resistance, smoothness, etc. compared to general paper. For example, the basis weight of the fifth wrapper 245 may be in the range of 57 g / m² to 63 g / m². For example, the basis weight of the fifth wrapper 245 may be 60 g / m². 2 The thickness of the fifth wrapper 245 may be in the range of 64 μm to 70 μm. For example, the thickness of the fifth wrapper 245 may be 67 μm.

[0100] The fifth wrapper 245 may include a predetermined material. An example of the predetermined material may be, but is not limited to, silicon. For example, silicon may have properties such as heat resistance (i.e., small changes due to temperature), oxidation resistance (i.e., no oxidation), resistance to various chemicals, water repellency, and electrical insulation. However, any material other than silicon that has the above-mentioned properties may be applied or coated onto the fifth wrapper 245 without limitation.

[0101] The fifth wrapper 245 can prevent the stick 20 from burning. For example, when the tobacco rod 21 is heated by the heater 210, the stick 20 may burn. Specifically, if the temperature of the tobacco rod 21 rises above the flash point of any one of the materials contained in the tobacco rod 21, the stick 20 may burn. Even in such a case, the fifth wrapper 245 contains a non-flammable material, so the stick 20 can be prevented from burning.

[0102] In addition, the fifth wrapper 245 can prevent the main body 100 from being contaminated by the substance produced in the stick 20. A liquid substance can be produced in the stick 20 when the user puffs. For example, a liquid substance (e.g., water) can be produced when the aerosol produced in the stick 20 is cooled by external air. The fifth wrapper 245 wraps the stick 20, thereby preventing the liquid substance produced in the stick 20 from leaking out of the stick 20.

[0103] The tobacco rod 21 may contain an aerosol-forming substance. For example, the aerosol-forming substance may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The tobacco rod 21 may also contain other additives such as flavoring agents, humectants, and / or organic acids. A flavoring liquid such as menthol or a humectant may be added to the tobacco rod 21 by spraying it onto the tobacco rod 21.

[0104] The tobacco rod 21 can be manufactured in a variety of 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 finely chopped tobacco sheets. For example, the tobacco rod 21 can be surrounded by a thermally conductive material. For example, the thermally conductive material can be, but is not limited to, a metal foil such as aluminum foil. For example, the thermally conductive material surrounding the tobacco rod 21 can uniformly distribute heat transferred to the tobacco rod 21 and improve thermal conductivity to the tobacco rod, thereby improving the tobacco taste. The thermally conductive material surrounding the tobacco rod 21 can function as a susceptor heated by an induction heater. Although not shown in the drawings, the tobacco rod 21 can further include an additional susceptor in addition to the thermally conductive material surrounding the exterior.

[0105] The filter rod 22 may be a cellulose acetate filter. However, the shape of the filter rod 22 is not limited. For example, the filter rod 22 may be a cylindrical rod. For example, the filter rod 22 may be a tube-type rod having a hollow interior. For example, the filter rod 22 may be a recess-type rod. When the filter rod 22 is composed of multiple segments, at least one of the multiple segments may be manufactured in a different shape.

[0106] The first segment of the filter rod 22 may be a cellulose acetate filter. For example, the first segment may be a tubular structure having a hollow interior. The first segment prevents the inner material of the tobacco rod 21 from being pushed backward when the heater 110 is inserted, and also provides a cooling effect for the aerosol. The diameter of the hollow interior of the first segment may be an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto.

[0107] The length of the first segment can be 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.

[0108] 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.

[0109] The length or diameter of the second segment can be determined in various ways depending on the shape of the stick 20. For example, the length of the second segment can be appropriately set 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 to this.

[0110] The second segment can be made by weaving polymer fibers, in which case a flavor liquid can be applied to the polymer fibers, or by weaving the polymer fibers together with separate fibers that have been coated with a flavor liquid, or by forming the second segment from a crimped polymer sheet.

[0111] For example, the polymer may 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.

[0112] The second segment may be formed from woven polymer fibers or a crimped polymer sheet, such that the second segment includes one or more longitudinally extending channels, where the channels may be passageways through which a gas (e.g., air or aerosol) may pass.

[0113] For example, the second segment of crimped polymer sheet may be formed from a material having a thickness between about 5 μm and about 300 μm, such as between about 10 μm and about 250 μm, and the total surface area of ​​the second segment may be less than about 300 mm 2 / mm and approximately 1000mm 2 / mm. The aerosol cooling element may have a specific surface area of ​​about 10 mm 2 / mg and about 100mm 2 It can be made from materials between 1 / mg.

[0114] Meanwhile, the second segment can include a thread containing a volatile flavor component, which can be, but is not limited to, menthol. For example, the thread can be loaded with a sufficient amount of menthol to provide 1.5 mg or more of menthol to the second segment.

[0115] The third segment of the filter rod 22 may be a cellulose acetate filter. The length of the third segment may be appropriately selected within a range of 4 mm to 20 mm. For example, the length of the third segment may be approximately 12 mm, but is not limited to this.

[0116] The filter rod 22 may be manufactured to emit a flavor. For example, a flavoring liquid may be sprayed onto the filter rod 22. For example, a separate fiber coated with a flavoring liquid may be inserted into the filter rod 22.

[0117] The filter rod 22 may also include at least one capsule 23. The capsule 23 may function to generate a flavor. The capsule 23 may also function to generate an aerosol. For example, the capsule 23 may have a structure in which a liquid containing a flavoring agent is enclosed in a coating. The capsule 23 may have, but is not limited to, a spherical or cylindrical shape.

[0118] 6, the stick 30 according to one embodiment may further include a front-end plug 33. The front-end plug 33 is located on one side of the tobacco rod 31, facing the filter rod 32. The front-end plug 33 prevents the tobacco rod 31 from detaching to the outside. The front-end plug 33 prevents aerosol liquefied from the tobacco rod 31 during smoking from flowing into the aerosol generation device 10.

[0119] Filter rod 32 can include a first segment 321 and a second segment 322. First segment 321 can correspond to the first segment of filter rod 22 of Figure 5. Second segment 322 can correspond to the third segment of filter rod 22 of Figure 5.

[0120] The diameter and overall length of the stick 30 may correspond to the diameter and overall length of the stick 20 in Figure 5. For example, but not limited to, the length of the front end 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.

[0121] The stick 30 may be wrapped in at least one wrapper 35. The wrapper 35 may have at least one hole formed therein through which external air can enter or internal gas can escape. For example, the front end plug 33 may be wrapped in a first wrapper 351, the tobacco rod 31 may be wrapped in a second wrapper 352, the first segment 321 may be wrapped in a third wrapper 353, and the second segment 322 may be wrapped in a fourth wrapper 354. The entire stick 30 may then be rewrapped in a fifth wrapper 355.

[0122] In addition, at least one perforation 36 may be formed in the fifth wrapper 355. For example, but not limited to, the perforation 36 may be formed in the area surrounding the tobacco rod 31. For example, the perforation 36 may serve to transfer heat generated by the heater 210 shown in FIG. 3 to the interior of the tobacco rod 31.

[0123] The second segment 322 may also include at least one capsule 34. The capsule 34 may also function to generate a flavor. The capsule 34 may also function to generate an aerosol. For example, the capsule 34 may have a structure in which a liquid containing a flavoring agent is enclosed in a coating. The capsule 34 may have, but is not limited to, a spherical or cylindrical shape.

[0124] The first wrapper 351 may be formed by bonding a metal foil, such as aluminum foil, to a common filter wrapper. For example, the total thickness of the first wrapper 351 may be in the range of 45 μm to 55 μm. For example, the total thickness of the first wrapper 351 may be 50.3 μm. The thickness of the metal foil of the first wrapper 351 may be in the range of 6 μm to 7 μm. For example, the thickness of the metal foil of the first wrapper 351 may be 6.3 μm. The basis weight of the first wrapper 351 may be 50 g / m 2 ~55g / m 2 For example, the basis weight of the first wrapper 351 may be in the range of 53 g / m 2 It could be.

[0125] The second wrapper 352 and the third wrapper 353 may be made of a common filter wrapper, for example, the second wrapper 352 and the third wrapper 353 may be a porous wrapper or a non-porous wrapper.

[0126] For example, the porosity of the second wrapper 352 may be, but is not limited to, 35,000 CU. The thickness of the second wrapper 352 may be in the range of 70 μm to 80 μm. For example, the thickness of the second wrapper 352 may be 78 μm. The basis weight of the second wrapper 352 may be 20 g / m. 2 ~25g / m 2 For example, the basis weight of the second wrapper 352 may be in the range of 23.5 g / m 2 It could be.

[0127] For example, the porosity of the third wrapper 353 may be, but is not limited to, 24000 CU. The thickness of the third wrapper 353 may be in the range of 60 μm to 70 μm. For example, the thickness of the third wrapper 353 may be 68 μm. The basis weight of the third wrapper 353 may be in the range of 20 g / m2 to 25 g / m2. For example, the basis weight of the third wrapper 353 may be 21 g / m2. 2 It could be.

[0128] The fourth wrapper 354 may be made of PLA laminated paper. Here, the PLA laminated paper may be a triple-ply paper including a paper layer, a PLA layer, and another paper layer. For example, the thickness of the fourth wrapper 354 may be in the range of 100 μm to 120 μm. For example, the thickness of the fourth wrapper 354 may be 110 μm. In addition, the basis weight of the fourth wrapper 354 may be 80 g / m 2 ~100g / m 2 For example, the basis weight of the fourth wrapper 354 may be in the range of 88 g / m 2 It could be.

[0129] The fifth wrapper 355 may be made of a sterilized paper (MFW). The sterilized paper (MFW) may be specially manufactured to have improved tensile strength, water resistance, smoothness, etc. compared to general paper. For example, the basis weight of the fifth wrapper 355 is 57 g / m 2 ~63g / m 2 For example, the basis weight of the fifth wrapper 355 may be in the range of 60 g / m 2 The thickness of the fifth wrapper 355 may be in the range of 64 μm to 70 μm. For example, the thickness of the fifth wrapper 355 may be 67 μm.

[0130] The fifth wrapper 355 may include a predetermined material. An example of the predetermined material may be, but is not limited to, silicon. For example, silicon has properties such as heat resistance (i.e., small changes due to temperature), oxidation resistance (i.e., no oxidation), resistance to various chemicals, water repellency, and electrical insulation. However, any material other than silicon that has the above-mentioned properties may be applied (or coated) to the fifth wrapper 355 without limitation.

[0131] The front end plug 33 may be made of cellulose acetate. For example, the front end plug 33 may be made by adding a plasticizer (e.g., triacetin) to cellulose acetate toe. The mono-denier of the filaments constituting the cellulose acetate toe may be in the range of 1.0 to 10.0. For example, the mono-denier of the filaments constituting the cellulose acetate toe may be in the range of 4.0 to 6.0. For example, the mono-denier of the filaments constituting the front end plug 33 may be 5.0. The cross section of the filaments constituting the front end plug 33 may be Y-shaped. The total denier of the front end plug 33 may be in the range of 20,000 to 30,000. For example, the total denier of the front end plug 33 may be in the range of 25,000 to 30,000. For example, the total denier of the front end plug 33 may be 28,000.

[0132] Optionally, the front end plug 33 may also include at least one channel, the cross section of which may be fabricated in a variety of shapes.

[0133] The tobacco rod 31 may correspond to the tobacco rod 21 described above with reference to Figure 5. Therefore, a detailed description of the tobacco rod 31 will be omitted below.

[0134] The first segment 321 may be made of cellulose acetate. For example, the first segment may be a hollow, tubular structure. The first segment 321 may be made of cellulose acetate to which a plasticizer (e.g., triacetin) is added. For example, the mono-denier and total denier of the first segment 321 may be the same as the mono-denier and total denier of the front end plug 33.

[0135] The second segment 322 may be made of cellulose acetate. The mono denier of the filaments constituting the second segment 322 may be in the range of 1.0 to 10.0. For example, the mono denier of the filaments of the second segment 322 may be in the range of 8.0 to 10.0. For example, the mono denier of the filaments of the second segment 322 may be 9.0. The cross section of the filaments of the second segment 322 may be Y-shaped. The total denier of the second segment 322 may be in the range of 20,000 to 30,000. For example, the total denier of the second segment 322 may be 25,000.

[0136] 7, the stick 40 may include a medium portion 410. The stick 40 may include a cooling portion 420. The stick 40 may include a filter portion 430. The cooling portion 420 may be disposed between the medium portion 410 and the filter portion 430. The stick 40 may include a wrapper 440. The wrapper 440 may encase the medium portion 410. The wrapper 440 may encase the cooling portion 420. The wrapper 440 may encase the filter portion 430. The stick 40 may have a cylindrical shape.

[0137] The medium portion 410 may include a medium 411. The medium portion 410 may include a first medium cover 413. The medium portion 410 may include a second medium cover 415. The medium 411 may be disposed between the first medium cover 413 and the second medium cover 415. The first medium cover 413 may be disposed at one end of the stick 40. The length of the medium portion 410 may be 24 mm.

[0138] The medium 411 may contain various substances. The substances contained in the medium may be flavoring substances. The medium 411 may be composed of a plurality of granules. Each of the granules may have a size of 0.4 mm to 1.12 mm. The medium 411 may be filled with the granules approximately 70% of the interior thereof. The length L2 of the medium 411 may be 10 mm. The first medium cover 413 may be made of acetate material. The second medium cover 415 may be made of acetate material. The first medium cover 413 may be made of paper material. The second medium cover 415 may be made of paper material. At least one of the first medium cover 413 and the second medium cover 415 may be made of paper material and may have a wrinkled shape, forming a plurality of gaps between them for air to flow. The gaps may be smaller than the size of each granule of the medium 411. The length L1 of the first medium cover 413 may be shorter than the length L2 of the medium 411. The length L3 of the second medium cover 413 may be shorter than the length L2 of the medium 411. The length L1 of the first medium cover 413 may be 7 mm. The length L2 of the second medium cover 413 may be 7 mm.

[0139] Therefore, each granule of the medium 411 cannot be separated from the medium portion 410 and the stick 40 .

[0140] The cooling portion 420 may have a cylindrical shape. The cooling portion 420 may have a hollow shape. The cooling portion 420 may be disposed between the medium portion 410 and the filter portion 430. The cooling portion 420 may be disposed between the second medium portion 415 and the filter portion 430. The cooling portion 420 may be formed in a tubular shape surrounding the cooling passage 424 therein. The cooling portion 420 may be thicker than the wrapper 440. The cooling portion 420 may be made of a paper material that is thicker than the wrapper 440. The length L4 of the cooling portion 420 may be the same as or approximately the same as the length L2 of the medium 411. The length L4 of the cooling portion 420 and the cooling passage 424 may be 10 mm. When the stick 40 is inserted into the aerosol generation device 10, at least a portion of the cooling portion 420 may be exposed to the outside of the aerosol generation device 10.

[0141] Therefore, the cooling unit 420 supports the medium unit 410 and the filter unit 430, thereby ensuring the rigidity of the stick 40. Furthermore, the cooling unit 420 supports the wrapper 440 between the medium unit 410 and the filter unit 430, thereby ensuring a location where the wrapper 440 is adhered. Furthermore, the heated air and aerosol can be cooled while passing through the cooling passage 424 inside the cooling unit 420.

[0142] The filter part 430 may be made of an acetate filter. The filter part 430 may be disposed at the other end of the stick 40. When the stick 40 is inserted into the aerosol generating device 10, the filter part 430 may be exposed to the outside of the aerosol generating device 10. A user may hold the filter part 430 in their mouth and inhale air. The length L5 of the filter part 430 may be 14 mm.

[0143] The wrapper 440 may wrap or surround the medium portion 410, the cooling portion 420, and the filter portion 430. The wrapper 440 may form the outer shape of the stick 40. The wrapper 440 may be made of a paper material. The adhesive portion 441 may be formed on one side edge of the wrapper 440. The wrapper 440 wraps the medium portion 410, the cooling portion 420, and the filter portion 430, and the adhesive portion 441 formed on one side edge and the other side edge may be adhered to each other. The wrapper 440 wrapping the medium portion 410, the cooling portion 420, and the filter portion 430 does not have to cover one end and the other end of the stick 40.

[0144] Therefore, the wrapper 440 can fix the medium portion 410, the cooling portion 420 and the filter portion 430 and prevent them from coming off the stick 40.

[0145] The first thin film 443 may be disposed at a position corresponding to the first medium cover 413. The first thin film 443 may be disposed between the wrapper 440 and the first medium cover 413, or may be disposed outside the wrapper 440. The first thin film 443 may surround the first medium cover 413. The first thin film 443 may be made of a metal material. The first thin film 443 may be made of an aluminum material. The first thin film 443 may be adhered to or coated on the wrapper 440.

[0146] The second thin film 445 may be disposed at a position corresponding to the second medium cover 415. The second thin film 445 may be disposed between the wrapper 440 and the second medium cover 415, or may be disposed outside the wrapper 440. The second thin film 445 may be made of a metal material. The second thin film 445 may be made of an aluminum material. The second thin film 445 may be adhered to or coated on the wrapper 440.

[0147] FIG. 8 is a flowchart illustrating a method of operating an aerosol generating device according to one embodiment of the present disclosure.

[0148] 8, the aerosol generating device 10 may preheat the heater using a first power corresponding to preheating the heater in operation S810. Here, "preheating" may mean maintaining or increasing the temperature of the heater at a certain level for aerosol generation. For example, the aerosol generating device 10 may supply a predetermined first power to the heater in the preheating section based on a temperature profile stored in the memory 14.

[0149] According to one embodiment, the power supplied to the heater in the preheating section may vary depending on the number of puffs, the time elapsed in the preheating section, etc. For example, the predetermined power supplied to the heater for a predetermined time in the first preheating section may be set higher than the predetermined power supplied to the heater in subsequent preheating sections.

[0150] In operation S820, the aerosol generating device 10 may determine whether the temperature of the heater is equal to or higher than a predetermined first temperature while the first power is supplied to the heater. Here, the first temperature may correspond to the maximum temperature of the heater in the preheating section.

[0151] The aerosol generating device 10 can continuously preheat the heater using the first power while the heater temperature is below the first temperature. Monitoring of the heater temperature will be described with reference to FIG.

[0152] Referring to FIG. 9, the aerosol generating device 10 may include a light emitting device 120, a temperature sensor 150, a battery 16, a power supply circuit 160, and / or a heater 210.

[0153] According to an embodiment of the present disclosure, the main body 100 may be provided with a light emitting device 120, a temperature sensor 150, a battery 16, and / or a power supply circuit 160. The cartridge 200 may be provided with a heater 210.

[0154] When the main body 100 and the cartridge 200 are coupled together, the temperature sensor 150 of the main body 100 may be electrically connected to the heater 210 of the cartridge 200. For example, the temperature sensor 150 may be a current sensor that detects a current.

[0155] The light emitting device 120 may be a light emitting diode (LED) that emits light.

[0156] The power supply circuit 160 disposed inside the main body 100 can supply power to the heater 210 using the power stored in the battery 16. Here, the power supplied from the power supply circuit 160 to the heater 210 can be adjusted under the control of the control unit 17.

[0157] The power supply circuit 160 may include at least one switching element operated under the control of the control unit 17. Here, power may be supplied to the heater 210 by operation of the switching element. For example, the switching element may be a bipolar junction transistor (BJT) or a field effect transistor (FET).

[0158] When the heater 210 and the temperature sensor 150 are electrically connected, the same level of current may flow through the heater 210 and the temperature sensor 150. Here, the resistance value Rs of the shunt resistor included in the temperature sensor 150 may be a value that does not change depending on the temperature.

[0159] The control unit 17 can determine the voltage V1 applied to the heater 210 and the temperature sensor 150 based on the power supplied from the power supply circuit 160 to the heater 210, the current flowing through the heater 210 and the temperature sensor 150, etc. The control unit 17 can calculate the voltage V2 applied to the shunt resistor of the temperature sensor 150 based on the current flowing through the shunt resistor and the resistance value Rs of the shunt resistor. Here, the control unit 17 can calculate the voltage applied to the heater 210 as the difference (V1-V2) between the voltage V1 applied to the heater 210 and the temperature sensor 150 and the voltage V2 applied to the shunt resistor. The control unit 17 can also calculate the resistance value Rh of the heater 210 based on the voltage applied to the heater 210 and the current flowing through the heater 210.

[0160] Therefore, even while the wick is being heated by the heater 210, the control unit 17 can determine the temperature of the heater 210 in real time using the current flowing through the heater 210 calculated via the temperature sensor 150.

[0161] Meanwhile, the resistor of the heater 210 may be a material having a temperature coefficient of resistance, and the resistance value Rh of the heater 210 may change depending on the temperature of the resistor. The control unit 17 can calculate the temperature of the heater 210 based on the temperature coefficient of the resistor of the heater 210, the resistance value Rh of the heater 210, and the resistance value of the heater 210 at a reference temperature using a calculation formula for calculating the temperature of the heater 210. Here, the calculation formula for calculating the temperature of the heater 210 can be expressed as the following Equation 1.

[0162] (Number 1) TCR = (R1 - R0) / R0 ÷ (T1 - T0)

[0163] In Equation 1, TCR is the temperature coefficient of resistance of the heater 210, T1 is the temperature of the heater 210, R1 is the resistance value of the heater 210, T0 is the reference temperature, and R0 is the resistance value of the heater 210 at the reference temperature, where T0 is 25°C and R0 is the resistance value of the heater 210 at 25°C.

[0164] Meanwhile, although this drawing illustrates a current sensor connected in series to the heater 210, the present invention is not limited to this, and the temperature sensor 150 may be a temperature sensor arranged adjacent to the heater 210 to detect the temperature of the heater 210, a voltage sensor to detect the voltage applied to the heater 210, etc.

[0165] In operation S830, when the temperature of the heater is equal to or higher than the first temperature, the aerosol generation device 10 can change the power supplied to the heater to a second power lower than the first power. For example, when the heater is preheated using a power of 0.5 W and the temperature of the heater is equal to or higher than the first temperature, the aerosol generation device 10 can change the power supplied to the heater to 0.3 W.

[0166] According to one embodiment, the second power may be determined based on a predetermined power supplied to the heater in the preheating section. For example, the second power in the preheating section may be set to be a predetermined power lower than the predetermined power supplied to the heater in the preheating section. For example, the second power in the preheating section may be set to be a certain percentage lower than the predetermined power supplied to the heater in the preheating section. For example, the second power in the heating section may be set to be a predetermined power lower than the predetermined power supplied to the heater in the heating section.

[0167] In operation S840, the aerosol generating device 10 can preheat the heater using a second power lower than the first power corresponding to the preheating of the heater.

[0168] In operation S850, the aerosol generating device 10 may determine whether the heater temperature is equal to or greater than a predetermined second temperature while the second power is supplied to the heater. Here, the second temperature may be a temperature corresponding to the consumption of the aerosol generating material. For example, the second temperature may be set to a temperature higher than the first temperature.

[0169] The aerosol generating device 10 can continuously preheat the heater using the second power while the temperature of the heater is below the second temperature, with the second power being supplied to the heater.

[0170] In operation S860, the aerosol generating device 10 may interrupt preheating of the heater when the heater temperature is equal to or higher than the second temperature. That is, the aerosol generating device 10 may determine that the aerosol generating material is exhausted when the heater temperature is equal to or higher than the second temperature while the second power is being supplied to the heater. Here, the aerosol generating device 10 may cut off the supply of power to the heater in response to the exhaustion of the aerosol generating material.

[0171] According to one embodiment, the aerosol generating device 10 can emit light corresponding to the consumption of the aerosol generating material via the light emitting device 120 that emits light when the temperature of the heater is equal to or higher than a second temperature.

[0172] 10 and 11, the aerosol generating device 10 may preheat the heater using a first power P1 corresponding to preheating of the heater. Here, while the first power P1 is supplied to the heater, the temperature of the heater may be maintained at a target temperature T0 in the preheating section. If the liquid transfer means contains a sufficient amount of aerosol-generating material, the temperature of the heater may be maintained at a constant level even if the first power P1 is continuously supplied to the heater.

[0173] Meanwhile, when the aerosol generating material is not consumed, the temperature of the heater may rise above the first predetermined temperature T1 while the first power P1 is being supplied to the heater. For example, when the amount of aerosol generating material flowing through the liquid transfer means temporarily decreases while the aerosol generating material is not consumed, the temperature of the heater may rise above the first predetermined temperature T1.

[0174] When the temperature of the heater is equal to or higher than a predetermined first temperature T1, the aerosol generating device 10 can change the power supplied to the heater to a second power P2 lower than the first power P1. Here, when the power supplied to the heater is changed to the second power P2 while the aerosol generating material is not consumed, the temperature of the heater can be lowered below the first temperature T1 or maintained at the first temperature T1.

[0175] Meanwhile, referring to FIGS. 12 and 13, when the aerosol-generating material is consumed, the temperature of the heater may rise above a predetermined first temperature T1 while the first power P1 is supplied to the heater.

[0176] The aerosol generating device 10 can change the power supplied to the heater to a second power lower than the first power when the heater temperature is equal to or higher than a predetermined first temperature T1. Here, if the aerosol generating material is consumed, the heater temperature may continue to rise even if the power supplied to the heater is changed to the second power lower than the first power. That is, if the aerosol generating material is consumed and the liquid transfer means no longer contains the aerosol generating material, the heater temperature may rise too much even at a relatively low power.

[0177] In a state where the second power is supplied to the heater, when the temperature of the heater is equal to or higher than a predetermined second temperature T2, the aerosol generation device 10 can cut off the supply of power to the heater.

[0178] 14 and 15 are flowcharts showing an operation method of an aerosol generating device according to another embodiment of the present disclosure. Detailed description of the contents that overlap with the contents described in FIG. 8 will be omitted.

[0179] Referring to FIG. 14, in operation S1401, the aerosol generating device 10 can preheat the heater using a first power corresponding to preheating the heater.

[0180] In operation S1402, the aerosol generating device 10 may determine whether a puff is detected by the puff sensor included in the sensor module 15 while the heater is preheated by the first power.

[0181] If no puff is detected in operation S1403, the aerosol generating device 10 may determine whether the temperature of the heater is equal to or higher than a predetermined first temperature while a first power is supplied to the heater.

[0182] The aerosol generating device 10 can preheat the heater using the first power while the temperature of the heater is below the first temperature in a state where no puff is detected.

[0183] In operation S1404, when the temperature of the heater is equal to or higher than the first temperature, the aerosol generation device 10 can change the power supplied to the heater to a second power lower than the first power.

[0184] In operation S1405, the aerosol generating device 10 can preheat the heater using a second power lower than the first power corresponding to the preheating of the heater.

[0185] In operation S1406, the aerosol generating device 10 may determine whether a puff is detected by the puff sensor included in the sensor module 15 while the heater is preheated by the second power.

[0186] In operation S1403, if a puff is not detected, the aerosol generating device 10 may determine whether the temperature of the heater is equal to or higher than a predetermined second temperature while the second power is supplied to the heater. If a puff is not detected and the temperature of the heater is lower than the second temperature, the aerosol generating device 10 may preheat the heater using the second power.

[0187] In operation S1408, if the heater temperature is equal to or higher than the second temperature, the aerosol generating device 10 may update the number of times the heater temperature is detected to be equal to or higher than the second temperature. For example, if the current number of times of detection is three, the aerosol generating device 10 may update the number of times of detection to four.

[0188] The aerosol generating device 10 may determine whether the number of detections is less than a predetermined number in operation S1409. While the number of detections is less than the predetermined number, the aerosol generating device 10 may continue to preheat the heater using the second power.

[0189] In operation S1410, the aerosol generating device 10 can interrupt preheating of the heater if the number of detections is equal to or greater than a predetermined number.

[0190] 15, when a puff is detected, the aerosol generating device 10 may determine whether the number of detections is equal to or greater than a predetermined minimum number of times in operation S1501. For example, when a puff is detected while the heater is being preheated by the first power, the number of detections may be less than one, which is the predetermined minimum number of times.

[0191] In operation S1502, if the number of detections is equal to or greater than a predetermined minimum number, the aerosol generating device 10 can start heating the heater using a third power higher than the first power.

[0192] In operation S1503, if the number of detections is less than a predetermined minimum number of times, the aerosol generating device 10 can start heating the heater using a fourth power higher than the third power.

[0193] The aerosol generation device 10 may heat the heater based on a temperature profile in operation S1504. For example, the aerosol generation device 10 may heat the heater based on either a temperature profile corresponding to a third power or a temperature profile corresponding to a fourth power. That is, when the number of detections in the preheating section is equal to or greater than the minimum number, the aerosol generation device 10 may heat the heater at a lower power than when the number of detections is less than the minimum number, in order to prevent carbonization of the liquid transfer means. This may prevent carbonization of the liquid transfer means.

[0194] In operation S1505, the aerosol generating device 10 can determine whether the puff is interrupted using the puff sensor included in the sensor module 15. When the aerosol generating device 10 determines that the puff is interrupted, it can preheat the heater using a first power corresponding to preheating the heater.

[0195] As described above, at least one of the embodiments of the present disclosure can accurately determine whether the aerosol-generating material has been consumed in the preheating section.

[0196] According to at least one embodiment of the present disclosure, the power supplied to the heater in the heating section may be adjusted based on whether the aerosol generating material in the preheating section has been consumed.

[0197] 1 to 15 , an aerosol generating device 10 according to one aspect of the present disclosure may include a heater 210 that heats an aerosol-generating material, a temperature sensor 150 that senses the temperature of the heater 210, and a control unit 17 that monitors the temperature of the heater 210 via the temperature sensor 150. The control unit 17 may determine whether the temperature of the heater 210 is equal to or higher than a predetermined first temperature when a first power corresponding to preheating of the heater 210 is supplied to the heater 210. If the temperature of the heater 210 is equal to or higher than the first temperature, the control unit 17 may change the power supplied to the heater 210 to a second power lower than the first power. If the temperature of the heater 210 is equal to or higher than a second temperature higher than the first temperature when the second power is supplied to the heater 210, the control unit 17 may cut off the power supply to the heater 210.

[0198] According to another aspect of the present disclosure, the control unit 17 may monitor the number of times that the temperature of the heater 210 is detected to be equal to or higher than the second temperature while the second power is being supplied to the heater 210. If the number of times that the temperature of the heater 210 is detected is equal to or higher than a predetermined number, the control unit 17 may cut off the power supply to the heater 210.

[0199] According to another aspect of the present disclosure, the device may further include a light-emitting device 120 that emits light. When the temperature of the heater 210 is equal to or higher than the second temperature, the controller 17 may emit light corresponding to the consumption of the aerosol generating material through the light-emitting device 120.

[0200] According to another aspect of the present disclosure, the control unit 17 may control the first power to be supplied to the heater 210 when the user's inhalation is stopped.

[0201] According to another aspect of the present disclosure, the control unit 17 may control the heater 210 to receive a predetermined power when the user inhales. The predetermined power may correspond to a third power higher than the first power when the number of times the temperature of the heater 210 is detected to be equal to or higher than the second temperature is equal to or greater than a minimum number. The predetermined power may correspond to a fourth power higher than the third power when the number of times the temperature is detected is less than the minimum number.

[0202] Meanwhile, an operating method of the aerosol generating device 10 according to one aspect of the present disclosure may include an operation of determining whether the temperature of the heater 210 is equal to or higher than a predetermined first temperature when a first power corresponding to preheating of the heater 210 is supplied to the heater 210; an operation of changing the power supplied to the heater 210 to a second power lower than the first power when the temperature of the heater 210 is equal to or higher than the first temperature; and an operation of cutting off the power supply to the heater 210 when the temperature of the heater 210 is equal to or higher than a second temperature higher than the first temperature when the second power is supplied to the heater 210.

[0203] According to another aspect of the present disclosure, the operation of cutting off the power supply to the heater 210 may include an operation of monitoring the number of times that the temperature of the heater 210 is detected to be equal to or higher than the second temperature, and an operation of cutting off the power supply to the heater 210 if the number of times of detection is equal to or higher than a predetermined number.

[0204] According to another aspect of the present disclosure, the method may further include an operation of emitting light corresponding to the consumption of the aerosol generating material via a light-emitting device 120 that emits light when the temperature of the heater 210 is equal to or greater than the second temperature.

[0205] According to another aspect of the present disclosure, the method may further include setting the first power to a power corresponding to the preheating when the user's inhalation is interrupted.

[0206] According to another aspect of the present disclosure, the method may further include supplying a predetermined power to the heater 210 during inhalation by a user. The predetermined power may correspond to a third power higher than the first power when the number of times the temperature of the heater 210 is detected to be equal to or higher than the second temperature is equal to or greater than a minimum number. The predetermined power may correspond to a fourth power higher than the third power when the number of times the temperature is detected is less than the minimum number.

[0207] The specific embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct, and the structure or function of any or all elements of the embodiments of the present disclosure described above can be combined with other elements or combined with each other.

[0208] For example, configuration A described in one embodiment of the present disclosure and drawings and configuration B described in another embodiment of the present disclosure and drawings can be combined with each other. That is, even if a combination between configurations is not directly described, the combination is possible unless it is described that the combination is not possible.

[0209] While the embodiments have been described above in accordance with a number of exemplary embodiments, it should be understood that many other variations and embodiments are possible for those skilled in the art that fall within the scope of the principles of the present disclosure. More particularly, various modifications and variations are possible in the components and / or arrangements of the subject 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 the aerosol generating material; a temperature sensor that detects the temperature of the heater; a control unit; The control unit monitoring the temperature of the heater based on input received from the temperature sensor; determining whether the temperature of the heater is equal to or higher than a predetermined first temperature in a state where a first power corresponding to preheating of the heater is supplied to the heater; When the temperature of the heater is equal to or higher than the first temperature, the power supplied to the heater is changed to a second power lower than the first power; When the number of times that the temperature of the heater is detected to be equal to or higher than the second temperature is equal to or greater than a predetermined number of times while the second power is being supplied to the heater, the power supply to the heater is cut off; The aerosol generating device, wherein the second temperature is higher than the first temperature.

2. further comprising a light emitting device that emits light; The aerosol generating device according to claim 1 , wherein the control unit emits light through the light emitting device to indicate consumption of the aerosol generating material when the temperature of the heater is equal to or higher than the second temperature.

3. The aerosol generating device according to claim 1 , wherein the control unit further controls the first power supplied to the heater when the user stops inhaling.

4. The control unit further controls a predetermined amount of power supplied to the heater when the user inhales, when the number of times that the temperature of the heater is detected to be equal to or higher than the second temperature is equal to or greater than a minimum number of times, the predetermined power corresponds to a third power that is higher than the first power; 2. The aerosol generating device according to claim 1, wherein when the number of times is less than the minimum number of times, the predetermined power corresponds to a fourth power higher than the third power.

5. 1. A method of operating an aerosol generating device having a heater, comprising: an operation of determining whether the temperature of the heater is equal to or higher than a predetermined first temperature while a first power corresponding to preheating of the heater is supplied to the heater; changing the power supplied to the heater to a second power lower than the first power when the temperature of the heater is equal to or higher than the first temperature; and an operation of cutting off the supply of power to the heater when the number of times that the temperature of the heater is detected to be equal to or higher than the second temperature is equal to or greater than a predetermined number of times while the second power is being supplied to the heater, The method of operating an aerosol generating device, wherein the second temperature is higher than the first temperature.

6. The method for operating an aerosol generating device according to claim 5, further comprising controlling a light emitting device that emits light indicating the consumption of the aerosol generating material when the temperature of the heater is equal to or higher than the second temperature.

7. The method of claim 5, further comprising controlling the first power supplied to the heater when a user's inhalation is interrupted.

8. The method further includes supplying a predetermined amount of power to the heater when the user inhales, when the number of times that the temperature of the heater is determined to be equal to or higher than the second temperature is equal to or greater than a minimum number of times, the predetermined power corresponds to a third power that is higher than the first power; The method for operating an aerosol generating device according to claim 5 , wherein if the number of times is less than the minimum number of times, the predetermined power corresponds to a fourth power higher than the third power.

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