RU2845002C2 - Aerosol generating device (versions) - Google Patents

Abstract

FIELD: aerosol generating devices.

SUBSTANCE: group of inventions relates to embodiments of an aerosol generating device. Aerosol-generating device comprises a chamber configured to store a liquid, a heater configured to heat the liquid, resistance recognition sensor configured to supply a signal corresponding to the resistance of the heater, and a controller configured to calculate a temperature of the heater based on a resistance of the heater. Controller is configured to determine whether a temperature of the heater is greater than a first temperature in response to the detected power being applied to the heater in a first preheating period, performing control such that a first power is transmitted to the heater in a heating period following a first pre-heating period if a temperature of the heater is equal to or less than a first temperature, performing control so that a second power is supplied to the heater, the value of which is less than the first power, during the heating period, if the temperature of the heater exceeds the first temperature, determining whether the temperature of the heater exceeds a second temperature exceeding a first temperature in response to the detected power being applied to the heater in a second pre-heating period at the end of the heating period, if the heater temperature exceeds the first temperature, and determining whether the liquid has been consumed if the heater temperature exceeds the second temperature.

EFFECT: providing a smooth supply of the liquid substance for generating an aerosol to the liquid supply member, based on the temperature of the heater during the preheating period, and accurate determination of spent liquid substance for aerosol generation based on heater temperature during preheating period.

14 cl, 16 dwg

Description

Field of technology

[1] The present invention relates to a device for generating an aerosol.

Prior art

[2] An aerosol generating device is a device that extracts certain components from a medium or substance by forming an aerosol. The medium may contain a multi-component substance. The substance contained in the medium may be a multi-component flavoring substance. For example, the substance contained in the medium may contain a nicotine component, a plant component, and/or a coffee component. Recently, various studies have been conducted on aerosol generating devices.

The essence of the invention

Technical task

[3] The purpose of the present invention is to eliminate the above-mentioned and other disadvantages.

[4] A further object of the present invention is to provide an aerosol generating device capable of determining the smoothness of feeding a liquid substance for generating an aerosol to a liquid feeding element based on the temperature of the heater during a preheating period.

[5] A further object of the present invention is to provide an aerosol generating device capable of smoothly supplying a liquid substance for generating an aerosol to a liquid supply element if there is no liquid substance for generating an aerosol in the liquid supply element.

[6] A further object of the present invention is to provide an aerosol generating device capable of accurately determining the consumption of a liquid substance for generating an aerosol based on the temperature of a heater during a preheating period.

Technical solution

[7] The set tasks are solved by the device for generating an aerosol according to the first aspect of the present invention, which can comprise a chamber configured to store a liquid, a heater configured to heat the liquid, a resistance sensor configured to supply a signal corresponding to the resistance of the heater, and a controller configured to calculate the temperature of the heater based on the resistance of the heater. The controller can determine whether the temperature of the heater exceeds the first temperature in response to supplying the recognized power to the heater in the first preheating period, control so that the first power is supplied to the heater in the heating period after the first preheating period if the temperature of the heater is equal to or less than the first temperature, control so that a second power, the value of which is less than the first power, is supplied to the heater in the heating period if the temperature of the heater exceeds the first temperature, determine whether the temperature of the heater exceeds the second temperature, which is greater than the first temperature, in response to supplying the recognized power to the heater in the second preheating period after the heating period if the temperature of the heater exceeds the first temperature, and determine the fact of liquid consumption if the temperature of the heater exceeds the second temperature.

Beneficial effects of the invention

[8] In at least one embodiment of the present invention, it is possible to determine whether a liquid substance for generating an aerosol is smoothly supplied to the liquid supply element based on the temperature of the heater during the preheating period.

[9] In at least one embodiment of the present invention, it is possible to smoothly supply a liquid substance for generating an aerosol to a liquid supply element if there is no liquid substance for generating an aerosol in the liquid supply element.

[10] In at least one embodiment of the present invention, the consumption of a liquid substance for generating an aerosol can be accurately determined based on the temperature of the heater during the preheating period.

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

Description of drawings

[12] The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

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

[14] FIGS. 2-4 are views illustrating an aerosol generating device according to embodiments of the present invention.

[15] FIGS. 5 and 6 illustrate a stick according to embodiments of the present invention.

[16] FIG. 7 is a diagram illustrating a configuration of an aerosol generating device according to one embodiment of the present invention.

[17] FIGS. 8A-8C are block diagrams of a method for operating an aerosol generating device according to one embodiment of the present invention.

[18] FIGS. 9-14 are diagrams illustrating the operation of an aerosol generating device according to one embodiment of the present invention.

Principle of the invention

[19] Embodiments of the present invention are described below in detail with reference to the accompanying drawings. The same or similar elements are denoted by the same reference numerals even if they are shown in different drawings, and redundant descriptions thereof will be omitted.

[20] In the following description, with respect to the constituent elements used in the following description, the terms "module" and "block" are used only for ease of description. The terms "module" and "block" do not have mutually distinct meanings or functions.

[21] Furthermore, in the following description of the embodiments of the invention in the present document, a detailed description of known functions and configurations that are part of the present description will be omitted if this may make the subject matter of the described embodiments of the invention unclear. In addition, the accompanying drawings are provided only for a better understanding of the described embodiments of the invention, and are not intended to limit the technical ideas described. Therefore, it should be understood that the accompanying drawings contain all modifications, equivalents and replacements within the scope and spirit of the present invention.

[22] It should be understood that the terms "first", "second", etc. may be used in this document to describe various components. However, these components should not be limited to these terms. These terms are used solely to distinguish one component from another.

[23] It should be understood that when a component is referred to as being "connected to" or "linked to" another component, it may be directly connected or linked to the other component. However, it should be understood that there may be intermediate components. On the other hand, when a component is referred to as being "directly connected to" or "directly linked to" another component, there are no intermediate components.

[24] The singular form implies both singular and plural nouns, except when the context clearly indicates otherwise.

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

[26] As shown in FIG. 1, the aerosol generating device 10 may comprise a data exchange 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 controller 17.

[27] In one embodiment of the invention, the aerosol generating device 10 may comprise 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 of the invention, the aerosol generating device 10 may comprise a cartridge that contains an aerosol generating substance and a main body. In this case, the components included in the aerosol generating device 10 may be located in the main body and/or the cartridge.

[28] The data exchange interface 11 may comprise at least one data exchange module for communicating with an external device and/or a network. For example, the data exchange interface 11 may comprise a data exchange module for wired communication, such as a universal serial bus (USB). For example, the data exchange interface 11 may comprise a data exchange module for wireless communication, such as Wireless Fidelity (Wi-Fi), Bluetooth, Bluetooth Low Energy (BLE), ZigBee, or near field communication (NFC).

[29] The input/output interface 12 may comprise an input device (not shown) for receiving a command from a user and/or an output device (not shown) for outputting information to the user. For example, the input device may comprise a touch panel, a physical button, a microphone, etc. For example, the output device may comprise a display for outputting visual information, such as a display or a light-emitting diode (LED), an audio device for outputting audio information, such as a speaker or a buzzer, a motor for outputting tactile information, such as a tactile effect, etc.

[30] The input/output interface 12 may transmit data corresponding to a command entered by a user via the input device to another component (or other components) of the aerosol generating device 100. The input/output interface 12 may output information corresponding to data received from the other component (or other components) of the aerosol generating device 10 via the output device.

[31] The aerosol generating module 13 may generate an aerosol from an aerosol generating substance. In this case, the aerosol generating substance may be a substance in a liquid state, a solid state, or a gelatinous state capable of generating an aerosol, or a combination of two or more aerosol generating substances.

[32] In one embodiment of the invention, the liquid aerosol generating substance may be a liquid that includes a tobacco-containing material with a volatile tobacco flavoring component. In another embodiment of the invention, the liquid aerosol generating substance may be a liquid that includes a non-tobacco material. For example, the liquid aerosol generating substance may contain water, solvents, nicotine, plant extracts, flavorings, aromatic substances, vitamin mixtures, etc.

[33] The solid substance for generating an aerosol may comprise a solid material based on a tobacco raw material such as a reconstituted tobacco leaf, shredded tobacco or granulated tobacco. In addition, the solid substance for generating an aerosol may comprise a solid material containing a taste-adjusting substance and a flavoring material. Examples of the taste-adjusting substance may comprise calcium carbonate, sodium bicarbonate, calcium oxide, etc. For example, the flavoring material may comprise a natural material such as plant granules, or may comprise a material such as silicon dioxide, zeolite or dextrin that contains a flavoring ingredient.

[34] In addition, the aerosol generating substance may further comprise an aerosol forming substance such as glycerin or propylene glycol.

[35] The aerosol generating module 13 may comprise at least one heater (not shown).

[36] The aerosol generating module 13 may comprise an electrically resistive heater. For example, the electrically resistive heater may comprise at least one electrically conductive path. The electrically resistive heater may be heated by passing current through the electrically conductive path. In this case, the substance for generating the aerosol may be heated by means of the electrically resistive heater.

[37] The conductive path may comprise an electrically resistive material. In one example, the conductive path may be made of a metallic material. In another example, the conductive path may be made of a ceramic material, carbon, a metal alloy, or a composite of a ceramic material and a metal.

[38] The electrically resistive heater may comprise a conductive path having any of a variety of shapes. For example, the conductive path may have any of the following shapes: a tube, a plate, a needle, a rod, and a coil.

[39] The aerosol generating module 13 may comprise a heater using an induction heating method. For example, the induction heater may comprise an electrically conductive winding. The induction heater may generate an alternating electromagnetic field that periodically changes direction by regulating the current passing through the electrically conductive winding. In this case, when the alternating electromagnetic field is applied to the magnetic body, energy losses may occur in the magnetic body due to eddy current losses and hysteresis. In addition, the lost energy may be released as thermal energy. Accordingly, the aerosol generating substance located near the magnetic body may be heated. In this case, the object that generates heat due to the electromagnetic field may be called a current collector.

[40] Meanwhile, the aerosol generating module 13 can generate ultrasonic vibrations to thereby generate an aerosol from the aerosol generating substance.

[41] The aerosol generating device 10 may be referred to as a cartomizer, atomizer, or vaporizer.

[42] Memory 14 can store programs for processing and controlling each signal in controller 17. Memory 14 can store processed data and data to be processed.

[43] For example, memory 14 may store applications designed to perform various tasks that may be processed by controller 17. Memory 14 may selectively provide some of the stored applications in response to a request from controller 17.

[44] For example, the memory 14 may store data on the operating time of the aerosol generating device 100, the maximum number of puffs, the current number of puffs, the number of uses of the battery 16, at least one temperature profile, the user's inhalation pattern, and charge/discharge data. In this case, "puff" means inhalation by the user. "Inhalation" means the action of the user to suck air or other substances into the oral cavity, nose, or lungs of the user through the mouth or nose of the user.

[45] Memory 14 may comprise at least one of the following: volatile memory (e.g., dynamic random access memory (DRAM), static random access memory (SRAM), or synchronous dynamic random access memory (SDRAM)), non-volatile memory (e.g., flash memory), a hard disk drive (HDD), or a solid state drive (SSD).

[46] The sensor module 15 may comprise at least one sensor.

[47] For example, the sensor module 15 may comprise a sensor for recognizing a puff (hereinafter referred to as the "puff sensor"). In this case, the puff sensor may be implemented as a proximity sensor, such as an IR sensor, a pressure sensor, a microphone, a gyroscope, an acceleration sensor, a magnetic field sensor, etc.

[48] For example, the sensor module 15 may comprise a sensor for recognizing a tightening (hereinafter referred to as the “tightening sensor”). In this case, the tightening sensor may be implemented as a pressure sensor, a gyroscopic sensor, an acceleration sensor, an electromagnetic field sensor, etc.

[49] For example, the sensor module 15 may comprise a sensor for measuring the temperature of the heater included in the aerosol generating module 13 and the temperature of the aerosol generating substance (hereinafter referred to as the "temperature sensor"). In this case, the heater included in the aerosol generating module 13 may also serve as a temperature sensor. For example, the electrically resistive material of the heater may be a material having a predetermined temperature coefficient of resistance. The sensor module 15 may measure the resistance of the heater, which changes depending on the temperature, to thereby measure the temperature of the heater.

[50] For example, if the main body of the aerosol generating device 10 is designed such that a stick can be inserted into it, the sensor module 15 may comprise a sensor for recognizing the insertion of the stick (hereinafter referred to as the “stick recognition sensor”).

[51] For example, if the aerosol generating device 10 comprises a cartridge, the sensor module 15 may comprise a sensor for recognizing the installation/removal of the cartridge and the position of the cartridge (hereinafter referred to as a “cartridge recognition sensor”).

[52] In this case, the stick recognition sensor and/or the cartridge recognition sensor may be implemented as an inductive sensor, a capacitive sensor, a resistance sensor, or a Hall effect sensor (or an integrated circuit based on the Hall effect) using the Hall effect.

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

[54] The battery 16 may supply power used to operate the aerosol generating device 10 under the control of the controller 17. The battery 16 may supply power to other components provided in the aerosol generating device 100. For example, the battery 16 may supply power to a data exchange module included in the data exchange interface 11, an output device included in the input/output interface 12, and a heater included in the aerosol generating module 13.

[55] The battery 16 may be a rechargeable battery or a disposable battery. For example, the battery 16 may be a lithium-ion (Li-ion) or a lithium-polymer (Li-polymer) battery. However, the present invention is not limited to this embodiment. For example, when the battery 16 is a rechargeable battery, the charge rate (C-rate) of the battery 16 may be 10 C, and the discharge rate (C-rate) may be from 10 C to 20 C. However, the present invention is not limited to this embodiment. In addition, for stable use, the battery 16 may be designed such that 80% or more of the total capacity can be provided even after 2000 charge/discharge cycles.

[56] The aerosol generating device 10 may further comprise a protection circuit module (PCM) that is a protection circuit for the battery 16. The protection circuit module (PCM) may be located near the top surface of the battery 16. For example, in order to prevent overcharging and overdischarging of the battery 16, the protection circuit module (PCM) may disconnect the electrical circuit to the battery 16 when a short circuit occurs in the circuit connected to the battery 16, when excessive voltage is supplied to the battery 16, or when excessive current flows through the battery 16.

[57] The aerosol generating device 10 may further comprise a charging terminal to which electric power is supplied from the outside. For example, the charging terminal may be formed on one side of the main body of the aerosol generating device 100. The aerosol generating device 10 may charge the battery 16 with electric power supplied through the charging terminal. In this case, the charging terminal may be formed as a USB communication wire terminal, a spring contact, etc.

[58] The aerosol generating device 10 may further comprise a power terminal (not shown) through which electric power is supplied from outside. For example, the power line may be connected to a power terminal located on one side of the main body of the aerosol generating device 100. The aerosol generating device 10 may use the electric power supplied through the power line connected to the power terminal to charge the battery 16. In this case, the power terminal may be a wire terminal for USB communication.

[59] The aerosol generating device 10 may receive power from outside via a wireless network through the data exchange interface 11. For example, the aerosol generating device 10 may receive power wirelessly, using an antenna included in the data exchange module for wireless communication. The aerosol generating device 10 may charge the battery 16 using the power supplied via a wireless network.

[60] The controller 17 may control the operation of the aerosol generating device 100 as a whole. The controller 17 may be connected to each of the components provided in the aerosol generating device 100. The controller 17 may transmit and/or receive a signal to and/or from each of the components, thereby controlling the operation of each of the components as a whole.

[61] The controller 17 may comprise at least one processor. The controller 17 may control the operation of the aerosol generating device 10 as a whole using a processor built into it. In this case, the processor may be a conventional processor, such as a central processing unit (CPU). Of course, the processor may be a specialized device, such as an application-specific integrated circuit (ASIC), or may be any other processor based on hardware.

[62] The controller 17 may perform any of the plurality of functions of the aerosol generating device 100. For example, the controller 17 may perform any of the plurality of functions of the aerosol generating device 10 (for example, a preheating function, a heating function, a charging function, and a cleaning function) in accordance with the state of each of the components provided in the aerosol generating device 10 and a user command received through the input/output interface 12.

[63] The controller 17 may control the operation of each of the components provided in the aerosol generating device 10 based on the data stored in the memory 14. For example, the controller 17 may control the supply of a given amount of power from the battery 16 to the module 13 for generating an aerosol for a given time based on the data about the temperature profile, the power profile and the inhalation pattern of the user stored in the memory 14.

[64] The controller 17 may determine the presence or absence of a puff using a puff sensor included in the sensor module 15. For example, the controller 17 may monitor a change in temperature, a change in flow rate, a change in pressure, and a change in voltage in the aerosol generating device 10 based on the values obtained by the puff sensor. The controller 17 may determine the presence or absence of a puff based on the value obtained by the puff sensor.

[65] The controller 17 may control the operation of each of the components provided in the aerosol generating device 10 in accordance with the presence or absence of a puff and/or the number of puffs. For example, the controller 17 may control in such a way that the temperature of the heater is changed or maintained in accordance with a temperature profile stored in the memory 14.

[66] The controller 17 may control such that the power supply to the heater is interrupted in accordance with a predetermined condition. For example, the controller 17 may control such that the power supply to the heater is interrupted when the stick is removed, when the cartridge is dismantled, when the number of puffs reaches a predetermined maximum number of puffs, when a puff is not felt for a predetermined period of time or longer, or when the remaining capacity of the battery 16 is less than a predetermined value.

[67] The controller 17 may calculate the remaining capacity in relation to the total capacity of the battery 16. For example, the controller 17 may calculate the remaining capacity of the battery 16 based on values obtained by the voltage sensor and/or the current sensor included in the sensor module 15.

[68] The controller 17 may perform control such that electrical power is supplied to the heater by means of pulse width modulation (PWM) and/or proportional integral derivative (PID) control.

[69] For example, the controller 17 may perform control so that a current pulse having a specified frequency and a specified duty cycle is supplied to the heater by means of a PWM method. In this case, the controller 17 may control the amount of electric power supplied to the heater by adjusting the frequency and duty cycle of the current pulse.

[70] For example, the controller 17 may determine a target temperature to be controlled based on a temperature profile. In this case, the controller 17 may control the amount of electric power supplied to the heater by means of PID control, which is a feedback control method using a difference value between the heater temperature and the target temperature, a value obtained by integrating the difference value over time, and a value obtained by differentiating the difference value over time.

[71] Although PWM and PID methods are described as examples of methods for controlling the supply of electrical power to a heater, the present invention is not limited thereto, and may use any of various control methods, such as a proportional-integral (PI) method or a proportional-derivative (PD) method.

[72] Meanwhile, the controller 17 may perform control so that the supply of electric power to the heater is interrupted in accordance with a predetermined condition. For example, when the cleaning function for cleaning the space into which the stick is inserted is selected in response to a command input by the user through the input/output interface 12, the controller 17 may perform control so as to supply a predetermined amount of electric power to the heater.

[73] FIGS. 2-4 are views illustrating an aerosol generating device according to embodiments of the present invention.

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

[75] As shown in FIG. 2, an aerosol generating device 10 according to one embodiment of the invention may comprise a main body 100 and a cartridge 200. The main body 100 may support the cartridge 200, and the cartridge 200 may contain a substance for generating an aerosol.

[76] In one embodiment of the invention, the cartridge 200 may be removably mounted on the main body 100. In another embodiment of the invention, the cartridge 200 may be formed as a single unit with the main body 100. For example, the cartridge 200 may be mounted on the main body 100 such that at least a portion of the cartridge 200 enters an insertion space formed by the body 101 of the main body 100.

[77] The main body 100 may be structured such that external air can enter the main body 100 in a state in which the cartridge 200 is inserted therein. In this case, the external air entering the main body 100 can enter the user's mouth through the cartridge 200.

[78] The controller 17 may determine whether the cartridge 200 is in an installed or removed state using a cartridge recognition sensor included in the sensor module 15. For example, the cartridge recognition sensor may transmit a pulse current through a first terminal connected to the cartridge 200. In this case, the controller 17 may determine whether the cartridge 200 is in a connected state based on whether the pulse current is received through another terminal.

[79] The cartridge 200 may comprise a reservoir 220 configured to contain an aerosol-generating substance therein, and/or a heater 210 configured to heat the aerosol-generating substance in the reservoir 220. For example, a liquid delivery element impregnated with (containing) an aerosol-generating substance may be located inside the reservoir 220. The electrically conductive path of the heater 210 may be made in the form of a structure that is wound around the liquid delivery element. In this case, when the liquid delivery element is heated by the heater 210, an aerosol can be generated. In this case, the liquid delivery element may comprise a wick made, for example, of cotton fiber, ceramic fiber, glass fiber or porous ceramic material.

[80] The cartridge 200 may comprise a mouthpiece 225. In this case, the mouthpiece 225 may be a portion designed to be inserted into the oral cavity of the user. The mouthpiece 225 may have an outlet through which the aerosol is released during puffing.

[81] As shown in FIG. 3, the cartridge 200 may comprise an insertion space 230 configured to insert the stick 20 therein. For example, the cartridge 200 may comprise an insertion space defined by an inner wall extending in a circumferential direction in the direction in which the stick 20 is inserted. In this case, the insertion space may be formed by opening the inner side of the inner wall upward and downward. The stick 20 may be inserted into the insertion space defined by the inner wall.

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

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

[84] A portion of the stick 20 may be inserted into the insertion space and the remaining portion of the stick 20 may be pulled out.

[85] The user may inhale the aerosol by biting one end of the stick 20 with the mouth. The aerosol generated by the heater 210 may pass through the stick 20 and enter the user's mouth. In this case, when the aerosol passes through the stick 20, the material contained in the stick 20 may be added to the aerosol. The aerosol obtained from the material may enter the oral cavity of the user through one end of the stick 20.

[86] The controller 17 may monitor the number of puffs based on the value received by the puff sensor from the moment the stick 20 is inserted.

[87] When the stick 20 is removed, the controller 17 may initialize the current number of puffs stored in the memory 14.

[88] The cartridge 200 may comprise a second heater 215 configured to heat the stick 20. The second heater 215 may be located in the cartridge 200 in a position corresponding to the position of the stick 20 after insertion into the insertion space 230. The second heater 215 may be implemented as an electrically conductive heater and/or an induction heater. The second heater 215 may heat the inner and/or outer portion of the stick 20 using power supplied by the battery 16.

[89] As shown in FIG. 4, an aerosol generating device 10 according to one embodiment of the invention may comprise a main body 100 supporting a cartridge 200 and a cartridge 200 containing a substance for generating an aerosol. The main body 100 may be configured such that the stick 20 can be inserted into an insertion space 1300 inside the body.

[90] The aerosol generating device 10 may comprise a first heater 210 for heating an aerosol generating substance stored in a cartridge 200 and/or a second heater 215 for heating a stick 20 inserted into the main body 100. For example, the aerosol generating device 10 may generate an aerosol by heating an aerosol generating substance stored in a cartridge 200 and a stick 20 using the first heater 210 and the second heater 115, respectively.

[91] The stick 20 may be similar to a conventional combustible cigarette. For example, the stick 20 may comprise a first portion containing an aerosol generating material and a second portion containing a filter or other similar element. Alternatively, the aerosol generating material may be located in the second portion of the stick 20. For example, a flavoring substance in the form of granules or capsules may be introduced into the second portion.

[92] Hereinafter, the present invention will be described with reference to an embodiment of the invention in which the stick 20 is inserted into the insertion space 130 formed in the body 101 of the main body 100.

[93] FIGS. 5 and 6 illustrate a stick according to embodiments of the present invention.

[94] As shown in FIG. 5, the stick 20 may comprise a tobacco rod 21 and a filter rod 22. The first portion, described above with reference to FIG. 4, may comprise the tobacco rod. The second portion, described above with reference to FIG. 4, may comprise the filter rod 22.

[95] FIG. 5 shows that the filter rod 22 comprises one segment. However, the design of the filter rod 22 is not limited to this embodiment. In other words, the filter rod 22 may comprise a plurality of segments. For example, the filter rod 22 may comprise a first segment configured to cool the aerosol and a second segment configured to filter a specific component contained in the aerosol. In addition, if necessary, the filter rod 22 may further comprise at least one segment configured to perform other functions.

[96] The diameter of the stick 20 may be from 5 to 9 mm, and its length may be about 48 mm, but embodiments of the invention are not limited to this embodiment. For example, the length of the tobacco rod 21 may be about 12 mm, the length of the first segment of the filter rod 22 may be about 10 mm, the length of the second segment of the filter rod 22 may be about 14 mm, and the length of the third segment of the filter rod 22 may be about 12 mm, but embodiments of the invention are not limited to this embodiment.

[97] The stick 20 may be wrapped with at least one wrapper 24. The wrapper 24 may have at least one opening through which external air may enter or internal air may exit. For example, the stick 20 may be wrapped with one wrapper 24. In another example, the stick 20 may be wrapped with at least two wrappers 24. For example, the tobacco rod 21 may be wrapped with the first wrapper 241. For example, the filter rod 22 may be wrapped with wrappers 242, 243, 244. The tobacco rod 21 and the filter rod 22 wrapped with wrappers may be combined. The stick 20 can be re-wrapped with a single wrapper 245. If the tobacco rod 21 and the filter rod 22 comprise a plurality of segments, each segment can be wrapped with wrappers 242, 243, 244. The entire stick 20, consisting of a plurality of segments wrapped with wrappers, can be re-wrapped with another wrapper.

[98] The first wrapper 241 and the second wrapper 242 may be made of general-purpose wrapping paper for filters. For example, the first wrapper 241 and the second wrapper 242 may be made of porous or non-porous wrapping paper. In addition, the first wrapper 241 and the second wrapper 242 may be made of an oil-resistant paper sheet and an aluminum multilayer packaging material.

[99] The third wrapper 243 may be made of rigid wrapping paper. For example, the density of the material of the third wrapper 243 may be, in particular, from 88 g/ ^m2 to 96 g/ ^m2 . For example, the density of the material of the third wrapper 243 may be, in particular, from 90 g/ ^m2 to 94 g/ ^m2 . In addition, the total thickness of the third wrapper 243 may be from 1200 μm to 1300 μm. For example, the total thickness of the third wrapper 243 may be 125 μm.

[100] The fourth wrapper 244 may be made of oil-resistant rigid wrapping paper. For example, the density of the material of the fourth wrapper 244 may be approximately from 88 g/ ^m2 to 96 g/ ^m2 . For example, the density of the material of the fourth wrapper 244 may be, in particular, from 90 g/ ^m2 to 94 g/ ^m2 . Thus, the total thickness of the fourth wrapper 244 may be from 1200 to 1300 μm. For example, the total thickness of the fourth wrapper 244 may be 125 μm.

[101] The fifth wrapper 245 may be made of sterilized paper (MFW). In this case, MFW is understood to mean paper specially manufactured to impart tensile strength, water resistance, smoothness and other similar properties, wherein these properties are improved in comparison with ordinary paper. For example, the density of the material of the fifth wrapper 245 may be, in particular, from 57 g/m ² to 63 g/m ² . For example, the density of the fifth wrapper 245 may be approximately 60 g/m ² . Thus, the total thickness of the fifth wrapper 245 may be from 64 to 70 μm. For example, the total thickness of the fifth wrapper 245 may be 67 μm.

[102] The fifth wrapper 245 may include a predetermined material. In this case, an example of a predetermined material may be silicon; other options are also possible. For example, silicon has characteristics such as heat resistance with slight changes due to temperature, oxidation resistance, resistance to various chemicals, water-repellent properties, dielectric properties, etc. However, any material other than silicon may be applied (or a coating made from) to the fifth wrapper 245 without limitation, provided that this material has the above-mentioned characteristics.

[103] The fifth wrapper 245 can prevent the stick 20 from burning. For example, when the tobacco rod 21 is heated by the heater 110, there is a possibility that the stick 20 will ignite. More specifically, when the temperature rises to a temperature exceeding the ignition point of any of the materials included in the tobacco rod 21, the stick 20 may ignite. Even in this case, the stick 20 can be prevented from burning because the fifth wrapper 245 contains a non-combustible material.

[104] In addition, the fifth wrapper 245 can prevent the aerosol generating device 100 from being contaminated with substances generated by the stick 20. As a result of the user's puff, liquid substances can be generated in the stick 20. For example, when the aerosol generated by the stick 20 is cooled by outside air, liquid materials (such as moisture, etc.) can be generated. The fifth wrapper 245 wrapped around the stick 20 can prevent the liquid materials generated in the stick 20 from leaking out of the stick 20.

[105] The tobacco rod 21 may comprise an aerosol generating material. For example, the aerosol generating material may comprise at least one of the following components: glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol, as well as other components. In addition, the tobacco rod 21 may comprise other additives, in particular, flavors, a humectant and/or an organic acid. Also, the tobacco rod 21 may comprise a flavored liquid, in particular, menthol or a humectant, injected into the tobacco rod 21.

[106] The tobacco rod 21 can be made in various shapes. For example, the tobacco rod 21 can be formed in the form of a sheet or a strand. In addition, the tobacco rod 21 can be formed in the form of a pipe tobacco consisting of tiny pieces cut from a tobacco leaf. In addition, the tobacco rod 21 can be surrounded by a heat-conducting material. For example, the heat-conducting material can be, among other things, a metal foil, such as, for example, aluminum foil. For example, the heat-conducting material surrounding the tobacco rod 21 can evenly distribute the heat transferred to the tobacco rod 21, which makes it possible to increase the thermal conductivity applied to the tobacco rod and improve the taste of the tobacco. In addition, the heat-conducting material surrounding the tobacco rod 21 can serve as a current collector heated by an induction heater. In this case, although not shown in the drawings, the tobacco rod 21 may comprise an additional current collector along with the heat-conducting material surrounding the tobacco rod 21.

[107] The filter rod 22 may comprise a cellulose acetate filter. The filter rod 22 may have any shape. For example, the filter rod 22 may have the shape of a hollow cylinder or a hollow tube. In addition, the filter rod 22 may comprise a rod with a recess. If the filter rod 22 comprises a plurality of segments, at least one of the plurality of segments may have a different shape.

[108] The first segment of the filter rod 22 may be a filter made of cellulose acetate. For example, the first segment may be made of a structure in the form of a tube with a hollow interior. The first segment may prevent the internal material of the tobacco rod 21 from being pushed out when the heater 110 is inserted into the tobacco rod 21, and may also cool the aerosol. The diameter of the cavity of the first segment may be from 2 to 4.5 mm; other variations are also possible.

[109] The first segment may have a suitable length in the range from 4 to 30 mm; other variations are also possible. For example, the length of the first segment may be 10 mm; other variations are also possible.

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

[111] The length or diameter of the second segment may vary depending on the shape of the stick 20. For example, the length of the second segment may be from 7 to 20 mm. Preferably, the length of the second segment may be approximately 14 mm; other variations are also possible.

[112] The second segment may be made by weaving a polymer fiber. In this case, the flavoring liquid may also be applied to the fiber formed from the polymer. Alternatively, the second segment may be made by weaving an additional fiber coated with a flavoring liquid and a fiber formed from the polymer. Alternatively, the second segment may be made from a corrugated polymer sheet.

[113] For example, the polymer may be selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactide (PLA), cellulose acetate (CA), and aluminum foil.

[114] Since the second segment is formed by a woven polymer fiber or a corrugated polymer sheet, the second segment may contain one or more channels oriented in the longitudinal direction. In this case, a channel is understood to be a channel through which a gas (e.g., air or aerosol) flows.

[115] For example, the second segment made from a corrugated polymer sheet may be formed from a material having a thickness of about 5 to 300 μm, such as about 10 to 250 μm. In addition, the total surface area of the second segment may be about 300 mm ² /mm to 1000 mm ² /mm. In addition, the aerosol cooling element may be formed from a material having a specific surface area of about 10 mm ² /mg to 100 mm ² /mg.

[116] The second segment may comprise a thread containing volatile aromatic ingredients. In this case, the volatile aromatic ingredient may be, in particular, menthol. For example, the thread may be filled with a sufficient amount of menthol to provide a menthol content of 1.5 mg or more in the second segment.

[117] The third segment of the filter rod 22 may be a cellulose acetate filter. The length of the third segment may be from 4 to 20 mm. For example, the length of the third segment may be approximately 12 mm, but other variations are also possible.

[118] The filter rod 22 may be made with the possibility of obtaining aromas. For example, an aromatizing liquid may be injected into the filter rod 22. For example, additional fibers coated with an aromatizing liquid may be inserted into the filter rod 22.

[119] In addition, the filter rod 22 may contain at least one capsule 23. In this case, the capsule 23 may generate a flavor. The capsule 23 may generate an aerosol. For example, the capsule 23 may have a configuration in which the liquid containing the flavoring material is wrapped in a film. The capsule 23 may have the shape of a sphere or a cylinder, but other options are also possible.

[120] As shown in FIG. 6, the stick 30 may further comprise a front plug 33. The front plug 33 may be located on the side of the tobacco rod 31 opposite the filter rod 32. The front plug 33 may prevent the tobacco rod 31 from detaching and liquefied aerosol from entering the aerosol generating device 10 from the tobacco rod 31 during smoking.

[121] The filter rod 32 may comprise 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. 4. The segment 322 may correspond to the third segment of the filter rod 22 in FIG. 4.

[122] The diameter and overall length of the stick 30 may correspond to the diameter and overall length of the stick 20 in FIG. 4. For example, the length of the front plug 33 may be approximately 7 mm, the length of the tobacco rod 31 may be approximately 15 mm, the length of the first segment 321 may be approximately 12 mm, and the length of the second segment 322 may be approximately 14 mm, but embodiments of the invention are not limited to this option.

[123] The stick 30 may be wrapped in at least one wrapper 35. The wrapper 35 may have at least one opening through which external air may enter or internal air may exit. For example, the front plug 33 may be wrapped in a first wrapper 351, the tobacco rod 31 in a second wrapper 352, the first segment 321 in a third wrapper 353, and the second segment 322 in a fourth wrapper 354. In addition, the entire stick 30 may be re-wrapped in a fifth wrapper 355.

[124] In addition, the fifth wrapper 355 may have at least one perforation 36. For example, the perforation 36 may be formed, in particular, in the region of the fifth wrapper 355 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 tobacco rod 31.

[125] Also, the second segment 322 may contain at least one capsule 34. In this case, the capsule 34 may generate a fragrance. The capsule 34 may generate an aerosol. For example, the capsule 34 may have a configuration in which the liquid containing the fragrance material is wrapped in a film. The capsule 34 may have the shape of a sphere or a cylinder, but other options are also possible.

[126] The first wrapper 351 may be made by combining a general-purpose wrapping paper for filters and a metal foil, such as aluminum foil. For example, the total thickness of the first wrapper 351 may be from 45 to 55 μm. For example, the total thickness of the first wrapper 351 may be 50.3 μm. In addition, the thickness of the metal foil of the first wrapper 351 may be from 6 to 7 μm. For example, the thickness of the metal foil of the first wrapper 351 may be 6.3 μm. In addition, the density of the material of the first wrapper 351 may be from 50 g/m ² to 55 g/m ² . For example, the density of the first wrapper 351 may be 53 g/m ² .

[127] The second wrapper 352 and the third wrapper 353 may be made of general-purpose wrapping paper for filters. For example, the second wrapper 352 and the third wrapper 353 may be made of porous or non-porous wrapping paper.

[128] For example, the porosity of the second wrapper 352 may be 35,000 AU; other variations are also possible. In addition, the thickness of the second wrapper 352 may be from 70 to 80 μm. For example, the thickness of the second wrapper 352 may be 78 μm. The density of the material of the second wrapper 352 may be from 20 g/m ² to 25 g/m ² . For example, the density of the second wrapper 352 may be 23.5 g/m ² .

[129] For example, the porosity of the third wrapper 353 may be 24,000 CU; other variations are also possible. In addition, the thickness of the third wrapper 353 may be approximately 60 to 70 μm. For example, the thickness of the third wrapper 353 may be 68 CU. The density of the third wrapper 353 may be approximately 20 g/ ^m2 to 25 g/ ^m2 . For example, the density of the third wrapper 353 may be 21 g/ ^m2 .

[130] The fourth wrapper 354 may be formed from polylactide-laminated paper. In this case, the polylactide-laminated paper refers to a three-layer paper comprising a paper layer, a polylactide layer, and a paper layer. For example, the thickness of the fourth wrapper 353 may be from 100 to 1200 μm. For example, the thickness of the fourth wrapper 353 may be 110 μm. In addition, the density of the fourth wrapper 354 may be from 80 g/m ² to 100 g/m ² . For example, the density of the fourth wrapper 354 may be 88 g/m ² .

[131] The fifth wrapper 355 may be made of sterile paper (MFW). In this case, sterile paper (MFW) refers to paper that is specially made to improve tensile strength, water resistance, smoothness, etc., compared to ordinary paper. For example, the density of the material of the fifth wrapper 355 may be from 57 g/ ^m2 to 63 g/ ^m2 . For example, the density of the fifth wrapper 355 may be 60 g/ ^m2 . In addition, the thickness of the fifth wrapper 355 may be from 64 to 70 μm. For example, the thickness of the fifth wrapper 355 may be 67 μm.

[132] The fifth wrapper 355 may have a specified material added thereto. An example of the material may be silicon, but other materials are also possible. Silicon has characteristics such as heat resistance, resistance to temperature conditions, oxidation resistance, resistance to the effects of various chemicals, water-repellent properties, dielectric properties, etc. In addition to silicon, any other materials having the characteristics described above may be applied (or coated) to the fifth wrapper 355, without limitation.

[133] The front plug 33 may be made of cellulose acetate. For example, the front plug 33 may be formed by adding a plasticizer (for example, triacetin) to a cellulose acetate fiber. The monodenier of the threads constituting the cellulose acetate fiber may be from 1.0 to 10.0. For example, the monodenier of the threads constituting the cellulose acetate fiber may be from 4.0 to 6.0. The monodenier of the threads of the front plug 33 may be 5.0. In addition, the cross-section of the threads of the front plug 33 may have a Y-shape. More preferably, the total denier of the front plug 33 may be from 20,000 to 30,000. For example, the total denier of the front plug 33 may be from 25,000 to 30,000. For example, the total denier of the front plug 33 may be 28,000.

[134] In addition, if necessary, the front plug 33 may comprise at least one channel. The cross-section of the channel may have various shapes.

[135] The tobacco rod 31 may correspond to the tobacco rod 21 described above with reference to FIG. 4. Therefore, hereinafter, a detailed description of the tobacco rod 31 will be omitted.

[136] The first segment 321 may be made of cellulose acetate. For example, the first segment 321 may be formed in the form of a tube with a hollow interior. For example, the first segment 321 may be formed by adding a plasticizer (e.g., triacetin) to the cellulose acetate fiber. For example, the monodenier and the total denier of the first segment 321 may match the monodenier and the total denier of the front plug 33.

[137] The second segment 322 may be made of cellulose acetate. The monodenier of the yarn of the second segment 322 may be from 1.0 to 10.0. For example, the monodenier of the yarn of the second segment 322 may be approximately 8.0 to 10.0. For example, the monodenier of the yarn of the second segment 322 may be 9.0. In addition, the cross-section of the yarn of the second segment 322 may have a Y-shape. The total denier of the second segment 322 may be from 20,000 to 30,000. For example, the total denier of the second segment 322 may be 25,000.

[138] As shown in FIG. 7, the aerosol generating device 10 may comprise a resistance recognition sensor 150, a temperature sensor 153, a puff sensor 155, a battery 16, a power supply circuit 160, and/or a first heater 210.

[139] In one embodiment of the present invention, the resistance recognition sensor 150, the puff sensor 155, the battery 16 and/or the power supply circuit 160 may be located in the main body 100. The first heater 210 may be located in the cartridge 200.

[140] When the main body 100 and the cartridge 200 are connected to each other, the resistance recognition sensor 150 of the main body 100 may be electrically connected to the first heater 210 of the cartridge 200. For example, the resistance recognition sensor 150 may be a current sensor for recognizing current.

[141] The power supply circuit 160 located in the main body 100 can supply power to the first heater 210 using the energy of the battery 16. In this case, the amount of power supplied from the power supply circuit 160 to the first heater 210 can be adjusted under the control of the controller 17.

[142] The power supply circuit 160 may include a converter that converts the voltage at the output of the battery 16. For example, the power supply circuit 160 may include a step-down converter that reduces the voltage at the output of the battery 16. In the present invention, the step-down converter is given as an example of a configuration for converting voltage, but embodiments of the invention are not limited to this example. For example, the power supply circuit 1210 may include a combination converter, a zener diode, and other components.

[143] The power supply circuit 160 may comprise at least one switching element that operates under the control of the controller 17. In this case, power may be supplied to the first heater 210 in response to the operation of the switching element. For example, the switching element may be a bipolar transistor (BJT) or a field-effect transistor (FET).

[144] When the first heater 210 and the resistance recognition sensor 150 are electrically connected to each other, a current of the same magnitude can flow through the first heater 210 and the resistance recognition sensor 150. In this case, the resistance Rs of the shunt resistor provided in the resistance recognition sensor 150 may not change with a change in temperature.

[145] The controller 17 may determine a voltage V1 applied to the first heater 210 and the resistance recognition sensor 150 based on the power supplied from the power supply circuit 160 to the first heater 210 and the current flowing through the first heater 210 and the resistance recognition sensor 150. The controller 17 may calculate a voltage V2 supplied to the shunt resistor of the resistance recognition sensor 150 based on the current flowing through the shunt resistor and the resistance Rs of the shunt resistor. In this case, the controller 17 may calculate the voltage applied to the first heater 210 as the difference (V1-V2) between the voltage V1 applied to the first heater 210 and the resistance recognition sensor 150 and the voltage V2 applied to the shunt resistor. In addition, the controller 17 can calculate the resistance Rh of the first heater 210 based on the voltage applied to the first heater 210 and the current flowing through the first heater 210.

[146] Accordingly, the controller 17 can determine the temperature of the first heater 210 in real time based on the current flowing through the first heater 210 and calculated by the resistance recognition sensor 150, even if the wick is heated by the first heater 210.

[147] Meanwhile, the resistor of the first heater 210 may be made of a material with a temperature coefficient of resistance, and the resistance Rh of the first heater 210 may change depending on the change in temperature of the resistor. The controller 17 may calculate the temperature of the first heater 210 based on the temperature coefficient of resistance of the first heater 210, the resistance Rh of the first heater 210, and the resistance of the first heater 210 at a reference temperature using a calculation formula for the temperature of the first heater 210. In this case, the calculation formula used to calculate the temperature of the first heater 210 may be the following formula 1.

[148] [Formula 1]

[149]

[150] In the above formula, 1 TCR expresses the temperature coefficient of the resistance of the first heater 210, T1 is the temperature of the first heater 210, R1 is the resistance of the first heater 210, T0 is the reference temperature, and R0 is the resistance of the first heater 210 at the reference temperature. In this case, T0 is 25°C, and R0 is the resistance of the first heater 210 at 25°C.

[151] Although in this drawing the current sensor is shown as connected in series with the first heater 210, the present invention is not limited to this embodiment. As the resistance recognition sensor 150, a temperature sensor located near the first heater 210 and intended to detect the temperature of the first heater 210, or a voltage sensor intended to detect a voltage applied to the first heater 210, may be provided.

[152] The temperature sensor 153 may output a signal corresponding to the temperature of the gas supplied to the aerosol generating device 10. For example, the temperature sensor 153 may be located in a channel through which the gas supplied to the aerosol generating device 10 flows. In this embodiment, the invention, the temperature sensor 153 is described as a sensor configured to transmit a signal corresponding to the temperature of the gas supplied to the aerosol generating device 10, but the present invention is not limited to this embodiment. For example, the temperature sensor 153 may be a sensor located near the battery 16 and intended to detect the temperature of the battery 16.

[153] The puff sensor 155 may output a signal corresponding to a puff. For example, the puff sensor 155 may output a signal corresponding to the internal pressure of the aerosol generating device 10. In this case, the internal pressure of the aerosol generating device 10 may correspond to the pressure in the channel through which the gas flows. In this embodiment, the puff sensor 155 is described as a pressure sensor configured to transmit a signal corresponding to the internal pressure of the aerosol generating device 10, but the present invention is not limited to this embodiment.

[154] Meanwhile, in one embodiment of the invention, the temperature sensor 153 and the puff sensor 155 may be formed as a single component.

[155] The controller 17 may determine a puff based on a signal received from the puff sensor 155. For example, the controller 17 may determine the fact of a puff based on a recognized signal value from the puff sensor 155. For example, the controller 17 may determine the intensity of a puff based on a recognized signal value from the puff sensor 155. For example, the controller 17 may determine a period of time during which a puff occurs (hereinafter, a puff period) based on a recognized signal value from the puff sensor 155.

[156] Upon detecting a puff, the controller 17 may control the aerosol generating module 13. For example, upon detecting a puff, the controller 17 may control the aerosol generating module 13 so as to supply power to the first heater 210 included in the aerosol generating module 13.

[157] Upon detecting a puff, the controller 17 may update the data stored in the memory 14. For example, after detecting a puff, the controller 17 may update the current number of puffs stored in the memory 14. For example, after detecting a puff, the controller 17 may update the data on the intensity of the puff stored in the memory 14.

[158] FIGS. 8A-8C are block diagrams of a method for operating an aerosol generating device according to one embodiment of the present invention.

[159] As shown in FIG. 8A, the aerosol generating device 10 may supply a predetermined power to the first heater 210 in the first preheating period in step S801. In this case, the predetermined power may refer to the power (hereinafter, the recognized power) supplied to the first heater 210 to determine the temperature of the first heater 210.

[160] In this embodiment of the invention, the period during which the aerosol is generated by heating the first heater 210 in response to the detection of a puff by the puff sensor 155 may be called a heating period. Meanwhile, the period in which a puff is not detected, for example, the interval from the end of the puff until the time the puff is detected again, may be called a preheating period.

[161] The aerosol generating device 10 may supply a predetermined minimum power (hereinafter, preheating power) to the first heater 210 if the preheating period has started to count. In this case, the preheating power may be less than the recognized power. For example, the aerosol generating device 10 may supply the preheating power to the first heater 210 from the beginning of the preheating period.

[162] In one embodiment, the aerosol generating device 10 may supply a recognized power exceeding the preheating power to the first heater 210 if a predetermined time has elapsed from the beginning of the preheating period. In this case, the predetermined time may correspond to the time during which the liquid enters the liquid supply element (for example, the wick) in excess of a certain level. Meanwhile, the time during which the recognized power is supplied to the first heater 210 may be less than the predetermined time. For example, the predetermined time may be 3 seconds, and the time of supplying the recognized power may be 0.1 seconds.

[163] The aerosol generating device 10 may determine in step S802 whether the temperature of the first heater 210 corresponding to the supply of the recognized power exceeds a predetermined first temperature. In this case, the first temperature may be a temperature (for example, 210°C) corresponding to a case in which liquid is supplied to the liquid supply member (for example, a wick) at a level below a certain level. For example, if the liquid substance for generating the aerosol is not consumed, the temperature of the first heater 210 may be temporarily increased compared to the first temperature by supplying the recognized power when the amount of the substance for generating the aerosol supplied to the liquid supply member temporarily decreases due to the formation of bubbles in the chamber.

[164] The aerosol generating device 10 may stop preheating the first heater 210 if the temperature of the first heater 210 exceeds the first temperature in step S803. For example, the aerosol generating device 10 may interrupt supplying the preheating power to the first heater 210. This allows the liquid to be supplied to the liquid supply member (for example, the wick) more smoothly before the start of the heating period in a state in which the liquid substance for generating the aerosol is not consumed.

[165] The aerosol generating device 10 may, in step S804, reduce the power supplied to the first heater 210 in the heating period in which the first heater 210 is heated, if the temperature of the first heater 210 exceeds a first temperature. The aerosol generating device 10 may reduce the level of power supplied to the first heater 210 and/or the time of supplying the power to the first heater 210 in the heating period, if the temperature of the first heater 210 exceeds the first temperature.

[166] In one embodiment of the invention, if the temperature of the first heater 210 detected in the first pre-heating period is equal to or less than the first temperature, the first heating power may be supplied to the first heater 210 in a subsequent heating period. Meanwhile, if the temperature of the first heater 210 detected in the first pre-heating period exceeds the first temperature, a second heating power less than the first heating power may be supplied to the first heater 210 in a subsequent heating period. That is, the aerosol generating device 10 may supply a relatively low power to the first heater 210 in the heating period if it is determined that the liquid supply level to the liquid supply member (for example, the wick) is below a certain level. This makes it possible to more smoothly supply the liquid to the liquid supply member (for example, the wick) until the recognized power is supplied to the first heater 210 in the second pre-heating period in a state in which the liquid substance for generating the aerosol is not consumed.

[167] In one embodiment of the invention, if the temperature of the first heater 210 detected in the first preheating period is equal to or less than the first temperature, power may be supplied to the first heater 210 for a first heating time in the subsequent heating period. Meanwhile, if the temperature of the first heater 210 detected in the first preheating period exceeds the first temperature, power may be supplied to the first heater 210 for a second heating time that is less than the first heating time in the subsequent heating period. That is, the aerosol generating device 10 may supply power to the first heater 210 for a relatively short time in the heating period if it is determined that the liquid supply level to the liquid supply element (for example, the wick) is below a certain level. This allows the liquid to be supplied to the liquid supply element (e.g., the wick) more smoothly until the recognized power is supplied to the first heater 210 in the second preheating period in a state in which the liquid substance for generating the aerosol is not consumed.

[168] The aerosol generating device 10 may determine in step S805 whether a puff is detected by the puff sensor 155. For example, the aerosol generating device 10 may determine the fact of a puff if the internal pressure of the aerosol generating device 10 is less than a reference pressure. For example, the aerosol generating device 10 may determine the fact of a puff if the change in the internal pressure of the aerosol generating device 10 is greater than or equal to a minimum change.

[169] The aerosol generating device 10 may heat the first heater 210 in step S806 based on the detection of the puff. For example, the aerosol generating device 10 may supply the first heater 210 with a second heating power that is less than the first heating power. In this case, the second heating power supplied to the first heater 210 during the heating period may exceed the recognized power.

[170] In one embodiment of the invention, the specified power supplied to the first heater 210 during the heating period may vary depending on the number of puffs, the elapsed time in the heating period, and other parameters. For example, the power supplied to the heater 210 during the detection of a puff may decrease over time.

[171] The aerosol generating device 10 may determine in step S807 whether to stop heating the first heater 210. The aerosol generating device 10 may stop heating the first heater 210 when the puff is completed. For example, the aerosol generating device 10 may determine that the puff is completed if the internal pressure of the aerosol generating device 10 is less than the reference pressure. For example, the aerosol generating device 10 may determine that the puff is completed if the gradient corresponding to the change in the internal pressure of the aerosol generating device 10 exceeds 0.

[172] The aerosol generating device 10 may supply the recognized power to the first heater 210 in the second preheating period in step S808. For example, the aerosol generating device 10 may supply the recognized power to the first heater 210 if a predetermined time has elapsed from the beginning of the second preheating period.

[173] The aerosol generating device 10 may determine in step S809 whether the temperature of the first heater 210 corresponding to the supply of the recognized power exceeds a predetermined second temperature. In this case, the second temperature may be higher than the first temperature. The second temperature may be equal to a temperature (for example, 240°C) corresponding to a case in which the liquid level in the liquid supply member (for example, the wick) is below a minimum level due to the consumption of liquid.

[174] The aerosol generating device 10 may determine in step S810 that the liquid substance for generating the aerosol is consumed if the temperature of the first heater 210 exceeds the second temperature. In this case, the aerosol generating device 10 may interrupt the power supply to the first heater 210 as a response to the consumption of the substance for generating the aerosol. Meanwhile, the aerosol generating device 10 may continue to block the power supply to the first heater 210 until the cartridge 200 is replaced. For example, the aerosol generating device 10 may interrupt the power supply to the first heater 210 despite the fact that the puff sensor 155 detects a puff.

[175] As shown in FIG. 8B, when the temperature of the first heater 210 is less than the first temperature in the first pre-heating period, the aerosol generating device 10 may determine in step S811 whether a puff is detected by the puff sensor 155. In this case, the aerosol generating device 10 may supply pre-heating power to the first heater 210 before a puff is detected.

[176] The aerosol generating device 10 may heat the first heater 210 in step S812 based on the detection of the puff. For example, the aerosol generating device 10 may supply a first heating power to the first heater 210. In this case, the first heating power supplied to the first heater 210 during the heating period may exceed the recognized power.

[177] The aerosol generating device 10 may determine in step S813 whether to stop heating the first heater 210. The aerosol generating device 10 may stop heating the first heater 210 when the puff is completed. In this case, the aerosol generating device 10 may supply a pre-heating power to the first heater 210 in a first pre-heating period based on the end of the puff. In addition, the aerosol generating device 10 may repeatedly determine whether the temperature of the first heater 210 corresponding to the supply of the recognized power in the first pre-heating period exceeds the first temperature.

[178] As shown in FIG. 8C, in step S814, the aerosol generating device 10 may determine whether the temperature of the first heater 210 is higher than the first temperature, based on the fact that the temperature of the first heater 210 corresponding to the supply of the recognized power in the second preheating period is equal to or less than the predetermined second temperature.

[179] The aerosol generating device 10 may, in step S815, increase the power supplied to the first heater 210 in the heating period in which the first heater 210 is heated, if the temperature of the first heater 210 is less than or equal to the first temperature. For example, the aerosol generating device 10 may increase the power level supplied to the first heater 210 from the second heating power to the first heating power in the heating period, if the temperature of the first heater 210 is less than or equal to the first temperature.

[180] The aerosol generating device 10 in step S816 may maintain the power supplied to the first heater 210 in the heating period in which the first heater 210 is heated, if the temperature of the first heater 210 exceeds the first temperature. For example, the aerosol generating device 10 may maintain the power level supplied to the first heater 210 as the first heating power in the heating section, if the temperature of the first heater 210 exceeds the first temperature.

[181] As shown in FIGS. 9 and 10, the preheating power P0 may be supplied to the first heater 210 until the time t1 in the first preheating period. In this case, while the preheating power P0 is supplied to the first heater 210, the temperature of the first heater 210 may be maintained at the set temperature T0 in the preheating period.

[182] Meanwhile, the recognized power P1 may be supplied to the first heater 210 in the period t1-t2. t1 may be a moment at which a predetermined time has elapsed from the beginning of the first preheating period. At this time, based on the temperature of the first heater 210 corresponding to the supply of the recognized power P1 and less than the first temperature T1, the aerosol generating device 10 may determine that the liquid supply member (for example, the wick) contains a certain or higher liquid level. In addition, the preheating power P0 may be continuously supplied to the first heater 210 even after the moment t2.

[183] The first heating power P2 may be supplied to the first heater 210 based on the detection of a puff at time t3. In this case, the aerosol may be generated by supplying the first heating power P2 to the first heater 210.

[184] Meanwhile, at the time t4, when the puff is completed, the preheating power P0 may be supplied to the first heater 210. In this case, if the temperature of the first heater 210 corresponding to the supply of the recognized power P1 in the previous preheating period is equal to or less than the first temperature T1, the first preheating period may be started again from the time t4.

[185] The recognized power P1 may be supplied to the first heater 210 in the period from t5 to t6. t5 may be a moment at which a predetermined time has elapsed from the moment t4. In this case, if the temperature of the first heater 210 corresponding to the supply of the recognized power P1 exceeds the first temperature T1, the aerosol generating device 10 may determine that the liquid content in the liquid supply member (for example, the wick) is below a certain level. In addition, the aerosol generating device 10 may interrupt the supply of the preheating power P0 to the first heater 210 if the temperature of the first heater 210 exceeds the first temperature T1.

[186] A second heating power, less than the first heating power P2, may be supplied to the first heater 210 based on the detection of a puff at the time t7. In this case, the second heating power may exceed the recognized power P1. In addition, the preheating power P0 may be supplied to the first heater 210 starting from the time t8 upon completion of the puff. In this case, if the temperature of the first heater 210 corresponding to the supply of the recognized power P1 in the previous preheating period exceeds the first temperature T1, the second preheating period may be started at the time t8.

[187] The recognized power P1 may be supplied to the first heater 210 in the period from t9 to t10. t9 may be the moment at which a predetermined time has elapsed from the moment t8. In this case, if the temperature of the first heater 210 corresponding to the supply of the recognized power P1 is less than the second temperature T2, the aerosol generating device 10 may determine that the liquid substance for generating the aerosol has not been consumed. In addition, the preheating power P0 may be continuously supplied to the first heater 210 even after the moment t10.

[188] As shown in FIGS. 11 and 12, the preheating power P0 may be supplied to the first heater 210 until the time t1 in the first preheating period. In this case, while the preheating power P0 is supplied to the first heater 210, the temperature of the first heater 210 may be maintained at the set temperature T0 in the preheating period.

[189] Meanwhile, the recognized power P1 may be supplied to the first heater 210 in the period t1-t2. t1 may be a moment at which a predetermined time has elapsed from the beginning of the first preheating period. In this case, if the temperature of the first heater 210 corresponding to the supply of the recognized power P1 exceeds the first temperature T1, the aerosol generating device 10 may determine that the liquid content in the liquid supply member (for example, the wick) is below a certain level. In addition, the aerosol generating device 10 may interrupt the supply of the preheating power P0 to the first heater 210 if the temperature of the first heater 210 exceeds the first temperature T1.

[190] A second heating power, less than the first heating power P2, may be supplied to the first heater 210 based on the detection of a puff at time t3. In addition, at time t4, upon completion of the puff, a preheating power P0 may be supplied to the first heater 210. In this case, if the temperature of the first heater 210 corresponding to the supply of the recognized power P1 in the previous preheating period exceeds the first temperature T1, the second preheating period may be started at time t4.

[191] The recognized power P1 may be supplied to the first heater 210 in the period from t5 to t6. t5 may be a moment at which a predetermined time has elapsed from the moment t4. In this case, if the temperature of the first heater 210 corresponding to the supply of the recognized power P1 exceeds the second temperature T2, the aerosol generating device 10 may determine that the liquid substance for generating the aerosol is used up.

[192] The aerosol generating device 10 may interrupt the power supply to the first heater 210 from time t6 in response to the consumption of the liquid substance for generating the aerosol.

[193] In one embodiment of the invention, a message about the consumption of the liquid aerosol generating substance may be displayed to the user when the liquid aerosol generating substance is consumed. For example, the aerosol generating device 10 may display a window on the display corresponding to the consumption of the aerosol generating substance. For example, the aerosol generating device 10 may emit a light signal corresponding to the consumption of the aerosol generating substance by means of a light emitting diode (LED). For example, the aerosol generating device 10 may generate a vibration corresponding to the release of the aerosol generating substance by means of a motor.

[194] As shown in FIG. 13, in one embodiment of the present invention, an insertion space into which the stick 20 is inserted may be defined at the upper end of the housing 101 of the aerosol generating device 10.

[195] The insertion space may be pressed to a predetermined depth toward the inside of the housing 101 so that the stick 20 at least partially enters it. The depth of the insertion space may correspond to the length of the portion of the stick 20 containing the substance for generating an aerosol. For example, if the stick 20 shown in FIG. 5 can be used in the device 10 for generating an aerosol, the depth of the insertion space may correspond to the length of the tobacco rod 21 of the stick 20.

[196] Components such as the battery 16, the printed circuit board 1310 and the heater may be located in the housing 101 of the aerosol generating device 10.

[197] The components included in the aerosol generating device 10 can be mounted on one and/or an opposite surface of the printed circuit board 1310. The components mounted on the printed circuit board 1310 can transmit or receive signals through an interconnection layer of the printed circuit board 1310. At least one data exchange module included in the data exchange interface 11, at least one sensor included in the sensor module 15, the controller 17, and the like can be mounted on the printed circuit board 1310.

[198] The printed circuit board 1310 may be located near the battery 16. For example, the printed circuit board 1310 may be located such that one surface thereof faces the battery 16.

[199] Display 1320 may be located on one side of housing 101. Display 1320 may display a window in response to a signal transmitted from controller 17.

[200] The power terminal 1330 may be located on one side of the housing 101 of the aerosol generating device 10. The power terminal 1330 may be a wire terminal for wired communication, such as USB.

[201] The power supply circuit may be located between the battery 16 and the power supply terminal 1330. The power supply circuit may transmit power from the outside to the battery 16 through the power supply terminal 1330. The power supply line 1335 for supplying power may be connected to the power supply terminal 1330. For example, the power supply terminal 1330 may be connected to a connector of the power supply line 1335. The controller 17 may determine whether the power supply line 1335 is connected to the power supply terminal 1330. For example, the controller 17 may determine whether the power supply line 1335 is connected to the power supply terminal 1330 based on a signal generated in response to the connection of the power supply terminal 1330 to the power supply line 1335.

[202] A motor 1340 that generates vibration to create a tactile effect may be located in the housing 101. The motor 1340 may adjust the period and/or intensity of the vibration based on a signal transmitted from the controller 17.

[203] The structure of the aerosol generating device 10 is not limited to the structure shown in FIG. 13. In some embodiments of the invention, the arrangement of the battery 16, the printed circuit board 1310, the display 1320, the power terminal 1330, the motor 1340, and the like may be varied.

[204] In one embodiment of the invention, if a second heater 115 is present for heating the stick 20, the aerosol generating device 10 may begin the aerosol generating step upon insertion of the stick 20. The second heater 115 may be referred to as the stick heater 115. For example, the aerosol generating device 10 may preheat the second heater 115 if insertion of the stick 20 into the insertion space 130 is detected. For example, the aerosol generating device 10 may supply preheating power to the first heater 210 upon completion of preheating of the second heater 115.

[205] In one embodiment of the invention, the aerosol generating device 10 may determine the resistance of the first heater 210 based on the start of the aerosol generating step. Here, the detected resistance of the first heater 210 may be determined as the resistance of the first heater 210 at a reference temperature used in the formula for calculating the temperature of the first heater 210. Meanwhile, the reference temperature used in the formula for calculating the temperature of the first heater 210 may correspond to the gas temperature detected by the temperature sensor 153 based on the start of the aerosol generating step. That is, the resistance of the first heater 210 and the gas temperature determined before the start of supplying power to the first heater 210 after the start of the aerosol generating step may be used in the formula for calculating the temperature of the first heater 210.

[206] Meanwhile, when the user uses a plurality of sticks 20 in succession, the stick 20 may be reinserted into the insertion space 130 before the first heater 210 is cooled sufficiently. In addition, if the aerosol generating device 10 is stored at a low temperature, the temperature of the first heater 210 at the time when the stick 20 is inserted into the insertion space 130 may be relatively low even if the user uses the aerosol generating device 10 at room temperature. In such cases, it may be necessary to accurately determine the reference temperature used in the formula for calculating the temperature of the first heater 210 and/or the resistance of the first heater 210 at the reference temperature.

[207] In one embodiment of the invention, if the aerosol generating device 10 comprises a second heater 115 for heating the stick 20, then based on the power supply to the second heater 115, a reference temperature used in the formula for calculating the temperature of the first heater 210 and/or the resistance of the first heater 210 at the reference temperature can be determined.

[208] As shown in FIG. 14, the aerosol generating device 10 may perform a step of preheating the second heater 115 in a period t0 - t1. t0 may be the moment of recognizing the insertion of the stick 20 into the insertion space 130, and t1 may correspond to a predetermined value Tpre of the temperature of the second heater 115. In this case, after the period t0-t1 has elapsed, the temperature of the second heater 210 may change to a temperature corresponding to the temperature of the environment in which the user uses the aerosol generating device 10. Taking this point into account, the aerosol generating device 10 can determine the gas temperature detected by the temperature sensor 153 at the time t2, after a predetermined time has passed since the start of the preheating step of the second heater 115, as the reference temperature used in the calculation formula of the temperature of the first heater 210. In addition, the aerosol generating device 10 can determine the resistance of the second heater 115 detected at the time t2, after a predetermined time has passed since the start of the preheating step of the second heater 115, as the resistance of the first heater 210 at the reference temperature. In this case, the predetermined time corresponding to t1 can be set after the completion of the preheating step of the second heater 115. For example, t2 can be set 2 seconds earlier than t1.

[209] As described above, in at least one embodiment of the present invention, it may be determined whether the liquid substance for generating an aerosol is smoothly supplied to the liquid supply element based on the temperature of the heater 210 during the preheating period.

[210] In addition, in at least one embodiment of the present invention, it is possible to smoothly supply a liquid substance for generating an aerosol to the liquid supply element if there is no liquid substance for generating an aerosol in the liquid supply element.

[211] In addition, in at least one embodiment of the present invention, the consumption of the liquid substance for generating the aerosol can be accurately determined based on the temperature of the heater 210 during the preheating period.

[212] As shown in FIG. 1-14, the aerosol generating device 10 according to one aspect of the present invention may comprise a chamber 220 configured to store a liquid, a heater 210 configured to heat the liquid, a resistance recognition sensor configured to supply a signal corresponding to the resistance of the heater 210, and a controller 17 configured to calculate a temperature of the heater 210 based on the resistance of the heater 210. The controller 17 may determine whether the temperature of the heater 210 exceeds a first temperature in response to supplying a recognized power to the heater 210 in a first preheating period, control such that the first power is supplied to the heater 210 in the heating period after the first preheating period if the temperature of the heater 210 is equal to or less than the first temperature, control such that a second power, which is less than the first power, is supplied to the heater 210 in the heating period if the temperature of the heater 210 exceeds the first temperature, determine whether the temperature of the heater 210 exceeds the second a temperature exceeding the first temperature in response to supplying the detected power to the heater 210 in a second preheating period after the heating period, if the temperature of the heater 210 exceeds the first temperature, and determining the fact of consumption of the liquid if the temperature of the heater 210 exceeds the second temperature.

[213] Furthermore, in another aspect of the present invention, the heating period may be started upon completion of the first pre-heating period, and the second pre-heating period may be started upon completion of the heating period.

[214] In addition, in another aspect of the present invention, the controller 17 may control such that a preheating power of less than a recognized power is supplied to the heater 210 based on the start of the first preheating period, and also control such that the recognized power is supplied to the heater 210 after a predetermined time has elapsed from the start of the first preheating period.

[215] Furthermore, in another aspect of the present invention, the time during which the recognized power can be supplied to the heater 210 is less than a predetermined time.

[216] Furthermore, in another aspect of the present invention, the controller 17 may interrupt the supply of power to the heater 210 before the completion of the first preheating period if the temperature of the heater 210 exceeds the first temperature.

[217] Furthermore, in another aspect of the present invention, the detected power may be less than the heating power supplied to the heater 210 during the heating period.

[218] In addition, in another aspect of the present invention, the aerosol generating device 10 may further comprise a body 101 comprising an insertion space 130 and a stick heater 115 configured to heat a stick inserted into the insertion space 130. The controller 17 may start supplying power to the stick heater 115 based on insertion of the stick into the insertion space 130, and calculate a temperature of the heater 210 based on the resistance of the heater 210 detected at a certain point in time, after a predetermined time has elapsed after the start of supplying power to the stick heater 115.

[219] Furthermore, in another aspect of the present invention, the aerosol generating device 10 may further comprise a temperature sensor 153 configured to detect a temperature of gas entering the housing 101. The controller 17 may calculate a temperature of the heater 210 based on the gas temperature detected at a certain point in time and the resistance of the heater 210.

[220] Furthermore, in another aspect of the present invention, the controller 17 may control a first heating power corresponding to a first power supplied to the heater 210 in a heating period if the temperature of the heater 210 is equal to or less than a first temperature, and control a second heating power corresponding to a second power supplied to the heater 210 in a heating period if the temperature of the heater 210 exceeds the first temperature. The first heating power may exceed the second heating power.

[221] In addition, in another aspect of the present invention, the aerosol generating device 10 may further comprise a motor 1340 configured to generate vibration. The controller 17 may control the motor 1340 to generate vibration corresponding to the discharge of liquid based on the determination of the discharge of liquid.

[222] Some embodiments or other embodiments of the invention described above are not mutually exclusive or different from each other. Any or all elements of the embodiments of the invention described above may be combined with others or combined with each other in configuration or function.

[223] For example, the configuration "A" described in one embodiment of the invention and the drawings and the configuration "B" described in another embodiment of the invention and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible, except for the case where it is described that the combination is impossible.

[224] Although embodiments of the invention have been described with reference to a number of illustrative embodiments of the invention, it should be understood that those skilled in the art can develop many other modifications and embodiments of the invention that will fall within the scope of the principles of the present invention. In particular, various variations and changes in the components and/or arrangements of the contemplated combined device are possible within the scope of the description, drawings and appended claims. In addition to variations and changes in the components and/or arrangements, alternative uses will also be apparent to those skilled in the art.

Claims (14)

1. An aerosol generating device comprising a chamber configured to store a liquid; a heater configured to heat the liquid; a resistance recognition sensor configured to output an output signal corresponding to the resistance of the heater; a controller configured to calculate a temperature of the heater based on the resistance of the heater, determine whether the temperature of the heater exceeds a first temperature based on supplying the recognized power to the heater in a first preheating period, supply the first power to the heater during the heating period after the first preheating period if the temperature of the heater is equal to or less than the first temperature, supply a second power to the heater, less than the first power, during the heating period if the temperature of the heater exceeds the first temperature, determine whether the temperature of the heater exceeds a second temperature greater than the first temperature based on supplying the recognized power to the heater during the second preheating period after the completion of the heating period if the temperature of the heater exceeds the first temperature; and determine the fact of consumption of the liquid if the temperature of the heater exceeds the second temperature. 2. The aerosol generating device of claim 1, wherein the heating period begins upon completion of the first pre-heating period, and wherein the second pre-heating period begins upon completion of the heating period. 3. The aerosol generating device according to claim 1, wherein the controller is further configured to reduce the preheating power compared to the recognized power supplied to the heater based on the start of the first preheating period, supplying the recognized power to the heater after a predetermined time has elapsed from the start of the first preheating period. 4. The aerosol generating device according to claim 3, wherein the time of supplying the recognized power to the heater is less than a specified time. 5. The aerosol generating device of claim 1, wherein the controller is further configured to interrupt further supply of the detected power to the heater before completion of the first preheating period if the temperature of the heater exceeds the first temperature. 6. The aerosol generating device according to claim 1, wherein the detected power is less than the heating power supplied to the heater during the heating period. 7. The aerosol generating device according to claim 1, further comprising a housing, the shape of which defines the insertion space, and a stick heater configured to heat the stick located in the insertion space, in which the controller is further configured to start supplying power to the stick heater based on detecting the stick in the insertion space, and calculating the temperature of the heater based on the resistance of the heater detected at a certain point in time after a predetermined time has elapsed from the start of supplying power to the stick heater. 8. The aerosol generating device according to claim 7, further comprising a temperature sensor configured to determine the temperature of the gas entering the housing, in which the controller is further configured to calculate the temperature of the heater based on the gas temperature detected at a certain point in time and the resistance of the heater. 9. The aerosol generating device according to claim 1, wherein the controller is further configured to supply to the heater a first heating power corresponding to the first power during the heating period if the temperature of the heater is equal to or less than the first temperature, supply to the heater a second heating power corresponding to the second power during the heating period if the temperature of the heater exceeds the first temperature, in which the first heating power exceeds the second heating power. 10. The aerosol generating device of claim 1, further comprising a motor configured to generate vibration, wherein the controller is further configured to control the motor to generate vibration corresponding to the release of liquid, based on the determination of the release of liquid. 11. An aerosol generating device comprising a chamber configured to store a liquid substance for generating an aerosol; a heater configured to heat the liquid substance for generating an aerosol; a resistance recognition sensor configured to output an output signal corresponding to the resistance of the heater; a controller configured to: calculate a temperature of the heater based on the resistance of the heater, determine whether the temperature of the heater exceeds a first temperature based on supplying a recognized power to the heater in a first preheating period; supply the first power to the heater during the heating period after the first preheating period if the temperature of the heater is equal to or less than the first temperature, supply a second power to the heater, less than the first power, during the heating period if the temperature of the heater exceeds the first temperature, determine whether the temperature of the heater exceeds a second temperature greater than the first temperature based on supplying the recognized power to the heater during the second preheating period after the completion of the heating period if the temperature of the heater exceeds the first temperature; and determine the fact of consumption of the liquid substance for generating an aerosol if the temperature of the heater exceeds the second temperature. 12. The aerosol generating device according to claim 11, further comprising a housing, the shape of which defines the insertion space, a stick heater configured to heat the stick located in the insertion space, in which the controller is further configured to begin supplying power to the stick heater after the stick is placed in the insertion space, calculating the temperature of the heater based on the resistance of the heater detected after a predetermined time has elapsed from the start of supplying power to the stick heater. 13. The aerosol generating device according to claim 12, further comprising a temperature sensor configured to determine the temperature of the gas entering the housing, in which the controller is further configured to calculate the temperature of the heater based on the temperature of the gas and the resistance of the heater. 14. The aerosol generating device according to claim 11, wherein the controller is further configured to supply to the heater a first heating power corresponding to the first power during the heating period if the temperature of the heater is equal to or less than the first temperature, supply to the heater a second heating power corresponding to the second power during the heating period if the temperature of the heater exceeds the first temperature, in which the first heating power exceeds the second heating power.