KR102777324B1 - Aerosol generating device - Google Patents

Abstract

An aerosol generating device is disclosed. The aerosol generating device of the present disclosure includes: a first chamber storing a liquid aerosol generating substance; an insertion space having an elongated space formed therein; a second chamber communicating with the insertion space; a heater positioned within the second chamber and configured to heat the liquid aerosol generating substance to generate an aerosol; an aerosol detection sensor disposed toward the interior of the second chamber; and a control unit; wherein the control unit can calculate an amount of aerosol within the second chamber based on a detection signal received from the aerosol detection sensor, and determine whether the liquid aerosol generating substance is exhausted based on the calculated amount of aerosol.

Description

Aerosol generating device {AEROSOL GENERATING DEVICE}

The present disclosure relates to an aerosol generating device.

An aerosol generating device is intended to extract a certain component from a medium or substance through an aerosol. The medium may contain substances of various components. The substances contained in the medium may be flavoring substances of various components. For example, the substances contained in the medium may contain nicotine components, herbal components, and/or coffee components. Recently, much research has been conducted on such aerosol generating devices.

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

Another purpose may be to provide an aerosol generating device capable of accurately determining whether the aerosol generating material is exhausted by detecting the amount of aerosol vaporization through a sensor.

Another object may be to provide an aerosol generating device capable of regulating the power supplied to the heater when the aerosol generating material is exhausted.

Another purpose may be to provide an aerosol generating device that can accurately inform a user of the exhaustion of aerosol generating material and the time to replace the cartridge.

According to one aspect of the present disclosure for achieving the above-described purpose, an aerosol generating device comprises: a first chamber storing a liquid aerosol generating substance; an insertion space having an elongated space formed therein; a second chamber communicating with the insertion space; a heater positioned within the second chamber and configured to heat the liquid aerosol generating substance to generate an aerosol; an aerosol detection sensor disposed toward the interior of the second chamber; and a control unit; wherein the control unit can calculate an amount of aerosol within the second chamber based on a detection signal received from the aerosol detection sensor, and determine whether the liquid aerosol generating substance is exhausted based on the calculated amount of aerosol.

According to at least one embodiment of the present disclosure, the amount of aerosol vaporization can be detected by a sensor to accurately determine whether the aerosol generating material is exhausted.

According to at least one embodiment of the present disclosure, power supplied to the heater can be adjusted when the aerosol generating material is exhausted.

According to at least one embodiment of the present disclosure, it is possible to accurately inform a user of the exhaustion of aerosol generating material and the time of replacement of the cartridge.

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

FIG. 1 is a block diagram of an aerosol generating device according to one embodiment of the present disclosure.
FIGS. 2 and 3 are drawings for reference in the description of an aerosol generating device according to embodiments of the present disclosure.
FIGS. 4 to 6 are drawings for reference in the description of a stick according to embodiments of the present disclosure.
FIG. 7 is a drawing showing the structure of an aerosol generating device according to one embodiment of the present disclosure.
FIGS. 8, 9, and 11 are flowcharts illustrating the operation of an aerosol generating device according to one embodiment of the present disclosure.
FIG. 10 and FIG. 12 are drawings for reference in explaining the operation of an aerosol generating device according to one embodiment of the present disclosure.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components are given the same reference numbers and redundant descriptions thereof will be omitted.

The suffixes "module" and "part" used for components in the following description may be given or used interchangeably only for the convenience of writing the specification. "Module" and "part" do not have distinct meanings or roles in themselves.

In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings. It should be understood that the attached drawings include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components. However, the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, although it should be understood that there may be other components in between. On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

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

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

In one embodiment, the aerosol generating device (10) may be composed of only the main body (100). In this case, the components included in the aerosol generating device (10) may be located in the main body (100). In another embodiment, the aerosol generating device (10) may be composed of a cartridge (200) containing an aerosol generating material and the main body (100). In this case, the components included in the aerosol generating device (10) may be located in at least one of the main body (100) and the cartridge (200).

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

The input/output interface (12) may include an input device that receives a command from a user and/or an output device (122) that outputs information to the user. For example, the input device may include a touch panel, a physical button, a microphone, etc. For example, the output device (122) may include a display device that outputs visual information such as a display or a light emitting diode (LED), an audio device that outputs auditory information such as a speaker or a buzzer, a motor that outputs tactile information such as a haptic effect, etc.

The input/output interface (12) can transmit data corresponding to a command input from a user through an input device to other component(s) of the aerosol generator (10). The input/output interface (12) can output information corresponding to data received from other component(s) of the aerosol generator (10) through an output device (122).

The aerosol generating module (13) can generate an aerosol from an aerosol generating material. Here, the aerosol generating material can mean one material or a combination of two or more materials in various states such as a liquid state, a solid state, and a gel state that can generate an aerosol.

The liquid aerosol generating material may be a liquid comprising a tobacco-containing material including volatile tobacco flavor components according to one embodiment. The liquid aerosol generating material may be a liquid comprising a non-tobacco material according to another embodiment. For example, the liquid aerosol generating material may comprise water, a solvent, nicotine, plant extracts, flavorings, flavoring agents, a vitamin mixture, and the like.

The solid aerosol generating material may include a solid material based on tobacco raw materials such as a leaf sheet, a tobacco stick, or a granule. In addition, the solid aerosol generating material may include a solid material containing a taste modifier, a flavoring agent, or the like. For example, the taste modifier may include calcium carbonate, sodium bicarbonate, calcium oxide, or the like. For example, the flavoring agent may include a natural material such as herbal granules, or silica, zeolite, dextrin, or the like containing a flavoring ingredient.

Additionally, the aerosol generating material may further comprise an aerosol forming agent, such as glycerin or propylene glycol.

The aerosol generating module (13) may include at least one heater.

The aerosol generating module (13) may include an electrical resistive heater. For example, the electrical resistive heater may include at least one electrically conductive track. The electrical resistive heater may be heated by a current flowing through the electrically conductive track. At this time, the aerosol generating material may be heated by the heated electrical resistive heater.

The electrically conductive track may include an electrically resistive material. As an example, the electrically conductive track may be formed of a metallic material. As another example, the electrically conductive track may be formed of a ceramic material, carbon, a metal alloy, or a composite material of a ceramic material and a metal.

The electrical resistive heater may include electrically conductive tracks formed in various shapes. For example, the electrically conductive tracks may be formed in any one of a tubular shape, a plate shape, a needle shape, a rod shape, and a coil shape.

The aerosol generating module (13) may include a heater that uses an induction heating method. For example, the induction heating heater may include an electrically conductive coil. The induction heating heater may generate an alternating magnetic field whose direction changes periodically by controlling a current flowing in the electrically conductive coil. At this time, when the alternating magnetic field is applied to a magnetic body, energy loss may occur in the magnetic body due to eddy current loss and hysteresis loss. In addition, as the lost energy is released as heat energy, an aerosol generating material adjacent to the magnetic body may be heated. Here, an object that generates heat by a magnetic field may be named a susceptor.

Meanwhile, the aerosol generating module (13) can generate an aerosol from an aerosol generating material by generating ultrasonic vibration.

The aerosol generating module (13) may be named a cartomizer, an atomizer, a vaporizer, etc.

When the aerosol generating device (10) is composed of a cartridge (200) containing an aerosol generating material and a main body (100), the aerosol generating module (13) can be located in at least one of the main body (100) and the cartridge (200).

The memory (14) can store programs for each signal processing and control within the control unit (17). The memory (14) can store data processed in the control unit (17) and data to be processed.

For example, the memory (14) can store application programs designed for the purpose of performing various tasks that can be processed by the control unit (17). The memory (14) can selectively provide some of the stored application programs upon request from the control unit (17).

For example, the memory (14) may store the operating time of the aerosol generator (10), the maximum number of puffs, the current number of puffs, the number of times the battery (16) has been charged, the number of times the battery (16) has been discharged, at least one temperature profile, data on the user's inhalation pattern, data on charging/discharging, etc. Here, a puff may mean an inhalation by the user. Inhalation may mean a situation in which the user draws air into the user's oral cavity, nasal cavity, or lungs through the mouth or nose.

For example, the memory (14) may store information on the amount of aerosol generated by atomizing the aerosol product and the detection signal of the aerosol detection sensor in a matched manner. Here, the detection signal of the aerosol detection sensor may be information on the intensity of infrared rays detected by the detection sensor.

Memory (14) may include at least one of volatile memory (e.g., DRAM, SRAM, SDRAM, etc.) or nonvolatile memory (e.g., flash memory, hard disk drive (HDD), solid-state drive (SSD).

The memory (14) may be arranged in at least one of the main body (100) and the cartridge (200). The memory (14) may be arranged in each of the main body (100) and the cartridge (200). For example, the memory of the main body (100) may store information about a configuration arranged inside the main body (100), for example, information about the total capacity of the battery (190). For example, the memory of the main body (100) may store cartridge information received from a cartridge (200) previously or currently coupled with the main body (100), and the memory of the cartridge (200) may store cartridge information including identification information (ID information) of the cartridge, type information of the cartridge, etc.

The sensor module (15) may include at least one sensor.

For example, the sensor module (15) may include a sensor that detects a puff (hereinafter, puff sensor, 151). At this time, the puff sensor (151) may be implemented by a proximity sensor such as an IR sensor, a pressure sensor, a gyro sensor, an acceleration sensor, a magnetic field sensor, etc.

For example, the sensor module (15) may include a sensor (hereinafter, temperature sensor) that detects the temperature of the heater included in the aerosol generating module (13), the temperature of the aerosol generating material, etc.

At this time, the heater included in the aerosol generating module (13) may also function as a temperature sensor. For example, the electrically resistive material of the heater may be a material having a temperature coefficient of resistance (TCR). The sensor module (15) may sense the temperature of the heater by measuring the resistance of the heater, which varies depending on the temperature.

For example, if a stick can be inserted into the main body of the aerosol generating device (10), the sensor module (15) may include a sensor that detects the insertion of the stick (hereinafter, “stick detection sensor”).

For example, when the aerosol generator (10) includes a cartridge (200), the sensor module (15) may include a sensor (hereinafter, cartridge detection sensor) that detects mounting/detaching, position, etc. of the cartridge (200) with respect to the main body (100).

At this time, the stick detection sensor and/or the cartridge detection sensor may be implemented by an inductance-based sensor, a capacitance-type sensor, a resistance sensor, a Hall sensor (hall IC) using the Hall effect, etc. According to one embodiment of the present invention, the cartridge detection sensor may include a connection terminal. The connection terminal is provided in the main body (100) and can be electrically connected to electrodes provided in the cartridge (200) as the cartridge (200) is coupled to the main body (100).

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

For example, the sensor module (15) may include at least one sensor (hereinafter, motion sensor) that detects movement of the main body (100) and/or cartridge (200) of the aerosol generating device (10). At this time, the motion sensor may be implemented by at least one of a gyro sensor and an acceleration sensor. The motion sensor may be placed in at least one of the main body (100) and the cartridge (200).

For example, the sensor module (15) may include a sensor (hereinafter, aerosol detection sensor, 155) that detects aerosol present in the chamber (C2) of the aerosol generating device (10). At this time, the aerosol detection sensor (155) may be implemented by a non-contact sensor such as an IR (Infrared Ray) sensor.

The aerosol detection sensor (155) can emit infrared light toward the chamber (C2), receive reflected light reflected by aerosol or the like present in the chamber (C2), and output a detection signal corresponding to the received reflected light. The aerosol detection sensor (155) can output different detection signals depending on the amount of aerosol present in the chamber (C2).

The battery (16) can supply power used for the operation of the aerosol generator (10) under the control of the control unit (17). The battery (16) can supply power to other components provided in the aerosol generator (10). For example, the battery (16) can supply power to a communication module included in the communication interface (11), an output device included in the input/output interface (12), a heater included in the aerosol generator module (13), etc.

The battery (16) may be a rechargeable battery or a disposable battery. For example, the battery (16) may be a lithium-ion battery or a lithium polymer (Li-Polymer) battery, but is not limited thereto. For example, if the battery (16) is rechargeable, the charge rate (C-rate) of the battery (16) may be 10C, and the discharge rate (C-rate) may be 10C to 20C, but is not limited thereto. In addition, for stable use, the battery (16) may be manufactured so that 80% or more of the total capacity can be secured even when charging/discharging is performed 2000 times.

The aerosol generator (10) may further include a battery protection module (Protection Circuit Module, PCM), which is a circuit for protecting the battery (16). The battery protection module (PCM) may be arranged adjacent to the upper surface of the battery (16). For example, the battery protection module (PCM) may block the electric path to the battery (16) when a short circuit occurs in a circuit connected to the battery (16), when overvoltage is applied to the battery (16), when overcurrent flows to the battery (16), etc., in order to prevent overcharge and overdischarge of the battery (16).

The aerosol generator (10) may further include a charging terminal into which power supplied from the outside is input. For example, the charging terminal may be formed on one side of the main body of the aerosol generator (10). The aerosol generator (10) may charge the battery (16) using the power supplied through the charging terminal. At this time, the charging terminal may be configured as a wired terminal for USB communication, a pogo pin, or the like.

The aerosol generator (10) can also wirelessly receive power supplied from the outside through a communication interface (11). For example, the aerosol generator (10) can wirelessly receive power using an antenna included in a communication module for wireless communication. The aerosol generator (10) can charge a battery (16) using the power supplied wirelessly.

The control unit (17) can control the overall operation of the aerosol generating device (10). The control unit (17) can be connected to each component provided in the aerosol generating device (10). The control unit (17) can control the overall operation of each component by transmitting and/or receiving signals between each component.

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

The control unit (17) can perform any one of the multiple functions of the aerosol generator (10). For example, the control unit (17) can perform any one of the multiple functions of the aerosol generator (10) (e.g., preheating function, heating function, charging function, cleaning function, etc.) according to the status of each component provided in the aerosol generator (10), a user's command received through the input/output interface (12), etc.

The control unit (17) can control the operation of each component provided in the aerosol generating device (10) based on the data stored in the memory (14). For example, the control unit (17) can control a predetermined power to be supplied from the battery (16) to the aerosol generating module (13) for a predetermined period of time based on data on the temperature profile, the user's inhalation pattern, etc. stored in the memory (14).

The control unit (17) can determine whether a puff is present through the puff sensor (151) included in the sensor module (15). For example, the control unit (17) can check temperature changes, flow changes, pressure changes, voltage changes, etc. within the aerosol generating device (10) based on the sensing values of the puff sensor (151). The control unit (17) can determine whether a puff is present based on the results checked based on the sensing values of the puff sensor (151).

The control unit (17) can control the operation of each component provided in the aerosol generating device (10) depending on whether a puff is generated and/or the number of puffs. For example, the control unit (17) can control the temperature of the heater to be changed or maintained based on the temperature profile stored in the memory (14).

The control unit (17) can control power supply to the heater to be cut off according to predetermined conditions. For example, when the stick is removed, when the cartridge (200) is separated, when the number of puffs reaches a preset maximum number of puffs, when no puffs are detected for a preset time or longer, when the remaining capacity of the battery (16) is less than a preset value, etc., the control unit (17) can control power supply to the heater to be cut off.

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

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

For example, the control unit (17) can control a current pulse having a predetermined frequency and duty ratio to be supplied to the heater using the PWM method. At this time, the control unit (17) can control the power supplied to the heater by adjusting the frequency and duty ratio of the current pulse.

For example, the control unit (17) can determine the target temperature that is the target of control based on the temperature profile. At this time, the control unit (17) can control the power supplied to the heater by using the PID method, which is a feedback control method using the difference value between the temperature of the heater and the target temperature, the value obtained by integrating the difference value over time, and the value obtained by differentiating the difference value over time.

For example, the control unit (17) can control the power supplied to the heater based on the temperature profile. The control unit (17) can control the length of the heating section that heats the heater, the amount of power supplied to the heater during the heating section, etc. The control unit (17) can control the power supplied to the heater based on the target temperature of the heater.

Meanwhile, the PWM method and the PID method have been described as examples of control methods for supplying power to the heater, but the present invention is not limited thereto, and various control methods such as the Proportional-Integral (PI) method and the Proportional-Differential (PD) method can be used.

The control unit (17) can determine the temperature of the heater and adjust the power supplied to the heater according to the temperature of the heater. For example, the control unit (17) can determine the temperature of the heater by checking the resistance value of the heater, the current flowing to the heater, and/or the voltage applied to the heater.

Meanwhile, the control unit (17) can control power to be supplied to the heater according to preset conditions. For example, if a cleaning function for cleaning the space into which the stick is inserted is selected according to a command input from the user through the input/output interface (12), the control unit (17) can control power to be supplied to the heater.

FIGS. 2 and 3 are drawings for reference in the description of an aerosol generating device according to embodiments of the present disclosure.

Referring to FIG. 2, an aerosol generating device (10) according to one embodiment may include a main body (100) supporting a cartridge (200) and a cartridge (200) containing an aerosol generating material.

The cartridge (200) may be configured to be detachably attached to the main body (100) according to one embodiment. The cartridge (200) may be configured integrally with the main body (100) according to another embodiment. For example, at least a portion of the cartridge (200) may be inserted into an internal space formed by the housing (101) of the main body (100), so that the cartridge (200) may be mounted on the main body (100).

The main body (100) may be formed in a structure in which external air can flow into the interior of the main body (100) while the cartridge (200) is inserted. At this time, the external air that flows into the main body (100) can pass through the cartridge (200) and flow into the user's mouth.

The control unit (17) can determine whether the cartridge (200) is mounted/removed through the cartridge detection sensor included in the sensor module (15). For example, the cartridge detection sensor can transmit a pulse current through one terminal connected to the cartridge (200). At this time, the cartridge detection sensor can detect whether the cartridge (200) is connected based on whether a pulse current is received through another terminal.

The cartridge (200) may include a heater (210) for heating an aerosol generating material and/or a storage (220) for holding an aerosol generating material. For example, a liquid delivery means impregnated (containing) with an aerosol generating material may be placed inside the storage (220). The electrically conductive track of the heater (210) may be formed in a structure that winds the liquid delivery means. At this time, as the liquid delivery means is heated by the heater (210), an aerosol may be generated. Here, the liquid delivery means may include a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

The cartridge (200) may include an insertion space (230) configured to allow the stick (20) to be inserted. For example, the cartridge (200) may include an insertion space formed by an inner wall (not shown) extending circumferentially along the direction in which the stick (20) is inserted. At this time, the insertion space may be formed by the inner side of the inner wall being open upward and downward. The stick (20) may be inserted into the insertion space (230) formed by the inner wall.

The insertion space into which the stick (20) is inserted can be formed in a shape corresponding to the shape of a portion of the stick (20) inserted into the insertion space. For example, when the stick (20) is formed in a cylindrical shape, the insertion space can be formed in a cylindrical shape.

When the stick (20) is inserted into the insertion space, the outer surface of the stick (20) is surrounded by the inner wall and can come into contact with the inner wall.

The stick (20) may be similar to a typical combustible cigarette. For example, the stick (20) may be divided into a first portion containing an aerosol generating substance and a second portion containing a filter or the like. Alternatively, the second portion of the stick (20) may also contain an aerosol generating substance. For example, an aerosol generating substance in the form of granules or capsules may be inserted into the second portion.

The entire first part may be inserted into the insertion space (230), and the second part may be exposed to the outside. Alternatively, only a part of the first part may be inserted into the insertion space (230), or parts of the first part and the second part may be inserted. The user may inhale the aerosol while holding the second part in his mouth. At this time, the aerosol is generated by external air passing through the first part, and the generated aerosol may be delivered to the user's mouth by passing through the second part.

The user can inhale the aerosol by holding one end of the stick (20) in his mouth. The aerosol generated by the heater (210) can pass through the stick (20) and be delivered to the user's mouth. At this time, while the aerosol passes through the stick (20), a substance contained in the stick (20) can be added to the aerosol, and the aerosol added with the substance can be inhaled into the user's mouth through one end of the stick (20).

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

The control unit (17) can initialize the current number of puffs stored in the memory (14) when the inserted stick (20) is removed.

Referring to FIG. 3, an aerosol generating device (10) according to one embodiment may include a main body (100) that supports a cartridge (200) and a cartridge (200) that holds an aerosol generating material. The main body (100) may be configured such that a stick (20) can be inserted into an insertion space (130).

The aerosol generating device (10) may include a first heater that heats an aerosol generating material stored in a cartridge (200). For example, when a user inhales one end of the stick (20) with his/her mouth, the aerosol generated by the first heater may pass through the stick (20). At this time, while the aerosol passes through the stick (20), a flavor may be added to the aerosol. The flavored aerosol may be inhaled into the user's mouth through one end of the stick (20).

Meanwhile, according to another embodiment, the aerosol generating device (10) may include a first heater for heating an aerosol generating substance stored in a cartridge (200) and a second heater for heating a stick (20) inserted into a main body (100), respectively. For example, the aerosol generating device (10) may generate an aerosol by heating the aerosol generating substance stored in the cartridge (200) and the stick (20), respectively, through the first heater and the second heater.

FIGS. 4 to 6 are drawings that are referenced in the description of a stick according to embodiments of the present disclosure. Detailed descriptions of overlapping contents in FIGS. 4 to 6 will be omitted.

Referring to FIG. 4, a cigarette (20) according to one embodiment may include a tobacco rod (21) and a filter rod (22). The first part described above with reference to FIG. 2 may include the tobacco rod (21). The second part described above with reference to FIG. 2 may include the filter rod (22).

In Fig. 4, the filter rod (22) is illustrated as a single segment, but is not limited thereto. In other words, the filter rod (22) may be composed of a plurality of segments. For example, the filter rod (22) may include a first segment for cooling the aerosol and a second segment for filtering a predetermined component contained in the aerosol. In addition, if necessary, the filter rod (22) may further include at least one segment for performing another function.

The diameter of the stick (20) is within the range of 5 mm to 9 mm, and the length may be about 48 mm, but is not limited thereto. 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 is not limited thereto.

The stick (20) may be wrapped by at least one wrapper (24). The wrapper (24) may have at least one hole formed through which outside air is introduced or internal gas is discharged. As an example, the stick (20) may be wrapped by one wrapper (24). As another example, the stick (20) may be wrapped by two or more wrappers (24) in an overlapping manner. For example, the tobacco rod (21) may be wrapped by the first wrapper (241). For example, the filter rod (22) may be wrapped by the wrappers (242, 243, 244). The tobacco rod (21) and the filter rod (22) wrapped by individual wrappers may be combined. The entire stick (20) may be repackaged by the third wrapper (245). If each filter load (22) is composed of multiple segments, each segment can be wrapped by an individual wrapper (242, 243, 244). The entire stick (20) in which the segments wrapped by the individual wrappers are combined can be repackaged by another wrapper.

The first wrapper (241) and the second wrapper (242) can be made of general filter paper. For example, the first wrapper (241) and the second wrapper (242) can be porous paper or non-porous paper. In addition, the first wrapper (241) and the second wrapper (242) can be made of oil-resistant paper and/or aluminum composite packaging material.

The third wrapper (243) may be made of hard paper. For example, the weight of the third wrapper (243) may be within a range of 88 g/m2 to 96 g/m2. For example, the weight of the third wrapper (243) may be within a range of 90 g/m2 to 94 g/m2. In addition, the thickness of the third wrapper (243) may be within a range of 120 um to 130 um. For example, the thickness of the third wrapper (243) may be 125 um.

The fourth wrapper (244) may be made of a hard paper having a high oil resistance. For example, the weight of the fourth wrapper (244) may be within a range of 88 g/m2 to 96 g/m2. For example, the weight of the fourth wrapper (244) may be within a range of 90 g/m2 to 94 g/m2. In addition, the thickness of the fourth wrapper (244) may be within a range of 120 um to 130 um. For example, the thickness of the fourth wrapper (244) may be 125 um.

The fifth wrapper (245) may be made of sterilized paper (MFW). Here, the sterilized paper (MFW) may mean paper that is specially manufactured to have improved tensile strength, water resistance, smoothness, etc. compared to general paper. For example, the basis weight of the fifth wrapper (245) may be within a range of 57 g/m2 to 63 g/m2. For example, the basis weight of the fifth wrapper (245) may be 60 g/m2. In addition, the thickness of the fifth wrapper (245) may be within a range of 64 um to 70 um. For example, the thickness of the fifth wrapper (245) may be 67 um.

The fifth wrapper (245) may have a predetermined material added thereto. Here, an example of the predetermined material may be silicon, but is not limited thereto. For example, silicon may have properties such as heat resistance that is less affected by temperature, oxidation resistance that does not oxidize, resistance to various chemicals, water repellency, or electrical insulation. However, even if it is not silicon, any material having the above-described properties may be applied or coated on the fifth wrapper (245) without limitation.

The fifth wrapper (245) can prevent the stick (20) from burning. For example, if the tobacco rod (21) is heated by the heater (110), there is a possibility that the stick (20) will burn. Specifically, if the temperature rises above the ignition point of any one of the materials included in the tobacco rod (21), the stick (20) may burn. Even in this case, since the fifth wrapper (245) includes a non-combustible material, the stick (20) can be prevented from burning.

In addition, the fifth wrapper (245) can prevent the main body (100) from being contaminated by substances generated from the stick (20). Liquid substances can be generated within the stick (20) by the user's puff. For example, liquid substances (e.g., moisture, etc.) can be generated by cooling the aerosol generated from the stick (20) by external air. As the fifth wrapper (245) wraps the stick (20), liquid substances generated within the stick (20) can be prevented from leaking out of the stick (20).

The tobacco rod (21) may include an aerosol generating material. For example, the aerosol generating material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. In addition, the tobacco rod (21) may contain other additives such as a flavoring agent, a humectant, and/or an organic acid. In addition, a flavoring liquid such as menthol or a humectant may be added to the tobacco rod (21) by spraying it onto the tobacco rod (21).

The tobacco rod (21) can be manufactured in various ways. For example, the tobacco rod (21) can be manufactured as a sheet. For example, the tobacco rod (21) can be manufactured as a strand. For example, the tobacco rod (21) can be manufactured as a tobacco sheet cut into small pieces. For example, the tobacco rod (21) can be surrounded by a heat-conducting material. For example, the heat-conducting material can be a metal foil such as aluminum foil, but is not limited thereto. For example, the heat-conducting material surrounding the tobacco rod (21) can evenly distribute heat transferred to the tobacco rod (21) to improve the heat conductivity applied to the tobacco rod. This can improve the taste of the tobacco. The heat-conducting material surrounding the tobacco rod (21) can function as a susceptor heated by an induction heater. At this time, although not shown in the drawing, the tobacco rod (21) may further include an additional susceptor in addition to the heat-conducting material surrounding the outside.

The filter rod (22) may be a cellulose acetate filter. Meanwhile, there is no limitation on the shape of the filter rod (22). For example, the filter rod (22) may be a cylindrical rod. For example, the filter rod (22) may be a tube rod having a hollow portion therein. For example, the filter rod (22) may be a recessed rod. When the filter rod (22) is composed of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.

The first segment of the filter rod (22) may be a cellulose acetate filter. For example, the first segment may be a tube-shaped structure having a hollow space therein. When the heater (110) is inserted by the first segment, the phenomenon of the internal material of the tobacco rod (21) being pushed back may be prevented, and a cooling effect of the aerosol may also be generated. The diameter of the hollow space included in the first segment may be adopted as an appropriate diameter within a range of 2 mm to 4.5 mm, but is not limited thereto.

The length of the first segment may be adopted as an appropriate length within the range of 4 mm to 30 mm, but is not limited thereto. For example, the length of the first segment may be 10 mm, but is not limited thereto.

The second segment of the filter rod (22) cools the aerosol generated by the heater (110) heating the tobacco rod (21). Accordingly, the user can inhale the aerosol cooled to an appropriate temperature.

The length or diameter of the second segment can be determined variously depending on the shape of the stick (20). For example, the length of the second segment can be appropriately employed within a range of 7 mm to 20 mm. Preferably, the length of the second segment can be about 14 mm, but is not limited thereto.

The second segment can be made by weaving polymer fibers. In this case, a flavoring agent can be applied to the fibers made of the polymer. Alternatively, a separate fiber to which a flavoring agent has been applied and a fiber made of the polymer can be woven together to make the second segment. Alternatively, the second segment can be formed by a crimped polymer sheet.

For example, the polymer can be made of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminum foil.

As the second segment is formed by a woven polymer fiber or a crimped polymer sheet, the second segment may include a single or multiple channels extending longitudinally. Here, a channel may mean a passage through which a gas (e.g., air or an aerosol) passes.

For example, the second segment comprised of a compressed polymer sheet can be formed from a material having a thickness of between about 5 μm and about 300 μm, for example between about 10 μm and about 250 μm. Furthermore, the total surface area of the second segment can be between about 300 mm2/mm and about 1000 mm2/mm. Additionally, the aerosol-cooling element can be formed from a material having a specific surface area of between about 10 mm2/mg and about 100 mm2/mg.

Meanwhile, the second segment may include a thread containing a volatile flavor component. Here, the volatile flavor component may be, but is not limited to, menthol. For example, the thread may be filled with a sufficient amount of menthol to provide 1.5 mg or more of menthol to the second segment.

The third segment of the filter load (22) may be a cellulose acetate filter. The length of the third segment may be appropriately adopted within a range of 4 mm to 20 mm. For example, the length of the third segment may be about 12 mm, but is not limited thereto.

The filter rod (22) may be manufactured to generate a flavor. As an example, a flavoring agent may be sprayed onto the filter rod (22). As an example, a separate fiber coated with a flavoring agent may be inserted into the interior of the filter rod (22).

In addition, the filter load (22) may include at least one capsule (23). Here, the capsule (23) may perform a function of generating a flavor. The capsule (23) may also perform a function of generating an aerosol. For example, the capsule (23) may have a structure in which a liquid including a flavor is wrapped with a film. The capsule (23) may have a spherical or cylindrical shape, but is not limited thereto.

Referring to FIG. 5, the stick (30) according to one embodiment may further include a shear plug (33). The shear plug (33) is located on one side of the tobacco rod (31) facing the filter rod (32). The shear plug (33) can prevent the tobacco rod (31) from escaping to the outside. The shear plug (33) can prevent liquefied aerosol from the tobacco rod (31) from flowing into the aerosol generating device (10) during smoking.

The filter load (32) may include a first segment (321) and a second segment (322). The first segment (321) may correspond to the first segment of the filter load (22) of Fig. 4. The second segment (322) may correspond to the third segment of the filter load (22) of Fig. 4.

The diameter and total length of the stick (30) may correspond to the diameter and total length of the stick (20) of Fig. 4. For example, the length of the shear plug (33) may be about 7 mm, the length of the tobacco rod (31) may be about 15 mm, the length of the first segment (321) may be about 12 mm, and the length of the second segment (322) may be about 14 mm, but is not limited thereto.

The stick (30) may be wrapped by at least one wrapper (35). The wrapper (35) may have at least one hole formed through which outside air is introduced or internal gas is discharged. For example, the shear plug (33) may be wrapped by the first wrapper (351), the tobacco rod (31) may be wrapped by the second wrapper (352), the first segment (321) may be wrapped by the third wrapper (353), and the second segment (322) may be wrapped by the fourth wrapper (354). Then, the entire stick (30) may be repackaged by the fifth wrapper (355).

In addition, at least one perforation (36) may be formed in the fifth wrapper (355). For example, the perforation (36) may be formed in an area surrounding the tobacco rod (31), but is not limited thereto. For example, the perforation (36) may serve to transfer heat formed by the heater (210) illustrated in FIG. 2 to the interior of the tobacco rod (31).

In addition, the second segment (322) may include at least one capsule (34). Here, the capsule (34) may perform a function of generating a flavor. The capsule (34) may also perform a function of generating an aerosol. For example, the capsule (34) may be a structure in which a liquid including a flavor is wrapped with a film. The capsule (34) may have a spherical or cylindrical shape, but is not limited thereto.

The first wrapper (351) may be a general filter paper combined with a metal foil such as aluminum foil. For example, the overall thickness of the first wrapper (351) may be included in a range of 45 um to 55 um. For example, the overall thickness of the first wrapper (351) may be 50.3 um. In addition, the thickness of the metal foil of the first wrapper (351) may be included in a range of 6 um to 7 um. For example, the thickness of the metal foil of the first wrapper (351) may be 6.3 um. In addition, the basis weight of the first wrapper (351) may be included in a range of 50 g/m2 to 55 g/m2. For example, the basis weight of the first wrapper (351) may be 53 g/m2.

The second wrapper (352) and the third wrapper (353) can be made of general filter paper. For example, the second wrapper (352) and the third wrapper (353) can be porous paper or non-porous paper.

For example, the porosity of the second wrapper (352) may be 35000 CU, but is not limited thereto. In addition, the thickness of the second wrapper (352) may be included in a range of 70 um to 80 um. For example, the thickness of the second wrapper (352) may be 78 um. In addition, the basis weight of the second wrapper (352) may be included in a range of 20 g/m2 to 25 g/m2. For example, the basis weight of the second wrapper (352) may be 23.5 g/m2.

For example, the porosity of the third wrapper (353) may be, but is not limited to, 24000 CU. In addition, the thickness of the third wrapper (353) may be included in a range of 60 um to 70 um. For example, the thickness of the third wrapper (353) may be 68 um. In addition, the basis weight of the third wrapper (353) may be included in a range of 20 g/m2 to 25 g/m2. For example, the basis weight of the third wrapper (353) may be 21 g/m2.

The fourth wrapper (354) may be made of PLA laminate. Here, the PLA laminate may mean three-ply paper including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the fourth wrapper (354) may be included in a range of 100 um to 120 um. For example, the thickness of the fourth wrapper (354) may be 110 um. In addition, the basis weight of the fourth wrapper (354) may be included in a range of 80 g/m2 to 100 g/m2. For example, the basis weight of the fourth wrapper (354) may be 88 g/m2.

The fifth wrapper (355) may be made of sterilized paper (MFW). Here, the sterilized paper (MFW) may mean paper that is specially manufactured to have improved tensile strength, water resistance, smoothness, etc. compared to general paper. For example, the basis weight of the fifth wrapper (355) may be within a range of 57 g/m2 to 63 g/m2. For example, the basis weight of the fifth wrapper (355) may be 60 g/m2. In addition, the thickness of the fifth wrapper (355) may be within a range of 64 um to 70 um. For example, the thickness of the fifth wrapper (355) may be 67 um.

The fifth wrapper (355) may have a predetermined material added thereto. Here, an example of the predetermined material may be silicon, but is not limited thereto. For example, silicon has properties such as heat resistance that is less affected by temperature, oxidation resistance that does not oxidize, resistance to various chemicals, water repellency, or electrical insulation. However, even if it is not silicon, any material having the above-described properties may be applied (or coated) to the fifth wrapper (355) without limitation.

The shear plug (33) can be made of cellulose acetate. For example, the shear plug (33) can be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. The mono denier of the filaments constituting the cellulose acetate tow can be included in a range of 1.0 to 10.0. For example, the mono denier of the filaments constituting the cellulose acetate tow can be included in a range of 4.0 to 6.0. For example, the mono denier of the filaments of the shear plug (33) can be 5.0. In addition, the cross section of the filaments constituting the shear plug (33) can be Y-shaped. The total denier of the shear plug (33) can be included in a range of 20,000 to 30,000. For example, the total denier of the shear plug (33) may be within a range of 25,000 to 30,000. For example, the total denier of the shear plug (33) may be 28,000.

Additionally, if necessary, the shear plug (33) may include at least one channel. The cross-sectional shape of the channel of the shear plug (330) may be manufactured in various ways.

The tobacco rod (31) may correspond to the tobacco rod (21) described above with reference to Fig. 4. Therefore, a detailed description of the tobacco rod (31) will be omitted below.

The first segment (321) can be made of cellulose acetate. For example, the first segment can be a tube-shaped structure including a hollow space therein. The first segment (321) can be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. For example, the mono denier and total denier of the first segment (321) can be the same as the mono denier and total denier of the shear plug (33).

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

Referring to FIG. 6, the stick (40) may include a medium portion (410). The stick (40) may include a cooling portion (420). The stick (40) may include a filter portion (430). The cooling portion (420) may be arranged between the medium portion (410) and the filter portion (430). The stick (40) may include a wrapper (440). The wrapper (440) may wrap the medium portion (410). The wrapper (440) may wrap the cooling portion (420). The wrapper (440) may wrap the filter portion (430). The stick (40) may have a cylindrical shape.

The medium portion (410) may include a medium (411). The medium portion (410) may include a first medium cover (413). The medium portion (410) may include a second medium cover (415). The medium (411) may be arranged between the first medium cover (413) and the second medium cover (415). The first medium cover (413) may be arranged at one end of the stick (40). The length of the medium portion (410) may be 24 mm.

The medium (411) may include a variety of ingredients. The materials included in the medium may be flavoring materials of various ingredients. The medium (411) may be composed of a plurality of granules. Each of the plurality of granules may have a size of 0.4 mm to 1.12 mm. The medium (411) may be filled with granules to about 70% of its interior. The length (L2) of the medium (411) may be 10 mm. The first medium cover (413) may be composed of an acetate material. The second medium cover (415) may be composed of an acetate material. The first medium cover (413) may be composed of a paper material. The second medium cover (415) may be composed of a paper material. At least one of the first medium cover (413) and the second medium cover (415) may be made of paper material and may be folded into a wrinkled shape to form a plurality of gaps therebetween for air to flow. The gaps may be smaller than the size of each granule of the medium (411). The length (L1) of the first medium cover (413) may be shorter than the length (L2) of the medium (411). The length (L3) of the second medium cover (413) may be shorter than the length (L2) of the medium (411). The length (L1) of the first medium cover (413) may be 7 mm. The length (L2) of the second medium cover (413) may be 7 mm.

Accordingly, each granule of the medium (411) may not be separated from the medium portion (410) and the stick (40).

The cooling unit (420) may have a cylindrical shape. The cooling unit (420) may have a hollow shape. The cooling unit (420) may be arranged between the medium unit (410) and the filter unit (430). The cooling unit (420) may be arranged between the second medium cover (415) and the filter unit (430). The cooling unit (420) may be formed in a tube shape surrounding the cooling pass (424) inside. The cooling unit (420) may be thicker than the wrapper (440). The cooling unit (420) may be made of a paper material that is thicker than the wrapper (440). The length (L4) of the cooling unit (420) may be the same as or similar to the length (L2) of the medium (411). The length (L4) of the cooling unit (420) and the cooling pass (424) may be 10 mm. When the stick (40) is inserted into the interior of the aerosol generator (10), at least a portion of the cooling unit (420) may be exposed to the outside of the aerosol generator (10).

Accordingly, the cooling unit (420) can support the medium unit (410) and the filter unit (430) and secure the rigidity of the stick (40). In addition, the cooling unit (420) can support the wrapper (440) between the medium unit (410) and the filter unit (430) and secure a portion to which the wrapper (440) can be adhered. In addition, the heated air and aerosol can be cooled while passing through the cooling pass (424) inside the cooling unit (420).

The filter part (430) may be composed of an acetate material filter. The filter part (430) may be placed at the other end of the stick (40). When the stick (40) is inserted into the interior of the aerosol generating device (10), the filter part (430) may be exposed to the outside of the aerosol generating device (10). The user may hold the filter part (430) in his/her mouth and inhale air. The length (L5) of the filter part (430) may be 14 mm.

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

Accordingly, the wrapper (440) can fix the medium section (410), the cooling section (420), and the filter section (430) and prevent them from being separated from the stick (40).

The first thin film (443) may be placed at a position corresponding to the first medium cover (413). The first thin film (443) may be placed between the wrapper (440) and the first medium cover (413), or may be placed on the outside of the wrapper (440). The first thin film (443) may surround the first medium cover (413). The first thin film (443) may be made of a metal material. The first thin film (443) may be made of an aluminum material. The first thin film (443) may be in close contact with or coated on the wrapper (440).

The second thin film (445) may be placed at a position corresponding to the second medium cover (415). The second thin film (445) may be placed between the wrapper (440) and the second medium cover (415), or may be placed on the outside of the wrapper (440). The second thin film (445) may be made of a metal material. The second thin film (445) may be made of an aluminum material. The second thin film (445) may be in close contact with or coated on the wrapper (440).

FIG. 7 is a drawing showing the structure of an aerosol generating device according to one embodiment of the present disclosure.

Throughout this specification, “upstream” and “downstream” may be determined based on the direction of airflow in which the generated aerosol flows so as to be inhaled into the user’s mouth or lungs when the user inhales using the stick. For example, in FIGS. 4 and 5 , since the aerosol generated from the tobacco rod (21, 31) is directed toward the filter rod (22, 32), the tobacco rod (21, 31) is located upstream of the filter rod (22, 32), and the filter rod (22, 32) is located downstream of the tobacco rod (21, 31). “Upstream” and “downstream” may be determined relatively between components.

Throughout this specification, the direction of the aerosol generator (10) can be defined based on the orthogonal coordinate system. In the orthogonal coordinate system, the x-axis direction can be defined as the left-right direction of the aerosol generator (10). At this time, with respect to the origin, the direction toward +x can mean the right direction, and the direction toward -x can mean the left direction. The y-axis direction can be defined as the up-down direction of the aerosol generator (10). At this time, with respect to the origin, the direction toward +y can mean the upward direction, and the direction toward -y can mean the downward direction. The z-axis direction can be defined as the front-back direction of the aerosol generator (10). With respect to the origin, the direction toward +z can mean the forward direction, and the direction toward -z can mean the rearward direction.

Referring to FIG. 7, the aerosol generating device (10) may include a main body (100) and a cartridge (200). The aerosol generating device (10) may include a heater (210), a puff sensor (151), an aerosol detection sensor (155), a battery (16), and/or a control unit (17).

The cartridge (200) may be detachable from the main body (100). A first chamber (C1) may be formed inside the cartridge (200).

The cartridge (200) may include an outer wall and an inner wall. The first chamber (C1) may be configured by a space between the outer wall and the inner wall. The first chamber (C1) may store a liquid aerosol generating substance (A1) therein. The liquid aerosol generating substance (A1) within the first chamber (C1) may be heated by a heater (210).

A second chamber (C2) may be formed in the cartridge (200). The second chamber (C2) may be located at the bottom of the first chamber (C1). A heater (210) and a wick (not shown) may be installed in the second chamber (C2). The second chamber (C2) may be in communication with the insertion space (230).

The wick may be connected to the first chamber (C1). The wick may be supplied with a liquid aerosol generating substance (A1) stored in the first chamber (C1). The liquid aerosol generating substance (A1) stored in the first chamber (C1) may be impregnated into the wick. When the wick is heated by the heater (210), an aerosol (A2) may be generated in the second chamber (C2). External air may be introduced into the second chamber (C2) through a chamber inlet formed on one side of the second chamber (C2). The air introduced into the second chamber (C2) may flow inside the second chamber (C2) along with the aerosol (A2) generated in the second chamber (C2) and may move to the insertion space (230).

The heater (210) can be electrically connected to the battery (16) and/or the control unit (17). The heater (210) is installed in the second chamber (C2), is positioned adjacent to the first chamber (C1), and can heat a wick impregnated with a liquid aerosol generating substance (A1) in the first chamber (C1). The heater (210) can heat the liquid aerosol generating substance (A1) in the wick.

The cartridge (200) may have an insertion space (230). One end of the insertion space (230) may be opened to form an opening. The insertion space (230) may be exposed to the outside through the opening. The opening may be defined as one end of the insertion space (230). The insertion space (230) may be formed to be elongated in the vertical direction. The insertion space (230) may be configured as a space surrounded by an inner wall formed to be elongated in the vertical direction. The stick (40) may be inserted into the insertion space (230).

The cartridge (200) may be positioned so as to be in contact with the main body (100). The cartridge (200) may be coupled to the main body (100) or separated from the main body (100). One side wall of the outer wall of the cartridge (200) may be in contact with the main body (100). The insertion space (230) may be formed adjacent to one side wall of the outer wall of the cartridge (200) that is in contact with the main body (100).

The aerosol detection sensor (155) may be positioned adjacent to the second chamber (C2) when the cartridge (200) is coupled to the main body (100). The aerosol detection sensor (155) may be positioned so as to face the inside of the second chamber (C2). The aerosol detection sensor (155) may be positioned toward the space between the heater (210) and the insertion space (230) inside the second chamber (2).

The aerosol detection sensor (155) may include a light emitting unit (1551) and a light receiving unit (1552). The light emitting unit (1551) may include at least one light source that generates light. For example, the light emitting unit (1551) may include a light emitting diode (LED) that emits infrared rays having a wavelength of 780 nm to 1000 nm as a light source. At this time, a plurality of light sources included in the light emitting unit (1551) may be arranged and placed in a certain pattern.

The light emitting unit (1551) can irradiate light in a preset direction. For example, the light emitting unit (1551) can include a first light collecting unit (not shown) that collects light generated from a light source toward an object. Here, the first light collecting unit can be composed of a focusing lens, a diffractive optical element (DOE), etc.

The light receiving unit (1552) may include a photo diode that reacts to light. The light receiving unit (1552) may output an electrical signal corresponding to light incident on the photo diode. For example, the light receiving unit (1552) may include a photo diode that receives infrared rays having a wavelength of 780 nm to 1000 nm. The light receiving unit (1552) may be an IR sensor.

The light receiving unit (1552) may include a second light collecting unit (not shown) that collects light reflected or scattered from an object. For example, light collected by the second light collecting unit may be transmitted to a photodiode included in the light receiving unit (1552). At this time, the second light collecting unit may include a lens that receives light incident from a predetermined direction.

The light receiving unit (1552) may further include an optical filter (not shown) that restrictively transmits light of a specific wavelength range. For example, the optical filter may be an infrared band pass filter that restrictively transmits infrared rays having a wavelength of 780 nm to 1000 nm.

The light emitting unit (1551) can emit light toward the inside of the second chamber (C2). The light receiving unit (1552) can receive light reflected or scattered by an object. For example, the light receiving unit (1552) can receive light reflected or scattered by an aerosol (A2) flowing within the second chamber (C2). The light receiving unit (1552) can output a detection signal corresponding to the received light. The light receiving unit (1552) can output an electrical signal corresponding to the amount of light incident on the photodiode.

Referring to FIG. 7, the light emitting unit (1551) and the light receiving unit (1552) may be positioned spaced apart from each other. However, the positions of the light emitting unit (1551) and the light receiving unit (1552) are not limited thereto, and the light emitting unit (1551) and the light receiving unit (1552) may be configured as an integral device without being spaced apart from each other.

At least a portion of the light irradiated toward the inside of the second chamber (C2) may be reflected or scattered by the aerosol (A2) inside the second chamber (C2). At this time, the amount of light incident on the light receiving unit (1552) may vary depending on the amount of the aerosol (A2) inside the second chamber (C2).

The aerosol detection sensor (155) can output an electrical signal corresponding to the amount of light incident on the light receiving unit (1552) to an external component (e.g., a control unit (17)). The aerosol detection sensor (155) can also detect a change in the amount of light incident on the light receiving unit (1552) and output an electrical signal corresponding to the detection result to an external component (e.g., a control unit (17)).

The second chamber (C2) may be formed of a transparent material. At least a portion of the walls forming the second chamber (C2) may be formed of a transparent material. For example, among the inner surfaces of the second chamber (C2), the inner surface that can be reached by infrared light emitted from the light-emitting portion (1551) of the aerosol detection sensor (155) may be formed of a transparent material. For example, the second chamber (C2) may be formed of a material such as glass or transparent plastic.

The second chamber (C2) may have an infrared absorbing material applied thereon. For example, an infrared absorbing material may be applied on an inner surface of the second chamber (C2) where infrared light emitted from the light emitting portion (1551) of the aerosol detection sensor (155) can reach. Here, the infrared absorbing material may exhibit a peak absorption wavelength in a wavelength range of about 780 nm to 1000 nm. For example, the infrared absorbing material may include a copper compound, a cyanine-based pigment compound, a phthalocyanine-based compound, an immonium-based compound, a thiol complex-based compound, a transition metal oxide-based compound, a squarylium-based pigment compound, a naphthalocyanine-based pigment compound, a quaterylene-based pigment compound, a dithiol metal complex-based pigment compound, a croconium compound, and the like.

Infrared light output from the aerosol detection sensor (155) may be reflected from the inner surface of the second chamber (C2). If the infrared light is reflected by the inner surface of the second chamber (C2) and received by the light receiving unit (1552), the information on the amount of aerosol (A2) in the second chamber (C2) calculated by the aerosol detection sensor (155) may be inaccurate. By minimizing the amount of infrared light reflected by the inner surface of the second chamber (C2), the amount of aerosol (A2) in the second chamber (C2) can be accurately calculated.

The control unit (17) can calculate the amount of aerosol (A2) in the second chamber (C2) based on the detection signal received from the aerosol detection sensor (155).

The control unit (17) can determine whether the liquid aerosol generating material (A1) is exhausted based on the amount of aerosol produced.

The battery (16) can supply power to the heater (210) based on the control of the control unit (17).

FIG. 8 is a flowchart illustrating the operation of an aerosol generating device according to one embodiment of the present disclosure.

Referring to FIG. 8, the aerosol generator (10) can supply power to the heater (210) in operation S810. The aerosol generator (10) can supply power to the heater (210) based on detecting that a stick (40) is inserted into the insertion space (230), that the device is turned on, or that a user input is received through an input device. The aerosol generator (10) can supply power to the heater (210) based on a preset temperature profile.

The aerosol generator (10) can detect a puff in operation S820. The aerosol generator (10) can detect a puff based on a signal output from a puff sensor (151).

The aerosol generating device (10) can activate the aerosol detection sensor (155) in operation S830. The aerosol generating device (10) can activate the aerosol detection sensor (155) based on detecting a puff. The aerosol detection sensor (155) can be activated based on receiving an activation signal.

The aerosol generating device ((10)) can monitor a signal output from an activated aerosol detection sensor (155). The aerosol generating device (10) can receive a detection signal from the activated aerosol detection sensor (155).

The aerosol generating device (10) can receive a detection signal for a reference time (hereinafter referred to as the first time) from the time when the puff is detected. At this time, the first time can correspond to the average time required for one puff of the user. The first time can be set based on the user's inhalation pattern. For example, the first time can be about 1.5 seconds to 2.0 seconds. Preferably, the first time can be about 1.8 seconds.

The aerosol generating device (10) can receive a detection signal from the time a puff is detected to the time the puff ends. The aerosol generating device (10) can determine the start time and the end time of the puff based on the signal output from the puff sensor (151), and can receive a detection signal from the aerosol detection sensor (155) from the start time of the puff to the end time of the puff.

The aerosol generator (10) can calculate the amount of aerosol (A2) in the second chamber (C2) based on a detection signal received from the activated aerosol detection sensor (155) in operation S840.

The aerosol generator (10) can calculate the amount of aerosol (A2) in the second chamber (C2) based on the matching information stored in the memory (14). The memory (14) can match and store the detection signal of the aerosol detection sensor and the amount information of the aerosol generated by the atomization of the aerosol generating material. Here, the detection signal of the aerosol detection sensor can be the information on the amount (intensity) of infrared light detected by the aerosol detection sensor (155). The aerosol generator (10) can compare the received detection signal with the information stored in the memory (14) and calculate the amount information of the aerosol matching the detection signal.

The aerosol generating device (10) receives a plurality of detection signals from the aerosol detection sensor (155) for a first period of time from the time when the puff is detected or from the time when the puff is detected until the time when the puff ends, calculates a median, an average, an integral, etc. of the received detection signals, and compares them with information stored in the memory (14). While the puff is maintained, the amount of aerosol (A2) in the second chamber (C2) may change over time due to the puff. Therefore, by calculating information on the amount of aerosol based on a plurality of detection signals received during the time when the puff is maintained, the accuracy of the calculated aerosol amount can be increased.

The aerosol generating device (10) can compare the amount of the produced aerosol with a reference value. Here, the reference value may be a value reflecting a state in which the liquid aerosol generating material (A1) in the first chamber (C1) is exhausted. For example, the reference value may be a value corresponding to an amount corresponding to about 0% to 50% of the amount of aerosol generated during one puff having an average intensity. However, the reference value is not limited thereto, and may be set differently depending on the type of cartridge, the type of wick, the type of heater, etc.

The aerosol generating device (10) can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is exhausted when the amount of aerosol is below a reference value, and can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is not exhausted when the amount of aerosol exceeds the reference value.

If the amount of aerosol is below the reference value, the aerosol generator (10) can control the power supplied to the heater (210) to be cut off in operation S850. For example, the aerosol generator (10) can control the power supplied to the heater (210) to be cut off until the cartridge (200) is separated from the main body (100).

The aerosol generating device (10) can output information related to the exhaustion of the liquid aerosol generating material and/or replacement of the cartridge (200) through the output device (122).

If the amount of aerosol exceeds the reference value, the liquid aerosol generating material (A1) in the first chamber (C1) is not exhausted, so the aerosol generating device (10) can be controlled to continuously supply power to the heater (210).

Thereafter, the aerosol generator (10) may repeatedly perform the operation illustrated in FIG. 8 in relation to each puff generation. However, in operation S850, if the power supplied to the heater (210) is controlled to be cut off, the operation illustrated in FIG. 8 may not be performed again until the cartridge (200) is replaced.

Meanwhile, in operation S840, the aerosol generating device (10) can determine whether the liquid aerosol generating material is exhausted based on the rate of change of the detection signal.

The aerosol generating device (10) detects a plurality of puffs through the puff sensor (151), receives a detection signal from the aerosol detection sensor (155) based on each puff detection, and can determine a change rate of the detection signal based on the detection signals detected for two consecutive puffs. At this time, the change rate of the detection signal can be calculated as a value obtained by subtracting the size of the previous detection signal from the size of the current detection signal and dividing the value by the size of the previous detection signal. The change rate of the detection signal can have a value of positive, negative, and 0. The aerosol generating device (10) compares the change rate of the detection signal with a predetermined value (hereinafter, a first change rate), and if the change rate of the detection signal is less than or equal to the first change rate, it can determine that the liquid aerosol generating material is exhausted. At this time, the first change rate can be 0 or a negative number.

When the amount of the liquid aerosol generating substance in the first chamber (C1) decreases and is exhausted, the amount of aerosol generated may decrease rapidly in the puffs generated around the exhaustion point. The rate of change of the detection signal may be lower than or equal to the first rate of change in response to the rapid decrease in the amount of aerosol generated. For example, the first rate of change may have a value of 0 or lower and -0.5 or higher. However, the value of the first rate of change is not limited thereto.

The aerosol generator (10) can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is exhausted when the change rate of the detection signal is less than or equal to the first change rate, and can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is not exhausted when the change rate exceeds the first change rate.

FIG. 9 is a flowchart illustrating the operation of an aerosol generating device according to one embodiment of the present disclosure, and FIG. 10 is a drawing referenced in an explanation of the operation of an aerosol generating device according to one embodiment of the present disclosure. Detailed descriptions of contents overlapping with those disclosed in FIGS. 7 and 8 are omitted.

Referring to FIGS. 9 and 10, the aerosol generating device (10) can determine whether the liquid aerosol generating material is exhausted based on a detection signal output by the aerosol detection sensor (155) when the intensity of the puff is below a predetermined intensity.

The aerosol generator (10) can supply power to the heater (210) in operation S910. The aerosol generator (10) can detect a puff in operation S920. The aerosol generator (10) can activate the aerosol detection sensor (155) in operation S930 and monitor a signal output from the activated aerosol detection sensor (155). Operations S910 to S930 may correspond to the preceding operations S810 to S830.

The aerosol generator (10) can determine the intensity of the puff based on the signal output from the puff sensor (151) in operation S940. The aerosol generator (10) can compare the puff intensity with a predetermined intensity (hereinafter, referred to as the first intensity). Here, the first intensity can correspond to an intensity having a value that is a certain level greater than the average intensity of one puff of the user (e.g., an intensity 1.5 to 2.0 times greater than the average intensity). The first intensity can be set based on the user's inhalation pattern. However, the first intensity is not limited thereto.

The aerosol generator (10) may not determine whether the liquid aerosol generating material is exhausted if the puff intensity exceeds the first intensity. The aerosol generator (10) may output guidance information in operation S950. For example, the guidance information may include information indicating that the puff intensity is greater than or equal to a threshold intensity for determining whether the liquid aerosol generating material is exhausted. For example, the guidance information may include information indicating that the puff is too strong and thus induces lowering the intensity in the next puff.

When the puff intensity is above a certain level, the amount of aerosol (A2) in the second chamber (C2) may be rapidly reduced by the puff. In this case, the amount of aerosol (A2) in the second chamber (C2) may be calculated as an excessively small value. The amount of infrared ray (R2) received by the light receiving unit (1552) may be very small compared to the amount of infrared ray (R1) emitted by the light emitting unit (1551) of the aerosol detection sensor (155). The aerosol generating device (10) may misjudge that the liquid aerosol generating material is exhausted even though it is not exhausted. The aerosol generating device (10) may increase the accuracy of the judgment of exhaustion by not judging whether the liquid aerosol generating material is exhausted when the puff intensity exceeds the first intensity.

When the puff intensity is less than or equal to the first intensity, the aerosol generator (10) can calculate the amount of aerosol (A2) in the second chamber (C2) based on a detection signal received from the activated aerosol detection sensor (155) in operation S960. The aerosol generator (10) can compare the calculated amount of aerosol with a reference value.

The aerosol generating device (10) can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is exhausted when the amount of aerosol is below a reference value, and can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is not exhausted when the amount of aerosol exceeds the reference value.

If the amount of aerosol is below the reference value, the aerosol generator (10) can control the power supplied to the heater (210) to be cut off in operation S970. The aerosol generator (10) can output information related to the exhaustion of the liquid aerosol generating material and/or replacement of the cartridge (200) through the output device (122).

If the amount of aerosol exceeds the reference value, the liquid aerosol generating material (A1) in the first chamber (C1) is not exhausted, so the aerosol generating device (10) can be controlled to continuously supply power to the heater (210).

Thereafter, the aerosol generator (10) may repeatedly perform the operation illustrated in FIG. 9 in relation to each puff generation. However, in operation S970, if the power supplied to the heater (210) is controlled to be cut off, the operation illustrated in FIG. 9 may not be performed until the cartridge (200) is replaced.

Meanwhile, in operation S940, the aerosol generator (10) can compare the puff intensity with the first intensity and the second intensity. Here, the second intensity can be a value smaller than the first intensity. For example, the second intensity can correspond to an intensity having a value that is a certain level smaller than the average intensity of one puff of the user (e.g., an intensity 0.1 to 0.5 times the average intensity). The second intensity can be set based on the user's inhalation pattern. However, the second intensity is not limited thereto.

The aerosol generator (10) may not determine whether the liquid aerosol generating material is exhausted if the puff intensity is greater than the first intensity or less than the second intensity. The aerosol generator (10) may output guidance information in operation S950.

When the puff intensity is greater than the first intensity, the amount of aerosol (A2) in the second chamber (C2) may be rapidly reduced by the puff. In this case, the amount of aerosol (A2) in the second chamber (C2) may be calculated as an excessively small value. The amount of infrared ray (R2) received by the light receiving unit (1552) may become very small compared to the amount of infrared ray (R1) emitted by the light emitting unit (1551) of the aerosol detection sensor (155). The aerosol generating device (10) may misjudge that the liquid aerosol generating material is exhausted even though it is not exhausted.

In addition, when the puff strength is less than the second strength, the puff is too weak, so that the aerosol (A2) inside the second chamber (C2) may hardly be emitted outside the second chamber (C2) by the puff. In this case, the amount of the aerosol (A2) inside the second chamber (C2) may be calculated as an excessively large value. The aerosol generator (10) may misjudge that the liquid aerosol generating substance is not exhausted even though the liquid aerosol generating substance is exhausted or only a very small amount exists inside the first chamber (C1).

The aerosol generator (10) can increase the accuracy of determining whether the liquid aerosol generating material is exhausted by not determining whether the liquid aerosol generating material is exhausted when the puff intensity is greater than the first intensity or less than the second intensity.

When the puff intensity is less than or equal to the first intensity and greater than or equal to the second intensity, the aerosol generating device (10) can calculate the amount of aerosol (A2) in the second chamber (C2) based on a detection signal received from the activated aerosol detection sensor (155) in operation S960.

FIG. 11 is a flowchart illustrating the operation of an aerosol generating device according to one embodiment of the present disclosure, and FIG. 12 is a drawing referenced in an explanation of the operation of an aerosol generating device according to one embodiment of the present disclosure. Detailed descriptions of contents overlapping with those disclosed in FIGS. 7 and 8 are omitted.

Referring to FIGS. 11 and 12, the aerosol generating device (10) can determine whether the liquid aerosol generating material is exhausted based on a detection signal output by the aerosol detection sensor (155) after the puff is terminated.

The aerosol generator (10) can supply power to the heater (210) in operation S1110. The aerosol generator (10) can detect a puff in operation S1220. Operations S1110 and S1120 can correspond to the preceding operations S810 and S820.

The aerosol generator (10) can determine the start and end of a puff based on a signal output from a puff sensor (151) in operation S1130. The aerosol generator (10) can detect whether a puff is ended.

When it is determined that the puff has ended, the aerosol generator (10) can activate the aerosol detection sensor (155) in operation S1140. The aerosol generator ((10)) can monitor a signal output from the activated aerosol detection sensor (155).

The aerosol generator (10) can be controlled to supply power to the heater (210) even after the puff is terminated. At this time, the power supplied to the heater (210) may be the same size as the power supplied to the heater (210) while the puff is maintained. The aerosol generator (10) can be controlled to supply power to the heater (210) for a predetermined time (hereinafter, a second time) from the time when the puff is terminated. For example, the second time may be a time between 0.2 seconds and 0.4 seconds. Even after the puff is terminated, the aerosol (A2) can be generated during the second time.

The aerosol generating device (10) can activate the aerosol detection sensor (155) for a second time from the time the puff ends. The aerosol generating device (10) can monitor a signal output from the activated aerosol detection sensor (155) for a second time from the time the puff ends.

The aerosol (A2) generated after the puff is terminated may not leak out of the second chamber (C2) but may be maintained within the second chamber (C2). The amount of infrared ray (R2) received by the light receiving unit (1552) of the aerosol detection sensor (155) may be proportional to the amount of aerosol (A2) within the second chamber (C2). The aerosol generating device (10) measures the amount of aerosol (A2) generated after the puff is terminated and determines whether the liquid aerosol generating material (A1) is exhausted based on the amount, thereby increasing the accuracy of determining whether or not it is exhausted.

The aerosol generator (10) can calculate the amount of aerosol (A2) in the second chamber (C2) based on a detection signal received from the activated aerosol detection sensor (155) in operation S1150. The aerosol generator (10) can compare the calculated amount of aerosol with a reference value.

The aerosol generating device (10) can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is exhausted when the amount of aerosol is below a reference value, and can determine that the liquid aerosol generating material (A1) in the first chamber (C1) is not exhausted when the amount of aerosol exceeds the reference value.

If the amount of aerosol is below the reference value, the aerosol generator (10) can control the power supplied to the heater (210) to be cut off in operation S1160. The aerosol generator (10) can output information related to the exhaustion of the liquid aerosol generating material and/or replacement of the cartridge (200) through the output device (122).

Thereafter, the aerosol generator (10) may repeatedly perform the operation illustrated in FIG. 11 in relation to each puff generation. However, in operation S1160, if the power supplied to the heater (210) is controlled to be cut off, the operation illustrated in FIG. 11 may not be performed until the cartridge (200) is replaced.

As described above, according to at least one of the embodiments of the present disclosure, the amount of aerosol vaporization can be detected through a sensor to accurately determine whether the aerosol generating material is exhausted.

According to at least one embodiment of the present disclosure, power supplied to the heater can be adjusted when the aerosol generating material is exhausted.

According to at least one embodiment of the present disclosure, it is possible to accurately inform a user of the exhaustion of aerosol generating material and the time of replacement of the cartridge.

Referring to FIGS. 1 to 12, an aerosol generating device (10) according to one aspect of the present disclosure includes: a first chamber (C1) for storing a liquid aerosol generating substance; an insertion space (230) in which an elongated space is formed; a second chamber (C2) communicating with the insertion space (230); a heater (210) positioned within the second chamber (C2) for heating the liquid aerosol generating substance to generate an aerosol; an aerosol detection sensor (155) arranged toward the interior of the second chamber (C2); and a control unit (17). The control unit (17) can calculate the amount of aerosol within the second chamber (C2) based on a detection signal received from the aerosol detection sensor (155), and determine whether the liquid aerosol generating substance is exhausted based on the calculated amount of aerosol.

In addition, according to another aspect of the present disclosure, the aerosol detection sensor (155) may include a light emitting portion (1551) that emits infrared light toward the second chamber (C2); and a light receiving portion (1552) that receives light reflected or scattered by the emitted infrared light.

Additionally, according to another aspect of the present disclosure, the second chamber (C2) may be formed of a transparent material.

Additionally, according to another aspect of the present disclosure, the second chamber (C2) may have an infrared absorbing material applied therein.

In addition, according to another aspect of the present disclosure, the device further includes a puff sensor (151) for detecting a puff; and the control unit (17) can activate the aerosol detection sensor (155) based on detection of a puff through the puff sensor (151), and determine whether the liquid aerosol generating material is exhausted based on a detection signal received from the activated aerosol detection sensor (155).

In addition, according to another aspect of the present disclosure, the control unit (17) determines whether the liquid aerosol generating material is exhausted based on a detection signal received from the aerosol detection sensor (155) for a first time period from the time the puff is detected, and the first time period may be 1.5 to 2.0 seconds.

In addition, according to another aspect of the present disclosure, the control unit (17) detects a plurality of puffs through the puff sensor (151), receives a detection signal from the aerosol detection sensor (155) based on each puff detection, determines a change rate of the detection signal based on detection signals detected for two consecutive puffs, and if the change rate of the detection signal is lower than a predetermined change rate, it can be determined that the liquid aerosol generating material is exhausted.

In addition, according to another aspect of the present disclosure, the control unit (17) can determine the intensity of the puff based on a signal output from the puff sensor (151), and if the intensity of the puff is lower than a predetermined intensity, determine whether the liquid aerosol generating substance is exhausted based on a detection signal received from the aerosol detection sensor (155).

In addition, according to another aspect of the present disclosure, the control unit (17) can determine the start time of a puff and the end time of a puff based on a signal output from the puff sensor (151), supply power to the heater (210) for a second time from the end time of the puff, and activate the aerosol detection sensor (155) for the second time.

In addition, according to another aspect of the present disclosure, a main body (100) including an output device (122); and a cartridge (200) detachably attached to the main body (100); wherein the cartridge (200) includes the first chamber (C1) and the heater (210), and the control unit (17) may cut off the supply of power to the heater (210) based on the exhaustion of the liquid aerosol generating substance, and output information related to the exhaustion of the liquid aerosol generating substance and/or the replacement of the cartridge (200) through the output device (122).

Any of the embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct. Any of the embodiments or other embodiments of the present disclosure described above may have their respective components or functions combined or used together.

For example, it means that a configuration A described in a particular embodiment and/or drawing can be combined with a configuration B described in another embodiment and/or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

The above detailed description should not be construed as limiting in all respects but should be considered as illustrative. The scope of the invention should be determined by a reasonable interpretation of the appended claims, and all changes coming within the equivalent scope of the invention are intended to be embraced within the scope of the invention.

Claims (10)

A first chamber for storing a liquid aerosol generating substance;
Insertion space where a long, extended space is formed;
A second chamber communicating with the above insertion space;
A heater positioned within the second chamber and configured to heat the liquid aerosol generating material to generate an aerosol;
An aerosol detection sensor positioned toward the interior of the second chamber;
A puff sensor that detects a puff; and
including a control unit;
The above control unit,
The intensity of the puff is determined based on the signal output from the puff sensor, and if the intensity of the puff is lower than or equal to a predetermined intensity, the amount of aerosol in the second chamber is calculated based on the detection signal received from the aerosol detection sensor, and based on the calculated amount of aerosol, it is determined whether the liquid aerosol generating material is exhausted.
If the intensity of the above puff exceeds the above-mentioned intensity, it is not determined whether the liquid aerosol generating substance is exhausted.
Aerosol generator. In the first paragraph,
The above aerosol detection sensor,
a light emitting portion that emits infrared light toward the second chamber; and
An aerosol generating device including a light receiving unit that receives light reflected or scattered by the emitted infrared rays.
In the first paragraph,
The second chamber above,
An aerosol generating device formed of a transparent material.
In the first paragraph,
The second chamber above,
An aerosol generating device having an infrared absorbing material applied to the inside.
In the first paragraph,
The above control unit,
Activating the aerosol detection sensor based on the detection of a puff through the puff sensor.
Aerosol generator. In paragraph 5,
The above control unit,
Based on a detection signal received from the aerosol detection sensor for a first time from the time the puff is detected, it is determined whether the liquid aerosol generating material is exhausted.
The first hour above is,
An aerosol generating device having a time of 1.5 to 2.0 seconds.
In paragraph 5,
The above control unit,
Detecting multiple puffs through the puff sensor, receiving a detection signal from the aerosol detection sensor based on each puff detection, and determining a rate of change of the detection signal based on the detection signals detected for two consecutive puffs,
An aerosol generating device that determines that the liquid aerosol generating material is exhausted when the change rate of the above detection signal is less than or equal to a predetermined change rate.
delete delete In the first paragraph,
A body including an output device; and
A cartridge which is detachable from the above body is included;
The above cartridge,
comprising the first chamber and the heater;
The above control unit,
Based on the exhaustion of the liquid aerosol product, the power supply to the heater is cut off,
An aerosol generating device that outputs information related to the exhaustion of the liquid aerosol generating material and/or replacement of the cartridge through the output device.

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