Aerosol-generating device

Abstract

The aerosol generating device comprises: an aerosol generator for generating an aerosol; and a potential difference sensor that generates a signal in accordance with a potential difference that varies as the composition of the aerosol generated by the aerosol generator varies.

Description

Technical Field

[0001] The embodiments relate to an aerosol generating apparatus, and more specifically, to an aerosol generating apparatus capable of accurately detecting changes in the composition of aerosols. Background Technology

[0002] Recently, there has been a growing demand for alternatives to traditional combustible cigarettes. For example, methods for providing aerosols by heating liquid or solid aerosol-generating substances, or methods for generating aerosols by heating aerosol-generating substances and passing the generated aerosols through an aroma medium, have been studied.

[0003] To control the operation of the aerosol generating device, the device also includes sensors. For example, when the aerosol generating device includes a temperature sensor, temperature changes in or around the heater can be detected. As another example, if the aerosol generating device includes a suction sensor for detecting a user's suction action, the operation of the aerosol generating device can be controlled based on the user's suction action when inhaling the aerosol. Summary of the Invention

[0004] The technical problem to be solved Aerosol generating devices, including temperature sensors or suction sensors, can utilize signal information related to temperature, which is associated with the operation of the aerosol generating device, or to the user's suction action. However, such signal information related to temperature or the user's suction action is not directly related to the components contained in the aerosol generated by the aerosol generating device and transmitted to the user.

[0005] It is crucial that aerosol generating devices operate effectively in accordance with the various environments in which they are used and the diverse types of users. For effective operation of an aerosol generating device, a device capable of detecting the components contained within the aerosol is required.

[0006] The embodiment provides an aerosol generating device that can operate based on signal information directly related to the composition of the aerosol generated by the aerosol generating device.

[0007] The problems to be solved by the embodiments of this disclosure are not limited to the technical problems described above. Those skilled in the art to which the embodiments pertain can clearly understand the problems not mentioned from this specification and the accompanying drawings.

[0008] Additional aspects will be described in the following description, and some of these aspects may become clear or be understood by performing the embodiments provided in this disclosure.

[0009] Technical solutions for solving the problem An aerosol generating apparatus according to one aspect includes: an aerosol generator for generating aerosols; and a potential difference sensor for generating a signal based on a potential difference that changes with the composition of the aerosols generated by the aerosol generator.

[0010] The aerosol generating apparatus may further include a channel through which at least a portion of the aerosol generated by the aerosol generator flows. A potential difference sensor may generate a signal based on changes in the composition of the aerosol flowing through the channel.

[0011] At least a portion of the potential difference sensor may be located in the channel.

[0012] Potential difference sensors can generate signals based on pH changes in aerosols.

[0013] An aerosol generator may include an aerosol generation chamber for generating aerosols. A channel may be connected to the aerosol generation chamber, through which aerosols generated from the aerosol generation chamber may flow.

[0014] Potential difference sensors can generate signals based on changes in the composition of aerosols flowing through a channel.

[0015] An aerosol generator may include a container for holding aerosol-generating articles for generating aerosols.

[0016] Aerosol generators may also include heaters for heating aerosol-generating articles.

[0017] The channel can be formed through the space between the aerosol-generated article contained in the containment and the inner surface of the containment.

[0018] An aerosol generator may include: a housing for housing an aerosol-generating article for generating aerosols; and a heater for heating the aerosol-generating article. A passage may pass through the housing.

[0019] An aerosol generator may include a cartridge for generating an aerosol from an aerosol generating substance. The aerosol generator may also include a containment that holds an aerosol generating article and transfers the aerosol generated from the cartridge to the aerosol generating article.

[0020] The potential difference sensor can be configured in the housing.

[0021] The aerosol generator may also include a heater that heats the aerosol generating article contained in the containment and generates aerosol.

[0022] A potential difference sensor can generate a signal based on a potential difference that changes with the variation of at least one component of the aerosol generated from the aerosol-generating article and the aerosol generated from the cartridge.

[0023] The aerosol generating apparatus may also include a controller for controlling the operation of the aerosol generator.

[0024] Aerosol generators can generate aerosols from aerosol-generating substances.

[0025] The controller can detect the depletion of aerosol-generating substances based on signals from a potential difference sensor. When the aerosol-generating substances are depleted, the controller can stop the aerosol generator from operating.

[0026] The controller can detect abnormal operation of the aerosol generator based on the signal from the potential difference sensor. When the aerosol generator operates abnormally, the controller can stop its operation.

[0027] Aerosol generators may include heaters for heating aerosol-generating substances.

[0028] The aerosol generating apparatus may also include a controller that controls the operation of the heater based on a predetermined temperature profile.

[0029] The controller can change the temperature profile used to control the heater's operation based on the signal from the potential difference sensor.

[0030] A potential difference sensor may include a signal generation unit that allows aerosols to pass through a mesh structure.

[0031] Aerosols can pass through a signal generation unit and generate droplets. The signal generation unit can generate a signal based on the potential difference that changes with the composition of the droplets.

[0032] A potential difference sensor can come into contact with an aerosol and liquefy a portion of it. It can also come into contact with droplets generated from the aerosol and generate a signal.

[0033] A potential difference sensor may include a reference electrode and a measuring electrode. Depending on changes in the composition of the aerosol, the potential difference between the reference and measuring electrodes may change, thereby generating a signal.

[0034] Technical effect According to the embodiment of the aerosol generating apparatus, a signal from the potential difference sensor is generated by changing the potential difference of the potential difference sensor based on changes in the composition of the aerosol. Therefore, changes in the composition of the aerosol generated by the aerosol generating apparatus can be detected accurately and rapidly.

[0035] According to the embodiment, the operation of the aerosol generating apparatus allows for rapid and accurate detection of aerosol depletion even without installing expensive sensors to detect the amount of aerosol generated. Furthermore, the operation of the aerosol generating apparatus can be effectively controlled based on the detection results from a potential difference sensor.

[0036] According to the embodiment, the operation of the aerosol generating device can be quickly and accurately responded to various abnormal operating conditions of the aerosol generating device using a potential difference sensor.

[0037] The operation of the aerosol generating device according to the above embodiment can immediately reflect changes in the composition of aerosols to control the operation of the aerosol generator, thereby achieving effective aerosol generation.

[0038] The effects of the embodiments are not limited to those described above. Those skilled in the art to which the embodiments pertain can clearly understand the effects not mentioned from this specification and the accompanying drawings.

[0039] The aspects and other aspects, features and advantages of specific embodiments of this disclosure become clear from the accompanying drawings. Attached Figure Description

[0040] Figure 1 This is a block diagram of an aerosol generating apparatus according to one embodiment.

[0041] Figure 2a An aerosol generating apparatus according to another embodiment is shown.

[0042] Figure 2b An aerosol generating apparatus according to yet another embodiment is shown.

[0043] Figure 3 An aerosol generating apparatus according to yet another embodiment is shown.

[0044] Figure 4 An aerosol generating apparatus according to yet another embodiment is shown.

[0045] Figure 5 This is a cross-sectional view along the length of an aerosol generating apparatus according to another embodiment.

[0046] Figure 6 This is a cross-sectional view along the length of a portion of an aerosol generating apparatus according to yet another embodiment.

[0047] Figure 7 This is a cross-sectional view of an aerosol generating apparatus according to yet another embodiment.

[0048] Figure 8 This is a cross-sectional view of an aerosol generating apparatus according to yet another embodiment.

[0049] Figure 9 This is a cross-sectional view of an aerosol generating apparatus according to yet another embodiment.

[0050] Figure 10 It can be applied to Figures 1 to 9 A perspective view of the potential difference sensor of the aerosol generation device in the illustrated embodiment.

[0051] Figure 11 This is a flowchart illustrating an example of the operation of an aerosol generating apparatus according to various embodiments.

[0052] Figure 12 This is a flowchart illustrating another example of the operation of an aerosol generating apparatus according to various embodiments.

[0053] Figure 13 This is a flowchart illustrating yet another example of the operation of the aerosol generating apparatus according to various embodiments. Detailed Implementation

[0054] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals, the same or similar components will be assigned the same reference numerals, and repeated descriptions will be omitted. Similar reference numerals may be used for similar or related components in the description of the drawings.

[0055] The suffixes “module” and “unit” used in the following description for the purpose of drafting the specification are used interchangeably or for convenience only, and do not inherently have different meanings or functions. Furthermore, the suffixes “module” or “unit” can include units implemented in hardware, software, or firmware, and can be used interchangeably with terms such as logic, logic block, component, or circuit. A “module” or “unit” can be a component that is integrally formed or the smallest unit or part of said component that performs one or more functions. For example, a “module” or “unit” can be implemented as an application-specific integrated circuit (ASIC).

[0056] Furthermore, when describing the embodiments disclosed in this specification, detailed descriptions of relevant well-known technologies will be omitted if it is determined that such detailed descriptions may obscure the spirit of the embodiments disclosed in this specification. Additionally, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification; the technical concepts disclosed in this specification are not limited to the drawings and should be understood to include all modifications, equivalents, and even substitutions included within the scope of the concepts and techniques of this disclosure.

[0057] Terms including ordinal numbers such as "first" and "second" can be used to describe multiple constituent elements, but the constituent elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one constituent element from other constituent elements.

[0058] When it is mentioned that a component is "connected" or "coupled" to another component, it should be understood that it can be directly connected or directly coupled to the other component, but there may also be other components in between. Conversely, when it is mentioned that a component is "directly connected" or "directly coupled" to another component, it should be understood that there are no other components in between.

[0059] Unless the context clearly indicates that they have different meanings, the singular form of a statement covers the plural form of a statement.

[0060] Embodiments of this disclosure can be implemented in software that includes one or more instructions stored in a storage medium (e.g., memory 17) readable by a machine (e.g., aerosol generating apparatus 1). For example, a processor (e.g., control unit 12) of the machine (e.g., aerosol generating apparatus 1) can invoke at least one of the more than one stored instructions from the storage medium and execute that instruction. This enables the machine to operate in a manner that performs at least one function according to the invoked at least one instruction. The more than one instruction may include code generated by a compiler or code executable by an interpreter. The storage medium readable by the machine can be provided in the form of a non-transitory storage medium. The term "non-transitory" simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and this term does not distinguish between semi-permanent and temporary storage of data in the storage medium.

[0061] In this disclosure, the orientation of the aerosol generating device 1 can be defined using a Cartesian coordinate system as a reference. The x-axis direction in the Cartesian coordinate system can be defined as the left-right direction of the aerosol generating device 1. The y-axis direction can be defined as the front-back direction of the aerosol generating device 1. The z-axis direction can be defined as the up-down direction of the aerosol generating device 1.

[0062] Figure 1 This is a block diagram of an aerosol generating apparatus 1 according to one embodiment.

[0063] According to one embodiment, the aerosol generating apparatus 1 may include a power supply 11, a control unit 12, a sensor unit 13, an output unit 14, an input unit 15, a communication unit 16, a memory 17, and / or heaters 18 and 24. However, those skilled in the art will understand that, according to the design of the aerosol generating apparatus 1, certain components may be omitted. Figure 1 The shown components may include some of the constituent elements, or new constituent elements may be added.

[0064] According to one embodiment, the sensor unit 13 can sense the state of the aerosol generating device 1 or the state around the aerosol generating device 1, and transmit the sensed information to the control unit 12. For example, the sensor unit 13 may include a temperature sensor, a puff sensor, an insertion sensor, a reuse sensor, an overly moist sensor, a cigarette identification sensor, a cartridge sensor, a cap sensor, and / or a motion sensor. In addition, the sensor unit 13 may also include various sensors such as a liquid level sensor for sensing the remaining liquid in the cartridge and a water immersion sensor for sensing water immersion in the aerosol generating device 1.

[0065] According to one embodiment, a temperature sensor can sense the temperature at which heaters 18 and 24 are heated. The aerosol generating apparatus 1 may include a separate temperature sensor for sensing the temperature of heaters 18 and 24, or the heaters 18 and 24 themselves may function as temperature sensors. As an example, the temperature sensor can be used to measure the impedance of heater 18. The impedance of heater 18 may be correlated with the temperature of heater 18. The temperature sensor can measure the current and / or voltage applied to heater 18 (or induction coil). Based on the measured current and / or voltage, the impedance of heater 18 can be calculated. The control unit 12 can estimate the temperature of heater 18 based on the calculated impedance.

[0066] As an example, the temperature sensor may include a resistive element (e.g., a thermistor) whose resistance value changes in response to temperature changes in the heaters 18 and 24. The temperature sensor may output a signal corresponding to the resistance value of the resistive element, and the control unit 12 may detect the temperature and / or temperature changes of the heaters 18 and 24 based on the aforementioned signal corresponding to the resistance value.

[0067] As another example, the temperature sensor may include a sensor that detects the resistance value of heaters 18 and 24. The temperature sensor may output a signal corresponding to the resistance value of heaters 18 and 24, and the control unit 12 may detect the temperature and / or temperature change of heaters 18 and 24 based on the aforementioned signal corresponding to the resistance value.

[0068] According to one embodiment, a temperature sensor can sense the temperature of the power supply 11. The temperature sensor can be arranged adjacent to the power supply 11. For example, the temperature sensor can be attached to a surface of the power supply 11 (e.g., a battery) and / or mounted on a surface of a printed circuit board. As an example, the aerosol generating apparatus 1 may include a power protection circuit (PCM), and the temperature sensor can be arranged adjacent to the power supply 11 together with the power protection circuit.

[0069] According to one embodiment, the temperature sensor may also be arranged inside the housing (not shown) of the aerosol generating device 1 to sense the temperature inside the housing (not shown).

[0070] According to one embodiment, the suction sensor can sense the user's suction.

[0071] As an example, the suction sensor may include a pressure sensor. The pressure sensor can output a signal corresponding to the internal pressure of the aerosol generating device 1, and the control unit 12 can detect the user's suction based on the aforementioned signal corresponding to the internal pressure. The internal pressure of the aerosol generating device 1 may correspond to the pressure of the gas flow channel. The suction sensor may be arranged in the aerosol generating device 1 corresponding to the gas flow channel.

[0072] As another example, the suction sensor may include a temperature sensor. When a user performs suction, a temporary temperature drop may occur in the airflow channel, the space where the aerosol-generating article is inserted (hereinafter referred to as the insertion space), heaters 18, 24, etc. The control unit 12 can detect the user's suction based on a signal output from the temperature sensor corresponding to the temperature of the airflow channel, etc.

[0073] As another example, the suction sensor may include both a pressure sensor and a temperature sensor. In this case, the temperature sensor can measure the temperature used to correct the internal pressure measured by the pressure sensor. As an example, the suction sensor can correct the signal corresponding to the internal pressure based on the temperature measured by the temperature sensor and output the corrected signal. As another example, the suction sensor can output both a signal corresponding to the temperature measured by the temperature sensor and a signal corresponding to the internal pressure measured by the suction sensor. In this case, the control unit 12 can receive the signals and correct the signal corresponding to the internal pressure based on the signal corresponding to the temperature.

[0074] As another example, the suction sensor may include a capacitive sensor. In this disclosure, a capacitive sensor may also be referred to as a cap sensor or capacitive sensor. When a user performs suction, temperature changes and / or aerosol flow may occur within the insertion space of the aerosol-generating article, thereby potentially changing the dielectric constant inside the insertion space. The control unit 12 can detect the user's suction based on a signal output from the capacitive sensor corresponding to the dielectric constant, etc., inside the insertion space.

[0075] The suction sensor is not limited to the examples above and can be implemented by a variety of sensors used to sense a user's suction.

[0076] According to one embodiment, the insertion sensing sensor is capable of sensing the insertion and / or removal of an aerosol-generating article. The insertion sensing sensor may be disposed around the periphery of the insertion space. Furthermore, the insertion sensing sensor may also include any combination of the examples described above.

[0077] As an example, the insertion sensing sensor may include a capacitive sensor. The capacitive sensor may include at least one conductor, and the at least one conductor may be arranged adjacent to the insertion space. When an aerosol-generating article is inserted into or removed from the insertion space, the dielectric constant around the conductor may change. The control unit 12 may detect the insertion and / or removal of the aerosol-generating article based on a signal output from the capacitive sensor corresponding to the dielectric constant, etc., inside the insertion space.

[0078] As another example, the insertion sensing sensor may include an inductive sensor. The inductive sensor may include at least one coil, and the at least one coil may be arranged adjacent to the insertion space. When the aerosol generating article (e.g., a wrapper of the aerosol generating article) includes a conductor, a change in the magnetic field may be generated around the coil through which the current flows when the aerosol generating article is inserted into or removed from the insertion space. The control unit 12 may sense the insertion and / or removal of the aerosol generating article including the conductor based on the characteristics of the current output from or sensed by the inductive sensor (e.g., the frequency, current value, voltage value, inductance value, impedance value, etc. of the alternating current). Alternatively, an inductive heating element (SUS) may also be included in the aerosol generating article (e.g., the dielectric portion of the aerosol generating article). Even in this case, the magnetic field around the coil may change based on the insertion or removal of the heating element or the like in the insertion space, and the control unit 12 can sense the insertion and / or removal of the aerosol generating article based on the current characteristics of the inductive sensor.

[0079] The insertion sensing sensor is not limited to the examples described above, and can be implemented by various sensors (e.g., proximity sensors) used to sense the insertion and / or removal of aerosol-generating articles. Furthermore, the insertion sensing sensor can also include any combination of the examples described above. According to one embodiment, the insertion sensing sensor may also include a switch, etc., for sensing pressure generated by the aerosol-generating article.

[0080] According to one embodiment, a reuse sensing sensor can detect whether an aerosol-generating article has been reused. As an example, the reuse sensing sensor can be a color sensor for sensing the color of the aerosol-generating article. If a user uses the aerosol-generating article, the color of a portion of the outer casing of the aerosol-generating article may change due to the generated aerosol or heating. The color sensor can output a signal corresponding to the optical characteristics (e.g., wavelength of light) of the color of the outer casing based on the light reflected from it. If a color change is detected in a portion of the outer casing, the control unit 12 can determine that the aerosol-generating article inserted into the insertion space has been used.

[0081] According to one embodiment, an over-humidity sensing sensor can sense whether an aerosol-generating article is in an over-humid state. For example, the over-humidity sensing sensor may include a capacitive sensor. The capacitive sensor may include at least one conductor arranged adjacent to the insertion space. The control unit 12 can detect whether the aerosol-generating article is in an over-humid state based on the level of a signal corresponding to the dielectric constant, etc., output from the capacitive sensor. As an example, the control unit 12 can confirm the level range that the signal level falls into according to a lookup table, and determine the moisture content of the aerosol-generating article based on the confirmed level range.

[0082] According to one embodiment, the cigarette identification sensor can sense whether the aerosol-generating article is genuine and / or the type of aerosol-generating article.

[0083] As an example, a cigarette identification sensor may include a light sensor for sensing an identification substance (or identification mark) located on the outer surface (e.g., packaging component) of an aerosol-generating article. The light sensor may illuminate the identification substance (or identification mark) of the aerosol-generating article and sense whether the aerosol-generating article is genuine and / or its type based on the reflected light. For example, the identification substance may include a substance that emits light of a specific wavelength based on the illuminated light. The control unit 12 may detect whether the aerosol-generating article is genuine and / or its type based on the range of said wavelengths.

[0084] As another example, the cigarette identification sensor may include a capacitive sensor. Depending on the type of aerosol-generating article inserted into the insertion space, the dielectric constant inside the insertion space may vary. The control unit 12 can detect whether the aerosol-generating article is genuine and / or its type based on a signal output from the capacitive sensor corresponding to the dielectric constant, etc., inside the insertion space.

[0085] As another example, a cigarette identification sensor may include an inductive sensor. When the packaging and / or interior (e.g., the dielectric portion) of the aerosol-generating article inserted into the insertion space includes a conductor, the characteristics of the current sensed by the inductive sensor (e.g., frequency, current value, voltage value, inductance value, impedance value, etc.) may vary depending on the type of aerosol-generating article inserted into the insertion space. The control unit 12 can detect whether the inserted aerosol-generating article is genuine and / or its type based on the characteristics of the current output from or sensed by the inductive sensor.

[0086] Cigarette identification sensors are not limited to the examples described above and can be implemented using various sensors for sensing whether an aerosol-generating article is genuine and / or for sensing the type of aerosol-generating article. Furthermore, cigarette identification sensors can also include any combination of the examples described above.

[0087] According to one embodiment, the cartridge sensing sensor can sense the installation and / or removal of the cartridge. For example, the cartridge sensing sensor may include an inductive sensor, a capacitive sensor, a resistive sensor, a Hall effect sensor (Hall IC), and / or an optical sensor.

[0088] According to one embodiment, the cap sensing sensor can sense the installation and / or removal of the cap. For example, the cap sensing sensor may include an inductive sensor, a capacitive sensor, a resistive sensor, a contact sensor, a Hall effect sensor (HAL IC), and / or an optical sensor. The cap may include a structure that covers at least a portion of a cartridge mounted or inserted into the aerosol generating device 1, or covers at least a portion of the housing of the aerosol generating device 1. If the cap is installed in or removed from the housing, the cap sensing sensor can output a signal corresponding to the installation or removal, and the control unit 12 can sense the installation or removal of the cap based on the signal corresponding to the installation or removal.

[0089] According to one embodiment, the motion sensing sensor is capable of sensing the motion of the aerosol generating device 1. The motion sensing sensor can be implemented by at least one of an accelerometer and a gyroscope.

[0090] According to one embodiment, in addition to the sensors described above, the sensor unit 13 may also include at least one of a humidity sensor, a barometric pressure sensor, a magnetic sensor, a position sensor (Global Positioning System (GPS)), or a proximity sensor. Since a person skilled in the art can intuitively infer the function of each sensor from its name, detailed descriptions are omitted.

[0091] According to one embodiment, the output unit 14 can output information about the status of the aerosol generating device 1. The output unit 14 may include, but is not limited to, a display, a haptic unit, and / or an audio output unit. For example, the information about the aerosol generating device 1 may include the charging / discharging status of the power supply 11, the preheating status of the heaters 18 and 24, the insertion / removal status of the aerosol generating article and / or cartridge, the installation and / or removal status of the cover, or a status where the use of the aerosol generating device 1 is restricted (e.g., abnormal object detected). The display can visually provide the user with information about the status of the aerosol generating device 1. For example, the display may include a light-emitting diode (LED), a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. If the display includes a touchpad, the display can also be used as an input unit 15. The haptic unit can tactilely provide the user with information about the status of the aerosol generating device 1. For example, the tactile part may include a vibrating motor, a piezoelectric element, an electrical stimulation device, etc. The sound output part can provide the user with information about the aerosol generating device 1 in an auditory manner. For example, the sound output part can convert an electrical signal into a sound signal and output the sound signal to the outside.

[0092] According to one embodiment, the power source 11 can supply power for the operation of the aerosol generating apparatus 1. The power source 11 may include one or more batteries. The power source 11 can supply power to heat the heaters 18 and 24. Furthermore, the power source 11 can supply power required for the operation of other components included in the aerosol generating apparatus 1, such as the control unit 12, sensor unit 13, output unit 14, input unit 15, communication unit 16, and memory 17. The power source 11 can be a rechargeable battery or a disposable battery. For example, the power source 11 can be a lithium polymer (LiPoly) battery, but is not limited thereto. The power source 11 can be a replaceable (detachable) battery (hereinafter, a removable battery). The removable battery can be installed in a battery housing provided within the aerosol generating apparatus 1, or it can be removed from the battery housing. The removable battery can be charged via wired and / or wireless means.

[0093] According to one embodiment, heaters 18 and 24 receive power from power source 11, thereby enabling them to heat the aerosol generating article and / or the medium and / or aerosol generating substance within the cartridge. The aerosol generating apparatus 1 may include heater 18 for heating the aerosol generating article and / or cartridge heater 24 for heating the cartridge (i.e., the solid and / or liquid medium).

[0094] According to one embodiment, heaters 18 and 24 can be resistance heaters. For example, resistance heaters can include resistive materials such as metals or metal alloys like titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, and nichrome. Resistance heaters can be implemented using metal heating wires, metal heating plates with conductive tracks, or ceramic heating elements.

[0095] According to one embodiment, heaters 18 and 24 can be induction heating heaters. For example, an induction heating heater may include an induction heating element (susceptor) that heats up by a magnetic field. An alternating current flowing through an induction coil can generate a magnetic field in the induction coil. The generated magnetic field can pass through the heater and can generate eddy currents in the induction heating element. Based on the generation of eddy currents, the induction heating element can be heated. According to one embodiment, the induction heating element may also be included inside an aerosol generating article (e.g., a medium section). In this case, the induction heating element included inside the aerosol generating article can also be heated by an induction coil.

[0096] Heaters 18 and 24 are not limited to the examples above, and may include various heating methods, structures, components, etc. for heating aerosol generating articles and / or smoke cartridges, or may be used in place of them.

[0097] According to one embodiment, the input unit 15 can receive information input by a user. For example, the input unit 15 may include a touch panel, a button, a keyboard, a dome switch, a jog wheel, a jog switch, etc.

[0098] According to one embodiment, the memory 17 is hardware used to store various data processed within the aerosol generating device 1, and can store data processed in the control unit 12 and data to be processed. For example, the memory 17 may include at least one type of storage medium selected from flash memory, hard disk, multimedia card microtype, card-type memory (e.g., SD (Secure Digital) or XD (Extreme Digital) memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic storage, magnetic disk, and optical disk. For example, the memory 17 may store data such as the operating time of the aerosol generating device 1, the maximum number of puffs, the current number of puffs, at least one temperature profile, and data regarding the user's smoking pattern.

[0099] According to one embodiment, the communication unit 16 may include at least one component for communicating with other electronic devices (e.g., portable electronic devices). For example, the communication unit 16 may include a Bluetooth communication unit, a Bluetooth Low Energy (BLE) communication unit, a Near Field Communication unit, a Wireless Local Area Network (WLAN) communication unit, a Zigbee communication unit, an Infrared Data Association (IrDA) communication unit, a Wi-Fi Direct (WFD) communication unit, an Ultra Wideband (UWB) communication unit, an Ant+ (Adaptive Network Topology) communication unit, a Cellular Network communication unit, an Internet communication unit, a Computer Network (e.g., a Local Area Network (LAN) or a Wide Area Network (WAN)) communication unit, etc.

[0100] According to one embodiment, the control unit 12 can control the entire operation of the aerosol generating device 1. For example, the control unit 12 may include at least one processor. The control unit 12 may be implemented by an array of multiple logic gates, or by a combination of a general-purpose microcontroller (MCU) (or microprocessor) and a memory storing a program that can be executed in the MCU. Furthermore, it will be understood by those skilled in the art to which this embodiment pertains that the control unit may also be implemented by other forms of hardware.

[0101] According to one embodiment, the control unit 12 can control the temperature of heaters 18 and 24 by controlling the power supply 11 to supply power to heaters 18 and 24. The control unit 12 can control the temperature of heaters 18 and 24 and / or the power supplied to heaters 18 and 24 based on the temperature of heaters 18 and 24 sensed by a temperature sensor (e.g., sensor unit 13). The control unit 12 can also control the temperature of heaters 18 and 24 and / or the power supplied to heaters 18 and 24 based on temperature curves and / or power curves stored in the memory 17.

[0102] According to one embodiment, the control unit 12 can control the power (e.g., voltage and / or current) supplied to the heaters 18 and 24 by controlling a power conversion circuit (not shown) electrically connected to the heaters 18 and 24 and the power supply 11. For example, the power conversion circuit may include a DC / DC converter (e.g., a buck converter, buck-boost converter, boost converter, Zener diode, etc.) for converting the power supplied to the heaters 18 and 24, and a DC / AC converter (e.g., an inverter) for converting the power supplied to the induction coil (not shown). The DC / AC converter can be implemented using a full-bridge circuit or a half-bridge circuit including multiple switching elements. For example, the power conversion circuit may include at least one switching element such as a bipolar junction transistor (BJT), a field-effect transistor (FET), etc.

[0103] According to one embodiment, the control unit 12 can regulate the current and / or voltage supplied to the heaters 18 and 24 by adjusting the frequency and / or duty ratio of the current pulses input to at least one switching element of the power conversion circuit (not shown). The duty ratio of the on / off operation of the switching element can correspond to the ratio of the output voltage of the power conversion circuit to the output voltage of the power supply 11.

[0104] According to one embodiment, the control unit 12 can control the power supplied to the heaters 18 and 24 using at least one of pulse width modulation (PWM) and proportional-integral-differential (PID) methods. For example, the control unit 12 can use PWM to supply current pulses with a predetermined frequency and duty cycle to the heaters 18 and 24. The control unit 12 can control the power supplied to the heaters 18 and 24 by adjusting the frequency and duty cycle of the current pulses. For example, the control unit 12 can determine the target temperature as the control objective based on a temperature curve. The control unit 12 can use PID to control the power supplied to the heaters 18 and 24, which is a feedback control method based on the difference between the temperature of the heaters 18 and 24 and the target temperature, the integral value of the difference over time, and the derivative value of the difference over time.

[0105] According to one embodiment, the control unit 12 can determine the target power as a control objective based on the power curve. Over time, the control unit 12 can control the power supplied to the heaters 18 and 24 to correspond to the preset target power.

[0106] According to one embodiment, the control unit 12 can detect user suction by sensing the power supplied to the heaters 18 and 24. More specifically, the control unit 12 can use a PID control method to control the power supplied to the heaters 18 and 24. When a user performs suction, a temporary temperature drop may occur in the space where the aerosol-generating article is inserted (hereinafter referred to as the insertion space), the heaters 18 and 24, etc. Therefore, during the PID power control, the power (or current) supplied to the heaters 18 and 24 may change. The control unit 12 can detect user suction based on the controlled power change.

[0107] According to one embodiment, the control unit 12 can prevent the heaters 18 and 24 from overheating. For example, the control unit 12 can control the operation of the power conversion circuit based on the temperature of the heaters 18 and 24 exceeding a preset limit temperature, so as to reduce the power supplied to the heaters 18 and 24 or interrupt the power supply to the heaters 18 and 24.

[0108] According to one embodiment, the control unit 12 can control the charging / discharging of the power supply 11. For example, the control unit 12 can use a temperature sensor (e.g., sensor unit 13) to determine the temperature of the power supply 11. When the temperature of the power supply 11 exceeds a first limit temperature, the control unit 12 can cut off the charging of the power supply 11. When the temperature of the power supply 11 exceeds a second limit temperature, the control unit 12 can interrupt the use of the power stored in the power supply 11 (e.g., discharging). The control unit 12 can calculate the remaining capacity of the power stored in the power supply 11. For example, the control unit 12 can calculate the remaining capacity of the power supply 11 based on the voltage and / or current detection values ​​of the power supply 11.

[0109] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on the results sensed by the sensor unit 13.

[0110] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on the insertion and / or removal of the aerosol-generating article relative to the insertion space. For example, if the insertion sensing sensor (e.g., sensor unit 13) determines that the aerosol-generating article has been inserted into the insertion space, the control unit 12 can control the supply of power to the heaters 18 and 24. If the insertion sensing sensor (e.g., sensor unit 13) determines that the aerosol-generating article has been removed from the insertion space, the control unit 12 can cut off the power supply to the heaters 18 and 24. If the temperature of the heaters 18 and 24 is above a limit temperature or the temperature change slope of the heaters 18 and 24 is above a set slope, the control unit 12 can determine that the aerosol-generating article has been removed from the insertion space.

[0111] According to one embodiment, the control unit 12 can control the power supply time and / or power supply amount to the heaters 18 and 24 based on the state of the aerosol generating article. For example, if the aerosol generating article is determined to be in an over-humidity state by using an over-humidity sensing sensor (e.g., sensor unit 13), the control unit 12 can increase the power supply time (e.g., preheating time) to the heaters 18 and 24.

[0112] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on whether the aerosol-generating article has been reused. For example, if the control unit 12 determines that the aerosol-generating article has been used, it can cut off the power supply to the heaters 18 and 24.

[0113] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on whether the cartridge is attached and / or removed. For example, if the cartridge sensing sensor (e.g., sensor unit 13) determines that the cartridge is in a separated state, the control unit 12 can control the interruption of the power supply to the heaters 18 and 24 or prevent the supply of power to the heaters 18 and 24.

[0114] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on whether the aerosol-generating material of the cartridge has been depleted. For example, if the control unit 12 determines that the temperature of the heaters 18 and 24 exceeds a limit temperature during the preheating period (i.e., the preheating interval), it can determine that the aerosol-generating material of the cartridge has been depleted. In the case that the aerosol-generating material of the cartridge has been depleted, the control unit 12 can cut off the power supply to the heaters 18 and 24.

[0115] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on whether the e-cigarette cartridge is available. For example, if the control unit 12 determines, based on data stored in the memory 17, that the current number of puffs exceeds the maximum number of puffs set for the e-cigarette cartridge, it can determine that the e-cigarette cartridge cannot be used. Alternatively, the control unit 12 can determine that the e-cigarette cartridge cannot be used if the total heating time of the heaters 18 and 24 exceeds a preset maximum time or if the total electrical power supplied to the heaters 18 and 24 exceeds a preset maximum electrical power. In this case, the control unit 12 can control the power supply to the heaters 18 and 24 to be interrupted or not to be supplied with power.

[0116] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on the user's suction. For example, the control unit 12 can use a suction sensor (e.g., sensor unit 13) to determine whether suction has occurred and / or the intensity of suction. If the number of suctions has reached a preset maximum number of suctions and / or no suction is detected for a preset time, the control unit 12 can cut off the power supply to the heaters 18 and 24. When suction is sensed, the control unit 12 can control the power supply to the heaters 18 and 24.

[0117] According to one embodiment, the control unit 12 can control the power supply to the heaters 18 and 24 based on whether the aerosol-generating article (or cartridge) is genuine and / or its type. For example, the control unit 12 can use a cigarette identification sensor (e.g., sensor unit 13) to detect whether the aerosol-generating article is genuine and / or its type. As an example, if the aerosol-generating article (or cartridge) is detected to be counterfeit, the control unit 12 can cut off the power supply to the heaters 18 and 24. If the aerosol-generating article (or cartridge) is detected to be genuine, the control unit 12 can control (e.g., start) the power supply to the heaters 18 and 24. As another example, the control unit 12 can control the power supply to the heaters 18 and 24 in different ways depending on the type of aerosol-generating article (or cartridge). More specifically, if the aerosol generating article (or cartridge) is detected as a first aerosol generating article (or first cartridge), the control unit 12 can control the temperature and / or power of the heaters 18 and 24 based on a first temperature curve (or first power curve). If the aerosol generating article (or cartridge) is detected as a second aerosol generating article (or second cartridge), the control unit 12 can control the temperature and / or power of the heaters 18 and 24 based on a second temperature curve (or second power curve).

[0118] According to one embodiment, the control unit 12 can control the output unit 14 based on the results sensed by the sensor unit 13. For example, if the number of suctions counted by the suction sensor (e.g., sensor unit 13) reaches a preset number, the control unit 12 can control the output unit 14 to provide information that the aerosol generating device 1 is about to end its operation in a visual, tactile, and / or audible manner. For example, the control unit 12 can control the output unit 14 to provide information about the temperature of the heaters 18 and 24 in a visual, tactile, and / or audible manner.

[0119] According to one embodiment, the control unit 12 can store and update the history of events that have occurred in the memory 17 based on the occurrence of predetermined events. For example, events may include operations performed in the aerosol generating apparatus 1 such as sensing the insertion of an aerosol generating article, starting heating of the aerosol generating article, sensing suction, ending suction, sensing overheating of heaters 18 and 24, sensing overvoltage applied to heaters 18 and 24, ending heating of the aerosol generating article, turning the power supply of the aerosol generating apparatus 1 on / off, starting charging of the power supply 11, sensing overcharging of the power supply 11, and ending charging of the power supply 11. For example, the history of events may include the date and time of the event, log data corresponding to the event, etc. For example, if the predetermined event is sensing the insertion of an aerosol generating article, the log data corresponding to the event may include data such as the sensing value of the insertion sensing sensor (e.g., sensor unit 13). For example, if the predetermined event is the sensing of overheating of heaters 18 and 24, the log data corresponding to the event may include data about the temperature of heaters 18 and 24, the voltage applied to heaters 18 and 24, the current flowing in heaters 18 and 24, etc.

[0120] According to one embodiment, the control unit 12 can control the communication unit 16 to form a communication link with an external device such as a user's mobile terminal.

[0121] According to one embodiment, if authentication data is received from an external device via a communication link, the control unit 12 can remove usage restrictions on at least one function of the aerosol generating device 1 (e.g., heating function). For example, the authentication data may include the user's birthday, a unique phone number representing the user, and whether the user has completed authentication.

[0122] According to one embodiment, the control unit 12 can send data about the status of the aerosol generating device 1 (e.g., remaining capacity of the power supply 11, operating mode, etc.) to an external device via a communication link. The sent data can be output through a display or the like on the external device.

[0123] According to one embodiment, if a location search request for the aerosol generating device 1 is received from an external device via a communication link, the control unit 12 can control the output unit 14 to perform an operation corresponding to the location search. For example, the control unit 12 can control the tactile unit to vibrate, or control the display to output objects corresponding to the location search and the end of the search.

[0124] According to one embodiment, if firmware data is received from an external device via a communication link, the control unit 12 can perform a firmware update.

[0125] According to one embodiment, the control unit 12 can send data about the detection values ​​of at least one sensor unit 13 to an external server (not shown) via a communication link, and can receive and store a learning model generated by learning the detection values ​​through machine learning such as deep learning from the server. The control unit 12 can use the learning model received from the server to perform operations such as determining the user's inhalation pattern and generating a temperature curve.

[0126] Although Figure 1 Although not shown, the aerosol generating device 1 may also include a power protection circuit. The power protection circuit may include at least one switching element and may disconnect the power supply 11 in response to overcharging and / or over-discharging. The aerosol generating device 1 may also include a connection interface such as a universal serial bus (USB) interface, and may be connected to other external devices via the connection interface to send and receive information or charge the power supply 11.

[0127] The aerosol generating article mentioned in this disclosure may include at least one aerosol generating rod (e.g., a medium section) and at least one filter rod. The heater 18 may be arranged corresponding to at least one aerosol generating rod and may be designed differently depending on the arrangement and / or position of the aerosol generating rod and the filter rod. The aerosol generating rod may contain at least one of nicotine, an aerosol generating substance, and additives. For example, the aerosol generating substance may contain glycerin (e.g., vegetable glycerin (VG)) and / or propylene glycol (PG), or may contain a variety of other substances. For example, the additive may contain flavoring agents and / or organic acids, or may contain a variety of other substances. For example, the aerosol generating rod may contain an aerosol generating substrate (e.g., a sheet) impregnated with a liquid non-tobacco substance (e.g., the aerosol generating substance and / or nicotine), and / or may contain solid tobacco substances (e.g., tobacco leaves, reconstituted tobacco, etc.). Tobacco substances can be contained in the aerosol generating rod in various forms such as shreds, granules, and powder. According to one embodiment, the additives in the aerosol generating rod may contain an alkaline substance. Based on the alkaline substance, the nicotine in the tobacco substances contained in the aerosol generating rod can have an alkaline pH value (e.g., pH 7.0 or higher). In this case, the aerosol generating rod can release free base nicotine even at lower temperatures. According to one embodiment, the aerosol generating rod may comprise two or more aerosol generating rods, and the two or more aerosol generating rods may each contain tobacco substances and / or non-tobacco substances. Additionally, although not shown, at least one aerosol generating rod and at least one filter rod may each be wrapped by at least one wrapper, and / or wrapped together by at least one wrapper. In this disclosure, the aerosol generating article may also be referred to as a stick.

[0128] The cartridge mentioned in this disclosure may contain an aerosol-generating substance in any of the following states: liquid, solid, gaseous, or gel. The aerosol-generating substance may comprise a liquid composition. For example, the liquid composition may be a liquid containing substances found in tobacco (including volatile tobacco flavor components) or a liquid containing non-tobacco substances. Additionally, the cartridge may include a storage section for containing the aerosol-generating substance and / or a liquid delivery member for impregnating (containing) the aerosol-generating substance. For example, the liquid delivery member may include a core material such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic. The cartridge heater 24 may be included in the cartridge in the form of a coil surrounding (or winding) the liquid delivery member or in a structure contacting one side of the liquid delivery member. Alternatively, the cartridge heater 24 may also be included in an aerosol-generating device 1 that can be separated from the cartridge.

[0129] Figure 2a An aerosol generating apparatus 1 according to one embodiment is shown. Figure 2b An aerosol generating apparatus 1 according to one embodiment is shown.

[0130] According to one embodiment, the aerosol generating device 1 may include a housing 10, a power supply 11, a control unit 12, a sensor unit 13, and / or heaters 182, 183 (e.g., Figure 1 (The heater 18). However, those skilled in the art will understand that the components of the aerosol generating apparatus 1 are not limited to those described in this embodiment. Figure 2a or Figure 2b The constituent elements shown can be omitted or new constituent elements can be added. Figure 2a The aerosol generating device 1 shown can be referred to as an "internal heating type" aerosol generating device that heats the inside of the aerosol generating article 2. Figure 2b The aerosol generating device 1 shown can be referred to as an "externally heated" aerosol generating device that heats the outside of the aerosol generating article 2. In the following figures, details related to... Figure 1 Repeated explanation.

[0131] According to one embodiment, the housing 10 may provide an upwardly opening space for insertion of the aerosol generating article 2. In this disclosure, the upwardly opening space may be referred to as an insertion space. The insertion space may be recessed into the interior of the housing 10 to a predetermined depth to allow insertion of at least a portion of the aerosol generating article 2. The depth of the insertion space may be greater than the length of the region of the aerosol generating article 2 containing the aerosol generating substance and / or medium. The lower end of the aerosol generating article 2 may be inserted into the interior of the housing 10, and the upper end of the aerosol generating article 2 may protrude outward from the housing 10. A user may hold the exposed upper end of the aerosol generating article 2 in their mouth and inhale the aerosol.

[0132] According to one embodiment, heaters 182 and 183 can heat the aerosol-generated article 2.

[0133] Reference Figure 2a Heater 182 can be an internal heating type heater.

[0134] The heater 182 is an example of an aerosol generator for generating aerosols from the aerosol generating article 2. The aerosol generator may include: a receiving portion 102p, including an insertion space for receiving the aerosol generating article 2; and a heater 182, disposed in the receiving portion 102p and generating heat for heating the aerosol generating article 2.

[0135] According to one embodiment, the internally heated heater can extend relatively far upward within the space (i.e., the insertion space) into which the aerosol-generating article 2 is inserted. For example, as shown, the internally heated heater can include rod-shaped or needle-shaped heating elements, but can also include various heating elements such as tubular or plate-shaped heating elements. The internally heated heater can be inserted through the lower part of the aerosol-generating article 2.

[0136] According to one embodiment, an internally heated heater may include a resistance heater and / or an induction heater.

[0137] For example, the resistance heater may include a resistive material on its inner side (e.g., an internal hollow or inner surface) or outer side (e.g., an outer surface), and can be heated as an electric current flows through the resistive material. In this case, the resistance heater may be electrically connected to the power supply 11 and can be heated directly by receiving current from the power supply 11. Furthermore, the induction coil 181 may be omitted.

[0138] For example, for an induction heating heater, the aerosol generating device 1 may include an induction coil 181 surrounding at least a portion of an internal heating type heater (e.g., arranged externally in a manner corresponding to at least a portion of the heater's length). In this case, to improve the efficiency of induction heating, a magnetic flux concentrator or similar device may also be included outside the induction coil 181. The induction heating heater may include an induction heating element (susceptor) and may generate heat based on a magnetic field generated from the induction coil 181. According to one embodiment, the induction heating heater (e.g., an induction heating element) (or a heater module including it) may be arranged to be detachable from the housing 10.

[0139] According to one embodiment, heater 182 can also be a multiple heater. The multiple heaters may include a first heater and a second heater, and can be inserted into the aerosol generating article 2. The first and second heaters can be arranged side-by-side along the length direction. The first and second heaters can operate as resistance heaters and / or induction heaters, and can be heated sequentially or simultaneously. In this case, the first and second heaters can be arranged respectively at positions corresponding to the length directions of two or more aerosol generating rods. Alternatively, the first and second heaters can also be arranged respectively at positions corresponding to the length directions of a first and second part of an aerosol generating rod. Furthermore, when heater 182 is an induction heater, the aerosol generating device 1 may include a first induction coil and a second induction coil, which can also be arranged respectively at positions corresponding to the length directions of the first and second heaters. Alternatively, the first and second heaters can also be arranged respectively at positions corresponding to the length directions of a first and second part of a heater 182. In addition, heaters and / or induction coils may include three or more.

[0140] According to one embodiment, the induction heating element is arranged (or contained) inside the aerosol generating article 2 (e.g., the medium section), and can be implemented to heat the induction heating element contained inside the aerosol generating article 2 based on the magnetic field generated from the induction coil 181.

[0141] The aerosol generating apparatus 1 includes a potential difference sensor 131, which generates a signal based on changes in the composition of the aerosol generated by the heater 182, which serves as an aerosol generator. The potential difference sensor 131 can be disposed on the outside of the aerosol generating article 2. The potential difference sensor 131 is positioned adjacent to the end of the aerosol generating article 2 housed in the receiving portion 102p.

[0142] A channel can be formed through the space between the aerosol generating article 2 contained in the containment portion 102p and the inner surface 102s of the containment portion 102p. The aerosol generated by the aerosol generator can flow along at least a portion of the channel.

[0143] The potential difference sensor 131 can detect changes in the composition of the aerosol flowing through the channel. The potential difference sensor 131 can generate a signal based on the change in potential difference caused by the change in the composition of the aerosol generated by the aerosol generating article 2 heated by the heater 182.

[0144] The potential difference sensor 131 is used to detect the composition of the aerosol, such as nicotine or the pH concentration (hydrogen ion concentration) of droplets included in the aerosol.

[0145] Reference Figure 2b Heater 183 can be an external heating type heater.

[0146] Heater 183 is another example of an aerosol generator used to generate aerosols from aerosol generating article 2.

[0147] According to one embodiment, the externally heated heater can extend upwardly and relatively long around the space where the aerosol generating article 2 is inserted (i.e., the insertion space). For example, the externally heated heater can be arranged to surround at least a portion of the insertion space. As an example, the externally heated heater can include a tubular shape (e.g., cylindrical) with a hollow interior. The externally heated heater can also include a shape with a hollow interior that surrounds the hollow space. In this case, the externally heated heater can be supported by a polyimide film. A heater supported by such a film can be referred to as a film heater. The externally heated heater can be arranged to surround at least a portion of the insertion space. The externally heated heater is capable of heating the outside of the aerosol generating article 2 inserted into the hollow space.

[0148] According to one embodiment, the external heating type heater may include a resistance heater and / or an induction heater, and the terms related to... will be omitted. Figure 2aTo reiterate. Furthermore, for induction heating heaters, the aerosol generating apparatus 1 may include an external heating type heater formed by a tubular induction heating element, and may include an induction coil 181 surrounding at least a portion of the external heating type heater (e.g., arranged externally in a manner corresponding to at least a portion of the heater's length). Additionally, the induction coil 181 may also include a fan coil. Furthermore, if the external heating type heater is a resistance heater, since heating can be achieved by current flowing through the tubular resistance heater (e.g., a thin-film heater), a separate induction coil 181 can be omitted. Additionally, insulating material may be arranged externally to the external heating type heater. This reduces the heat dissipated from the heater 183 in the radially outward direction and applied to the outside of the housing 10.

[0149] According to one embodiment, heater 183 can be multiple heaters, with the first and second heaters arranged side-by-side along the length direction and each surrounding at least a portion of the insertion space. The first and second heaters can operate as resistance heaters and / or induction heaters, and can be heated sequentially or simultaneously. Alternatively, when heater 183 is an induction heater, the aerosol generating device 1 can include a first induction coil and a second induction coil, which can be arranged respectively at positions corresponding to the length directions of the first and second heaters. Alternatively, the first and second heaters can also be arranged respectively at positions corresponding to the length directions of a first and a second portion of heater 183.

[0150] and Figure 2a or Figure 2b The situation shown is different, Figure 2a heater 182 and Figure 2b The heater 183 can be included in the aerosol generating apparatus 1. In this case, the heater 182 can heat the inside of the aerosol generating article 2, and the heater 183 can heat the outside of the aerosol generating article 2.

[0151] According to one embodiment, an airflow channel for air circulation can be provided in the aerosol generating apparatus 1. For example, the housing 10 may include a structure (e.g., a hole) that allows air to flow from the outside into the interior of the housing 10. The air flowing into the interior of the housing 10 can enter the aerosol generating article 2 through its lower end (i.e., upstream side). The aerosol generated by heating the aerosol generating article 2 can be inhaled into the user's mouth along with the inflowing air through its upper end (i.e., downstream side).

[0152] The aerosol generating apparatus 1 includes a potential difference sensor 131, which generates a signal based on changes in the composition of the aerosol generated by the heater 183, which serves as an aerosol generator. The potential difference sensor 131 may be disposed on the outside of the aerosol generating article 2. The potential difference sensor 131 is positioned adjacent to the end of the aerosol generating article 2 housed in the aerosol generating apparatus 1.

[0153] The space on the outer surface of the aerosol-generating item 2 can form a channel. The aerosol generated by the aerosol generator can flow along at least a portion of the channel.

[0154] The potential difference sensor 131 can detect changes in the composition of the aerosol flowing through the channel. The potential difference sensor 131 can generate a signal based on the change in potential difference caused by the change in the composition of the aerosol generated by the aerosol generating article 2 heated by the heater 182.

[0155] The potential difference sensor 131 is used to detect the composition of the aerosol, such as nicotine or the pH concentration (hydrogen ion concentration) of droplets included in the aerosol.

[0156] Figure 3 An aerosol generating apparatus 1 according to one embodiment is shown. According to one embodiment, the aerosol generating apparatus 1 may include a housing 10, a power supply 11, a control unit 12, and / or a sensor unit 13. However, those skilled in the art will understand that the constituent elements of the aerosol generating apparatus 1 are not limited to those described herein. Figure 3 The constituent elements shown may be partially omitted, or new constituent elements may be added. In the following figures, the omissions and... Figure 1 Repeated explanation.

[0157] According to one embodiment, the housing 10 may include a structure on one side for inserting or mounting the cartridge 19. In this case, the cartridge 19 can be detachably coupled to the housing 10.

[0158] Although not shown, the housing 10 and / or cartridge 19 may include a mouthpiece. The user can hold the mouthpiece in their mouth and inhale the aerosol.

[0159] According to one embodiment, the cartridge 19 may include a chamber C0 containing an aerosol-generating substance. The chamber C0 may contain the aerosol-generating substance in any of the following states: liquid, solid, gaseous, or gel. The aerosol-generating substance may comprise a liquid composition. For example, the liquid composition may be a liquid containing substances found in tobacco (including volatile tobacco flavor components) or a liquid containing non-tobacco substances.

[0160] According to one embodiment, a liquid delivery member 25 impregnated with (containing) aerosol-generating material may be included in the cartridge 19. For example, the liquid delivery member 25 may be impregnated with aerosol-generating material supplied from chamber C0. The liquid delivery member 25 may include a core material such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic. Although not shown, the aerosol generating device 1 may also include a liquid delivery member. In this case, at least a portion of the first liquid delivery member of the cartridge 19 may be in contact with at least a portion of the second liquid delivery member of the aerosol generating device 1. In this case, the first and second liquid delivery members may be implemented in different forms. For example, the first liquid delivery member may include cotton fiber, and the second liquid delivery member may include porous ceramic. Alternatively, the cartridge 19 may not include a liquid delivery member, and the aerosol-generating material of the cartridge 19 may be transferred to the liquid delivery member of the aerosol generating device 1.

[0161] According to one embodiment, an airflow channel for airflow can be provided in the housing 10 and / or the smoke cartridge 19.

[0162] For example, the housing 10 may include a structure that allows external air to flow into the interior of the housing 10 when the cartridge 19 is attached. As an example, an air inlet that allows external air to flow into the interior of the housing 10 may be formed on one side surface of the housing 10. The air inlet may also be formed on the lower end surface of the housing 10. External air flowing into the interior of the housing 10 through the air inlet may pass through the cartridge 19 and then flow toward the user's mouth through the airflow channel 30.

[0163] For example, an airflow channel 30 may be included in the cartridge 19. The airflow channel 30 can connect the chamber (e.g., atomizing chamber) where the cartridge heater 24 or liquid delivery member 25 is disposed to the housing 10 and / or the exterior of the cartridge 19. More specifically, one end of the airflow channel 30 may open into the chamber (e.g., atomizing chamber) where the cartridge heater 24 or liquid delivery member 25 is disposed, and the other end may communicate with a mouthpiece. The airflow channel 30 may extend lengthwise along the length of the cartridge 19 on one side of the chamber C0 of the cartridge 19. The airflow channel 30 may also pass through the chamber C0 of the cartridge 19 and extend lengthwise along the length of the cartridge 19. The airflow channel 30 may also communicate with a mouthpiece separately disposed in the housing 10.

[0164] According to one embodiment, the cartridge heater 24 can heat the aerosol generating material contained in the cartridge 19. For example, the cartridge heater 24 may include a resistance heater and / or an induction heater. As an example, the resistance heater may include a resistive material and can be heated as an electric current flows through it. As another example, for an induction heater, the aerosol generating device 1 may also include an induction coil (not shown) around the periphery of the induction heater. The induction heater may include an induction heating element (susceptor) and can generate heat based on a magnetic field generated from the induction coil (not shown). The cartridge heater 24 can be formed in a coil shape that surrounds (or wraps around) the cartridge 19 and / or the liquid delivery member included in the aerosol generating device 1 and / or in a shape that contacts one side of the liquid delivery member (e.g., a patterned shape).

[0165] According to one embodiment, the cartridge heater 24 may be included in the cartridge 19. When the cartridge 19 is detachable from the housing 10, the cartridge heater 24 may be detached from the aerosol generating device 1 together with the cartridge 19. Unlike the case shown in the figures, the cartridge heater 24 may be included within the aerosol generating device 1. For example, the cartridge heater 24 may be included inside the housing 10. Alternatively, the cartridge heater 24 may be implemented as being detachable from the housing 10 separately (i.e., independently) from the cartridge 19. In other words, the cartridge heater 24 may or may not be detachable from the housing 10, regardless of whether the cartridge 19 is detached from the housing 10.

[0166] According to one embodiment, an aerosol can be generated based on the heating of the cartridge heater 24. As the liquid delivery member 25 is heated by the cartridge heater 24, an aerosol can be generated. For example, as the aerosol-generating material impregnated in the liquid delivery member 25 is heated by the cartridge heater 24, vapor can be generated from the aerosol-generating material, and as the generated vapor mixes with external air flowing into the cartridge 19, an aerosol can be generated. The aerosol generated by the cartridge heater 24 can be inhaled into the user's mouth through the airflow channel 30.

[0167] According to one embodiment, the cartridge 19 may be integrally formed with the aerosol generating device 1 (e.g., housing 10). The cartridge 19 may be configured such that the user cannot detach it from the aerosol generating device 1. Even in this case, the cartridge 19 and / or the aerosol generating device 1 may include at least one liquid delivery member 25, which is heated based on the cartridge heater 24 included in the aerosol generating device 1 or the cartridge 19 to generate an aerosol, and the generated aerosol can be inhaled into the user's mouth through the airflow channel 30.

[0168] The cartridge heater 24 and the liquid delivery device 25 are another example of an aerosol generator. An aerosol generator may include an aerosol generation chamber C1 for generating aerosols. At least one of the cartridge heater 24 and the liquid delivery device 25 may be located in the aerosol generation chamber C1.

[0169] The aerosol generating device 1 includes a channel 30. The channel 30 can extend relatively long along the length of the aerosol generating device 1. One end of the channel 30 is connected to the aerosol generating chamber C1, and the other end of the channel 30 opens to the outside. The aerosol generated by the aerosol generator can be discharged to the outside through the channel 30.

[0170] The aerosol generating device 1 includes a potential difference sensor 131, which generates a signal based on changes in the composition of the aerosol generated by the cartridge heater 24. At least a portion of the potential difference sensor 131 may be configured in channel 30.

[0171] The aerosol generated by the aerosol generator can flow along channel 30. A potential difference sensor 131 can detect changes in the composition of the aerosol flowing along channel 30. The potential difference sensor 131 can change the potential difference based on the changes in the composition of the aerosol generated in the aerosol generation chamber C1, thereby generating a signal.

[0172] The potential difference sensor 131 is used to detect the composition of the aerosol, such as nicotine or the pH concentration of droplets included in the aerosol.

[0173] Figure 4An aerosol generating apparatus 1 is shown as yet another embodiment.

[0174] According to one embodiment, the aerosol generating device 1 may include a housing 10, a power supply 11, a control unit 12, a sensor unit 13, and / or heaters 183, 24 (e.g., Figure 1 (Heats 18, 24). However, those skilled in the art will understand that the components of the aerosol generating apparatus 1 are not limited to those described in this embodiment. Figure 4 The constituent elements shown may be partially omitted, or new constituent elements may be added. In the following figures, those omitted and... Figure 1 Repeated explanation.

[0175] According to one embodiment, the housing 10 may provide an upwardly opening space (hereinafter referred to as an insertion space) for inserting the aerosol generating article 2. The insertion space may be recessed into the interior of the housing 10 to a predetermined depth to allow at least a portion of the aerosol generating article 2 to be inserted. The lower end of the aerosol generating article 2 may be inserted into the interior of the housing 10, and the upper end of the aerosol generating article 2 may protrude outward from the housing 10.

[0176] Unlike the case shown in the attached figures, the cartridge 19 may also provide an insertion space for accommodating the aerosol generating article 2. In this case, the insertion space may be recessed into the interior of the cartridge 19 to a predetermined depth, allowing at least a portion of the aerosol generating article 2 to be inserted. The lower end of the aerosol generating article 2 may be inserted into the interior of the cartridge 19, while the upper end of the aerosol generating article 2 may protrude outward from the cartridge 19. Furthermore, in this case, the aerosol generating device 1 may not include the heater 183.

[0177] According to one embodiment, the depth of the insertion space can be greater than the length of the region of the aerosol generating article 2 containing the aerosol generating substance and / or medium. The user can hold the exposed upper end of the aerosol generating article 2 in their mouth and inhale air.

[0178] According to one embodiment, heater 183 can heat aerosol generating article 2. Heater 183 can extend relatively long upwards around the periphery of the space into which aerosol generating article 2 is inserted (i.e., the insertion space). As an example, heater 183 can be a tubular shape (e.g., cylindrical) with a hollow interior. Heater 183 can also include a shape with a hollow interior that encloses the hollow space. In this case, heater 183 can be supported by a polyimide film. A heater supported by such a film can be referred to as a film heater. Heater 183 can be arranged to surround at least a portion of the insertion space. Heater 183 can heat the outside of the hollow aerosol generating article 2 inserted therein. In this disclosure, heater 183 can be referred to as an external heating type heater that heats the outside of the aerosol generating article 2. Additionally, an insulating material can also be arranged on the outside of heater 183. This reduces the heat dissipated from heater 183 in a radially outward direction and applied to the outside of housing 10.

[0179] According to one embodiment, heater 183 may include a resistance heater and / or an induction heater.

[0180] For example, a resistance heater may include a resistive material and can be heated as an electric current flows through it. In this case, the resistance heater may be electrically connected to power source 11 and can be heated directly by receiving current from power source 11.

[0181] For example, for an induction heating heater, the aerosol generating device 1 may further include an induction coil (not shown) surrounding at least a portion of the heater 183 (e.g., arranged externally in a manner corresponding to at least a portion of the length of the heater 183). In this case, to improve the efficiency of induction heating, a magnetic flux concentrator or the like may also be included outside the induction coil (not shown). The induction heating heater may include an induction heating element (susceptor) and may generate heat based on a magnetic field generated from the induction coil (not shown).

[0182] According to one embodiment, heater 183 can also be a multiple heater. The multiple heaters may include a first heater and a second heater, and can be inserted into the aerosol generating article 2. The first and second heaters can be arranged side-by-side along the length direction. The first and second heaters can operate as resistance heaters and / or induction heaters, and can be heated sequentially or simultaneously. In this case, the first and second heaters can be arranged respectively at positions corresponding to the length directions of two or more aerosol generating rods. Alternatively, the first and second heaters can also be arranged respectively at positions corresponding to the length directions of a first and second part of an aerosol generating rod. Furthermore, when heater 183 is an induction heater, the aerosol generating device 1 may include a first induction coil and a second induction coil, which can also be arranged respectively at positions corresponding to the length directions of the first and second heaters. Alternatively, the first and second heaters can also be arranged respectively at positions corresponding to the length directions of a first and second part of a heater 183. In addition, heaters and / or induction coils may include three or more.

[0183] Unlike the case shown in the attached diagram, the aerosol generating device 1 may also exclude the heater 183. The aerosol generating article 2 may be directly or indirectly heated by the cartridge heater 24, or substantially unheated. Indirect heating means that the aerosol generating article 2 receives heat contained within the aerosol as it passes through the cartridge heater 24. In this case, the aerosol generating device 1 may be referred to as a non-heating (or, indirectly heated) aerosol generating device. The aerosol generating rod of the aerosol generating article 2 may contain additives such as alkaline substances. Based on this alkaline substance, the nicotine contained in the aerosol generating rod may have an alkaline pH (e.g., pH 7.0 or higher). This alkaline nicotine can flow into the user's mouth along with the aerosol flowing from the cartridge 19 into the aerosol generating article 2, as described later.

[0184] Unlike the case shown in the attached figures, heater 183 may also include an internally heated type heater. For example, an internally heated type heater may include various heating elements such as rod-type, tubular-type, plate-type, or needle-type heating elements. The internally heated type heater can be inserted through the lower part of the aerosol generating article 2 and can be configured to heat the inner side of the aerosol generating article 2.

[0185] According to one embodiment, the cartridge 19 can be detachably attached to the housing 10. For example, a space can be formed on one side of the housing 10, and at least a portion of the cartridge 19 can be inserted into the space formed on one side of the housing 10, so that the cartridge 19 can be installed in the housing 10. Alternatively, the cartridge 19 can be integrally formed with the housing 10.

[0186] According to one embodiment, an airflow channel for air circulation can be provided in the aerosol generating device 1 and / or the cartridge 19. For example, the housing 10 may include a structure that allows air to flow from the outside into the interior of the housing 10 when the cartridge 19 is inserted. The inflowing air can pass through the cartridge 19 and flow into the insertion space through the airflow channel 30, and can flow into the user's mouth. The airflow channel 30 may also include various structures for reducing residual droplets or promoting airflow.

[0187] exist Figure 4 Although the illustration shows the cartridge 19 positioned to the side relative to the aerosol generating article 2 and the airflow channel 30 forming from the side surface of the aerosol generating article 2 toward the lower end (i.e., the upstream side) of the aerosol generating article 2, the positions of the cartridge 19 and the airflow channel 30 are not limited to this. For example, the cartridge 19 may be positioned adjacent to the lower end (i.e., the upstream side) of the aerosol generating article 2, and in this case, the airflow channel 30 may be formed substantially in a straight line to connect the cartridge 19 to the lower end (i.e., the upstream side) of the aerosol generating article 2.

[0188] According to one embodiment, the cartridge 19 may include a storage section C0 containing aerosol-generating material, a cartridge heater 24, and / or a liquid delivery member impregnated with (containing) aerosol-generating material. The liquid delivery member is capable of being impregnated with aerosol-generating material supplied from the chamber C0. For example, the liquid delivery member may include a core material such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0189] According to one embodiment, the cartridge heater 24 can heat the aerosol-generating material contained in the cartridge 19. For example, the cartridge heater 24 may include a resistance heater and / or an induction heater.

[0190] As an example, a resistance heater may include a resistive material and can be heated as an electric current flows through it. As another example, for an induction heater, the aerosol generating device 1 may also include an induction coil (not shown) around the periphery of the induction heater. The induction heater may include an induction heating element and can generate heat based on a magnetic field generated from the induction coil (not shown). The cartridge heater 24 can be formed in a coil configuration surrounding (or winding around) the liquid delivery member and / or in contact with one side of the liquid delivery member (e.g., a patterned shape).

[0191] Unlike the case shown in the attached figures, the cartridge heater 24 may also be included in the aerosol generating device 1. For example, the cartridge heater 24 may be included inside the housing 10. In this case, the cartridge 19 can be separated from the cartridge heater 24 by removing the cartridge 19.

[0192] According to one embodiment, an aerosol can be generated based on the heating of the cartridge heater 24. For example, as the aerosol generating material impregnated in the liquid delivery member is heated by the cartridge heater 24, vapor can be generated from the aerosol generating material, and as the generated vapor mixes with external air flowing into the cartridge 19, an aerosol can be generated. The aerosol generated by the cartridge heater 24 can flow into the aerosol generating article 2 through the airflow channel 30. As the aerosol passes through the aerosol generating article 2, tobacco or flavoring substances can be added to the aerosol, and the aerosol with added tobacco or flavoring substances can be inhaled into the user's mouth through one end of the aerosol generating article 2.

[0193] The cartridge heater 24 can be an example of an aerosol generator. The aerosol generated by the cartridge heater 24 can flow along the channel 30. The aerosol generating device 1 includes a potential difference sensor 131a for generating a signal based on changes in the composition of the aerosol generated by the cartridge heater 24.

[0194] The potential difference sensor 131a can detect changes in the composition of the aerosol flowing along the channel 30. The potential difference sensor 131a can change the potential difference according to the changes in the composition of the aerosol generated by the cartridge heater 24, thereby generating a signal.

[0195] Heater 183 can be another example of an aerosol generator. Heater 183 can generate aerosols by heating aerosol generating item 2.

[0196] The aerosol generating apparatus 1 includes a potential difference sensor 131b for generating a signal based on the compositional changes of the aerosol generated by the aerosol generating article 2 heated by the heater 183.

[0197] The potential difference sensor 131b can be disposed on the outside of the aerosol generating article 2. The potential difference sensor 131b is disposed adjacent to the end of the aerosol generating article 2 housed in the aerosol generating device 1.

[0198] The space on the outer surface of the aerosol generating article 2 can be formed with additional channels. The aerosol generated by the aerosol generating article 2 can flow along at least a portion of the additional channels. For example, when a user holds and inhales the aerosol generating article 2, a mainstream smoke stream of aerosols can be formed through the aerosol generating article 2, and a side stream of aerosols flowing along the outer surface of the aerosol generating article 2 can be formed.

[0199] The potential difference sensor 131b can detect changes in the composition of aerosol flowing through an additional channel on the outer surface of the aerosol generating article 2. The potential difference sensor 131b can generate a signal based on the change in potential difference caused by the change in the composition of the aerosol generated by the aerosol generating article 2 heated by the heater 182.

[0200] Figure 5 This is a cross-sectional view along the length of the aerosol generating apparatus 1 according to another embodiment.

[0201] according to Figure 5 The aerosol generating apparatus 1 of the illustrated embodiment includes: an aerosol generator for generating aerosols; and a potential difference sensor 130 for generating a signal based on a potential difference that changes with the composition of the aerosols generated by the aerosol generator.

[0202] The aerosol generator includes: an aerosol generation chamber C1 for generating aerosols; a liquid delivery device 25 located inside the aerosol generation chamber C1; and a cartridge heater 24 for generating aerosols by heating the liquid delivery device 25.

[0203] The aerosol generating device 1 includes a channel 31 for discharging aerosols generated by the aerosol generator to the outside. A potential difference sensor 130 is disposed in the channel 31.

[0204] The aerosol generating apparatus 1 may further include: a supply channel 32 for supplying air to the aerosol generator; and an upstream potential difference sensor 230 for generating a signal based on a potential difference that changes with the composition of the aerosol generated by the aerosol generator.

[0205] Air flowing from the outside of the housing 10 into the interior of the aerosol generating device 1 flows into the aerosol generating chamber C1 after passing through the supply channel 32. The aerosol generated in the aerosol generating chamber C1 can fill the aerosol generating chamber C1. Even before the user's inhalation action is performed, at least a portion of the aerosol filling the aerosol generating chamber C1 can move toward the channel 31 and the supply channel 32.

[0206] When a user inhales, the aerosol generated in the aerosol generation chamber C1 flows through the aerosol generator's channel 31 and is discharged to the outside. The user can hold the mouthpiece 10m located at one end of the aerosol generator in their mouth and inhale the aerosol.

[0207] When the aerosol generator operates, the composition of the aerosol may change. Potential difference sensor 130 and upstream potential difference sensor 230 can detect these changes in aerosol composition. For example, the potential difference between potential difference sensor 130 and upstream potential difference sensor 230 changes based on the pH concentration of the aerosol, thereby generating signals for both sensors.

[0208] Potential difference sensor 130 and upstream potential difference sensor 230 may each include a reference electrode and a measuring electrode. For example, the reference electrode and the measuring electrode may be made of any one or a combination of a detection material such as silver chloride or potassium chloride, a glass electrode, indium tin oxide (ITO), or an ion-sensitive field-effect transistor (ISFET).

[0209] In addition, the potential difference sensor 130 and the upstream potential difference sensor 230 may each include a protective material or coating material made of any one or a combination of polycarbonate (PC), polyimide (PI), polyetherimide, or polytetrafluoroethylene (PTFE).

[0210] When each potential difference sensor 130 and the upstream potential difference sensor 230 are exposed to an aerosol, droplets may form on the respective surfaces of the potential difference sensor 130 and the upstream potential difference sensor 230. To generate droplets, the respective surfaces of the potential difference sensor 130 and the upstream potential difference sensor 230 may be maintained at a temperature below the aerosol temperature.

[0211] Due to the compositional changes of the droplets adhering to the surfaces of the potential difference sensor 130 and the upstream potential difference sensor 230, a potential difference that generates an electrical signal can be generated between the reference electrode and the measuring electrode. The potential difference sensor 130 and the upstream potential difference sensor 230 can each generate signals based on the changes in the potential difference between the reference electrode and the measuring electrode. pH concentration can be detected based on the signals from the respective potential difference sensor 130 and the upstream potential difference sensor 230.

[0212] The potential difference sensor 130 and the upstream potential difference sensor 230 may each include either or a combination thereof, of a detection circuit for detecting the generated signal and an amplification circuit for amplifying the signal detected by the detection circuit.

[0213] According to the aerosol generating apparatus of the above embodiment, the potential difference between the potential difference sensor 130 and the upstream potential difference sensor 230 changes according to the change in the composition of the aerosol, thereby generating signals for each of the potential difference sensor 130 and the upstream potential difference sensor 230. Therefore, it is possible to accurately and quickly detect changes in the composition of the aerosol generated by the aerosol generating apparatus 1.

[0214] Figure 6 This is a cross-sectional view along the length of a portion of an aerosol generating apparatus 1 according to another embodiment.

[0215] according to Figure 6 The aerosol generating apparatus 1 of the illustrated embodiment includes: an aerosol generator 241 for generating aerosols; and a potential difference sensor 131 for generating a signal based on a potential difference that changes with the composition of the aerosols generated by the aerosol generator 241. The aerosol generating apparatus 1 may include channels 151, 152, and 153 for supplying external air to the aerosol generator 241.

[0216] Elements such as aerosol generator 241, channels 151, 152, 153, and potential difference sensor 131 can be configured inside housing 10. When cover 104 moves relative to housing 10 and a portion of housing 10 is opened, a portion of the smoke rod S is inserted into housing 10 and the other portion of the smoke rod S is exposed outside housing 10.

[0217] The aerosol generator 241 includes: a housing 102p, including an insertion space 102; and a heater 240, disposed in the housing 102p, which generates heat for heating the smoke rod S.

[0218] The cigarette rod S is heated by heater 240, thereby generating an aerosol. The cigarette rod S can be referred to as a cigarette. The cigarette rod S is an example of an aerosol-generating article.

[0219] "Aerosol" can refer to the vapor generated by heating aerosol-forming substances and mixing it with air, or the gas generated by mixing tiny liquid particles atomized from aerosol-forming substances with air.

[0220] Examples are not limited to Figure 6 The method shown is to generate aerosols by heating the pipe S of the aerosol generator 241. For example, the aerosol generator 241 can generate aerosols by using a heater inserted into the pipe S to generate heat, or by heating a liquid aerosol generating substance, or by generating aerosols from a liquid aerosol generating substance through ultrasonic vibration.

[0221] The user can inhale the aerosol while holding the cigarette holder S protruding from the outer casing 10 in their mouth. This action of inhaling while holding the cigarette holder S in their mouth is called a "sucking action". When the sucking action is performed, an airflow is generated through the cigarette holder S, thereby transferring the aerosol generated by the cigarette holder S to the user.

[0222] During the suction action, external air can be supplied to the smoke rod S. For example... Figure 6 As shown, the state in which a portion of the cigarette rod S is inserted into the housing 10 corresponds to the state in which a portion of the housing 10 is opened by the cover 104. External air can flow into the interior of the housing 10 through the gap between the cover 104 and the housing 10.

[0223] Channels 151, 152, and 153 are fluidly connected to the insertion space 102 of the receiving portion 102p via inflow channel 151, intermediate channel 152, and supply channel 153, which allow external air to flow into the interior of the housing 10. External air from the housing 10 can be supplied to the smoke rod S in the insertion space 102 in sequence via inflow channel 151, intermediate channel 152, and supply channel 153.

[0224] A potential difference sensor 131 can be configured in the supply channel 153. The electrode 131e of the potential difference sensor 131 can protrude towards the supply channel 153. The potential difference sensor 131 can detect changes in the composition of the aerosol generated by the aerosol generator 241. Based on the changes in the composition of the aerosol generated by the smoke rod S heated by the heater 182, the potential difference of the potential difference sensor 131 changes, thereby generating a signal.

[0225] For example, the components of the aerosol that the potential difference sensor 131 is used to detect may be nicotine components or the pH concentration (hydrogen ion concentration) of droplets included in the aerosol.

[0226] According to the aerosol generating apparatus 1 of the above embodiment, the potential difference of the potential difference sensor 131 changes according to the change in the composition of the aerosol, thereby generating a signal. Therefore, it is possible to accurately and quickly detect changes in the composition of the aerosol generated by the aerosol generating apparatus 1.

[0227] Figure 7 This is a cross-sectional view of an aerosol generating apparatus 1 according to another embodiment.

[0228] according to Figure 7 The aerosol generating apparatus 1 of the illustrated embodiment includes: an aerosol generator; a channel 150; and a potential difference sensor 131 disposed in the channel 150 and used to generate a signal based on a potential difference that changes with the composition of the aerosol generated by the aerosol generator. Air can be supplied to the aerosol generator through the channel 150.

[0229] The aerosol generator includes: a housing 102p, including a receiving space for accommodating the smoke rod S; and a heater 18, at least a portion of which is located inside the housing 102p, and generates heat for heating the smoke rod S. The aerosol generating apparatus 1 may include a power supply 11 for supplying power to the heater 18.

[0230] like Figure 7 As shown, when the tobacco rod S is inserted into the receiving portion 102p, a portion of the heater 18 can be inserted into the end of the tobacco rod S. The bottom surface of the receiving space inside the receiving portion 102p has a protrusion 102g that protrudes towards the end of the tobacco rod S. The protrusion 102g can function to support the end of the tobacco rod S inserted into the receiving portion 102p.

[0231] Additionally, air flowing into the receiving section 102p from the outside can be supplied to the end of the smoke rod S through the space between the plurality of protrusions 102g. Since the plurality of protrusions 102g are arranged in a spaced-apart manner, air flowing into the receiving section 102p can be supplied to the end of the smoke rod S through the space between the plurality of protrusions 102g.

[0232] The channel 150 can be formed through the space between the inner surface 102s of the receiving portion 102p and the outer surface of the smoke rod S. One end of the channel 150 opens toward the outside of the aerosol generating device 1, and the other end of the channel 150 opens toward the end of the smoke rod S into which the heater 18 is inserted. The channel 150 can extend relatively long along the extending direction of the aerosol generating device 1. Therefore, air flowing into the receiving portion 102p from the outside can be supplied to the end of the smoke rod S through the channel 150.

[0233] A potential difference sensor 131 can be configured adjacent to the other end of the channel 150 that opens toward the end of the cigarette rod S. The electrode 131e of the potential difference sensor 131 can protrude toward the channel 150. The potential difference sensor 131 can detect changes in the composition of the aerosol generated by the cigarette rod S. Based on the changes in the composition of the aerosol generated by the cigarette rod S heated by the heater 182, the potential difference of the potential difference sensor 131 changes, thereby generating a signal.

[0234] The embodiments are not limited to the placement of the potential difference sensor 131. For example, the potential difference sensor 131 may be located on the bottom surface of the receiving space inside the receiving portion 102p. As another example, the potential difference sensor 131 may be located in the spaced space between a plurality of protrusions 102g.

[0235] According to the aerosol generating apparatus 1 of the above embodiment, the potential difference of the potential difference sensor 131 changes according to the change in the composition of the aerosol, thereby generating a signal. Therefore, it is possible to accurately and quickly detect changes in the composition of the aerosol generated by the aerosol generating apparatus 1.

[0236] Figure 8 This is a cross-sectional view of an aerosol generating apparatus 1 according to another embodiment.

[0237] according to Figure 8 The aerosol generating apparatus 1 shown in the embodiment and according to Figure 7 The aerosol generating apparatus 1 of the illustrated embodiment has a similar overall structure, but the structure of channel 150 is deformed.

[0238] According to Figure 8 In the aerosol generating apparatus 1 of the illustrated embodiment, the channel 150 is disposed inside the receiving portion 102p. With the tobacco rod S inserted into the receiving portion 102p, the inner surface of the receiving portion 102p can support the outer surface of the tobacco rod S inserted into the receiving portion 102p. There is no space between the inner surface of the receiving portion 102p and the tobacco rod S. Therefore, compared with the embodiment... Figure 7 The aerosol generating apparatus 1 shown in the embodiment differs from that in that it is based on... Figure 8 In the aerosol generating apparatus 1 of the illustrated embodiment, there is no airflow in the space between the inner surface of the accommodating portion 102p and the smoke rod S.

[0239] The channel 150 is disposed inside the receiving portion 102p and extends relatively long along the direction in which the aerosol generating device 1 extends. One end of the channel 150 opens toward the outside of the aerosol generating device 1, and the other end of the channel 150 opens toward the end of the smoke rod S into which the heater 18 is inserted. Therefore, external air from the aerosol generating device 1 can be supplied to the end of the smoke rod S through the channel 150.

[0240] For example, the receiving portion 102p can be manufactured by an injection molding process in which resin or molten metal is injected into a mold and hardened. The channel 150 can be formed based on the shape of a channel pre-prepared in the mold during the injection molding process. As another example, to form the channel 150 in the receiving portion 102p, a hole can be drilled in the receiving portion 102p after it has been prepared, thereby forming the channel 150.

[0241] A potential difference sensor 131 can be configured adjacent to the other end of the channel 150 that faces the end of the tobacco stick S. The electrode 131e of the potential difference sensor 131 can protrude towards the channel 150. The potential difference sensor 131 can detect changes in the composition of the aerosol generated by the tobacco stick S. Based on the changes in the composition of the aerosol generated by the tobacco stick S heated by the heater 18, the potential difference of the potential difference sensor 131 changes, thereby generating a signal.

[0242] The embodiments are not limited to the placement of the potential difference sensor 131. For example, the potential difference sensor 131 may be located on the bottom surface of the receiving space inside the receiving portion 102p. As another example, the potential difference sensor 131 may be located in the spaced space between a plurality of protrusions 102g.

[0243] According to the aerosol generating apparatus 1 of the above embodiment, the potential difference of the potential difference sensor 131 changes according to the change in the composition of the aerosol, thereby generating a signal. Therefore, it is possible to accurately and quickly detect changes in the composition of the aerosol generated by the aerosol generating apparatus 1.

[0244] Figure 9 This is a cross-sectional view of an aerosol generating apparatus 1 according to another embodiment.

[0245] according to Figure 9 The aerosol generating apparatus 1 of the illustrated embodiment includes: an aerosol generator; and a potential difference sensor 131 for generating a signal based on a potential difference that changes with the composition of the aerosol generated by the aerosol generator.

[0246] The aerosol generator includes: a housing 102p, including a housing space for accommodating the smoke rod S; and a heater 18, at least a portion of which is supported by the housing 102p and generates heat for heating the smoke rod S.

[0247] The receiving portion 102p may include a channel 150. The channel 150 may be formed through the receiving portion 102p.

[0248] A cartridge 19 can be attached to one side of the receiving portion 102p that houses the e-cigarette S. The cartridge 19 is another example of an aerosol generator. The cartridge 19 can be detachably mounted on the housing 10. When the cartridge 19 is mounted on the housing 10, the outlet 19e of the cartridge 19 is connected to the channel 150 of the receiving portion 102p.

[0249] One end of the channel 150 is open towards the e-cigarette S. The other end of the channel 150 is connected to the outlet 19e of the cartridge 19. Therefore, air and / or aerosol transmitted through the outlet 19e of the cartridge 19 can be supplied to the e-cigarette S through the channel 150. For example, when the aerosol generating device 1 is in a state where the cartridge 19 is stopped and only the e-cigarette S is heated, air can be supplied from the cartridge 19 to the channel 150.

[0250] The smoke cartridge 19 may include a chamber C0 internally. The chamber C0 may store aerosol-generating substances in any state (e.g., liquid, solid, gaseous, or gel).

[0251] With the cartridge 19 inserted into the housing 10, external air can flow into the interior of the housing 10. External air can flow into the aerosol generation chamber C1 inside the cartridge 19 through the inlet 19i.

[0252] The cartridge 19 may include a cartridge heater 24 for heating the aerosol generating material in the chamber C0, which contains the aerosol generating material. A liquid delivery device 25 impregnated with (containing) the aerosol generating material may be disposed inside the chamber C0.

[0253] The cartridge 19 can generate an aerosol. When the liquid delivery device 25 is heated by the cartridge heater 24, an aerosol can be generated. The aerosol generated in the aerosol generation chamber C1 of the cartridge 19 can be transferred to the cigarette rod S through the outlet 19e and the channel 150.

[0254] According to the aerosol generating device 1 of the above embodiment, when a user performs an inhalation action, the aerosol generated by the tobacco cartridge 19 can be supplied to the user after passing through the channel 150.

[0255] A potential difference sensor 131 is disposed in the receiving portion 102p. The electrodes 131e of the potential difference sensor 131 may be exposed toward the channel 150 of the receiving portion 102p. The configuration structure of the electrodes 131e of the potential difference sensor 131 may be modified. For example, at least a portion of the electrodes 131e of the potential difference sensor 131 may protrude toward the interior of the channel 150.

[0256] Examples are not limited to Figure 9 The location of the potential difference sensor 131 is shown. For example, the potential difference sensor 131 can be configured in the cartridge 19. That is, it can be configured by changing... Figure 9 The structure shown configures the potential difference sensor 131 at the outlet 19e and / or the inlet 19i.

[0257] As another example, the potential difference sensor 131 may be configured in all or part of the inlet 19i of the receiving portion 102p and the outlet 19e.

[0258] The potential difference sensor 131 can detect changes in the composition of the aerosol generated by the cigarette rod S and / or the aerosol generated by the cartridge 19. Based on the changes in the composition of the aerosol generated by the cigarette rod S and / or the aerosol generated by the cartridge 19 after being heated by the heater 18, the potential difference of the potential difference sensor 131 changes, thereby generating a signal.

[0259] According to the aerosol generating apparatus 1 of the above embodiment, the potential difference of the potential difference sensor 131 changes according to the change in the composition of the aerosol, thereby generating a signal. Therefore, it is possible to accurately and quickly detect changes in the composition of the aerosol generated by the aerosol generating apparatus 1.

[0260] Figure 10 It can be applied to Figures 1 to 9 A perspective view of the potential difference sensor 50 of the aerosol generation apparatus of the embodiment shown. Figure 10 The structure of a potential difference sensor 50 that can be configured in the channel of an aerosol generating device is shown in a schematic diagram.

[0261] At least a portion of the potential difference sensor 50 may be located in the channel of the aerosol generating device. Aerosols generated by the aerosol generator can flow through the channel.

[0262] The potential difference sensor 50 can perform the functions of contacting and liquefying a portion of the aerosol, and contacting the generated droplets and generating a signal. To generate droplets, the surface of the potential difference sensor 50 can be maintained at a temperature below the aerosol temperature. For example, at least a portion of the potential difference sensor 50 is connected to a thermally conductive material exposed to the outside of the aerosol generating device, and the potential difference sensor 50 can be maintained at a temperature below the aerosol temperature by the thermally conductive material in contact with the outside air.

[0263] The potential difference sensor 50 includes a signal generation unit 52 capable of generating a signal. The signal generation unit 52 may include a mesh member allowing aerosols in a gaseous state to pass through. The mesh may have a net shape with micropores 52m allowing the aerosol to pass through. For example, the signal generation unit 52 may include a metal mesh member. The signal generation unit 52 may be supported by a frame 58. A wiring 52f for transmitting electrical signals is electrically connected to the signal generation unit 52.

[0264] Aerosol flowing through the channel can pass through the micropores 52m of the signal generation unit 52. During the process of the aerosol passing through the micropores 52m of the signal generation unit 52, a portion of the aerosol liquefies and forms droplets. These droplets adhere to the surface of the signal generation unit 52.

[0265] When the components contained in an aerosol change, the composition of the droplets generated from the aerosol also changes. The potential difference sensor 50 can detect these changes in droplet composition. When a droplet adheres to the signal generation unit 52, a potential difference is generated in the signal generation unit 52, thereby generating a signal for the potential difference sensor 50. For example, depending on the pH concentration of the droplet, the potential difference in the signal generation unit 52 changes, thus generating a signal for the potential difference sensor 50.

[0266] For example, the signal generation unit 52 may include a reference electrode and a measurement electrode.

[0267] For example, the reference electrode and the measuring electrode can be made of any one or a combination of detection materials such as silver chloride or potassium chloride, glass electrode, indium tin oxide (ITO), and ion-sensitive field-effect transistor (ISFET).

[0268] In addition, the signal generation unit 52 may also include a protective material or coating material made of any one or a combination of polycarbonate (PC), polyimide (PI), polyetherimide, and polytetrafluoroethylene (PTFE).

[0269] Due to the change in composition of the droplet in contact with the signal generation unit 52, a potential difference in electrical signal can be generated between the reference electrode and the measuring electrode. The signal generation unit 52 can generate a signal based on the change in potential difference between the reference electrode and the measuring electrode. The pH concentration of the droplet can be detected based on the signal from the signal generation unit 52.

[0270] The potential difference sensor 50 may also include a cleaning device for removing droplets and / or foreign matter adhering to the potential difference sensor 50. The cleaning device can remove droplets and / or foreign matter from the potential difference sensor 50 after the aerosol generation operation of the aerosol generating device and / or the user's inhalation operation have ended.

[0271] For example, the cleaning device can be implemented by a piezoelectric actuator or electric motor built into or connected to the frame 58.

[0272] The cleaning device can be powered via wiring 52f connected to frame 58. When an electrical signal is applied to the cleaning device, a piezoelectric actuator or motor vibrates and transmits the vibration to signal generation unit 52. When signal generation unit 52 vibrates, droplets and / or foreign matter adhering to signal generation unit 52 can be separated from signal generation unit 52.

[0273] Figure 11 This is a flowchart illustrating an example of the operation of an aerosol generating apparatus according to various embodiments.

[0274] Figure 11 The operation of the aerosol generating device shown can be to address situations where, for example, the aerosol generating substance contained in the aerosol generating article, the medium of the cartridge, or the aerosol generating substance is completely depleted, resulting in the aerosol generating process becoming sluggish.

[0275] An example of the operation of an aerosol generating device includes a detection step (S100) using a potential difference sensor to detect changes in the composition of the aerosol during operation of the aerosol generating device.

[0276] In the detection step (S100) utilizing the potential difference sensor, a potential difference is generated in the sensor due to changes in the composition of the aerosol and / or droplets in contact with the sensor, thereby enabling the sensor to generate a signal. For example, the potential difference sensor can detect the pH concentration of droplets generated from the aerosol by measuring changes in the potential difference.

[0277] Following the detection step using the potential difference sensor (S100), a step of detecting aerosol-generating substance depletion based on the signal from the potential difference sensor is performed (S110). In the step of detecting aerosol-generating substance depletion (S110), aerosol-generating substance depletion can be detected based on a predetermined change in the composition of the aerosol associated with the depletion of the aerosol-generating substance. For example, when the nicotine content of the aerosol or the pH concentration of the droplets included in the aerosol decreases to below a predetermined reference value based on the result detected by the potential difference sensor, it can be determined that the aerosol-generating substance is depleted.

[0278] When the depletion of aerosol-generating material is detected in the step of detecting the depletion of aerosol-generating material (S110), the step of stopping the aerosol generator of the aerosol generating device (S120) can be executed. According to the step of stopping the aerosol generator (S120), the operation of the aerosol generator that generates aerosols is stopped, thereby interrupting the generation of aerosols.

[0279] After step S120 of stopping the aerosol generator, or simultaneously with step S120 of stopping the aerosol generator, a step to notify the user that the aerosol generating substance has been exhausted can be performed. This step to notify the user that the aerosol generating substance has been exhausted can be performed, for example, by displaying information on a display device, illuminating an indicator light, outputting an audible signal, or providing vibration feedback.

[0280] According to the operation of the aerosol generating device in the above embodiment, even without installing an expensive sensor for detecting the amount of aerosol generating substances in the aerosol generating device, the depletion of aerosol generating substances can be detected quickly and accurately, and the operation of the aerosol generating device can be effectively controlled based on the detection results.

[0281] Figure 12 This is a flowchart illustrating another example of the operation of an aerosol generating apparatus according to various embodiments.

[0282] Figure 12 The operation of the aerosol generating device shown can be used to detect abnormal operation of the aerosol generating device. Abnormal operation of the aerosol generating device may include, for example: overheating of the heater; dry smoking while the aerosol generating material in the cartridge is depleted; abnormal heating in an excessively cold environment where the heater temperature fails to reach the predetermined reference temperature; use of aerosol generating articles that are not permitted for use in the aerosol generating device; reuse of aerosol generating articles that have already been used to generate aerosols and / or use of unsuitable products including aerosol generating substances that are not permitted by the aerosol generating device, etc.

[0283] Another example of the operation of the aerosol generating device includes a detection step (S200) using a potential difference sensor to detect changes in the composition of the aerosol during operation of the aerosol generating device.

[0284] In the detection step (S200) utilizing the potential difference sensor, a potential difference is generated in the sensor due to changes in the composition of the aerosol and / or droplets in contact with the sensor, thereby enabling the sensor to generate a signal. For example, the potential difference sensor can detect the pH concentration of droplets generated from the aerosol by measuring changes in the potential difference.

[0285] After the detection step using the potential difference sensor (S200), a step of detecting abnormal operation of the aerosol generation device based on the signal from the potential difference sensor is performed (S210).

[0286] In the step (S210) of detecting abnormal operation of the aerosol generation device, abnormal operation can be detected based on predetermined changes in aerosol composition related to the abnormal operation. For example, when the nicotine content of the aerosol or the pH concentration of droplets included in the aerosol exceeds a predetermined range based on the results detected by the potential difference sensor, abnormal operation can be determined.

[0287] When an abnormal operation of the aerosol generating device is detected in step (S210), a step to stop the aerosol generator can be executed (S220). By stopping the aerosol generator (S220), the operation of the aerosol generator is stopped, thereby interrupting aerosol generation.

[0288] After stopping the aerosol generator (S220), or simultaneously with stopping the aerosol generator (S220), a step to notify the user of an abnormal action can be performed. This notification can be achieved, for example, by displaying information guiding "use permitted item" on a display device, illuminating an indicator light, outputting a voice prompt guiding "use permitted item," or providing vibration feedback.

[0289] Based on the operation of the aerosol generating device according to the above embodiments, various abnormal operating conditions of the aerosol generating device can be detected quickly and accurately using a potential difference sensor.

[0290] Figure 13 This is a flowchart illustrating yet another example of the operation of the aerosol generating apparatus according to various embodiments.

[0291] Figure 13 The operation of the aerosol generating device shown may involve, for example, adjusting the temperature profile of the aerosol generator according to the type of aerosol generating article installed in the aerosol generating device, the medium of the cartridge, or the type of aerosol generating substance. As another example, the operation of the aerosol generating device may involve adjusting the temperature profile of the aerosol generator according to the progress of the inhalation time during the aerosol inhalation action.

[0292] The operation of the aerosol generating device includes a detection step (S300) using a potential difference sensor to detect changes in the composition of the aerosol during operation of the aerosol generating device.

[0293] In the detection step (S300) utilizing the potential difference sensor, a potential difference is generated in the sensor due to changes in the composition of the aerosol and / or droplets in contact with the sensor, thereby enabling the sensor to generate a signal. For example, the potential difference sensor can detect the pH concentration of droplets generated from the aerosol by measuring changes in the potential difference.

[0294] After the detection step using the potential difference sensor (S300), the step of adjusting the temperature profile is performed (S310). In the step of adjusting the temperature profile (S310), the temperature profile related to various parameters used to control the aerosol generator can be adjusted based on the detection results in the detection step using the potential difference sensor (S300).

[0295] In the step of adjusting the temperature profile (S310), for example, the type of aerosol generating article installed in the aerosol generating device, the medium of the cigarette cartridge, or the type of aerosol generating substance can be determined based on the result detected by the potential difference sensor, and a temperature profile suitable for the determined type of aerosol generating article can be selected.

[0296] As another example, in the step of adjusting the temperature profile (S310), the nicotine content of the aerosol or the pH concentration change of the droplets included in the aerosol can be detected by a potential difference sensor, and the duration of the inhalation action or the number of inhalation actions can be estimated. In the step of adjusting the temperature profile (S310), the duration of the inhalation action or the number of inhalation actions estimated based on the detection results of the potential difference sensor can be considered, thereby adjusting the temperature profile related to the operation of the aerosol generator.

[0297] After the step of adjusting the temperature profile (S310), the step of controlling the operation of the aerosol generator using the adjusted temperature profile (S320) can be performed.

[0298] According to the operation of the aerosol generating device in the above embodiment, the changes in aerosol composition can be detected immediately and the operation of the aerosol generator can be controlled in response to the changes in aerosol composition, thereby achieving effective aerosol generation.

[0299] The embodiments of this disclosure described above, or other embodiments, are not mutually exclusive or distinct from each other. The constituent elements or functions of the embodiments of this disclosure described above, or other embodiments, can be used together or combined with each other.

[0300] For example, this means that component A illustrated in a particular embodiment and / or drawing can be combined with component B illustrated in other embodiments and / or drawings. That is, this means that even if the combination between components is not directly described, they can be combined except where it is stated that combination is impossible.

[0301] The detailed description above should be considered exemplary in all respects and not construed as restrictive. The scope of the invention should be determined by a reasonable interpretation of the claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

[0302] Industrial applicability The embodiments relate to an aerosol generating apparatus capable of accurately detecting changes in the composition of aerosols.

Claims

1. An aerosol generating device, characterized in that, include: Aerosol generator, used to generate aerosols, and The potential difference sensor generates a signal based on the potential difference that changes with the composition of the aerosol generated by the aerosol generator.

2. The aerosol generating apparatus according to claim 1, characterized in that, It also includes a channel for at least a portion of the aerosol generated by the aerosol generator to flow through, and the potential difference sensor generates the signal based on changes in the composition of the aerosol flowing through the channel.

3. The aerosol generating apparatus according to claim 2, characterized in that, At least a portion of the potential difference sensor is located in the channel.

4. The aerosol generating apparatus according to claim 1, characterized in that, The potential difference sensor generates the signal based on pH changes in the aerosol.

5. The aerosol generating apparatus according to claim 2, characterized in that, The aerosol generator includes an aerosol generation chamber for generating aerosols, and the channel is connected to the aerosol generation chamber, through which aerosols generated from the aerosol generation chamber flow. The potential difference sensor generates the signal based on changes in the composition of the aerosol flowing through the channel.

6. The aerosol generating apparatus according to claim 2, characterized in that, The aerosol generator includes: a housing for housing an aerosol generating article for generating aerosols, and a heater for heating the aerosol generating article; The channel is formed through the space between the aerosol-generating article housed in the containment and the inner surface of the containment.

7. The aerosol generating apparatus according to claim 2, characterized in that, The aerosol generator includes: a housing for housing an aerosol generating article for generating aerosols, and a heater for heating the aerosol generating article; The channel passes through the receiving part.

8. The aerosol generating apparatus according to claim 1, characterized in that, The aerosol generator includes: Smoke cartridges are used to generate aerosols from aerosol-generating substances, and The container holds an aerosol-generating article and transfers the aerosol generated by the smoke cartridge to the aerosol-generating article. The potential difference sensor is disposed in the housing.

9. The aerosol generating apparatus according to claim 8, characterized in that, The aerosol generator further includes a heater that heats the aerosol-generating article housed in the containment and generates aerosols. The potential difference sensor generates a signal based on the potential difference that changes with the variation of at least one component of the aerosol generated from the aerosol generating article and the aerosol generated from the cartridge.

10. The aerosol generating apparatus according to claim 1, characterized in that, It also includes a controller for controlling the operation of the aerosol generator. The aerosol generator generates aerosols from aerosol-generating substances. The controller detects the depletion of the aerosol generating substance based on the signal from the potential difference sensor, and stops the operation of the aerosol generator when the aerosol generating substance is depleted.

11. The aerosol generating apparatus according to claim 1, characterized in that, It also includes a controller for controlling the operation of the aerosol generator. The controller detects abnormal operation of the aerosol generator based on the signal from the potential difference sensor, and stops the operation of the aerosol generator when it malfunctions.

12. The aerosol generating apparatus according to claim 1, characterized in that, The aerosol generator includes a heater for heating the aerosol-generating substance. It also includes a controller that controls the operation of the heater based on a predetermined temperature profile. The controller changes the temperature profile used to control the operation of the heater based on the signal from the potential difference sensor.

13. The aerosol generating apparatus according to claim 1, characterized in that, The potential difference sensor includes a signal generation unit that allows aerosols to pass through a mesh structure. The aerosols pass through the signal generation unit and generate droplets. The signal generation unit generates the signal based on the potential difference that changes with the composition of the droplets.

14. The aerosol generating apparatus according to claim 1, characterized in that, The potential difference sensor contacts the aerosol and liquefies a portion of the aerosol, and the potential difference sensor contacts droplets generated from the aerosol and generates the signal.

15. The aerosol generating apparatus according to claim 1, characterized in that, The potential difference sensor includes a reference electrode and a measuring electrode. The potential difference between the reference electrode and the measuring electrode changes according to the composition of the aerosol, thereby generating the signal.

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