Aerosol-generating device

Abstract

This aerosol-generating device comprises: an aerosol generator for generating an aerosol; and a potential-difference sensor for generating a signal on the basis of potential difference that changes in response to variations in the components of the aerosol generated by the aerosol generator.

Description

Aerosol generating device

[0001] The embodiments relate to an aerosol generating device, and more particularly, to an aerosol generating device capable of precisely detecting changes in the components of an aerosol.

[0002] Recently, there has been a growing demand for alternative methods that overcome the shortcomings of conventional cigarettes. For example, there is a growing demand for systems that generate aerosols by heating cigarettes or aerosol-generating materials using an aerosol-generating device, rather than by burning cigarettes to produce aerosol.

[0003] To control the operation of the aerosol generating device, the aerosol generating device may include sensors. For example, if the aerosol generating device includes a temperature sensor, it can detect changes in the temperature of the heater or the surroundings of the heater. As another example, if the aerosol generating device includes a puff sensor for detecting a user's puffing motion, the operation of the aerosol generating device can be controlled based on the user's puffing motion while inhaling the aerosol.

[0004] An aerosol generating device, including a temperature sensor or puff sensor, may utilize signal information related to temperature or the user's puffing motion in connection with the operation of the aerosol generating device. However, related signal information, such as temperature or the user's puffing motion, is not directly related to the components contained in the aerosol generated by the aerosol generating device and delivered to the user.

[0005] It is important for aerosol generators to operate efficiently, adapting to the diverse environments in which they are used and the diverse types of users who use them. For this to work efficiently, an aerosol generator capable of detecting the components contained in the aerosol is required.

[0006] Embodiments seek to provide an aerosol generating device that can operate based on signal information directly related to the composition of an aerosol generated by the aerosol generating device.

[0007] The problems to be solved through the embodiments of the present disclosure are not limited to the problems described above, and problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the embodiments belong from this specification and the attached drawings.

[0008] Additional aspects will be described in the following description, some of which may be apparent or understandable from the practice of the embodiments provided in this disclosure.

[0009] An aerosol generating device according to one aspect includes an aerosol generator for generating an aerosol; and a potential difference sensor for generating a signal by a potential difference that changes according to a change in a component of an aerosol generated by the aerosol generator.

[0010] The aerosol generating device may further include a passage through which at least a portion of the aerosol generated by the aerosol generator may flow. The potentiometric sensor may generate a signal based on a change in the composition of the aerosol flowing through the passage.

[0011] At least a portion of the potentiometer sensor may be located in the passage.

[0012] A potentiometric sensor can generate a signal based on changes in the pH of an aerosol.

[0013] The aerosol generator may include an aerosol generation chamber for generating an aerosol. A passage may be connected to the aerosol generation chamber, and the aerosol generated in the aerosol generation chamber may flow through the passage.

[0014] A potentiometric sensor can generate a signal based on changes in the composition of an aerosol flowing through the passage.

[0015] The aerosol generator may include a receiving portion for receiving an aerosol generating article for generating an aerosol.

[0016] The aerosol generator may further include a heater for heating the aerosol generating article.

[0017] The passage may be formed by a space between an aerosol generating article contained in the container and an inner surface of the container.

[0018] The aerosol generator may include a receiving portion for receiving an aerosol-generating article for generating an aerosol, and a heater for heating the aerosol-generating article. A passage may pass through the receiving portion.

[0019] The aerosol generator may include a cartridge for generating an aerosol from an aerosol generating material. The aerosol generator may further include a receiving portion for receiving an aerosol generating article and delivering the aerosol generated in the cartridge to the aerosol generating article.

[0020] A potential difference sensor can be placed in the receiving portion.

[0021] The aerosol generator may further include a heater for heating an aerosol generating article contained in the receiving portion to generate an aerosol.

[0022] The potentiometric sensor can generate a signal based on a potential difference that changes in response to a change in at least one component of the aerosol generated from the aerosol generating article and the aerosol generated from the cartridge.

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

[0024] An aerosol generator can generate an aerosol from an aerosol generating material.

[0025] The controller can detect that the aerosol generating material has been exhausted based on a signal from the potential sensor. The controller can stop the operation of the aerosol generator when the aerosol generating material has been exhausted.

[0026] The controller can detect abnormal operation of the aerosol generator based on a signal from the potential difference sensor. The controller can stop operation of the aerosol generator if the aerosol generator is operating abnormally.

[0027] The aerosol generator may include a heater for heating the aerosol generating material.

[0028] The aerosol generating device may further include a controller for controlling the operation of the heater based on a predetermined temperature profile.

[0029] The controller can change the temperature profile to control the operation of the heater based on the signal from the potentiometer sensor.

[0030] The potentiometric sensor may include a signal generating portion made of a mesh material that allows aerosols to pass through.

[0031] An aerosol may pass through a signal generating unit to generate droplets. The signal generating unit may generate a signal by changing the potential difference according to changes in the components of the droplets.

[0032] The potentiometric sensor can liquefy a portion of the aerosol by coming into contact with it. The potentiometric sensor can generate a signal by coming into contact with droplets generated from the aerosol.

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

[0034] According to the aerosol generating device according to the embodiments, a signal from the potentiometric sensor is generated by changing the potential difference of the potentiometric sensor according to changes in the composition of the aerosol. Accordingly, changes in the composition of the aerosol generated by the aerosol generating device can be detected precisely and quickly.

[0035] According to the operation of the aerosol generating device according to the embodiments, the situation where the aerosol generating substance is exhausted can be quickly and precisely detected without the need for expensive sensors to detect the amount of aerosol generating substance in the aerosol generating device. Furthermore, the operation of the aerosol generating device can be efficiently controlled based on the detection results using a potential difference sensor.

[0036] According to the operation of the aerosol generating device according to the embodiments, it is possible to quickly and precisely respond to various abnormal operation situations of the aerosol generating device by utilizing a potential difference sensor.

[0037] According to the operation of the aerosol generating device according to the above-described embodiment, the operation of the aerosol generator can be controlled by immediately reflecting changes in the components of the aerosol, so that an efficient aerosol generating operation can be implemented.

[0038] The effects of the embodiments are not limited to the effects described above, and effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the embodiments belong from this specification and the attached drawings.

[0039] The above and other aspects, features, and advantages of specific embodiments of the present disclosure will be apparent from the following description taken in conjunction with the accompanying drawings.

[0040] FIG. 1 is a block diagram of an aerosol generating device according to one embodiment.

[0041] Figure 2a illustrates an aerosol generating device according to another embodiment.

[0042] Figure 2b illustrates an aerosol generating device according to another embodiment.

[0043] Figure 3 illustrates an aerosol generating device according to another embodiment.

[0044] Figure 4 illustrates an aerosol generating device according to another embodiment.

[0045] Figure 5 is a longitudinal cross-sectional view of an aerosol generating device according to another embodiment.

[0046] FIG. 6 is a longitudinal cross-sectional view of a portion of an aerosol generating device according to another embodiment.

[0047] Fig. 7 is a cross-sectional view of an aerosol generating device according to another embodiment.

[0048] Fig. 8 is a cross-sectional view of an aerosol generating device according to another embodiment.

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

[0050] FIG. 10 is a perspective view of a potential difference sensor that can be applied to the aerosol generating device according to the embodiments illustrated in FIGS. 1 to 9.

[0051] FIG. 11 is a flowchart showing an example of the operation of an aerosol generating device according to various embodiments.

[0052] FIG. 12 is a flowchart showing another example of the operation of an aerosol generating device according to various embodiments.

[0053] FIG. 13 is a flowchart illustrating another example of the operation of an aerosol generating device according to various embodiments.

[0054] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components will be assigned the same reference numbers, and redundant descriptions thereof will be omitted. In relation to the description of the drawings, similar drawing numbers may be used for similar or related components.

[0055] The suffixes "module" and "unit" used for components in the following description are assigned or used interchangeably only for the convenience of writing the specification, and do not have distinct meanings or roles in themselves. Meanwhile, the suffixes "module" or "unit" may include units implemented with hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A "module" or "unit" may be a component configured integrally, or a minimum unit of the component that performs one or more functions, or a part thereof. For example, a "module" or "unit" may be implemented in the form of an application-specific integrated circuit (ASIC).

[0056] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0057] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0058] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0059] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0060] Embodiments of the present disclosure may be implemented as software including one or more instructions stored in a storage medium (e.g., memory (17)) readable by a machine (e.g., an aerosol generating device (1)). For example, a processor (e.g., a control unit (12)) of the machine (e.g., an aerosol generating device (1)) may call at least one command among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0061] In the present disclosure, the direction of the aerosol generating device (1) can be defined based on the orthogonal coordinate system. In the orthogonal coordinate system, the x-axis direction can be defined as the left-right direction of the aerosol 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] Fig. 1 is a block diagram of an aerosol generating device (1) according to one embodiment.

[0063] According to one embodiment, the aerosol generating device (1) may include a power source (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 a heater (18, 24). However, it will be understood by those skilled in the art related to the present embodiment that some of the components illustrated in FIG. 1 may be omitted or new components may be added depending on the design of the aerosol generating device (1).

[0064] According to one embodiment, the sensor unit (13) can detect the state of the aerosol generating device (1) or the state around the aerosol generating device (1) and transmit the detected information to the control unit (12). For example, the sensor unit (13) may include a temperature sensor, a puff sensor, an insertion detection sensor, a reuse detection sensor, an overly moist detection sensor, a cigarette identification sensor, a cartridge detection sensor, a cap detection sensor, and / or a movement detection sensor. Meanwhile, the sensor unit (13) may further include various sensors, such as a liquid remaining amount sensor for detecting the liquid remaining amount of the cartridge, and an immersion sensor for detecting immersion of the aerosol generating device (1).

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

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

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

[0068] In one embodiment, the temperature sensor can detect the temperature of the power source (11). The temperature sensor can be positioned adjacent to the power source (11). For example, the temperature sensor can be attached to one surface of the power source (11) (e.g., a battery) and / or mounted on one surface of a printed circuit board. For example, the aerosol generating device (1) can include a power protection circuit module (PCM), and the temperature sensor can be positioned adjacent to the power source (11) together with the power protection circuit.

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

[0070] In one embodiment, the puff sensor can detect a user's puff.

[0071] For example, the puff sensor may include a pressure sensor. The pressure sensor may output a signal corresponding to the internal pressure of the aerosol generating device (1), and the control unit (12) may detect the user's puff based on the signal corresponding to the internal pressure. Here, the internal pressure of the aerosol generating device (1) may correspond to the pressure of an airflow path through which gas flows. The puff sensor may be arranged in correspondence to the airflow path through which gas flows in the aerosol generating device (1).

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

[0073] As another example, the puff sensor may include both a pressure sensor and a temperature sensor. In this case, the temperature sensor may measure a temperature used to correct the internal pressure measured by the pressure sensor. As an example, the puff sensor may correct a signal corresponding to the internal pressure based on the temperature measured by the temperature sensor and output the corrected signal. As another example, the puff sensor may output a signal corresponding to the temperature measured by the temperature sensor and a signal corresponding to the internal pressure measured by the puff sensor. In this case, the control unit (12) may 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 puff sensor may include a capacitance sensor. In the present disclosure, the capacitance sensor may also be referred to as a capacitive sensor or a capacitive sensor. When a user puffs, a temperature change and / or aerosol flow may occur within the insertion space of the aerosol-generating article, and thus, the permittivity within the insertion space may change. The control unit (12) may detect the user's puff based on a signal corresponding to the permittivity within the insertion space, etc., output from the capacitance sensor.

[0075] The puff sensor is not limited to the examples described above and may be implemented with various sensors to detect the user's puff.

[0076] In one embodiment, an insertion detection sensor can detect the insertion and / or removal of an aerosol-generating item. The insertion detection sensor can be installed around the insertion space. Additionally, the insertion detection sensor can include any combination of the examples described above.

[0077] For example, the insertion detection sensor may include a capacitive sensor. The capacitive sensor may include at least one conductor, and the at least one conductor may be positioned adjacent to the insertion space. When an aerosol-generating article is inserted or removed within the insertion space, the permittivity 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 corresponding to the permittivity within the insertion space, etc., output from the capacitive sensor.

[0078] As another example, the insertion detection sensor may include an inductive sensor. The inductive sensor may include at least one coil, and the at least one coil may be disposed adjacent to the insertion space. If the aerosol-generating article (e.g., a wrapper of the aerosol-generating article) includes a conductor, a change in a magnetic field may occur around the current-carrying coil when the aerosol-generating article is inserted into or removed from the insertion space. The control unit (12) may detect the insertion and / or removal of the aerosol-generating article including the conductor based on the characteristics of the current output from or detected by the inductive sensor (e.g., frequency of the alternating current, current value, voltage value, inductance value, impedance value, etc.). Alternatively, the aerosol-generating article (e.g., the medium portion of the aerosol-generating article) may include a susceptor (SUS). Even in this case, a change in the magnetic field may occur around the coil based on the insertion or removal of a susceptor or the like within the insertion space, and the control unit (12) may also detect the insertion and / or removal of the aerosol generating article based on the characteristics of the current of the inductive sensor.

[0079] The insertion detection sensor is not limited to the examples described above, and may be implemented with various sensors (e.g., proximity sensors, etc.) for detecting the insertion and / or removal of an aerosol-generating article. Furthermore, the insertion detection sensor may include any combination of the examples described above. In one embodiment, the insertion detection sensor may include a switch or the like for detecting pressure by an aerosol-generating article.

[0080] In one embodiment, a reuse detection sensor can detect whether an aerosol-generating article has been reused. For example, the reuse detection sensor may be a color sensor for detecting the color of the aerosol-generating article. When the aerosol-generating article is used by a user, a color change may occur in a portion of a wrapper surrounding the exterior of the aerosol-generating article due to the generated aerosol or heating. The color sensor can output a signal corresponding to an optical characteristic (e.g., a wavelength of light) corresponding to the color of the wrapper based on light reflected from the wrapper. If a change in the color of a portion of the wrapper is detected, the control unit (12) can determine that the aerosol-generating article inserted into the insertion space has already been used.

[0081] According to one embodiment, the over-humidity detection sensor can detect whether an aerosol-generating article is over-humidified. For example, the over-humidity detection sensor can include a capacitive sensor. The capacitive sensor can include at least one conductor disposed adjacent to an insertion space. The control unit (12) can detect whether the aerosol-generating article is over-humidified based on the level of a signal corresponding to a permittivity or the like output from the capacitive sensor. For example, the control unit (12) can check a level range within which the level of the signal is included based on a look-up table, and determine the moisture content of the aerosol-generating article based on the checked level range.

[0082] In one embodiment, the cigarette identification sensor can detect whether an aerosol generating article is genuine and / or detect the type of aerosol generating article.

[0083] For example, the cigarette identification sensor may include an optical sensor for detecting an identification material (or identification mark) located on the outer surface (e.g., wrapper) of an aerosol-generating article. The optical sensor may irradiate light toward the identification material (or identification mark) of the aerosol-generating article and detect the authenticity and / or type of the aerosol-generating article based on the reflected light. For example, the identification material may include a material that emits light in a specific wavelength range based on the irradiated light. The control unit (12) may detect the authenticity and / or type of the aerosol-generating article based on the range of the wavelength.

[0084] As another example, the cigarette identification sensor may include a capacitive sensor. The dielectric constant within the insertion space may vary depending on the type of aerosol-generating product inserted into the insertion space. The control unit (12) may detect the authenticity and / or type of the aerosol-generating product based on a signal corresponding to the dielectric constant within the insertion space output from the capacitive sensor.

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

[0086] The cigarette identification sensor is not limited to the examples described above, and may be implemented with various sensors to detect the authenticity of an aerosol-generating product and / or the type of aerosol-generating product. Furthermore, the cigarette identification sensor may include any combination of the examples described above.

[0087] In one embodiment, the cartridge detection sensor may detect the mounting and / or removal of a cartridge. For example, the cartridge detection sensor may include an inductive sensor, a capacitive sensor, a resistive sensor, a Hall sensor (Hall IC), and / or an optical sensor.

[0088] In one embodiment, the cap detection sensor can detect the mounting and / or removal of the cap. For example, the cap detection sensor can include an inductive sensor, a capacitive sensor, a resistive sensor, a contact sensor, a Hall sensor (hall IC), and / or an optical sensor. The cap can 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 a housing of the aerosol generating device (1). The cap detection sensor can output a signal corresponding to the mounting or removal when the cap is mounted on or removed from the housing, and the control unit (12) can detect the mounting or removal of the cap based on the signal corresponding to the mounting or removal.

[0089] According to one embodiment, the motion detection sensor can detect the movement of the aerosol generating device (1). The motion detection sensor can be implemented as at least one of an acceleration sensor or a gyro sensor.

[0090] According to one embodiment, the sensor unit (13) may further include, in addition to the aforementioned sensors, 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 the functions of each sensor can be intuitively inferred by a person skilled in the art from its name, a detailed description thereof may be 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) can 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) can include a charging / discharging status of the power supply (11) of the aerosol generating device (1), a preheating status of the heater (18, 24), an insertion / removal status of an aerosol generating article and / or a cartridge, a mounting and / or removal status of a cap, or a status in which the use of the aerosol generating device (1) is restricted (e.g., detection of an abnormal article). The display can visually provide information about the status of the aerosol generating device (1) to the user. For example, the display can include a light emitting diode (LED) light emitting element, a liquid crystal display panel (LCD), an organic light emitting display panel (OLED), etc. The display, if it includes a touch pad, can also be used as an input unit (15). The haptic unit can provide tactile information about the status of the aerosol generating device (1) to the user. For example, the haptic unit can include a vibration motor, a piezoelectric element, an electrical stimulation device, etc. The acoustic output unit can provide audible information about the aerosol generating device (1) to the user. For example, the acoustic output unit can convert an electrical signal into an acoustic signal and output it to the outside.

[0092] According to one embodiment, the power source (11) can supply power for the operation of the aerosol generating device (1). The power source (11) can include one or more batteries. The power source (11) can supply power so that the heaters (18, 24) can be heated. In addition, the power source (11) can also supply power required for the operation of other components included in the aerosol generating device (1), such as the control unit (12), the sensor unit (13), the output unit (14), the input unit (15), the communication unit (16), and the 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 also be a replaceable type (detachable) battery (hereinafter, referred to as a removable battery). The removable battery may be mounted in the battery compartment provided within the aerosol generating device (1) or may be removed from the battery compartment. The removable battery may be charged by wire and / or wirelessly.

[0093] According to one embodiment, the heater (18, 24) may be powered by the power source (11) to heat the aerosol generating article and / or the medium and / or the aerosol generating material within the cartridge. The aerosol generating device (1) may include a heater (18) for heating the aerosol generating article and / or a cartridge heater (24) for heating the cartridge (i.e., the solid and / or liquid medium).

[0094] In one embodiment, the heater (18, 24) may be an electrically resistive heater. For example, the electrically resistive heater may include an electrically resistive material, such as a metal or metal alloy including titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, etc. The electrically resistive heater may be implemented as a metal heating wire, a metal heating plate having electrically conductive tracks arranged thereon, a ceramic heating element, etc.

[0095] In one embodiment, the heater (18, 24) may be an induction heating heater. For example, the induction heating heater may include a susceptor that generates heat by a magnetic field. A magnetic field may be generated from the induction coil by an alternating current flowing through the induction coil. The generated magnetic field may penetrate the heater, and an eddy current may be generated in the susceptor. The susceptor may be heated based on the generation of the eddy current. In one embodiment, the susceptor may be included within the aerosol generating article (e.g., the medium portion). In this case, the susceptor included within the aerosol generating article may be heated by the induction coil.

[0096] The heater (18, 24) is not limited to the examples described above, and may include or be replaced with various heating methods, structures, components, etc. for heating the aerosol generating article and / or cartridge.

[0097] According to one embodiment, the input unit (15) can receive information input from a user. For example, the input unit (15) can include a touch panel, a button, a key pad, a dome switch, a jog wheel, a jog switch, etc.

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

[0099] According to one embodiment, the communication unit (16) may include at least one component for communicating with another electronic device (e.g., a portable electronic device). For example, the communication unit (16) may include a Bluetooth communication unit, a BLE (Bluetooth Low Energy) communication unit, a near field communication unit, a WLAN (wireless local area network) communication unit, a Zigbee communication unit, an infrared (infrared Data Association, IrDA) communication unit, a WFD (Wireless Fidelity Direct) communication unit, an UWB (ultra wideband) communication unit, an ANT (Adaptive Network Topology)+ communication unit, a cellular network communication unit, an Internet communication unit, a computer network (e.g., a LAN or WAN) communication unit, etc.

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

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

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

[0103] According to one embodiment, the control unit (12) can control the current and / or voltage supplied to the heater (18, 24) by controlling the frequency and / or duty ratio of a current pulse input to at least one switching element of the power conversion circuit (not shown). The duty ratio for 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 source (11).

[0104] According to one embodiment, the control unit (12) can control the power supplied to the heater (18, 24) using at least one of a pulse width modulation (PWM) method and a proportional-integral-differential (PID) method. For example, the control unit (12) can control a current pulse having a predetermined frequency and duty ratio to be supplied to the heater (18, 24) using the PWM method. The control unit (12) can control the power supplied to the heater (18, 24) by adjusting the frequency and duty ratio of the current pulse. For example, the control unit (12) can determine a target temperature that is a target of control based on a temperature profile. The control unit (12) can control the power supplied to the heater (18, 24) by using the PID method, which is a feedback control method using the difference value between the temperature of the heater (18, 24) and the target temperature, the value obtained by integrating the difference value over time, and the value obtained by differentiating the difference value over time.

[0105] According to one embodiment, the control unit (12) can determine a target power that is the target of control based on the power profile. The control unit (12) can also control the power supplied to the heater (18, 24) to correspond to the preset target power over time.

[0106] According to one embodiment, the control unit (12) can detect the user's puff by detecting the power supplied to the heater (18, 24). More specifically, the control unit (12) can control the power supplied to the heater (18, 24) using a PID method. When the user's puff is generated, a temporary temperature drop may occur in a space where an aerosol generating article is inserted (hereinafter, referred to as the insertion space), the heater (18, 24), etc. Accordingly, a change may occur in the power (or current) supplied to the heater (18, 24) during the power control using the PID method. The control unit (12) can detect the user's puff based on the change in the controlled power.

[0107] In one embodiment, the control unit (12) can prevent the heater (18, 24) from overheating. For example, the control unit (12) can control the operation of the power conversion circuit to reduce the amount of power supplied to the heater (18, 24) or to stop supplying power to the heater (18, 24) based on whether the temperature of the heater (18, 24) exceeds a preset limit temperature.

[0108] According to one embodiment, the control unit (12) can control charging and discharging of the power source (11). For example, the control unit (12) can check the temperature of the power source (11) using a temperature sensor (e.g., sensor unit (13)). If the temperature of the power source (11) is higher than a first limit temperature, the control unit (12) can block charging of the power source (11). If the temperature of the power source (11) is higher than a second limit temperature, the control unit (12) can stop using (e.g., discharging) the power stored in the power source (11). The control unit (12) can calculate the remaining capacity of the power stored in the power source (11). For example, the control unit (12) can calculate the remaining capacity of the power source (11) based on voltage and / or current sensing values ​​of the power source (11).

[0109] According to one embodiment, the control unit (12) can control the power supply to the heater (18, 24) based on the result detected by the sensor unit (13).

[0110] According to one embodiment, the control unit (12) can control the power supply to the heater (18, 24) based on the insertion and / or removal of the aerosol-generating article into the insertion space. For example, the control unit (12) can control to supply power to the heater (18, 24) when it is determined that the aerosol-generating article has been inserted into the insertion space using an insertion detection sensor (e.g., sensor unit (13)). The control unit (12) can cut off the power supply to the heater (18, 24) when it is determined that the aerosol-generating article has been removed from the insertion space using an insertion detection sensor (e.g., sensor unit (13)). The control unit (12) can also determine that the aerosol-generating article has been removed from the insertion space when the temperature of the heater (18, 24) is equal to or higher than a limited temperature or when the temperature change slope of the heater (18, 24) is equal to or higher than a set slope.

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

[0112] In one embodiment, the control unit (12) may control the power supply to the heater (18, 24) based on whether the aerosol generating article has been reused. For example, the control unit (12) may cut off the power supply to the heater (18, 24) if it is determined that the aerosol generating article has been used.

[0113] According to one embodiment, the control unit (12) can control the power supply to the heater (18, 24) based on whether the cartridge is coupled and / or removed. For example, if the control unit (12) determines that the cartridge is coupled and / or removed using a cartridge detection sensor (e.g., sensor unit (13)), the control unit (12) can control to stop the power supply to the heater (18, 24) or prevent power from being supplied to the heater (18, 24).

[0114] According to one embodiment, the control unit (12) may control the power supply to the heater (18, 24) based on whether the aerosol generating material of the cartridge has been exhausted. For example, if the control unit (12) determines that the temperature of the heater (18, 24) exceeds a limit temperature while preheating the heater (18, 24) (i.e., during the preheating period), the control unit (12) may determine that the aerosol generating material of the cartridge has been exhausted. If the control unit (12) determines that the aerosol generating material of the cartridge has been exhausted, the control unit (12) may cut off the power supply to the heater (18, 24).

[0115] According to one embodiment, the control unit (12) may control the power supply to the heater (18, 24) based on whether the cartridge is available for use. For example, the control unit (12) may determine that the cartridge is unusable if the current number of puffs is determined to be greater than or equal to the maximum number of puffs set for the cartridge based on data stored in the memory (17). Alternatively, the control unit (12) may determine that the cartridge is unusable if the total time that the heater (18, 24) has been heated is greater than or equal to the preset maximum time or the total amount of power supplied to the heater (18, 24) is greater than or equal to the preset maximum amount of power. In this case, the control unit (12) may stop the power supply to the heater (18, 24) or control that power is not supplied to the heater (18, 24).

[0116] According to one embodiment, the control unit (12) can control the power supply to the heater (18, 24) based on the user's puff. For example, the control unit (12) can determine whether a puff has been generated and / or the intensity of the puff using a puff sensor (e.g., sensor unit (13)). The control unit (12) can cut off the power supply to the heater (18, 24) when the number of puffs reaches a preset maximum number of puffs and / or no puffs are detected for a preset period of time. The control unit (12) can also control the power supply to the heater (18, 24) when a puff is detected.

[0117] In one embodiment, the control unit (12) may control the power supply to the heater (18, 24) based on whether the aerosol generating article (or cartridge) is genuine and / or the type thereof. For example, the control unit (12) may detect whether the aerosol generating article is genuine and / or the type thereof using a cigarette identification sensor (e.g., sensor unit (13)). For example, if the control unit (12) detects that the aerosol generating article (or cartridge) is counterfeit, the control unit (12) may cut off the power supply to the heater (18, 24). If the control unit (12) detects that the aerosol generating article (or cartridge) is genuine, the control unit (12) may control (e.g., start) the power supply to the heater (18, 24). As another example, the control unit (12) may control the power supply to the heater (18, 24) differently depending on the type of the aerosol generating article (or cartridge). More specifically, the control unit (12) can control the temperature and / or power of the heater (18, 24) based on a first temperature profile (or a first power profile) when the aerosol generating article (or cartridge) is detected as a first aerosol generating article (or a first cartridge), and can control the temperature and / or power of the heater (18, 24) based on a second temperature profile (or a second power profile) when the aerosol generating article (or cartridge) is detected as a second aerosol generating article (or a second cartridge).

[0118] According to one embodiment, the control unit (12) can control the output unit (14) based on the result detected by the sensor unit (13). For example, the control unit (12) can control the output unit (14) to visually, tactilely and / or audibly provide information that the aerosol generating device (1) is about to be terminated when the number of puffs counted using the puff sensor (e.g., the sensor unit (13)) reaches a preset number. For example, the control unit (12) can also control the output unit (14) to visually, tactilely and / or audibly provide information about the temperature of the heater (18, 24).

[0119] According to one embodiment, the control unit (12) may store and update a history of events that have occurred in the memory (17) based on the occurrence of a predetermined event. For example, the event may include operations such as detection of insertion of an aerosol generating article, initiation of heating of the aerosol generating article, detection of puff, termination of puff, detection of overheating of the heater (18, 24), detection of overvoltage application to the heater (18, 24), termination of heating of the aerosol generating article, power on / off of the aerosol generating device (1), initiation of charging of the power source (11), detection of overcharging of the power source (11), termination of charging of the power source (11), etc., performed in the aerosol generating device (1). For example, the history of events may include the date and time when the event occurred, log data corresponding to the event, etc. For example, if a given event is detection of insertion of an aerosol generating article, log data corresponding to the event may include data on the sensing value of an insertion detection sensor (e.g., sensor unit (13)). For example, if a given event is detection of overheating of a heater (18, 24), log data corresponding to the event may include data on the temperature of the heater (18, 24), the voltage applied to the heater (18, 24), the current flowing through the heater (18, 24), and the like.

[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, the control unit (12) may release restrictions on the use of at least one function (e.g., heating function) of the aerosol generating device (1) when authentication data is received from an external device via a communication link. For example, the authentication data may include the user's birthday, a unique number identifying the user, whether the user has completed authentication, etc.

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

[0123] According to one embodiment, when a request for location search of 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 haptic unit to generate vibration or control the display to output an object corresponding to the location search and the end of the search.

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

[0125] According to one embodiment, the control unit (12) may transmit data on the sensed values ​​of at least one sensor unit (13) to an external server (not shown) via a communication link, and receive and store a learning model generated by learning the sensed values ​​through machine learning, such as deep learning, from the server. The control unit (12) may perform an operation of determining a user's suction pattern, an operation of generating a temperature profile, etc., using the learning model received from the server.

[0126] Although not shown in FIG. 1, the aerosol generating device (1) may further include a power protection circuit. The power protection circuit may include at least one switching element and may cut off the power supply (11) in response to overcharging and / or overdischarging of the power supply (11). The aerosol generating device (1) may further include a connection interface, such as a USB (universal serial bus) interface, and may transmit and receive information or charge the power supply (11) by connecting to another external device through the connection interface.

[0127] The aerosol generating article referred to in the present disclosure may include at least one aerosol generating rod (e.g., a medium portion) and at least one filter rod. The heater (18) may be arranged to correspond to the at least one aerosol generating rod, and may be designed differently depending on the arrangement order and / or position of the aerosol generating rod and the filter rod. The aerosol generating rod may include at least one of nicotine, an aerosol generating material, and an additive. For example, the aerosol generating material may include glycerin (e.g., vegetable glycerin (VG)) and / or propylene glycol (PG), and may also include various other substances. For example, the additive may include a flavoring agent and / or an organic acid, and may also include various other substances. For example, the aerosol-generating rod may comprise an aerosol-generating substrate (e.g., a sheet) impregnated with a liquid non-tobacco material (e.g., an aerosol-generating material and / or nicotine), and / or may comprise a solid tobacco material (e.g., leaf tobacco, reconstituted tobacco, etc.). The tobacco material may be included in the aerosol-generating rod in various forms, such as cut tobacco, granules, powder, etc. In one embodiment, the additive of the aerosol-generating rod may include an alkaline material. Based on the alkaline material, the nicotine of the tobacco material included in the aerosol-generating rod may have an alkaline pH (e.g., pH 7.0 or higher). In this case, freebase nicotine may be released from the aerosol-generating rod even at low temperatures. In one embodiment, the aerosol-generating rod may include two or more aerosol-generating rods, and the two or more aerosol-generating rods may each include a tobacco material and / or a non-tobacco material.Meanwhile, although not shown, at least one aerosol generating rod and at least one filter rod may be individually and / or integrally wrapped by at least one wrapper. In the present disclosure, the aerosol generating article may also be referred to as a stick.

[0128] The cartridge referred to in the present disclosure may contain an aerosol-generating material having any one of the following states: a liquid state, a solid state, a gaseous state, or a gel state. The aerosol-generating material may include a liquid composition. For example, the liquid composition may be a liquid containing a tobacco-containing material including a volatile tobacco flavor component, or may be a liquid containing a non-tobacco material. Meanwhile, the cartridge may include a storage unit containing the aerosol-generating material and / or a liquid delivery means impregnating (containing) the aerosol-generating material. For example, the liquid delivery means may include a wick 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-shaped structure surrounding (or winding) the liquid delivery means, or in a structure contacting one side of the liquid delivery means. Alternatively, the cartridge heater (24) may be included in an aerosol-generating device (1) that is separable from the cartridge.

[0129] Fig. 2a illustrates an aerosol generating device (1) according to another embodiment. Fig. 2b illustrates an aerosol generating device (1) according to yet another embodiment.

[0130] According to the embodiments illustrated in FIGS. 2A and 2B, the aerosol generating device (1) may include a housing (10), a power source (11), a control unit (12), a sensor unit (13), and / or a heater (182, 183) (e.g., the heater (18) of FIG. 1). However, it will be understood by those skilled in the art related to the present embodiment that the components included in the aerosol generating device (1) are not limited to those illustrated in FIG. 2A or 2B, and that some of the components may be omitted or new configurations may be added. The aerosol generating device (1) illustrated in FIG. 2A may be referred to as an 'internal heating type' aerosol generating device that heats the inside of the aerosol generating article (2). The aerosol generating device (1) illustrated in FIG. 2B may be referred to as an 'external heating type' aerosol generating device that heats the outside of the aerosol generating article (2). In the drawings below, descriptions that overlap with those in Fig. 1 are omitted.

[0131] The housing (10) may provide a space opened upwardly to allow an aerosol-generating article (2) to be inserted. In the present disclosure, the space opened upwardly may be referred to as an insertion space. The insertion space may be formed by being recessed toward the interior of the housing (10) to a predetermined depth so that at least a portion of the aerosol-generating article (2) can be inserted. The depth of the insertion space may be longer than the length of a region of the aerosol-generating article (2) containing an aerosol-generating material 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 outside the housing (10). A user may hold the upper end of the aerosol-generating article (2) exposed to the outside in his / her mouth and inhale the aerosol.

[0132] The heater (182, 183) can heat the aerosol generating article (2).

[0133] Referring to FIG. 2a, the heater (182) may be an internal heating type heater.

[0134] The heater (182) is an example of an aerosol generator for generating an aerosol from an 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) to generate heat for heating the aerosol generating article (2).

[0135] The internal heating heater may extend upwardly in a space (i.e., an insertion space) into which the aerosol generating article (2) is inserted. For example, the internal heating heater may include a rod-shaped or needle-shaped heating element as illustrated, but may also include various heating elements such as a tubular heating element or a plate-shaped heating element. The internal heating heater may be inserted through the lower portion of the aerosol generating article (2).

[0136] The internal heating heater may include an electrical resistance heater and / or an induction heating heater.

[0137] For example, an electric resistance heater may include an electric resistance material on the inside (e.g., an inner hollow portion or inner surface) or the outside (e.g., an outer surface), and may be heated as current flows through the electric resistance material. In this case, the electric resistance heater may be electrically connected to a power source (11), and may directly generate heat by receiving current from the power source (11). In addition, the induction coil (181) may be omitted.

[0138] For example, in the case of an induction heating type heater, the aerosol generating device (1) may include an induction coil (181) that surrounds at least a portion of the internal heating type heater (e.g., is disposed externally to correspond to the length of at least a portion of the heater). In this case, a magnetic flux concentrator or the like may be further included on the outside of the induction coil (181) to increase the efficiency of induction heating. The induction heating type heater includes a susceptor and may generate heat based on a magnetic field generated from the induction coil (181). According to one embodiment, the induction heating type heater (e.g., susceptor) (or a heater module including the same) may be arranged to be detachable from the housing (10).

[0139] The heater (182) may be a multi-heater. The multi-heater may include a first heater and a second heater, and may be inserted into the aerosol generating article (2). The first heater and the second heater may be arranged side by side along the longitudinal direction. The first heater and the second heater may operate as an electrical resistance heater and / or an induction heater, and may be heated sequentially or simultaneously. In this case, the first heater and the second heater may be arranged at positions corresponding to the longitudinal positions of two or more aerosol generating rods, respectively (respectively). Alternatively, the first heater and the second heater may be arranged at positions corresponding to the longitudinal positions of a first portion and a second portion of one aerosol generating rod, respectively. Meanwhile, when the heater (182) is an induction heating type heater, the aerosol generating device (1) includes a first induction coil and a second induction coil, and the first induction coil and the second induction coil may be respectively disposed at positions corresponding to the longitudinal positions of the first heater and the second heater. Alternatively, the first heater and the second heater may respectively be disposed at positions corresponding to the longitudinal positions of the first part and the second part of one heater (182). In addition, three or more heaters and / or induction coils may be included.

[0140] The susceptor may be placed (or included) inside the aerosol generating article (2) (e.g., medium portion), and the susceptor included inside the aerosol generating article (2) may be implemented to be heated based on a magnetic field generated from an induction coil (181).

[0141] The aerosol generating device (1) includes a potential difference sensor (131) for generating a signal according to a change in the composition of the aerosol generated by the heater (182), which is an aerosol generator. The potential difference sensor (131) may be arranged on the outside of the aerosol generating article (2). The potential difference sensor (131) is arranged adjacent to an end of the aerosol generating article (2) accommodated in the receiving portion (102p).

[0142] A passage can be formed by the space between the aerosol generating article (2) accommodated in the receiving portion (102p) and the inner surface (102s) of the receiving portion (102p). The aerosol generated by the aerosol generator can flow along at least a portion of the passage.

[0143] The potential difference sensor (131) can detect changes in the composition of aerosol flowing through the passage. The potential difference sensor (131) can generate a signal by changing the potential difference according to changes in the composition of aerosol generated from an aerosol generating article (2) heated by a heater (182).

[0144] The component of the aerosol to be detected by the potential difference sensor (131) may be, for example, a nicotine component or the pH concentration (hydrogen ion concentration) of droplets included in the aerosol.

[0145] Referring to FIG. 2b, the heater (183) may be an external heating type heater.

[0146] The heater (183) is another example of an aerosol generator for generating an aerosol from an aerosol generating article (2).

[0147] The external heating heater may extend upwardly around the space into which the aerosol generating article (2) is inserted (i.e., the insertion space). For example, the external heating heater may be arranged to surround at least a portion of the insertion space. For example, the external heating heater may have a tubular shape (e.g., a cylindrical shape) having a hollow interior. The external heating heater may also have a shape having a hollow interior and surrounding the hollow interior. In this case, the external heating heater may be supported by a polyimide film. A heater supported by such a film may be referred to as a film heater. The external heating heater may be arranged to surround at least a portion of the insertion space. The external heating heater may heat the outside of the aerosol generating article (2) inserted into the hollow interior.

[0148] The external heating heater may include an electric resistance heater and / or an induction heating heater, and a description overlapping with FIG. 2A will be omitted. Meanwhile, in the case of an induction heating heater, the aerosol generating device (1) may include an external heating heater implemented as a tubular susceptor, and may include an induction coil (181) surrounding at least a portion of the external heating heater (e.g., disposed externally to correspond to the length of at least a portion of the heater). In addition, the induction coil (181) may include a fan coil. Meanwhile, when the external heating heater is an electric resistance heater, a separate induction coil (181) may be omitted since heat generation is possible through current flow on a tubular electric resistance heater (e.g., a film heater). Meanwhile, an insulating material may be disposed on the outside of the external heating heater. Through this, heat radiating from the heater (183) in an outward direction and applied to the outside of the housing (10) may be reduced.

[0149] The heater (183) may be a multi-heater, and the first heater and the second heater may be arranged side by side along the longitudinal direction to surround at least a portion of the insertion space, respectively. The first heater and the second heater may operate as an electrical resistance heater and / or an induction heating heater, and may be heated sequentially or simultaneously. Meanwhile, when the heater (183) is an induction heating heater, the aerosol generating device (1) includes a first induction coil and a second induction coil, and the first induction coil and the second induction coil may be arranged at positions corresponding to the longitudinal positions of the first heater and the second heater, respectively. Alternatively, the first heater and the second heater may be arranged at positions corresponding to the longitudinal positions of the first part and the second part of one heater (183), respectively.

[0150] Unlike as shown in FIG. 2a or FIG. 2b, the heater (182) of FIG. 2a and the heater (183) of FIG. 2b may be included together in the aerosol generating device (1). In this case, the heater (182) may heat the inside of the aerosol generating article (2), and the heater (183) may heat the outside of the aerosol generating article (2).

[0151] An air passage may be provided in the aerosol generating device (1). For example, the housing (10) may include a structure (e.g., a hole) through which air may be introduced from the outside into the housing (10). The air introduced into the housing (10) may be introduced into the aerosol generating article (2) through the lower end (i.e., the upstream side) of the aerosol generating article (2). The aerosol generated based on the heating of the aerosol generating article (2) may be inhaled into the user's oral cavity through the upper end (i.e., the downstream side) of the aerosol generating article (2) together with the introduced air.

[0152] The aerosol generating device (1) includes a potential difference sensor (131) for generating a signal according to a change in the composition of the aerosol generated by the heater (183), which is an aerosol generator. The potential difference sensor (131) may be arranged on the outside of the aerosol generating article (2). The potential difference sensor (131) is arranged adjacent to an end of the aerosol generating article (2) accommodated in the aerosol generating device (1).

[0153] A passage may be formed in the space on the outer surface of the aerosol generating article (2). The aerosol generated from the aerosol generator may flow along at least a portion of the passage.

[0154] The potential difference sensor (131) can detect changes in the composition of aerosol flowing through the passage. The potential difference sensor (131) can generate a signal by changing the potential difference according to changes in the composition of aerosol generated from an aerosol generating article (2) heated by a heater (182).

[0155] The component of the aerosol to be detected by the potential difference sensor (131) may be, for example, a nicotine component or the pH concentration (hydrogen ion concentration) of droplets included in the aerosol.

[0156] Fig. 3 illustrates an aerosol generating device (1) according to another embodiment. According to one embodiment, the aerosol generating device (1) may include a housing (10), a power source (11), a control unit (12), and / or a sensor unit (13). However, those skilled in the art will understand that the components included in the aerosol generating device (1) are not limited to those illustrated in Fig. 3, and that some of the components may be omitted or new configurations may be added. In the drawings below, any description overlapping with that in Fig. 1 will be omitted.

[0157] The housing (10) may include a structure on one side into which a cartridge (19) is inserted or mounted. In this case, the cartridge (19) may be detachably coupled to the housing (10).

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

[0159] The cartridge (19) may include a chamber (C0) containing an aerosol generating material. The chamber (C0) may contain the aerosol generating material in any one of a liquid state, a solid state, a gaseous state, or a gel state. The aerosol generating material may include a liquid composition. For example, the liquid composition may be a liquid containing a tobacco-containing material including a volatile tobacco flavor component, or may be a liquid containing a non-tobacco material.

[0160] A liquid delivery means (25) impregnating (containing) an aerosol generating material may be included in the cartridge (19). For example, the liquid delivery means (25) may impregnate an aerosol generating material supplied from the chamber (C0). Here, the liquid delivery means (25) may include a wick such as cotton fiber, ceramic fiber, glass fiber, porous ceramic, etc. Although not shown, the aerosol generating device (1) may further include a liquid delivery means. In this case, at least a portion of the first liquid delivery means of the cartridge (19) may be formed to be in contact with at least a portion of the second liquid delivery means of the aerosol generating device (1). In this case, the first liquid delivery means and the second liquid delivery means may be implemented in different forms. For example, the first liquid delivery means may include cotton fiber, and the second liquid delivery means may include porous ceramic. Alternatively, the cartridge (19) may not include a liquid delivery means, and the aerosol generating material of the cartridge (19) may be transferred to the liquid delivery means of the aerosol generating device (1).

[0161] The housing (10) and / or the cartridge (19) may be provided with airflow channels through which air flows.

[0162] For example, the housing (10) may include a structure through which outside air can be introduced into the interior of the housing (10) when the cartridge (19) is coupled. For example, an air inlet through which outside air can be introduced into the interior of the housing (10) may be formed on one side of the aerosol housing (10). The air inlet may also be formed on the lower surface of the housing (10). Outside air introduced into the interior of the housing (10) through the air inlet may pass through the cartridge (19) and then flow toward the user's oral cavity through the passage (30), which is an airflow channel. Outside air introduced through the air inlet hole may pass through the cartridge (19) and flow toward the user's oral cavity through the passage (30).

[0163] For example, a passage (30) may be included in the cartridge (19). The passage (30) may connect a chamber (e.g., an atomizing chamber) in which a cartridge heater (24) or a liquid delivery means (25) is disposed, and the outside of the housing (10) and / or the cartridge (19). More specifically, one end of the passage (30) may be opened to a chamber (e.g., an atomizing chamber) in which a cartridge heater (24) or a liquid delivery means (25) is disposed, and the other end may be in communication with a mouthpiece. The passage (30) may extend longitudinally from one side of the chamber (C0) of the cartridge (19) along the length of the cartridge (19). The passage (30) may also extend longitudinally through the chamber (C0) of the cartridge (19). The passage (30) may also communicate with a mouthpiece separately provided in the housing (10).

[0164] The cartridge heater (24) can heat the aerosol generating material contained in the cartridge (19). For example, the cartridge heater (24) may include an electrical resistance heater and / or an induction heating heater. As an example, the electrical resistance heater includes an electrically resistive material and can be heated as a current flows through the electrically resistive material. As another example, in the case of an induction heating heater, the aerosol generating device (1) may further include an induction coil (not shown) around the induction heating heater. The induction heating heater includes a susceptor and can generate heat based on a magnetic field generated from the induction coil (not shown). The cartridge heater (24) may be formed in a coil shape that surrounds (or winds) the liquid delivery means contained in the cartridge (19) and / or the aerosol generating device (1) and / or in a shape (e.g., a pattern shape) that contacts one side of the liquid delivery means.

[0165] The cartridge heater (24) may be included in the cartridge (19). If the cartridge (19) is of a form that is separable from the housing (10), the cartridge heater (24) may be separable from the aerosol generating device (1) together with the cartridge (19). Differently from the drawing, 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). Meanwhile, the cartridge heater (24) may be included in a form that is separable from the housing (10) separately (i.e., independently) from the cartridge (19). In other words, the cartridge heater (24) may or may not be separated from the housing (10) regardless of whether the cartridge (19) is separated.

[0166] An aerosol can be generated based on the heat generation of the cartridge heater (24). As the liquid delivery means (25) is heated by the cartridge heater (24), an aerosol can be generated. For example, as an aerosol generating material impregnated in the liquid delivery means (25) is heated by the cartridge heater (24), vapor can be generated from the aerosol generating material, and as the generated vapor is mixed with the outside air introduced into the cartridge (19), an aerosol can be generated. The aerosol generated by the cartridge heater (24) can be inhaled into the user's oral cavity through the passage (30).

[0167] The cartridge (19) may be formed integrally with the aerosol generating device (1) (e.g., housing (10)). The cartridge (19) may be formed so that it cannot be separated from the aerosol generating device (1) by the user. In this case, the cartridge (19) and / or the aerosol generating device (1) may include at least one liquid delivery means, and an aerosol is generated based on heating the liquid delivery means (25) by a cartridge heater (24) included in the aerosol generating device (1) or the cartridge (19), and the generated aerosol can be inhaled into the user's oral cavity through a passage (30).

[0168] A cartridge heater (24) and a liquid delivery means (25) are other examples of an aerosol generator. The aerosol generator may include an aerosol generation chamber (C1) for generating an aerosol. At least one of the cartridge heater (24) and the liquid delivery means (25) may be located in the aerosol generation chamber (C1).

[0169] An aerosol generating device (1) includes a passage (30). The passage (30) can extend along the length of the aerosol generating device (1). One end of the passage (30) is connected to an aerosol generating chamber (C1), and the other end of the passage (30) is open to the outside. Aerosol generated in the aerosol generator can be discharged to the outside through the passage (30).

[0170] The aerosol generating device (1) includes a potential difference sensor (131) for generating a signal according to a change in the composition of the aerosol generated by the cartridge heater (24). At least a portion of the potential difference sensor (131) may be placed in the passage (30).

[0171] Aerosol generated from an aerosol generator can flow along a passage (30). A potential difference sensor (131) can detect changes in the components of the aerosol flowing along the passage (30). The potential difference sensor (131) can generate a signal by changing the potential difference according to changes in the components of the aerosol generated in the aerosol generation chamber (C1).

[0172] The component of the aerosol to be detected by the potential difference sensor (131) may be, for example, a nicotine component or the pH concentration of the droplets contained in the aerosol.

[0173] Figure 4 illustrates an aerosol generating device (1) according to another embodiment.

[0174] According to the embodiment illustrated in FIG. 4, the aerosol generating device (1) may include a housing (10), a power source (11), a control unit (12), a sensor unit (13), and / or a heater (183, 24) (e.g., the heater (18, 24) of FIG. 1). However, those skilled in the art related to the present embodiment will understand that the components included in the aerosol generating device (1) are not limited to those illustrated in FIG. 4, and that some of the components may be omitted or new configurations may be added. In the drawings below, any description overlapping with that of FIG. 1 will be omitted.

[0175] The housing (10) may provide an upper-open space (hereinafter, referred to as an insertion space) into which an aerosol-generating article (2) may be inserted. The insertion space may be formed by being recessed toward the interior of the housing (10) to a predetermined depth so that at least a portion of the aerosol-generating article (2) may 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 outside the housing (10).

[0176] Unlike the illustrated embodiment, the cartridge (19) may provide an insertion space for accommodating the aerosol generating article (2). In this case, the insertion space may be formed by being recessed toward the interior of the cartridge (19) to a predetermined depth so that at least a portion of the aerosol generating article (2) can be inserted. The lower end of the aerosol generating article (2) may be inserted into the interior of the cartridge (19), and the upper end of the aerosol generating article (2) may protrude outside the cartridge (19). Furthermore, in this case, the aerosol generating device (1) may not include a heater (183).

[0177] The depth of the insertion space may be greater than the length of the area containing the aerosol-generating material and / or medium in the aerosol-generating article (2). The user can inhale air by placing the upper end of the aerosol-generating article (2) exposed to the outside in the mouth.

[0178] The heater (183) can heat the aerosol generating article (2). The heater (183) can extend upwardly around the space (i.e., the insertion space) into which the aerosol generating article (2) is inserted. For example, the heater (183) can be in the form of a tube (e.g., a cylindrical shape) having a hollow space inside. The heater (183) can have a shape that includes a hollow space on the inside and surrounds the hollow space. In this case, the heater (183) can be supported by a polyimide film. A heater supported by such a film can be referred to as a film heater. The heater (183) can be arranged to surround at least a portion of the insertion space. The heater (183) can heat the outside of the aerosol generating article (2) inserted into the hollow space. In the present disclosure, the heater (183) may be referred to as an external heating type heater that heats the outside of the aerosol generating article (2). Meanwhile, an insulating material may be placed on the outside of the heater (183). Through this, the heat radiating from the heater (183) in an outward direction and applied to the outside of the housing (10) can be reduced.

[0179] The heater (183) may include an electric resistance heater and / or an induction heating heater.

[0180] For example, an electrical resistance heater includes an electrically resistive material and can be heated as current flows through the electrically resistive material. In this case, the electrical resistance heater can be electrically connected to a power source (11) and can directly generate heat by receiving current from the power source (11).

[0181] For example, in the case of an induction heating type heater, the aerosol generating device (1) may further include an induction coil (not shown) that surrounds at least a portion of the heater (183) (e.g., is disposed externally to correspond to the length of at least a portion of the heater (183). In this case, a magnetic flux concentrator or the like may further be included on the outside of the induction coil (not shown) to increase the efficiency of induction heating. The induction heating type heater includes a susceptor and can generate heat based on a magnetic field generated from the induction coil (not shown).

[0182] According to one embodiment, the heater (183) may be a multi-heater. The multi-heater may include a first heater and a second heater, and may be inserted into the aerosol generating article (2). The first heater and the second heater may be arranged side by side along the longitudinal direction. The first heater and the second heater may operate as an electrical resistance heater and / or an induction heater, and may be heated sequentially or simultaneously. In this case, the first heater and the second heater may be arranged at positions corresponding to the longitudinal positions of two or more aerosol generating rods, respectively (respectively). Alternatively, the first heater and the second heater may be arranged at positions corresponding to the longitudinal positions of a first portion and a second portion of one aerosol generating rod, respectively. Meanwhile, when the heater (183) is an induction heating type heater, the aerosol generating device (1) includes a first induction coil and a second induction coil, and the first induction coil and the second induction coil may be respectively disposed at positions corresponding to the longitudinal positions of the first heater and the second heater. Alternatively, the first heater and the second heater may respectively be disposed at positions corresponding to the longitudinal positions of the first part and the second part of one heater (183). In addition, three or more heaters and / or induction coils may be included.

[0183] Unlike the drawing, the aerosol generating device (1) may not include a heater (183). The aerosol generating article (2) may be heated directly or indirectly by the cartridge heater (24), or may not be substantially heated. Indirect heating may mean that the aerosol generating article (2) is heated by receiving heat contained in the aerosol during the process in which the aerosol generated by the cartridge heater (24) passes through the aerosol generating article (2). In this case, the aerosol generating device (1) may be referred to as a non-heating (or indirect heating) aerosol generating device. The aerosol generating rod of the aerosol generating article (2) may include an additive such as a basic substance. Based on this basic substance, the nicotine contained in the aerosol generating rod may have a basic pH (e.g., pH 7.0 or higher). This basic nicotine can flow into the user's oral cavity together with the aerosol flowing into the aerosol generating article (2) from the cartridge (19) described below.

[0184] Unlike the illustrated embodiment, the heater (183) may include an internal heating heater. For example, the internal heating heater may include various heating elements, such as a rod-shaped or tubular heating element, a plate-shaped heating element, or a needle-shaped heating element. The internal heating heater may be inserted through the lower portion of the aerosol generating article (2) and may be configured to heat the inside of the aerosol generating article (2).

[0185] The cartridge (19) can be detachably coupled to the housing (10). For example, a space may be formed on one side of the housing (10), and at least a portion of the cartridge (19) may be inserted into the space formed on one side of the housing (10) so that the cartridge (19) can be mounted on the housing (10). Alternatively, the cartridge (19) may be formed integrally with the housing (10).

[0186] The aerosol generating device (1) and / or the cartridge (19) may be provided with an airflow channel through which air flows. For example, the housing (10) may include a structure through which air can be introduced from the outside into the interior of the housing (10) when the cartridge (19) is inserted. The introduced air can pass through the cartridge (19) and enter the insertion space through the passage (30) and flow into the user's oral cavity. The passage (30) may include various structures to reduce residual droplets or facilitate airflow.

[0187] In FIG. 4, the cartridge (19) is positioned laterally relative to the aerosol-generating article (2), and the passage (30) is formed from the side of the aerosol-generating article (2) to the lower end (i.e., upstream side) of the aerosol-generating article (2), but the positions of the cartridge (19) and the passage (30) are not limited thereto. For example, the cartridge (19) may be positioned adjacent to the lower end (i.e., upstream side) of the aerosol-generating article (2), and in this case, the passage (30) may be formed in a substantially straight shape to connect the cartridge (19) and the lower end (i.e., upstream side) of the aerosol-generating article (2).

[0188] The cartridge (19) may include a chamber (C0) containing an aerosol generating material, a cartridge heater (24), and / or a liquid delivery means impregnating (containing) the aerosol generating material. The liquid delivery means may impregnate the aerosol generating material supplied from the chamber (C0). For example, the liquid delivery means may include a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0189] The cartridge heater (24) can heat the aerosol generating material contained in the cartridge (19). For example, the cartridge heater (24) can include an electrical resistance heater and / or an induction heater.

[0190] For example, an electrical resistance heater includes an electrically resistive material and can be heated as a current flows through the electrically resistive material. As another example, in the case of an induction heating type heater, the aerosol generating device (1) may further include an induction coil (not shown) around the induction heating type heater. The induction heating type heater includes a susceptor and can generate heat based on a magnetic field generated from the induction coil (not shown). The cartridge heater (24) may be formed in a coil shape that surrounds (or winds) a liquid delivery means and / or in a shape (e.g., a pattern shape) that contacts one side of the liquid delivery means.

[0191] Unlike the illustration, the cartridge heater (24) may 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) and the cartridge heater (24) may be separated by removing the cartridge (19).

[0192] An aerosol may be generated based on the heat generated by the cartridge heater (24). For example, as an aerosol generating material impregnated in a liquid delivery means is heated by the cartridge heater (24), vapor may be generated from the aerosol generating material, and as the generated vapor is mixed with outside air introduced into the cartridge (19), an aerosol may be generated. The aerosol generated by the cartridge heater (24) may be introduced into the aerosol generating article (2) through the passage (30). Tobacco or a flavoring material may be added to the aerosol while the aerosol passes through the aerosol generating article (2), and the aerosol added with the tobacco or flavoring material may be inhaled into the user's oral cavity through one end of the aerosol generating article (2).

[0193] A cartridge heater (24) may be an example of an aerosol generator. The aerosol generated by the cartridge heater (24) may flow along a passage (30). The aerosol generating device (1) includes a potential difference sensor (131a) for generating a signal according to a change 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 passage (30). The potential difference sensor (131a) can generate a signal by changing the potential difference according to changes in the composition of the aerosol generated by the cartridge heater (24).

[0195] Heater (183) may be another example of an aerosol generator. Heater (183) may heat an aerosol generating article (2) to generate an aerosol.

[0196] The aerosol generating device (1) includes a potential difference sensor (131b) for generating a signal according to a change in the composition of the aerosol generated from the aerosol generating article (2) heated by the heater (183).

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

[0198] An additional passage may be formed in the space on the outer surface of the aerosol-generating article (2). The aerosol generated in the aerosol-generating article (2) may flow along at least a portion of the additional passage. For example, when a user inhales the aerosol-generating article (2) by putting it in his / her mouth, a mainstream flow of aerosol may be formed that penetrates the aerosol-generating article (2) and a sidestream flow of aerosol may be formed that flows along the outer surface of the aerosol-generating article (2).

[0199] The potential difference sensor (131b) can detect changes in the composition of the aerosol flowing through the additional passage on the outer surface of the aerosol generating article (2). The potential difference sensor (131) can generate a signal by changing the potential difference according to changes in the composition of the aerosol generated from the aerosol generating article (2) heated by the heater (182).

[0200] Fig. 5 is a longitudinal cross-sectional view of an aerosol generating device (1) according to another embodiment.

[0201] An aerosol generating device (1) according to an embodiment illustrated in FIG. 5 includes an aerosol generator for generating an aerosol, and a potential difference sensor (130) for generating a signal by a potential difference that changes according to a change in the component of the aerosol generated by the aerosol generator.

[0202] The aerosol generator includes an aerosol generating aerosol chamber (C1) in which an aerosol is generated, a liquid delivery means (25) located inside the aerosol generating chamber (C1), and a cartridge heater (24) that heats the liquid delivery means (25) to generate an aerosol.

[0203] The aerosol generating device (1) includes a passage (31) for discharging aerosol generated in the aerosol generator to the outside. A potential difference sensor (130) is placed in the passage (31).

[0204] The aerosol generating device (1) may further include a supply passage (32) for supplying air to the aerosol generator, and an upstream potential difference sensor (230) for generating a signal by a potential difference that changes according to a change in the composition of the aerosol generated from the aerosol generator.

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

[0206] When a user performs an inhalation motion, the aerosol generated in the aerosol generation chamber (C1) can flow through the passage (31) of the aerosol generator and be discharged to the outside. The user can inhale the aerosol by placing the mouthpiece (10 m) provided at one end of the aerosol generator in his / her mouth.

[0207] As the aerosol generator operates, the components contained in the aerosol may change. The potential difference sensor (130) and the upstream potential difference sensor (230) can detect changes in the components of the aerosol. For example, signals from the potential difference sensor (130) and the upstream potential difference sensor (230) may be generated as the potential difference between the potential difference sensor (130) and the upstream potential difference sensor (230) changes depending on the pH concentration of the aerosol.

[0208] Each of the potentiometric sensor (130) and the upstream potentiometric sensor (230) may include a reference electrode and a measurement electrode. For example, the reference electrode and the measurement electrode may be manufactured using any one or a combination of a sensing material such as silver chloride or potassium chloride, a glass electrode, indium tin oxide (ITO), or an ion sensitive field effect transistor (ISFET).

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

[0210] When the aerosol comes into contact with each of the potential difference sensor (130) and the upstream potential difference sensor (230), droplets may be generated on the surfaces of each of the potential difference sensor (130) and the upstream potential difference sensor (230). To generate droplets, each surface of the potential difference sensor (130) and the upstream potential difference sensor (230) may be maintained at a temperature lower than the temperature of the aerosol.

[0211] A potential difference of an electric signal may be generated between a reference electrode and a measurement electrode due to a change in the composition of a droplet attached to each surface of a potentiometric sensor (130) and an upstream potentiometric sensor (230). Each of the potentiometric sensor (130) and the upstream potentiometric sensor (230) may generate a signal according to a change in the potential difference between the reference electrode and the measurement electrode. A pH concentration may be detected based on each signal of the potentiometric sensor (130) and the upstream potentiometric sensor (230).

[0212] Each of the potential difference sensor (130) and the upstream potential difference sensor (230) may further include one or a combination of a detection circuit for detecting a generated signal and an amplifier circuit for amplifying a signal detected by the detection circuit.

[0213] According to the aerosol generating device according to the above-described embodiment, the potential difference of each of 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 the signals of each of the potential difference sensor (130) and the upstream potential difference sensor (230). Therefore, the change in the composition of the aerosol generated by the aerosol generating device (1) can be detected precisely and quickly.

[0214] Fig. 6 is a longitudinal cross-sectional view of a portion of an aerosol generating device (1) according to another embodiment.

[0215] An aerosol generating device (1) according to an embodiment shown in Fig. 6 includes an aerosol generator (241) for generating an aerosol, and a potential difference sensor (131) for generating a signal by a potential difference that changes according to a change in the composition of the aerosol generated by the aerosol generator (241). The aerosol generating device (1) may include a passage (151, 152, 153) for supplying external air to the aerosol generator (241).

[0216] Elements such as an aerosol generator (241), passages (151, 152, 153), and a potential difference sensor (131) can be arranged inside the housing (10). When a part of the housing (10) is opened by the cover (104) moving relative to the housing (10), a part of the stick (S) is inserted into the housing (10) and another part of the stick (S) is exposed to the outside of the housing (10).

[0217] The aerosol generator (241) includes a receiving portion (102p) including an insertion space (102), and a heater (240) disposed in the receiving portion (102p) to generate heat for heating the stick (S).

[0218] The stick (S) is heated by a heater (240) to generate an aerosol. The stick (S) may be referred to as a cigarette. The stick (S) is an example of an aerosol generating article.

[0219] 'Aerosol' can mean a gas created by mixing air with vapor generated by heating an aerosol-generating substance, or by mixing air with fine-sized liquid particles that have been atomized from an aerosol-generating substance.

[0220] The embodiments are not limited to the method of generating an aerosol by heating the stick (S) of the aerosol generator (241) illustrated in FIG. 6. The aerosol generator (241) may generate an aerosol, for example, by using a heater inserted into the stick (S) to generate heat, by heating a liquid aerosol generating substance, or by generating an aerosol from a liquid aerosol generating substance through ultrasonic vibration.

[0221] The user can inhale the aerosol by holding the stick (S) protruding from the outside of the housing (10) in their mouth. The action of the user inhaling the stick (S) in their mouth may be referred to as a "puff action." When the puff action is performed, a flow of air is generated through the stick (S), thereby allowing the aerosol generated from the stick (S) to be delivered to the user.

[0222] While the puff action is being performed, external air can be supplied to the stick (S). As illustrated in FIG. 6, a state in which a portion of the stick (S) is inserted into the housing (10) corresponds to a state in which the cover (104) opens a portion of the housing (10). External air of the housing (10) can be introduced into the interior of the housing (10) through the gap between the cover (104) and the housing (10).

[0223] The passages (151, 152, 153) are fluidly connected to the insertion space (102) of the receiving portion (102p) through the inlet passage (151), the intermediate passage (152), and the supply passage (153) that allow external air to flow into the interior of the housing (10). The air from the outside of the housing (10) can be supplied to the stick (S) of the insertion space (102) by passing through the inlet passage (151), the intermediate passage (152), and the supply passage (153) in sequence.

[0224] The potential difference sensor (131) may be placed in the supply passage (153). The electrode (131e) of the potential difference sensor (131) may protrude toward the supply passage (153). The potential difference sensor (131) may detect a change in the composition of the aerosol generated from the aerosol generator (241). The potential difference of the potential difference sensor (131) may change according to a change in the composition of the aerosol generated from the stick (S) heated by the heater (182), thereby allowing the potential difference sensor (131) to generate a signal.

[0225] For example, the component of the aerosol to be detected by the potential difference sensor (131) may be a nicotine component or the pH concentration (hydrogen ion concentration) of droplets included in the aerosol.

[0226] According to the aerosol generating device (1) according to the above-described embodiment, a signal is generated by changing the potential difference of the potential difference sensor (131) according to changes in the components of the aerosol. Accordingly, changes in the components of the aerosol generated by the aerosol generating device (1) can be detected precisely and quickly.

[0227] Fig. 7 is a cross-sectional view of an aerosol generating device (1) according to another embodiment.

[0228] An aerosol generating device (1) according to an embodiment illustrated in FIG. 7 includes an aerosol generator, a passage (150), and a potential difference sensor (131) disposed in the passage (150) for generating a signal by a potential difference that changes according to a change in the composition of an aerosol generated by the aerosol generator. Air can be supplied to the aerosol generator through the passage (150).

[0229] The aerosol generator includes a receiving portion (102p) including a receiving space for receiving a stick (S), and a heater (18) at least partially positioned inside the receiving portion (102p) to generate heat for heating the stick (S). The aerosol generating device (1) may include a power source (11) for supplying power to the heater (18).

[0230] As illustrated in Fig. 7, when a stick (S) is inserted into a receiving portion (102p), a portion of a heater (18) can be inserted into an end of the stick (S). Protrusions (102g) protruding toward the end of the stick (S) are formed on the bottom surface of the receiving space inside the receiving portion (102p). The protrusions (102g) can perform a function of supporting the end of the stick (S) inserted into the receiving portion (102p).

[0231] In addition, air introduced into the receiving portion (102p) from the outside can be supplied to the end of the stick (S) through the space between the protrusions (102g). Since the protrusions (102g) are arranged to be spaced apart from each other, air introduced into the receiving portion (102p) can be supplied to the end of the stick (S) through the spaced space between the protrusions (102g).

[0232] The passage (150) can be formed by a space between the inner surface (102s) of the receiving portion (102p) and the outer surface of the stick (S). One end of the passage (150) is opened toward the outside of the aerosol generating device (1), and the other end of the passage (150) is opened toward the end of the stick (S) into which the heater (18) is inserted. The passage (150) can be extended along the extension direction of the aerosol generating device (1). Therefore, air introduced into the receiving portion (102p) from the outside can be supplied to the end of the stick (S) through the passage (150).

[0233] The potential difference sensor (131) may be placed adjacent to the other end of the passage (150) open toward the end of the stick (S). An electrode (131e) of the potential difference sensor (131) may protrude toward the passage (150). The potential difference sensor (131) may detect a change in the composition of the aerosol generated from the stick (S). The potential difference of the potential difference sensor (131) may change according to a change in the composition of the aerosol generated from the stick (S) heated by the heater (182), thereby allowing the potential difference sensor (131) to generate a signal.

[0234] The embodiments are not limited by the placement location 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 a spaced space between the protrusions (102g).

[0235] According to the aerosol generating device (1) according to the above-described embodiment, a signal is generated by changing the potential difference of the potential difference sensor (131) according to changes in the components of the aerosol. Accordingly, changes in the components of the aerosol generated by the aerosol generating device (1) can be detected precisely and quickly.

[0236] Fig. 8 is a cross-sectional view of an aerosol generating device (1) according to another embodiment.

[0237] The aerosol generating device (1) according to the embodiment illustrated in FIG. 8 is generally similar in configuration to the aerosol generating device (1) according to the embodiment illustrated in FIG. 7, but the structure of the passage (150) is modified.

[0238] In the aerosol generating device (1) according to the embodiment illustrated in Fig. 8, the passage (150) is arranged inside the receiving portion (102p). When the stick (S) is inserted into the receiving portion (102p), the inner surface of the receiving portion (102p) can support the outer surface of the stick (S) inserted into the receiving portion (102p). There is no space between the inner surface of the receiving portion (102p) and the stick (S). Therefore, unlike the aerosol generating device (1) according to the embodiment illustrated in Fig. 7, in the aerosol generating device (1) according to the embodiment illustrated in Fig. 8, air does not flow in the space between the inner surface of the receiving portion (102p) and the stick (S).

[0239] A passage (150) is arranged inside the receiving portion (102p) and extends in a long direction along the direction in which the aerosol generating device (1) extends. One end of the passage (150) is opened toward the outside of the aerosol generating device (1), and the other end of the passage (150) is opened toward the end of the stick (S) into which the heater (18) is inserted. Therefore, air from outside the aerosol generating device (1) can be supplied to the end of the stick (S) through the passage (150).

[0240] The receiving portion (102p) can be manufactured, for example, by an injection molding process that injects resin or molten metal into a mold and hardens it. The passage (150) can be formed based on the shape of a passage prepared in advance in the mold during the injection molding process. As another example, a method may be used in which the receiving portion (102p) is prepared and then a hole is drilled in the receiving portion (102p) to form the passage (150).

[0241] The potential difference sensor (131) may be placed adjacent to the other end of the passage (150) open toward the end of the stick (S). An electrode (131e) of the potential difference sensor (131) may protrude toward the passage (150). The potential difference sensor (131) may detect a change in the composition of the aerosol generated from the stick (S). The potential difference of the potential difference sensor (131) may change according to a change in the composition of the aerosol generated from the stick (S) heated by the heater (18), thereby allowing the potential difference sensor (131) to generate a signal.

[0242] The embodiments are not limited by the placement location 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 the protrusions (102g).

[0243] According to the aerosol generating device (1) according to the above-described embodiment, a signal is generated by changing the potential difference of the potential difference sensor (131) according to changes in the components of the aerosol. Accordingly, changes in the components of the aerosol generated by the aerosol generating device (1) can be detected precisely and quickly.

[0244] Fig. 9 is a cross-sectional view of an aerosol generating device (1) according to another embodiment.

[0245] An aerosol generating device (1) according to an embodiment illustrated in FIG. 9 includes an aerosol generator and a potential difference sensor (131) for generating a signal by a potential difference that changes according to a change in the composition of the aerosol generated by the aerosol generator.

[0246] The aerosol generator includes a receiving portion (102p) including a receiving space for receiving a stick (S), and a heater (18) at least partially supported by the receiving portion (102p) to generate heat for heating the stick (S).

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

[0248] A cartridge (19) may be coupled to one side of a receiving portion (102p) that accommodates a stick (S). The cartridge (19) is another example of an aerosol generator. The cartridge (19) may 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 passage (150) of the receiving portion (102p).

[0249] One end of the passage (150) is open toward the stick (S). The other end of the passage (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 stick (S) through the passage (150). For example, when the aerosol generating device (1) operates to heat only the stick (S) while the cartridge (19) is stopped, air can be supplied to the passage (150) from the cartridge (19).

[0250] The cartridge (19) may include a chamber (C0) therein. The chamber (C0) may store an aerosol generating material in any one of a liquid state, a solid state, a gaseous state, or a gel state.

[0251] With the cartridge (19) inserted into the housing (10), outside air can be introduced into the interior of the housing (10). The outside air can be introduced into the aerosol generation chamber (C1) inside the cartridge (19) through the inlet (19i) of the cartridge (19).

[0252] The cartridge (19) may include a cartridge heater (24) for heating an aerosol generating material in a chamber (C0) containing the aerosol generating material. A liquid delivery means (25) impregnating (containing) the aerosol generating material may be disposed inside the chamber (C0).

[0253] The cartridge (19) can generate an aerosol. As the liquid delivery means (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 pass through the outlet (19e) and the passage (150) to be delivered to the stick (S).

[0254] According to the aerosol generating device (1) according to the above-described embodiment, when the user performs an inhalation motion, the aerosol generated in the cartridge (19) can pass through the passage (150) and then be supplied to the user.

[0255] A potential difference sensor (131) is placed in a receiving portion (102p). An electrode (131e) of the potential difference sensor (131) may be exposed toward a passage (150) of the receiving portion (102p). The arrangement structure of the electrode (131e) of the potential difference sensor (131) may be modified. For example, at least a portion of the electrode (131e) of the potential difference sensor (131) may protrude toward the interior of the passage (150).

[0256] The embodiments are not limited by the arrangement position of the potential difference sensor (131) illustrated in FIG. 9. For example, the potential difference sensor (131) may be arranged in the cartridge (19). That is, by modifying the structure illustrated in FIG. 9, the potential difference sensor (131) may be arranged in the outlet (19e) and / or the inlet (19i).

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

[0258] The potential difference sensor (131) can detect changes in the components of the aerosol generated from the stick (S) and / or the aerosol generated from the cartridge (19). The potential difference of the potential difference sensor (131) changes according to changes in the components of the aerosol generated from the stick (S) heated by the heater (18) and / or the aerosol generated from the cartridge (19), thereby allowing the potential difference sensor (131) to generate a signal.

[0259] According to the aerosol generating device (1) according to the above-described embodiment, a signal is generated by changing the potential difference of the potential difference sensor (131) according to changes in the components of the aerosol. Accordingly, changes in the components of the aerosol generated by the aerosol generating device (1) can be detected precisely and quickly.

[0260] Fig. 10 is a perspective view of a potential difference sensor (50) that can be applied to the aerosol generating device according to the embodiments illustrated in Figs. 1 to 9. Fig. 10 schematically illustrates the structure of a potential difference sensor (50) that can be placed in a passage of an aerosol generating device.

[0261] At least a portion of the potential difference sensor (50) may be positioned in a passage of an aerosol generating device. Aerosol generated by the aerosol generator may flow through the passage.

[0262] The potential difference sensor (50) can perform the function of contacting with an aerosol to liquefy a portion of the aerosol and the function of contacting with the generated droplets to generate a signal. In order to generate the droplets, the surface of the potential difference sensor (50) can be maintained at a temperature lower than the temperature of the aerosol. For example, at least a portion of the potential difference sensor (50) can be connected to a thermally conductive material exposed toward the outside of the aerosol generating device, and the potential difference sensor (50) can be maintained at a temperature lower than the temperature of the aerosol by the thermally conductive material in contact with the outside air.

[0263] The potential difference sensor (50) includes a signal generating unit (52) capable of generating a signal. The signal generating unit (52) may include a mesh material that allows gaseous aerosol to pass through. The mesh may have a net shape having fine holes (52m) through which the aerosol can pass. For example, the signal generating unit (52) may include a metal mesh material. The signal generating unit (52) may be supported by a frame (58). A wire (52f) for transmitting an electric signal is electrically connected to the signal generating unit (52).

[0264] Aerosol flowing through the passage can pass through the microscopic holes (52 m) of the signal generating unit (52). As the aerosol passes through the microscopic holes (52 m) of the signal generating unit (52), a portion of the aerosol liquefies and creates droplets. The droplets created by the liquefaction of the aerosol attach to the surface of the signal generating unit (52).

[0265] The components of droplets generated from the aerosol change depending on the change in the components contained in the aerosol. The potential difference sensor (50) can detect the change in the components of the droplets. When a droplet is attached to the signal generating unit (52), a potential difference in the signal generating unit (52) is generated, thereby generating a signal from the potential difference sensor (50). For example, a signal from the potential difference sensor (50) can be generated by changing the potential difference in the signal generating unit (52) depending on the pH concentration of the droplet.

[0266] The signal generation unit (52) may include, for example, a reference electrode and a measurement electrode.

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

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

[0269] A potential difference in an electric signal between a reference electrode and a measurement electrode may occur due to a change in the composition of a droplet in contact with a signal generation unit (52). The signal generation unit (52) may generate a signal according to a change in the potential difference between the reference electrode and the measurement electrode. The pH concentration of the droplet may be detected based on the signal of the signal generation unit (52).

[0270] The potential difference sensor (50) may further include a cleaning device for removing droplets and / or foreign substances attached to the potential difference sensor (50). After the aerosol generating operation of the aerosol generating device and / or the user's inhalation operation is completed, the cleaning device may remove the droplets and / or foreign substances from the potential difference sensor (50).

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

[0272] Electricity can be supplied to the cleaning device through a wire (52f) connected to the frame (58). When an electric signal is applied to the cleaning device, the piezoelectric actuator or motor vibrates, and the vibration is transmitted to the signal generating unit (52). When the signal generating unit (52) vibrates, droplets and / or foreign substances attached to the signal generating unit (52) can be separated from the signal generating unit (52).

[0273] FIG. 11 is a flowchart showing an example of the operation of an aerosol generating device according to various embodiments.

[0274] The operation of the aerosol generating device illustrated in Fig. 11 may be for responding to a state in which, for example, the aerosol generating material contained in the aerosol generating article, the medium of the cartridge, or the aerosol generating material is all exhausted, and the aerosol generating operation is not smooth.

[0275] An example of the operation of the aerosol generating device includes a detection step (S100) using a potentiometric sensor to detect changes in the composition of the aerosol while the aerosol generating device is operating.

[0276] In the detection step (S100) using a potentiometric sensor, a potential difference in the potentiometric sensor may be generated due to a change in the components of the aerosol and / or droplets coming into contact with the potentiometric sensor, thereby generating a signal. For example, the potentiometric sensor may detect the pH concentration of droplets generated from the aerosol by measuring a change in the potential difference.

[0277] After the detection step (S100) using a potentiometric sensor, a step (S110) of detecting that the aerosol generating substance is exhausted is performed based on a signal from the potentiometric sensor. In the step (S110) of detecting that the aerosol generating substance is exhausted, the exhaustion of the aerosol generating substance can be detected based on a change in a predetermined aerosol component related to the exhaustion of the aerosol generating substance. For example, when the nicotine component of the aerosol or the pH concentration of the droplets included in the aerosol decreases below a predetermined reference value based on the result detected by the potentiometric sensor, it can be determined that the aerosol generating substance is exhausted.

[0278] In the step (S110) of detecting that the aerosol generating material is exhausted, if it is detected that the aerosol generating material is exhausted, the step (S120) of stopping the aerosol generator of the aerosol generating device may be executed. According to the step (S120) of stopping the aerosol generator, the operation of the aerosol generator that generates the aerosol may be stopped, thereby stopping the generation of the aerosol.

[0279] A step for notifying a user that the aerosol generating substance has been exhausted may be performed after or simultaneously with the step of stopping the aerosol generator (S120). The step for notifying a user that the aerosol generating substance has been exhausted may be performed by, for example, displaying information on a display device, lighting an indicator lamp, outputting an audio signal, or outputting vibration feedback.

[0280] According to the operation of the aerosol generating device according to the above-described embodiment, a situation in which an aerosol generating substance is exhausted can be quickly and precisely detected without having to install an expensive sensor for detecting the amount of the aerosol generating substance in the aerosol generating device, and the operation of the aerosol generating device can be efficiently controlled based on the detection result.

[0281] FIG. 12 is a flowchart showing another example of the operation of an aerosol generating device according to various embodiments.

[0282] The operation of the aerosol generating device illustrated in FIG. 12 may be intended to detect a situation in which the aerosol generating device is operating abnormally. Abnormal operations of the aerosol generating device may include, for example, overheating of the heater, dry puffs in which the heater heating operation is performed while the aerosol generating substance in the cartridge is exhausted, abnormal heating in which the heating temperature by the heater does not reach a predetermined reference temperature in an excessively low temperature environment, use of an aerosol generating article that is not permitted to be used in an aerosol generating device, reuse of an aerosol generating article that has already been used to generate an aerosol and is then used again, and / or use of a non-conforming product that includes an aerosol generating substance that is not permitted in an aerosol generating device.

[0283] Another example of the operation of the aerosol generating device includes a detection step (S200) using a potentiometric sensor to detect changes in the composition of the aerosol while the aerosol generating device is operating.

[0284] In the detection step (S200) using a potentiometric sensor, a potential difference in the potentiometric sensor may be generated due to a change in the components of the aerosol and / or droplets coming into contact with the potentiometric sensor, thereby generating a signal. For example, the potentiometric sensor may detect the pH concentration of droplets generated from the aerosol by measuring a change in the potential difference.

[0285] After the detection step (S200) using the potential difference sensor, a step (S210) is executed to detect abnormal operation of the aerosol generating device based on the signal of the potential difference sensor.

[0286] In the step (S210) of detecting that an abnormal operation of an aerosol generating device is in progress, the abnormal operation can be detected based on a change in a predetermined aerosol component related to the abnormal operation. For example, based on a result detected by a potential difference sensor, it can be determined that the abnormal operation is in progress when the nicotine component of the aerosol or the pH concentration of the droplets contained in the aerosol deviates from a predetermined range.

[0287] In the step (S210) of detecting that the aerosol generator is operating abnormally, if it is detected that the aerosol generator is operating abnormally, the step (S220) of stopping the aerosol generator of the aerosol generator may be executed. According to the step (S220) of stopping the aerosol generator, the operation of the aerosol generator may be stopped, thereby stopping the generation of aerosol.

[0288] A step for notifying a user of the occurrence of an abnormal operation may be executed after the step of stopping the aerosol generator (S220) or simultaneously with the step of stopping the aerosol generator (S220). The step for notifying a user of the occurrence of an abnormal operation may be executed by, for example, displaying information guiding the 'use of permitted items' on a display device, lighting an indicator lamp, outputting voice guidance guiding the 'use of permitted items', or outputting vibration feedback.

[0289] According to the operation of the aerosol generating device according to the above-described embodiment, various abnormal operation situations of the aerosol generating device can be detected quickly and precisely by utilizing a potential difference sensor.

[0290] FIG. 13 is a flowchart illustrating another example of the operation of an aerosol generating device according to various embodiments.

[0291] The operation of the aerosol generating device illustrated in FIG. 13 may relate to, for example, adjusting the temperature profile of the aerosol generator in response to the type of aerosol generating article mounted on 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 relate to adjusting the temperature profile of the aerosol generator in response to the progression of the inhalation time during which the aerosol inhalation action takes place.

[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 while the aerosol generating device is operating.

[0293] In the detection step (S300) using a potentiometric sensor, a potential difference in the potentiometric sensor is generated due to a change in the components of the aerosol and / or droplets coming into contact with the potentiometric sensor, thereby allowing the potentiometric sensor to generate a signal. For example, the potentiometric sensor can detect the pH concentration of droplets generated from the aerosol by measuring a change in the potential difference.

[0294] After the detection step (S300) using a potentiometric sensor, a temperature profile adjustment step (S310) is performed. In the temperature profile adjustment step (S310), a temperature profile related to various parameters for controlling an aerosol generator can be adjusted based on the results detected in the detection step (S300) using the potentiometric sensor.

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

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

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

[0298] According to the operation of the aerosol generating device according to the above-described embodiment, a change in the composition of the aerosol can be immediately detected and the operation of the aerosol generator can be controlled by reflecting the change in the composition of the aerosol, so that an efficient aerosol generating operation can be implemented.

[0299] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0300] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0301] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

[0302] The embodiments relate to an aerosol generating device capable of precisely detecting changes in the composition of an aerosol.

Claims

1. An aerosol generator for generating an aerosol; and An aerosol generating device, comprising a potential difference sensor for generating a signal by a potential difference that changes according to a change in the composition of the aerosol generated by the aerosol generator.

2. In paragraph 1, An aerosol generating device further comprising a passage through which at least a portion of the aerosol generated from the aerosol generator can flow, wherein the potential difference sensor generates the signal based on a change in the composition of the aerosol flowing through the passage.

3. In paragraph 2, An aerosol generating device, wherein at least a portion of the potential difference sensor is located in the passage.

4. In paragraph 1, An aerosol generating device wherein the above potential difference sensor generates the signal based on a change in pH of the aerosol.

5. In paragraph 2, The aerosol generator includes an aerosol generating chamber for generating an aerosol, and the passage is connected to the aerosol generating chamber, and the aerosol generated in the aerosol generating chamber flows through the passage. An aerosol generating device wherein the above potential difference sensor generates the signal based on a change in the composition of the aerosol flowing through the passage.

6. In paragraph 2, The aerosol generator includes a receiving portion for receiving an aerosol generating article for generating an aerosol, and a heater for heating the aerosol generating article. An aerosol generating device, wherein the passage is formed by a space between the aerosol generating article accommodated in the accommodation portion and the inner surface of the accommodation portion.

7. In paragraph 2, The aerosol generator includes a receiving portion for receiving an aerosol generating article for generating an aerosol, and a heater for heating the aerosol generating article. An aerosol generating device, wherein the passage penetrates the receiving portion.

8. In paragraph 1, The above aerosol generator, A cartridge for generating an aerosol from an aerosol generating material, A receiving portion for receiving an aerosol generating article and delivering an aerosol generated in the cartridge to the aerosol generating article, An aerosol generating device, wherein the above potential difference sensor is disposed in the receiving portion.

9. In paragraph 8, The aerosol generator further includes a heater for heating the aerosol generating article accommodated in the receiving portion to generate an aerosol, An aerosol generating device, wherein the potential difference sensor generates a signal by a potential difference that changes according to a change in at least one component of the aerosol generated from the aerosol generating article and the aerosol generated from the cartridge.

10. In paragraph 1, Further comprising a controller for controlling the operation of the aerosol generator, The above aerosol generator generates an aerosol from an aerosol generating material, An aerosol generating device, wherein the controller detects that the aerosol generating material is exhausted based on the signal of the potential difference sensor, and stops the operation of the aerosol generator when the aerosol generating material is exhausted.

11. In paragraph 1, Further comprising a controller for controlling the operation of the aerosol generator, An aerosol generating device, wherein the controller detects that the aerosol generator is operating abnormally based on the signal of the potential difference sensor, and stops the operation of the aerosol generator when the aerosol generator is operating abnormally.

12. In paragraph 1, The aerosol generator includes a heater for heating an aerosol generating material, Further comprising a controller for controlling the operation of the heater based on a predetermined temperature profile, An aerosol generating device, wherein the controller changes the temperature profile for controlling the operation of the heater based on the signal of the potential difference sensor.

13. In paragraph 1, An aerosol generating device in which the above potential difference sensor includes a signal generating unit made of a mesh material that allows an aerosol to pass through, and a droplet is generated when the aerosol passes through the signal generating unit, and the signal generating unit changes the potential difference according to a change in the composition of the droplet to generate the signal.

14. In paragraph 1, An aerosol generating device wherein the potentiometric sensor comes into contact with the aerosol to liquefy a portion of the aerosol, and the potentiometric sensor comes into contact with droplets generated from the aerosol to generate the signal.

15. In paragraph 1, An aerosol generating device in which the above potential difference sensor includes a reference electrode and a measuring electrode, and the signal is generated by changing the potential difference between the reference electrode and the measuring electrode according to a change in the component of the aerosol.

Images