Aerosol-generating device

Abstract

This aerosol-generating device comprises: an aerosol generator for generating an aerosol; a passage for air to be supplied to the aerosol generator or the aerosol generated by the aerosol generator to flow through; and a sensor, disposed in the passage to close at least a portion of the passage, for generating a signal by being at least partially deformed by the flow of the air or the aerosol in the passage.

Description

Aerosol generating device

[0001] The embodiments relate to an aerosol generating device, and more particularly to an aerosol generating device capable of directly, quickly and precisely detecting changes in the flow of air or aerosol flowing through a passage.

[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 the operation of the aerosol generating device, such as temperature or the user's puffing motion. However, such signal information, such as temperature or the user's puffing motion, does not directly detect the flow of 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 directly detecting the flow of aerosol is required.

[0006] Embodiments seek to provide an aerosol generating device that can operate based on signal information directly related to the flow of 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 will be apparent or understandable from the practice of the embodiments provided herein.

[0009] An aerosol generating device according to one embodiment of the present invention comprises: an aerosol generator for generating an aerosol; a passage for supplying air to the aerosol generator or for flowing aerosol generated from the aerosol generator; and a sensor disposed in the passage so as to close at least a portion of the passage, the sensor generating a signal by deforming at least a portion of the passage by a flow of air or aerosol in the passage.

[0010] The sensor may include a deformable member that can be deformed by a flow of air or aerosol flowing through the passage. The sensor may further include a resistive member that is disposed on the deformable member and has an electrical resistance that changes as it deforms together with the deformable member.

[0011] The deformable portion may be deformed by a flow of air or aerosol flowing through the passage, opening the passage. The deformable portion may be restored to close the passage.

[0012] The sensor may include a plurality of deformable elements that are deformed by a flow of air or aerosol flowing through the passage. The sensor may further include a resistive element disposed on at least one of the deformable elements. The resistive element may have an electrical resistance that changes as it deforms together with at least one of the deformable elements.

[0013] The sensor may include a terminal positioned on the wall of the passage. The sensor may further include a deformable member. The deformable member may be deformed by a flow of air or aerosol flowing through the passage. The deformable member may be electrically connected to the terminal or electrically isolated from the terminal.

[0014] The sensor may include a mesh portion. The mesh portion may be positioned in a passage. The mesh portion may include a plurality of holes through which air or aerosol may pass. The mesh portion may be deformed by the flow of air or aerosol.

[0015] The sensor may further include a resistive portion. The resistive portion may be arranged in the mesh portion. The resistive portion and the mesh portion may be deformable together, so that the resistive portion may have a variable electrical resistance.

[0016] The sensor may include a mesh portion of an electrically conductive material. The mesh portion may be positioned in a passage. The sensor may further include a deformable portion. The deformable portion may be deformed by a flow of air or aerosol. The deformable portion may be electrically connected to or electrically isolated from the mesh portion.

[0017] An electrical signal can be generated by electrically connecting the deformable portion to the mesh portion.

[0018] The sensor may further include a detection unit for detecting the electrical resistance of the deformable portion. The electrical resistance of the deformable portion detected by the detection unit may change by electrically connecting the deformable portion to the mesh portion.

[0019] The sensor may include a deformable portion positioned in one area of ​​the passage. The deformable portion may be deformed by a flow of air or aerosol. The sensor may further include a terminal positioned in another area of ​​the passage. The sensor may further include a connection terminal positioned in the deformable portion. The connection terminal may be electrically connected to or electrically disconnected from the terminal by deformation of the deformable portion.

[0020] The sensor may include a moving part positioned in the passage. The moving part may be movable in the passage by the flow of air or aerosol in the passage. The sensor may include a signal generating part. The signal generating part may be connected to the moving part. The signal generating part may generate a signal by being deformed by the movement of the moving part.

[0021] The aerosol generator may include a generation chamber in which an aerosol is generated. The aerosol generating device may further include a mouthpiece for discharging the aerosol to the outside. One end of the passage may be connected to the generation chamber. The other end of the passage may be connected to the mouthpiece.

[0022] At least a portion of the sensor may be deformed by the flow of air or aerosol to open the passage. When the flow of air or aerosol in the passage is stopped, at least a portion of the sensor may close the passage to prevent droplets from entering the generation chamber.

[0023] The aerosol generator may include a generation chamber in which an aerosol is generated. One end of a passage may be connected to the generation chamber, and the other end of the passage may be connected to the outside, such that outside air is delivered to the generation chamber through the passage.

[0024] The aerosol generator may include a heater for heating the aerosol generating material. The aerosol generating device may further include a controller for controlling the operation of the heater. The controller may detect the occurrence of an inhalation action based on a signal from a sensor. If an inhalation action occurs, the controller may initiate operation of the heater.

[0025] The aerosol generator may include a heater for heating an aerosol-generating material. The aerosol generator may further include a controller for controlling the operation of the heater based on a predetermined temperature profile. The controller may change the temperature profile for controlling the operation of the heater based on a signal from a sensor.

[0026] According to the aerosol generating device according to the embodiments, the flow of air generated inside the passage by the user's inhalation motion or the flow of aerosol generated by the aerosol generator can be detected by a sensor, and the operation of the aerosol generator can be efficiently controlled based on the signal of the sensor.

[0027] According to the aerosol generating device according to the embodiments, a signal is generated by deforming at least a portion of the sensor according to a change in the flow of air or aerosol flowing through the passage, so that a change in the flow of air or aerosol can be directly and quickly and precisely detected.

[0028] In addition, when the flow of air or aerosol stops, at least a portion of the passage through which the air or aerosol flows is closed, thereby preventing the flow of air or aerosol from flowing backward and blocking droplets generated from the aerosol or external foreign substances from entering the interior of the aerosol generating device.

[0029] In the aerosol generating device according to the embodiments, the intensity of the air or aerosol flow rate can be precisely measured by a sensor. Accordingly, the aerosol generating device can control the aerosol generating operation by taking into account the characteristics of the user's inhalation action by reflecting the intensity of the air or aerosol flow rate.

[0030] According to the aerosol generating device according to the embodiments, the operation of the aerosol generator can be controlled by reflecting the characteristics of the user's inhalation motion, so that an efficient aerosol generating operation can be implemented.

[0031] 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.

[0032] 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.

[0033] FIG. 1 is a block diagram of an aerosol generating device according to one embodiment.

[0034] Figure 2a illustrates an aerosol generating device according to another embodiment.

[0035] Figure 2b illustrates an aerosol generating device according to another embodiment.

[0036] Figure 3 illustrates an aerosol generating device according to another embodiment.

[0037] Figure 4 illustrates an aerosol generating device according to another embodiment.

[0038] Figure 5 is a longitudinal cross-sectional view of an aerosol generating device according to another embodiment.

[0039] FIG. 6 is a perspective view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0040] FIG. 7 is a cross-sectional view of a portion of an aerosol generating device according to the embodiment illustrated in FIG. 6.

[0041] FIG. 8 is a conceptual diagram schematically illustrating the configuration of some elements of the aerosol generating device according to the embodiment illustrated in FIG. 6.

[0042] FIG. 9 is a perspective view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0043] FIG. 10 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0044] FIG. 11 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0045] FIG. 12 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0046] Fig. 13 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0047] FIG. 14 is a perspective view schematically illustrating some elements of an aerosol generating device according to the embodiment illustrated in FIG. 13.

[0048] FIG. 15 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0049] Fig. 16 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0050] Fig. 17 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0051] Fig. 18 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0052] FIG. 19 is a flowchart showing an example of the operation of an aerosol generating device according to various embodiments.

[0053] FIG. 20 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] Referring to FIG. 2b, the heater (183) may be an external heating type heater.

[0142] The heater (183) is another example of an aerosol generator for generating an aerosol from an aerosol generating article (2).

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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).

[0147] An aerosol generating device (1) may be provided with a passage (30) through which air flows. For example, the housing (10) may include a structure (e.g., a hole) through which air can 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.

[0148] Air can flow to be supplied to the aerosol generator of the aerosol generating device (1) through the passage (30). The passage (30) is arranged adjacent to the end of the aerosol generating article (2) accommodated in the receiving portion.

[0149] A sensor (130) (e.g., sensor section 13 of FIG. 1) is placed in the passage (30) to close at least a portion of the passage (30). The sensor (130) generates a signal by deforming at least a portion of the sensor (130) due to the flow of air in the passage (30).

[0150] When a user performs an inhalation action of holding an aerosol generating article (2) in his / her mouth and inhaling the aerosol, air from outside the aerosol generating device (1) flows into the interior of the aerosol generating device (1) through the passage (30). At least a portion of the sensor (130) may be deformed by the flow of air flowing through the passage (30).

[0151] The sensor (130) generates a signal by changing according to changes in the flow of air supplied to the aerosol generator, so that changes in the flow of air supplied to the aerosol generator can be directly and quickly detected.

[0152] When the aerosol inhalation action is terminated, the air flow through the passage (30) stops. When the air flow through the passage (30) stops, at least a portion of the sensor (130) that was deformed by the air flow returns to its original shape. At least a portion of the sensor (130) that returns to its original shape can close at least a portion of the passage (30) again.

[0153] According to the aerosol generating device (1) according to the above-described embodiments, changes in the flow of air supplied to the aerosol generator can be directly and quickly detected. In addition, when the flow of air supplied to the aerosol generator stops, at least a portion of the airflow passage (30) is closed, so that external foreign substances can be prevented from entering the interior of the aerosol generating device (1).

[0154] 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.

[0155] 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).

[0156] 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.

[0157] 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.

[0158] 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).

[0159] The housing (10) and / or the cartridge (19) may be provided with airflow channels through which air flows.

[0160] 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).

[0161] 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).

[0162] 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.

[0163] 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.

[0164] 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).

[0165] 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).

[0166] The heater (24) and the liquid delivery means (25) of the cartridge (19) are other examples of an aerosol generator. The aerosol generator may include a generation chamber (C1) for generating an aerosol. At least one of the heater (24) and the liquid delivery means (25) may be located in the generation chamber (C1).

[0167] 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 a generating chamber (C1), and the other end of the passage (30) is open to the outside. Aerosol generated in the aerosol generator can flow through the passage (30) and then be discharged to the outside.

[0168] An aerosol generating device (1) includes a sensor (130) that generates a signal by at least a portion of an aerosol generated by a heater (183) as an aerosol generator being deformed. The sensor (130) is positioned in a passage (30) so as to close at least a portion of the passage (30).

[0169] When the aerosol generated from the aerosol generator flows through the passage (30), at least a portion of the sensor (130) may be deformed by the flow of the aerosol flowing through the passage (30).

[0170] The sensor (130) generates a signal by changing according to changes in the flow of aerosol generated by the aerosol generator, so that changes in the flow of aerosol generated by the aerosol generator can be directly and quickly detected.

[0171] When the aerosol inhalation operation is terminated, the flow of aerosol flowing through the passage (30) may be stopped. When the flow of aerosol in the passage (30) is stopped, at least a portion of the sensor (130) that has been deformed due to the flow of aerosol is restored to its original shape. At least a portion of the sensor (130) that is restored to its original shape may again close at least a portion of the passage (30).

[0172] According to the aerosol generating device (1) according to the above-described embodiments, changes in the flow of aerosol generated from the aerosol generator can be directly and quickly detected. In addition, when the flow of aerosol generated from the aerosol generator stops, at least a portion of the passage (30) through which the aerosol flows is closed, so that the flow of aerosol can be prevented from flowing backward, and external foreign substances can be prevented from entering the interior of the aerosol generating device (1) and droplets generated from the aerosol can be prevented from entering the generation chamber (C1).

[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. An aerosol generated by the cartridge heater (24) may flow along a passage (30). The aerosol generating device (1) includes a sensor (130) for generating a signal when at least a portion of the aerosol generated by the cartridge heater (24) is deformed by the flow. The sensor (130) is positioned in the passage (30) so as to close at least a portion of the passage (30).

[0194] When the aerosol generated from the aerosol generator flows through the passage (30), at least a portion of the sensor (130) may be deformed by the flow of the aerosol flowing through the passage (30).

[0195] The sensor (130) generates a signal by changing according to changes in the flow of aerosol generated by the aerosol generator, so that changes in the flow of aerosol generated by the aerosol generator can be directly and quickly detected.

[0196] When the aerosol inhalation operation is terminated, the flow of aerosol flowing through the passage (30) may be stopped. When the flow of aerosol in the passage (30) is stopped, at least a portion of the sensor (130) that has been deformed due to the flow of aerosol is restored to its original shape. At least a portion of the sensor (130) that is restored to its original shape may again close at least a portion of the passage (30).

[0197] According to the aerosol generating device (1) according to the above-described embodiments, changes in the flow of aerosol generated from the aerosol generator can be directly and quickly detected. In addition, when the flow of aerosol generated from the aerosol generator stops, at least a portion of the passage (30) through which the aerosol flows is closed, so that the flow of aerosol can be prevented from flowing backward, and droplets and / or foreign substances can be blocked from entering the generating chamber (C1) of the aerosol generating device (1).

[0198] Fig. 5 is a longitudinal cross-sectional view of an aerosol generating device (1) according to another embodiment.

[0199] An aerosol generating device (1) according to an embodiment illustrated in FIG. 5 includes an aerosol generator for generating an aerosol, a supply passage (32) for supplying air to the aerosol generator, a supply passage sensor (230) (e.g., sensor unit 13 of FIG. 1) disposed in the supply passage (32) and deformed by the flow of air to generate a signal, an exhaust passage (31) through which aerosol generated in the aerosol generator flows, and a sensor (130) disposed in the exhaust passage (31) and deformed by the flow of aerosol to generate a signal.

[0200] The aerosol generator includes a generation chamber (C1) in which an aerosol is generated, a liquid delivery means (25) located inside the generation chamber (C1), and a heater (24) that heats the liquid delivery means (25) to generate an aerosol.

[0201] Air flowing into the interior of the aerosol generator (1) from the outside of the housing (10) flows through the supply passage (32) and then flows into the generation chamber (C1). The aerosol generated in the generation chamber (C1) flows through the discharge passage (31) of the aerosol generator and can be discharged to the outside. The user can inhale the aerosol by putting the mouthpiece (10 m) provided at one end of the aerosol generator in his / her mouth.

[0202] A supply passage sensor (230) is positioned in the supply passage (32) to close at least a portion of the supply passage (32). The supply passage sensor (230) generates a signal by deforming at least a portion of the supply passage sensor (230) due to the flow of air in the supply passage (32).

[0203] When a user performs an inhalation motion by placing the mouthpiece (10 m) in his / her mouth and inhaling the aerosol, air from outside the aerosol generating device (1) is introduced into the interior of the aerosol generating device (1) through the supply passage (32). At least a portion of the supply passage sensor (230) may be deformed by the flow of air flowing through the supply passage (32).

[0204] The supply passage sensor (230) generates a signal by changing according to changes in the flow of air supplied to the aerosol generator, so that changes in the flow of air supplied to the aerosol generator can be directly and quickly detected.

[0205] When the aerosol inhalation operation is terminated, the flow of air flowing through the supply passage (32) may be stopped. When the flow of air in the supply passage (32) is stopped, at least a portion of the supply passage sensor (230) that has been deformed by the air flow is restored to its original shape. At least a portion of the supply passage sensor (230) that is restored to its original shape may again close at least a portion of the supply passage (32).

[0206] One end of the discharge passage (31) is connected to the generation chamber (C1), and the other end of the discharge passage (31) is connected to the mouthpiece (10 m). The sensor (130) is arranged to close at least a portion of the discharge passage (31). The sensor (130) can generate a signal by deforming at least a portion of the sensor (130) due to the flow of aerosol generated in the generation chamber (C1) of the aerosol generator.

[0207] When the aerosol generated from the aerosol generator flows through the discharge passage (31), at least a portion of the sensor (130) may be deformed by the flow of the aerosol flowing through the discharge passage (31). In addition, at least a portion of the sensor (130) may be deformed by the flow of the aerosol flowing through the discharge passage (31), thereby completely opening the generation chamber (C1).

[0208] The sensor (130) generates a signal by changing according to changes in the flow of aerosol generated by the aerosol generator, so that changes in the flow of aerosol generated by the aerosol generator can be directly and quickly detected.

[0209] When the aerosol inhalation operation is terminated, the flow of aerosol flowing through the discharge passage (31) stops. When the flow of aerosol in the discharge passage (31) stops, at least a portion of the sensor (130) that was deformed according to the flow of aerosol is restored to its original shape. At least a portion of the sensor (130) that is restored to its original shape can close at least a portion of the discharge passage (31) again.

[0210] According to the aerosol generating device (1) according to the above-described embodiments, a change in the flow of air supplied to the aerosol generator and / or a change in the flow of aerosol generated from the aerosol generator can be directly and quickly detected. In addition, when the flow of air supplied to the aerosol generator and / or the flow of aerosol generated from the aerosol generator is stopped, at least a part of the supply passage (32) through which air flows and / or the discharge passage (31) through which aerosol flows is closed, so that external foreign substances can be prevented from entering the interior of the aerosol generating device (1) and droplets generated from the aerosol can be prevented from entering the generation chamber (C1).

[0211] The embodiments are not limited by the structure of the aerosol generating device (1) in which the supply passage sensor (230) is arranged in the supply passage (32) and the sensor (130) is arranged in the discharge passage (31) as illustrated in FIG. 5. For example, the sensor may be arranged in only one of the supply passage (32) and the discharge passage (31).

[0212] FIG. 6 is a perspective view schematically illustrating a part of an aerosol generating device (1) according to another embodiment, FIG. 7 is a cross-sectional view of a part of an aerosol generating device (1) according to the embodiment illustrated in FIG. 6, and FIG. 8 is a conceptual diagram schematically illustrating the configuration of some elements of the aerosol generating device (1) according to the embodiment illustrated in FIG. 6.

[0213] The aerosol generating device (1) according to the embodiment illustrated in FIGS. 6 to 7 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0214] The sensor (130) may include a deformable portion (131) that is deformed by the flow of air or aerosol flowing through the passage (30), and a resistance portion (132) that is disposed on the deformable portion (131) and has an electrical resistance that changes by being deformed together with the deformable portion (131).

[0215] A sensor (130) having such a structure can be implemented by a strain gauge. The strain gauge can be a sensor for generating an electrical signal based on physical deformation when a deformation portion (131) and a resistance portion (132) are physically deformed by a flow of air or aerosol flowing through a passage (30).

[0216] The resistance portion (132) may include an electrically conductive material. For example, the resistance portion (132) may include an electrically conductive metal resistance element or semiconductor element.

[0217] The deformation member (131) can support the resistance member (132). The resistance member (132) is disposed on a substrate (132b), and the substrate (132b) is disposed on the deformation member (131). The substrate (132b) may include an insulating material that does not conduct electricity. The deformation member (131) may include a flexible material that can be bent by a flow of air or aerosol flowing through the passage (30).

[0218] A frame (130f) for supporting a sensor (130) is arranged in the passage (30). The frame (130f) includes a through hole (130a) corresponding to the shape of the outer edge of the deformation portion (131). One end of the deformation portion (131) is fixed to the through hole (130a), and the other end of the deformation portion (131) can be separated from the through hole (130a).

[0219] In FIGS. 6 and 7, a state in which the deformation portion (131) is deformed by the flow of air or aerosol flowing through the passage (130a) is depicted by a solid line. When the deformation portion (131) is deformed by the flow of air or aerosol, the other end of the deformation portion (131) moves to a position spaced apart from the passage (130a), thereby opening the passage (130a). As the passage (130a) is opened, the flow of air or aerosol flowing through the passage (30) can be maintained smoothly.

[0220] When the flow of air or aerosol flowing through the passage (30) stops, the deformation portion (131) can be restored to its original shape. The deformation portion (131) restored to its original shape moves to a position where it closes the hole (130a). When the deformation portion (131) closes the hole (130a), the passage (30) is closed, thereby preventing the reverse flow of air or aerosol, and preventing droplets generated by condensation of external foreign substances or aerosol through the passage (30) from moving along the passage (30).

[0221] The end of the resistance portion (132) of the sensor (130) is extended to the outside of the passage (30). A connection wire (132t) may be formed at the end of the resistance portion (132).

[0222] The sensor (130) may include a detection unit (133) connected to a resistance unit (132) via a connection wire (132t) to detect a change in resistance of the resistance unit (132) and generate a detection signal. For example, the detection unit (133) may include a detection circuit such as a Wheatstone Bridge.

[0223] The sensor (130) may also include an amplifier (134) for amplifying the detection signal of the detection unit (133) and transmitting the amplified signal to the controller of the aerosol generating device.

[0224] According to the aerosol generating device as described above, a signal is generated by deforming at least a portion of the sensor (130) according to a change in the flow of air or aerosol flowing through the passage (30), so that a change in the flow of air or aerosol can be directly, quickly, and precisely detected.

[0225] The degree of curvature of the resistance portion (132) of the sensor (130) may vary depending on the intensity of the flow of air or aerosol, i.e., the intensity of the flow velocity. The 'degree of curvature' may refer to the angle at the center of the arc corresponding to the unit length of the arc of the curved resistance portion (132) or the radius of curvature of the curved resistance portion (132). Since the electrical resistance of the resistance portion (132) of the sensor (130) varies based on the intensity of the flow velocity, the sensor (130) may generate a detection signal depending on the intensity of the flow velocity.

[0226] According to the sensor (130) described above, the intensity of the flow rate of air or aerosol can be precisely measured. Accordingly, the aerosol generating device (1) can control the aerosol generating operation by considering the characteristics of the user's inhalation action by reflecting the intensity of the flow rate of air or aerosol. Based on the detection signal generated by the sensor (130), the aerosol generating device (1) can detect which range of low, medium, and high speed the flow rate of air or aerosol corresponds to.

[0227] For example, when the flow rate falls within the high-velocity range, the inhalation action can be considered to be performed with a high intensity. Since a high intensity inhalation action can result in the inhalation of a large amount of aerosol in a short period of time, the aerosol generator can be operated to generate a large amount of aerosol in a short period of time in response to a high intensity inhalation action.

[0228] For example, when the flow rate falls within the low-speed range, the inhalation action can be considered to be performed at a low intensity. A low-intensity inhalation action can result in a relatively long-term inhalation of aerosol. The aerosol generator can respond to this low-intensity inhalation action by reducing the amount of aerosol produced per unit time, thereby providing a suitable amount of aerosol for a user performing an inhalation action over a long period of time.

[0229] FIG. 9 is a perspective view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0230] The sensor (130) of the aerosol generating device according to the embodiment illustrated in FIG. 9 includes a plurality of deformable parts (131) that are deformed by the flow of air or aerosol flowing through the passage, and a resistance part (132) arranged in at least one of the deformable parts (131).

[0231] A frame (130f) is arranged in the passage of the aerosol generating device to support the sensor (130). The frame (130f) includes a hole (130a) through which air or aerosol can pass. One end of each of the deformable parts (131) is fixed to the hole (130a), and the other end of each of the deformable parts (131) can be separated from the hole (130a).

[0232] A substrate (132b) including a resistance portion (132) is placed on the deformation portions (131). A connection wire (132t) may be formed at the end of the resistance portion (132) of the sensor (130).

[0233] When the deformation parts (131) are deformed by the flow of air or aerosol, each other end of the deformation parts (131) moves to a position spaced apart from the opening (130a), thereby opening the opening (130a). As the opening (130a) is opened, the flow of air or aerosol flowing through the passage can be maintained smoothly.

[0234] The deformable portions (131) may include a flexible material that can be bent by the flow of air or aerosol flowing through the passage. As the deformable portions (131) are bent, the resistance portion (132) is bent together with the deformable portions (131), thereby changing the electrical resistance of the resistance portion (132).

[0235] The sensor (130) may further include a detection unit (e.g., detection unit 133 of FIG. 8) connected to the resistance unit (132) via a connection wire (132t) to generate a detection signal by detecting a change in the resistance of the resistance unit (132), and an amplifier unit (e.g., amplifier unit 134 of FIG. 8) to amplify the detection signal and transmit the amplified signal to the controller of the aerosol generating device.

[0236] The embodiments are not limited by the number and shape of the deformation parts (131) illustrated in FIG. 9. For example, the number of deformation parts (131) may be three or more. In addition, the shape of the deformation parts (131) may be variously deformed into a circle, an oval, a triangle, a polygon, etc. In addition, the frame (130f) includes a plurality of openings (130a), and each of the plurality of deformation parts (131) may be arranged in each of the plurality of openings (130a).

[0237] FIG. 10 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0238] The aerosol generating device (1) according to the embodiment illustrated in FIG. 10 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0239] The sensor (130) includes a terminal (130c, 130d) located on the wall of the passage (30) and a deformable portion (131) that can be deformed by a flow of air or aerosol flowing through the passage (30) to close or open at least a portion of the passage (30).

[0240] Terminals (130c, 130d) can be connected to a detection unit for generating a signal (e.g., detection unit 133 of FIG. 8) and / or an amplifier for amplifying a signal of the detection unit (e.g., amplifier unit 134 of FIG. 8).

[0241] The deformable portion (131) can be deformed by the flow of air or aerosol flowing through the passage (30) and electrically connected to or electrically separated from the terminal (130c, 130d).

[0242] The deformable portion (131) includes a wing (131a) that is deformably connected to the passage (30), and a connecting terminal (131b) made of an electrically conductive material connected to an end of the wing (131a). One end of the wing (131a) is fixed to the passage (30), and the other end of the wing (131a) extends toward the center of the passage (30). The wing (131a) can be deformed by the flow of air or aerosol in the passage (30).

[0243] When a flow of air or aerosol occurs in the passage (30), the wing (131a) of the deformation part (131) bends. When the wing (131a) is deformed into a shape indicated by a dotted line in Fig. 10 due to the flow of air or aerosol, the wing (131a) opens the passage (30). With the wing (131a) opening the passage (30), the connection terminal (131b) comes into contact with the terminals (130c, 130d) of the passage (30). The connection terminal (131b) electrically connects the terminals (130c, 130d) of the passage (30). When the terminals (130c, 130d) are electrically connected, a signal of the sensor (130) is generated.

[0244] According to the aerosol generating device of the above-described configuration, the deformable portion (131) is deformed by the flow of air or aerosol flowing through the passage (30), thereby generating a signal from the sensor (130), so that the flow of air or aerosol can be detected quickly and precisely.

[0245] In addition, when the flow of air or aerosol in the passage (30) is stopped, the deformation portion (131) can be restored to its original shape, thereby closing the passage (30). Accordingly, the reverse flow of air or aerosol can be prevented, and droplets or foreign substances generated by liquefaction of aerosol during the operation of the aerosol generating device can be effectively blocked from flowing into the interior of the aerosol generating device along the passage (30).

[0246] FIG. 11 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0247] The aerosol generating device according to the embodiment illustrated in FIG. 11 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0248] The sensor (130) includes terminals (130c, 130d) located on the wall of the passage (30), and a deformable portion (131) that is deformed by a flow of air or aerosol flowing through the passage (30) and is electrically connected to or electrically separated from the terminals (130c, 130d). The deformable portion (131) can close or open at least a portion of the passage (30) by being deformed by the flow of air or aerosol.

[0249] Terminals (130c, 130d) can be connected to a detection unit for generating a signal (e.g., detection unit 133 of FIG. 8) and / or an amplifier for amplifying a signal of the detection unit (e.g., amplifier unit 134 of FIG. 8).

[0250] The deformable portion (131) includes a wing (131a) that is deformably connected to the passage (30) and a connecting terminal (131b) made of an electrically conductive material arranged along one surface of the wing (131a). One end of the wing (131a) is fixed to the passage (30), and the other end of the wing (131a) extends toward the center of the passage (30). The wing (131a) can be deformed by the flow of air or aerosol in the passage (30).

[0251] One end of the connection terminal (131b) remains electrically connected to the first terminal (130d) among the terminals (130c, 130d) of the passage (30).

[0252] In Fig. 11, the initial state before the deformation part (131) is deformed is shown by a solid line. The deformation part (131) can close the passage (30) in the initial state. In addition, in the initial state of the deformation part (131), the other end of the connection terminal (131b) is electrically separated from the second terminal (130c) among the terminals (130c, 130d) of the passage (30).

[0253] When the deformation portion (131) is deformed by the flow of air or aerosol flowing through the passage (30), the deformation portion (131) moves to a deformation position shown by a dotted line in Fig. 11. The deformation portion (131) can open at least a part of the passage (30) at the deformation position. In addition, at the deformation position of the deformation portion (131), the other end of the connection terminal (131b) is electrically connected to the second terminal (130c) among the terminals (130c, 130d) of the passage (30).

[0254] Since the terminals (130c, 130d) of the passage (30) are electrically connected by the connection terminal (131b) at the deformation position of the deformation section (131), a signal of the sensor (130) is generated by the detection section (detection circuit) connected to the terminals (130c, 130d).

[0255] FIG. 12 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0256] The aerosol generating device according to the embodiment illustrated in FIG. 12 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0257] The sensor (130) includes a deformation part (131) located in one area of ​​the passage (30), terminals (130c, 130d) located in another area of ​​the passage (30), and a connection terminal (131b) disposed in the deformation part (131) and electrically connected to or electrically separated from the terminals (130c, 130d) by deformation of the deformation part (131).

[0258] The deformable portion (131) can be deformed by the flow of air or aerosol flowing through the passage (30). The deformable portion (131) can close or open at least a portion of the passage (30) by being deformed by the flow of air or aerosol.

[0259] Terminals (130c, 130d) can be connected to a detection circuit for generating a signal and / or an amplifier for amplifying a signal of the detection circuit.

[0260] One end of the deformation portion (131) is fixed to the passage (30), and one end of the deformation portion (131) is maintained in a state of being electrically connected to the second terminal (130c) among the terminals (130c, 130d) of the passage (30). The other end of the deformation portion (131) extends toward the center of the passage (30). The deformation portion (131) can be deformed by the flow of air or aerosol in the passage (30).

[0261] In Fig. 12, the initial state before the deformation part (131) is deformed is shown by a solid line. The deformation part (131) can close the passage (30) in the initial state. In addition, in the initial state of the deformation part (131), the connecting terminal (131b) at the other end of the deformation part (131) is electrically connected to the first terminal (130d) among the terminals (130c, 130d) of the passage (30). Since the deformation part (131) includes an electrically conductive material, the deformation part (131) electrically connects the terminals (130c, 130d) in the initial state of the deformation part (131).

[0262] When the deformation part (131) is deformed by the flow of air or aerosol flowing through the passage (30), the deformation part (131) moves to a deformation position shown by a dashed line in Fig. 12. The deformation part (131) can open at least a part of the passage (30) at the deformation position. In addition, in the deformation state of the deformation part (131), the connection terminal (131b) at the other end of the deformation part (131) is electrically separated from the first terminal (130d) among the terminals (130c, 130d) of the passage (30).

[0263] Since the terminals (130c, 130d) of the passage (30) are electrically separated by the connection terminal (131b) in the deformed state of the deformed portion (131), a signal of the sensor (130) is generated by the detection circuit connected to the terminals (130c, 130d).

[0264] FIG. 13 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment, and FIG. 14 is a perspective view schematically illustrating some elements of the aerosol generating device according to the embodiment illustrated in FIG. 13.

[0265] The aerosol generating device according to the embodiment illustrated in FIGS. 13 and 14 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0266] The sensor (130) includes a mesh portion (135) arranged in the passage (30) and a resistance portion (132) arranged in the mesh portion (135).

[0267] The resistance portion (132) may include an electrically conductive material. The resistance portion (132) has an electrical resistance that changes as it is deformed together with the mesh portion (135). For example, the resistance portion (132) may include an electrically conductive metal resistance element or semiconductor element. An end of the resistance portion (132) may be extended to the outside of the passage (30), and a connection wire (132t) may be formed at the end of the resistance portion (132).

[0268] A frame (130f) for supporting a sensor (130) is arranged in the passage (30). The frame (130f) is fixed to one area of ​​the passage (30) and supports a mesh portion (135). The mesh portion (135) may include a porous membrane material that allows air and / or aerosol to pass through. The mesh portion (135) may include a plurality of microscopic holes (135a) through which air and / or aerosol can pass. Since the mesh portion (135) includes a plurality of holes (135a), the mesh portion (135) does not completely close the entire area of ​​the passage (30) but only closes a portion of the entire area of ​​the passage (30).

[0269] The mesh portion (135) can be deformed by the flow of air or aerosol flowing through the passage (30). The mesh portion (135) can be made of a material that is flexible so as to be deformed by the flow of air or aerosol. When air or aerosol flows in the Z-axis direction in the passage (30), the air or aerosol passes through the plurality of holes (135a) of the mesh portion (135). As the air or aerosol passes through the mesh portion (135), fluid pressure acts on the mesh portion (135), so that the mesh portion (135) can be deformed into a deformed state shown by a dotted line. When the mesh portion (135) is deformed, the resistance portion (132) is also deformed together with the mesh portion (135).

[0270] When the flow of air or aerosol flowing through the passage (30) stops, the mesh portion (135) can be restored to its original shape.

[0271] The mesh portion (135) may be implemented by a functional porous membrane material that allows gases to pass through but does not allow liquids to pass through. For example, the mesh portion (135) may allow air and / or aerosol flowing in the Z-axis direction to pass through, and may perform a function of blocking droplets generated from the upper portion of the mesh portion (135) from flowing in the -Z-axis direction. In order to block droplets generated from the upper portion of the mesh portion (135) from flowing in the -Z-axis direction, the surface of the mesh portion (135) may be treated with a water-repellent coating. The mesh portion (135) may include, for example, any one or a combination of materials such as expanded polytetrafluoroethylene (ePTFE), a fluororesin, and a nano-coating film.

[0272] FIG. 15 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0273] The aerosol generating device according to the embodiment illustrated in FIG. 15 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0274] The sensor (130) includes a mesh portion (135) of electrically conductive material arranged in a passage (30), and a deformable portion (131) that is deformed by the flow of air or aerosol flowing through the passage (30) and is electrically connected to or electrically separated from the mesh portion (135).

[0275] The deformation member (131) is electrically connected to a terminal (130c) located on the wall of the passage (30) and includes an electrically conductive material. For example, the deformation member (131) may include an electrically conductive metal resistance element or semiconductor element.

[0276] The sensor (130) may include a detection unit (133) connected to the deformation unit (131) to detect a change in resistance of the deformation unit (131) and generate a detection signal. The sensor (130) may also include an amplifier unit (134) to amplify the detection signal of the detection unit (133) and transmit the amplified signal to a controller of the aerosol generating device.

[0277] In Fig. 15, a state in which the deformation portion (131) is deformed by the flow of air or aerosol flowing through the opening (130a) is illustrated by a dotted line. When the deformation portion (131) is deformed by the flow of air or aerosol, at least a portion of the deformation portion (131) may come into contact with the mesh portion (135), so that the deformation portion (131) and the mesh portion (135) may be electrically connected.

[0278] When the deformation part (131) is deformed and the deformation part (131) and the mesh part (135) are electrically connected, the detection part (133) detects the electrical resistance of the entire electrically connected deformation part (131) and the mesh part (135), and a signal of the sensor (130) indicating the changed electrical resistance can be generated.

[0279] When the flow of air or aerosol flowing through the passage (30) stops, the deformed portion (131) can be restored to its original shape as shown by the solid line in Fig. 15.

[0280] When the deformation part (131) is restored to its original shape and the deformation part (131) and the mesh part (135) are electrically separated, the detection part (133) detects the electrical resistance of the deformation part (131), and a signal of the sensor (130) representing the electrical resistance of the original deformation part (131) can be generated.

[0281] The mesh portion (135) may include an electrically conductive porous membrane material that allows air and / or aerosol to pass through. Therefore, the mesh portion (135) may allow air and / or aerosol to pass through, and at the same time, when the mesh portion (135) comes into contact with the deformation portion (131), the mesh portion (135) and the deformation portion (131) may be electrically connected.

[0282] In order to block the liquid droplets generated at the upper portion of the mesh portion (135) from flowing in the -Z-axis direction, the surface of the mesh portion (135) may be treated with a water-repellent coating.

[0283] Fig. 16 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0284] The aerosol generating device according to the embodiment illustrated in FIG. 16 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0285] The sensor (130) includes a mesh portion (135) of electrically conductive material arranged in a passage (30), and a deformable portion (131) that is deformed by the flow of air or aerosol flowing through the passage (30) and is electrically connected to or electrically separated from the mesh portion (135).

[0286] The deformation member (131) may include an electrically conductive material. For example, the deformation member (131) may include an electrically conductive metal resistance element or semiconductor element.

[0287] The mesh portion (135) is fixed to one area of ​​the passage (30) by the frame (130f). Since the mesh portion (135) includes a plurality of holes, the mesh portion (135) does not completely close the entire area of ​​the passage (30) but only closes a portion of the entire area of ​​the passage (30).

[0288] The mesh portion (135) may include an electrically conductive porous membrane material that allows air and / or aerosol to pass through. Therefore, the mesh portion (135) may allow air and / or aerosol to pass through, and at the same time, when the mesh portion (135) comes into contact with the deformation portion (131), the mesh portion (135) and the deformation portion (131) may be electrically connected.

[0289] The sensor (130) may include terminals (130c, 130d) positioned on the wall of the passage (30). The deformation portion (131) is electrically connected to the first terminal (130d) among the terminals (130c, 130d). The mesh portion (135) is electrically connected to the second terminal (130c) among the terminals (130c, 130d).

[0290] In Fig. 16, the initial state of the deformation portion (131) before deformation is depicted by a solid line. In the initial state of the deformation portion (131), the deformation portion (131) and the mesh portion (135) are electrically separated.

[0291] When the deformation part (131) is deformed by the flow of air or aerosol flowing through the passage (30), the deformation part (131) moves to the deformation position shown by the dotted line in Fig. 16. The deformation part (131) is electrically connected to the mesh part (135) at the deformation position.

[0292] When the deformation portion (131) and the mesh portion (135) are electrically connected at the deformation position of the deformation portion (131), the terminals (130c, 130d) are electrically connected, so that a signal of the sensor (130) is generated by the detection circuit (detection portion) connected to the terminals (130c, 130d).

[0293] Fig. 17 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0294] The aerosol generating device according to the embodiment illustrated in FIG. 17 includes a sensor (130) disposed in a passage (30) to close at least a portion of the passage (30) through which air supplied to the aerosol generator or aerosol generated from the aerosol generator flows.

[0295] The sensor (130) includes electrodes (130e, 130g) positioned in the passage (30) and a deformable portion (131) that can be deformed by a flow of air or aerosol flowing through the passage (30) to close or open at least a portion of the passage (30).

[0296] The sensor (130) may include terminals (130c, 130d) positioned on the wall of the passage (30). Each end of the electrodes (130e, 130g) is electrically connected to the terminals (130c, 130d), and each other end of the electrodes (130e, 130g) protrudes toward the center of the passage (30). The terminals (130c, 130d) may be connected to a detection circuit for generating a signal and / or an amplifier for amplifying a signal of the detection circuit.

[0297] The deformable portion (131) may include a flexible material. The deformable portion (131) may be deformed by a flow of air or aerosol flowing through the passage (30) and may come into contact with or be separated from the electrodes (130e, 130g). Since at least a portion of the deformable portion (131) includes an electrically conductive material, the deformable portion (131) and the electrodes (130e, 130g) may be electrically connected by coming into contact with each other.

[0298] When a flow of air or aerosol occurs in the passage (30), the deformation portion (131) bends. When the deformation portion (131) is deformed into a shape indicated by a dotted line in FIG. 17 by the flow of air or aerosol, the passage (30) is opened. In addition, as the deformation portion (131) is deformed, the deformation portion (131) may be electrically separated from the electrodes (130e, 130g). As the deformation portion (131) is electrically separated from the electrodes (130e, 130g), a signal from the sensor (130) is generated by the detection circuit connected to the terminals (130c, 130d) to indicate that the passage (30) is opened. For example, the signal from the sensor (130) may be a signal indicating that a part of the electrical circuit is opened and the flow of current is blocked.

[0299] When the flow of air or aerosol in the passage (30) is stopped, the deformation portion (131) can be restored to its original shape, thereby closing the passage (30). Accordingly, the flow of air or aerosol can be prevented from flowing backward, and the liquid droplets or foreign substances generated by liquefying the aerosol generated during the operation of the aerosol generating device can be effectively blocked from flowing into the interior of the aerosol generating device along the passage (30).

[0300] When the deformation part (131) is restored to its original shape, a signal from the sensor (130) is generated by the detection circuit connected to the terminals (130c, 130d) to indicate that the passage (30) is closed as the deformation part (131) is electrically connected to the electrodes (130e, 130g). For example, the signal from the sensor (130) may be a signal indicating that an electric circuit is connected and a flow of current has occurred.

[0301] Fig. 18 is a cross-sectional view schematically illustrating a portion of an aerosol generating device according to another embodiment.

[0302] The sensor (130) of the aerosol generating device according to the embodiment illustrated in Fig. 18 includes a moving part (136) movably arranged in a passage (30), and a signal generating part (137) connected to the moving part (136) and capable of generating a signal by being deformed by the movement of the moving part (136).

[0303] The passage (30) includes a narrowing portion (30s) in which the inner diameter of a portion of the passage (30) is narrowed. The moving portion (136) is arranged inside the passage (30) so as to be movable along the extension direction of the passage (30). In Fig. 18, the position of the moving portion (136) in contact with the narrowing portion (30s) of the passage (30) is shown by a dotted line. The position where the moving portion (136) is in contact with the narrowing portion (30s) corresponds to a state where no air or aerosol flow occurs in the passage (30). Therefore, the position where the moving portion (136) is in contact with the narrowing portion (30s) corresponds to the initial position of the moving portion (136).

[0304] The moving part (136) includes a leg part (136b) that protrudes outward from the edge. The leg part (136b) is connected to a guide part (30g) formed on the inner wall surface of the passage (30). The guide part (30g) may include a groove formed concavely on the inner wall surface of the passage (30). The guide part (30g) is formed to extend along the extension direction of the passage (30) in a portion of the passage (30).

[0305] An elastic pressure member (136s) is arranged between one end of the guide member (30g) and the leg member (136b). The elastic pressure member (136s) presses the leg member (136b) toward the -Z-axis direction. Since the moving member (136) is pressed toward the -Z-axis direction by the elastic pressure member (136s), the moving member (136) is always pressed toward the initial position where it contacts the reducing member (30s).

[0306] The elastic pressure member (136s) can be implemented by, for example, a spring, rubber, and a gas cylinder.

[0307] A signal generating unit (137) is arranged between the other end of the guide unit (30g) and the leg unit (136b). The signal generating unit (137) may include, for example, a strain gauge. The signal generating unit (137) may include a substrate that is deformed as the leg unit (136b) moves along the extension direction of the passage, and a resistance unit arranged on the substrate. The signal generating unit (137) may extend or contract in the Z-axis direction, for example, along the movement direction of the moving unit (136). As the substrate of the signal generating unit (137) is deformed, the resistance unit is deformed together with the substrate, thereby changing the electrical resistance of the resistance unit. A detection unit (e.g., detection unit 133 of FIG. 8) and / or an amplifier (e.g., amplifier of FIG. 8) for detecting the changing electrical resistance of the resistance unit may be connected to the signal generating unit (137).

[0308] In Fig. 18, a state in which the moving part (136) moves due to the flow of air or aerosol flowing through the passage (30) is depicted by a solid line. When the moving part (136) moves due to the flow of air or aerosol, the moving part (136) is separated from the reducing part (30s), thereby opening the passage (130a). As the passage (130a) is opened, the flow of air or aerosol flowing through the passage (30) can be maintained smoothly.

[0309] The moving part (136) can move in the Z-axis direction by the flow of air or aerosol flowing through the passage (30). When the moving part (136) moves to a position where it is separated from the reducing part (30s) while resisting the pressing force of the elastic pressing part (136s), the signal generating part (137) is deformed and a signal of the sensor (130) is generated.

[0310] As the intensity of the air or aerosol flow flowing through the passage (30) increases, the distance that the moving part (136) moves increases, which may increase the separation distance between the moving part (136) and the reducing part (30s). Accordingly, as the intensity of the air or aerosol flow increases, the open area of ​​the passage (30) may increase. As the moving distance of the moving part (136) increases, the deformable length of the signal generating part (137) also increases. Therefore, the sensor (130) can quickly detect the open area of ​​the passage (30) and the intensity of the air or aerosol flow based on the size of the signal generated by the signal generating part (137).

[0311] FIG. 19 is a flowchart illustrating an example of the operation of an aerosol generating device according to various embodiments.

[0312] The operation of the aerosol generating device illustrated in FIG. 19 may be for example to implement a smart-on function that automatically starts operation of the aerosol generating device upon detecting that a user has attempted an inhalation motion to inhale air and / or aerosol from the aerosol generating device.

[0313] An example of the operation of an aerosol generating device includes an inhalation motion detection step (S100) that detects that a user's inhalation motion has occurred. In the inhalation motion detection step (S100), a sensor that is at least partially deformed by a flow of air or aerosol can generate a signal.

[0314] After the suction motion detection step (S100), a step (S110) for determining whether a suction motion has occurred may be executed. The step (S110) for determining whether a suction motion has occurred may be a step in which the controller determines whether a suction motion has occurred based on a signal generated by a sensor. For example, if the size of the sensor signal is greater than a predetermined reference value, it may be determined that the user is performing a suction motion through the passage. As another example, the signal of the sensor for determining the occurrence of a suction motion may be an on / off signal. That is, before the user performs the suction motion, the signal of the sensor may correspond to an off signal, and if the user performs the suction motion, it may correspond to an on signal of the sensor.

[0315] After it is determined that an inhalation action has occurred in the step (S110) of determining whether an inhalation action has occurred, an aerosol generation step (S120) of initiating the operation of the aerosol generator can be executed.

[0316] If it is determined that an inhalation action has occurred, the controller of the aerosol generating device may initiate operation of the aerosol generator. The operation of the aerosol generator may be, for example, the operation of generating an aerosol from an aerosol generating material or aerosol generating article by applying electricity to a heater of the aerosol generator.

[0317] As another example, the operation of the aerosol generator may be a preheating operation that preheats the heater of the aerosol generator by applying electricity to it before generating the aerosol. The preheating operation is an operation that prepares an environment capable of generating aerosol before the aerosol generating device performs the operation of generating the aerosol. Therefore, if a user performs a single operation of inhaling air from the aerosol generating device before inhaling the aerosol, the aerosol generating device can perform a preheating operation that preliminarily heats the heater of the aerosol generator.

[0318] According to the operation of the aerosol generating device according to the above-described embodiment, the flow of air or aerosol generated inside the passage by the user's inhalation motion is detected by a sensor, and the operation of the aerosol generator can be efficiently controlled based on the signal of the sensor.

[0319] FIG. 20 is a flowchart illustrating another example of the operation of an aerosol generating device according to various embodiments.

[0320] The operation of the aerosol generating device illustrated in Fig. 20 may be to control the aerosol generating operation taking into account the characteristics of the user's inhalation operation.

[0321] The operation of the aerosol generating device illustrated in FIG. 20 includes an inhalation motion detection step (S300) that detects a user's inhalation motion. In the inhalation motion detection step (S300), a sensor that is at least partially deformed by a flow of air or aerosol can generate a signal.

[0322] In the suction motion detection step (S300), for example, one or a combination of the length of time the user continues the suction motion, the strength of the suction motion, and the number of suction motions can be detected.

[0323] For example, to detect the intensity of an inhalation motion, the degree to which a sensor is deformed may vary depending on the intensity of the air or aerosol flow, i.e., the intensity of the flow rate, thereby changing the magnitude of the sensor signal. For example, the electrical resistance of the deformed sensor may vary based on the intensity of the flow rate, allowing the sensor to generate a detection signal corresponding to the intensity of the flow rate.

[0324] As another example, the duration for which the sensor signal is maintained and the number of times the sensor signal is generated can be detected by modifying the sensor to detect the duration of the suction action and the number of times the sensor signal is generated.

[0325] Based on the characteristics of the user's inhalation motion detected in the inhalation motion detection step (S300), a temperature profile changing step (S310) is executed. In the temperature profile changing step (S310), a temperature profile related to various parameters for controlling the aerosol generator can be adjusted based on the results detected in the inhalation motion detection step (S300).

[0326] In the step of changing the temperature profile (S310), a temperature profile suitable for the characteristics of the user's suction action can be selected based on the results detected by the sensor, for example.

[0327] For example, if the flow rate generated by the inhalation action falls within the high-velocity range, the inhalation action can be considered to be performed with a high intensity. Since a high intensity inhalation action can result in the inhalation of a large amount of aerosol in a short period of time, the aerosol generator can be operated to generate a large amount of aerosol in a short period of time in response to the high intensity inhalation action.

[0328] After the step of changing the temperature profile (S310), a step (S320) of controlling the operation of the aerosol generator using the changed temperature profile can be executed.

[0329] According to the operation of the aerosol generating device according to the above-described embodiment, the operation of the aerosol generator can be controlled to reflect the characteristics of the user's inhalation motion, so that an efficient aerosol generating operation can be implemented.

[0330] 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.

[0331] 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.

[0332] 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.

[0333] The embodiments relate to an aerosol generating device capable of directly, rapidly and precisely detecting changes in the flow of air or aerosol flowing through a passage.

Claims

1. An aerosol generator for generating an aerosol; A passage for air to be supplied to the aerosol generator or for aerosol generated from the aerosol generator to flow; and An aerosol generating device comprising: a sensor disposed in the passage to close at least a portion of the passage, and for generating a signal by deforming at least a portion of the portion by the flow of air or aerosol in the passage.

2. In paragraph 1, The above sensor is, A deformable portion that can be deformed by the flow of air or aerosol flowing through the above passage, An aerosol generating device comprising a resistance part disposed in the above-described deformation part and having an electrical resistance that changes by being deformed together with the above-described deformation part.

3. In paragraph 2, An aerosol generating device in which the deformation part is deformed by the flow of air or aerosol flowing through the passage, thereby opening the passage, and the passage is closed when the deformation part is restored.

4. In paragraph 1, The above sensor is, A plurality of deformable parts that are deformed by the flow of air or aerosol flowing through the above passage, An aerosol generating device comprising a resistor having an electrical resistance that is disposed in at least one of the above-mentioned deformation parts and deforms together with at least one of the above-mentioned deformation parts.

5. In paragraph 1, The above sensor is, A terminal located on the wall of the above passage, and An aerosol generating device comprising a deformation part that is deformed by the flow of air or aerosol flowing through the above passage and is electrically connected to or electrically disconnected from the terminal.

6. In Paragraph 1, The above sensor is, A mesh portion disposed in the passage, comprising a plurality of holes through which air or aerosol passes, and deformed by the flow of air or aerosol; An aerosol generating device comprising a resistance portion arranged in the mesh portion and having an electrical resistance that changes with the deformation together with the mesh portion.

7. In paragraph 1, The above sensor is, A mesh portion of electrically conductive material placed in the above passage, An aerosol generating device comprising a deformation portion that is deformed by a flow of air or aerosol and is electrically connected to or electrically separated from the mesh portion.

8. In paragraph 7, An aerosol generating device in which an electrical signal is generated by the above-mentioned deformation part being electrically connected to the above-mentioned mesh part.

9. In Paragraph 7, An aerosol generating device in which the sensor further includes a detector for detecting the electrical resistance of the deformation part, and the electrical resistance of the deformation part detected by the detector changes as the deformation part is electrically connected to the mesh part.

10. In paragraph 1, The above sensor is, A deformation part disposed in one area of ​​the above passage and deformed by the flow of air or aerosol, and A terminal placed in another area of ​​the above passage, and An aerosol generating device comprising a connecting terminal disposed in the deformation portion and electrically connected to or electrically disconnected from the terminal by deformation of the deformation portion.

11. In paragraph 1, The above sensor is, A moving part positioned to be movable in the passage by the flow of air or aerosol in the passage, and An aerosol generating device comprising a signal generating unit connected to the moving part and deformed by the movement of the moving part to generate a signal.

12. In paragraph 1, The above aerosol generator includes a generation chamber in which an aerosol is generated, and The above-mentioned aerosol generating device further includes a mouthpiece for discharging aerosol to the outside, and One end of the above passage is connected to the above-mentioned generating chamber and the other end of the above-mentioned passage is connected to the above-mentioned mouthpiece, and An aerosol generating device in which at least a portion of the sensor is deformed by a flow of air or aerosol to open the passage, and when the flow of air or aerosol in the passage is stopped, the at least a portion of the sensor closes the passage to block a droplet from entering the generating chamber.

13. In paragraph 1, The above aerosol generator includes a generation chamber in which an aerosol is generated, and An aerosol generating device, wherein one end of the passage is connected to the generating chamber and the other end of the passage is connected to the outside, so that external air is delivered to the generating chamber through the passage.

14. In paragraph 1, The above aerosol generator includes a heater for heating an aerosol generating material, and The above aerosol generating device further includes a controller for controlling the operation of the heater, and An aerosol generating device wherein the controller detects that an inhalation action has occurred based on the signal of the sensor, and initiates operation of the heater when the inhalation action has occurred.

15. In paragraph 1, The above aerosol generator includes a heater for heating an aerosol generating material, and The above aerosol generating device further includes a controller for controlling the operation of the heater based on a predetermined temperature profile, and The above controller changes the temperature profile to control the operation of the heater based on the signal of the sensor, an aerosol generating device.

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