Aerosol generating device

Abstract

An aerosol generating device comprises: a housing including a receiving space for accommodating at least a portion of an aerosol generating article; a battery; a source unit located inside the housing for generating electromagnetic waves using power supplied from the battery; a radiating unit located inside the housing for heating an aerosol generating article by radiating the electromagnetic waves generated from the source unit in a direction toward the aerosol generating article contained in the receiving space; a sensor for detecting sound generated in the receiving space; and a processor operatively connected to the battery, the source unit, and the sensor, wherein the processor can detect whether metal has been inserted into the receiving space based on the sound detected through the sensor.

Description

Technology Field

[0001] The embodiments relate to a dielectric heating type aerosol generating device capable of detecting whether a metal is inserted. Background Technology

[0002] Recently, there has been an increasing demand for alternative methods to overcome the disadvantages of conventional cigarettes. For example, there is an increasing demand for devices that generate aerosols by heating an aerosol-generating article (or 'aerosol-generating material') using an aerosol-generating device, rather than by burning a cigarette to generate an aerosol.

[0003] Previously, aerosol generating devices that heated aerosol-generating items using resistance heating or induction heating methods were common, but recently, aerosol generating devices using dielectric heating methods that heated aerosol-generating items using electromagnetic waves have also been proposed.

[0004] A dielectric heating aerosol generator refers to a device capable of heating an aerosol-generating item by vibrating a dielectric material contained within the item using electromagnetic waves and generating frictional heat from the dielectric. Compared to other heating methods, dielectric heating aerosol generators can heat the item uniformly while effectively insulating the heat generated during the heating process; consequently, interest in dielectric heating aerosol generators is gradually increasing. The problem to be solved

[0005] An aerosol generating device of the dielectric heating method can, for example, radiate electromagnetic waves to an aerosol generating article through an antenna positioned to surround the outer surface of the aerosol generating article, thereby vibrating the molecules of the dielectric within the aerosol generating article, and heat the aerosol generating article through the frictional heat generated by the vibration of the molecules.

[0006] However, in the case of such dielectric heating-type aerosol generating devices, if electromagnetic waves are radiated while a substance other than the aerosol generating material is introduced into the heating chamber (or 'containment space'), safety issues may arise or the device may malfunction or be damaged. For example, if electromagnetic waves are radiated while metal, rather than the aerosol generating material, is inserted inside the heating chamber, the metal may reflect the electromagnetic waves, causing a discharge or spark inside the heating chamber. As a result, high temperatures or a fire may occur inside the heating chamber, which may transfer high temperatures to the user or cause damage to the components of the aerosol generating device (e.g., internal circuits or batteries).

[0007] As such, if an aerosol generating device operates with metal inserted into the heating chamber instead of an aerosol generating material, safety issues or malfunctions or failures of the device may occur; therefore, unlike conventional resistance heating or induction heating aerosol generating devices, a method to detect whether metal has been inserted is required in dielectric heating aerosol generating devices.

[0008] Accordingly, the aerosol generating device according to various embodiments of the present disclosure aims to prevent safety issues or malfunctions of the aerosol generating device caused by metal by providing an aerosol generating device capable of determining whether metal is inserted into the heating chamber based on the waveform of sound generated inside the heating chamber and preventing the radiation of electromagnetic waves when metal is inserted.

[0009] The problems to be solved by the embodiments of the present disclosure are not limited to those described above, and problems not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings. means of solving the problem

[0010] An aerosol generating device according to one embodiment comprises: a housing including a receiving space for accommodating at least a portion of an aerosol generating article; a battery; a source unit located inside the housing for generating electromagnetic waves using power supplied from the battery; a radiating unit located inside the housing for heating an aerosol generating article by radiating the electromagnetic waves generated by the source unit in a direction toward the aerosol generating article accommodating the receiving space; a sensor for detecting sound generated in the receiving space; and a processor operatively connected to the battery, the source unit, and the sensor, wherein the processor can detect whether metal is inserted into the receiving space based on the sound detected through the sensor. Effects of the invention

[0011] An aerosol generating device according to various embodiments of the present disclosure can improve the safety of the aerosol generating device by blocking the occurrence of discharge phenomena or sparks caused by metal even if unintended metal is inserted into the device.

[0012] The effects of the embodiments are not limited to the effects described above, and unmentioned effects will be clearly understood by those skilled in the art from this specification and the accompanying drawings. Brief explanation of the drawing

[0013] FIG. 1 is a block diagram of an aerosol generating device according to one embodiment. FIG. 2 is a perspective view of an aerosol generating device according to one embodiment. FIG. 3 is a cross-sectional view of an aerosol generating device according to one embodiment. FIG. 4 is a cross-sectional view showing a state in which metal is inserted into the receiving space of the aerosol generating device of FIG. 3. FIG. 5 is a flowchart illustrating a control operation according to whether or not a metal is inserted in an aerosol generating device according to one embodiment. FIG. 6 is a flowchart illustrating the operation of detecting whether a metal is inserted in an aerosol generating device according to another embodiment. Figure 7 is a graph showing the waveform of sound detected by the sensor of the aerosol generating device and data regarding the waveform of sound stored in advance. Specific details for implementing the invention

[0014] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components are assigned the same reference numeral regardless of the drawing symbols, and redundant descriptions thereof will be omitted. In relation to the description of the drawings, similar drawing symbols may be used for similar or related components.

[0015] The suffixes "module" and "unit" for components used in the following description are assigned or used interchangeably solely for the sake of ease of drafting the specification, and do not inherently possess distinct meanings or roles. Meanwhile, the suffixes "module" or "unit" may include units implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. "Module" or "unit" may be a component formed as a whole, or the smallest unit of said component or a part thereof that performs one or more functions. For example, "module" or "unit" may be implemented in the form of an application-specific integrated circuit (ASIC).

[0016] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art may obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that the drawings include all modifications, equivalents, and substitutions that fall within the concept and technical scope of this disclosure.

[0017] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0018] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0019] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0020] Embodiments of the present disclosure may be implemented as software comprising one or more instructions stored in a storage medium (e.g., memory (17)) readable by a machine (e.g., aerosol generating device (1)). For example, a processor (e.g., control unit (12)) of the machine (e.g., aerosol generating device (1)) may call at least one of the one or more instructions stored in 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 instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0021] FIG. 1 is a block diagram of an aerosol generating device (1) according to one embodiment.

[0022] According to one embodiment, an aerosol generating device (1) may include a control unit (10), a source unit (20), and a radiating unit (30). The control unit (10) may refer to a circuit for controlling the basic operation of the aerosol generating device (1). The source unit (20) may refer to a circuit for generating an RF (Radio Frequency) signal under the control of the control unit (10). The radiating unit (30) may be a device for radiating the RF signal generated by the source unit (20) in the form of an electromagnetic wave into a space (hereinafter, insertion space) into which an aerosol generating article is inserted. The charges or ions of a dielectric (e.g., glycerin) contained in the aerosol generating article may vibrate or rotate due to the radiated electromagnetic wave (e.g., RF signal), and the aerosol generating article may be heated as the dielectric heats up due to the frictional heat generated during the process of the charges or ions vibrating or rotating. In other words, the aerosol generating device (1) may be a device that generates aerosol by heating an aerosol generating article using a dielectric heating method.

[0023] In one example, the control unit (10) may include a power connector (11), a charging circuit (12), a power source (13), a first power converter (14), a second power converter (15), a third power converter (16) and / or a processor (17). Additionally, the source unit (20) may include an RF signal generation circuit (21), a drive amplifier (22), a power amplifier (23), a directional coupler (24) and / or a temperature sensing circuit (25). However, it will be understood by those skilled in the art related to this embodiment that, depending on the design of the aerosol generating device (1), some of the components shown in FIG. 1 may be omitted or new components may be added.

[0024] The power connector (11) may refer to a physical connection device used to transmit and receive power by being electrically connected to an electronic device or system (e.g., an external power source) outside the aerosol generating device (1). For example, the power connector (11) may receive power from an external power source and transmit the received power to a component that requires charging (e.g., a power source (13)). The power connector (11) may also provide a path for data transmission. The aerosol generating device (1) may transmit and receive data with an external electronic device or system (e.g., a smartphone, a computer, etc.) through the power connector (11). The power connector (11) may include a USB (Universal Serial Bus) power connector, a DC (Direct Current) power connector, etc. In one example, the power connector (11) may be a USB-C type connector capable of supplying a 9V DC voltage at a current of 1A, but is not necessarily limited thereto. The power connector (11) may also include an interface for transmitting and receiving power wirelessly.

[0025] The charging circuit (12) may refer to a circuit for charging the power source (13). The charging circuit (12) may charge the power source (13) using power delivered from the power connector (11). In one example, the charging circuit (12) may be implemented as a charger IC, which is an integrated circuit (IC) that performs functions for efficiently and safely charging the power source (13). The charging circuit (12) may monitor the charging status of the power source (13) or optimize the charging process by monitoring the voltage, current, and / or temperature of the power source (13). For example, the charging circuit (12) may detect the state of the power source (13) and prevent overcharging or over-discharging by providing an appropriate charging voltage and current.

[0026] The power source (13) can supply power for the operation of the aerosol generating device (1). The power source (13) may include one or more rechargeable batteries. The power source (13) can supply power to the radiating unit (30) so that the radiating unit (30) can heat the aerosol generating article by radiating electromagnetic waves (e.g., RF signals) into the insertion space. Here, power supply to the radiating unit (30) may have the same meaning as power supply to the source unit (20). Additionally, the power source (13) can supply power required for the operation of the processor (17), RF signal generating circuit (21), driving amplifier (22), power amplifier (23), temperature sensing circuit (25), etc. In one example, the power source (13) may be a lithium polymer (LiPoly) battery, but is not limited thereto. The power source (13) may be a replaceable type (detachable) battery (hereinafter referred to as a removable battery). The removable battery may be mounted in a battery housing provided within the aerosol generating device (1) or removed from the battery housing. The removable battery may also be charged via wired and / or wireless connections.

[0027] The aerosol generating device (1) may include a power conversion circuit for converting power supplied from a power source (13) into power (e.g., voltage and / or current) suitable for other components. The power conversion circuit may include at least one of a buck converter, a buck-boost converter, a boost converter, a Zener diode, and a low-dropout regulator. Additionally, the power conversion circuit may include a DC / AC converter (e.g., an inverter) as needed.

[0028] In one example, the aerosol generating device (1) may include a first power converter (14), a second power converter (15), and a third power converter (16). The first power converter (14) is an LDO regulator for supplying power (e.g., DC 3.3V) suitable for a processor (17), the second power converter (15) is a buck-boost converter for supplying power (e.g., DC 5V) suitable for a temperature sensing circuit (25), an RF signal generating circuit (21), and a driving amplifier (22), and the third power converter (16) may be a boost converter for supplying power (e.g., DC 12V / 25W) suitable for a power amplifier (23).

[0029] However, the first power converter (14), the second power converter (15), and the third power converter (16) are not limited to the examples described above and may include other types of power converter circuits. Additionally, although FIG. 1 is illustrated as having three power converters, the aerosol generating device (1) may include more than three power converters or fewer power converters. In one example, at least some of the first power converter (14), the second power converter (15), and the third power converter (16) may be integrated into a single power converter.

[0030] The processor (17) can control the overall operation of the aerosol generating device (1). For example, the processor (17) can directly or indirectly control the charging and discharging of the power source (13) using the charging circuit (12). Additionally, the processor (17) can control the voltage and / or current output by the power conversion circuit by adjusting the frequency and / or duty ratio of the current pulse input to at least one switching element of the power conversion circuit. In addition to the components described above, the processor (17) can control the overall operation of other components to be described later.

[0031] The processor (17) may be implemented as an array of multiple logic gates, or as a combination of a general-purpose MCU (micro controller unit) (or microprocessor) and memory storing a program that can be executed on such MCU. Additionally, it will be understood by those skilled in the art to which this embodiment belongs that the processor (17) may be implemented in other forms of hardware.

[0032] The RF signal generation circuit (21) can generate an RF signal based on power delivered from the power source (13) or the second power converter (15). The RF signal may mean a signal having a frequency within the range of 300 MHz to 300 GHz. In one example, the RF signal may have a frequency of 1 GHz to 100 GHz. Additionally, the RF signal may have a frequency in the Industrial Scientific and Medical Equipment (ISM) band, for example, 915 MHz, 2.45 GHz, and / or 5.8 GHz.

[0033] The RF signal generation circuit (21) may include a voltage-controlled oscillator (VCO) that generates an RF signal having a different frequency depending on the input voltage. The RF signal generation circuit (21) may receive a control signal (e.g., a DC signal) from the processor (17) and generate an RF signal having a frequency corresponding to the received control signal. The processor (17) may store the control signal corresponding to the desired frequency in the form of a look-up table, or calculate the control signal corresponding to the desired frequency in real time through at least one operation.

[0034] In one example, the aerosol generating device (1) may further include a digital-to-analog converter for converting a digital control signal output from a processor (17) into an analog control signal. An RF signal generating circuit (21) may receive an analog control signal and generate an RF signal having a frequency corresponding to the received analog control signal.

[0035] The driving amplifier (22) can amplify the RF signal generated by the RF signal generation circuit (21). For example, the driving amplifier (22) can provide an input signal suitable for the next stage component (e.g., power amplifier (23)) by amplifying the signal level (e.g., amplitude) of the RF signal. The driving amplifier (22) can minimize signal distortion by maintaining high linearity. However, since the driving amplifier (22) is an amplifier focused on raising the signal level, it can provide relatively low output power.

[0036] The power amplifier (23) can amplify the power of the RF signal received from the driving amplifier (22). The power amplifier (23) may be an amplifier focused on providing sufficient power to the final output device (e.g., the radiator (30)). For example, the power amplifier (23) may provide a high-power RF signal to the radiator (30) so that the radiator (30) can radiate electromagnetic waves into the insertion space to heat the aerosol generating article. The power amplifier (23) may perform the amplification operation using power received through a third power converter (16) that provides higher power and / or voltage than the second power converter (15).

[0037] The driving amplifier (22) and the power amplifier (23) may include transistors such as a bipolar junction transistor (BJT) or a field effect transistor (FET), or vacuum tubes. In one example, the driving amplifier (22) and the power amplifier (23) may be GaN (Gallium Nitride) transistors capable of handling high efficiency, high speed, and high voltage, but are not necessarily limited thereto. The driving amplifier (22) and the power amplifier (23) may also include an operational amplifier.

[0038] Meanwhile, in FIG. 1, the driving amplifier (22) and the power amplifier (23) are shown as separate amplifiers, but the driving amplifier (22) and the power amplifier (23) can be integrated into a single amplifier. Additionally, the driving amplifier (22) and / or the power amplifier (23) may be configured as a series connection, a parallel connection, and / or a combination thereof of a plurality of amplifiers.

[0039] The radiating member (30) may include at least one antenna for radiating electromagnetic waves into space. The at least one antenna may have a size and shape suitable for the size and shape of the aerosol generating article. For example, if the aerosol generating article is cylindrical, the at least one antenna may be tubular, surrounding the cylindrical aerosol generating article. Here, the fact that the shape of the antenna is tubular may mean that the overall shape of the antenna is tubular. In other words, if the antenna is formed from a metal (e.g., SUS) track, it may mean that the overall shape of the entire track is tubular. The shape of the at least one antenna is not limited to the examples described above and may include various shapes such as a flat plate shape, a curved plate shape, etc.

[0040] The radiating unit (30) can heat an aerosol generating article by radiating electromagnetic waves (e.g., amplified RF signal or transmitted RF signal) into the insertion space. In order for the heating efficiency of the aerosol generating article to be maximized, resonance of the electromagnetic waves must occur within the insertion space. The resonance condition of the insertion space (e.g., resonance frequency) may vary depending on the amount of dielectric material contained in the inserted aerosol generating article, etc. The processor (17) can control the frequency of the RF signal generated by the RF signal generating circuit (21) so that it corresponds to or approaches the resonance condition of the insertion space by adjusting the control signal input to the RF signal generating circuit (21). The processor (17) may use a directional coupler (24) to obtain information about the resonance condition of the insertion space.

[0041] The directional coupler (24) may refer to a passive element having a waveguide structure capable of separating incident waves and reflected waves. The directional coupler (24) can receive an RF signal transmitted from the power amplifier (23) toward the radiating unit (30) and an electromagnetic wave reflected from the insertion space after being radiated by the radiating unit (30), respectively. The directional coupler (24) can separate the transmitted RF signal and the reflected electromagnetic wave and transmit them to the processor (17).

[0042] In one example, the aerosol generating device (1) may further include an analog-to-digital converter for converting the analog output of the directional coupler (24) into a digital output. The A / D converter may be built into the processor (17) or may exist as a separate configuration outside the processor (17). By monitoring the output of the directional coupler (24), the processor (17) can analyze the characteristics of the transmitted RF signal (e.g., current, voltage, power, phase and / or frequency) and the characteristics of the reflected electromagnetic wave (e.g., current, voltage, power, phase and / or frequency).

[0043] The processor (17) can determine whether the operation of the source unit (20) is being performed as intended based on the characteristics of the transmitted RF signal. Additionally, the characteristics of the transmitted RF signal, along with the characteristics of the reflected electromagnetic waves, can be used to determine the heating efficiency of the source unit (20) or the radiating unit (30). The processor (17) can control the source unit (20) so that the heating efficiency of the source unit (20) or the radiating unit (30) is maximized. For example, the processor (17) can adjust the frequency of the RF signal generated by the RF signal generation circuit (21) so that the power of the reflected electromagnetic waves is minimized. Minimizing the power of the reflected electromagnetic waves may mean that the frequency of the RF signal approaches the resonance condition of the insertion space. The characteristics of the transmitted RF signal can provide a criterion for whether the power of the reflected electromagnetic waves is minimized.

[0044] Since electromagnetic resonance may occur in the insertion space depending on the frequency of the RF signal, the insertion space may be referred to as a resonant section. At least a portion of the insertion space may be surrounded by at least one shielding member to prevent electromagnetic waves from leaking outside the aerosol generating device (1). According to one embodiment, the insertion space may further include a physical structure to ensure that the resonance condition is contained within a controllable range by the processor (17). The physical structure may include at least one conductor, and the resonance condition of the insertion space may vary depending on the arrangement, thickness, length, etc. of the conductor. Additionally, the physical structure may include a space for accommodating a dielectric with low electromagnetic wave absorption, separate from the dielectric included in the aerosol generating article. A dielectric with low electromagnetic wave absorption can change the resonance frequency of the entire resonant section without absorbing the energy that must be transferred to the heated body. Accordingly, even if the resonant section is miniaturized, the resonance condition can be determined within a controllable range by the processor (17).

[0045] A temperature sensing circuit (25) may be placed in contact with or adjacent to components included in the source section (20) to measure the temperature of the source section (20). For example, the temperature sensing circuit (25) may be placed in contact with or adjacent to at least one of the RF signal generation circuit (21), the driving amplifier (22), and the power amplifier (23). Heat may be generated due to limited efficiency during the generation and / or amplification of the RF signal, and if excessive heat is generated, it may have a negative effect on the components included in the source section (20) or other components included in the aerosol generating device (1). The temperature measured by the temperature sensing circuit (25) may be used to prevent overheating of the source section (20).

[0046] The processor (17) receives the temperature (or a value corresponding to the temperature) measured by the temperature sensing circuit (25) and can stop the operation of the source unit (20) if it is determined that the source unit (20) has overheated. For example, the processor (17) can stop the operation of the source unit (20) by stopping the power supply to the source unit (20) or by transmitting a control signal. In the following, the term "power supply to the source unit (20)" is used to mean controlling whether the source unit (20) operates.

[0047] The temperature sensing circuit (25) may include at least one temperature sensor among a thermocouple, an RTD (Resistance Temperature Detector), a thermistor, a semiconductor temperature sensor, and an optical temperature sensor. In one example, the temperature sensing circuit (25) may be implemented as a chip-type sensor (e.g., an NTC (Negative Temperature Coefficient) sensor) to minimize the area occupied, but is not necessarily limited thereto.

[0048] Meanwhile, the aerosol generating device (1) may include additional components in addition to the components shown in FIG. 1. For example, the aerosol generating device (1) may further include a sensor unit, an output unit, an input unit, a communication unit, and a memory. Additionally, if the aerosol generating device (1) is a hybrid type device that uses both an aerosol generating article and a cartridge, the aerosol generating device (1) may further include a cartridge heater. The cartridge heater can heat the medium and / or aerosol generating material within the cartridge by receiving power from the power source (13).

[0049] According to one embodiment, the sensor unit may detect the state of the aerosol generating device (1) or the state of the surroundings of the aerosol generating device (1) and transmit the detected information to the processor (17). For example, the sensor unit 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 motion detection sensor. Meanwhile, the sensor unit may further include various sensors, such as a liquid residue sensor for detecting the liquid residue in the cartridge and a water immersion sensor for detecting the immersion of the aerosol generating device (1).

[0050] According to one embodiment, a temperature sensor can detect the temperature of an insertion space or an aerosol-generating article. The temperature sensor may be positioned in contact with or adjacent to the insertion space or the aerosol-generating article to directly measure the temperature of the insertion space or the aerosol-generating article. Additionally, the temperature sensor may be positioned spaced apart from the insertion space or the aerosol-generating article to indirectly (e.g., non-contact) measure the temperature of the insertion space or the aerosol-generating article. In one example, the temperature sensor may include an optical temperature sensor (e.g., an infrared temperature sensor).

[0051] According to one embodiment, a temperature sensor can detect the temperature of the power source (13). The temperature sensor may be positioned adjacent to the power source (13). For example, the temperature sensor may be attached to one side of the power source (13) (e.g., battery) and / or mounted on one side of a printed circuit board. For example, the aerosol generating device (1) may include a protection circuit module (PCM), and the temperature sensor may be positioned adjacent to the power source (13) together with the protection circuit module.

[0052] According to one embodiment, a temperature sensor may be placed inside a housing (not shown) of an aerosol generating device (1) to detect the temperature inside the housing (not shown).

[0053] According to one embodiment, the puff sensor can detect the user's puff.

[0054] 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 processor (17) 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 the airflow path through which the gas flows. The puff sensor may be positioned in the aerosol generating device (1) in correspondence with the airflow path through which the gas flows.

[0055] As another example, the puff sensor may include a temperature sensor. When a user's puff occurs, a temporary temperature drop may occur in the airflow path, insertion space, aerosol generating item, etc. The processor (17) can detect the user's puff based on a signal corresponding to the temperature of the airflow path, etc. output from the temperature sensor.

[0056] As another example, the puff sensor may include both a pressure sensor and a temperature sensor. In this case, the temperature sensor may measure the 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 processor (17) may receive the signals and correct the signal corresponding to the internal pressure based on the signal corresponding to the temperature.

[0057] As another example, the puff sensor may include a capacitance sensor. In the present disclosure, the capacitance sensor may be referred to as a cap sensor or a capacitive sensor. When a user's puff occurs, a temperature change and / or aerosol flow may occur within the insertion space, and accordingly, the dielectric constant inside the insertion space may change. The processor (17) can detect the user's puff based on a signal corresponding to the dielectric constant inside the insertion space, etc., output from the capacitance sensor.

[0058] The puff sensor is not limited to the examples described above and can be implemented as various sensors to detect the user's puff.

[0059] According to one embodiment, an insertion detection sensor can detect the insertion and / or removal of an aerosol-generating article. The insertion detection sensor may be installed around the insertion space.

[0060] For example, the insertion detection sensor may include a capacitance sensor. The capacitance sensor may include at least one conductor, and the at least one conductor may be disposed adjacent to the insertion space. When an aerosol-generating article is inserted into or removed from the insertion space, the dielectric constant around the conductor may change. The processor (17) may detect the insertion and / or removal of the aerosol-generating article based on a signal corresponding to the dielectric constant inside the insertion space, etc., output from the capacitance sensor.

[0061] As another example, the insertion detection sensor may include an inductive sensor. The inductive sensor may include at least one coil, and said at least one coil may be positioned adjacent to the insertion space. If the aerosol generating article (e.g., a wrapper of the aerosol generating article) includes a conductor, when the aerosol generating article is inserted into the insertion space or removed from the insertion space, a change in the magnetic field may occur around the coil through which the current flows. The processor (17) 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 alternating current, current value, voltage value, inductance value, impedance value, etc.). Alternatively, a susceptor (SUS), etc., may be included in the aerosol generating article (e.g., the medium part of the aerosol generating article). In this case as well, a change in the magnetic field around the coil may occur based on the insertion or removal of a susceptor, etc., within the insertion space, and the processor (17) may detect the insertion and / or removal of an aerosol-generating article based on the characteristics of the current of the inductive sensor.

[0062] The insertion detection sensor is not limited to the examples described above and may be implemented as various sensors (e.g., proximity sensors, etc.) for detecting the insertion and / or removal of an aerosol-generating article. Additionally, the insertion detection sensor may include any combination of the examples described above. According to one embodiment, the insertion detection sensor may include a switch, etc., for detecting pressure caused by an aerosol-generating article.

[0063] According to one embodiment, a reuse detection sensor can detect whether an aerosol-generating article is 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 change in color may occur in a part of the wrapper covering the outside of the aerosol-generating article due to the generated aerosol or heating. The color sensor may output a signal corresponding to an optical characteristic (e.g., wavelength of light) corresponding to the color of the wrapper based on light reflected from the wrapper. When the processor (17) detects a change in color in a part of the wrapper, it may determine that the aerosol-generating article inserted into the insertion space has already been used.

[0064] According to one embodiment, the over-humidity detection sensor can detect whether the aerosol generating article is in an over-humid state. For example, the over-humidity detection sensor may include a capacitance sensor. The capacitance sensor may include at least one conductor disposed adjacent to an insertion space. The processor (17) can detect whether the aerosol generating article is in an over-humid state based on the level of a signal corresponding to the dielectric constant, etc., output from the capacitance sensor. For example, the processor (17) can determine the level range in which the level of the signal is included based on a look-up table, and determine the amount of moisture for the aerosol generating article based on the confirmed level range.

[0065] According to one embodiment, the cigarette identification sensor can detect whether an aerosol-generating article is genuine or / or detect the type of aerosol-generating article.

[0066] For example, a cigarette identification sensor may include a light sensor for detecting an identification material (or identification mark) located on the outer surface (e.g., wrapper) of an aerosol-generating article. The light sensor may irradiate light toward the identification material (or identification mark) of the aerosol-generating article and detect whether the aerosol-generating article is genuine and / or of a specific type based on the reflected light. For example, the identification material may include a material that emits light of a specific band of wavelengths based on the irradiated light. The processor (17) may detect whether the aerosol-generating article is genuine and / or of a specific type based on the range of the wavelengths.

[0067] As another example, the cigarette identification sensor may include a capacitive sensor. The dielectric constant inside the insertion space may vary depending on the type of aerosol-generating item inserted into the insertion space. The processor (17) can detect whether the aerosol-generating item is genuine and / or of the type based on a signal corresponding to the dielectric constant inside the insertion space, etc., output from the capacitive sensor.

[0068] As another example, the cigarette identification sensor may include an inductive sensor. If a conductor is included in the wrapper and / or interior (e.g., the medium) of the aerosol generating article inserted into the insertion space, the characteristics of the current detected by the inductive sensor when the aerosol generating article is inserted into the insertion space (e.g., frequency of alternating current, current value, voltage value, inductance value, impedance value, etc.) may differ depending on the type of aerosol generating article inserted into the insertion space. The processor (17) can detect whether the inserted aerosol generating article is genuine and / or of the type based on the characteristics of the current output from or detected by the inductive sensor.

[0069] The cigarette identification sensor is not limited to the examples described above and may be implemented as various sensors for detecting whether an aerosol-generating article is genuine or / or for detecting the type of an aerosol-generating article. Additionally, the cigarette identification sensor may include any combination of the examples described above.

[0070] According to one embodiment, the cartridge detection sensor can 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.

[0071] According to one embodiment, a cap detection sensor can detect the mounting and / or removal of a cap. For example, the cap detection sensor may 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 may include a structure that covers at least a portion of a cartridge mounted or inserted into the aerosol generating device (1), or covers at least a portion of the housing of the aerosol generating device (1). The cap detection sensor may output a signal corresponding to the mounting or removal when the cap is mounted on the housing or removed from the housing, and the processor (17) may detect the mounting or removal of the cap based on the signal corresponding to the mounting or removal.

[0072] According to one embodiment, the motion detection sensor can detect the movement of the aerosol generating device (1). The motion detection sensor may be implemented as at least one of an accelerometer or a gyro sensor.

[0073] According to one embodiment, the sensor unit may further include at least one of a humidity sensor, an atmospheric pressure sensor, a geomagnetic sensor, a position sensor (Global Positioning System, GPS), or a proximity sensor in addition to the aforementioned sensors. Since the function of each sensor can be intuitively inferred by a person skilled in the art from its name, a detailed description may be omitted.

[0074] According to one embodiment, the output unit may output information regarding the state of the aerosol generating device (1). The output unit may include a display, a haptic unit, and / or an acoustic output unit, but is not limited thereto. For example, information regarding the aerosol generating device (1) may include the charging / discharging state of the power supply (13) of the aerosol generating device (1), the operating state of the source unit (20) or the radiation unit (30), the insertion / removal state of the aerosol generating article and / or cartridge, the mounting and / or removal state of the cap, or a state in which the use of the aerosol generating device (1) is restricted (e.g., detection of an abnormal article). The display may visually provide information regarding the state of the aerosol generating device (1) to the user. For example, the display may include an LED (light emitting diode) light-emitting element, a Liquid Crystal Display (LCD), an Organic Light Emitting Diodes (OLED), etc. If the display includes a touch pad, it may also be used as an input unit. The haptic unit can provide tactile information about the state of the aerosol generating device (1) to the user. For example, the haptic unit may include a vibration motor, a piezoelectric element, an electric stimulation device, etc. The acoustic output unit can provide auditory 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 externally.

[0075] According to one embodiment, the input unit can receive information input by a user. For example, the input unit may include a touch panel, a button, a keypad, a dome switch, a jog wheel, a jog switch, etc.

[0076] According to one embodiment, the memory is hardware that stores various data processed within the aerosol generating device (1), and can store data processed by the processor (17) and data to be processed. For example, the memory 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.), RAM (random access memory), SRAM (static random access memory), ROM (read-only memory), EEPROM (electrically erasable programmable read-only memory), PROM (programmable read-only memory), magnetic memory, a magnetic disk, and an optical disk. For example, the memory may store data such as the operating time of the aerosol generating device (1), the maximum number of puffs, the current number of puffs, at least one temperature profile, and the user's smoking pattern.

[0077] According to one embodiment, the communication unit may include at least one component for communication with another electronic device (e.g., a portable electronic device). For example, the communication unit may include a Bluetooth communication unit, a Bluetooth Low Energy (BLE) communication unit, a Near Field Communication unit, a wireless local area network (WLAN) communication unit, a Zigbee communication unit, an infrared Data Association (IrDA) communication unit, a Wireless Fidelity Direct (WFD) communication unit, an ultra-wideband (UWB) communication unit, an Adaptive Network Topology (ANT)+ communication unit, a cellular network communication unit, an internet communication unit, a computer network (e.g., LAN or WAN) communication unit, etc.

[0078] According to one embodiment, the processor (17) can control the temperature of the insertion space or aerosol generating article by controlling the amplification rate of the source unit (20) (e.g., power amplifier (23)). The processor (17) can control the amplification rate of the source unit (20) (e.g., power amplifier (23)) based on the temperature of the insertion space or aerosol generating article detected using a temperature sensor. The processor (17) can control the amplification rate of the source unit (20) (e.g., power amplifier (23)) based on a temperature profile and / or power profile stored in memory.

[0079] Additionally, the processor (17) can control the temperature of the cartridge heater by controlling the supply of power from the power supply (13) to the cartridge heater. The processor (17) can control the temperature of the cartridge heater and / or the power supplied to the cartridge heater based on the temperature of the cartridge heater detected using a temperature sensor. The processor (17) can control the temperature of the cartridge heater and / or the power supplied to the cartridge heater based on a temperature profile and / or power profile stored in memory.

[0080] According to one embodiment, the processor (17) can prevent the insertion space, the aerosol generating article, and / or the cartridge heater from overheating. For example, the processor (17) can control the operation of the power conversion circuit to reduce the amount of power supplied to the source unit (20) or the cartridge heater, or to stop the power supply to the source unit (20) or the cartridge heater, based on the fact that the temperature of the insertion space, the aerosol generating article, and / or the cartridge heater exceeds a preset limit temperature.

[0081] According to one embodiment, the processor (17) can control the power supply to the source unit (20) or the cartridge heater based on the result detected by the sensor unit.

[0082] According to one embodiment, the processor (17) may control the power supply to the source unit (20) or the cartridge heater based on the insertion and / or removal of an aerosol-generating article into the insertion space. For example, the processor (17) may control the power supply to the source unit (20) or the cartridge heater when it is determined that an aerosol-generating article has been inserted into the insertion space using an insertion detection sensor. The processor (17) may cut off the power supply to the source unit (20) or the cartridge heater when it is determined that an aerosol-generating article has been removed from the insertion space using an insertion detection sensor. The processor (17) may also determine that an aerosol-generating article has been removed from the insertion space if the temperature of the insertion space or the aerosol-generating article is above a limit temperature or if the temperature change slope of the insertion space or the aerosol-generating article is above a set slope.

[0083] According to one embodiment, the processor (17) can control the power supply time and / or power supply amount for the source unit (20) or cartridge heater based on the state of the aerosol generating article. For example, the processor (17) can increase the power supply time (e.g., preheating time) for the source unit (20) or cartridge heater if it is determined that the aerosol generating article is in an over-humid state using an over-humidity detection sensor.

[0084] According to one embodiment, the processor (17) can control the power supply to the source unit (20) or the cartridge heater based on whether the aerosol generating article is reused. For example, if the processor (17) determines that the aerosol generating article has been used, it can cut off the power supply to the source unit (20) or the cartridge heater.

[0085] According to one embodiment, the processor (17) can control the power supply to the source unit (20) or the cartridge heater based on whether the cartridge is coupled and / or removed. For example, the processor (17) can use a cartridge detection sensor to determine that the cartridge is separated, and if it is determined that the cartridge is separated, it can stop the power supply to the source unit (20) or the cartridge heater or control the power supply so that power is not supplied to the source unit (20) or the cartridge heater.

[0086] According to one embodiment, the processor (17) can control the power supply to the source unit (20) or the cartridge heater based on whether the aerosol generating material of the cartridge is depleted. For example, the processor (17) may determine that the aerosol generating material of the cartridge is depleted if it determines that the temperature of the cartridge heater exceeds a limit temperature while preheating the cartridge heater (i.e., during the preheating period). If it determines that the aerosol generating material of the cartridge is depleted, the processor (17) may cut off the power supply to the source unit (20) or the cartridge heater.

[0087] According to one embodiment, the processor (17) may control the power supply to the source unit (20) or the cartridge heater based on whether the cartridge is usable. For example, the processor (17) may determine that the cartridge is unusable if, based on data stored in memory, the current number of puffs is determined to be greater than or equal to the maximum number of puffs set for the cartridge. Alternatively, the processor (17) may determine that the cartridge is unusable if the total time the cartridge heater is heated is greater than or equal to a preset maximum time, or if the total amount of power supplied to the cartridge heater is greater than or equal to a preset maximum amount of power. In this case, the processor (17) may stop the power supply to the source unit (20) or the cartridge heater, or control the supply so that power is not supplied to the source unit (20) or the cartridge heater.

[0088] According to one embodiment, the processor (17) can control the power supply to the source unit (20) or the cartridge heater based on the user's puff. For example, the processor (17) can determine whether a puff has occurred and / or the intensity of the puff using a puff sensor. The processor (17) can cut off the power supply to the source unit (20) or the cartridge heater when the number of puffs reaches a preset maximum number of puffs or / or when no puff is detected for a preset time or longer. The processor (17) may also control the power supply to the source unit (20) or the cartridge heater when a puff is detected.

[0089] According to one embodiment, the processor (17) can control the power supply to the source unit (20) or the cartridge heater based on whether the aerosol generating item (or cartridge) is genuine and / or of a type. For example, the processor (17) can detect whether the aerosol generating item is genuine and / or of a type using a cigarette identification sensor. For example, if the processor (17) detects that the aerosol generating item (or cartridge) is counterfeit, the power supply to the source unit (20) or the cartridge heater can be cut off. If the processor (17) detects that the aerosol generating item (or cartridge) is genuine, the power supply to the source unit (20) or the cartridge heater can be controlled (e.g., initiated). For another example, the processor (17) can control the power supply to the source unit (20) or the cartridge heater differently depending on the type of the aerosol generating item (or cartridge). More specifically, the processor (17) can control the amplification rate of the source unit (20) or the temperature and / or power of the cartridge heater based on a first temperature profile (or a first power profile) when it is detected that the aerosol generating item (or cartridge) is the first aerosol generating item (or a first cartridge), and control the amplification rate of the source unit (20) or the temperature and / or power of the cartridge heater based on a second temperature profile (or a second power profile) when it is detected that the aerosol generating item (or a second cartridge) is the second aerosol generating item (or a second cartridge).

[0090] According to one embodiment, the processor (17) may control the output unit based on the result detected by the sensor unit. For example, the processor (17) may control the output unit to provide visual, tactile, and / or auditory information that the aerosol generating device (1) will soon be terminated when the number of puffs counted using the puff sensor reaches a preset number. For example, the processor (17) may also control the output unit to provide visual, tactile, and / or auditory information regarding the temperature of the insertion space, the aerosol generating article, or the cartridge heater.

[0091] According to one embodiment, the processor (17) may store and update a history of the event that occurred in memory based on the occurrence of a predetermined event. For example, the event may include operations performed by the aerosol generating device (1), such as detection of insertion of an aerosol generating item, initiation of heating of the aerosol generating item, puff detection, puff termination, overheating detection, detection of overvoltage application to a cartridge heater, termination of heating of the aerosol generating item, power on / off of the aerosol generating device (1), initiation of charging of the power source (13), detection of overcharging of the power source (13), termination of charging of the power source (13), etc. For example, the history of the event may include the time and date when the event occurred, log data corresponding to the event, etc. For example, if the predetermined event is detection of insertion of an aerosol generating item, the log data corresponding to the event may include data regarding the sensing value of the insertion detection sensor, etc. For example, if a predetermined event is the detection of overheating of the cartridge heater, the log data corresponding to the event may include data regarding the temperature of the cartridge heater, the voltage applied to the cartridge heater, the current flowing through the cartridge heater, etc.

[0092] According to one embodiment, the processor (17) can control the communication unit to form a communication link with an external device, such as a user's mobile terminal.

[0093] According to one embodiment, when the processor (17) receives authentication data from an external device via a communication link, it may release the restriction on the use of at least one function (e.g., heating function) of the aerosol generating device (1). For example, the authentication data may include the user's birthday, a unique number representing the user, whether the user's authentication is complete, etc.

[0094] According to one embodiment, the processor (17) can transmit data regarding the status of the aerosol generating device (1) (e.g., remaining capacity of power (13), operating mode, etc.) to an external device via a communication link. The transmitted data can be output through a display of the external device, etc.

[0095] According to one embodiment, when a processor (17) receives a request to search for the location of an aerosol generating device (1) from an external device via a communication link, the processor (17) may control an output unit to perform an operation corresponding to the location search. For example, the processor (17) may control a haptic unit to generate vibrations or control a display to output an object corresponding to the location search and the end of the search.

[0096] According to one embodiment, the processor (17) can perform a firmware update when firmware data is received from an external device through a communication link.

[0097] According to one embodiment, the processor (17) can transmit data regarding the sensing value of at least one sensor unit to an external server (not shown) via a communication link, and receive and store a learning model generated by learning the sensing value through machine learning, such as deep learning, from the server. The processor (17) can use the learning model received from the server to perform operations such as determining the user's inhalation pattern and generating a temperature profile.

[0098] Although not illustrated in FIG. 1, the aerosol generating device (1) may further include a power protection circuit. The power protection circuit includes at least one switching element and can cut off the circuit to the power source (13) in response to overcharging and / or overdischarging of the power source (13).

[0099] The aerosol generating article mentioned in the present disclosure may include at least one aerosol generating rod (e.g., a medium part) and at least one filter rod. The spinning part (30) may be positioned to correspond to 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 include various other materials. For example, the additive may include flavoring agents and / or organic acids, and may include various other materials. 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 whole tobacco, granules, or powder. According to one embodiment, the additive of the aerosol generating rod may comprise a basic material. Based on the basic material, the nicotine in the tobacco material included in the aerosol generating rod may have a basic 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. According to one embodiment, the aerosol generating rod comprises two or more aerosol generating rods, and said two or more aerosol generating rods may each comprise a tobacco material and / or a non-tobacco material.Meanwhile, although not illustrated, at least one aerosol generating rod and at least one filter rod may each and / or integrally be wrapped by at least one wrapper. In the present disclosure, the aerosol generating article may be referred to as a stick.

[0100] The cartridge mentioned in the present disclosure may contain an aerosol generating material having any one of the states, such as 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 containing a volatile tobacco flavor component, or a liquid containing a non-tobacco material. Meanwhile, the cartridge may include a storage portion containing the aerosol generating material and / or a liquid delivery means impregnated (containing) the aerosol generating material. For example, the liquid delivery means may include a wick such as a cotton fiber, a ceramic fiber, a glass fiber, or a porous ceramic. A cartridge heater may be included in the cartridge in a coil-shaped structure that surrounds (or winds) the liquid delivery means or in a structure that contacts one side of the liquid delivery means. Alternatively, the cartridge heater may be included in an aerosol generating device (1) that is detachable from the cartridge.

[0101] FIG. 2 is a perspective view of an aerosol generating device according to one embodiment.

[0102] Referring to FIG. 2, an aerosol generating device (100) according to one embodiment (e.g., the aerosol generating device (1) of FIG. 1) may include a housing (110) capable of receiving an aerosol generating article (S) and a radiating part (200) (e.g., the radiating part (30) of FIG. 1) for heating the aerosol generating article (S). The components of the aerosol generating device (100) are not limited to the components shown in FIG. 2, and depending on the embodiment, other components may be added, or at least one of the shown components (e.g., a cover (111)) may be omitted.

[0103] The housing (110) may include a receiving space (110a) (or 'insertion space') in which an aerosol generating article (S) can be received, and may form the overall appearance of the aerosol generating device (100). Components of the aerosol generating device (100) may be placed in the internal space of the housing (110). For example, a radiation unit (200), a battery, a processor (e.g., the control unit (10) of FIG. 1) and / or a source unit (e.g., the source unit (20) of FIG. 1) may be placed in the internal space of the housing (110), but the components of the aerosol generating device (100) placed in the internal space of the housing (110) are not limited thereto.

[0104] The radiating unit (200) (or 'antenna') can heat the aerosol-generating article (S) by radiating electromagnetic waves toward the aerosol-generating article (S) contained in the receiving space (110a). For example, the radiating unit (200) can radiate electromagnetic waves in a direction toward the receiving space (110a) as an RF (Radio Frequency) signal is supplied from the source unit. At this time, the electromagnetic waves may be microwaves having a frequency band of about 300 MHz to 300 GHz, but are not limited thereto.

[0105] As electromagnetic waves are radiated to the aerosol generating article (S) by the radiating unit (200), the charge or ion of the dielectric (e.g., glycerin) contained in the aerosol generating article (S) may vibrate or rotate, and the aerosol generating article (S) may be heated as the dielectric heat is generated by the frictional heat produced during the process of the charge or ion vibrating or rotating. That is, the aerosol generating device (100) according to one embodiment may be a dielectric heating device that heats the aerosol generating article (S) by a dielectric heating method through the radiating unit (200).

[0106] As the aerosol generating item (S) is heated, the generated steam can be mixed with external air introduced into the receiving space (110a), and as a result, an aerosol can be generated inside the receiving space (110a). At this time, as the user contacts the aerosol generating item (S) with their mouth and performs an inhalation action, the aerosol generated in the receiving space (110a) can be supplied to the user.

[0107] According to one embodiment, the aerosol generating device (100) is movably disposed in a housing (110) and may further include a cover (111) for opening or closing a receiving space (110a). In one example, the cover (111) is disposed to cover the receiving space (110a) at a first position (or 'closed position') to close the receiving space (110a), thereby preventing the receiving space (110a) from being exposed to the outside. By preventing the receiving space (110a) from being exposed to the outside at the first position, the cover (111) can block external foreign matter from entering the receiving space (110a). In another example, the cover (111) can be moved from the first position to a second position (or 'open position') to open the receiving space (110a), thereby allowing the receiving space (110a) to be exposed to the outside. When the cover (111) is placed in the second position, the receiving space (110a) can be exposed to the outside, so the user can insert an aerosol-generating article (S) into the receiving space (110a).

[0108] According to one embodiment, a guide groove (not shown) may be formed in a region of the housing (110) (e.g., a region facing the z-direction), and the cover (111) may move in a sliding manner between a first position and a second position along the guide groove, but the method of movement of the cover (111) is not limited thereto. Additionally, the cover (111) that has moved from the first position to the second position may move back to the first position by means of elastic force even without separate operation by the user, but is not limited thereto.

[0109] Below, with reference to FIGS. 3 and FIGS. 4, we will examine in detail the components placed inside the housing (110) of the aerosol generating device (100).

[0110] FIG. 3 is a cross-sectional view of an aerosol generating device according to one embodiment, and FIG. 4 is a cross-sectional view showing a state in which a metal is inserted into the receiving space of the aerosol generating device of FIG. 3.At this time, the aerosol generating device (100) shown in FIG. 3 and / or FIG. 4 may represent a cross-section of the aerosol generating device (100) of FIG. 2 cut along the yz plane, and redundant descriptions below will be omitted.

[0111] Referring to FIGS. 3 and 4, an aerosol generating device (100) according to one embodiment may include a housing (110) (e.g., housing (110) of FIG. 2), a source unit (120) (e.g., source unit (20) of FIG. 1), a radiating unit (200) (e.g., radiating unit (30) of FIG. 1), a sensor (500), a battery (600) (e.g., power supply (13) of FIG. 1), and a processor (610) (e.g., control unit (10) of FIG. 1). The components of the aerosol generating device (100) are not limited thereto, and depending on the embodiment, at least one component may be omitted or other components (e.g., at least one insulating layer (210, 220), cover member (300)) may be added.

[0112] The housing (110) may include a receiving space (110a) for receiving an aerosol generating article (S), and an internal space may be formed inside the housing (110) in which components of an aerosol generating device (100) may be placed. At least a portion of the aerosol generating article (S) may be received in the receiving space (110a) after being inserted into the interior of the housing (110) through an insertion opening (110h) of the receiving space (110a).

[0113] According to one embodiment, the housing (110) may further include a cover (111) that is movably disposed in one area of ​​the housing (110) (e.g., an area in the z-direction) and can open or close the receiving space (110a). The cover (111) may be substantially the same or similar as the cover (111) of FIG. 2, and redundant descriptions below will be omitted.

[0114] The source unit (120) may include a circuit that is positioned inside the housing (110) and can generate an RF signal as power is supplied. The source unit (120) can generate an RF signal as power is supplied and can amplify the generated RF signal. For example, the source unit (120) can amplify the signal level (e.g., amplitude) and / or power of the generated RF signal. At this time, the RF signal generated by the source unit (120) and with amplified signal level and / or power can be transmitted to the radiating unit (200).

[0115] The radiating unit (200) is electrically or operatively connected to the source unit (120) and can radiate electromagnetic waves toward the receiving space (110a) in response to an RF signal supplied from the source unit (120). For example, the radiating unit (200) may be positioned inside the housing (110) to surround the outer surface of the receiving space (110a) and can radiate microwaves toward an aerosol generating article (S) contained in the receiving space (110a).

[0116] When electromagnetic waves are radiated from the radiating unit (200) in a direction toward the aerosol generating article (S), the charges or ions of the dielectric (e.g., glycerin) contained in the aerosol generating article (S) may vibrate or rotate, thereby generating frictional heat from the dielectric. The aerosol generating article (S) may be heated by the frictional heat generated from the dielectric, and as a result, an aerosol may be generated from the aerosol generating article (S). For example, as the aerosol generating article (S) is heated, the generated steam may be mixed with external air flowing into the receiving space (110a) through the space (gap) or airflow passage (not shown) between the receiving space (110a) and the aerosol generating article (S), thereby generating an aerosol.

[0117] According to one embodiment, the aerosol generating device (100) may further include at least one insulating layer (210, 220), a cover member (300) and / or a shielding member (400).

[0118] At least one insulating layer (210, 220) may include a first insulating layer (210) for protecting the outer surface of the radiating part (200) and a second insulating layer (220) for protecting the inner surface of the radiating part (200).

[0119] The first insulating layer (210) is positioned to surround the outer surface of the radiating part (200) so as to fix the position of the radiating part (200) and protect the outer surface of the radiating part (200). For example, the first insulating layer (210) may be adhered to the outer surface of the radiating part (200) to come into direct contact with the outer surface of the radiating part (200), but is not limited thereto.

[0120] The second insulating layer (220) is positioned to surround the inner surface of the radiating part (200) and, together with the first insulating layer (210), can protect the inner surface of the radiating part (200) while fixing the position of the radiating part (200). For example, the second insulating layer (220) may be adhered to the inner surface of the radiating part (200) to come into direct contact with the inner surface of the radiating part (200), but is not limited thereto.

[0121] That is, as the first insulating layer (210) is arranged to surround the outer surface of the radiating part (200) and the second insulating layer (220) is arranged to surround the inner surface of the radiating part (200), the second insulating layer (220), the radiating part (200), and the first insulating layer (210) can be arranged in sequence along the radial direction of the receiving space (110a). Through the above-described arrangement structure, the first insulating layer (210) and the second insulating layer (220) can fix the radiating part (200) while simultaneously protecting the radiating part (200) from external impact or the ingress of external foreign substances.

[0122] Additionally, the first insulating layer (210) and the second insulating layer (220) may be formed of an insulating material (e.g., polyimide (PI)) and arranged to surround the outer and inner surfaces of the radiating part (200) to prevent electrical short circuits of the radiating part (200).

[0123] The cover member (300) is disposed inside the housing (110) and can support or fix the radiating part (200), the first insulating layer (210), and the second insulating layer (220), and may include a side cover (310), an upper cover (320), and a lower cover (330).

[0124] The side cover (310) may be attached to the outer surface of the first insulating layer (210) and may support or protect the outer surface of the first insulating layer (210). For example, the side cover (310) may be positioned to completely surround the outer surface of the first insulating layer (210) to support or protect the outer surface of the first insulating layer (210), but is not limited thereto.

[0125] The top cover (320) may be coupled to one end (e.g., one end facing the z-direction) of the radiating portion (200), the first insulating layer (210), and the second insulating layer (220) to support or protect the radiating portion (200), the first insulating layer (210), and the second insulating layer (220). The top cover (320) may include an insertion hole (not shown) penetrating the top cover (320), and an aerosol generating article (S) may pass through the insertion hole and be inserted into the interior of the receiving space (110a).

[0126] The bottom cover (330) is coupled to the other end (e.g., the end facing the -z direction) located opposite to one end of the radiating part (200), the first insulating layer (210), and the second insulating layer (220), and can support or protect the other end of the radiating part (200), the first insulating layer (210), and the second insulating layer (220).

[0127] The side cover (310), top cover (320), and bottom cover (330) can be combined with each other and arranged to surround the outer surface of the radiating part (200), the first insulating layer (210), and the second insulating layer (220), thereby fixing the position of the radiating part (200), the first insulating layer (210), and the second insulating layer (220) inside the housing (110).

[0128] In the course of using the aerosol generating device (100), if the aerosol generating device (100) is tilted or the position of the radiating part (200) is not fixed, a situation may occur in which electromagnetic waves are not radiated evenly within the receiving space (110a), and the dielectric heating efficiency is reduced. The aerosol generating device (100) according to one embodiment can prevent the position of the radiating part (200) from moving during operation by supporting the radiating part (200) through the above-described at least one insulating layer (210, 220) and / or cover member (300).

[0129] The shielding member (400) is positioned to surround the outer surface of the first insulating layer (210) inside the housing (110) to prevent electromagnetic waves from leaking out of the housing (110). For example, the shielding member (400) may be in the shape of a hollow cylinder positioned to surround the outer surface of a cover member (300) coupled to the outer surface of the first insulating layer (210), and may shield electromagnetic waves radiated from the radiating part (200) to the outside of the housing (110).

[0130] When electromagnetic waves radiated from the radiating part (200) leak out of the housing (110), interference between the aerosol generating device (100) and an external electronic device may occur. In one embodiment, the aerosol generating device (100) can prevent interference with an external electronic device by blocking the leakage of electromagnetic waves to the outside of the aerosol generating device (100) through a shielding member (400).

[0131] The sensor (500) is located inside the housing (110) and can detect sound generated inside the receiving space (110a). For example, the sensor (500) may include a sound detection sensor capable of detecting the waveform of sound generated inside the receiving space (110a), but the type of sensor (500) is not limited thereto. At this time, data regarding the sound detected through the sensor (500) (e.g., data regarding the waveform of the sound) can be transmitted to a processor (610) operatively connected to the sensor (500).

[0132] According to one embodiment, the sensor (500) may be positioned at a predetermined distance from the radiating part (200). For example, the sensor (500) may be positioned in an area (or 'upper area') adjacent to the insertion opening (110h) of the receiving space (110a) of the housing (110) and spaced at a predetermined distance from the radiating part (200).

[0133] When the sensor (500) is positioned adjacent to the radiating unit (200), noise may be generated in the detection result of the sensor (500) due to electromagnetic waves radiated from the radiating unit (200). An aerosol generating device (100) according to one embodiment can prevent the degradation of the detection performance of the sensor (500) due to electromagnetic waves through a structure in which the sensor (500) is positioned at a predetermined distance from the radiating unit (200).

[0134] The battery (600) can supply power required for the operation of the aerosol generating device (100). For example, the battery (600) can supply power required to generate an RF signal in the source unit (120) and to amplify the generated RF signal. In another example, the battery (600) may supply power required for the operation of the processor (610). The battery (600) may be substantially the same or similar as the power source (13) of FIG. 1, and redundant descriptions below will be omitted.

[0135] The processor (610) can control the overall operation of the aerosol generating device (100). The processor (610) may be substantially the same or similar as the control unit (10) of FIG. 1, and redundant descriptions below will be omitted.

[0136] In one example, the processor (610) is operatively connected to the source unit (120) and / or the battery (600) to control the power supplied from the battery (600) to the source unit (120), or to control the characteristics, signal level, and / or power of the RF signal generated in the source unit (120).

[0137] In another example, the processor (610) is operatively connected to the sensor (500) to detect whether a metal (M) has been inserted into the receiving space (110a) based on a sound generated inside the receiving space (110a) detected through the sensor (500), and can control the power supplied from the battery (600) to the source unit (120) based on the detection result.

[0138] As illustrated in FIG. 4, when electromagnetic waves are emitted from the radiating unit (200) while a metal (M) other than an aerosol generating article (S) is inserted into the receiving space (110a), a discharge phenomenon or spark of the metal (M) may occur inside the receiving space (110a) as the metal (M) reflects the electromagnetic waves instead of absorbing them. The discharge phenomenon or spark of the metal (M) may cause an excessive rise in the internal temperature of the receiving space (110a) or cause a malfunction of the components of the aerosol generating device (100) (e.g., battery (600) or circuit), thereby causing safety issues and / or a malfunction or failure of the aerosol generating device (100).

[0139] An aerosol generating device (100) according to one embodiment detects whether a metal (M) is inserted into a receiving space (110a) based on a sound detected by a sensor (500), and if a metal (M) is inserted, it blocks the power supply to the source part (120), thereby preventing the occurrence of a discharge phenomenon or a spark caused by the metal (M) unintentionally inserted into the receiving space (110a).

[0140] Below, with reference to FIG. 5, we will specifically examine the operation of controlling the power supplied to the source unit (120) based on the detection result of the sensor (500) of the processor (610).

[0141] FIG. 5 is a flowchart illustrating a control operation according to whether or not a metal is inserted in an aerosol generating device according to one embodiment. In the following description of the control operation according to whether the metal of FIG. 5 is inserted, reference will be made to the components of the aerosol generating device (100) of FIG. 3 and FIG. 4.

[0142] Referring to FIG. 5, in operation 501, an aerosol generating device (100) (e.g., the aerosol generating device (100) of FIG. 3 or FIG. 4) can detect sound generated in a receiving space (110a) (e.g., the receiving space (110a) of FIG. 3 or FIG. 4) through a sensor (500) (e.g., the sensor (500) of FIG. 3 or FIG. 4). For example, the sensor (500) can detect the waveform of sound generated in the receiving space (110a), and data regarding the detected waveform of sound can be transmitted to a processor (610) (e.g., the processor (610) of FIG. 3 or FIG. 4).

[0143] In operation 502, the processor (610) of the aerosol generating device (100) can detect whether a metal (M) has been inserted into the receiving space (110a) based on the sound detected in operation 501 and data regarding the waveform of the sound stored in advance. The processor (610) can prevent unnecessary power consumption caused by the operation of the processor (610) by detecting whether a metal (M) has been inserted into the receiving space (110a) through operation 502 only when a sound is detected in operation 501, but is not limited thereto.

[0144] The pre-stored data regarding sound waveforms may include, for example, at least one of data regarding sound waveforms generated during discharge of the metal (M) according to the type of metal (M), data regarding sound waveforms generated during discharge of the metal (M) according to the size of the metal (M), and data regarding sound waveforms generated during discharge of the metal (M) according to the distance between the metal (M) and the sensor (500), but the types of pre-stored data regarding sound waveforms are not limited thereto.

[0145] Depending on the type, size, and / or distance from the sensor (500) of the metal (M) inserted into the receiving space (110a), the sound produced when the metal (M) is discharged may vary. An aerosol generating device (100) according to one embodiment can learn (e.g., machine learning) the sound generated when a metal (M) is discharged according to the type, size, and / or distance from the sensor (500) of the metal (M) inserted in the receiving space (110a), and can generate data regarding the waveform of the sound (or 'discharge sound') generated when the metal (M) is discharged through modeling. For example, the aerosol generating device (100) can generate data regarding the waveform of the sound generated when the metal (M) is discharged by AI modeling the sound generated when the metal (M) is discharged of various types and sizes. At this time, the generated data regarding the waveform of the sound generated when the metal (M) is discharged may be stored in the form of a lookup table in a processor (610) and / or a separate memory (not shown) operatively connected to the processor (610), but is not limited thereto.

[0146] According to one embodiment, the processor (610) compares data regarding the waveform of sound detected in the 501 operation and data regarding the waveform of sound generated during the discharge of the metal (M) stored in advance while electromagnetic waves are being radiated from the radiating unit (200), and can detect whether the metal (M) is inserted in the receiving space (110a) based on the degree of alignment between the data regarding the waveform of sound detected in the 501 operation and the data regarding the waveform of sound generated during the discharge of the metal (M) stored in advance.

[0147] In operation 503, the processor (610) of the aerosol generating device (100) can determine whether the metal (M) is inserted into the receiving space (110a) based on the detection result performed in operation 502.

[0148] In operation 503, if it is determined that a metal (M) has been inserted into the receiving space (110a), in operation 504, the processor (610) of the aerosol generating device (100) can control the battery (600) to cut off the power supply to the source unit (120). For example, if the processor (610) determines that a metal (M) has been inserted into the receiving space (110a), it can control the battery (600) to cut off the power supply to the source unit (120), thereby preventing the discharge of the metal (M) or the occurrence of a spark caused by electromagnetic waves.

[0149] Conversely, if it is determined in operation 503 that the metal (M) is not inserted into the receiving space (110a), the processor (610) of the aerosol generating device (100) can repeat operations 501 through 503 to continuously check whether the metal (M) is inserted into the receiving space (110a).

[0150] An aerosol generating device (100) according to one embodiment can prevent safety issues or technical problems such as malfunction or failure of the aerosol generating device (100) that may occur when an unintended metal (M) is inserted into the receiving space (110a) through the above-described 501 to 504 operations.

[0151] Below, with reference to FIGS. 6 and FIGS. 7, we will specifically examine the operation of detecting whether a metal (M) has been inserted into the receiving space (110a) of the aerosol generating device (100) (e.g., operation 502 of FIG. 5).

[0152] FIG. 6 is a flowchart for explaining the operation of detecting whether metal is inserted in an aerosol generating device according to another embodiment, and FIG. 7 is a graph showing together data regarding the waveform of sound detected by the sensor of the aerosol generating device and the waveform of sound stored in advance. In the following description of the operation for detecting whether a metal of FIG. 6 is inserted, reference will be made to the components of the aerosol generating device (100) of FIG. 3 and FIG. 4.

[0153] Referring to FIG. 6, in operation 601, the processor (610) (e.g., the processor (610) of FIG. 3 or FIG. 4) of the aerosol generating device (100) (e.g., the aerosol generating device (100) of FIG. 3 or FIG. 4) can calculate the degree of match between the waveform of sound detected through the sensor (500) (e.g., the sensor (500) of FIG. 3 or FIG. 4) in operation 501 and the data regarding the waveform of sound stored in advance. In the present disclosure, 'degree of match' may refer to the numerical degree of how much the data regarding the waveform of sound detected in operation 501 and the data regarding the waveform of sound stored in advance match, and the higher the degree of match, the more it can be determined that the waveform of sound detected in operation 501 and the data regarding the waveform of sound stored in advance match.

[0154] Referring to FIG. 7, the processor (610) can calculate the degree of match by comparing the waveform (701) of sound generated in the receiving space (110a) detected through the sensor (500) with data (702) regarding the waveform of sound generated during the discharge of the metal (M) stored in advance. For example, the processor (610) can calculate the degree of match based on the change in amplitude over time of the waveform (701) of sound generated in the receiving space (110a) detected through the sensor (500) and the data (702) regarding the waveform of sound generated during the discharge of the metal (M) stored in advance, but is not limited thereto.

[0155] For example, the processor (610) can compare the waveform of a sound detected through the sensor (500) in operation 501 with data regarding a plurality of sound waveforms stored in advance, and calculate the degree of match with the data among the data regarding the plurality of sound waveforms that has the highest degree of match with the waveform of the sound detected through the sensor (500).

[0156] In operation 602, the processor (610) of the aerosol generating device (100) can determine whether the degree of match calculated through operation 601 is greater than or equal to a specified value. In the present disclosure, the 'specified value' may refer to a value that serves as a standard for determining whether the waveform (701) of sound generated in the receiving space (110a) detected by the sensor (500) matches the waveform of sound generated during the discharge of a metal (M) that is stored in advance.

[0157] If the degree of match calculated through the 601 operation in the 602 operation is determined to be greater than or equal to a specified value, the processor (610) of the aerosol generating device (100) may determine that a metal (M) has been inserted into the receiving space (110a). For example, if the degree of match calculated through the 601 operation is about 90 to 95% or more, the processor (610) may determine that the waveform of the sound generated in the receiving space (110a) and the waveform of the sound generated during the discharge of the pre-stored metal (M) substantially match but differ partially due to noise, and may determine that a metal (M) has been inserted into the receiving space (110a).

[0158] At this time, when the processor (610) determines that the metal (M) is inserted into the receiving space (110a), it can prevent the discharge or sparking of the metal (M) caused by electromagnetic waves by cutting off the power supply to the source part (120) through operations 503 and 504 of FIG. 5.

[0159] Conversely, if the degree of match calculated through the 601 operation in the 602 operation is determined to be smaller than the specified value, the sound detected by the sensor (500) is determined to be noise such as sound generated outside the aerosol generating device (100), and the 601 operation and 602 operation can be performed again.

[0160] That is, the aerosol generating device (100) according to one embodiment can precisely detect whether the sound detected by the sensor (500) through the above-described 601 to 603 operations is a sound generated by the discharge of the metal (M) or a sound generated by noise from outside the aerosol generating device (100). As a result, when the metal (M) is inserted into the receiving space (110a), the aerosol generating device (100) according to one embodiment can prevent the occurrence of safety issues for the user due to the discharge phenomenon of the metal (M) caused by electromagnetic waves being radiated from the radiating part (200), and can prevent malfunction or breakdown of the aerosol generating device (100).

[0161] An aerosol generating device according to one embodiment comprises: a housing including a receiving space for accommodating at least a portion of an aerosol generating article; a battery; a source unit located inside the housing for generating electromagnetic waves using power supplied from the battery; a radiating unit located inside the housing for heating an aerosol generating article by radiating the electromagnetic waves generated from the source unit in a direction toward the aerosol generating article accommodating the receiving space; a sensor for detecting sound generated in the receiving space; and a processor operatively connected to the battery, the source unit, and the sensor, wherein the processor can detect whether a metal has been inserted into the receiving space based on the sound detected through the sensor.

[0162] According to one embodiment, the source unit generates an RF signal as power is supplied from a battery and amplifies the generated RF signal, and the radiating unit can radiate electromagnetic waves when the RF signal is transmitted from the source unit.

[0163] At this time, the radiating part can heat the aerosol-generating article through frictional heat generated in the dielectric by radiating the electromagnetic waves to vibrate the dielectric contained in the aerosol-generating article.

[0164] According to one embodiment, the processor can control the battery so that the power supply to the source part is cut off when it is determined that metal is inserted into the receiving space.

[0165] According to one embodiment, the sensor can detect a waveform of sound generated in the receiving space.

[0166] According to one embodiment, the processor can detect whether metal has been inserted into the receiving space based on the waveform of the sound detected through the sensor and data regarding the sound waveform stored in advance.

[0167] For example, the data regarding the sound waveform may include at least one of the following: data regarding the sound waveform generated during metal discharge according to the type of metal, data regarding the sound waveform generated during metal discharge according to the size of the metal, and data regarding the sound waveform generated during metal discharge according to the distance between the sensor and the metal.

[0168] In one example, the processor calculates the degree of match between the sound waveform detected through the sensor and the data regarding the sound waveform stored in advance, and if the calculated degree of match is greater than or equal to a specified value, it can determine that metal has been inserted into the receiving space.

[0169] According to one embodiment, the sensor may be positioned inside the housing at a predetermined distance from the radiating part.

[0170] For example, the sensor may be placed in an area adjacent to the insertion opening of the receiving space of the housing.

[0171] Some or other embodiments of the present disclosure described above are not exclusive or distinct from one another. Some or other embodiments of the present disclosure described above may be used in combination or combined for their respective configurations or functions.

[0172] For example, this means that configuration A described in a specific embodiment and / or drawing and configuration B described in another embodiment and / or drawing can be combined. That is, even if the combination between configurations is not directly described, it means that combination is possible, except in cases where it is described that combination is impossible.

[0173] The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

Claims

Claim 1 An aerosol generating device comprising: a housing including a receiving space for accommodating at least a portion of an aerosol generating article; a battery; a source unit located inside the housing and for generating electromagnetic waves using power supplied from the battery; a radiating unit located inside the housing and for heating the aerosol generating article by radiating the electromagnetic waves generated from the source unit in a direction toward the aerosol generating article accommodated in the receiving space; a sensor for detecting sound generated in the receiving space; and a processor operatively connected to the battery, the source unit, and the sensor, wherein the processor detects whether a metal has been inserted into the receiving space based on the sound detected through the sensor. Claim 2 An aerosol generating device according to claim 1, wherein the source unit generates an RF signal as power is supplied from a battery and amplifies the generated RF signal, and the radiating unit radiates electromagnetic waves when the RF signal is transmitted from the source unit. Claim 3 An aerosol generating device according to claim 1, wherein the radiating part radiates the electromagnetic waves to vibrate the dielectric contained in the aerosol generating article, thereby heating the aerosol generating article through frictional heat generated in the dielectric. Claim 4 An aerosol generating device according to claim 1, wherein the processor controls the battery to cut off the power supply to the source portion when it is determined that metal has been inserted into the receiving space. Claim 5 In claim 1, the sensor is an aerosol generating device that detects a waveform of sound generated in the receiving space. Claim 6 In claim 5, the aerosol generating device, wherein the processor detects whether metal has been inserted into the receiving space based on the waveform of sound detected through the sensor and data regarding the waveform of sound stored in advance. Claim 7 An aerosol generating device according to claim 6, wherein the data regarding the sound waveform includes at least one of the following: data regarding the sound waveform generated during metal discharge according to the type of metal, data regarding the sound waveform generated during metal discharge according to the size of the metal, and data regarding the sound waveform generated during metal discharge according to the distance between the sensor and the metal. Claim 8 An aerosol generating device according to claim 6, wherein the processor calculates the degree of alignment between the sound waveform detected through the sensor and the data regarding the sound waveform stored in advance, and determines that metal has been inserted into the receiving space if the calculated degree of alignment is greater than or equal to a specified value. Claim 9 An aerosol generating device according to claim 1, wherein the sensor is positioned within the housing at a predetermined distance from the radiating part. Claim 10 In claim 9, the aerosol generating device wherein the sensor is disposed in an area adjacent to the insertion opening of the receiving space of the housing.

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