Aerosol-generating device

Abstract

Disclosed is an aerosol-generating device. The aerosol-generating device according to the present disclosure comprises: a body providing an insertion space for receiving an aerosol-generating article; an antenna disposed adjacent to the insertion space and radiating, into the insertion space, microwaves for dielectrically heating the aerosol-generating article; and a control unit for controlling the frequency of the microwaves radiated from the antenna, wherein the antenna can be changed in length and shape, and the control unit can control to change at least one of the length or shape of the antenna and thereby change the frequency of the microwaves radiated from the antenna.

Description

Aerosol generator

[0001] The present disclosure relates to an aerosol generating device.

[0002] An aerosol generator is intended to extract specific components from a medium or substance through an aerosol. The medium may contain substances of various components. The substances contained in the medium may be flavor substances of various components. For example, the substances contained in the medium may include nicotine components, herbal components, and / or coffee components. Recently, much research has been conducted on such aerosol generators.

[0003] An aerosol generator that heats aerosol products using a dielectric heating method heats the aerosol products within the aerosol products by radiating microwaves into the insertion space. For the heating efficiency of the aerosol products to be maximized, microwave resonance must occur within the insertion space. Microwave resonance can vary depending on factors such as the amount of dielectric material contained in the inserted aerosol products. In particular, as inhalation progresses, the resonance conditions may change as the medium or humectant within the aerosol products is depleted.

[0004] When the resonance frequency at which microwave resonance occurs fluctuates, the frequency radiated from the antenna must also be changed to match the resonance frequency. However, conventional aerosol generators are unable to change the frequency radiated from the antenna in response to changes in the fluctuating resonance frequency, resulting in problems such as reduced heating efficiency or device malfunction or failure caused by reflected waves that are not absorbed by the medium or humectant.

[0005] The present disclosure aims to solve the aforementioned problems and other problems.

[0006] Another objective may be to provide an aerosol generating device that controls at least one of the length and shape of the antenna to be changed.

[0007] Another objective may be to provide an aerosol generating device having a plurality of tracks on an antenna and track switches that electrically connect or disconnect the tracks between each track.

[0008] Another objective may be to provide an aerosol generating device having a driving unit connected to one end of an antenna to extend or contract the antenna in one direction.

[0009] Another objective may be to provide an aerosol generator that changes the length or shape of the output RF signal and antenna based on the power of the reflected wave.

[0010] According to one aspect of the present disclosure for achieving the above-described purpose, an aerosol generating device is provided comprising: a body providing an insertion space in which an aerosol product is received; an antenna disposed adjacent to the insertion space and radiating microwaves into the insertion space to dielectric heat the aerosol product; and a control unit for controlling the frequency of microwaves radiated from the antenna, wherein the antenna is changeable in length and shape, and the control unit controls at least one of the length and shape of the antenna to change the frequency radiated from the antenna.

[0011] According to at least one embodiment of the present disclosure, the frequency radiated from the antenna can be easily changed by controlling at least one of the length and shape of the antenna to be changed.

[0012] According to at least one embodiment of the present disclosure, the antenna is provided with a plurality of tracks and a track switch that electrically connects or disconnects the tracks between each track, so that the length and shape of the antenna can be easily changed.

[0013] According to at least one embodiment of the present disclosure, a driving unit connected to one end of the antenna is provided to extend or shorten the antenna in one direction, thereby allowing the length and shape of the antenna to be easily changed.

[0014] According to at least one embodiment of the present disclosure, by changing the length or shape of the output RF signal and the antenna based on the power of the reflected wave, the frequency of the microwave radiated from the antenna can be easily changed to match the fluctuation of the resonant frequency, and the heating efficiency can be reduced or the device can be prevented from failing due to the reflected wave.

[0015] Further scopes of the applicability of the present disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present disclosure are clearly understood by those skilled in the art, specific embodiments, such as the detailed description and preferred embodiments of the present disclosure, should be understood as being given merely as examples.

[0016] FIG. 1 is a block diagram of an aerosol generating device according to one embodiment of the present disclosure.

[0017] FIG. 2 illustrates an aerosol generating device according to one embodiment of the present disclosure.

[0018] FIG. 3 is a drawing illustrating a radiating part according to one embodiment of the present disclosure.

[0019] FIG. 4 is a drawing illustrating the track and switch of an antenna according to one embodiment of the present disclosure.

[0020] FIG. 5 is a drawing showing that the length and shape of an antenna are changed by a switch operation according to one embodiment of the present disclosure.

[0021] FIG. 6 is a drawing illustrating the track and switch of an antenna according to one embodiment of the present disclosure.

[0022] FIG. 7 is a drawing showing that the length and shape of an antenna are changed by a switch operation according to one embodiment of the present disclosure.

[0023] FIG. 8 is a drawing illustrating an antenna and a driving unit according to one embodiment of the present disclosure.

[0024] FIG. 9 is a drawing showing that the length and shape of an antenna are changed by the operation of a driving unit according to one embodiment of the present disclosure.

[0025] FIGS. 10 and FIGS. 11 are flowcharts illustrating frequency change control of microwaves according to one embodiment of the present disclosure.

[0026] 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.

[0027] 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).

[0028] 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.

[0029] 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.

[0030] 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.

[0031] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0032] Embodiments of the present disclosure may be implemented as software comprising one or more instructions stored in a storage medium (e.g., memory) that is readable by a machine (e.g., aerosol generating device (1)). For example, a processor (e.g., processor (170)) 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 be operated 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.

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

[0034] 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.

[0035] In one example, the control unit (10) may include a power connector (110), a charging circuit (120), a power source (130), a first power converter (140), a second power converter (150), a third power converter (160) and / or a processor (170). Additionally, the source unit (20) may include an RF signal generation circuit (210), a drive amplifier (220), a power amplifier (230), a directional coupler (240) and / or a temperature sensing circuit (250). 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.

[0036] The power connector (110) 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 (110) may receive power from an external power source and transmit the received power to a component that requires charging (e.g., a power source (130)). The power connector (110) 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 (110). The power connector (110) may include a USB (Universal Serial Bus) power connector, a DC (Direct Current) power connector, etc. In one example, the power connector (110) 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 (110) may include an interface for wirelessly transmitting and receiving power.

[0037] The charging circuit (120) may refer to a circuit for charging the power source (130). The charging circuit (120) may charge the power source (130) using power delivered from the power connector (110). In one example, the charging circuit (120) may be implemented as a charger IC, which is an integrated circuit (IC) that performs functions for efficiently and safely charging the power source (130). The charging circuit (120) may monitor the charging status of the power source (130) or optimize the charging process by monitoring the voltage, current, and / or temperature of the power source (130). For example, the charging circuit (120) may detect the state of the power source (130) and prevent overcharging or over-discharging by providing an appropriate charging voltage and current.

[0038] The power source (130) can supply power for the operation of the aerosol generating device (1). The power source (130) may include one or more rechargeable batteries. The power source (130) can supply power to the radiating unit (30) so that the radiating unit (30) can radiate electromagnetic waves (e.g., RF signals) into the insertion space to heat the aerosol generating article. 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 (130) can supply power required for the operation of the processor (170), RF signal generating circuit (210), driving amplifier (220), power amplifier (230), temperature sensing circuit (250), etc. In one example, the power source (130) may be a lithium polymer (LiPoly) battery, but is not limited thereto. The power source (130) may be a replaceable type (detachable) battery (hereinafter, 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 be charged via wired and / or wireless connections.

[0039] The aerosol generating device (1) may include a power conversion circuit for converting power supplied from a power source (130) 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.

[0040] In one example, the aerosol generating device (1) may include a first power converter (140), a second power converter (150), and a third power converter (160). The first power converter (140) is an LDO regulator for supplying power (e.g., DC 3.3V) suitable for a processor (170), the second power converter (150) is a buck-boost converter for supplying power (e.g., DC 5V) suitable for a temperature sensing circuit (250), an RF signal generating circuit (210), and a driving amplifier (220), and the third power converter (160) may be a boost converter for supplying power (e.g., DC 12V / 25W) suitable for a power amplifier (230).

[0041] However, the first power converter (140), the second power converter (150), and the third power converter (160) 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 (140), the second power converter (150), and the third power converter (160) may be integrated into a single power converter.

[0042] The processor (170) can control the overall operation of the aerosol generating device (1). For example, the processor (170) can directly or indirectly control the charging and discharging of the power supply (130) using the charging circuit (120). Additionally, the processor (170) 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 (170) can control the overall operation of other components to be described later.

[0043] The processor (170) 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 (170) may be implemented in other forms of hardware.

[0044] The RF signal generation circuit (210) can generate an RF signal based on power delivered from the power supply (130) or the second power converter (150). 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.

[0045] The RF signal generation circuit (210) 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 (210) may receive a control signal (e.g., a DC signal) from the processor (170) and generate an RF signal having a frequency corresponding to the received control signal. The processor (170) 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.

[0046] 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 (170) into an analog control signal. An RF signal generating circuit (210) may receive an analog control signal and generate an RF signal having a frequency corresponding to the received analog control signal.

[0047] The driving amplifier (220) can amplify the RF signal generated by the RF signal generation circuit (210). For example, the driving amplifier (220) can provide an input signal suitable for the next stage component (e.g., power amplifier (230)) by amplifying the signal level (e.g., amplitude) of the RF signal. The driving amplifier (220) can minimize signal distortion by maintaining high linearity. However, since the driving amplifier (220) is an amplifier focused on raising the signal level, it can provide relatively low output power.

[0048] The power amplifier (230) can amplify the power of the RF signal received from the driving amplifier (220). The power amplifier (230) may be an amplifier focused on providing sufficient power to the final output device (e.g., the radiator (30)). For example, the power amplifier (230) 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 (230) may perform the amplification operation using power received through a third power converter (160) that provides higher power and / or voltage than the second power converter (150).

[0049] The driving amplifier (220) and the power amplifier (230) 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 (220) and the power amplifier (230) 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 (220) and the power amplifier (230) may also include an operational amplifier.

[0050] Meanwhile, in FIG. 1, the driving amplifier (220) and the power amplifier (230) are shown as separate amplifiers, but the driving amplifier (220) and the power amplifier (230) can be integrated into a single amplifier. Additionally, the driving amplifier (220) and / or the power amplifier (230) may be configured as a series connection, a parallel connection, and / or a combination thereof of a plurality of amplifiers.

[0051] 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.

[0052] 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 (170) can control the frequency of the RF signal generated by the RF signal generating circuit (210) 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 (210). The processor (170) may use a directional coupler (240) to obtain information about the resonance condition of the insertion space.

[0053] The directional coupler (240) may refer to a passive element having a waveguide structure capable of separating incident waves and reflected waves. The directional coupler (240) can receive an RF signal transmitted from the power amplifier (230) 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 (240) can separate the transmitted RF signal and the reflected electromagnetic wave and transmit them to the processor (170).

[0054] In one example, the aerosol generating device (1) may further include an analog-to-digital converter for converting the analog output of a directional coupler (240) into a digital output. The A / D converter may be built into the processor (170) or may exist as a separate configuration outside the processor (170). By monitoring the output of the directional coupler (240), the processor (170) 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).

[0055] The processor (170) 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 (170) 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 (170) can adjust the frequency of the RF signal generated by the RF signal generation circuit (210) 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.

[0056] 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 (170). 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 (170).

[0057] A temperature sensing circuit (250) 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 (250) may be placed in contact with or adjacent to at least one of the RF signal generation circuit (210), the driving amplifier (220), and the power amplifier (230). 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 (250) may be used to prevent overheating of the source section (20).

[0058] The processor (170) receives the temperature (or a value corresponding to the temperature) measured by the temperature sensing circuit (250) 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 (170) 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.

[0059] The temperature sensing circuit (250) 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 (250) 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.

[0060] 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 (130).

[0061] 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 (170). 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 water immersion of the aerosol generating device (1).

[0062] 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).

[0063] According to one embodiment, a temperature sensor can detect the temperature of a power source (130). The temperature sensor may be positioned adjacent to the power source (130). For example, the temperature sensor may be attached to one side of the power source (130) (e.g., a battery) or / 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 (130) together with the protection circuit module.

[0064] According to one embodiment, the temperature sensor may be placed inside the housing (not shown) of the aerosol generating device (1) to detect the temperature inside the housing (not shown).

[0065] According to one embodiment, the puff sensor can detect the user's puff.

[0066] 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 (170) 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.

[0067] 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 (170) can detect the user's puff based on a signal corresponding to the temperature of the airflow path, etc. output from the temperature sensor.

[0068] 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 (170) may receive the signals and correct the signal corresponding to the internal pressure based on the signal corresponding to the temperature.

[0069] 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 (170) may detect the user's puff based on a signal corresponding to the dielectric constant inside the insertion space, etc., output from the capacitance sensor.

[0070] The puff sensor is not limited to the examples described above and can be implemented as various sensors to detect the user's puff.

[0071] 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.

[0072] 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 (170) 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.

[0073] 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 (170) 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 (170) may detect the insertion and / or removal of an aerosol-generating article based on the characteristics of the current of the inductive sensor.

[0074] 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.

[0075] 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 (170) 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.

[0076] 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 (170) 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 (170) 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.

[0077] 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.

[0078] 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 wavelength based on the irradiated light. The processor (170) may detect whether the aerosol-generating article is genuine and / or of a specific type based on the range of the wavelengths.

[0079] 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 (170) 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.

[0080] 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 (170) 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.

[0081] 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.

[0082] 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.

[0083] 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 (170) may detect the mounting or removal of the cap based on the signal corresponding to the mounting or removal.

[0084] 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.

[0085] 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.

[0086] 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 (130) 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. The display can also be used as an input unit if it includes a touch pad. 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.

[0087] 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.

[0088] 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 (170) 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.

[0089] 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.

[0090] According to one embodiment, the processor (170) 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 (230)). The processor (170) can control the amplification rate of the source unit (20) (e.g., power amplifier (230)) based on the temperature of the insertion space or aerosol generating article detected using a temperature sensor. The processor (170) can control the amplification rate of the source unit (20) (e.g., power amplifier (230)) based on a temperature profile and / or power profile stored in memory.

[0091] Additionally, the processor (170) can control the temperature of the cartridge heater by controlling the supply of power from the power supply (130) to the cartridge heater. The processor (170) 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 (170) 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.

[0092] According to one embodiment, the processor (170) can prevent the insertion space, the aerosol generating article, and / or the cartridge heater from overheating. For example, the processor (170) 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.

[0093] According to one embodiment, the processor (170) can control the power supply to the source unit (20) or the cartridge heater based on the result detected by the sensor unit.

[0094] According to one embodiment, the processor (170) 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 (170) may control the power supply to the source unit (20) or the cartridge heater when it is determined, using an insertion detection sensor, that an aerosol-generating article has been inserted into the insertion space. The processor (170) may cut off the power supply to the source unit (20) or the cartridge heater when it is determined, using an insertion detection sensor, that an aerosol-generating article has been removed from the insertion space. The processor (170) 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.

[0095] According to one embodiment, the processor (170) 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 (170) 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.

[0096] According to one embodiment, the processor (170) 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 (170) 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.

[0097] According to one embodiment, the processor (170) 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 (170) 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.

[0098] According to one embodiment, the processor (170) 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 (170) 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 (170) may cut off the power supply to the source unit (20) or the cartridge heater.

[0099] According to one embodiment, the processor (170) 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 (170) 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 (170) 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 (170) 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.

[0100] According to one embodiment, the processor (170) can control the power supply to the source unit (20) or the cartridge heater based on the user's puff. For example, the processor (170) can determine whether a puff has occurred and / or the intensity of the puff using a puff sensor. The processor (170) 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 (170) may also control the power supply to the source unit (20) or the cartridge heater when a puff is detected.

[0101] According to one embodiment, the processor (170) 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 (170) can detect whether the aerosol generating item is genuine and / or of a type using a cigarette identification sensor. For example, if the processor (170) detects that the aerosol generating item (or cartridge) is counterfeit, the processor (170) can cut off the power supply to the source unit (20) or the cartridge heater. If the processor (170) detects that the aerosol generating item (or cartridge) is genuine, the processor (170) can control (e.g., initiate) the power supply to the source unit (20) or the cartridge heater. For another example, the processor (170) 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 (170) 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 the aerosol generating item (or cartridge) is detected to be a 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 the aerosol generating item (or a second cartridge) is detected to be a second aerosol generating item (or a second cartridge).

[0102] According to one embodiment, the processor (170) may control the output unit based on the result detected by the sensor unit. For example, the processor (170) 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 (170) may 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.

[0103] According to one embodiment, the processor (170) 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 supply (130), detection of overcharging of the power supply (130), termination of charging of the power supply (130), 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.

[0104] According to one embodiment, the processor (170) can control the communication unit to form a communication link with an external device, such as a user's mobile terminal.

[0105] According to one embodiment, when the processor (170) 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.

[0106] According to one embodiment, the processor (170) can transmit data regarding the status of the aerosol generating device (1) (e.g., remaining capacity of the power supply (130), 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.

[0107] According to one embodiment, when a processor (170) receives a request to search for the location of an aerosol generating device (1) from an external device via a communication link, the processor (170) may control an output unit to perform an operation corresponding to the location search. For example, the processor (170) 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.

[0108] According to one embodiment, the processor (170) can perform a firmware update when firmware data is received from an external device through a communication link.

[0109] According to one embodiment, the processor (170) transmits data regarding the sensing value of at least one sensor unit to an external server (not shown) via a communication link, and receives and stores a learning model generated by learning the sensing value through machine learning, such as deep learning, from the server. The processor (170) 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.

[0110] 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 (130) in response to overcharging and / or overdischarging of the power source (130).

[0111] 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.

[0112] 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.

[0113]

[0114] FIG. 2 illustrates an aerosol generating device (1) according to one embodiment of the present disclosure.

[0115] According to one embodiment, the aerosol generating device (1) may include a housing (11), a control unit (10), a source unit (20), a radiation unit (30), and an antenna control unit (40). However, it will be understood by those skilled in the art related to this embodiment that the components included in the aerosol generating device (1) are not limited to those shown in FIG. 2, and that some of the components may be omitted or new configurations may be added. The aerosol generating device (1) shown in FIG. 2 may be referred to as an 'external heating type' aerosol generating device that heats the outside of an aerosol generating article (2). In the following drawings, descriptions that overlap with FIG. 2 will be omitted.

[0116] According to one embodiment, the housing (11) may provide a space that is open upward to allow an aerosol-generating article (2) to be inserted. In the present disclosure, the space that is open upward may be referred to as an insertion space (IS). The insertion space (IS) may be formed by being recessed to a predetermined depth toward the interior of the housing (11) so that at least a portion of the aerosol-generating article (2) can be inserted. The depth of the insertion space (IS) may be greater than the length of the area containing the aerosol-generating material and / or medium in the aerosol-generating article (2). The bottom end of the aerosol-generating article (2) may be inserted into the interior of the housing (11), and the top end of the aerosol-generating article (2) may protrude outside the housing (11). A user may take the top end of the aerosol-generating article (2) exposed to the outside into their mouth and inhale the aerosol.

[0117] According to one embodiment, the radiating part (30) can heat the aerosol generating article (2). Referring to FIG. 2, the radiating part (30) may be an external heating type structure.

[0118] According to one embodiment, the radiating portion (30) may extend upwardly around an insertion space (IS) into which an aerosol generating article (2) is inserted. For example, the radiating portion (30) may be positioned to surround at least a portion of the insertion space (IS). For example, the radiating portion (30) may include a tube shape (e.g., a cylindrical shape) containing a hollow inside. The radiating portion (30) may include a shape containing a hollow inside and surrounding said hollow. The radiating portion (30) may be positioned to surround at least a portion of the insertion space (IS). The radiating portion (30) may heat the outside of the aerosol generating article (2) inserted into said hollow.

[0119] According to one embodiment, the radiating member (30) may include a dielectric heating type heater. The aerosol generating device (1) may include a tube-shaped antenna surrounding the insertion space (IS). Meanwhile, an insulating material may be placed on the outside of the radiating member (30). Through this, heat radiated outward from the radiating member (30) and applied to the outside of the housing (11) can be reduced.

[0120] According to one embodiment, the radiating member (30) may be a multi-heater, and the first antenna and the second antenna may be arranged side by side along the longitudinal direction to each surround at least a portion of the insertion space (IS). The first antenna and the second antenna may operate as dielectric heating type heaters and may radiate electromagnetic waves sequentially or simultaneously.

[0121] Unlike as shown in FIG. 2, the antenna of the radiating part (30) may be wound around a rod-shaped or needle-shaped structure and inserted into the aerosol-generating article (2) through the lower part of the aerosol-generating article (2). In this case, electromagnetic waves radiated from the antenna may propagate from the inside to the outside of the aerosol-generating article (2) and heat the aerosol-generating article (2).

[0122] According to one embodiment, the antenna control unit (40) can control the length and / or shape of the antenna of the radiating unit (30).

[0123] According to one embodiment, the aerosol generating device (1) may be provided with an airflow channel through which air flows. For example, the housing (11) may include a structure (e.g., a hole) through which air from the outside can be introduced into the housing (11). The air introduced into the housing (11) may be introduced into the aerosol generating article (2) through the bottom (i.e., upstream side) of the aerosol generating article (2). The aerosol generated based on the heating of the aerosol generating article (2) may be inhaled into the user's mouth through the top (i.e., downstream side) of the aerosol generating article (2) together with the introduced air.

[0124]

[0125] FIG. 3 is a drawing illustrating a radiating part according to one embodiment of the present disclosure.

[0126] Referring to FIG. 3, the radiating part (30) may be disposed within a body (11) (e.g., a housing (11)). The radiating part (30) may be referred to as a heater assembly. The radiating part (30) may be in the shape of a tube or cylinder containing a hollow inside. The radiating part (30) may provide an insertion space (IS) inside. By the radiating part (30), an aerosol product (2) inserted into the insertion space (IS) may be heated.

[0127] The radiating part (30) may include an antenna housing (311, 312) and an antenna (320). The antenna housing (311, 312) may have a hollow cylinder shape with one side open. The inner wall (312) of the antenna housing may form an insertion space (IS) inside. The outer wall (311) of the antenna housing may surround the outer side of the inner wall (312) and form the outer surface of the antenna housing. The outer wall (311) may accommodate a shielding material (330) inside. The shielding material (330) may surround the outer side of the inner wall (312) along the outer wall. The shielding material (330) may include a metallic material. For example, the shielding material (330) may be a metal sheet or a metal mesh. The shielding material (330) may be referred to as a shielding part.

[0128] An antenna receiving space can be formed between the outer wall (311) and the inner wall (312).

[0129] The antenna (320) may be accommodated in an antenna receiving space. The antenna (320) may be a structure in which a thin film-shaped track forming the antenna is rolled up or a spiral track structure. The antenna (320) may be positioned adjacent to the insertion space (IS) and may radiate microwaves into the insertion space (IS) to dielectric heat the aerosol product (2). The antenna (320) may radiate an RF signal generated by the source part (20, see FIG. 1 and 2) into the insertion space (IS) in the form of microwaves. Here, microwaves may refer to electromagnetic waves having a frequency of 300 MHz to 300 GHz.

[0130] The antenna (320) may be changeable in length and shape. The antenna (320) may be formed from an elastic material. For example, the antenna (320) may include an elastic metallic material such as copper, iron, aluminum, chromium, or an alloy thereof (e.g., Kanthal). A portion of the antenna (320) is connected to an antenna control unit (40, see FIG. 2), and the length and shape may be changed by the operation of the antenna control unit (40).

[0131] A pair of brackets (not shown) may be attached to or coupled to the radiating member (30). Each of the pair of brackets may be coupled to an opening at one end and an opening at the other end of the hollow radiating member (30). The pair of brackets may be coupled to the radiating member (30) to support the radiating member (30).

[0132] A casing (not shown) may be attached to or coupled to the radiating part (30). The casing may surround the outer surface of the radiating part (30). The casing and the bracket may be coupled to each other to accommodate the radiating part (30) inside. Accordingly, the radiating part (30) can be protected from the outside and the radiating part (30) can be firmly supported to ensure the rigidity of the radiating part (30).

[0133]

[0134] FIG. 4 is a drawing illustrating the track and switch of an antenna according to one embodiment of the present disclosure. FIG. 4 illustrates the antenna (320) in a flattened state.

[0135] Referring to FIG. 4, the antenna (320) may have a structure in which a thin film-shaped track forming the antenna is rolled up. When unfolded flat, the antenna (320) may have a wavy shape.

[0136] The antenna (320) may include a plurality of tracks. For example, the antenna (320) may include a first track (321) to a third track (323). The first track (321) to the third track (323) may extend in the same direction overall (e.g., z-direction). Each track may include at least one bent portion and may have a serpentine shape.

[0137] One end of the first track (321) may be connected to a source connection part (324). The source connection part (324) may protrude outward from one side of the first track (321). The source connection part (324) may be formed integrally with the first track (321). The source connection part (324) may be connected to a source part (20) to receive an RF signal from the source part (20).

[0138] The shape of the first track (321) may be a rectangle having a length (L1a) and a width. The first track (321) may have an overall rectangular shape when unfolded flat. The length (L1a) of the first track (321) may be defined as the distance between the two ends of the first track (321) with respect to the direction in which the first track (321) extends (e.g., z-direction) when the antenna (320) is unfolded. The width of the first track (321) may be defined as the distance between the two ends of the first track (321) with respect to the direction perpendicular to the direction in which the first track (321) extends (e.g., x-direction) when the first track (321) is unfolded.

[0139] The second track (322) may be positioned adjacent to the first track (321). The second track (322) may be positioned parallel to the first track (321) in the longitudinal direction of the first track (321). The shape of the second track (322) may be a rectangle having a length (L1b) and a width. The length (L1b) of the second track (322) may be equal to or shorter than the length (L1a) of the first track (321).

[0140] The third track (323) may be positioned adjacent to the second track (322). The third track (323) may be positioned parallel to the first track (321) and the second track (322) in the longitudinal direction of the first track (321). The shape of the third track (323) may be a rectangle having a length (L1c) and a width. The length (L1c) of the third track (322) may be equal to or shorter than the length (L1a) of the first track (321).

[0141] A track switch (410) may be placed between adjacent tracks. The track switch (410) may be referred to as an antenna control unit. The track switch (410) may be placed between adjacent tracks. For example, the track switch (410) may include a first track switch (410a) placed between a first track (321) and a second track (322), and a second track switch (410b) placed between a second track (322) and a third track (323).

[0142] The track switch (410) can selectively connect adjacent tracks. For example, the first track switch (410a) can selectively connect the first track (321) and the second track (322) by opening and closing operations. The second track switch (410b) can selectively connect the second track (322) and the third track (323) by opening and closing operations. The track switch (410) may include at least one of an SPST (Single pole single throw) switch and an SPDT (Single pole double throw) switch.

[0143] When the first track switch (410a) is open, the first track (321) and the second track (322) can be electrically separated, and when the first track switch (410a) is closed, the first track (321) and the second track (322) can be electrically connected. When the first track (321) and the second track (322) are electrically connected, the first track (321) and the second track (322) can form a single continuous track. In other words, when the first track (321) and the second track (322) are electrically connected, the length of the antenna (320) can be extended by the length (L1b) of the second track (322).

[0144] When the second track switch (410b) is open, the second track (322) and the third track (323) can be electrically separated, and when the second track switch (410b) is closed, the second track (322) and the second track (323) can be electrically connected. When the second track (322) is electrically connected to the first track (321) and the second track (322) and the third track (323) are electrically connected, the first track (321), the second track (322), and the third track (323) can form a single continuous track. In other words, when the first track (321) to the third track (323) are electrically connected, the length of the antenna (320) can be extended by the length (L1b) of the second track (322) and the length (L1c) of the third track (323).

[0145] Accordingly, the length and shape of the antenna (320) can be easily changed by a track switch (410) that selectively connects each track of the antenna (320).

[0146]

[0147] FIG. 5 is a drawing showing that the length and shape of an antenna are changed by a switch operation according to one embodiment of the present disclosure.

[0148] Referring to FIG. 5, in the first case, the first track switch (410a) can be opened (Fig. 5(a)). In this case, the second track (322) and the third track (323) can be electrically separated from the first track (321). When an RF signal is received from the source unit (20) through the source connection unit (324), the first track (321) can operate as an antenna to radiate microwaves.

[0149] In the second case, the first track switch (410a) is closed and the second track switch (410b) can be opened (Fig. 5(b)). In this case, the second track (322) is electrically connected to the first track (321), and the third track (323) can be electrically disconnected from the first track (321). When an RF signal is received from the source unit (20) through the source connection unit (324), the first track (321) and the second track (322) can operate as a single antenna to radiate microwaves.

[0150] In the third case, the first track switch (410a) and the second track switch (410b) can be closed (Fig. 5(c)). In this case, the second track (322) and the third track (323) can be electrically connected to the first track (321). When an RF signal is received from the source unit (20) through the source connection unit (324), the first track (321), the second track (322), and the third track (323) can operate as a single antenna to radiate microwaves.

[0151] In each case, the length and shape of the antenna radiating microwaves may differ. Even if the same RF signal is applied, microwaves of different frequencies may be radiated by antennas having different lengths and shapes.

[0152] In the first case, the antenna (320) has a first length (L1a) and can radiate microwaves having a first frequency. In the second case, the antenna (320) has a second length (L1a+L1b) and can have a shape with a larger bent area than the antenna in the first case and can radiate microwaves having a second frequency different from the first frequency. In the third case, the antenna (320) has a third length (L1a+L1b+L1c) and can have a shape with a larger bent area than the antenna in the second case and can radiate microwaves having a third frequency different from the second frequency.

[0153] Accordingly, the frequency radiated from the antenna (320) can be easily changed.

[0154]

[0155] FIG. 6 is a drawing illustrating the track and switch of an antenna according to one embodiment of the present disclosure. FIG. 6 illustrates the antenna (320) in a flattened state. Detailed description of features illustrated in FIG. 6 that overlap with FIG. 4 and FIG. 5 is omitted.

[0156] Referring to FIG. 6, the antenna (320) may include a plurality of tracks. For example, the antenna (320) may include a first track (321) to a third track (323).

[0157] A track switch (410) may be positioned at a location adjacent to each track. For example, the track switch (410) may include a first track switch (410a) positioned between the first track (321) and the second track (322), a second track switch (410b) positioned between the second track (322) and the third track (323), and a third track switch (410c) positioned adjacent to the third track (323).

[0158] The first track switch (410a) can selectively connect the first track (321) and the second track (322) by switching operation. The second track switch (410b) can selectively connect the second track (322) and the third track (323) by switching operation. The third track switch (410c) can connect the third track (323) to ground or a shielding material (330) by switching operation. The first track switch (410a) and the second track switch (410b) may include a single pole double throw (SPDT) switch. The third track switch (410c) may include a single pole single throw (SPST) switch.

[0159] When the first track (321) and the second track (322) are electrically connected by the first track switch (410a), the first track (321) and the second track (322) can form a single continuous track.

[0160] When the second track (322) is electrically connected to the first track (321), and the second track (322) and the third track (323) are electrically connected by the second track switch (410b), the first track (321), the second track (322), and the third track (323) can form a single continuous track.

[0161] Accordingly, the length and shape of the antenna (320) can be easily changed by a track switch (410) that selectively connects each track of the antenna (320).

[0162]

[0163] FIG. 7 is a drawing showing that the length and shape of an antenna are changed by a switch operation according to one embodiment of the present disclosure.

[0164] Referring to FIG. 7, in the first case, the first track switch (410a) can electrically separate the first track (321) and the second track (322) (Fig. 7(a)). At this time, the first track switch (410a) can electrically connect one end of the second track (322) to ground or shielding material (330). The second track switch (410b) can electrically connect the other end of the second track (322) to one end of the third track (323). The third track switch (410c) can electrically connect the other end of the third track (323) to ground or shielding material (330).

[0165] By switching operation of the first to third track switches (410a, 410b, 410c), the second track (322) and the third track (323) can be electrically separated from the first track (321). Additionally, the second track (323) and the third track (323) can be electrically connected to ground or a shielding material (330).

[0166] When an RF signal is received from the source unit (20) through the source connection unit (324), the first track (321) can operate as an antenna to radiate microwaves. The second track (323) and the third track (323) are electrically connected to a ground or shielding material (330) to prevent the radiated microwaves from leaking outside the area where the antenna is placed or the area surrounded by the antenna.

[0167] In the second case, the first track switch (410a) can electrically connect the first track (321) and the second track (322) (Fig. 7 (b)). The second track switch (410b) can electrically disconnect the other end of the second track (322) from one end of the third track (323). At this time, the second track switch (410b) can electrically connect one end of the third track (323) to ground or shielding material (330). The third track switch (410c) can electrically connect the other end of the third track (323) to ground or shielding material (330).

[0168] By switching operation of the first to third track switches (410a, 410b, 410c), the second track (322) can be electrically connected to the first track (321), and the third track (323) can be electrically disconnected from the first track (321). Additionally, the third track (323) can be electrically connected to ground or a shielding material (330).

[0169] When an RF signal is received from the source unit (20) through the source connection unit (324), the first track (321) and the second track (322) can operate as a single antenna to radiate microwaves. The third track (323) is electrically connected to a ground or shielding material (330) to prevent the radiated microwaves from leaking outside the area where the antenna is placed or the area surrounded by the antenna.

[0170] In the third case, the first track switch (410a) can electrically connect the first track (321) and the second track (322) (Fig. 7 (c)). The second track switch (410b) can electrically connect the second track (322) and the third track (323). The third track switch (410c) can be opened.

[0171] By switching operation of the first to third track switches (410a, 410b, 410c), the second track (322) and the third track (323) can be electrically connected to the first track (321).

[0172] When an RF signal is received from the source unit (20) through the source connection unit (324), the first track (321), the second track (322), and the third track (323) can operate as a single antenna to radiate microwaves.

[0173] Accordingly, the frequency radiated from the antenna (320) can be easily changed. Additionally, by tracks that do not operate as antennas (320), the microwaves radiated from the antenna can be prevented from leaking outside the area where the antenna is placed or the area surrounded by the antenna.

[0174]

[0175] FIG. 8 is a drawing illustrating an antenna and a driving unit according to one embodiment of the present disclosure.

[0176] Referring to FIG. 8, the antenna (320) may have a spiral structure. The antenna (320) may include a spiral track (325) and a source connection (326).

[0177] The spiral track (325) may have a shape in which a long, extended line is wound to form a plurality of turns in a spiral. One end of the spiral track (325) may be connected to a source connection (326). The source connection (326) may protrude outward from one side of the spiral track (325). The source connection (326) may be formed integrally with the spiral track (325). The source connection (326) may be connected to the source unit (20) to receive an RF signal from the source unit (20).

[0178] The other end of the spiral track (325) can be connected to a driving unit (420). The driving unit (420) can be referred to as an antenna control unit. The pulling connector (327) connecting the other end of the spiral track (325) and the driving unit (420) can be formed of a dielectric material with low microwave absorption.

[0179] The driving unit (420) may include means such as a motor that rotates in a forward or reverse direction. When the driving unit (420) rotates in a forward direction, the other end of the spiral track (325) may be moved in the longitudinal direction of the track (e.g., +z direction) by the driving unit (420), and the length (L2a) and pitch (P1a) of the spiral track (325) may be increased. When the driving unit (420) rotates in a reverse direction, the other end of the spiral track (325) may be moved in the longitudinal direction of the track (e.g., -z direction) by the elastic restoring force of the track, and the length (L2a) and pitch (P1a) of the spiral track (325) may be decreased.

[0180] Accordingly, the length and shape of the antenna (320) can be easily changed by the driving unit (420) connected to the antenna (320).

[0181]

[0182] FIG. 9 is a drawing showing that the length and shape of an antenna are changed by the operation of a driving unit according to one embodiment of the present disclosure.

[0183] Referring to FIG. 9, in the first case, the driving unit (420) may not operate (Fig. 9(a)). In this case, the antenna (320) may have a first length (L2a) and a first pitch (P1a). The antenna (320) may radiate microwaves having a fourth frequency.

[0184] In the second case, the driving unit (420) can rotate in one direction to move the other end of the spiral track (325) along the longitudinal direction of the antenna (320) (Fig. 9 (b)). In this case, the antenna (320) can be extended along the longitudinal direction. The antenna (320) may have a second length (L2b) longer than the first length (L2a) and a second pitch (P1b) longer than the first pitch (P1a). The antenna (320) may radiate microwaves having a fifth frequency different from the fourth frequency.

[0185] In the third case, the driving unit (420) can rotate in one direction to further move the other end of the spiral track (325) along the longitudinal direction of the antenna (320) (Fig. 9 (c)). In this case, the antenna (320) can be extended along the longitudinal direction. The antenna (320) can have a third length (L2c) longer than the second length (L2b) and a third pitch (P1c) longer than the second pitch (P1b). The antenna (320) can radiate microwaves having a sixth frequency different from the fifth frequency.

[0186] In the second or third case, when the driving unit (420) rotates in the other direction, the other end of the spiral track (325) can move toward one end of the spiral track (325) by the elastic restoring force of the track. In this case, the antenna (320) can be reduced along the longitudinal direction, and the frequency of the microwaves radiated from the antenna (320) can be changed.

[0187] Accordingly, the frequency radiated from the antenna (320) can be easily changed.

[0188]

[0189] FIGS. 10 and FIGS. 11 are flowcharts illustrating microwave frequency change control according to one embodiment of the present disclosure. FIG. 11 shows a detailed process of the frequency change process of FIG. 10.

[0190] Referring to FIG. 10, the processor (170, see FIG. 1) of the control unit (10) can control the source unit (20) and / or antenna (320) to radiate microwaves into the insertion space (IS) (S1010). The processor (170) can receive reflected waves that are reflected from the insertion space (IS) after being radiated through the source unit (20) and / or antenna (320). The processor (170) can analyze the power of the received reflected waves, etc. (S1020). The characteristics of radiating microwaves and receiving reflected waves under the control of the processor (170) may be described above in relation to FIG. 1.

[0191] The processor (170) can compare the power of the received reflected wave with a preset threshold or threshold range. If the power of the received reflected wave is greater than the preset threshold or exceeds the preset threshold range ("Yes" of S1030), the processor (170) can control the source unit (20) and / or the antenna (320) to change the frequency of the microwave radiated from the antenna (320) (S1040). If the frequency of the microwave radiated from the antenna (320) is different from the resonance frequency of the insertion space (IS) into which the aerosol product (2) is inserted, the power of the received reflected wave may be greater than the preset threshold or exceed the preset threshold range. In other words, if the frequency of the radiated microwave differs from the resonance frequency by more than a certain allowable range, the processor (170) can change the frequency of the microwave radiated from the antenna (320).

[0192] The processor (170) can change the frequency of the microwave radiated from the antenna (320) to correspond to the resonant frequency while repeating the process from S1010 to S1040.

[0193] If the power of the received reflected wave is less than a preset threshold or falls within a preset threshold range ("No" in S1030), the processor (170) can control the source unit (20) and / or the antenna (320) to maintain the frequency of the microwave radiated from the antenna (320) (S1050). If the frequency of the radiated microwave is equal to the resonant frequency or the difference between the frequencies is within a certain allowable range, the processor (170) can maintain the frequency of the microwave radiated from the antenna (320).

[0194] Accordingly, the frequency radiated from the antenna can be easily changed to match variations in the resonance frequency, and it is possible to prevent the heating efficiency from decreasing or the device from failing due to reflected waves.

[0195]

[0196] Referring to FIG. 11, the processor (170) can change the frequency of microwaves radiated from the antenna (320) by controlling the source unit (20) and / or the antenna (320). The processor (170) can change the frequency of microwaves by first controlling the source unit (20) when the power of the received reflected wave is greater than a preset threshold or exceeds a preset threshold range.

[0197] The processor (170) can determine whether the review of the RF signal is complete (S1041). The review of the RF signal means changing the frequency of the microwave while sweeping the RF signal output from the source unit (20) within a changeable range or a set frequency band. For example, the RF signal can be sequentially changed into 10 different signals within a changeable range or a set frequency band, and the frequency of the microwave can also be changed into 10 different frequencies by each of the 10 changed RF signals. If the frequency of the microwave is changed while changing all the RF signals generated by the source unit (20) within the changeable range, the review of the RF signal is defined as completed, and if not, it is defined as not completed.

[0198] If the review of the RF signal is not completed ("No" in S1041), the processor (170) may change the RF signal within a changeable range or a set frequency band (S1042). The RF signal may be changed to a value that has not yet been changed within the changeable range or a set frequency band. Afterward, the processor (170) may control the radiation of microwaves according to the changed RF signal, receive the reflected wave to determine the power of the reflected wave, and determine whether the power of the reflected wave is greater than a threshold value or outside the threshold range.

[0199] The processor (170) can control the length or shape of the antenna (320) to be changed when the review of the RF signal is completed ("Yes" of S1041) (S1043). The processor (170) can control the length or shape of the antenna (320) to be changed within a changeable range. For example, the length or shape of the antenna (320) can be changed sequentially into three different lengths or shapes within a changeable range, and the frequency of the microwave can also be changed by each of the three lengths or shapes. For the feature of changing the length or shape of the antenna (320) by the control of the processor (170), the description in relation to FIGS. 5, 7, and 9 above may be referenced.

[0200] The processor (170) can repeat the process of changing the frequency of the microwave while sweeping the RF signal within a changeable range or set frequency band when the length or shape of the antenna (320) is changed. In other words, even if the power of the reflected wave does not become smaller than a threshold value or is not included within a threshold range due to the change in the frequency of the RF signal, the frequency of the microwave radiated from the antenna (320) can be changed to correspond to the resonant frequency by repeating the process of changing the frequency of the RF signal while changing the length or shape of the antenna (320) stepwise.

[0201] Accordingly, compared to the case where only RF signals are controlled, the range in which the frequency of microwaves radiated from the antenna (320) can be changed can be expanded, and the frequency of microwaves radiated from the antenna can be easily changed in response to fluctuations in the resonance frequency.

[0202]

[0203] As described above, according to at least one of the embodiments of the present disclosure, at least one of the length and shape of the antenna is controlled to change, thereby allowing the frequency radiated from the antenna to be easily changed.

[0204] According to at least one embodiment of the present disclosure, the antenna is provided with a plurality of tracks and a track switch that electrically connects or disconnects the tracks between each track, so that the length and shape of the antenna can be easily changed.

[0205] According to at least one embodiment of the present disclosure, a driving unit connected to one end of the antenna is provided to extend or shorten the antenna in one direction, thereby allowing the length and shape of the antenna to be easily changed.

[0206] According to at least one embodiment of the present disclosure, by changing the length or shape of the output RF signal and the antenna based on the power of the reflected wave, the frequency of the microwave radiated from the antenna can be easily changed to match the fluctuation of the resonant frequency, and the heating efficiency can be reduced or the device can be prevented from failing due to the reflected wave.

[0207]

[0208]

[0209] Referring to FIGS. 1 to 11, an aerosol generating device (1) comprises: a body (11) providing an insertion space (IS) in which an aerosol product (2) is received; an antenna (320) disposed adjacent to the insertion space (IS) and radiating microwaves into the insertion space (IS) to dielectric heat the aerosol product (2); and a control unit (10) that controls the frequency of microwaves radiated from the antenna (320). The antenna (320) may have a changeable length and shape, and the control unit (10) may change the frequency radiated from the antenna (320) by controlling at least one of the length and shape of the antenna (320) to change.

[0210] Additionally, according to another aspect of the present disclosure, the antenna (320) may include an antenna with a wavy shape.

[0211] Additionally, according to another aspect of the present disclosure, the antenna (320) may include a first track (321); and a second track (322) that can be optionally connected to the first track (321).

[0212] Additionally, according to another aspect of the present disclosure, an antenna adjustment unit (40) may be included that is connected to the first track (321) and the second track (322) and adjusts the length and shape of the antenna (320).

[0213] Additionally, according to another aspect of the present disclosure, the antenna control unit (40) may include a track switch (410) disposed between the first track (321) and the second track (322) and switching the connection between one end of the first track (321) and one end of the second track (322).

[0214] Additionally, according to another aspect of the present disclosure, the control unit (10) can control the track switch (410) to electrically connect or electrically disconnect the first track (321) and the second track (322).

[0215] Additionally, according to another aspect of the present disclosure, a shielding portion (330) surrounding the outside of the antenna (320) is included, and the control portion (10) can control the track switch (410) to electrically separate the first track (321) and the second track (322) and electrically connect the second track (322) to the shielding portion (330).

[0216] Additionally, according to another aspect of the present disclosure, the antenna (320) may include a spiral antenna.

[0217] Additionally, according to another aspect of the present disclosure, an antenna control unit (40) may be included that is connected to the spiral antenna and moves one end of the spiral antenna along the longitudinal direction of the spiral antenna to adjust the length and pitch of the spiral antenna.

[0218] Additionally, according to another aspect of the present disclosure, the antenna control unit (40) may include a driving unit (420) connected to one end of the helical antenna and driven in a forward or reverse direction to increase or decrease the length and pitch of the helical antenna.

[0219] Additionally, according to another aspect of the present disclosure, a source unit (20) that transmits an RF signal to the antenna (320) is included, and the control unit (10) can change the frequency of the microwave radiated from the antenna (320) by controlling the RF signal output from the source unit (20) based on the power of the reflected wave received through the antenna (320) being greater than the threshold value.

[0220] Additionally, according to another aspect of the present disclosure, the control unit (10) can control the source unit (20) to change the RF signal output from the source unit (20) within a set frequency band, determine the power of the reflected wave according to the change in the RF signal, and control the length or shape of the antenna (320) to change when the power of the reflected wave does not become smaller than the threshold value.

[0221] Additionally, according to another aspect of the present disclosure, the antenna (320) may be formed of an elastic material.

[0222]

[0223] 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.

[0224] 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, it means that even if the combination between configurations is not directly described, combination is possible except in cases where it is described that combination is impossible.

[0225] 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

1. A body providing an insertion space for receiving an aerosol product; An antenna disposed adjacent to the above insertion space and radiating microwaves into the insertion space to dielectric heat the aerosol product; and It includes a control unit that controls the frequency of microwaves radiated from the above antenna, and The above antenna is, The length and shape can be changed, The above control unit is, An aerosol generating device that changes the frequency radiated from the antenna by controlling at least one of the length and shape of the antenna to be changed.

2. In Paragraph 1, The above antenna is, Aerosol generating device including a serpentine antenna.

3. In Paragraph 2, The above antenna is, Track 1; and An aerosol generating device comprising a second track that can be optionally connected to the first track.

4. In Paragraph 3, An aerosol generating device comprising an antenna control unit connected to the first track and the second track and controlling the length and shape of the antenna.

5. In Paragraph 4, The above antenna control unit is, An aerosol generating device comprising a track switch disposed between the first track and the second track and switching the connection between one end of the first track and one end of the second track.

6. In Paragraph 5, The above control unit is, An aerosol generating device that controls the above track switch to electrically connect or electrically separate the first track and the second track.

7. In Paragraph 6, It includes a shielding portion surrounding the outer side of the above antenna, and The above control unit is, By controlling the above track switch, the first track and the second track are electrically separated, and An aerosol generating device that electrically connects the above-mentioned second track to the above-mentioned shielding part.

8. In Paragraph 1, The above antenna is, Aerosol generating device including a spiral antenna.

9. In Paragraph 8, An aerosol generating device comprising: an antenna control unit connected to the spiral antenna and moving one end of the spiral antenna in the longitudinal direction of the spiral antenna to adjust the length and pitch of the spiral antenna.

10. In Paragraph 9, The above antenna control unit is, An aerosol generating device comprising a driving unit connected to one end of the spiral antenna and driven in a forward or reverse direction to increase or decrease the length and pitch of the spiral antenna.

11. In Paragraph 1, It includes a source unit that transmits an RF signal to the above antenna, and The above control unit is, The power of the reflected wave received through the above antenna is compared with a threshold value, and An aerosol generating device that changes the frequency of microwaves radiated from the antenna by controlling the RF signal output from the source unit based on the power of the reflected wave being greater than the threshold value.

12. In Paragraph 11, The above control unit is, By controlling the source unit, the RF signal output from the source unit is changed within a set frequency band, and Determining the power of the reflected wave according to the change in the RF signal, An aerosol generating device that controls the length or shape of the antenna to change when the power of the reflected wave does not become smaller than the threshold value.

13. In Paragraph 1, The above antenna is, Aerosol generating device formed of an elastic material.

Images