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WO2025181746A1 - Système de génération d'aérosol amélioré - Google Patents

Système de génération d'aérosol amélioré

Info

Publication number
WO2025181746A1
WO2025181746A1 PCT/IB2025/052186 IB2025052186W WO2025181746A1 WO 2025181746 A1 WO2025181746 A1 WO 2025181746A1 IB 2025052186 W IB2025052186 W IB 2025052186W WO 2025181746 A1 WO2025181746 A1 WO 2025181746A1
Authority
WO
WIPO (PCT)
Prior art keywords
heater
constant voltage
aerosol
control unit
generating device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/IB2025/052186
Other languages
English (en)
Inventor
Subburaj Madasamy
Jayakumar KURNOOL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITC Ltd
Original Assignee
ITC Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ITC Ltd filed Critical ITC Ltd
Publication of WO2025181746A1 publication Critical patent/WO2025181746A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/57—Temperature control

Definitions

  • the present invention relates to an aerosol-generating device. More particularly, the present invention relates to a constant voltage delivery system for regulating power to a heater within the aerosol-generating device.
  • Aerosol-generating devices are commonly used for aerosolization of aerosol-forming substrates, such as aerosol-generating liquids.
  • the aerosolgenerating device consists of a cartridge and a body.
  • the cartridge comprises of a heater, aerosol-generating substrate, condensation chamber, mouthpiece, connector pin (e.g. pogo pin and the like), and space to store the aerosol -generating substrate whereas the body consists of a control unit and battery.
  • the control unit is responsible for controlling the overall function of the aerosol-generating device. In general, control units control the power delivery from the energy source (battery) to the heater by using PWM (pulse width modulation) techniques.
  • PWM pulse width modulation
  • the control unit controls the power delivery to the heater using the pulse width modulation technique to maintain an average power of 5W watts supplied to the heater.
  • the control unit instead of delivering the constant 5W of power, delivers the average power of 5W to the heater.
  • 5W average power can be delivered to the heater in different methods such as 10W of peak power at 50% duty cycle, 12.5 Watts of peak power at 40% duty cycle, and 17 Watts of peak power at 30% duty cycle. In all cases, the power given to the heater is more than the desired limit.
  • US20200352247A describes a control unit configured to control the conversion unit by applying a constant voltage to the entire circuit to derive the electric resistance value of the load.
  • US’247 employs a mechanism to compare the change in the heater's resistance value during the heating cycle against a stored, predefined value in memory. This comparison calibrates the heater characteristics, and the new value is stored in memory for future reference. As a result, US’247 facilitates liquid depletion detection in the cartridge, dry inhalation prevention, and temperature control.
  • WO2022239405A1 describes an aerosol -generating device with a charging IC configured to boost the power input from the power supply to the charging terminal to generate high-voltage power and supply it to the first load via the input terminal.
  • WO’405 focuses on the power supply unit, which consists of a charging IC, a power supply (battery), an external power supply, and connectors.
  • WO’405 attempts to boost the power delivery to the battery, whereby the charging IC takes power from the input power supply and modifies (boosts) it to meet the high-power demand of the battery. As a result, WO’405 can reduce the charging time.
  • US11178911B2 describes a voltage sensor connected in parallel with the load, configured to output a voltage value applied to the load.
  • US’911 further describes a mechanism to determine the voltage across the heater as well as the current through the heater.
  • US’911 further attempted to create a resistance versus temperature profile by using the voltage and current values captured using sensing circuits. This method may be used to estimate the operating temperature of the heater.
  • EP2967140B1 Other general prior-art references in the domain, such as EP2967140B1, describe heating control arrangements using pulse width modulation (PWM), which regulate average power based on cycle periods.
  • PWM pulse width modulation
  • EP4406435A1 introduces a temperature monitoring system but relies on complex closed-loop controls requiring feedback circuits.
  • CN114868977A focuses on heat dissipation and waste heat utilization but does not address the problem of heater thermal stress due to power fluctuations.
  • the present invention aims to reduce the thermal stress to the heater as well as the aerosol-generating substrate for operating the heater in the constant voltage method.
  • the voltage across the heater will always be constant during the operation.
  • the present invention discloses a constant voltage delivery system designed specifically for aerosol -generating devices.
  • the present invention comprises a constant voltage converter, a control unit, a heater, an energy source (battery), an aerosol-generating substrate, and a cartridge.
  • the present invention ensures a consistent voltage is supplied to the heating element (heater) throughout the device's operation.
  • the present invention aims to address key issues such as overheating, degradation of the heater, and deterioration of the quality of the aerosol-generating substrate.
  • the control unit delivers power to the heater from a constant voltage converter rather than directly from the energy source (battery).
  • the voltage supplied to the heater is continuous, ensuring no discontinuity in voltage delivery throughout the heating cycle.
  • PWM pulse width modulation
  • the present invention maintains a steady voltage across the heater, preventing temperature spikes. This constant voltage method reduces thermal stress and enhances heater durability. Moreover, the power delivered to the heater will not exceed the desired power.
  • the control unit incorporates a constant voltage converter, which modifies the variable voltage supplied by the energy source (battery) to provide a constant voltage across the heater. It draws power from the energy source (battery) and adjusts the voltage based on the heater resistance, ensuring continuous delivery throughout the heating cycle.
  • control unit adjusts the voltage delivered to the heater based on changes in the heater's resistance during the heating cycle.
  • Figure 1 illustrates the structural arrangement of an aerosol -generating device (100) in accordance with one embodiment of the present invention.
  • Figure 2 illustrates the fundamental structural arrangement and voltage profile across the heater in the constant voltage method, as described in an embodiment of the present invention.
  • Figure 3 illustrates the fundamental structural arrangement and voltage profile across the heater in the pulse width modulation (PWM) method, according to an embodiment of the existing prior art.
  • Figure 4 illustrates validation plots comparing bare heater test results obtained using both the constant voltage method and the pulse width modulation (PWM) method.
  • Figure 5 illustrates validation plots comparing temperature measurements taken at the heater's side using both the constant voltage method and the pulse width modulation (PWM) method with respect to the operating time of device (100).
  • PWM pulse width modulation
  • Figure 6 illustrates validation plots comparing the maximum and mean temperature measurements at the bottom of the heater, obtained using both the constant voltage method and the pulse width modulation (PWM) method, with respect to the operating time of device (100).
  • PWM pulse width modulation
  • Cartridge refers to a container that can hold the aerosolgenerating substrate.
  • the present invention introduces a series of innovative embodiments for an improved aerosol-generating device.
  • the device is designed to enhance the consistency and efficiency of aerosol generation by ensuring steady and controlled power delivery to the heater, which mitigates performance inconsistencies such as overheating, underheating, and variable aerosol quality.
  • the constant voltage converter plays a crucial role in stabilizing the power supply, converting the fluctuating voltage from the energy source into a steady, constant voltage to optimize the heating process.
  • the present invention discloses an improved aerosol-generating device that ensures efficient and controlled aerosolization of an aerosol-generating substrate through the utilization of a constant voltage regulation mechanism.
  • the device consists of two primary components: a body and a cartridge.
  • the components within the body and cartridge are operably connected to ensure electrical communication and transfer control signals, enabling precise control, efficient operation, and user-friendly functionality.
  • the body incorporates essential elements such as a control unit, a constant voltage converter, an energy source (battery), and heater termination connections.
  • the cartridge houses a heater, an aerosol-generating substrate, a condensation chamber, and a mouthpiece for generating and delivering the aerosol.
  • the integration of these components ensures seamless operation and optimal performance, resulting in a device that is both compact and efficient.
  • a key feature of the present invention is the constant voltage converter, which regulates the fluctuating battery voltage, typically ranging from 3.1V to 4.3V depending on the battery charge level.
  • Conventional aerosolgenerating devices utilize pulse width modulation (PWM) to regulate the operating power supplied to the heater, where the heater receives bursts of power interspersed with off-cycles, leading to irregular heating patterns and inconsistent aerosol quality.
  • PWM pulse width modulation
  • the constant voltage converter modifies the incoming fluctuating voltage into a steady, constant voltage output based on the resistance of the heater. This ensures that the heater receives a constant power supply, thereby maintaining uniform heat distribution across the heating surface, and preventing overheating, thermal stress, degradation, and deterioration of the aerosol-generating substrate quality.
  • the present invention features a straightforward and reliable power regulation mechanism facilitated by the control unit and the constant voltage converter. Unlike conventional devices that rely on averaging power delivery over time, which contributes to a more rapid initial increase in temperature, the present invention provides a direct and simplified control mechanism.
  • the control unit continuously regulates power delivery by adjusting the constant voltage applied to the heater based on its real-time resistance changes. This ensures uniform temperature distribution across the heater surface, leading to consistent aerosol generation.
  • the present invention enhances the lifespan of the heater by mitigating overheating and thermal stress.
  • the regulated constant voltage delivery ensures that the heater is not exposed to excessive power levels that could degrade its structure or reduce its efficiency.
  • the invention ensures that the heater performs consistently over an extended period. This also prevents deterioration of the aerosol-generating substrate, ensuring that users consistently experience high- quality aerosol generation without flavor degradation. This feature makes the device suitable for prolonged use, reducing the need for frequent heater replacements.
  • the present invention utilizes a constant voltage method to ensure precise and consistent power delivery across the heater throughout the heating cycle.
  • This method begins with the control unit measuring the inherent resistance of the heater both before and during operation. Based on this resistance, the control unit determines the desired constant voltage required for efficient heating and sends a control signal to the constant voltage converter.
  • the constant voltage converter modifies the fluctuating battery voltage (ranging from 3.1V to 4.3 V, depending on charge levels) into a steady, constant voltage suitable for the heater.
  • the control unit continuously monitors the variation in heater resistance in real-time due to prolonged use. As resistance changes, the control unit dynamically adjusts the constant voltage output from the converter to maintain a stable power level. This ensures that the heater consistently receives the required power, preventing power interruptions, overheating, or underheating. By preventing fluctuations in heating performance, this method facilitates uniform heating, efficient aerosolization of the aerosol -generating substrate, and enhanced aerosol quality. Furthermore, the regulated power delivery reduces thermal stress, preventing premature degradation of the heater and extending its lifespan. This approach ensures a reliable and efficient heating system for an aerosol-generating device.
  • the constant voltage method ensures precise temperature control by dynamically regulating voltage delivery to the heater, thereby minimizing thermal stress and enhancing heater longevity.
  • the method prevents temperature fluctuations, ensuring uniform heat distribution across the heater. This results in consistent heating, optimizing aerosol generation while preventing degradation due to overheating or inefficiencies due to underheating.
  • the improved aerosol-generating device (100) ensures efficient and controlled aerosolization of an aerosol-generating substrate through the utilization of a constant voltage regulation mechanism.
  • the device (100) consists of two primary components: a body (120) and a cartridge (140).
  • the body (120) incorporates essential elements such as a control unit (121), a constant voltage converter (122), and an energy source (battery) (123).
  • the cartridge (140) houses a heater (141), a condensation chamber (142), and a mouthpiece (143) attached at one end.
  • the components within the body (120) and cartridge (140) are operably connected to ensure electrical communication and the transfer of control signals, enabling precise control, efficient operation, and user-friendly functionality.
  • the body (120) constitutes the bottom portion of the improved aerosol-generating device (100), wherein the energy source (battery) (123) provides the required electrical power to the entire device (100).
  • the cartridge (140) constitutes the top portion of the aerosol-generating device (100), where aerosol is generated by heating the aerosol-generating substrate contained therein.
  • One end of the cartridge (140) is removably attached to the mouthpiece (143), while the opposite end is removably attached to the body (120) and incorporates a leak-proof sleeve to prevent leakage of the aerosol-generating substrate from the cartridge (140) into the body (120).
  • the control unit (121) within the body (120) incorporates the constant voltage converter (122), a core component of this invention.
  • the constant voltage converter (122) is in electrical communication with both the energy source (battery) (123) and the heater (141).
  • the constant voltage converter (122) receives the fluctuating battery voltage, typically ranging from 3.1V to 4.3V depending on the energy source (battery) (123) charge level, and modifies it into a steady, constant voltage output based on the resistance of the heater (141).
  • the control unit (121) is programmed to monitor the inherent resistance of the heater (141) in real-time and adjust the constant voltage supply accordingly. As illustrated in Figure 2, this adaptive control mechanism allows the device (100) to maintain a consistent heating profile throughout the aerosolization process. As the heater (141) experiences resistance changes due to prolonged use or heating cycle, the control unit (121) ensures that the constant voltage converter (122) delivers an appropriate and desired constant voltage to sustain efficient and uniform heating. This prevents thermal stress on the heater (141) and significantly extends its lifespan, thereby enhancing the device's (100) durability and reliability over extended use.
  • the control unit (121) determines the desired constant voltage to be delivered across the heater (141) based on Ohm’s Law, which is expressed as:
  • V refers to the desired constant voltage delivered across the heater (141)
  • P refers to the optimal power required for the aerosolization process
  • R represents the measured value of the inherent resistance of the heater (141) in realtime.
  • V bW x 1.15(1 « 2.4 Volts
  • control unit (121) sends a control signal to the constant voltage converter (122) to ensure a steady and constant voltage of 2.4 Volts is delivered to the heater (141). This guarantees a consistent optimal power of 5 Watts to the heater (141), resulting in uninterrupted and uniform heating across the heater surface.
  • the optimal power required for the aerosolization process can be adjusted based on user preferences for the aerosol generation quality.
  • a core aspect of this invention is ensuring a constant voltage supply, based on the measured heater resistance, to achieve the user-preferred optimal power across the heater (141).
  • the constant voltage converter (122) ensures uninterrupted power delivery without on-off cycle interruptions to average the desired power delivered to the heater (141).
  • the improved aerosol -generating device (100) supplies a constant power flow instead of average power, ensuring that the heater (141) remains active throughout the heating cycle to avoid temperature fluctuations across the heater surface during the heating cycle.
  • control unit (121) and the constant voltage converter (122) offer a straightforward and reliable power regulation mechanism to avoid a more rapid initial increase in temperature and subsequently reduce it to average out the desired power flow across the heater (141).
  • the control unit (121), through the constant voltage converter (122), provides consistent power delivery throughout the heating cycle by monitoring resistance variations in the heater (141). This ensures uniform temperature distribution across the heater surface, leading to consistent aerosol generation.
  • control unit (121) in conjunction with the constant voltage converter (122), ensures uninterrupted, steady, and constant voltage power delivery to the heater throughout the heating cycle, preventing both overheating and underheating, thereby maintaining optimal heating performance.
  • the improved aerosol -generating device (100) enhances the lifespan of the heater (141) by mitigating overheating and thermal stress.
  • the regulated constant voltage delivery ensures that the heater (141) is not exposed to excessive or deficient power levels attributable to the fluctuating battery voltage.
  • the device (100) maintains an optimal temperature with a consistent voltage supply, thereby ensuring that the heater (141) performs consistently over an extended period.
  • the improved aerosol-generating device (100) employs a constant voltage method to ensure precise and consistent power delivery to the heater (141) throughout the heating cycle.
  • the control unit (121) measures the inherent resistance of the heater (141) both before and during operation. Based on this realtime resistance measurement, the control unit (121) calculates the desired constant voltage necessary for uniform heating and transmits a corresponding control signal to the constant voltage converter (122).
  • the constant voltage converter (122) then transforms the fluctuating battery voltage (typically ranging from 3.1V to 4.3V, depending on charge levels) into a stable, constant voltage suitable for the heater (141).
  • the control unit (121) continuously monitors any variations in the heater's resistance. As the resistance changes, the control unit (121) dynamically adjusts the constant voltage output from the constant voltage converter (122) to maintain a stable power level at the heater (141) end. This ensures that the heater (141) consistently receives the required power, thereby preventing power interruptions, overheating, or underheating. By mitigating fluctuations in heating performance, this method promotes uniform heating, efficient vaporization of the aerosol-generating substrate, and enhanced aerosol quality.
  • the constant voltage method achieves precise temperature control through dynamic regulation of voltage delivery to the heater (141), effectively minimizing thermal stress and prolonging the heater's (141) operational lifespan. By maintaining a consistent voltage supply, the method mitigates temperature fluctuations, ensuring uniform heat distribution across the heater (141).
  • the improved aerosol-generating device (100) disclosed herein incorporates a control unit (121) with a constant voltage converter (122) to transform fluctuating battery voltage into a stable, constant power supply for the heater (141).
  • a control unit (121) with a constant voltage converter (122) to transform fluctuating battery voltage into a stable, constant power supply for the heater (141).
  • the device (100) achieves consistent heating performance, which prevents overheating, underheating, and thermal stress.
  • This precise voltage regulation extends the heater's lifespan, ensures efficient aerosolization of the substrate, and maintains consistent aerosol quality.
  • uniform heat distribution across the heater (141) minimizes temperature fluctuations, providing precise temperature control and a reliable, uninterrupted heating cycle, thereby resulting in a durable and efficient aerosolgenerating device (100).
  • the control unit along with the constant voltage converter, is crucial for managing battery power to the heater by using a constant voltage method to ensure a stable voltage, which is essential for maintaining the desired temperature effectively, the control unit regulates power distribution, considering user needs and heater resistance for efficient and safe operation, while the converter handles battery voltages (3.1V-4.3V), converting them into a steady output to prevent overheating or underheating, thus providing a reliable and effective heating solution tailored to user needs.
  • the control unit and MOSFET switch manage power delivery from the energy source (battery) to the heating element using pulse width modulation (PWM) to regulate operating power.
  • PWM pulse width modulation
  • PWM adjusts the duty cycle, which is the proportion of time the MOSFET is on, allowing the control unit to fine-tune power delivery based on user preferences, heater resistance, and battery voltage.
  • the battery voltage fluctuates (3.1V-4.3V), resulting in potential peak power outputs (9-18.5W) that are converted to average power via PWM.
  • high peak power can cause significant temperature increases and thermal stress on both the heater and the aerosol -generating liquid. Managing these thermal dynamics is crucial for device longevity and maintaining optimal performance.
  • the PWM method delivers the same average power (5 watts) through a series of on-and-off cycles
  • PWM method adjusts the duty cycle of peak power based on the battery voltage to deliver average power of 5 Watts which causes a rapid initial increase in temperature, characteristic of pulse width modulation.
  • the PWM method regulates the duty cycle of peak power according to the battery voltage, aiming to deliver an average power of 5 watts. This adjustment leads to a rapid initial increase in temperature.
  • the experimental study on temperature measurements analyzes the pulse width modulation (PWM) method shows a significant temperature difference of approximately 208°C between the maximum recorded temperature and the mean temperature, highlighting the temperature fluctuations inherent in PWM thermal control.
  • the constant voltage method demonstrates a slightly reduced temperature difference of 185°C between its maximum and mean temperatures. This analysis indicates that the constant voltage method is more effective in achieving uniform heating, distributing heat more evenly and resulting in less temperature variation. While pulse width modulation method may enable rapid changes in heating, it creates less stable temperature conditions.
  • the present invention may take many forms and modifications, and the specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. It should be understood, however, that the invention is not to be limited to the particular forms set forth in the detailed description, but rather to include all modifications and equivalents within the spirit and scope of the invention as defined.

Landscapes

  • Control Of Resistance Heating (AREA)

Abstract

La présente invention concerne un dispositif de génération d'aérosol amélioré (100) comprenant un mécanisme de distribution de tension constante pour réguler la puissance fournie à un dispositif de chauffage (141). Le dispositif (100) comprend un convertisseur de tension constante (122), une unité de commande (121), un dispositif de chauffage (141), une source d'énergie (batterie) (123), un substrat de génération d'aérosol-5 et une cartouche (140). Contrairement aux procédés classiques de modulation de largeur d'impulsion (PWM) qui introduisent des fluctuations de puissance, l'invention assure une alimentation en tension stable au dispositif de chauffage (141), réduisant au minimum la contrainte thermique, améliorant la durée de vie du dispositif de chauffage (141), et optimisant la qualité d'aérosol. L'unité de commande (121) ajuste dynamiquement la tension constante fournie au dispositif de chauffage (141) sur la base de la résistance du dispositif de chauffage pour assurer une distribution de puissance stable tout au long du cycle de chauffage. Ceci empêche la surchauffe, la dégradation du substrat de génération d'aérosol et les fluctuations de la production d'aérosol.
PCT/IB2025/052186 2024-03-01 2025-02-28 Système de génération d'aérosol amélioré Pending WO2025181746A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202411015717 2024-03-01
IN202411015717 2024-03-01

Publications (1)

Publication Number Publication Date
WO2025181746A1 true WO2025181746A1 (fr) 2025-09-04

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Application Number Title Priority Date Filing Date
PCT/IB2025/052186 Pending WO2025181746A1 (fr) 2024-03-01 2025-02-28 Système de génération d'aérosol amélioré

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WO (1) WO2025181746A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2967140B1 (fr) 2013-03-15 2017-05-17 R. J. Reynolds Tobacco Company Agencement de commande de chauffage pour un article à fumer électronique, et système et procédé associés
US20200046033A1 (en) * 2017-05-03 2020-02-13 Philip Morris Products S.A. A system and method for temperature control in an electrically heated aerosol-generating device
US20200352247A1 (en) 2018-01-26 2020-11-12 Japan Tobacco Inc. Aerosol generation device, and method and program for operating same
US11178911B2 (en) 2019-10-28 2021-11-23 Japan Tobacco Inc. Aerosol inhaler and control device of aerosol inhaler
CN114868977A (zh) 2022-05-18 2022-08-09 四川三联新材料有限公司 具有散热与余热利用管理系统的气溶胶生成装置
WO2022230041A1 (fr) * 2021-04-27 2022-11-03 日本たばこ産業株式会社 Dispositif de génération d'aérosol, procédé de commande et programme
WO2022239405A1 (fr) 2021-05-10 2022-11-17 日本たばこ産業株式会社 Unité d'alimentation électrique de générateur d'aérosol
EP3701815B1 (fr) * 2017-10-24 2023-02-22 Japan Tobacco Inc. Dispositif de génération d'aérosol, et procédé et programme de fonctionnement associé
EP4406435A1 (fr) 2023-01-24 2024-07-31 Imperial Tobacco Limited Appareil de génération d'aérosol

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2967140B1 (fr) 2013-03-15 2017-05-17 R. J. Reynolds Tobacco Company Agencement de commande de chauffage pour un article à fumer électronique, et système et procédé associés
US20200046033A1 (en) * 2017-05-03 2020-02-13 Philip Morris Products S.A. A system and method for temperature control in an electrically heated aerosol-generating device
EP3701815B1 (fr) * 2017-10-24 2023-02-22 Japan Tobacco Inc. Dispositif de génération d'aérosol, et procédé et programme de fonctionnement associé
US20200352247A1 (en) 2018-01-26 2020-11-12 Japan Tobacco Inc. Aerosol generation device, and method and program for operating same
US11178911B2 (en) 2019-10-28 2021-11-23 Japan Tobacco Inc. Aerosol inhaler and control device of aerosol inhaler
WO2022230041A1 (fr) * 2021-04-27 2022-11-03 日本たばこ産業株式会社 Dispositif de génération d'aérosol, procédé de commande et programme
WO2022239405A1 (fr) 2021-05-10 2022-11-17 日本たばこ産業株式会社 Unité d'alimentation électrique de générateur d'aérosol
CN114868977A (zh) 2022-05-18 2022-08-09 四川三联新材料有限公司 具有散热与余热利用管理系统的气溶胶生成装置
EP4406435A1 (fr) 2023-01-24 2024-07-31 Imperial Tobacco Limited Appareil de génération d'aérosol

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