US20250221464A1 - An aerosol-generating device and system and method for control thereof - Google Patents

An aerosol-generating device and system and method for control thereof Download PDF

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Publication number
US20250221464A1
US20250221464A1 US18/852,725 US202318852725A US2025221464A1 US 20250221464 A1 US20250221464 A1 US 20250221464A1 US 202318852725 A US202318852725 A US 202318852725A US 2025221464 A1 US2025221464 A1 US 2025221464A1
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United States
Prior art keywords
aerosol
temperature
heating
time period
forming substrate
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US18/852,725
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English (en)
Inventor
Maxime Clément Charles CHATEAU
Farhang MOHSENI
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Philip Morris Products SA
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Philip Morris Products SA
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Assigned to PHILIP MORRIS PRODUCTS S.A. reassignment PHILIP MORRIS PRODUCTS S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHATEAU, Maxime Clément Charles, MOHSENI, Farhang
Publication of US20250221464A1 publication Critical patent/US20250221464A1/en
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    • 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
    • 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
    • A24F40/10—Devices using liquid inhalable precursors
    • 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
    • A24F40/20—Devices using solid inhalable precursors
    • 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
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • 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
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
    • 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
    • A24F40/51—Arrangement of sensors
    • 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
    • A24F40/53—Monitoring, e.g. fault detection

Definitions

  • the present disclosure relates to a method of controlling aerosol production in an aerosol-generating device that is configured to heat an aerosol-generating article comprising a solid or a gel aerosol-forming substrate.
  • the present disclosure also relates to the aerosol-generating device and a system comprising the aerosol-generating device and the aerosol-generating article.
  • Aerosol-generating devices may comprise an electrically operated heat source that is configured to heat an aerosol-generating article comprising an aerosol-forming substrate to generate an aerosol.
  • an aerosol is generated by the transfer of heat from the heat source to a physically separate aerosol-forming substrate.
  • volatile compounds are released from the aerosol-forming substrate by heat transfer to the aerosol-forming substrate from the heat source and entrained in air drawn through the aerosol-generating article. As the released compounds cool, they condense to form an aerosol that is inhaled by the user.
  • a number of handheld aerosol-generating devices configured to heat aerosol-forming substrates of heated aerosol-generating articles are known in the art. These include electrically-operated aerosol-generating devices in which an aerosol is generated by the transfer of heat from one or more electrical heating elements of the aerosol-generating device to the aerosol-forming substrate of the heated aerosol-generating article.
  • Known handheld electrically operated aerosol-generating devices typically comprise a battery, control electronics and one or more electrical heating elements for heating the aerosol-forming substrate of a heated aerosol-generating article.
  • a method of controlling aerosol production in an aerosol-generating device comprises: a heating chamber configured to at least partially receive an aerosol-generating article comprising an aerosol-forming substrate; a heating system associated with a heating element that is configured to internally heat the aerosol-forming substrate from within the aerosol-forming substrate; and a power source for providing power to the heating system.
  • the method comprises: receiving, by the heating chamber, the aerosol-generating article, wherein the aerosol-forming substrate has a total aerosol former content greater than 30 percent by weight, and wherein the aerosol-forming substrate is a solid or a gel; and heating the aerosol-forming substrate to form an aerosol for inhalation by a user by controlling the power to: increase a temperature of the heating element from an initial temperature to a first temperature; and maintain the temperature of the heating element constant at the first temperature for a duration of a first predetermined time period, wherein the first temperature is between 245 and 285 degrees Celsius.
  • the thermal inertia of the aerosol-forming substrate is overcome and the amount of vaporized desired volatile compounds in the aerosol inhaled by the user is improved from the first puff.
  • aerosol-generating device is used to describe a device that interacts with the aerosol forming substrate of an aerosol generating article to generate an aerosol.
  • the aerosol-generating device may be a handheld electrically-operated device.
  • aerosol-generating article is used to describe an article comprising an aerosol-forming substrate that is heated to generate an inhalable aerosol for delivery to a user.
  • An aerosol-generating article may be disposable.
  • the term “aerosol” is used to describe a dispersion of solid particles, or liquid droplets, or a combination of solid particles and liquid droplets, in a gas.
  • the aerosol may be visible or invisible.
  • the aerosol may include vapors of substances that are ordinarily liquid or solid at room temperature as well as solid particles, or liquid droplets, or a combination of solid particles and liquid droplets.
  • aerosol-forming substrate is used to describe a substrate comprising aerosol-generating material that is capable of releasing upon heating volatile compounds that can generate an aerosol.
  • the power source is a battery, such as a lithium ion battery.
  • the power source may be another form of charge storage device such as a capacitor.
  • the power source may require recharging.
  • the power source may have sufficient capacity to allow for the continuous generation of aerosol for a period of around six minutes or for a period that is a multiple of six minutes.
  • the power source may have sufficient capacity to allow for a predetermined number of puffs or discrete activations of the heating system.
  • aerosol former is used to describe a compound that, in use, facilitates formation of the aerosol, and that preferably is substantially resistant to thermal degradation at the operating temperature of an aerosol-generating article or aerosol-generating system comprising the aerosol-forming substrate.
  • total aerosol former content is used to describe the combined content of all aerosol formers in the aerosol-forming substrate.
  • the power may be controlled based on a heating profile of a plurality of heating profiles, wherein each heating profile defines how to adjust the temperature of the heating element during each of the time periods.
  • the method may further comprise selecting the heating profile based on identifying the aerosol-generating article.
  • the power may be controlled based on a heating profile of a plurality of heating profiles, wherein each heating profile may define how to adjust the temperature of the heating element during the second time period.
  • inductively heat refers to the heating of a heating element, such as a susceptor when penetrated by an alternating magnetic field.
  • the heating may be caused by the generation of eddy currents in the heating element.
  • the heating may be caused by magnetic hysteresis losses.
  • the method may further comprise controlling the power to: during a pre-heating time period before the first predetermined time period, increasing the temperature of the heating element from an ambient temperature to the initial temperature.
  • the pre-heating time period ensures that, whatever the physical condition of the aerosol-forming substrate (dry or humid, for example), the time duration of the pre-heating time period is sufficient for the aerosol-forming substrate to reach a minimum operating temperature, in order to be ready to feed continuous power and reach the first operating temperature as quickly as possible for generating sufficient aerosol to be inhaled by the user.
  • This is particularly advantageous for aerosol-forming substrates having a high aerosol former content (greater than 30 percent by 15 weight) because such substrates typically have a higher moisture content after thermal equilibrium has been reached.
  • the method may further comprise controlling the power to: during a pre-heating time period before the first predetermined time period, increasing the temperature of the heating element from an ambient temperature to the initial temperature.
  • the pre-heating time period may have a duration between 10 and 20 seconds.
  • the aerosol-forming substrate may comprise a total aerosol-former content that is greater than 35 percent by weight.
  • the aerosol-forming substrate may comprise a total aerosol-former content that is greater than 40 percent by weight.
  • the aerosol-forming substrate may comprise a total aerosol-former content that is greater than 45 percent by weight.
  • the aerosol-forming substrate may comprise one or more aerosol formers selected from 1,3-butanediol, glycerin, 1,3-propanediol, propylene glycol, triethylene glycol, glycerol monoacetate, glycerol diacetate, glycerol triacetate, dimethyl dodecanedioate and dimethyl tetradecanedioate.
  • aerosol formers selected from 1,3-butanediol, glycerin, 1,3-propanediol, propylene glycol, triethylene glycol, glycerol monoacetate, glycerol diacetate, glycerol triacetate, dimethyl dodecanedioate and dimethyl tetradecanedioate.
  • the aerosol-forming substrate may not include tobacco.
  • the aerosol-forming substrate may further comprise nicotine.
  • the term “nicotine” is used to describe nicotine, a nicotine base or a nicotine salt.
  • the amounts of nicotine recited herein are the amount of free base nicotine or amount of protonated nicotine, respectively.
  • the aerosol-forming substrate may comprise natural nicotine, or synthetic nicotine, or a combination of natural nicotine and synthetic nicotine.
  • the aerosol-forming substrate may further comprise one or more cellulose based agents and one or more carboxylic acids selected from fumaric acid, maleic acid and malic acid.
  • the aerosol-forming substrate may have a total cellulose based agent content of at least 35 percent by weight and a total carboxylic acid content of at least 0.5 percent by weight.
  • cellulose based agent is used to describe a cellulosic substance.
  • examples of cellulose based agents include cellulose based film-forming agents, cellulose based strengthening agents and cellulose based binding agents.
  • the aerosol-forming substrate comprises a plurality of cellulose based agents consisting of a cellulose based film-forming agent, a cellulose based strengthening agent, and a cellulose based binding agent
  • total cellulose based agent content describes the combined cellulose based film-forming agent content, cellulose based strengthening agent content, and cellulose based binding agent content of the aerosol-forming substrate.
  • total carboxylic acid content is used to describe the combined content of all carboxylic acids in the aerosol-forming substrate.
  • the aerosol-forming substrate comprises a plurality of carboxylic acids consisting of benzoic acid and fumaric acid
  • total carboxylic acid content describes the combined benzoic acid content and fumaric acid content of the aerosol-forming substrate.
  • the aerosol-forming substrate may comprise water.
  • the aerosol-forming substrate may have a water content of between 5 percent by weight and 35 percent by weight.
  • film is used to describe a solid aerosol-forming substrate having a thickness that is substantially less than the width or length thereof.
  • the term “thickness” is used to describe the minimum dimension between opposite, substantially parallel surfaces of a solid aerosol-generating film.
  • an aerosol-generating article comprising an aerosol-forming substrate having a total aerosol former content greater than or equal to 30 percent by weight, and wherein the aerosol former substrate is a solid or a gel; and an aerosol-generating device.
  • the aerosol-generating device comprises: a heating chamber configured to at least partially receive the aerosol-generating article; a heating system associated with a heating element that is configured to intemally heat the aerosol-forming substrate from within the aerosol-forming substrate; a power source for providing power to the heating system; and a controller configured to control the power during heating of the aerosol-forming substrate to form an aerosol for inhalation by a user to: increase a temperature of the heating element from an initial temperature to a first temperature; and maintain the temperature of the heating element constant at the first temperature for a duration of a first predetermined time period, wherein the first temperature is between 245 and 285 degrees Celsius.
  • the first time period may have a duration of 40 seconds to 300 seconds, preferably 40 seconds to 150 seconds.
  • Controlling the power during heating of the aerosol-forming substrate to form an aerosol for inhalation by a user may further comprise adjusting the temperature of the heating element to a second temperature during a second predetermined time period, wherein the second predetermined time period may be subsequent to the first predetermined time period.
  • the second predetermined time period may be directly subsequent to the first predetermined time period.
  • the second temperature may be different to the first temperature.
  • mouthpiece refers to a portion of an aerosol-generating article, an aerosol-generating device or an aerosol-generating system that is placed into a user's mouth in order to directly inhale an aerosol.
  • Example Ex6 The method according to example Ex5, wherein the second temperature is between 190 and 220 degrees Celsius.
  • Example Ex7 The method according to one of examples Ex3 to Ex6, wherein adjusting the temperature of the heating element to the second temperature during the second time period comprises two consecutive temperature steps.
  • Example Ex8 The method according to example Ex7, wherein a temperature of a first temperature step is lower than a temperature of a second temperature step.
  • Example Ex9 The method according to example Ex3 or Ex4, wherein adjusting the temperature of the heating element to a second temperature during the second predetermined time period comprises increasing the temperature of the heating element from the first temperature.
  • Example Ex10 The method according to one of examples Ex3 to Ex9, wherein a duration of the second predetermined time period is between 100 and 280 seconds.
  • Example Ex11 The method according to one of examples Ex3 to Ex10, wherein controlling the power further comprises adjusting the temperature of the heating element to a third temperature during a third predetermined time period, wherein the third predetermined time period is subsequent to the second predetermined time period.
  • Example Ex12 The method according to example Ex11, wherein the third temperature approximately corresponds to the first temperature.
  • Example Ex13 The method according to example Ex11 or Ex12, wherein a duration of the third predetermined time period is between 30 seconds and 120 seconds.
  • Example Ex14 The method according to one examples Ex3 to Ex13, wherein the power is controlled based on a heating profile of a plurality of heating profiles, wherein each heating profile defines how to adjust the temperature of the heating element during each of the time periods.
  • Example Ex15 The method according to example Ex14, further comprising selecting the heating profile based on identifying the aerosol-generating article.
  • Example Ex16 The method according to one of examples Ex3 to Ex13 wherein the power is controlled based on a heating profile of a plurality of heating profiles, wherein each heating profile defines how to adjust the temperature of the heating element during the second time period.
  • Example Ex17 The method according to example Ex16, further comprising selecting the heating profile based on identifying the aerosol-generating article.
  • Example Ex18 The method according to one of the preceding examples, wherein the heating system comprises an induction coil configured to inductively heat the heating element.
  • Example Ex19 The method according to one of the preceding examples, wherein the method further comprises controlling the power to: during a pre-heating time period before the first predetermined time period, increasing the temperature of the heating element from an ambient temperature to the initial temperature.
  • Example Ex20 The method according to example Ex19, wherein the pre-heating time period has a duration between 10 and 20 seconds.
  • Example Ex21 The method according to one of examples Ex19 or Ex20, further comprising calibrating the heating element subsequent to the pre-heating time period and before the first predetermined time period.
  • Example Ex22 The method according to one of examples Ex1 to Ex17, wherein the heating system comprises the heating element, the heating element being a resistive heating element.
  • Example Ex23 The method according to example Ex22, wherein the method further comprises controlling the power to: during a pre-heating time period before the first predetermined time period, increasing the temperature of the heating element from an ambient temperature to the initial temperature.
  • Example Ex24 The method according to example Ex23, wherein the pre-heating time period has a duration between 10 and 20 seconds.
  • Example Ex25 The method according to one of the preceding examples, wherein the aerosol-forming substrate comprises a total aerosol-former content that is greater than 35 percent by weight.
  • Example Ex26 The method according to one of the preceding examples, wherein the aerosol-forming substrate comprises a total aerosol-former content that is greater than 40 percent by weight.
  • Example Ex27 The method according to one of the preceding examples, wherein the aerosol-forming substrate comprises a total aerosol-former content that is greater than 45 percent by weight.
  • Example Ex29 The method according to one of the preceding examples, wherein the aerosol-forming substrate does not include tobacco.
  • Example Ex31 The method according to one of the preceding examples, wherein the aerosol-forming substrate further comprises one or more cellulose based agents and one or more carboxylic acids selected from fumaric acid, maleic acid and malic acid.
  • Example Ex33 The method according to one of the preceding examples, wherein the aerosol-forming substrate comprises water.
  • Example Ex34 The method according to example Ex33, wherein the aerosol-forming substrate has a water content of between 5 percent by weight and 35 percent by weight.
  • Example Ex36 The system according to example Ex35, wherein the first time period has a duration of 40 seconds to 300 seconds, preferably 40 seconds to 150 seconds.
  • Example Ex38 The system according to example Ex37, wherein the second temperature is different to the first temperature.
  • Example Ex44 The system according to one of examples Ex37 to Ex43, wherein a duration of the second predetermined time period is between 100 and 280 seconds.
  • Example Ex47 The system according to example Ex45 or Ex46, wherein a duration of the third predetermined time period is between 30 seconds and 120 seconds.
  • Example Ex50 The system according to one of example Ex37 to Ex47, wherein the aerosol-generating device further comprises a memory configured to store a plurality of temperature profiles, wherein each heating profile defines how to adjust the temperature of the heating element during the second predetermined time period, and wherein the controller is further configured to control the power during heating of the aerosol-forming substrate to form an aerosol for inhalation by a user based on a heating profile of the plurality of temperature profiles.
  • Example Ex52 The system according to one examples Ex35 to Ex51, wherein the aerosol-forming substrate further comprises the heating element, and wherein the heating system comprises an induction coil for inductively heating the heating element.
  • Example Ex53 The system according to one of examples Ex35 to Ex52, wherein the controller is further configured to: during a pre-heating time period before the first predetermined time period, control the power to increase the temperature of the heating element from an ambient temperature to the initial temperature.
  • FIG. 7 is a graph of temperature vs. time illustrating part of a heating profile during user operation of the aerosol-generating device illustrated in FIG. 6 ;
  • the controller may adjust the temperature of the heating element to be lower than the first temperature, as shown in FIGS. 10 , 11 , 12 and 13 .
  • the first heating mode 820 , 920 , 1020 , 1120 , 1220 , 1320 heat will have spread throughout the aerosol-forming substrate. Lowering the temperature of the heating element in the second heating mode therefore enables the amount of vaporized desired volatile compounds in the aerosol inhaled by the user to remain consistent with the amount in the first heating mode 820 , 920 , 1020 , 1120 , 1220 , 1320 , thereby providing the same sensorial experience for the user.

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  • Devices For Medical Bathing And Washing (AREA)
US18/852,725 2022-04-06 2023-03-31 An aerosol-generating device and system and method for control thereof Pending US20250221464A1 (en)

Applications Claiming Priority (3)

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EP22166997.1 2022-04-06
EP22166997 2022-04-06
PCT/EP2023/058482 WO2023194232A1 (en) 2022-04-06 2023-03-31 An aerosol-generating device and system and method for control thereof

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EP (1) EP4503994A1 (https=)
JP (1) JP2025511750A (https=)
KR (1) KR20240174096A (https=)
CN (1) CN119173165A (https=)
IL (1) IL315977A (https=)
WO (1) WO2023194232A1 (https=)

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CN120019764A (zh) * 2023-11-17 2025-05-20 思摩尔国际控股有限公司 气溶胶生成装置及其加热控制方法
CN120240740A (zh) * 2024-01-03 2025-07-04 深圳麦时科技有限公司 一种加热不燃烧装置及其加热控制方法
CN120859223A (zh) * 2024-04-30 2025-10-31 尼科创业贸易有限公司 气溶胶供应装置及其加热控制方法

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MY186867A (en) * 2015-04-15 2021-08-26 Philip Morris Products Sa Device and method for controlling an electrical heater to limit temperature according to desired temperature profile over time
JP7410956B2 (ja) * 2019-01-24 2024-01-10 イノ－アイティー・カンパニー・リミテッド 電気加熱式喫煙物品内に挿入可能なゲル状エアロゾル発生基材カートリッジ、これを含む電気加熱式喫煙物品、並びに、このためのエアロゾル発生装置及びシステム
GB201917467D0 (en) * 2019-11-29 2020-01-15 Nicoventures Trading Ltd Electronic aerosol provision system
US20230270178A1 (en) * 2020-09-04 2023-08-31 Philip Morris Products S.A. Smoking device with heating profile based on puff frequency

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JP2025511750A (ja) 2025-04-16
WO2023194232A1 (en) 2023-10-12
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IL315977A (en) 2024-11-01
EP4503994A1 (en) 2025-02-12

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