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WO2025003635A1 - Dispositifs de commande de distribution d'aérosol, systèmes, procédés et dispositifs de stockage - Google Patents

Dispositifs de commande de distribution d'aérosol, systèmes, procédés et dispositifs de stockage Download PDF

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Publication number
WO2025003635A1
WO2025003635A1 PCT/GB2024/051566 GB2024051566W WO2025003635A1 WO 2025003635 A1 WO2025003635 A1 WO 2025003635A1 GB 2024051566 W GB2024051566 W GB 2024051566W WO 2025003635 A1 WO2025003635 A1 WO 2025003635A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol
aerosol generator
controller
generating material
cartridge
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/GB2024/051566
Other languages
English (en)
Inventor
Shengyang Lin
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.)
Nicoventures Trading Ltd
Original Assignee
Nicoventures Trading 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
Priority claimed from CN202310772167.9A external-priority patent/CN119184380A/zh
Application filed by Nicoventures Trading Ltd filed Critical Nicoventures Trading Ltd
Publication of WO2025003635A1 publication Critical patent/WO2025003635A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A24F40/53—Monitoring, e.g. fault detection
    • 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

Definitions

  • the present disclosure relates to aerosol delivery systems such as, but not exclusively, nicotine delivery systems (e.g. e-cigarettes). More particularly, the present disclosure relates to controllers for aerosol delivery systems and cartridges, methods for controlling such systems and cartridges, and storage devices for aerosol delivery systems and/or cartridges.
  • nicotine delivery systems e.g. e-cigarettes
  • controllers for aerosol delivery systems and cartridges methods for controlling such systems and cartridges, and storage devices for aerosol delivery systems and/or cartridges.
  • Aerosol delivery systems such as electronic cigarettes (e-cigarettes) generally contain an aerosol generating material, such as a chamber of a source solid or liquid, which may contain an active substance and / or a flavour, from which an aerosol or vapour is generated for inhalation by a user, for example through heat vaporisation.
  • an aerosol delivery system will typically comprise an aerosol generation area containing an aerosol generator, e.g. a heating element, arranged to vaporise or aerosolise a portion of precursor material to generate a vapour or aerosol in the aerosol generation area.
  • Some electronic cigarettes may also include a flavour element in the air flow path through the device to impart additional flavours.
  • Such devices may sometimes be referred to as hybrid devices, and the flavour element may, for example, include a portion of tobacco arranged in the air flow path between the aerosol generation area and the mouthpiece such that aerosol I condensation aerosol drawn through the device passes through the portion of tobacco before exiting the mouthpiece for user inhalation.
  • delivery system is intended to encompass systems that deliver at least one substance to a user in use, and includes: combustible aerosol provision systems, such as cigarettes, cigarillos, cigars, and tobacco for pipes or for roll-your-own or for make-your-own cigarettes (whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes or other smokable material); non-combustible aerosol provision systems that release compounds from an aerosolgenerating material without combusting the aerosol-generating material, such as electronic cigarettes, tobacco heating products, and hybrid systems to generate aerosol using a combination of aerosolgenerating materials; and aerosol-free delivery systems that deliver the at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or
  • the delivery system is a combustible aerosol provision system, such as a system selected from the group consisting of a cigarette, a cigarillo and a cigar.
  • the disclosure relates to a component for use in a combustible aerosol provision system, such as a filter, a filter rod, a filter segment, a tobacco rod, a spill, an aerosol-modifying agent release component such as a capsule, a thread, or a bead, or a paper such as a plug wrap, a tipping paper or a cigarette paper.
  • a “non-combustible” aerosol provision system is one where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user.
  • the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.
  • the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosolgenerating material is not a requirement.
  • the non-combustible aerosol provision system is an aerosol-generating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.
  • the non-combustible aerosol provision system may comprise a non-combustible aerosol provision device and a consumable for use with the non-combustible aerosol provision device.
  • the disclosure relates to consumables comprising aerosol-generating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.
  • the non-combustible aerosol provision system such as a non-combustible aerosol provision device thereof, may comprise a power source and a controller.
  • the power source may, for example, be an electric power source or an exothermic power source.
  • the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosol-generating material or to a heat transfer material in proximity to the exothermic power source.
  • the non-combustible aerosol provision system may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and/or an aerosol-modifying agent.
  • the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and/or an aerosol-modifying agent.
  • the delivery system is an aerosol-free delivery system that delivers at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine.
  • the substance to be delivered may be an aerosol-generating material or a material that is not intended to be aerosolised. As appropriate, either material may comprise one or more active constituents, one or more flavours, one or more aerosol-former materials, and/or one or more other functional materials.
  • the active substance may comprise one or more constituents, derivatives or extracts of cannabis, such as one or more cannabinoids or terpenes.
  • the active substance may comprise or be derived from one or more botanicals or constituents, derivatives or extracts thereof.
  • botanical includes any material derived from plants including, but not limited to, extracts, leaves, bark, fibres, stems, roots, seeds, flowers, fruits, pollen, husk, shells or the like.
  • the material may comprise an active compound naturally existing in a botanical, obtained synthetically.
  • the material may be in the form of liquid, gas, solid, powder, dust, crushed particles, granules, pellets, shreds, strips, sheets, or the like.
  • Example botanicals are tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax, ginger, ginkgo biloba, hazel, hibiscus, laurel, licorice (liquorice), matcha, mate, orange skin, papaya, rose, sage, tea such as green tea or black tea, thyme, clove, cinnamon, coffee, aniseed (anise), basil, bay leaves, cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary, saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla, Wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon
  • the mint may be chosen from the following mint varieties: Mentha Arventis, Mentha c.v., Mentha niliaca, Mentha piperita, Mentha piperita citrata c.v., Mentha piperita c.v, Mentha spicata crispa, Mentha cardifolia, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens.
  • the active substance comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is tobacco.
  • the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from eucalyptus, star anise, cocoa and hemp. In some embodiments, the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from rooibos and fennel.
  • flavour materials may include naturally occurring flavour materials, botanicals, extracts of botanicals, synthetically obtained materials, or combinations thereof (e.g., tobacco, cannabis, licorice (liquorice), hydrangea, eugenol, Japanese white bark magnolia leaf, chamomile, fenugreek, clove, maple, matcha, menthol, Japanese mint, aniseed (anise), cinnamon, turmeric, Indian spices, Asian spices, herb, Wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime, tropical fruit, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot,
  • the flavour comprises menthol, spearmint and/or peppermint.
  • the flavour comprises flavour components of cucumber, blueberry, citrus fruits and/or redberry.
  • the flavour comprises eugenol.
  • the flavour comprises flavour components extracted from tobacco.
  • the flavour comprises flavour components extracted from cannabis.
  • the flavour may comprise a sensate, which is intended to achieve a somatosensorial sensation which are usually chemically induced and perceived by the stimulation of the fifth cranial nerve (trigeminal nerve), in addition to or in place of aroma or taste nerves, and these may include agents providing heating, cooling, tingling, numbing effect.
  • a suitable heat effect agent may be, but is not limited to, vanillyl ethyl ether and a suitable cooling agent may be, but not limited to eucolyptol, WS-3.
  • Aerosol-generating material is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol-generating material may, for example, be in the form of a solid, liquid or gel which may or may not contain an active substance and/or flavourants. In some embodiments, the aerosol-generating material may comprise an “amorphous solid”, which may alternatively be referred to as a “monolithic solid” (i.e. non-fibrous). In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it. In some embodiments, the aerosol-generating material may for example comprise from about 50wt%, 60wt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or 100wt% of amorphous solid.
  • the aerosol-former material may comprise one or more constituents capable of forming an aerosol.
  • the aerosol-former material may comprise one or more of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1 ,3-butylene glycol, erythritol, meso- Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.
  • the one or more other functional materials may comprise one or more of pH regulators, colouring agents, preservatives, binders, fillers, stabilizers, and/or antioxidants.
  • the material may be present on or in a support, to form a substrate.
  • the support may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy.
  • the support comprises a susceptor.
  • the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on one or either side of the material.
  • a consumable is an article comprising or consisting of aerosol-generating material, part or all of which is intended to be consumed during use by a user.
  • a consumable may comprise one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and/or an aerosol-modifying agent.
  • a consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol-generating material to generate aerosol in use.
  • the heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.
  • a susceptor is a material that is heatable by penetration with a varying magnetic field, such as an alternating magnetic field.
  • the susceptor may be an electrically-conductive material, so that penetration thereof with a varying magnetic field causes induction heating of the heating material.
  • the heating material may be magnetic material, so that penetration thereof with a varying magnetic field causes magnetic hysteresis heating of the heating material.
  • the susceptor may be both electrically-conductive and magnetic, so that the susceptor is heatable by both heating mechanisms.
  • the device that is configured to generate the varying magnetic field is referred to as a magnetic field generator, herein.
  • An aerosol-modifying agent is a substance, typically located downstream of the aerosol generation area, that is configured to modify the aerosol generated, for example by changing the taste, flavour, acidity or another characteristic of the aerosol.
  • the aerosol-modifying agent may be provided in an aerosol-modifying agent release component, that is operable to selectively release the aerosolmodifying agent.
  • the aerosol-modifying agent may, for example, be an additive or a sorbent.
  • the aerosol-modifying agent may, for example, comprise one or more of a flavourant, a colourant, water, and a carbon adsorbent.
  • the aerosol-modifying agent may, for example, be a solid, a liquid, or a gel.
  • the aerosol-modifying agent may be in powder, thread or granule form.
  • the aerosol-modifying agent may be free from filtration material. Aerosol generator
  • An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosolgenerating material.
  • the aerosol generator is a heater configured to subject the aerosol-generating material to heat energy, so as to release one or more volatiles from the aerosol-generating material to form an aerosol.
  • the aerosol generator is configured to cause an aerosol to be generated from the aerosol-generating material without heating.
  • the aerosol generator may be configured to subject the aerosol-generating material to one or more of vibration, increased pressure, or electrostatic energy.
  • aerosol delivery systems (which may also be referred to as vapour delivery systems) such as nebulisers or e-cigarettes.
  • e- cigarette or “electronic cigarette” may sometimes be used, but it will be appreciated this term may be used interchangeably with aerosol delivery system I device and electronic aerosol delivery system I device.
  • aerosol delivery systems such as nebulisers or e-cigarettes.
  • vapour delivery systems such as nebulisers or e-cigarettes.
  • e- cigarette or “electronic cigarette” may sometimes be used, but it will be appreciated this term may be used interchangeably with aerosol delivery system I device and electronic aerosol delivery system I device.
  • aerosol and vapour and related terms such as “vaporise”, “volatilise” and “aerosolise” may generally be used interchangeably.
  • Aerosol delivery systems e-cigarettes
  • a modular assembly comprising a reusable device part and a replaceable (disposable/consumable) cartridge part.
  • the replaceable cartridge part will comprise the aerosol generating material and the vaporiser (which may collectively be called a ‘cartomizer’) and the reusable device part will comprise the power supply (e.g. rechargeable power source) and control circuitry.
  • the reusable device part will often comprise a user interface for receiving user input and displaying operating status characteristics
  • the replaceable cartridge device part in some cases comprises a temperature sensor for helping to control temperature.
  • Cartridges are electrically and mechanically coupled to the control unit for use, for example using a screw thread, bayonet, or magnetic coupling with appropriately arranged electrical contacts.
  • the cartridge may be removed from the reusable part and a replacement cartridge attached in its place.
  • Systems and devices conforming to this type of two-part modular configuration may generally be referred to as two-part systems/devices.
  • certain embodiments of the disclosure are based on aerosol delivery systems which are operationally configured to provide functionality in accordance with the principles described herein and the constructional aspects of systems configured to provide the functionality in accordance with certain embodiments of the disclosure is not of primary significance.
  • the present invention provides a controller for managing leakage of liquid aerosol-generating material from a cartridge or aerosol delivery system comprising an aerosol generator, the controller configured to: monitor and/or estimate a saturation level of the aerosol generator with liquid aerosol-generating material; and responsive to the monitored and/or estimated saturation level, activate the aerosol generator temporarily, to accelerate evaporation of aerosol-generating material in the aerosol generator and reduce the saturation level.
  • the invention further provides a method of controlling an aerosol generator, comprising monitoring and/or estimating a saturation level of the aerosol generator with liquid aerosol-generating material; and responsive to the monitored and/or estimated saturation level, activating the aerosol generator temporarily, to accelerate evaporation of aerosol-generating material in the aerosol generator and reduce the saturation level.
  • the claimed invention generally provides a sub-assembly or sub-system suitable for use in an aerosol delivery system, or configured for use in an aerosol delivery system.
  • the sub-system may generally form part of an aerosol delivery system and in particular may form part of the reusable device and/or the consumable cartridge.
  • the inventors have identified that leakage of aerosol generating material from a cartridge or aerosol delivery system comprising an aerosol generator is particularly problematic if the cartridge/system has not been used for a while.
  • the present invention provides a controller, an aerosol delivery system, a storage device and a method for controlling an aerosol generator to mitigate leakage by minimising and/or preventing saturation of the aerosol generator with aerosol-generating material.
  • the claimed invention thus provides numerous benefits, particularly enabling users to switch between cartridges and systems without risking leakage, and not being forced to empty one cartridge/system before utilising another due to concerns of leakage. Reducing leakage further reduces waste and contamination/pollution of other products by leakage.
  • Figure 1 is a schematic cross-section view of an aerosol delivery system in accordance with some embodiments of the disclosure
  • Figures 2a and 2b are schematic cross-section views of aerosol delivery systems illustrating the problem addressed herein;
  • Figure 3 is a schematic flow diagram illustrating a process in accordance with some embodiments of the disclosure.
  • FIGS. 4a to 4e are schematic views of a storage device in accordance with some embodiments of the disclosure.
  • Figure 1 is a cross-sectional view through an example aerosol delivery system 1 in accordance with certain embodiments of the disclosure, providing an introduction to two-part aerosol delivery systems, the components therein and their functionality.
  • the aerosol delivery system 1 comprises two main parts, namely a reusable part 2 and a replaceable I disposable consumable cartridge part 4.
  • the reusable part 2 and the cartridge part 4 are releasably coupled together at an interface 6.
  • the cartridge part 4 may be removed from the reusable part 2 and a replacement cartridge part 4 attached to the reusable part 2 in its place.
  • the interface 6 provides a structural, electrical and airflow path connection between the two parts 2, 4 and may be established in accordance with conventional techniques, for example based around a screw thread, magnetic or bayonet fixing with appropriately arranged electrical contacts and openings for establishing the electrical connection and airflow path between the two parts 2, 4 as appropriate.
  • the cartridge part 4 mechanically mounts to the reusable part 2 is not significant to the principles described herein, but for the sake of a concrete example is assumed here to comprise a magnetic coupling (not represented in figure 1). It will also be appreciated the interface 6 in some implementations may not support an electrical and / or airflow path connection between the respective parts 2, 4.
  • an aerosol generator may be provided in the reusable part 2 rather than in the cartridge part 4, or the transfer of electrical power from the reusable part 2 to the cartridge part 4 may be wireless (e.g. based on electromagnetic induction), so that an electrical connection between the reusable part 2 and the cartridge part 4 is not needed.
  • the airflow through the electronic cigarette might not go through the reusable part 2, so that an airflow path connection between the reusable part 2 and the cartridge part 4 is not needed.
  • a portion of the airflow path may be defined at the interface between portions of the reusable part 2 and cartridge part 4 when these are coupled together for use.
  • the cartridge I consumable part 4 may, in certain embodiments, be broadly conventional.
  • the cartridge part 4 comprises a cartridge housing 42 formed of a plastics material.
  • the cartridge housing 42 supports other components of the cartridge part 4 and provides the mechanical interface 6 with the reusable part 2.
  • the cartridge housing 42 is generally circularly symmetrical about a longitudinal axis along which the cartridge part 4 couples to the reusable part 2.
  • the cartridge part 4 has a length of around 4 cm and a diameter of around 1 .5 cm.
  • the specific geometry and the overall shapes and materials used may vary.
  • the reservoir 44 stores a supply of liquid aerosol generating material.
  • the liquid reservoir 44 has an annular shape with an outer wall defined by the cartridge housing 42 and an inner wall that defines an airflow path 52 through the cartridge part 4.
  • the reservoir 44 is closed at each end with end walls to contain the aerosol generating material.
  • the reservoir 44 may be formed in accordance with conventional techniques, for example it may comprise a plastics material and be integrally moulded with the cartridge housing 42.
  • the cartridge I consumable part 4 further comprises an aerosol generator 48 located towards an end of the reservoir 44 opposite to a mouthpiece outlet 50.
  • the aerosol generator 48 may be in either of the reusable part 2 or the cartridge part 4.
  • the aerosol generator 48 e.g. a heater, which may be in the form of a wick and coil arrangement as shown, a distiller, which may be formed from a sintered metal fibre material or other porous conducting material, or any suitable alternative aerosol generator
  • the aerosol generator 48 may be comprised in the reusable part 2, and is brought into proximity with a portion of aerosol generating material in the cartridge part 4 when the cartridge part 4 is engaged with the reusable part 2.
  • the cartridge part 4 may comprise a portion of aerosol generating material, and an aerosol generator 48 comprising a heater is at least partially inserted into or at least partially surrounds the portion of aerosol generating material as the cartridge part 4 is engaged with the reusable part 2.
  • a wick 46 in contact with the aerosol generator 48 extends transversely across the cartridge airflow path 52 with its ends extending into the reservoir 44 of the liquid aerosol generating material through openings in the inner wall of the reservoir 44.
  • the openings in the inner wall of the reservoir 44 are sized to broadly match the dimensions of the wick 46 to provide a reasonable seal against leakage from the liquid reservoir 44 into the cartridge airflow path without unduly compressing the wick 46, which may be detrimental to its fluid transfer performance.
  • the wick 46 and aerosol generator 48 are arranged in the cartridge airflow path 52 such that a region of the cartridge airflow path 52 around the wick 46 and heater 48 in effect defines a vaporisation region for the cartridge part 4.
  • Aerosol generating material in the reservoir 44 infiltrates the wick 46 through the ends of the wick extending into the reservoir 44 and is drawn along the wick by surface tension I capillary action (i.e. wicking).
  • the aerosol generator 48 in this example comprises an electrically resistive wire coiled around the wick 46.
  • the heater 48 comprises a nickel chrome alloy (Cr20Ni80) wire and the wick 46 comprises a glass fibre bundle, but the specific aerosol generator configuration is not significant to the principles described herein.
  • electrical power may be supplied to the aerosol generator 48 to vaporise an amount of aerosol generating material (aerosol generating material) drawn to the vicinity of the aerosol generator 48 by the wick 46.
  • Vaporised aerosol generating material may then become entrained in air drawn along the cartridge airflow path from the vaporisation region towards the mouthpiece outlet 50 for user inhalation.
  • the rate at which aerosol generating material is vaporised by the aerosol generator 48 will depend on the amount (level) of power supplied to the aerosol generator 48.
  • electrical power can be applied to the aerosol generator 48 to selectively generate aerosol from the aerosol generating material in the cartridge part 4, and furthermore, the rate of aerosol generation can be changed by changing the amount of power supplied to the aerosol generator 48, for example through pulse width and/or frequency modulation techniques.
  • the outer housing 12 may be formed, for example, from a plastics or metallic material and in this example has a circular cross section generally conforming to the shape and size of the cartridge part 4 so as to provide a smooth transition between the two parts 2, 4 at the interface 6.
  • the reusable part 2 has a length of around 8 cm so the overall length of the e-cigarette when the cartridge part 4 and the reusable part 2 are coupled together is around 12 cm.
  • first and/or second user input buttons 14, 16 may be provided, which in this example are conventional mechanical buttons, for example comprising a spring mounted component which may be pressed by a user to establish an electrical contact.
  • the input buttons may be considered input devices for detecting user input and the specific manner in which the buttons are implemented is not significant.
  • the buttons may be assigned to functions such as switching the aerosol delivery system 1 on and off, and adjusting user settings such as a power to be supplied from the power source 26 to the aerosol generator 48.
  • a display 24 may be provided to give a user with a visual indication of various characteristics associated with the aerosol delivery system, for example current power setting information, remaining power source power, and so forth.
  • the display may be implemented in various ways.
  • the display 24 comprises a conventional pixilated LCD screen that may be driven to display the desired information in accordance with conventional techniques.
  • the display may comprise one or more discrete indicators, for example LEDs, that are arranged to display the desired information, for example through particular colours and I or flash sequences. More generally, the manner in which the display 24 is provided and information is displayed to a user using the display is not significant to the principles described herein.
  • some embodiments may not include a visual display and/or may include other means for providing a user with information relating to operating characteristics of the aerosol delivery system, for example using audio signalling, or may not include any means for providing a user with information relating to operating characteristics of the aerosol delivery system.
  • a controller 22 is suitably configured I programmed to control the operation of the aerosol delivery system 1 to provide functionality as described herein, as well as for providing conventional operating functions of the aerosol delivery system 1 .
  • the controller (processor circuitry) 22 may be considered to logically comprise various sub-units I circuitry elements associated with different aspects of the operation of the aerosol delivery system 1 .
  • the controller 22 comprises power supply control circuitry for controlling the supply of power from the power source 26 to the aerosol generator 48 in response to user input, user programming circuitry 20 for establishing configuration settings (e.g. user-defined power settings) in response to user input, as well as other functional units / circuitry associated functionality in accordance with the principles described herein and conventional operating aspects of electronic cigarettes, such as display driving circuitry and user input detection circuitry.
  • the functionality of the controller 22 can be provided in various different ways, for example using one or more suitably programmed programmable computer(s) and I or one or more suitably configured application-specific integrated circuits) I circuitry I chip(s) I chipset
  • the controller 22 may be configured to manage leakage of liquid aerosol-generating material from a cartridge or aerosol delivery system comprising an aerosol generator 48, as is described further below with respect to figures 2-4.
  • the controller 22 may be part of the reusable part 2 and/or the replaceable I disposable consumable cartridge part 4.
  • the controller 22 may comprise an application specific integrated circuit (ASIC) or microcontroller, for controlling the aerosol delivery device.
  • the microcontroller or ASIC may include a CPU or microprocessor.
  • the operations of a CPU and other electronic components are generally controlled at least in part by software programs running on the CPU (or other component).
  • software programs may be stored in non-volatile memory, such as ROM, which can be integrated into the microcontroller itself, or provided as a separate component.
  • the CPU may access the ROM to load and execute individual software programs as and when required.
  • the reusable part 2 comprises an airflow sensor 30 which is electrically connected to the controller 22.
  • the airflow sensor 30 comprises a so-called “puff sensor”, in that the airflow sensor 30 is used to detect when a user is puffing on the device.
  • the airflow sensor 30 comprises a switch in an electrical path providing electrical power from the power source 26 to the aerosol generator 48.
  • the airflow sensor 30 generally comprises a pressure sensor configured to close the switch when subjected to a particular range of pressures, enabling current to flow from the power source 26 to the aerosol generator 48 once the pressure in the vicinity of the airflow sensor 30 drops below a threshold value.
  • the airflow sensor 30 is mounted to a printed circuit board (PCB) 31 , but this is not essential.
  • the airflow sensor 30 may comprise any sensor which is configured to determine a characteristic of airflow in an airflow path 51 disposed between air inlet 28 and mouthpiece opening 50, for example a pressure sensor or transducer (for example a membrane or solid-state pressure sensor), a combined temperature and pressure sensor, or a microphone (for example an electret-type microphone), which is sensitive to changes in air pressure, including acoustical signals.
  • the airflow sensor 30 is situated within a sensor cavity or chamber 32, which comprises the interior space defined by one or more chamber walls 34.
  • the sensor cavity 32 comprises a region internal to one or more chamber walls 34 in which an airflow sensor 30 can be fully or partially situated.
  • the PCB 31 comprises one of the chamber walls of a sensor housing comprising the sensor chamber I cavity 32.
  • a deformable membrane is disposed across an opening communicating between the sensor cavity 32 containing the sensor 30, and a portion of the airflow path disposed between air inlet 28 and mouthpiece opening 50.
  • the deformable membrane covers the opening, and is attached to one or more of the chamber walls according to approaches described further herein.
  • the aerosol delivery system 1 comprises communication circuitry configured to enable a connection to be established with one or more further electronic devices (for example, a storage I charging case, and / or a refill I charging dock) to enable data transfer between the aerosol delivery system 1 and further electronic device(s).
  • the communication circuitry is integrated into controller 22, and in others it is implemented separately.
  • the communication circuitry may comprise a separate module to the controller 22 which, while connected to controller 22, provides dedicated data transfer functionality for the aerosol delivery device.
  • the communication circuitry is configured to support communication between the aerosol delivery system 1 and one or more further electronic devices over a wireless interface.
  • the controller 22, other components within the system 1 and other devices/systems may comprise one or more processors and data processing steps may be performed on any of these processors or on a remote processor, the data communicated by wire or wirelessly.
  • the system 1 of figure 2a comprises an aerosol generator 48 in the form of a distiller, whilst the system 1 of figure 2b comprises a wick and coil arrangement. Both aerosol generator arrangements receive aerosol generating material from the reservoir 44, which is then vaporised by heating.
  • aerosol-generating material can leak from the system 1 , leading to waste and mess.
  • the process involves identifying and/or estimating when the aerosol generator 48 is or might be becoming saturated (approaching saturation), and then activating the aerosol generator 48 temporarily, to accelerate evaporation of aerosol-generating material in the aerosol generator 48, reducing the saturation level of the aerosol generator 48 with the aerosolgenerating material.
  • the process is preferably a cyclic process as shown in figure 3, involving monitoring and/or estimating a saturation level of the aerosol generator with liquid aerosol-generating material and then responsive to the monitored and/or estimated saturation level, e.g. when the monitored and/or estimated saturation level exceeds a threshold, activating the aerosol generator temporarily.
  • the monitoring and/or estimating of the saturation level may be performed cyclically/repeatedly, e.g. periodically at regular intervals e.g. every 30 minutes, 60 minutes or 120 minutes, substantially continuously, e.g. every minute, or irregularly, such as when triggered manually by a user or sensor input.
  • the monitoring and/or estimating of the saturation level may be performed using any suitable method. Monitoring typically involves measuring (observing or checking) the saturation level, whilst estimating typically involves approximately calculating or predicting the saturation level. Monitoring and estimating may be combined, e.g. first taking a measurement and then subsequently making an estimation following the measurement, e.g. based on a model, which may be simplified, or vice versa. Any combination of monitoring and estimating may be used.
  • monitoring and/or estimating the saturation level of the aerosol generator may based on one or more of: a) a mass of the aerosol generator; and/or b) a time since last activation of the aerosol generator; and/or c) a temperature of the aerosol generator; and/or d) a resistance of the aerosol generator; and/or e) humidity in or proximal to the aerosol generator; and/or f) detecting leakage of aerosol-generating material.
  • the saturation level of the aerosol generator 48 may be determined (measured) directly, for example by measuring a mass (or weight) of the aerosol generator 48. As the aerosol generator 48 absorbs the aerosol-generating material, it becomes heavier, and thus the level of saturation can be determined by measuring the relative change in weight of the aerosol generator 48. By determining a maximum saturation weight of the aerosol generator 48 (e.g. via experimentation prior to assembly), the measured weight of the aerosol generator 48 in use can be compared to the maximum saturation level weight to provide a saturation level as a percentage (relative saturation).
  • Suitable arrangements for weighing aerosol generators include micro weighing solutions and strain gauges. Whilst such direct measurements are possible, they are comparatively expensive in componentry and computationally, and relatively complicated to implement. Accordingly, various other, simpler methods for monitoring and/or estimating the saturation level of the aerosol generator are also considered.
  • the monitoring and/or estimating of the saturation level of the aerosol generator 48 is based on a time since last activation of the aerosol generator 48.
  • the controller 22 for the cartridge/system may be configured to track when the aerosol generator 48 was last used (e.g. by timestamp or a timer) and then assume or determine when the aerosol generator 48 will likely be saturated, based on an elapsed time since the aerosol generator 48 was last used. This arrangement would not necessarily require any additional hardware compared to existing cartridges/systems, thus minimising costs.
  • the elapsed time to likely saturation depends on a number of parameters, including those impacting the evaporation rate, which generally include the type/properties of the aerosol generator 48 (e.g. area of the interface between ambient air and the aerosol-generating material), the type/properties of the aerosol-generating material (e.g. temperature at the interface, viscosity, volatility) and environmental parameters (e.g. temperature and humidity of ambient air and its flow rate through the aerosol generator).
  • a suitable elapsed time period would be in the range of a few hours to a few days, e.g. 1 - 72 hours.
  • Suitable / tailored time periods can be determined by experimentation and the controller may determine the elapsed time (or make adjustments to a default) based on one or more of these parameters.
  • the controller 22 may assume that the aerosol generator 48 will be saturated after an elapsed time since last activation and so then activate the aerosol generator 48 temporarily after the elapsed time, to reduce the saturation level. Accordingly, in its simplest form, the process may involve activating the aerosol generator 48 periodically, at regular or irregular (variable) intervals, e.g. every 3-12 hours. The exact interval and other parameters such as activation duration may vary depending e.g. on environmental parameters, as discussed further below.
  • the controller 22 may measure the current saturation level at this time and then, if the measurement exceeds a threshold, activate the aerosol generator 48 temporarily, to reduce the saturation level, or if the measurement does not exceed the threshold, then estimate when the aerosol generator 48 will likely be saturated based on the latest measurement, and schedule to activate the aerosol generator 48 temporarily at that time, or repeat the measurement process and threshold comparison steps at that time.
  • the monitoring and/or estimating of the saturation level is based on a temperature of the aerosol generator 48, e.g. as sensed by a temperature sensor, or based on a resistance of the aerosol generator 48.
  • the elapsed time may be calculated from when the aerosol generator 48 reached a threshold operating temperature, to more accurately indicate when the evaporation rate of the aerosolgenerating material will slow and thus the aerosol generator 48 becomes saturated. In contrast to the first embodiment, this will filter out any puffing by the user where the aerosol generator 48 did not reach the normal operating temperature, thus errs more on the side of caution in predicting saturation and hence leakage.
  • the controller 22 may assume that the aerosol generator 48 is saturated and so activate the aerosol generator 48 temporarily, to reduce the saturation level.
  • the controller 22 may measure the current saturation level or (preferably) the temperature of the aerosol generator 48 at this time, and if the measurement exceeds a threshold (e.g. the aerosol generator has cooled back down to ambient, or cooled to ambient within a threshold), then activate the aerosol generator 48 temporarily, to reduce the saturation level, or if the measurement does not exceed the threshold, then estimate when the aerosol generator 48 will likely be saturated based on the latest measurement and schedule to activate the aerosol generator 48 temporarily at that time, or repeat the measurement process and threshold comparison steps at that time.
  • a threshold e.g. the aerosol generator has cooled back down to ambient, or cooled to ambient within a threshold
  • the monitoring and/or estimating of the saturation level is based on a humidity in or proximal to the aerosol generator 48.
  • the humidity of air in the aerosol generator 48 (more specifically, at the interface between air and the aerosol-generating material) is one environmental parameter impacting the rate of evaporation of the aerosol-generating material from the aerosol generator 48.
  • high humidity of air in the aerosol generator 48 may generally be associated with low saturation of the aerosol generator 48, since this generally suggests that evaporation has/is occurring, which prevents the aerosol generator 48 becoming saturated.
  • low humidity of air in the aerosol generator 48 may indicate that evaporation is occurring slowly, and thus may indicate that the aerosol generator 48 is already or is becoming saturated.
  • monitoring and/or estimation based on humidity is often used in combination with other methods.
  • ‘high’ and ‘low’ humidity vary depending on numerous factors, including those outlined above for evaporation rates, and may be determined for a given aerosol delivery system by experimentation, but in general, ‘high’ humidity may be considered to be at or above 80%, 85%, 90% or 95%, whilst low humidity may be at or below 30%, 25%, 20%, 15%, 10% or 5%.
  • humidity may be measured and/or estimated.
  • Humidity may be measured using a humidity sensor (hygrometer) or estimated using a model, e.g. assuming that the aerosol generator 48 is operating under normal operating conditions, the operating humidity may be known from experimentation (e.g. 95%) and the change in humidity overtime after can be modelled based on experimentation, optionally factoring environmental parameters which may be measured by using one or more sensors.
  • the monitoring and/or estimating of the saturation level is based on detecting leakage of aerosol-generating material. Such leakage indicates that the aerosol generator 48 has become saturated and thus, in response, the aerosol generator 48 should be activated temporarily, to accelerate evaporation of aerosol-generating material in the aerosol generator 48 and reduce the saturation level.
  • the cartridge/system may comprise a leak detector element, which may be in the form of a pad underneath the aerosol generator 48, to capture any leaks.
  • the controller 22 may be configured to measure a parameter of the leak detector pad using a sensor which indicates if any aerosol-generating material has leaked into/onto the leak detector element.
  • the controller 22 is configured to measure a resistance of the leak detector pad and associate any changes from a default resistance (beyond a margin of error) with leakage, and to activate the aerosol generator 48 temporarily, to reduce the saturation level.
  • the leak detector pad may be divided into multiple zones and a resistance measurement taken for each zone to detect a location of the leak. Some zones might not be associated with leaks from the aerosol generator 48 (but instead e.g. from the reservoir or mouthpiece) and thus might not trigger the saturation level response.
  • individual zones/generators may be activated (heated) as a leak is detected in that zone, to minimise power consumption.
  • This identification may be performed by any suitable means, for example by automatic data communication between the cartridge/system and controller 22 upon connection of the cartridge with the controller 22 (e.g. the controller 22 may be configured to read data stored in memory on the cartridge), by the controller 22 receiving an input from a user interface (e.g. via user input buttons), or by the controller 22 receiving an input from a sensor (such as a camera) configured to identify the cartridge from an identifier (such as a barcode).
  • a sensor such as a camera
  • the activation of the aerosol generator 48 is temporary, to accelerate evaporation of aerosol-generating material in the aerosol generator and reduce the saturation level.
  • the process involves:
  • the process further involves monitoring and/or estimating substantial depletion of the aerosol-generating material and indicating substantial depletion of the aerosol-generating material to a user.
  • the described process/controller for managing leakage of liquid aerosol-generating material from a cartridge or aerosol delivery system beneficially reduces leakage
  • the temporary activation of the aerosol generator 48 draws power and evaporates a small quantity of the aerosolgenerating material. Accordingly, over time, this will deplete the reservoir of aerosol-generating material, and thus the cartridge needs to be replaced/refilled.
  • Substantial depletion of the aerosol-generating material may be determined by monitoring the temperature (or resistance) of the aerosol generator 48 in normal use. If the reservoir is depleted, then there will be no further supply to the aerosol generator 48 and so the operating temperature of the aerosol generator 48 will increase beyond its usual limits, e.g. because the heat is not being transferred to aerosol-generating material and/or there is reduced evaporation of aerosol-generating material, which normally reduces the operating temperature of the aerosol generator 48.
  • Figure 4a illustrates a storage device 100 comprising a housing 110 and a lid 120.
  • the housing 110 is configured to receive one or multiple cartridge(s) or aerosol delivery system(s) 1 comprising a reservoir of liquid aerosol-generating material and an aerosol generator 48.
  • Any combination of the storage device 100, the cartridges and/or the aerosol delivery systems 1 may comprise a controller 22, 122 configured to perform the steps outlined above for managing leakage of liquid aerosolgenerating material.
  • Figure 4b illustrates the front of the device 100 and shows that the device 100 may comprise one or more receptacles 130 for receiving the cartridges and/or the aerosol delivery systems.
  • these receptacles 130 comprise a securement mechanism for releasably securing the cartridge(s) or aerosol delivery system(s) thereto.
  • the securement mechanism comprises one or more magnetic or ferromagnetic materials for magnetically securing to the cartridge(s) or aerosol delivery system(s), providing secure but convenient releasable storage.
  • Figure 4b also shows that the device 100 (e.g. the lid 120 and/or the housing 110) may comprise an absorbent and/or adsorbent material 140 for absorbing and/or adsorbing aerosol-generating material and/or odours released from the cartridge(s) or aerosol delivery system(s) when the aerosol generators 48 within are activated temporarily and generate vapour.
  • the absorbent and/or adsorbent material 140 may be user-replaceable.
  • Preferred materials for the adsorbent material 140 include activated carbon.
  • the device 100 may also comprise a heater 150, configured to heat the absorbent and/or adsorbent material 140, to dry out the material 140.
  • Figure 4c illustrates the back of the device 100 and shows that the device 100 may further comprise a power supply 126, e.g. in the form of a rechargeable battery, for supplying power to the aerosol generators) in the cartridge(s) or aerosol delivery system(s) within the device 100.
  • a power supply 126 e.g. in the form of a rechargeable battery
  • the power supply 126 may also be configured to recharge any power supplies 26 in the individual aerosol delivery systems 1 .
  • Figure 4c further shows a controller 122 which may be configured to manage leakage of liquid aerosol-generating material from the cartridge(s) or aerosol delivery system(s) in the device 100 in accordance with the above examples, and/or to control the heater 150.
  • Figure 4c also shows a charging port 160 (e.g. a USB type-C interface) for recharging the power supply 126.
  • a charging port 160 e.g. a USB type-C interface
  • Figure 4d illustrates a first side of the device 100 comprising a user interface (Ul) 170 to provide information to the user.
  • the Ul 170 comprises three battery life indicators 170a, one for each power supply 26 in the cartridge(s) or aerosol delivery system(s) in the device 100, and one for the device 100 itself.
  • the power supply 126 and/or the charging port 160 may be operable to recharge the power supplies 26 of the cartridge(s) or aerosol delivery system(s) in the device 100.
  • Figure 4e illustrates a second side of the device 100, comprising a further user interface (Ul) having two status indicators 170b, one for each of the cartridge(s) or aerosol delivery system(s) in the device 100, e.g. to indicate a volume or substantial depletion of aerosol-generating material remaining in the cartridge(s) or system(s) in the device 100.
  • These may be configured to illuminate when the device 100 identifies that the volume of aerosol-generating material therein has been substantially depleted (emptied), and thus needs refilling, or can be disposed of.
  • Various embodiments of the invention may suitably comprise, consist of, or consist essentially of, appropriate combinations of the disclosed elements, components, features, parts, steps, means, etc., other than those specifically described herein.
  • this disclosure may include other inventions not presently claimed, but which may be claimed in future. Protection may also be sought for any features disclosed in any one or more published documents referenced herein in combination with the present disclosure.
  • buttons user programming circuitry controller display power source air inlet airflow sensor printed circuit board (PCB) sensor cavity or chamber chamber wall cartridge housing chamber or reservoir wick aerosol generator mouthpiece outlet airflow path through reusable part airflow path through cartridge 0 storage device 0 housing 0 lid 2 storage device controller 6 storage device power supply 0 receptacle 0 absorbent and/or adsorbent material0 heater 0 charging port 0 user interface
  • PCB printed circuit board

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  • Medicinal Preparation (AREA)

Abstract

L'invention concerne un dispositif de commande pour gérer une fuite de matériau de génération d'aérosol liquide d'une cartouche ou d'un système de distribution d'aérosol comprenant un générateur d'aérosol, le dispositif de commande étant conçu pour surveiller et/ou estimer un niveau de saturation du générateur d'aérosol avec un matériau de génération d'aérosol liquide ; et en réponse au niveau de saturation surveillé et/ou estimé, activer le générateur d'aérosol temporairement, pour accélérer l'évaporation du matériau de génération d'aérosol dans le générateur d'aérosol et réduire le niveau de saturation.
PCT/GB2024/051566 2023-06-27 2024-06-20 Dispositifs de commande de distribution d'aérosol, systèmes, procédés et dispositifs de stockage Pending WO2025003635A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202310772167.9A CN119184380A (zh) 2023-06-27 2023-06-27 气溶胶输送控制器、系统、方法和储存装置
CN202310772167.9 2023-06-27
GBGB2310916.8A GB202310916D0 (en) 2023-06-27 2023-07-17 Aerosol delivery controllers, systems, methods and storage devices
GB2310916.8 2023-07-17

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3282871A1 (fr) 2015-04-15 2018-02-21 Philip Morris Products S.a.s. Dispositif et procédé de commande d'un dispositif de chauffage électrique pour limiter la température selon un profil de température souhaité dans le temps
US20190223502A1 (en) * 2018-01-22 2019-07-25 Changzhou Patent Electronic Technology Co., LTD Control method of electronic cigarette and electronic cigarette thereof
US20190372368A1 (en) * 2018-06-05 2019-12-05 Ryan Robert Eckerson Storage and charging station for a vaping device
WO2021133851A1 (fr) * 2019-12-23 2021-07-01 Pax Labs, Inc. Cartouche de vaporisateur
US20220408839A1 (en) * 2019-10-25 2022-12-29 Jt International Sa Electronic Cigarette Device with Heater Control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3282871A1 (fr) 2015-04-15 2018-02-21 Philip Morris Products S.a.s. Dispositif et procédé de commande d'un dispositif de chauffage électrique pour limiter la température selon un profil de température souhaité dans le temps
US20190223502A1 (en) * 2018-01-22 2019-07-25 Changzhou Patent Electronic Technology Co., LTD Control method of electronic cigarette and electronic cigarette thereof
US20190372368A1 (en) * 2018-06-05 2019-12-05 Ryan Robert Eckerson Storage and charging station for a vaping device
US20220408839A1 (en) * 2019-10-25 2022-12-29 Jt International Sa Electronic Cigarette Device with Heater Control
WO2021133851A1 (fr) * 2019-12-23 2021-07-01 Pax Labs, Inc. Cartouche de vaporisateur

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