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EP4527216A1 - Système de chauffage et appareil de génération d'aérosol - Google Patents

Système de chauffage et appareil de génération d'aérosol Download PDF

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Publication number
EP4527216A1
EP4527216A1 EP23198839.5A EP23198839A EP4527216A1 EP 4527216 A1 EP4527216 A1 EP 4527216A1 EP 23198839 A EP23198839 A EP 23198839A EP 4527216 A1 EP4527216 A1 EP 4527216A1
Authority
EP
European Patent Office
Prior art keywords
heating
consumable
section
sections
thermally insulating
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
EP23198839.5A
Other languages
German (de)
English (en)
Inventor
designation of the inventor has not yet been filed The
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.)
Imperial Tobacco Group Ltd
Original Assignee
Imperial Tobacco Ltd Great Britain
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 Imperial Tobacco Ltd Great Britain filed Critical Imperial Tobacco Ltd Great Britain
Priority to EP23198839.5A priority Critical patent/EP4527216A1/fr
Priority to PCT/EP2024/075632 priority patent/WO2025061587A1/fr
Publication of EP4527216A1 publication Critical patent/EP4527216A1/fr
Pending legal-status Critical Current

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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
    • A24F40/40—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
    • A24F40/50—Control or monitoring
    • 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
    • A24F40/70—Manufacture
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • 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

Definitions

  • a typical aerosol generating apparatus may comprise a power supply, an aerosol generating unit that is driven by the power supply, an aerosol precursor, which in use is aerosolised by the aerosol generating unit to generate an aerosol, and a delivery system for delivery of the aerosol to a user.
  • a drawback with known aerosol generating apparatuses is that a sensory effect for the user may diminish over the extended use of a consumable.
  • the present disclosure provides a heating system for an aerosol generating apparatus for heating a consumable that comprises a plurality of heating sections and a plurality of thermally insulating barriers, wherein the heating sections and the thermally insulating barriers are alternatingly arranged.
  • the plurality of heating sections may be arranged to heat a consumable in a unique radial section along the longitudinal extension of the consumable, and the plurality of heating sections and the plurality of thermally insulating barriers may form a cavity having a uniform inner surface for accommodating a consumable.
  • the present disclosure further provides an aerosol generating apparatus comprising a heating system according to the present disclosure.
  • each heating section may be arranged to independently heat a unique radial section of a consumable inserted in the cavity, and more than one heating section may be activated during a particular smoking cycle.
  • the present disclosure further provides a use of heating system according to the present disclosure for heating a consumable in an aerosol generating apparatus.
  • the present disclosure still further provides a method of manufacturing a heating system, wherein the heating system is manufactured as an integral element by the steps of providing and/or positioning the heating sections and performing a moulding step.
  • the moulding step comprises moulding the thermally insulating barriers so that a heating section of the plurality of heating sections is form-fittingly received between two thermally insulating barriers.
  • the present disclosure still further provides a method of manufacturing a heating system, wherein the heating system is manufactured as an integral element by the steps of providing and/or positioning the heating sections and performing a moulding step.
  • the moulding step comprises moulding the thermally insulating barriers, a first end and a second end, so that a heating section of the plurality of heating sections is form-fittingly received between the first end, the second end and two thermally insulating barriers.
  • the present disclosure relates to heating a consumable for an aerosol generating apparatus.
  • the consumable may comprise flavour material or tobacco material that is heated without burning. Flavour and/or nicotine is released by heating of the tobacco material while generating substances as a result of a burning the tobacco material are avoided. Still, when heating tobacco material, a depletion effect occurs in that flavour and/or nicotine content of a particular part of the tobacco material of the consumable is reduced while further substances generated by the heating of the tobacco material are enriched within the consumable.
  • air is drawn through the heated consumable material, so that the air is enriched with flavour and/or nicotine when flowing through the consumable.
  • a user of the aerosol generating apparatus subsequently inhaled the air that has passed through the heated consumable material in order to get a sensory experience.
  • a difference sensory experience may be provided to a user throughout a smoking cycle, i.e., a usage cycle of a consumable or a part of a consumable, where the air passing through the heated consumable material substantially continues to move through the same material part.
  • a single smoking cycle may in particular be a cycle where a user experiences a single nicotine payload, e.g., comparable to the nicotine payload of a common cigarette.
  • the aforementioned depletion and enrichment effects may only occur in the heated part of the consumable.
  • the sensory experience for a user may sufficiently be as if the consumable has not been heated previously.
  • heating only a part of the consumable material may allow to provide a user with a renewed smoking experience or sensory experience when switching from a heated part of the consumable to a non-heated part.
  • a consumable is heated in a defined radial section of the consumable, thereby providing a single heated air flow path through the entire length of the consumable.
  • essentially the completed previously heated section may be removed from the air flow path.
  • the heating system of the present disclosure may allow heating a consumable in two separate radial sections, which would then essentially correspond to two half circles. Such may be achieved by providing a heating system having two heating elements each exhibiting a half-moon shape heating sections. Two heating sections and thus two heating elements may be separated by an insulating barrier, so to avoid spreading of the heat energy from one heating section to a further heated session.
  • top heating section or the bottom considering a flow direction of air through the consumable, may be used first. If the top is used first, then when the second zone is used, the consumer will be drawing through the already used, possibly burnt section of tobacco. If the bottom heater zone is used first, then there will be heating of the top section of tobacco, possibly depleting some active ingredients, before it is desired.
  • the direction of airflow through the consumable will not impact the other section(s), either by heating them due to hot airflow, or by masking the tobacco flavour with burnt taste.
  • Each heating section may heat a section or part of the outer surface of the consumable independently.
  • the thermally insulating barrier may be arranged to avoid heat transfer, i.e., bleeding of heat used to heat one heating section of the outer surface of the consumable into the other heating section(s) of the outer surface of the consumable.
  • the heating sections of the consumable may be switched within one smoking cycle to provide "fresh" tobacco material in the course of consuming the consumable.
  • a particular heating section of the consumable may be seen to correspond to tobacco material for one smoking cycle, so that a consumable can be used for a plurality of smoking cycles, without the other smoking experience(s) being influenced by the previous smoking cycle.
  • a unique radial section may correspond to consumable, e.g., tobacco, material for one smoking cycle, so that a consumable may be used for a plurality of smoking cycles, without the smoking experience of a subsequent smoking cycle being influenced by the previous smoking cycle.
  • a uniform inner surface may be understood as a substantially flat, even or a gapless inner surface, at least in defined parts or sections of the inner surface.
  • an example of a complete uniform inner surface may be a circular, conical or oval inner surface.
  • sectionally uniform inner surfaces may one with three corners or bends, e.g., a triangular shaped inner surface, four corners or bends, e.g., a quadratic or rectangular shaped inner surface, five corners or bends, e.g., a pentagon shaped uniform inner surface, six corners or bends, e.g., a hexagon shaped uniform inner surface.
  • further uniform inner surfaces may exhibit a heptagon shape, octagon shape etc.
  • the sides between corners may be straight or continuously curved.
  • the heating sections may comprise or consist of a material with a high thermal conductivity, e.g. a metal, like steel, stainless steel or copper.
  • An individually controllable heating element or a part of a larger heating element spanning multiple heating sections and commonly heating the heating sections, e.g., a resistive heater track or an infrared heater element, may be arranged adjacent to and or in contact with a particular heating section.
  • the heating element may be arranged radially outward from the inner surface of the heating sections, so to heat the material of the heating section from the far side of the inner surface.
  • the high heat conductivity of the heating section allows the transfer of the heat energy to the section of the consumable arranged adjacent to and radially inward of the inner surface of the particular heating section.
  • the thermally insulating barrier may comprise or consist of a material with a low thermal conductivity, e.g. plastics, like PEEK, ceramics, carbon-based material, carbon fibre-based material or glass.
  • both the material of the heating sections and of the thermally insulating barriers exhibits a smooth surface and/or has non-stick properties, in particular when considering materials commonly used in a consumable, like paper, tobacco or aerosol-generating filler material.
  • the aerosol-forming material comprises at least one volatile compound that is intended to be vaporised/aerosolised and that may provide the user with a recreational and/or medicinal effect when inhaled.
  • Suitable chemical and/or physiologically active volatile compounds include the group consisting of: nicotine, cocaine, caffeine, opiates and opoids, cathine and cathinone, kavalactones, mysticin, beta-carboline alkaloids, salvinorin A together with any combinations, functional equivalents to, and/or synthetic alternatives of the foregoing.
  • the aerosol-forming material may comprise plant material.
  • the plant material may comprise least one plant material selected from the list including Amaranthus dubius, Arctostaphylos uva-ursi (Bearberry), Argemone mexicana, Amica, Artemisia vulgaris, Yellow Tees, Galea zacatechichi, Canavalia maritima (Baybean), Cecropia mexicana (Guamura), Cestrum noctumum, Cynoglossum virginianum (wild comfrey), Cytisus scoparius, Damiana, Entada rheedii, Eschscholzia califomica (California Poppy), Fittonia albivenis, Hippobroma longiflora, Humulus japonica (Japanese Hops), Humulus lupulus (Hops), Lactuca virosa (Lettuce Opium), Laggera alata, Leonotis
  • the aerosol-forming material comprises tobacco which will contain nicotine as a volatile compound.
  • tobacco Any type of tobacco may be used. This includes, but is not limited to, flue-cured tobacco, burley tobacco, Maryland Tobacco, dark-air cured tobacco, oriental tobacco, dark-fired tobacco, perique tobacco and rustica tobacco. This also includes blends of the above-mentioned tobaccos. Any suitable parts of the tobacco plant may be used. This includes leaves, stems, roots, bark, seeds and flowers.
  • the aerosol-forming material may comprise one or more of leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, shredded tobacco, homogenised tobacco, extruded tobacco, cut rag tobacco and/or reconstituted tobacco (e.g. slurry recon or paper recon).
  • a method of manufacturing the heating system is proposed.
  • it is proposed to manufacture the heating system by moulding the thermally insulating barriers so that the material of the thermally insulating material of the thermally insulating barriers is essentially surrounding and/or holding the heating elements.
  • the heating sections can be first arranged and/or positioned so that they are in a relative position and/or spatial arrangement to one another, corresponding to their final position relative to one another in the heating system.
  • a moulding step is performed where the material of the thermally insulating barriers is moulded around or at least partially or selectively around the circumference of the heating sections.
  • the material of the thermally insulating barriers may thereby constitute a frame or support structure holding the heating sections in place relative to one another while engaging with the heating sections in a form fit.
  • the resulting heating system may in particular be an integral part formed by the heating sections and the thermally insulating barriers.
  • the heating system comprises additional elements made of the same thermally insulating material as the thermally insulating barriers.
  • the additional elements may be a first end and a second end, so that each heating section is surrounded on four sides/around its circumference by the material of the thermally insulating barriers.
  • the cavity may comprise a uniform cylindrical inner surface so that an inserted part of a circular cylindrically shaped consumable is arranged to be in surface contact with the inner cylindrical surface of the cavity across substantially the entirety of the inserted part.
  • the surface contact between the inner cylindrical surface and the outside surface or outer surface of the consumable may be maximized.
  • a heat transfer between a particular heating section and the respective surface section, radial surface section of the consumable may be maximized.
  • the cavity may comprise a uniform conical inner surface so that an inserted part of a circular cylindrically shaped consumable is arranged to be in surface contact with the inner cylindrical surface of the cavity across substantially the entirety of the inserted part.
  • an inserted consumable may experience progressively reduced cross-sectional area when being inserted into the cavity, therefore experiencing an increased surface contact with the inner surface distal from the initial receiving opening. Potentially, the consumable material may even be (slightly) compressed when the cross-sectional area of the cavity approximates or goes below the cross-sectional area of the consumable in that region of the cavity.
  • the initial receiving opening may be an opening that is arranged at the outside of the housing of the aerosol generating apparatus.
  • the cavity may thus exhibit a slightly conical shape and may thus be tapered or a truncated cone.
  • the angle of a vector parallel to the inner surface of the cavity and a vector parallel to the longitudinal extension of the cylindrical cavity, i.e., a vector parallel to the height in case the cavity resembles a truncated cone, is less than 20°, in particular less than 15°, less than 10°, less than 9°, less than 8°, less than 7°, less than 6°, less than 5°, less than 4°, less than 3°, less than 2° or substantially 1°.
  • the heating system may comprise two, three, four, five, six, seven, eight, nine, ten, eleven, twelve or more heating sections and thermally insulating barriers.
  • each heating section may be arranged to independently heat a unique radial section of a consumable.
  • not all heating sections may be activated during a particular smoking cycle, in particular only one half, one third, one fourth, one fifth, one sixth, one seventh, one eighth, one nineth, one tenth, one eleventh or one twelfth of all heating sections may be activated during a particular smoking cycle.
  • Providing an according number of heating sections and insulating barriers may allow the provision of a comparable number of independently heatable heating sections.
  • a number of heating sections may allow to independently heat a comparable number of unique radial sections of a consumable.
  • two heating sections may allow the provision of a consumable intended for two smoking cycles so that one half of the consumable is heated by one heating section during the first smoking cycle and the second half of the consumable is heated by the other heating section during the second smoking cycle.
  • used consumable material from the first smoking cycle may not or may only marginally impact the sensory experience of a user during the second smoking cycle.
  • Such a mode of operation may potentially be implemented using more than two heating sections.
  • each uniquely heatable radial section of a consumable corresponds to a defined number of puffs.
  • an aerosol generating apparatus having 12 independently heatable heating sections allows to provide a total of 24 puffs.
  • an aerosol generating apparatus having 12 independently heatable heating section would allow to provide substantially fresh consumable material of a unique radial section for each puff of a smoking cycle.
  • a particular preferable embodiment may be one with two, three or four independent heating sections. Further, it may be preferable that with a consumable having a plurality of unique radial sections, only non-adjacent radial sections may be heated consecutively.
  • each thermally insulating barrier may be arranged to reduce or prohibit heat transfer from a particular heating section from an adjacent or a further heating section.
  • the thermally insulating barrier By providing such a thermally insulating barrier, the heat impact of one heating sections onto adjacent or further heating sections may be reduced or substantially prevented. Thereby, it may be assured that heating of one unique radial section of a consumable does not unnecessarily deplete or otherwise impact a further unique radial section of the consumable, which is currently not intended to be heated. In other words, the thermally insulating barrier may avoid "bleeding" of heat of one heating section into a further heating section.
  • each heating section may comprise a heating element and a heat transfer element, wherein the heat transfer element is arranged adjacent to the heating element and oriented towards the cavity, wherein the heat transfer element is arranged to receive heat energy from the heating element and propagate the heat energy towards the cavity, and wherein the heat transfer element constitutes the inner surface section of said particular heating section.
  • the heat transfer element may be arranged to transfer the heat energy of the heating element of a particular heating section to a particular radial section of a consumable, in particular to distribute evenly the heat energy of the heating element over the surface of the radial section of the inserted part of the consumable.
  • a heat transfer element may allow the heat distribution from a heating element which may be of a smaller size than the surface of a particular unique radial heating section.
  • a heating element that would be in direct or close contact with the surface of the consumable, such could result in an uneven heating of the surface of the consumable.
  • Such an uneven heating may result in consumable material not being heated uniformly in a particular unique radial section.
  • a heat transfer element that distributes localized heat generated by a heating element across the substantially full surface of the consumable surface contributes to an even heating of the consumable material of a particular radial section.
  • the heat transfer element may in particular be a heat transfer layer having a comparably small thickness.
  • the plurality of heating sections and the plurality of thermally insulating barriers may be arranged so not to unevenly alter the surface shape of a consumable inserted in the cavity.
  • the inner surfaces of the heating sections and the thermally insulating barriers are provided in a substantially continuous manner.
  • the inner surfaces of the heating sections and the thermally insulating barriers may comprise similar or identical circular sectors having similar or identical radii.
  • the ratio of the surface area of the plurality of heating sections to the total inner surface area of the cavity may be 0,9, greater than 0,9, 0,91, 0,92, 0,93, 0,94, 0,95, greater than 0,95, 0,96, 0,97, 0,98, 0,99, greater than 0,99, or substantially 1.
  • Having a higher ratio of surface area of the heating section compared to a thermally insulating barrier allows to avoid a significant reduction in heat exposure of consumable material in the area of the thermally insulating barriers.
  • a comparably slim thermally insulating barrier while prohibiting a direct heat transfer from one heating section to an adjacent heating section, may still allow sufficient heat exposure for the consumable material to substantially heat the complete unique radial section of the consumable, thereby avoiding that on heated or less heated consumable material exists in the area of the thermally insulating barriers between heating sections.
  • the heating system may be manufactured as an integral element by providing and positioning the heating sections, performing a moulding step, wherein the moulding step comprises moulding the thermally insulating barriers so that a heating section of the plurality of heating sections is form-fittingly received between two thermally insulating barriers.
  • the heating system may be manufactured as an integral element by providing and positioning the heating sections, performing a moulding step, wherein the moulding step comprises moulding the thermally insulating barriers, a first end, and a second end, so that a heating section of the plurality of heating sections is form-fittingly received between the first end, the second end and two thermally insulating barriers.
  • the more than one heating sections activated during a particular smoking cycle may be activated in parallel, successively, may be phased in, may be phased out and/or a heating section may be phased in while a further heating section may be phased out.
  • the aerosol generating apparatus may be set to heat to radial section simultaneously.
  • the heating of a particular unique radial section may be phased out while the heating of a further unique radial section may be phased in, so that potentially the exposure of the user to flavour and/or nicotine remains substantially constant.
  • one unique radial section gets progressively depleted, said depletion is compensated by providing flavour and/or nicotine from a further unique radial section.
  • only a further radial section may be phased in since the already heated radial section is effectively phased out by its being depleted, without actually requiring phasing out the heating of the respective unique radial section.
  • a particular heating section of the plurality of heating sections may be switched on or phased in or switched off or phased out dependent on a number of detected puffs within a particular smoking cycle.
  • the aerosol generating apparatus detects a number of paths conducted by the user and dependent on a defined number of puffs per week radial section of a consumable, the heating sections may be controlled.
  • the heating section corresponding to said unique radial section may be switched off or phased out after four puffs while the heating section of a further unique radial section may be switched on or phased in.
  • the aerosol generating apparatus may be arranged to direct an airflow through the consumable so that the airflow is generally directed, in particular substantially limited to passing through the heated section of the consumable, while limiting or substantially prohibiting passing through the non-heated section of the consumable.
  • the aerosol generating apparatus may be arranged to allow insertion of a particular consumable only in a defined unique radial position. In other words, an unintended rotation of the consumable may be avoided. Thereby, a user may remove a consumable where not all unique radial sections of the consumable have been heated previously and may reinsert the same consumable while maintaining the same radial position.
  • the consumable is adapted so that it can only be inserted into the cavity in a defined unique radial orientation.
  • an " aerosol generating apparatus” may be an apparatus configured to deliver an aerosol to a user for inhalation by the user.
  • the apparatus may additionally/alternatively be referred to as a "smoking substitute apparatus", if it is intended to be used instead of a conventional combustible smoking article.
  • a combustible “smoking article” may refer to a cigarette, cigar, pipe or other article, that produces smoke (an aerosol comprising solid particulates and gas) via heating above the thermal decomposition temperature (typically by combustion and/or pyrolysis).
  • An aerosol generated by the apparatus may comprise an aerosol with particle sizes of 0.2 - 7 microns, or less than 10 microns, or less than 7 microns. This particle size may be achieved by control of one or more of: heater temperature; cooling rate as the vapour condenses to an aerosol; flow properties including turbulence and velocity.
  • the generation of aerosol by the aerosol generating apparatus may be controlled by an input device.
  • the input device may be configured to be user-activated and may for example include or take the form of an actuator (e.g., actuation button) and/or an airflow sensor.
  • Each occurrence of the aerosol generating apparatus being caused to generate aerosol for a period of time may be referred to as an " activation " of the aerosol generating apparatus.
  • the aerosol generating apparatus may be arranged to allow an amount of aerosol delivered to a user to be varied per activation (as opposed to delivering a fixed dose of aerosol), e.g. by activating an aerosol generating unit of the apparatus for a variable amount of time, e.g. based on the strength/duration of a draw of a user through a flow path of the apparatus (to replicate an effect of smoking a conventional combustible smoking article).
  • the aerosol generating apparatus may be portable.
  • portable may refer to the apparatus being for use when held by a user.
  • an " aerosol generating system” may be a system that includes an aerosol generating apparatus and optionally other circuitry/components associated with the function of the apparatus, e.g., one or more external devices and/or one or more external components (here “external” is intended to mean external to the aerosol generating apparatus).
  • an “external device” and “external component” may include one or more of a: a charging device, a mobile device (which may be connected to the aerosol generating apparatus, e.g., via a wireless or wired connection); a networked-based computer (e.g., a remote server); a cloud-based computer; any other server system.
  • An example aerosol generating system may be a system for managing an aerosol generating apparatus.
  • Such a system may include, for example, a mobile device, a network server, as well as the aerosol generating apparatus.
  • an " aerosol" may include a suspension of precursor, including as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air.
  • An aerosol herein may generally refer to/include a vapour.
  • An aerosol may include one or more components of the precursor.
  • a " precursor" may include one or more of a: liquid; solid; gel; loose leaf material; other substance.
  • the precursor may be processed by an aerosol generating unit of an aerosol generating apparatus to generate an aerosol.
  • the precursor may include one or more of: an active component; a carrier; a flavouring.
  • the active component may include one or more of nicotine; caffeine; a cannabidiol oil; a non-pharmaceutical formulation, e.g., a formulation which is not for treatment of a disease or physiological malfunction of the human body.
  • the active component may be carried by the carrier, which may be a liquid, including propylene glycol and/or glycerine.
  • flavouring may refer to a component that provides a taste and/or a smell to the user.
  • the flavouring may include one or more of: Ethylvanillin (vanilla); menthol, Isoamyl acetate (banana oil); or other.
  • the precursor may include a substrate, e.g., reconstituted tobacco to carry one or more of the active component; a carrier; a flavouring.
  • the precursor correspond to the consumable material.
  • a " storage portion” may be a portion of the apparatus adapted to store the precursor. It may be implemented as fluid-holding reservoir or carrier for solid material depending on the implementation of the precursor as defined above.
  • a " flow path" may refer to a path or enclosed passageway through an aerosol generating apparatus, e.g., for delivery of an aerosol to a user.
  • the flow path may be arranged to receive aerosol from an aerosol generating unit.
  • upstream and downstream may be defined in respect of a direction of flow in the flow path, e.g., with an outlet being downstream of an inlet.
  • a “ delivery system” may be a system operative to deliver an aerosol to a user.
  • the delivery system may include a mouthpiece and a flow path.
  • a " flow" may refer to a flow in a flow path.
  • a flow may include aerosol generated from the precursor.
  • the flow may include air, which may be induced into the flow path via a puff by a user.
  • a " puff” (or “ inhale “ or “ draw ”) by a user may refer to expansion of lungs and/or oral cavity of a user to create a pressure reduction that induces flow through the flow path.
  • an " aerosol generating unit" may refer to a device configured to generate an aerosol from a precursor.
  • the aerosol generating unit may include a unit to generate a vapour directly from the precursor (e.g., a heating system or other system) or an aerosol directly from the precursor (e.g., an atomiser including an ultrasonic system, a flow expansion system operative to carry droplets of the precursor in the flow without using electrical energy or other system).
  • a plurality of aerosol generating units to generate a plurality of aerosols may be present in an aerosol generating apparatus.
  • a " heating system” may refer to an arrangement of at least one heating element, which is operable to aerosolise a precursor once heated.
  • the at least one heating element may be electrically resistive to produce heat from the flow of electrical current therethrough.
  • the at least one heating element may be arranged as a susceptor to produce heat when penetrated by an alternating magnetic field.
  • the heating system may be configured to heat a precursor to below 300 or 350 degrees C, including without combustion.
  • a " consumable" may refer to a unit that includes a precursor.
  • the consumable may include an aerosol generating unit, e.g., it may be arranged as a cartomizer.
  • the consumable may include a mouthpiece.
  • the consumable may include an information carrying medium.
  • the consumable With liquid or gel implementations of the precursor, e.g., an e-liquid, the consumable may be referred to as a "capsule” or a “pod” or an "e-liquid consumable".
  • the capsule/pod may include a storage portion, e.g., a reservoir or tank, for storage of the precursor.
  • the consumable may be referred to as a "stick" or "package” or "heat-not-burn consumable”.
  • the mouthpiece may be implemented as a filter and the consumable may be arranged to carry the precursor.
  • the consumable may be implemented as a dosage or pre-portioned amount of material, including a loose-leaf product.
  • an "information carrying medium” may include one or more arrangements for storage of information on any suitable medium. Examples include: a computer readable medium; a Radio Frequency Identification (RFID) transponder; codes encoding information, such as optical (e.g., a bar code or QR code) or mechanically read codes (e.g., a configuration of the absence or presents of cut-outs to encode a bit, through which pins or a reader may be inserted).
  • RFID Radio Frequency Identification
  • heat-not-burn may refer to the heating of a precursor, typically tobacco, without combustion, or without substantial combustion (i.e., localised combustion may be experienced of limited portions of the precursor, including of less than 5% of the total volume).
  • an example aerosol generating apparatus 1 includes a power supply 2, for supply of electrical energy.
  • the apparatus 1 includes an aerosol generating unit 4 that is driven by the power supply 2.
  • the power supply 2 may include an electric power supply in the form of a battery and/or an electrical connection to an external power source.
  • the apparatus 1 includes a precursor 6, which in use is aerosolised by the aerosol generating unit 4 to generate an aerosol.
  • the apparatus 2 includes a delivery system 8 for delivery of the aerosol to a user.
  • Electrical circuitry (not shown in Fig. 1 ) may be implemented to control the interoperability of the power supply 4 and aerosol generating unit 6.
  • the power supply 2 may be omitted since, e.g., an aerosol generating unit implemented as an atomiser with flow expansion may not require a power supply.
  • Fig. 2 shows an exemplary embodiment of a heating system according to the present disclosure.
  • Fig. 2 depicts a heating system 20 having exemplarily two heating sections 22a,b, which are separated by two thermally insulating barriers 24.
  • Each heating section 22a,b has a generally semi-circular shape and thus constitutes half of a circular cylindrical structure.
  • the heating sections 22a,b form a cavity 28 for receiving a consumable 70.
  • the dimensions of the thermally insulating barriers 24 compared to the dimensions of the heating sections 22a,b are comparably small so that each heating section 22a,b heats substantially half of the surface of an inserted consumable, while the regions on the surface of the consumable that coincide with the thermally insulating barriers 24 may be neglectable. In other words, a potentially reduced heating of the regions on the surface of the consumable that coincide with the thermally insulating barriers 24 may not significantly impact the smoking experience of a user of an aerosol generating apparatus 1 using such a heating system 20.
  • Each heating section 22a,b thus corresponds to a unique radial section of the consumable 70 and is heating the respective adjacent unique radial section thereof.
  • a first end 30a of the heating system 20 may correspond to the end being arranged towards the outside of an aerosol generating apparatus 1 having such a heating system 20.
  • the first end 30a may thus be seen as having the receiving opening of the cavity 28 where a consumable 70 is inserted into the heating system 20.
  • the first end 30a is thus arranged proximal to the outside of the housing of an aerosol generating apparatus 1.
  • Heating system 20 comprises a further, second end 30b, which can also be referred to as the distal end when seen from the receiving opening of cavity 28.
  • the heating system 20 has a longitudinal extension, exemplified by arrow 26.
  • Arrow 26 essentially corresponds to an air flow direction through a consumable 70 inserted into the cavity 28 of the heating system 20.
  • the heating sections 22a,b may in particular be independently heatable so that the respective unique radial sections of the consumable are independently heatable as well.
  • Figs. 3a and 3b show exemplary embodiments of a heating system according to the present disclosure.
  • Fig. 3a corresponds to the heating system 20 of Fig. 2 , however has four heating sections 22a,b,c,d, as well as four thermally insulating barriers 24.
  • each heating section 22a,b,c,d exhibits a generally quarter circle shape for heating one of four unique radial sections of a consumable 70.
  • Fig. 3b in turn depicts a heating system having eight heating sections 22a-h and eight thermally insulating barriers 24.
  • each heating section may thus heat one of eight unique radial sections of a consumable 70, where each unique radial section corresponds to a radial section of 1/8 th of the consumable.
  • the dimension of a thermally insulating barrier 24 to a single such heating section 22a-h or radial section may still be in a collectible so that each heating section 22a-h substantially uniformly heats its adjacent radial section of 1/8 th of the consumable.
  • a single heating section may substantially completely and uniformly heat its adjacent radial section of 1/8 th (or 1/10 th or 1/12 th ) of the consumable 70.
  • Fig. 4 shows an implementation of the apparatus 1 of Fig. 1 , where the aerosol generating apparatus 1 is configured to generate aerosol by a-heat not-burn process.
  • the apparatus 1 includes a device body 50 and a consumable 70.
  • the body 50 includes the power supply 4 and a heating system 52.
  • the heating system 54 includes at least one heating element 54.
  • the body may additionally include any one or more of electrical circuitry 56, a memory 58, a wireless interface 60, one or more other components 62.
  • the electrical circuitry 56 may include a processing resource for controlling one or more operations of the body 50, e.g., based on instructions stored in the memory 58.
  • the wireless interface 60 may be configured to communicate wirelessly with an external (e.g., mobile) device, e.g., via Bluetooth.
  • an external (e.g., mobile) device e.g., via Bluetooth.
  • the other component(s) 62 may include an actuator, one or more user interface devices configured to convey information to a user and/or a charging port, for example (see e.g., Fig. 5 ).
  • the body 50 is configured to engage with the consumable 70 such that the at least one heating element 54 of the heating system 52 penetrates into the solid precursor 6 of the consumable.
  • a user may activate the aerosol generating apparatus 1 to cause the heating system 52 of the body 50 to cause the at least one heating element 54 to heat the solid precursor 6 of the consumable (without combusting it) by conductive heat transfer, to generate an aerosol which is inhaled by the user.
  • Fig. 5 shows an example implementation of the aerosol generating apparatus 1 of Fig. 4 .
  • the consumable 70 is implemented as a stick, which is engaged with the body 50 by inserting the stick into an aperture at a top end 53 of the body 50, which causes the at least one heating element 54 of the heating system 52 to penetrate into the solid precursor 6.
  • the consumable 70 includes the solid precursor 6 proximal to the body 50, and a filter distal to the body 50.
  • the filter serves as the mouthpiece of the consumable 70 and thus the apparatus 1 as a whole.
  • the solid precursor 6 may be a reconstituted tobacco formulation.
  • the at least one heating element 54 is a rod-shaped element with a circular transverse profile.
  • Other heating element shapes are possible, e.g., the at least one heating element may be blade-shaped (with a rectangular transverse profile) or tube-shaped (e.g., with a hollow transverse profile).
  • the body 50 includes a cap 51.
  • the cap 51 In use the cap 51 is engaged at a top end 53 of the body 50.
  • the cap 51 is moveable relative to the body 50.
  • the cap 51 is slidable and can slide along a longitudinal axis of the body 50.
  • the body 50 also includes an actuator 55 on an outer surface of the body 50.
  • the actuator 55 has the form of a button.
  • the body 50 also includes a user interface device configured to convey information to a user.
  • the user interface device is implemented as a plurality of lights 57, which may e.g., be configured to illuminate when the apparatus 1 is activated and/or to indicate a charging state of the power supply 4.
  • Other user interface devices are possible, e.g., to convey information haptically or audibly to a user.
  • the body may also include an airflow sensor which detects airflow in the aerosol generating apparatus 1 (e.g., caused by a user inhaling through the consumable 70). This may be used to count puffs, for example.
  • an airflow sensor which detects airflow in the aerosol generating apparatus 1 (e.g., caused by a user inhaling through the consumable 70). This may be used to count puffs, for example.
  • the consumable 70 includes a flow path which transmits aerosol generated by the at least one heating element 54 to the mouthpiece of the consumable.
  • the longitudinal extension 26 of the consumable 70 corresponds to the longitudinal extension 26 of the heating system 20, and may also indicate the air flow path of air drawn through the consumable 70 by a user of the aerosol generating apparatus 1.
  • the aerosol generating unit 4 is provided by the above-described heating system 52 and the delivery system 8 is provided by the above-described flow path and mouthpiece of the consumable 70.
  • Figs. 6a to 6d are further views of exemplary embodiments heating system according to the present disclosure.
  • Fig. 6a shows a cross sectional view cut through a plane perpendicular to the longitudinal axis of the heating system 20, having two heating sections 22a,b and two thermally insulating barriers 24.
  • Fig. 6b shows a cross sectional view cut through a plane parallel to the longitudinal axis of the heating system 20, having two heating sections 22a,b and two thermally insulating barriers 24.
  • Fig. 6c shows a perspective view of the heating system 20, having two heating sections 22a,b and two thermally insulating barriers 24.
  • each heating section 22a,b essentially have the shape of a semi-circle, so that two heating sections seen together essentially form a circular shape.
  • each heating section 22a,b has two essentially straight sides 102 and two essentially circular sides, here semi-circular 104 forming the respective circumference.
  • the two thermally insulating barriers 24 are arranged between the straight sides 102, thereby holding a positioning the heating sections 22a,b at a defined relative position to one another, spaced apart by the thermally insulating barriers 24.
  • the thermally insulating barriers 24 fill the gap between the heating sections 22a,b and they are in their intended or defined position relative to one another.
  • a first end 100a which may be made of the same thermally insulating material as the thermally insulating barriers 24.
  • thermoly insulating barriers 24 may be provided in a moulding step, where the thermally insulating barriers 24, the first end 100a and the second end 100b are moulded in a single step around the circumference of the heating sections 22a,b, in other words around the two straight sides 102 and the two semi-circular sides 104 forming the circumference of each heating section 22a,b.
  • the thermally insulating barriers are thus arranged at a 180° angle relative to one another.
  • the heating sections 22a,b are received within the material around the circumference, such that they are held in place by the thermally insulating material in a form fit.
  • an integral part consisting of the heating sections, the thermally insulating barriers and the first and second end is formed.
  • Fig. 6b shows an exemplary embodiment of where the curved sides 104 of the heating sections 22a,b are received by the first and second and in a notch 106.
  • the notch 106 contributes to the form fit between the heating sections and the thermally insulating material. As such, after the moulding step, the heating sections are held in place by the thermally insulating material without requiring a further measures or elements.
  • Fig. 6c shows the entire integral part of the exemplary embodiment of a heating system 20 comprising two heating sections 22a,b, two insulating barriers 24 and two ends 110a,b.
  • Fig. 6d shows a perspective view of the heating system 20, having four heating sections 22a,b,c,d and four thermally insulating barriers 24.
  • each heating section 22a,b,c,d comprises the shape of a quarter circle, rather than that of a semicircle.
  • the thermally insulating barriers 24 are thus arranged at a 90° angle relative to one another compared to the 180° angle relative to one another as with the embodiment of Figs. 6a-c .

Landscapes

  • Resistance Heating (AREA)
EP23198839.5A 2023-09-21 2023-09-21 Système de chauffage et appareil de génération d'aérosol Pending EP4527216A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23198839.5A EP4527216A1 (fr) 2023-09-21 2023-09-21 Système de chauffage et appareil de génération d'aérosol
PCT/EP2024/075632 WO2025061587A1 (fr) 2023-09-21 2024-09-13 Système de chauffage et appareil de génération d'aérosol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23198839.5A EP4527216A1 (fr) 2023-09-21 2023-09-21 Système de chauffage et appareil de génération d'aérosol

Publications (1)

Publication Number Publication Date
EP4527216A1 true EP4527216A1 (fr) 2025-03-26

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EP23198839.5A Pending EP4527216A1 (fr) 2023-09-21 2023-09-21 Système de chauffage et appareil de génération d'aérosol

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EP (1) EP4527216A1 (fr)
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0615411B1 (fr) * 1992-09-11 1999-07-28 Philip Morris Products Inc. Dispositif electrique pour fumeur degageant des aromes et procede de fabrication
US20150181934A1 (en) * 2013-12-27 2015-07-02 British American Tobacco (Investments) Limited Apparatus for Heating Smokeable Material
US20200008470A1 (en) * 2016-05-31 2020-01-09 Philip Morris Products S.A. Electrically operated aerosol-generating system with tubular aerosol-generating article having improved airflow
CN114343240A (zh) * 2021-12-20 2022-04-15 深圳市赛尔美电子科技有限公司 具有外部高传导性能的加热不燃烧装置
US20220143338A1 (en) * 2016-01-11 2022-05-12 Syqe Medical Ltd. Source material cartridge
JP2023089221A (ja) * 2018-10-12 2023-06-27 ジェイティー インターナショナル エス．エイ． エアロゾル発生装置及びそのための加熱チャンバ
CN219613086U (zh) * 2023-04-20 2023-09-01 中国烟草总公司郑州烟草研究院 一种发热体组件

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0615411B1 (fr) * 1992-09-11 1999-07-28 Philip Morris Products Inc. Dispositif electrique pour fumeur degageant des aromes et procede de fabrication
US20150181934A1 (en) * 2013-12-27 2015-07-02 British American Tobacco (Investments) Limited Apparatus for Heating Smokeable Material
US20220143338A1 (en) * 2016-01-11 2022-05-12 Syqe Medical Ltd. Source material cartridge
US20200008470A1 (en) * 2016-05-31 2020-01-09 Philip Morris Products S.A. Electrically operated aerosol-generating system with tubular aerosol-generating article having improved airflow
JP2023089221A (ja) * 2018-10-12 2023-06-27 ジェイティー インターナショナル エス．エイ． エアロゾル発生装置及びそのための加熱チャンバ
CN114343240A (zh) * 2021-12-20 2022-04-15 深圳市赛尔美电子科技有限公司 具有外部高传导性能的加热不燃烧装置
CN219613086U (zh) * 2023-04-20 2023-09-01 中国烟草总公司郑州烟草研究院 一种发热体组件

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