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WO2025202192A1 - Dispositif de génération d'aérosol à chauffage optique - Google Patents

Dispositif de génération d'aérosol à chauffage optique

Info

Publication number
WO2025202192A1
WO2025202192A1 PCT/EP2025/058121 EP2025058121W WO2025202192A1 WO 2025202192 A1 WO2025202192 A1 WO 2025202192A1 EP 2025058121 W EP2025058121 W EP 2025058121W WO 2025202192 A1 WO2025202192 A1 WO 2025202192A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol
generating
light sources
light
light source
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/EP2025/058121
Other languages
English (en)
Inventor
Franck Pourrat
Sebo POPKEN
Dick Paul VOERMAN
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.)
JT International SA
Original Assignee
JT International SA
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 JT International SA filed Critical JT International SA
Publication of WO2025202192A1 publication Critical patent/WO2025202192A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—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
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present invention relates to an aerosol generation device, in particular an aerosol generation device comprising one or more light sources for optically heating an aerosolgenerating substrate.
  • Aerosol generation devices of the prior art commonly found on the market employ thermal heating, wherein a heating system generates heat and contacts and transfers the generated heat to an aerosol-generating substrate, typically either directly via conduction or via convection by heating air drawn into the aerosol-generating device.
  • non-contact heating such as optical heating
  • optical heating only the parts of the aerosol-generating substrate that absorb generated light are heated.
  • Optical heating can therefore selectively target localized portions of the aerosol-generating substrate, and thus allows faster generation of an aerosol.
  • the invention is an aerosol-generating device comprising at least two light sources for emitting light onto an aerosol generating-substrate received by the aerosol generation device for generating an aerosol, wherein the at least two light sources comprise a first light source configured to emit light with a wavelength within a first range, and a second light source configured to emit light with a wavelength within a second range, wherein the first range and the second range are different one from another, and wherein the at least two light sources are configured to emit light on at least one same portion of an aerosol generating-substrate received by the aerosol generation device.
  • the 1 st aspect of the invention provides several advantages. Optical heating using light that is emitted onto and that is absorbed by the same portion of an aerosol-generating substrate provides a low maintenance aerosol-generating device that can generate an aerosol from the portion of the aerosol-generating substrate rapidly and with high efficiency.
  • the aerosol-generating substrate can be heated in a more targeted, localized, and effective manner, as light can be readily focused and directed, and only the portion of the aerosol-generating substrate onto which light is emitted is heated without thermal energy loss.
  • aerosol-generating substrates comprise different components, wherein different components have different optical absorption spectra and thus respond differently to being illuminated and heated by a light source.
  • first range and the second range being different from another preferably means that first range is not fully encompassed by the second range and vice versa. It further preferably means that there is substantially no overlap between the first range and the second range.
  • the first light source is configured to emit light with a wavelength within a first range of 380 nm to 500 nm, preferably of 430 nm to 470 nm, more preferably of 440 nm to 460 nm, most preferably of about 450 nm.
  • the second light source is configured to emit light with a wavelength within a second range of 520 nm to 590 nm, preferably of 540 nm to 570 nm, most preferably of about 555 nm, or a wavelength within a third range of 590 nm to 635 nm, preferably of 590 nm to 600 nm, most preferably of about 595 nm.
  • the applicant has found that many substrates, including tobacco substrates, have optical absorption properties that are enhanced at a wavelength, preferably within the first range, compared to other wavelengths that lie preferably within the second range or the third range. Consequently, by providing at least two light sources, with the first light source emitting light within the first range and the second light source emitting light within the second or third range, optical heating of the aerosol-generating substrate can be controlled to be more efficient, effective, and flexible.
  • At least one or more, preferably all of the least two light sources are one or more coherent light sources, preferably one or more laser diodes.
  • the 4 th aspect is advantageous since coherent light sources, such as, for example, lasers, usually have a small beam divergence that allows specific portions of a substrate to be accurately targeted without requiring focusing optical elements.
  • At least one or more, preferably all of the least two light sources are one or more non-coherent light sources, preferably one or more LEDs.
  • the 5 th aspect is advantageous as non-coherent light sources, such as, for example, LEDs, are smaller and require less power.
  • the 6 th aspect is advantageous as surface-emitting lasers allow miniaturization of the light sources, and simplify testing and mounting procedures during manufacturing of the aerosol-generating device.
  • At least two, preferably all of the at least two light sources are arranged at the same distance from the at least one same portion of the aerosol-generating substrate.
  • the 7 th aspect is advantageous as it improves control over the illumination and heating of the aerosol-generating substrate.
  • the distance of a light source to the aerosolgenerating substrate affects various aspects of the light incident on the aerosol- generating substrate. Parameters such as beam size/diameter, coherence, and intensity vary with the distance of the light source to the substrate. By arranging the light sources at a same distance minimizes deviations in the parameters between the light sources, and thus affords improved control.
  • the io th aspect is advantageous as it improves control over the process of heating the aerosol-generating substrate.
  • the vaporizing space corresponds to an enclosed space (or volume) within which a part or all of the aerosol-generating substrate is positioned and heated, and within which aerosol is generated for consumption by a user.
  • the vaporization space comprises a volume where the aerosol generated from the aerosol-generating substrate is received and also guided towards an air passage to release the aerosol from a vapor outlet of the device.
  • the at least two light sources are arranged such that incident angles of the lights emitted by the at least two light sources onto the surface of the at least one same portion of the aerosol-generating substrate are equal.
  • the at least one or more coherent light sources are selected from one or more of: a vertical cavity surface emitting laser (VCSEL), a photonic crystal surface-emitting laser (PCSEL), a topological cavity surface emitting laser (TCSEL) and a surface mounted device (SMD).
  • VCSEL vertical cavity surface emitting laser
  • PCSEL photonic crystal surface-emitting laser
  • TCSEL topological cavity surface emitting laser
  • SMD surface mounted device
  • the aerosol-generating unit 110 is configured to emit light onto an aerosol-generating substrate 210 for heating the aerosol-generating substrate 210 to generate an aerosol.
  • the configuration and arrangement of the aerosolgenerating unit 110 in the aerosol-generating device too depends on the type of aerosol-generating article 200 as well as the manner, in which an aerosol-generating article 200 comprising the aerosol-generating substrate 210 is received.
  • the configuration and arrangement of the aerosol-generating unit 110 may also depend on the way an aerosol-generating substrate 210 is to be heated.
  • the aerosol-generating article 200 that is exemplified as a disk shape but may have any shape described in the context of Figs.
  • one or more of the at least two light source may be arranged on an inner surface of the chamber 105, or may be recessed into an inner surface of the chamber 105.
  • the aerosol generating unit 110 may be configured as described below in the context of Figs. 4Ato 6C.
  • the aerosol-generating substrate 210 comprised by the aerosol-generating article, and the aerosol-generating unit 110 are arranged such that light emitted from the aerosolgenerating unit 110 is incident onto the aerosol-generating substrate 210.
  • the term wavelength of light emitted by a light source according to the present invention refers to peak wavelength, i.e., the wavelength at which the optical spectrum the light emitted by the light source has its maximum.
  • range light or light within the “orange range”
  • this corresponds to light within the visible spectrum that is from 590 nm to 635 nm, preferably from 590 nm to 600 nm, most preferably of about 595 nm.
  • the wavelength of light emitted by one light source being different than the wavelength of light emitted by another light source means that the peak wavelengths of the one light source is different from the peak wavelength of the other light source.
  • the peak wavelength of the one light source does not lie within the full width at half maximum (FWHM) of the spectrum of the other light source, and that the peak wavelength of the other light source does not lie within the FWHM of the one light source.
  • the aerosolgenerating unit 110 comprises at least two light sources.
  • the at least two light sources comprise a first light source 111 that is configured to emit light in the blue range, and a second light source 112.
  • the second light source 112 is configured to emit light in the green or, alternatively, in the orange range.
  • the at least two light sources may comprise a further third light source 113, as illustrated in Fig. 4B.
  • the third light source 113 is configured to emit light outside the blue range, wherein the third light source 113 is configured to emit light in the green range or, alternatively, in the orange range. It is preferred, when three light sources are provided, that the first light source in is configured to emit light in the blue range, the second light source 112 is configured to emit light in the green range, and the third light source 113 is configured to emit light in the orange range.
  • the at least two light sources are configured to light such that the emitted lights are incident onto the same portion of the aerosol-generating substrate 210.
  • at least two light sources are configured to emit light onto a same portion of an aerosol-generating substrate 210 when the main emission directions of the at least two light sources intersect within the same portion, or preferably at the surface of that same portion of the aerosolgenerating substrate 210 onto which light from the at least two light sources are incident.
  • this arrangement of light sources is not limited to two or three light sources, but is generally applicable to a plurality of light sources such as four or more light sources.
  • the type of light source can be chosen depending on the requirements of the aerosolgenerating device too regarding heating performance, energy consumption, spatial constraints within the aerosol-generating device too, size and shape of the aerosolgenerating substrate 210, and other factors known to the person skilled in the art.
  • one or more, or all of the at least two light sources are coherent light sources, such as, for example, lasers.
  • Lasers in particular, have a small beam divergence and thus narrow beam that allows heating of the aerosol-generating substrate 210 to be focused on and limited to a precise and well-defined portion of the aerosol-generating substrate 210. This provides improved control over the heating process and allows targeted and selective heating of the aerosol-generating substrate 210.
  • the lasers maybe surface-emitting lasers, such as, for example, vertical cavity surface emitting lasers (VCSEL), photonic crystal surface-emitting lasers (PCSEL), and topological cavity surface emitting lasers (TCSEL).
  • VCSEL vertical cavity surface emitting lasers
  • PCSEL photonic crystal surface-emitting lasers
  • TCSEL topological cavity surface emitting lasers
  • surface-emitting lasers are easier to manufacture and install in the aerosol-generating device too.
  • surfaceemitting lasers require less power, which is particularly advantageous in portable or handheld aerosol-generating devices that have a limited and non-constant constant power supply.
  • the type of light source is not limited to coherent light sources.
  • one or more, or all of the at least two light sources may be noncoherent light sources, such as, for example, such as LEDs, filament bulbs or plasma/flame radiation devices.
  • LEDs in particular, are energy-efficient and requires less power to operate when compared to coherent light sources, such as, for example, lasers. As described, decreased power consumption is particularly advantageous in portable or handheld devices.
  • the at least two light sources may be arranged within the aerosol-generating device too such that their distance to at least one same portion of the aerosol-generating substrate 210, onto which the at least two light sources are configured to emit light, are equal.
  • Fig. 4A illustrates the aerosol-generating substrate 210 as a rectangular shape
  • the shape of the aerosol-generating substrate 210 is not limited and may have a circular, spherical, ellipsoidal, or cigarette-like shape, as described above in the contexts of Figs. 2Ato 2B.
  • the at least two light sources may be arranged to be at a same distance from a portion of one of the two flat surfaces.
  • the at least two light sources may be arranged to be at a same distance from the base of the aerosol-generating substrate 210 that is inserted into the cavity or chamber 105 of the aerosol-generating device too.
  • the at least two light sources may be arranged to be at a same distance from a curved portion of the lateral surface of the cylindrical shape of a cigarette.
  • the at least light sources are arranged in the aerosolgenerating device too such that when the aerosol-generating article 200 is attached to the aerosol-generating device too, the at least two light sources are arranged at a same distance from at least one same portion of the aerosol-generating substrate 210 onto which the at least two light source are configured to emit light.
  • the distance of the light source to the aerosol-generating substrate 210 affects the parameters of beam size, coherence, and intensity of light that is incident on the aerosol-generating substrate 210. If individual light sources of the at least two light sources are arranged at different distances from a same portion of the aerosol-generating substrate 210, differences in the above parameters must be accounted for when setting operational parameters of the individual light sources.
  • the beam size incident on the aerosol-generating substrate 210 from the first laser, positioned at a larger distance from the aerosol-generating substrate 210 is larger than the beam size of the second laser that is positioned at a smaller distance from the aerosol-generating substrate 210.
  • the area and/or volume of the aerosol-generating substrate 210 that is illuminated by the first laser is larger than the area and/or volume of the aerosol-generating substrate 210 that is illuminated by the second laser, thus leading to non-uniform heating of the aerosolgenerating substrate 210 by the first laser and the second laser.
  • the at least light sources are of a same type of light sources, such as, lasers of a same type, it is therefore preferred to arrange the at least two light sources at a same distance from the aerosol-generating substrate 210, since it minimizes deviations in the above parameters and affords improved control over the heating process.
  • the light sources of the aerosol generating unit may be provided with collimating components which allows to adjust the beam size.
  • This arrangement may be advantageous when the distance from each of the light sources to the irradiation area is different because it allows to compensate divergence of lights which increases the beams size with an increase in distance from the light source.
  • the at least light sources when viewing an outer surface portion of the aerosol-generating substrate 210 onto which the at least two light sources are configured to emit light, from a plan view, the at least light sources may be arranged to emit light onto the portion of the aerosol-generating substrate 210 from different directions, i.e., the emission directions of the at least two light sources are non-parallel to each other. This facilitates the arrangement of the at least two light sources within the spatial constraints of the aerosol-generating device too and allows the at least two light sources to be arranged in close proximity to the aerosol-generating substrate 210 while allowing the at least two light sources to emit light directly onto a same portion of the aerosol-generating substrate 210.
  • the at least two light sources may be arranged, in plan view, on a curved, preferably arced, or even more preferably circular or elliptical line.
  • the arrangement on a circular or elliptical line is particularly advantageous for an aerosol-generating device too that is of an elongated shape with a circular or elliptical base shape, as described in the context of embodiments illustrated in Figs. 2Ato 2B.
  • the at least two light sources are arranged such that the lights emitted by the at least two light sources are incident on the same portion of the aerosol-generating substrate 210 from different directions that, when view in plan view, are spaced apart by equal angular distances from each other. This can be achieved by arranging the at least two light sources, when viewed in plan view and based on the point, at which the main emission directions of the at least two light sources intersect, as the origin point, at equal angular distances from each other.
  • the at least two light sources are arranged such that the lights emitted by the at least two light sources have a same angle of incidence onto the surface of a same portion of the aerosol-generating substrate 210. Since light sources in general have a non-zero beam divergence, parameters such as size and intensity of the emitted lights that are incident onto the portion of the aerosol-generating substrate 210 are dependent on the incidence angle. A larger incidence angle of a light source (relative to the local surface normal) leads to a larger surface area or volume of the aerosol-generating substrate 210 being illuminated by light emitted from the light source than a smaller incidence angle, and thus changing the beam intensity onto the aerosol-generating substrate 210.
  • a light with a circular beam profile that is incident onto a surface at a non-zero incidence angle will result not in a circular, but an elliptical illuminated area on the surface of the aerosol-generating substrate 210.
  • By emitting light onto the aerosol-generating substrate 210 at a same incidence angle minimizes differences between the beam intensity distribution of the lights of the at least two sources on the aerosol-generating substrate 210, which is particularly advantageous for light sources of a same type with a same or similar beam profile. This affords more uniform heating of the aerosol- generating substrate 210 via the at least two light sources and provides improved control over the heating process.
  • Figs. 4A, 4B, 5A, and 5B illustrate an aerosol-generating unit 110 with two light sources or three light sources
  • the number is light sources is only limited by spatial constraints and/ or power supply limitations of the aerosol-generating device 100
  • the aerosol-generating unit 110 may comprise four or more light sources.
  • the aerosol-generating unit 110 may comprise six light sources. While in Fig. 6A, the arrangement of the six light sources is illustrated in relation to a rectangular or disk-shaped aerosol-generating substrate 210, the arrangement described in the following can be applied to any suitable shape of the aerosol-generating substrate 210, such as, for example, spherical, ellipsoidal, or cylindrical aerosol-generating substrates.
  • the aerosol-generating substrates may preferably be aerosol-generating substrates as described in the context of embodiments shown and illustrated in Figs 2Ato 5B.
  • the light sources of the embodiment illustrated in Figs. 6A and 6B may preferably be light sources as described above in the context of embodiments illustrated in Figs. 3A to 5B.
  • a first light source and a first further light source 111a are provided to form a first pair of light sources.
  • the first light source 111 and the first further light source 111a may be arranged on opposite sides of the aerosol-generating substrate 210.
  • the first light source 111 and the first further light source 111a maybe arranged adjacent each other.
  • a second light source 112 and a second further light source 112a maybe provided to form a second pair of light sources.
  • a third light source 113 and a third further light source 113a may be provided to form a third pair of light sources.
  • the arrangement of the second light source 112 and the second further light source 112a, and additionally, or alternatively, the arrangement of the third light source 113 and the third further light source 113a may be as described for the first light source 111 and the first further light source 111a.
  • the first light source 111, the second light source 112, and the third light source 113 may be arranged on one side of the aerosolgenerating substrate 210 as described above in the context of embodiments illustrated in Figs. 4A to 5B.
  • the first light source 111, the second light source 112, and the third light source 113 may be arranged with distances to the aerosol-generating substrate 210, and/or with an incidence angle, and/or with an arrangement in plan view as described in the context of embodiments illustrated in Figs.
  • the first light source m, the second light source 112, and the third light source 113 may be configured to emit light in a blue range, and/ or green range, and/ or orange range as described above in the context of embodiments illustrated above in Figs. 3A to 5B.
  • the first light source 111 may be configured to emit light in the blue range
  • the second light source 112 may be configured to emit light in the green range
  • the third light source 113 may be configured to emit light in the orange range.
  • the first further light source 111a, the second further light source 112a, and the third further light source 113a may be configured to emit light with a wavelength substantially and respectively corresponding to the wavelength of the light emitted by the first light source 111, the second light source 112, and the third light source 113.
  • “Substantially corresponding” means that the peak wavelength of the first light source 111 and/or the second light source 112 and/or the third light source 113 lies, within the FWHM of, respectively, the first further light source 111a, the second further light source 112a, and the third further light source 113a.
  • the six light sources are configured to emit light onto at least one same portion of the aerosolgenerating substrate 210.
  • the six light sources are configured such that the main emission directions of the six emitted lights intersect at a common point within the aerosol-generating substrate 210.
  • the first light source 111, the second light source 112, and the third light source 113 may be configured such that their respective main emission directions intersect on one surface of the aerosol-generating substrate 210, while the first further light source, the second further light source, and the third further light source are configured such that their respective main emission directions intersect at the other, opposite surface of the aerosol-generating substrate 210.

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Abstract

Selon un premier aspect, l'invention concerne un dispositif de génération d'aérosol comprenant au moins deux sources de lumière pour émettre de la lumière sur un substrat de génération d'aérosol reçu par le dispositif de génération d'aérosol pour générer un aérosol, les au moins deux sources de lumière comprenant une première source de lumière configurée pour émettre de la lumière avec une longueur d'onde dans une première plage, une seconde source de lumière configurée pour émettre de la lumière avec une longueur d'onde dans une seconde plage, la première plage et la seconde plage étant différentes l'une de l'autre, et les au moins deux sources de lumière étant configurées pour émettre de la lumière sur au moins une même partie d'un substrat de génération d'aérosol reçu par le dispositif de génération d'aérosol.
PCT/EP2025/058121 2024-03-25 2025-03-25 Dispositif de génération d'aérosol à chauffage optique Pending WO2025202192A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24165904 2024-03-25
EP24165904.4 2024-03-25

Publications (1)

Publication Number Publication Date
WO2025202192A1 true WO2025202192A1 (fr) 2025-10-02

Family

ID=90468746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/058121 Pending WO2025202192A1 (fr) 2024-03-25 2025-03-25 Dispositif de génération d'aérosol à chauffage optique

Country Status (1)

Country Link
WO (1) WO2025202192A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017186944A1 (fr) * 2016-04-29 2017-11-02 British American Tobacco (Investments) Limited Article, appareil et procédé de chauffage d'un matériau à fumer
US20190059444A1 (en) * 2017-08-22 2019-02-28 Healthier Choices Management Corp Electronic vaporizer with laser heat source
WO2020148214A1 (fr) * 2019-01-14 2020-07-23 Philip Morris Products S.A. Système de génération d'aérosol chauffé par rayonnement, cartouche, élément de génération d'aérosol et procédé associé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017186944A1 (fr) * 2016-04-29 2017-11-02 British American Tobacco (Investments) Limited Article, appareil et procédé de chauffage d'un matériau à fumer
US20190059444A1 (en) * 2017-08-22 2019-02-28 Healthier Choices Management Corp Electronic vaporizer with laser heat source
WO2020148214A1 (fr) * 2019-01-14 2020-07-23 Philip Morris Products S.A. Système de génération d'aérosol chauffé par rayonnement, cartouche, élément de génération d'aérosol et procédé associé

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