EP4385346A1 - Ein heizer für eine aerosolerzeugungsvorrichtung mit konfiguration zum betrieb mit einem elektrisch leitfähigen verbrauchsartikel - Google Patents

Ein heizer für eine aerosolerzeugungsvorrichtung mit konfiguration zum betrieb mit einem elektrisch leitfähigen verbrauchsartikel Download PDF

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Publication number
EP4385346A1
EP4385346A1 EP22213590.7A EP22213590A EP4385346A1 EP 4385346 A1 EP4385346 A1 EP 4385346A1 EP 22213590 A EP22213590 A EP 22213590A EP 4385346 A1 EP4385346 A1 EP 4385346A1
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EP
European Patent Office
Prior art keywords
electrically conductive
electrodes
electrode
heater
conductive layer
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
EP22213590.7A
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English (en)
French (fr)
Inventor
Boris UYTTERHAEGEN
Laurent Houtsaeger
Jérôme MCDONALD
Julia Schindler
Willy Huwyler
Alec WRIGHT
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
Priority to EP22213590.7A priority Critical patent/EP4385346A1/de
Publication of EP4385346A1 publication Critical patent/EP4385346A1/de
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—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 invention relates to the technical field of aerosol generating devices configured for the generation of an inhalable aerosol by a user.
  • the invention relates to a heater for an aerosol generating device configured to operate with a consumable article comprising an electrically conductive heating layer of aerosol precursor material.
  • Aerosol generating devices comprising electrodes for heating electrically conductive aerosol generation precursors are known in the art.
  • the aerosol precursor material may be provided in a consumable article that is insertable in the aerosol generating device to provide fast and uniform heating of an aerosol precursor material with limited energy.
  • the aerosol precursor material may comprise a non-tobacco flavor generating substrate, such as for example a mentholated component.
  • electrically conductive material such as charcoal may be mixed in the aerosol generation to allow heating of the aerosol precursor material and generation of an aerosol therefrom by conduction of an electrical current delivered to the aerosol precursor material by the electrodes of the aerosol generation device.
  • the electrical current flows then from a power source via the electrodes through the charcoal particles in the aerosol precursor material to vaporize volatile flavor components contained therein.
  • US 2020/229510 discloses an aerosol generating system comprising several electrodes on each side of a consumable article (see elements 1055 a-b-c-d on figure 9) containing a liquid aerosol generation composition.
  • Such electrodes structure is unable of homogeneous heating of a solid aerosol generation substrate sandwiched between the electrodes.
  • US 11006668 and WO 2020/165450 disclose other aerosol generating systems comprising electrodes sandwiching a consumable article in between, but there is only one electrode on each side of the consumable article. which does not heat sufficiently homogeneously the consumable article sandwiched between the electrodes.
  • An object of the present invention is to alleviate at least partly deficiencies of the previously identified prior arts.
  • the invention proposes a heater for an aerosol generating device configured to operate with a consumable article comprising an electrically conductive heating layer of aerosol precursor material, the heater comprising: 2 electrically conductive layers facing each other and spaced apart from each other so as to sandwich said electrically conductive heating layer of aerosol precursor material, wherein: a first one of the 2 electrically conductive layers comprises at least 1 electrode, a second one of the 2 electrically conductive layers comprises at least 2 electrodes which are separated from each other by an electrically non-conductive space and which face at least partially one electrode of said first electrically conductive layer.
  • the aerosol precursor material is an aerosol generating solid substrate.
  • This aerosol generating solid substrate is sandwiched between the 2 electrodes.
  • This aerosol generating solid substrate is in contact with and even pressed by the 2 electrodes facing each other.
  • This aerosol generating solid substrate is kept between by the 2 electrodes facing each other, simply by the pression exerted by the 2 electrodes facing each other.
  • This pression does not damage or deteriorate the aerosol generating solid substrate.
  • This pression does not remove the porous nature of the aerosol generating solid substrate, it does not remove the existing voids within the porous aerosol generating solid substrate, so that the vapor can still benefit from theses existing voids to form within and to move through this porous aerosol generating solid substrate.
  • the heater of the invention is suitable for an aerosol generating device in which at least 2 or more electrodes are provided to homogeneously heat a consumable article, to reduce or to avoid hot spots, and to distribute more homogeneously the heat, all along and all across, the consumable and the electrically conductive heating layer of aerosol precursor material contained therein.
  • Electrodes are structured and disposed to heat more uniformly the consumable sandwiched between the electrodes, than a single electrode would do.
  • Another object of the invention relates to an aerosol generating assembly comprising: a consumable article; an aerosol generating device configured to operate with the consumable article and comprising a heater as previously described.
  • each electrode presents a surface configured to extend along an external surface of the consumable and be in contact with this external surface.
  • the electrodes are flat electrodes extending along an external surface of the aerosol precursor material in the consumable article in use.
  • the electrodes taken altogether, extend along at least half the length of an elongate aerosol precursor material layer in the consumable article in use.
  • these large and extended electrodes allow for much more uniform heating than would electrodes only located at respective ends of the elongate consumable.
  • said first electrically conductive layer comprises at least 2 electrodes which are separated from each other by an electrically non-conductive space and which face at least partially one electrode of said second electrically conductive layer.
  • this relative disposition of electrodes belonging to opposite conductive layers allows for a more uniform heating of the consumable article sandwiched between the electrodes in use.
  • each electrode of said second electrically conductive layer faces at least partially at least 2 electrodes of said first electrically conductive layer, and/or at least one electrode of said first electrically conductive layer faces at least partially at least 2 electrodes of said second electrically conductive layer.
  • this relative disposition of electrodes belonging to opposite conductive layers allows for a more uniform heating of the consumable article sandwiched between the electrodes in use.
  • all electrodes of said first electrically conductive layer are powered at a negative tension
  • all electrodes of said second electrically conductive layer are powered at a positive tension
  • this relative disposition of electrodes belonging to opposite conductive layers allows for a uniform heating of the consumable article sandwiched between the electrodes in use, while keeping a very simple electrical powering of the electrodes.
  • no electrode of said second electrically conductive layer is powered at any tension
  • one or more electrodes of said first electrically conductive layer is or are powered at a negative tension
  • one or more electrodes of said first electrically conductive layer is or are powered at a positive tension.
  • this relative disposition of electrodes belonging to opposite conductive layers allows for a more uniform heating of the consumable article sandwiched between the electrodes in use, while keeping a rather simple electrical powering of the electrodes.
  • only one electrode of said first electrically conductive layer is powered at a negative tension
  • only one electrode of said first electrically conductive layer is powered at a positive tension
  • said negative tension powered electrode and said positive tension powered electrode of said second electrically conductive layer are configured to face opposite ends of said consumable electrically conductive heating layer.
  • this relative disposition of electrodes belonging to opposite conductive layers allows for a more uniform heating of the consumable article sandwiched between the electrodes in use, while keeping a rather simple electrical powering of the electrodes.
  • all electrodes of said first electrically conductive layer are : powered at: either a negative predetermined tension, or a positive predetermined tension, and disposed relatively so that 2 electrodes powered at a positive tension are separated by an electrode powered at a negative tension and/or so that 2 electrodes powered at a negative tension are separated by an electrode powered at a positive tension.
  • this relative disposition of electrodes belonging to opposite conductive layers allows for a more uniform heating of the consumable article sandwiched between the electrodes in use, while keeping a rather simple electrical powering of the electrodes.
  • only one electrode of said first electrically conductive layer is powered at a negative tension
  • only one electrode of said first electrically conductive layer is powered at a positive tension
  • only one electrode of said second electrically conductive layer is powered at a negative tension
  • only one electrode of said second electrically conductive layer is powered at a positive tension
  • said negative tension powered electrode and said positive tension powered electrode of said second electrically conductive layer are located at opposite ends of said consumable electrically conductive heating layer
  • said negative tension powered electrode and said positive tension powered electrode of said first electrically conductive layer are located at opposite ends of said consumable article electrically conductive heating layer
  • said negative tension powered electrode of said second electrically conductive layer faces said negative tension powered electrode of said first electrically conductive layer
  • said positive tension powered electrode of said second electrically conductive layer faces said positive tension powered electrode of said first electrically conductive layer.
  • this relative disposition of electrodes belonging to opposite conductive layers allows for a more uniform heating of the consumable sandwiched between the electrodes, while keeping a rather simple electrical powering of the electrodes.
  • each electrode is a single and flat surface.
  • each electrode comprises two conductive strips shaped as two combs which are intricated within each other.
  • each electrode comprises several conductive strips parallel to one another and equidistant from one another, these conductive strips being raised with respect to their common non-conductive flat support, these conductive strips being narrower than the spaces between these conductive strips.
  • each electrode comprises several conductive strips parallel to one another and equidistant from one another, these conductive strips and their common non-conductive flat support making altogether a flat surface, these conductive strips being wider than the spaces between these conductive strips.
  • aerosol precursor material is a label used to mean a medium that generates an aerosol or vapour when heated. It may be synonymous with vapour precursor material, aerosol generation or generating medium, substrate, material or composition. Aerosol precursor material includes liquid or solid materials that provide volatilized components upon heating, typically in the form of vapour or an aerosol. Aerosol precursor material may be a non-tobacco-containing material or a tobacco-containing material. Aerosol precursor material may, for example, include one or more of tobacco per se, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco extract, homogenized tobacco or tobacco substitutes. Aerosol precursor material also may include other, non-tobacco, products, which, depending on the product, may or may not contain nicotine. Aerosol precursor material may comprise one or more humectants, such as glycerol or propylene glycol.
  • a vapour is a substance in the gas phase at a temperature lower than its critical temperature, which means that the vapour can be condensed to a liquid by increasing its pressure without reducing the temperature
  • an aerosol is a suspension of fine solid particles or liquid droplets, in air, another gas or a vapour.
  • Fig. 1 shows a sectional view of an example of a heater H for an aerosol generating device according to a first embodiment of the invention in cooperation with a consumable article 1.
  • the heater H comprises a first heater part 2 and a second heater part 3 comprising each an electrically conductive layer 4, 5 forming a contacting surface of the first and second heater parts 2, 3.
  • the first and second heater parts 2, 3 are in addition arranged such that their respective electrically conductive layers 4, 5 are facing each other and are spaced apart from each other by a distance G, thereby defining a gap in between the electrically conductive layers 4, 5.
  • the electrically conductive layers 4, 5 form respectively a first set of electrodes 41, 42, 43, 44 and a second set of electrodes 51, 52, 53, 54.
  • the first set of electrodes are space apart from the second set of electrodes by the distance G.
  • a consumable article 1 comprising a layer of an aerosol precursor material 1a is provided in the gap between the two heater parts 2, 3 in contact with the two electrically conductive layers 4, 5 facing thereof.
  • the aerosol precursor material 1a has a thickness T substantially equal to the distance G between the electrically conductive layers 4, 5 of the heater. It comprises one or more electrical conductors (not shown in the drawing) capable of conducting electric current delivered to the aerosol precursor material 1a from the electrically conductive layers 4, 5 contacting said aerosol precursor material 1a to heat it and to generate an aerosol.
  • the size and arrangement of the one or more electrical conductors is set such that as an electrical electric power is passed through them, the temperature of the electrical conductors increases to heat the aerosol precursor material 1a.
  • the one or more electrical conductors may be present in a particulate form throughout the aerosol precursor material 1a.
  • the aerosol precursor material 1a may comprise one or more dedicated heating layers, which are regions in which there is a high level of electrical conductors, or a relatively higher level of conduction due to the nature or number of electrical conductors.
  • electrical conductors are distributed throughout the aerosol precursor material 1a.
  • the aerosol precursor material 1a may be coated in one or more electrical conductors.
  • the electrical conductors may take the form of graphite or charcoal particles.
  • the electrical conductors may take the form of powder, loose or agglomerated particles mixed with the aerosol precursor material 1a or layered with it. It is also conceivable to use other conductive materials which are approved in particular at least in the tobacco industry or food industry.
  • the aerosol precursor material 1 is configured to electrically connect the two electrically conductive layers 4, 5 of the heater that it is located between. In this case, providing electric power to the at least two electrically conductive layers 4, 5 is used interchangeably with providing electrical power to the aerosol precursor material 1a.
  • a first one 4 of the two electrically conductive layers 4 and 5 comprises four electrodes 41, 42, 43, 44, which are separated from each other by an electrically non-conductive space 8. These electrodes 41, 42, 43, 44 face respectively corresponding four electrodes 51, 52, 53, 54 of the second electrically conductive layer 5, which are separated from each other by an electrically non-conductive space 9.
  • the electrically non-conductive spaces 8 of the first electrically conductive layer 4 and the electrically non-conductive spaces 9 of the second electrically conductive layer 5 are symmetrical to each other about a median longitudinal axis A of consumable article 1 and of substantially identical dimensions in all directions of space X, Y, Z.
  • All electrodes 41, 42, 43, 44 of the first electrically conductive layer 4 and all electrodes 51, 52, 53, 54 of the second electrically conductive layer 5 are identical to each other.
  • Each electrode 41 to 54 presents an electrically conductive body 10 and an electrically conductive coating 11 which in use is in contact with an electrically conductive external surface 12 of the aerosol precursor material 1a of the consumable article.
  • Each electrode 41 to 54 presents a surface, preferably a substantially flat surface, configured to extend along an external surface 12 of the consumable article 1 and to be in contact with this external surface 12.
  • the electrodes 51, 52, 53, 54 taken altogether extend along at least half (L/2) the length L of the consumable article 1 on another, symmetrical side thereof, preferably along at least three quarters of the length L of the consumable article 1, more preferably at 90% of the length L of the consumable article 1, even more preferably along the whole length L of the consumable article 1.
  • All electrodes 41 to 44 of the first electrically conductive layer 4 of the heater are powered at a negative tension by a power source, not represented in fig. 1 , to which they are connected.
  • All electrodes 51 to 54 of the second electrically conductive layer 5 are powered at a positive tension by a power source, not represented in fig. 1 , to which they are connected.
  • the respective power sources of electrodes 41 to 44 and 51 to 54 may be individual power sources such as lithium-ion batteries or a same power source, likewise a lithium-ion battery for example, connected to both sets of electrodes 41 to 44 and 51 to 54 respectively.
  • the electrodes 41 to 54 have a similar structure and disposition in all next figures as they had in figure 1 .
  • Fig. 2A to 2C show an exploded view, a perspective view and a sectional view of a heater H for an aerosol generating device according to a second embodiment of the invention, in cooperation with a consumable article 1.
  • the inventive heater in that second embodiment comprises a first heater part 2 and a second heater part 3 comprising each an electrically conductive layer 4, 5 forming a contacting surface of the first and second heater parts 2, 3.
  • the first and second heater parts 2, 3 are arranged such that their respective electrically conductive layers 4, 5 are facing each other and are spaced apart from each other by a distance G, thereby defining a gap in between the electrically conductive layers 4, 5.
  • the electrically conductive layers 4, 5 form respectively a first set of electrodes 41, 42, 43, 44 and a second set of electrodes 51, 52, 53, 54.
  • the first set of electrodes are spaced apart from the second set of electrodes by the distance G.
  • the consumable article 1 is identical to that described in relation to Fig. 1 and will not be described further in relation to that second embodiment of the heater H.
  • the consumable article 1 comprises at least one layer of aerosol precursor material 1a that has a thickness T substantially equal to the distance G between the electrically conductive layers 4, 5 of the heater H.
  • the consumable article is sandwiched in use between a first upper heater part 2 and second lower heater part 3.
  • the first electrically conductive layer 4 which is located under the first upper heater part 2 goes toward the upper external surface 12 located on the aerosol precursor material 1a.
  • the second electrically conductive layer 5 which is located on the second lower heater part 3 goes toward the lower external surface 12 located under the aerosol precursor material 1a.
  • the thickness T of the aerosol precursor material 1a is along vertical direction y.
  • the electrodes 41, 42, 43, 44 of the first conductive layer 4 are separated from each other by electrically non-conductive spaces 8a, 8b. They face respectively the electrodes 51, 52, 53, 54, of the second electrically conductive layer 5, which are also separated from each other by electrically non-conductive spaces 9a, 9b.
  • the electrically non-conductive spaces 8a, 8b of the first electrically conductive layer 4 and the electrically non-conductive spaces 9a, 9b of the second electrically conductive layer 5 are facing each other with respect to the median longitudinal axis A of the consumable article 1.
  • first electrically non-conductive space 8a between electrodes 41 and 42 and third electrically non-conductive space 8a between electrodes 43 and 44 have an identical length that is longer than non-conductive space 8b between electrodes 42 and 43.
  • electrodes 51, 52, 53, 54 of the second conductive layer 5 are separated from each other by electrically non-conductive spaces 9a, 9b.
  • the electrically non-conductive spaces 9a, 9b of the second electrically conductive layer 5 are not all identical, and in particular they do not have a same length along horizontal direction x parallel to the axis A of the consumable article 1.
  • first electrically non-conductive space 9a between electrodes 51 and 52 and third electrically non-conductive space 9a between electrodes 53 and 54 have an identical length that is shorter size than that of non-conductive space 9b between electrodes 52 and 53.
  • the respective lengths of first non-conductive spaces 8a of the first electrically conductive layer 4 and second electrically non-conductive space 9b of the second electrically conductive layer 5 are substantially equal.
  • the respective lengths of electrically non-conductive spaces 9a of the second electrically conductive layer 5 and second electrically non-conductive space 8b of the first electrically conductive layer 4 are substantially equal.
  • All electrodes 41-42-43-44 of first electrically conductive layer 4 and all electrodes 51-52-53-54 of second electrically conductive layer 5 are similar to each other.
  • Electrode 41 of first electrically conductive layer 4 is powered at a negative tension. Electrode 44 of the first electrically conductive layer 4 is powered at a positive tension. Electrodes 42 and 43 of the first electrically conductive layer 4 are not powered at any tension. Electrodes 51 to 54 of the second electrically conductive layer 5 are not powered at any tension.
  • Electrons e - flow (to the contrary of the electrical current), as is shown by the curved arrows, from one electrically conductive layer to the other and vice versa, through aerosol precursor material 1, progressing from negative tension (at left of figure 2C ) toward positive tension (at right of figure 2C ), mostly:
  • Fig. 3 shows a sectional view of an example of a heater H for an aerosol generating device according to a third embodiment of the invention to heat a consumable article 1 as described in reference to the 1 st and 2 nd embodiments to generate an inhalable aerosol.
  • the heater H comprises a first heater part 2 and a second heater part 3 comprising each an electrically conductive layer 4, 5 forming a contacting surface of the first and second heater parts 2, 3.
  • the electrically conductive layers 4 comprises in this 3 rd embodiment three electrodes 41, 42, 43, which are separated from each other by an electrically non-conductive space 8. These electrodes 41, 42, 43 face at least partly the opposite electrically conductive layer 5 of the second heater part 3, which comprises only two electrodes 51, 52, which are separated from each other by an electrically non-conductive space 9.
  • the electrically non-conductive spaces 8 of the first electrically conductive layer 4 are offset, and preferably symmetrical to each other, with respect to a vertical median plan M of the heater H on which the electrically non-conductive space 9 of the second electrically conductive layer 5 is centered.
  • the electrically non-conductive spaces 8, 9 of the first and second electrically conductive layer 4, 5 are all of the same dimensions in all directions X, Y, Z.
  • Electrode 41 of first electrically conductive layer 4 is powered at a negative tension. Electrode 43 of the first electrically conductive layer 4 is powered at a positive tension. Electrode 42 of the first electrically conductive layer 4 is not powered at any tension. Electrodes 51 and 52 of the second electrically conductive layer 5 are not powered at any tension. Electrodes 51 and 52 are of the same size as electrode 42 which is longer than electrodes 41 and 43.
  • Each electrode of the second electrically conductive layer 5 faces at least partially at least 2 electrodes of the first electrically conductive layer 5:
  • At least one electrode of the first electrically conductive layer 4 faces at least partially at least 2 electrodes of the second electrically conductive layer 5:
  • Electrons e - flow (to the contrary of the electrical current), as is shown by the curved arrows, from one electrically conductive layer to the other and vice versa, through aerosol precursor material 1, progressing from negative tension (at left of figure 3 ) toward positive tension (at right of figure 3 ), mostly:
  • Fig. 4 shows a sectional view of an example of a heater H for an aerosol generating device according to a fourth embodiment of the invention to heat a consumable article 1 as described in reference to all of the 1 st to 3 rd embodiments to generate an inhalable aerosol.
  • the heater H comprises a first heater part 2 and a second heater part 3 comprising each an electrically conductive layer 4, 5 forming a contacting surface of the first and second heater parts 2, 3.
  • the electrically conductive layers 4 comprises 4 electrodes 41, 42, 43, 44, which are separated from each other by an electrically non-conductive space 8 and which all face partly a single electrode 51 of the second electrically conductive layer 5.
  • the electrically non-conductive spaces 8 of the first electrically conductive layer 4 are all of the same dimensions in all directions X, Y, Z.
  • First electrically conductive layer 4 is supported by first heater part 2.
  • Electrodes of the first electrically conductive layer 4 are powered alternatively (in space) at a negative tension and at a positive tension, i.e. electrodes 41, 43 are powered at a negative tension while electrodes 42, 44 are powered at a positive tension.
  • Electrons e - flow (to the contrary of the electrical current), as is shown by the curved arrows, from one electrically conductive layer to the other and vice versa, through aerosol precursor material 1, progressing from negative tension (at left of figure 4 ) toward positive tension (in the middle of figure 4 , more on the left), and then again progressing from positive tension (in the middle of figure 4 , more on the left) toward negative tension (in the middle of figure 4 , more on the right), and then further again progressing from negative tension (in the middle of figure 4 , more on the right) toward positive tension (at right of figure 4 ), mostly:
  • Fig. 5A to 5C show an exploded view, a perspective view and a sectional view of a heater H for an aerosol generating device according to a fifth embodiment of the invention, in cooperation with a consumable article 1.
  • the heater H in that fifth embodiment is structurally identical to the one of the first embodiment of Fig. 1 . It thus comprises a first heater part 2 and a second heater part 3 comprising each an electrically conductive layer 4, 5 forming a contacting surface of the first and second heater parts 2, 3.
  • the first and second heater parts 2, 3 are arranged such that their respective electrically conductive layers 4, 5 are facing each other and are spaced apart from each other by a distance G, thereby defining a gap in between the electrically conductive layers 4, 5.
  • the electrically conductive layers 4, 5 form respectively a first set of electrodes 41, 42, 43, 44 separated from each other by a non-electrically conductive space 8 and a second set of electrodes 51, 52, 53, 54 separated from each other by a non-electrically conductive space 9.
  • the first set of electrodes 41, 42, 43, 44 is spaced apart from the second set of electrodes 51, 52, 53, 54 by distance G and the two sets of electrodes and their respective non-electrically conductive spaces 8, 9 are identical and facing each other symmetrically with respect to the longitudinal median axis A of the consumable article 1.
  • the consumable article 1 is identical to that described in relation to Fig. 1 to 4 and will not be described further in relation to that fifth embodiment of the heater H.
  • the consumable article 1 comprises at least one layer of aerosol precursor material 1a that has a thickness T substantially equal to the distance G between the electrically conductive layers 4, 5 of the heater H.
  • the consumable article is sandwiched in use between a first upper heater part 2 and second lower heater part 3.
  • the first electrically conductive layer 4 which is located under the first upper heater part 2 goes toward the upper external surface 12 located on the aerosol precursor material 1a.
  • the second electrically conductive layer 5 which is located on the second lower heater part 3 goes toward the lower external surface 12 located under the aerosol precursor material 1a.
  • the thickness T of the aerosol precursor material 1a is along vertical direction y.
  • Electrode 41 of first electrically conductive layer 4 is powered at a negative tension.
  • Electrode 51 of second electrically conductive layer 5 is powered at a negative tension.
  • Electrode 44 of the first electrically conductive layer 4 is powered at a positive tension.
  • Electrode 54 of the second electrically conductive layer 5 is powered at a positive tension.
  • Electrodes 42 and 43 of the first electrically conductive layer 4 are not powered at any tension.
  • Electrodes 52 and 53 of the second electrically conductive layer 5 are not powered at any tension.
  • Electrons e - flow (to the contrary of the electrical current), as is shown by the curved arrows, rather along both electrically conductive layers, all across the thickness of the aerosol precursor material 1, and through the aerosol precursor material 1, rather progressing from negative tension (at left of figure 5C ) toward positive tension (at right of figure 5C ), mostly:
  • each electrode 41 to 54 has been shown as being a single and flat surface.
  • each electrode 41 to 54 can also been shown as comprising two conductive strips shaped as two combs which are intricated within each other.
  • each electrode 41 to 54 can also been shown as comprising several conductive strips parallel to one another and equidistant from one another, these conductive strips being raised with respect to their common non-conductive flat support, these conductive strips being narrower than the spaces between these conductive strips.
  • each electrode 41 to 54 can also been shown as comprising several conductive strips parallel to one another and equidistant from one another, these conductive strips and their common non-conductive flat support making altogether a flat surface, these conductive strips being wider than the spaces between these conductive strips.

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EP22213590.7A 2022-12-14 2022-12-14 Ein heizer für eine aerosolerzeugungsvorrichtung mit konfiguration zum betrieb mit einem elektrisch leitfähigen verbrauchsartikel Pending EP4385346A1 (de)

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EP22213590.7A EP4385346A1 (de) 2022-12-14 2022-12-14 Ein heizer für eine aerosolerzeugungsvorrichtung mit konfiguration zum betrieb mit einem elektrisch leitfähigen verbrauchsartikel

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EP22213590.7A EP4385346A1 (de) 2022-12-14 2022-12-14 Ein heizer für eine aerosolerzeugungsvorrichtung mit konfiguration zum betrieb mit einem elektrisch leitfähigen verbrauchsartikel

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170164657A1 (en) * 2014-07-11 2017-06-15 Philip Morris Products S.A. Aerosol-forming cartridge comprising a tobacco-containing material
US20200229510A1 (en) 2019-01-21 2020-07-23 Altria Client Services Llc Capsules, heat-not-burn (hnb) aerosol-generating devices, and methods of generating an aerosol
WO2020165450A1 (en) 2019-02-15 2020-08-20 Philip Morris Products S.A. Aerosol-generating device having capacitance based power control
US10918136B2 (en) * 2015-09-24 2021-02-16 Philip Morris Products S.A. Aerosol-generating device with electrodes for measuring an electrical load
US11006668B2 (en) 2016-02-12 2021-05-18 Altria Client Services Llc Aerosol-generating system with electrodes
WO2022189452A1 (en) * 2021-03-10 2022-09-15 Jt International Sa Electrically conductive consumable
WO2022207743A1 (en) * 2021-03-30 2022-10-06 Jt International Sa Aerosol generation device with comb-shaped electrodes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170164657A1 (en) * 2014-07-11 2017-06-15 Philip Morris Products S.A. Aerosol-forming cartridge comprising a tobacco-containing material
US10918136B2 (en) * 2015-09-24 2021-02-16 Philip Morris Products S.A. Aerosol-generating device with electrodes for measuring an electrical load
US11006668B2 (en) 2016-02-12 2021-05-18 Altria Client Services Llc Aerosol-generating system with electrodes
US20200229510A1 (en) 2019-01-21 2020-07-23 Altria Client Services Llc Capsules, heat-not-burn (hnb) aerosol-generating devices, and methods of generating an aerosol
WO2020165450A1 (en) 2019-02-15 2020-08-20 Philip Morris Products S.A. Aerosol-generating device having capacitance based power control
WO2022189452A1 (en) * 2021-03-10 2022-09-15 Jt International Sa Electrically conductive consumable
WO2022207743A1 (en) * 2021-03-30 2022-10-06 Jt International Sa Aerosol generation device with comb-shaped electrodes

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