WO2022238295A1 - Ensemble et dispositif de génération d'aérosol - Google Patents

Ensemble et dispositif de génération d'aérosol Download PDF

Info

Publication number
WO2022238295A1
WO2022238295A1 PCT/EP2022/062427 EP2022062427W WO2022238295A1 WO 2022238295 A1 WO2022238295 A1 WO 2022238295A1 EP 2022062427 W EP2022062427 W EP 2022062427W WO 2022238295 A1 WO2022238295 A1 WO 2022238295A1
Authority
WO
WIPO (PCT)
Prior art keywords
receptacle
protrusion
generation device
aerosol generation
internal surface
Prior art date
Application number
PCT/EP2022/062427
Other languages
English (en)
Inventor
Jaakko MCEVOY
Christoph Lungenschmied
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 JP2023559763A priority Critical patent/JP2024517062A/ja
Priority to CN202280032178.7A priority patent/CN117320571A/zh
Priority to EP22728194.6A priority patent/EP4337043A1/fr
Priority to KR1020237037051A priority patent/KR20240006522A/ko
Publication of WO2022238295A1 publication Critical patent/WO2022238295A1/fr

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
    • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • 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
    • A24F40/42—Cartridges or containers for inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/48—Fluid transfer means, e.g. pumps

Definitions

  • the invention relates to an aerosol generation device and an aerosol generation set comprising the device and a replaceable article comprising vaporizable material.
  • a vaporizable material such as tobacco
  • susceptors which are embedded in the vaporizable material and are heated by one or more coils surrounding a receptacle adapted to accommodate the replaceable article.
  • susceptors are used in induction heating devices that are heated by eddy currents produced by surrounding coils and induced within the susceptors.
  • uniform heat distribution within the vaporizable material is an issue, as, firstly, cold air is continuously supplied from an air inlet. Secondly, the temperature is usually particularly high immediately around the susceptors, which are usually formed thin and generally extend in an airflow direction between the air inlet and an air outlet. This also holds true for other heating methods, such as those involving heating tracks, cups and/or blades. In these cases, the vaporizable material does not contain a heating element like a susceptor, but the above-described thermal gradient across the vaporizable material between inlet and outlet essentially remains the same.
  • This is configured to operate with a replaceable article, such as a tobacco stick, comprising a storage compartment containing a vaporizable material, such as tobacco, the storage compartment defining an air flow path extending between an inlet and an air outlet through the vaporizable material.
  • the aerosol generation device comprises a receptacle extending along a receptacle axis and defining a receptacle internal surface and being configured to receive the replaceable article in a space delimited by the receptacle internal surface so that the airflow path extends along the receptacle axis.
  • a heating system configured to heat the replaceable article received in the receptacle is provided.
  • the receptacle internal surface comprises at least one protrusion protruding from the receptacle internal surface and configured to reduce the cross-sectional area of the receptacle so as to compress a part of the airflow path of the storage compartment, when the article is received in the receptacle.
  • the or each protrusion defines a protrusion surface adjacent the receptacle internal surface forming an angle with the receptacle internal surface greater than 100 degrees along the entire protrusion in an airflow direction. Otherwise, the or each protrusion defines a protrusion surface adjacent the receptacle internal surface forming an angle with the receptacle internal surface greater than 100 degrees along at least an/the ascending portion of the protrusion in an airflow direction. This will avoid unwanted turbulences and recirculating eddies or vortices downstream of the protrusions, which are disadvantageous as vapor can be trapped in the vortices and condense.
  • the smooth shape also helps to maintain good contact between the receptacle and the replaceable article, which is for example advantageous, when resistive heating is utilized at the wall of the receptacle.
  • Preferred angle ranges at the point, as seen in a longitudinal cut view, where the protrusion emerges from the internal wall, are 100 to 175 degrees, with 130 to 170 degrees being preferred.
  • the feature that the protrusion surface forms an angle with the receptacle internal surface which is greater than 100 degrees along the entire protrusion in an airflow direction may mean that the value of the angle remains at values greater than 100 degrees along the entire protrusion in the airflow direction.
  • this feature may imply that the protrusion surface becomes shallower along the airflow direction compared to the angle at the point where the protrusion emerges from the internal wall, as long as the angle remains greater than 100 degrees along the entire protrusion in the airflow direction.
  • the feature that the protrusion surface forms an angle with the receptacle internal surface which is greater than 100 degrees along the entire protrusion in an airflow direction may mean that an angle between a straight line (tangent) at each point of the profile of the protrusion in a cross section of the protrusion along the airflow direction and the receptacle internal surface is greater than 100 degrees.
  • an angle between a straight line at a point close to the top portion of the protrusion and the receptacle internal surface may be close to 180 degrees, and thus greater than 100 degrees, because the straight line may be close to parallel with the receptacle internal surface in this case, as seen along the airflow direction.
  • the airflow direction may be understood as the direction from the air inlet to the air outlet in which air flows during use of the aerosol generation device.
  • the airflow direction may be parallel to the receptacle axis.
  • the described angle further provides a "smooth" shape of the protrusion, which for example allows the replaceable article to be inserted and removed from the receptacle without being damaged.
  • the effect, on which the present invention is based is similar to that of a venturi tube, as the compression or reduction in cross-sectional area of the airflow path leads to an acceleration of the air flowing through the replaceable article. This will remove heat from, for example, particularly hot areas and transport the heat in the form of heated air to cooler areas. This will make heating more uniform, which is advantageous with regard to an effective usage of the vaporizable material.
  • the protrusions additionally have the advantageous effect of securing the replaceable article in place.
  • the protrusions can have a radially and/or axially and/or circumferentially identical or different dimensions and/or constant or varying heights and they can be provided at axially and/or circumferentially offset or staggered positions. Further, protrusions having a longitudinal extension can be oriented with this extension parallel to the receptacle axis or with an angle to this axis. It is currently expected that a maximum number of protrusions is 64.
  • the shape of the protrusions can also be called aerodynamic.
  • the maximum length of the or each protrusion measured along the receptacle axis is between 5 and 75% of the receptacle length measured according to the receptacle axis, and preferably between 10 and 65% of this length, with 15 to 55% being further preferred.
  • the most preferred lengths can be around 20% of said receptacle length.
  • the desired "smooth" shape of the or each protrusion can particularly be obtained when it has an ascending portion, top portion and a descending portion.
  • the or each protrusion can typically be symmetric, as regards the ascending and descending portion, with respect to the top portion. Nevertheless, also asymmetrical shapes can be chosen.
  • an advantageous shape is expected for an ascending portion defining transversal dimensions gradually increasing from the receptacle internal surface until the top portion, and/or the descending portion defining transversal dimensions gradually decreasing from the top portion to the receptacle internal surface.
  • protrusions which are arranged on the receptacle internal surface axially and/or circumferentially.
  • the or each protrusion is arranged adjacent the air outlet.
  • the or each protrusion can be provided on the receptacle internal surface in a fixed manner, in particular integral with the receptacle wall, at least one protrusion can also be movable along the receptacle axis. Further, they can be clicked into place by the user, after the article has been inserted into the receptacle. This will help avoiding damage of the replaceable article, in particular a base of a stick-shaped article, which is inserted into the receptacle with the base in front.
  • the or each protrusion can also be movable along an axis perpendicular to the receptacle axis, in order to achieve the previously described effect. In any case, it is sufficient, if it protrudes from the receptacle internal surface.
  • the protrusion will constitute portions of the internal surface and will be smoothly connected with it, i.e. avoiding sharp edges and implying radii of curvature.
  • the invention is particularly useful in connection with an inductive heating system, wherein the storage compartment of the replaceable article comprises at least one susceptor.
  • the number of protrusions is equal to the number of susceptors.
  • heating can be unified, when a top portion of the or each protrusion faces the downstream end and/or the hottest part of the corresponding susceptor, when the replaceable article is received in the receptacle.
  • the heating system may comprise one or more heating elements extending along at least a part of the receptacle internal surface and the contact surface of at least one protrusion.
  • Fig. 1 is a perspective cut view of a first embodiment
  • Fig. 2 is a cut side view of the first embodiment
  • Fig. 3 is a cut side view of a second embodiment
  • Fig. 4 is a cut side view of a third embodiment
  • Fig. 5A to 5G are side and plan views of further embodiments of protrusions
  • Fig. 6 a cut side view of a further embodiment with a replaceable article inserted
  • Fig. 7 a cut side view of a further embodiment similar to that of Fig. 6;
  • Fig. 8 a cut side view of yet another embodiment with further portions of an aerosol generation device shown.
  • Figs. 9A, 9B are side views of embodiments of protrusions in support of the meaning of the angle between the protrusion surface and the receptacle internal surface.
  • a receptacle 10 of an aerosol generation device is essentially tube-shaped and adapted to accommodate a replaceable article, such as a tobacco stick.
  • air essentially flows through a tobacco stick along the receptacle axis, and will enter the receptacle 10 at an air inlet 12 in an essentially cold state.
  • the tobacco stick includes susceptors adapted to cooperate with one or more induction coils (not shown) around the receptacle so as to be heated and transfer the heat to the surrounding tobacco.
  • two protrusions 14 are formed at the same position along the axial direction and at diametrically opposite positions along the circumferential direction. Similar to a Venturi tube, airflow in the area of the protrusions, where the tobacco stick is correspondingly constricted, is accelerated, so that heated air can be quickly transported away from the particularly hot area surrounding the susceptors.
  • the protrusions have a smooth cross-sectional geometry, so that no undesired turbulences are created, and a tobacco stick can be inserted, sliding between the protrusions without risking damage of the tobacco stick.
  • the protrusions have an asymmetric shape with a steeper ascending portion, as viewed in the direction of flow, and a less steep descending portion. This particularly allows easy insertion of a tobacco stick in a direction opposite to the flow direction.
  • plural protrusions for example 12 protrusions are provided equidistantly along the circumference of the receptacle.
  • transversal dimensions of the ascending portion increase with a gradient higher as seen in the flow direction, than the gradient, with which these dimensions decrease in the descending portion as can be seen in the center part of Fig. 3, similar to a drop-shape.
  • plural protrusions can also be provided at different axial positions, which can be considered a staggered arrangement.
  • protrusions at different axial positions are additionally offset in circumferential direction.
  • plural protrusions can also be provided at more than two axial positions, and that the distance between protrusion positions in the circumferential direction can be the same over the entire circumference or can vary.
  • any arrangement of protrusions shown in the figures can be chosen with symmetric protrusions as shown in Fig. 1, 2 and 4, as well as asymmetric protrusions as shown in Fig. 3, including any further shapes shown in Fig. 5. In this context, when plural protrusions are present, they can all have the same or different shapes.
  • asymmetric fillet combined with a chamfer as ascending portion (C) symmetric fillet (D) asymmetric fillet(E), symmetric chamfer (F) and asymmetric chamfer (D)
  • Chevron and arrowhead essentially have a point at one end thereof and their shape as seen in a plan view can be described as essentially triangular.
  • a chevron has a cut out as seen in a plan view, on the side opposite the point.
  • a chamfer essentially has a flat, inclined surface as seen in a cross-sectional view, and a fillet is essentially oval or elliptic, as seen in a plan view. The flow direction will typically be from right to left in Fig. 5.
  • one or more protrusions can be formed by thickening the receptacle wall.
  • the receptacle wall can have a uniform wall thickness, and one or more protrusions can be formed as a convex shape inside the receptacle corresponding to a concave shape on the outside thereof.
  • each protrusion has a protrusion surface adjacent the receptacle internal surface which forms an angle a with the receptacle internal surface greater than 100°, especially in the embodiment of Fig. 2, 4 and 5, apart from 5B, this angle is significantly greater than 100° and remains that large along the entire protrusion as seen in an airflow direction.
  • each protrusion lacks any surfaces extending "steep" towards the receptacle internal surface which would create unwanted turbulences.
  • Figs. 9A and 9B illustrate two different configurations of the protrusion 14.
  • the protrusion 14 has a roof-like shape with a linearly ascending portion (portion comprising point A) and a linearly descending portion (portion comprising point B) along the airflow direction (indicated by the arrow).
  • the protrusion 14 has a semi-circular shape with an ascending portion becoming gradually shallower (portion comprising point A) and a descending portion becoming gradually steeper (portion comprising point B) along the airflow direction (indicated by the arrow).
  • the feature that the protrusion surface forms an angle a with the receptacle internal surface which is greater than 100 degrees (100°) along the entire protrusion 14 in an airflow direction means that an angle between a straight line (tangent) at each point of the profile of the protrusion 14 in a cross section of the protrusion along the airflow direction and the receptacle internal surface is greater than 100 degrees.
  • such straight line (tangent) is exemplarily shown at points A and B by the dashed lines.
  • the angle a is measured with respect to the receptacle internal surface upstream of the protrusion 14 with respect to the airflow direction.
  • the angle a is measured with respect to the receptacle internal surface downstream of the protrusion 14 with respect to the airflow direction. While the angle a remains the same at each point of the protrusion 14 in the ascending portion in Fig. 9A, it changes, i.e. becomes greater, when going along the airflow direction in the ascending portion of the protrusion 14 shown in Fig. 9B.
  • Fig. 6 shows a receptacle 10 with two diametrically protrusions 14 similar to those of Fig. 5D or F.
  • Fig. 6 additionally shows a replaceable article 16, such as a tobacco stick accommodated in the receptacle 10 and correspondingly compressed in the area of the protrusions 14.
  • This compression firstly, moves the tobacco strands 18 closer together in the area of the protrusions 14 and, secondly, bends susceptors 20 accommodated in the replaceable article 16.
  • These susceptors 20 may have a curved, convex shape already in the original state, i.e. without being compressed by the protrusions 14.
  • the convex shapes of two or more susceptors can face each other towards the center of the replaceable article 16.
  • the convex shape shown in the figure can be caused by the compression in the area of the protrusions. 14.
  • the cross-sectional area of the replaceable article 16 is smaller in the area of the protrusions 14, so that the flow velocity is increased, and heat is transported at a higher rate than in the area of the inlet and the outlet of the replaceable article shown.
  • the location of the susceptors which are typically thin strands of material heatable by a surrounding coil (not shown), can correspond to that of the protrusions 14 and can be essentially symmetrical thereto, as shown in Fig. 6, the susceptors can also be somewhat shifted towards the inlet 12.
  • each susceptor is somewhat closer to the inlet 12 of the receptacle 10 than the inlet end of each protrusion 14, and the susceptors cover about two thirds of the longitudinal extension of the protrusions.
  • the location of the susceptors 20 is symmetrical to that of the protrusion 14, and their inlet end is somewhat more remote from the inlet 12 of the receptacle than the inlet end of the protrusions 14, and their outlet end is somewhat more remote from the outlet of the receptacle than the outlet end of the protrusions 14.
  • Fig. 8 shows, downstream the outlet end of the receptacle 10, a support 22 having an airpath 24, as well as, downstream of the support 22, a filter 26.

Landscapes

  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Cookers (AREA)
  • Cleaning And Drying Hair (AREA)

Abstract

L'invention concerne un dispositif de génération d'aérosol conçu pour fonctionner avec un article remplaçable (16) comprenant un compartiment de stockage, le dispositif comprenant : - un contenant (10) s'étendant le long d'un axe de contenant (A), définissant une surface interne de contenant et conçu pour recevoir l'article remplaçable (16) ; - un système de chauffage conçu pour chauffer l'article remplaçable (16) lorsqu'il est reçu dans le contenant (10) ; le dispositif de génération d'aérosol étant caractérisé en ce que la surface interne de contenant comprend au moins une saillie (14) faisant saillie à partir de la surface interne de contenant et conçue pour comprimer une partie de la voie d'écoulement d'air du compartiment de stockage pour réduire sa surface de section transversale, lorsque l'article remplaçable (16) est reçu dans le contenant (10) ; la saillie (14) ou chaque saillie (14) définissant une surface de saillie adjacente à la surface interne de contenant et formant un angle avec la surface interne de contenant supérieur à 100° le long de toute la saillie (14) dans une direction d'écoulement d'air.
PCT/EP2022/062427 2021-05-10 2022-05-09 Ensemble et dispositif de génération d'aérosol WO2022238295A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2023559763A JP2024517062A (ja) 2021-05-10 2022-05-09 エアロゾル発生デバイス及びセット
CN202280032178.7A CN117320571A (zh) 2021-05-10 2022-05-09 气溶胶产生装置和套件
EP22728194.6A EP4337043A1 (fr) 2021-05-10 2022-05-09 Ensemble et dispositif de génération d'aérosol
KR1020237037051A KR20240006522A (ko) 2021-05-10 2022-05-09 에어로졸 발생 장치 및 세트

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21173010 2021-05-10
EP21173010.6 2021-05-10

Publications (1)

Publication Number Publication Date
WO2022238295A1 true WO2022238295A1 (fr) 2022-11-17

Family

ID=75887899

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/062427 WO2022238295A1 (fr) 2021-05-10 2022-05-09 Ensemble et dispositif de génération d'aérosol

Country Status (5)

Country Link
EP (1) EP4337043A1 (fr)
JP (1) JP2024517062A (fr)
KR (1) KR20240006522A (fr)
CN (1) CN117320571A (fr)
WO (1) WO2022238295A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2782463A2 (fr) * 2011-11-21 2014-10-01 Philip Morris Products S.a.s. Extracteur pour un dispositif de génération d'aérosol
EP3610741A1 (fr) * 2017-04-11 2020-02-19 KT & G Coporation Dispositif de génération d'aérosol
WO2020074600A1 (fr) * 2018-10-12 2020-04-16 Jt International S.A. Dispositif de génération d'aérosol et chambre de chauffage associée

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2782463A2 (fr) * 2011-11-21 2014-10-01 Philip Morris Products S.a.s. Extracteur pour un dispositif de génération d'aérosol
EP3610741A1 (fr) * 2017-04-11 2020-02-19 KT & G Coporation Dispositif de génération d'aérosol
WO2020074600A1 (fr) * 2018-10-12 2020-04-16 Jt International S.A. Dispositif de génération d'aérosol et chambre de chauffage associée

Also Published As

Publication number Publication date
KR20240006522A (ko) 2024-01-15
CN117320571A (zh) 2023-12-29
EP4337043A1 (fr) 2024-03-20
JP2024517062A (ja) 2024-04-19

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