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WO2024200669A1 - Dispositif de génération d'aérosol comprenant une barrière thermique et ensemble de génération d'aérosol associé - Google Patents

Dispositif de génération d'aérosol comprenant une barrière thermique et ensemble de génération d'aérosol associé Download PDF

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Publication number
WO2024200669A1
WO2024200669A1 PCT/EP2024/058508 EP2024058508W WO2024200669A1 WO 2024200669 A1 WO2024200669 A1 WO 2024200669A1 EP 2024058508 W EP2024058508 W EP 2024058508W WO 2024200669 A1 WO2024200669 A1 WO 2024200669A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol generating
mouthpiece
aerosol
article
thermal break
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/EP2024/058508
Other languages
English (en)
Inventor
Erik SNIJDER
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 KR1020257032066A priority Critical patent/KR20250159023A/ko
Priority to CN202480023216.1A priority patent/CN120882323A/zh
Publication of WO2024200669A1 publication Critical patent/WO2024200669A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • 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
    • 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
    • A24F40/485—Valves; Apertures

Definitions

  • Aerosol generating device comprising a thermal break and associated aerosol generating assembly
  • the present invention concerns an aerosol generating device.
  • the present invention also concerns an aerosol generating assembly comprising the aerosol generating device.
  • the aerosol generating device is configured to operate with an aerosol generating article, for example a flat-shaped tobacco article, which comprises for example a solid substrate able to form aerosol when being heated.
  • an aerosol generating article for example a flat-shaped tobacco article, which comprises for example a solid substrate able to form aerosol when being heated.
  • aerosol generating devices also known as heat-not-burn devices, is adapted to heat, rather than burn, the substrate by conduction, convection and/or radiation, to generate aerosol for inhalation.
  • reduced-risk or modified-risk devices also known as vaporisers
  • vaporisers have grown rapidly in the past few years as an aid to assist habitual smokers wishing to quit smoking traditional tobacco products such as cigarettes, cigars, cigarillos, and rolling tobacco.
  • Various devices and systems are available that heat or warm vaporizable substances as opposed to burning tobacco in conventional tobacco products.
  • a commonly available reduced-risk or modified-risk device is the heated substrate aerosol generation device or heat-not-burn device.
  • Devices of this type generate aerosol or vapour by heating an aerosol substrate that typically comprises moist leaf tobacco or other suitable vaporizable material to a temperature typically in the range 150°C to 350°C. Heating an aerosol substrate, but not combusting or burning it, releases aerosol that comprises the components sought by the user but not the toxic and carcinogenic byproducts of combustion and burning.
  • the aerosol produced by heating the tobacco or other vaporizable material does not typically comprise the burnt or bitter taste resulting from combustion and burning that can be unpleasant for the user and so the substrate does not therefore require the sugars and other additives that are typically added to such materials to make the smoke and/or vapour more palatable for the user.
  • Tobacco articles, usable with such type of aerosol generating devices can take various forms. Some of them can present an elongated stick or any other suitable shape, like for example a flat shape. Generally, such a tobacco article is received at least partially in a heating chamber of the device which comprises one or several heaters to heat the tobacco article.
  • the body of some aerosol generating devices can become particularly hot while operating with a tobacco article. This can conduct to a poor user’s experience and can in some cases even injure the user. Overheating can be particularly inconvenient for the user in the parts of the device intended to be in contact with the user’s lips such as a mouthpiece.
  • One of the aims of the invention is to propose an aerosol generating device avoiding overheating of its body and notably parts of the aerosol generating device intended to be in contact with the user’s body.
  • the user’s experience can thus be considerably improved.
  • the invention relates to an aerosol generating device comprising:
  • a heating chamber arranged in the device body and comprising an open end defining a chamber opening suitable for insertion of the aerosol generating article at least partially in an internal volume of the heating chamber;
  • a mouthpiece extending along the device axis and mounted on the device body to cover at least partially the chamber opening, and comprising: a contact part comprising an aerosol outlet and designed to be in contact with user’s lips and/or mouth; a thermal break extending along the device axis between a proximal delimiting plane and a distal delimiting plane, both delimiting planes being perpendicular to the device axis, the proximal delimiting plane being closer to the aerosol outlet than the distal delimiting plane according to the device axis; the mouthpiece further comprising a receiving section configured to receive a mouthpiece portion of the aerosol generating article so as the mouth end of the tobacco article is positioned farther from the aerosol outlet according to the device axis than the proximal delimiting plane of the thermal break.
  • the aerosol generating article is positioned below at least the proximal delimiting plane of the thermal break.
  • the mouth end of the tobacco article is positioned between the proximal delimiting plane and the distal delimiting plane of the thermal break.
  • the mouth end of the tobacco article is positioned below the distal delimiting plane of the thermal break.
  • the aerosol generating article is positioned farther from at least one surface of the thermal break. This allows reducing of the mouthpiece’s temperature during the operation of the device in comparison with the case where the aerosol generating article is positioned at the same level as the thermal break. Thus, it is possible to avoid overheating of the device and ensure a better user experience.
  • This particular position of the aerosol generating article in respect with the thermal break is achieved by adapting accordingly the receiving section of the mouthpiece.
  • a delimiting plane a plane perpendicular to the device axis which delimits the thermal break according to the device axis.
  • a delimiting plane corresponds to a delimiting surface of the thermal break (for example its internal surface) when this surface is substantially plane and extends substantially perpendicularly to the device axis.
  • the corresponding delimiting plane comprises only a part of the delimiting surface, advantageously the extreme points of this surface according to the device axis.
  • the receiving section is configured to receive the mouthpiece portion of the aerosol generating article so as the mouth end of the tobacco article is positioned farther from the aerosol outlet according to the device axis than the distal delimiting plane of the thermal break.
  • the entire aerosol generating article is positioned below the thermal break.
  • the mouthpiece s temperature during the operation of the device can further be reduced.
  • the receiving section is configured to receive the mouthpiece portion of the aerosol generating article so as the mouth end of the tobacco article is positioned according to the device axis at a distance from the distal delimiting plane of the thermal break. According to some embodiments said distance is less than 75%, advantageously 50% and preferably 25%, of the total length of the tobacco article according to the device axis then it is inserted at least partially in the heating chamber.
  • the distance between the distal delimiting plane of the thermal break and the mouth end of the tobacco article when it is received in the heating chamber can advantageously be adapted to reduce the mouthpiece’s temperature while ensuring an acceptable level of condensation inside the mouthpiece.
  • positioning the mouth end of the tobacco article as far as possible from the thermal break would extend a conducting section of the mouthpiece conducting aerosol until the aerosol outlet. This can lead to a high level of condensation inside the mouthpiece.
  • said distance is adapted to reduce the temperature of the mouthpiece without leading to a significant level of condensation. In some cases, this distance can be further adapted to avoid condensation.
  • the mouthpiece further comprises a support part extending substantially perpendicularly to the device axis and mounted on the open end of the device body; the thermal break being arranged between the support part and the contact part.
  • the support part of the mouthpiece can be used to mount the mouthpiece on the device body.
  • the support part can for example cover an open end of the device body and form a collar covering the open end.
  • the support part can be provided or can cooperate with pressure exerting means to be firmly fixed on the device body and to push the aerosol generating article in the heating chamber.
  • Providing the thermal break between the support part and the contact part of the mouthpiece can be particularly advantageous since the thermal break can be substantially invisible for the user. Additionally, provided with such an arrangement of the thermal break, the contact part of the mouthpiece can be extended to avoid contact of the user’s lips with the thermal break.
  • the thermal break defines a groove formed in a connection zone between the support part and the contact part of the mouthpiece.
  • the groove extends around a central hole extending through both contact part and support part.
  • the thermal break forms an air gap between at least external surfaces of the support and contact parts of the mouthpiece. This provides an efficient thermal barrier avoiding overheating of the contact part of the mouthpiece. The efficiency of this thermal barrier can be further increased when the groove extends entirely around the central hole of the mouthpiece.
  • the thermal break is configured to minimize the contact area and/or connection part between the contact part and the support part of the mouthpiece.
  • heat transfer from the support part to the contact part can further be reduced.
  • the temperature of the part of the mouthpiece in contact with the user’s lips can be reduced.
  • the depth of the groove i.e. its dimension extending perpendicularly to the device axis
  • the depth can for example be chosen as a maximal value allowing the different parts of the mouthpiece (for example the contact part and the support part) to be assembled together in use without breaking the structure of the mouthpiece.
  • This maximal value can be determined based on the properties of the material forming the mouthpiece as well as on the dimensions of the central hole extending through the mouthpiece.
  • the groove can be reinforced by a reinforcement structure and/or material to ensure the necessary strength of the mouthpiece avoiding its breaking.
  • the depth of the groove can be at least 10%, advantageously 20%, more advantageously 25% and preferably 30%, of the maximal total dimension of the contact part of the mouthpiece, measured perpendicularly to the device axis.
  • the thermal break comprises a material thermally isolating the support part from the contact part.
  • the efficiency of the thermal break can thus be adapted based on the nature of the isolating material.
  • Such material presents a low thermal conductivity and can for example comprise various industrially-used insulator materials including porous and fibrous materials.
  • Such a material has a smaller thermal conductivity than the mouthpiece.
  • Such a material can be at least partially transparent.
  • the contact part is formed by a solid part of the mouthpiece extending radially in respect with the device axis between an inner surface delimiting a central hole and an external surface of the mouthpiece.
  • the contact part presents a solid part of the mouthpiece deprived of cavities or protrusions except the central hole.
  • at least the contact part and the support part of the mouthpiece can form a single piece formed for example by moulding process.
  • the thermal break can be formed by the same moulding process.
  • the mouthpiece further comprises a gripping part configured to grip an external surface of the aerosol generating article to hold at least a part of the tobacco article inside the heating chamber.
  • At least a part of the aerosol generating article (for example the mouthpiece portion) can be first gripped by the gripping part. Then, the other part of the aerosol generating device (for example the tobacco portion) can be inserted in the heating chamber while mounting the mouthpiece on the device body. The extraction of the aerosol generating article from the heating chamber can be done by unmounting the mouthpiece from the device body. Thus, insertion/extraction of the aerosol generating device can be easily done without direct contact with the aerosol generating article.
  • the receiving section is formed in a central hole extending through both contact part and gripping part of the mouthpiece; the central hole further defining a conducting section for conducting aerosol until the aerosol outlet and a stop preventing the tobacco article from passing from the receiving section to the conducting section.
  • the stop is positioned farther from the aerosol outlet according to the device axis than the proximal delimiting plane of the thermal break. Thanks to these features, the aerosol generating article can be accurately fixed inside the heating chamber so as to ensure its desired position in respect with the thermal break. This respective position can thus be defined by the position of the stop.
  • the stop can present any appropriate shape and form for example a protrusion or a shouldered transition between the receiving and conducting sections of the mouthpiece.
  • the heating chamber forms a flat shape.
  • the aerosol generating article also forms a flat shape.
  • flat shape of the heating chamber or of the aerosol generating article it is understood that it extends between two first parallel longitudinal planes and two second parallel longitudinal planes perpendicular to the first parallel longitudinal planes, the distance between the second parallel longitudinal planes being at least 3 times, advantageously 5 times and preferably 10 times, greater than the distance between the first parallel longitudinal planes.
  • the heating chamber is adapted to receive an aerosol generating article having a flat shape.
  • the flat shape of the heating chamber is particularly advantageous to ensure a fast preheating phase of the aerosol generating article.
  • the article can be ready to generate vapor only a few seconds (for example 5 s or 15 s or 20 s) after activating the heating chamber.
  • the present invention also relates to an aerosol generating assembly comprising:
  • an aerosol generating article configured to operate with the aerosol generating device.
  • FIG. 1 is a perspective view of an aerosol generating assembly, the aerosol generating assembly comprising an aerosol generating device according to a first example of the invention and an aerosol generating article usable with the aerosol generating device;
  • - Figure 2 is a perspective view of the aerosol generating article of Figure 1 ;
  • FIG. 3 is a partial cross-sectional view of the aerosol generating assembly of Figure 1 according to plane III;
  • FIG. 4 is a partial cross-sectional view of the aerosol generating assembly of Figure 1 according to plane IV;
  • FIG. 5 is a schematic view of an airflow channel extending inside the aerosol generating assembly of Figure 1 ;
  • FIG. 6 is a schematic view of a heating surface arranged inside the aerosol generating device of Figure 1 ;
  • FIG. 7 is view similar to the view of Figure 3 where the aerosol generating assembly is according to a second example of the invention.
  • the term “aerosol generating device” or “device” may include a vaping device to deliver an aerosol to a user, including an aerosol for vaping, by means of a heater element explained in further detail below.
  • the device may be portable. “Portable” may refer to the device being for use when held by a user.
  • the device may be adapted to generate a variable amount of aerosol, e.g. by activating the heater element for a variable amount of time (as opposed to a metered dose of aerosol), which can be controlled by a trigger.
  • the trigger may be user activated, such as a vaping button and/or inhalation sensor.
  • the inhalation sensor may be sensitive to the strength of inhalation as well as the duration of inhalation to enable a variable amount of vapour to be provided (so as to mimic the effect of smoking a conventional combustible smoking article such as a cigarette, cigar or pipe, etc.).
  • the device may include a temperature regulation control to drive the temperature of the heater and/or the heated aerosol generating substance (aerosol pre-cursor) to a specified target temperature and thereafter to maintain the temperature at the target temperature that enables efficient generation of aerosol.
  • aerosol may include a suspension of vaporizable material as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. Aerosol herein may generally refer to/include a vapour. Aerosol may include one or more components of the vaporizable material.
  • vaporizable material may refer to a smokable material which may for example comprise nicotine or tobacco and an aerosol former.
  • tobacco may take the form of various materials such as shredded tobacco, granulated tobacco, tobacco leaf and/or reconstituted tobacco.
  • Suitable aerosol formers include: a polyol such as sorbitol, glycerol, and glycols like propylene glycol or triethylene glycol; a non-polyol such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, esters such as triacetin, triethylene glycol diacetate, triethyl citrate, glycerin or vegetable glycerin.
  • the aerosol generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol.
  • the substrate may also comprise at least one of a gelling agent, a binding agent, a stabilizing agent, and a humectant.
  • FIG 1 shows an aerosol generating assembly 10 comprising an aerosol generating device 1 1 according to a first example and an aerosol generating article 12, also called tobacco article 12.
  • the aerosol generating device 11 is intended to operate with the tobacco article 12 which is shown in more detail in Figure 2.
  • the tobacco article 12 is a flat-shaped tobacco article presenting for example a flat-shaped cuboid extending along an article axis X and having external dimensions LxWxD.
  • the length L of the article 12 according to the article axis X equals substantially to 33 mm while its width W and depth D are substantially equal respectively to 12 mm and 1 ,2 mm.
  • the values L, W and D can be selected within a range of +/- 40%, for example.
  • the depth D of the tobacco article 12 is formed by a pair of parallel walls 13A, 13B, called hereinafter narrow walls 13A, 13B, and the width W of the tobacco article 12 is formed by a pair of parallel walls 14A, 14B, called hereinafter wide walls 14A, 14B.
  • the edges between the wide and narrow walls 13A, 13B, 14A, 14B can be rounded.
  • the tobacco article 12 can have any other suitable flat shape and/or external dimensions.
  • the tobacco article 12 can present any other suitable shape, as for example a stick shape, having substantially circular or oval cross-section.
  • the tobacco article 12 comprises a tobacco portion 15 and a mouthpiece portion 16 arranged along the article axis X.
  • the tobacco portion 15 may for example be slightly longer than the mouthpiece portion 16.
  • the length L2 of the tobacco portion 15 according to the article axis X may be substantially equal to 18 mm.
  • the width W2 of the tobacco portion 15 is substantially equal to the width W of the tobacco article 12.
  • the length L3 of the mouthpiece portion 16 according to the article axis X may be substantially equal to 15 mm.
  • the values L2 and L3 can be selected within a range of +/- 40%, for example.
  • the tobacco portion 15 defines an abutting end 18 of the article 12 and the mouthpiece portion 16 defines a mouth end 20 of the article 12.
  • the tobacco portion 15 and the mouthpiece portion 16 may be fixed one to the other by a wrapper 21 extending around the substrate axis X.
  • the wrapper 21 forms the narrow and wide walls 13A, 13B, 14A, 14B of the tobacco article 12.
  • the wrapper 21 is formed from a same wrapping sheet.
  • the wrapper 21 is formed by separate wrapping sheets wrapping separately the portions 15, 16 and fixed one to the other by any other suitable mean.
  • the wrapper 21 may, for example, comprise paper and/or non-woven fabric and/or aluminium foil.
  • the wrapper 21 may be porous or air impermeable and forms a plurality of airflow channels extending inside the article 12 between the abutting end 18 and the mouth end 20.
  • the mouthpiece portion 16 comprises a core 27 intended to act for example as a cooler to cool slightly the vapour before it is inhaled by the user.
  • the core 27 may comprise for this purpose for example corrugated paper.
  • the core 27 may be formed through an extrusion and/or rolling process into a stable shape.
  • the core 27 is arranged inside the mouthpiece portion 16 to be entirely in contact with the internal surface of the wrapper 21 delimiting this mouthpiece portion 16. Additionally or alternatively, the core 27 acts as a filter.
  • the tobacco portion 15 comprises a vaporizable material and is intended to be heated by a heating chamber, as it will be explained in further detail below.
  • the aerosol generating device 11 comprises a device body 40 extending along a device axis Y between an open end 41 and a closed end 42.
  • the aerosol generating device 1 1 further comprises a mouthpiece 43 mounted on the open end 41 of the device body 40.
  • the mouthpiece 43 and the device body 40 form advantageously two different pieces.
  • the mouthpiece 43 is designed to be fixed on a support 44 defined by the open end 41 of the device body 40, as it is shown in Figure 3.
  • the support 44 defines for example a wall extending perpendicularly to the device axis Y and defining in its centre an opening to the heating chamber as it will be explained in further detail below.
  • the support 44 may particularly extend inwardly from lateral walls forming the device body 40.
  • the mouthpiece 43 comprises a contact part 46, a support part 47 and a gripping part 48. These parts 46 to 48 are arranged successively according to the device axis Y and define a central hole 49 extending through each of these parts 46 to 48. The contact part 46 and the gripping part 48 protrudes from different sides of the support part 47, according to the device axis Y.
  • the support part 47 of the mouthpiece 43 forms for example a collar covering partially the open end 41 of the device body 40.
  • the collar defines an external surface extending for example substantially perpendicularly to the device axis Y and an internal surface opposite to the external surface and facing the open end 41 of the device body 40.
  • the support part 47 is designed to exert pressure on the support 44 of the device body 40 using any suitable pressure exerting means 51.
  • the pressure exerting means 51 comprises a first magnetic element arranged at the periphery of the support 44 and a second magnetic element arranged for example on the internal surface of the support part 47 of the mouthpiece 43.
  • At least one of the first and the second magnetic elements comprises for example a permanent magnet whereas the other element comprises a permanent magnet of opposed polarity and/or a ferromagnetic material.
  • the pressure exerting means 51 can have any other appropriate structure suitable to abut the mouthpiece 43 against to the device body 40.
  • any other means able to be engaged one with the other can be arranged at the periphery of the support 44 and the internal surface of the support part 47 of the mouthpiece 43.
  • the pressure exerting means 51 can have a different structure and arrangement in respect with the device body 40. An example of such a structure will be explained below in relation with a second example of the invention.
  • the contact part 46 of the mouthpiece 43 is designed to be in contact with the user’s lips and/or mouth. For this purpose, it can form an appropriate ergonomic shape.
  • the contact part 46 has a narrowing shape from the support part 47 toward its top surface, along the device axis Y.
  • the contact part 46 can have a shape of truncated cone.
  • the contact part 46 forms an aerosol outlet 50 extending the central hole 49 and adapted to deliver aerosol formed in the heating chamber as it will be explained in further detail below.
  • a thermal break 53 is formed between the contact part 46 and the support part 47 of the mouthpiece 43.
  • the thermal break 53 extends along the device axis Y between a proximal delimiting plane 54 and a distal delimiting plane 55, both delimiting planes 54, 55 being substantially perpendicular to the device axis Y.
  • each delimiting plane 54, 55 corresponds to a surface of the thermal break 53 delimiting axially this thermal break 53.
  • each surface delimiting the thermal break 53 is substantially plane and extends substantially perpendicularly to the device axis Y.
  • the or each delimiting plane can be non-plane and/or be inclined in respect with the device axis.
  • the corresponding delimiting plane includes only extreme points of this delimiting surface (for example only peripheral points).
  • the length of extension of the thermal break according to the device axis Y is denoted by 5 in Figure 3. Additionally, the proximal delimiting plane 54 is closer to the aerosol outlet 50 than the distal delimiting plane 55 according to the device axis Y. In other words, the distance F1 between the aerosol outlet 50 and the proximal delimiting plane 54 according to the device axis Y is less than the distance F2 between the aerosol outlet 50 and the distal delimiting plane 55 according to the device axis Y.
  • the thermal break 53 is formed for example by a groove extending around the central hole 49 and formed in a connection zone between the support part 47 and the contact part 46 of the mouthpiece 43.
  • the groove is delimited along the device axis Y by the proximal and distal delimiting planes 54, 55.
  • the thermal break 53 minimizes the contact area and/or connection part between the contact part 46 and the support part 47 of the mouthpiece 43.
  • the thermal break 53 can comprise or can be filled with a material thermally isolating the support part 47 from the contact part 46.
  • the gripping part 48 is designed to hold at least a part of the tobacco article 12 inside the heating chamber 60, as it is shown in Figure 3.
  • the gripping part 48 is designed to receive in the central hole 49 at least a part of the mouthpiece portion 16 of the tobacco article 12, as it is shown in Figure 3.
  • the central hole 49 defines a receiving section 56 and a conducting section 57.
  • the receiving section 56 is adapted to receive at least a part of the mouthpiece portion 16 of the tobacco article 12 and defines a cross-sectional shape which is complementary to the external shape of the mouthpiece portion 16 of the tobacco article 12. Particularly, in case of a flat-shaped tobacco article 12, the receiving section 56 of the central hole 49 has also a flat shape, advantageously a rectangular flat shape.
  • the conducting section 57 is configured to conduct aerosol from the mouth end 20 of the tobacco article 12 until the aerosol outlet 50.
  • the central hole 49 further defines a stop 59 preventing the tobacco article 12 from passing from the receiving section 56 to the conducting section 57 while inserting the tobacco article 12 into the gripping part 48.
  • the stop 59 can for example be formed by a transversal protrusion in the central hole 49.
  • the conducting section 57 presents a cross-sectional area which is smaller than the cross- sectional are of the receiving section 56.
  • the stop 59 is formed by a shoulder formed between the conducting section 57 and the receiving section 56.
  • the distance between the stop 59 and the aerosol outlet 50 according to the device axis Y is denoted by F3 in Figure 3.
  • the stop 59 is arranged so as F1 ⁇ F3 ⁇ F2.
  • the mouth end 20 of the tobacco article 12 is positioned farther from the aerosol outlet 50 according to the device axis Y than the proximal delimiting plane 54 but closer to the aerosol outlet 50 than the distal delimiting plane 55.
  • the tobacco mouth end 20 of the tobacco article 12 is positioned between the proximal and distal delimiting planes 54, 55.
  • the stop 59 is arranged so as F1 ⁇ F2 ⁇ F3.
  • the mouth end 20 of the tobacco article 12 is positioned farther from the aerosol outlet 50 according to the device axis Y than each of the proximal and distal delimiting planes 54, 55.
  • the distance F4 between the distal delimiting plane 55 and the stop 59 is non-zero and can for example be chosen as a function of the total length L of the tobacco article 12 or of the length L3 of the mouthpiece portion 16 or of the length L2 of the tobacco portion 15.
  • the distance F4 is less than 75%, advantageously 50% and preferably 25%, of the total length L of the tobacco article 12.
  • the gripping part 48 forms an air gap with walls of the heating chamber 60.
  • the heating chamber 60 may define an enlarged section adjacent to an open end of the chamber 60.
  • this enlarged section has an enlarged cross-sectional shape in comparison with the cross-sectional shape of the part of the heating chamber 60 receiving the tobacco portion 15 of the tobacco article 12, i.e. in comparison with the part of the heating chamber 60 adjacent to its closed end.
  • the device body 40 delimits an internal space of the device 1 1 receiving various elements designed to carry out different functionalities of the device 1 1 .
  • This internal space can for example receive a battery for powering the device 11 , a controller for controlling the operation of the device 1 1 , a heating chamber 60 for heating the tobacco portion 15 of the tobacco article 12, etc.
  • a heating chamber 60 for heating the tobacco portion 15 of the tobacco article 12, etc.
  • only the heating chamber 60 will be explained in further detail in reference to Figures 3 to 6.
  • the heating chamber 60 defines a mounting zone 61 adapted to attach the heating chamber 60 to the device body 40 and a heating zone 62 adapted to heat the tobacco portion 15 of the tobacco article 12. Additionally, as it is shown in Figures 3 to 5, the mounting zone 61 is also adapted to receive at least partially the mouthpiece portion 16 of the tobacco article 12. In the preferred example, the heating chamber 60 has a flat shape.
  • the heating chamber 60 may also form a substantially cuboid shape extending along the device axis Y and comprising a pair of parallel narrow walls 63A, 63B (shown in Figure 4) extending along the device axis Y, a pair of parallel wide walls 64A, 64B (partially shown in Figure 3) extending also along the device axis Y and a bottom wall 68 adjacent to each of said walls and extending perpendicularly to the device axis Y.
  • the walls 63A, 63B, 64A, 64B, 68 delimit an internal volume of the heating chamber 60.
  • the bottom wall 68 forms thus a closed end of the chamber 60.
  • the heating zone 62 of the heating chamber 60 is adjacent to the closed end of the heating chamber 60.
  • the heating chamber 60 defines an open end configured to receive the tobacco article 12 via a chamber opening 69 so as the corresponding wide walls 14A, chamber 60, the corresponding narrow walls 13A, 13B of the tobacco article 12 face the corresponding narrow walls 63A, 63B of the heating chamber 60 and the abutting end 18 of the tobacco article 12 abuts against the bottom wall 68 or at least a rib extending from this bottom wall 68.
  • the abutting end 18 faces the bottom wall 68 without being in contact with it.
  • the flat-shaped heating chamber 60 is thus configured to receive the tobacco article 12 so as the narrow wall 13A (respectively 13B) of the tobacco article 12 faces the narrow wall 63B (respectively 63A) of the heating chamber 60, and the wide wall 14A (respectively 14B) of the tobacco article 12 faces the wide wall 64B (respectively 64A) of the heating chamber 60.
  • the facing wide walls 14A, 14B, 64A, 64B and the facing narrow walls 13A, 13B, 63A, 63B can be at least partially in contact one with the other or spaced one from the other.
  • the facing narrow walls 13A, 13B, 63A, 63B form a gap between them suitable for conducting an airflow, as it will be explained in further detail below.
  • the mounting zone 61 of the heating chamber 60 is adjacent to the open end of the heating chamber 60.
  • the narrow walls 63A, 63B and/or the wide walls 64A, 64B are shaped to form the enlarged section of the heating chamber 60 as explained above.
  • the narrow walls 63A, 63B and/or the wide walls 64A, 64B can extend substantially parallel between them with a first distance d1 (respectfully D1 ) through the heating zone 62 of the heating chamber 60, then form a shoulder section enlarging this distance d1 (respectfully D1 ) to a distance d2 (respectfully D2) and then extend parallel between them with the distance d2 (respectfully D2) through the mounting zone 61 of the heating chamber 60.
  • the enlarged section can substantially correspond to the mounting zone 61 of the heating chamber 60.
  • the heating chamber 60 together with the device body 40 and the mouthpiece 43 defines an airflow channel 70 passing through the device 1 1 and the tobacco article 12 between one or several air inlets 71 until the aerosol outlet 50 extending the central hole 49 as explained above.
  • the airflow channel 70 comprises an upstream part extending between the air inlets 71 and the closed end of the heating chamber 60, and a downstream part extending between the closed end of the heating chamber 60 and the aerosol outlet 50.
  • the downstream part extends advantageously through both tobacco and mouthpiece portions 15, 16 of the tobacco article 12. It can also extend through the central hole 49 formed by the mouthpiece 43.
  • the upstream part extends advantageously through the mouthpiece 43 and then inside the heating chamber 60, advantageously through the mounting zone 61 and the gaps formed between the facing narrow walls 13A, 13B, 63A, 63B, before achieving the closed end of the heating chamber 60.
  • the upstream part of the airflow channel turns at substantially 180° to join the downstream part.
  • the upstream part of the airflow channel 70 passes entirely outside the heating chamber 60 and joins the downstream part for example through holes formed at the closed end of the heating chamber 60.
  • the air inlets 71 can be formed on the external surface of the support part 47 of the mouthpiece 43.
  • these air inlets 71 can be formed by holes extending through the support part 47 of the mouthpiece 43 and opening to the enlarged section of the heating chamber 60.
  • the holes inside the support part 47 can for example be inclined in respect with the device axis Y.
  • the support part 47 defines two holes forming the air inlets 71 on different sides of the contact part 46 having an elongated shape.
  • the mounting zone 61 forms the unique attaching zone of the heating chamber 60 to the device body 40.
  • the mounting zone 61 comprises a pair of protruding parts 80A, 80B extending outwardly from the narrow walls 63A, 63B of the heating chamber 60 as it is shown in Figure 4.
  • Each protruding part 80A, 80B is configured to be engaged with a pin 82A, 82B fixed to the device body 40.
  • each pin 82A, 82B can extend perpendicularly to the device axis Y, for example perpendicularly to a plane parallel to the wide walls 64A, 64B of the heating chamber 60.
  • Each protruding part 80A, 80B can form a mounting ear defining a lateral opening configured to receive the corresponding pin 82A, 82B to attach the heating chamber 60.
  • each mounting ear extends partially around the corresponding pin 82A, 82B, for example according to an angle comprised between 180° and 270°.
  • the heating chamber 60 further comprises a thermal insulator arranged between the heating zone 62 and the mounting zone 61 for example on the external surface of the walls 63A, 63B, 64A, 64B delimiting the heating chamber 60.
  • a thermal insulator can for example comprise superwool or aerogel.
  • this thermal insulator can be formed by vacuum or an air chamber, a sheet(s), powders, etc.
  • the heating chamber 60 further comprises at least one heating surface 90 forming at least partially one of the wide walls 64A, 64B of the heating chamber 60.
  • the heating chamber 60 comprised two heating surfaces 90 (only one is visible in Figure 6) forming at least partially the opposite wide walls 64A, 64B of the heating chamber 60.
  • each heating surface 90 is designed to be in contact with or face the tobacco portion 15 of the tobacco article 12, in the heating zone 62 of the heating chamber 60.
  • each heating surface 90 extends according to the whole area of the heating zone 62 in projection on a plane parallel to each of the wide walls 64A, 64B.
  • the length of each heating surface 90 according to the device axis Y is at least equal to length L2 of the tobacco portion 15 and the width of each heating surface 90 is at least equal to the width W2 of the tobacco portion 15.
  • the or each heating surface 90 can be formed by a plate forming the corresponding wide wall 64A, 64B of the heating chamber 60. According to another embodiment, the or each heating surface 90 is formed by a flexible film attached for example to a plate forming the corresponding wall 64A, 64B of the heating chamber 60. According to still another embodiment, the or each heating surface 90 is formed by a long strip of flexible heater comprising two separate track patterns and wound around the heating chamber 90.
  • Each heating surface 90 comprises a pair of contacts 92 connected to the battery of the device and heating circuits 94 extending between the contacts along the whole heating surface 90.
  • the aerosol generating device 11 further comprises a seal 95 arranged between the mounting zone 61 of the heating chamber 60 and the mouthpiece 43.
  • the seal 95 can have an oval or rectangular shape and extend along the periphery of the opening formed by the opened end of the heating chamber 60. In each its cross-section, the seal 95 forms advantageously a rectangular shape. This means that the seal 95 forms two opposite substantially flat surfaces which are substantially perpendicular to the device axis Y. According to other embodiments, the seal 95 can form any other suitable cross-sectional shape to be engaged in an optimal way between the mouthpiece 43 and the heating chamber 60.
  • the seal 95 is formed from a flexible material such as resin, silicone, etc.
  • the seal 95 is advantageously arranged between a rib 96 extending from the internal surface of the support part 47 of the mouthpiece 43 and a protrusion 97 extending outwardly from the walls 63A, 63B, 64A, 64B and delimiting the chamber opening 69.
  • This protrusion 97 forms thus a flange at the open end of the heating chamber 60 and can include or pass through the protruding parts 80A, 80B explained above.
  • the flange forms for example a substantially flat surface substantially perpendicular to the device axis Y.
  • the rib 96 is advantageously directed according to the device axis Y and extends for example from the whole periphery of internal surface of the support part 47 of the mouthpiece.
  • the pressure exerting fixing means 51 exerts pressure to the seal 95 to fixe securely the heating chamber 60 inside the device body 40.

Landscapes

  • Manufacture Of Tobacco Products (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

L'invention concerne un dispositif de génération d'aérosol conçu pour fonctionner avec un article de génération d'aérosol. Le dispositif comprend : - un corps de dispositif (40) ; - une chambre de chauffage (60) ; - un embout buccal (43) monté sur le corps de dispositif (40) et comprenant : une partie de contact (46) comprenant une sortie d'aérosol (50) ; une barrière thermique (53) s'étendant entre un plan de délimitation proximal (54) et un plan de délimitation distal (55), le plan de délimitation proximal (54) étant plus proche de la sortie d'aérosol (50) que le plan de délimitation distal (55) ; l'embout buccal (43) comprenant en outre une section de réception (56) conçue pour recevoir une partie embout buccal (16) de l'article de génération d'aérosol (12) de sorte qu'une extrémité buccale (20) de l'article de tabac (12) soit positionnée plus loin de la sortie d'aérosol (50) que le plan de délimitation proximal (54) de la barrière thermique (53).
PCT/EP2024/058508 2023-03-30 2024-03-28 Dispositif de génération d'aérosol comprenant une barrière thermique et ensemble de génération d'aérosol associé Pending WO2024200669A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020257032066A KR20250159023A (ko) 2023-03-30 2024-03-28 열 차단부를 포함하는 에어로졸 생성 장치 및 연관된 에어로졸 생성 조립체
CN202480023216.1A CN120882323A (zh) 2023-03-30 2024-03-28 包括断热部的气溶胶产生装置以及相关联的气溶胶产生组件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23165334 2023-03-30
EP23165334.6 2023-03-30

Publications (1)

Publication Number Publication Date
WO2024200669A1 true WO2024200669A1 (fr) 2024-10-03

Family

ID=85792404

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/058508 Pending WO2024200669A1 (fr) 2023-03-30 2024-03-28 Dispositif de génération d'aérosol comprenant une barrière thermique et ensemble de génération d'aérosol associé

Country Status (3)

Country Link
KR (1) KR20250159023A (fr)
CN (1) CN120882323A (fr)
WO (1) WO2024200669A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3512365B1 (fr) * 2016-09-14 2020-09-02 British American Tobacco (Investments) Limited Section de récipient
US20210186118A1 (en) * 2019-12-19 2021-06-24 John Robert Mumford Aerosol-generating apparatus, thermal distribution casing, and related methods
US20210219615A1 (en) * 2018-06-20 2021-07-22 Jt International S.A. Aerosol Generating Device With Removable Chamber
EP3991586A1 (fr) * 2019-06-28 2022-05-04 Japan Tobacco Inc. Système d'inhalation d'arôme, embouchure et cartouche
US20220279843A1 (en) * 2019-09-06 2022-09-08 Philip Morris Products S.A. Aerosol-generating device with gap between article
US20220312838A1 (en) * 2019-07-10 2022-10-06 Nicoventures Trading Limited Vapor delivery systems

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3512365B1 (fr) * 2016-09-14 2020-09-02 British American Tobacco (Investments) Limited Section de récipient
US20210219615A1 (en) * 2018-06-20 2021-07-22 Jt International S.A. Aerosol Generating Device With Removable Chamber
EP3991586A1 (fr) * 2019-06-28 2022-05-04 Japan Tobacco Inc. Système d'inhalation d'arôme, embouchure et cartouche
US20220312838A1 (en) * 2019-07-10 2022-10-06 Nicoventures Trading Limited Vapor delivery systems
US20220279843A1 (en) * 2019-09-06 2022-09-08 Philip Morris Products S.A. Aerosol-generating device with gap between article
US20210186118A1 (en) * 2019-12-19 2021-06-24 John Robert Mumford Aerosol-generating apparatus, thermal distribution casing, and related methods

Also Published As

Publication number Publication date
CN120882323A (zh) 2025-10-31
KR20250159023A (ko) 2025-11-07

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