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WO2025109105A1 - Ensemble de chauffage pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol correspondant - Google Patents

Ensemble de chauffage pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol correspondant Download PDF

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Publication number
WO2025109105A1
WO2025109105A1 PCT/EP2024/083173 EP2024083173W WO2025109105A1 WO 2025109105 A1 WO2025109105 A1 WO 2025109105A1 EP 2024083173 W EP2024083173 W EP 2024083173W WO 2025109105 A1 WO2025109105 A1 WO 2025109105A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
heating element
consumable article
support
aerosol
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/EP2024/083173
Other languages
English (en)
Inventor
Juraj LEHOCKY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JT International SA
Original Assignee
JT International SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JT International SA filed Critical JT International SA
Publication of WO2025109105A1 publication Critical patent/WO2025109105A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/70—Manufacture
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present invention relates to the field of aerosol generating devices configured to operate a consumable article, and in particular to a heating assembly configured for heating a consumable article inserted in the aerosol generating device.
  • the consumable article contains a vaporizable material such as to form aerosol when the consumable article is heated by the aerosol generating device.
  • aerosol generating devices of this type also known as “heat-not-burn devices”, are adapted to heat, rather than burn 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 materials 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 so called “heat-not-burn device”.
  • Aerosol generation devices of this type generate aerosol or vapour by heating an aerosol substrate that is usually comprised in a consumable article separate from the aerosol generation devices.
  • aerosol substrate comprises moist leaf tobacco or other suitable vaporizable material that vaporizes at a temperature typically in the range of 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 by-products of combustion and burning.
  • the one or several heating elements are mounted onto a support of the heating assembly, said support advantageously delimiting the heating chamber for receiving the consumable article.
  • Each heating element is for example an electrical heating element configured to generate heat when fed with electricity, in particular by Joule effect.
  • the heating assembly shall also be economical to produce.
  • One of the aims of the invention is to propose a heating assembly for an aerosol generating device which can ensure appropriate heating of the consumable article, with being safe to use and economical to produce.
  • the invention proposes a heating assembly for an aerosol generating device, the heating assembly comprising:
  • a heating chamber for receiving a consumable article upon insertion of the consumable article in the aerosol generating device, the consumable article containing an aerosol generating material for generating an aerosol when heated,
  • each heating element being configured for heating a consumable article received in the heating chamber
  • each heating element is overmolded by the support.
  • Each heating element overmolded by the support allows manufacturing the heating assembly economically, along with permitting an appropriate and safe use of the aerosol generating device by the user.
  • Each heating element overmolded by the support can be fixed appropriately and reliably to the support while being accurately positioned in close proximity or in contact with the consumable article inserted in the heating chamber of the heating assembly for an appropriate heating of the consumable article, with limiting any risk for the user.
  • each heating element is flat shaped.
  • a flat shaped heating element can provide a large area for heat transfer with the consumable article, thus ensuring an appropriate and homogenous heating of the consumable article.
  • a flat shaped heating element can be overmoulded by the material of the support with a good cohesion between the flat shaped heating element and the support.
  • each heating element has a heating surface parallel to an internal surface of the chamber.
  • the heating surface is configured for transferring heat, in particular to the consumable article received in the heating chamber.
  • the heating surface is orientated towards the inside of the heating chamber.
  • the heating surface parallel to the internal surface of the chamber allows efficient heating of the consumable article received in the heating chamber over a large area.
  • each heating element has a heating surface which is flush with an internal surface of the chamber.
  • the heating surface flush with an internal surface of the chamber can be close or in contact with a surface of the consumable article inserted in the heating chamber, thus promoting the transfer of heat from the heating surface to the consumable article.
  • each heating element has a heating surface which is flat.
  • a flat heating surface provides a large area for heat transfer with a surface of the consumable article inserted in the heating chamber, in particular with a flat surface of the consumable article, in particular if the consumable article in flat shaped with a parallelepiped shape.
  • the consumable article can be heated in a particularly fast and efficient way.
  • the heating assembly comprises, for each heating element, a set of connection wires for connecting the heating element to an electric source.
  • Each set of connection wires comprises for example two wires.
  • connection of the heating element to an electric source allows passing an electric current via the heating element for generating heat in the heating element by Joule effect.
  • connection wires of each set of connection wires extend through the support, in particular through an opening provided in the support.
  • connection wire through the support, in particular through an opening of the support, allows manufacturing the heating assembly with ease, e.g. with overmolding the support on the heating element provided with the connections wires connected to the heated element.
  • each wire connection is connected to the corresponding heating element on a rear surface of the heating element facing opposite the heating chamber.
  • the rear surface is opposite a heating surface of the heating element facing towards the inside of the heating chamber.
  • the heating assembly comprises two heating elements facing each other, the two heating elements being located on opposed internal surfaces of the heating chamber.
  • the support comprises two opposed walls, the heating chamber being delimited between the two opposed walls, each wall defining a respective internal surface of the heating chamber.
  • the heating assembly comprises one single heating element overmolded in one to the two opposed walls or two heating elements, one respective heating element being overmolded in each one of the two opposed walls of the support.
  • the support can thus delimit the heating chamber for receiving the consumable article and support each heating element overmolded by the support.
  • the manufacture of the heating assembly can thus be easy and economical.
  • the support is made of a plastic material, in particular of a thermostable thermoplastic.
  • the support made of a plastic material can be molded, e.g. injection molded or compression molded, in particular with overmolding each heating element.
  • the plastic material is a polyaryl ether ketone (PAEK), in particular a polyether ether ketone (PEEK).
  • PAEK polyaryl ether ketone
  • PEEK polyether ether ketone
  • Such material is adapted for molded and can withstand, without damages, high temperatures, in particular high continuous temperatures, as can be encountered in a heating assembly of an aerosol generating device.
  • the plastic material is reinforced with fibers.
  • the fibers comprise for example carbon fibers and/or nylon fibers.
  • the reinforcement fibers allow strengthening the support with still allowing molding of the support with overmolding the heating element, in particular when the fibres have a short length.
  • the support is for example injection molded or compression molded, and preferably injection molded.
  • the invention also relates to an aerosol generating device configured for operating a consumable article comprising an aerosol generating material configured for generating an aerosol when heated, the aerosol generating device comprising a heating assembly as defined above, configured for heating the consumable article received in the heating chamber such as to generate an aerosol.
  • the invention also relates to an aerosol generating system comprising an aerosol generating device as defined above and a consumable article comprising an aerosol generating material configured for generating an aerosol when heated, the consumable article being receivable in the heating chamber of the heating assembly, the heating assembly being configured for heating the consumable article received in the heating chamber such as to generate an aerosol.
  • the invention also relates to a method of manufacturing a heating assembly for an aerosol generating device, the heating assembly comprising a heating chamber for receiving a consumable article containing an aerosol generating material configured for generating an aerosol when heated and at least one heating element, each heating element being configured for heating a consumable article received in the heating chamber, the manufacturing method comprising the step of molding a support such that each heating element is supported by the support and overmolded by the support.
  • FIG. 1 is a schematic sectional view of an aerosol generating assembly comprising an aerosol generating device and a consumable article;
  • FIG. 1 is a perspective view of the consumable article of Figure 1 ;
  • FIG. 3 is a longitudinal sectional view of the consumable article of Figure 2;
  • - Figure 4 is a longitudinal sectional view of a heating assembly of the aerosol generating device
  • - Figure 5 is a longitudinal sectional view of a mold for molding a support of the heating assembly, the mold being in an open configuration
  • FIG. 6 is a longitudinal sectional view of a mold for molding a support of the heating assembly, the mold being in a closed configuration.
  • 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 heating assembly 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.
  • the device may include a temperature regulation control to drive the temperature of the heating assembly and/or the vaporizable material (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 liquid droplets and/or 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.
  • an aerosol generating assembly 10 comprises an aerosol generating device 12 and a consumable set 14.
  • the consumable set 14 comprises a consumable article 16 and a mouthpiece 18.
  • the mouthpiece 18 may be exchangeable or be a re-usable part removably attached to the aerosol generating device 12.
  • the consumable article 16 is configured to operate with the aerosol generating device 12.
  • the device body 20 delimits an internal space of the aerosol generating device 12 receiving various elements designed to carry out different functionalities of the aerosol generating device 12.
  • the device body 20 houses for example a battery 26 for powering the aerosol generating device 12, an electronic control module 28 for controlling the operation of the aerosol generating device 11 , and a heating assembly 30 for heating the consumable article 16.
  • the heating assembly 30 is part of the aerosol generating device 12 and is configured to heat the consumable article 16 inserted in the aerosol generating device 12.
  • the heating assembly 30 is fixedly mounted in the aerosol generating device 12 for heating a consumable article 16 removably inserted in the aerosol generating device 12.
  • the heating assembly 30 is separate from the consumable article 16.
  • the heating assembly 30 comprises a heating chamber 32.
  • the heating chamber 32 is designed to receive at least partially the consumable article 16. As illustrated on Figure 1 , the heating chamber 32 opens for example at the first end 22 of the device body 20 via an insertion opening 34 for insertion of the consumable article 16 into the heating chamber 32.
  • the mouthpiece 18 may for instance be slidably connected or pivotally attached to the device body 20 to allow the heating assembly 30 to be opened for insertion of the consumable article.
  • the heating chamber 32 extends for example along a longitudinal axis A which is parallel or coincides for example with the device axis Y.
  • the heating assembly 30 is configured to receive and heat at least a portion of the consumable article 16 inserted in the heating chamber 32.
  • the heating assembly 30 comprises at least one heating element 36 configured for heating the consumable article 16 received in the heating chamber 32.
  • Each heating element 36 is fixedly mounted relative to the heating chamber 32.
  • the consumable article 16 extends along an article axis X and comprises a tubular wrapper 40 extending along the article axis X between an inlet end 42 and an outlet end 44 of the consumable article 16, with forming a substrate portion 46, which receives an aerosol substrate 48, and, optionally, a cooling portion 50.
  • the wrapper 40 defines the external envelope of the consumable article 16.
  • the aerosol substrate 48 contains the vaporizable material.
  • the vaporizable material is configured for vaporizing when the substrate portion 46 is heated, e.g. by the heating assembly 30 of the aerosol generating device 12 in which the consumable article 16 is received.
  • the aerosol substrate 48 is configured for allowing air to flow through the aerosol substrate 48.
  • the cooling portion 50 is configured for the circulation of the aerosol from the substrate portion 46 to the outlet end 44 with cooling of the aerosol.
  • the cooling of the aerosol in the cooling portion 50 avoids the unpleasant sensation of hotness in the mouth or throat of the user.
  • the substrate portion 46 and the cooling portion 50 are respective axial sections or axial length portions of the wrapper 40.
  • the substrate portion 46 extends from the inlet end 42 to the cooling portion 50 and the cooling portion 50 extends from the substrate portion 46 to the outlet end 44 of the consumable article 16.
  • the cooling portion 50 can form a mouthpiece. In this case, a separate mouthpiece as explained above may not be necessary.
  • the cooling portion 50 may also comprise a filtering element.
  • the consumable article 16 exhibits for example a flat shaped.
  • the consumable article 16 extends between two parallel first planes and two parallel second planes perpendicular to the first planes, the first planes and the second planes being parallel to the article axis, the distance between the second planes being at least 3 times, advantageously 5 times and preferably 10 times, greater than the distance between the first planes.
  • the consumable article can be ready to generate aerosol only a few seconds (for example 5 s or 15 s or 20 s) after activating the heating.
  • the consumable article 16 is for example in the shape of parallelepiped, in particular a rectangular parallelepiped.
  • the consumable article 16 has a cross-section taken perpendicularly to the article axis X, i.e. in a plane perpendicular to the article axis X.
  • the cross-section of the consumable article 16 is preferably constant along the article axis X.
  • the consumable article 16 exhibits for example a quadrangular cross-section, i.e. a cross section with four sides.
  • the consumable article 16 exhibits for example a trapezoidal cross-section or preferably a rectangular cross-section.
  • the wrapper 40 comprises for example two wide peripheral walls 52, which are opposed and parallel to each other, and two opposed narrow peripheral walls 54. This allows imparting a plate shape to the consumable article 16.
  • each peripheral wall (wide peripheral walls 52 or narrow peripheral walls 54) is the distance between the two edges of the peripheral wall which are parallel to article axis X.
  • the width of each wide peripheral walls 52 is strictly higher than the width of each narrow peripheral wall 54.
  • the two wide peripheral walls 52 are spaced apart along a first transverse direction T 1 perpendicular to the article axis X.
  • the two narrow peripheral walls 54 are spaced apart along a second transverse direction T2 perpendicular to the article axis X and to the first transverse direction T 1 .
  • the two wide peripheral walls 52 are preferably flat.
  • the two narrow peripheral walls 54 are for example flat.
  • the two narrow peripheral walls 54 are parallel to each other as illustrated on Figure 2. This imparts a rectangular parallepiped shape to the consumable article 16.
  • the two narrow peripheral walls 54 are for example inclined one relative to the other with a non-zero angle. This imparts a trapezoidal crosssection to the cooling section 50.
  • the consumable article 16 has external dimensions including a length L taken along the article axis X between the inlet end 42 and the outlet end 44, a width W taken perpendicularly to the article axis X between the narrow peripheral walls 54, and a depth D taken perpendicularly to the article axis X between the wide peripheral walls 52.
  • the width W of the consumable article 16 is taken along the second transverse direction T2 and the depth D of the consumable article 16 is taken along the first transverse direction T 1 .
  • the length L of the consumable article 16 is comprised between 20 mm and 45 mm
  • the width W of the consumable article 16 is comprised between 7 mm and 17 mm
  • the depth D of the consumable article 16 is comprised between 0.7 mm and 2.0 mm.
  • the length L of the consumable article 16 substantially equals to 33 mm
  • the width W substantially equals to 12.4 mm
  • the depth D of the consumable article 16 substantially equals to 1.65 mm.
  • the width W of the consumable article 16 is for example at least three times the depth D of the consumable article 16, preferably at least five times the depth D of the consumable article 16, still preferably at least ten times the depth D of the consumable article 16.
  • the width to depth ratio (W/D) of the consumable article 16 is for example equal or higher than three, in particular equal or higher than five, still in particular equal or higher than ten.
  • the cooling section 50 is for example void or provided with at least one reinforcement element received in the cooling section 50 for reinforcing the cooling section 50, in particular for preventing the peripheral walls of the wrapper 40 (wide peripheral walls 50 and narrow peripheral walls 52) to collapse inwardly.
  • the thickness of the peripheral walls of the wrapper 40 may be preferably between 75 microns and 140 microns.
  • the paper has a thickness of 125 microns.
  • the wrapper may for instance be formed from a paper sheet having a basis weight of at least 70 g/m2, more preferably at least 75 g/m2, most preferably at least 78 g/m2.
  • the paper has a basis weight of about 100 g/m2.
  • the porosity of the paper may be less than 100 CU, preferably between 0 and 80 CU. In one example, the paper has a porosity of 40 CU.
  • the wrapper 40 comprises for example paper and/or non-woven fabric and/or aluminium foil.
  • the wrapper 40 is preferably non-porous but in possible embodiments, the wrapper may be locally porous or perforated (e.g., by row(s) of through-holes) to allow air to enter in the cooling part.
  • the wrapper 40 preferably comprises paper.
  • the paper can be similar to one used as a tipping paper in the conventional tobacco articles. In a variant, the paper is different from one of the conventional tobacco articles.
  • the wrapper 40 comprises for example aluminium.
  • the aluminium extends in the substrate portion 46 to prevent condensation leakage and/or vapour leakage.
  • the aluminium extends for example only in the substrate portion 46 or extends in the substrate portion 46 and the cooling portion 50.
  • the wrapper 40 is a laminate of paper and aluminium which extends along the entire length of the consumable article 16, from the inlet end 42 to the outlet end 44.
  • the heating assembly 30 comprises the heating chamber 32 which is configured for receiving the consumable article 16, preferably with the article axis X substantially coinciding with the longitudinal axis A.
  • the heating chamber 32 comprises for example two opposite internal surfaces 32A facing each other. The heating chamber 32 is delimited between the two internal surfaces 32 A.
  • the heating assembly 30 comprises at least one heating element 36, each heating element 36 being configured for heating the consumable article 16 received in the heating chamber 32.
  • the heating assembly 30 comprises for example two heating elements 36 provided on the two opposed internal surfaces 32A of the heating chamber 32, the two heating elements 36 facing each other.
  • the consumable article 16 inserted in the heating chamber 32 is received between the two heating elements 36.
  • the two heating elements 36 heat the consumable article 16 on two opposed sides.
  • the heating assembly 30 comprises only one heating element 36 provided on one of the two opposed internal surfaces 32A of the heating chamber 32.
  • the other one of the two opposed internal surfaces 32A of the heating chamber 32 is deprived of heating element 36.
  • Each heating elements 36 has a heating surface 36A facing the inside of the heating chamber 32.
  • the heating surface 36A is configured for transferring heat to the consumable article 16 received in the heating chamber 32 during heating operation.
  • each heating element 36 is for example flat.
  • the heating surface 36A of each heating element 36 has for example a polygonal contour, in particular a rectangular contour.
  • each heating element 36 has a triangular contour or a polygonal contour with more than four sides.
  • each heating element 36 has a circular contour.
  • Each heating element 36 has for example two opposed and preferably parallel surfaces, one defining the heating surface 36A and the other a rear surface 36B.
  • the rear surface 36B of each heating element 36 faces opposite the heating chamber 32.
  • Each heating element 36 is for example in the shape of a plate, in particular a flat plate.
  • Each heating element 36 in the shape of plate has two opposed surfaces forming the heating surface 36A and the rear surface 36B of the heating element 36.
  • Each heating element in a shape of a plate can be manufactured easily and cost effectively.
  • Each heating element 36 has for example a polygonal contour, in particular a rectangular contour. Alternatively, each heating element 36 has a triangular contour or a polygonal contour with more than four sides. Still alternatively, each heating element 36 has a circular contour.
  • each heating element 36 is for example parallel to the internal surface 32A of the heating chamber 32 on which the heating element 36 is provided, and preferably flush with the internal surface 32A of the heating chamber 32 on which the heating element 36 is provided.
  • the heating surface 36A is configured to be close to and preferably to contact a surface of the consumable article 16 when the latter is inserted in the heating chamber 32.
  • Each heating element 36 is made of an electrically conductive material, in particular of metal. Such heating element 36 is adapted for generating heat by Joule effect by passing an electrical current through the heating element 36.
  • the heating assembly 30 comprises for example, for each heating element 36, a pair of connection wires 38 for electrically connecting the heating element 36 to an electric source, in particular the battery 26 of the aerosol generating device 12.
  • the two connection wires 58 allow passing an electrical current via the heating element.
  • Each heating element 36 is mounted fixedly relative to the heating chamber 32.
  • the heating assembly 30 comprises a support 60 supporting each heating element 36, each heating element 36 being overmolded by the support 60.
  • the support 60 delimits the heating chamber 32.
  • the support 60 extends along the longitudinal axis A and comprises for example a heating section 62 in which the heating chamber 32 is delimited, and, optionally, an inlet section 64 for guiding the consumable article 16 into the heating chamber 32.
  • the heating section 62 is for example tubular along the longitudinal axis A.
  • the heating section 62 has for example a four-sided cross-section and comprises two opposed main walls 65 and two opposed side walls 66 connecting the main walls 65.
  • the two main walls 65 define two opposed internal surfaces 32A of the chamber 32.
  • Each heating element 36 is provided on one of the two main walls 65.
  • Each main wall 65 supporting a heating element 36 may also be referred to as a heating wall 65.
  • Each heating element 36 is preferably overmolded in one of the two opposed main walls 65.
  • the heating assembly comprises only one heating element 36 overmolded in one of the two main walls 65 of the support 60 or two heating elements 36, each heating element 36 being overmolded in a respective one of the two main walls 65 of the support 60.
  • the heating section 62 has for example a rectangular cross-section.
  • Each main wall 65 is for example wide, each side wall 66 being narrow.
  • connection wires 38 of each set of connection wires extend through the support 60, in particular through an opening 68 provided in the support 60.
  • Each opening 68 extends advantageously through the main wall 65 supporting the heating element 34 to which the connection wires 38 are connected.
  • connection wire 38 comprises for example a proximal section 38A connected to the heating element 36 and a distal section 38B extending the proximal section 38A opposite the heating element 36 for connection to the electric source.
  • the proximal section 38A extends between the distal section 38B and the heating element 36.
  • the proximal section 38A connects preferably to the rear surface 36B of the heating element 36 with extending through the opening 68 of the support 60.
  • the proximal section 38A and the distal section 38B define a non-zero angle between them.
  • the proximal section 38A and the distal section 38B are for example perpendicular one with respect to the other.
  • the proximal section 38A is for example perpendicular to the rear surface 36B of the heating element 36.
  • the proximal section 38A is in particular perpendicular to the heating element 36 when the heating element is flat shaped.
  • the distal section 38B is for example parallel to the heating element 36.
  • connection wire 38 is for example bent between the proximal section 38A and the distal section 38B, in particular at 90°.
  • the support 60 is made a plastic material, in particular of a thermostable thermoplastic.
  • the plastic material is for example a polyaryl ether ketone (PAEK), in particular a polyether ether ketone (PEEK).
  • PAEK and PEEK are thermostable thermoplastics which are stable at high temperature.
  • the plastic material is for example continuously operable to a temperature up to 200°C, preferably up to 250°C.
  • the thermoplastic is preferably operable to a temperature up to 300°C or 350°C, e.g. for short periods of time.
  • the plastic material is reinforced with fibers.
  • the fibers comprise for example carbon fibers and/or nylon fibers.
  • the support 60 is molded with overmoulding each heating element 36.
  • the support 60 is for example injection molded or compression molded.
  • the support 60 is preferably injection molded.
  • a mold 70 comprises mold parts 72, 74 movable with respect to each other between an open configuration ( Figure 5) in which the mold parts 72, 74 are moved away to each other and a closed configuration ( Figure 6) in which the mold parts 72, 74 are moved closer to each other to define a mold cavity 78.
  • the mold parts 72, 74 comprise for example two outer mold parts 72 and an inner mold part 74 which is inserted between the two outer mold parts 72 in the closed configuration for defining the heating chamber 32 within the support 60.
  • the inner mold part 74 is provided with one respective receiving surface 74A associated to each heating element 36 and configured for receiving said heating element 36 in the closed configuration of the mold 70, such that the support 60 is overmolded onto each heating element 36 which is then positioned on an inner surface 32A of the heating chamber 32.
  • the two outer mold parts 72 are provided with mold openings 72A allowing the connections wires 38 connected each heating element 36 to extend from the heating element 36 located inside the mold 70 to the outside of the mold 70.
  • the mold 70 optionally comprises plugs 76, each plug 76 being configured to sealing a mold opening 72A with a pair of connection wires 38 connected to a heating plate 36 extending through said plug 76.
  • Each plug 76 is for example configured for each connection wire 38 to extend in a rectilinear manner through the plug 76, with the proximal portion 38A and the distal portion 38B aligned.
  • Each connection wire 38 is for example subsequently bent between the proximal portion 38A and the distal portion 38B.
  • the manufacturing method comprises for example a first step of providing each heating element 36, preferably with the corresponding connection wires 38 attached to the rear face 36B the heating element 36, the connection wires 38 being in a rectilinear configuration.
  • Each connection wire 38 is for example welded to the rear face 36B of the corresponding heating element 36.
  • the manufacturing method comprises a second step of providing a plug on the connection wires 38 of each heating element 36 and closing the mold 70 ( Figure 6), such that each heating element 36 is received on the corresponding receiving surface 74A of the inner mold part 74, the mold parts 72, 74 being in the closed configuration with each connection wire 38 extending throught a plug 76 sealing a mold opening 72A.
  • the manufacturing method then comprises molding the support 60 in the mold cavity defined in the mold 70 with overmolding each heating element 76.
  • the molding material of the support 60 is for example injected in the mold 70 via one or several feed.
  • One or several feeds may be provided with being located on one or several of the mold parts for an appropriate feed of the mold material.
  • One feed 72B formed in an outer mold part 72 is illustrated on Figures 5 and 6.
  • the material of the support is inserted in mold 70 in the open configuration and then closing the mold 70 whereby the material of the support 60 is shaped into the support 60 by being compressed between the mold parts 72, 74.
  • the manufacturing method then comprises opening the mold 70, with removing the plugs 76 from the connection wires 38 when such plugs 76 are provided, and, if necessary, bending each connection wire 38 between the proximal portion 38A and the distal portion 38B.
  • a heating assembly 30 of an aerosol generating device 12 which can be manufactured easily with defining a heating chamber 32 and with a reliable mounting of each heating element 36 with an accurate positioning of each heating element 36 for efficient heating of a consumable article 16 inserted in the heating chamber 32.

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  • Resistance Heating (AREA)

Abstract

L'ensemble de chauffage est prévu pour un dispositif de génération d'aérosol conçu pour faire fonctionner un article consommable (16) contenant un matériau de génération d'aérosol destiné à générer un aérosol lorsqu'il est chauffé. L'ensemble de chauffage comprend une chambre de chauffage (32) destinée à recevoir un article consommable (16), au moins un élément chauffant (36) conçu pour chauffer un article consommable reçu dans la chambre de chauffage (30) et un support (62) supportant chaque élément chauffant (36), chaque élément chauffant (36) étant surmoulé par le support (60).
PCT/EP2024/083173 2023-11-24 2024-11-21 Ensemble de chauffage pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol correspondant Pending WO2025109105A1 (fr)

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EP23211985 2023-11-24
EP23211985.9 2023-11-24

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WO2025109105A1 true WO2025109105A1 (fr) 2025-05-30

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2756860B1 (fr) * 2011-08-16 2016-09-21 PAX Labs, Inc. Dispositif de vaporisation électronique basse température et procédés associés
US20180049471A1 (en) * 2015-02-05 2018-02-22 Philip Morris Products S.A. Aerosol generating device with anchored heater
US20180235278A1 (en) * 2015-03-31 2018-08-23 Philip Morris Products S.A. Extended heater and heating assembly for an aerosol generating system
US20200085106A1 (en) * 2016-07-25 2020-03-19 Altria Client Services Llc Fluid permeable heater assembly with cap
EP3632238A1 (fr) * 2017-05-26 2020-04-08 KT&G Corporation Ensemble de chauffage et dispositif de génération d'aérosol le comprenant
WO2022079279A1 (fr) * 2020-10-16 2022-04-21 Nicoventures Trading Limited Dispositif de fourniture d'aérosol
WO2022184926A1 (fr) * 2021-03-05 2022-09-09 Jt International Sa Dispositif de chauffage pour consommable comprenant un substrat de génération d'aérosol solide
US20230240368A1 (en) * 2022-01-30 2023-08-03 Smiss Technology Co., Ltd. Heating assembly, atomizer, manufacturing method of heating assembly, and assembly method of atomizer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2756860B1 (fr) * 2011-08-16 2016-09-21 PAX Labs, Inc. Dispositif de vaporisation électronique basse température et procédés associés
US20180049471A1 (en) * 2015-02-05 2018-02-22 Philip Morris Products S.A. Aerosol generating device with anchored heater
US20180235278A1 (en) * 2015-03-31 2018-08-23 Philip Morris Products S.A. Extended heater and heating assembly for an aerosol generating system
US20200085106A1 (en) * 2016-07-25 2020-03-19 Altria Client Services Llc Fluid permeable heater assembly with cap
EP3632238A1 (fr) * 2017-05-26 2020-04-08 KT&G Corporation Ensemble de chauffage et dispositif de génération d'aérosol le comprenant
WO2022079279A1 (fr) * 2020-10-16 2022-04-21 Nicoventures Trading Limited Dispositif de fourniture d'aérosol
WO2022184926A1 (fr) * 2021-03-05 2022-09-09 Jt International Sa Dispositif de chauffage pour consommable comprenant un substrat de génération d'aérosol solide
US20230240368A1 (en) * 2022-01-30 2023-08-03 Smiss Technology Co., Ltd. Heating assembly, atomizer, manufacturing method of heating assembly, and assembly method of atomizer

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