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EP4573940A1 - Cartouche de génération d'aérosol pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol associé - Google Patents

Cartouche de génération d'aérosol pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol associé Download PDF

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Publication number
EP4573940A1
EP4573940A1 EP23218523.1A EP23218523A EP4573940A1 EP 4573940 A1 EP4573940 A1 EP 4573940A1 EP 23218523 A EP23218523 A EP 23218523A EP 4573940 A1 EP4573940 A1 EP 4573940A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
aerosol generating
valve
cartridge body
vaporizable material
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
EP23218523.1A
Other languages
German (de)
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
Priority to EP23218523.1A priority Critical patent/EP4573940A1/fr
Priority to US18/968,351 priority patent/US20250204587A1/en
Publication of EP4573940A1 publication Critical patent/EP4573940A1/fr
Pending legal-status Critical Current

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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
    • A24F40/42—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
    • A24F40/485—Valves; Apertures
    • 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
    • A24F40/10—Devices using liquid inhalable precursors

Definitions

  • the present invention concerns an aerosol generating cartridge for an aerosol generating device.
  • the present invention also concerns an aerosol generating device and an aerosol generating system associated to such a cartridge.
  • the aerosol generating cartridge includes generally a wick that ensures liquid transmission from a reservoir to a heating element where it is vaporized and mixed with an airflow coming from the exterior of the cartridge.
  • a wick that ensures liquid transmission from a reservoir to a heating element where it is vaporized and mixed with an airflow coming from the exterior of the cartridge.
  • vaporization of the vaporizable material and/or its mixing with the airflow is not optimal. This can cause leakages, wick clogging, under-heating or over-heating of the vaporizable material, pressure drops, undesirable draw resistance, etc.
  • An aim of the present invention is to improve vaporization of the vaporizable material and/or its mixing with an airflow to avoid the above-mentioned issues.
  • a wick coupled with a heater to vaporize the vaporizable material.
  • deformation of the cartridge body allows dispensing of the vaporizable material directly to the heater, according to a desired quantity.
  • the deformation can be determined according to this quantity so as to dispense only the necessary quantity of the vaporizable material that the heater is able to evaporate.
  • it is possible to avoid under-heating or over-heating.
  • the invention solves the problem of wick clogging and can ensure a predetermined draw resistance throughout the whole cycle of use of the cartridge. Additionally, since the valve ensures the dispensing of the vaporizable material, it can be accurately and easily configured to dispense the vaporizable material only at the right moment in comparison with a wick. Thus, it is possible to minimize leakages from the cartridge, especially when it is not used to generate aerosol.
  • the over-molding process is particularly suitable for integrating the elastic elements inside the lips.
  • the valve can be produced easily and inexpensively.
  • each elastic element can resist a temperature comprised between 200°C and 400°C, advantageously between 250°C and 350°C. This temperature corresponds to the operational temperature of the heater. Thus, the elastic elements remain unaffected by increasing the temperature of the heater.
  • the support part can be provided with a skirt which is fixed to an internal wall delimiting the dispensing opening.
  • the fixation can be done mechanically and/or using a glue.
  • the skirt is provided with a rib extending for example circumferentially. This rib is designed to cooperate with a slot formed in the dispensing opening and fix thus the support part in a sealing way.
  • the movable part can protrude outwardly from the support part. Additionally, both parts can form one single piece made of a heat resistive material and having good sealing properties, like for example silicon.
  • the cartridge body can be easily deformed without be broken. Additionally, the cartridge body can be formed by one single piece, using for example a molding process. Thus, the cartridge body can be easily and inexpensively manufactured. This can considerably reduce the total cost of the cartridge.
  • the container containing the vaporizable material can be formed by the internal space delimited by the cartridge body.
  • the container can be deformable in a similar way that the cartridge body.
  • the cartridge body defines a lateral wall with a thickness comprised between 0,1 mm and 0,8 mm, advantageously between 0,2 mm and 0,6 mm.
  • the cartridge body defines a rigidity decreasing from a top wall to a bottom wall, the bottom wall comprising the dispensing opening and being opposite to the top wall.
  • a substantially homogenous deformation of the cartridge body can be achieved by substantially a same pressure effort.
  • the vaporizable material is a gel or a liquid with viscosity comprised between 5,000 cps and 50,000 cps.
  • the smoking gel could be achieved by increasing its viscosity and a propylene glycol to vegetable glycerin ratio (or "PG/VG ratio") or adding food-grade thickener to the liquid.
  • the food-grade thickener can be Xanthan gum.
  • the invention also concerns an aerosol generating device configured to operate with an aerosol generating cartridge as defined above and comprising a piston moveable along the cartridge axis and configured to exert pressure on the cartridge body to deform it.
  • the piston can exert pressure externally on the cartridge body, for example on an external surface of the top wall.
  • the piston can be configured to exert a homogenous pressure on the cartridge body during each vaping session.
  • the pressure can be exerted by alternating efforts spaced by a predetermined time interval.
  • the efforts can be determined dynamically for example by a control unit, based on parameters of the vaping session. These parameters can for example include time, puffing effort, number of puffs, temperature of the heater or of a neighboring of the heater, heater resistivity, etc.
  • This piston can be actuated using a drive unit.
  • the aerosol generating device comprises a cartridge housing configured to receive the cartridge and guide its deformation along the cartridge axis.
  • the wall delimiting the cartridge housing can be arranged with a predetermined distance from the lateral wall of the cartridge body.
  • the cartridge body can form a plurality of folds stacked according to the cartridge axis X.
  • the wall delimiting the cartridge housing fits the lateral wall of the cartridge body.
  • the cartridge body can be deformed by forming folds inwardly.
  • the cartridge housing can be provided with guiding means guiding the deformation of the cartridge body in a desired way.
  • the invention also concerns an aerosol generating system comprising an aerosol generating device as previously defined and an aerosol generating cartridge as previously defined and configured to operate with the aerosol generating device.
  • the invention also proposes an aerosol generating device extending along a device axis and configured to operate with an aerosol generating cartridge comprising a cartridge body comprising a dispensing opening and a valve mounted on the dispensing opening;
  • the vaporizable material dispensed from the valve is guided directly by the heater and can be efficiently evaporated.
  • the surface of the heater and the quantity of the dispensed vaporizable material can be accurately adjusted to avoid under-heating and over-heating.
  • the quantity of the dispensed vaporizable material is defined by the valve. This avoids the problems of wick clogging and undesirable leakage.
  • the vaporizable material is directly dispensed on the heater and guided by this heater, it is possible to predict the draw resistance and make it consistent throughout the whole vaping session and/or the whole cycle of use of the cartridge.
  • the protruding part of the heater has a shape configured to guide a vaporizable material dispensed through the valve, until the flat part.
  • the protruding part can be arranged close to the valve dispensing the vaporizable material.
  • the flow can be thus distributed homogenously on the whole surface of the heater and notably, on the flat part of the heater. This allows homogeneous heating of the vaporizable material and avoids its over-heating and under-heating.
  • the dimensions of the heater can be adapted to the quantity of the vaporizable material dispensed by the valve so as to avoid the over-heating and under-heating of the vaporizable material. This also reduces leakages during the operation of the device since the total quantity of the dispensed vaporizable material is vaporized by the heater.
  • the gap between the valve and the protruding part of the heater can be chosen based on properties of the vaporizable material such as for example its viscosity.
  • the protruding part of the heater has a triangular cross-section in at least one plane comprising the device axis.
  • the protruding part of the heater further defines a pair of inclined surfaces extending from the edge to the flat part.
  • the inclined surfaces can guide efficiently the dispensed vaporizable material from either side of the edge to the flat part of the heater.
  • the flat part comprises a border extending on its periphery and delimiting a receiving space for the vaporizable material. Additionally, the receiving space may be configured to receive a predetermined quantity of the vaporizable material.
  • the invention also concerns an aerosol generating system comprising an aerosol generating device as previously defined and an aerosol generating cartridge configured to operate with the aerosol generating device.
  • the aerosol generating cartridge comprises a valve comprising a movable part configured to be in an open configuration under pressure of the vaporizable material exerted and in a closed configuration otherwise.
  • the aerosol generating cartridge extends along a cartridge axis and comprising a cartridge body; the cartridge body being deformable under pressure exerted according to the cartridge axis to cause opening of the valve and dispensing of a vaporizable material through the valve.
  • the cartridge body can be deformable by a pressure exerted externally for example by a piston. This creates a pressure of the vaporizable material inside the cartridge which is exerted then on the valve. The valve is closed until this pressure achieves a certain threshold pressure and is open otherwise.
  • the valve comprises a pair of lips arranged to face each other and forming between them a slit in the closed configuration of the moveable part and a hole in the open configuration of the moveable part.
  • the hole formed by the valve in the open configuration can form an oval shape.
  • This oval shape can be adapted to a particular shape of the protruding part of the heater so as to guide efficiently the dispensed vaporizable material.
  • the protruding part may comprise an edge which is aligned with the slit and as a consequence with the oval shape of the hole.
  • 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 designed and configured to be hand held by a user, i.e. held and used within one hand of the 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 by a manual actuator located on an outer surface of the device (button or switch) and/or by means of an airflow or inhalation sensor arranged in the airflow path of the device.
  • the inhalation sensor may be sensitive to the velocity of an airflow passing across the sensor during an inhalation by a user 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 adjust the temperature of the heater and/or of the heated aerosol generating substance (aerosol precursor) 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.
  • the aerosol generating device 18 comprises for example at least one air inlet 28 for feeding an airflow to the heater 22 and an aerosol outlet 30 for delivering the airflow containing the aerosol generated at the heater 22 to the user.
  • the aerosol outlet 30 is for example provided in a mouthpiece 32.
  • the mouthpiece 32 is a part of the aerosol generating device 18. According to other examples, the mouthpiece 32 can be provided separately from the aerosol generating device 18 or together with the cartridge 12.
  • the aerosol generating device 18 is configured for the circulation of an airflow from the or each air inlet 28 to the aerosol outlet 30 with passing via the heater 22 for collecting the heated vaporizable material 16 in the airflow.
  • the lateral wall 38 presents one or two zigzag portions.
  • the cartridge body 34 can also present a fully-deformed state in which it cannot be further deformed by pressure exerting according to the cartridge axis X. In this state, advantageously, the internal volume of the container 36 is minimal and substantially the whole quantity of the vaporizable material 16 is expelled from the container 36.
  • the deformation of the cartridge body 34 from its non-deformed state is irreversible.
  • the cartridge body 34 can be made of or contain low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • the LDPE can be soft blow molded.
  • the lateral wall 38 defines a thickness suitable for deformation as explained above. This thickness may for example be comprised between 0,1 mm and 0,8 mm, advantageously between 0,2 mm and 0,6 mm.
  • the cartridge body 34 can present a rigidity decreasing according to the cartridge axis X from the top wall 44 to the bottom wall 42.
  • the thickness of the lateral wall 38 can for example be gradually decreasing according to the cartridge axis X from the top wall 44 to the bottom wall 42.
  • the lateral wall 38, the top wall 44 and preferably the bottom wall 42 are made of one single piece for example by molding. More advantageously, the cartridge body 34 is made of one single piece.
  • the container 36 can correspond to an internal part of the cartridge body 34 delimited by the walls 42, 44 and 38.
  • the valve 50 is shown in more detail in Figures 4 and 5 .
  • This valve 55 is advantageously operated by pressure (or "pressure-operated”).
  • the pressure-operated valve 50 is configured for staying closed when the pressure inside the container 36 is lower than a threshold pressure and for opening when the pressure inside the container 36 is higher than said threshold pressure.
  • this threshold pressure is achieved when the cartridge body 34 is being deformed by the pressure exerted according to the cartridge axis X.
  • the valve 50 is open when the cartridge body 34 is being deformed and closed otherwise.
  • the valve 50 comprises a movable part 61 and a support part 62.
  • the moveable part 61 is configured to be in an open configuration when the cartridge body 34 is being deformed and closed otherwise.
  • the support part 62 is arranged to seal the dispensing opening 45 of the bottom wall 42.
  • the support part 62 can have any appropriate shape adapted to seal the dispensing opening 45.
  • the support part 62 can have a circular shape fitting with a circular shape of the dispensing opening 45.
  • the support part 62 can define a skirt 63 configured to be inserted in the dispensing opening 45 and be in contact in a sealing way with walls delimiting the dispensing opening 45.
  • the skirt 63 can be glued and/or fixed using any appropriate mean.
  • the skirt 63 can define a rib 64 extending circumferentially around the cartridge axis X and adapted to be received into a corresponding slot formed on the walls delimiting the dispensing opening 45. The rib 64 can thus ensure a snap-fit feature or compression-fit feature to hold the valve 50 in the dispensing opening 45.
  • the moveable part 61 comprises a pair of lips 70A, 70B.
  • Each lip 70A, 70B is elastically deformable under pressure exerted from the container 36 between a rest position in which the moveable part 61 is in the closed configuration (shown in part A of Figure 5 ) and a deformed position in which the moveable part 61 is in the open configuration (shown in part B of Figure 5 ).
  • the lips 70A, 70B protrude from the support part 62 toward the exterior of the cartridge 12.
  • the lips 70A, 70B are arranged to face each other and form between them a slit 71 (shown in part A of Figure 5 ) in the closed configuration of the moveable part 61 and a hole 72 (shown in part B of Figure 5 ) in the open configuration of the moveable part 61.
  • a slit 71 shown in part A of Figure 5
  • a hole 72 shown in part B of Figure 5
  • the lips 70A, 70B are in contact one with the other and the slit 71 is formed by their external surfaces, without crossing the valve 50.
  • the hole 72 conducts the vaporizable material 16 out from the container 36 through the dispensing opening 45.
  • each lip 70A, 70B comprises an elastic element 74A, 74B elastically deformable under said pressure between a rest position in which the moveable part 61 is in the closed configuration and a deformed position in which the moveable part 61 is in the open configuration.
  • each elastic element 74A, 74B may comprise a bar.
  • Each bar is integrated into the corresponding lip 70A, 70B and may define any suitable cross-section, such for example a circular, rectangular or oval cross-section.
  • each bar in the rest position, each bar is flat and in the deformed position, each bar is at least slightly bended outwardly from the other bar.
  • the centers of the lips 70A, 70B are separated whereas their ends remain adjacent one to the other. In the rest position of the bars, the centers of the lips 70A, 70B are in contact one with the other.
  • Each bar is made from a material presenting good elastic properties but still rigid enough to return to a straight position after each opening.
  • This material also presents heat resistive properties.
  • the material resists the temperature that can achieve a value comprised between 200°C and 400°C, advantageously between 250°C and 350°C.
  • Such a material can for example be metal, plastic or graphene.
  • a plastic bar can be manufactured from polycarbonate or 100% virgin MMA (Methyl Methacrylate) for heat resistance. Among metals, stainless steel or nickel-titanium (Ni-Ti) can be considered.
  • a graphene bar may be low cost and presents high-temperature resistance properties.
  • the piston 80 is movable or operable by an actuator 82.
  • the actuator 82 comprises for example an axially movable pushing member 84 configured for pushing the piston 80 axially along the cartridge axis X and a drive unit 86 configured for driving the pushing member 84 axially.
  • the actuator 82 is preferably powered by the battery 24 and controlled by the controller 26.
  • the controller 26 can control the drive unit 86 so as to drive the pushing member 84 during a vaping session.
  • the drive unit 86 can for example drive the pushing member 84 so as to move it along the cartridge axis X. This movement can be homogenous or be defined based on various parameters of the vaping session. These parameters can for example include time, puffing effort, number of puffs, temperature of the heater or of a neighboring of the heater, heater resistivity, etc.
  • the heater 22 comprises a flat part 92 and a protruding part 93 arranged in a center of the flat part 92 and protruding from this flat part 92 to face the valve 50 when the cartridge 12 is received at least partially in the heating cavity 90.
  • the flat part 92 extends for example around the protruding part 93 substantially perpendicularly to the device axis Y.
  • the flat part 92 can have a circular shape.
  • the protruding part 93 forms a substantially constant axial gap d with the cartridge 12 and notably with the valve 50, when the cartridge 12 is received at least partially in the heating cavity 90.
  • the edge 94 is aligned with the slit 70 formed by the valve 50.
  • the edge 94 can face the slit 70 and be parallel to this slit 70.
  • the edge 94 extends according to substantially the same length as the slit 70.
  • the edge 94 faces the hole 72 so as the vaporizable material 16 can be dispensed directly on the edge 94.
  • the edge 94 separates then the flow of the vaporizable material 16 between the inclined surfaces 95A, 95B that guide these flows until the flat part 92.
  • the drive unit 86 of the piston 80 is configured to drive the pushing element 84 based on said predetermined quantity of the vaporizable material 16 that the receiving space 97 is able to receive.
  • the drive unit 86 of the piston 80 is also configured to drive the pushing element 84 based on the capacity of the heater 22 to vaporize this quantity of the vaporizable material.
  • the flat and protruding parts 92, 93 form one single piece made of a heat resistant and heat conductive material, like a metal. These parts 92, 93 can be in contact with one or several heating elements resistively generating heat. Preferably, the or each heating element is arranged on the side of the flat and protruding parts 92, 93 opposite to the side in contact with the vaporizable material 16.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP23218523.1A 2023-12-20 2023-12-20 Cartouche de génération d'aérosol pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol associé Pending EP4573940A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23218523.1A EP4573940A1 (fr) 2023-12-20 2023-12-20 Cartouche de génération d'aérosol pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol associé
US18/968,351 US20250204587A1 (en) 2023-12-20 2024-12-04 Aerosol Generating Cartridge for an Aerosol Generating Device, and Associated Aerosol Generating Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23218523.1A EP4573940A1 (fr) 2023-12-20 2023-12-20 Cartouche de génération d'aérosol pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol associé

Publications (1)

Publication Number Publication Date
EP4573940A1 true EP4573940A1 (fr) 2025-06-25

Family

ID=89224228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23218523.1A Pending EP4573940A1 (fr) 2023-12-20 2023-12-20 Cartouche de génération d'aérosol pour un dispositif de génération d'aérosol et dispositif de génération d'aérosol associé

Country Status (2)

Country Link
US (1) US20250204587A1 (fr)
EP (1) EP4573940A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1618803A1 (fr) * 2003-04-29 2006-01-25 Lik Hon Cigarette sans fumee a pulverisation electronique
US20180154092A1 (en) * 2015-06-12 2018-06-07 Philip Morris Products S.A. Dispensing mechanism
US20210212370A1 (en) * 2018-05-23 2021-07-15 Nicoventures Trading Limited Electronic vapor provision system with aerosolizable substrate material dispensing arrangement
WO2022200487A1 (fr) * 2021-03-25 2022-09-29 Jt International Sa Dispositif de génération d'aérosol avec un réservoir de liquide à vapoter au moins en partie non rigide
WO2023161099A1 (fr) * 2022-02-23 2023-08-31 Jt International Sa Dispositif de génération de vapeur à régulation d'écoulement de liquide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1618803A1 (fr) * 2003-04-29 2006-01-25 Lik Hon Cigarette sans fumee a pulverisation electronique
US20180154092A1 (en) * 2015-06-12 2018-06-07 Philip Morris Products S.A. Dispensing mechanism
US20210212370A1 (en) * 2018-05-23 2021-07-15 Nicoventures Trading Limited Electronic vapor provision system with aerosolizable substrate material dispensing arrangement
WO2022200487A1 (fr) * 2021-03-25 2022-09-29 Jt International Sa Dispositif de génération d'aérosol avec un réservoir de liquide à vapoter au moins en partie non rigide
WO2023161099A1 (fr) * 2022-02-23 2023-08-31 Jt International Sa Dispositif de génération de vapeur à régulation d'écoulement de liquide

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