WO2020193223A1 - Système de chauffage sans combustion - Google Patents

Système de chauffage sans combustion Download PDF

Info

Publication number
WO2020193223A1
WO2020193223A1 PCT/EP2020/056849 EP2020056849W WO2020193223A1 WO 2020193223 A1 WO2020193223 A1 WO 2020193223A1 EP 2020056849 W EP2020056849 W EP 2020056849W WO 2020193223 A1 WO2020193223 A1 WO 2020193223A1
Authority
WO
WIPO (PCT)
Prior art keywords
heater
heat
aerosol
burn system
heater apparatus
Prior art date
Application number
PCT/EP2020/056849
Other languages
English (en)
Inventor
Kate FERRIE
Ross Shenton
Samantha MURRAY
Chris Lord
Med BENYEZZAR
Original Assignee
Nerudia Limited
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 Nerudia Limited filed Critical Nerudia Limited
Priority to EP20715738.9A priority Critical patent/EP3941237A1/fr
Publication of WO2020193223A1 publication Critical patent/WO2020193223A1/fr
Priority to US17/479,939 priority patent/US20220095692A1/en

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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
    • A24F40/50—Control or monitoring
    • 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 a heat not burn system and particularly, although not exclusively, to a heat not burn system comprising a device and an aerosol-forming article.
  • Conventional combustible smoking articles such as cigarettes, typically comprise a cylindrical rod of tobacco comprising shreds of tobacco which is surrounded by a wrapper, and usually also a cylindrical filter axially aligned in an abutting relationship with the wrapped tobacco rod.
  • the filter typically comprises a filtration material which is circumscribed by a plug wrap.
  • the wrapped tobacco rod and the filter are joined together by a wrapped band of tipping paper that circumscribes the entire length of the filter and an adjacent portion of the wrapped tobacco rod.
  • a conventional cigarette of this type is used by lighting the end opposite to the filter, and burning the tobacco rod. The smoker receives mainstream smoke into their mouth by drawing on the mouth end or filter end of the cigarette.
  • Such heat not burn system can form part of nicotine replacement therapies aimed at people who wish to stop smoking and overcome a dependence on nicotine.
  • Heat not burn system include electronic systems that permit a user to simulate the act of smoking by producing an aerosol (also referred to as a“vapour”) that is drawn into the lungs through the mouth (inhaled) and then exhaled.
  • aerosol also referred to as a“vapour”
  • the inhaled aerosol typically bears nicotine and/or flavourings without, or with fewer of, the odour and health risks associated with traditional smoking.
  • heat not burn system are intended to provide a substitute for the rituals of smoking, whilst providing the user with a similar experience and satisfaction to those experienced with traditional smoking and with combustible tobacco products.
  • Some heat not burn system use smoking substitute articles (also referred to as a“consumables”) that are designed to resemble a traditional cigarette and are cylindrical in form with a mouthpiece at one end.
  • HT Heated Tobacco
  • HNB Heat not burn
  • the tobacco may be leaf tobacco or reconstituted tobacco.
  • the vapour may contain nicotine and/or flavourings.
  • the intention is that the tobacco is heated but not burned, i.e. the tobacco does not undergo combustion.
  • a typical HT heat not burn system may include a device and a consumable.
  • the consumable may include the tobacco material.
  • the device and consumable may be configured to be physically coupled together.
  • heat may be imparted to the tobacco material by a heating element of the device, wherein airflow through the tobacco material causes components in the tobacco material to be released as vapour.
  • a vapour may also be formed from a carrier in the tobacco material (this carrier may for example include propylene glycol and/or vegetable glycerine) and additionally volatile compounds released from the tobacco.
  • the released vapour may be entrained in the airflow drawn through the tobacco.
  • the vapour passes through the consumable (entrained in the airflow) from the location of vaporisation to an outlet of the consumable (e.g. a mouthpiece), the vapour cools and condenses to form an aerosol for inhalation by the user.
  • the aerosol will normally contain the volatile compounds.
  • the present invention relates to heat not burn system including a feature of removably engaging the heater apparatus with the device.
  • the heat not burn system may include a device, which may include a power source. Further, the device comprises a heater apparatus, which includes a heater. The heater apparatus may be configured to removably engage with the device so that power may be supplied from the power source to the heater.
  • the device may facilitate an option for replacing the malfunctioning heater apparatus, thus eliminating the need of replacing the entire device.
  • Optional features will now be set out. These are applicable singly or in any combination with any aspect.
  • the heater apparatus may include a pair of heater electrical contacts for engagement with a corresponding pair of heater device contacts in the device.
  • This feature of providing heater electrical contacts, to contact with the heater device contacts eliminates the requirement of using conductive wires to connect the heater apparatus with the heater device (i.e. power source). This enables disengagement of the heater apparatus from the device with ease.
  • the device and heater apparatus include a locking mechanism to removably retain the heater apparatus in engagement with the device.
  • the locking mechanism may help in retaining the heater apparatus firmly within the device, when in use and also help in quick disengagement of the heater apparatus from the device for replacement.
  • the device may be configured to unlock the locking mechanism when the temperature of the heater apparatus is measured to be below a locking temperature threshold.
  • This feature of unlocking the locking mechanism, below the locking temperature threshold may prevent the user from contacting the heater apparatus in hot condition, and thus ensures safety of the user.
  • the device may be configured to unlock the locking mechanism when the pre-set cooling period is in the range of 20 to 100 seconds, preferably in the range of 45 to 90 seconds.
  • the cooling period ensures that the heater is cooled sufficiently, to ensure additional safety for the user.
  • the locking temperature threshold may be 50 degree Celsius. This locking temperature ensures operational safety for the user, as the heater apparatus may not be disengaged unless the temperature of the heater apparatus reaches a temperature less than or equal to the locking temperature threshold.
  • the heater apparatus contacts may be biased, and spring-loaded. This configuration of the heater apparatus contacts may maintain sufficient contact with the heater device contacts to receive the energy (i.e. voltage from the power source).
  • the heater apparatus may include a temperature sensing component.
  • the temperature sensing component may monitor the temperature of the heater apparatus, based on which the locking mechanism may be configured to unlock the heater apparatus from the device for disengagement.
  • the heater apparatus may include a pair of temperature sensing contacts for engagement with a corresponding pair of temperature measurement device contacts in the device.
  • the temperature measurement device contacts may be biased, and spring-loaded.
  • the spring-loaded contacts may facilitate in solderless interconnections between the contacts, and also eliminate the use of conductive wires to connect the heater apparatus and the heater device.
  • the device may be configured to determine when the heater apparatus is engaged with the device. [30] Optionally, the device may be configured to perform a calibration routine to calibrate the heater apparatus when the heater apparatus is brought into engagement with the device. Calibrating the heater apparatus may ensure accurate functioning according to preferred operational parameters of the heater apparatus.
  • the calibration routine may include of making a measurement of ambient temperature using an ambient temperature sensor of the device, the ambient temperature sensor may be located within a microcontroller of the device.
  • the calibration routine may further include of making a measurement of the resistance of the heating track and or the temperature sensing track.
  • the calibration routine may further include of making a measurement of the resistance of the heating track and or the temperature sensing track.
  • the heater apparatus may include an airflow channel to permit airflow to the heater in use. Air flow onto the heater apparatus may facilitate in improving aerosol formation and total particulate matter (TPM) output of the aerosol.
  • TPM total particulate matter
  • the device may comprise an elongate body.
  • An end of the elongate body may be configured for engagement with an aerosol-forming article.
  • the body may be configured for engagement with a heated tobacco (HT) consumable (or heat-not-burn (HNB) consumable).
  • HT heated tobacco
  • HNB heat-not-burn
  • the terms “heated tobacco” and“heat-not-burn” are used interchangeably herein to describe a consumable that is of the type that is heated rather than combusted (or are used interchangeably to describe a device for use with such a consumable).
  • the device may comprise a cavity that is configured for receipt of at least a portion of the consumable (i.e. for engagement with the consumable).
  • the aerosol-forming article may be of the type that comprises an aerosol former (e.g. carried by an aerosol-forming substrate).
  • the device may comprise a heater apparatus (also referred as heater) for heating the aerosolforming article.
  • the heater may comprise a heating element, which may be in the form of a rod that extends from the body of the device.
  • the heating element may extend from the end of the body that is configured for engagement with the aerosol-forming article.
  • the heater (and thus the heating element) may be rigidly mounted to the body.
  • the heating element may be elongate so as to define a longitudinal axis and may, for example, have a transverse profile (i.e. transverse to a longitudinal axis of the heating element) that is substantially circular (i.e. the heating element may be generally cylindrical).
  • the heating element may have a transverse profile that is rectangular (i.e. the heater may be a“blade heater”).
  • the heating element may alternatively be in the shape of a tube (i.e. the heater may be a“tube heater”).
  • the heating element may take other forms (e.g. the heating element may have an elliptical transverse profile).
  • the shape and/or size e.g.
  • the diameter of the transverse profile of the heating element may be generally consistent for the entire length (or substantially the entire length) of the heating element.
  • the heating element may be between 15 mm and 25 mm long, e.g. between 18 mm and 20 mm long, e.g. around 19 mm long.
  • the heating element may have a diameter of between 1.5 mm and 2.5 mm, e.g. a diameter between 2 mm and 2.3 mm, e.g. a diameter of around 2.15 mm.
  • the heating element may be formed of ceramic.
  • the heating element may comprise a core (e.g. a ceramic core) comprising AI203.
  • the core of the heating element may have a diameter of 1.8 mm to 2.1 mm, e.g. between 1 .9 mm and 2 mm.
  • the heating element may comprise an outer layer (e.g. an outer ceramic layer) comprising AI203.
  • the thickness of the outer layer may be between 160 pm and 220 pm, e.g. between 170 pm and 190 pm, e.g. around 180 pm.
  • the heating element may comprise a heating track, which may extend longitudinally along the heating element.
  • the heating track may be sandwiched between the outer layer and the core of the heating element.
  • the heating track may comprise tungsten and/or rhenium.
  • the heating track may have a thickness of around 20 pm.
  • the heating element may be located in the cavity (of the device), and may extend (e.g. along a longitudinal axis) from an internal base of the cavity towards an opening of the cavity.
  • the length of the heating element i.e. along the longitudinal axis of the heater
  • the heating element may be less than the depth of the cavity.
  • the heating element may extend for only a portion of the length of the cavity. That is, the heating element may not extend through (or beyond) the opening of the cavity.
  • the heating element may be configured for insertion into an aerosol-forming article (e.g. a HT consumable) when an aerosol-forming article is received in the cavity.
  • a distal end (i.e. distal from a base of the heating element where it is mounted to the device) of the heating element may comprise a tapered portion, which may facilitate insertion of the heating element into the aerosol-forming article.
  • the heating element may fully penetrate an aerosol-forming article when the aerosol-forming article is received in the cavity. That is, the entire length, or substantially the entire length, of the heating element may be received in the aerosol-forming article.
  • the heating element may have a length that is less than, or substantially the same as, an axial length of an aerosol-forming substrate forming part of an aerosol-forming article (e.g. a HT consumable).
  • an aerosol-forming substrate forming part of an aerosol-forming article (e.g. a HT consumable).
  • the heating element may only penetrate the aerosol-forming substrate, rather than other components of the aerosol-forming article.
  • the heating element may penetrate the aerosol-forming substrate for substantially the entire axial length of the aerosol forming-substrate of the aerosol-forming article.
  • heat may be transferred from (e.g. an outer circumferential surface of) the heating element to the surrounding aerosol-forming substrate, when penetrated by the heating element. That is, heat may be transferred radially outwardly (in the case of a cylindrical heating element) or e.g. radially inwardly (in the case of a tube heater).
  • the heating element of the tube heater may surround at least a portion of the cavity.
  • the heating element may surround a portion of the aerosol-forming article (i.e. so as to heat that portion of the aerosol-forming article).
  • the heating element may surround an aerosol forming substrate of the aerosol-forming article. That is, when an aerosol-forming article is engaged with the device, the aerosol forming substrate of the aerosol-forming article may be located adjacent an inner surface of the (tubular) heating element. When the heating element is activated, heat may be transferred radially inwardly from the inner surface of the heating element to heat the aerosol forming substrate.
  • the cavity may comprise a (e.g. circumferential) wall (or walls) and the (tubular) heating element may extend around at least a portion of the wall(s).
  • the wall may be located between the inner surface of the heating element and an outer surface of the aerosol-forming article.
  • the wall (or walls) of the cavity may be formed from a thermally conductive material (e.g. a metal) to allow heat conduction from the heating element to the aerosol-forming article.
  • heat may be conducted from the heating element, through the cavity wall (or walls), to the aerosol-forming substrate of an aerosolforming article received in the cavity.
  • the device may comprise a cap disposed at the end of the body that is configured for engagement with an aerosol-forming article.
  • the cap may at least partially enclose the heating element.
  • the cap may be moveable between an open position in which access is provided to the heating element, and a closed position in which the cap at least partially encloses the heating element.
  • the cap may be slideably engaged with the body of the device, and may be slideable between the open and closed positions.
  • the cap may define at least a portion of the cavity of the device. That is, the cavity may be fully defined by the cap, or each of the cap and body may define a portion of the cavity. Where the cap fully defines the cavity, the cap may comprise an aperture for receipt of the heating element into the cavity (when the cap is in the closed position).
  • the cap may comprise an opening to the cavity. The opening may be configured for receipt of at least a portion of an aerosol-forming article. That is, an aerosolforming article may be inserted through the opening and into the cavity (so as to be engaged with the device).
  • the cap may be configured such that when an aerosol-forming article is engaged with the device (e.g. received in the cavity), only a portion of the aerosol-forming article is received in the cavity. That is, a portion of the aerosol-forming article (not received in the cavity) may protrude from (i.e. extend beyond) the opening.
  • This (protruding) portion of the aerosol-forming article may be a terminal (e.g. mouth) end of the aerosol-forming article, which may be received in a user’s mouth for the purpose of inhaling aerosol formed by the device.
  • the device may comprise a power source or may be connectable to a power source (e.g. a power source separate to the device).
  • the power source may be electrically connectable to the heater. In that respect, altering (e.g. toggling) the electrical connection of the power source to the heater may affect a state of the heater. For example, toggling the electrical connection of the power source to the heater may toggle the heater between an on state and an off state.
  • the power source may be a power store.
  • the power source may be a battery or rechargeable battery (e.g. a lithium ion battery).
  • the device may comprise an input connection (e.g. a USB port, Micro USB port, USB-C port, etc.).
  • the input connection may be configured for connection to an external source of electrical power, such as a mains electrical supply outlet.
  • the input connection may, in some cases, be used as a substitute for an internal power source (e.g. battery or rechargeable battery). That is, the input connection may be electrically connectable to the heater (for providing power to the heater).
  • the input connection may form at least part of the power source of the device.
  • the input connection may be used to charge and recharge the power source.
  • the device may comprise a user interface (Ul).
  • the Ul may include input means to receive operative commands from the user.
  • the input means of the Ul may allow the user to control at least one aspect of the operation of the device.
  • the input means may comprise a power button to switch the device between an on state and an off state.
  • the Ul may additionally or alternatively comprise output means to convey information to the user.
  • the output means may comprise a light to indicate a condition of the device (and/or the aerosol-forming article) to the user.
  • the condition of the device (and/or aerosol-forming article) indicated to the user may comprise a condition indicative of the operation of the heater.
  • the condition may comprise whether the heater is in an off state or an on state.
  • the Ul unit may comprise at least one of a button, a display, a touchscreen, a switch, a light, and the like.
  • the output means may comprise one or more (e.g. two, three, four, etc.) light-emitting diodes (“LEDs”) that may be located on the body of the device.
  • LEDs light-emitting diodes
  • the device may further comprise a puff sensor (e.g. airflow sensor), which form part of the input means of the Ul.
  • the puff sensor may be configured to detect a user drawing on an end (i.e. a terminal (mouth) end) of the aerosol-forming article.
  • the puff sensor may, for example, be a pressure sensor or a microphone.
  • the puff sensor may be configured to produce a signal indicative of a puff state.
  • the signal may be indicative of the user drawing (an aerosol from the aerosol-forming article) such that it is e.g. in the form of a binary signal.
  • the signal may be indicative of a characteristic of the draw (e.g. a flow rate of the draw, length of time of the draw, etc).
  • the device may comprise a controller, or may be connectable to a controller that may be configured to control at least one function of the device.
  • the controller may comprise a microcontroller that may e.g. be mounted on a printed circuit board (PCB).
  • the controller may also comprise a memory, e.g. nonvolatile memory.
  • the memory may include instructions, which, when implemented, may cause the controller to perform certain tasks or steps of a method. Where the device comprises an input connection, the controller may be connected to the input connection.
  • the controller may be configured to control the operation of the heater (and e.g. the heating element). Thus, the controller may be configured to control vaporisation of an aerosol forming part of an aerosol-forming article engaged with the device.
  • the controller may be configured to control the voltage applied by power source to the heater. For example, the controller may be configured to toggle between applying a full output voltage (of the power source) to the heater and applying no voltage to the heater.
  • the control unit may implement a more complex heater control protocol.
  • the device may further comprise a voltage regulator to regulate the output voltage supplied by the power source to form a regulated voltage. The regulated voltage may subsequently be applied to the heater.
  • the controller may be operatively connected to one or more components of the Ul.
  • the controller may be configured to receive command signals from an input means of the Ul.
  • the controller may be configured to control the heater in response to the command signals.
  • the controller may be configured to receive “on” and “off command signals from the Ul and, in response, may control the heater so as to be in a corresponding on or off state.
  • the controller may be configured to send output signals to a component of the Ul.
  • the Ul may be configured to convey information to a user, via an output means, in response to such output signals (received from the controller).
  • the LEDs may be operatively connected to the controller.
  • the controller may configured to control the illumination of the LEDs (e.g. in response to an output signal).
  • the controller may be configured to control the illumination of the LEDs according to (e.g. an on or off) state of the heater.
  • the controller may be operatively connected to the sensor.
  • the controller may be configured to receive a signal from the sensor (e.g. indicative of a condition of the device and/or engaged aerosol-forming article).
  • the controller may be configured to control the heater, or an aspect of the output means, based on the signal from the sensor.
  • the device may comprise a wireless interface configured to communicate wirelessly (e.g. via Bluetooth (e.g. a Bluetooth low-energy connection) or WiFi) with an external device.
  • the input connection may be configured for wired connection to an external device so as to provide communication between the device and the external device.
  • the external device may be a mobile device.
  • the external device may be a smart phone, tablet, smart watch, or smart car.
  • An application e.g. app
  • the application may facilitate communication between the device and the external device via the wired or wireless connection.
  • the wireless or wired interface may be configured to transfer signals between the external device and the controller of the device.
  • the controller may control an aspect of the device in response to a signal received from an external device.
  • an external device may respond to a signal received from the device (e.g. from the controller of the device).
  • the system (e.g. a heat not burn system) comprising a device and an aerosol-forming article.
  • the aerosol-forming article may comprise an aerosol-forming substrate at an upstream end of the aerosolforming article.
  • the article may be in the form of a smoking substitute article, e.g. heated tobacco (HT) consumable (also known as a heat-not-burn (HNB) consumable).
  • HT heated tobacco
  • HNB heat-not-burn
  • the terms’’upstream” and“downstream” are intended to refer to the flow direction of the vapour/aerosol i.e. with the downstream end of the article/consumable being the mouth end or outlet where the aerosol exits the consumable for inhalation by the user.
  • the upstream end of the article/consumable is the opposing end to the downstream end.
  • the aerosol-forming substrate is capable of being heated to release at least one volatile compound that can form an aerosol.
  • the aerosol-forming substrate may be located at the upstream end of the article/consumable.
  • the aerosol-forming substrate comprises at least one volatile compound that is intended to be vaporised/aerosolised and that may provide the user with a recreational and/or medicinal effect when inhaled.
  • Suitable chemical and/or physiologically active volatile compounds include the group consisting of: nicotine, cocaine, caffeine, opiates and opoids, cathine and cathinone, kavalactones, mysticin, beta-carboline alkaloids, salvinorin A together with any combinations, functional equivalents to, and/or synthetic alternatives of the foregoing.
  • the aerosol-forming substrate may comprise plant material.
  • the plant material may comprise least one plant material selected from the list including Amaranthus dubius, Arctostaphylos uva-ursi (Bearberry), Argemone mexicana, Arnica, Artemisia vulgaris, Yellow Tees, Galea zacatechichi, Canavalia maritima (Baybean), Cecropia mexicana (Guamura), Oestrum noctumum, Cynoglossum virginianum (wild comfrey), Cytisus scoparius, Damiana, Entada rheedii, Eschscholzia califomica (California Poppy), Fittonia albivenis, Hippobroma longiflora, Humulus japonica (Japanese Hops), Humulus lupulus (Hops), Lactuca virosa (Lettuce Opium), Laggera alata, Leonotis
  • the plant material may be tobacco. Any type of tobacco may be used. This includes, but is not limited to, flue-cured tobacco, burley tobacco, Maryland Tobacco, dark-air cured tobacco, oriental tobacco, dark-fired tobacco, perique tobacco and rustica tobacco. This also includes blends of the above mentioned tobaccos.
  • the tobacco may comprise one or more of leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogenised tobacco, shredded tobacco, extruded tobacco, cut rag tobacco and/or reconstituted tobacco (e.g. slurry recon or paper recon).
  • the aerosol-forming substrate may comprise a gathered sheet of homogenised (e.g. paper/slurry recon) tobacco or gathered shreds/strips formed from such a sheet.
  • the aerosol-forming substrate may comprise one or more additives selected from humectants, flavourants, fillers, aqueous/non-aqueous solvents and binders.
  • the flavourant may be provided in solid or liquid form. It may include menthol, liquorice, chocolate, fruit flavour (including e.g. citrus, cherry etc.), vanilla, spice (e.g. ginger, cinnamon) and tobacco flavour.
  • the flavourant may be evenly dispersed throughout the aerosol-forming substrate or may be provided in isolated locations and/or varying concentrations throughout the aerosol-forming substrate.
  • the aerosol-forming substrate may be formed in a substantially cylindrical shape such that the article/consumable resembles a conventional cigarette. It may have a diameter of between 5 and 10mm e.g. between 6 and 9mm or 6 and 8mm e.g. around 7 mm. It may have an axial length of between 10 and 15mm e.g. between 1 1 and 14mm such as around 12 or 13mm.
  • the article/consumable may comprise at least one filter element. There may be a terminal filter element at the downstream/mouth end of the article/consumable.
  • the or at least one of the filter element(s) may be comprised of cellulose acetate or polypropylene tow.
  • the at least one filter element e.g. the terminal filter element
  • the at least one filter element may be comprised of activated charcoal.
  • the at least one filter element (e.g. the terminal element) may be comprised of paper.
  • the or each filter element may be at least partly (e.g. entirely) circumscribed with a plug wrap e.g. a paper plug wrap.
  • the terminal filter element (at the downstream end of the article/consumable) may be joined to the upstream elements forming the article/consumable by a circumscribing tipping layer e.g. a tipping paper layer.
  • the tipping paper may have an axial length longer than the axial length of the terminal filter element such that the tipping paper completely circumscribes the terminal filter element plus the wrapping layer surrounding any adjacent upstream element.
  • the article/consumable may comprise an aerosol-cooling element which is adapted to cool the aerosol generated from the aerosol-forming substrate (by heat exchange) before being inhaled by the user.
  • the article/consumable may comprise a spacer element that defines a space or cavity between the aerosol-forming substrate and the downstream end of the consumable.
  • the spacer element may comprise a cardboard tube.
  • the spacer element may be circumscribed by the (paper) wrapping layer.
  • the invention includes the combination of the aspects and preferred features described except where such a combination is clearly impermissible or expressly avoided.
  • Figure 1A is a schematic of a heat not burn system
  • Figure 1 B is a schematic of a variation of the heat not burn system of Figure 1A;
  • Figure 2A is a front view of a first embodiment of a heat not burn system with the consumable engaged with the device;
  • Figure 2B is a front view of the first embodiment of the heat not burn system with the consumable disengaged from the device;
  • Figure 2C is a section view of the consumable of the first embodiment of the heat not burn system
  • Figure 2D is a detailed view of an end of the device of the first embodiment of the heat not burn system
  • Figure 2E is a section view of the first embodiment of the substitute smoking system
  • Figure 3A is a magnified view of portion A of figure 2E, showing locking mechanism in a locked position.
  • Figure 3B is a magnified view of portion A of figure 2E, showing the locking mechanism in an unlocked position.
  • FIG. 1A is a schematic providing a general overview of a heat not burn system 100.
  • the system 100 includes a substitute smoking device 101 and an aerosol-forming article in the form of a consumable 102, which comprises an aerosol former 103.
  • the system is configured to vaporise the aerosol former by heating the aerosol former 103 (so as to form a vapour/aerosol for inhalation by a user).
  • the heater 104 forms part of the consumable 102 and is configured to heat the aerosol former 103.
  • the heater 104 is electrically connectable to the power source 105, for example, when the consumable 102 is engaged with the device 101 .
  • Heat from the heater 104 vaporises the aerosol former 103 to produce a vapour.
  • the vapour subsequently condenses to form an aerosol, which is ultimately inhaled by the user.
  • the system 100 further comprises a power source 105 that forms part of the device 101 .
  • the power source 105 may be external to (but connectable to) the device 101 .
  • the power source 105 is electrically connectable to the heater 104 such that it is able to supply power to the heater 104 (i.e. for the purpose of heating the aerosol former 103).
  • control of the electrical connection of the power source 105 to the heater 104 provides control of the state of the heater 104.
  • 105 may be a power store, for example a battery or rechargeable battery (e.g. a lithium ion battery).
  • a battery or rechargeable battery e.g. a lithium ion battery
  • the system 100 further comprises an I/O module comprising a connector 106 (e.g. in the form of a USB port, Micro USB port, USB-C port, etc.).
  • the connector 106 is configured for connection to an external source of electrical power, e.g. a mains electrical supply outlet.
  • the connector 106 may be used in substitution for the power source 105. That is the connector 106 may be electrically connectable to the heater 104 so as to supply electricity to the heater 104.
  • the device may not include a power source, and the power source of the system may instead comprise the connector 106 and an external source of electrical power (to which the connector 106 provides electrical connection).
  • the connector 106 may be used to charge and recharge the power source 105 where the power source 105 includes a rechargeable battery.
  • the system 100 also comprises a user interface (Ul) 107.
  • the Ul 107 may include input means to receive commands from a user.
  • the input means of the Ul 107 allows the user to control at least one aspect of the operation of the system 100.
  • the input means may, for example, be in the form of a button, touchscreen, switch, microphone, etc.
  • the Ul 107 also comprises output means to convey information to the user.
  • the output means may, for example, comprise lights (e.g. LEDs), a display screen, speaker, vibration generator, etc.
  • the system 100 further comprises a controller 108 that is configured to control at least one function of the device 101 .
  • the controller 108 is a component of the device 101 , but in other embodiments may be separate from (but connectable to) the device 101 .
  • the controller 108 is configured to control the operation of the heater 104 and, for example, may be configured to control the voltage applied from the power source 105 to the heater 104.
  • the controller 108 may be configured to toggle the supply of power to the heater 104 between an on state, in which the full output voltage of the power source 105 is applied to the heater 104, and an off state, in which the no voltage is applied to the heater 104.
  • the system 100 may also comprise a voltage regulator to regulate the output voltage from the power source 105 to form a regulated voltage.
  • the regulated voltage may then be applied to the heater 104.
  • the controller 108 is operatively connected to the Ul 107.
  • the controller 108 may receive an input signal from the input means of the Ul 107.
  • the controller 108 may transmit output signals to the Ul 107.
  • the output means of the Ul 107 may convey information, based on the output signals, to a user.
  • the controller also comprises a memory 109, which is a non-volatile memory.
  • the memory 109 includes instructions, which, when implemented, cause the controller to perform certain tasks or steps of a method.
  • Figure 1 B is a schematic showing a variation of the system 100 of Figure 1A.
  • the heater 104 forms part of the device 101 , rather than the consumable 102.
  • the heater 104 is electrically connected to the power source 105.
  • Figures 2A and 2B illustrate a heated-tobacco (HT) heat not burn system 200.
  • the system 200 is an example of the systems 100, 100’ described in relation to Figures 1A or 1 B.
  • System 200 includes an HT device 201 and an HT consumable 202.
  • the description of Figures 1A and 1 B above is applicable to the system 200 of Figures 2A and 2B, and will thus not be repeated.
  • the device 201 and the consumable 202 are configured such that the consumable 202 can be engaged with the device 201.
  • Figure 2A shows the device 201 and the consumable 202 in an engaged state
  • Figure 2B shows the device 201 and the consumable 202 in a disengaged state.
  • the device 201 comprises a body 209 and cap 210.
  • the cap 210 is engaged at an end of the body 209.
  • the cap 210 is moveable relative to the body 209.
  • the cap 210 is slideable and can slide along a longitudinal axis of the body 209.
  • the device 201 comprises an output means (forming part of the Ul of the device 201) in the form of a plurality of light-emitting diodes (LEDs) 21 1 arranged linearly along the longitudinal axis of the device 201 and on an outer surface of the body 209 of the device 201.
  • a button 212 is also arranged on an outer surface of the body 209 of the device 201 and is axially spaced (i.e. along the longitudinal axis) from the plurality of LEDs 211.
  • FIG. 2C show a detailed section view of the consumable of 202 of the system 200.
  • the consumable 202 generally resembles a cigarette.
  • the consumable 202 has a generally cylindrical form with a diameter of 7 mm and an axial length of 70 mm.
  • the consumable 202 comprises an aerosol forming substrate 213, a terminal filter element 214, an upstream filter element 215 and a spacer element 216.
  • the consumable may further comprise a cooling element.
  • a cooling element may exchange heat with vapour that is formed by the aerosol-forming substrate 213 in order to cool the vapour so as to facilitate condensation of the vapour.
  • the aerosol-forming substrate 213 is substantially cylindrical and is located at an upstream end 217 of the consumable 202, and comprises the aerosol former of the system 200.
  • the aerosol forming substrate 213 is configured to be heated by the device 201 to release a vapour.
  • the released vapour is subsequently entrained in an airflow flowing through the aerosol-forming substrate 213.
  • the airflow is produced by the action of the user drawing on a downstream 218 (i.e. terminal or mouth) end of the consumable 202.
  • the aerosol forming substrate 213 comprises tobacco material that may, for example, include any suitable parts of the tobacco plant (e.g. leaves, stems, roots, bark, seeds and flowers).
  • the tobacco may comprise one or more of leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogenised tobacco, shredded tobacco, extruded tobacco, cut rag tobacco and/or reconstituted tobacco (e.g. slurry recon or paper recon).
  • the aerosol-forming substrate 213 may comprise a gathered sheet of homogenised (e.g. paper/slurry recon) tobacco or gathered shreds/strips formed from such a sheet.
  • the aerosol forming substrate 213 comprises at least one volatile compound that is intended to be vaporised/aerosolised and that may provide the user with a recreational and/or medicinal effect when inhaled.
  • the aerosol-forming substrate 213 may further comprise one or more additives.
  • additives may be in the form of humectants (e.g. propylene glycol and/or vegetable glycerine), flavourants, fillers, aqueous/non-aqueous solvents and/or binders.
  • the terminal filter element 214 is also substantially cylindrical, and is located downstream of the aerosol forming substrate 213 at the downstream end 218 of the consumable 202.
  • the terminal filter element 214 is in the form of a hollow bore filter element having a bore 219 (e.g. for airflow) formed therethrough. The diameter of the bore 219 is 2 mm.
  • the terminal filter element 214 is formed of a porous (e.g. monoacetate) filter material.
  • the downstream end 218 of the consumable 202 i.e. where the terminal filter 214 is located
  • Airflow is drawn from the upstream end 217, thorough the components of the consumable 202, and out of the downstream end 218.
  • the airflow is driven by the user drawing on the downstream end 218 (i.e. the mouthpiece portion) of the consumable 202.
  • the upstream filter element 215 is located axially adjacent to the aerosol-forming substrate 213, between the aerosol-forming substrate 213 and the terminal filter element 214. Like the terminal filter 214, the upstream filter element 215 is in the form of a hollow bore filter element, such that it has a bore 220 extending axially therethrough. In this way, the upstream filter 215 may act as an airflow restrictor.
  • the upstream filter element 215 is formed of a porous (e.g. monoacetate) filter material.
  • the bore 220 of the upstream filter element 215 has a larger diameter (3 mm) than the terminal filter element 214.
  • the spacer 216 is in the form of a cardboard tube, which defines a cavity or chamber between the upstream filter element 215 and the terminal filter element 214.
  • the spacer 216 acts to allow both cooling and mixing of the vapour/aerosol from the aerosol-forming substrate 213.
  • the spacer has an external diameter of 7 mm and an axial length of 14mm.
  • the aerosol-forming substrate 213, upstream filter 215 and spacer 216 are circumscribed by a paper wrapping layer.
  • the terminal filter 214 is circumscribed by a tipping layer that also circumscribes a portion of the paper wrapping layer (so as to connect the terminal filter 214 to the remaining components of the consumable 202).
  • the upstream filter 215 and terminal filter 214 are circumscribed by further wrapping layers in the form of plug wraps.
  • FIG. 2D illustrates a detailed view of the end of the device 201 that is configured to engage with the consumable 202.
  • the cap 210 of the device 201 includes an opening 221 to an internal cavity 222 (more apparent from Figure 2D) defined by the cap 210.
  • the opening 221 and the cavity 222 are formed so as to receive at least a portion of the consumable 202.
  • a portion of the consumable 202 is received through the opening 221 and into the cavity 222.
  • the downstream end 218 of the consumable 202 protrudes from the opening 221 and thus also protrudes from the device 201.
  • the opening 221 includes laterally disposed notches 226. When a consumable 202 is received in the opening 221 , these notches 226 remain open and could, for example, be used for retaining a cover in order to cover the end of the device 201.
  • Figure 2E shows a cross section through a central longitudinal plane through the device 201 .
  • the device 201 is shown with the consumable 202 engaged therewith.
  • the device 201 comprises a heater 204 comprising heating element 223.
  • the heater 204 forms part of the body 209 of the device 201 and is rigidly mounted to the body 209.
  • the heater 204 is a rod heater with a heating element 223 having a circular transverse profile.
  • the heater may be in the form of a blade heater (e.g. heating element with a rectangular transverse profile) or a tube heater (e.g. heating element with a tubular form).
  • the heating element 223 of the heater 204 projects from an internal base of the cavity 222 along a longitudinal axis towards the opening 221 .
  • the length (i.e. along the longitudinal axis) of the heating element is less than a depth of the cavity 222. In this way, the heating element 223 does not protrude from or extend beyond the opening 221.
  • the heating element 223 penetrates the aerosol-forming substrate 213 of the consumable 202.
  • the heating element 223 extends for nearly the entire axial length of the aerosol-forming substrate 213 when inserted therein.
  • the heater 204 is activated, heat is transferred radially from an outer circumferential surface the heating element 223 to the aerosol-forming substrate 213.
  • the device 201 further comprises an electronics cavity 224.
  • a power source in the form of a rechargeable battery 205 (a lithium ion battery), is located in electronics cavity 224.
  • the device 201 includes a connector (i.e. forming part of an IO module of the device 201) in the form of a USB port 206.
  • the connector may alternatively be, for example, a micro-USB port or a USB-C port for examples.
  • the USB port 206 may be used to recharge the rechargeable battery 205.
  • the device 201 includes a controller (not shown) located in the electronics cavity 224.
  • the controller comprises a microcontroller mounted on a printed circuit board (PCB).
  • PCB printed circuit board
  • the USB port 206 is also connected to the controller 208 (i.e. connected to the PCB and microcontroller).
  • the controller 208 is configured to control at least one function of the device 201.
  • the controller 208 is configured to control the operation of the heater 204.
  • Such control of the operation of the heater 204 may be accomplished by the controller toggling the electrical connection of the rechargeable battery 205 to the heater 204.
  • the controller 208 is configured to control the heater 204 in response to a user depressing the button 212. Depressing the button 212 may cause the controller to allow a voltage (from the rechargeable battery 205) to be applied to the heater 204 (so as to cause the heating element 223 to be heated).
  • the controller is also configured to control the LEDs 21 1 in response to (e.g. a detected) a condition of the device 201 or the consumable 202.
  • the controller may control the LEDs to indicate whether the device 201 is in an on state or an off state (e.g. one or more of the LEDs may be illuminated by the controller when the device is in an on state).
  • the device 201 comprises a further input means (i.e. in addition to the button 212) in the form of a puff sensor 225.
  • the puff sensor 225 is configured to detect a user drawing (i.e. inhaling) at the downstream end 218 of the consumable 202.
  • the puff sensor 225 may, for example, be in the form of a pressure sensor, flowmeter or a microphone.
  • the puff sensor 225 is operatively connected to the controller 208 in the electronics cavity 224, such that a signal from the puff sensor 225, indicative of a puff state (i.e. drawing or not drawing), forms an input to the controller 208 (and can thus be responded to by the controller 208).
  • the device 201 and the heater apparatus 204 may be configured with a locking mechanism 227.
  • the locking mechanism 227 may be configured to removably retain the heater 204, in engagement with the device 201 .
  • at least a pair electrical contacts 229 of the heater 204 may engage with corresponding electrical contacts (not shown) of the device 201 .
  • the electric contacts 229 of the device 201 may be biased by a suitable biasing means.
  • the biasing means may include a spring.
  • the spring-loaded electric contacts of the device 201 may undergo compression upon contact of the electric contacts 229 of the heater apparatus 204, and establish electric connection between the heater 204 and the device 201 . Further, the electrical contacts 229 of the device 201 may be directly or indirectly connected to the power source 205 (seen in figure. 2E) i.e. the rechargeable battery, to facilitate voltage supply to the heater 204.
  • the power source 205 i.e. the rechargeable battery
  • the locking mechanism 227 may comprise at least a pair of retaining elements 228, which may be configured to retain the heater 204 upon engagement with the device 201 .
  • the at least a pair of retaining elements 228 may be configured to pivot about a point, which may facilitate unlocking the locking mechanism 227 and thus, facilitates disengagement of the heater 204 from the device 201 .
  • the locking mechanism 227 may be operated by actuation means to move the retaining elements 228 between the locking position and the un-locking position.
  • the actuation means may be electrically operated or spring- loaded actuation means.
  • the heater 204 may be provided with a temperature sensing component (not shown).
  • the temperature sensing component may comprise a pair of temperature sensing contacts (not shown), which may engage with the corresponding contacts (not shown) of the temperature measurement device 201 .
  • the temperature sensing component and the temperature measuring device 201 may be adapted to monitor the temperature of the heater 204.
  • the temperature measuring contacts may be spring loaded contacts.
  • the temperature sensing component and the temperature measuring device 201 may be operatively connected to the controller (not shown).
  • the controller may receive a signal indicative of the temperature of the heater 204, in particular below a threshold value.
  • the threshold temperature may be about 40 degrees to 60 degrees, preferably 50 degrees.
  • the device 201 may comprise a voltage sensing unit (not shown) to monitor supply of voltage to the heater 204 and a cooling period of the heater 204 i.e. a threshold time period after off state of the heater 204.
  • the sensing unit may be operatively connected to the controller.
  • the controller may receive a signal indicative of the cooling period, in particular above the threshold value.
  • the threshold cooling time period may be about 20 seconds to 100 seconds, preferably 45 seconds to 90 seconds, after off state of the heater 204.
  • the temperature sensing component of the temperature measurement device 201 may provide a signal, indicative of the temperature of the heater 204 being below the threshold value, and the sensing unit may provide a signal, indicative of the cooling time period being above the threshold value may form an input signal to the controller. These corresponding signals, form an input signal to the controller. Based on the input signal, the controller may facilitate in unlocking the locking mechanism 227 i.e. the pair of retaining elements 228 may pivot about a point and may displace away from the heater 204. Thus, unlocking the locking mechanism 227 may facilitate in disengagement of the heater 204 from the device 201 .
  • This feature may facilitate in replacing the heater 204, without the need of replacing the entire device 201 , due to malfunction of the heater 204.
  • the locking mechanism 227 also prevents dislodging of the heater apparatus 204 in a hot condition, and thereby preventing potential injury to the user or damage to the device 201 . Further, the feature of dislodging the heater apparatus 204 from the device 201 , may facilitate in effective cleaning of the heater 204, which may facilitate in effective heat dissipation by the heater 204.
  • the locking mechanism 227 may include spring loaded retaining elements or slidable retaining elements, which may displace, to allow disengagement of the heater 204 from the device 201 .
  • the device 201 may be configured with a system (not shown) to determine the engagement of the heater 204 with the device 201 . Further, the device 201 may be configured with a calibrating system, which may be adapted to calibrate the heater 204, upon engagement of the heater 204 with the device 210.
  • the calibration routine may include measuring of ambient temperature. As an example, the ambient temperature may be measured by an ambient temperature sensor. In some embodiments, the ambient temperature sensor may be positioned within the microcontroller. Further, the calibration routine may include measurement of the resistance of the heating track and the temperature sensing track.
  • the heater apparatus 204 may include air flow channels (not shown), to facilitate flow of air onto the heating apparatus 204, which may facilitate in effective aerosol generation by the consumable 202 and total particulate matter (TPM) output of the aerosol.
  • TPM total particulate matter

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  • Catching Or Destruction (AREA)

Abstract

L'invention concerne un système de chauffage sans combustion comprenant un dispositif. Le dispositif comprend un appareil de chauffage qui comprend un élément chauffant. L'appareil de chauffage est conçu pour venir en prise de manière amovible avec le dispositif, de façon à fournir de l'énergie à l'appareil de chauffage à partir d'une source d'alimentation. Le dispositif et l'appareil de chauffage comprennent un mécanisme de verrouillage qui est conçu pour se déverrouiller lorsque la température de l'appareil de chauffage est inférieure au seuil et, lorsque la période de refroidissement est au-dessus du seuil, après l'arrêt de l'appareil de chauffage.
PCT/EP2020/056849 2019-03-22 2020-03-13 Système de chauffage sans combustion WO2020193223A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20715738.9A EP3941237A1 (fr) 2019-03-22 2020-03-13 Système de chauffage sans combustion
US17/479,939 US20220095692A1 (en) 2019-03-22 2021-09-20 Smoking Substitute System

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19020171.5 2019-03-22
EP19020171.5A EP3711539A1 (fr) 2019-03-22 2019-03-22 Système de chauffage sans combustion

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/056944 Continuation WO2020193237A1 (fr) 2019-03-22 2020-03-13 Système de substitution à l'acte de fumer

Related Child Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/056773 Continuation WO2020193176A1 (fr) 2019-03-22 2020-03-13 Système de substitution à l'acte de fumer

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WO2020193223A1 true WO2020193223A1 (fr) 2020-10-01

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EP (2) EP3711539A1 (fr)
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US11789476B2 (en) 2021-01-18 2023-10-17 Altria Client Services Llc Heat-not-burn (HNB) aerosol-generating devices including intra-draw heater control, and methods of controlling a heater

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US20180084831A1 (en) * 2015-04-07 2018-03-29 Philip Morris Products S.A. Sachet of aerosol-forming substrate, method of manufacturing same, and aerosol-generating device for use with sachet
WO2018202727A1 (fr) * 2017-05-02 2018-11-08 Philip Morris Products S.A. Ensemble chauffage pour un système de production d'aérosol
CN208242853U (zh) * 2018-04-24 2018-12-18 深圳市舜宝科技有限公司 一种电子烟杆的供热装置
KR20190016907A (ko) * 2017-08-09 2019-02-19 주식회사 케이티앤지 에어로졸 생성 장치용 히터

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WO2013060743A2 (fr) * 2011-10-25 2013-05-02 Philip Morris Products S.A. Dispositif générateur d'aérosol avec ensemble chauffant
US20180084831A1 (en) * 2015-04-07 2018-03-29 Philip Morris Products S.A. Sachet of aerosol-forming substrate, method of manufacturing same, and aerosol-generating device for use with sachet
WO2018202727A1 (fr) * 2017-05-02 2018-11-08 Philip Morris Products S.A. Ensemble chauffage pour un système de production d'aérosol
KR20190016907A (ko) * 2017-08-09 2019-02-19 주식회사 케이티앤지 에어로졸 생성 장치용 히터
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WO2023273642A1 (fr) * 2021-06-30 2023-01-05 深圳麦时科技有限公司 Dispositif de formation d'aérosol

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