WO2024094716A1 - Organe chauffant pour un dispositif de fourniture d'aérosol - Google Patents

Organe chauffant pour un dispositif de fourniture d'aérosol Download PDF

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Publication number
WO2024094716A1
WO2024094716A1 PCT/EP2023/080396 EP2023080396W WO2024094716A1 WO 2024094716 A1 WO2024094716 A1 WO 2024094716A1 EP 2023080396 W EP2023080396 W EP 2023080396W WO 2024094716 A1 WO2024094716 A1 WO 2024094716A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
aerosol
housing
heating member
heating element
Prior art date
Application number
PCT/EP2023/080396
Other languages
English (en)
Inventor
Mark Potter
Original Assignee
Nicoventures Trading 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 Nicoventures Trading Limited filed Critical Nicoventures Trading Limited
Publication of WO2024094716A1 publication Critical patent/WO2024094716A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F15/00—Receptacles or boxes specially adapted for cigars, cigarettes, simulated smoking devices or cigarettes therefor
    • A24F15/01—Receptacles or boxes specially adapted for cigars, cigarettes, simulated smoking devices or cigarettes therefor specially adapted for simulated smoking devices or cigarettes therefor
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor

Definitions

  • the present invention relates to a heating member for an aerosol provision device, an aerosol provision device, an aerosol provision system and a method of generating an aerosol.
  • Background Smoking articles such as cigarettes, cigars and the like burn tobacco during use to create tobacco smoke. Attempts have been made to provide alternatives to these articles by creating products that release compounds without combusting. Examples of such products are so-called “heat not burn” products or tobacco heating devices or products, which release compounds by heating, but not burning, material.
  • the material may be, for example, tobacco or other non-tobacco products, which may or may not contain nicotine.
  • Aerosol provision systems which cover the aforementioned devices or products, are known.
  • Common systems use heaters to create an aerosol from a suitable medium which is then inhaled by a user. Often the medium used needs to be replaced or changed to provide a different aerosol for inhalation.
  • resistive heating systems as heaters to create an aerosol from a suitable medium.
  • induction heating systems are known to be used as heaters.
  • a heating member for an aerosol provision device configured to heat at least a portion of an article comprising aerosol generating material to provide an aerosol
  • the heating member comprises an elongate housing, a heating element extending in the elongate housing, and at least one pre-formed element configured to position and retain the heating element in the elongate housing.
  • the pre-formed element may be formed into solid form prior to installation into the housing.
  • the pre-formed element may be manufactured into its final shape before the element is placed into the housing.
  • the at least one pre-formed element may be configured to position and retain the heating element in a position in which the heating element is free from contact with the housing.
  • the heating element may be a resistive heating element.
  • the heating element may be a heating coil.
  • the heating element may be a helical coil.
  • the coil may be a resistive heating heater coil
  • the heater may be an inductive heating heater.
  • the heating element may be an inductive heating element.
  • the heating coil may be an inductive coil.
  • the at least one pre-formed element may be formed from an electrically insulating material.
  • the elongate housing may define an inner void and the heating element may be located in the inner void.
  • the at least one pre-formed element may extend along substantially the whole length of the inner void.
  • the at least one pre-formed element may be configured to exert a radially inward force on a radially outer surface of the heating element to prevent the heating element from moving axially.
  • a radially inner surface of the at least one pre-formed element may be shaped to match or complement a radially outer surface of the heating element.
  • a radially outer surface of the heating element may be at least partially in contact with a radially inner surface of the at least one pre-formed element.
  • the at least one pre-formed element may be shaped to complement an inner surface of the elongate housing.
  • the at least one pre- formed element may have a cylindrical shape.
  • the at least one pre-formed element may comprise a cylindrical element.
  • a radially outer surface of the at least one pre-formed element complements and is in at least partial contact with an inner surface of the P1312349282397513; 162324 elongate housing.
  • a radially inner surface of the at least one pre-formed element defines a central void in which the heating element is located. At least part of the at least one pre-formed element may be formed from an elastic material. At least part of the at least one preformed element may be compressed between the heating element and an inner surface of the housing to hold the heating element in place relative to the elongate housing. The at least one pre-formed element may hold the heating element in place using friction such that the heating element is removable from the elongate housing.
  • the at least one pre-formed element may be formed from an electrically insulating material.
  • the at least one pre-formed element may be formed from an elastomeric material.
  • the at least one pre-formed element may be formed from rubber.
  • the at least one pre-formed element may be formed from plastic or ceramic.
  • the at least one pre-formed element may be formed from a thermally conductive material.
  • the at least preformed element may extend along the heating element.
  • the at least one preformed element may be in abutment with a radially outer surface of the heating element.
  • the at least one preformed element may be attached to at least part of an inner surface of housing.
  • the at least one preformed element may be attached to at least part of a radially outer surface of the heating element.
  • the at least one preformed element may extend along a majority of a length of the heating element.
  • the at least one preformed element may extend along 75% of a length of the heating element.
  • the at least one preformed element may extend along 90% of a length of the heating element.
  • the at least one preformed element may extend along the whole length of a length of the heating element.
  • the at least preformed element may comprise at least two pre-formed elements surrounding the heating element.
  • the at least one preformed element may comprise at least three pre-formed elements surrounding the heating element.
  • the at least two elements may be shaped to complement the shape of the elongate housing.
  • the at least one pre-formed element may comprise a helical surface for supporting the heating coil.
  • the heating coil may have variable pitch along its length. The pitch of the heating coil may be larger in a central portion of the heating coil than in two end portions of the heating coil.
  • the heating element may be formed from a continuous length of heating material which may have a variety of cross-sectional profiles.
  • the continuous length of heating P1312349282397513; 162324 material may have a constant cross-sectional profile.
  • the continuous length of heating material may have a circular cross-sectional profile.
  • the continuous length of heating material may have a rectangular cross-sectional profile.
  • the continuous length of heating material may have a flat cross-sectional profile.
  • the at least one pre-formed element may comprise a portion located between a free end of the heating coil and the housing.
  • An inner void of the elongate housing may be at least partially filled with a filler material.
  • the filler material may be located inside the heater element.
  • the filler material may be located inside the coil windings.
  • a method of manufacturing a heating member for an aerosol provision device configured to heat at least a portion of an article comprising aerosol generating material to provide an aerosol, wherein the method comprises providing an elongate housing with a longitudinal axis, forming at least one element and after forming the at least one element, placing the at least one pre-formed element in the housing to retain and position the heating in the housing.
  • the method may comprise placing at least part of the at least one element between the housing and the heating element.
  • Forming the at least one element may comprise using a mould to form the shape of the at least one element.
  • Forming the at least one element may comprise using additive manufacturing to form the shape of the at least one element. Forming the at least one element may comprise cutting material to form the final shape of the at least one element.
  • the method may comprise securing the at least one element into the elongate housing before then placing the heating coil in the housing. The method may further comprise securing the at least one element into the elongate housing using an adhesive. The method may comprise securing the at least one pre-formed element to the heating element before inserting the heating element and the element into the housing. The method may comprise using adhesive before inserting the heating element and the element into the housing. The method may further comprise inserting a filler material into the housing. The filler material may be provided inside the heating element.
  • the method may further comprise providing a filler material inside the heating element, before inserting the heating element and the element into the housing.
  • aerosol provision device configured to heat an article comprising aerosol generating material, the device comprising a heating member described above.
  • the aerosol provision device may comprise a heating chamber, in which the heater is provided. P1312349282397513; 162324
  • the aerosol provision device may comprise a power source, a controller and a heating chamber, in which the aerosol generating article is removeable received.
  • the power source may be aligned along a longitudinal axis of the heating chamber.
  • the power source may be aligned along a second longitudinal axis, parallel to the longitudinal axis of the heating chamber.
  • the aerosol provision device may be configured for wireless charging.
  • an aerosol provision system comprising: an aerosol provision device as described above; and an article comprising aerosol generating material.
  • the aerosol provision system may comprise a charging unit having a cavity for removably receiving the aerosol provision device.
  • the charging unit may comprise a moveable lid, which covers the aerosol provision device in a closed configuration.
  • the charging unit may comprise a user display. The user display may be visible to a user when the moveable lid is in a closed position and is partially or fully concealed or obscured from sight by the lid when the lid is an open position.
  • FIG. 1 shows a perspective view of an aerosol provision system including an aerosol provision device located within a charging unit
  • Figure 2 shows a schematic cross-sectional view of part of the aerosol provision device of Figure 1
  • Figure 3 shows a schematic cross-sectional view of part of the aerosol provision device of Figure 1 and an aerosol generating article of the aerosol provision system
  • Figure 4 shows a perspective view of another aerosol provision device
  • Figure 5 shows a schematic cross-sectional view of the device of Figure 4
  • Figure 6 shows a schematic cross-sectional view of a heating member for the device of Figure 1 or Figure 4
  • Figure 7 shows a schematic cross-sectional view of another heating member for P131234928239
  • a “non-combustible” aerosol provision system is one where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user.
  • the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.
  • the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosol- generating material is not a requirement.
  • the non-combustible aerosol provision system is an aerosol-generating material heating system, also known as a heat-not-burn system.
  • An example of such a system is a tobacco heating system.
  • the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated.
  • Each of the aerosol-generating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine.
  • the hybrid system comprises a liquid or gel aerosol-generating material and a solid aerosol-generating material.
  • the solid aerosol-generating material may comprise, for example, tobacco or a non-tobacco product.
  • the non-combustible aerosol provision system may comprise a non-combustible aerosol provision device and a consumable for use with the non- combustible aerosol provision device.
  • the non-combustible aerosol provision device may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and/or an aerosol-modifying agent.
  • the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosol- generating material storage area, an aerosol-generating material transfer P1312349282397513; 162324 component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and/or an aerosol-modifying agent.
  • aerosol-generating material is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way.
  • Aerosol-generating material may, for example, be in the form of a solid, liquid or semi-solid (such as a gel) which may or may not contain an active substance and/or flavourants.
  • the aerosol-generating material may comprise one or more active substances and/or flavours, one or more aerosol-former materials, and optionally one or more other functional material.
  • the aerosol-generating material may comprise a binder, such as a gelling agent, and an aerosol former.
  • a substance to be delivered and/or filler may also be present.
  • a solvent such as water, is also present and one or more other components of the aerosol-generating material may or may not be soluble in the solvent.
  • the aerosol-generating material is substantially free from botanical material.
  • the aerosol-generating material is substantially tobacco free.
  • the aerosol-generating material may comprise or be in the form of an aerosol-generating film.
  • the aerosol-generating film may comprise a binder, such as a gelling agent, and an aerosol former.
  • a substance to be delivered and/or filler may also be present.
  • the aerosol-generating film may be substantially free from botanical material.
  • the aerosol-generating material is substantially tobacco free.
  • the aerosol-generating film may have a thickness of about 0.015 mm to about 1 mm. For example, the thickness may be in the range of about 0.05 mm, 0.1 mm or 0.15 mm to about 0.5 mm or 0.3 mm.
  • the aerosol-generating film may be continuous.
  • the film may comprise or be a continuous sheet of material.
  • the sheet may be in the form of a wrapper, it may be gathered to form a gathered sheet or it may be shredded to form a shredded sheet.
  • the shredded sheet may comprise one or more strands or strips of aerosol-generating material.
  • the aerosol-generating film may be discontinuous.
  • the aerosol- generating film may comprise one or more discrete portions or regions of aerosol- generating material, such as dots, stripes or lines, which may be supported on a support. In such embodiments, the support may be planar or non-planar.
  • the aerosol-generating film may be formed by combining a binder, such as a gelling agent, with a solvent, such as water, an aerosol-former and one or more other components, such as one or more substances to be delivered, to form a slurry and then heating the slurry to volatilise at least some of the solvent to form the aerosol-generating film.
  • An aerosol provision device can receive an article comprising aerosol generating material for heating.
  • An “article” in this context is a component that includes or contains in use the aerosol generating material, which is heated to volatilise the aerosol generating material, and optionally other components in use.
  • a user may insert the article into or onto the aerosol provision device before it is heated to produce an aerosol, which the user subsequently inhales.
  • the article may be, for example, of a predetermined or specific size that is configured to be placed within or over a heater of the device which is sized to receive the article.
  • An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosol-generating material.
  • the aerosol generator is a heater configured to subject the aerosol-generating material to heat energy, so as to release one or more volatiles from the aerosol-generating material to form an aerosol.
  • the aerosol generator is configured to cause an aerosol to be generated from the aerosol-generating material without heating.
  • the aerosol generator may be configured to subject the aerosol-generating material to one or more of vibration, increased pressure, or electrostatic energy.
  • a consumable is an article comprising or consisting of aerosol-generating material, part or all of which is intended to be consumed during use by a user.
  • a consumable may comprise one or more other components, such as an aerosol generating material storage area, an aerosol-generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and/or an aerosol- modifying agent.
  • a consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol-generating material to generate aerosol in use.
  • the heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.
  • a susceptor is a heating material that is heatable by penetration with a varying magnetic field, such as an alternating magnetic field.
  • the susceptor may be an electrically-conductive material, so that penetration thereof with a varying magnetic field causes induction heating of the heating material.
  • the heating material may be magnetic P1312349282397513; 162324 material, so that penetration thereof with a varying magnetic field causes magnetic hysteresis heating of the heating material.
  • the susceptor may be both electrically- conductive and magnetic, so that the susceptor is heatable by both heating mechanisms.
  • Non-combustible aerosol provision systems may comprise a modular assembly including both a reusable aerosol provision device and a replaceable aerosol generating article.
  • the non-combustible aerosol provision device may comprise a power source and a controller (or control circuitry).
  • the power source may, for example, comprise an electric power source, such as a battery or rechargeable battery.
  • the non-combustible aerosol provision device may also comprise an aerosol generating component.
  • the aerosol generating article may comprise partially, or entirely, the aerosol generating component.
  • FIG 1 shows an aerosol provision system 10 comprising an aerosol provision device 100 and a charging unit 101.
  • the device is shown located within a cavity of a charging unit 101.
  • the aerosol provision device 100 is arranged to generate aerosol from an aerosol generating article (refer to Figure 3) which may be inserted, in use, into the aerosol provision device 100.
  • the article forms part of the aerosol provision system 10.
  • the aerosol provision device 100 is an elongate structure, extending along a longitudinal axis. Additionally, the aerosol provision device has a proximal end, which will be closest to the user (e.g.
  • the aerosol provision device 100 also accordingly defines a proximal direction, which is directed towards the user when in use. Further, the aerosol provision device 100 also likewise defines a distal direction, which is directed away from the user when in use.
  • proximal and distal as applied to features of the device 100 will be described by reference to the relative positioning of such features with respect to each other in a proximal-distal direction along a longitudinal axis.
  • the aerosol provision device 100 comprises an opening at the distal end, leading into a heating chamber.
  • the aerosol provision device 100 may be removably inserted into the charging unit 101 in order to be charged.
  • the charging unit 101 comprises a cavity (refer to Figure 2) for receiving the aerosol provision device 100.
  • the aerosol provision device P1312349282397513; 162324 100 may be inserted into the cavity via an opening.
  • the cavity may also comprise a longitudinal opening.
  • a portion of the aerosol provision device 100 may comprise a first side.
  • One or more user-operable control elements such as buttons 106 which can be used to operate the aerosol provision device 100 may be provided on the first side of the aerosol provision device 100.
  • the first side of the aerosol provision device 100 may be received in the longitudinal opening provided in the charging unit 101.
  • the cavity of the charging unit 101 may have a cross-sectional profile which only permits that the aerosol provision device 100 be inserted into the charging unit 101 in a single orientation.
  • the outer profile of the aerosol provision device 100 may comprise an arcuate portion and a linear portion.
  • the cross-sectional profile of the cavity provided in the charging unit 101 may also comprise a similar arcuate portion and a linear portion.
  • the linear portion of the cross- sectional profile of the cavity may correspond with the longitudinal opening.
  • the charging unit 101 includes a slidable lid 103. When the aerosol provision device 100 is inserted into the charging unit 101 in order to be recharged, the slidable lid 103 may be closed so as to cover the opening into the aerosol provision device 100.
  • the charging unit 101 may have an alternative lid configuration, such as a hinged or pivoted lid, or no lid may be provided.
  • the charging unit 101 may include a user interface such as display 108, which can be provided at any convenient location, such as in the position shown in Figure 1.
  • Figure 2 shows a cross sectional view of a portion of the aerosol provision device 100.
  • the aerosol provision device 100 comprises a main housing 200.
  • the main housing 200 defines a device body of the device 100.
  • the device 100 defines a heating chamber 201.
  • a receptacle 205 defines the heating chamber 201.
  • An opening 203 is provided to provide access to the heating chamber 201.
  • the receptacle 205 comprises a wall arrangement including a receptacle side wall 205a and a receptacle base 205b.
  • the base 205b is at the distal end of the receptacle 205.
  • a heating member 301 is provided in a portion of the main housing 200 and the heating member 301 extends or projects into the heating chamber 201.
  • the heating member 301 may comprise a base portion 301a which may be located in a recess provided in a portion of the body of the device 100.
  • the heating member 301 upstands in the heating chamber 201.
  • the heating member 301 upstands from the distal end.
  • the heating member 301 comprises an elongate heating member in the form of a pin.
  • the heating member 301 in other embodiments comprises other elongate configurations, such as a blade.
  • the heating member 301 may be inserted, in use, into a P1312349282397513; 162324 distal end of an aerosol generating article 50 (refer to Figure 3) which is received within the heating chamber 201 in order to internally heat the aerosol generating article.
  • the housing comprises housing wall 200a.
  • the housing wall 200a extends along the longitudinal axis of the aerosol provision device 100, surrounding the heating chamber 201.
  • the housing wall 200a may, at least in part, define a receiving chamber of the aerosol provision device 100, as the volume which is enclosed within the wall 200a.
  • a housing base 200b is at the distal end of the housing wall 200a.
  • the heating member 301 upstands from the housing base 200b.
  • the heating member 301 protrudes through the receptacle base 205b.
  • An aperture 206 is formed in the receptacle base 205b through which the heating member 301 protrudes.
  • the aerosol provision device 100 further comprises a removal mechanism 204 which may be removably retained to the main housing 200 of the aerosol provision device 100.
  • the removal mechanism 204 may be retained to the main housing 200 so that at least a portion of the removal mechanism 204 extends into the heating chamber 201.
  • the removal mechanism 204 may comprise a longitudinal portion such as a peripheral wall portion 207a, which in the present embodiment is tubular, and a base wall portion 207b.
  • the wall 207a may be a shape other than tubular, and may be any shape which encloses (e.g. encircles) and defines the heating chamber 201 there within.
  • the removal mechanism 204 in embodiments is omitted.
  • the housing wall 200a at least in part defines the receptacle 205.
  • the heating member 301 is mounted to the receptacle base and the heating member 301 upstands from the receptacle base
  • the removal mechanism 204 defines the heating chamber 201.
  • the removal mechanism 204 forms the receptacle 205.
  • other features of the device 100 define the heating chamber 201, for example the housing side wall 200a and housing base 200b.
  • the base portion 207b has the aperture 206 through which the heating member 301 may project.
  • the removal mechanism 204 is pushed into engagement with the main housing 200 in the distal direction, i.e. towards the distal end of the main housing 200, until the removal mechanism 204 is able to move no further in the distal direction.
  • the removal mechanism 204 is referred to as being “retained to” the main housing 200, this is when the removal mechanism 204 is engaged with the main housing 200, and can move no further in the distal direction.
  • the peripheral portion 207a and the base portion 207b may define and enclose an article chamber for receiving the aerosol generating article 50, as shown in Figure 3.
  • the article chamber comprises an inner surface, which is configured to contact the aerosol generating article, the inner surface comprising a longitudinally extending portion which is provided by the tubular portion 207a, and an end portion which is provided by the base portion 207b.
  • the article chamber and the heating chamber are the same. When the aerosol generating article 50 is received in the heating chamber, it may contact both the longitudinally extending portion of the inner surface, and the end portion of the inner surface.
  • the article chamber i.e.
  • the peripheral portion 207a and the base portion 207b) may be configured to receive at least part of the aerosol generating article 50 which is in the form of rod which is longitudinally extending and cylindrical, such that the longitudinal axis of the article is parallel to (and optionally in line with) the longitudinal axis of the aerosol provision device 100 when received in the article chamber.
  • the article chamber may also be referred to as a receiving portion.
  • the removal mechanism 204 is therefore configured to receive at least a portion of the aerosol generating article in use.
  • the removal mechanism 204 may comprise a first magnet or a magnetisable material 208.
  • the main housing 200 may comprise a second magnet or magnetisable material 209.
  • the removal mechanism 204 may be magnetically retained to the main housing 200 by the interaction of the first magnet or magnetisable material 208 and the second magnet or magnetisable material 209.
  • the removal mechanism 204 is fully detachable from the main housing 200.
  • the removal mechanism 204 may be retained to the main housing 200 by a magnetic force of attraction between the first magnet or magnetisable material 208 and the second magnet or magnetisable material 209.
  • the removal mechanism 204 may be detached from the main housing 200 by overcoming the magnetic force between the first magnet or magnetisable material 208 and the second magnet or magnetisable material 209.
  • the removal mechanism 204 is removably retained to the main housing 200 by other means.
  • the removal mechanism 204 may be configured to be removably retained to the main housing 200 by an interference fit with the main housing. P1312349282397513; 162324
  • the removal mechanism 204 may comprise an internal element (comprising the tubular portion 207a and a base portion 207b) and an outer cap portion 210, wherein when retained to the main housing 200 the outer cap portion 210 encapsulates (e.g.
  • FIG. 4 shows another aerosol generating system 40.
  • the system 40 comprises a one-piece aerosol generating device 400 for generating aerosol from an aerosol generating material, and the aerosol generating article 50 comprising the aerosol generating medium.
  • the device 400 can be used to heat the aerosol generating article 50 comprising the aerosol generating medium, to generate an aerosol or other inhalable medium which can be inhaled by a user of the device 400.
  • the device 400 comprises a housing 500 which surrounds and houses various components of the device 400.
  • the housing 500 is elongate.
  • the device 400 has an opening 504 in one end, through which the article 50 can be inserted for heating by the device 400.
  • the article 50 may be fully or partially inserted into the device 400 for heating by the device 400.
  • the device 400 may comprise a user-operable control element 506, such as a button or switch, which operates the device 400 when operated, e.g. pressed. For example, a user may activate the device 400 by pressing the switch 406.
  • the device 400 defines a longitudinal axis 509 along which an article 50 may extend when inserted into the device 400.
  • the opening 504 is aligned on the longitudinal axis 509.
  • Figure 5 shows a cross-sectional schematic view of the aerosol generating system 40. Features described with reference to Figure 5 in embodiments are applicable to embodiments described above.
  • the aerosol generating device 400 comprises a power source 410, a controller 420 and a heating chamber 401, in which the aerosol generating article 50 is removeable received.
  • the one-piece device of Figure 5 shows the power source 410 aligned along the longitudinal axis of the heating chamber 401.
  • the power source is aligned along a second longitudinal axis, parallel to the longitudinal axis of the heating chamber.
  • the heating member 301 comprises an elongate heating member in the form of a pin.
  • the heating member 301 in embodiments comprises other elongate configurations, such as a blade.
  • the heating member 301 is provided in the heating chamber.
  • the heating member 301 extends or projects into the heating chamber 401.
  • the heating member 301 may be inserted, in use, into a distal end of the aerosol generating article which is received within the heating chamber 401 in order to internally heat the aerosol generating article.
  • the aerosol provision devices 100, 400 comprise a heating arrangement 300.
  • the heating arrangement 300 comprises a heater.
  • the heating member 301 acts as the heater.
  • the heater comprises a heating element 350 (refer to Figure 6), such as a resistive heating coil, arranged to be actuated to heat the heating member.
  • the heating arrangement 300 is a resistive heating arrangement.
  • the heater is a resistive heating heater.
  • the heating element, such as a heating coil, as will be described below is a resistive heating element.
  • the heating assembly comprises a resistive heating generator including components to heat the heating element via a resistive heating process.
  • an electrical current is directly applied to a resistive heating element, and the resulting flow of current in the heating element, acting as a heating component, causes the heating element to be heated by Joule heating.
  • the resistive heating element comprises resistive material configured to generate heat when a suitable electrical current passes through it, and the heating arrangement comprises electrical contacts for supplying electrical current to the resistive material.
  • the heating element forms at least part of the resistive heating member itself.
  • the resistive heating element transfers heat to the heating member, for example by conduction.
  • the provision of a resistive heating arrangement allows for a compact arrangement. Resistive heating provides an efficient configuration.
  • Figure 6 shows the heating member 301 for use in an aerosol provision device as described above.
  • the heating member 301 acts as or forms at least part of a heater.
  • the heating arrangement 300 comprises the heating member 301.
  • the heating member 301 comprises an elongate housing 302 and the heating element 350.
  • the elongate housing 302 is an elongate member defining a longitudinal axis.
  • the housing 302 is formed from a thermally conductive material, such as aluminum. Other suitable materials, such as stainless steel may be used...
  • the elongate P1312349282397513; 162324 housing may comprise a coating on its outer surface.
  • the elongate housing 302 is configured to transfer heat from the heating element 350 to the heating zone 201a.
  • the elongate housing 302 has a base end 303 and a free end 304.
  • the base end 304 mounts to the device body.
  • a mount 305 at the base end 303 mounts the heating member 301. It will be understood that different mounting arrangements may be used, for example a fixing, moulding, and bonding including adhering.
  • the mount 305 may be a separate component or may be integrally formed with the elongate housing 302.
  • the elongate housing 302 comprises a housing body 306.
  • the housing body 306 is tubular.
  • the housing body 306 comprises a bore 307.
  • the bore 307 defines an inner void 308 of the heating member 301.
  • the inner void 308 extends longitudinally.
  • An inner surface 309 is defined on an inner side of the elongate housing 302.
  • An open end 310 to the inner void 308 is provided at the base end 303.
  • the free end 304 of the elongate housing 302 extends towards the proximal end of the heating chamber.
  • the free end 304 of the heating member 301 is closed.
  • the inner void 308 does not extend through the free end 304.
  • a tip 311 is provided at the free end 304.
  • the tip 311 extends to an apex 312. Other shapes and configurations of the tip 311 may be provided, for example the tip 311 may define a planar surface.
  • the heating element 350 extends in the heating member 301.
  • the heating element 350 extends in the elongate housing 302 in the longitudinal direction.
  • the heating element 350 is received in the inner void 308.
  • the heating element 350 extends between the base end 303 and the free end 304.
  • the heating element extends partially along the length of the inner void 308. In embodiments the heating element 350 extends to or beyond the open end 310.
  • the heating element 350 in embodiments comprises a heating coil 351.
  • the heating coil 351 comprises a resistive member defining the heating coil 351. In other embodiments, the heating element 350 is not a heating coil and has a different shape.
  • An element 313 is provided in the inner void 308. The element 313 is configured to position and retain the heating coil 351 in the elongate housing 302.
  • the element 313 may be located at least partially between the heating coil 351 and the inner surface 309 of the elongate housing 302 to space the heating coil 351 apart from the inner surface 309 of the elongate housing 302 thereby preventing direct contact between the heating coil 351 and the elongate housing 302.
  • the element 313 may also provide electrical insulation between the heating element 350 and the elongate housing 302 to prevent electrical current from flowing between the heating element 350 and the elongate housing 302.
  • the element 313 P1312349282397513; 162324 achieves this by being formed from an electrically insulating material and by being located at least partially between the heating element 350 and the elongate housing 302 to prevent the heating element 350 and the elongate housing 302 from being in direct contact with each other.
  • the element 313 may be formed from any suitable electrically insulating material, for example rubber or plastic or ceramic.
  • the element 313 may be thermally conductive to allow effective heat transfer from the heating element 350 to the elongate housing 302 to allow the elongate housing 302 to effectively and efficiently heat the article comprising aerosol generating material.
  • the element 313 is shaped to fit between the elongate housing 302 and the heating coil 351.
  • the element 313 is shaped to complement the shape of the inner void 308 of the elongate housing 302 so that the element 313 fits snugly or tightly in the inner void 308.
  • the element 313 in this embodiment has a cylindrical shape to complement the cylindrical shape of the inner surface 309 of the elongate housing 302. It will be appreciated that in other embodiments other shapes of the element 313 may be provided depending on the shape of the inner surface 309 of the elongate housing 302.
  • a radially outer surface 315 of the element 313 complements and is in contact with the inner surface 309 of the elongate housing 302.
  • a radially inner surface 317 of the element 313 defines a central void 319 to receive the heating coil 351.
  • the radially inner surface 317 of the element 313 is shaped to match or complement a radially outer surface 321 of the heating coil 351 so that the heating coil 351 fits snugly within the central void 319 of the element 313.
  • the radially inner surface 317 of the element 313 is cylindrical to match the outer surface of the helical heating coil 351, which has a cylindrical envelope.
  • the radially outer surface 321 of the heating coil 351 is in contact with the radially inner surface 317 of the element 313.
  • the element 313 shown in Figure 6 provides simple and robust means for reliably retaining the heating coil 351 in a position such that a central longitudinal axis of the heating coil and a longitudinal axis extending along the center of the inner void 308 are substantially aligned. This helps to provide even heating along the length of the heating member 301. A more even, consistent heating along the length of the heating member 301 will result in a more consistent heating of the aerosol generating material in the aerosol generating article, providing an improved sensory experience for the consumer.
  • the element 313 may extend along the whole length of the inner void 308. This helps to provide even heating along the whole length of the inner void 308.
  • the element 313 extends along only a portion of the full P1312349282397513; 162324 length of the inner void 308, for example a central portion, an upper portion or a lower portion.
  • the element 313 acts to retain and support the heating element 350 in the inner void 308 of the elongate housing 302 so that the element 313 is fixed in place in the elongate housing 302.
  • friction between the radially outer surface 315 of the element 313 and the inner surface 309 of the elongate housing 302 is sufficient to prevent the element 313 from moving relative to the elongate housing 302.
  • the heating coil 351 does not move axially or rotate within the element 313 and the heating element 313 does not move axially or rotate within the inner void 308 of the elongate housing 302.
  • the element 313 may be formed from an elastomeric material. This allows the element 313 to be compressed between the heating coil 351 and the elongate housing 302 to more securely hold the heating coil 351.
  • the compression of the element 313 will cause the element 313 to exert a force radially onto the inner surface 309 of the elongate housing 302, thereby increasing the coefficient of friction between the element 313 and the elongate housing 302 and more securely holding the element 313 in place.
  • This may also allow the heating coil 351 to compress the radially inner surface 317 of the element 313 to also increase the coefficient of friction between the heating coil 351 and the element 313.
  • the element 313 is formed from an inelastic material.
  • the element 313 has been formed previously to being inserted into the inner void 308.
  • the preformed element 313 can provide the dual purpose of providing electrical insulation between the heating coil 351 and the elongate housing 302 and supporting the heating coil 351 in the inner void 308.
  • a pre-formed element 313, such as that shown in Figure 6, also helps to provide consistent, reliable and robust means for retaining the heating element 351 in an optimum central location within the inner void 308.
  • the heating member 301 may also be easier to assemble using a preformed element 313.
  • the preformed element 313 may also allow the components of the heating member 301 P1312349282397513; 162324 to be disassembled, for example for maintenance or cleaning or to replace a part which has expired, or for recycling parts.
  • the heating coil 351 may comprise an electrically insulative coating, such as a ceramic, to electrically insulate the heating coil 351 from the elongate housing 302.
  • the electrically insulative coating in embodiments is thermally conductive to provide for heat transfer from the heating element 350 to the elongate housing 302.
  • the element 313 can be formed from a material which is not electrically insulating.
  • the element 313 is an element which provides support to the heating coil 351.
  • the heating coil 351 is a resistive heating coil.
  • the heating coil 351 is a helical coil.
  • the heating coil 351 has a rectangular cross-sectional profile. It will be understood that other coil configurations are possible.
  • the heating coil 351 has a circular cross-sectional profile.
  • the heating arrangement 300 comprises two or more heating coils.
  • the heating arrangement 300 comprises electrical connection paths.
  • the electrical connection paths extend from each end of the heating element 350.
  • a base electrical connection path 352 extends from the distal end of the heating element 350.
  • a return electrical connection path 353 extends from the free end of the heating element 350.
  • the return electrical connection path overlaps the longitudinal extent of the heating element 350.
  • the electrical connection paths are integrally formed with the heating element, for example as a single wire.
  • connectors connect the electrical connection paths with the heating element 350.
  • the heating coil 351 is formed from a resistive material, such as a nickel/chrome alloy such as nichrome 80/20 (80% Nickel, 20% Chromium), an iron/chrome/aluminium alloy, or a copper/nickel alloy.
  • Figure 7 illustrates another embodiment of a heating element 550.
  • the configuration of the heating element 550 in Figure 7 is generally the same as that described above with reference to Figure 6, and so a detailed description will be omitted.
  • the configuration of the element 513 differs to that shown in Figure 6 in that instead of having a cylindrical shape, the element 513 is helical shaped.
  • the heating element 551 may be a coil heater 551 which may be wound onto the element 513 so that a winding surface of the element 513 supports the windings of the coil heater 551 such that the coil heater 551 is held securely in a central location within the inner void 508.
  • the heating element 551 and/or the inner surface 559 of the housing 502 may be coated in an electrically insulating material, such that the heating element 551 are in direct contact with each other.
  • This embodiment may help to provide more P1312349282397513; 162324 effective transfer of heat from the heating element 551 to the housing 559, whilst still providing robust means for holding the heating element 551 in a constant central location within the inner void 508.
  • elements with shapes and configurations other than those shown in Figures 6 or 7, but which are still preformed, may be provided.
  • the inner void of the elongate housing may be at least partially filled with a filler material, the filler material being located inside the heater element.
  • the heating element is a coil
  • the filler material may be located inside the coil windings.
  • the elongate housing 302 and the heating element 351 are manufactured using any suitable method.
  • the element 313 is also manufactured into its final shape using any suitable method, for example using a mould or additive manufacturing or cutting material to form the final shape or forming separate parts and attaching the parts to each other to form the final shape.
  • the element 313 is formed in multiple parts before being assembled together, for example multiple rings or formed in two longitudinal halves which are assembled together.
  • upper and lower parts may be formed and then assembled together.
  • three or more parts are formed and assembled together to form the element.
  • An advantage to forming the element 313 in parts is that the element 313 can be more easily assembled around the heating element 351.
  • the element 313 is manufactured prior to being assembled within the inner void 308, so that it is a preformed element. When the element is formed of multiple parts, it will be understood that each of these parts is a pre-formed element.
  • the heating element 351 may be secured to or assembled inside the element 313 before the element 313 is assembled inside the inner void 308, or vice versa.
  • Adhesive if using, is applied between the relevant surfaces of the heating element 351, element 313 and inner surface 309 of the elongate housing 302 before they are assembled together.
  • the method may include press fitting the element 313 into the bore 307 and/or may include press fitting the heating element 351 into the element 313.
  • a filler material may be provided in the elongate housing, located centrally within the heating element.
  • the heating arrangement is a resistive heating arrangement.
  • other types of heating arrangement are used, such as inductive heating.
  • the configuration of the device is generally as described above and so a detailed description will be omitted.
  • An inductive heating arrangement comprises various components to heat the aerosol generating material of the article via an inductive heating process.
  • Induction heating is a process of heating an electrically conducting heating member (such as a susceptor) by electromagnetic induction.
  • An induction heating arrangement may comprise an inductive element, for example, one or more inductor coils, and a device for passing a varying electric current, such as an alternating electric current, through the inductive element.
  • the varying electric current in the inductive element produces a varying magnetic field.
  • the varying magnetic field penetrates a susceptor (heating member) suitably positioned with respect to the inductive element.
  • heat is generated inside the susceptor, allowing for rapid heating. Further, there need not be any physical contact between the inductive element and the susceptor, allowing for enhanced freedom in construction and application.
  • the heating member of the aerosol provision system is a part of the aerosol generating article, rather than being a part of the aerosol provision device.
  • the heating element may be a resistive heating element, for example in the form of the resistive coil described above, which is provided as part of the aerosol generating article. Electrical connections may enable electric current to flow through the resistive heating element.

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  • Pipe Accessories (AREA)
  • Resistance Heating (AREA)

Abstract

L'invention concerne un organe chauffant pour un dispositif de fourniture d'aérosol, conçu pour chauffer au moins une partie d'un article comprenant un matériau de génération d'aérosol afin de fournir un aérosol, ledit organe comprenant un boîtier allongé, un élément chauffant s'étendant dans le boîtier allongé, et au moins un élément préformé conçu pour positionner et maintenir l'élément chauffant dans le boîtier allongé.
PCT/EP2023/080396 2022-10-31 2023-10-31 Organe chauffant pour un dispositif de fourniture d'aérosol WO2024094716A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB2216100.4A GB202216100D0 (en) 2022-10-31 2022-10-31 Heating member for an aerosol provision device
GB2216100.4 2022-10-31

Publications (1)

Publication Number Publication Date
WO2024094716A1 true WO2024094716A1 (fr) 2024-05-10

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PCT/EP2023/080396 WO2024094716A1 (fr) 2022-10-31 2023-10-31 Organe chauffant pour un dispositif de fourniture d'aérosol

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GB (1) GB202216100D0 (fr)
TW (1) TW202425836A (fr)
WO (1) WO2024094716A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207040894U (zh) * 2017-06-28 2018-02-27 深圳市合元科技有限公司 分段加热式电子烟具
WO2021223716A1 (fr) * 2020-05-06 2021-11-11 深圳市合元科技有限公司 Dispositif de chauffage et dispositif de génération d'aérosol le comprenant
WO2022011969A1 (fr) * 2020-07-17 2022-01-20 惠州市沛格斯科技有限公司 Module de chauffage et dispositif de génération de vapeur
WO2022062361A1 (fr) * 2020-09-23 2022-03-31 深圳麦克韦尔科技有限公司 Ensemble dispositif de chauffage et dispositif de formation d'aérosol
EP4023084A1 (fr) * 2020-05-19 2022-07-06 Shenzhen Huachengda Precision Industry Co., Ltd. Dispositif de chauffage et son procédé de fabrication, et cigarette électronique à chauffage sans combustion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207040894U (zh) * 2017-06-28 2018-02-27 深圳市合元科技有限公司 分段加热式电子烟具
WO2021223716A1 (fr) * 2020-05-06 2021-11-11 深圳市合元科技有限公司 Dispositif de chauffage et dispositif de génération d'aérosol le comprenant
EP4023084A1 (fr) * 2020-05-19 2022-07-06 Shenzhen Huachengda Precision Industry Co., Ltd. Dispositif de chauffage et son procédé de fabrication, et cigarette électronique à chauffage sans combustion
WO2022011969A1 (fr) * 2020-07-17 2022-01-20 惠州市沛格斯科技有限公司 Module de chauffage et dispositif de génération de vapeur
WO2022062361A1 (fr) * 2020-09-23 2022-03-31 深圳麦克韦尔科技有限公司 Ensemble dispositif de chauffage et dispositif de formation d'aérosol

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