Aerosol Delivery Device

Abstract

An aerosol delivery device (101) is described. The device generates an aerosol from an aerosol-generating material (200). The device has a receptacle (212) defining a heating region in which at least a portion of an article (110) comprising the aerosol-generating material is received. A heating element (220) projects into the heating region. The heating element comprises an air passage having an air outlet (252) in fluid communication with the heating region, and an airflow regulation assembly (400) arranged to vary airflow through the air outlet.

Description

[Technical Field]

[0001] The present invention relates to an aerosol delivery device for generating an aerosol from an aerosol-forming material.The present invention further relates to an aerosol delivery system comprising the aerosol delivery device and an article comprising the aerosol-forming material. [Background technology]

[0002] Smoking articles, such as cigarettes and cigars, burn tobacco during use to produce tobacco smoke. Attempts to provide alternatives to these tobacco-burning articles have been made by creating products that release compounds without combustion. An example of such a product is a heating device that releases compounds by heating a material rather than burning it. The material may be, for example, tobacco or other non-tobacco products that may or may not contain nicotine. Summary of the Invention

[0003] According to an aspect, an aerosol delivery device for generating an aerosol from an aerosol-generating material is provided, the aerosol delivery device comprising: a receptacle defining a heating region configured to receive at least a portion of an article comprising the aerosol-generating material; a heating element projecting into the heating region and configured to heat the heating region; an air passage having an air outlet in fluid communication with the heating region; and an air flow adjustment assembly arranged to vary air flow through the air outlet.

[0004] The airflow adjustment assembly may be configured to vary the available airflow area through the air outlet.

[0005] The air outlet may comprise an air opening, and the air flow regulation assembly may be configured to selectively at least restrict air flow through the air opening.

[0006] The air opening may be a first air opening and the air flow adjustment assembly may include a second air opening.

[0007] The airflow regulation assembly may be configured to selectively at least restrict airflow through the second air opening.

[0008] The airflow regulation assembly may be configured to alternately restrict airflow through the first air opening and airflow through the second air opening.

[0009] The air outlet may comprise an array of air openings. As used herein, the term "array of air openings" is intended to mean two or more air openings.

[0010] The airflow regulation assembly may comprise a barrier operable to selectively restrict airflow through the at least one air opening. The barrier may be an internal barrier within the heating element.

[0011] The device may include an air inlet to the heating element, with the barrier between the air inlet and the air outlet.

[0012] The airflow adjustment assembly may include a hole in the heating element, and a barrier is movable in the hole to fluidly separate the hole into an air supply side in fluid communication with the air inlet in the heating element and a closed side in the heating element that is fluidly separated from the air inlet.

[0013] The holes may extend longitudinally along the heating element.

[0014] The heating element may protrude from the receptacle at a distal end and may have a free end at a proximal end.

[0015] The air supply may be at the distal end, and the air inlet may communicate with the aperture at the distal end.

[0016] The air supply side may be at the proximal end.

[0017] The device may include an air passage configured to supply air along the heating element to an air supply side at the proximal end.

[0018] The airflow assembly may include a drive member arranged to move the barrier in the aperture, with an air passageway extending therealong.

[0019] The air passage may extend through the barrier. The air passage may extend from a distal end of the heating element.

[0020] The barrier may comprise a piston having a piston head slidable in the bore.

[0021] The piston may include a piston head configured to selectively block one or more outlet openings.

[0022] The piston may include a piston head configured to vary the flow area through the air outlet.

[0023] The barrier may be an external barrier around the heating element.

[0024] The barrier may comprise a collar around the heating element.

[0025] The collar may be positioned to fluidly separate the air openings into an air supply side, where at least one of the air openings is in fluid communication with the heating region, and a closed side, where at least one of the air openings is fluidly isolated from the heating region.

[0026] The heating element may be slidable in the collar.

[0027] The receptacle may include a collar. The receptacle may include a base. The base may include a collar.

[0028] The airflow adjustment assembly may include an actuator for moving one of the barrier and the heating element relative to one another.

[0029] The actuator may be arranged to move the barrier relative to the heating element.

[0030] The actuator may be arranged to move the heating element relative to the barrier.

[0031] The actuator may be arranged to adjust the extent to which the heating element protrudes into the heating region.

[0032] The heating element may be hollow. The heating element may be tubular.

[0033] The heating element may comprise a heating member.

[0034] The heating element may include a peripheral wall. The heating element may include a closed end.

[0035] The array of air openings may be distributed in an axial arrangement along the heating element.

[0036] At least a first air opening of the array of air openings may have a different flow area than at least a second air opening of the array of air openings.

[0037] The flow area of ​​the array of air openings may increase in the longitudinal direction of the heating element.

[0038] The flow area of ​​the array of air openings may increase from the distal end to the proximal end.

[0039] The flow area of ​​the array of air openings may increase from the proximal end to the distal end.

[0040] The concentration of air openings in the array of air openings may increase from the distal end to the proximal end.

[0041] The concentration of air openings in the array of air openings may decrease from the distal end to the proximal end.

[0042] The device may comprise a first wall region of the heating element that comprises an array of air openings and a second wall region of the heating element that does not have an array of air openings.

[0043] The first region may be a band. The second region may be a band.

[0044] The air outlet may comprise a mesh. The air outlet may comprise an array of perforations. The or each air opening may be elongate.

[0045] The air openings may extend longitudinally of the heating element.

[0046] The device may include a seal arranged to seal between the article and at least one of the receptacle and the heating element.

[0047] The seal may extend around the heating element.

[0048] The seal may comprise at least one of a lip seal, an O-ring, a face seal, a chamfer, a collar, a shoulder, and a protrusion.

[0049] The heating element may comprise a heating material that is heatable by the penetration of a varying magnetic field.

[0050] The heating material may define air passages.

[0051] The receptacle may not contain a heating material that is heatable by the penetration of a fluctuating magnetic field.

[0052] The device may include a magnetic field generator including an inductor coil configured to generate a varying magnetic field.

[0053] The inductor coil may be a spiral coil. The inductor coil may be a flat coil.

[0054] The inductor coil may at least partially surround the heating region.

[0055] The inductor coil may extend at least partially through the heating element.

[0056] The heating element may comprise a portion of a resistive heating arrangement.

[0057] A heating element projecting into the heating region may be configured to be heated to a temperature sufficient to generate an aerosol from the aerosol-forming material.

[0058] According to an aspect, an aerosol delivery device for generating an aerosol from an aerosol-generating material is provided, the aerosol delivery device comprising: a receptacle defining a heating region configured to receive at least a portion of an article comprising the aerosol-generating material; and a heating element projecting into the heating region and configured to heat the heating region, wherein an air passage is defined through the heating element.

[0059] A heating element projecting into the heating region may be configured to be heated to a temperature sufficient to generate an aerosol from the aerosol-forming material.

[0060] An air passage may provide communication between the exterior of the heating zone and the heating zone.

[0061] According to an aspect, there is provided an aerosol delivery system comprising an aerosol delivery device as described above and an article comprising an aerosol-generating material.

[0062] According to an aspect, an aerosol delivery system is provided that includes: an article comprising an aerosol-generating material; and an aerosol delivery device for heating the aerosol-generating material, the aerosol delivery device including a receptacle defining a heating region configured to receive at least a portion of the article comprising the aerosol-generating material; and a heating element protruding into the heating region and configured to heat the heating region, wherein an air path is defined through the heating element.

[0063] According to an aspect, an aerosol delivery system is provided, comprising: an article comprising an aerosol-generating material; and an aerosol delivery device for heating the aerosol-generating material, the aerosol delivery device comprising: a receptacle defining a heating region configured to receive at least a portion of the article comprising the aerosol-generating material; and a heating element projecting into the heating region and configured to heat the heating region, the heating element comprising: an air passage having an air outlet in fluid communication with the heating region; and an airflow adjustment assembly arranged to vary airflow through the air outlet.

[0064] The article may include a pre-formed hole configured to receive the heating element.

[0065] The item may be a consumable item.

[0066] The heating element may be removable from the heating zone. The heating element may be replaceable.

[0067] The heating element may be raised from a base. The heating element may have a sharp edge or point at its free end. The heating element may be a pin or blade. The heating element may be configured to penetrate an item received by the heating zone.

[0068] The heating element and the receptacle may be coaxial.

[0069] Apparatus of this aspect may include one, more, or all of the features described above, as appropriate.

[0070] The aerosol generating device may be a non-combustible aerosol generating device.

[0071] The device may be a tobacco heating device, also known as a non-combustion heating device.

[0072] The aerosol-forming material may be a non-liquid aerosol-forming material.

[0073] The article may be sized to be at least partially received in the heating zone.

[0074] According to an aspect, an aerosol generating device for generating an aerosol from an aerosol-generating material is provided, the aerosol generating device comprising: a receptacle defining a heating region configured to receive at least a portion of an article comprising the aerosol-generating material; and a heating element arranged to heat the heating region.

[0075] According to an aspect, an aerosol generating system is provided, comprising: an article comprising an aerosol-generating material; an aerosol generating device for heating the aerosol-generating material, the aerosol generating device comprising a heating region configured to receive at least a portion of the article; and a heating element.

[0076] According to an aspect, an aerosol generating device for generating an aerosol from an aerosol-generating material is provided, the aerosol generating device comprising: a heating element configured to be received on at least a portion of an article comprising the aerosol-generating material; a base from which the heating element protrudes; an air passage having an air outlet in fluid communication with an outer surface of the heating element; and an air flow adjustment assembly arranged to vary the air flow through the air outlet.

[0077] The device may comprise a heating region around the heating element configured to at least partially receive the article comprising the aerosol-forming material.

[0078] The air outlet may be in fluid communication with the heating region.

[0079] The device may include a housing, the housing defining a base.

[0080] At least a portion of the heating element may be exposed.

[0081] The base may include a raised rim extending around and spaced from the base end of the heating element.

[0082] The heating element may be configured to be heated to a temperature sufficient to generate an aerosol from the aerosol-forming material.

[0083] The airflow adjustment assembly may be configured to vary the available airflow area through the air outlet.

[0084] The air outlet may comprise an air opening, and the air flow regulation assembly may be configured to selectively at least restrict air flow through the air opening.

[0085] The air opening may be a first air opening and the air flow adjustment assembly may include a second air opening.

[0086] The airflow regulation assembly may be configured to selectively at least restrict airflow through the second air opening.

[0087] The airflow regulation assembly may be configured to alternately restrict airflow through the first air opening and airflow through the second air opening.

[0088] The air outlet may comprise an array of air openings. As used herein, the term "array of air openings" is intended to mean two or more air openings.

[0089] The airflow regulation assembly may comprise a barrier operable to selectively restrict airflow through the at least one air opening. The barrier may be an internal barrier within the heating element.

[0090] The device may include an air inlet to the heating element, with the barrier between the air inlet and the air outlet.

[0091] The airflow adjustment assembly may include a hole in the heating element, and a barrier is movable in the hole to fluidly separate the hole into an air supply side in fluid communication with the air inlet in the heating element and a closed side in the heating element that is fluidly separated from the air inlet.

[0092] The holes may extend longitudinally along the heating element.

[0093] The heating element may protrude from the base at the distal end and may have a free end at the proximal end.

[0094] The air supply may be at the distal end, and the air inlet may communicate with the aperture at the distal end.

[0095] The air supply side may be at the proximal end.

[0096] The device may include an air passage configured to supply air along the heating element to an air supply side at the proximal end.

[0097] The airflow assembly may include a drive member arranged to move the barrier in the aperture, with an air passageway extending therealong.

[0098] The air passage may extend through the barrier. The air passage may extend from a distal end of the heating element.

[0099] The barrier may comprise a piston having a piston head slidable in the bore.

[0100] The piston may include a piston head configured to selectively block one or more outlet openings.

[0101] The piston may include a piston head configured to vary the flow area through the air outlet.

[0102] The barrier may be an external barrier around the heating element.

[0103] The barrier may comprise a collar around the heating element.

[0104] The collar may be positioned to fluidly separate the air openings into an air supply side, where at least one of the air openings is in fluid communication with the heating region, and a closed side, where at least one of the air openings is fluidly isolated from the heating region.

[0105] The heating element may be slidable in the collar.

[0106] The base may include a collar.

[0107] The airflow adjustment assembly may include an actuator for moving one of the barrier and the heating element relative to one another.

[0108] The actuator may be arranged to move the heating element relative to the barrier.

[0109] The actuator may be arranged to adjust the extent to which the heating element protrudes into the heating region.

[0110] The heating element may be hollow. The heating element may be tubular.

[0111] The heating element may comprise a heating member.

[0112] The heating element may include a peripheral wall. The heating element may include a closed end.

[0113] The array of air openings may be distributed axially along the heating element.The array of air openings may be distributed in an axial configuration along the heating element.

[0114] At least a first air opening of the array of air openings may have a different flow area than at least a second air opening of the array of air openings.

[0115] The flow area of ​​the array of openings may increase along the length of the heating element.

[0116] The flow area of ​​the array of air openings may increase from the distal end to the proximal end.

[0117] The flow area of ​​the array of air openings may increase from the proximal end to the distal end.

[0118] The concentration of air openings in the array of air openings may decrease from the distal end to the proximal end.

[0119] The device may comprise a first wall region of the heating element that comprises an array of air openings and a second wall region of the heating element that does not have an array of air openings.

[0120] The first region may be a band. The second region may be a band.

[0121] The air outlet may comprise a mesh. The air outlet may comprise an array of perforations. The or each air opening may be elongated.

[0122] The air openings may extend longitudinally of the heating element.

[0123] The device may include a seal arranged to seal between the article and at least one of the base and the heating element.

[0124] The seal may extend around the heating element.

[0125] The seal may comprise at least one of a lip seal, an O-ring, a face seal, a chamfer, a collar, a shoulder, and a protrusion.

[0126] The heating element may comprise a heating material that is heatable by the penetration of a varying magnetic field.

[0127] The heating material may define air passages.

[0128] The heating region may not include a heating material that is heatable by the penetration of a varying magnetic field.

[0129] The device may include a magnetic field generator including an inductor coil configured to generate a varying magnetic field.

[0130] The inductor coil may be a spiral coil. The inductor coil may be a flat coil.

[0131] The inductor coil may at least partially surround the heating region.

[0132] The inductor coil may extend at least partially through the heating element.

[0133] The heating element may comprise a portion of a resistive heating arrangement.

[0134] A heating element projecting into the heating region may be configured to be heated to a temperature sufficient to generate an aerosol from the aerosol-forming material.

[0135] According to an aspect, an aerosol generation system is provided, comprising: an article comprising an aerosol-generating material; and an aerosol delivery device for generating an aerosol from the aerosol-generating material, the aerosol delivery device comprising: a heating element configured to be received on at least a portion of the article comprising the aerosol-generating material; and a base from which the heating element protrudes, the heating element comprising: an air passage having an air outlet in fluid communication with an outer surface of the heating element; and an air flow adjustment assembly arranged to vary air flow through the air outlet.

[0136] The device may comprise a heating region around the heating element configured to at least partially receive the article comprising the aerosol-forming material.

[0137] The article may include a pre-formed hole configured to receive the heating element.

[0138] The item may be a consumable item.

[0139] The article may include an engagement feature configured to engage with the heating element.

[0140] The heating element may be removable from the device. The heating element may be replaceable.

[0141] The heating element may be upstanding from a base. The heating element may have a sharp edge or point at its free end. The heating element may be a pin or blade. The heating element may be configured to penetrate an item received by the heating zone.

[0142] Apparatus of this aspect may include one, more, or all of the features described above, as appropriate.

[0143] The aerosol generating device may be a non-combustible aerosol generating device.

[0144] The device may be a tobacco heating device, also known as a non-combustion heating device.

[0145] The aerosol-forming material may be a non-liquid aerosol-forming material.

[0146] According to an aspect, there is provided an aerosol generation device for generating an aerosol from an aerosol-generating material, the aerosol generation device comprising: a housing; and an exposed heating arrangement protruding from the housing configured to be received in the aerosol product article and to heat the aerosol product article. The heating arrangement may comprise a heating element protruding from the housing configured to be received in the aerosol product article.

[0147] The housing may include a base from which the heating element projects.

[0148] The heating element may include an air passage having an air outlet in fluid communication with the heating region.

[0149] The heating element may include an airflow adjustment assembly arranged to vary the airflow through the air outlet.

[0150] The airflow adjustment assembly is configured to vary the available airflow area through the air outlet.

[0151] The air outlet may comprise an air opening, and the air flow regulation assembly is configured to selectively at least restrict air flow through the air opening.

[0152] The heating region may extend around the exposed heating element and be configured to at least partially receive an article comprising the aerosol-forming material.

[0153] According to an aspect, there is provided an aerosol generating system comprising the aerosol delivery device described above and an article comprising an aerosol-generating material.

[0154] The devices of these aspects may include one, more or all of the features described above, as appropriate.

[0155] Embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which: [Brief explanation of the drawings]

[0156] [Figure 1] FIG. 1 is a front perspective view of an aerosol generation system having an aerosol generation device and an article inserted into the device. [Figure 2] FIG. 2 is a schematic diagram of the aerosol generation system of FIG. 1. [Figure 3] FIG. 2 is a schematic diagram of a portion of the aerosol generating system of FIG. 1 with an article partially withdrawn from the device. [Figure 4] FIG. 2 is a schematic diagram of a portion of another embodiment of the aerosol generating system of FIG. 1 with an article partially withdrawn from the device. [Figure 5] 2 is a schematic cross-sectional view of a heating element of the aerosol delivery system of FIG. 1. [Figure 6] 2 is another schematic cross-sectional view of the heating element of the aerosol delivery system of FIG. 1. [Figure 7] 2 is another schematic cross-sectional view of the heating element of the aerosol delivery system of FIG. 1. [Figure 8] 2 is another schematic cross-sectional view of the heating element of the aerosol delivery system of FIG. 1. [Figure 9] 2 is another schematic cross-sectional view of the heating element of the aerosol delivery system of FIG. 1. [Figure 10] 2 is another schematic cross-sectional view of the heating element of the aerosol delivery system of FIG. 1. [Figure 11] 2 is another schematic cross-sectional view of the heating element of the aerosol delivery system of FIG. 1. [Figure 12] FIG. 1 illustrates a device having an air conditioning assembly. [Figure 13]14A-14C show the device shown in FIG. 13 with the air conditioning assembly in a different position. [Figure 14] FIG. 2 is a cross-sectional view of a heating element and air conditioning assembly. [Figure 15] 15A-15C are cross-sectional views of the heating element and air conditioning assembly of FIG. 14 with the air conditioning assembly in different positions. [Figure 16] FIG. 2 is a cross-sectional view of a heating element and air conditioning assembly. [Figure 17] 17A-17C are cross-sectional views of the heating element and air conditioning assembly of FIG. 16 with the air conditioning assembly in different positions. [Figure 18] 1 is a schematic diagram of an aerosol generation system having an aerosol generation device and an article for use with the device. [Figure 19a] FIG. 1 is a schematic diagram of another aerosol generating system. [Figure 19b] FIG. 1 is a schematic diagram of another aerosol generating system. DETAILED DESCRIPTION OF THE INVENTION

[0157] As used herein, the term "aerosol-forming material" refers to a material capable of generating an aerosol when, for example, heated, irradiated, or otherwise energized. Aerosol-forming materials may be, for example, in the form of a solid, liquid, or gel, which may or may not contain active substances and / or flavorings. Aerosol-forming materials may include any plant-based material, such as tobacco-containing materials, and may include, for example, one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. Aerosol-forming materials may also include other non-tobacco products, which may or may not contain nicotine, depending on the product. Aerosol-forming materials may be, for example, in the form of a solid, liquid, gel, wax, etc. Aerosol-forming materials may also be, for example, a combination or blend of materials. Aerosol-forming materials may also be referred to as "smoking materials."

[0158] The aerosol-forming material may comprise a binder and an aerosol former. Optionally, an active substance and / or a filler may also be present. Optionally, a solvent, such as water, may also be present, and one or more other components of the aerosol-forming material may or may not be soluble in the solvent. In some embodiments, the aerosol-forming material is substantially free of plant material. In some embodiments, the aerosol-forming material is substantially tobacco-free.

[0159] The aerosol-generating material may comprise or be an "amorphous solid." An amorphous solid may be a "monolithic solid." In some embodiments, the amorphous solid may be a dried gel. An amorphous solid is a solid material that can hold some fluid, such as a liquid, within it. In some embodiments, the aerosol-generating material may comprise, for example, about 50%, 60%, or 70% amorphous solid by weight, up to about 90%, 95%, or 100% amorphous solid by weight.

[0160] The aerosol-generating material may comprise an aerosol-generating film. The aerosol-generating film may comprise or be a sheet, which may optionally be shredded to form shredded sheets. The aerosol-generating sheet or shredded sheets may be substantially tobacco-free.

[0161] Devices are known that heat aerosol-generating material to volatilize at least one component of the aerosol-generating material to form an inhalable aerosol, typically without burning or combusting the aerosol-generating material. Such devices may be described as "aerosol-generating devices," "aerosol delivery devices," "non-combustion heating devices," "tobacco heating product devices," "tobacco heating devices," or the like. Similarly, there are so-called e-cigarette devices that vaporize aerosol-generating material, typically in liquid form, which may or may not contain nicotine. The aerosol-generating material may be in the form of a rod, cartridge, cassette, or the like that can be inserted into the device, or may be provided as part of a rod, cartridge, cassette, or the like that can be inserted into the device. A heater for heating and volatilizing the aerosol-generating material may be provided as a "permanent" part of the device.

[0162] The aerosol-generating device can receive an article comprising an aerosol-generating material for heating. An "article" in this context is a component that includes or contains the aerosol-generating material during use, and optionally other components during use, that is heated to volatilize the aerosol-generating material. A user inserts the article into the aerosol delivery device before the article is heated to produce an aerosol, which the user can then inhale. The article can be, for example, of a predetermined or specific size configured to be placed in a heating chamber of a device sized to receive the article.

[0163] 1 shows an example of an aerosol delivery system 100. System 100 comprises an aerosol delivery device 101 for generating an aerosol from an aerosol-generating medium / material and a replaceable article 110 comprising the aerosol-generating medium. Device 101 can be used to heat replaceable article 110 comprising the aerosol-generating medium to generate an aerosol or other inhalable medium that can be inhaled by a user of device 101.

[0164] The device 101 comprises a housing 103 that surrounds and houses the various components of the device 101. The housing 103 is elongated. The device 101 has an opening 104 at one end through which an item 110 can be inserted for heating by the device 101. The item 110 can be fully or partially inserted into the device 101 for heating by the device 101.

[0165] In various embodiments, device 101 does not include an opening. In such a configuration, device 101, or a component of device 101, may be partially received within at least a portion of article 110.

[0166] The device 101 may include a user-operable control element 106, such as a button or switch, that when operated, e.g., pressed, causes the device 101 to operate. For example, a user can activate the device 101 by pressing the switch 106.

[0167] The device 101 defines a longitudinal axis 102, and the article 110 may extend along the longitudinal axis 102 when inserted into the device 101. The opening 104 is aligned with the longitudinal axis 102.

[0168] 2 is a schematic illustration of the aerosol delivery system 100 of FIG. 1, showing various components of the device 101. It will be appreciated that the device 101 may include other components not shown in FIG.

[0169] As shown in FIG. 2 , device 101 includes an apparatus 200 for heating an aerosol-generating material. Apparatus 200 includes a heating assembly 201, a controller (control circuit) 202, and a power supply 204. Apparatus 200 includes a body assembly 210, which may include a chassis and other components that form part of the device. Heating assembly 201 is configured to heat an aerosol-generating medium or material of an article 110 inserted into device 101, thereby generating an aerosol from the aerosol-generating medium. Power supply 204 provides power to heating assembly 201, which converts the provided electrical energy into thermal energy for heating the aerosol-generating material.

[0170] The power source 204 may be, for example, a battery, such as a rechargeable battery or a non-rechargeable battery. Examples of suitable batteries include, for example, lithium batteries (such as lithium-ion batteries), nickel batteries (such as nickel-cadmium batteries), and alkaline batteries.

[0171] Power supply 204 may be electrically coupled to heating assembly 201 to provide power under the control of controller 202 when needed to heat the aerosol-generating material. Control circuitry 202 may be configured to activate and deactivate heating assembly 201 based on a user operating control element 106. For example, controller 202 may activate heating assembly 201 in response to a user operating switch 106.

[0172] The end of device 101 closest to opening 104 is sometimes referred to as the proximal end (or mouth end) 107 of device 101, as that end is closest to the user's mouth during use. During use, a user inserts article 110 into opening 104, operates user control 106 to begin heating the aerosol-generating material, and inhales the aerosol generated by the device. This causes the aerosol to flow through article 110 along a flow path toward the proximal end of device 101.

[0173] The other end of the device, furthest from opening 104, may be referred to as the distal end 108 of device 101, as that end is the end farthest from the user's mouth during use. When a user inhales the aerosol generated by the device, the aerosol flows in a direction toward the proximal end of device 101. The terms proximal and distal, when applied to features of device 101, are described by reference to the relative positions of such features with respect to one another in the proximal-distal direction along axis 102.

[0174] The heating assembly 201 may include various components for heating the aerosol-generating material of the article 110 by an induction heating process. Induction heating is a process of heating an electrically conductive heating element (such as a susceptor) by electromagnetic induction. The induction heating assembly may include an induction element, e.g., one or more inductor coils, and a device for passing a varying current, such as an alternating current, through the induction element. The varying current in the induction element results in a varying magnetic field. The varying magnetic field penetrates a susceptor (heating element) appropriately positioned with respect to the induction element and generates eddy currents within the susceptor. The susceptor has an electrical resistance to eddy currents, and therefore, the flow of eddy currents against this resistance causes the susceptor to heat by Joule heating. If the susceptor includes a ferromagnetic material such as iron, nickel, or cobalt, heat can also be generated by magnetic hysteresis losses in the susceptor, in other words, by the varying orientation of magnetic dipoles in the magnetic material as a result of their alignment with the varying magnetic field. In induction heating, heat is generated inside the susceptor, allowing for rapid heating, as compared to heating by conduction, for example, and further, there is no need for any physical contact between the induction element and the susceptor, allowing for increased flexibility in design and application.

[0175] Apparatus 200 includes a heating chamber 211 configured and dimensioned to receive an article 110 to be heated. Heating chamber 211 defines a heating region 215. In this example, article 110 is generally cylindrical, and heating chamber 211 is correspondingly generally cylindrical in shape. However, other shapes are possible. Heating chamber 211 is formed by a receptacle 212. Receptacle 212 includes an end wall 213 and a peripheral wall 214. End wall 213 serves as a base for receptacle 212. In embodiments, receptacle 212 is a unitary component. In other embodiments, receptacle 212 comprises two or more components.

[0176] The heating chamber 211 is defined by the inner surface of a receptacle 212. The receptacle 212 acts as a support member. The receptacle 212 comprises a generally tubular member. The receptacle 212 extends along, around, and substantially coaxially with the longitudinal axis 102 of the device 101. However, other shapes are possible. The receptacle 212 (and thus the heating region 215) is open at a proximal end of the receptacle 212 such that an item 110 inserted into the opening 104 of the device 101 can be received by the heating chamber 211 through the opening 104. The receptacle 212 is closed at a distal end of the receptacle 212 by an end wall 213. Device 101 may include one or more air conduits 251 that form part of an air passage, as described in detail below. During use, article 110 overlies air conduit 251. Air can enter article 110 through one or more conduits that form part of the air passage and flow through article 110 toward the proximal end of device 101.

[0177] The receptacle 212 is formed without a material that can be heated by the penetration of a fluctuating magnetic field. The receptacle 212 may be formed from an insulating material. For example, the receptacle 212 may be formed from a plastic, such as polyetheretherketone (PEEK). Other suitable materials are possible. The receptacle 212 may be formed from a material that ensures that the heating assembly 201 remains rigid / solid when the assembly is operated. Using a non-metallic material for the receptacle 212 can help regulate heating of other components of the device 101. The receptacle 212 may be formed from a rigid material to aid in supporting the other components.

[0178] Other configurations of the receptacle 212 are possible. For example, in an embodiment, the end wall 213 is defined by a portion of the heating assembly 201. In an embodiment, the receptacle 212 comprises a material that is heatable by the penetration of a changing magnetic field.

[0179] 2, heating assembly 201 includes heating element 220. Heating element 220 is configured to heat heating region 215. Heating region 215 is defined in heating chamber 211. In an embodiment, heating chamber 211 defines a portion of heating region 215 or the extent of heating region 215.

[0180] Heating region 215 is the region or volume in which an article can be received for heating by device 101. Heating region 215 is therefore at least partially defined by heating assembly 201. Heating region 215 is the space adjacent to heating element 220. In embodiments comprising heating chamber 211, such as shown in FIG. 2, heating chamber 211 defines heating region 215. That is, heating chamber defines heating region 215. In embodiments, heating element 220 defines the heating region.

[0181] As illustrated in FIG. 18 , in various embodiments, the apparatus 200 does not include a heating chamber. The heating element protrudes from the housing 103. In such embodiments, the receptacle and heating chamber may be omitted, and the heating element may be surrounded by free space. The heating element, or at least a portion of the heating element, is not surrounded by a surrounding element, such as a peripheral wall of the device, when an item is placed on the heating element. The term “heating region” is understood to include the space surrounding the heating element. That is, the heating region may not be defined or surrounded by components of the device 101.

[0182] In embodiments, the heating element forms part of a heating configuration. The heating configuration comprises a heating element protruding from a base. In other embodiments, the heating element is in the article, and the heating configuration comprises a protruding member protruding from a base. In embodiments, the heating element or protruding member comprises a magnetic field generator configured to generate a varying magnetic field, including an inductor coil. In embodiments, the heating configuration is an induction heating configuration. In embodiments, the heating configuration is a resistive heating configuration. The heating element 220 is heatable to heat the heating zone 215. The heating element 220 is an induction heating element. That is, the heating element 220 comprises a susceptor that is heatable by the penetration of a varying magnetic field. The susceptor comprises a conductive material suitable for heating by electromagnetic induction. For example, the susceptor may be formed from carbon steel. It will be understood that other suitable materials may be used, for example, ferromagnetic materials such as iron, nickel, or cobalt.

[0183] The heating assembly 201 includes a magnetic field generator 240. The magnetic field generator 240 is configured to generate one or more varying magnetic fields that penetrate the susceptor to cause heating in the susceptor. The magnetic field generator 240 includes an inductor coil arrangement 241. The inductor coil arrangement 241 includes an inductor coil 242 that serves as an inductor element. The inductor coil 242 is a helical coil, although other arrangements, such as a spiral coil, are contemplated. In an embodiment, the inductor coil arrangement 241 includes two or more inductor coils 242. The two or more inductor coils in an embodiment may be disposed adjacent to each other and coaxially aligned along an axis.

[0184] In some examples, during use, the inductor coil is configured to heat the heating element 220 to a temperature between about 200°C and about 350°C, such as between about 240°C and about 300°C, or between about 250°C and about 280°C.

[0185] The heating element 220 extends in the heating area 215. The heating element 220, acting as a protruding element, protrudes in the heating area 215. The heating element 220 stands up from the base.

[0186] In an embodiment, the base is formed by a feature other than the end wall 213 of the receptacle.

[0187] Heating element 220 is spaced from peripheral wall 214. Heating assembly 201 is configured such that when article 110 is received by heating chamber 211, heating portion 221 of heating element 220 extends to the distal end of article 110. Heating element 220 is positioned within article 110 during use. Heating element 220 is configured to heat the aerosol-generating material of article 110 from the inside, and for this reason is referred to as an internal heating element.

[0188] The heating element 220 extends (axially) from the distal end of the heating chamber 211 into the heating chamber 211 along the longitudinal axis 102 of the device. In embodiments, the heating element 220 extends into the heating chamber 211 at a distance from the axis 102. The heating element 220 may be off-axis or non-parallel to the axis 102. While one heating element 220 is shown, it will be understood that in embodiments, the heating assembly 201 comprises multiple heating elements 220. Such heating elements in embodiments are spaced apart from one another but parallel to one another.

[0189] The inductor coil 241 is disposed outside the receptacle 212. The inductor coil 241 surrounds the heating region 215. The helical inductor coil 241 extends around at least a portion of the heating element 220, which acts as a susceptor. The helical inductor coil 241 is configured to generate a varying magnetic field that penetrates the heating element 220. The helical inductor coil 241 is disposed coaxially with the heating chamber 211 and the longitudinal axis 101. In an embodiment, the or one coil is at the distal end of the receptacle 212. The coil is, for example, a flat helical coil.

[0190] Inductor coil 241 is a helical coil comprising a conductive material, such as copper. The coil is formed from wire, such as Litz wire, that is helically wound around a support member (not shown). The support member may be formed by receptacle 212 or by another component. In embodiments, the support member is omitted. The support member is tubular. Coil 241 defines a generally tubular shape. Inductor coil 241 has a generally circular outline. In other embodiments, inductor coil 241 may have a different shape, such as a generally square, rectangular, or oval. The coil width may increase or decrease along the length of the coil.

[0191] Other types of inductor coils, such as flat spiral coils, may also be used. Using a spiral coil allows for defining an elongated inductor region for receiving a susceptor therein, providing that a long, narrow length of susceptor can be received in the elongated inductor region. The length of the susceptor subjected to the varying magnetic field can be maximized. Providing a helical coil configuration in the encapsulated inductor region can assist in the flux concentration of the magnetic field.

[0192] Litz wire comprises multiple individual wires that are individually insulated and twisted together to form a single wire. Litz wire is designed to reduce skin effect losses in the conductor. Other wire types, such as solid, may be used. The configuration of the helical inductor coil may vary along the axial length of the helical inductor coil. For example, the or each inductor coil may have substantially the same or different values ​​of inductance, axial length, radius, pitch, number of turns, etc.

[0193] The heating element 220 protrudes in the heating region 215 and is received by the item 110. FIG. 2 shows the item 110 received in the device 101. The item 110 is sized to be received by the receptacle 212. The outer dimensions of the item 110 perpendicular to the longitudinal axis of the item 110 substantially correspond to the inner dimensions of the chamber 211 perpendicular to the longitudinal axis 102 of the device 101 to allow insertion of the item 110 into the receptacle 212. In an embodiment, a gap 216 is defined between the exterior 111 of the item 110 and the interior 217 of the receptacle 212. The gap 216 can serve as an air passageway along at least a portion of the axial length of the chamber 211. The insertion end 112 of the item 110 is positioned to reside adjacent to the base of the receptacle 212.

[0194] 3 shows an item 110 partially inserted into device 101. As shown, item 110 is spaced apart from heating element 220 in heating region 215. Item 110 may be in the process of being inserted into heating region 215 or withdrawn from heating region 215.

[0195] The heating element 220 extends from the distal end of the receptacle 212 in a heating region 215. The heating element 220 rises from the end wall 213. The heating element 220 comprises a heating member 224. The heating member 224 is elongated. The heating element 220 comprises a base end 221 and an opposing free end 222. The heating member 224 is a pin or column. Other shapes are contemplated; for example, in embodiments, the heating member 221 is a blade. In embodiments, the heating element 220 is a cylinder having a circular cross section, or an elliptical cylinder, a hyperbolic cylinder, or a parabolic cylinder. Other cross-sectional shapes configured for use with an article having a corresponding article aperture are contemplated. In embodiments, the heating element is tapered. The heating element may comprise one or more tapered portions. The heating element may taper toward the free end.

[0196] Heating element 220 includes an exterior surface 223. Exterior surface 223 extends around heating element 220. Exterior surface 223 extends between base end 221 and free end 222. Heating element 220 is generally cylindrical, although other shapes are contemplated. Exterior surface 223 defines the outside of heating element 220.

[0197] The article 110 includes an article aperture 113. The article aperture 113 is pre-formed in the article 110. In embodiments, the article aperture 113 is formed by a tubular portion of the article 110. In embodiments, the article aperture 113 extends partially along the longitudinal axis of the article. The article aperture 113 includes an inner surface 114. The article aperture 113 has a closed end 115. The heating element 224 is sized to be received in the aperture 113. The heating element 224 and the article aperture 113 are complementarily sized to form a snug fit. The article aperture inner surface 114 is configured to form an intimate contact with the heating element 224 to maximize heat transfer between the heating element 220 and the article 110.

[0198] The heating element 220 includes a seal 300. The seal 300 is positioned to seal with the article 110 in the heating chamber 211. The seal 300 seals around the heating member 224. The seal 300 may form part of the receptacle 212. The seal 300 forms a seal between the article 110 and the heating element 220. The seal 300 serves to isolate the air flow path through the article from the exterior of the article. The seal includes a sealing surface 301. The seal 300 includes a chamfer 302. Other configurations are contemplated, such as face seals, lip seals, shoulders, and O-rings.

[0199] The free end 222 in this embodiment is not sharp. Referring to FIG. 4 , in an embodiment, the hole 113 in the article 110 is omitted. In an embodiment, the outer dimensions of the heating element are larger than the outer dimensions of the hole. In such a configuration, the heating element is configured to deform and / or expand the article 110 and be inserted into the article 110. To enable this, the inner heating element 220 is configured to penetrate the article 110 inserted into the device 101. In such an embodiment, the free end 222 of the heating element 220 comprises a sharp edge or tip. In an embodiment, the free end 222 of the heating element 220 comprises a sharp edge, tip, or other guiding mechanism to assist in positioning the heating element 220 in the article 110.

[0200] An airflow arrangement 250 is provided that forms part of an airway through heated region 215. This airflow arrangement 250 provides an airflow path such that when the device is in use, air flows from a location external to the device through heated region 215 when a user inhales, thereby enabling the user to inhale an aerosol in heated region 215 that is produced by the aerosol-generating material.

[0201] Air flow arrangement 250 defines a portion of an air path along which air can enter heating chamber 211. The air flows through items in heating chamber 211 toward the proximal end of device 101. Air flow arrangement 250 comprises an air conduit 251 to heating element 220. In embodiments, at least one additional air conduit is located in end wall 213 (not shown). Air conduit 251 communicates with heating chamber 211 external to receptacle 212.

[0202] An air outlet 252 is formed in the heating element 220. The air outlet 252 comprises an array of openings 253 in the outer surface 223 of the heating element 220. The number of openings 253 may vary, or may comprise a single opening. In the embodiment of FIG. 3, the heating element 220 is tubular with an array of openings 253 providing communication between the inside and outside of the heating element 220. The configuration and arrangement of the air flow arrangement 250, e.g., the array of openings, may vary in embodiments. While four openings 253 are shown, the array of openings 253 in embodiments is two or more openings. In some embodiments, the air outlet 252 comprises a single air opening.

[0203] Figures 5-17 illustrate an embodiment of a heating element 220 suitable for providing an air passage as described above. The heating element 220 is shown separated from the other features of the device 101 in Figures 5-11.

[0204] 5, one configuration of the heating element 220 is shown. The heating element 220 is hollow. The heating element 220 includes a body 260. The body 260 is formed by a heating member 224. The heating member 224 defines a bore 261. The bore 261 extends longitudinally along the heating member 224 from the distal end toward the proximal end. The bore 261 defines an air conduit 251.

[0205] The heating element 220 has an air inlet 262. Air is supplied through the air inlet 262 to the air conduit 251. The air flow into the heating element 220 is indicated by arrow 263. The air inlet 262 provides an air path from a location external to the receptacle 212, through the heating element 220, out an air outlet 252 of the heating element 220, and into the heating chamber 211. Air can be provided to the air conduit 251 from outside the body assembly 210 through a passageway (not shown) formed in the body assembly 210 of the device to be in fluid communication with the air conduit 251.

[0206] In some embodiments, two or more air conduits are provided in the heating element 220. In such embodiments, two separate passages may be defined in the heating element 220. Each air conduit has one or more separate air inlets and one or more separate air outlets. Thus, different air flow characteristics may be supplied to different regions of the heating element, and therefore, different portions of the article. Each of the multiple conduits may be fluidly isolated from one another in the heating element 220.

[0207] The heating element 220 includes a side wall 264 and an end wall 265. The end wall 265 forms a closed end of the air conduit 251. It will be appreciated that the air conduit 251 is formed in the heating element 224 by a cavity, such as a hole or passageway. Thus, the air conduit 251 may extend only partway along the length of the heating element 224.

[0208] The heating element 224 is formed from a heating material that is heatable by the penetration of a fluctuating magnetic field. Thus, the heating element 224 acts as a susceptor. The entire heating element 224 may be formed from a heating material, whereby the conduit and air outlet are formed by the heating material. In an embodiment, the heating element 224 comprises a support and a layer of heating material, whereby the conduit and / or air outlet are formed by the support.

[0209] Air outlet 252 comprises an array of openings 253. Each opening 253 extends from the inside to the outside through heating element 224. Openings 253 are formed through the sidewall of heating element 224.

[0210] As shown in FIG. 5 , the illustrated opening 252 is circular. In some embodiments, the opening has a different shape. For example, a teardrop-shaped opening may be formed. Such a shape may help direct the airflow from the air outlet 252 in a particular direction. The central axis of the opening 253 may be angled relative to a direction perpendicular to the outer surface of the heating element 220. This may also help direct the airflow from the opening in a particular direction.

[0211] In embodiments, the size and location of openings 253 are selected to provide different airflow configurations. For example, different airflows may be provided to different portions of heating chamber 211. Openings 253 may be selected to provide a particular inhalation experience to the user. For example, the configuration of the openings may affect the resistance to inhalation that the device offers.

[0212] A particular pattern or configuration of openings can provide a different sensation to the user when inhaling, which may be desirable to enhance the user experience of the device. It may also be advantageous to have a higher density or available area of ​​openings 253 per unit area at certain locations in the heating chamber 211, so that certain portions of the aerosol-generating material are induced to produce an aerosol before other portions of the aerosol-generating material. This can, for example, affect the delivery of aerosol from the aerosol-generating material during use, thereby providing longer-lasting aerosol generation or more powerful delivery of the aerosol. The aerosol-generating material may also be designed to have varying consistencies or material properties, for example, it may include different sections made from different materials, and the configuration of openings 253 may be provided to accommodate the different material properties in the different sections, as appropriate.

[0213] There are three sets of openings 253a, 253b, 253c in the heating element 220. Each set of openings 253a, 253b, 253c is arranged as a circumferential band of openings. The number of sets may vary and may be more or less than three sets; for example, FIGS. 2 and 3 show four sets. The sets of openings 253a, 253b, 253c are spaced apart along the length of the heating element 220. The sets 253a, 253b, 253c are equally spaced apart along the length of the heating element 220. In embodiments, the spacing may vary. Each set of openings includes multiple air openings 253. The openings in each set 253a, 253b, 253c are distributed equidistantly relative to one another about the circumference of the heating element 220. Also, the circumferential spacing of the openings 253 may vary.

[0214] In the example shown in FIG. 5 , there are four openings in each set 253a, 253b, and 253c of openings 253, although there may be more or fewer than four openings in each set 253a, 253b, and 253c. This configuration of openings 253 can help provide an evenly distributed airflow to each area of ​​aerosol-generating material along the heating element 220. This can help ensure that all of the aerosol-generating material receives the airflow and, therefore, that the aerosol-generating material produces an aerosol as quickly as possible after the heating element 220 heats up. This can further ensure that all of the aerosol-generating material is used up during use. Even distribution of airflow to the heating chamber 211 can improve the user experience and help avoid saturation of the aerosol generated in the heating chamber 211, thereby increasing the efficiency of the device.

[0215] The heating element 220 illustrated in FIG. 5 is generally cylindrical in shape with a truncated end. One or more openings may be formed in the truncated end of the heating element 220. This can have the advantage of providing airflow over the end of the heating element 220 into the region of the heating chamber 221. In embodiments where the heating element 220 has a conical end portion (such as those illustrated in FIGS. 6-9), openings may similarly be formed in the conical portion. It will be understood that alternating shaped end portions (not shown) may also be provided. Moreover, as previously mentioned, in embodiments, the heating element 220 may not be generally cylindrical, but may have a different shape, for example, a blade shape.

[0216] Figure 6 illustrates another configuration of heating element 220. The configuration of heating element 220 in Figure 6 is generally the same as that described above with reference to Figure 5, and therefore will not be described in detail. However, in Figure 6, the configuration of airflow arrangement 270 is different. In particular, the configuration of the array of openings 272 is different.

[0217] The heating element 220 has an air outlet 271 with an array of openings 272. The array of openings 272 has a linear configuration in a direction along the length of the heating element 220. The flow area of ​​the openings 272 decreases from the distal end to the proximal end. In this embodiment, the diameter of each hole forming the opening varies. The diameter of adjacent holes decreases from the distal end to the proximal end. The distal opening 272a closest to the base end 221 of the heating element 220 has a larger flow area than the adjacent proximal opening 272b. This variation in flow area of ​​the openings 272a, 272b, 272c, 272d, 272e continues axially such that the opening 272e closest to the opposing free end 222 of the heating element 220 defines the smallest flow area of ​​the array of openings 272. In this embodiment, the openings 272 have a continuous or gradual decrease in flow area from the distal end to the proximal end. 6, when opening 272 has a circular cross-section, a decrease in flow area means a decrease in the cross-sectional diameter of opening 272. However, in embodiments, the openings have different cross-sectional shapes.

[0218] In other embodiments, openings 272 comprise multiple groups of openings, with each opening in a group having the same flow area within each group. For example, in one embodiment, six openings may be provided in each linear configuration, with two openings closer to base end 221 having a smaller flow area than two openings closer to opposing free end 222, and an intermediate group of two openings between free end 222 and base end 221 having a larger flow area than the openings closer to free end 222 and a smaller flow area than the openings closer to base end 221. Various numbers of openings and groups of openings may be provided.

[0219] The air outlet 271 comprises multiple sets of openings 272 in a linear configuration, the sets being spaced equidistantly from one another about the circumference of the heating element 220. The air outlet 271 in embodiments is also not a linear configuration as shown, but nevertheless comprises openings that provide a greater available opening area closer to the base end 221 than to the free end 221. For example, in embodiments, the air outlet 252 may comprise a greater density of openings near the base end 221 than to the free end 222, and additionally or alternatively, may comprise larger openings closer to the base end 221 such that there is a greater area of ​​openings per unit area of ​​the heating element 220 closer to the base end 221 compared to the free end 222.

[0220] A configuration with a smaller flow area and / or a lower density of openings 272 of the heating element 220 near the free end 222 (such as that illustrated in FIG. 6 ) can provide a more uniform airflow to different portions of the heating chamber 211. This may be because the airflow may be more likely to leak through openings 272 closer to the free end 222 as it travels the length of the conduit of the heating element 220, hits the closed end of the heating element 220, reduces velocity, and may leak through openings closer to the free end 222. Having a smaller available flow area of ​​openings (and / or openings each having a smaller flow area) near the free end 222 can therefore rebalance this effect, as a larger available area of ​​openings (and / or openings each having a larger flow area) closer to the base end 221 of the heating element 220 will make it easier for air to flow from that region. This helps to provide a consistent airflow volume along the length of the heating element 220, for example, keeping the total volume per second of airflow to each region of the heating chamber 211 more even.

[0221] Figure 7 illustrates another configuration of heating element 220. The configuration of heating element 220 in Figure 7 is generally the same as that described above with reference to Figure 6, and therefore will not be described in detail. The primary difference between the embodiment of Figure 7 compared to the embodiment of Figure 6 is the different configuration of airflow arrangement 275 in the embodiment of Figure 7. In particular, openings 274 have a flow area that increases rather than continuously decreases in a direction from the distal end to the proximal end.

[0222] Figure 8 illustrates another configuration of heating element 220. The configuration of heating element 220 in Figure 8 is generally the same as that described above with reference to Figure 5, and therefore will not be described in detail. However, in Figure 8, the configuration of airflow arrangement 280 is different. In particular, the configuration of the array of openings 276 is different.

[0223] The openings in the array of openings 276 each have the same flow area. In embodiments, the flow areas may be different. The openings 283 are disposed along the length of the heating element 220. The openings 276 are disposed such that they are spaced closer together in a proximal region 284 toward the free end 222 of the heating element 220. That is, the density of the openings 276 is greater in the proximal region 284. The openings 276 are spaced farther apart in a distal region 285 toward the base end 221. That is, the density of the openings 276 is lower near the base end 221 of the heating element 220.

[0224] It will be appreciated that the flow area and / or density of the array of openings may vary gradually along the length of the heating element 220. The flow area and / or density of the array of openings may vary gradually circumferentially around the heating element 220.

[0225] Configurations with a larger flow area and / or a higher density of openings in the heating element 220 toward the free end 222 of the heating element (such as those illustrated in FIGS. 7 and 8 ) may be combined with at least one air conduit located in the end wall 213 such that airflow is supplied to the distal end of the receptacle 212 from both conduits in the end wall 213 and openings near the base end 221 of the heating element, and airflow is provided from openings near the free end 222 of the heating element closer to the proximal end of the receptacle. Having a larger available flow area of ​​openings (and / or openings each having a larger flow area) near the free end 222 may be advantageous because in such configurations, the region of the receptacle closest to the base end 221 of the heating element 220 receives airflow from both the openings in the heating element 220 and the end wall 213. Therefore, a larger available area of ​​openings per unit area of ​​heating element 220 may be desirable to achieve an even distribution of airflow to each region of heating chamber 211. Even without conduits in end wall 213, a heating element with a larger flow area of ​​openings per unit area of ​​heating element 220 nearest free end 222 may still be advantageous.

[0226] Providing openings in the heating element 220 that vary in size along the length of the heating element 220, such as those shown in Figures 6 and 7, and / or configurations with a higher or lower density of openings nearest the base end 221 or free end 222 of the heating element 220 (e.g., Figure 8), can enable the device 101 to supply different amounts of airflow to different portions of the aerosol-generating material of the article 110 depending on how close the aerosol-generating material is to the distal end of the receptacle 212.

[0227] Figure 9 illustrates another embodiment of a heating element 220. The configuration of the heating element 220 in Figure 9 is generally the same as that described above with reference to Figure 5, and therefore a detailed description will be omitted. However, in Figure 8, the configuration of the airflow arrangement 280 is different. In particular, the configuration of the array of openings 287 is different.

[0228] The embodiment of FIG. 9 has two regions of openings 276: a first region 287a and a second region 287b. The first region 287a is arranged as a first band of openings, and the second region 287b is arranged as a second band of openings. The first region 287a and the second region 287b are spaced axially along the heating element. The first band is disposed relatively proximally compared to the first band. Each group of openings 276 includes multiple openings around the heating element (some not clearly visible in the figure). The openings 287 in each band are substantially evenly distributed. The number of opening regions may vary. The heating element 220 includes two aperture-free regions 289. The number of aperture-free regions may vary, or the heating element 220 may include a single aperture-free region.

[0229] The provision of at least one unapertured region can assist in controlling the flow of air into the article. In embodiments, it is also possible to focus the air flow at discrete regions of the article. The or each unapertured region is non-permeable.

[0230] 10, the heating element 220 has elongated openings 290. As shown, the openings 290 are oval-shaped, although other shapes are contemplated. Elongated openings can help minimize the number of openings while maximizing the flow area through the air outlet 252. Moreover, the heating element 220 in embodiments includes openings of a number of different configurations.

[0231] While the heating element 220 described with respect to FIGS. 5-10 includes an open opening, it will be understood that the heating element 220 in embodiments includes a restrictor for restricting the ingress of chips or debris into the air conduit 251. The opening can be of a size sufficient to acceptably restrict the ingress of debris into the heating element 220. As shown in FIG. 11 , the heating element may include an air opening 295 with a mesh 296. The mesh 296 extends across the air opening 295. The mesh 296 defines a plurality of openings or perforations for permitting the passage of fluid. In embodiments, the mesh 296 is formed from a susceptor material. In such a configuration, the mesh 296 serves to heat the heating region 215 either in conjunction with or instead of the body 260 of the heating element 220. In other embodiments, the mesh 296 is devoid of heating material. In embodiments, an array of perforations is formed across the body to serve as air openings.

[0232] Heating element 220 is configured to heat the aerosol-forming material of article 110 sufficiently to generate an aerosol from the aerosol-forming material without requiring heating from another source.

[0233] 12 and 13 illustrate an aerosol delivery device 101 with an alternative airflow arrangement 350. The aerosol delivery device 101 is generally the same as the device described above with respect to FIGS. 5-11. Features of the arrangements described above are applicable to the arrangements described below, but detailed discussion is omitted for clarity. The airflow arrangement 350 includes an airflow adjustment assembly 400. The assembly 400 is positioned to vary airflow through the air outlet 252 of the heating element 220. The assembly 400 is configured to at least selectively restrict airflow through the air openings.

[0234] The heating element 220 shown in Figure 12 has an array of openings 402 spaced equidistantly along the length of the heating element 220. However, the openings 402 may be a different size or may be located differently than shown, for example, as described above with respect to Figures 5-11.

[0235] The airflow adjustment assembly 400 is configured to vary the available airflow area to the heating region 215. The assembly 400 is positioned to cover or expose at least a portion of the available airflow area to vary the airflow. The heating element 220 is positioned to be movable along the longitudinal axis A of the heating element 220 relative to the receptacle 212. Thus, the degree to which the heating element 220 protrudes into the receptacle 212 can be varied to allow for controlled airflow. FIG. 12 shows the heating element 220 in a first position. In the first position, the heating element 220 protrudes into the receptacle 212 by a first, smaller extent. In the first position, only approximately half of the heating element 220 protrudes into the receptacle 212, although the extent may vary. FIG. 13 shows the heating element 220 in a second position. In the second position, the heating element 220 protrudes into the receptacle 112 by a second, greater degree. The second degree is greater than the first degree. In the second position, a majority of the heating element 220 protrudes into the receptacle 112.

[0236] As shown in FIG. 12 , when the heating element 220 protrudes into the receptacle 212 in a first position, two openings 402 are in fluid communication with the heating zone 215. In such a configuration, a percentage of the total air outlets 252 are available to provide airflow to the heating zone. The remaining air flow area is blocked. When the heating element 220 is moved along its longitudinal axis to a second position so as to protrude further into the receptacle 212, all four of the openings 402 are in fluid communication with the heating zone 215, as shown in FIG. 13 . The available flow area of ​​the air outlets 252 in the first position is therefore greater than the available flow area of ​​the air outlets 252 in the second position. While two positions of the heating element 220 are shown, it will be understood that the heating element 220 can be moved between different predetermined positions along its longitudinal axis to achieve a range of different available flow areas.

[0237] The device 101 includes a space, such as a slot (not shown), formed in the body assembly 210 that is shaped to receive the heating element 220. This allows the heating element 220 to translate along its longitudinal axis.

[0238] In embodiments, device 101 is configured to allow heating element 220 to be manually moved by a user along the longitudinal axis of heating element 220; for example, a switch acting as the actuator may be used. In other embodiments, a mechanized structure, for example, an electric motor, acting as actuator 420, is operable to activate airflow adjustment assembly 400. In such a configuration, the motor is engaged to move a protruding portion of heating element 220 into or out of receptacle 212.

[0239] The device includes a seal 404. The seal 404 in embodiments generally corresponds to the seals described above. The seal 404 extends at least partially around the base of the heating element 220. The heating element 220 and the seal 404 can be in sliding engagement, and the seal 404 can be attached to the distal end of the receptacle 212. The seal 404 slidably seals the heating element 220 with the receptacle 212 as the heating element 220 translates along its longitudinal axis. The heating element 220 slides through the seal 404. The seal 404 restricts airflow from leaking between the heating element 220 and the body assembly 210 into the receptacle. The seal 404 acts as a collar around the heating element 220. In embodiments, the seal 404 acts as a barrier that selectively restricts airflow through at least one air opening depending on the position of the heating element 220. In an embodiment, the base of the receptacle 212, for example the rim of the opening through which the heating element 220 protrudes, acts as a collar.

[0240] The airflow adjustment assembly 400 illustrated in Figures 12 and 13 provides a simple means for adjusting the available flow area of ​​the air outlet 252. Such a configuration minimizes complexity and therefore aids in ease of maintenance. The heating element 220 can be moved to partially protrude into the receptacle 212. In such a position, the heating element 220 takes up less space in the receptacle 212. This may be desirable, for example, if a user desires to insert more aerosol-generating material into the device 101 to obtain a greater total volume of aerosol during use.

[0241] 14 and 15 show another embodiment of a flow adjustment assembly 400. The configuration is similar to that previously described, and therefore a detailed description will be omitted. The features of the configuration described above are applicable to the configuration described below, but detailed discussion will be omitted for clarity.

[0242] The flow regulation assembly 400 includes a piston 405. The piston 405 extends in a bore 410 of the heating element 220. The piston 405 is configured to translate along a longitudinal axis of the heating element 220 (indicated by arrow 406) to allow the piston 405 to translate in the bore 410. A head 408 of the piston 405 is shaped to complement an inner facing surface 412 of the heating element 220. The piston head 408 may include a slidable seal (not shown) around its outer periphery to allow the head 408 to be in sliding sealing engagement with the inner facing surface 412. The piston head 408 acts as an internal barrier within the heating element.

[0243] Piston 405 includes a connecting rod 414 attached to head 408. Connecting rod 414 acts as a drive member. Connecting rod 414 has a diameter smaller than that of bore 410 to form a space 416, or passageway, between connecting rod 414 and bore 410. Space 416 serves as the air supply side of bore 410. The portion of bore 410 beyond head 408 is the closed side of bore 410 and is fluidly isolated from the air inlet.

[0244] The illustrated holes 410 and connecting rod 414 have a circular cross-sectional shape. In other embodiments, the holes 410 and connecting rod 414 may have different cross-sectional shapes. For example, the heating element 220 may have a blade shape. Moreover, the connecting rod 414 may not have a smaller diameter or width than the holes 410 and instead may extend to the inner facing surface 412 of the heating element 220. In such embodiments, a passage or groove may be formed in the outer surface of the connecting rod 414, along which the flow can exit the opening 418.

[0245] The heating element 220 includes a band of openings 418 disposed along the length of the heating element 220. During use, the piston 405 can translate along the longitudinal axis to allow the available flow area of ​​the air outlet 252 to be adjusted. The device provides an air passageway such that air can enter the space 416 from a location external to the device and flow out through at least one opening 418 formed in the heating element 220. The piston head 408 regulates air flow along the holes 410, so that air traveling up through the space 416 exits the space via the openings 418. The number of openings 418 through which air can exit is determined by the position of the piston 405 within the holes 410.

[0246] FIG. 14 shows the piston 405 in a first operating position. When the piston 405 is in the first operating position, the piston head 408, which acts as a barrier, is disposed approximately one-third of the way along the bore 410 from the distal end. As shown, one band 418a of the opening is on the air supply side, and two bands 418b, 418c of the opening are on the closed side. It will be understood that the number of bands of the opening may vary. In the first position, air can pass only through the first band 418a of the opening 418. Air is restricted from flowing to the closed side. Air is therefore restricted from flowing through the remaining bands 418b, 418c of the opening. FIG. 15 shows the piston 405 in a second operating position. In the second operating position, the piston head 408 is moved along the heating element 220. The piston head is moved so that it is disposed approximately two-thirds of the way along the bore 410 from the distal end. As shown, two bands of openings 418a, 418b are on the air supply side and one band of openings 418c is on the closed side. It will be understood that the number of bands of openings may vary. The piston thus helps adjust the available area of ​​the air outlet 252. While two positions of the piston 405 are shown, it will be understood that the piston 405 can be moved continuously along its longitudinal axis to achieve a range of different positions. In other embodiments, the piston 405 is movable between several predetermined positions.

[0247] In embodiments, device 101 is configured to allow piston 405 to be manually moved by a user along the longitudinal axis of piston 405; for example, a switch or lever may be used as the actuator. In other embodiments, an electric motor is operable to act as the actuator for activating airflow adjustment assembly 400. In such a configuration, the motor is engaged to move a protruding portion of piston 405 into or out of receptacle 212.

[0248] 14 and 15 provide a means for reducing the airflow from the heating element 220 closer to the free end 222 of the heating element 220. This may be desirable under some conditions. The piston provides a powerful means for controlling the airflow outlet.

[0249] 16 and 17 illustrate another embodiment of a heating element 220 with a flow adjustment assembly 400. The configuration is similar to that previously described, and therefore a detailed description will be omitted. The features of the configuration described above are applicable to the configuration described below, but detailed discussion will be omitted for clarity.

[0250] The heating element 220 and flow regulation assembly 400 are similar to those described with respect to Figures 14 and 15. In this embodiment, the piston 405 includes an air passageway 422 extending through the connecting rod 414 and the piston head 408. The piston head 408 acts as a barrier. The piston head 408 fluidly separates the bore 410 into an air supply side and a closed side. The air supply side is toward the proximal end of the heating element 220, and the closed side is toward the distal end of the heating element 220. The closed side restricts air from flowing from the air passageway 422 to the heating element.

[0251] A passageway 422 extends along the length of connecting rod 414, which acts as a drive member. Device 101 is configured so that air enters along air passageway 422 into a chamber 424 formed by the end of head 408 and a portion of bore 410. Chamber 424 acts as an air supply.

[0252] As with the embodiments of FIGS. 12 and 14 , the number of openings 418 through which air can exit is determined by the position of the piston 405 within the bore 410. However, in this configuration, as the piston 405 extends further into the bore 410, the available area of ​​the air outlet 252 decreases, rather than increasing. This is illustrated in FIGS. 16 and 17 . FIG. 16 shows the piston 405 in a first operating position. In the first operating position, the piston head 408, which acts as a barrier, is disposed approximately one-third of the way along the bore 410 from the distal end. As shown, one band of openings 418 a is on the closed side, and two bands of openings 418 b, 418 c are on the air supply side. It will be understood that the number of bands of openings may vary. The volume of the chamber 242 comprises the majority of the available volume of the bore 410. The upper two bands of openings 418 are in fluid communication with the heating region 215, while the other openings are closed. Air is restricted from flowing through the closed side. Air is therefore restricted from flowing through the first band of openings 418a. FIG. 17 shows the piston 405 in a second operating position. In the second operating position, the piston head 408 is moved along the heating element 220. The piston head is moved so that it is disposed approximately two-thirds of the way along the bore 410 from the distal end. The chamber 242 comprises only a fraction of the total volume of the bore 410. Only the top band of openings 418 is in fluid communication with the heating region 215, while the other openings are closed. As shown, two bands of openings 418a, 418b are on the closed side, and one band of openings 418c is on the air supply side. It will be understood that the number of bands of openings may vary. In the second operating position, fewer openings 418 are in fluid communication with the heating region 215, and the available flow area of ​​the air outlet 252 is smaller. The piston therefore helps to regulate the available flow area of ​​the air outlet 252.

[0253] Although one passageway 422 is shown, there may be more than one passageway formed in the piston 405. This may help to reduce resistance to airflow through the piston 405.

[0254] The connecting rod 414 is shown to have a narrower diameter compared to the bore 410. In other embodiments, the connecting rod 414 has the same diameter as the bore 410. This may help provide the space needed to provide more than one passageway 422 in the piston.

[0255] Instead of the piston 405, control of the available flow area of ​​the air outlet 252 may be achieved through the use of a sleeve (not shown). The sleeve in embodiments acts as an internal barrier extending around the bore 410 or an external barrier extending around the outside of the heating element 220. The sleeve, similar to the previously described piston 405, can translate longitudinally along the heating element 220. The sleeve is configured to obstruct flow from any openings 418 through which the sleeve extends. Therefore, the further the sleeve protrudes along the heating element 220 and the fewer openings 418 are left unobstructed, the smaller the available flow area of ​​the air outlet 252.

[0256] 16 and 17, or the sleeve, provides a means for reducing airflow from the heating element 220 closer to the base end 221 of the heating element 220. This may be desirable under some conditions, for example, in embodiments where a conduit is already provided through the end wall 213 to the distal portion of the receptacle.

[0257] Figure 18 shows another embodiment. The embodiment of Figure 18 generally corresponds to that of Figure 2, except that the heating element 220 protrudes from the housing 103. In such an embodiment, the device does not include a receptacle, i.e., the heating region 215 is not surrounded or defined by another component.

[0258] Housing 103 defines a base 213a from which heating element 220 projects. Heating element 220 rises from base 213a. Heating element 220 is exposed. The term "exposed" will be understood to mean that a portion of the feature is not enclosed by another feature such that the feature extends beyond the exterior. Heating element 220 is not received in a heating chamber. In the case of the device of FIG. 18, the heating element extends beyond the exterior of the device's housing. In the embodiment of FIG. 18, the entire heating element 220 projecting from the base is unenclosed. In embodiments, a substantial portion of heating element 220 is exposed. Heating element 220 is not substantially enclosed or defined by another component. In such embodiments, only a small portion of the heating element extends beyond the exterior of the device's housing. Optionally, at least 80%, optionally 60%, and optionally 50% of the heating element is exposed.

[0259] Figure 18 also shows an article 110 for use with any of the embodiments described herein. The article 110 in Figure 18 is generally the same as the article 110 in Figure 2. The article 110 in Figure 18 may be used with the aerosol generating device 101 in Figure 18. The article 110 includes a hole 113. The hole may be omitted.

[0260] FIG. 18 shows a heating element 220. The heating element 220 is generally similar to the heating element of FIG. 2. The heating element 220 includes a heating member 224. The heating element 220 protrudes from a base 213a. The heating element 220 is generally cylindrical, although other shapes are contemplated. An airflow arrangement 250 is provided. The heating element 220 may correspond, for example, to the embodiments described above with respect to any of the heating elements of FIGS. 5-11. The airflow arrangement 250 provides an air flow path such that, when the device is in use and a user inhales, air flows from a location external to the device through the heated region 215, thereby enabling the user to inhale aerosol generated by the aerosol-generating material in the heated region 215 when an article is assembled to the device. An air outlet 252 is formed in the heating element 220. The air outlet 252 includes an array of openings 253 in the outer surface 223 of the heating element 220. The number of openings 253 may vary or may comprise a single opening. The configuration and arrangement of the airflow arrangement 250, e.g., the array of openings, may vary in embodiments. The heating element 220 of Figure 18 may comprise an airflow adjustment assembly 400, such as those in Figures 12-17, configured to vary the available airflow area to the heating region 215.

[0261] 19a and 19b show an aerosol generation device 101 in which the heating element 220 is exposed, and a portion of the heating element is surrounded by a raised rim 230 that rises from the base 213a. The heating element partially protrudes from the housing 103. That is, a portion of the heating element protrudes from the housing 103, and a portion of the heating element 220 is surrounded by other components of the device. For example, the housing 103 may include a raised rim 230 that extends around the heating element 220 and is spaced apart from the heating element 220. The raised rim 230 may extend around the base end 221 of the heating element 220 and be spaced apart from the base end 221 of the heating element 220. The raised rim 230 extends from the base 213a. The raised rim extends in a circumferential direction. The raised rim 230 may include a peripheral portion. The raised rim 230 of the base 213a forms a recess 212a. The recess 212a accommodates the base end 221 of the heating element 220. The recess 212a may be configured to receive the end of the article 110. The majority of the heating element 220 is not surrounded or defined by any other components. The heating region 215 is not surrounded or defined by any other components. The article 110 of Figures 19a and 19b is generally the same as the article 110 of Figure 18. The article 110 of Figures 18a and 19b may be used with the aerosol generating device 101 of Figures 19a and 19b. The heating element 220 of Figure 18 may comprise any of the heating elements illustrated in Figures 2-11. The heating element 220 may have the airflow adjustment assembly 400 of Figures 12-17.

[0262] In other embodiments (not shown), the flow adjustment assembly 400 may additionally or alternatively include at least one valve configured to adjust the cross-sectional area of ​​each opening separately, which may be useful for individually controlling each opening separately, which may be useful for providing greater control over the airflow.

[0263] In embodiments, a flow regulation assembly is provided that is configured to alternately restrict airflow through at least one first opening and at least one second opening. In such embodiments, the airflow volume remains at least substantially constant throughout use, but the outflow is shifted between different portions of the heating element 220. Thus, the active air outlet section can be shifted toward the distal end or toward the proximal end during use while maintaining air throughput. In embodiments, the collar described above is configured to achieve such an effect. In other embodiments, the flow regulation assembly comprises a piston generally corresponding to the arrangement described above with a first piston head and a second piston head, where the second piston head is spaced apart from the first piston head and is configured such that different openings can be alternately opened or closed by placing the piston head in an appropriate position within the bore 410.

[0264] The flow adjustment assembly 400 may be configured to selectively restrict airflow through the opening. The flow adjustment assembly 400 allows the available flow area of ​​the air outlet 252 to be adjusted depending on the airflow requirements of the device 101. This may help provide a more flexible device 101, where the amount or location of airflow from the heating element 220 may be controlled. Such adjustment may help provide different sensations to the user as they inhale, allowing the user to adjust the airflow according to their preferences. Moreover, the airflow may be adjusted to provide optimal airflow depending on the aerosol-generating material being used. Providing an adjustable device may also mean that only one device 101 needs to be manufactured for a variety of different uses. This may provide economies of scale and reduce manufacturing costs, as only one device 101 needs to be manufactured.

[0265] In an embodiment, the operation of the magnetic field generator 240 and the flow regulation assembly 400 are configured to operate in response to one another. In an embodiment, the operation of the magnetic field generator 240 and the flow regulation assembly 400 are configured to correspond to one another. That is, in an embodiment, the magnetic field generator 240 is configured to cause heating of one or more regions of the heating element 220 corresponding to portions of the heating element 220 through which air is directed by the flow regulation assembly 400. In an embodiment, the flow regulation assembly 400 is configured to direct air through portions of the heating element 220 corresponding to the one or more regions for which the magnetic field generator 240 is configured to cause heating. Thus, the progressively directed air flow along the heating element 220 can be aligned with the progressive heating of the heating element 220. In an embodiment, the inductor coil arrangement comprises, for example, two or more inductor coils or a movable coil to provide progressive heating.

[0266] In embodiments, the flow adjustment assembly 400 is configured to direct air through a portion of the heating element 220 that is aligned with one or more regions in which the magnetic field generator 240 is configured to cause heating. In embodiments, the flow adjustment assembly 400 is configured to direct air through a portion of the heating element 220 that is offset from one or more regions in which the magnetic field generator 240 is configured to cause heating. For example, the portion of the heating element through which the flow adjustment assembly 400 is configured to direct air may be disposed at least partially closer to the distal end of the heating element 220 from the one or more regions in which the magnetic field generator 240 is configured to cause heating.

[0267] In the embodiments described above, the heating element is an induction heating element. In embodiments, other types of heating elements, such as resistive heating, are used. The device configuration is generally described above, and therefore will not be described in detail. In such configurations, the heating assembly 201 comprises a resistive heat generator including components for heating the heating element by a resistive heating process. In this case, an electric current is applied directly to the resistive heating element, and the resulting current flow in the heating element causes the heating element to heat by Joule heating. The resistive heating element comprises a resistive material configured to generate heat when a suitable electric current passes through the resistive heating element, and the heating assembly comprises electrical contacts for supplying the electric current to the resistive material.

[0268] In an embodiment, the heating element forms a resistive heating component itself, which in an embodiment transfers heat to the heating element by, for example, conduction.

[0269] The above-described embodiments should be understood as illustrative examples of the present invention. Further embodiments of the present invention are contemplated. It should be understood that any feature described with respect to any one embodiment may be used alone or in combination with other features described, and may also be used in combination with one or more features of any other embodiment, or in any combination of any other embodiment. Moreover, equivalents and modifications not described above may be employed without departing from the scope of the present invention, as defined in the appended claims.

Claims

1. 1. An aerosol delivery device for generating an aerosol from an aerosol-generating material, comprising: a receptacle defining a heating region configured to receive at least a portion of an article comprising an aerosol-forming material; a heating element protruding into the heating region and configured to heat the heating region; Equipped with the heating element comprising an air passage having an air outlet in fluid communication with the heating region, and an airflow regulation assembly positioned to vary airflow through the air outlet; Aerosol delivery device.

2. The aerosol delivery device of claim 1 , wherein the airflow adjustment assembly is configured to vary the available airflow area through the air outlet.

3. 10. The aerosol delivery device of claim 1, wherein the air outlet comprises an air opening, and the air flow regulation assembly is configured to selectively at least restrict air flow through the air opening.

4. 4. The aerosol delivery device of claim 3, wherein the air opening is a first air opening and the air outlet comprises a second air opening.

5. 5. The aerosol delivery device of claim 4, wherein the airflow regulation assembly is configured to alternately restrict airflow through the first air opening and airflow through the second air opening.

6. The aerosol delivery device of claim 1 , wherein the air outlet comprises an array of air openings.

7. 7. The aerosol delivery device of claim 6, wherein the airflow regulation assembly comprises a barrier operable to selectively restrict airflow through at least one air opening.

8. The aerosol delivery device of claim 7 , wherein the barrier is an internal barrier within the heating element.

9. 8. The aerosol delivery device of claim 7, comprising an air inlet to the heating element, the barrier being between the air inlet and the air outlet.

10. 10. The aerosol delivery device of claim 9, wherein the air flow adjustment assembly comprises a hole in the heating element, and the barrier is movable at the hole to fluidly separate the hole into an air supply side in fluid communication with the air inlet in the heating element and a closed side in the heating element that is fluidly separated from the air inlet.

11. The aerosol delivery device of claim 10 , wherein the heating element protrudes from the receptacle at a distal end and has a free end at a proximal end.

12. The aerosol delivery device of claim 11 , wherein the air delivery side is at the distal end or the proximal end.

13. The aerosol delivery device of claim 7 , wherein the barrier is an external barrier around the heating element.

14. The aerosol delivery device of claim 13 , wherein the barrier comprises a collar around the heating element.

15. 7. The aerosol delivery device of claim 6, wherein the array of air openings is axially distributed along the heating element.

16. 16. The aerosol delivery device of claim 15, wherein at least a first air opening of the array of air openings has a different flow area than at least a second air opening of the array of air openings.

17. The aerosol delivery device of claim 1 , wherein the heating element comprises a heating material that is heatable by penetration of a fluctuating magnetic field.

18. An aerosol delivery system comprising the aerosol delivery device of claim 1 and an article comprising an aerosol-generating material.

19. an article comprising an aerosol-forming material; An aerosol delivery device for heating an aerosol-forming material, the aerosol delivery device comprising: a receptacle defining a heating region configured to receive at least a portion of an article comprising the aerosol-forming material; a heating element protruding into the heating region and configured to heat the heating region, the heating element having an air passage with an air outlet in fluid communication with the heating region; an airflow adjustment assembly arranged to vary the airflow through the air outlet; an aerosol delivery device comprising: An aerosol delivery system comprising:

20. 1. An aerosol delivery device for generating an aerosol from an aerosol-generating material, comprising: a heating element configured to be received in at least a portion of the article comprising the aerosol-forming material; a base from which the heating element projects; Equipped with the heating element comprising an air passage having an air outlet in fluid communication with an exterior surface of the heating element, and an airflow adjustment assembly positioned to vary airflow through the air outlet. Aerosol delivery device.

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