Heating assembly for aerosol generator

Abstract

A heating assembly (12) for an aerosol generator (10). The heating assembly comprises an airflow channel (14) and a heating element (38). The heating element is disposed at least partially within the airflow channel, or at least partially surrounding the airflow channel. The heating element comprises one or more through-holes (32) to allow air flowing through the airflow channel to flow through the heating element. The heating element is an induction heating element equipped with a magnetic flux concentrater. An aerosol generator, a cartridge for the aerosol generator, and an aerosol generating system comprising the aerosol generator and cartridge are also disclosed.

Description

Technical Field

[0001] The present invention relates to a heating assembly for an aerosol generating device, an aerosol generating device, a cartridge for an aerosol generating device, and an aerosol generating system comprising an aerosol generating device and a cartridge.

Background Art

[0002] It is known to provide an aerosol generating device for generating an inhalable vapor. Such a device may heat a liquid aerosol-forming substrate to a temperature at which one or more components of the liquid aerosol-forming substrate vaporize without burning the aerosol-forming substrate. The aerosol-forming substrate may be provided in liquid form in a liquid storage portion as part of a replaceable or refillable cartridge. Conventionally, a wicking element has been used to wick a liquid aerosol-forming substrate towards a heating coil.

[0003] It is desirable to have a heating assembly for an aerosol generating device with improved uptake of a liquid aerosol-forming substrate to a heating element of the heating assembly. It is desirable to have a heating assembly for an aerosol generating device with improved airflow across a heating element of the heating assembly to improve entrainment of the vaporized liquid aerosol-forming substrate.

Summary of the Invention

[0004] According to one embodiment of the present invention, a heating assembly for an aerosol generating device is provided. The heating assembly may comprise an airflow channel and a heating element. The heating element may be disposed at least partially within the airflow channel or at least partially surrounding the airflow channel. The heating element may comprise one or more through-holes to enable air flowing through the airflow channel to flow through the heating element.

[0005] According to one embodiment of the present invention, a heating assembly for an aerosol generator is provided. The heating assembly comprises an airflow channel and a heating element. The heating element is disposed at least partially within the airflow channel, or at least partially surrounding the airflow channel. The heating element has one or more through-holes to allow air flowing through the airflow channel to flow through the heating element.

[0006] Providing one or more through-holes within the heating element and directing airflow through these through-holes can improve the contact surface between the heating element and the air flowing through the airflow channels. This can improve energy efficiency during aerosol generation. This can improve the homogeneity of aerosol generation.

[0007] The airflow channel may extend along the longitudinal axis of the heated assembly, or parallel to the longitudinal axis. The airflow channel may have a circular cross-section. Alternatively, the airflow channel may have an elliptical, oblong, or rectangular cross-section.

[0008] The main extension axis of the heating element may be perpendicular to the main extension axis of the airflow channel. The main extension axis of the airflow channel may be the same as the longitudinal axis of the heated assembly. In other words, the main extension axis of the heating element may be perpendicular to the main extension axis of the airflow channel.

[0009] The heating element may at least partially surround the airflow channel. The heating element may completely surround the airflow channel.

[0010] The heating element may be disposed in direct contact with the airflow channel. The heating element may also be formed at least partially on the side wall of the airflow channel.

[0011] The air flowing through the airflow channel may come into direct contact with the heating element when it passes through one or more through-holes in the heating element.

[0012] The heat-generating element's through-hole can be centrally located within the airflow channel.

[0013] The inner diameter of the through-hole may correspond to the inner diameter of the airflow channel. Alternatively, the inner diameter of the through-hole may be smaller than the inner diameter of the airflow channel.

[0014] The cross-sectional shape of the through-hole preferably corresponds to the cross-sectional shape of the airflow channel.

[0015] The heating element may be circular. The heating element may also have an annular shape. An annular heating element is preferably arranged to surround a circular airflow channel.

[0016] The heating element may be elliptical in shape.

[0017] The heating element may be disc-shaped. It is particularly preferable that the heating element has an annular disc shape.

[0018] The heating element can be rectangular.

[0019] The heating element may be flat.

[0020] The heating element may have a thickness. The thickness may be 10 micrometers to 250 micrometers, preferably 15 micrometers to 100 micrometers, and more preferably 20 micrometers to 60 micrometers.

[0021] Each individual through-hole through the heating element may have a diameter. The diameter may be in the range of 0.5 mm to 3 mm, preferably 0.7 mm to 2 mm. If only a single through-hole is provided, the through-hole may have a diameter in the range of 0.5 mm to 6 mm, preferably 1 mm to 3 mm, more preferably 1.5 mm to 2.5 mm. The heated portion of the heating element may follow the periphery of the single through-hole.

[0022] The heating element may have a plurality of through holes arranged in a regular pattern within the heating element.

[0023] One or more through-holes may be configured as slits. The slit preferably has an extension axis orthogonal to the main extension axis of the air flow channel.

[0024] The heating element may include a heating track and preferably may consist of a heating track. The thickness of the heating track may be 2 micrometers to 500 micrometers, and more preferably 4 micrometers to 100 micrometers.

[0025] The heating element may include a serpentine heating track. The serpentine configuration can increase the overall resistance of the heating track.

[0026] The heating element may be covered by a protective layer. The protective layer may contain glass or may consist of glass.

[0027] The heating element may include a circular heating track.

[0028] The heating element may include at least two concentric heating tracks.

[0029] The heating element may contain a resistive material and preferably may consist of a resistive material. The total electrical resistance of the heating element may be 0.1 ohm to 5 ohms, preferably 0.3 ohm to 2 ohms.

[0030] The heating element may include a susceptor material and preferably may consist of a susceptor material. The heating element may be made of stainless steel. Preferably, the heating element may be made of magnetic stainless steel. The heating element may be made of AISI 430 grade stainless steel or any type of magnetic material.

[0031] The heating element may contain a metal foil and preferably may consist of a metal foil.

[0032] The heating element may have a thickness of 2 micrometers to 500 micrometers, preferably 4 micrometers to 100 micrometers.

[0033] The heating element may be configured as a removable heating element.

[0034] The heating assembly may include a heating element holder. The heating element holder may be configured to hold the heating element detachably. The heating element holder may hold the heating element by screw connections, snap-fit ​​connections, or one or more of any type of connection.

[0035] The heating element may be provided on a substrate layer. The substrate layer may include glass. The substrate layer may consist of glass.

[0036] The substrate layer may have one or more through holes. The through holes in the substrate layer may be aligned with the through holes in the heating element.

[0037] The base layer may be made from an insulating material.

[0038] The substrate layer may include a duct. The substrate layer may be configured to draw up a liquid aerosol-forming substrate to a heating element. Therefore, the substrate layer may also be configured as a wicking layer.

[0039] The substrate layer may be an electrical insulator. The substrate layer may have low thermal conductivity. The substrate layer may contain, and preferably consist of, ceramics, glass, heat-resistant polymers, silicon-based materials, preferably zirconia (zirconium oxide).

[0040] The thickness of the substrate layer may be 5 micrometers to 1000 micrometers, preferably 30 micrometers to 400 micrometers.

[0041] The heating assembly may be held within a support structure of the aerosol generator. The support structure may be configured to be removable. This may allow for replacement of the support structure after the operating period of the heater assembly of the aerosol generator. Alternatively, the support structure may be permanently fixed to the heating element.

[0042] The support structure may be connected to the heating element by different assembly methods, such as screw fastening, snap fastening, adhesive fastening, or overmolding.

[0043] The support structure may include one or more of the following: a receptacle for securing a disposable cartridge on its upper side; electrical connections for connecting the heating assembly to the controller; a power supply; and a fixing system for attaching it to the aerosol generator.

[0044] The heating element may be positioned adjacent to the magnetic flux concentrater, or it may be embedded within the magnetic flux concentrater.

[0045] The heated assembly may further include a wicking element configured to draw a liquid aerosol-forming substrate toward the heating element.

[0046] The wicking element may be disposed in direct contact with the heating element.

[0047] The arrangement of wicking elements described herein can improve thermal contact between the liquid aerosol-forming substrate and the heating element. The arrangement of wicking elements described herein can enhance the supply of the liquid aerosol-forming substrate to the heating element due to a reduction in the viscosity of the liquid aerosol-forming substrate within the wicking element. This effect is particularly pronounced when the wicking element is in contact with or abuts the heating element.

[0048] The wicking element, which is in direct contact with the heating element, may be disposed proximally and distally to the heating element. It is particularly preferable that the wicking element be disposed proximally to the heating element. It is preferable that the wicking element be disposed on the large proximal surface of the heating element. The substrate layer may be disposed on the large distal surface opposite the wicking element.

[0049] The wicking element may have one or more through-holes aligned with one or more through-holes in the heating element. This may allow air to be drawn in through the airflow channel, through the through-holes in the heating element, and through the through-holes in the wicking element.

[0050] The wicking element may be arranged to at least partially surround the heating element.

[0051] The wicking element may have an annular shape. The wicking element may have an annular disc shape.

[0052] The wicking element may cover 60% to 98% of the large surface area of ​​the heat source. The wicking element may cover 80% to 98% of the large surface area of ​​the heat source. The wicking element may cover 90% to 98% of the large surface area of ​​the heat source.

[0053] The edges of the wicking element, particularly the inner edges, may be radially distanced from the edges of the susceptor, particularly the inner edges. The distance between the wicking element and the susceptor may be 0.3 mm to 5 mm, preferably 0.5 mm to 3 mm, more preferably 0.7 mm to 1.5 mm, and most preferably 1 mm.

[0054] The wicking element does not need to cover a portion of the large proximal surface of the heat source. This uncovered region may surround a through-hole in the heat source. The remaining portion of the large proximal surface of the heat source may be covered by the wicking element. When the liquid aerosol-forming substrate is drawn up toward the heat source via the wicking element, the liquid aerosol-forming substrate can be vaporized mainly in this uncovered region.

[0055] Partial covering of the heating element by the wicking element may lead to the formation of a meniscus of liquid aerosol-forming substrate on the uncovered surface of the heating element not covered by the wicking element. This meniscus of liquid aerosol-forming substrate may be vaporized by the heating element without being obstructed by the wicking element.

[0056] The wicking element may be provided as a covering on the heating element. The wicking element may be disposed on the heating element. The wicking element may be disposed on a first side of the heating element, and the substrate layer may be disposed on a second opposite side of the heating element.

[0057] The wicking element may include, preferably, glass or ceramic material. The wicking element may also include, preferably, nonpolymer material such as cotton, Kevlar®, or any felt or spongy material capable of withstanding temperatures of at least 200°C. In a preferred embodiment, the wicking element may include, preferably, Kevlar® or cotton. These materials may be beneficial from a toxicity standpoint. These materials can easily conform to the shape of the heating element, thereby preventing a gap between the wicking element and the heating element.

[0058] The wicking element may have one or more ducts configured for capillary suction of the liquid aerosol-forming substrate toward the heating element. The heating element may have one or more ducts configured for capillary suction of the liquid aerosol-forming substrate toward the heating element. The substrate layer may have one or more ducts configured for capillary suction of the liquid aerosol-forming substrate toward the heating element. One or more ducts from the wicking element, heating element, and substrate layer may be aligned. One or more ducts from the wicking element, heating element, and substrate layer do not have to intersect with one or more through-holes from the wicking element, heating element, and substrate layer.

[0059] Ducts may be configured as a network of ducts. The terms “duct” or “ducts” may refer to capillary channels or bores. Ducts may be arranged in regular geometric patterns, such as zigzag or checkerboard patterns.

[0060] The duct may be arranged to run between through-holes of the heating element. The duct may be arranged to run between through-holes of the wicking element. The duct may be arranged to run between through-holes of the substrate layer. The duct may be arranged to supply the liquid aerosol-forming substrate to one or more through-holes of the wicking element, heating element, and substrate layer.

[0061] The wicking element may be arranged to draw up the liquid aerosol-forming substrate and form a meniscus of the liquid aerosol-forming substrate between the wicking element and the heating element.

[0062] The present invention further relates to an aerosol generator comprising a heated assembly as described herein.

[0063] The aerosol generator may be equipped with an airflow channel. The airflow channel may be a central airflow channel. The airflow channel of the aerosol generator may also be an airflow channel of the heated assembly.

[0064] The aerosol generator may be provided with an air intake. Alternatively, the cartridge described herein may be provided with an air intake. The air intake may be arranged to allow ambient air to be drawn into the airflow channel of the aerosol generator or the cartridge, respectively.

[0065] The airflow channel may have an inner diameter. The inner diameter may be 1.5 mm to 8 mm, preferably 2 mm to 6 mm, and more preferably 3 mm to 5 mm.

[0066] The aerosol generator may include a first air intake configured to draw ambient air into the central portion of the airflow channel. The aerosol generator may also include a second air intake configured to draw ambient air radially onto the heating element.

[0067] The first air intake may be located at the distal end of the aerosol generator. The second air intake may be located on the side wall of the aerosol generator. The first air intake may be fluidly connected to an airflow channel. The second air intake may be fluidly connected to an airflow channel.

[0068] The airflow path connecting the first air intake to the airflow channel, and the airflow path connecting the second air intake to the airflow channel, may merge in or near the heated assembly, preferably in or near the through-hole of the heating element of the heated assembly.

[0069] In other words, the airflow channel may have a first portion that fluidly connects a first air intake to the heating assembly, and the airflow channel may have a second portion that fluidly connects a second air intake to the heating assembly. The first portion of the airflow channel may be arranged along or parallel to the longitudinal axis of the aerosol generator. The second portion of the airflow channel may extend along or parallel to the transverse axis of the aerosol generator. The first portion of the airflow channel and the second portion of the airflow channel may merge in or near the heating element, more preferably in or near a through-hole of the heating element in the heating assembly.

[0070] The main extension axis of the first air intake may extend along the longitudinal axis of the aerosol generator, or parallel to the longitudinal axis. The main extension axis of the second air intake may extend along the transverse axis of the aerosol generator, or parallel to the transverse axis. The main extension axis of the second air intake may also be parallel to the main extension axis of the heating element.

[0071] The ambient air drawn onto the heating element through the second air intake can improve the direction of heat away from the heating element. Thus, overheating of the heating element can be avoided.

[0072] The aerosol generator may include an induction coil. The induction coil may be arranged to generate an alternating magnetic field. The induction coil may be arranged so that a heating assembly, more specifically the heating element of the heating assembly, is exposed to the alternating magnetic field. The heating element may be an induction heating element. The heating element may be heated by eddy currents induced within the heating element as a result of being exposed to the alternating magnetic field of the induction coil.

[0073] The induction heating element may include a magnetic flux centrifuge. The induction heating element may be embedded within the magnetic flux centrifuge. The magnetic flux centrifuge may be configured to concentrate an alternating magnetic field toward the heating element. Preferably, the magnetic flux centrifuge may be configured to concentrate an alternating magnetic field toward a specific region of the heating element. Such a configuration can enable localized heating of the susceptor, and therefore localized heating of the wicking element containing the aerosol-forming substrate. In other words, the magnetic flux centrifuge can enable efficient heating of the aerosol-forming substrate.

[0074] The magnetic flux centrifuge may be configured to shield the alternating magnetic field from external perturbations.

[0075] The induction coil may be made of copper, silver, gold, or any material having high electrical conductivity. The wires of the induction coil may have a cross-sectional shape. The cross-sectional shape of the wires may be circular, oval, square, or any other shape. A rectangular cross-sectional shape of the wires may be preferred. The induction coil may have two or more windings. The induction coil may have one to five windings, preferably 1.5 to 4 windings, more preferably 1.7 to 3.5 windings, and most preferably 2.5 windings. The induction coil may have two windings. The induction coil may have three windings.

[0076] The flux concentrate may be made of a material having a high relative permeability exceeding 1 MHz and a low coercivity. The flux concentrate may be made of ferrite, preferably nickel-zinc ferrite. The flux concentrate may have a U-shape that rotates around its central axis. The induction coil may be disposed within the U-shaped flux concentrate. The flux concentrate may be located at the center of the induction coil. The flux concentrate may have a rod shape, or a pin shape, or a tip shape, or any other shape. The flux concentrate may consist of a substantially closed loop with a flat or tapered edge to increase the magnetic flux strength. The flux concentrate may have a hole in its center along its long axis. This may be beneficial for providing an air connection from the airflow channel to the smoke extraction sensor.

[0077] A gap may be provided between the heating element and the induction coil of the heating assembly. The gap may be 0.1 mm to 2 mm, preferably 0.3 mm to 1.5 mm, and more preferably 0.4 mm to 1.1 mm. Such a gap can ensure good energy transfer from the induction coil to the heating element. This gap can ensure an electrical quality factor of 5 to 10.

[0078] The present invention is a cartridge for an aerosol generator, wherein the cartridge is A liquid storage portion for holding a liquid aerosol-forming substrate, and Equipped with wicking elements, The wicking element may be fluidly connected to a liquid storage portion to enable the suction of a liquid aerosol-forming substrate, and the wicking element may be configured as described herein, further relating to a cartridge.

[0079] The present invention is a cartridge for an aerosol generator, wherein the cartridge is A liquid storage portion for holding a liquid aerosol-forming substrate, and Equipped with wicking elements, The wicking element is fluidly connected to the liquid storage portion to enable the suction of a liquid aerosol-forming substrate, and the wicking element is configured as described herein, further relating to a cartridge.

[0080] The wicking element is part of the cartridge and preferably comes into contact with the heating assembly of the aerosol generator when the cartridge is attached to the aerosol generator. The wicking element is then configured to draw the liquid aerosol-forming substrate up to the heating element of the heating assembly.

[0081] Alternatively, the wicking element may be an integrated part of the heating assembly of the aerosol generator. As a further alternative, the heating assembly containing the wicking element may be part of the cartridge.

[0082] The cartridge may include a valve connected to the liquid storage portion. The valve may be configured as a one-way valve. The valve may be configured to allow wicking of the liquid aerosol-forming substrate from the liquid storage portion to the wicking element when the liquid storage portion is fluidly connected to the wicking element.

[0083] The aerosol-forming substrate may contain up to 3 milliliters of liquid, preferably up to 2 milliliters. The cartridge may be attached to the susceptor body by screwing, snapping, or any type of mounting technique.

[0084] The cartridge may comprise a first liquid storage portion. The first liquid storage portion may include a first liquid aerosol-forming substrate. The cartridge may further comprise a second liquid storage portion. The second liquid storage portion may include a second liquid aerosol-forming substrate. The first liquid aerosol-forming substrate may be different from the second liquid aerosol-forming substrate.

[0085] Providing cartridges having different liquid aerosol-forming substrates may enable adaptability of the aerosols produced by the aerosol generator. Exemplarily, the first aerosol-forming substrate may contain nicotine, and the second aerosol-forming substrate may contain a flavoring agent. If a modified aerosol is desired, it may suffice to replace either the first or second aerosol-forming substrate, respectively. Furthermore, different aerosol-forming substrates may have one or more of the following characteristics: different viscosity, different wicking properties, and different vaporization properties. Therefore, mixing these different aerosol-forming substrates and storing, drawing, and vaporizing them together may be undesirable. In this invention, it may be possible to improve one or more of the storage, drawing, and vaporization of individual aerosol-forming substrates.

[0086] The first liquid storage section may be spatially separated from the second liquid storage section.

[0087] The first liquid aerosol-forming substrate may contain nicotine.

[0088] The first liquid aerosol-forming substrate may contain one or more of the following: free base nicotine, nicotine salts, mixtures of nicotine salts, mixtures of free base nicotine, and one or more nicotine salts.

[0089] The second liquid aerosol-forming substrate may contain a flavoring agent.

[0090] The second liquid aerosol-forming substrate may contain a solvent or a mixture of a solvent and a flavoring agent.

[0091] The first liquid storage portion may have a volume different from that of the second liquid storage portion for holding the second liquid aerosol-forming substrate, in order to hold the first liquid aerosol-forming substrate.

[0092] The cartridge may further comprise a first liquid storage section and a first wicking element fluidly connected to it.

[0093] The cartridge may further comprise a second liquid storage section and a second wicking element fluidly connected to it.

[0094] The first wicking element may include a first delivery portion configured to deliver a first liquid aerosol-forming substrate to a heating element. The second wicking element may include a second delivery portion configured to deliver a second liquid aerosol-forming substrate to a heating element.

[0095] One or both of the main surface areas of the first delivery portion may be planar, and the main surface area of ​​the second delivery portion may also be planar.

[0096] The main surface area of ​​the first delivery portion may differ from the main surface area of ​​the second delivery portion.

[0097] The first wicking element may have a partially annular ring shape.

[0098] The second wicking element may have a partially annular ring shape.

[0099] The first wicking element may be arranged to be fluidly separated from the second wicking element.

[0100] The cartridge may also include a central airflow channel.

[0101] The first wicking element may be fluid-connected to the central airflow channel. The second wicking element may be fluid-connected to the central airflow channel.

[0102] The central airflow channel may comprise a separation wall that separates the central airflow channel from a first portion of the central airflow channel, along the entire length of the central airflow channel or along a partial length of the central airflow channel, and a fluid-separated second portion of the central airflow channel.

[0103] The first wicking element may be fluidly connected to the first portion of the central airflow channel, and the second wicking element may be fluidly connected to the second portion of the central airflow channel.

[0104] The cross-sectional surface area of ​​the first part of the central airflow channel may differ from the cross-sectional surface area of ​​the second part of the central airflow channel.

[0105] The separation wall may extend along the central longitudinal axis of the cartridge.

[0106] The central airflow channel may extend along the central longitudinal axis of the cartridge.

[0107] The first liquid storage section may be configured to be removable from the cartridge.

[0108] The second liquid storage section may be configured to be removable from the cartridge.

[0109] The present invention further relates to an aerosol generating system comprising an aerosol generating device described herein and a cartridge described herein.

[0110] Providing a replaceable cartridge that holds an aerosol generator and a liquid aerosol-forming substrate may improve sustainability by separating the replaceable liquid aerosol-forming substrate from the components of the aerosol generator. The components of the aerosol generator can be used for extended periods.

[0111] As used herein, the terms “proximal,” “distal,” “downstream,” and “upstream” are used to describe the relative position of a component or part of a component of an aerosol generator with respect to the direction in which the user inhales the aerosol generator during use.

[0112] An aerosol generator may have a mouth end through which, during use, aerosols exit the aerosol generator and are delivered to the user. The mouth end may also be called the proximal end. During use, the user inhales the proximal or mouth end of the aerosol generator to inhale the aerosol generated by the aerosol generator. Alternatively, the user may inhale directly an aerosol-generating article inserted into an opening at the proximal end of the aerosol generator. The opening at the proximal end may be a cavity opening. The cavity may be configured to receive an aerosol-generating article. The aerosol generator has a distal end opposite to the proximal or mouth end. The proximal or mouth end of the aerosol generator may also be called the downstream end, and the distal end of the aerosol generator may also be called the upstream end. Components of the aerosol generator, or parts of components, may be described as being upstream or downstream of each other based on their relative positions between the proximal, downstream, or mouth end of the aerosol generator and the distal or upstream end of the aerosol generator.

[0113] As used herein, “aerosol generator” refers to a device that generates an aerosol by interacting with an aerosol-forming substrate. The aerosol-forming substrate may be part of an aerosol-generating article, for example, part of a smoking article. The aerosol generator may be a smoking device that interacts with the aerosol-forming substrate of an aerosol-generating article to generate an aerosol that can be directly inhaled into the user's lungs through the user's mouth. The aerosol generator may be a holder. The device may be an electrically heated smoking device. The aerosol generator may comprise a housing, an electrical circuit, a power supply, a heating chamber, and a heating element.

[0114] As used herein in relation to the present invention, the term “smoking” in relation to apparatus, articles, systems, substrates, or otherwise does not refer to conventional smoking in which the aerosol-forming substrate is completely or at least partially burned. The aerosol-generating apparatus of the present invention is configured to heat the aerosol-forming substrate to a temperature below the combustion temperature of the aerosol-forming substrate, but above the temperature at which one or more volatile compounds of the aerosol-forming substrate are released, in order to form an inhalable aerosol.

[0115] The aerosol generator may include an electrical circuit. The electrical circuit may include a microprocessor, which may be a programmable microprocessor. The microprocessor may be part of a controller. The electrical circuit may include further electronic components. The electrical circuit may be configured to regulate the supply of power to a heating element. Power may be supplied to the heating element continuously following the startup of the aerosol generator, or intermittently, such as with each smoke extraction. Power may be supplied to the heating element in the form of current pulses. The electrical circuit may be configured to monitor the electrical resistance of the heating element and, preferably, control the supply of power to the heating element in accordance with the electrical resistance of the heating element.

[0116] An aerosol generator may have a power source, typically a battery, within its main body. In one embodiment, the power source is a lithium-ion battery. Alternatively, the power source may be a nickel-metal hydride battery, a nickel-cadmium battery, or a lithium-based battery (e.g., a lithium-cobalt battery, lithium iron phosphate, lithium titanate, or lithium polymer battery). Alternatively, the power source may be another form of charge storage device, such as a capacitor. The power source may require recharging and may have a capacity that allows for the storage of sufficient energy for one or more use experiences. For example, the power source may have a capacity sufficient to continuously generate aerosols for a period of about six minutes, or for periods of multiples of six minutes. In another embodiment, the power source may have a capacity sufficient to provide a predetermined number of fume extractions or discontinuous activation of a heating element.

[0117] The cavity of the aerosol generator may have an open end into which an aerosol generating article is inserted. The open end may be the proximal end. The cavity may have a closed end opposite the open end. The closed end may be the base of the cavity. The closed end may be closed except for providing an air opening located within the base. The base of the cavity may be flat. The base of the cavity may be circular. The base of the cavity may be located upstream of the cavity. The open end may be located downstream of the cavity. The cavity may have an elongated extension. The cavity may have a longitudinal axis. The longitudinal axis may be a direction extending between the open end and the closed end along the longitudinal axis. The longitudinal axis of the cavity may be parallel to the longitudinal axis of the aerosol generator.

[0118] The cavity may be configured as a heating chamber. The cavity may have a cylindrical shape. The cavity may have a hollow cylindrical shape. The cavity may have a shape corresponding to the shape of the aerosol-generating article received inside the cavity. The cavity may have a circular cross-section. The cavity may have an elliptical or rectangular cross-section. The cavity may have an inner diameter corresponding to the outer diameter of the aerosol-generating article.

[0119] The airflow channel may extend through a cavity. Ambient air may be drawn through the airflow channel into the aerosol generator, into the cavity, and toward the user. Downstream of the cavity, a mouthpiece may be provided, or the user may directly inhale the aerosol generating article. The airflow channel may extend through the mouthpiece. The heating assembly is preferably provided within or adjacent to the airflow channel as described herein.

[0120] In any aspect of this disclosure, the heating element may include an electrically resistive material. Suitable electrically resistive materials include, but are not limited to, semiconductors such as doped ceramics, "conductive" ceramics (e.g., molybdenum disilide), carbon, graphite, metals, alloys, and composite materials made of ceramic and metallic materials. Such composite materials may include doped ceramics or undoped ceramics. An example of a suitable doped ceramic is doped silicon carbide. Examples of suitable metals include titanium, zirconium, tantalum platinum, gold, and silver. Examples of suitable metallic alloys include stainless steel, nickel-containing, cobalt-containing, chromium-containing, aluminum-containing, titanium-containing, zirconium-containing, hafnium-containing, niobium-containing, molybdenum-containing, tantalum-containing, tungsten-containing, tin-containing, gallium-containing, manganese-containing, gold-containing, and iron-containing alloys, as well as nickel, iron, cobalt, stainless steel-based superalloys, Timetal®, and iron-manganese-aluminum alloys. In composite materials, the electrical resistive material may be embedded in, sealed in, or coated with an insulating material, depending on the required energy transfer dynamics and external physicochemical properties, or vice versa.

[0121] As described, in any aspect of the present disclosure, a heating element may be part of an aerosol generator. The aerosol generator may comprise an internal heating element, an external heating element, or both an internal and an external heating element, where “internal” and “external” refer to the aerosol-forming substrate. The internal heating element may take any suitable form. In one such embodiment, an electrically resistive heating element may be formed using a metal having a clear relationship between temperature and resistivity. In such an exemplary device, the metal may be formed as a track on a suitable insulating material such as a ceramic material and then sandwiched between other insulating materials such as glass. The heater thus formed may be used both for heating the heating element in operation and for monitoring its temperature.

[0122] As an alternative to electrically resistive heating elements, heating elements may be configured as inductive heating elements. Inductive heating elements may comprise an induction coil and a susceptor. The heating elements described herein may also be susceptors. Generally, a susceptor is a material that has the ability to generate heat when penetrated by an alternating magnetic field. When located within an alternating magnetic field, if the susceptor is conductive, typically, eddy currents are induced by the alternating magnetic field. If the susceptor is magnetic, typically, another effect that contributes to heating is generally called hysteresis loss. Hysteresis loss arises primarily from the movement of magnetic domain blocks within the susceptor, because their magnetic orientations align with the alternating inductive magnetic fields. Another effect that contributes to hysteresis loss is when magnetic domains expand or contract within the susceptor. Generally, all these changes occurring within a susceptor at or below the nanoscale generate heat within the susceptor and are therefore called "hysteresis loss." Therefore, if the susceptor is both magnetic and conductive, both hysteresis loss and eddy current generation will contribute to the heating of the susceptor. If the susceptor is magnetic but not conductive, hysteresis loss will be the only means by which the susceptor will be heated when penetrated by an alternating magnetic field. According to the present invention, the susceptor may be conductive or magnetic, or both conductive and magnetic. An alternating magnetic field generated by one or more induction coils heats the susceptor, which then transfers heat to the aerosol-forming substrate, thereby forming an aerosol. Heat transfer may be mainly by conduction. Such heat transfer is best when the susceptor is in close thermal contact with the aerosol-forming substrate.

[0123] As used herein, the term “aerosol-generating article” refers to an article comprising an aerosol-forming substrate having the ability to release volatile compounds capable of forming aerosols. For example, an aerosol-generating article may be a smoking article that generates an aerosol that can be directly inhaled into the user's lungs through the user’s mouth. An aerosol-generating article may be disposable.

[0124] As used herein, the term “aerosol-forming substrate” refers to a substrate having the ability to release one or more volatile compounds that can form aerosols. Such volatile compounds may be released by heating the aerosol-forming substrate. Conveniently, the aerosol-forming substrate may be part of an aerosol-generating article or a smoking article. [Examples]

[0125] A non-exclusive list of non-limiting embodiments is provided below. One or more features of these embodiments may be combined with one or more features of other embodiments, forms, or aspects described herein.

[0126] Example 1. A heated assembly for an aerosol generator, wherein the heated assembly is Airflow channels, and Equipped with a heating element, A heating assembly in which a heating element is disposed at least partially within or at least partially surrounding an airflow channel, and the heating element has one or more through holes to allow air flowing through the airflow channel to flow through the heating element. Example 2. The heating assembly according to Example 1, wherein the main extension axis of the heating element is perpendicular to the main extension axis of the airflow channel. Example 3. A heating assembly according to any one of Examples 1 to 2, wherein the through-hole for the heating element is located in the center of the airflow channel. Example 4. A heating assembly according to any one of Examples 1 to 3, wherein the heating element is circular. Example 5. A heating assembly according to any one of Examples 1 to 4, wherein the heating element is disc-shaped. Example 6. A heating assembly according to any of Examples 1 to 5, wherein the heating element is rectangular. Example 7. A heating assembly according to any of Examples 1 to 6, wherein the heating element is flat. Example 8. A heating assembly according to any one of Examples 1 to 7, wherein the heating element has a plurality of through holes arranged in a regular pattern within the heating element. Example 9. A heated assembly according to any one of Examples 1 to 8, wherein one or more through holes are configured as slits. Example 10. A heated assembly according to any one of Examples 1 to 9, wherein the heating element comprises a heating track, preferably consisting of a heating track, and preferably the thickness of the heating track is 2 micrometers to 500 micrometers, more preferably 4 micrometers to 100 micrometers. Example 11. A heating assembly according to any one of Examples 1 to 10, wherein the heating element includes a meandering heating track. Example 12. A heating assembly according to any one of Examples 1 to 11, wherein the heating element comprises at least two concentric heating tracks. Example 13. A heating assembly according to any one of Examples 1 to 12, wherein the heating element includes, and preferably consists of, a susceptor material. Example 14. A heating assembly according to any one of Examples 1 to 13, wherein the heating element includes, and preferably consists of, a resistant material. Example 15. A heating assembly according to any one of Examples 1 to 14, wherein the heating element is configured as a removable heating element. Example 16. A heating assembly according to any one of Examples 1 to 15, wherein a heating element is disposed on a base layer, and preferably the protective layer includes glass, and preferably the protective layer is made of glass. Example 17. A heating assembly according to any one of Examples 1 to 16, wherein the heating element is disposed adjacent to the magnetic flux concentrater, preferably embedded within the magnetic flux concentrater. Example 18. The heating assembly according to any one of Examples 1 to 17, further comprising a wicking element configured to draw a liquid aerosol-forming substrate toward a heating element. Example 19. The heated assembly according to Example 18, wherein the wicking element is arranged in direct contact with the heating element. Example 20. The heated assembly according to Example 19, wherein a wicking element that is in direct contact with the heating element is disposed proximal or distal to the heating element. Example 21. A heated assembly according to any one of Examples 18 to 20, wherein the wicking element has one or more through holes aligned with one or more through holes of the heating element. Example 22. A heated assembly according to any one of Examples 18 to 21, wherein the wicking element is arranged to at least partially surround the heating element. Example 23. A heated assembly according to any one of Examples 18 to 22, wherein the wicking element has an annular shape. Example 24. A heated assembly according to any one of Examples 18 to 23, wherein the wicking element is provided as a coating on the heating element, the wicking element is preferably disposed on the heating element, more preferably disposed on a first side surface of the heating element, and the substrate layer is disposed on a second opposite side surface of the heating element. Example 25. A heated assembly according to any of Examples 18 to 24, wherein the wicking element includes, preferably consists of, glass or ceramic material. Example 26. An aerosol generator comprising a heated assembly described in any of Examples 1 to 25. Example 27. The aerosol generator according to Example 26, wherein the aerosol generator comprises a first air intake configured to draw ambient air into the central portion of the airflow channel, and the aerosol generator comprises a second air intake configured to draw ambient air radially onto the heating element. Example 28. A cartridge for an aerosol generator, the cartridge is A liquid storage portion for holding a liquid aerosol-forming substrate, and Equipped with wicking elements, A cartridge in which a wicking element is fluidly connected to a liquid storage portion to enable wicking of a liquid aerosol forming substrate, and the wicking element is configured according to any of Examples 18 to 25. Example 29. An aerosol generating system comprising the aerosol generating device described in Example 26 or 27 and the cartridge described in Example 28.

[0127] Features described in relation to one embodiment may be equally applicable to other embodiments of the present invention.

[0128] The present invention will be further described with reference to the attached drawings, for illustrative purposes only. [Brief explanation of the drawing]

[0129] [Figure 1] Figure 1 shows a cross-sectional side view of the aerosol generator. [Figure 2] Figure 2 shows a cross-sectional side view of the heated assembly of the aerosol generator. [Figure 3] Figure 3 shows a top view of one embodiment of the heated assembly. [Figure 4] Figure 4 shows a top view of one embodiment of the heated assembly. [Figure 5] Figure 5 shows a top view of one embodiment of the heated assembly. [Figure 6] Figure 6 shows a cross-sectional side view of the embodiment of the heated assembly shown in Figure 5. [Figure 7] Figure 7 shows a top view of one embodiment of the heated assembly. [Figure 8] Figure 8 shows a cross-sectional exploded side view of one embodiment of the aerosol generator, cartridge, and heating assembly. [Figure 9]Figure 9 shows the elements of Figure 8 in their assembled state. [Figure 10] Figure 10 shows the vaporization region in Figure 9 in more detail. [Figures 11A-11F] Figures 11A to 11F show several embodiments of induction coils and magnetic flux centrifuges. [Figure 12A-12C] Figures 12A to 12C show several embodiments of the resistance heating element. [Figure 13] Figure 13 shows the support structure of the heated assembly. [Figure 14] Figure 14 shows the operation of the heated assembly in the embodiment shown in Figure 13. [Figure 15] Figure 15 shows the individual components of the cartridge, the support structure that holds the heated assembly, and the main body of the aerosol generator. [Modes for carrying out the invention]

[0130] Figure 1 shows an aerosol generator 10. The aerosol generator 10 comprises a heating assembly 12. The heating assembly 12 is disposed in direct contact with an airflow channel 14. The airflow channel 14 is fluidly connected to an air intake 16. The air intake 16 is located on the side wall of the aerosol generator 10. The air intake 16 is located upstream of the heating assembly 12. The air intake 16 allows ambient air to be drawn into the aerosol generator 10 from the side and directed to the heating assembly 12. As described herein, the air then flows through the heating element 38 of the heating assembly 12, through the airflow channel 14, and out of the air outlet 18. The airflow channel 14 is also fluidly connected to the air outlet 18. The air outlet 18 is located downstream and proximal to the heating assembly 12.

[0131] The aerosol generator 10 further comprises a liquid storage section 20 having a liquid aerosol-forming substrate. The liquid storage section 20 is fluidly connected to a heating assembly 12. The liquid aerosol-forming substrate is drawn up toward the heating assembly 12 and vaporized by the heating assembly. The vaporized aerosol-forming substrate is entrained in the air flowing through the heating assembly 12. Further downstream of the airflow channel 14, the air is cooled so that droplets of the aerosol-forming substrate form in the airflow, thereby generating an inhalable aerosol. The liquid storage section 20 is part of a replaceable cartridge 22. The cartridge 22 can be replaced after the liquid aerosol-forming substrate is depleted. Preferably, the cartridge 22 comprises only the liquid storage section 20 and the airflow channel 14.

[0132] The aerosol generator 10 further comprises a main body 24. A cartridge 22 is detachably attached to the main body 24 of the aerosol generator 10. The main body 24 comprises a heating assembly 12. The main body 24 further comprises a power supply 26 in the form of a battery for supplying power to the heating assembly 12. A controller 28 is provided to control the operation of the aerosol generator 10, in particular to control the supply of electrical energy from the power supply 26 to the heating assembly 12. A smoke inhalation sensor 30 is provided for detecting user smoke inhalation. In response to smoke inhalation detection, the controller 28 controls the supply of electrical energy from the power supply 26 to the heating assembly 12 to vaporize the liquid aerosol-forming substrate from the liquid storage section 20.

[0133] Figure 2 shows the heated assembly 12 in more detail. More specifically, through holes 32 are provided within the heated assembly 12, allowing airflow 34 to pass through the heated assembly 12. Air flows from distal to proximal along the longitudinal axis of the aerosol generator 10 through the heated assembly 12. Simultaneously, the liquid aerosol forming substrate 36 is drawn laterally from the liquid storage section 20 toward the heated assembly 12.

[0134] Figure 3 shows a top view of an embodiment of the heating assembly 12. In this embodiment, the heating assembly 12 is configured as an inductor 40 ion heating assembly 12. The heating assembly 12 includes a heating element 38. The heating element 38 is configured as a susceptor. The heating element 38 is heated by being exposed to an alternating magnetic field. The alternating magnetic field is generated by an induction coil 54 of the aerosol generator 10. The induction coil 54 is arranged to at least partially surround the heating element 38. As shown in Figure 3, instead of a single through hole 32 as shown in Figure 2, multiple through holes 32 are provided in this embodiment.

[0135] A duct 40 is provided within the substrate layer 42 of the heating element 38 to supply the liquid aerosol-forming substrate to the heating element 38. The substrate layer 42 of the heating assembly 12 is preferably made of glass. The substrate layer 42 ensures the dimensional stability of the heating assembly 12. Furthermore, the substrate layer 42 allows for the formation of the duct 40 within the substrate layer 42, and thus can act as a wicking element 46. The duct 40 within the substrate layer 42 extends into the susceptor, allowing the liquid aerosol-forming substrate to be drawn up from the liquid storage portion 20 toward the heating element 38. The duct 40 has a lateral extension for drawing the liquid aerosol-forming substrate out from the liquid storage portion 20 toward the through-hole 32 of the heating element 38. The liquid aerosol-forming substrate is vaporized by the heating element 38 around the through-hole 32. Air flowing through the through-hole 32 can carry the vaporized aerosol-forming substrate and form an aerosol downstream. The substrate layer 42 and the duct 40 may have a contact region 44 in which the substrate layer 42 and the duct 40 are in contact with the liquid storage portion 20. The contact region 44 is laterally separated from the heating element 38. In the region of the contact region 44, a valve may be provided to supply liquid aerosol-forming substrate to the duct 40 only when the liquid aerosol-forming substrate in the duct 40 is depleted and negative pressure is generated in the duct 40. This can prevent leakage from the liquid aerosol-forming substrate.

[0136] Figure 4 shows a top view of a further embodiment of the heated assembly 12. This embodiment shares many similarities with the embodiment shown in Figure 3. However, the through-hole 32 in this embodiment is configured as a slit. In the embodiment shown in Figure 3, the through-hole 32 has a circular cross-section. As a result, the duct 40 has a U-shaped configuration that allows for the supply of liquid aerosol-forming substrate from the liquid storage portion 20 to the slip-shaped through-hole 32.

[0137] Figure 5 shows a top view of a further embodiment of the heating assembly 12. In this embodiment, a separate wicking element 46 is covered on the heating element 38. The wicking element 46 is covered on a large surface proximal or downstream of the heating element 38. The substrate layer 42 is disposed on a large distal surface opposite the heating element 38 (similar to the embodiments shown in Figures 3 and 4). However, the wicking element 46 does not extend laterally toward the liquid storage portion 20. Furthermore, the liquid aerosol-forming substrate is drawn out from the liquid storage portion 20 toward the wicking element 46 and heating element 38 by a duct 40 within the substrate layer 42. Similar to the embodiments described above, through-holes 32 are located within the substrate layer 42 and the heating element 38 to allow airflow through the heating assembly 12. These through-holes 32 also extend through the wicking element 46. The through-holes 32 of the substrate layer 42, the heating element 38, and the wicking element 46 are aligned with each other.

[0138] Figure 6 shows a cross-sectional view of an embodiment of the heated assembly 12 of Figure 5. This figure clearly shows the alignment of the through-holes 32 within the substrate layer 42, the heating element 38, and the wicking element 46. Furthermore, it is shown that the liquid aerosol-forming substrate is supplied laterally from the liquid storage section 20 to the wicking element 46 via the duct 40 within the substrate layer 42.

[0139] Figure 7 shows a top view of an embodiment of the heated assembly 12. More specifically, it illustrates the vaporization of the liquid aerosol-forming substrate when the wicking element 46 is disposed on the heating element 38. A single through-hole is shown in the heating element 38. This may apply to embodiments in which the heating element 38 has only a single through-hole 32, or to embodiments in which it has multiple through-holes 32 (in which case the operating principle of the single through-hole 32 is shown in Figure 7). The heating element 38 surrounds the through-hole 32. The heating element 38 may have an annular shape. The wicking element 46 is disposed on top of the heating element 38. The wicking element 46 may also have an annular shape. However, naturally, the inner diameter of the through-hole 32 of the heating element 38 is smaller than the inner diameter of the through-hole 32 of the wicking element 46. As a result, an uncovered region 48 of the heating element 38 is formed where the wicking element 46 is not present. The liquid aerosol-forming substrate, drawn up toward the heating element 38 by the wicking element 46, forms a meniscus of liquid aerosol-forming substrate in the uncovered region 48. The heating of the heating element 38 vaporizes the liquid aerosol-forming substrate in the uncovered region 48 so as not to hinder the vaporized aerosol-forming substrate from being carried into the airflow 34 through the through-hole 32 by the wicking element 46. The temperature of the heating element 38 can be highest around the through-hole 32, thereby vaporizing the liquid aerosol-forming substrate.

[0140] Figure 8 shows an exploded cross-sectional side view of one embodiment of the aerosol generator 10, cartridge 22, and heating assembly 12. In this embodiment, the heating element 38 is configured to be removable as part of the susceptor body 50. The heating element 38 (and preferably a substrate layer 42, not shown in Figure 8) is held by a susceptor holder 52. The susceptor body 50 further comprises an air intake 16. The susceptor body 50 is sandwiched between the cartridge 22 and the body 24 of the aerosol generator 10.

[0141] The main body 24 of the aerosol generator 10 includes an induction coil 54 that is at least partially surrounded by a magnetic flux concentrater 56. In this embodiment, the magnetic flux concentrater 56 has a U-shape to concentrate the alternating magnetic field generated by the induction coil 54 toward the heating element 38.

[0142] The wicking element 46 is disposed as part of the cartridge 22. The wicking element 46 is fluidly connected to the liquid storage portion 20 of the cartridge 22. In the assembled state (as will be considered with reference to Figure 9 below), the wicking element 46 is in contact with the heating element 38 to supply the liquid aerosol-forming substrate from the liquid storage portion 20 to the heating element 38.

[0143] Figure 9 shows the assembled elements of Figure 8. In particular, Figure 9 shows how ambient air is drawn into the aerosol generator 10 through the air intake 16. The air passes over the heating element 38 and flows through the through-hole 32 of the heated assembly 12. Figure 9 further shows the vaporization region 60 in which the meniscus 62 of the liquid aerosol-forming substrate (shown in more detail below in Figure 10) within the uncovered region 48 and next to the wicking element 46 is vaporized.

[0144] Figure 10 shows the vaporization region 60 of Figure 9 in more detail. The liquid aerosol-forming substrate is drawn up by the wicking element 46 toward the uncovered region 48 of the heating element 38. As a result, a meniscus 62 of the liquid aerosol-forming substrate is formed. This liquid aerosol-forming substrate is then vaporized by heating of the heating element 38, as indicated by reference numeral 64.

[0145] Figure 11 shows several embodiments of the induction coil 54 and the flux concentrater 56. Figure 11A shows the induction coil 54 having a circular cross-sectional shape. Alternative rectangular cross-sectional shapes of the induction coil 54 are shown in Figures 11B-11F. Figures 11A-11C show the flux concentrater 56 having a U-shape. Figure 11D shows the flux concentrater 56 with a central pin shape. Figures 11E and 11F show the flux concentrater 56 that essentially surrounds the induction coil 54 away from the proximal opening.

[0146] Figures 12A to 12C show several embodiments of the resistance heating element 38. Figure 12A shows an embodiment of the heating element 38 in which the heating element 38 is configured as a resistance heating track. The resistance heating track has a circular shape surrounding the through hole 32. The resistance heating track is disposed on the substrate layer 42. Figure 12B shows an embodiment of the heating element 38 in which the heating element 38 is configured as a resistance heating track having a meandering shape. Figure 12C shows an embodiment of the heating element 38 in which the heating element 38 is configured as a resistance heating track having two concentric heating tracks.

[0147] Figure 13 shows a support structure 66 for the heating assembly 12. This support structure 66 is useful when the heating element 38 is configured as a removable component sandwiched between the cartridge 22 and the body 24 of the aerosol generator 10. The support structure 66 includes a cartridge container 68 that allows the cartridge 22 to be attached to the support structure 66. The heating assembly 12 is also held by the support structure 66. The cartridge 22 can be attached to the proximal portion of the support structure 66. Proximal to the heater assembly, the support structure 66 includes a connecting portion 70. The connecting portion 70 is configured to connect the support structure 66 to the body 24 of the aerosol generator 10.

[0148] Figure 14 shows the operation of the heating assembly 12 in the embodiment of Figure 13. The liquid aerosol-forming substrate is drawn up toward the heating element 38. The heating element 38 is held by the support structure 66. The meniscus of liquid aerosol-forming substrate formed in the uncovered region 48 of the heating element 38 is vaporized and entrained in the airflow passing through the heating assembly 12. In this embodiment, the airflow is illustrated to come from the proximal direction instead of the lateral airflow as shown in the embodiments of Figures 8 and 9.

[0149] Figure 15 shows the individual components of the cartridge 22, the support structure 66 that holds the heating assembly 12, and the main body 24 of the aerosol generator 10. The support structure 66 allows the heating assembly 12 to be removed and replaced. Furthermore, the support structure 66 allows the cartridge 22 to be removably installed. The cartridge 22 is preferably replaced after the liquid aerosol-forming substrate held in the liquid storage portion 20 of the cartridge 22 is depleted.

Claims

1. A heating assembly for an aerosol generator, wherein the heating assembly is Airflow channels and Heating element and Equipped with, The heating element is disposed at least partially within the airflow channel, or at least partially surrounding the airflow channel, and the heating element has one or more through holes to allow air flowing through the airflow channel to flow through the heating element, and the heating element is an induction heating element equipped with a magnetic flux concentrater. Heat-assembled product.

2. The heated assembly according to claim 1, wherein the main extension axis of the heating element is perpendicular to the main extension axis of the airflow channel.

3. The heating assembly according to any one of claims 1 to 2, wherein the heating element is circular.

4. The heating assembly according to any one of claims 1 to 3, wherein the heating element is disc-shaped.

5. The heating assembly according to any one of claims 1 to 4, wherein the heating element comprises a plurality of through holes arranged in a regular pattern within the heating element.

6. The heated assembly according to any one of claims 1 to 5, wherein the one or more through holes are configured as slits.

7. The heating assembly according to any one of claims 1 to 6, wherein the heating element includes, and preferably consists of, a susceptor material.

8. The heating assembly according to any one of claims 1 to 7, further comprising a wicking element configured to pull a liquid aerosol forming substrate toward the heating element.

9. The heated assembly according to claim 8, wherein the wicking element has one or more through holes that are aligned with the one or more through holes of the heating element.

10. The heated assembly according to claim 8 or 9, wherein the wicking element has an annular shape.

11. The heated assembly according to any one of claims 8 to 10, wherein the wicking element is provided as a covering on the heating element, preferably the wicking element is disposed on the heating element, more preferably the wicking element is disposed on a first side surface of the heating element, and the substrate layer is disposed on a second opposite side of the heating element.

12. An aerosol generating device comprising a heated assembly according to any one of claims 1 to 11.

13. The aerosol generator according to claim 12, wherein the aerosol generator comprises a first air intake configured to draw ambient air into the central portion of the airflow channel, and the aerosol generator comprises a second air intake configured to draw ambient air radially onto the heating element.

14. A cartridge for an aerosol generator, wherein the cartridge is A liquid storage section for holding the liquid aerosol forming substrate, Wicking elements, Equipped with, The wicking element is fluidly connected to the liquid storage portion to enable wicking of the liquid aerosol forming substrate, and the wicking element is configured according to any one of claims 8 to 11. cartridge.

15. An aerosol generating system comprising an aerosol generating device according to claim 12 or 13 and a cartridge according to claim 14.

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