Aerosol-generating device with heat conduction

Abstract

An aerosol-generating device (100) for use with an aerosol-generating article is provided. The aerosol-generating device (100) comprises a housing (110). The housing (110) comprises a recess (111) for receiving an aerosol-generating article. The housing (110) comprises a heater assembly (112) configured to heat the aerosol-generating article when received in the recess (111). The housing (110) comprises a heating wall (113) comprising the heater assembly (112). The heating wall (113) is movable relative to the recess (111) between a closed position in which the recess (111) is substantially closed by the heating wall (113) and an open position allowing access to an interior of the recess (111). The device (100) further comprises at least one thermally conductive element (110) provided on an inner wall of the recess (111). The at least one thermally conductive element (110) is in contact with the heater assembly (112) when the heating wall (113) is in the closed position.

Description

Technical Field

[0001] This disclosure relates to an aerosol generating apparatus for use with an aerosol generating article. In particular, this disclosure relates to an aerosol generating apparatus comprising a housing and at least one heat-conducting element. This disclosure also relates to an aerosol generating system comprising an aerosol generating apparatus and an aerosol generating article configured for use with the aerosol generating apparatus. Background Technology

[0002] Aerosol-generating articles, such as those in which an aerosol-generating matrix containing a tobacco matrix is ​​heated rather than burned, are known in the art. In heated aerosol-generating articles, aerosols are generated by heating the aerosol-generating matrix.

[0003] One type of aerosol generation system is an electrically operated smoking system. Known handheld electrically operated smoking systems typically include an aerosol generation device comprising a rechargeable battery, control electronics, and an electric heater for heating an aerosol-generating article specifically designed for use with the aerosol generation device. In some instances, the aerosol-generating article comprises an aerosol-forming matrix (such as a tobacco stick or tobacco rod), and when the aerosol-generating article is inserted into the aerosol generation device, a heater contained within the aerosol generation device is inserted into or positioned around the aerosol-forming matrix.

[0004] A heating element can be incorporated into an aerosol generating apparatus to generate inhalable vapor. Such an apparatus heats the aerosol generating matrix contained within an aerosol generating article without burning the aerosol generating matrix. In doing so, the aerosol generating matrix can generate an aerosol, which can then be delivered to a user.

[0005] Such aerosol-generating articles can be in the form of conventional cigarettes. In this case, the aerosol-generating matrix can be wrapped in cigarette paper. This method may be suitable when the aerosol-generating matrix comprises strands or strips of material (e.g., strands of cast tobacco or strands of shredded tobacco).

[0006] However, this method may not be effective in preserving other forms of aerosol generating matrix (such as granular or powdered aerosol generating matrices). Such aerosol generating articles are susceptible to leakage of the aerosol generating matrix during their storage, handling, and use. Leakage of the aerosol generating matrix can be exacerbated by high ambient temperatures and humidity. Loss of the aerosol generating matrix through leakage can adversely reduce the lifespan of aerosol generating articles that include the aerosol generating matrix. Leakage of the aerosol generating matrix can negatively impact the overall performance of the aerosol generating article. For example, leakage of the aerosol generating matrix can negatively affect the consistency of the inhalable aerosols generated by an aerosol generating system that includes the aerosol generating article. Summary of the Invention

[0007] To provide an aerosol generating article in which the loss or leakage of the aerosol generating matrix is ​​reduced or prevented even when the aerosol generating article is heated to the temperature required to generate aerosols from the aerosol generating matrix, an aerosol generating article comprising a container can be provided. Such an aerosol generating article may be able to retain different forms of the aerosol generating matrix (such as granular or powdered aerosol generating matrix). Such an aerosol generating article comprising a container, when used in combination with a suitable aerosol generating apparatus, can be easily handled and operated by the consumer. However, prior art aerosol generating apparatus may not be suitable for heating aerosol generating articles comprising containers. For example, inserting a heating element into an aerosol generating article comprising a container may adversely cause leakage of the aerosol generating matrix from the container. Additionally, existing heaters configured to externally heat the aerosol generating article may not provide effective heating sufficient to generate a consistent aerosol from the aerosol generating article comprising a container.

[0008] Aerosol-generating articles, including containers, can be larger than those in the prior art. In such cases, providing more customized heating of the aerosol-generating article (which is impossible with prior art aerosol-generating apparatuses) may be advantageous. Furthermore, providing effective heating for larger aerosol-generating articles may be impossible with prior art aerosol-generating apparatuses. This could result in at least a portion of the aerosol-generating matrix within the aerosol-generating article not being fully utilized to generate aerosols.

[0009] As a result, there is a need for an aerosol generating apparatus that can provide more consistent aerosol generation.

[0010] In addition, there is a need to provide an aerosol generation apparatus in which a larger proportion of the aerosol generation matrix can be used to generate aerosols.

[0011] In addition, there is a need for an aerosol generation apparatus in which aerosol generation can be customized depending on the properties of the aerosol-generated product.

[0012] According to a first aspect of this disclosure, an aerosol generating apparatus is provided for use with an aerosol generating article. The aerosol generating apparatus may include a housing. The housing may include a recess for receiving the aerosol generating article. The housing may include a heater assembly configured to heat the aerosol generating article when received in the recess. The apparatus may also include at least one heat-conducting element disposed on the inner wall of the recess.

[0013] According to a first aspect of the invention, an aerosol generating apparatus is provided for use with an aerosol generating article. The aerosol generating apparatus includes a housing. The housing includes a recess for receiving the aerosol generating article, and a heater assembly configured to heat the aerosol generating article when received in the recess. The apparatus also includes at least one heat-conducting element disposed on the inner wall of the recess.

[0014] Providing at least one heat-conducting element on the inner wall of the recess helps distribute heat from the heater assembly around the inner wall of the recess. This advantageously improves the heating efficiency of the aerosol-generating article received within the recess. Specifically, providing at least one heat-conducting element advantageously ensures that the portion of the aerosol-generating article spaced apart from the heater assembly can be effectively heated to generate aerosols. This advantageously improves the consistency of the aerosols generated by the aerosol-generating apparatus. Furthermore, providing at least one heat-conducting element ensures that a larger proportion of the aerosol-generating matrix can be utilized to generate aerosols.

[0015] Providing at least one heat-conducting element on the inner wall of the recess offers these advantages, eliminating the need for a second heating device configured to heat the recess. This advantageously simplifies the manufacture of the aerosol generating apparatus. Furthermore, in instances where the heater assembly is configured to move relative to the recess to allow access to the cavity of the recess, providing at least one heat-conducting element advantageously eliminates the need to supply power to the recess. This significantly simplifies the structure of the aerosol generating apparatus.

[0016] In use, the aerosol generating article can be received in a recess of the housing. A heater assembly can be activated to heat the aerosol generating article (particularly the portion directly adjacent to the heater assembly) to generate aerosols from the aerosol generating matrix. Heat is also transferred away from the heater assembly via at least one thermally conductive element surrounding the inner wall of the recess. The heat from the at least one thermally conductive element can then heat the portion of the aerosol generating article spaced apart from the heating assembly to generate aerosols from the aerosol generating matrix.

[0017] As used herein with reference to this invention, the term "aerosol-generating matrix" refers to a matrix capable of releasing volatile compounds that can condense to form aerosols when heated.

[0018] As used herein with reference to this invention, the term "aerosol" refers to a dispersion of solid particles or droplets, or a combination of solid particles and droplets, in a gas. Aerosols can be visible or invisible. Aerosols may include vapors of substances that are typically liquid or solid at room temperature, as well as solid particles or droplets, or a combination of solid particles and droplets.

[0019] As used herein with reference to this invention, the term "aerosol-generating article" refers to an article comprising an aerosol-generating matrix capable of releasing volatile compounds that can form aerosols. Aerosol-generating articles may be disposable.

[0020] As used herein with reference to this invention, the term "aerosol generating apparatus" refers to an apparatus that interacts with an aerosol generating matrix to generate aerosols. In some instances, the aerosol generating apparatus heats the aerosol generating matrix to promote the release of volatile compounds from the matrix.

[0021] As used herein with reference to this invention, the term "aerosol generation system" refers to a combination of an aerosol generation device and an aerosol generation product.

[0022] As used herein with reference to this invention, the term "heater assembly" refers to an apparatus configured to generate heat to heat an aerosol-generating article. The heater assembly may be an electric heater assembly.

[0023] The recess may include at least one air inlet to allow air to enter the recess and approach the aerosol-generated article received within the recess. At least one air inlet may be located at the upstream end of the recess. The recess may include at least one aerosol outlet to allow the aerosol to exit the recess for delivery to a user. At least one aerosol outlet may be located at the downstream end of the recess.

[0024] The recess may include a peripheral edge. At least one thermally conductive element may have a first edge and an opposing second edge. The first edge may cover the peripheral edge of the recess.

[0025] The peripheral edge of the concave portion can lie within a plane. The peripheral edge of the concave portion can define a plane.

[0026] In use, when the device is off, the heater assembly can be at least partially located in a parallel plane. In this way, with a peripheral edge covering the first edge of at least one thermally conductive element, at least a portion of the first edge of the at least one thermally conductive element can be as close as possible to the heater assembly. This advantageously ensures sufficient heat transfer from the heater assembly to the at least one thermally conductive element. In some instances, the first edge of the at least one thermally conductive element can be located in a plane parallel to the heater assembly. This advantageously ensures a larger proportion of the at least one thermally conductive element is close to the heater assembly, further improving heat transfer from the heater assembly to the at least one thermally conductive element.

[0027] At least one thermally conductive element may have a first edge and an opposing second edge. The first edge and the opposing second edge may be parallel to each other. The first edge and the opposing second edge may have the same length. The first edge and the opposing second edge may be parallel to each other and have the same length. At least one thermally conductive element may also include a first lateral edge and an opposing second lateral edge extending between the first edge and the second edge. In this way, at least one thermally conductive element may be rectangular in shape.

[0028] The peripheral edge can be continuous, such that it completely defines the entrance to the recess. The peripheral edge can also be discontinuous.

[0029] At least one heat-conducting element has a second edge that covers the peripheral edge of the recess. In this way, both ends of the at least one heat-conducting element can be in close proximity to the heater assembly. This can advantageously improve heat conduction from the heater assembly to the at least one heat-conducting element. This can advantageously improve the efficiency of aerosol generation from the aerosol-generating article.

[0030] The portion of the peripheral edge covered by the first edge of at least one thermally conductive element may be opposite to the portion of the peripheral edge covered by the second edge of at least one thermally conductive element.

[0031] The second edge of at least one thermally conductive element may not cover the peripheral edge of the recess.

[0032] In this way, some parts of the aerosol-generated article can be heated to a higher temperature than other parts. This advantageously allows for customized control of the heating of the aerosol-generated article by the aerosol generating device.

[0033] The aerosol generating apparatus may include a first thermally conductive element having a first edge covering the peripheral edge of the recess on a first side of the recess, and a second edge not covering the peripheral edge of the recess.

[0034] The aerosol generating apparatus may include a second heat-conducting element having a first edge covering the peripheral edge of the recess on a second side of the recess, and a second edge not covering the peripheral edge of the recess.

[0035] The first and second heat-conducting elements can be aligned in the longitudinal direction.

[0036] As used herein with reference to the present invention, the term "longitudinal" refers to the direction corresponding to the main longitudinal axis of the aerosol generating apparatus or a portion thereof, which extends between the upstream and downstream ends of the aerosol generating apparatus or a portion thereof.

[0037] As used herein with reference to the present invention, the terms “upstream” and “downstream” describe the relative position of an element or portion of an element of an aerosol generating apparatus with respect to the direction in which aerosols are transported through the aerosol generating apparatus during use.

[0038] The first and second edges of at least one thermally conductive element may be parallel to the longitudinal axis of the recess.

[0039] In this way, the first edge and the second edge can be described as a first longitudinal edge and a second longitudinal edge. Additionally, the first transverse edge can be considered as an upstream transverse edge, and the second transverse edge can be considered as a downstream transverse edge.

[0040] At least one thermally conductive element may have an upstream lateral edge and an opposite downstream lateral edge.

[0041] The length of at least one thermally conductive element between its upstream and downstream lateral edges may be at least 3 mm. For example, the length of at least one thermally conductive element between its upstream and downstream lateral edges may be at least 4 mm, at least 6 mm, or at least 10 mm.

[0042] The length of at least one thermally conductive element between its upstream and downstream lateral edges may not exceed 20 mm. For example, the length of at least one thermally conductive element between its upstream and downstream lateral edges may not exceed 17 mm, 15 mm, or 13 mm.

[0043] The length of at least one thermally conductive element between its upstream and downstream lateral edges may be between about 3 mm and about 20 mm, between about 4 mm and about 17 mm, between about 6 mm and about 15 mm, or between about 10 mm and about 13 mm. The length of at least one thermally conductive element between its upstream and downstream lateral edges may be about 12 mm.

[0044] It has been found that providing a thermally conductive element with the length described above between the upstream and downstream lateral edges improves heat transfer from the heater assembly to the aerosol-generating article. This can advantageously improve aerosol generation from the aerosol-generating article.

[0045] As used herein with reference to the present invention, the “length” of at least one thermally conductive element refers to the distance between the upstream lateral edge and the opposite downstream lateral edge. The length of at least one thermally conductive element may be aligned with the longitudinal axis of the recess.

[0046] At least one of the thermally conductive elements may have its upstream lateral edge adjacent to the upstream end of the recess.

[0047] In this manner, the heat-conducting element extends from the upstream end of the recess and along at least a portion of the length of the recess. The upstream lateral edge of at least one heat-conducting element, positioned adjacent to the upstream end of the recess, advantageously facilitates heat transfer from the heater assembly to the upstream end of the aerosol-generating article received within the recess. This advantageously ensures that the aerosol-generating matrix at the upstream end of the aerosol-generating article is sufficiently heated to generate an aerosol. This may be particularly important because the aerosol-generating matrix at the end of the aerosol-generating article may typically receive less efficient heating.

[0048] At least one of the downstream lateral edges of the thermally conductive element may be adjacent to the downstream end of the recess.

[0049] In this manner, the heat-conducting element extends from the downstream end of the recess and along at least a portion of the length of the recess. The downstream lateral edge of at least one heat-conducting element, positioned adjacent to the downstream end of the recess, advantageously facilitates heat transfer from the heater assembly to the downstream end of the aerosol-generating article received within the recess. This advantageously ensures that the aerosol-generating matrix at the downstream end of the aerosol-generating article is sufficiently heated to generate an aerosol. This may be particularly important because the aerosol-generating matrix at the end of the aerosol-generating article may typically receive less efficient heating.

[0050] At least one thermally conductive element may be spaced apart from both the upstream and downstream ends of the recess.

[0051] At least one thermally conductive element may include a thermally conductive element extending from the upstream end of the recess to the downstream end of the recess.

[0052] At least one thermally conductive element may include a single thermally conductive element.

[0053] At least one thermally conductive element may include a single thermally conductive element extending from the upstream end of the recess to the downstream end of the recess.

[0054] In this way, the heat-conducting element can extend along the entire length of the recess. This ensures that the largest volume of the aerosol-generating matrix is ​​in close proximity to the heat-conducting element. This can advantageously improve the heating efficiency of the aerosol-generating article received within the recess, and the improved heating efficiency can improve the consistency of the aerosol generated during use.

[0055] The heat-conducting element can cover the entire inner wall of the recess.

[0056] At least one thermally conductive element may include multiple individual thermally conductive elements.

[0057] Providing multiple individual heat-conducting elements allows for the heating of specific portions of the aerosol-generating article received within the recess during use. This advantageously allows for the customization of aerosol generation based on the properties of the aerosol-generating article.

[0058] Each of the multiple individual thermal conductive elements may have the same length. Each of the multiple individual thermal conductive elements may have the same width. Each of the multiple individual thermal conductive elements may have the same surface area.

[0059] At least one thermally conductive element may include any number of individual thermally conductive elements.

[0060] At least one thermally conductive element may include no more than 10 thermally conductive elements. For example, at least one thermally conductive element may include no more than 7 thermally conductive elements, no more than 5 thermally conductive elements, or no more than 3 thermally conductive elements.

[0061] At least one thermally conductive element may include at least three separate thermally conductive elements.

[0062] For example, at least one thermally conductive element may include at least four thermally conductive elements or at least five thermally conductive elements.

[0063] At least one thermally conductive element may include three separate thermally conductive elements.

[0064] Multiple individual heat-conducting elements can be spaced apart from each other in the longitudinal direction.

[0065] Providing multiple individual heat-conducting elements spaced apart from each other prevents heat from the first heat-conducting element from being transferred directly to the second heat-conducting element. This ensures that the individual heat-conducting elements are thermally isolated from each other. This advantageously allows for heating of specific portions of the aerosol-generating article received within the recess during use. This advantageously allows for tailoring of aerosol generation to the properties of the aerosol-generating article.

[0066] Individual heat-conducting elements can be evenly distributed in the longitudinal direction.

[0067] In other words, the longitudinal displacement between adjacent individual heat-conducting elements can be the same. The spacing between adjacent individual heat-conducting elements can be the same as the spacing between the upstream end of the recess and the upstreammost individual heat-conducting element. The spacing between adjacent individual heat-conducting elements can be the same as the spacing between the downstream end of the recess and the downstreammost individual heat-conducting element.

[0068] The uniform distribution of individual heat-conducting elements in the longitudinal direction ensures uniform heating of the aerosol-generating article received within the recess. This advantageously ensures that aerosols are generated substantially uniformly from the aerosol-generating matrix during use.

[0069] The recess can have any length.

[0070] The recess may have a length of at least 10 mm. For example, the recess may have a length of at least 12 mm, at least 14 mm, at least 16 mm, or at least 18 mm.

[0071] The recess may have a length not exceeding 30 mm. For example, the recess may have a length not exceeding 28 mm, 25 mm, 20 mm, or 18 mm.

[0072] The recess may have a length between about 10 mm and about 30 mm, between about 12 mm and about 28 mm, between about 14 mm and about 25 mm, or between about 20 mm and about 16 mm.

[0073] The recess may have a length of approximately 14 mm. The recess may have a length of approximately 16 mm. The recess may have a length of approximately 18 mm.

[0074] The heating device may include multiple heating zones, which can be activated independently, so that different parts of the aerosol-generated article received in the recess can be selectively heated by the corresponding heating zones.

[0075] Providing multiple independently operable heating zones allows specific areas of the aerosol-generating article received in the recess to be heated at different times. Providing multiple independently operable heating zones allows specific areas of the aerosol-generating article received in the recess to be heated to different temperatures. Providing multiple independently operable heating zones allows specific areas of the aerosol-generating article received in the recess to be heated for different periods of time.

[0076] At least one heating zone may have a corresponding heat-conducting element, such that at least a portion of the aerosol-generated article received in the recess can be selectively heated by at least one heating zone and the corresponding heat-conducting element.

[0077] Providing at least one heating zone with a corresponding heat-conducting element advantageously allows a larger proportion of the aerosol-generating matrix to be selectively heated by at least one heating zone and a corresponding heat-conducting element. This can advantageously improve aerosol generation in the aerosol-generating article portion heated by the heating zone and the corresponding heat-conducting element.

[0078] At least one heating zone can be longitudinally aligned with the corresponding heat-conducting element.

[0079] By aligning at least one heating zone with a corresponding heat-conducting element, a specific portion of the aerosol-generated article can be effectively heated by both the heating zone and the corresponding heat-conducting element. Furthermore, aligning at least one heating zone with a corresponding heat-conducting element advantageously improves heat conduction from both the heating zone and the corresponding heat-conducting element.

[0080] As used herein with reference to this invention, the term "longitudinal alignment" means that the heating zone and the heat-conducting element are arranged such that the upstream end of the heating zone is in the same position in the longitudinal direction as the upstream end of the corresponding heat-conducting element, or the downstream end of the heating zone is in the same position in the longitudinal direction as the downstream end of the corresponding heat-conducting element.

[0081] At least one heating zone may have the same length as the corresponding heat-conducting element.

[0082] This configuration maximizes heat transfer from at least one heated zone to the other parts of the recess. This can advantageously improve aerosol generation in the aerosol-generating parts of the article heated by the heated zones and corresponding heat-conducting elements.

[0083] Each heating zone can have a corresponding heat-conducting element, so that different parts of the aerosol-generated product received in the recess can be selectively heated by the corresponding heating zone and heat-conducting element.

[0084] For example, an aerosol generating device may include a heater assembly comprising three heating zones and three corresponding heat-conducting elements. Each of the three heating zones may have the same length as its corresponding heat-conducting element. Each of the three heating zones may be longitudinally aligned with its corresponding heat-conducting element.

[0085] This can advantageously improve the aerosol generating apparatus's ability to control the heating of the aerosol-generating product received in the recess and the aerosol generation.

[0086] At least one thermally conductive element may include a thermally conductive material.

[0087] As used herein with reference to the present invention, the term "thermal conductive material" is used to describe a material having a volumetric thermal conductivity of at least about 10 W / m Kelvin (W / (mK)) at 23°C and 50% relative humidity, as measured using a modified transient planar source (MTPS) method.

[0088] At least one thermally conductive element may comprise a metal. For example, at least one thermally conductive element may comprise at least one of aluminum, steel, Nimman nickel alloy, and Inconel nickel alloy. The thermally conductive element may comprise aluminum.

[0089] The housing may include a heating wall, which includes a heater assembly, and wherein the heating wall is a planar wall.

[0090] As described above, providing a planar heating wall that combines with the peripheral edge of a recess located in a plane means that the peripheral edge of the recess is as close as possible to the heating wall along its entire length. This ensures that the recess is effectively closed by the planar heating wall, ensuring that the aerosol-generated article received within the recess is securely held. Additionally, this arrangement improves heat transfer from the heater assembly to at least one heat-conducting element.

[0091] The heating wall is movable relative to the recess between a closed position and an open position. In the closed position, the recess is substantially closed by the heating wall, and in the open position, access to the interior of the recess is allowed.

[0092] This configuration advantageously allows users to access the interior of the recess to insert and remove aerosol-generated articles.

[0093] When the heating wall is in the closed position, at least one thermally conductive element can contact the heater assembly.

[0094] This can advantageously improve heat transfer from the heater assembly to at least one heat-conducting element. This can advantageously improve the efficiency of aerosol generation from aerosol generating articles used in conjunction with an aerosol generating apparatus.

[0095] According to a second aspect of the present invention, an aerosol generation system is provided, the aerosol generation system comprising: an aerosol generation apparatus according to a first aspect of the present invention; and an aerosol generation article.

[0096] The aerosol-generated product can be received in the recess of the aerosol-generating device.

[0097] The aerosol-generating article can be any aerosol-generating article. The aerosol-generating article may include a container comprising a first wall and a second wall. The first and second walls may together define a matrix compartment. The aerosol-generating matrix may be disposed within the matrix compartment.

[0098] The first wall may be made of a different material than the second wall. The first wall may be made of a flexible cellulose-based material. The second wall may have higher stiffness than the first wall. Alternatively, the first wall may have higher stiffness than the second wall.

[0099] At least a portion of the first wall may be porous. As used herein with reference to the present invention, the term "cellulose-based material" refers to a material made of cellulose or a derivative of cellulose.

[0100] The first wall can contain any cellulosic material. The first wall can also contain nonwoven materials.

[0101] As used herein with reference to this invention, the term "nonwoven" refers to a manufactured sheet, web, or wadding of oriented or randomly oriented fibers bonded together by friction, and / or cohesion and / or adhesion, excluding products formed by weaving, braiding, tufting, stitching with incorporated yarns or filaments, or by wet felting (whether or not additionally needle-punched). The fibers may be of natural or synthetic origin.

[0102] The first wall may contain molded paper material.

[0103] The second wall can be non-porous. The second wall can be made of a substantially planar material. The second wall can be made of paper material.

[0104] The aerosol-generating matrix may contain at least one alkaloid.

[0105] As used herein with reference to this invention, the term "alkaloid compound" is used to describe any of a class of naturally occurring organic compounds containing one or more basic nitrogen atoms. Typically, alkaloids contain at least one nitrogen atom in an amine-type structure. This or other nitrogen atom in the alkaloid compound molecule can function as a base in acid-base reactions. In most alkaloid compounds, one or more of the nitrogen atoms are part of a cyclic system, such as a heterocycle. In nature, alkaloid compounds are primarily found in plants, and are particularly common in certain flowering plant families. However, some alkaloid compounds are found in animal species and fungi. In the context of this invention, the term "alkaloid compound" is used to describe both naturally occurring alkaloid compounds and synthetically produced alkaloid compounds. Suitable alkaloid compounds for use in aerosol generating elements according to the invention include, but are not limited to, nicotine and neonicotinoids.

[0106] In a preferred embodiment, the aerosol generating matrix contains nicotine or neonicotinoids.

[0107] In a particularly preferred embodiment, the aerosol generating matrix contains nicotine.

[0108] As used herein with reference to this invention, the term "nicotine" is used to describe nicotine, nicotine base, or nicotine salt. In embodiments where the aerosol generating matrix comprises nicotine base or nicotine salt, the amount of nicotine described herein is either the amount of free base nicotine or the amount of protonated nicotine.

[0109] The aerosol-generating matrix may contain natural or synthetic nicotine.

[0110] The aerosol-generating matrix may contain one or more monoprotic nicotine salts.

[0111] As used herein with reference to this invention, the term "monoproton nicotine salt" is used to describe nicotine salts of monoproton acids.

[0112] The aerosol-generating matrix may contain nicotine.

[0113] The aerosol generating matrix may contain an aerosol forming agent. The aerosol generating matrix may contain any amount of aerosol forming agent. The aerosol generating matrix may contain at least 50% by weight, at least 60% by weight, or at least 70% by weight of the aerosol forming agent. The aerosol generating matrix may contain approximately 80% by weight of the aerosol forming agent.

[0114] The aerosol-generating matrix may contain polyols.

[0115] Polyols act as aerosol forming agents in aerosol-generating matrices. Suitable polyols for use in aerosol-generating matrices include, but are not limited to, propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol. Preferably, in the aerosol-generating matrix according to the invention, the polyol is selected from glycerol, propylene glycol, and combinations thereof. In a particularly preferred embodiment, the polyol is glycerol.

[0116] The aerosol generating matrix may include particles. Particles may have any diameter. The aerosol generating matrix may include particles with diameters greater than or equal to 100 micrometers, greater than or equal to 250 micrometers, or greater than or equal to 500 micrometers.

[0117] The aerosol generating matrix may include particles with a diameter of 5 mm or less, 4 mm or less, or 3 mm or less.

[0118] Aerosol-generating matrices may include particles with diameters between 500 micrometers and 3 millimeters. Aerosol-generating matrices may also include particles with a diameter of approximately 1.5 millimeters.

[0119] The matrix compartment can hold any mass of aerosol generation matrix. For example, the matrix compartment can hold at least 80 mg of aerosol generation matrix, at least 85 mg of aerosol generation matrix, or at least 90 mg of aerosol generation matrix.

[0120] The matrix compartment can hold no more than 300 mg of aerosol generation matrix, no more than 250 mg of aerosol generation matrix, or no more than 200 mg of aerosol generation matrix.

[0121] The matrix compartment can hold aerosol generation matrix between 80 mg and 300 mg, between 85 mg and 250 mg, and between 100 mg and 200 mg.

[0122] The following is a non-exhaustive list of non-limiting examples. Any one or more features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.

[0123] Example Ex1.1. An aerosol generating apparatus for use with an aerosol generating article, the aerosol generating apparatus comprising: a housing, the housing including: a recess for receiving the aerosol generating article.

[0124] Example Ex1.2. An aerosol generating apparatus according to Example Ex1.1, wherein the housing includes a heater assembly configured to heat the aerosol generating article when it is received in the recess.

[0125] Example Ex1.3. An aerosol generating apparatus according to Example Ex1.1 or Ex1.2, the apparatus further includes at least one heat-conducting element disposed on the inner wall of the recess.

[0126] Example Ex1. An aerosol generating apparatus for use with an aerosol generating article, the aerosol generating apparatus comprising: a housing including: a recess for receiving the aerosol generating article; and a heater assembly configured to heat the aerosol generating article when received in the recess, the apparatus further comprising at least one heat-conducting element disposed on an inner wall of the recess.

[0127] Example Ex2. An aerosol generating apparatus according to Example Ex1, wherein the recess includes a peripheral edge, and wherein the at least one thermally conductive element has a first edge and an opposing second edge, the first edge covering the peripheral edge of the recess.

[0128] Example Ex3. An aerosol generating apparatus according to Example Ex2, wherein the second edge of the at least one thermally conductive element covers the peripheral edge of the recess.

[0129] Example Ex4. An aerosol generating apparatus according to Example Ex2, wherein the second edge of the at least one thermally conductive element does not cover the peripheral edge of the recess.

[0130] Example Ex5. An aerosol generating apparatus according to Example Ex2, comprising:

[0131] A first thermally conductive element has a first edge covering the peripheral edge of the recess on a first side of the recess, and a second edge not covering the peripheral edge of the recess.

[0132] The second heat-conducting element has a first edge covering the peripheral edge of the recess on a second side of the recess, and a second edge not covering the peripheral edge of the recess.

[0133] Example Ex6. An aerosol generating apparatus according to Example Ex5, wherein the first heat-conducting element and the second heat-conducting element are aligned in the longitudinal direction.

[0134] Example Ex7. An aerosol generating apparatus according to Example Ex2, wherein the first edge and the second edge of the at least one heat-conducting element are parallel to the longitudinal axis of the recess.

[0135] Example Ex8. An aerosol generating apparatus according to Example Ex2, wherein the peripheral edge of the recess defines a plane.

[0136] Example Ex9. An aerosol generating apparatus according to any of the foregoing examples, wherein the at least one thermally conductive element has an upstream lateral edge and an opposing downstream lateral edge, the length of the at least one thermally conductive element between the upstream lateral edge and the downstream lateral edge being at least 3 mm.

[0137] Example Ex10. An aerosol generating apparatus according to Example Ex9, wherein the length of the at least one thermally conductive element between the upstream lateral edge and the downstream lateral edge does not exceed 20 mm.

[0138] Example Ex11. An aerosol generating apparatus according to Example Ex9 or Ex10, wherein the upstream lateral edge of the at least one thermally conductive element is adjacent to the upstream end of the recess.

[0139] Example Ex12. An aerosol generating apparatus according to any one of Examples Ex9 to Ex11, wherein the downstream lateral edge of the at least one thermally conductive element is adjacent to the downstream end of the recess.

[0140] Example Ex13. An aerosol generating apparatus according to any one of Examples Ex9 to Ex11, wherein the at least one thermally conductive element is spaced apart from both the upstream end and the downstream end of the recess.

[0141] Example Ex14. An aerosol generating apparatus according to any of the foregoing examples, wherein the at least one thermally conductive element comprises a thermally conductive element extending from the upstream end of the recess to the downstream end of the recess.

[0142] Example Ex15. An aerosol generating apparatus according to any one of Examples Ex1 to Ex13, wherein the at least one thermally conductive element comprises a plurality of individual thermally conductive elements.

[0143] Example Ex16. An aerosol generating apparatus according to Example Ex15, wherein the at least one thermally conductive element comprises no more than 10 thermally conductive elements.

[0144] Example Ex17. An aerosol generating apparatus according to Example Ex15 or Ex16, wherein the at least one thermally conductive element comprises at least three separate thermally conductive elements.

[0145] Example Ex18. An aerosol generating apparatus according to any one of Examples Ex15 to Ex17, wherein the plurality of individual heat-conducting elements are spaced apart from each other in the longitudinal direction.

[0146] Example Ex19. An aerosol generating apparatus according to Example Ex18, wherein the individual heat-conducting elements are uniformly distributed in the longitudinal direction.

[0147] Example Ex20. An aerosol generating apparatus according to any of the foregoing examples, wherein the recess has a length of at least 10 millimeters.

[0148] Example Ex21. An aerosol generating apparatus according to any of the preceding examples, wherein the recess has a length of no more than 30 mm.

[0149] Example Ex22. An aerosol generating apparatus according to any of the foregoing examples, wherein the heating device includes a plurality of heating zones that can be activated independently, such that different portions of the aerosol-generated article received in the recess can be selectively heated by the corresponding heating zones.

[0150] Example Ex23. An aerosol generating apparatus according to Example Ex22, wherein at least one heating zone has a corresponding heat-conducting element, such that at least a portion of an aerosol-generated article received in the recess can be selectively heated by the at least one heating zone and the corresponding heat-conducting element.

[0151] Example Ex24. An aerosol generating apparatus according to Example Ex23, wherein the at least one heating zone is longitudinally aligned with the corresponding heat-conducting element.

[0152] Example Ex25. An aerosol generating apparatus according to Example Ex23 or Ex24, wherein the at least one heating zone has the same length as the corresponding heat-conducting element.

[0153] Example Ex26. An aerosol generating apparatus according to any one of Examples Ex23 to Ex25, wherein each heating zone has a corresponding heat-conducting element, such that different portions of the aerosol-generated article received in the recess can be selectively heated by the corresponding heating zone and heat-conducting element.

[0154] Example Ex27. An aerosol generating apparatus according to any of the foregoing examples, wherein the at least one thermally conductive element comprises metal.

[0155] Example Ex28. An aerosol generating apparatus according to any of the foregoing examples, wherein the at least one thermally conductive element comprises aluminum.

[0156] Example Ex29. An aerosol generating apparatus according to any of the foregoing examples, wherein the housing includes a heating wall, the heating wall including the heater assembly.

[0157] Example Ex29a. An aerosol generating apparatus according to Example Ex29, wherein the heated wall is a planar wall.

[0158] Example Ex30. An aerosol generating apparatus according to Example Ex29 or Example Ex29a, wherein the heating wall is movable relative to the recess between a closed position and an open position, wherein the recess is substantially closed by the heating wall in the closed position, and the open position allows access to the interior of the recess.

[0159] Example Ex31. An aerosol generating apparatus according to Example Ex30, wherein when the heating wall is in the closed position, the at least one thermally conductive element is in contact with the heater assembly.

[0160] Example Ex32. An aerosol generation system, comprising an aerosol generation apparatus according to any of the foregoing examples; and an aerosol generation article. Attached Figure Description

[0162] The invention will now be further described by way of example only, with reference to the accompanying drawings, in which:

[0163] Figure 1 A cross-sectional view of the aerosol generating apparatus according to the present invention is shown in a first direction;

[0164] Figure 2 A cross-sectional view of a portion of the first aerosol generating apparatus according to the present invention is shown in a second direction;

[0165] Figure 3 A cross-sectional view of a portion of the second aerosol generating apparatus according to the present invention is shown in a second direction;

[0166] Figure 4 A plan view of the heater assembly of the aerosol generating apparatus according to the present invention is shown;

[0167] Figure 5 It is a graph comparing nicotine delivery using the aerosol generating apparatus according to the present invention with that using an aerosol generating apparatus not according to the present invention;

[0168] Figure 6 It is a graph comparing nicotine delivery using the aerosol generating apparatus according to the present invention with that using an aerosol generating apparatus not according to the present invention;

[0169] Figure 7 It is a graph comparing nicotine delivery using the aerosol generating apparatus according to the present invention with that using an aerosol generating apparatus not according to the present invention;

[0170] Figure 8 It is a graph comparing the delivery of glycerol using the aerosol generating apparatus according to the present invention with that using an aerosol generating apparatus not according to the present invention;

[0171] Figure 9It is a graph comparing the delivery of glycerol using the aerosol generating apparatus according to the present invention with that using an aerosol generating apparatus not according to the present invention;

[0172] Figure 10 This is a graph comparing glycerol delivery using the aerosol generating apparatus according to the present invention with that using an aerosol generating apparatus not according to the present invention; and

[0173] Figure 11 A side cross-sectional view of an aerosol-generating article to be used with an aerosol-generating apparatus according to the invention is shown. Detailed Implementation

[0174] exist Figure 1 The diagram shows an aerosol generating apparatus 100 according to the present invention. Apparatus 100 is intended for use with aerosol generating articles (in...) Figure 1 (Not shown in the image) Used together. The device 100 includes a housing 110. The housing 110 includes a recess 111 for receiving an aerosol-generating article. The housing 110 includes a heater assembly 112 configured to heat the aerosol-generating article when it is received in the recess 111.

[0175] The housing 110 includes a planar heating wall 113, which includes a heater assembly 112. The heating wall 113 is positioned relative to the recess 111. Figure 1 The recess is movable between a closed position shown and an open position not shown, in which the recess is substantially closed by a heated wall, and the open position allows access to the interior of the recess 111.

[0176] The recess 111 has a length of approximately 20 millimeters.

[0177] Recess 111 includes an air inlet 116 at its upstream end 114 to allow air to enter the recess 111. Recess 111 includes an aerosol outlet 119 at its downstream end 115 to allow air to exit the recess 111. The airflow through the aerosol inlet 116 and the air outlet 119 is indicated by arrow 118.

[0178] The device 100 also includes three heat-conducting elements 110 disposed on the inner wall of the recess. Each heat-conducting element 110 has a length of approximately 5 millimeters. Each of the heat-conducting elements 110 is uniformly distributed in the longitudinal direction.

[0179] The thermally conductive element contains aluminum.

[0180] Figure 2 and Figure 3 It shows when along in Figure 1 When observing the plane AA shown in the figure Figure 1A cross-sectional view of a portion of the aerosol generating apparatus 100 shown in the figure.

[0181] exist Figure 2 In the portion of the aerosol generating apparatus 200 shown, the recess 211 includes a peripheral edge 220 on either side of the recess 211. The peripheral edge 220 of the recess 211 defines a plane. The apparatus 200 also includes a thermally conductive element 210 that covers the peripheral edge 220 on both sides of the recess 211.

[0182] exist Figure 3 In the portion of the aerosol generating apparatus 300 shown, a recess 311 includes a peripheral edge 320 on either side of the recess 311. The peripheral edge 320 of the recess 311 defines a plane. The apparatus 300 also includes a first thermally conductive element 321 and a second thermally conductive element 322. A first edge of the first thermally conductive element 321 covers the peripheral edge 320 of the recess 311, and a second edge of the first thermally conductive element 321 does not cover the peripheral edge 320 of the recess 311. A first edge of the second thermally conductive element 322 covers the peripheral edge 320 of the recess 311, and a second edge of the second thermally conductive element 322 does not cover the peripheral edge 320 of the recess 311. The second edges of the first thermally conductive element 321 and the second thermally conductive element 322 are spaced apart from each other. The first thermally conductive element 321 and the second thermally conductive element 322 are aligned in the longitudinal direction.

[0183] Refer again Figure 1 At least one thermally conductive element 110 has an upstream lateral edge and an opposite downstream lateral edge, and the length of the at least one thermally conductive element 110 between the upstream lateral edge and the downstream lateral edge is at least 3 mm.

[0184] Figure 4 It shows when along in Figure 1 When observing the plane BB shown in the figure Figure 1 The arrangement of heater assembly 112 is shown in the figure. Heater assembly 412 includes a first heating region 401 disposed at an upstream end 400 of heater assembly 412, a second heating region 403 disposed at a downstream end 402 of heater assembly 412, and a third heating region 406 disposed between the first heating region 401 and the second heating region 403. Each of the first heating region 401, the second heating region 403, and the third heating region 406 includes an individually actuable sinusoidal resistance heating element 405. Figure 4 In the example shown, each of the first heating zone 401, the second heating zone 403, and the third heating zone 406 has the same length. Each of the first heating zone 401, the second heating zone 403, and the third heating zone 406 has a length of approximately 5 millimeters.

[0185] Refer again Figure 1 Each heating zone 401, 403, 406 has a corresponding heat-conducting element 110, so that different parts of the aerosol-generated article received in the recess 111 can be selectively heated by the corresponding heating zone 401, 403, 406 and the heat-conducting element 110.

[0186] Figure 5 The nicotine delivery per inhalation of the aerosol generating apparatus according to the invention is illustrated. [For generating...] Figure 5 The aerosol generating device in the data has a recess with a length of 14 mm. Line 502 shows nicotine delivery per puff when the device includes a single thermally conductive element with a length of 6 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Line 501 shows nicotine delivery per puff when the device includes a single thermally conductive element with a length of 12 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Lines 503 and 504 show results for a control aerosol generating device that does not include a thermally conductive element.

[0187] Figure 6 The nicotine delivery per inhalation of the aerosol generating apparatus according to the invention is illustrated. [For generating...] Figure 6 The aerosol generating device in the data has a recess with a length of 16 mm. Line 602 shows nicotine delivery per puff when the device includes a single thermally conductive element with a length of 6 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Line 601 shows nicotine delivery per puff when the device includes a single thermally conductive element with a length of 12 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Lines 603 and 604 show results for a control aerosol generating device that does not include a thermally conductive element.

[0188] Figure 7 The nicotine delivery per inhalation of the aerosol generating apparatus according to the invention is illustrated. [For generating...] Figure 7 The aerosol generating device in the data has a recess with a length of 18 mm. Line 702 shows nicotine delivery per puff when the device includes a single heat-conducting element with a length of 6 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Line 701 shows nicotine delivery per puff when the device includes a single heat-conducting element with a length of 12 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Lines 703 and 704 show results for a control aerosol generating device that does not include a heat-conducting element.

[0189] Figure 8The delivery of glycerol per inhalation of the aerosol generating apparatus according to the invention is illustrated. Used to generate... Figure 8 The aerosol generating device in the data has a recess with a length of 14 mm. Line 802 shows the delivery of glycerol per puff when the device includes a single heat-conducting element with a length of 6 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Line 801 shows the delivery of glycerol per puff when the device includes a single heat-conducting element with a length of 12 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Lines 803 and 804 show the results for a control aerosol generating device that does not include a heat-conducting element.

[0190] Figure 9 The delivery of glycerol per inhalation of the aerosol generating apparatus according to the invention is illustrated. Used to generate... Figure 9 The aerosol generating device in the data has a recess with a length of 16 mm. Line 902 shows the delivery of glycerol per puff when the device includes a single thermally conductive element with a length of 6 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Line 901 shows the delivery of glycerol per puff when the device includes a single thermally conductive element with a length of 12 mm, which extends the entire width of the recess and is aligned with the upstream end of the recess. Lines 903 and 904 show the results for a control aerosol generating device that does not include a thermally conductive element.

[0191] Figure 10 The delivery of glycerol per inhalation of the aerosol generating apparatus according to the invention is illustrated. Used to generate... Figure 10 The aerosol generating device in the data has a recess with a length of 18 mm. Line 1002 shows the delivery of glycerol per puff when the device includes a single heat-conducting element with a length of 6 mm, which extends the entire width of the recess and is aligned with the downstream end of the recess. Line 1001 shows the delivery of glycerol per puff when the device includes a single heat-conducting element with a length of 12 mm, which extends the entire width of the recess and is aligned with the downstream end of the recess. Line 1003 shows the results for a control aerosol generating device that does not include a heat-conducting element.

[0192] As can be seen from the graphs, the delivery of both nicotine and glycerin is improved for aerosol-generating devices with recesses of all lengths by adding a thermally conductive element. Specifically, the thermally conductive element produces a greater mass of nicotine and glycerin at an earlier point in the user experience. Furthermore, in most exemplary devices, a 12 mm long thermally conductive element provides a higher and earlier peak in nicotine and glycerin delivery compared to a 6 mm long thermally conductive element.

[0193] exist Figure 11 The diagram illustrates an aerosol generating article 1100 for use with the aerosol generating apparatus of the present invention. The aerosol generating article 1100 includes a container 1110. The container 1110 includes a first wall 1111 and a second wall 1112, the first and second walls together defining a matrix compartment 1113. An aerosol generating matrix 1114 is disposed within the matrix compartment.

[0194] exist Figure 11 In the example shown, the first wall 111 is formed of a nonwoven cotton material. The first wall 1111 contains between 85% and 90% by weight of cellulose, between 7% and 16% by weight of hemicellulose, and between 1% and 3% by weight of lignin. The first wall 1111 is porous.

[0195] The second wall 1112 comprises paper. The second wall 1112 has a basis weight of approximately 35 gsm. The second wall is non-porous.

[0196] The second wall 1112 is essentially planar. The second wall 1112 has higher rigidity than the first wall 1111. In this way, the first wall 1111 can generally form a bag shape closed by the second wall 712.

[0197] Aerosol generating matrix 1114 is disposed in matrix compartment 1113. Aerosol generating matrix 1114 includes particles of homogenized tobacco material and an aerosol forming agent. The aerosol forming agent includes glycerol. Matrix compartment 1113 contains approximately 150 mg of aerosol generating matrix 1114.

[0198] Refer again Figure 1 In use, the heating wall 113 moves to the open position to allow the aerosol generating article 700 to be inserted into the recess 111 of the aerosol generating apparatus 100. The heater assembly 112 is activated to heat the aerosol generating article 700 (particularly the portion directly adjacent to the heater assembly 112) to generate an aerosol from the aerosol generating matrix. Heat is also transferred away from the heater assembly 112 via the heat-conducting element 110 around the inner wall of the recess 111. The heat from the heat-conducting element 110 then heats the portion of the aerosol generating article 700 spaced apart from the heating assembly 112 to generate an aerosol from the aerosol generating matrix.

[0199] For the purposes of this specification and the appended claims, unless otherwise indicated, all figures representing quantities, quantities, percentages, etc., shall be understood to be modified by the term "about" in all cases. Thus, in this context, the figure A is understood to be A ± 10% of A. In this context, the figure A can be considered to include a value within the general standard error for the measurement of the property modified by the figure A. In certain instances used in the appended claims, the figure A may deviate from the percentages listed above, provided that the amount of deviation from A does not materially affect the essential and novel features of the claimed invention. Moreover, all ranges include the disclosed maximum and minimum points, and include any intermediate ranges that may or may not be specifically listed herein.

Claims

1. An aerosol generating apparatus for use with an aerosol generating article, the aerosol generating apparatus comprising: Housing, the housing comprising: A recess for receiving aerosol-generated products. A heater assembly configured to heat the aerosol-generating article when it is received in the recess, and A heating wall, including the heater assembly, is movable relative to the recess between a closed position and an open position, wherein the recess is substantially closed by the heating wall in the closed position, and the open position allows access to the interior of the recess. The device further includes at least one heat-conducting element disposed on the inner wall of the recess. When the heating wall is in the closed position, the at least one thermally conductive element is in contact with the heater assembly.

2. The aerosol generating apparatus according to claim 1, wherein the recess includes a peripheral edge, and wherein the at least one thermally conductive element has a first edge and an opposing second edge, the first edge covering the peripheral edge of the recess.

3. The aerosol generating apparatus according to claim 2, wherein the second edge of the at least one thermally conductive element covers the peripheral edge of the recess.

4. The aerosol generating apparatus according to claim 2, wherein the second edge of the at least one thermally conductive element does not cover the peripheral edge of the recess.

5. The aerosol generating apparatus according to claim 2, comprising: A first thermally conductive element has a first edge covering the peripheral edge of the recess on a first side of the recess, and a second edge not covering the peripheral edge of the recess. The second heat-conducting element has a first edge covering the peripheral edge of the recess on a second side of the recess, and a second edge not covering the peripheral edge of the recess.

6. The aerosol generating apparatus according to claim 5, wherein the first heat-conducting element and the second heat-conducting element are aligned in the longitudinal direction.

7. The aerosol generating apparatus according to claim 2, wherein the first edge and the second edge of the at least one heat-conducting element are parallel to the longitudinal axis of the recess.

8. The aerosol generating apparatus according to claim 2, wherein the peripheral edge of the recess defines a plane.

9. The aerosol generating apparatus according to any of the preceding claims, wherein the at least one thermally conductive element has an upstream lateral edge and an opposing downstream lateral edge, and the length of the at least one thermally conductive element between the upstream lateral edge and the downstream lateral edge is at least 3 mm.

10. The aerosol generating apparatus according to claim 9, wherein the length of the at least one thermally conductive element between the upstream lateral edge and the downstream lateral edge does not exceed 20 mm.

11. The aerosol generating apparatus according to claim 9 or claim 10, wherein the upstream lateral edge of the at least one thermally conductive element is adjacent to the upstream end of the recess.

12. The aerosol generating apparatus according to any of the preceding claims, wherein the at least one thermally conductive element comprises a thermally conductive element extending from an upstream end of the recess to a downstream end of the recess.

13. The aerosol generating apparatus according to any one of claims 1 to 11, wherein the at least one thermally conductive element comprises a plurality of individual thermally conductive elements.

14. The aerosol generating apparatus according to any of the preceding claims, wherein the at least one thermally conductive element comprises metal.

15. An aerosol generation system, comprising: Aerosol generating apparatus according to any of the preceding claims; as well as Aerosol-generated products.

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