巴西专利BR112015019821B1 AEROSOL GENERATOR DEVICE AND AEROS GENERATION SYSTEM

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专利摘要:
AEROSOL GENERATOR DEVICE AND AEROSOL GENERATION SYSTEM. The present invention relates to an aerosol generating device (4) for use in an aerosol generating system and an aerosol generating system comprising an aerosol generating device (4) and an aerosol generating article (2). The aerosol generating device (4) comprises: a cavity configured to receive an aerosol generating article (2); a first solid-liquid phase change material (16) positioned over a perimeter of the cavity; and heating means (14) configured to heat the first solid-liquid phase change material (16) to a temperature above the melting point of the first solid-liquid phase change material (16). The aerosol generating device (4) further comprises: a second solid-liquid phase change material (18), in which the melting point of the second solid-liquid phase change material (18) is greater than the melting point of the first solid-liquid phase change material (16).
公开号:BR112015019821B1
申请号:R112015019821-0
申请日:2013-12-23
公开日:2021-03-02
发明作者:Patrick Charles Silvestrini；Marie FARINE；Christopher James Rowe；Michael Roger Cane
申请人:Philip Morris Products S.A；
IPC主号:

专利说明:

[001] The present invention relates to an aerosol generating device for use in an aerosol generating system and an aerosol generating system comprising an aerosol generating device and an aerosol generating article. In particular, the present invention relates to an aerosol generating device and an aerosol generating system for generating an aerosol comprising particles of nicotine salt.
[002] WO 2008 / 121610A1, WO 2010/107613 A1 and WO 2011/034723 A1 disclose devices for delivering nicotine to a user comprising a volatile acid, such as pyruvic acid, or another source of volatile distribution enhancing compound and a source of nicotine. The volatile distribution enhancing compound is reacted with nicotine in the gas phase to form an aerosol of nicotine salt particles that is inhaled by the user.
[003] At room temperature, pyruvic acid and nicotine are both volatile enough to form the respective vapors that react with each other in the gas phase to form nicotine pyruvate salt particles. However, the vapor pressure of pyruvic acid at a given temperature is substantially greater than that of nicotine, leading to a difference in the vapor concentration of the two reagents. Differences between the vapor concentration of the volatile distribution enhancing compound and nicotine in devices of the type disclosed in WO 2008/121610 A1, WO 2010/107613 A1 and WO 2011/034723 A1 may disadvantageously lead to the distribution of the distribution enhancing compound volatile unreacted to a user.
[004] It is desirable to produce a maximum amount of nicotine salt particles for distribution to a user using a minimum amount of reagents. Consequently, it would be desirable to provide an aerosol generation system of the type disclosed in WO 2008/121610 A1, WO 2010/107613 A1 and WO 2011/034723 A1, in which the amount of unreacted volatile distribution enhancing agent is minimized.
[005] It would be especially desirable to provide an aerosol generation system of the type disclosed in WO 2008/121610 A1, WO 2010/107613 A1 and WO 2011/034723 A1, in which the consistency of the distribution of nicotine salt particles to a user is improved.
[006] According to the invention, an aerosol generating device is provided for use in an aerosol generating system, the aerosol generating device comprising: a cavity configured to receive an aerosol generating article; a first solid-liquid phase change material positioned over a perimeter of the cavity; heating means configured to heat the first solid-liquid phase change material to a temperature above the melting point of the first solid-liquid phase change material; and a second solid-liquid phase change material, wherein the melting point of the second solid-liquid phase change material is greater than the melting point of the first solid-liquid phase change material.
[007] According to the invention, an aerosol generating system is also provided which comprises an aerosol generating device according to the invention and an aerosol generating article.
[008] In particular, an aerosol generating device is provided which comprises an aerosol generating device according to the invention and an aerosol generating article, the aerosol generating article comprising: a first compartment comprising a source of compound improving volatile distribution and a second compartment comprising a nicotine source.
[009] As used in this document, the term "aerosol generating device" refers to a device that interacts with an aerosol generating article to generate an aerosol that is directly inhaled into a user's lungs through the user's mouth.
[0010] As used in this document, the term "aerosol generating article" refers to an article comprising an aerosol-forming substrate capable of releasing volatile compounds, which can form an aerosol. In certain embodiments, the aerosol-generating article may comprise an aerosol-forming substrate capable of releasing, upon heating, volatile compounds, which may form an aerosol.
[0011] As used in this document, the terms "upstream", "downstream", "proximal" and "distal" are used to describe the relative positions of the components, or parts of the components, of the aerosol generating devices and generating articles aerosol systems of aerosol generation systems, according to the invention.
[0012] The aerosol generating article comprises a proximal end through which, during use, an aerosol is released from the aerosol generating article. The proximal end can also be referred to as the mouth end. During use, a user brings in the proximal or mouth end of the aerosol-generating article in order to inhale an aerosol generated by the aerosol-generating article. The aerosol generating article comprises a distal end opposite the proximal or mouth end. The proximal or mouth end of the aerosol generating article can also be referred to as the downstream end, and the distal end of the aerosol generating article can also be referred to as the upstream end. The components, or parts of the components, of the aerosol generating article can be described as being upstream or downstream of each other based on their relative positions between the proximal or downstream end and the distal or upstream end of the aerosol generating article. aerosol.
[0013] The upstream and downstream ends of the aerosol generating article are defined in relation to the air flow when a user brings in the proximal end or the mouth of the aerosol generating article. Air is drawn into the aerosol generating article at the distal or upstream end, passes downstream through the aerosol generating article and exits the aerosol generating article at the proximal or downstream end.
[0014] As used in this document, the term "longitudinal" is used to describe the direction between the downstream or proximal end and the opposite upstream or distal end, and the term "transverse" is used to describe the direction perpendicular to the direction longitudinal.
[0015] The aerosol generating devices according to the invention comprise a first solid-liquid phase change material that is solid at room temperature. During use, when heated to its melting point by the heating means of the aerosol generating device, the first solid-liquid phase change material absorbs thermal energy as it changes phase from a solid to a liquid. After subsequent cooling, the first solid-liquid phase change material releases absorbed thermal energy as it changes phase from a liquid to a solid.
[0016] The thermal energy released by the first solid-liquid phase change material, as it solidifies, heats an aerosol-generating article received in the cavity of the aerosol-generated device to an operating temperature above room temperature.
[0017] In certain preferred embodiments, the aerosol generating devices according to the invention are used in cooperation with the aerosol generating articles comprising a first compartment comprising a source of volatile distribution enhancing compound and a second compartment which comprises a source of nicotine. In such embodiments, the thermal energy released by the first solid-liquid phase change material, as it solidifies, heats one or the first compartment and the second compartment of the aerosol generating article to an operating temperature above room temperature. This increases the vapor pressure of one or more volatile distribution enhancing compounds and nicotine, leading to a higher concentration of the respective vapors available for the reaction. This advantageously results in the production of a larger quantity of nicotine salt particles for distribution to a user.
[0018] The aerosol generating devices according to the invention comprise a cavity configured to receive an aerosol generating article.
[0019] Preferably, the cavity of the aerosol generating device is substantially cylindrical.
[0020] The cavity of the aerosol generating device can have a cross section in any suitable way. For example, the cavity can be a substantially circular, elliptical, triangular, square, rhomboid, trapezoid, pentagonal, hexagonal or octagonal cross section.
[0021] Preferably, the aerosol generating device cavity has a cross section substantially the same as the cross section of the aerosol generating article to be received in the cavity.
[0022] In certain embodiments, the aerosol generating device cavity may have a cross section substantially the same shape and dimensions as the cross section of the aerosol generating article to be received in the cavity in order to maximize the conductive thermal transfer of the generating device spray for the aerosol generating article.
[0023] As used in this document, the term "salt cross section" is used to describe the cavity cross section of the aerosol generating article perpendicular to the main axis of the cavity and the aerosol generating article, respectively.
Preferably, the cavity of the aerosol generating device is of substantially circular cross-section or of substantially elliptical cross-section. Most preferably, the cavity of the aerosol generating device is of substantially circular cross-section.
[0025] Preferably, the length of the cavity of the aerosol generating device is less than the length of the aerosol generating article so that, when the aerosol generating article is received in the cavity of the aerosol generating device, the proximal or downstream end of the aerosol generating article protrudes from the cavity of the aerosol generating device.
[0026] As used in this document, "length" means the maximum longitudinal dimension between the distal or upstream end and the proximal or downstream end of the cavity and the aerosol generating article.
[0027] Preferably, the cavity of the aerosol generating device has a diameter substantially equal to or slightly larger than the diameter of the aerosol generating article.
[0028] As used in this document, "diameter" means the maximum transverse dimension of the aerosol-generating article cavity.
[0029] The first solid-liquid phase change material is positioned over the perimeter of the aerosol generating device cavity so that the thermal energy released by the first solid-liquid phase change material, as it changes from phase to phase. a liquid to a solid, heat an aerosol-generating article received in the cavity.
[0030] The first solid-liquid phase change material can extend totally or partially around the circumference of the cavity. Preferably, the first solid-liquid phase change material extends entirely around the circumference of the cavity.
[0031] The first solid-liquid phase change material can extend totally or partially along the length of the cavity.
[0032] The first solid-liquid phase change material can be any suitable material that has a melting point in a desired operating temperature range of the aerosol generation system and a high latent heat of fusion.
[0033] Preferably, the first solid-liquid phase change material has a melting point of between about 30 degrees Celsius and about 70 degrees Celsius. In certain embodiments, the first solid-liquid phase change material can have a melting point of between about 40 degrees Celsius and about 60 degrees Celsius.
[0034] Preferably, the first solid-liquid phase change material has a latent heat of fusion of at least about 150 kJ / kg, more preferably at least 200 kJ / kg, more preferably at least 250 kJ / kg .
[0035] Preferably, the first solid-liquid phase change material has a thermal conductivity of at least about 0.5 W.m-1.K.
[0036] Preferably, the first solid-liquid phase change material undergoes small volumetric changes in the phase change from a solid to a liquid and from a liquid to a solid.
[0037] Preferably, the first solid-liquid phase change material has a low vapor pressure in the desired operating temperature range of the aerosol generation system.
[0038] Preferably, the first solid-liquid phase change material is non-flammable.
[0039] Examples of first solid-liquid phase change materials suitable for use in aerosol generating devices according to the invention include, but are not limited to: organic phase change materials, such as fatty acids and paraffins; and inorganic phase change materials, such as inorganic salt hydrates.
[0040] Fatty acids suitable for use as the first solid-liquid phase change material include, but are not limited to: lauric acid and myristic acid. Paraffins suitable for use as the first solid-liquid phase change material include, but are not limited to: icosane, pentacosane, hexacosane, heptacosane, octacosane, nonacosane, n-triacontane, hentriacontane, dotriacontane and tritriacontane.
[0041] In preferred embodiments, the first solid-liquid phase change material is an inorganic salt hydrate. Inorganic salt hydrates suitable for use as the first solid-liquid phase change material include, but are not limited to: disodic phosphoric acid dodecahydrate salt, calcium nitrate tetrahydrate, sodium thiosulfate pentahydrate and sodium acetate trihydrate.
[0042] In particularly preferred embodiments, the first solid-liquid phase change material is sodium acetate trihydrate.
[0043] The amount of the first solid-liquid phase change material in the aerosol generating device must be sufficient for the first solid-liquid phase change material to release sufficient thermal energy as it changes phase from a liquid to a solid, to heat the aerosol generating article to a desired operating temperature range of the aerosol generating system.
[0044] Preferably, the first solid-liquid phase change material in the aerosol generating device is configured to release at least about 250 J of thermal energy, more preferably at least about 500 J of thermal energy, as it changes. phase from a liquid to a solid.
[0045] In certain preferred embodiments, the first solid-liquid phase change material in the aerosol generating device is configured to release between about 250 J and about 1500 J of thermal energy, more preferably between about 500 J and about 1250 J of thermal energy, as the phase changes from a liquid to a solid.
[0046] Preferably, the first solid-liquid phase change material is configured to heat an aerosol generating article received in the cavity of the aerosol generating device by at least about 40 degrees Celsius. More preferably, the first solid-liquid phase change material is configured to heat an aerosol generating article received in the cavity of the aerosol generating device by at least about 40 degrees Celsius within about 10 seconds to about 15 seconds .
[0047] In certain preferred embodiments, the first solid-liquid phase change material is configured to heat an aerosol generating article received in the cavity of the aerosol generating device to between about 40 degrees Celsius and 60 degrees Celsius. In certain particularly preferred embodiments, the first solid-liquid phase change material is configured to heat an aerosol-generating article received in the cavity of the aerosol-generating device to between about 40 degrees Celsius and 60 degrees Celsius within about 10 degrees. seconds to about 15 seconds.
[0048] Preferably, the first solid-liquid phase change material is configured to release thermal energy for between about 3 minutes and about 10 minutes, as the phase changes from a liquid to a solid.
[0049] To reduce the risk of overheating the first solid-liquid phase change material by the heating means of the aerosol generating device, the aerosol generating device further comprises a second solid-liquid phase changing material, wherein the melting point of the second solid-liquid phase change material is greater than the melting point of the first solid-liquid phase change material.
[0050] The inclusion of a second solid-liquid phase change material is particularly advantageous where the heating means of the aerosol generating device comprises a heat sink or a heat exchanger configured to transfer thermal energy from a heat source for the first solid-liquid phase change material.
[0051] During use, once the first solid-liquid phase change material has changed phase from a solid to a liquid, the first solid-liquid phase change material can continue to absorb additional thermal energy heating means. This will cause the temperature of the first solid-liquid phase change material to continue to rise above its melting point and the absence of a second solid-liquid phase change material could result in the first material overheating. of solid-liquid phase change.
[0052] However, where the aerosol generating device comprises a second solid-liquid phase change material with a melting point greater than the first solid-liquid phase change material, the second material change material The solid-liquid phase will undergo a phase change from solid to liquid when the temperature of the first solid-liquid phase change material reaches the melting point of the second solid-liquid phase change material. As it undergoes phase change from solid to liquid, the second solid-liquid phase change material absorbs thermal energy. The second solid-liquid phase change material thus stores the amount of additional thermal energy absorbed by the first solid-liquid phase change material. This reduces the risk of overheating the first solid-liquid phase change material.
[0053] By reducing the risk of overheating the first solid-liquid phase change material, the inclusion of a second solid-liquid phase change material advantageously increases the operational life of the aerosol generating device.
[0054] Preferably, the melting point of the second solid-liquid phase change material is between 15 degrees Celsius and 25 degrees Celsius greater than the melting point of the first solid-liquid phase change material.
[0055] Preferably, the second solid-liquid phase change material has a melting point of between about 70 degrees Celsius and about 90 degrees Celsius.
[0056] Preferably, the second solid-liquid phase change material has a latent heat of fusion of at least about 150 kJ / kg, more preferably at least 200 kJ / kg.
[0057] Preferably, the second solid-liquid phase change material undergoes small volumetric changes in the phase change from a solid to a liquid and from a liquid to a solid.
[0058] Preferably, the second solid-liquid phase change material has a low vapor pressure in the desired operating temperature range of the aerosol generation system.
[0059] Preferably, the second solid-liquid phase change material is non-flammable.
[0060] Examples of second solid-liquid phase change materials suitable for use in aerosol generating devices according to the invention include, but are not limited to: organic phase change materials, such as paraffins; and inorganic phase change materials, such as inorganic salt hydrates.
[0061] Paraffins suitable for use as the second solid-liquid phase-changing material include, but are not limited to: triatriacontane, tetratriacontane, pentatriacontane, hexatriacontane, heptatriacontane, octatriacontane, nonatriacontane, tertracontane, hen tetracontane and dot tetracontane and dot tetracontane and dot tetracontane.
[0062] Inorganic salt hydrates suitable for use as the second solid-liquid phase change material include, but are not limited to: magnesium nitrate hexahydrate and magnesium chloride hexahydrate.
[0063] In preferred embodiments, the second solid-liquid phase change material is paraffin.
[0064] In particularly preferred embodiments, the second solid-liquid phase change material is hexatriacontane.
[0065] The second solid-liquid phase change material is in thermal contact with the first solid-liquid phase change material and with the heating means.
[0066] Preferably, the thermal energy is transferred from the heating media to the first solid-liquid phase change material through the second solid-liquid phase change material.
[0067] The second solid-liquid phase change material can be positioned upstream of the cavity and the first solid-liquid phase change material.
[0068] Alternatively, the second solid-liquid phase change material can be positioned over the perimeter of the cavity. In such embodiments, the second solid-liquid phase change material can be upstream of the first solid-liquid phase change material, downstream of the first solid-liquid phase change material or can circumscribe the first material of solid-liquid phase change.
[0069] The heating medium of the aerosol generating device is configured to heat the first solid-liquid phase change material to a temperature above the melting point of the first solid-liquid phase change material.
[0070] The heating means can be a non-electric heating means.
[0071] In certain preferred embodiments, the heating means comprises a heat sink or a heat exchanger configured to transfer thermal energy from an external heat source to the first solid-liquid phase change material. The heat sink or heat exchanger can be formed of any suitable thermally conductive material. Suitable materials include, but are not limited to, metals such as aluminum and copper.
[0072] In certain particularly preferred embodiments, the heating means comprises a heat sink or heat exchanger configured to transfer thermal energy from a blue flame or torch lighter or another lighter to the first phase change material. solid-liquid. In such embodiments, a user can advantageously use a lighter to activate the aerosol generation system in a manner similar to lighting a cigarette or other conventional smoking article.
[0073] The heat sink or heat exchanger is in thermal contact with the first solid-liquid phase change material. The heat sink or heat exchanger is also in thermal contact with the second solid-liquid phase change material. In such embodiments, the heat sink or heat exchanger, the first solid-liquid phase change material and the second solid-liquid phase change material are preferably configured so that thermal energy is transferred from the heat sink or heat exchanger for the second solid-liquid phase change material and then from the second solid-liquid phase change material to the first solid-liquid phase change material.
[0074] The heat sink or heat exchanger preferably extends downstream of the distal end or upstream of the aerosol generating device for the first solid-liquid phase change material.
[0075] In certain preferred embodiments, a heat sink or heat exchanger surrounds the first solid-liquid phase change material. For example, the heatsink or heat exchanger may comprise a thermally conductive hollow tube that surrounds the first solid-liquid phase change material.
[0076] Alternatively or additionally, the heat sink or heat exchanger can surround the second solid-liquid phase change material.
[0077] The heating means can be electrical heating means powered by an electrical energy source.
[0078] Where the heating medium is an electrical heating medium, the aerosol generating device may further comprise an electrical energy source and a controller comprising an electronic circuit configured to control the electrical energy source from the electrical energy source to the electric heating medium. Any suitable electronic circuit can be used to control the power source for the electrical heating media. The electronic circuit can be programmable.
[0079] Alternatively, the electrical heating means can be powered by an external electrical energy source.
[0080] The electrical power source can be a DC voltage source. In preferred modes, the source of electrical energy is a battery. For example, the source of electrical energy can be a nickel-metal hydride battery, a nickel-cadmium battery, or a lithium-based battery, for example, a lithium-cobalt, lithium-iron-phosphate battery or lithium-polymer. The electrical power source may alternatively be another form of electrical charge storage device, such as a capacitor. The source of electrical energy may need to be recharged and may have a capacity that allows the storage of sufficient electrical energy for use of the aerosol generating device with one or more aerosol generating articles.
[0081] The aerosol generating device may comprise a heating means comprising one or more heating elements. The one or more heating elements may extend wholly or partially along the length of the cavity of the aerosol generating device. The one or more heating elements may extend totally or partially around the circumference of the aerosol generating device cavity.
[0082] The aerosol generating device may further comprise a controller configured to independently control a source of energy to one or more heating elements.
[0083] In a preferred embodiment, the heating medium comprises one or more heating elements that are heated electrically. However, other heating schemes can be used to heat one or more heating elements. For example, the one or more heating elements can be heated by conducting another source of heat. Alternatively, the one or more heating elements can be infrared heating elements or inductive heating elements.
[0084] In a particularly preferred embodiment, the heating medium comprises one or more elements that comprise an electrically resistive material. Each heating element may comprise a non-elastic material, for example, a sintered ceramic material, such as alumina (Al2O3) and silicon nitride (Si3N4), or printed circuit board or silicon rubber. Alternatively, each heating element may comprise an elastic material, metallic material, for example, an iron alloy or a nickel-chromium alloy. The one or more heating elements can be flexible heating sheets on a dielectric substrate, such as polyimide. Alternatively, the one or more heating elements may be a metal grid or grids, flexible printed circuit boards, or flexible carbon fiber heaters.
[0085] Other suitable electrically resistive materials include, but are not limited to: semiconductors, such as doped ceramics, electrically "conductive" ceramics (such as, for example, molybdenum disilicide), carbon, graphite, metals, metal alloys and composite materials made of a ceramic material and a metallic material. Such composite materials can comprise doped or non-doped ceramics. Examples of suitable doped ceramics include doped silicon carbides. Examples of suitable metals include titanium, zirconium, tantalum and platinum group metals. Examples of suitable metal alloys include alloys of stainless steel, nickel, cobalt, chromium, aluminum, titanium, zirconium, hafnium, niobium, molybdenum, tantalum, tungsten, tin, gallium and manganese, and nickel-based superalloys, iron, cobalt, stainless steel, Timetal® and ferro-manganese-aluminum alloys. Timetal® is a registered trademark of Titanium Metals Corporation, 1999 Broadway Suite 4300, Denver, Colorado. In composite materials, the electrically resistive material can optionally be incorporated, encapsulated or coated with an insulating material or vice versa, depending on the energy transfer kinetics and the required external physical-chemical properties.
[0086] The aerosol generating device may further comprise a temperature sensor configured to sense the temperature of the first solid-liquid phase change material of the aerosol generating device.
[0087] In such embodiments, the aerosol generating device may comprise a controller configured to control an energy source for one or more heating elements based on the temperature of the first solid-liquid phase change material felt by the temperature sensor. temperature.
[0088] The heating medium can comprise one or more heating elements formed using a metal having a defined relationship between temperature and resistivity. In such embodiments, the metal can be formed as a rail between two layers of suitable insulation materials. The heating elements formed in this way can be used to heat and monitor the temperature of the first solid-liquid phase change material of the aerosol generating device.
[0089] The aerosol generating device may further comprise a housing containing the cavity, the first solid-liquid phase change material, the heating medium and the second solid-liquid phase change material, the controller and a power supply.
[0090] Preferably, the housing of the rossol generating device is substantially cylindrical.
[0091] The housing of the aerosol generating device can be designed to be compressed or held by a user.
[0092] In a preferred embodiment, the aerosol generating device is a cylindrical heating sleeve.
[0093] The heating medium, the first solid-liquid phase change material and the second solid-liquid phase change material can be spaced from the housing by an air gap or an insulation layer.
The aerosol generating devices according to the invention are preferably configured to receive an aerosol generating article comprising a first compartment comprising a source of volatile distribution enhancing compound and a second compartment comprising a nicotine source. However, it will be contemplated that aerosol generating devices, according to the invention, can be configured to receive other types of aerosol generating article.
[0095] The first compartment and the second compartment of the aerosol-generating article can lean against each other. Alternatively, the first compartment and the second compartment of the aerosol generating article can be spaced from each other.
[0096] The first compartment of the aerosol generating article can be sealed by one or more fragile barriers. In a preferred embodiment, the first compartment is sealed by a pair of opposite fragile transverse barriers.
[0097] Alternatively or additionally, the second compartment of the aerosol generating article can be sealed by one or more fragile barriers. In a preferred embodiment, the second compartment is sealed off by a pair of fragile opposing transverse barriers.
[0098] One or more fragile barriers can be formed from any suitable material. For example, one or more fragile barriers can be formed from a sheet or foil.
[0099] In such embodiments, the aerosol generating device preferably further comprises a piercing member positioned within the cavity of the aerosol generating device to pierce one or more fragile barriers, sealing one or both of the first compartment and the second compartment of the article aerosol generator. The drill member can be formed from any suitable material.
[00100] The volume of the first compartment and the second compartment can be the same or different. In a preferred embodiment, the volume of the second compartment is greater than the volume of the first compartment.
[00101] As described below, the first compartment and the second compartment can be arranged in series or in parallel within the aerosol generating article.
[00102] As used in this document, "series" means that the first compartment and the second compartment are arranged within the aerosol generating article so that, during use, a flow of air swallowed through the aerosol generating article passes through one of the first compartment and second compartment, and then pass through the other of the first compartment and second compartment. The vapor of the volatile distribution enhancement compound is released from the source of the volatile distribution enhancement compound in the first compartment in the air flow swallowed through the aerosol generating article and the nicotine vapor is released from the nicotine source in the second compartment to the flow of air swallowed through the aerosol generating article. The vapor of the volatile distribution enhancing compound reacts with the nicotine vapor in the gas phase to form an aerosol, which is distributed to a user.
[00103] Where the first compartment and the second compartment are arranged in series within the aerosol generating article, the second compartment can be downstream of the first compartment so that, during use, a flow of air swallowed through the aerosol generating article pass through the first compartment, then pass through the second compartment.
[00104] In such embodiments, the vapor of the volatile distribution enhancing compound may react with the nicotine vapor in the second compartment. In such embodiments, the aerosol generating article may further comprise a third compartment downstream of the second compartment and the vapor of the volatile distribution enhancing compound may, alternatively or additionally, react with the nicotine vapor in the third compartment to form an aerosol.
[00105] Alternatively, where the first compartment and the second compartment are arranged in series within the aerosol generating article, the second compartment can be upstream of the first compartment so that, during use, a flow of air swallowed through the generating article aerosol dispenser passes through the second compartment and then passes through the first compartment.
[00106] In such embodiments, the nicotine vapor may react with the vapor of the volatile distribution enhancing compound in the first compartment. In such embodiments, the aerosol generating article may further comprise a third compartment downstream of the first compartment and the volatile nicotine vapor may, alternatively or additionally, react with the vapor of the volatile distribution enhancing compound in the third compartment to form an aerosol. .
[00107] Where the first compartment and the second compartment are arranged in series within the aerosol generating article, the aerosol generating device may further comprise a piercing member positioned centrally within the cavity of the aerosol generating device, along the main axis of the cavity, to perforate the first and second compartments of the aerosol generating article.
[00108] As used in this document, by "parallel" is meant that the first compartment and the second compartment are disposed within the aerosol generating article so that, during use, a first flow of air swallowed through the aerosol generating article pass through the first compartment and a second flow of air swallowed through the aerosol generating article passes through the second compartment. The vapor of the volatile distribution enhancement compound is released from the source of the volatile distribution enhancement compound in the first compartment to the first flow of air swallowed through the aerosol generating article and the nicotine vapor is released from the nicotine source in the second compartment. for the second flow of air drawn through the aerosol generating article. The vapor of the volatile distribution enhancing compound in the first air flow reacts with the nicotine vapor in the second air flow in the gas phase to form an aerosol, which is distributed to a user.
[00109] In such embodiments, the aerosol generating article may further comprise a third compartment downstream of the first compartment and the second compartment and the vapor of the volatile distribution enhancing compound in the first air flow may mix and react with the vapor nicotine in the second air flow in the third compartment to form an aerosol.
[00110] Where the first compartment and the second compartment of the aerosol generating article are arranged in parallel within the aerosol generating article, the aerosol generating device may further comprise a piercing member comprising a first piercing element positioned within the cavity of the aerosol generating device for piercing the first compartment of the aerosol generating article and a second piercing element positioned within the cavity of the aerosol generating device for piercing the second compartment of the aerosol generating article.
[00111] In particularly preferred embodiments, the aerosol generating article comprises: a housing comprising: an air inlet; a first compartment in communication with the air inlet, the first compartment comprising a first from a source of the volatile distribution enhancing compound and a source of nicotine; a second compartment in communication with the first compartment, the second compartment comprising a second of the source of the volatile distribution enhancing compound and of the nicotine source; and an air outlet, where the air inlet and air outlet are in communication with each other and are configured so that air can pass to the housing through the air inlet, through the housing and out of the housing through the air exit.
[00112] As used in this document, the term "air inlet" is used to describe one or more openings through which air can be drawn into the aerosol generating article.
[00113] As used in this document, the term "air outlet" is used to describe one or more openings through which air can be drawn out of the aerosol generating article.
[00114] In such modalities, the first compartment and the second compartment are arranged in series from the air inlet to the air outlet inside the housing. That is, the first compartment is downstream of the air inlet, the second compartment is downstream of the first compartment and the air outlet is downstream of the second compartment. During use, an air flow is drawn into the housing through the air inlet, downstream through the first and second compartments and out of the housing through the air outlet.
[00115] In such embodiments, the first compartment may comprise the source of the volatile distribution enhancing compound and the second compartment may comprise the source of nicotine.
Alternatively, in such embodiments, the first compartment may comprise the source of nicotine and the second compartment may comprise the source of the volatile distribution enhancing compound.
[00117] The aerosol generating article may further comprise a third compartment in communication with: the second compartment; and the air outlet. During use in such modes, an air flow is drawn into the housing through the air inlet, downstream through the first compartment, the second and third compartments and out of the housing through the air outlet.
[00118] The aerosol generating article may further comprise a nozzle in communication with: the second compartment, or the third compartment, when present; and the air outlet. During use in such modalities, an air flow is drawn into the housing through the air inlet, downstream through the first compartment, the second compartment, the third compartment, when present, and the nozzle and out of the housing through the air exit.
[00119] In other preferred embodiments, the aerosol generating article comprises: a housing comprising: an air inlet; a first compartment in communication with the air inlet, the first compartment comprising a source of the volatile distribution enhancing compound; a second compartment in communication with the air inlet, the second compartment comprising a nicotine source; and an air outlet, where the air inlet and air outlet are in communication with each other and are configured so that air can pass to the housing through the air inlet, through the housing and out of the housing through the air exit.
[00120] In such modalities, the first compartment and the second compartment are arranged in parallel from the air inlet to the air outlet inside the housing. The first compartment and the second compartment are downstream of the air inlet and upstream of the air outlet. During use, an air flow is drawn into the housing through the air inlet, a first part of the air flow is drawn downstream through the first compartment and a second part of the air flow is drawn downstream through the second compartment .
[00121] The aerosol generating article may further comprise a third compartment in communication with: one or both the first compartment and the second compartment; and the air outlet.
[00122] The aerosol-generating article may further comprise a nozzle in communication with: the first compartment and the second compartment, or the third compartment, when present; and the air outlet.
[00123] In other preferred embodiments, the aerosol-generating article comprises: a housing comprising: a first air inlet; a first compartment in communication with the first air inlet, the first compartment comprising a source of the volatile distribution enhancing compound; a second compartment communicating with the second air inlet, the second compartment comprising a nicotine source; and an air outlet, in which the first air inlet, the second air inlet and the air outlet are in communication with each other and are configured so that air can pass to the housing through the first air inlet, through the housing and out of the housing through the air outlet and so that air can pass to the housing through the first air inlet, through the housing and out of the housing through the air outlet.
[00124] In such modalities, the first compartment and the second compartment are arranged in parallel inside the housing. The first compartment is downstream of the first air inlet and upstream of the air outlet and the second compartment is downstream of the second air inlet and upstream of the air outlet. During use, the first air flow is drawn into the housing through the first air inlet and downstream through the first compartment and a second air flow is drawn into the housing through the second air inlet and downstream through the second compartment.
[00125] The aerosol generating article may further comprise a third compartment in communication with: one or both the first compartment and the second compartment; and the air outlet.
[00126] The aerosol generating article may further comprise a nozzle in communication with: the first compartment and the second compartment, or the third compartment, when present; and the air outlet.
[00127] The housing of the aerosol-generating article can simulate the shape and dimensions of a smoking tobacco article, such as a cigarette, a cigar, a cigarillo or a pipe, or a pack of cigarettes. In a preferred embodiment, the housing simulates the shape and dimensions of a cigarette.
[00128] When present, the third compartment may comprise one or more aerosol modifying agents. For example, the third compartment may comprise an adsorbent, such as activated carbon, a flavor, such as menthol, or a combination thereof.
[00129] When present, the nozzle may comprise a filter. The filter may have a low particle filtration efficiency or a very low particle filtration efficiency. Alternatively, the nozzle may comprise a hollow tube.
[00130] The first compartment of the aerosol generating article comprises a source of the volatile distribution enhancing compound. As used herein, "volatile" is understood to mean that the distribution enhancing compound has a vapor pressure of at least about 20 Pa. Unless otherwise stated, all vapor pressures referred to in this document are steam at 25 ° C measured according to ASTM E1194 - 07.
[00131] Preferably, the volatile distribution enhancing compound has a vapor pressure of at least about 50 Pa, more preferably at least about 75 Pa, more preferably at least about 100 Pa at 25 ° C.
[00132] Preferably, the volatile distribution enhancing compound has a vapor pressure less than or equal to about 400 Pa, more preferably less than or equal to about 300 Pa, even more preferably less than or equal to about 275 Pa, more preferably less than or equal to about 250 Pa at 25 ° C.
[00133] In certain embodiments, the volatile distribution enhancing compound may have a vapor pressure of between about 20 Pa and about 400 Pa, more preferably between about 20 Pa and about 300 Pa, even more preferably between about 20 Pa and about 275 Pa, more preferably between about 20 Pa and about 250 Pa at 25 ° C.
[00134] In other embodiments, the volatile distribution enhancing compound may have a vapor pressure between about 50 Pa and about 400 Pa, more preferably between about 50 Pa and about 300 Pa, even more preferably between about 50 Pa and about 275 Pa, more preferably between about 50 Pa and about 250 Pa at 25 ° C.
[00135] In other embodiments, the volatile distribution enhancing compound may have a vapor pressure between about 75 Pa and about 400 Pa, more preferably between about 75 Pa and about 300 Pa, even more preferably between about 75 Pa and about 275 Pa, more preferably between about 75 Pa and about 250 Pa at 25 ° C.
[00136] In still other embodiments, the volatile distribution enhancing compound may have a vapor pressure between about 100 Pa and about 400 Pa, more preferably between about 100 Pa and about 300 Pa, more preferably between about 100 Pa and about 275 Pa, more preferably between about 100 Pa and about 250 Pa at 25 ° C.
[00137] The volatile distribution enhancing compound may comprise a single compound. Alternatively, the volatile distribution enhancing compound can comprise two or more different compounds.
[00138] When the volatile distribution enhancing compound comprises two or more different compounds, the two or more different compounds, in combination, have a vapor pressure of at least about 20 Pa at 25 ° C.
[00139] Preferably, the volatile distribution enhancing compound is a volatile liquid.
[00140] The volatile distribution enhancing compound may comprise a mixture of two or more different liquid compounds.
[00141] The volatile distribution enhancing compound may comprise an aqueous solution of one or more compounds. Alternatively, the volatile distribution enhancing compound may comprise a non-aqueous solution of one or more compounds.
[00142] The volatile distribution enhancing compound can comprise two or more different volatile compounds. For example, the volatile distribution enhancing compound may comprise a mixture of two or more different volatile liquid compounds.
[00143] Alternatively, the volatile distribution enhancing compound may comprise one or more non-volatile compounds and one or more volatile compounds. For example, the volatile distribution enhancing compound may comprise a solution of one or more non-volatile compounds in a volatile solvent or a mixture of one or more non-volatile liquid compounds and one or more volatile liquid compounds.
[00144] In one embodiment, the volatile distribution enhancing compound comprises an acid. The volatile distribution enhancing compound can comprise an organic acid or an inorganic acid. Preferably, the volatile distribution enhancing compound comprises an organic acid, more preferably a carboxylic acid, more preferably an alpha-keto or 2-oxo acid.
[00145] In a preferred embodiment, the volatile distribution enhancing compound comprises an acid selected from the group consisting of 3-methyl-2-oxopentanoic acid, pyruvic acid, 2-oxopentanoic acid, 4-methyl-2-oxopentanoic acid, 3-methyl-2-oxobutanoic acid, 2-oxo-octanoic acid and combinations thereof. In a particularly preferred embodiment, the volatile distribution enhancing compound comprises pyruvic acid.
[00146] In a preferred embodiment, the source of the volatile distribution enhancement compound comprises a sorption element and a volatile distribution enhancement compound sorbed onto the sorption element.
[00147] As used herein, "sorbed" is understood to mean that the volatile distribution enhancing compound is adsorbed on the surface of the sorption element, or absorbed on the sorption element, or adsorbed on and absorbed on the sorption element. Preferably, the volatile distribution enhancing compound is adsorbed onto the sorption element.
[00148] The sorption element can be formed by any suitable material or combination of materials. For example, the sorption element may comprise one or more of glass, stainless steel, aluminum, polyethylene (PE), polypropylene, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (ePTFE) ), and BAREX®.
[00149] In a preferred embodiment, the sorption element is a porous sorption element.
[00150] For example, the sorption element may be a porous sorption element comprising one or more materials selected from the group consisting of porous plastic materials, porous polymer fibers and porous glass fibers.
[00151] The sorption element is preferably chemically inert over the volatile distribution enhancing compound.
[00152] The sorption element can be of any suitable size and shape.
[00153] In a preferred embodiment, the sorption element is a substantially cylindrical plug. In a particularly preferred embodiment, the sorption element is a substantially cylindrical porous plug.
[00154] In another preferred embodiment, the sorption element is a substantially cylindrical hollow tube. In another particularly preferred embodiment, the sorption element is a substantially cylindrical, porous hollow tube.
[00155] The size, shape and composition of the sorption element can be chosen to allow a desired amount of the volatile distribution enhancing compound to be sipped on the sorption element.
[00156] In a preferred embodiment, between about 20 μl and about 200 μl, more preferably between about 40 μl and about 150 μl, more preferably between about 50 μl and about 100 μl of the distribution enhancing compound volatile are absorbed onto the sorption element.
[00157] The sorption element acts advantageously as a reservoir for the volatile distribution enhancing compound.
[00158] The second compartment of the aerosol generating article comprises a source of nicotine. The nicotine source may comprise one or more of nicotine, nicotine base, a nicotine salt, such as nicotine-HCl, nicotine bitartrate, or nicotine ditartrate, or a nicotine derivative.
[00159] The nicotine source may comprise natural nicotine or synthetic nicotine.
[00160] The nicotine source may comprise pure nicotine, a solution of nicotine in an aqueous or non-aqueous solvent, or a liquid tobacco extract.
[00161] The nicotine source may further comprise an electrolyte-forming compound. The electrolyte-forming compound can be selected from the group consisting of alkali metal hydroxides, alkali metal oxides, alkali metal salts, alkaline earth metal oxides, alkaline earth metal hydroxides and combinations thereof.
[00162] For example, the nicotine source may comprise an electrolyte-forming compound selected from the group consisting of potassium hydroxide, sodium hydroxide, lithium oxide, barium oxide, potassium chloride, sodium chloride, sodium carbonate , sodium citrate, ammonium sulfate and combinations thereof.
[00163] In certain embodiments, the nicotine source may comprise an aqueous solution of nicotine, nicotine base, a nicotine salt or a nicotine derivative and an electrolyte-forming compound.
[00164] Alternatively or in addition, the nicotine source may comprise other components, including, but not limited to, natural flavors, artificial flavors and antioxidants.
[00165] The nicotine source can comprise a sorption element and nicotine sorbed on the sorption element.
[00166] The aerosol generating article is preferably substantially cylindrical in shape.
[00167] The aerosol generating article may have a cross section in any suitable way.
[00168] Preferably, the aerosol generating article is of substantially circular cross-section or of substantially elliptical cross-section. More preferably, the aerosol generating article is of substantially circular cross-section.
[00169] The aerosol-generating article can simulate the shape and dimensions of a smoking tobacco article, such as a cigarette, a cigar, a cigarillo or a pipe, or a pack of cigarettes. In a preferred embodiment, the aerosol-generating article simulates the shape and dimensions of a cigarette.
[00170] For the avoidance of doubt, the characteristics described above in relation to one embodiment of the invention may also be applicable to another embodiment of the invention. In particular, the characteristics described above in relation to the aerosol generating devices according to the invention will also refer, where appropriate, to aerosol generating systems according to the invention, and vice versa.
[00171] The invention will be described below with reference to the accompanying figures, in which:
[00172] Figure 1 shows a schematic longitudinal cross section of an aerosol generation system according to a first embodiment of the invention;
[00173] Figure 2 shows the temperature of an aerosol generating device according to the first embodiment of the invention shown in Figure 1 as a function of time during operation; and
[00174] Figure 3 shows a comparison of the temperature of the aerosol generating device of Figure 2 and an aerosol generating device according to a second embodiment of the invention as a function of time during operation;
[00175] Figure 1 schematically shows an aerosol generating system according to a first embodiment of the invention comprising an aerosol generating article 2 and an aerosol generating device 4.
[00176] The aerosol generating article 2 has an elongated cylindrical shape and comprises a housing comprising a first compartment 6 comprising a source of the volatile distribution enhancing compound, a second compartment 8 comprising a source of nicotine, and a third compartment 10. As shown in Figure 1, the first compartment 6, the second compartment 8, and the third compartment 10 are arranged in series and in coaxial alignment within the aerosol generating article 2. The first compartment 6 is located at the distal end or the upstream of the aerosol generating article 2. The second compartment 8 is located immediately downstream and abuts the first compartment 6. The third compartment 10 is located downstream of the second compartment 8 at the proximal end or downstream of the aerosol generating article 2. In at or beyond the third compartment 10, the aerosol generating article 2 may comprise a nozzle at the proximal or downstream.
[00177] The ends upstream and downstream of the first compartment 6 and the second compartment 8 of the aerosol generating article 2 are sealed by fragile barriers (not shown).
[00178] The aerosol generating device 4 comprises a housing 12 comprising an elongated cylindrical cavity in which the aerosol generating article 2 is received, a heat exchanger 14, a first solid-liquid phase change material 16 and a second solid-liquid phase change material 18.
[00179] The aerosol generating device 4 further comprises a piercing member 20 positioned centrally within the cavity of the aerosol generating device 4 and extending along the main axis of the cavity.
[00180] As shown in Figure 1, the length of the cavity is less than the length of the aerosol generating article 2 so that the proximal or downstream end of the aerosol generating article 2 protrudes from the cavity.
[00181] In the aerosol generation system, according to the first embodiment of the invention, the first solid-liquid phase change material 16 is positioned over the perimeter of the cavity and extends partially along the length of the cavity and all - specifically around the circumference of the cavity. The second solid-liquid phase change material 18 is positioned upstream of the first solid-liquid phase change material 16 at the distal end or upstream of the cavity.
[00182] The heat exchanger 14 comprises a matrix of thermally conductive burrs located at the distal end or upstream of the aerosol generating device 4 and a thermally conductive hollow tube in thermal contact with the matrix of thermally conductive burrs. As shown in Figure 1, the thermally conductive hollow tube surrounds the first solid-liquid phase change material 16 and the second solid-liquid phase change material 18.
[00183] During use, as the aerosol generating article 2 is inserted into the cavity of the aerosol generating device 4, the drilling member 20 of the aerosol generating device 4 is inserted into the aerosol generating article 2 and pierces the fragile barriers ( not shown) at the upstream and downstream ends of the first compartment 6 and the second compartment 8 of the aerosol generating article 2. This allows a user to draw air into the housing of the aerosol generating article 2 through the distal or upstream end of the same, downstream through the first compartment 6, the second compartment 8 and the third compartment 10 and out of the carcass through the proximal end or downstream of the same.
[00184] Once the aerosol generating article 2 is inserted into the cavity of the aerosol generating device 4, the thermally conductive burr matrix of the heat exchanger 14 is heated using a blue flame or torch lighter. The thermal energy is transferred from the thermally conductive burr matrix to the first solid-liquid phase change material 16 through the hollow conductive tube of the heat exchanger 14. The thermal energy is absorbed by the first solid phase change material- liquid 16, causing the temperature of the first solid-liquid phase change material 16 to rise. When the temperature reaches the melting temperature of the first solid-liquid phase change material 16 the first solid-liquid phase change material 16 stores thermal energy as it changes phase from a solid to a liquid.
[00185] Once liquid, the temperature of the first solid-liquid phase change material 16 will continue to rise after further heating of the thermally conductive burr matrix of the heat exchanger 14 by the blue flame or torch lighter. However, when the temperature of the first solid-liquid phase change material 16 reaches the melting temperature of the second solid-liquid phase change material 18, the second solid-liquid phase change material 18 will store energy thermal as it changes phase from a solid to a liquid. This stores the amount of thermal energy transferred to the first solid-liquid phase change material 16 and thus prevents overheating of the first solid-liquid phase change material 16.
[00186] The heating of the thermally conductive burrs matrix of the heat exchanger 14 by the blue flame or torch lighter is discontinued before the second solid-liquid phase change material 18 completes the phase change from a solid to a liquid . Since the heating of the thermally conductive burrs matrix of the heat exchanger 14 by the blue flame or torch lighter is discontinued, the temperature of the first solid-liquid phase change material 16 decreases. After reaching its melting temperature, the first solid-liquid phase change material 16 releases the stored thermal energy as it changes phase from a solid to a liquid. The stored thermal energy released by the first solid-liquid phase change material 16, as it solidifies, heats the first compartment 6 and the second compartment 8 of the aerosol generating article 2 received in the cavity of the aerosol generating device 4 during a extended period of time.
[00187] As the user draws air through the aerosol generating article 2, the vapor of the volatile distribution enhancing compound is released from the source of the volatile distribution enhancing compound in the first compartment 6 in the air flow swallowed through the generating article. of aerosol 2 and the nicotine vapor is released from the nicotine source in the second compartment 8 in the air flow swallowed through the aerosol generating article 2. The vapor of the volatile distribution enhancing compound reacts with the nicotine vapor in the gas phase in the second compartment 8 and in the third compartment 10 to form an aerosol, which is distributed to the user through the proximal or downstream end of the aerosol generating article 2.
[00188] The heat exchanger 14 of an aerosol generating device 4, according to the first embodiment of the invention, shown in Figure 1, in which the first solid-liquid phase change material 16 is sodium acetate tri -hydrate and the second solid-liquid phase change material 18 is hexatriacontane, is heated for 10 seconds using a blue flame or torch lighter, as described above. The temperature of the aerosol generating device 4 is measured as a function of time using a thermocouple positioned between the aerosol generating device 4 and an aerosol generating article 2 received in the cavity of the aerosol generating device 4 in a position halfway along the length of the first compartment 6 of the aerosol generating article 2. The measurement is repeated six times. The results are shown in Figure 2.
[00189] As shown in Figure 2, the temperature profiles obtained for the six measurements are extremely similar. This demonstrates the reproducibility of the temperature profile of the aerosol generating device, according to the invention in use.
[00190] In each case, after heating the heat exchanger 14 by the blue flame or torch lighter, the temperature of the aerosol generating device 4 rises from the ambient temperature to approximately 70 degrees Celsius in about 8 seconds. During this time, sodium acetate trihydrate (the first solid-liquid phase change material 16) changes phase from a solid to a liquid at a temperature of approximately 57 degrees Celsius. Once the heating of the heat exchanger 14 by the blue flame or torch lighter is discontinued, the temperature of the sodium acetate trihydrate begins to decrease. After approximately 150 seconds, the temperature decrease of the sodium acetate trihydrate is sufficient for the sodium acetate trihydrate to change phase from a liquid to a solid. As sodium acetate trihydrate changes phases from a liquid to a solid, it releases thermal energy over a period of approximately 100 seconds to 150 seconds. The temperature of the aerosol generating device therefore remains above 40 degrees Celsius for a total of more than 300 seconds.
[00191] The heat exchanger 14 of an aerosol generating device 4, according to the first embodiment of the invention, shown in Figure 1, in which the first solid-liquid phase change material 16 is sodium acetate tri -hydrate and the second solid-liquid phase change material 18 is hexatriacontane, is heated for 8 seconds using a blue flame or torch lighter, as described above. The temperature of the aerosol generating device 4 is measured as a function of time using a thermocouple positioned between the aerosol generating device 4 and an aerosol generating article 2 received in the cavity of the aerosol generating device 4 in positions (i) at the upstream end the first compartment 6 of the aerosol generating article 2, (ii) at the downstream end of the first compartment 6 of the aerosol generating article 2 and (iii) at the downstream end of the second compartment 8 of the aerosol generating article 2. For comparison, the heat exchanger 14 of the aerosol generating device 4, according to a second embodiment of the invention, of identical construction, but in which hexatriacontane (second solid-liquid phase change material 18) is omitted, is heated by 8 seconds using a blue flame or torch lighter, as described above, and the temperature of the aerosol generating device 4 is measured as a function of time using a thermocouple positioned between the dia aerosol generating device 4 and an aerosol generating article 2 received in the cavity of the aerosol generating device 4 in positions (i) at the upstream end of the first compartment 6 of the aerosol generating article 2, (ii) at the downstream end of the first compartment 6 of the aerosol generating article 2 and (iii) at the downstream end of the second compartment 8 of the aerosol generating article 2. The results are shown in Figure 3.
[00192] As shown in Figure 3, the maximum temperature of the aerosol generating device 4, according to the first embodiment of the invention, (i) at the upstream end of the first compartment 6 of the aerosol generating article 2, (ii) at the downstream end of the first compartment 6 of the aerosol generating article 2 and (iii) at the downstream end of the second compartment 8 of the aerosol generating article 2, is reduced in comparison to the aerosol generating device 4, according to the second embodiment of the invention. In particular, the inclusion of hexatriacontane (second solid-liquid phase change material 18) in the aerosol generating device 4, according to the first embodiment of the invention, reduces the maximum temperature of the aerosol generating device 4, according to the first embodiment of the invention (i) at the upstream end of the sodium acetate trihydrate (first solid-liquid phase change material 16) below the decomposition temperature of the sodium acetate trihydrate.
[00193] The invention has been exemplified above by reference to an aerosol generating system comprising an aerosol generating article comprising a first compartment and a second compartment arranged in series within the aerosol generating article. However, it will be contemplated that the aerosol generating systems according to the invention may comprise aerosol generating articles comprising a first compartment and a second compartment arranged in parallel within the aerosol generating article.
[00194] The invention has also been exemplified above by reference to an aerosol generating device comprising a heat exchanger configured to heat the first solid-liquid phase change material to a temperature above the melting point of the first change material of solid-liquid phase. However, it will be contemplated that the aerosol generating devices according to the invention may comprise other types of heating means. In particular, it will be contemplated that the aerosol generating devices according to the invention may comprise an electric heater comprising one or more electrically resistive heating elements configured to heat the first solid-liquid phase change material to a temperature above from the melting point of the first solid-liquid phase change material.

权利要求:
Claims (15)
[0001]
1. Aerosol generating device (4) for use in an aerosol generating system, the aerosol generating device comprising: a cavity configured to receive an aerosol generating article (2); a first solid-liquid phase change material (16) positioned over a perimeter of the cavity; heating means (14) configured to heat the first solid-liquid phase change material (16) to a temperature above the melting point of the first solid-liquid phase change material (16); characterized by the fact that it also comprises a second solid-liquid phase change material (18), in which the melting point of the second solid-liquid phase change material (18) is greater than the melting point of the first solid-liquid phase change material (16).
[0002]
2. Aerosol generating device according to claim 1, characterized by the fact that the first solid-liquid phase change material (16) has a melting point between 30 degrees Celsius and 70 degrees Celsius.
[0003]
3. Aerosol generating device according to claim 1 or 2, characterized by the fact that the first solid-liquid phase change material (16) is sodium acetate trihydrate.
[0004]
4. Aerosol generating device according to claim 1, 2 or 3, characterized by the fact that the melting point of the second solid-liquid phase change material (18) is between 15 degrees Celsius and 25 degrees Celsius greater than the melting point of the first solid-liquid phase change material (16).
[0005]
5. Aerosol generating device according to any one of claims 1 to 4, characterized in that the second solid-liquid phase change material (18) has a melting point between 70 degrees Celsius and 90 degrees Celsius .
[0006]
An aerosol-generating device according to any one of claims 1 to 5, characterized in that the second solid-liquid phase-changing material (18) is hexatriacrane.
[0007]
Aerosol generating device according to any one of claims 1 to 6, characterized in that the heating means (14) comprises a heat exchanger.
[0008]
Aerosol generating device according to any one of claims 1 to 6, characterized in that the heating means (14) comprises an electric heater.
[0009]
An aerosol generating system characterized by the fact that it comprises an aerosol generating device (4), as defined in any one of claims 1 to 8, and an aerosol generating article (2).
[0010]
An aerosol generating system comprising an aerosol generating device, as defined in any one of claims 1 to 8, and an aerosol generating article (2), characterized by the fact that the aerosol generating article (2) comprises: a first compartment (6) comprising a source of volatile distribution enhancing compound; and a second compartment (8) comprising a nicotine source.
[0011]
11. Aerosol generation system, according to king-vindication 10, characterized by the fact that the volatile distribution improvement compound comprises an acid.
[0012]
12. Aerosol generation system, according to king-vindication 11, characterized by the fact that the acid is selected from the group consisting of 3-methyl-2-oxovaleric acid, pyruvic acid, 2-oxovaleric acid, 4- methyl-2-oxovaleric, 3-methyl-2-oxobutanoic acid, 2-oxo-octanoic acid and combinations thereof.
[0013]
13. Aerosol generation system, according to the vindication king 12, characterized by the fact that the acid is pyruvic acid.
[0014]
An aerosol generation system according to any one of claims 10 to 13, characterized in that one or both of the first compartment and the second compartment of the aerosol generating article are sealed by one or more fragile seals.
[0015]
An aerosol generation system according to any one of claims 10 to 14, characterized in that the aerosol generating device further comprises: a perforation member (20) positioned within the cavity to perforate the first compartment (6 ) and the second compartment (8) of the aerosol generating article (2).

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同族专利:

公开号 | 公开日

EP2967135A1|2016-01-20|

KR102202787B1|2021-01-15|

NZ709152A|2017-11-24|

AR094333A1|2015-07-29|

RU2015144021A|2017-04-26|

RS55991B1|2017-09-29|

EP2967135B1|2017-03-29|

MX365841B|2019-06-17|

PL2967135T3|2017-09-29|

MX2015013054A|2016-05-05|

IL239210D0|2015-07-30|

AU2013382373B2|2017-11-02|

KR20150132112A|2015-11-25|

TW201434403A|2014-09-16|

LT2967135T|2017-04-25|

PH12015501248A1|2015-08-17|

CN105188425A|2015-12-23|

CA2898248C|2020-08-25|

BR112015019821A2|2017-07-18|

US20160021932A1|2016-01-28|

CA2898248A1|2014-09-18|

SI2967135T1|2017-05-31|

US10010112B2|2018-07-03|

RU2642520C2|2018-01-25|

HK1214928A1|2016-08-12|

SG11201507630SA|2015-10-29|

JP6227679B2|2017-11-08|

DK2967135T3|2017-05-08|

JP2016508744A|2016-03-24|

PT2967135T|2017-07-13|

PH12015501248B1|2015-08-17|

ES2623157T3|2017-07-10|

IL239210A|2018-12-31|

WO2014139611A1|2014-09-18|

ZA201503982B|2016-04-28|

UA116127C2|2018-02-12|

CN105188425B|2017-10-03|

MY171838A|2019-11-01|

HUE032524T2|2017-09-28|

AU2013382373A1|2015-10-29|

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法律状态:
2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2019-10-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2020-09-15| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

2020-12-29| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2021-03-02| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/12/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

EP13159401|2013-03-15|

EP13159401.2|2013-03-15|

PCT/EP2013/077890|WO2014139611A1|2013-03-15|2013-12-23|Aerosol-generating device comprising multiple solid-liquid phase-change materials|

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