巴西专利BR112014013524B1 AEROSOL GENERATOR DEVICE, CARTRIDGE AND AEROSOL GENERATOR SYSTEM

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专利摘要:
aerosol generating device that has an internal heater. an aerosol generating device is provided to heat an aerosol-forming substrate. the device comprises a storage part (101) for storing aerosol-forming substrate and a vaporizer (105; 105 ') for heating the aerosol-forming substrate to form an aerosol. the storage part (101) has an outer shell and an inner passage (103), the storage part forming a reservoir for the aerosol forming substrate between the outer shell and the inner passage; and the vaporizer (105, 105 ') extends at least partially into the internal passage (103) in the storage part (101). the device further comprises a porous interface (107) which at least partially lines the internal passage (103) for transporting the aerosol forming substrate from the storage part (101) towards the vaporizer (105; 105 ').
公开号:BR112014013524B1
申请号:R112014013524-0
申请日:2012-12-05
公开日:2021-04-06
发明作者:Flaviem Dubief；Olivier Yves Cochand；Michel THORENS；Jean-Marc Flick；Yvan Degoumois
申请人:Philip Morris Products S.A.；
IPC主号:

专利说明:

[0001] [001] The present invention relates to an aerosol generating device for heating an aerosol-forming substrate. Particularly, but not exclusively, the present invention relates to an electrically driven aerosol generating device for heating a liquid aerosol-forming substrate.
[0002] [002] WO-A-2009/132793 discloses an electrically heated smoking device. A liquid is stored in a liquid storage part, and a capillary wick has a first end that extends into the liquid storage part to contact the liquid contained therein, and a second end that extends out of the part liquid storage. A heating element heats the second end of the capillary wick. The heating element is in the form of a spiral-wound electric heating element electrically connected to a power source, and around the second end of the capillary wick. In use, the heating element can be activated by the user to turn on the power supply. The suction on the nozzle by the user causes the air to be drawn into the electrically heated smoking device over the capillary wick and the heating element and, subsequently, into the user's mouth.
[0003] [003] It is an objective of the present invention to improve aerosol generation in an aerosol generating device or system.
[0004] [004] In accordance with an aspect of the present invention, an aerosol generating device is provided which comprises: a storage part for storing an aerosol-forming substrate, the storage part having an outer shell and an internal passage, the storage part forming a reservoir for the aerosol forming substrate between the outer shell and the inner passage; a vaporizer for heating the aerosol-forming substrate to form an aerosol, the vaporizer, at least partially, within the internal passage in the storage part; and a porous interface at least partially covering the internal passageway for transporting the aerosol-forming substrate from the storage portion towards the vaporizer.
[0005] [005] The aerosol generating device is arranged to vaporize an aerosol-forming substrate to form the aerosol. The aerosol generating device can include the aerosol-forming substrate or can be adapted to receive the aerosol-forming substrate. As is known to those skilled in the art, an aerosol is a suspension of solid particles or droplets of liquid in a gas, such as air.
[0006] [006] According to another aspect of the invention, a cartridge is provided which comprises: a storage part for storing an aerosol forming substrate, the storage part having an outer shell and an internal passage, the storage part forming a reservoir for the aerosol forming substrate between the outer shell and the inner passage; a vaporizer for heating the aerosol-forming substrate to form an aerosol, the vaporizer, at least partially, within the internal passage in the storage part; and a porous interface at least partially covering the internal passageway for transporting the aerosol-forming substrate from the storage portion towards the vaporizer.
[0007] [007] The aerosol generating device and the cartridge can cooperate to provide an aerosol generating system to heat the aerosol forming substrate. The cartridge or the aerosol generating device may comprise the storage part having the internal passageway. The vaporizer and the porous interface can be contained in the aerosol generating device. The vaporizer and the porous interface can also be contained in the cartridge.
[0008] [008] The aerosol generating device may comprise the vaporizer for heating the aerosol-forming substrate. Alternatively or in addition, the aerosol generating device may include the porous interface. The aerosol generating device may comprise the storage portion for storing the aerosol forming substrate.
[0009] [009] The cartridge may comprise the vaporizer for heating the aerosol-forming substrate. Alternatively or additionally, the cartridge can include the porous interface. The cartridge may comprise the storage portion for storing the aerosol forming substrate.
[0010] [0010] According to another aspect of the invention, an aerosol generating system is provided which comprises: an aerosol generating device and cartridge, the aerosol generating device or cartridge comprising: A storage part for storing a substrate aerosol forming means, the storage part having an internal passage; a vaporizer for heating the aerosol-forming substrate to form an aerosol, the vaporizer, at least partially, within the internal passage in the storage part; and a porous interface covering at least partially the internal passage for transporting the aerosol forming substrate from the storage part towards the vaporizer.
[0011] [0011] For all aspects of the invention, the storage part can be a liquid storage part. For all aspects of the invention, the aerosol-forming substrate can be an aerosol-forming liquid substrate. The aerosol-forming substrate may contain nicotine. The aerosol forming substrate can be adsorbed, coated, impregnated or otherwise loaded onto a carrier or support.
[0012] [0012] The aerosol forming substrate can alternatively be any other type of substrate, for example, a gas substrate or a gel substrate, or any combination of various types of substrate. The aerosol forming substrate can be a solid substrate.
[0013] [0013] The porous interface can be arranged to be in contact with the aerosol-forming liquid substrate in the liquid storage part. In one embodiment, the liquid substrate that forms the aerosol at the porous interface is vaporized by the heater to form supersaturated vapor. Supersaturated steam is mixed with air. Supersaturated steam condenses to form the aerosol and the aerosol is carried to a user's mouth. The aerosol-forming liquid substrate has appropriate physical properties, including surface tension and viscosity, that allow the liquid to be transported through the porous interface.
[0014] [0014] In the present invention, the vaporizer, at least partially, extends within the internal passage of the storage part. By having the vaporizer, at least partially, inside the internal passage, a number of advantages can be found. First, the manufacture and assembly of the aerosol generating device and the cartridge is easier and faster due to the simplified design of the parts. Second, because the vaporizer extends at least partially within the internal passage of the storage part instead of downstream of the storage part, the length of the aerosol generating device and the cartridge can be optionally reduced. Third, because the vaporizer extends at least partially within the internal passage of the storage part, the vaporizer can be protected from damage, bending, or deformation. Fourthly, the storage part can act as an insulator which, if the vaporizer comprises a heater, can prevent it from overheating the housing of the aerosol generating device. Fifth, because the porous interface at least partially lines the internal passage, gravity can help transport the liquid from the storage part and this reduces the chance of the porous interface drying out. Finally, any aerosol that condenses after formation can be used again through the porous interface, thereby reducing waste and leakage.
[0015] [0015] The storage part can protect the aerosol-forming substrate from ambient air (because air, in general, cannot enter the storage part). The storage portion can protect the aerosol-forming substrate from light, so that the risk of degradation of the aerosol-forming substrate is significantly reduced. On the other hand, a high level of hygiene can be maintained. The storage part cannot be refillable. Thus, when the aerosol-forming substrate in the storage part has been consumed, the aerosol generating device or cartridge is replaced. Alternatively, the storage part can be refillable. In that case, the aerosol generating device or the cartridge can be replaced after a certain number of refills of the storage part. The storage part can be arranged to store aerosol-forming substrate for a predetermined number of puffs. Therefore, the volume of the storage part can be expanded or contracted based on the number of puffs desired.
[0016] [0016] In one embodiment, the storage part comprises a container. Preferably, the container has a shape of constant cross-section and size throughout its length. The storage part preferably has an outer dimension that defines the exterior of the storage part. The external dimension can be substantially the same as the size of the aerosol generating device, thereby allowing the storage part to cooperate effectively with the aerosol generating device. Preferably, the internal passage has a shape of constant cross-section and size along its length. Preferably, the inner passage is aligned with the longitudinal axis of the storage part. This means that, preferably, the internal passage is a central passage. Alternatively, the internal passage may not be aligned with the longitudinal axis of the storage part. That is, the internal passage may be outside the center. The storage part preferably has an internal dimension that defines the size of the internal passage.
[0017] [0017] In a preferred embodiment, the storage part comprises a prism-shaped container that has an annular cross section, where the inner radius of the ring is the radius of the inner passage of the container, and the outer radius of the ring defines the outside of the container.
[0018] [0018] Preferably, in use, the liquid is transferred from the storage part to the vaporizer through the porous interface. The construction of the vaporizer can allow it to be used with a variety of different shapes and sizes of storage part. The internal side of the porous interface may be in contact with the liquid in the storage part. The outer side of the porous interface may be in contact with or adjacent to the vaporizer. In one embodiment, the liquid on the outside of the porous interface is vaporized to form the supersaturated vapor. The aerosol-forming liquid substrate has appropriate physical properties, including surface tension and viscosity, that allow the liquid to be transported through the porous interface.
[0019] [0019] The porous interface can comprise any suitable material or combination of materials, which is capable of transporting the aerosol-forming substrate towards the vaporizer. The porous interface may comprise a capillary material, but this need not be the case. The porous interface can have a fibrous or spongy structure. The porous interface can comprise a bundle of capillaries. For example, the porous interface can comprise a plurality of fibers or filaments or other fine gauge tubes. Alternatively, the porous interface may comprise sponge-like or foam-like material. The porous interface structure can form a plurality of small holes or tubes, through which the aerosol-forming substrate can be transported by capillary action from the storage part towards the vaporizer. The particularly preferred porous material or materials will depend on the appropriate physical properties of the aerosol forming substrate. Examples of suitable porous materials include a sponge or foam material, ceramic or graphite-based materials in the form of sintered fibers or powders, ceramic or graphite-based materials in the form of sintered fibers or powders, metallic or plastic foamed material, a fibrous material, for example, made from spun or extruded fibers, such as cellulose acetate, polyester, or adhered polyolefin, polyethylene, Terylene® or polypropylene, nylon or ceramic fibers. The porous interface can have any suitable porosity, in order to be used with different liquids. The liquid has adequate physical properties and certain parameters need to be taken into account, including, but not limited to, viscosity, surface tension, density, thermal conductivity, boiling point and vapor pressure, which allow the liquid to be transported through the porous interface. The porous interface can take any form suitable for cooperating with the storage part. Preferably, the porous interface has the same shape and dimension as the internal passageway, thereby allowing the porous interface to fit comfortably in the internal passageway. Preferably, the porous interface fully covers the internal passageway. However, the porous interface can only partially coat the internal passage.
[0020] [0020] In a preferred embodiment, in which the storage part comprises a container in the form of a prism that has an annular cross section. Preferably, the porous interface comprises a hollow tube of porous material, the outer dimension of the hollow tube being substantially equal to the diameter of the internal passage of the storage part. The tube of porous material may extend along all or part of the length of the internal passage in the storage part.
[0021] [0021] The vaporizer can be a heater. The heater can heat the aerosol-forming substrate by one or more means of conduction, convection and radiation. The heater can be an electric heater powered by an electrical power source. The heater may alternatively be powered by a non-electrical energy source, such as combustible material: for example, the heater may comprise a thermally conductive element which is heated by the combustion of a combustible gas. The heater can heat the aerosol-forming substrate by means of conduction and can be at least partially in contact with the substrate, which or a carrier on which the substrate is deposited. Alternatively, the heat from the heater can be conducted to the substrate by means of an intermediate heat conducting element. Alternatively, the heater can transmit heat to the ambient air that is sucked in through the aerosol generation system during use, which in turn heats the aerosol-forming substrate by convection.
[0022] [0022] In a preferred embodiment, the aerosol generating device is electrically operated and the vaporizer of the aerosol generating device comprises an electric heater to heat the aerosol forming substrate.
[0023] [0023] The electric heater may comprise a single heating element. Alternatively, the electric heater may comprise more than one heating element, for example, two, or three, or four, or five, or six or more heating elements. The heating element or heating elements may be suitably arranged so as to more effectively heat the aerosol forming substrate.
[0024] [0024] At least one electrical heating element, preferably comprises an electrically resistive material. Suitable electrically resistive materials include, but are not limited to: semiconductors, 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 stainless steel, Constantan®, nickel, cobalt, chromium, aluminum - titanium - zirconium, hafnium, niobium, molybdenum, tantalum tungsten, tin, gallium, manganese and alloys containing iron, and base alloys. nickel, iron, cobalt, stainless steel, Timetal ®, iron and aluminum based alloys ferro-manganese-aluminum based 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. The heating element may comprise a sheet of metal engraved with insulation between two layers of an inert material. In that case, the inert material may comprise Kapton ®, all made of polyimide or mica sheet. Kapton ® is a registered trademark of E.l. du Pont de Nemours & Company, 1007 Market Street, Wilmington, Delaware 19898, United States of America.
[0025] [0025] Alternatively, at least one electric heating element can comprise an infrared heating element, a photonic source or an inductive heating element.
[0026] [0026] At least one electric heating element can take any suitable shape. For example, at least one electric heating element can take the form of a heating blade or heating needles or rods. Alternatively, at least one electrical heating element can take the form of a shell or substrate having different electroconductive parts, or an electrically resistive metal tube. The liquid storage part may incorporate a disposable heating element. The at least one electric heating element may comprise a sheet of flexible material. Other alternatives include a heating wire or filaments, for example, a Ni-Cr (nickel-chromium) wire, platinum, tungsten or alloy wire, or a heating plate. Optionally, the heating element can be deposited inside or on a rigid support material.
[0027] [0027] At least one electrical heating element may comprise a heat sink, or heat reservoir, comprising a material capable of absorbing and storing heat and subsequently releasing heat over time to heat the aerosol-forming substrate. The heat sink can be formed of any suitable material, such as a suitable metal or ceramic material. Preferably, the material has a high heat capacity (heat sensitive storage material), or is a material capable of absorbing and subsequently releasing heat through a reversible process, such as a high temperature phase change. Suitable heat sensitive storage materials include silica gel, alumina, carbon, glass mat, fiberglass, minerals, a metal or alloy such as aluminum, silver, lead, and a cellulose material. Other suitable materials that release heat through a reversible phase change include paraffin, sodium acetate, naphthalene, wax, polyethylene oxide, a metal, metal salt, a mixture of eutectic salts or an alloy.
[0028] [0028] The heat sink can be arranged in such a way that it is directly in contact with the aerosol-forming substrate at the porous interface and can transfer the stored heat directly to the aerosol-forming substrate. Alternatively, the heat stored in the heat sink or heat sink can be transferred to the aerosol-forming substrate at the porous interface by means of a heat conductor, such as a metal tube.
[0029] [0029] At least one heating element can heat the aerosol-forming substrate by means of conduction. The heating element can be at least partially in contact with the aerosol forming substrate. Alternatively, the heat from the heating element can be conducted to the aerosol-forming substrate by means of a heat conductor.
[0030] [0030] Alternatively or additionally, the at least one heating element can transfer heat to the ambient air that is sucked in through the aerosol generation system during use, which in turn heats the aerosol-forming substrate by convection. Ambient air can be heated before passing through the aerosol-forming substrate. Alternatively, ambient air can be drawn in first through the aerosol-forming substrate and then heated.
[0031] [0031] In a preferred embodiment in which the vaporizer comprises an electric heater, the electric heater comprises: A first electrical connection part; a second electrical connection part; and a heating filament between the first and second electrical connection parts.
[0032] [0032] In one embodiment, when the device is in use with the cartridge the first electrical connection part is located at a first end of the internal passage, the second electrical connection part is located at a second end of the internal passage, and the heating filament has a first end connected to the first electrical connection part and a second end connected to the second electrical connection part. In this embodiment, the first electrical connection part, the second connection part and the heating filament are manufactured separately and are then connected together, for example, by welding. The heating filament may comprise a heating coil between the first and second electrical connection parts. Other forms for the heating filament are also possible.
[0033] [0033] All parts of the heating filament can have the same shape in cross section and area. Alternatively, some parts of the heating filament may have a different cross-sectional shape or area than other parts of the heating filament.
[0034] [0034] In an alternative embodiment, the electric heater comprises a sheet of electrically resistive material molded to form the first electrical connection part, the second electrical connection part and the heating filament. In this embodiment, the first electrical connection part, the second electrical connection part and the heating filament are formed integrally from the sheet of electrically resistive material. The term "integrally formed" refers to the first part of the electrical connection, the second part of the electrical connection and the heating filament being manufactured as a single piece from a single piece of material. Providing an integrated electric heater simplifies the manufacture of the heater.
[0035] [0035] The sheet of electrically resistive material can have any suitable shape. The heating filament, the first electrical connection part and the second electrical connection part can be formed by molding the sheet of electrically resistive material. For example, the heating filament can be cut from the sheet of electrically resistive material, for example, by a laser or by a chemical or electrical processor, by a high pressure water jet. Alternatively, the heating filament can be preformed in the desired shape.
[0036] [0036] The sheet of electrically resistive material can be a sheet of flexible material. Preferably, the sheet of flexible material is folded, rolled, curved or flexed to form the electric heater, which is correctly shaped to extend through the internal passage of the liquid storage part. The sheet of electrically resistive material can have any suitable flexibility.
[0037] [0037] The heating filament can take the form of a square wave that extends between the electrical connection parts. That is to say, the heating filament may comprise parts that extend substantially parallel to the longitudinal axis of the inner passage and parts that extend substantially perpendicular to the longitudinal axis of the inner passage. The number and size of the parts extending substantially parallel to the longitudinal axis of the internal passage can be changed. The number and size of the parts that extend substantially perpendicular to the longitudinal axis of the internal passage can be changed. This will affect the maximum flexibility of the heating element. Alternatively, the heating filament can have any other suitable shape.
[0038] [0038] All parts of the heating filament can have the same shape in cross section and area. Alternatively, some parts of the heating filament may have a different cross-sectional shape or area than other parts of the heating filament.
[0039] [0039] In a preferred embodiment, when the device is in use with the cartridge the electric heater, at least partially inside the internal passage is in contact with the porous interface. This improves the heat transfer from the electric heater to the aerosol-forming substrate at the porous interface.
[0040] [0040] Preferably, the electric heater is elastic. The electric heater can have any appropriate elasticity. The elasticity can provide the contact between the electric heater and the porous interface. For example, if the electric heater comprises a sheet of electrically resistive material molded to form the first and second part of electrical contact and the heating filament, preferably the folding of the sheet of electrically resistive material results in a spring effect when the electric heater is mounted. This ensures good contact with the porous interface when the electric heater is inside the internal passage. This ensures a consistent and repeatable smoking experience. In addition, this reduces the likelihood that the electric heater will come off the internal passage.
[0041] [0041] Various forms for the electric heater have been disclosed, but the specialist will appreciate that any suitable form can be used. In addition, the heating filament does not need to have the same shape extending the entire path between the first and second part of the electrical connection.
[0042] [0042] In a preferred embodiment, the aerosol generating device is electrically operated, the vaporizer comprises an electric heater, the liquid storage part, comprises a prism-shaped container, and the porous interface comprises a hollow tube of porous material , which has an inner face in contact with the liquid in the liquid storage part and an outer face opposite the inner face, the electric heater being arranged to heat the aerosol-forming liquid substrate close to the outer face of the porous interface. Preferably, the electric heater comprises a heating filament in contact with the outer face of the porous interface. In this embodiment, in use, the liquid is transferred from the liquid storage part, through the porous interface that lines the internal passage. When the heater is activated, the liquid near the outer face of the porous interface is vaporized by the heat to form the supersaturated vapor. Supersaturated steam is mixed with, and carried in the air flow through the internal passage in the liquid storage part. During the flow, the vapor condenses to form the aerosol and the aerosol is carried to a user's mouth.
[0043] [0043] However, the invention is not limited to electric heater vaporizers, but can be used in aerosol generating devices and systems, in which the steam and the resulting aerosol are generated by a mechanical vaporizer, for example, but are not limiting it to a piezo vaporizer or using a pressurized liquid atomizer.
[0044] [0044] The storage part and the porous interface, and, optionally, the vaporizer, can be removable from the aerosol generating device as a single component.
[0045] [0045] The aerosol generating device or cartridge may comprise at least one air inlet. The aerosol generating device or cartridge may comprise at least one air outlet. In a preferred embodiment, the aerosol generating device or a cartridge further comprises at least one air inlet and at least one air outlet, the air inlet and air outlet being arranged so as to define an air flow path. air from the air inlet to the air outlet through the internal passage of the storage part.
[0046] [0046] Thus, the internal passage can additionally act as an aerosol forming chamber to assist or facilitate aerosol generation. One or more additional aerosol forming chambers may be provided. The aerosol is transported in the air flow path through the internal passage in order to transport the aerosol to the air outlet and into a user's mouth. In addition, the size of the internal passage can be used to help control the aerosol. In particular, a small internal passage can result in a high rate of air flow through the aerosol generating device or cartridge, which can result in smaller droplets in the aerosol. A large internal passage, on the other hand, can result in a low rate of air flow through the aerosol generating device or cartridge, which can result in larger droplets. The size of the droplets in the aerosol can affect the user experience. Preferably, air flows through the vaporizer which has the same diameter as the internal passage. Preferably, the size of the internal passage, and the vaporizer, is predetermined according to the aerosol forming substrate and the desired aerosol properties. Alternatively, however, the size of the internal passage, and the vaporizer, can be changed by the user.
[0047] [0047] In one embodiment, a nozzle is provided arranged to extend into the internal passage. The nozzle allows the incoming air flow to be directed. For example, the nozzle can allow the incoming air flow to be directed directly over the vaporizer, directly over the porous interface, through the surface of the vaporizer, through the surface of the porous interface, or in any other desired direction. This can affect the formation of aerosol which can, in turn, affect the user experience. In addition, the nozzle can provide an air inlet or inlets with a small cross section, which will increase the speed of the air flow. This can also affect aerosol formation by reducing the size of the droplets in the aerosol.
[0048] [0048] The aerosol generating device can be operated electrically and can also comprise an electrical power source. The power supply can be either an AC power source or a DC power source. Preferably, the electrical power source is a battery. The aerosol generating device may further comprise an electrical circuit. In one embodiment, the electrical circuit includes a sensor to detect the air flow indicative of a user taking a puff. In this case, preferably, the electrical circuit is arranged to provide a pulse of electrical current to the vaporizer when the sensor detects a user taking a puff. Preferably, the time period of the electric current pulse is predefined, depending on the amount of liquid desired to be vaporized. The electrical circuit is preferably programmable for this purpose. Alternatively, the electrical circuit may comprise a switch operated manually by a user to initiate a puff. The time period of the electric current pulse is preferably predefined depending on the amount of liquid desired to be vaporized. The electrical circuit is preferably programmable for this purpose.
[0049] [0049] The liquid aerosol-forming substrate preferably has appropriate physical properties, for example, boiling point, vapor pressure, suitable for use in the aerosol generating device or in the cartridge or system. If the boiling point is too high, it may not be possible to vaporize the liquid, but if the boiling point is too low, the liquid can vaporize too easily. The liquid preferably comprises a tobacco-containing material comprising volatile aromatic compounds from tobacco which are released from the liquid by heating. Alternatively, or in addition, the liquid may comprise a material other than tobacco. The liquid can include aqueous solutions, non-aqueous solvents, such as ethanol, plant extracts, nicotine, natural or artificial flavors, or any combination of these. Preferably, the liquid further comprises an aerosol former, which facilitates the formation of a dense and stable aerosol. Examples of suitable aerosol builders are glycerin and propylene glycol.
[0050] [0050] Preferably, the aerosol generating device or cartridge comprises a housing. Preferably, the casing is elongated. Preferably, the longitudinal axis of the housing is substantially aligned with the longitudinal axis of the internal passage in the storage part. The housing may include a housing and a nozzle. In this case, all components can be contained either in the housing or in the nozzle. In one embodiment, the housing includes a removable insert comprising the storage part, the vaporizer and the porous interface. In that embodiment, the parts of the aerosol generating device can be removable from the housing as a single component. This can be useful for refilling or replacing the storage part, for example.
[0051] [0051] The wrapper can comprise any suitable material or combination of materials. Examples of suitable materials include metals, alloys, plastics or composite materials containing one or more of these materials, or thermoplastics that are suitable for food or pharmaceutical applications, for example, polypropylene, polyetheretherketone (PEEK) and polyethylene. Preferably, the material is light and not brittle. The storage part may also comprise any suitable material or combination of materials, and may comprise the same or different materials, such as the casing.
[0052] [0052] In a particularly preferred embodiment, the cartridge comprises: a nozzle; a vaporizer comprising an electric heater to heat the aerosol-forming substrate, the heater being connected to an electrical power source and an electrical circuit in a device; and a storage part for storing the aerosol forming substrate, in which the electric heater and a porous interface are arranged in the cartridge.
[0053] [0053] The storage part and optionally the porous interface, and the heater, can be removable from the aerosol generating system as a single component. The storage part, and optionally the porous interface, and the heater, can be removable from the aerosol generating system like a cartridge.
[0054] [0054] Preferably, the aerosol generating device and the cartridge are portable, both individually and in cooperation. Preferably, the device is reusable by a user. Preferably, the cartridge is disposable by a user, for example, when there is no more liquid contained in the liquid storage part. The device and the cartridge can cooperate to form an aerosol generating system which is a smoking system. The device may be of a size comparable to that of a conventional cigar or cigarette. The cartridge can be of a size comparable to that of a conventional cigar or cigarette. The smoking system can have a total length between approximately 30 mm and approximately 150 mm. The smoking system can have an outside diameter between approximately 5 mm and approximately 30 mm.
[0055] [0055] Preferably, the aerosol generation system is an electrically operated smoking system.
[0056] [0056] According to the invention, there is also provided an aerosol generating system which comprises a storage part for storing an aerosol-forming liquid substrate, the liquid storage part having an internal passage; a vaporizer for heating the aerosol-forming substrate to form an aerosol, the vaporizer, at least partially, within the internal passage in the liquid storage part; and a porous interface at least partially covering the internal passage for transporting the aerosol-forming liquid substrate from the liquid storage portion towards the vaporizer.
[0057] [0057] In one embodiment, the container is in the form of a prism that has an annular cross section, where the inner radius of the ring is the radius of the inner passage of the container, and the outer radius of the ring defines the exterior of the container.
[0058] [0058] In this embodiment, the porous interface may comprise a hollow tube of porous material, the outer dimension of the hollow tube being substantially equal to the diameter of the internal passage of the part of the container.
[0059] [0059] Preferably, the aerosol generating device is electrically operated and the vaporizer comprises an electric heater to heat the liquid aerosol-forming substrate, the electric heater being connectable to an electrical power source in the aerosol generating device.
[0060] [0060] In this embodiment, the electrical resistance is preferably in contact with the porous interface.
[0061] [0061] In a preferred embodiment, the cartridge or the aerosol generating device or both the cartridge and the aerosol generating device comprise at least one air inlet; the cartridge or the aerosol generating device or both the cartridge and the aerosol generating device comprise at least one air outlet, and the air inlet and air outlet are arranged when the cartridge is in use with the air generating device aerosol, to define an air flow path from the air inlet to the air outlet through the inner passage of the container.
[0062] [0062] The features described in relation to one aspect of the invention may be applicable to another aspect of the invention.
[0063] [0063] The invention will be further described, by way of example only, with reference to the accompanying drawings, in which:
[0064] [0064] Figure 1 shows a perspective view of an embodiment of a cartridge for use with an aerosol generating device according to the invention;
[0065] [0065] Figure 2 shows an exploded perspective view of the Figure 1 cartridge;
[0066] [0066] Figure 3 shows a perspective view of a first embodiment of an internal heater for use with a cartridge according to the invention; and
[0067] [0067] Figure 4 shows a perspective view of a second embodiment of an internal heater for use with a cartridge according to the invention.
[0068] [0068] Figure 1 shows a perspective view of an embodiment of a cartridge for use with an aerosol generating device according to the invention. Figure 2 is an exploded perspective view of the Figure 1 cartridge. In Figures 1 and 2, the cartridge is for use with an electrically operated aerosol generating device that has an electrical power source and an electrical circuit.
[0069] [0069] With reference to Figures 1 and 2, the cartridge 100 comprises a storage part in the form of a cylindrical container 101. The container 101 has a first end 101a, a second end 101b, and an outer shell 101c. The container 101 defines an internal passage 103. The container 101 forms a reservoir for the liquid aerosol forming substrate between the outer shell 101c of the container and the internal passage 103. Within the inner passage 103, a vaporizer (not visible) is provided. in Figure 1) in the form of internal heater 105 surrounded by a porous interface in the form of porous tube 107. The structure of the internal heater 105 will be described with reference to Figures 3 and 4. In this embodiment, a separation wall 109 is also provided between the porous tube 107 and container 101, closure part 111, and nozzle parts 113 and 115.
[0070] [0070] The cartridge 101 is arranged to be received in an aerosol generating device (not shown) including an electrical power source and a set of electrical circuits. The aerosol generating device may, although not necessarily, include a puff detection device. The electrical circuitry and puff detection device can be programmable and can be used to manage the operation of the aerosol generating device. In this embodiment, the first end 101a of the container 101 is received closest to the electrical power source and a set of electrical circuits, in the aerosol generating device. The internal heater 105 is connected to the electrical power supply and to a set of electrical circuits, in the aerosol generating device. The second end 101b of the container 101 is received at the nozzle end of the aerosol generating device. The cartridge 100 or the aerosol generating device (not shown) or both the cartridge and the aerosol generating device may include an air inlet, an air outlet at the end of the nozzle, and an aerosol forming chamber.
[0071] [0071] In use, the operation is as follows. The liquid aerosol-forming substrate in the reservoir formed by the container 101 is transported through the porous tube 107 to the internal heater 105. When a user aspirates into the aerosol generating device at the end of the nozzle, ambient air is sucked through an air inlet either in the cartridge or in the aerosol generating device and through the internal passage 103 in the container 101. If the aerosol generating device includes a puff detection device, the puff detection device senses the puff and activates the internal heater 105. otherwise, the internal heater 105 can be activated manually. The electrical power source in the aerosol generating device supplies electrical energy to the internal heater 105 to heat the liquid in the porous tube 107 adjacent to the internal heater 105. The liquid in the porous tube 107 is vaporized by the internal heater 105 to create supersaturated steam in the passage internal 103. At the same time, the liquid being vaporized is replaced by more liquid that moves through the porous tube 107 from the reservoir. The supersaturated steam created is mixed and carried in the air flow from the air inlet through the internal passage 103. The vapor condenses to form an inhalable aerosol, which is transported to the air outlet and into a user's mouth.
[0072] [0072] Figures 1 and 2 show an example of a cartridge for use with an aerosol generating device according to the present invention. However, other examples are possible. The cartridge simply needs to include or receive a liquid aerosol-forming substrate and comprises a vaporizer located at least partially in the inner passage of the container and separated from the liquid by a porous interface at least partially covering the inner passage. For example, the vaporizer may not include a heater, in which case another device may be included to vaporize the liquid aerosol-forming substrate. For example, a puff detection device does not need to be provided. Instead, the device can operate by manual activation, for example, the user operates a switch when a puff is taken. For example, the overall shape and size of the wrapper can be changed.
[0073] [0073] Preferably, the cartridge is disposable and is arranged to cooperate with an aerosol generating device which is reusable. The cartridge can be refilled or replaced when the liquid is used. Thus, when the liquid aerosol-forming substrate in the cartridge has been consumed, the cartridge can be disposed of and replaced with a new cartridge, or the empty cartridge can be refilled. However, the aerosol generating device cannot be designed to work in conjunction with a separate cartridge. Instead, the aerosol generating device may include or receive an aerosol-forming liquid substrate in a storage part and comprises a vaporizer located at least partially in the internal passage of the liquid storage part and separated from the liquid by a porous interface at least partially covering the internal passage. That is, the aerosol generating device can comprise all the components described in relation to the cartridge. In addition, the aerosol generating device may include an electrical power source and a set of electrical circuits. Preferably, however, an aerosol generating device arranged to operate in conjunction with a cartridge is provided. Preferably, the aerosol generating device is reusable and the cartridge is replaceable or refillable. Thus, when the liquid aerosol-forming substrate in the cartridge has been consumed, the cartridge can be disposed of and replaced with a new cartridge, or the empty cartridge can be refilled.
[0074] [0074] The cartridge shown in Figures 1 and 2 has a relatively simple construction, which simplifies manufacturing. The internal heater 105 is protected against damage by the container 101 and, because the internal heater 105 is contained within the internal passage 103 of the container 101 and, (instead of downstream of the container, as in the prior art arrangements), the length cartridge and, consequently, the aerosol generating device, can be reduced. In addition, container 101 acts as an insulator thereby preventing the exterior of the cartridge, and the aerosol generating device, from overheating. Gravity can help transport the liquid in the upper part of the container 101 through the porous interface, and the likelihood of the porous interface drying out is reduced. As the supersaturated vapor condenses in the internal passage 103 to form the aerosol, any aerosol droplets that accumulate in the internal passage can be absorbed by the porous interface. This allows the accumulating drops to be reused, which reduces waste.
[0075] [0075] The porous tube 107 can be made from a variety of porous materials and preferably has a known, predefined porosity. Examples include a sponge or foam material, ceramic or graphite-based materials in the form of sintered fibers or powders, ceramic or graphite-based materials in the form of sintered fibers or powders, metallic or plastic foamed material, a fibrous material, for example, made of spun or extruded fibers, such as cellulose acetate, polyester, or adhered polyolefin, polyethylene, Terylene® or polypropylene, nylon or ceramic fibers. Porous tubes of different porosities can be used to accommodate different liquids with suitable physical properties, such as density, viscosity, surface tension and vapor pressure. The porous tube must be suitable so that the required amount of liquid can be delivered to the heater. In the embodiment shown in Figures 1 and 2, the porous tube extends along the length of the internal passage. However, this need not be the case and the porous tube can extend only along part of the internal passage. The dimensions of the porous tube can be chosen according to the desired operating characteristics of the aerosol generating device, for example, the amount of liquid aerosol-forming substrate desired to be vaporized.
[0076] [0076] Figure 3 is a perspective view of a first embodiment of an internal heater 105 for use with a cartridge similar to that shown in Figures 1 and 2. The internal heater 105 comprises a first electrical connection part 301 to a first end of the internal heater at a first end of the internal heater and a second electrical connection part 305 at a second end of the internal heater. A first electrical connection strip 303 is provided to electrically connect the first electrical connection portion 301 to an electrical power source and a second electrical connection plate 307 to electrically connect the second electrical connection portion 305 to an electrical power source. . A heating filament in the form of a heating coil 309 extends between the first electrical connection part 301 and the second electrical connection part 305.
[0077] [0077] In the embodiment of Figure 3, the first part 301 and the second part 305 of electrical connection and the heating coil 309 are manufactured separately and subsequently joined, for example, by welding. The first and second electrical connection parts are in the form of hollow tubes of electrically conductive material, although alternative forms are possible. The heating coil 309 is in the form of a spiral of electrically resistive material, although alternative shapes are possible.
[0078] [0078] The cylindrical shape of the first 301 and second 305 electrical connection parts and the heating coil 309 define a cylindrical bore. When the heater is mounted, together with the porous tube, in the internal passage of the container, an air flow path is defined through the cylindrical hole defined by the internal heater. The stiffness of the first 301 and second 305 electrical connection parts, in particular, helps to maintain the shape of the internal passage 103 and, therefore, the air flow path through the aerosol generating device.
[0079] [0079] Preferably, the inner heater forms a comfortable fit within the inner passage 103 and a porous tube 107. This prevents the inner heater and porous tube from falling out of the inner passage, for example, when the aerosol generating device is shaken or inverted. In addition, preferably, the heating coil 309 is in contact with the porous tube when the heater and a porous tube are mounted in the inner passage of the container. This ensures good heat transfer to the liquid aerosol-forming substrate, which allows for consistent aerosol formation. The length of the heating coil 309, and other dimensions of the internal heater 105 can be chosen as desired according to the amount of heating required.
[0080] [0080] Figure 4 is a perspective view of a second embodiment of an internal heater 105 'for use with a cartridge similar to that shown in Figures 1 and 2. The internal heater 105' comprises a first electrical connection part 401, a second electrical connection part 405 and an electrical connection part 409. The electrical connection part 409 is at a first end of the internal heater and the first electrical connection part 401 is at a second end of the internal heater. The first electrical connection part 401 is joined to the electrical connection part 409 by means of an elongated portion 411. The second electrical connection part 405 is at the second end of the internal heater adjacent to the first electrical connection part 401 and is connected to the electrical junction part 409 by means of heating filament 413. heating filament 413 extends between electrical junction part 409 and the second electrical connection part 405. A first electrical connection blade 403 is also provided for connecting the first electrical connection part 401 to an electrical power source and a second electrical connection blade 407 to electrically connect the second electrical connection part 405 to an electrical power source.
[0081] [0081] In the embodiment of Figure 4, the first 401 and the second 405 electrical connection parts, the electrical junction part 409 and the heating filament 413 are manufactured together from a single sheet of electrically resistive material. The sheet of electrically resistive material can have any suitable shape. The first 401 and second 405 electrical connection parts, the electrical junction part 409 and the heating filament 413 can be cut from the sheet of electrically resistive material, for example, by a laser or by a chemical or electrical processor, by jet high pressure water. Alternatively, the sheet of electrically resistive material can be preformed in the desired shape. Once the sheet is properly shaped, the sheet can be folded, rolled, curved or folded to form a cylindrical tube, as shown in Figure 4.
[0082] [0082] When the cut sheet of electrically resistive material is rolled up to form the heater, the cylindrical shape of the first 401 and second 405 electrical connection parts, the electrical junction part 409 and the heating filament 413 define a cylindrical hole. When the heater is mounted, together with the porous tube, in the internal passage of the container, an air flow path is defined through the cylindrical hole defined by the internal heater. The shape of the internal heater helps to maintain the shape of the internal passage 103 and, therefore, the air flow path through the aerosol generating device.
[0083] [0083] Preferably, the inner heater forms a comfortable fit within the inner passage 103 and a porous tube 107. This prevents the inner heater and porous tube from falling out of the inner passage, for example, when the aerosol generating device is shaken or inverted. In addition, preferably, the heating filament 413 is in contact with the porous tube when the heater and the porous tube are mounted in the inner passage of the container. This ensures good heat transfer to the liquid aerosol-forming substrate, which allows for consistent aerosol formation. In particular, the winding construction of the internal heater 105 'can provide a spring or elastic effect, ensuring good contact between the heating filament 413 and the porous tube, when the heater and the porous tube are mounted in the internal passage. The length of the heating filament 413 and other dimensions of the internal heater 105 can be chosen as desired according to the amount of heating required.
[0084] [0084] In the embodiments of Figures 3 and 4, the air flow path is defined through the cylindrical hole by the internal heater. Air flows through the center of the internal heater. That is, the size of the internal passage and the internal heater define the size of the air flow path. Thus, the internal passage and the cylindrical hole formed by the internal heater can act as an aerosol forming chamber to help or facilitate the generation of the aerosol. In addition, the size of the internal passage and the internal heater can be used to help control the aerosol. A small internal passage and the internal diameter of the heater can result in a high rate of air flow through the aerosol generating device which can result in smaller droplets in the aerosol. A large internal passage and the internal diameter of the heater, on the other hand, can result in a low rate of air flow through the aerosol generating device, which can result in larger droplets. The size of the droplets in the aerosol can affect the user experience. The size of the internal passage and the internal heater is preferably predetermined according to the aerosol forming substrate and the desired aerosol properties. Alternatively, however, the size of the internal passage and the internal heater can be changed by the user.
[0085] [0085] In one embodiment (not shown), a nozzle is provided arranged to extend into the inner passage of the container 101 when the cartridge is received in the aerosol generating device. The nozzle may be part of the aerosol generating device or part of the cartridge. The nozzle provides an air intake into the internal passage. If the internal heater defines a cylindrical hole, which surrounds the air flow path, the nozzle can be arranged to extend into the cylindrical hole defined by the internal heater. The nozzle can allow the incoming air flow to be directed. For example, the nozzle can allow the incoming air flow to be directed directly over the internal heater, directly over the porous interface, through the surface of the internal heater, through the surface of the porous interface, or in any other desired direction. This can affect the formation of aerosol which can, in turn, affect the user experience. In addition, the nozzle can provide an air inlet or inlets with a small cross section, which will increase the speed of the air flow. This can also affect aerosol formation by reducing the size of the droplets in the aerosol.
[0086] Thus, according to the invention, the aerosol generating device includes a storage part that has an internal passage, a vaporizer, at least partially contained in the internal corridor and a porous interface covering at least partially the internal passage. This provides a number of advantages. Embodiments of the aerosol generating device have been described with reference to Figures 1 and 2, and embodiments of the vaporizer have been described with reference to Figures 3 and 4. The characteristics described in relation to one embodiment can also be applicable to another embodiment.

权利要求:
Claims (17)
[0001]
Aerosol generating device, characterized by the fact that it comprises: a storage part (101) for storing an aerosol-forming substrate, the storage part having an outer shell and an inner passage (103), the storage part forming a reservoir for the aerosol-forming substrate between the outer shell and the internal passage; a vaporizer (105, 105 ') for heating the aerosol-forming substrate to form an aerosol, the vaporizer, at least partially, within the internal passage in the storage part; and a porous interface (107) covering at least partially the internal passage for transporting the aerosol forming substrate from the storage part towards the vaporizer.
[0002]
Aerosol generating device according to claim 1, characterized in that the porous interface (107) comprises a hollow tube of porous material, the outer dimension of the hollow tube being substantially equal to a diameter of the internal passage (103) of the part of storage.
[0003]
Aerosol generating device according to claim 1 or 2, characterized in that the aerosol generating device is electrically operated and the vaporizer (105, 105 ') of the aerosol generating device comprises an electric heater to heat the forming substrate of aerosol.
[0004]
Aerosol generating device according to claim 3, characterized by the fact that the electric heater comprises: a first electrical connection part (301, 401); a second electrical connection part (305, 405); and a heating filament (309, 413) between the first and the second electrical connection part.
[0005]
Aerosol generating device according to claim 4, characterized by the fact that the heating filament (309, 413) is in contact with the porous interface (107).
[0006]
Aerosol generating device according to claim 4 or 5, characterized in that the first electrical connection part (301, 401) is located at a first end of the internal passage (103), the second electrical connection part (305 , 405) is located at a second end of the inner passage (103), and the heating filament (309, 413) has a first end joined to the first electrical connection part and a second end connected to the second electrical connection part.
[0007]
Aerosol generating device according to claim 4 or 5, characterized in that the electric heater comprises a sheet of electrically resistive material molded to form the first electrical connection part (401), the second electrical connection part (405) and the heating filament (413).
[0008]
Aerosol generating device according to any one of claims 1, 2, 4 or 5, characterized in that it additionally comprises at least one air inlet and at least one air outlet, the air inlet and air outlet being arranged to define an air flow path from the air inlet to the air outlet through the internal passage (103) of the storage part.
[0009]
Cartridge for an aerosol generating device as defined in any one of claims 1 to 8, characterized in that the cartridge comprises: a storage part (101) for storing an aerosol-forming substrate, the storage part having an outer shell and an inner passage (103), the storage part forming a reservoir for the aerosol-forming substrate between the outer shell and the internal passage; a vaporizer (105, 105 ') for heating the aerosol-forming substrate to form an aerosol, the vaporizer, at least partially, within the internal passage in the storage part; and a porous interface (107) covering at least partially the internal passage for transporting the aerosol forming substrate from the storage part towards the vaporizer.
[0010]
Cartridge according to claim 9, characterized in that the porous interface (107) comprises a hollow tube of porous material, the outer dimension of the hollow tube being substantially equal to a diameter of the internal passage (103) of the storage part.
[0011]
Cartridge according to either of claims 9 or 10, characterized in that the vaporizer (105, 105 ') comprises an electric heater to heat the aerosol-forming substrate, the electric heater being connectable to an electrical power source in the aerosol generating device.
[0012]
Cartridge according to claim 11, characterized by the fact that the electric heater comprises: a first electrical connection part (301, 401); a second electrical connection part (305, 405); and a heating filament (309, 413) between the first and second electrical connection parts.
[0013]
Cartridge according to claim 12, characterized by the fact that the heating filament (309, 413) is in contact with the porous interface (107).
[0014]
Cartridge according to claim 12 or 13, characterized in that the first electrical connection part (301, 401) is located at a first end of the internal passage (103), the second electrical connection part (305, 405) it is located at a second end of the inner passage (103), and the heating filament (309, 413) has a first end joined to the first electrical connection part and a second end connected to the second electrical connection part.
[0015]
Cartridge according to claim 12 or 13, characterized in that the electric heater comprises a sheet of electrically resistant material molded to form the first electrical connection part (301, 401), the second electrical connection part (305, 405 ) and the heating filament (309, 413).
[0016]
Cartridge according to any one of claims 9, 10, 12 or 13, characterized in that the cartridge comprises at least one air inlet and at least one air outlet, the air inlet and the air outlet being provided with in order to define an air flow path from the air inlet to the air outlet through the internal passage (103) of the storage part.
[0017]
Aerosol generating system, characterized by the fact that it comprises: a cartridge and an aerosol generating device, the cartridge or the aerosol generating device comprising a storage part (101) for storing an aerosol-forming substrate, the storage part having an outer shell and an inner passage (103), the storage part forming a reservoir for the aerosol-forming substrate between the outer shell and the internal passage; a vaporizer (105, 105 ') for heating the aerosol-forming substrate to form an aerosol, the vaporizer, at least partially, within the internal passage in the storage part; and a porous interface (107) covering at least partially the internal passage for transporting the aerosol forming substrate from the storage part towards the vaporizer.

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法律状态:
2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2020-08-04| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

2021-02-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2021-04-06| 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 05/12/2012, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

EP11192696|2011-12-08|

EP11192696.0|2011-12-08|

PCT/EP2012/074510|WO2013083631A1|2011-12-08|2012-12-05|An aerosol generating device having an internal heater|

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