巴西专利BR112020001464A2 aerosol generating device with removable susceptor

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专利摘要:
An aerosol generating device (10) is provided comprising a compartment (12) defining a chamber (14) for receiving at least a portion of an aerosol generating article (16) and an induction coil (20) arranged around at least a portion of the chamber (14). The aerosol generating device (10) also comprises an elongated susceptor element (22) configured for removably fixing to the compartment (12) inside the chamber (14), in which the elongated susceptor element (22) protrudes into the chamber (14 ) when the elongated susceptor element (22) is removably attached to the compartment (12). The aerosol generating device (10) also comprises a power supply (26) and a controller (24) connected to the induction coil (20). The power supply (26) and the controller (24) are configured to supply an alternating electrical current to the inductor coil (20) so that, when used, the inductor coil (20) generates an alternating magnetic field to heat the element elongated susceptor (22) and thus heat at least a portion of an aerosol generating article (16) received within the chamber (14).
公开号:BR112020001464A2
申请号:R112020001464-8
申请日:2018-08-09
公开日:2020-07-28
发明作者:Jerome Christian Courbat；Oleg FURSA；Oleg Mironov；Tony Reevell；Andreas Michael Rossoll；Enrico Stura
申请人:Philip Morris Products S.A.；
IPC主号:

专利说明:

[0001] [0001] The present invention relates to an aerosol generating device comprising an inductive coil and a susceptor configured for removably fixing to the aerosol generating device. The present invention also relates to an aerosol generating system comprising the aerosol generating device and an aerosol generating article for use with the aerosol generating device.
[0002] [0002] A variety of electrically operated aerosol generating systems in which an aerosol generating device with an electric heater is used to heat an aerosol forming substrate, such as a tobacco plug, have been proposed in the art. An objective of such aerosol generating systems is to reduce the known harmful smoke constituents of the type produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes. Typically, the aerosol generating substrate is supplied as part of an aerosol generating article that is inserted into a chamber or cavity in the aerosol generating device. In some known systems, to heat the aerosol-forming substrate to a temperature at which it is capable of releasing volatile components that can form an aerosol, a resistive heating element such as a heating blade is inserted into or around the substrate aerosol former when the article is received in the aerosol generating device. In other aerosol generating systems, an inductive heater is used instead of a resistive heating element. The inductive heater typically comprises an inductor forming part of the aerosol generating device and an electrically conductive susceptor element fixed within the aerosol generating device and arranged in such a way that it is in thermal proximity to the aerosol forming substrate. While being used, the inductor generates an alternating magnetic field to generate eddy currents and hysteresis losses in the susceptor element, causing the susceptor element to heat up, thus heating the aerosol-forming substrate.
[0003] [0003] In known systems with an inductor and a susceptor element, the susceptor element can be contaminated over time with deposits of aerosol-forming substrates heated by the susceptor element. The accumulation of deposits can result in an undesirable taste or taste for a user each time the susceptor element is heated. Cleaning the susceptor element can be difficult, since the susceptor element is normally housed within a chamber or cavity into which aerosol-generating articles to be heated are received.
[0004] [0004] It would be desirable to provide an aerosol generating device that alleviates or overcomes these problems with known systems.
[0005] [0005] According to a first aspect of the present invention, an aerosol generating device is provided which comprises a compartment defining a chamber for receiving at least a portion of an aerosol generating article and an induction coil disposed around at least a portion of the chamber. The aerosol generating device also comprises an elongated susceptor element configured to be removably attached to the compartment within the chamber, wherein the elongated susceptor element projects into the chamber when the elongated susceptor element is removably attached to the compartment. The aerosol generating device also comprises a power supply and a controller connected to the induction coil. The power supply and the controller are configured to supply an alternating electrical current to the inductor coil so that, when used, the inductor coil generates an alternating magnetic field to heat the elongated susceptor element and thus heat at least a portion of an article aerosol generator received inside the chamber.
[0006] [0006] As used in this document, the term "longitudinal" is used to describe the direction along the main axis of the aerosol generating device or an aerosol generating article and the term "transversal" is used to describe the direction perpendicular to the longitudinal direction. When referring to the chamber, the term 'longitudinal' refers to the direction in which an aerosol generating article is inserted into the chamber and the term 'transverse' refers to a direction perpendicular to the direction in which an aerosol generating article is inserted. inserted into the camera.
[0007] [0007] As used in this document, the term "width" refers to the main dimension in a transverse direction of a component of the aerosol generating device or an aerosol generating article, at a specific location along its length . The term "thickness" refers to the size of a component of the aerosol-generating device or an aerosol-generating article, and a transverse direction perpendicular to the width.
[0008] [0008] As used in this document, the term "aerosol-forming substrate" refers to a substrate capable of releasing volatile compounds that can form an aerosol. Such volatile compounds can be released by heating the aerosol-forming substrate. An aerosol-forming substrate is part of an aerosol-generating article.
[0009] [0009] As used in this document, the term "aerosol-generating article" refers to an article comprising an aerosol-forming substrate that is capable of releasing volatile compounds that can form an aerosol. For example, an aerosol-generating article | it can be an article that generates an aerosol that is directly inhaled by the user by swallowing or blowing into a mouthpiece at a proximal or user end of the system. An aerosol-generating article can
[0010] [0010] 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.
[0011] [0011] As used in this document, the term "aerosol generating system" refers to the combination of an aerosol generating article, as described and illustrated in more detail in this document, with an aerosol generating device, as described and illustrated in this document in more detail. In an aerosol generating system, the aerosol generating article and the aerosol generating device cooperate to generate a breathable aerosol.
[0012] [0012] As used in this document, the term "elongated" refers to a component with a length greater than its width and thickness, for example, twice as long.
[0013] [0013] As used in this document, a "susceptor element" means an electrically conductive element that heats up when subjected to a change in the magnetic field. This can be the result of eddy currents induced in the susceptor element, hysteresis losses or both eddy currents and hysteresis losses. The susceptor element is located in thermal contact or in close thermal proximity with the aerosol-forming substrate of an aerosol generating article received in the chamber of the aerosol generating device. In this way, the aerosol-forming substrate is heated by the susceptor element during use so that an aerosol is formed.
[0014] [0014] Advantageously, the aerosol generating devices according to the present invention comprise a susceptor element that is removable from the aerosol generating device. Advantageously, this facilitates the cleaning of the susceptor element, the replacement of the
[0015] [0015] Using inductive heating has the advantage that the heating element, in this case the susceptor element, does not need to be electrically connected to any other components, eliminating the need for soldering or other connecting elements for the heating element. This advantageously facilitates the removal of the susceptor element from the aerosol generating device and the attachment of the susceptor element to the aerosol generating device by a user.
[0016] [0016] Advantageously, providing an induction coil and a susceptor element as parts of the device makes it possible to build an aerosol generating article that is simple, inexpensive and robust. Aerosol generating articles are typically disposable and produced in much larger numbers than the aerosol generating devices with which they work. Consequently, reducing the cost of articles, even if it requires a more expensive device, can generate significant savings for manufacturers and consumers.
[0017] [0017] Advantageously, the use of inductive heating instead of a resistive heater can provide an improved energy conversion due to the energy losses associated with a resistive heater, in particular losses due to contact resistance in connections between the resistive heater and the power supply.
[0018] [0018] Advantageously, using an induction coil instead of a resistive coil can extend the life of the aerosol generating device, since the inductive coil itself undergoes minimal heating during the use of the aerosol generating device. Advantageously, the part of the aerosol generating device that is heated and therefore may have a shorter service life is the susceptor element, which is removable from the aerosol generating device and can be easily replaced.
[0019] [0019] The aerosol generating device may comprise an opening positioned on one side of the compartment, where the opening and the elongated susceptor element are configured for insertion of the elongated susceptor element into the chamber through the opening and configured for removal of the elongated susceptor element of the chamber through the opening. Advantageously, providing an opening positioned on one side of the compartment can facilitate the insertion and removal of the elongated susceptor element at the desired location within the chamber. This configuration can be particularly advantageous in the modalities in which the elongated susceptor element is positioned at a closed end of the chamber and opposite an open end of the chamber through which the aerosol generating articles are inserted.
[0020] [0020] The elongated susceptor element may comprise an elongated base portion and an elongated heating portion that extends from the first end of the elongated base portion, wherein the elongated base portion is orthogonal to the heating portion elongated.
[0021] [0021] Advantageously, the orthogonal relationship between the elongated base portion and the elongated heating portion can facilitate the insertion of the elongated susceptor element through the opening and removal of the elongated susceptor element through the opening. For example, to insert the elongated susceptor element, the elongated susceptor element can be rotated at an angle of approximately 90 degrees at the same time that the elongated heating portion is inserted through the opening. Advantageously, this arrangement can minimize the required opening size. For example, the maximum size of the opening can be significantly smaller than the lengths of the elongated heating portion and the lengthened base portion. Advantageously, this arrangement can also support the use of an elongated heating portion with a length that is longer than a width of the chamber.
[0022] [0022] The compartment can define a channel that extends at least partially through an end upstream of the chamber from the opening, in which the channel is configured to receive the elongated base portion of the elongated susceptor element. Advantageously, the channel can facilitate the insertion of the elongated susceptor element in the chamber in the correct position and orientation. That is, the channel can act as a guide to guide the elongated susceptor element to the correct position and orientation within the chamber. Advantageously, the channel can be coupled to the elongated base portion to retain the elongated susceptor element in the correct position and orientation within the chamber.
[0023] [0023] The channel can be configured to retain the elongated base portion of the elongated susceptor element by an interference fit.
[0024] [0024] The compartment can define at least one flange that extends at least a portion of the channel, wherein at least one flange is configured to retain the elongated base portion of the elongated susceptor portion within the channel. For example, at least one flange can overlap at least a portion of the elongated base portion to retain the elongated base portion within the channel.
[0025] [0025] At least one flange can, at least partially, define a crack. At least one flange may comprise a first flange overlapping a first portion of the channel and a second flange overlapping a second portion of the channel, where the first flange is spaced apart from the second flange to define the gap between the first flange and the second flange.
[0026] [0026] Preferably, the channel, the slot and the elongated susceptor element are configured in such a way that the elongated heating portion of the elongated susceptor element extends through the gap when the elongated base portion is retained within the channel. Advantageously, the slot allows the extended heating portion to extend into the chamber. Advantageously, at least one flange facilitates the retention of the elongated base portion within the channel.
[0027] [0027] Preferably, the slot comprises a first width and the channel comprises a second width, the first width being narrower than the second width. Preferably, the elongated heating portion comprises a third width and the elongated base portion comprises a fourth width, the third width being narrower than the fourth width.
[0028] [0028] Advantageously, the narrower width of the slot compared to the channel can prevent the elongated base portion from passing through the slot.
[0029] [0029] Advantageously, the narrower width of the elongated heating portion in comparison to the elongated base portion facilitates the insertion of the elongated base portion into the slot and may prevent the elongated base portion from passing through the slot.
[0030] [0030] Preferably, the first, second, third and fourth widths are dimensioned to facilitate the sliding of the elongated heating portion within the slot and sliding of the elongated base portion into the channel during insertion and removal of the elongated susceptor element.
[0031] [0031] Preferably, a portion of the elongated susceptor element is configured to project through the opening when the elongated susceptor element is received into the chamber. This can advantageously facilitate the handling of the elongated susceptor element by a user to remove the elongated susceptor element from the aerosol generating device. In modalities in which the elements
[0032] [0032] The elongated susceptor element may comprise a base portion configured to be removably attached to the compartment and an elongated heating portion extending from the base portion.
[0033] [0033] Preferably, the compartment comprises an opening at one end of the chamber for the insertion of an aerosol generating article in the chamber. Preferably, the base portion of the elongated susceptor element is dimensioned and shaped for insertion of the elongated susceptor element into the chamber through the opening. This can advantageously eliminate the need for a separate opening to facilitate insertion of the elongated susceptor element into the chamber.
[0034] [0034] Preferably, a cross-sectional shape of the base portion is substantially the same as a cross-sectional shape of the chamber. The base portion may have a substantially circular cross-sectional shape.
[0035] [0035] The elongated heating portion can be detachable from the base portion. This can advantageously facilitate the reuse of the base portion with multiple elongated heating portions. This may be desirable, since deposit accumulation can occur more quickly in the elongated heating portion than in the base portion.
[0036] [0036] Preferably, the elongated heating portion extends from the center of the base portion. This can advantageously eliminate the need for a user to insert the elongated susceptor element into the chamber in any specific rotational orientation.
[0037] [0037] Advantageously, positioning the extended heating portion in the center of the base portion can facilitate the positioning of the elongated heating portion along a central axis of the chamber. Advantageously, this can facilitate uniform heating of an aerosol-forming substrate of an aerosol-generating article received within the chamber.
[0038] [0038] The base portion of the elongated susceptor element can be configured to removably fix it to the compartment using a magnetic fixation. Advantageously, a magnetic fixation provides a simple and effective mechanism for removably fixing the elongated susceptor element to the aerosol generating device.
[0039] [0039] The base portion may comprise a permanent magnet and the aerosol generating device may comprise a ferromagnetic material at an upstream end of the chamber. The base portion may comprise a ferromagnetic material and the aerosol generating device may comprise a permanent magnet at one end upstream of the chamber. Advantageously, providing only a portion of the base portion and the aerosol generating device with a permanent magnet can simplify and reduce the manufacturing costs of the aerosol generating device.
[0040] [0040] The base portion may include a permanent magnet and the aerosol generating device may comprise a permanent magnet at one end upstream of the chamber. Advantageously, providing both the base portion and the aerosol generating device with a permanent magnet can increase the strength of the magnetic fixation when compared to modalities that comprise only a single permanent magnet. Advantageously, the magnet permanently
[0041] [0041] The aerosol generating device may also include a release mechanism configured to provide relative movement between the elongated susceptor element and the aerosol generating device to undo the magnetic fixation. The release mechanism may comprise at least one of a button and a lever.
[0042] [0042] The aerosol generating device may comprise a button that extends through a portion of the compartment and is movable between an elevated and a lowered position. A tapered element extends from an inner end of the button and is positioned so that pressing the button from the raised position to the lowered position inserts the tapered portion between the base portion of the elongated susceptor element and the portion of the aerosol generating device comprising a permanent magnet or ferromagnetic material. The increasing width of the tapered portion progressively increases the separation between the base portion and the portion of the aerosol generating device that comprises a permanent magnet or ferromagnetic material until the elongated susceptor element is released from the magnetic fixation. Preferably, the aerosol generating device further comprises a pressure element for pressing the button away from the lowered position and towards the raised position. Preferably, the pressure element comprises a spring.
[0043] [0043] The aerosol generating device may comprise a lever that extends through a portion of the compartment and is movable between a coupled position and an uncoupled position. The
[0044] [0044] In the modalities in which the base portion of the elongated susceptible element is configured to be removably fixed to the compartment by a magnetic fixation, the aerosol generating device can be combined with an extraction tool to remove the elongated susceptible element the camera. Preferably, the extraction tool is sized for insertion into the chamber and comprises a (permanent magnet at the end of the extraction tool. The permanent magnet at the end of the extraction tool provides a stronger attraction force between the extraction tool and - traction and the base portion than the attraction force between the base portion and the aerosol generating device Preferably, the extraction tool comprises a cavity for receiving the elongated heating portion of the elongated susceptor element when the tool extraction valve is inserted into the chamber.
[0045] [0045] The elongated susceptor can be configured to detachably connect to the compartment by means of at least one of an interference fit, a bayonet connector and a screw connector.
[0046] [0046] In any of the modalities described in this document, preferably at least a portion of the elongated susceptor element extends in the longitudinal direction of the chamber when the elongated susceptor element is received inside the chamber. That is, preferably, at least a portion of the elongated susceptor element extends substantially parallel to the longitudinal axis of the chamber. As used in this document, the term "substantially parallel" means within plus or minus 10 degrees, preferably within plus or minus 5 degrees. Advantageously, this facilitates the insertion of at least a portion of the elongated susceptor element in an aerosol generating article when the aerosol generating article is inserted into the chamber.
[0047] [0047] In embodiments in which the elongated susceptible element comprises an elongated heating portion, preferably a portion of the elongated susceptible element extends in the longitudinal direction of the chamber.
[0048] [0048] The magnetic axis of the induction coil may be inclined in relation to the longitudinal axis of the chamber. That is, the magnetic axis of the induction coil may be non-parallel to the longitudinal axis of the chamber. In preferred embodiments, the magnetic axis of the inductor coil is substantially parallel to the longitudinal axis of the chamber. This can facilitate a more compact arrangement. Preferably, at least a portion of the elongated susceptor element is substantially parallel to the magnetic axis of the inductor coil. This can even facilitate the heating of the elongated susceptor element by the inductor. In particularly preferred embodiments, the elongated susceptor element is substantially parallel to the magnetic axis of the inductor coil and the longitudinal axis of the chamber.
[0049] [0049] Preferably, the elongated susceptor element comprises a free end that protrudes into the chamber when the elongated susceptor element is received within the chamber. Preferably, the free end is inserted into an aerosol generating article when the aerosol generating article is inserted into the chamber. Preferably, the free end is tapered. That is, the cross-sectional area of a portion of the elongated susceptor element decreases towards the free end. Advantageously, a tapered free end facilitates the insertion of the elongated susceptor element in an aerosol generating article. Advantageously, a tapered free end can reduce the amount of aerosol-forming substrate! displaced by the elongated susceptor element during the insertion of an aerosol generating article in the chamber. This can reduce the amount of cleaning required.
[0050] [0050] Other optional and preferred features of the elongated susceptor element will now be described. In embodiments where the elongated susceptor element comprises an elongated heating portion, the following optional and preferred features apply to the elongated heating portion.
[0051] [0051] The elongated susceptor element can be formed from any material that can be inductively heated to a temperature sufficient to generate an aerosol from an aerosol-forming substrate. Suitable materials for the elongated susceptor element include graphite, molybdenum, silicon carbide, stainless steels, niobium and aluminum. Preferred elongated susceptor elements comprise a metal or carbon. Preferably, the elongated susceptor element comprises or consists of a ferromagnetic material, for example, ferritic iron, a ferromagnetic alloy such as ferromagnetic steel or stainless steel, ferromagnetic particles and ferrite. A suitable elongated susceptor element may be or comprise aluminum. The elongated susceptor element preferably comprises more than about 5 percent, preferably more than about 20 percent, more preferably more than about 50 percent or more than about 90 percent of ferromagnetic or paramagnetic materials. The preferred extended susceptor elements can be heated to a temperature above 250 degrees Celsius.
[0052] [0052] The elongated susceptor element may comprise a non-metallic core with a metal layer disposed in the non-metallic core. For example, the elongated susceptor element may comprise one or more metallic bands formed on an external surface of a ceramic core or substrate.
[0053] [0053] The elongated susceptor element may have an external protective layer, for example, a protective ceramic layer or protective glass layer. The protective outer layer can encapsulate the elongated susceptor element. The elongated susceptor element may comprise a protective coating formed of glass, ceramic or an inert metal, formed on a core of susceptible material.
[0054] [0054] The elongated susceptor element can have any suitable cross section. For example, the elongated susceptor element may be square, oval, rectangular, triangular, pentagonal, hexagonal, or similar in shape. The elongated sustained member may have a planar or flat transverse area.
[0055] [0055] The elongated susceptor element can be solid, hollow or porous. Preferably, the elongated susceptor element is solid. The elongated susceptor element is preferably in the form of a pin, column, blade or plate. Preferably, the elongated susceptor element has a length of between about 5 millimeters and about 15 millimeters, for example, between about 6 millimeters and about 12 millimeters or between about 8 millimeters and about 10 millimeters. The elongated susceptor element preferably has
[0056] [0056] In embodiments in which the elongated susceptor element comprises an elongated heating portion and a base portion, the elongated heating portion and the base portion may be formed of the same material. The elongated heating portion and the base portion can be formed integrally as a unitary part.
[0057] [0057] The elongated heating portion and the base portion can be formed from different materials. The elongated heating portion and the base portion can be formed separately and connected to each other. The elongated heating portion and the base portion can be connected together by at least one of an interference fit, a solder and an adhesive.
[0058] [0058] The base portion can be formed from a material that is not susceptible to inductive heating. This can advantageously reduce the heating of the base portion when using the aerosol generating device. This can be particularly advantageous in the modalities in which a portion of the base portion projects through an opening in the device compartment when the elongated susceptor element is received within the chamber.
[0059] [0059] The base portion can be formed from a material that can be inductively heated. This can advantageously simplify the manufacture of the elongated susceptor element. In particular, the base portion and the elongated heating portion can be formed from the same material. Advantageously, forming the base portion of a material that can be inductively heated can provide additional heating of an aerosol generating article during use.
[0060] [0060] Preferably, the aerosol generating device is portable. The aerosol generating device can be of a size comparable to a conventional cigar or cigarette. The aerosol generating device can have a total length of between approximately 30 millimeters and approximately 150 millimeters. The aerosol generating device can have an external diameter between approximately 5 millimeters and approximately 30 millimeters.
[0061] [0061] The aerosol generating device compartment can be stretched. The compartment can comprise any suitable material or combination of materials. Examples of suitable materials include metals, alloys, plastics or composite materials that contain one or more of those materials, or thermoplastics that are suitable for pharmaceutical or food applications, for example, polypropylene, polyetheretherketone (PEEK) and polyethylene. Preferably, the material is light and is not fragile.
[0062] [0062] The compartment can comprise a nozzle. The nozzle can comprise at least one air inlet and at least one air outlet. The nozzle can comprise more than one air inlet. One or more of the air intakes can reduce the temperature of the aerosol before it is transmitted to a user and can reduce the concentration of the aerosol before it is transmitted to a user.
[0063] [0063] Alternatively, the nozzle can be supplied as part of an aerosol generating article.
[0064] [0064] As used herein, the term "mouthpiece" refers to a portion of the aerosol generating device that is placed in a user's mouth to directly inhale an aerosol generated by the aerosol generating device of an aerosol generating article. - received in the compartment chamber.
[0065] [0065] The aerosol generating device may include a user interface to activate the device, for example, a button to start heating the device or screen to indicate a state of the device or the aerosol-forming substrate.
[0066] [0066] The aerosol generating device comprises a power supply. The power source can be a battery, such as a rechargeable lithium-ion battery. Alternatively, the power supply may be another form of charge storage device, such as a capacitor. The power supply may need to be recharged. The power supply may have a capacity that allows sufficient energy storage for one or more uses of the device. For example, the power supply may be of sufficient capacity to allow continuous aerosol generation over a period of about six minutes, corresponding to the typical time spent smoking a conventional cigarette or for a period that is a multiple of six minutes . In another example, the power supply may have sufficient capacity to allow a predetermined number of puffs or discreet activations.
[0067] [0067] The power supply can be a DC power supply. In one embodiment, the power supply is a DC power source with a DC supply voltage in the range of about 2.5 Volts to about 4.5 Volts and a DC power current of 1 Ampere to about 10 Amperes (corresponding to a DC power supply in the range of about 2.5 Watts to about 45 Watts).
[0068] [0068] The power supply can be configured to operate at high frequency. As used in this document, the term "high frequency oscillating current" means an oscillating current with a frequency of between about 500 kilo-hertz and about 30 mega-hertz. The high-frequency oscillating current can have a frequency of between about 1 mega-hertz and about 30 mega-hertz, preferably between about 1 mega-hertz and about 10 mega-hertz and more preferably between about 5 mega-hertz and about 8 mega-hertz.
[0069] [0069] The aerosol generating device comprises a controller connected to the induction coil and the power supply. The controller is configured to control the power supply to the power supply inductor coil. The controller may comprise a microprocessor, which may be a programmable microprocessor, a microcontroller or an application specific integrated chip (ASIC) or other electronic circuits capable of providing control. The controller can comprise other electronic components. The controller can be configured to regulate a current supply to the inductor. The current can be supplied to the induction coil continuously by activating the aerosol generating device or it can be supplied infinitely, as with each drag. The controller can advantageously comprise the DC / AC inverter, which can comprise a Class-D or Class-E power amplifier.
[0070] [0070] According to a second aspect of the present invention, an aerosol generating system is provided. The aerosol generating system comprises an aerosol generating device according to the first aspect of the present invention, according to any of the modalities described in this document. The aerosol generating system also comprises an aerosol generating article with an aerosol-forming substrate and configured for use with the aerosol generating device.
[0071] [0071] The aerosol-forming substrate may comprise nico-
[0072] [0072] The aerosol forming substrate may comprise at least one aerosol former. An aerosol builder can be any suitable known compound or mixture of compounds that, when in use, facilitate the formation of a dense and stable aerosol and that is substantially resistant to thermal degradation at the operating temperature of the system. Suitable aerosol builders are well known in the art and include, but are not limited to: polyhydric alcohols, such as triethylene glycol, 1,3-butanediol and glycerin; esters of polyhydric alcohols, such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate. Preferred aerosol builders are polyhydric alcohols or mixtures thereof, such as triethylene glycol, 1,3-butanediol.
[0073] [0073] In any of the above embodiments, the aerosol generating article and the chamber of the aerosol generating device can be arranged so that the article is partially received within the chamber of the aerosol generating device. The chamber of the aerosol generating device and the aerosol generating article can be arranged so that the article is received entirely within the chamber of the aerosol generating device.
[0074] [0074] The aerosol generating article can be substantially cylindrical in shape. The aerosol-generating article can be substantially elongated. The aerosol generating article can have a length and a circumference substantially perpendicular to the length. The aerosol forming substrate can be provided as an aerosol forming segment containing an aerosol forming substrate. The aerosol-forming segment can be substantially cylindrical. The aerosol forming segment can be substantially elongated. The aerosol forming segment may have a length and circumference substantially perpendicular to the length.
[0075] [0075] The aerosol generating article can have a total length between approximately 30 millimeters and approximately 100 millimeters. In one embodiment, the aerosol generating article has a total length of approximately 45 millimeters. The aerosol generating article can have an external diameter between approximately 5 millimeters and approximately 12 millimeters. In one modality, the article
[0076] [0076] The aerosol-forming substrate can be supplied as an aerosol-forming segment with a length between about 7 mm and about 15 mm. In one embodiment, the aerosol-forming segment can have a length of approximately 10 millimeters. Alternatively, the aerosol forming segment can be approximately 12 millimeters long.
[0077] [0077] The aerosol generating segment preferably has an external diameter that is approximately equal to the external diameter of the aerosol generating article. The outside diameter of the aerosol forming segment can be between about 5 millimeters and about 12 millimeters. In one embodiment, the aerosol-forming segment can have an outside diameter of approximately 7.2 millimeters.
[0078] [0078] The aerosol generating article may comprise a filter plug. The filter plug can be located at the downstream end of the aerosol generating article. The filter plug can be a cellulose acetate filter plug. The filter plug is approximately 7 millimeters long in one embodiment, but can be between approximately 5 millimeters and approximately 10 millimeters in length.
[0079] [0079] The aerosol-generating article may comprise an outer paper wrapper. In addition, the aerosol generating article may comprise a separation between the aerosol-forming substrate and the filter plug. The separation can be about 18 millimeters, but it can be in the range of about 5 millimeters and about 25 millimeters.
[0080] [0080] The invention will be described below, only by way of example, with reference to the attached figures, in which:
[0081] [0081] Figure 1 shows an aerosol generating device 10 comprising a compartment 12 defining a chamber 14 for receiving an aerosol generating article 16. Figures 2 and 3 show the aerosol generating device 10 in combination with a generating article spray 16 to form an aerosol generating system 18.
[0082] [0082] In the Figures | and 2, a portion of the compartment 12 that defines the chamber 14 is shown as semitransparent to illustrate components of the aerosol generating device 10 arranged within the chamber 14. However, it is understood that the portion of the compartment 12 that defines the chamber 14 can include an opaque material.
[0083] [0083] The aerosol generating device 10 further comprises an inductive coil 20 arranged around chamber 14 and an elongated susceptor element 22 positioned within inductive coil 20. The chamber 14 comprises an open end through which the article aerosol generator 16 is received and a closed end opposite the open end. The elongated susceptor element 22 extends into the chamber 14 from the closed end.
[0084] [0084] The aerosol generating device 10 also comprises a controller 24 and a power supply 26 connected to the inductor coil 20. Controller 24 is configured to supply an alternating electrical current from the power supply 26 to the inductor coil. 20 to generate an alternating magnetic field, which inductively heats the susceptor element 22.
[0085] [0085] The aerosol-generating article 16 comprises an aerosol-forming substrate 28 in the form of a tobacco plug, a hollow acetate tube 30, a polymeric filter 32, a nozzle 34 and an outer shell 36. During use, a portion of the aerosol-generating article! l
[0086] [0086] The elongated susceptor element 22 is configured for removably fixing to the compartment 12 of the aerosol generating device 10. To allow the insertion and removal of the elongated susceptible element 22 inside and outside the chamber 14, the compartment 12 defines an opening 38 extending through one side of compartment 12 and communicating with the closed end of the chamber
[0087] [0087] Figures 4 to 7 show the portion of compartment 12 that defines chamber 14, with inductor coil 20 omitted for clarity purposes. Figures 4 to 7 illustrate the procedure for inserting the elongated susceptor element 22 into chamber 14. It will be appreciated that the steps can be reversed to remove the elongated susceptor element from chamber 14.
[0088] [0088] In a first step illustrated in Figure 4, a tip of the elongated heating portion 42 of the elongated susceptible element 22 is inserted through the opening 38, with the elongated heating portion 42 substantially perpendicular to a longitudinal axis of the chamber 14. As the remainder of the elongated heating portion 42 is inserted through opening 38 and in the chamber 14, the elongated susceptible element 22 is rotated at an angle of approximately 90 degrees until the elongated heating portion 42 is substantially parallel to the longitudinal axis of the chamber 14 and positioned on one side of the chamber 14 adjacent to the opening 38 (Figures 5 and 6). The elongated susceptor element 22 is then pushed in an orthogonal direction to the longitudinal axis of the chamber 14 until the elongated base portion 40 engages the compartment 12 and the elongated heating portion 42 is centered within the chamber 14.
[0089] [0089] Figures 8 and 9 show a portion of the compartment 12 forming an end wall 44 that defines the closed end of the chamber 14. The end wall 44 comprises a channel 46 in which the elongated base portion 40 is received when the elongated susceptor element 22 is coupled to compartment 12. The end wall 44 also comprises the first and second flanges 48, 50 partially overlapping the channel 46 to retain the elongated base portion 40 within the channel 46. The first and second flanges 48, 50 are separated from each other to define a slot 52 between them, wherein the elongated heating portion 42 slides into the slot 52 when the elongated susceptor element 22 is inserted into chamber 14 and removed from chamber 14.
[0090] [0090] Figures 10 to 14 show an aerosol generating device 100 according to a second embodiment of the present invention. The aerosol generating device 100 is similar to the aerosol generating device 10 described with reference to Figures 1a9 and similar reference numbers are used to designate similar parts. The aerosol generating device 100 has a different configuration than that of the elongated susceptor element. The use and operation of the aerosol generating device 100 with an aerosol generating article 16 is the same as described with reference to the aerosol generating device | 10.
[0091] [0091] The aerosol generating device 100 comprises an elongated susceptor element 122 configured for insertion into chamber 14 through the open end of chamber 14. The elongated susceptor element 122 comprises a base portion 140 and a portion of elongated heating 142 extending from the center of the base portion 140.
[0092] [0092] The elongated susceptor element 122 is configured to be removably attached to the aerosol generating device by magnetic fixation. The base portion 140 forms a first part of the magnetic fastening and a magnetic element 143 disposed within the housing 12 adjacent to the closed end of the chamber 14 forms a second part of the magnetic fastening. At least one of the base portion 140 and the magnetic element 143 comprise a permanent magnet. The base portion 140 may comprise a permanent magnet and the magnetic element 143 may comprise a magnetizable material, such as a ferromagnetic material. The magnetic element 143 may comprise a permanent magnet and the base portion may comprise a magnetizable material, such as a ferromagnetic material. Each of the base portions 140 and the magnetic element 143 may comprise a permanent magnet.
[0093] [0093] When the elongated susceptor element 122 is inserted into the chamber 14, the magnetic attraction between the base portion 140 and the magnetic element 143 removably fixes the elongated susceptor element 122 to the closed end of the chamber 14.
[0094] [0094] Figures 11 and 12 show a first arrangement of a release mechanism 145 to undo the magnetic fixation and release the elongated susceptor element 122 of the chamber 14. The release mechanism 145 comprises a button 147 with a wedge shape and extending through a portion of the compartment 12. When the wedge-shaped button 147 is pressed by a user, the wedge-shaped button 147 is inserted between the closed end of the chamber 14 and the magnetic element 143 ( Figure 12). This results in the movement of the magnetic element 143 away from the base portion 140, which undoes the magnetic fixation and releases the elongated holding element 122. The wedge-shaped button 147 is pressed in the raised position shown in Figure 11 by a spring.
[0095] [0095] Figures 13 and 14 show a second arrangement of a release mechanism 245 for undoing the magnetic fixation and releasing the elongated element of the susceptor 122 of chamber 14. The release mechanism 245 comprises a lever 247 which extends through an elongated slot in a portion of compartment 12. Lever 247 is connected to magnetic element 143 so that when a user pushes lever 247 in a direction away from chamber 14, magnetic element 143 is moved away from the portion base 140 (Figure 14). This undoes the magnetic fixation and releases the elongated susceptor element 122. At least one of the lever 2467 and the magnetic element 143 is pressed into the position shown in Figure 13 by a spring.
[0096] [0096] Figures 15 and 16 show a configuration in which the aerosol generating device 100 does not include a release mechanism. Instead, the aerosol generating device 100 is provided with an extraction tool 301. The extraction tool 301 comprises a cylindrical body 303 sized and molded to be received within chamber 14. A cavity 305 within the cylindrical body 303 it is configured to receive the elongated heating portion 142 of the elongated susceptor element 122 when the extraction tool 301 is inserted in chamber 14. The extraction tool 301 also comprises a permanent magnet 307 positioned adjacent an open end of the cavity 305 for coupling to the base portion 140 of the elongated susceptor element 122. The permanent magnet 307 of the extraction tool 301 is configured for
[0097] [0097] Figure 17 shows a configuration of the elongated susceptor element 122 in which the elongated heating portion 142 is removable from the base portion 140. The base portion 140 comprises an opening 401 for receiving and retaining one end of the portion of elongated heating 142 by an interference fit. This arrangement allows the elongated heating portion 142 to be replaced separately from the base portion 140. This can be particularly advantageous in embodiments where the base portion 140 comprises a permanent magnet and may be more expensive to manufacture than the portion elongated heating element 142.
[0098] [0098] In the configuration shown in Figure 17, the elongated heating portion 142 has a pin shape. In an alternative configuration shown in Figure 18, the elongated heating portion 142 has a flat blade shape.

权利要求:
Claims (16)
[1]
1. Aerosol generating device characterized by the fact that it comprises: a compartment defining a chamber to receive at least a portion of an aerosol generating article; an induction coil arranged around at least a portion of the chamber; an elongated susceptor element configured for removably fixing to the compartment within the chamber, wherein the elongated susceptor element projects into the chamber when the elongated susceptor element is removably attached to the compartment; and a power supply and controller connected to the inductor coil and configured to supply an alternating electrical current to the inductor coil so that, when used, the inductor coil generates an alternating magnetic field to heat the susceptor element elongated and thus heat at least a portion of an aerosol generating article received within the chamber.
[2]
2. Aerosol generating device, according to claim 1, characterized by the fact that it also comprises an opening positioned on one side of the compartment, in which the opening and the elongated susceptor element are configured for insertion of the susceptor element elongated in the chamber through the opening and configured to remove the elongated susceptor element from the chamber through the opening.
[3]
3. Aerosol generating device according to claim 2, characterized in that the elongated susceptor element comprises an elongated base portion and an elongated heating portion that extends from the first end of the base portion elongated, wherein the elongated base portion is orthogonal to the elongated heating portion.
[4]
4. Aerosol generating device, according to claim 3, characterized by the fact that the compartment defines a channel that extends, at least partially, from the closed end of the opening chamber and in which the channel is configured to receiving the elongated base portion of the elongated susceptor element.
[5]
5. Aerosol generating device, according to claim 4, characterized by the fact that the channel is configured to retain the elongated base portion of the elongated susceptor element by interference adjustment.
[6]
6. Aerosol generating device, according to claim 4 or 5, characterized by the fact that the compartment defines at least one flange that extends over at least a portion of the channel, in which at least one flange is configured to retain the elongated base portion of the elongated susceptor portion within the channel.
[7]
7. Aerosol generating device, according to claim 6, characterized by the fact that at least one flange defines, at least partially, a crack and in which the channel, the crack and the elongated susceptor element are configured so that the elongated heating portion of the elongated susceptor element extends through the slit when the elongated base portion is retained within the channel.
[8]
Aerosol generating device according to any one of claims 2 to 7, characterized in that a portion of the elongated susceptor element is configured to project through the opening when the elongated susceptor element is received into the chamber.
[9]
9. Aerosol generating device, according to claim 1, characterized by the fact that the elongated susceptor element comprises a base portion configured to be removably fixed to the compartment and an elongated heating portion extends from the base portion.
[10]
10. Aerosol generating device, according to claim 9, characterized by the fact that the elongated heating portion extends from the center of the base portion.
[11]
11. Aerosol generating device, according to claim 9 or 10, characterized by the fact that the base portion of the elongated susceptor element is configured to be removably fixed to the compartment by magnetic fixation.
[12]
12. Aerosol generating device, according to claim 11, characterized by the fact that a base portion comprises one (permanent magnet and the aerosol generating device comprises a ferromagnetic material at one end upstream of the chamber, or where the base portion comprises ferromagnetic material and the aerosol generating device comprises a permanent magnet at one end upstream of the chamber, or where the base portion comprises a permanent magnet and the aerosol generating device comprises a (permanent magnet at one end upstream of the chamber.
[13]
13. Aerosol generating device, according to claim 11 or 12, characterized by the fact that it also comprises a release mechanism configured to provide relative movement between the elongated susceptor element and the aerosol generating device to undo the magnetic fixation.
[14]
14. Aerosol generating device, according to claim 11 or 12, characterized by the fact that in combination with an extraction tool, the extraction tool dimensioned for insertion into the chamber and comprising a permanent magnet at one end of the extraction tool.
[15]
15. Aerosol generating system characterized by the fact that it comprises an aerosol generating device, as defined in any of the preceding claims, and an aerosol generating article with an aerosol-forming substrate and configured to be used with the generating device. of aerosol.
N Mo
[16]
16 36 20 19 Figure 3 28 14 /
NE RA 26 2 [02 900 008 34 32 12 22 38 Ec TD | | | 42 | 22 | 12 | | | >) 40 | K, Y Figure 4 f Figure 5 38 EEE -> | | | | ) | Figure 6 Figure 7
Figure 8 52 Figure 9 100 14 12 122 1 Y A (
U Ss VUpp 142 140 Figure 10
N X 1147 Figure 11 F ...... - | 122 [co00004 en 143 14 Figure 12 o UUUS o / ss ... NE O 100 247 245 N.
Figure 13 co0006068 E | e004 ... 143 14 Figure 14 co00008
/ Figure 15 l III OD NUMA | 303 = SAS 305 12 140 Figure 16 "122 142 Paddle 142/140 140 401 401 NX / Figure 17 Figure 18

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法律状态:
2021-11-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

申请号 | 申请日 | 专利标题

EP17185592.7|2017-08-09|

EP17185592|2017-08-09|

PCT/EP2018/071704|WO2019030360A1|2017-08-09|2018-08-09|Aerosol-generating device with removable susceptor|

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