WO2025214957A1 - Aerosol-generating device for use with an elongate aerosol-generating article - Google Patents

Abstract

The invention relates to an aerosol-generating device (10) for use with an elongate aerosol-generating article (34), the aerosol- generating device comprising: a cavity (18) for receiving the elongate aerosol-generating article, a heating element (24) for heating the elongate aerosol-generating article, and a driving element (22) for moving the elongate aerosol-generating article with respect to the heating element. The invention further relates to an aerosol- generating system (32) comprising the aerosol-generating device and the elongate aerosol-generating article that is to be received in the cavity of the aerosol-generating device.

Description

AEROSOL-GENERATING DEVICE FOR USE WITH AN ELONGATE AEROSOL¬

GENERATING ARTICLE

The present invention relates to an aerosol-generating device for use with an elongate aerosol-generating article. The present invention also relates to an aerosol-generating system comprising the aerosol-generating device and the elongate aerosol-generating article.

It is known to provide an aerosol-generating device for generating an inhalable vapor. Such devices may heat aerosol-forming substrate to a temperature at which one or more components of the aerosol-forming substrate are volatilised without burning the aerosolforming substrate. Such devices may be referred to as Heat-not-Burn (HNB) devices. The aerosol-forming substrate may be present in solid form or in liquid form.

Aerosol-forming substrate may be provided as part of an aerosol-generating article. The aerosol-generating article may have a rod shape for insertion of the aerosol-generating article into a cavity, such as a heating chamber, of the aerosol-generating device. A heating element may be arranged in or around the heating chamber for heating the aerosol-forming substrate once the aerosol-generating article is inserted into the heating chamber of the aerosol-generating device. In addition or alternatively, a cartridge comprising a liquid aerosolforming substrate may be attached to or inserted into the aerosol-generating device for supplying the liquid aerosol-forming substrate to the device for aerosol generation. The aerosol-generating article or cartridge usually comprises a mixture of different materials. For example, a rod-shaped aerosol-generating article may comprise a filter segment, an aerosolcooling segment, and a metallic susceptor arranged within an aerosol-forming substrate potion, all wrapped within an outer paper wrapper.

Alternative aerosol-generating articles may be formed from aerosol-forming substrate only. Thus, such articles may not comprise a wrapper. Such articles may not comprise filter elements or cooling elements. Further such articles may have an elongate shape with a length that is larger than the length of conventionally used articles for HNB aerosol-generating devices.

It would be desirable to have an aerosol generating device that is configured to be used with elongate aerosol-generating articles. It would be desirable to have such aerosol generating device which at the same time allows to adjust operation according to user preferences. It would be desirable to have such aerosol generating device which at the same time allows to adjust operation according to user behaviour. It would be desirable to have an aerosol generating device allows for more sustainable use of an aerosol-generating device. It would be desirable to have such aerosol-generating device that is configured to only heat a portion of an aerosol-generating article. It would be desirable to have such aerosol-generating device that is configured to collect consumed portions of an aerosol-generating article. It would be desirable to have such aerosol-generating device configured to improve device hygiene. It would be desirable to have an aerosol-generating device that is configured for heating different aerosol-forming substrates.

According to an embodiment of the invention there is provided an aerosol-generating device for use with an elongate aerosol-generating article. The aerosol-generating device comprises a cavity for receiving the elongate aerosol-generating article. The aerosolgenerating device comprises a heating element for heating the elongate aerosol-generating article. The aerosol-generating device comprises a driving element for moving the elongate aerosol-generating article with respect to the heating element.

According to an embodiment of the invention there may be provided an aerosolgenerating device for use with an elongate aerosol-generating article. The aerosol-generating device may comprise a cavity for receiving the elongate aerosol-generating article. The aerosol-generating device may comprise a heating element for heating the elongate aerosolgenerating article. The aerosol-generating device may comprise a driving element for moving the elongate aerosol-generating article with respect to the heating element.

Providing the driving element for moving an aerosol-generating article with respect to the heater, may allow to move the elongate aerosol-generating article during consumption. The driving element moving the elongate aerosol-generating article during consumption may further allow consuming the elongate aerosol-generating article sequentially in portions.

The cavity for receiving the elongate aerosol-generating article may be cylindrically shaped, preferably tube-shaped. The cavity may be formed between the driving element and a distal end of the aerosol-generating device. The cavity may be configured to receive the elongate aerosol-generating article through a distal end of the aerosol-generating device.

The cavity may be configured to receive multiple aerosol-generating articles. The cavity may be configured to transfer one of the multiple aerosol-generating articles towards the driving element, preferably while storing the remaining elongate aerosol-generating articles.

The cylindrically shaped cavity may define a longitudinal axis that corresponds to the axis of insertion of the elongate aerosol-generating article.

The aerosol-generating device may comprise more than one heating element.

The heating element may be hollow, preferably tube-shaped.

A hollow central core of the tube-shaped heating element may define a heating chamber configured for heating a portion of the elongate aerosol-generating article.

An inner diameter of the heating element may be between 2 millimeters and 6 millimeters, preferably between 2.5 millimeters and 5 millimeters, most preferably between 3 millimeters and 4 millimeters. An outer diameter of the heating element may be between 4 millimeters and 8 millimeters, preferably between 5 and 7 millimeters, most preferably between 5.5 and 6.5 millimeters.

A length of the heating element may be between 3 millimeters and 20 millimeters, preferably between 5 and 15 millimeters, most preferably between 7 and 13 millimeters.

The heating element may be made of a ceramic material, preferably of one or more of glass, clays, metal oxides, such as iron oxide, alumina, titania, silica, silica-alumina, zirconia and ceria, zeolites, zirconium phosphate, and other ceramic materials or combinations thereof.

The heating element may be a resistive heating element. The resistive heating element may comprise one of a heating track or a wire heater, preferably arranged on an inner surface of the (tube-shaped) heating element. The wire heater may be made of Nichrome or any other suitable material.

The at least one heating element may be collinearly arranged with the cavity. The heating element may be arranged between the driving element and the proximal end of the aerosol-generating device.

The driving element may be configured to advance the elongate aerosol-generating article from the cavity towards the heating element.

The driving element may be configured to move the elongate aerosol-generating article through the (tube-shaped) heating element. This configuration may allow the driving element to advance a portion of the elongate aerosol-generating article into the heating element to be heated inside the heating element. In addition, the driving element may advance the portion of the elongate aerosol-generating article further to remove the portion of the elongate aerosolgenerating article from the heating element. In this way, the driving element may be enabled to remove consumed portions of the elongate aerosol-generating article from the heating element. The driving element moving the elongate aerosol-generating article through the (tubeshaped) heating element may thus allow to consume the elongate aerosol-generating article in portions.

Preferably, the at least one heating element may be collinearly arranged with the driving element along the longitudinal axis of the cavity.

The driving element may comprise a motor, preferably a stepper motor to move the elongate aerosol-generating article.

Providing the driving element with the motor may allow to control the advancement of the elongate aerosol-generating article upon operation of the motor. Activating the motor may advance the elongate aerosol-generating article. Vice versa, deactivation of the motor may stop the advancement of the elongate aerosol-generating article. Thus, providing the driving element with the motor may allow to advance the elongate aerosol-generating article sequentially.

The driving element may comprise a toothed wheel. The toothed wheel may be configured to move the elongate aerosol-generating article. The motor of the driving element may be used to drive the toothed wheel. Thus, activating the motor may drive the toothed wheel to advance the elongate aerosol-generating article.

The motor may be configured to adjust the rotation speed of the toothed wheel. As the toothed wheel advances the elongate aerosol-generating article, the rotation speed of the toothed wheel may define the advancement speed of the elongate aerosol-generating article. Furthermore, the advancement speed of the elongate aerosol-generating article may define the consumption of the elongate aerosol-generating article. Configuring the motor to adjust the rotation speed of the toothed wheel, may therefore allow controlling the consumption of the elongate aerosol-generating article.

The driving element may comprise a roller. The roller may be biased against the toothed wheel by a tensioning mechanism, wherein the elongate aerosol-generating article may be clamped between the toothed wheel and the biased roller. Clamping the elongate aerosol-generating between the toothed wheel and the biased roller may enable the toothed wheel to grip and move the elongate aerosol-generating article upon activation of the motor.

The tensioning mechanism may comprise a tensioning arm. The tensioning mechanism may comprise a tensioning spring.

Upon activation of the driving element, the elongate aerosol-generating article may be moved along the longitudinal axis of the cavity.

The aerosol-generating device may further comprise a controller configured to operate the driving element and the heating element. The controller may be configured to operate the motor. Preferably, the controller may be configured to operate the driving element sequentially. Configuring the controller to operate the driving element sequentially may allow advancing the elongate aerosol-generating article sequentially towards the heating element. Thereby, the elongate aerosol-generating article may be consumed in sequential portions. Configuring the controller to operate the driving element sequentially may thus provide the user with multiple user experiences.

Preferably the controller may be configured to operate the driving element based on one or both of a puff intensity and puff duration. The controller may adjust the advancement speed of the elongate aerosol-generating article in dependence of the puff intensity.

The controller may be configured to adjust the operation time of the driving element in dependence of a puff duration. The controller may thereby start operation of the driving element when a puff is detected. Vice versa, the controller may end the operation of the driving element when no puff is detected. In this way, the controller may control the size of a portion of the elongate aerosol-generating article advancing trough the tubular heating element in dependence of the puff duration. Thus, the user may be enabled to regulate consumption of the elongate aerosol-generating article in dependence of the puff duration.

For example, during a puff with a puff duration of 3 seconds the driving element may advance the elongate aerosol-generating article farther than during a puff with a puff duration of only 1 second. Thus, a larger portion of the elongate aerosol-generating article may be heated or consumed for a puff duration of 3 seconds, compared to a puff duration of 1 second.

Preferably the controller may be configured to activate the heating element based on one or both of a puff intensity and a puff duration. The controller may be configured to adjust the activation time of the heating element in dependence of the puff duration. Thus, long puff durations may result in the controller activating the heating element for a longer time span compared to short puff durations.

The controller may be configured to adjust the temperature of the heating element in dependence of the puff intensity. In this regard, the heating element may be adjusted to higher temperatures, when puffs of high intensity are taken. Vice versa, the heating element may be adjusted to lower temperatures, when puffs of low intensity are taken. Adjusting the temperature of the heating element may further enable to adjust the amount of aerosol being generated. Such a configuration may allow the controller to adjust the amount of aerosol being generated. In other words, the user may be enabled to consume higher or lower amounts of aerosol depending on the intensity of the puff taken.

Operation of the heating element may be triggered by a puff detection system. The puff detection system may be connected to the controller.

The puff detection system may comprise an airflow sensor. The air flow sensor may be used to measure the airflow rate. The airflow rate is a parameter characterizing the amount of air that is drawn through the airflow path of the aerosol-generating device per time by the user. The initiation of the puff may be detected by the airflow sensor when the airflow exceeds a predetermined threshold.

The puff detection system may also be configured to comprise a pressure sensor. The pressure sensor may be used to measure the pressure of the air inside the air flow channel defined in the aerosol-generating device. The puff detection system may be configured to measure a pressure difference or pressure drop between the ambient outside air pressure and the air flow channel of the aerosol-generating device

Providing a puff detection system may enable to measure one or both of a puff intensity and puff duration. The aerosol-generating device may comprise a user interface connected to the controller. The user interface may be configured to adjust the controller. Such a configuration may enable the user to adjust parameters of the aerosol-generating device manually. For example, the user may be enabled to adjust the temperature of the heating element via the user interface.

As used herein, the term ‘puff intensity’ defines an intensity with which air is inhaled. In this regard, the puff intensity may be defined by an airflow rate during inhalation. Alternatively, the puff intensity may be defined by a pressure difference during inhalation.

The user interface may be configured to receive and display information regarding the status of the aerosol-generating device from the controller. For example, the user may be enabled to keep track of a battery charge of the aerosol-generating device.

The aerosol-generating device further may comprise a deflection element.

The deflection element may be located downstream from the heating element.

The deflection element may be configured to engage with a proximal portion of the elongate aerosol-generating article. Preferably the proximal portion may engage with the deflection element after being consumed.

As used herein ‘consumed’ in the context of a portion of an aerosol-generating article may refer to a state of the portion, wherein the aerosol-forming substrate of the portion may have been mostly (or entirely) aerosolized.

The deflection element may be configured to break a proximal portion from the elongate aerosol-generating article. The deflection element may be configured angled with respect to the longitudinal axis of the cavity. Configuring the deflection element angled with respect to the longitudinal axis of the cavity may result in the proximal portion being bent upon engagement with the deflection element, until the proximal portion may break from the elongate aerosolgenerating article.

The aerosol-generating device may comprise a waste receptacle.

The waste receptacle may be configured to receive broken proximal portions of the elongate aerosol-generating article.

The aerosol-generating device may comprise a mouthpiece. The mouthpiece may comprise an airflow channel through which aerosol formed from the elongate aerosolgenerating article may be inhaled.

The deflection element and the waste receptacle may be formed in the mouthpiece. The deflection element may be a part of the airflow channel, preferably of an outer sidewall of the airflow channel.

The mouthpiece may be configured replaceable. Providing a deflection element and a waste receptable formed in a replaceable mouthpiece, may enable the user to maintain device hygiene by replacing the mouthpiece every time the waste receptacle becomes full.

The driving element may be configured to advance the elongate aerosol-generating article towards the deflection element.

The driving element may be configured to advance the elongate aerosol-generating article towards the deflection element such that a proximal portion of the elongate aerosolgenerating article engages with the deflection element.

The driving element may be configured to advance the elongate aerosol-generating article further after engagement of the proximal portion of the elongate aerosol-generating article with the deflection element. Upon advancing the elongate aerosol-generating article via the driving element further after engagement with the deflection element, mechanical stress may be built up within the proximal portion of the elongate aerosol-generating article. Ultimately, this may result in the proximal portion breaking off the elongate aerosol-generating article. By providing such a configuration of the driving element and the deflection element, proximal portions of the elongate aerosol-generating article may be removed shortly after consumption.

The driving element may be configured to advance the elongate aerosol-generating article towards the deflection element, such that a proximal portion of the elongate aerosolgenerating article breaks off upon engagement with the deflection element.

The deflection element may be configured fixed within the aerosol-generating device.

The deflection element may be arranged downstream the tube-shaped heating element and adjacent to the tube-shaped heating element. Such an arrangement of the deflection element enables direct engagement of the proximal portion of the elongate aerosol-generating article with the deflection element after the proximal portion of the elongate aerosol-generating article has been advanced out of the tube-shaped heating element. Hence, the proximal portion of the elongate aerosol-generating article may be directly removed after being consumed.

The aerosol-generating device may comprise a liquid storage portion. The aerosolgenerating device may be configured to evaporate a portion of the stored liquid to generate an aerosol.

The liquid storage portion may comprise a liquid transfer element for dispensing a liquid aerosol-forming substrate stored in the liquid storage portion. Preferably the liquid transfer element may be made of a porous and fluid permeable material.

The liquid aerosol-forming substrate may comprise suitable mixtures selected from one of more of propylene glycol, glycerol, water, nicotine and flavourants. Preferably the liquid storage portion may have a liquid capacity of up to 2 milliliters.

The liquid storage portion may be refillable. Alternatively, the liquid storage portion may be replaceable.

The liquid transfer element can be brought into contact with the heating element, such that the heating element may be enabled to heat and evaporate a portion of the stored liquid aerosol-forming substrate. Bringing the liquid transfer element into contact with the heating element may bring the liquid storage portion into fluid communication with the heating element. The liquid transfer element may thus dispense liquid aerosol-forming substrate from the liquid storage portion to the heating element. The heating element may then evaporate the dispensed liquid aerosol-forming substrate to generate aerosol.

The heating element may be made from porous material. The heating element may comprise a porosity of between 10% and 60%, preferably 20% to 50%. The porous heating element may be fluid permeable. Providing a porous and fluid permeable heating element may allow transportation of liquid aerosol-forming substrate through the heating element. Upon contact of the liquid transfer element with the porous and fluid permeable heating element, liquid aerosol-forming substrate may be dispensed through the porous heating element. In the case of the tube-shaped heating element, the liquid aerosol-forming substrate may be dispensed through the tube-shaped heating element into the heating chamber. Thus, the liquid aerosol-forming substrate may be evaporated inside the heating chamber of the tube-shaped heating element as to form an aerosol.

Thus, in embodiments the user may experience, within the same aerosol-generating device, both an aerosol derived from a substantially solid aerosol-forming substrate, in the form of an elongate consumable and an aerosol derived from a liquid stored in a liquid reservoir. Thereby, the convenience for the user and the customization capabilities of the device are increased.

The liquid transfer element may comprise a contact surface facing the heating element. The contact surface of the liquid transfer element may comprise a similarly-shaped groove configured to receive the heating element upon bringing the liquid trans transfer element into contact with the heating element.

The heating element may be configured to heat the elongate aerosol-generating article and the liquid aerosol-forming substrate simultaneously, preferably when the liquid transfer element may contact the heating element. Such a configuration may allow to generate aerosol from the elongate aerosol-generating article and the liquid aerosol-forming substrate simultaneously. In this way, the aerosols generated from the elongate aerosol-generating article and the liquid aerosol-forming substrate may be inhaled in combination. The aerosol-generating device may comprise a transfer mechanism via which the liquid transfer element may be brought into contact with the heating element. The liquid storage portion may be configured movable via the transfer mechanism. The liquid storage portion may be moved towards the heating element via the transfer mechanism. The liquid storage portion may be moved away from the heating element via the transfer mechanism. Moving the liquid storage portion towards the heating element via the transfer mechanism may bring the liquid transfer element into contact with the heating element. The liquid transfer element contacting the heating element brings the liquid storage portion and the heating element into fluid communication. Thus, liquid aerosol-forming substrate may be delivered to the heating element and the heating element may generate aerosol from the liquid aerosol-forming substrate. Moving the liquid storage away from the heating element via the transfer mechanism may prevent contact between the liquid transfer element and the heating element. Thus, the fluid communication between the liquid storage portion and the heating element is interrupted and no aerosol may be generated from the liquid aerosol-forming substrate. Providing the transfer mechanism may thus enable controlling the generation of aerosol from the liquid aerosol-forming substrate by movement of the liquid storage portion.

Providing the transfer mechanism may further allow to combine aerosol generated from the liquid aerosol-forming substrate and the elongate aerosol-generating article. The liquid storage portion may be moved towards the heating element, while a portion of the elongate aerosol-generating article is heated by the heating element. Upon contact of the liquid transfer element and the heating element the liquid aerosol-forming substrate may be dispensed to the heating element. Thus, the dispensed liquid aerosol-forming may be heated in parallel to the portion of the elongate aerosol-generating article. Both, solid aerosol-forming substrate of the heated portion of the elongate aerosol-generating article and liquid aerosol-forming substrate from the liquid storage portion may be simultaneously evaporated by the heating element to form an aerosol.

The transfer mechanism may be manually operated by the user.

The transfer mechanism may comprise a flexible biasing element, preferably a spring. The flexible biasing element may be configured to bias the liquid storage portion into a position distant from the heating element. The flexible biasing element may be compressed to bring the liquid storage portion towards the heating element. The flexible biasing element may be compressed by applying a force to the liquid storage portion. The force may be a pushing action directed towards the heating element. Upon compression of the flexible biasing element the liquid transfer element may contact the heating element.

Providing the transfer mechanism with the flexible biasing element enables the user to control the generation of aerosol from the liquid storage portion. When the liquid storage portion is biased by the flexible biasing element in a position way from the heating element, the liquid transfer element may not contact the heating element. Thus, while the liquid storage portion is biased, no aerosol from the liquid aerosol-forming substrate may be generated. The user may bring the liquid transfer element into contact with the heating element by compressing the flexible biasing element.

For example, the user may press the liquid storage portion towards the heating element to compress the flexible biasing element. Thus, the liquid transfer element may be brought into contact with the heating element to generate aerosol from the liquid aerosol-forming substrate. The user may keep the liquid storage portion pressed towards the heating element, to preserve the contact between the liquid transfer element and the heating element. In this way, the liquid aerosol-forming substrate may be dispensed continuously to the heating element. Keeping the liquid storage portion pressed towards the heating element may thus allow to generate aerosol from the liquid aerosol-forming substrate constantly. Releasing the pressure on the liquid storage portion may allow the flexible biasing element to bias the liquid storage portion into the position away from the heating element.

According to an embodiment of the invention there is provided an aerosol-generating system comprising the aerosol-generating device and an elongate aerosol-generating article. The elongate aerosol-generating article is to be received in the cavity of the aerosol-generating device.

According to an embodiment of the invention there may be provided an aerosolgenerating system comprising the aerosol-generating device and an elongate aerosolgenerating article. The elongate aerosol-generating article may be to be received in the cavity of the aerosol-generating device.

The elongate aerosol-generating article may be made solely of the aerosol-forming substrate. Conventional aerosol-generating articles may typically comprise cellulose acetate- tow based filter segments, and aerosol cooling segments arranged within an aerosol-forming substrate portion, all wrapped within an outer paper wrapper. However, these aerosolgenerating articles may pose challenges towards disposal and recycling due to their plastic content and mixture of materials. In contrast to such conventional aerosol-generating articles, elongate aerosol-generating articles of the present invention may be made solely of aerosolforming substrate. Thus, the elongate aerosol-generating articles of the present invention may provide a more sustainable alternative as no acetate-tow filter segments, aerosol cooling segments or paper wrapper may be needed.

The elongate aerosol-generating article may have a length that may be larger than a longitudinal dimension of the tubular heating element. The elongate aerosol-generating article may have a length that may be a multiple of the longitudinal dimension of the tubular heating element.

A length of the elongate aerosol-generating article may be between 50 millimeters and 100 millimeters, preferably between 60 millimeters and 90 millimeters, most preferably between 65 milimeters and 75 millimeters.

Preferably the inner diameter of the heating element may be larger than the diameter of the elongate aerosol-generating article. Providing a heating element with an inner diameter larger than a diameter of the elongate aerosol-generating article, may prevent that the heating element interferes with the advancing aerosol-generating article.

A diameter of the elongate aerosol-generating article may be between 1 millimeter to 4 millimeters, preferably 1.5 millimeters to 3 millimeters, most preferably 1.5 millimeters to 2.5 millimeters. The diameter of the elongate aerosol-generating article may extend in a direction perpendicular to the length of the elongate aerosol-generating article.

A length of the aerosol-generating device may be between 80 millimeters and 150 millimeters, preferably between 90 millimeters and 130 millimeters, most preferably between 100 millimeters and 120 millimeters.

A width of the aerosol-generating device may be between 20 millimeters and 60 millimeters, preferably between 25 and 55 millimeters, most preferably between 30 and 50 millimeters.

A thickness of the aerosol-generating device may be between 10 millimeters and 50 millimeters, preferably between 15 and 45 millimeters, more preferably between 20 and 40 millimeters.

As used herein, the term ‘length’ refers to the major dimension in a longitudinal direction of the aerosol-generating device, of an aerosol-generating article, or of a component of the aerosol-generating device or an aerosol-generating article.

As used herein, the term ‘width’ refers to the major dimension in a transverse direction of the aerosol-generating device, of an aerosol-generating article, or of a component of the aerosol-generating device or an aerosol-generating article, at a particular location along its length.

As used herein, the term ‘thickness’ refers to the dimension in a transverse direction perpendicular to the width.

Alternatively, the resistive heating element may take the form of a metallic grid or grids, a flexible printed circuit board, a molded interconnect device (MID), ceramic heater, flexible carbon fibre heater or may be formed using a coating technique, such as plasma vapour deposition, on a suitable shaped substrate. A resistive heating element may also be formed using a metal having a defined relationship between temperature and resistivity. In such an exemplary device, the metal may be formed as a track between two layers of suitable insulating materials. A resistive heating element formed in this manner may be used to both heat and monitor the temperature of the resistive heating element during operation.

The heating element may be a radiation-based heating element, for example but not limited to a semiconductor based heating element, having an array of individual radiationbased heating elements, for example as shown in WO2017/182249, this reference incorporated by reference in its entirety.

The heating element may be an induction heating element. The induction heating element may comprise one or more induction coils which each may surround the respective cavity. For example, a helical induction coil may extend around the first and second major boundary surfaces of a cavity. The longitudinal axis of the or each induction coil may be substantially parallel to the principal flow axis. For example, the heating element can be configured to have planar coils configured for inductively heating a flat susceptor inside, outside, or in contact with the aerosol-forming substrate of the flat or planar aerosol-forming article, for example as described in WO2015/177043 or WO2015/177044, these references herewith incorporate by reference in their entirety.

As used herein, the term “longitudinal axis” in respect of an induction coil refers to an axis extending through the centre of the coil in a direction generally perpendicular to the turns of the coil.

The induction heating element may be arranged to inductively heat a susceptor. The induction heating element may comprise one or more induction coils located adjacent the first and/or second major boundary surface of a respective cavity. The longitudinal axis of the or each induction coil may be substantially perpendicular to the principal flow axis, for example and to a plane defined by the first major boundary surface.

The one or more induction coils may be planar. For example, a planar induction coil may be located adjacent and in parallel to one of the first and second major boundary surfaces of a respective cavity. For example, a first planar induction coil may be located adjacent and in parallel to the first major boundary surface and a second planar induction coil may be located adjacent and in parallel to the second major boundary surface.

The susceptor may be part of the aerosol-generating device. For example, the susceptor may be arranged on an inner side of the cavity. For example, one or both of the first and second major boundary surfaces of a respective cavity may comprise a susceptor material.

The susceptor may be located on the inner surface of the hollow tube-shaped heating element. In use, a susceptor may be inductively heated by the or each induction coil. The susceptor then, in turn, conductively, convectively and/or radiatively heats the aerosol-forming substrate located in proximity to the susceptor.

A ‘susceptor’ refers to an element that heats up when subjected to a varying or alternating magnetic field. Usually, a susceptor is conductive, and heating of the susceptor is the result of eddy currents being induced in the susceptor or hysteresis losses. Both hysteresis losses and eddy currents can occur in a susceptor. A susceptor may include graphite, molybdenum, silicon carbide, stainless steels, niobium, aluminium and any other conductive elements. Preferably, the susceptor element is a ferrite element. The material and the geometry for the susceptor may be chosen to provide a desired electrical resistance and heat generation.

In the operation of an induction heater, a high frequency alternating current is passed through one or more induction coils to generate one or more corresponding alternating magnetic fields that induce a voltage in a susceptor of an article. The induced voltage causes a current to flow in the susceptor and this current causes Joule heating of the susceptor that in turn heats the aerosol-forming substrate. If the susceptor is ferromagnetic, hysteresis losses in the susceptor may also generate heat.

The term ‘high frequency’ denotes a frequency ranging from about 500 Kilohertz (KHz) to about 30 Megahertz (MHz) (including the range of 500 KHz to 30 MHz), in particular from about 1 Megahertz (MHz) to about 10 MHz (including the range of 1 MHz to 10 MHz), and even more particularly from about 5 Megahertz (MHz) to about 7 Megahertz (MHz) (including the range of 5 MHz to 7 MHz).

Throughout the present disclosure, the term ‘magnetic field’ may refer to a varying or alternating magnetic field.

Throughout the present disclosure, the term ‘current’ may refer to an alternating current.

The heating element may be configured or configurable to heat an article received in the cavity to a temperature less than 350 degrees centigrade, for example less than 300 degrees centigrade, say less than 270 degrees centigrade. In some embodiments, the heater may be configured or configurable to heat an article for forming an aerosol received in the heating chamber to a temperature less than 250, 225, 200, 175 or 150 degrees centigrade, for example less than 140, 130, 120, 110, 100 or 90 degrees centigrade.

The aerosol-generating device may comprise a power source or power supply, typically a battery, within a main body of the aerosol-generating device. In one embodiment, the power supply is a Lithium-ion battery. Alternatively, the power supply may be a Nickel-metal hydride battery, a Nickel cadmium battery, or a Lithium based battery, for example a Lithium-Cobalt, a Lithium-lron-Phosphate, Lithium Titanate or a Lithium-Polymer battery. As an alternative, the power supply may be another form of charge storage device such as a capacitor. The power supply may require recharging and may have a capacity that enables to store enough energy for one or more usage experiences; for example, the power supply may have sufficient capacity to continuously generate aerosol for a period of around six minutes or for a period of a multiple of six minutes. In another example, the power supply may have sufficient capacity to provide a predetermined number of puffs or discrete activations of the heating element. The controller may be connected to the power supply.

As used herein, the term “aerosol-forming substrate” refers to a substrate capable of releasing volatile compounds that can form an aerosol. Such volatile compounds may be released by heating the aerosol-forming substrate. The aerosol-forming substrate may be in solid form or may be in liquid form. The aerosol-forming substrate may be solid or liquid or may comprise both solid and liquid components. An aerosol-forming substrate may be part of an aerosol-generating article. The terms ‘aerosol’ and ‘vapor’ are used synonymously.

The aerosol-forming substrate may comprise a pharmaceutically active compound. The aerosol-forming substrate may comprise one or more of: tobacco, nicotine, a gel composition and a flavour agent. The aerosol-forming substrate may comprise nicotine.

The aerosol-forming substrate may comprise one or more of botanicals, botanical drugs, and pharmaceutical ingredients. The one or more of botanicals, botanical drugs, and pharmaceutical ingredients may be part of an aerosol-forming substrate that can be at least partially aerosolized with an aerosol former for inhalation. The aerosol-forming substrate may comprise one or more of botanicals, botanical drugs, and pharmaceutical ingredients, wherein the substrate has an aerosol former content of between 5% and 30% by weight on a dry weight basis.

Preferably, the aerosol-forming substrate comprises plant material and an aerosol former. Preferably, the plant material is a plant material comprising an alkaloid, more preferably a plant material comprising nicotine, and more preferably a tobacco-containing material.

Preferably, the aerosol-forming substrate comprises at least 70 percent of plant material, more preferably at least 90 percent of plant material by weight on a dry weight basis. Preferably, the aerosol-forming substrate comprises less than 95 percent of plant material by weight on a dry weight basis, such as from 90 to 95 percent of plant material by weight on a dry weight basis.

Preferably, the aerosol-forming substrate comprises at least 5 percent of aerosol former, more preferably at least 10 percent of aerosol former by weight on a dry weight basis. Preferably, the aerosol-forming substrate comprises less than 30 percent of aerosol former by weight on a dry weight basis, such as from 5 to 30 percent of aerosol former by weight on a dry weight basis.

In some particularly preferred embodiments, the aerosol-forming substrate comprises plant material and an aerosol former, wherein the substrate has an aerosol former content of between 5% and 30% by weight on a dry weight basis. The plant material is preferably a plant material comprising an alkaloid, more preferably a plant material comprising nicotine, and more preferably a tobacco-containing material. Alkaloids are a class of naturally occurring nitrogencontaining organic compounds. Alkaloids are found mostly in plants, but are also found in bacteria, fungi and animals. Examples of alkaloids include, but are not limited to, caffeine, nicotine, theobromine, atropine and tubocurarine. A preferred alkaloid is nicotine, which may be found in tobacco.

An aerosol-forming substrate may comprise nicotine. An aerosol-forming substrate may comprise tobacco, for example may comprise a tobacco-containing material containing volatile tobacco flavour compounds, which are released from the aerosol-forming substrate upon heating. In preferred embodiments an aerosol-forming substrate may comprise homogenised tobacco material, for example cast leaf tobacco. The aerosol-forming substrate may comprise both solid and liquid components. The aerosol-forming substrate may comprise a tobacco-containing material containing volatile tobacco flavour compounds, which are released from the substrate upon heating. The aerosol-forming substrate may comprise a nontobacco material. The aerosol-forming substrate may comprise hybrid botanicals. The aerosolforming substrate may comprise CBD. The aerosol-forming substrate may comprise THC. The aerosol-forming substrate may further comprise an aerosol former. Examples of suitable aerosol formers are glycerine and propylene glycol.

The aerosol-forming substrate may comprise at least one aerosol-former. An aerosolformer is any suitable known compound or mixture of compounds that, in use, facilitates formation of a dense and stable aerosol and that is substantially resistant to thermal degradation at the temperature of operation of the system. Suitable aerosol-formers are well known in the art and include, but are not limited to: polyhydric alcohols, such as triethylene glycol, 1 ,3-butanediol and glycerine; 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. Aerosol formers may be polyhydric alcohols or mixtures thereof, such as triethylene glycol, 1 ,3-butanediol and glycerine. The aerosolformer may be propylene glycol. The aerosol former may comprise both glycerine and propylene glycol.

The aerosol-forming substrate may also be provided in a liquid form. The liquid aerosolforming substrate may comprise other additives and ingredients, such as flavourants. The liquid aerosol-forming substrate may comprise water, solvents, ethanol, plant extracts and natural or artificial flavours. The liquid aerosol-forming substrate may comprise nicotine. The liquid aerosol-forming substrate may have a nicotine concentration of between about 0.5% and about 10%, for example about 2%. The liquid aerosol-forming substrate may be contained in a liquid storage portion of the aerosol-generating article, in which case the aerosol-generating article may be denoted as a cartridge.

As used herein, the term “tobacco material” is used to describe any material comprising tobacco, including, but not limited to, tobacco leaf, tobacco rib, tobacco stem, tobacco stalk, tobacco dust, expanded tobacco, reconstituted tobacco material and homogenised tobacco material.

As used herein, the term “homogenised tobacco” denotes a material formed by agglomerating particulate tobacco. Homogenized tobacco may include reconstituted tobacco or cast leaf tobacco, or a mixture of both. The term “reconstituted tobacco” refers to paperlike material that can be made from tobacco by-products, such as tobacco fines, tobacco dusts, tobacco stems, or a mixture of the foregoing. Reconstituted tobacco can be made by extracting the soluble chemicals in the tobacco by-products, processing the leftover tobacco fibers into a sheet, and then reapplying the extracted materials in concentrated form onto the sheet.

The term “cast leaf” is used herein to refer to a sheet product made by a casting process that is based on casting a slurry comprising plant particles (for example, clove particles, or tobacco particles and clove particles in a mixture) and a binder (for example, guar gum) onto a supportive surface, such as a belt conveyor, drying the slurry and removing the dried sheet from the supportive surface. An example of the casting or cast leaf process is described in, for example- in U.S. Patent No. 5,724,998 for making cast leaf tobacco, this reference herewith incorporated by reference in its entirety. In a cast leaf process, particulate plant materials are mixed with a liquid component, typically water, to form a slurry. Other added components in the slurry may include fibres, a binder and an aerosol former. The particulate plant materials may be agglomerated in the presence of the binder. The slurry is cast onto a supportive surface and dried to form a sheet of homogenised plant material.

The aerosol-forming substrate may comprise one or more flavourants. As used herein, the term "flavourant" refers to a composition having organoleptic properties, which provide a sensory experience to the user, for example to enhance the flavour of aerosol. A flavourant can be used to deliver a gustatory sensation (taste), an olfactory sensation (smell), or both a gustatory and an olfactory sensation to the user, for example when inhaling the aerosol.

As used herein, 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. An aerosol-generating article may be disposable. An aerosol-generating article comprising an aerosol-forming substrate comprising tobacco may be referred to herein as a tobacco stick.

As used herein, the term “aerosol-generating device” refers to a device that interacts with an aerosol-forming substrate to generate an aerosol. An aerosol-generating device may interact with one or both of an aerosol-generating article comprising an aerosol-forming substrate, and a cartridge comprising an aerosol-forming substrate. In some examples, the aerosol-generating device may heat the aerosol-forming substrate to facilitate release of volatile compounds from the substrate. An electrically operated aerosol-generating device may comprise an atomiser, such as an electric heater, to heat the aerosol-forming substrate to form an aerosol.

As used herein, the term "aerosol-generating system" refers to the combination of an aerosol-generating device with an aerosol-forming substrate. When the aerosol-forming substrate forms part of an aerosol-generating article, the aerosol-generating system refers to the combination of the aerosol-generating device with the aerosol-generating article. In the aerosol-generating system, the aerosol-forming substrate and the aerosol-generating device cooperate to generate an aerosol.

As used herein, the term ‘smoking’ with reference to a device, article, system, substrate, or otherwise does not refer to conventional smoking in which an aerosol-forming substrate is fully or at least partially combusted. The aerosol-generating device of the present invention is arranged to heat the aerosol-forming substrate to a temperature below a combustion temperature of the aerosol-forming substrate, but at or above a temperature at which one or more volatile compounds of the aerosol-forming substrate are released to form an inhalable aerosol.

As used herein, the term ‘usage session’ refers to a period in which a series of puffs are applied by a user to extract aerosol from an aerosol-forming substrate.

As used herein, the terms ‘proximal’, ‘distal’, ‘downstream’ and ‘upstream’ are used to describe the relative positions of components, or portions of components, of the aerosolgenerating device and the aerosol-generating article in relation to the direction in which a user draws on the aerosol-generating device or aerosol-generating article during use thereof.

The aerosol-generating device may comprise a mouth end through which in use an aerosol exits the aerosol-generating device and is delivered to a user. In use, a user draws on the proximal or mouth end of the aerosol-generating device in order to inhale an aerosol generated by the aerosol-generating device. The aerosol-generating device may comprise a distal end opposed to the proximal or mouth end. The proximal or mouth end of the aerosolgenerating device may also be referred to as the downstream end and the distal end of the aerosol-generating device may also be referred to as the upstream end. Components, or portions of components, of the aerosol-generating device may be described as being upstream or downstream of one another based on their relative positions between the proximal, downstream or mouth end and the distal or upstream end of the aerosol-generating device.

As used herein, the terms ‘tubular’, ‘tubular unit’, ‘tubular component’, ‘tubular element’, ‘tube-shaped’, and ‘tubular shape’ refer to three-dimensional objects and three-dimensional geometric shapes comprising a bottom basal plane, a top basal plane, and a sidewall circumscribing a hollow central core, the sidewall being arranged between the bottom basal plane and the top basal plane. The sidewall extends along a longitudinal axis of the tubular element between the bottom basal plane and the top basal plane. The longitudinal axis may be perpendicular to one or both of the bottom basal plane and the top basal plane.

A bottom base of the tubular element lies within the bottom basal plane. A top base of the tubular element lies within the top basal plane. A cross-sectional shape of one or both of the bottom and top bases may be circular. A cross-sectional shape of one or both of the bottom and top bases may be non-circular, for example elliptic, stadium-shaped, or rectangular. One or both of the bottom base and the top base may be at least partly open to provide an internal hollow passage of the tubular element.

The tubular element may have the shape of a right circular hollow cylinder. The tubular element may have the shape of a non-circular hollow cylinder, for example an elliptic hollow cylinder, or a stadium-shaped hollow cylinder. The tubular element may have the shape of a hollow cuboid.

The longitudinal axis of the tubular element may be arranged in parallel to the longitudinal axis of the aerosol-generating device. A longitudinal central axis of the tubular element may coincide with a longitudinal cavity axis.

Below, there is provided a non-exhaustive list of non-limiting examples. Any one or more of the features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.

Example 1 : An aerosol-generating device for use with an elongate aerosolgenerating article, the aerosol-generating device comprising: a cavity for receiving the elongate aerosol-generating article, a heating element for heating the elongate aerosol-generating article, and a driving element for moving the elongate aerosol-generating article with respect to the heating element.

Example 2: The aerosol-generating device according to example 1 , wherein the cavity for receiving the elongate aerosol-generating article is cylindrically shaped, preferably tube-shaped. Example 3: The aerosol-generating device according to example 1 , wherein the cylindrically shaped cavity defines a longitudinal axis that corresponds to the axis of insertion of the elongate aerosol-generating article.

Example 4: The aerosol-generating device according to any of the preceding examples, wherein the heating element is hollow, preferably tube-shaped.

Example 5: The aerosol-generating device according to any of the preceding examples, wherein the at least one heating element is collinearly arranged with the cavity.

Example 6: The aerosol-generating device according to any of the preceding examples, wherein the driving element is configured to advance the elongate aerosolgenerating article from the cavity towards the heating element.

Example 7: The aerosol-generating device according to any of the preceding examples, wherein the driving element is configured to move the elongate aerosol-generating article through the (tube-shaped) heating element.

Example 8: The aerosol-generating device according to any of the preceding examples, wherein the driving element comprises a motor, preferably a stepper motor to move the elongate aerosol-generating article.

Example 9: The aerosol-generating device according to any of the preceding examples, wherein driving element comprises a toothed wheel, and wherein the motor of the driving element is used to drive the toothed wheel.

Example 10: The aerosol-generating device according to any of the preceding examples, wherein driving element comprises a roller that is biased against the toothed wheel by a tensioning mechanism, wherein the elongate aerosol-generating article is clamped between the toothed wheel and the biased roller.

Example 11 : The aerosol-generating device according to any of the preceding examples, wherein upon activation of the driving element the elongate aerosol-generating article is moved along the longitudinal axis of the cavity.

Example 12: The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device further comprises a controller configured to operate the driving element and the heating element.

Example 13: The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device further comprises a deflection element.

Example 14: The aerosol-generating device according to any of the preceding examples, wherein the deflection element is located downstream from the heating element.

Example 15: The aerosol-generating device according to any of the preceding examples, wherein the deflection element is configured to engage with a proximal portion of the elongate aerosol-generating article. Example 16: The aerosol-generating device according to any of the preceding examples, wherein the deflection element is configured to break a proximal portion from the elongate aerosol-generating article.

Example 17: The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device comprises a waste receptacle.

Example 18: The aerosol-generating device according to any of the preceding examples, wherein the waste receptacle is configured to receive broken proximal portions of the elongate aerosol-generating article.

Example 19: The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device comprises a mouthpiece.

Example 20: The aerosol-generating device according to any of the preceding examples, wherein the deflection element and the waste receptacle is formed in the mouthpiece.

Example 21 : The aerosol-generating device according to any of the preceding examples, wherein the mouthpiece is configured replaceable.

Example 22: The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device comprises a liquid storage portion, and wherein the aerosol-generating device is configured to evaporate a portion of the stored liquid to generate an aerosol.

Example 23: The aerosol-generating device according to any of the preceding examples, wherein the liquid storage portion comprises a liquid transfer element for dispensing a liquid aerosol-forming substrate stored in the liquid storage portion.

Example 24: The aerosol-generating device according to any of the preceding examples, wherein the liquid transfer element can be brought into contact with the heating element, such that the heater is enabled to heat and evaporate a portion of the stored liquid aerosol-forming substrate

Example 25: The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device comprises a transfer mechanism via which liquid transfer element is brought into contact with the heating element.

Example 26: The aerosol-generating device according to any of the preceding examples, wherein the transfer mechanism is manually operated by the user.

Example 27: An aerosol-generating system comprising the aerosol-generating device according to any of the preceding examples and an elongate aerosol-generating article that is to be received in the cavity of the aerosol-generating device. Example 28: An aerosol-generating system according to the preceding example, wherein the elongate aerosol-generating article has a length that is larger than a longitudinal dimension of the tubular heating element.

Example 29: An aerosol-generating system according to the preceding example, wherein the elongate aerosol-generating article has a length that is a multiple of the longitudinal dimension of the tubular heating element.

Features described in relation to one embodiment may equally be applied to other embodiments of the invention.

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

Fig. 1A shows an aerosol-generating device;

Fig. 1 B shows an aerosol-generating system;

Fig. 2 shows a driving element;

Fig. 3 shows a diagram;

Fig. 4 shows an aerosol-generating article;

Fig. 5A and 5B show an aerosol-generating system;

Fig. 6A and 6B show a liquid transfer element;

Fig. 7 shows an aerosol-generating device;

Figure 1A shows an aerosol-generating device 10 comprising a main body 12 and a mouthpiece 14. The mouthpiece 14 comprises an airflow channel 16 and enables a user to inhale aerosol generated by the aerosol-generating device aerosol-forming substrate. The main body 12 comprises a cavity 18 configured to receive an elongate aerosol-generating article 34 (shown in Figure 1 B). The main body 12 further comprises an opening 20 at a distal end of the main body 12 through which the elongate aerosol-generating article 34 may be inserted. The aerosol-generating device 10 comprises a tube-shaped heating element 24 configured to heat a portion of the elongate aerosol-generating article 34 inside a heating chamber (not shown). The aerosol-generating device 10 further comprises a driving element 22 arranged colinear with the cavity 18 and the tube-shaped heating element 24. The driving element 22 is configured to advance the elongate aerosol-generating article 34 towards and through the tube-shaped heating element 24. The driving element 22 is operable by a stepper motor (not shown). The aerosol-generating device 10 comprises a deflection element 26 arranged downstream of the tube-shaped heating element 24. A waste receptacle is arranged upstream the deflection element 26. The aerosol-generating device 10 further comprises an electronic circuitry 30. The electronic circuitry 30 comprises a power supply in the form of a battery. The electronic circuitry 30 further comprises a controller 38. The controller 38 is connected to the tube-shaped heating element 24 and the driving element 22. The controller 38 is further configured to activate the heating element and operate the driving element 22. The controller 38 is configured to operate the driving element 22 based on a puff intensity.

The controller 38 is further configured to activate the heating element based on the puff intensity. Thus, more intensive puffs by the user result in the drive system advancing the elongate aerosol-generating article 34 for a further distance compared to less intensive puffs. More intensive puffs by the user further result in the tube-shaped heating element 24 heating a larger portion of the elongate aerosol-generating article 34 compared to less intensive puffs. A puff detection in the form of an airflow sensor (not shown) is connected to the controller 38 and configured to measure an airflow rate defining the puff intensity.

Figure 1 B shows an aerosol-generating system 32 comprising the aerosol-generating device 10 and an elongate aerosol-generating article 34 received inside the cavity 18. As shown in figure 1 B the elongate aerosol-generating article 34 has been advanced by the driving element 22 towards and through the tube-shaped heating element 24. The tube-shaped heating element 24 is configured to heat the portion of the elongate aerosol-generating article 34 located inside the hollow central core of the tube-shaped heating element 24. The heated portion of the elongate aerosol-generating article 34 forms an aerosol which can be inhaled through the mouthpiece 14 by a user. The driving element 22 is configured to advance the portion located inside the tube-shaped heating element 24 further towards deflection plate, after the portion of the elongate aerosol-generating article 34 is consumed (shown in Figure 4).

Figure 2 shows the elongate aerosol-generating article 34 being advanced by the driving element 22 towards and through the tube-shaped heating element 24 from a cross- sectional side view. The driving element 22 comprises a toothed wheel 36 which is rotatable upon activation of a stepping motor (not shown) connected to the toothed wheel 36. The driving element 22 further comprises a roller 38 connected to a tensioning mechanism. The tensioning mechanism comprises a tensioning arm 40 and a tensioning spring 42 being configured to bias the roller 38 towards the toothed wheel 36. Inserting the elongate aerosol-generating article 34 into the cavity 18 (not shown), results in the elongate aerosol-generating article 34 being clamped in-between the toothed wheel 36 and the biased roller 38. During rotation of the toothed wheel 36, the elongate aerosol-generating article 34 is gripped by the toothed wheel 36 and advanced towards and through the tube-shaped heating element 24. Figure 3 shows a diagram with three graphs illustrating an airflow rate over time. Each of the three graphs corresponds to a puff having differing puff intensity. Puff A has a higher airflow rate compared to Puffs B and C. Thus, puff A has a higher puff intensity compared to Puffs B and C. As the controller operates the driving element of the aerosol-generating device based on the puff intensity, puff A results in the elongate aerosol-generating article 34 being advanced for a larger distance by the driving element, compared to puffs B and C. Thus, puff A would result in more of the elongate aerosol-generating article 34 being consumed, compared to puffs B and C. Vice versa, puff C would result in less of the elongate aerosolgenerating article 34 being consumed compared to puffs A and B.

Figure 4 shows a side view of the elongate aerosol-generating article 34 received in the aerosol-generating device 10. The elongate aerosol-generating article 34 comprises a proximal portion 44 which has already been advanced through the tube-shaped heating element 24 and thus being already consumed. After advancing beyond the tube-shaped heating element 24, the proximal portion 44 engages with the deflection element 26. Upon engagement with the deflection element 26, the elongate aerosol-generating article 34 is bent. Upon further advancing of the elongate aerosol-generating article 34, the proximal portion 44 of the elongate aerosol-generating article 34 breaks from the elongate aerosol-generating article 34 and falls into the waste receptable 28 as indicated by arrow 46. The waste perceptible is configured to receive and collect multiple consumed proximal portions 44.

Figure 5A and 5B show an embodiment of aerosol-generating system 32. The elongated aerosol-generating article 34 is received inside the aerosol-generating device 10. A portion of the elongate aerosol-generating article 34 is located inside the tube-shaped heating element 24. The aerosol-generating device 10 further comprises a liquid storage portion 48 configured to store a liquid aerosol-forming substrate. The liquid storage portion 48 comprises a liquid transfer element 50 (shown in Figures 6A and 6B). The liquid transfer element 50 is porous and configured to receive liquid aerosol-forming substrate from the liquid storage portion 48. In Figure 5A the liquid storage portion 48 is arranged distant from the tube-shaped heating element 24. The liquid storage portion 48 can be moved towards the tube-shaped heating element such that the liquid transfer element 50 of the liquid storage portion 48 contacts the tube-shaped heating element 24 (see Figure 5B). The liquid transfer element 50 contacting the tube-shaped heating element 24 allows liquid aerosol-forming substrate to be dispensed from the liquid storage portion 48 to the tube-shaped heating element 24. The tubeshaped heating element 24 in figures 5A and 5B is porous and fluid permeable. Thus, the liquid aerosol-forming substrate is dispensed through the tube-shaped heating element 24 into the heating chamber (not shown). The heating element 24 evaporates the dispensed liquid aerosol-forming substrate as to form aerosol. The heating element 24 is further configured to heat the elongate aerosol-generating article 34 and the liquid aerosol-forming substrate simultaneously, when the liquid transfer element 50 contacts the heating element (see Figure 5B). As the liquid transfer element 50 contacts the tube-shaped heating element 24, liquid aerosol-forming substrate is dispensed from the liquid storage portion 48 to the heating chamber of the tube-shaped heating element 24. Meanwhile, a portion of the elongated aerosol-generating article 34 is located inside the tube-shaped heating element 24. Thus, the dispensed liquid aerosol-forming substrate and the portion of the elongate aerosol-generating article 34 are heated simultaneously. In this way, aerosol from the elongate aerosol-generating article 34 and the liquid aerosol-forming substrate may be generated simultaneously. Subsequently, the aerosol generated from the elongate aerosol-generating article 34 and the liquid aerosol-forming substrate can be inhaled in combination.

Figures 6A and 6B show the liquid transfer element 50 being brought into contact with the tube-shaped heating element 24 from a side view. The liquid transfer element 50 comprises a contacting surface 52 facing the tube-shaped heating element 24. The contacting surface 52 further comprises a groove 54 into which the tube-shaped heating element 24 is accommodated upon bringing the liquid transfer element 50 into contact with the tube-shaped heating element 24.

Figure 7 shows a side view of aerosol-generating system 32. The aerosol-generating device 10 of the aerosol-generating system 32 comprises a user interface 56 arranged on an outer surface of the main body 12. The user interface 56 is connected to the controller 38. The user interface 56 is further configured to adjust the controller 38. Thus, the user interface 56 enables a user to adjust functions or parameters of the aerosol-generating device 10 manually. For example, the user interface 56 enables the user to adjust the temperature of the heating element.

The user interface 56 is further configured to receive and display information regarding the status of the aerosol-generating device 10 from the controller 38. Thus, the user interface 56 enables the user to receive a status of the aerosol-generating device 10 for example, a battery charge of the aerosol-generating device 10.

Claims

1. An aerosol-generating device for use with an elongate aerosol-generating article, the aerosol-generating device comprising: a cavity for receiving the elongate aerosol-generating article, a heating element for heating the elongate aerosol-generating article, and a driving element for moving the elongate aerosol-generating article with respect to the heating element.

2. The aerosol-generating device according to claim 1 , wherein the heating element is hollow, preferably tube-shaped.

3. The aerosol-generating device according to any of the preceding claims, wherein the driving element is configured to advance the elongate aerosol-generating article from the cavity towards the heating element.

4. The aerosol-generating device according to any of the preceding claims, wherein the driving element is configured to move the aerosol-generating article through the (tube-shaped) heating element.

5. The aerosol-generating device according to any of the preceding claims, wherein the driving element comprises a motor, preferably a stepper motor to move the elongate aerosol-generating article

6. The aerosol-generating device according to any of the preceding claims, wherein the aerosol-generating device further comprises a controller configured to operate the driving element and the heating element.

7. The aerosol-generating device according to any of the preceding claims, wherein the aerosol-generating device further comprises a deflection element.

8. The aerosol-generating device according to any of the preceding claims, wherein the aerosol-generating device comprises a waste receptacle.

9. The aerosol-generating device according to any of the preceding claims, wherein the aerosol-generating device comprises a mouthpiece.

10. The aerosol-generating device according to any of the preceding claims, wherein the deflection element and the waste receptacle is formed in the mouthpiece.

11. The aerosol-generating device according to any of the preceding claims, wherein the aerosol-generating device comprises a liquid storage portion, and wherein the aerosol-generating device is configured to evaporate a portion of the stored liquid to generate an aerosol.

12. The aerosol-generating device according to any of the preceding claims, wherein the liquid storage portion comprises a liquid transfer element for dispensing a liquid aerosol-forming substrate stored in the liquid storage portion.

13. The aerosol-generating device according to any of the preceding claims, wherein the liquid transfer element can be brought into contact with the heating element, such that the heater is enabled to heat and evaporate a portion of the stored liquid aerosol-forming substrate.

14. An aerosol-generating system comprising the aerosol-generating device according to any of the preceding claims and an elongate aerosol-generating article that is to be received in the cavity of the aerosol-generating device.

15. The aerosol-generating system according to the preceding claim, wherein the elongate aerosol-generating article has a length that is larger than a longitudinal dimension of the tubular heating element.