WO2024235810A1

WO2024235810A1 - Aerosol-generating device with article detection

Info

Publication number: WO2024235810A1
Application number: PCT/EP2024/062808
Authority: WO
Inventors: Michele Andrea CATTONI; Ezequiel Martin Valdez Rojas; Valerio OLIANA; Reda IDRISSI KAITOUNI
Original assignee: Philip Morris Products SA
Current assignee: Philip Morris Products SA
Priority date: 2023-05-12
Filing date: 2024-05-08
Publication date: 2024-11-21
Anticipated expiration: 2025-11-12
Also published as: CN121001600A

Abstract

The invention relates to an aerosol-generating device for use with an aerosol-generating article of a first type and for use with an aerosol-generating article of a different second type. The aerosol-generating device comprises an article detector configured to detect whether an aerosol-generating article for use with the device is of the first type or of the second type. The aerosol-generating device further comprises a controller. The controller is configured to control operation of the aerosol-generating device in a first operational mode when an aerosol-generating article of the first type is detected by the article detector. The controller is configured to control operation of the aerosol-generating device in a second operational mode when an aerosol-generating article of the second type is detected by the article detector. The first operational mode differs from the second operational mode by one or more of: a predetermined maximum number of puffs before each respective operational mode is ended; a predetermined maximum duration before each respective operational mode is ended; a predetermined maximum volume of aerosol generated before each respective operational mode is ended. The invention further relates to an aerosol-generating system and a method for controlling operation of an aerosol-generating article.

Description

AEROSOL-GENERATING DEVICE WITH ARTICLE DETECTION

The present invention relates to an aerosol-generating device, an aerosol-generating system and a method for controlling operation of an 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. Aerosol-forming substrate may be provided as part of an aerosolgenerating 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. Aerosol-generating devices are typically designed to operate best when used with an original and specifically designed aerosol-generating article. Furthermore, manufacturers of aerosol-generating articles may offer a product line of an aerosol-generating article in a variety of types with different characteristics, such as flavor, nicotine content, quantity of aerosol-generating substrate, quality of aerosol-forming substrate, and/or the material(s) comprised in the aerosol-forming substrate.

It would be desirable to provide an aerosol-generating device capable of identifying an aerosol-generating article. It would be desirable to provide an aerosol-generating device capable of detecting an authorized aerosol-generating article. It would be desirable to provide an aerosol-generating device capable of detecting an aerosol-generating article with enhanced reliability. It would be desirable to provide an aerosol-generating device with improved detection capabilities. It would be desirable to have an aerosol-generating device providing an optimized user experience. It would be desirable to have an aerosol-generating article enabling improved identification by an aerosol-generating device.

According to an embodiment of the invention there may be provided an aerosolgenerating device for use with an aerosol-generating article of a first type and for use with an aerosol-generating article of a different second type. The aerosol-generating device may comprise an article detector that may be configured to detect whether an aerosol-generating article for use with the device may be of the first type or of the second type. The aerosolgenerating device may further comprise a controller. The controller may be configured to control operation of the aerosol-generating device in a first operational mode when an aerosol-generating article of the first type may be detected by the article detector. The controller may be configured to control operation of the aerosol-generating device in a second operational mode when an aerosol-generating article of the second type may be detected by the article detector. The first operational mode may differ from the second operational mode by one or more of: a predetermined maximum number of puffs before each respective operational mode may be ended; a predetermined maximum duration before each respective operational mode may be ended; a predetermined maximum volume of aerosol generated before each respective operational mode may be ended.

According to an embodiment of the invention there is provided an aerosol-generating device for use with an aerosol-generating article of a first type and for use with an aerosolgenerating article of a different second type. The aerosol-generating device comprises an article detector configured to detect whether an aerosol-generating article for use with the device is of the first type or of the second type. The aerosol-generating device further comprises a controller. The controller is configured to control operation of the aerosolgenerating device in a first operational mode when an aerosol-generating article of the first type is detected by the article detector. The controller is configured to control operation of the aerosol-generating device in a second operational mode when an aerosol-generating article of the second type is detected by the article detector. The first operational mode differs from the second operational mode by one or more of: a predetermined maximum number of puffs before each respective operational mode is ended; a predetermined maximum duration before each respective operational mode is ended; a predetermined maximum volume of aerosol generated before each respective operational mode is ended.

The aerosol-generating device according to the invention may be capable of identifying an aerosol-generating article, particularly an authorized aerosol-generating article. The aerosol-generating device according to the invention may be capable of operating differently depending upon an identified type of aerosol-generating article. This may be beneficial if aerosol-generating articles of different types are to be used with a single aerosolgenerating device. Exemplarily, the aerosol-generating article of a first type may enable a different user experience in comparison with an aerosol-generating article of a different second type. Having a single aerosol-generating device able to operate in different modes for both of such different aerosol-generating articles may be convenient for user. For instance, this avoids the need for the user to possess a variety of different devices each for use with a particular type of aerosol-generating article. The first operational mode may further differ from the second operational mode by a heating profile of a heating element of the aerosol-generating device.

A heating profile of the heating element may comprise one or more of: a duration of operation of the heating element, a maximum temperature of the heating element, a minimum temperature of the heating element, an average temperature of the heating element and a temperature profile of the heating element. A temperature profile may comprise one or more temperature set points to which the aerosol-forming substrate and/or the heating element is heated. Exemplarily, a larger aerosol volume per puff may be desired in the first operational mode. This may be realized by, for example, one or both of a higher maximum temperature and a higher average temperature of the heating element. In the second operational mode, a lower aerosol volume per puff may be desired. This may be realized by, for example, one or both of a lower maximum temperature and a lower average temperature of the heating element. In a further example, a quicker aerosol delivery may be desired in the first operational mode. This may be realized by, for example, a quicker temperature increase in the temperature profile of the heating element. A slow aerosol delivery may be desired in the second operational mode. This may be realized by, for example, a slower temperature increase in the temperature profile of the heating element.

In one example, the aerosol-generating device comprises a second article detector. The second article detector may be an inductive heating arrangement which, together with the controller, is configured to identify an electrical characteristic of a susceptor in the aerosol-generating article for use with the device. The electrical characteristic may comprise, for instance, the electrical current drawn by the inductive hearing arrangement when the susceptor is within the inductive heating arrangement. The controller may be configured to select one of a plurality of pre-stored heating profile for use with the aerosol-generating article based on the identified electrical characteristic of the susceptor of the aerosolgenerating article, e.g. as described in WO 2022/069582.

The first operational mode may differ from the second operational mode by at least two of: the predetermined maximum number of puffs before each respective operational mode may be ended; the predetermined maximum duration before each respective operational mode may be ended; the predetermined maximum volume of aerosol generated before each respective operational mode may be ended.

Particularly preferred, the first operational mode may have a predetermined maximum number of puffs and a predetermined maximum duration before the end of the first operational mode. The second operational mode may have a predetermined maximum volume of aerosol generated and a predetermined maximum duration before the end of the second operational mode.

In one or both of the first and second operational modes, power may be continually or continuously supplied to a heating element of the aerosol-generating device. Power may be continually or continuously supplied to generate aerosol continually or continuously for more than 20 seconds, more preferably for more than 30 seconds, more preferably for more than 40 seconds, more preferably for more than 60 seconds, more preferably for more than 100 seconds, most preferably for more than 200 seconds.

In one or both of the first and second operational modes, power may be continually or continuously supplied to a heating element of the aerosol-generating device. Power may be continually or continuously supplied to heat the aerosol-forming substrate continually or continuously for more than 20 seconds, more preferably for more than 30 seconds, more preferably for more than 40 seconds, more preferably for more than 60 seconds, more preferably for more than 100 seconds, most preferably for more than 200 seconds.

The aerosol-generating device may be configured for continuous heating for the duration of the user experience. The aerosol-generating device may not be a flash-type device. The operational modes of the aerosol-generating device may be independent from the puffs of a user apart from a potential ending of the operation in dependence of a maximum number of user puffs. In other words, the aerosol-generating device may be operated according to a predetermined scheme in contrast to conventional flash-type devices which heat only as a direct response to a puff detection.

The predetermined maximum number of puffs may be 20. The predetermined maximum number of puffs may be 19. The predetermined maximum number of puffs may be 18. The predetermined maximum number of puffs may be 17. The predetermined maximum number of puffs may be 16. The predetermined maximum number of puffs may be 15. The predetermined maximum number of puffs may be 14. The predetermined maximum number of puffs may be 13. The predetermined maximum number of puffs may be 12. The predetermined maximum number of puffs may be 11. The predetermined maximum number of puffs may be 10. The predetermined maximum number of puffs may be 9. The predetermined maximum number of puffs may be 8.

The predetermined maximum number of puffs of the first operational mode may be 10 or less. The predetermined maximum number of puffs of the second operational mode may be more than 10.

The predetermined maximum number of puffs of the first operational mode may be 14 or less. The predetermined maximum number of puffs of the second operational mode may be more than 14. The predetermined maximum number of puffs of the first operational mode may be 18 or less. The predetermined maximum number of puffs of the second operational mode may be more than 18.

The predetermined maximum number of puffs of the second operational mode may be lower than the predetermined maximum number of puffs of the first operational mode.

The predetermined maximum duration may be below 10 minutes. The predetermined maximum duration may be below 9 minutes. The predetermined maximum duration may be below 8 minutes. The predetermined maximum duration may be below 7 minutes. The predetermined maximum duration may be below 6 minutes. The predetermined maximum duration may be below 5 minutes. The predetermined maximum duration may be below 4 minutes. The predetermined maximum duration may be below 3 minutes.

The predetermined maximum duration of the first operational mode may be 4 minutes or less. The predetermined maximum number of puffs of the second operational mode may be more than 4 minutes.

The predetermined maximum duration of the first operational mode may be 6 minutes or less. The predetermined maximum number of puffs of the second operational mode may be more than 6 minutes.

The predetermined maximum duration of the first operational mode may be 8 minutes or less. The predetermined maximum number of puffs of the second operational mode may be more than 8 minutes.

The predetermined maximum duration of the second operational mode may be lower than the predetermined maximum duration of the first operational mode.

The controller may be configured to choose a heating profile of the aerosolgenerating device depending upon an article detector output.

The controller may be configured to choose a different heating profile for each different type of aerosol-generating article.

The controller may comprise a memory. The memory may comprise pre-stored reference data. The reference data may comprise reference signals of the article detector. Each reference signal may correspond to an aerosol-generating article having a specific type.

The memory may comprise pre-stored reference data of operational modes for different types of aerosol-generating article. Exemplarily, the memory may comprise pre-start reference data of the at least a first operational mode and a second operational mode and preferably a third operational mode, a fourth operational mode and a fifth operational mode associated to corresponding first, second, third, fourth and fifth types of aerosol-generating articles. Each of the first, second, third, fourth and fifth types of aerosol-generating articles may be different from each other as described herein. Each one of the different types of aerosol-generating article for use with the device may differ from the others by one or more characteristics, such as flavor, nicotine content, quantity of aerosol-generating substrate, quality of aerosol-forming substrate, and/or the material(s) comprised in the aerosol-forming substrate.

The controller may be configured to compare an article detector output with the prestored reference data.

The controller may be configured to correlate the article detector output with the prestored reference data. The controller may be configured to detect and identify the type of the aerosol-generating article by correlating the article detector output with the pre-stored reference data.

The controller may be configured to initiate an operational mode, preferably the first operational mode or the second operational mode, depending upon the detected type of aerosol-generating article.

The controller may be configured to, in dependence on the article type identified, adjust one or more of: an amplitude of a current supplied to a heating element of the aerosolgenerating device; a frequency of a current supplied to the heating element; a time period of power supply; a temperature of the heating element; a signal powering the heating element and a maximum number of power pulses to the heating element.

Increasing or decreasing the amplitude of the current supplied to the heating element may increase or decrease the heating temperature of the heating element. Increasing or decreasing the frequency of the current supplied to the heating element may increase or decrease the heating temperature of the heating element. Increasing or decreasing the time period of power supply to the heating element may increase or decrease the heating duration of the heating element. The signal powering the heating element may enable powering of the heating element or disabled powering of the heating element. The mixture duration of activation of the heating element may be controlled by the signal powering the heating element. The maximum number of power pulses to the heating element may determine the maximum number of puffs. Each power pulse sent to the heating element may correspond to a user puff.

The aerosol-generating device may further comprise a cavity. The cavity may be configured for receiving the aerosol-generating article of the first type and for receiving the aerosol-generating article of the different second type.

The article detector may be configured to detect if an aerosol-generating article may be received in the cavity.

The aerosol-generating device may further comprise a communication interface. The communication interface may be connected with the controller. The communication interface may be configured to allow a user to select at least one parameter of at least one of the operational modes.

The communication interface may comprise a button. The communication interface may comprise at least two buttons. A first button may be associated with a parameter of the first operational mode of the aerosol-generating device. Pressing of the first button may set the parameter of the first operational mode. The perimeter may, as described herein, comprise one or more of: an amplitude of a current supplied to a heating element of the aerosol-generating device; a frequency of a current supplied to the heating element; a time period of power supply; a temperature of the heating element; a signal powering the heating element and a maximum number of power pulses to the heating element. The second but may have a corresponding functionality associated with a parameter of the second operational mode of the aerosol-generating device.

The communication interface may comprise a display. The display may be configured as a touch sensitive display. Similar to the description of the button functionality above, the display may be configured to enable a user to control a parameter of the operational modes, preferably of one or both of the first operational mode and the second operational mode.

The communication interface may comprise an LED. The communication device may comprise at least two LEDs. The LED or the LEDs may signal to a user one or more parameters of the operational modes, preferably of one of the first operational mode and the second operational mode.

The controller may be configured to monitor a puff volume during an operational mode.

The controller may be configured to end the operational mode if the cumulative puff volume reaches the predetermined maximum volume of aerosol generated.

The cumulative puff volume may be determined as disclosed in WO 2022/003072 A1 , the relevant disclosure thereof is incorporated by reference herein. Particularly, the disclosure of WO 2022/003072 A1 relating to the analyzing of a monitored parameter during a user puff to calculate a puff volume, the puff volume being a volume of aerosol generated during the user puff, and using the puff volume as a parameter for controlling operation of the device as disclosed in WO 2022/003072 A1 is incorporated by reference herein.

The aerosol-generating device may be configured for use with a first, second and third type of aerosol-generating article. The third type of aerosol-generating article may be different from the first and second types of aerosol-generating articles.

The aerosol-generating device may comprise a third operational mode. The controller may be configured to control operation of the aerosol-generating device in the third operational mode when an aerosol-generating article of the third type may be detected by the article detector. The third operational mode may differ from the first and second operational modes by one or more of: a predetermined maximum number of puffs before each respective operational mode may be ended; a predetermined maximum duration before each respective operational mode may be ended; a predetermined maximum volume of aerosol generated before each respective operational mode may be ended.

The aerosol-generating device may be configured for use with a first, second, third and fourth type of aerosol-generating article. The fourth type of aerosol-generating article may be different from the first, second and third types of aerosol-generating articles.

The aerosol-generating device may comprise a fourth operational mode. The controller may be configured to control operation of the aerosol-generating device in the fourth operational mode when an aerosol-generating article of the fourth type may be detected by the article detector. The fourth operational mode may differ from the first, second and third operational modes by one or more of: a predetermined maximum number of puffs before each respective operational mode may be ended; a predetermined maximum duration before each respective operational mode may be ended; a predetermined maximum volume of aerosol generated before each respective operational mode may be ended.

The aerosol-generating device may be configured for use with a first, second, third, fourth and fifth type of aerosol-generating article. The fifth type of aerosol-generating article may be different from the first, second, third and fourth types of aerosol-generating articles.

The aerosol-generating device may comprise a fifth operational mode. The controller may be configured to control operation of the aerosol-generating device in the fifth operational mode when an aerosol-generating article of the fifth type may be detected by the article detector. The fifth operational mode may differ from the first, second, third and fourth operational modes by one or more of: a predetermined maximum number of puffs before each respective operational mode may be ended; a predetermined maximum duration before each respective operational mode may be ended; a predetermined maximum volume of aerosol generated before each respective operational mode may be ended. The invention further relates to an aerosol-generating system that may comprise the aerosol-generating device, preferably as described herein, and an aerosol-generating article of a first type and an aerosol-generating article of a different second type. Each of the aerosol-generating articles comprises aerosol-forming substrate.

The invention further relates to an aerosol-generating system comprising an aerosolgenerating device, preferably as described herein and an aerosol-generating article of a first type and an aerosol-generating article of a different second type. Each of the aerosolgenerating articles comprises aerosol-forming substrate.

The aerosol-generating system may further comprise an aerosol-generating article of a different third type. The aerosol-generating article of the third type may comprise aerosolforming substrate.

The aerosol-generating system may further comprise an aerosol-generating article of a different fourth type. The aerosol-generating article of the fourth type may comprise aerosol-forming substrate.

The aerosol-generating system may further comprise an aerosol-generating article of a different fifth type. The aerosol-generating article of the fifth type may comprise aerosolforming substrate.

One type of the aerosol-generating article may differ from a different type of the aerosol-generating article in one or more of: aerosol-forming substrate type; aerosol-forming substrate amount; aerosol-forming substrate quality; total generatable aerosol volume, heating properties of the aerosol-forming substrate and the material(s) comprised in the aerosol-forming substrate.

The quality of the aerosol-forming substrate may refer to a grade of tobacco.

The total generated aerosol volume may refer to a cumulative puff volume as described herein that is inhaled by a user during a user experience. As mentioned herein, the respective teaching of WO 2022/003072 A1 relating to determining of an aerosol volume is incorporated herein by reference. As a specific example, the volume of an individual puff may be determined by calculated the integral of power in time from the puff start to the puff end. The integral of the power over time may equal the energy supply to a heating element of the aerosol-generating device. The energy may in turn correspond to the heat injected into the aerosol-generating article. The heat injected may correspond approximately to the heat a user takes away with a volume of cooling airflow. The cooling airflow may correspond to a volume of inhaled aerosol. The determination of a puff start end of a puff and is also disclosed in WO 2022/003072 A1 and the relevant disclosure thereof is included herein by reference.

The heating properties of the aerosol-forming substrate may comprise the minimum vaporization temperature necessary for vaporizing desired components of the aerosol- substrate. The heating properties of the aerosol-forming substrate may comprise a maximum temperature of the aerosol-forming substrate below which release of unwanted components of the aerosol-forming substrate is reduced or prevented.

One type of the aerosol-generating article may be free of tobacco and a different type of the aerosol-generating article may comprise tobacco.

The first type of aerosol-generating article may be free of tobacco and the second type of aerosol-generating article may comprise tobacco.

One type of the aerosol-generating article may comprise a flavour additive and a different type of the aerosol-generating article may be free of flavour additives.

The first type of aerosol-generating article may comprise a flavour additive and the second type of aerosol-generating article may be free of flavour additives.

One type of the aerosol-generating article may comprise botanicals and a different type of the aerosol-generating article may be free of botanicals.

The first type of aerosol-generating article may comprise botanicals and the second type of aerosol-generating article may be free of botanicals.

One or more of the first, second and third types of aerosol-generating articles may comprise tobacco.

The fourth aerosol-generating article may be tobacco free.

The fifth aerosol-generating article may contain botanicals.

The first type of aerosol-generating article may contain less and/or lower quality tobacco than the second type of aerosol-generating article.

The third type of aerosol-generating article may contain more and/or higher quality tobacco than the second type of aerosol-generating article.

The invention further relates to a method for controlling operation of an aerosolgenerating device, preferably as described herein, the method may comprise one or more of: detecting, by the article detector, a type of aerosol-generating article received in the cavity, and controlling, by the controller, an operational mode of the aerosol-generating device depending upon the detected type of aerosol-generating article.

The aerosol-generating device may be configured to be used with a plurality of different types of aerosol-generating articles.

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. Alternatively, a user may directly draw on an aerosol-generating article inserted into an opening at the proximal end of the aerosolgenerating device. The opening at the proximal end may be an opening of the cavity. The aerosol-generating device comprises a distal end opposed to the proximal or mouth end. The proximal or mouth end of the aerosol-generating 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, an ‘aerosol-generating device’ relates to a device that interacts with an aerosol-forming substrate to generate an aerosol. The aerosol-forming substrate may be part of an aerosol-generating article, for example part of a smoking article. An aerosolgenerating device may be a smoking device that interacts with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol that is directly inhalable into a user’s lungs thorough the user's mouth. An aerosol-generating device may be a holder. The device may be an electrically heated smoking device. The aerosol-generating device may comprise a housing, electric circuitry, a power supply, a heating chamber and a heating element.

As used herein with reference to the present invention, 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 aerosolforming substrate are released to form an inhalable aerosol.

The aerosol-generating device may have a length of between 86 millimeters to 130 millimeters.

The cavity of the aerosol-generating device may have an open end into which the aerosol-generating article is inserted. The open end may be a proximal end. The cavity may have a closed end opposite the open end. The closed end may be the base of the cavity. The closed end may be closed except for the provision of air apertures arranged in the base. The base of the cavity may be flat. The base of the cavity may be circular. The base of the cavity may be arranged upstream of the cavity. The open end may be arranged downstream of the cavity. The cavity may have an elongate extension. The cavity may have a longitudinal central axis. A longitudinal direction may be the direction extending between the open and closed ends along the longitudinal central axis. The longitudinal central axis of the cavity may be parallel to the longitudinal axis of the aerosol-generating device.

The cavity may be configured as a heating chamber. The cavity may have a cylindrical shape. The cavity may have a hollow cylindrical shape. The cavity may have a shape corresponding to the shape of the aerosol-generating article to be received in the cavity. The cavity may have a circular cross-section. The cavity may have an elliptical or rectangular cross-section. The cavity may have an inner diameter corresponding to the outer diameter of the aerosol-generating article.

An airflow channel may run through the cavity. Ambient air may be drawn into the aerosol-generating device, into the cavity and towards the user through the airflow channel. Downstream of the cavity, a mouthpiece may be arranged or a user may directly draw on the aerosol-generating article. The airflow channel may extend through the mouthpiece. The cavity may have a length of between 28 millimeters and 67 millimeters. The cavity may have a diameter of between 8 millimeters and 12 millimeters.

In any of the aspects of the disclosure, the heating element may comprise an electrically resistive material. Suitable electrically resistive materials include but are not limited to: semiconductors such as doped ceramics, electrically "conductive" ceramics (such as, for example, molybdenum disilicide), carbon, graphite, metals, metal alloys and composite materials made of a ceramic material and a metallic material. Such composite materials may comprise doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbides. Examples of suitable metals include titanium, zirconium, tantalum platinum, gold and silver. Examples of suitable metal alloys include stainless steel, nickel-, cobalt-, chromium-, aluminium- titanium- zirconium-, hafnium-, niobium-, molybdenum-, tantalum-, tungsten-, tin-, gallium-, manganese-, gold- and iron- containing alloys, and super-alloys based on nickel, iron, cobalt, stainless steel, Timetai® and iron-manganese-aluminium based alloys. In composite materials, the electrically resistive material may optionally be embedded in, encapsulated or coated with an insulating material or vice-versa, depending on the kinetics of energy transfer and the external physicochemical properties required.

Alternatively or additionally to utilizing a heating element in the aerosol-generating device for vaporizing the aerosol-forming substrate, an aerosol-generating arrangement may be employed. The aerosol-generating arrangement may be an ultrasonic aerosol-generating arrangement; and

Alternatively or additionally to utilizing a heating element in the aerosol-generating device for vaporizing the aerosol-forming substrate, a heating arrangement may be employed. The heating arrangement may be an inductive, resistive, dielectric or microwave heating arrangement. As described, in any of the aspects of the disclosure, the heating element may be part of an aerosol-generating device. The aerosol-generating device may comprise an internal heating element or an external heating element, or both internal and external heating elements, where "internal" and "external" refer to the aerosol-forming substrate. An internal heating element may take any suitable form. For example, an internal heating element may take the form of a heating blade. Alternatively, the internal heater may take the form of a casing or substrate having different electro-conductive portions, or an electrically resistive metallic tube. Alternatively, the internal heating element may be one or more heating needles or rods that run through the center of the aerosolforming substrate. Other alternatives include a heating wire or filament, for example a Ni-Cr (Nickel-Chromium), platinum, tungsten or alloy wire or a heating plate. Optionally, the internal heating element may be deposited in or on a rigid carrier material. In one such embodiment, the electrically resistive heating element may 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 on a suitable insulating material, such as ceramic material, and then sandwiched in another insulating material, such as a glass. Heaters formed in this manner may be used to both heat and monitor the temperature of the heating elements during operation.

An external heating element may take any suitable form. For example, an external heating element may take the form of one or more flexible heating foils on a dielectric substrate, such as polyimide. The flexible heating foils can be shaped to conform to the perimeter of the substrate receiving cavity. Alternatively, an external 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. An external 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. An external heating element formed in this manner may be used to both heat and monitor the temperature of the external heating element during operation.

As an alternative to an electrically resistive heating element, the heating element may be configured as an induction heating element. The induction heating element may comprise a heating induction coil and a susceptor. In general, a susceptor is a material that is capable of generating heat, when penetrated by an alternating magnetic field. When located in an alternating magnetic field. If the susceptor is conductive, then typically eddy currents are induced by the alternating magnetic field. If the susceptor is magnetic, then typically another effect that contributes to the heating is commonly referred to hysteresis losses. Hysteresis losses occur mainly due to the movement of the magnetic domain blocks within the susceptor, because the magnetic orientation of these will align with the magnetic induction field, which alternates. Another effect contributing to the hysteresis loss is when the magnetic domains will grow or shrink within the susceptor. Commonly all these changes in the susceptor that happen on a nano-scale or below are referred to as “hysteresis losses”, because they produce heat in the susceptor. Hence, if the susceptor is both magnetic and electrically conductive, both hysteresis losses and the generation of eddy currents will contribute to the heating of the susceptor. If the susceptor is magnetic, but not conductive, then hysteresis losses will be the only means by which the susceptor will heat, when penetrated by an alternating magnetic field. The susceptor may be electrically conductive or magnetic or both electrically conductive and magnetic. An alternating magnetic field generated by one or several induction coils heat the susceptor, which then transfers the heat to the aerosol-forming substrate, such that an aerosol is formed. The heat transfer may be mainly by conduction of heat. Such a transfer of heat is best, if the susceptor is in close thermal contact with the aerosol-forming substrate.

The aerosol-generating device may comprise a 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 invention further relates to an aerosol-generating device for use with a plurality of different aerosol-generating articles. The aerosol-generating device comprises an article classifier configured to determine that an aerosol-generating article engaged with the device is a first article type from the plurality of different aerosol-generating articles. The aerosolgenerating device further comprises control circuitry configured to determine a maximum heating time associated with the first article type and at least one of: a maximum number of puffs associated with the first article type, and a maximum volume of aerosol associated with the first article type. The control circuitry is configured to cease heating the aerosolgenerating article after the maximum heating time has elapsed and to cease heating the aerosol-generating article after the maximum number of puffs or the maximum volume of aerosol has been reached. 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. For example, an aerosol-generating article may be a smoking article that generates an aerosol that is directly inhalable into a user’s lungs through the user's mouth. An aerosolgenerating article may be disposable.

An aerosol-generating article may comprise a plurality of elements, including one or more of a mouthpiece, a spacer, a hollow acetate tube, a sensorial media plug and a front plug. All elements may be connected to each other by an outer wrapper. An aerosolgenerating article may have a cylindrical shape.

The front plug may be used as an end portion of the aerosol-generating article. The front plug may be used to ensure that the sensorial media is retained within the aerosolgenerating article. The front plug may be made from a material that allows air to be drawn through the front plug. The front plug may be made from a material having an adequate porosity. The front plug may be made from a filter material. The front plug may be made from cellulose acetate tow. The front plug may be made from one or more materials selected from the group comprising ceramic, polymer, biopolymer, metal, zeolite, paper, cardboard, inert material, and inorganic material.

The aerosol-generating article may be substantially cylindrical in shape. The aerosolgenerating article may be substantially elongate. The aerosol-generating article may have a length and a circumference substantially perpendicular to the length. The aerosol-generating article may be substantially rod shaped. The aerosol-forming substrate may be substantially cylindrical in shape. The aerosol-forming substrate may be substantially elongate. The aerosol-forming substrate may also have a length and a circumference substantially perpendicular to the length. The aerosol-forming substrate may be substantially rod shaped.

The aerosol-generating article may have a total length between 55 millimeters and 110 millimeters, preferably of between 60 millimeters and 90 millimeters. The aerosolgenerating article may have an external diameter between 4.5 millimeters and 17 millimeters, preferably between 6 millimeters and 9 millimeters. The aerosol-generating article may comprise a filter plug. The filter plug may be located at a downstream end of the aerosolgenerating article. The filter plug may be a cellulose acetate filter plug. The filter plug is approximately 7 millimeters in length in one embodiment, but may have a length of between approximately 5 millimeters to approximately 10 millimeters.

The aerosol-generating article may comprise a separation between the aerosolforming substrate and the filter plug. The separation may be approximately 18 millimeters, but may be in the range of 5 millimeters to 25 millimeters.

As used herein, the term ‘aerosol-forming substrate’ relates to a substrate capable of releasing one or more volatile compounds that can form an aerosol. Such volatile compounds may be released by heating the aerosol-forming substrate. An aerosol-forming substrate may conveniently be part of an aerosol-generating article.

The aerosol-forming substrate may be a solid aerosol-forming substrate. The aerosolforming 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 non-tobacco material. The aerosol-forming substrate may comprise an aerosol former that facilitates the formation of a dense and stable aerosol. Examples of suitable aerosol formers are glycerine and propylene glycol.

The aerosol-generating substrate preferably comprises homogenised tobacco material, an aerosol-former and water. Providing homogenised tobacco material may improve aerosol generation, the nicotine content and the flavour profile of the aerosol generated during heating of the aerosol-generating article. Specifically, the process of making homogenised tobacco involves grinding tobacco leaf, which more effectively enables the release of nicotine and flavours upon heating.

The invention further relates to an aerosol-generating system that may comprise the aerosol-generating device as described herein and an aerosol-generating article as described herein.

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

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 ex1. An aerosol-generating device for use with an aerosol-generating article of a first type and for use with an aerosol-generating article of a different second type comprising: an article detector configured to detect whether an aerosol-generating article for use with the device is of the first type or of the second type, and a controller, wherein the controller is configured to control operation of the aerosolgenerating device in a first operational mode when an aerosol-generating article of the first type is detected by the article detector, wherein the controller is configured to control operation of the aerosol-generating device in a second operational mode when an aerosolgenerating article of the second type is detected by the article detector, and wherein the first operational mode differs from the second operational mode by one or more of: a predetermined maximum number of puffs before each respective operational mode is ended; a predetermined maximum duration before each respective operational mode is ended; a predetermined maximum volume of aerosol generated before each respective operational mode is ended.

Example ex1a. An aerosol-generating device for use with an aerosol-generating article of a first type and for use with an aerosol-generating article of a different second type comprising: an article detector configured to detect whether an aerosol-generating article for use with the device is of the first type or of the second type, and a controller, wherein the controller is configured to control operation of the aerosolgenerating device in a first operational mode when an aerosol-generating article of the first type is detected by the article detector, wherein the controller is configured to control operation of the aerosol-generating device in a second operational mode when an aerosolgenerating article of the second type is detected by the article detector, and wherein the first operational mode differs from the second operational mode.

Example 1 b. The aerosol-generating device according to example ex1 a, wherein the first operational mode differs from the second operational mode by one or more of: a predetermined maximum number of puffs before each respective operational mode is ended; a predetermined maximum duration before each respective operational mode is ended; a predetermined maximum volume of aerosol generated before each respective operational mode is ended.

Example ex2. The aerosol-generating device according to any of the preceding examples, wherein the first operational mode further differs from the second operational mode by a heating profile of a heating element of the aerosol-generating device.

Example ex3. The aerosol-generating device according to any of the preceding examples, wherein the first operational mode differs from the second operational mode by at least two of: the predetermined maximum number of puffs before each respective operational mode is ended; the predetermined maximum duration before each respective operational mode is ended; the predetermined maximum volume of aerosol generated before each respective operational mode is ended.

Example ex4. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum number of puffs is 20, preferably wherein the predetermined maximum number of puffs is 19, preferably wherein the predetermined maximum number of puffs is 18, preferably wherein the predetermined maximum number of puffs is 17, preferably wherein the predetermined maximum number of puffs is 16, preferably wherein the predetermined maximum number of puffs is 15, preferably wherein the predetermined maximum number of puffs is 14, preferably wherein the predetermined maximum number of puffs is 13, preferably wherein the predetermined maximum number of puffs is 12, preferably wherein the predetermined maximum number of puffs is 11 , preferably wherein the predetermined maximum number of puffs is 10, more preferably wherein the predetermined maximum number of puffs is 9, most preferably wherein the predetermined maximum number of puffs is 8.

Example ex5. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum number of puffs of the first operational mode is 10 or less, and wherein the predetermined maximum number of puffs of the second operational mode is more than 10.

Example ex6. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum number of puffs of the first operational mode is 14 or less, and wherein the predetermined maximum number of puffs of the second operational mode is more than 14.

Example ex7. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum number of puffs of the first operational mode is 18 or less, and wherein the predetermined maximum number of puffs of the second operational mode is more than 18.

Example ex8. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum number of puffs of the second operational mode is lower than the predetermined maximum number of puffs of the first operational mode.

Example ex9. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum duration is below 10 minutes, preferably wherein the predetermined maximum duration is below 9 minutes, preferably wherein the predetermined maximum duration is below 8 minutes, preferably wherein the predetermined maximum duration is below 7 minutes, preferably wherein the predetermined maximum duration is below 6 minutes, preferably wherein the predetermined maximum duration is below 5 minutes, more preferably wherein the predetermined maximum duration is below 4 minutes, most preferably wherein the predetermined maximum duration is below 3 minutes.

Example ex10. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum duration of the first operational mode is 4 minutes or less, and wherein the predetermined maximum number of puffs of the second operational mode is more than 4 minutes.

Example ex11. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum duration of the first operational mode is 6 minutes or less, and wherein the predetermined maximum number of puffs of the second operational mode is more than 6 minutes.

Example ex12. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum duration of the first operational mode is 8 minutes or less, and wherein the predetermined maximum number of puffs of the second operational mode is more than 8 minutes.

Example ex13. The aerosol-generating device according to any of the preceding examples, wherein the predetermined maximum duration of the second operational mode is lower than the predetermined maximum duration of the first operational mode.

Example ex14. The aerosol-generating device according to any of the preceding examples, wherein the controller is configured to choose a heating profile of the aerosol-generating device depending upon an article detector output.

Example ex15. The aerosol-generating device according to any of the preceding examples, wherein the controller comprises a memory, wherein the memory comprises pre-stored reference data, wherein the reference data comprises reference signals of the article detector, preferably wherein each reference signal corresponds to an aerosol-generating article having a specific type.

Example ex16. The aerosol-generating device according to example ex15, wherein the controller is configured to compare an article detector output with the pre-stored reference data.

Example ex17. The aerosol-generating device according to example ex16, wherein the controller is configured to correlate the article detector output with the pre-stored reference data, preferably wherein the controller is configured to detect and identify the type of the aerosol-generating article by correlating the article detector output with the pre-stored reference data. Example ex18. The aerosol-generating device according to any of the preceding examples, wherein the controller is configured to, in dependence on the article type identified, adjust one or more of: an amplitude of a current supplied to a heating element of the aerosol-generating device; a frequency of a current supplied to the heating element; a time period of power supply; a temperature of the heating element; a signal powering the heating element and a maximum number of power pulses to the heating element.

Example ex19. The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device further comprises a cavity, wherein the cavity is configured for receiving the aerosol-generating article of the first type and for receiving the aerosol-generating article of the different second type.

Example ex20. The aerosol-generating device according to example ex19, wherein the article detector is configured to detect if an aerosol-generating article is received in the cavity.

Example ex21. The aerosol-generating device according to any of the preceding examples, wherein the aerosol-generating device further comprises a communication interface, wherein the communication interface is connected with the controller, and wherein the communication interface is configured to allow a user to select at least one parameter of at least one of the operational modes.

Example ex22. The aerosol-generating device according to any of the preceding examples, wherein the controller is configured to monitor a puff volume during an operational mode.

Example ex23. The aerosol-generating device according to example ex22, wherein the controller is configured to end the operational mode if the cumulative puff volume reaches the predetermined maximum volume of aerosol generated.

Example ex24. An aerosol-generating system comprising the aerosolgenerating device of any of the preceding examples and an aerosol-generating article of a first type and an aerosol-generating article of a different second type, each of the aerosolgenerating articles comprising aerosol-forming substrate.

Example ex25. The aerosol-generating system of example ex24, wherein the aerosol-generating system further comprises an aerosol-generating article of a different third type, the aerosol-generating article of the third type comprising aerosol-forming substrate, preferably wherein the aerosol-generating system further comprises an aerosol-generating article of a different fourth type, the aerosol-generating article of the fourth type comprising aerosol-forming substrate, more preferably wherein the aerosol-generating system further comprises an aerosol-generating article of a different fifth type, the aerosol-generating article of the fifth type comprising aerosol-forming substrate. Example ex26. The aerosol-generating system of example ex24 or ex25, wherein one type of the aerosol-generating article differs from a different type of the aerosolgenerating article in one or more of: aerosol-forming substrate type; aerosol-forming substrate amount; aerosol-forming substrate quality; total generatable aerosol volume and heating properties of the aerosol-forming substrate.

Example ex27. The aerosol-generating system of any of examples ex24 to ex26, wherein one type of the aerosol-generating article is free of tobacco and a different type of the aerosol-generating article comprises tobacco.

Example ex28. The aerosol-generating system of any of examples ex24 to ex27, wherein one type of the aerosol-generating article comprises a flavour additive and a different type of the aerosol-generating article is free of flavour additives.

Example ex29. The aerosol-generating system of any of examples ex24 to ex28, wherein one type of the aerosol-generating article comprises botanicals and a different type of the aerosol-generating article is free of botanicals.

Example ex30. A method for controlling operation of an aerosol-generating device, preferably according to any of examples ex1 to ex23, the method comprising:

- detecting, by the article detector, a type of aerosol-generating article received in the cavity, and

- controlling, by the controller, an operational mode of the aerosol-generating device depending upon the detected type of aerosol-generating article.

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. 1 shows an aerosol-generating article in an aerosol-generating device.

Figure 1 shows an aerosol-generating article 10 comprising aerosol-forming substrate. The aerosol-generating article 10 is received in an aerosol-generating device 12. More particularly, the aerosol-generating device 12 comprises a cavity 14 configured for receiving the aerosol-generating article 10. The cavity 14 is configured to receive different aerosol-generating articles 10. The cavity 14 is configured to receive a first type of aerosolgenerating article 10 and a different second type of aerosol-generating article 10.

The cavity 14 is configured as a heating chamber. A heating arrangement 16 is arranged in or around the cavity 14 for heating the aerosol-forming substrate of the aerosolgenerating article 10.

The aerosol-generating device 12 comprises an article sensor 18 configured to detect a type of aerosol-generating article 10 received in the cavity 14. The article sensor 18 is configured to detect a first type of aerosol-generating article 10. The article sensor 18 is configured to detect a second type of aerosol-generating article 10.

The aerosol-generating article 10 comprises an identification element 20. The identification element 20 of the aerosol-generating article 10 is indicative of the type of aerosol-generating article 10. The article sensor 18 is configured to detect the identification element 20 of the aerosol-generating article 10. In one specific example, which is provided for illustrative purposes only, the identification element 20 is a bar code and the article sensor 18 is a bar code reader.

The aerosol-generating device 12 comprises a controller 22 and a memory (not shown). The controller 22 is electrically connected with the article sensor 18. The controller 22 is configured to receive the sensor output of the article sensor 18. The sensor output of the article sensor 18 comprises information about the detected identification element 20 of the aerosol-generating article 10 received in the cavity 14. The controller 22 is configured to evaluate the sensor output of the article sensor 18. The controller 22 is configured to identify the received aerosol-generating article 10 by evaluating the article sensor 18 output.

The controller 22 is configured to control operation of the aerosol-generating device 12 in a first operational mode if the controller 22 identifies a first type of aerosol-generating article 10 received in the cavity 14. The controller 22 is configured to control operation of the aerosol-generating device 12 in a different second operational mode if the controller 22 identifies a second type of aerosol-generating article 10 received in the cavity 14.

The aerosol-generating device 12 comprises a power supply 24. The power supply 24 is configured as a battery. The power supply 24 is configured to supply electrical energy to the controller 22. The power supply 24 is configured to supply electrical energy to the article detector. The power supply 24 is configured to supply electrical energy to the heating arrangement 16 for heating of the aerosol-generating article 10. The control of supply of electrical energy from the power supply 24 to one or both of the article detector and the heating arrangement 16 is controlled by the controller 22. The supply of electrical energy from the power supply 24 to one or both of the article detector the heating arrangement 16 may be different between the first operational mode the second operational mode.

In one specific example, the heating arrangement 16 is an inductive heating arrangement comprising an induction coil. The induction coil is configured to heat a susceptor in the aerosol-generating article 10. The inductive heating arrangement and the controller are configured to determine an electrical property of the susceptor to identify the type of susceptor in the aerosol-generating article 10. In this way, the inductive hearting arrangement acts as a second article detector. The controller 22 is configured to select one of a plurality of pre-stored heating profiles based on the identified type of susceptor. The controller 22 is configured to apply the selected heating profile for operating the heating arrangement 16 to heat the aerosol-generating article 10.

The aerosol-generating device 12 further comprises a communication interface 26. In the embodiment shown in Figure 1 , the communication interface 26 is configured as a touch sensitive display. Alternatively or additionally, the communication interface 26 may comprise or may be configured as buttons or LEDs. The communication interface 26 may enable a user to select one or more parameters of one or more of the operational modes of the aerosol-generating device 12. The communication interface 28 may operate in dependence on the detected type of aerosol-generating article for use with the device. For instance, the communication interface 28 may output an indication of the flavor of the detected type of aerosol-generating article, the type of aerosol-generating substrate of the detected type of aerosol-generating article and/or the nicotine content of the detected type of aerosolgenerating article.

The controller 22 is configured to store in the memory a log of the types of aerosolgenerating articles used. For instance, the controller 22 may store in the memory one or more of: a cumulative amount of each respective type of article used with the device (optionally, over a predetermined time, e.g. a day, a week, a month, or a year) and a ratio of the amount of each respective type of article used with the device to the amount of another (or all other) type(s) of article(s) used with the device.

An exemplary first operational mode may be characterized in a predetermined maximum duration of 8 minutes. After that, the heating arrangement 16 is deactivated. An exemplary second operational mode may be characterized in a predetermined maximum duration of 6 minutes. After that, the heating arrangement 16 is deactivated. An exemplary third operational mode may be characterized in a predetermined maximum duration of 4 minutes. After that, the heating element 16 is deactivated.

An exemplary first operational mode may be characterized in a predetermined maximum number of puffs of 18. After that, the heating element 16 is deactivated. An exemplary second operational mode may be characterized in a predetermined maximum number of puffs of 14. After that, the heating element 16 is deactivated. An exemplary third operational mode may be characterized in a predetermined maximum number of puffs of 10. After that, the heating element 16 is deactivated.

An exemplary first type of aerosol-generating article 10 comprises a tobacco free cast leaf using Hydroxypropyl methyl cellulose as a film forming agent. The first type of aerosolgenerating article 10 may use carboxymethyl cellulose as an additional binder. The first type of aerosol-generating article 10 may comprise nicotine as an added ingredient. The first type of aerosol-generating article 10 may comprise cellulose fibers as a tensile strength improver. An exemplary second type of aerosol-generating article 10 may comprise botanicals, preferably natural botanicals. The second type of aerosol-generating article 10 may be free of artificial flavor additives.

Claims

1 . An aerosol-generating device for use with an aerosol-generating article of a first type and for use with an aerosol-generating article of a different second type comprising: an article detector configured to detect whether an aerosol-generating article for use with the device is of the first type or of the second type, and a controller, wherein the controller is configured to control operation of the aerosolgenerating device in a first operational mode when an aerosol-generating article of the first type is detected by the article detector, wherein the controller is configured to control operation of the aerosol-generating device in a second operational mode when an aerosolgenerating article of the second type is detected by the article detector, and wherein the first operational mode differs from the second operational mode by one or more of: a predetermined maximum number of puffs before each respective operational mode is ended; a predetermined maximum duration before each respective operational mode is ended; a predetermined maximum volume of aerosol generated before each respective operational mode is ended.

2. The aerosol-generating device according to claim 1 , wherein the first operational mode further differs from the second operational mode by a heating profile of a heating element of the aerosol-generating device.

3. The aerosol-generating device according to claim 1 or 2, wherein the first operational mode differs from the second operational mode by at least two of: the predetermined maximum number of puffs before each respective operational mode is ended; the predetermined maximum duration before each respective operational mode is ended; the predetermined maximum volume of aerosol generated before each respective operational mode is ended.

4. The aerosol-generating device according to any of the preceding claims, wherein, wherein in one or both of the first and second operational modes, power is continually or continuously supplied to a heating element of the aerosol-generating device, preferably to generate aerosol continually or continuously for more than 20 seconds, more preferably for more than 30 seconds, more preferably for more than 40 seconds, more preferably for more than 60 seconds, more preferably for more than 100 seconds, most preferably for more than 200 seconds.

5. The aerosol-generating device according to any of the preceding claims, wherein the predetermined maximum number of puffs of the second operational mode is lower than the predetermined maximum number of puffs of the first operational mode.

6. The aerosol-generating device according to any of the preceding claims, wherein the predetermined maximum duration of the first operational mode is 6 minutes or less, and wherein the predetermined maximum number of puffs of the second operational mode is more than 6 minutes.

7. The aerosol-generating device according to any of the preceding claims, wherein the controller is configured to, in dependence on the article type identified, adjust one or more of: an amplitude of a current supplied to a heating element of the aerosolgenerating device; a frequency of a current supplied to the heating element; a time period of power supply; a temperature of the heating element; a signal powering the heating element and a maximum number of power pulses to the heating element.

8. The aerosol-generating device according to any of the preceding claims, wherein the controller is configured to monitor a puff volume during an operational mode.

9. The aerosol-generating device according to claim 8, wherein the controller is configured to end the operational mode if the cumulative puff volume reaches the predetermined maximum volume of aerosol generated.

10. An aerosol-generating system comprising the aerosol-generating device of any of the preceding claims and an aerosol-generating article of a first type and an aerosolgenerating article of a different second type, each of the aerosol-generating articles comprising aerosol-forming substrate.

11. The aerosol-generating system of claim 10, wherein one type of the aerosolgenerating article differs from a different type of the aerosol-generating article in one or more of: aerosol-forming substrate type; aerosol-forming substrate amount; aerosol-forming substrate quality; total generatable aerosol volume and heating properties of the aerosolforming substrate.

12. The aerosol-generating system of any of claims 10 to 11 , wherein one type of the aerosol-generating article is free of tobacco and a different type of the aerosol-generating article comprises tobacco.

13. The aerosol-generating system of any of claims 10 to 12, wherein one type of the aerosol-generating article comprises a flavour additive and a different type of the aerosolgenerating article is free of flavour additives.

14. The aerosol-generating system of any of claims 10 to 13, wherein one type of the aerosol-generating article comprises botanicals and a different type of the aerosolgenerating article is free of botanicals.

15. A method for controlling operation of an aerosol-generating device, preferably according to any of claims 1 to 9, the method comprising: - detecting, by the article detector, a type of aerosol-generating article received in the cavity, and