WO2025252874A1

WO2025252874A1 - Aerosol-generating device comprising an airflow altering component

Info

Publication number: WO2025252874A1
Application number: PCT/EP2025/065617
Authority: WO
Inventors: Catalin Marian CHISCOP
Original assignee: Philip Morris Products SA
Current assignee: Philip Morris Products SA
Priority date: 2024-06-07
Filing date: 2025-06-05
Publication date: 2025-12-11
Anticipated expiration: 2026-12-07

Abstract

The invention relates to an aerosol-generating device comprising a housing, an aerosolization unit and a cavity for at least partially receiving an aerosol-generating article. The housing comprises an airflow altering component with an air inlet and an air outlet, wherein the airflow altering component is configured to host an airflow altering element configured to release an additive to an airflow guided through the airflow altering component to obtain an altered airflow, and wherein the altered airflow is guided to the aerosolization unit.

Description

Philip Morris Products S.A.

-1-

AEROSOL-GENERATING DEVICE COMPRISING AN AIRFLOW ALTERING COMPONENT

The present invention relates to an aerosol-generating device with an airflow altering component comprising an airflow altering element, an aerosol-generating system comprising such device, and a method for generating an aerosol in such aerosol-generating system.

It is known to provide an aerosol-generating device for generating an inhalable vapor. Such devices may heat an aerosol-forming substrate of an aerosol-generating article to a temperature at which one or more components of the aerosol-forming substrate are volatilised without burning the aerosol-forming substrate. For volatilizing the aerosol-forming substrate, a heating element may be provided. The inhalable vapor may be delivered to a consumer through an airflow channel. The aerosol-generating device may comprise an airflow altering element to deliver an additive, for example a flavor, to a consumer.

An aerosol altering compound is usually incorporated into the aerosol-generating article. However, there is risk that during the usually heat-intensive production of the aerosolgenerating article the aerosol altering compound is lost by evaporation from the article. This may further lead to a degree of variation of the delivered additives between different production batches of aerosol-generating articles. Furthermore, there is a risk that the additive is degraded during production of the aerosol-generating article. In addition, the consumer is limited in the choice to the predefined additive of the consumable.

It would be desirable to have an aerosol-generating device in which at least some of the additive is not part of the consumable. It would be desirable to have an aerosol-generating device in which the airflow altering component allows customization of the user experience. It would be desirable to have an aerosol-generating device in which the delivered additive can be flexibly and easily adjusted. It would be desirable to provide an aerosol-generating device which provides an enriched sensory experience. It would be desirable to have an aerosolgenerating device which provides a cost-effective consumption experience to the consumer. It would be desirable to have an aerosol-generating device which enables an improved production of the flavor-containing component.

According to an embodiment of the invention there is provided an aerosol-generating device. The aerosol-generating device may comprise a housing. The aerosol-generating device may comprise an aerosolization unit. The aerosol-generating device may comprise a cavity for at least partially receiving an aerosol-generating article. The housing may comprise an airflow altering component with an air inlet and an air outlet. The airflow altering component may be configured to host an airflow altering element. The airflow altering component may be configured to release an additive to an airflow guided through the airflow altering component to obtain an altered airflow. The altered airflow may be guided to the aerosolization unit.

The aerosol-generating device comprises a housing, an aerosolization unit and a cavity for at least partially receiving an aerosol-generating article. The housing comprises an airflow altering component with an air inlet and an air outlet. The airflow altering component is configured to host an airflow altering element configured to release an additive to an airflow guided through the airflow altering component to obtain an altered airflow. The altered airflow is guided to the aerosolization unit.

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. An aerosol-generating device may be a holder. The device may be an electrically heated device. The aerosol-generating device may comprise a housing, electric circuitry, a power supply, a heating chamber and a heating element. The aerosol-generating device may be cylindrically-shaped.

The aerosol-generating device may be 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.

The aerosol-generating device may comprise electric circuitry. The electric circuitry may comprise a microprocessor, which may be a programmable microprocessor. The microprocessor may be part of a controller. The electric circuitry may comprise further electronic components. The electric circuitry may be configured to regulate a supply of power to the heating element. Power may be supplied to the heating element continuously following activation of the aerosol-generating device or may be supplied intermittently, such as on a puff- by-puff basis. The power may be supplied to the heating element in the form of pulses of electrical current. The electric circuitry may be configured to monitor the electrical resistance of the heating element, and preferably to control the supply of power to the heating element dependent on the electrical resistance of the heating element.

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 battery, a Lithium-lron-Phosphate battery, Lithium Titanate battery, 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 aerosol-generating device may comprise a cavity. The cavity of the aerosolgenerating device may be configured to at least partially receive the aerosol-generating article. The cavity of the aerosol-generating device may have an open end into which the aerosolgenerating 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 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 of the aerosol-generating device 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.

At least a portion of the airflow channel may run through the cavity of the aerosolgenerating device. Ambient air may be drawn into the aerosol-generating device at least partly through the airflow altering component 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.

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

The aerosol-generating system may comprise a proximal end through which in use an aerosol exits the aerosol-generating system. The aerosol-generating system comprises a distal end opposed to the proximal 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 end and the distal end of the aerosol-generating system. The "aerosolization unit" is provided to aerosolize an aerosol-forming substrate to form an aerosol. The aerosolization unit may comprise a heating element, such as resistive or an inductive heating element. Generally, the aerosolization unit may be configured as any unit which is able to aerosolize the aerosol-forming substrate.

The "air inlet" refers to a designated opening or passage within the aerosol-generating device's housing, preferably within the airflow altering component. The air inlet is configured to allow external air to enter the device, where it may then be directed through the airflow altering element. Once inside the airflow altering component, the incoming air mixes with the additive released by the airflow altering element, resulting in the formation of an "altered airflow." This airflow, now infused with the additive or the additives, is then guided to the aerosolization unit via the air outlet for further processing or dispersion, ultimately contributing to the production of the desired aerosol for inhalation by the user.

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 "airflow altering component" refers to a part or module of an aerosol-generating device that may modify or enhance the properties of the airflow passing through it. This component comprises features such as an air inlet, an air outlet, and an airflow altering element. The airflow altering element, which may consist of various materials or substances, is configured to release additives or modify the composition of the airflow passing through the component. This modification process results in the creation of an "altered airflow" with specific characteristics tailored to the user's preferences or requirements. The altered airflow is then directed to the aerosolization unit for further processing, such as vaporization or atomization, to generate the final aerosol product for inhalation.

The "airflow altering element" is a component within the aerosol-generating device configured to modify the properties of airflow passing through it. This element may consist of various materials or substances specifically chosen to achieve desired effects, such as flavor enhancement, or the addition of other additives. For example, the airflow altering element may contain flavouring agents, nicotine solutions, or other compounds intended to alter the composition or characteristics of the airflow. When airflow passes through the airflow altering element, it interacts with these substances, resulting in the generation of an aerosol with specific properties, such as flavor, nicotine content, or other desired attributes. Overall, the airflow altering element allows customizing the aerosol generated by the device to meet the preferences of the user.

The additives released by the airflow altering element may enrich the sensory experience of a consumer. The additives released by the airflow altering element may provide the consumer with an additional experience to the experience of consuming the aerosol released from the substrate.

The airflow altering element gives the consumer the opportunity to obtain a further consumption experience.

The expression “altered airflow” as used herein, refers to an airflow after it is guided through the airflow altering component. An “altered airflow” comprises specific components that are released by an airflow altering element comprised in the airflow altering component. For example, this process may result in the altered airflow carrying the aromatic compounds of the additives, thus imparting a further taste or aroma to the inhalable aerosol.

This altered airflow, enriched with the chosen additive or additives, is then directed towards the aerosolization unit in which an aerosol is formed for inhalation by a user.

The airflow altering component may be removably mounted at the housing of the aerosol-generating device.

The incorporation of a removable airflow altering component into the housing of the aerosol-generating device offers a practical advantage in facilitating straightforward flavor customization. This feature grants, for example, the user the convenience of easily swapping between different flavor options to suit their individual preferences. Moreover, the simplified process of replacing or refilling the airflow altering component enhances user convenience and operational efficiency. In essence, the inclusion of a removable airflow altering component enhances the device's versatility, providing users with a user-friendly experience. As the airflow altering element may be configured to be removably mounted at the housing, the airflow altering element may be easily exchanged. The user may easily install a new airflow altering element, for example, when a previous airflow altering element has been fully or partially consumed. The airflow altering element may enable the consumer to adjust the consumption experience delivered by the aerosol-generating system to the consumer’s preferences. The consumer may exchange the airflow altering element if a different consumption experience is desired. As the airflow altering element is configured to be removably mounted at the housing, the airflow altering element may be used with different types of aerosol-generating devices. As the airflow altering element is configured to be removably mounted at the housing, the airflow altering element may be used with different types of existing aerosol-generating devices without modifying or without substantially modifying such existing devices. The airflow altering element may enable versatile use.

The airflow altering component may define an inner volume in which the airflow altering element is provided. Defining an inner volume within the airflow altering component of the aerosol-generating device ensures precise containment of the airflow altering element.

The airflow altering element may comprise an adsorbent material that is loaded with an airflow altering additive. The adsorbent material may be configured to gradually release the airflow altering additive. The adsorbent material may be made of one or more of a paper material, preferably paper foam, sponge like material, a porous material such as ceramic, cotton, cotton based wicking elements and porous polymer. The adsorbent materials made of paper may improve sustainability of the aerosol-generating system.

The adsorbent material may be made from a paper material comprising a liquid- impermeable layer. The adsorbent material made from a paper material may be in contact with the housing of the aerosol-generating device when mounted at the housing of the aerosolgenerating device.

The airflow altering additive may be a volatile chemical agent generating a scent. The airflow altering additive may be a natural oil. The airflow altering additive may comprise one or more of clove, eucalyptus, ginger, Chinese star anise and rosemary plant material. The airflow altering agent may be a liquid.

The adsorbent material may be porous body infused with a natural oil. The adsorbent material may be polymer loaded with a volatile chemical agent to emanate and generate a scent.

The airflow altering additive may at least partially volatize to alter the airflow. The airflow altering additive may at least partially volatize without energy input from a heating element. The airflow altering additive may at least partially volatize with the help of energy input from a heating element. The airflow altering additive may at least partially volatize at ambient temperature. The airflow altering additive may volatize at a temperature of below about 50 degrees Celsius, preferably of below about 45 degrees Celsius, more preferably of below about 42 degrees Celsius.

"Adsorbent material" refers to a substance, such as cotton or sponge-like material, that is used within the airflow altering component of the aerosol-generating device to capture and release additives. This material holds the airflow altering additives and gradually releases them into the airflow, ensuring a consistent and enhanced flavor delivery to the user.

Incorporating an adsorbent material, such as cotton or sponge-like material, as the airflow altering element within the aerosol-generating device may enhance additive release and retaining efficiency. The adsorbent material is configured to effectively capture and retain additives, allowing for controlled and prolonged additive release during aerosolization. This configuration supports a more consistent and long-lasting flavor experience for users. Additionally, the use of such materials promotes cost-effectiveness and sustainability, as they can be easily refilled or replaced as needed, prolonging the lifespan of the device.

The airflow altering component may be configured to be adjustable to assume at least an open position, in which an airflow through the inner volume of the airflow altering component is permitted, and to assume a closed position in which an airflow through the inner volume of the airflow altering component is blocked.

By configuring the airflow altering component to be adjustable, capable of assuming both at least one open and a closed position, the aerosol-generating device allows increased control over airflow through the inner volume. This adjustability optimizes additive delivery by allowing users to regulate the intensity of additive dispersion during aerosolization.

This feature enhances user customization and flexibility, promoting a more tailored vaping experience. Users have the ability to fine-tune the airflow through the inner volume, thereby controlling the concentration and strength of additive released. Such control allows that users may achieve their desired flavor intensity.

Furthermore, the capability of the airflow altering component to assume a closed position provides added benefits. When the airflow is blocked in the closed position, it conserves additives like flavoring agents, prolonging the lifespan of the device and contributing to cost-effectiveness. This not only reduces the frequency of airflow altering element replacements but also promotes sustainability by minimizing wastage of flavoring materials.

In summary, the adjustability of the airflow altering component offers both technical advantages, such as optimized flavor delivery, and practical benefits, including enhanced user control, cost-effectiveness, and sustainability.

The airflow altering component may be configured to be ring shaped.

“Ring-shaped" refers to a at least partly circular or annular configuration of a component, such as the airflow altering component, within the aerosol-generating device. This configuration facilitates even distribution and flow of air or other substances through the inner volume of the component.

Configuring the airflow altering component to be ring-shaped enhances both its functionality and user experience. Additionally, the ring-shaped configuration promotes efficient utilization of the airflow altering element, maximizing additive release during aerosolization. Moreover, the structural integrity and stability provided by the ring-shaped design contribute to the device's durability and longevity, reducing maintenance requirements.

The air inlet may be arranged at an outer annular wall of the airflow altering component and wherein the air outlet is arranged at an inner annular wall of the airflow altering component.

"Outer annular wall" refers to the external circular boundary of a ring-shaped component, such as the airflow altering component in the aerosol-generating device. This wall forms the outermost edge and provides structural support and containment for the inner components, while also potentially housing features like recesses or inlets for airflow management.

The positioning of the air inlet at the outer annular wall and the air outlet at the inner annular wall of the airflow altering component provides an airflow configuration to the aerosolgenerating device, enhancing both its functionality and efficiency. This configuration optimizes airflow dynamics, promoting efficient circulation of air and additives within the device for consistent flavor delivery to the user.

The ring-shaped airflow altering component may comprise a hosting ring and a closing ring. The hosting ring and the closing ring may be configured to be rotatably attached to each other.

"Hosting ring" refers to a component within airflow altering component that serves as a housing or support structure for other elements, such as the airflow altering element. This at least partly ring-shaped part may provide a secure mounting platform for these elements and may include features like recesses or protrusions to facilitate their attachment and alignment within the device.

The "closing ring" is a component within the airflow altering component that is used to enclose or seal off certain sections or components of the hosting ring. This ring-shaped part may also serve to secure and hold other components in place, such as airflow altering elements or cartridges, and may be movable or rotatable to adjust airflow or access to the device.

"Rotatably attached to each other" refers to the manner in which two components, such as the hosting ring and the closing ring, are joined together in such a way that they may rotate relative to each other. This rotational attachment allows for flexibility in the positioning or alignment of the components, enabling adjustments to airflow, additive delivery, or other aspects of the device's functionality.

The configuration of the ring-shaped airflow altering component with a hosting ring and a closing ring, rotatably attached to each other, provides a versatile and user-friendly configuration to the aerosol-generating device. This arrangement facilitates precise control over the inlet, outlet, and inner volume of the airflow altering component, enhancing both functionality and ease of use.

By employing a hosting ring and a closing ring that are rotatably attached, the airflow altering component allows users to adjust the configuration to define the inlet, outlet, and inner volume according to their preferences. This customizable configuration promotes flexibility in flavor delivery, airflow control, and overall vaping experience. Additionally, the rotatable attachment mechanism simplifies assembly and maintenance processes, enabling users to easily disassemble and clean the airflow altering component as needed.

Moreover, the collaboration between the hosting ring and the closing ring ensures a secure and leak-proof seal, preventing flavor leakage and maintaining the integrity of the device. This contributes to prolong the lifespan of the device. Furthermore, the modular nature of the airflow altering component enhances versatility and compatibility with different aerosolgenerating devices, expanding its applicability across various vaping platforms.

The hosting ring may comprise coupling means configured to facilitate mounting of the airflow altering component to the housing of the aerosol-generating device.

“Coupling means" refers to the mechanisms or structures within the aerosol-generating device that facilitate the attachment, connection, or coupling of different components or parts together. These means may include various features such as grooves, slots, threads, clasps, or other fastening elements that allow components to be securely joined or assembled within the device, enabling proper functionality and operation.

Incorporating coupling means within the hosting ring of the airflow altering component streamlines the mounting process, enhancing the ease and efficiency of attaching the airflow altering component to the housing of the aerosol-generating device.

The presence of coupling means within the hosting ring simplifies the mounting procedure for the airflow altering component onto the housing. This ensures a secure and stable attachment, minimizing the risk of detachment or misalignment during use.

Moreover, the coupling means enhance versatility by accommodating different mounting mechanisms or attachment points on the device housing. This promotes compatibility with various aerosol-generating devices, allowing the airflow altering component to be easily integrated into different device designs without requiring extensive modifications. Additionally, the coupling means contribute to the overall durability and reliability of the device by providing robust support for the airflow altering component. This helps maintain consistent additive delivery and prevents performance issues related to loose or unstable connections.

The hosting ring and the closing ring each may comprise an inner annular wall. The hosting ring and the closing ring each may comprise an outer annular wall. The inclusion of inner and outer annular walls in both the hosting ring and the closing ring enhances the structural integrity and functionality of the ring-shaped airflow altering component in the aerosol-generating device. This configuration feature ensures robustness and stability while facilitating precise control over airflow and additive dispersion.

By incorporating inner and outer annular walls in both the hosting ring and the closing ring, the airflow altering component achieves enhanced structural integrity and stability. This design ensures that the component maintains its shape and form under various operating conditions, preventing deformation or damage during use.

Furthermore, the inner and outer annular walls provide additional support for the airflow altering component, enhancing its durability and longevity. This helps to prolong the lifespan of the device and reduces the need for frequent replacements.

Additionally, the presence of inner and outer annular walls in both rings facilitates precise control over airflow and additive dispersion within the device. This allows for optimized performance and consistency in additive delivery.

The hosting ring may comprise at least one first recess in the outer annular wall. The hosting ring may comprise at least one second recess in the inner annular wall.

Incorporating at least one recess in at least one of the outer and inner annular walls of the hosting ring enhances the versatility and functionality of the ring-shaped airflow altering component in the aerosol-generating device. This configuration feature facilitates precise alignment and secure attachment of the airflow altering component within the device housing.

The presence of recesses in both the outer and inner annular walls of the hosting ring enables precise alignment of the airflow altering component during assembly, ensuring proper positioning within the device housing. This promotes efficient airflow and flavor dispersion.

Moreover, the recesses provide additional stability and support for the airflow altering component, preventing shifting or movement during operation. This helps maintain consistent performance and additive delivery, reducing the risk of performance issues or flavor inconsistencies.

The closing ring may comprise at least one first recess in the outer annular wall. The closing ring may comprise at least one second recess in the inner annular wall. Incorporating at least one recess in at least one of the outer and inner annular walls of the closing ring enhances the versatility and functionality of the ring-shaped airflow altering component in the aerosol-generating device. This configuration feature facilitates precise alignment and secure attachment of the closing ring within the device housing.

The presence of recesses in both the outer and inner annular walls of the closing ring enables precise alignment of the closing ring during assembly, ensuring proper positioning within the device housing. This promotes efficient airflow and flavor dispersion.

The closing ring may be configured to be rotatable with respect to the hosting ring. The closing ring may further be configured to be movable between an open position and a closed position. In this context, "rotatable" refers to the capability of the closing ring to rotate around its axis relative to the hosting ring. This rotational movement allows the closing ring to change its orientation or position with respect to the hosting ring. Additionally, the closing ring is configured to be movable between at least one "open position" and a "closed position." In the open position, the closing ring is positioned to allow airflow or other substances to pass through the device, while in the closed position, it obstructs or blocks the passage, controlling the flow or preventing leakage. This movability enables users to adjust the device according to their preferences or operational requirements, enhancing its versatility and functionality.

Enabling the closing ring to be rotatable with respect to the hosting ring and movable between at least an open and a closed position enhances the versatility and functionality of the ring-shaped airflow altering component in the aerosol-generating device. This configuration offers precise control over airflow and flavor dispersion, allowing users to customize their experience according to their preferences.

The ability for the closing ring to be rotatable with respect to the hosting ring and movable between an open and closed position provides several advantages. Firstly, it allows users to adjust the airflow and flavor delivery within the device by controlling the opening and closing of the ring. In the at least one open position, the airflow and flavor dispersion may be increased. In contrast, the closed position restricts airflow and additive dispersion.

Moreover, the rotatable and movable configuration of the closing ring enhances user convenience and usability. Users may easily adjust the ring to their desired position with a simple twist or movement, without requiring additional tools or complicated procedures. This promotes a more intuitive and user-friendly experience.

Additionally, the ability to control airflow and flavor dispersion through the closing ring enhances the device's versatility and adaptability to different preferences.

In the open position the first and second recesses in the inner and outer annular wall of the closing ring may at least partly overlap with the first and second recesses in the inner and outer annular wall of the hosting ring, such that an airflow through the inner volume of the airflow altering component is permitted.

"Overlap" refers to the partial alignment or coincidence of recesses in the inner and outer annular walls of the closing ring with those in the hosting ring when the closing ring is in the open position. This alignment allows the recesses in the closing ring to partially cover or coincide with the corresponding recesses in the hosting ring, creating passages or channels that permit airflow through the inner volume of the airflow altering component. By overlapping in this manner, the recesses ensure that air can flow freely through the airflow altering component, facilitating the dispersion of aerosol altering compounds.

Aligning the recesses of the closing ring with those of the hosting ring in the at least one open position enables at least partly unrestricted airflow through the inner volume of the airflow altering component, optimizing additive dispersion.

When the closing ring is in the open position, and the recesses of both the closing ring and the hosting ring partly overlap, it allows for unrestricted airflow through the inner volume of the airflow altering component. This alignment ensures that air can freely pass through the airflow altering component, facilitating efficient mixing of air with additives and promoting uniform additive dispersion throughout the aerosol.

Moreover, the overlap of recesses in the open position enhances the device's performance by minimizing airflow restrictions and pressure drops. This results in smoother airflow and more consistent flavor delivery.

Additionally, the alignment of recesses in the open position simplifies the assembly and disassembly of the airflow altering component. Users can easily align the recesses of the closing ring with those of the hosting ring, ensuring proper positioning and secure attachment of the component within the device housing.

Furthermore, this configuration enhances the device's reliability and durability by reducing the risk of airflow obstructions or leaks. By ensuring consistent and efficient airflow, it helps maintain optimal performance and flavor quality over time, prolonging the lifespan of the device.

In the closed position the first recess and second recess in the inner annular wall and outer annular wall of the closing ring, may be laterally offset with respect to the first recess and second recess in the inner annular wall and outer annular wall of the hosting ring, such that an airflow through the inner volume of the airflow altering component is blocked.

"Laterally offset" refers to a condition where two objects or components are positioned sideways with respect to each other, such that they are not directly aligned or in the same plane. In the context of the aerosol-generating device, when the closing ring is in the closed position, the first recess and second recess in the inner and outer annular walls of the closing ring may be laterally offset from the corresponding recesses in the hosting ring. This means that the recesses in the closing ring are not directly aligned or overlapping with those in the hosting ring, resulting in a blocked or obstructed airflow through the inner volume of the airflow altering component.

When the closing ring is in the closed position, the lateral offset of the recesses with respect to those of the hosting ring obstructs airflow through the inner volume of the airflow altering component, effectively controlling flavor dispersion and airflow within the device. This ensures versatility in additive customization.

In the closed position, the lateral offset of the recesses in the closing ring relative to those in the hosting ring may effectively block airflow through the inner volume of the airflow altering component. This obstruction restricts the passage of air, controlling the intensity and distribution of flavor within the aerosol.

Moreover, the lateral offset of recesses in the closed position offers practical benefits in user convenience and customization. Users can easily switch between open and closed positions to adjust the flavor intensity according to their preferences. This flexibility allows users to tailor their vaping experience to suit their taste preferences.

Furthermore, this configuration enhances the device's reliability and performance consistency by providing precise control over flavor dispersion and airflow. By blocking airflow in the closed position, it ensures consistent flavor delivery and prevents flavor inconsistencies.

A plurality of corresponding first recess and second recess may be provided in each of the inner annular wall and outer annular wall of the closing ring and the hosting ring, to define a plurality of air inlets and air outlets of the airflow altering component.

This enhances airflow control and additive dispersion, allowing for customizable experiences tailored to user preferences.

By incorporating multiple corresponding recesses in both the inner and outer annular walls of both the closing ring and the hosting ring, the airflow altering component may offer enhanced versatility in airflow management and flavor distribution. These recesses may define multiple air inlets and outlets within the component, enabling precise control over airflow pathways and flavor dispersion.

This allows users to customize their experience by selectively adjusting the openings and closures of the inlets and outlets. For example, users can open specific inlets to enhance flavor intensity or close certain outlets to reduce airflow.

Additionally, the availability of multiple air inlets and air outlets within the airflow altering component enhances flavor consistency and distribution throughout the aerosol. By allowing for more controlled airflow and flavor dispersion, this feature ensures a more uniform flavor experience with fewer additive inconsistencies.

At least one of the hosting ring and the closing ring may comprise at least one protrusion. The protrusion may be configured to secure the airflow altering element within the inner volume of the airflow altering component.

In the context of the aerosol-generating device, a "protrusion" refers to a raised or extending feature on a component's surface, typically in the form of a small bump, ridge, or projection. These protrusions may be configured to interact with corresponding features on other components, such as recesses or indentations, to facilitate alignment, attachment, or locking mechanisms.

Incorporating protrusions within at least one of the hosting ring and the closing ring to secure the airflow altering element within the inner volume of the airflow altering component may enhance the stability and integrity of the component. This may ensure that the airflow altering element remains securely in place during operation, preventing displacement or loss and promoting consistent flavor delivery.

By including protrusions within at least one of the hosting ring and the closing ring, the airflow altering component may offer improved security and stability for the airflow altering element within the inner volume. These protrusions may act as anchors, securing the airflow altering element in place and preventing it from shifting or moving during operation, even under turbulent airflow conditions.

This may enhance the overall reliability and performance consistency of the device by ensuring that the airflow altering element remains properly positioned within the component.

Moreover, the presence of protrusions within at least one of the hosting ring and the closing ring may simplify the assembly and disassembly process of the airflow altering component. Users may easily insert or remove the airflow altering element from the inner volume without requiring additional tools or complicated procedures.

Additionally, the inclusion of protrusions enhances the durability and longevity of the airflow altering component by reducing the risk of damage or wear to the airflow altering element. By securely holding the airflow altering element in place, these protrusions help prevent premature degradation or loss of flavor, prolonging the lifespan of the device and reducing the need for frequent replacements.

In summary, the inclusion of protrusions within at least one of the hosting ring and the closing ring may offer technical advantages in airflow altering element security and stability, while also providing practical benefits in performance consistency, user convenience, durability, and adaptability. The airflow altering component may be mounted to the proximal end of the cavity of the aerosol-generating device. The aerosol-generating device and the aerosol-generating article of the aerosol-generating system may comprise two ends: a proximal end through which aerosol exits the component and is delivered to a user and a distal end. In use, a user may draw on the proximal end of the aerosol-generating device or the aerosol-generating article in order to inhale aerosol generated by the aerosol-generating article.

Mounting the airflow altering component to the proximal end of the cavity of the aerosolgenerating device enhances the efficiency and effectiveness of flavor delivery. This positioning ensures that the airflow altering component may be strategically located to maximize flavor dispersion and airflow dynamics within the device.

Moreover, placing the airflow altering component at the proximal end of the cavity optimizes airflow dynamics within the device, and may promote efficient mixing of air with additives. This may ensure uniform flavor dispersion throughout the aerosol, minimizing flavor inconsistencies and enhancing overall flavor quality.

Additionally, the proximal positioning of the airflow altering component facilitates ease of access and operation for users. Users can conveniently refill or replace the airflow altering component without having to disassemble the entire device, saving time and effort during maintenance.

A plurality of airflow altering components may be mounted, preferably in a stacked manner, to the proximal end of the cavity of the aerosol-generating device. Mounting multiple airflow altering components, preferably in a stacked manner, to the proximal end of the cavity of the aerosol-generating device may enhance additive versatility and user customization options. This configuration may allow users to enjoy a wider range of flavors or mix flavors to create unique combinations. By mounting multiple airflow altering components in a stacked manner at the proximal end of the cavity, the device offers enhanced additive variety and flexibility for users. Users may choose from a selection of different flavors or mix and match flavors to create customized blends, catering to their individual preferences.

Moreover, stacking the airflow altering components may allow for efficient use of space within the device, maximizing the number of flavors that can be accommodated while maintaining a compact form factor. This may ensure that users have access to a diverse range of flavors without compromising the device's portability or usability.

Additionally, the stacked configuration may facilitate ease of access and operation for users. Users may conveniently switch between different airflow altering components or refill individual components as needed, without having to disassemble the entire device.

The intermediate positions between fully open and closed configurations of the airflow altering component may serve a dual purpose in the aerosol-generating device. Firstly, they enable users to regulate the intensity of additive delivery. By adjusting the component to partially open positions, users may modulate the airflow and thereby fine-tune the amount of flavor released into the aerosol. This feature allows for a customizable and tailored sensory experience according to individual preferences.

Moreover, when multiple flavor components are stacked within the device, these intermediate positions may facilitate mixing of additives. By controlling the degree of openness for each component, users may achieve desired combinations and proportions of flavors. This capability may enhance the versatility of the device, offering users the opportunity to create unique flavor profiles and experiment with different taste sensations. Thus, the adjustable positions between open and closed configurations not only may regulate flavor intensity but also enable flavor mixing.

In summary, mounting multiple airflow altering components, preferably in a stacked manner, to the proximal end of the cavity offers technical advantages in flavor versatility and efficiency, while also providing practical benefits in user customization, convenience, and flavor delivery.

Each airflow altering component of the plurality of airflow altering components may comprise an airflow altering element, and wherein preferably each airflow altering element is configured to release a different additive or flavor.

Incorporating a unique airflow altering element in each airflow altering component allows for a diverse range of additive and flavor options within the aerosol-generating device. This configuration enhances variety and customization.

One or more of the airflow altering elements may be configured to be replaceable or refillable.

Allowing one or more airflow altering elements to be replaceable or refillable may enhance the convenience and flexibility of the aerosol-generating device. This feature may enable users to easily switch between flavors or refill their favourite flavors without the need to purchase entirely new components, reducing waste and cost.

By offering replaceable or refillable airflow altering elements, the device may provide users with greater control over their experience. Users may conveniently swap out depleted airflow altering elements for fresh ones, ensuring a continuous supply without interruption.

Moreover, the replaceable or refillable nature of the airflow altering elements may promote sustainability by reducing environmental impact. Users can minimize waste by reusing airflow altering components and only replacing the airflow altering elements when necessary. In summary, providing replaceable or refillable airflow altering elements offers technical advantages in convenience, sustainability, and user engagement, while also providing practical benefits in cost-effectiveness.

The altered airflow which is released from the outlet of the airflow altering component may be guided to a bottom of the cavity and so further guided to a distal end of an aerosolgenerating article received in the cavity.

Guiding the altered airflow from the outlet of the airflow altering component to the bottom of the cavity and further to the distal end of an aerosol-generating article may enhances additive dispersion and airflow dynamics within the device. This configuration may ensure uniform flavor distribution and efficient delivery to the user.

By guiding the altered airflow from the outlet of the airflow altering component to the bottom of the cavity and then to the distal end of the aerosol-generating article, the device may ensure thorough mixing of air with additive compounds throughout the aerosol. This promotes consistent flavor delivery.

Additionally, guiding the altered airflow in this manner may help prevent additive loss or dispersion within the device. This enhances additive consistency and reduces the risk of additive inconsistencies or degradation over time.

Guiding the altered airflow from the airflow altering component outlet to the bottom of the cavity and further to the distal end of the aerosol-generating article may offer technical advantages in flavor dispersion and airflow optimization, while also providing practical benefits in flavor consistency, and efficiency.

The altered airflow is guided to the bottom of the cavity via a gap between the cavity and the aerosol-generating article.

Guiding the altered airflow to the bottom of the cavity via a gap between the cavity and the aerosol-generating article may enhance airflow dynamics and flavor dispersion within the device. This configuration may promote efficient mixing of air with flavor compounds, ensuring uniform flavor delivery.

By directing the altered airflow through a gap between the cavity and the aerosolgenerating article to the bottom of the cavity, the device may optimize airflow pathways and promotes thorough mixing of air with flavor compounds. Additionally, directing the altered airflow through a gap between the cavity and the aerosol-generating article increases additive delivery efficiency and minimizes wastage.

The invention also relates to an aerosol-generating system comprising an aerosolgenerating device as described herein and an aerosol-generating article. The aerosolgenerating device may include a housing, an aerosolization unit, and a cavity configured to at least partially receive the aerosol-generating article. The housing may comprise an airflow altering component that features an air inlet and an air outlet. This airflow altering component may be configured to host an airflow altering element, which releases an additive into the airflow passing through it, thereby creating an altered airflow.

This altered airflow may be directed from the air outlet of the airflow altering component to the bottom of the cavity and may further be guided to the distal end of the aerosol-generating article positioned within the cavity. This design ensures that the additive is effectively delivered into the aerosol-generating article.

The invention also relates to method for generating an aerosol, preferably by using an aerosol-generating device as described herein.

A use for generating an aerosol in an aerosol-generating system involves utilizing an aerosol-generating device and an aerosol-generating article. The aerosol-generating device comprises a housing, an aerosolization unit, and a cavity that at least partially receives the aerosol-generating article. The housing includes an airflow altering component with an air inlet and an air outlet. This component may host an airflow altering element configured to release an additive into the airflow as it passes through the component, thereby creating an altered airflow.

In the practical application of a method for the use of the aerosol-generating system, the interaction may involve the utilization of both the aerosol-generating device and an aerosolgenerating article. The gist of the method is that the airflow is altered, preferably flavored, before the aerosol generation takes place. To this end, the airflow is first guided through an airflow altering component to obtain an altered airflow. The altered airflow generated by the airflow altering component may be purposely channelled to the cavity of the device. The altered airflow may be further directed towards the aerosolization unit to generate an inhalable aerosol.

A beneficial aspect of this sequential process is that the airflow undergoes alteration before the aerosol generation takes place in a second step. By first altering, for example flavorizing, the air before the aerosolization, the aerosol-generating device may ensure that the user receives a tailored aerosol delivery. This process may add a layer of customization and personalization to the aerosol experience. Since the airflow altering component is separate from the consumable, and since airflow alteration takes place before the aerosolization, less limitations in the choice of useable airflow altering additives may apply.

In conclusion, this system's functionality may improve its capability to efficiently modify and deliver aerosols through a systematic flow process.

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 a cross-sectional view of an aerosol-generating device of the invention comprising an airflow altering component;

Fig. 2 shows a closing ring and a hosting ring;

Fig. 3 shows a closing ring and a hosting ring similar to those of Fig. 2;

Fig. 4 shows a hosting ring similar to those of Fig. 2 and 3.

Fig. 1 illustrates a detailed cross-sectional view of an aerosol-generating device 10, which comprises several key components: a housing 12, an aerosolization unit 14, and a cavity 16 that is configured to at least partially receive an aerosol-generating article 18. The housing 12 comprises an airflow altering component in form of a flavouring component 20 that plays a crucial role in modifying the properties of the airflow within the device. The flavouring component 20 comprises an air inlet 28 and an air outlet 30, which allow ambient air to be guided through the flavouring component 20

The flavouring component 20 is specifically configured to host an aerosol altering element 22 in form of a flavor element 22. This element 22 is configured to release a flavor into the airflow 24 as it passes through the flavouring component 20, resulting in an "altered airflow" or an “flavoured airflow 26”. The flavoured airflow 26 is then guided to the aerosolization unit 14, where the altered airflow entrains particles released from the aerosolforming substrate of the aerosol-generating article 18 to generate an inhalable aerosol.

One of the features of the flavouring component 20 shown in Fig.1 is its removable mounting on the housing 12. This configuration allows for easy replacement, refilling, or cleaning of the flavouring component 20, enhancing the convenience and usability of the device. The inner volume of the flavouring component 20 houses the flavor element 22, which is made from an adsorbent material such as cotton or sponge-like material. This material is chosen for its ability to efficiently release flavor or other additives into the airflow, thereby enriching the user's sensory experience.

The flavouring component 20 is configured to be adjustable, offering at least two positions: an open position and a closed position. In the open position, airflow 24, 26 is permitted through the inner volume of the flavouring component 20, allowing for the release and mixing of the flavor. In the closed position, the airflow 24, 26 is blocked, preventing the passage of air 24, 26 through the flavouring component 20. This adjustability provides users with control over the intensity and presence of the flavor in the airflow 24, 26.

Structurally, the flavouring component 20 is ring-shaped, enhancing its integration into the overall design of the device 10. The air inlet 28 is located on an outer annular wall of the flavouring component 20, while the air outlet 30 is positioned on an inner annular wall. This configuration ensures a streamlined and efficient flow of air 24, 26 through the flavouring component 20.

The ring-shaped flavouring component 20 comprises two primary parts: a hosting ring 32 and a closing ring 34 shown in detail in Fig. 2. These parts are configured to be rotatably attached to each other, allowing for the adjustment between the open and closed positions. The hosting ring 32 includes coupling means that facilitate its secure mounting to the housing of the aerosol-generating device 10. This configuration ensures that the flavor component can be easily aligned and securely fastened, providing a stable and reliable connection.

Overall, the integration of the flavouring component 20 at the housing 12 of the aerosolgenerating device 10 significantly enhances its functionality. By allowing for the introduction and control of additives within the airflow, this component 20 provides users with a customizable and enriched vaping experience. This configuration, featuring removable and adjustable elements, ensures that the device is both user-friendly and efficient, meeting the diverse needs of its users.

The flavoured airflow 26, released from the air outlet 30 of the flavouring component 20, is directed towards the bottom of the cavity 16. From there, it is further guided to the distal end of the aerosol-generating article 18 that is positioned within the cavity. This pathway ensures that the altered airflow effectively interacts with the aerosol-generating article, optimizing the delivery of the flavor to enhance the user experience.

Fig. 2A and 2B provide a detailed view of the structural interaction between the hosting ring 32, shown in Fig. 2A, and the closing ring 34, shown in Fig. 2B, within the aerosolgenerating device 10. Both the hosting ring 32 and the closing ring 34 are configured with an inner annular wall and an outer annular wall. Specifically, the hosting ring 32 comprises at least one first recess 36 in its outer annular wall 38 and at least one second recess 40 in its inner annular wall 42. These recesses 36, 40 play a crucial role in controlling the airflow 24, 26 through the device.

The closing ring 34 is configured to be rotatable relative to the hosting ring 32. This rotational capability allows the closing ring 34 to move between at least two positions: an open position and a closed position. In the open position, the first and second recesses 28, 46 in the inner and outer annular walls of the closing ring 34 at least partly overlap with the corresponding first and second recesses 36, 40 in the inner and outer annular walls 38, 42 of the hosting ring 32.

This overlapping arrangement creates a pathway that permits airflow 24 through the inner volume of the flavouring component 20, enabling the release of the flavor into the airflow 26. Conversely, in the closed position, the first and second recesses 28, 46 in the inner and outer annular walls 44, 48 of the closing ring 34 are laterally offset from the first and second recesses 36, 40 in the inner and outer annular walls 38, 42 of the hosting ring 32. This offset alignment effectively blocks the airflow 24 through the inner volume of the flavouring component 20, preventing any air from passing through and thereby controlling the release of the flavor.

To enhance functionality and provide greater control over the airflow 24, 26, a plurality of corresponding first and second recesses 28, 36, 40, 46 are incorporated into both the inner and outer annular walls 38, 42, 44, 48 of the closing ring 34 and the hosting ring 32. These multiple recesses define a series of air inlets and air outlets within the airflow altering component, allowing for precise adjustment and modulation of the airflow.

The flavouring component 20 is mounted to the proximal end of the cavity within the aerosol-generating device 10. This positioning ensures that the modified airflow 26, enriched with the flavor released by the flavor element 22, is effectively directed towards the aerosolization unit 14 for further processing. This arrangement not only optimizes the performance of the device but also enhances the user experience by providing a customizable and controlled delivery of flavors or other additives.

Fig. 3A and 3B illustrate the detailed configuration of the closing ring 34 shown in Fig. 3A, and its interaction with the hosting ring 32, shown in Fig. 3B. The closing ring 34 features at least one first recess 28 in its outer annular wall 44 and at least one second recess 46 in its inner annular wall 48. These recesses 28, 46 are integral to controlling the airflow through the flavouring component 20.

In the open position, the first and second recesses 28, 46 in the inner and outer annular walls 44, 48 of the closing ring 34 partially overlap with the corresponding first and second recesses 36, 40 in the inner and outer annular walls 38, 42 of the hosting ring 32. This overlapping arrangement creates a pathway that allows airflow through the inner volume of the flavouring component 20, enabling the release of the flavor into the airflow.

Conversely, in the closed position, the first and second recesses 28, 46 in the inner and outer annular walls 44, 48 of the closing ring 34 are laterally offset from the first and second recesses 36, 40 in the inner and outer annular walls 38, 42 of the hosting ring 32. This offset alignment effectively blocks the airflow 24 through the inner volume of the flavouring component 20, preventing any air from passing through and thereby controlling the release of the flavor.

This configuration allows for precise control over the airflow 24, 26 within the aerosolgenerating device 10, enhancing the functionality and user experience by enabling customizable delivery of flavors or other additives. Fig. 4 shows the hosting ring 32 comprising a multitude of protrusions 50 configured to secure the flavor element 22 within the inner volume of the flavouring component 20. This feature ensures that the flavor element 22 remains firmly in place, maintaining its optimal position for releasing additives into the airflow 26 as it passes through the flavouring component 20. The protrusions 50 act as stabilizing elements, preventing any movement or displacement of the flavor element 22 during operation, which is crucial for consistent and effective performance of the aerosol-generating device 10.

Claims

1. An aerosol-generating device comprising a housing, an aerosolization unit and a cavity for at least partially receiving an aerosol-generating article, wherein the housing comprises an airflow altering component with an air inlet and an air outlet, wherein the airflow altering component is configured to be ring shaped, wherein the air inlet is arranged at an outer annular wall of the airflow altering component, wherein the air outlet is arranged at an inner annular wall of the airflow altering component, wherein the airflow altering component is configured to host an airflow altering element configured to release an additive to an airflow guided through the airflow altering component to obtain an altered airflow, and wherein the altered airflow is guided to the aerosolization unit.

2. The aerosol-generating device according to according to claim 1 , wherein the airflow altering component is removably mounted at the housing of the aerosol-generating device.

3. The aerosol-generating device according to any one of the preceding claims, wherein the airflow altering component is configured to be adjustable to assume at least an open position, in which an airflow through the inner volume of the airflow altering component is permitted, and to assume a closed position in which an airflow through the inner volume of the airflow altering component is blocked.

4. The aerosol-generating device according to any one of the preceding claims, wherein the ring-shaped airflow altering component comprises a hosting ring and a closing ring, which are configured to be rotatably attached to each other.

5. The aerosol-generating device according to any one of the preceding claims, wherein the hosting ring and the closing ring each comprise an inner annular wall and an outer annular wall.

6. The aerosol-generating device according to any one of claims 4 or 5, wherein a plurality of corresponding first and second recesses are provided in each of the inner and outer annular wall of the closing ring and the hosting ring, to define a plurality of air inlets and air outlets of the airflow altering component.

7. The aerosol-generating device according to any one of claims 4 to 6, wherein at least one of the hosting ring and the closing ring comprise at least one protrusion configured to secure the airflow altering element within the inner volume of the airflow altering component.

8. The aerosol-generating device according to any one of the preceding claims, wherein a plurality of airflow altering components are mounted, preferably in a stacked manner, to the proximal end of the cavity of the aerosol-generating device.

9. The aerosol-generating device according claim 8, wherein each airflow altering component comprises an airflow altering element, and wherein preferably each airflow altering element is configured to release a different additive.

10. The aerosol-generating device according to any one of the preceding claims, wherein one or more of the airflow altering elements are configured to be replaceable or refillable.

11 . The aerosol-generating device according to any one of the preceding claims, wherein the altered airflow which is released from the air outlet of the airflow altering component is guided to a bottom of the cavity and so further guided to a distal end of an aerosol-generating article received in the cavity.

12. An aerosol-generating system comprising an aerosol-generating article and an aerosol-generating device in accordance with any one of the preceding claims.

13. Use of an aerosol-generating system according to claim 12 for generating an aerosol.