Aerosol-generating device with wand extraction function

Abstract

The invention relates to an aerosol-generating device comprising a heating module. The heating module is configured to receive a substrate rod comprising an aerosol-forming substrate. The aerosol-generating device further comprises a movable insertion element and an axially movable extraction element. The insertion element and the extraction element are mechanically coupled such that the insertion element and the extraction element are movable together between an open position and a closed position. The insert element is configured to push the substrate rod in a distal direction into the heating module when moved from the open position to the closed position. The extraction element is configured to push the substrate rod out of the heating module in a proximal direction when moved from the closed position to the open position. The invention also relates to an aerosol-generating system.

Description

[0001] The present invention relates to an aerosol-generating device and to an aerosol-generating system.

[0002] It is known to provide an aerosol-generating device for generating an inhalable vapour. Such devices can heat an aerosol-forming substrate to a temperature at which one or more components of the aerosol-forming substrate volatilise without combusting the aerosol-forming substrate. The aerosol-forming substrate can be provided as part of a substrate rod. The substrate rod can have a rod shape for insertion of the substrate rod into a cavity, such as a heating chamber, of the aerosol-generating device. A heating element can be arranged in or around the heating chamber so as to heat the aerosol-forming substrate once the aerosol-generating article is inserted into the heating chamber of the aerosol-generating device.

[0003] It is desirable to have an aerosol-generating device which improves insertion of a substrate rod into the aerosol-generating device. It is desirable to have an aerosol-generating device which improves removal of a substrate rod from the aerosol-generating device.

[0004] According to embodiments of the present invention, there is provided an aerosol-generating device which can comprise a heating module. The heating module can be configured to receive a substrate rod comprising an aerosol-forming substrate. The aerosol-generating device can further comprise a moveable insertion element and an axially moveable extraction element. The insertion element and the extraction element can be mechanically coupled such that the insertion element and the extraction element are moveable together between an open position and a closed position. The insertion element can be configured to push the substrate rod into the heating module in a distal direction when moving from the open position to the closed position. The extraction element can be configured to push the substrate rod out of the heating module in a proximal direction when moving from the closed position to the open position.

[0005] According to embodiments of the present invention, there is provided an aerosol-generating device which can comprise a heating module. The heating module can be configured to receive a substrate rod comprising an aerosol-forming substrate. The aerosol-generating device can further comprise a moveable insertion element and an axially moveable extraction element. The insertion element and the extraction element can be mechanically coupled such that the insertion element and the extraction element are moveable together between an open position and a closed position. The insertion element can be configured to push the substrate rod into the heating module in a distal direction when moving from the open position to the closed position. The extraction element can be configured to push the substrate rod out of the heating module in a proximal direction when moving from the closed position to the open position.

[0006] When the insertion element and the extraction element are moved from the open position to the closed position, the combined insertion element and extraction element enable improved insertion of the substrate rod into the heating module. Furthermore, when the insertion element and the extraction element are moved from the closed position to the open position, the combined insertion element and extraction element enable improved extraction of the substrate rod from the heating module. The mechanical coupling between the insertion element and the extraction element facilitates movement of the two elements together, without the need to move the insertion element and the extraction element separately.

[0007] The heating module can comprise a heating element. The heating module can be hollow. The heating module can be tubular. The heating module can be cylindrical. The heating module can comprise a heating chamber. The heating element can be arranged at least partially around the heating chamber of the heating module. The heating element can be arranged to completely surround the heating chamber. The heating chamber of the heating module can have an inner diameter that corresponds to the outer diameter of the substrate rod.

[0008] The substrate rod can be an aerosol-generating article. The substrate rod can comprise a substrate portion comprising an aerosol-forming substrate. The substrate rod can comprise further portions, such as one or more further portions and a cooling portion. The cooling portion can have a hollow tubular shape. The cooling portion can be arranged downstream of the substrate portion. A filter portion can be referred to as a mouthpiece filter and be arranged as the most downstream portion of the substrate rod. Another filter portion can be referred to as a pre-filter segment and can be arranged at the most upstream end of the substrate rod. Plug wrap can surround one or more portions of the substrate rod. However, in particularly preferred embodiments, the substrate rod comprises only the substrate portion and, optionally, a wrapper arranged around the substrate portion. In other words, in particularly preferred embodiments, the substrate rod is a very simple substrate rod consisting essentially of an aerosol-forming substrate only, without the need for further substrate portions, such as further portions or a cooling portion.

[0009] The insertion element can be configured to push the substrate rod into the heating chamber of the heating module. The insertion element can have a distal end face configured to push the substrate rod into the heating chamber of the heating module. The distal end face can be flat. The distal end face can be annular. An airflow channel can be arranged to be surrounded by the annular distal end face. The distal end face can be circular. An outer diameter of the distal end face can correspond to an outer diameter of the substrate rod. The insertion element can be cylindrical. An outer diameter of the insertion element can correspond to an outer diameter of the substrate rod.

[0010] The extraction element can be configured to push the substrate stick out of the heating chamber of the heating module. The extraction element can have a proximal end face configured to push the substrate stick out of the heating chamber of the heating module. The proximal end face of the extraction element can be flat. The proximal end face can be annular. The airflow passage can be arranged to be surrounded by the annular proximal end face. The proximal end face can be circular. An outer diameter of the proximal end face can correspond to an outer diameter of the substrate stick. The extraction element can be cylindrical. An outer diameter of the extraction element can correspond to an outer diameter of the substrate stick.

[0011] The movement of the insertion element and the extraction element from the open position to the closed position can be a closing movement. The movement can be in a distal direction. The movement of the insertion element and the extraction element from the closed position to the open position can be an opening movement. The movement can be in a proximal direction.

[0012] In the open position, the substrate stick can be insertable into and removable from the aerosol-generating device. In the closed position, the substrate stick can be arranged within the heating module so as to be heated for aerosol generation.

[0013] The aerosol-generating device can comprise a controller that prevents operation of the heating module in the open position of the insertion element and the extraction element. The controller of the aerosol-generating device can be configured to enable operation of the heating module in the closed position.

[0014] The substrate stick receiving area can be arranged between the insertion element and the extraction element.

[0015] The heating module can be fluidly connected with the substrate stick receiving area. The substrate stick receiving area can have a cylindrical shape. The substrate stick receiving area can have a shape corresponding to an outer periphery of the substrate stick. In other words, the substrate stick can be flushly located within the substrate stick receiving area. This can improve heating efficiency of the aerosol-forming substrate of the substrate stick during heating of the aerosol-forming substrate by the heating module in the closed position.

[0016] An inner diameter of the substrate stick receiving area can correspond to an outer diameter of the substrate stick. An outer diameter of the substrate stick receiving area can correspond to an outer diameter of the insertion element. An outer diameter of the substrate stick receiving area can correspond to an outer diameter of the extraction element.

[0017] The substrate stick receiving area can have an inner diameter between 2 mm and 12 mm, preferably between 4 mm and 10 mm, more preferably between 5 mm and 8 mm. The length of the substrate stick receiving area can be between 6 mm and 24 mm, preferably between 8 mm and 20 mm, more preferably between 10 mm and 18 mm. The substrate stick can have an outer diameter between 2 mm and 12 mm, preferably between 4 mm and 10 mm, more preferably between 5 mm and 8 mm. The length of the substrate stick can be between 6 mm and 24 mm, preferably between 8 mm and 20 mm, more preferably between 10 mm and 18 mm.

[0018] In the open position, the substrate stick receiving area can be accessible for insertion and removal of the substrate stick.

[0019] The substrate stick receiving area can be centrally arranged within the heating module and can be configured as a heating chamber in the closed position. In the closed position, the substrate stick receiving area can be the heating chamber of the heating module or can occupy the same space as the heating chamber of the heating module.

[0020] One or both of the insertion element and the extraction element can be made of a heat resistant material. One or both of the insertion element and the extraction element can be made of a material having a low thermal conductivity. One or both of the insertion element and the extraction element can be made of a material selected from a ceramic material or a temperature resistant polymer (e.g. PEEK, PSU...).

[0021] The insertion force of the insertion element towards the substrate stick can be between 0.1 N and 30 N, preferably between 0.3 N and 10 N, more preferably between 1 N and 5 N. The extraction force of the extraction element towards the substrate stick can be between 0.1 N and 30 N, preferably between 0.3 N and 10 N, more preferably between 1 N and 5 N.

[0022] The insertion element can comprise an airflow channel in fluid contact with the substrate stick receiving area.

[0023] The airflow channel of the insertion element can be arranged along a longitudinal axis of the insertion element. In other words, the airflow channel of the insertion element can be a central airflow channel of the insertion element. The longitudinal axis of the insertion element can be the same as the longitudinal axis of the substrate stick receiving area. The longitudinal axis of the substrate stick receiving area can be the same as the longitudinal axis of the extraction element.

[0024] The extraction element can comprise an airflow channel in fluid contact with the substrate stick receiving area.

[0025] The airflow channel of the extraction element can be arranged along a longitudinal axis of the extraction element. In other words, the airflow channel of the extraction element can be a central airflow channel of the extraction element.

[0026] The insertion element can be part of a mouthpiece of the aerosol-generating device. The insertion element can be integrally formed with the mouthpiece. Thus, the mouthpiece can have a dual function of enabling a user to draw generated aerosol through the mouthpiece and to insert a substrate stick into the heating module by means of the mouthpiece.

[0027] The aerosol-generating device can further comprise a connecting shaft mechanically connecting the insertion element and the extraction element. The connecting shaft can have an extension axis which can be parallel to the extension axis of one or both of the insertion element and the extraction element.

[0028] The connecting shaft can be longitudinal. The connecting shaft can be rigid. The connecting shaft can have a distal end. The distal end of the connecting shaft can be mechanically connected with the extraction element. The connecting shaft can have a proximal end. The proximal end of the connecting shaft can be mechanically connected with the insertion element.

[0029] The insertion element can be pivotally mounted on the connecting shaft to enable a pivotal movement in a plane perpendicular to the extension axis of the connecting shaft. The extension axis of the connecting shaft can be parallel to or along the longitudinal axis of the substrate stick receiving area.

[0030] The insertion element can be rotated in a plane perpendicular to the extension axis of the connecting shaft to enable insertion of a substrate stick into the substrate stick receiving area. Insertion of a substrate stick from a proximal position of the substrate stick receiving area and in a distal direction into the substrate stick receiving area can be enabled. After insertion of a substrate stick into the substrate stick receiving area, the insertion element can be rotated back into an initial position. Thereby, the substrate stick insertion area can be closed. The insertion element can then be enabled to push a substrate stick into the heating module by means of a distal movement of the insertion element.

[0031] The insertion element can be configured to be axially movable.

[0032] The insertion element can be configured for two separate movements. A first movement can be an axial movement to enable pushing of a substrate stick into the heating module. A second movement can be a pivotal movement to open the insertion element for insertion and removal of a substrate stick into and from the substrate stick receiving area. When the insertion element is pivotally moved into an open position, this can be referred to as an open position of the insertion element. When the insertion element is rotated back into an initial position and is pushed distally in order to push a substrate stick into the heating module, this can be referred to as a closed position. In other words, the transition from the open position to the closed position can comprise both movements of the insertion element, i.e. a pivotal movement to close the substrate stick receiving area and a distal axial movement to push a substrate stick into the heating module.

[0033] The insertion element can be pivotally mounted on the aerosol-generating device to effect a pivotal movement between an open position and a closed position in a plane parallel to the longitudinal axis of the aerosol-generating device.

[0034] This is an alternative to the pivotal movement of the insertion element in a plane perpendicular to the extension axis of the connection axis. In this embodiment, the two-part movement can be replaced by a single pivotal movement of the insertion element in a plane parallel to the longitudinal axis of the aerosol-generating device. This pivotal movement can open the rod-receiving area, which can be referred to as the open position. The pivotal movement can simultaneously cause the extraction element to push the rod of substrate out of the heating module to enable the removal of the used rod of substrate. A closing pivotal movement of the insertion element can enable the closing of the rod-receiving area. At the same time, the closing pivotal movement can push the rod of substrate into the heating module, which can be referred to as the closed position.

[0035] The pivotal movement of the insertion element can be a lid-like movement between the open position and the closed position.

[0036] It is particularly preferred that the insertion element is arranged in or integrally formed with the mouthpiece, and that the mouthpiece can be moved in a lid-like movement between the closed position and the open position.

[0037] The insertion element can be mechanically connected to the extraction element via an elastic strip, preferably via a metal strip.

[0038] The elastic strip can enable a conversion of the pivotal movement of the insertion element into an axial movement of the extraction element. In other words, a pivotal opening movement of the insertion element can result in a pulling action on the extraction element, thereby pushing the rod of substrate out of the heating module. A pivotal closing movement of the insertion element can result in a pushing action on the extraction element into the closed position.

[0039] The elastic strip can be rigid enough to enable a transmission of mechanical forces from the pivotal movement of the insertion element to the extraction element. For this purpose, it can be particularly preferred that the elastic strip is provided as a metal strip.

[0040] The insertion element can comprise a rounded portion, the elastic strip can be arranged over the rounded portion, such that an opening pivotal movement of the insertion element results in a pulling action of the elastic strip on the extraction element, preferably wherein a closing pivotal movement of the insertion element results in a pushing action of the elastic strip on the extraction element.

[0041] The rounded portion can act as a lever that converts the pivotal movement of the insertion element into an axial movement of the extraction element. This can be achieved by having the elastic strip extend over the rounded portion. The rounded portion can be part of a hinge of the mouthpiece that connects the mouthpiece with the rest of the aerosol-generating device.

[0042] The present invention also relates to an aerosol-generating device which can comprise a side opening configured for insertion and removal of a substrate stick comprising aerosol-forming substrate. The aerosol-generating device can further comprise a heating module configured to receive the substrate stick. The heating module can be axially movable between an open position and a closed position. The side opening can be obstructed by the heating module when the heating module can be in the closed position. The side opening can be open for receiving the substrate stick or for removing the substrate stick when the heating module can be in the open position.

[0043] The present invention also relates to an aerosol-generating device which comprises a side opening configured for insertion and removal of a substrate stick comprising aerosol-forming substrate. The aerosol-generating device further comprises a heating module configured to receive the substrate stick. The heating module is axially movable between an open position and a closed position. The side opening is obstructed by the heating module when the heating module is in the closed position. The side opening is open for receiving the substrate stick or for removing the substrate stick when the heating module is in the open position.

[0044] The side opening can be arranged in a housing of the aerosol-generating device. The side opening can be fluidly connected with the ambient environment and the substrate stick receiving area.

[0045] The heating module can be movable in a distal direction from the closed position to the open position. Alternatively, but less preferred, the heating module can be movable in a proximal direction from the closed position to the open position.

[0046] In other words, in contrast to the first two embodiments described herein, in which the heating module can be stationary and the substrate stick receiving area is movable from the closed position to the open position and vice versa, in this embodiment the heating module can be movable. At the same time, the substrate stick receiving area can remain in the same position.

[0047] The heating module can be configured to be slidable over the substrate stick in order to receive the substrate stick when the substrate stick is inserted through the side opening and when the heating module is moved from the open position to the closed position.

[0048] The heating module can be mechanically connected to a sliding shaft. The sliding shaft can be mechanically connected to a sliding button arranged on the outside of the aerosol-generating device.

[0049] The sliding button can be configured to move the sliding shaft. The sliding button can be configured to move the heating module from the closed position to the open position and vice versa.

[0050] The heating module can comprise a heating element arranged at least partially around a cavity configured to receive the substrate stick.

[0051] The present application also relates to an aerosol-generating system comprising an aerosol- generating device as described herein, and a substrate stick comprising an aerosol-forming substrate.

[0052] The aerosol-forming substrate can be a solid.

[0053] As used herein, the terms "proximal", "distal", "upstream" and "downstream" are used to describe the relative positions of components or parts of components of the aerosol-generating device with respect to the direction in which a user draws on it during use of the aerosol-generating device.

[0054] The aerosol-generating device can comprise a mouth end through which, in use, aerosol exits the aerosol-generating device and is delivered to a user. The mouth end can also be referred to as a proximal end. In use, a user draws on the proximal end or mouth end of the aerosol-generating device in order to inhale aerosol generated by the aerosol-generating device. Alternatively, a user can draw directly on a substrate stick or a substrate stick inserted into an opening at the proximal end of the aerosol-generating device. The opening at the proximal end can be an opening of a cavity. The cavity can be configured to receive a substrate stick. The aerosol-generating device comprises a distal end opposite the proximal end or mouth end. The proximal end or mouth end of the aerosol-generating device can also be referred to as a downstream end, and the distal end of the aerosol-generating device can also be referred to as an upstream end. Components or parts of components of the aerosol-generating device can be described as being upstream or downstream of each other based on their relative positions between the proximal end, downstream end or mouth end and the distal end or upstream end of the aerosol-generating device.

[0055] As used herein, "aerosol-generating device" relates to a device that interacts with an aerosol-forming substrate to generate an aerosol. The aerosol-forming substrate can be part of a substrate stick, for example part of a smoking article. The aerosol-generating device can be a smoking device that interacts with the aerosol-forming substrate of a substrate stick to generate an aerosol that is directly inhalable by a user into the lungs of the user through the mouth of the user. The aerosol-generating device can be a holder. The device can be an electrically heated smoking device. The aerosol-generating device can comprise a housing, circuitry, a power source, a heating chamber and a heating element.

[0056] As used herein with reference to the present application, the term "smoking" as used in relation to a device, article, system, substrate or otherwise does not refer to conventional smoking in which an aerosol-forming substrate is combusted, at least in part. The aerosol-generating device of the present application is arranged to heat an aerosol-forming substrate to a temperature that is below the combustion temperature of the aerosol-forming substrate but at or above the temperature at which one or more volatile compounds of the aerosol-forming substrate are released to form an inhalable aerosol.

[0057] The aerosol-generating device can comprise circuitry. The circuitry can comprise a microprocessor, which can be a programmable microprocessor. The microprocessor can be part of a controller. The circuitry can comprise further electronic components. The circuitry can be configured to regulate the supply of electrical power to the heating element. The electrical power can be supplied to the heating element continuously after activation of the aerosol-generating device or can be supplied intermittently, such as on a puff-by-puff basis. The electrical power can be supplied to the heating element in the form of current pulses. The circuitry can be configured to monitor the electrical resistance of the heating element and to control the supply of electrical power to the heating element preferably in dependence on the electrical resistance of the heating element.

[0058] The aerosol-generating device can comprise a power source, typically a battery, within the main body of the aerosol-generating device. In one embodiment, the power source is a lithium-ion battery. Alternatively, the power source can be a nickel-metal hydride battery, a nickel-cadmium battery, or a lithium-based battery such as a lithium-cobalt, lithium-iron-phosphate, lithium-titanate, or lithium-polymer battery. As an alternative, the power source can be another form of charge storage device such as a capacitor. The power source can require recharging and can have a capacity that enables sufficient energy to be stored for one or more usage experiences; for example, the power source can have sufficient capacity to generate aerosol for a period of about six minutes or a multiple of six minutes continuously. In another example, the power source can have sufficient capacity to provide a predetermined number of puffs or discrete activations of the heating element.

[0059] The cavity of the aerosol-generating device can have an open end into which the rod of substrate is inserted. The open end can be a proximal end. The cavity can have a closed end opposite the open end. The closed end can be a base of the cavity. The closed end can be closed other than to provide an air orifice arranged in the base. The base of the cavity can be flat. The base of the cavity can be circular. The base of the cavity can be arranged upstream of the cavity. The open end can be arranged downstream of the cavity. The cavity can have an elongate extension. The cavity can have a longitudinal central axis. The longitudinal direction can be a direction extending along the longitudinal central axis between the open end and the closed end. The longitudinal central axis of the cavity can be parallel to the longitudinal axis of the aerosol-generating device.

[0060] The cavity can be configured as a heating chamber. The cavity can have a cylindrical shape. The cavity can have a hollow cylindrical shape. The shape of the cavity can correspond to the shape of the rod of substrate to be received in the cavity. The cavity can have a circular cross-section. The cavity can have an elliptical or rectangular cross-section. The internal diameter of the cavity can correspond to the external diameter of the rod of substrate.

[0061] The airflow passage can extend through the cavity. Ambient air can be drawn into the aerosol-generating device through the airflow passage, into the cavity and towards the user. Downstream of the cavity, a mouthpiece can be arranged, or the user can draw directly on the rod of substrate. The airflow passage can extend through the mouthpiece.

[0062] In any aspect of the disclosure, the heating element can 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 composites made from ceramic and metallic materials. Such composites can include 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-containing alloys, cobalt-containing alloys, chromium-containing alloys, aluminum-containing alloys, titanium-containing alloys, zirconium-containing alloys, hafnium-containing alloys, niobium-containing alloys, molybdenum-containing alloys, tantalum-containing alloys, tungsten-containing alloys, tin-containing alloys, gallium-containing alloys, manganese-containing alloys, gold-containing alloys, iron-containing alloys, and superalloys based on nickel, iron, cobalt, stainless steel, Timetal®, and iron-manganese-aluminum based alloys. In composites, the electrically resistive material can optionally be embedded in, encapsulated by, or coated by an insulating material, or vice versa, depending on the kinetics of energy transfer and the desired external physicochemical properties.

[0063] As described, in any of the aspects of the disclosure, the heating element can be part of the aerosol-generating device. The aerosol-generating device can comprise an internal heating element or an external heating element or both an internal heating element and an external heating element, where "internal" and "external" are in relation to the aerosol-forming substrate. The internal heating element can take any suitable form. For example, the internal heating element can take the form of a heating blade. Alternatively, the internal heater can take the form of a sleeve or substrate with different electrically conductive portions, or a resistive metal tube. Alternatively, the internal heating element can be one or more heating pins or rods that extend through the center of the aerosol-forming substrate. Other alternatives include heating wires or filaments, for example, Ni-Cr, platinum, tungsten, or alloy wires, or a heating plate. Optionally, the internal heating element can be deposited in or on a rigid carrier material. In one such embodiment, the resistive heating element can be formed using a metal that has a defined relationship between temperature and resistivity. In such an exemplary device, the metal can be formed as a track on a suitable insulating material, such as a ceramic material, and then sandwiched in another insulating material, such as glass. A heater formed in this way can be used to both heat and monitor the temperature of the heating element during operation.

[0064] The external heating element can take any suitable form. For example, the external heating element can 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, the external heating element can take the form of a metal mesh or meshes, a flexible printed circuit board, a molded interconnect device (MID), a ceramic heater, a flexible carbon fibre heater, or can be formed using a coating technique such as plasma vapour deposition on a suitably shaped substrate. The external heating element can also be formed using a metal having a defined relationship between temperature and resistivity. In such an exemplary device, the metal can be formed as a track between two layers of suitable insulating material. An external heating element formed in this way can be used both to heat and to monitor the temperature of the external heating element during operation.

[0065] As an alternative to a resistive heating element, the heating element can be configured as an inductive heating element. An inductive heating element can comprise an induction coil and a susceptor. Generally, a susceptor is a material that is capable of generating heat when penetrated by an alternating magnetic field. If the susceptor is electrically conductive, eddy currents are typically induced by the alternating magnetic field. If the susceptor is magnetic, another effect that typically contributes to heating is commonly referred to as magnetic hysteresis loss. Magnetic hysteresis loss occurs primarily due to the movement of magnetic domain blocks within the susceptor, as the magnetic orientation of these magnetic domain blocks will align with the alternating magnetic induction field. Another effect that contributes to magnetic hysteresis loss is when magnetic domains will grow or shrink within the susceptor. Generally, all of these changes in the susceptor that occur on a nanometer scale or below are referred to as "magnetic hysteresis loss" as they generate heat in the susceptor. Thus, if the susceptor is both magnetic and electrically conductive, both magnetic hysteresis loss and eddy current generation will contribute to the heating of the susceptor. If the susceptor is magnetic, but not electrically conductive, then magnetic hysteresis loss will be the only means of heating the susceptor when penetrated by an alternating magnetic field. According to the present invention, the susceptor can be electrically conductive or magnetic, or both electrically conductive and magnetic. An alternating magnetic field generated by one or several induction coils heats the susceptor, which then transfers heat to the aerosol-forming substrate so that an aerosol is formed. Heat transfer can primarily be through thermal conduction. This heat transfer is optimal if the susceptor is in close thermal contact with the aerosol-forming substrate.

[0066] As used herein, the term "aerosol-generating article" or "substrate rod" refers to an article or rod comprising an aerosol-forming substrate capable of releasing volatile compounds that can form an aerosol. For example, the substrate rod can be a smoking article or rod that generates an aerosol that is directly inhaled by a user through the user's mouth into the user's lungs. The substrate rod can be disposable.

[0067] 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 can be released by heating the aerosol-forming substrate. The aerosol-forming substrate can suitably be a substrate rod or part of a smoking article.

[0068] The aerosol-forming substrate can be a solid aerosol-forming substrate. The aerosol-forming substrate can comprise both a solid component and a liquid component. The aerosol-forming substrate can comprise a tobacco-containing material containing volatile tobacco flavour compounds that are released from the substrate upon heating. The aerosol-forming substrate can comprise a non-tobacco material. The aerosol-forming substrate can comprise an aerosol former that facilitates the formation of a dense and stable aerosol. Examples of suitable aerosol formers are glycerol and propylene glycol.

[0069] The aerosol-generating substrate preferably comprises: homogenized tobacco material, an aerosol former, and water. Providing homogenized tobacco material can improve aerosol generation, nicotine content, and flavour characteristics of the aerosol generated during heating of the substrate rod. In particular, the process of manufacturing homogenized tobacco involves grinding tobacco leaves, which more effectively enables the release of nicotine and flavour upon heating.

[0070] A non-exhaustive list of non-limiting examples is provided below. Any one or more features of these examples can be combined with any one or more features of another example, embodiment, or aspect described herein.

[0071] Example 1. An aerosol-generating device, the aerosol-generating device comprising:

[0072] a heating module configured to receive a substrate rod comprising an aerosol- forming substrate,

[0073] a movable insertion element, and

[0074] an axially movable extraction element,

[0075] wherein the insertion element and the extraction element are mechanically coupled such that the insertion element and the extraction element are movable together between an open position and a closed position, wherein the insertion element is configured to push the substrate rod into the heating module in a distal direction when moving from the open position to the closed position, and wherein the extraction element is configured to push the substrate rod out of the heating module in a proximal direction when moving from the closed position to the open position.

[0076] Example 2. The aerosol-generating device according to example 1, wherein a substrate rod receiving area is arranged between the insertion element and the extraction element.

[0077] Example 3. Aerosol-generating device according to Example 2, wherein the substrate rod receiving area is accessible in the open position for insertion and removal of the substrate rod.

[0078] Example 4. Aerosol-generating device according to Example 2 or 3, wherein the substrate rod receiving area is centrally arranged within the heating module and is configured as a heating chamber in the closed position.

[0079] Example 5. Aerosol-generating device according to any one of Examples 2 to 4, wherein the insertion element comprises an airflow passage in fluid contact with the substrate rod receiving area.

[0080] Example 6. Aerosol-generating device according to any one of Examples 2 to 5, wherein the extraction element comprises an airflow passage in fluid contact with the substrate rod receiving area.

[0081] Example 7. Aerosol-generating device according to any one of the preceding Examples, wherein the insertion element directly contacts the substrate rod when the substrate rod is received in the aerosol-generating device.

[0082] Example 8. Aerosol-generating device according to any one of the preceding Examples, wherein the extraction element directly contacts the substrate rod when the substrate rod is received in the aerosol-generating device.

[0083] Example 9. Aerosol-generating device according to any one of the preceding Examples, wherein the insertion element is part of a mouthpiece of the aerosol-generating device.

[0084] Example 10. Aerosol-generating device according to any one of the preceding Examples, wherein the aerosol-generating device further comprises a connecting shaft mechanically connecting the insertion element and the extraction element, preferably wherein the connecting shaft has an extension axis parallel to an extension axis of one or both of the insertion element and the extraction element.

[0085] Example 11. Aerosol-generating device according to Example 10, wherein the insertion element is pivotally mounted on the connecting shaft to enable pivotal movement in a plane perpendicular to the extension axis of the connecting shaft.

[0086] Example 12. Aerosol-generating device according to any one of the preceding Examples, wherein the insertion element is configured to be axially movable.

[0087] Example 13. Aerosol-generating device according to any one of Examples 1 to 9, wherein the insertion element is pivotally mounted on the aerosol-generating device to enable pivotal movement between the open position and the closed position in a plane parallel to a longitudinal axis of the aerosol-generating device.

[0088] Example 14. Aerosol-generating device according to example 13, wherein the pivotal movement of the insertion element is a lid-like movement between the open position and the closed position.

[0089] Example 15. Aerosol-generating device according to example 13 or 14, wherein the insertion element is mechanically connected to the extraction element via an elastic strip, preferably via a metal strip.

[0090] Example 16. Aerosol-generating device according to example 15, wherein the insertion element comprises a rounded portion, the elastic strip being arranged on top of the rounded portion, such that the open pivotal movement of the insertion element results in a pulling action of the elastic strip on the extraction element, preferably wherein the closed pivotal movement of the insertion element results in a pushing action of the elastic strip on the extraction element.

[0091] Example 17. Aerosol-generating device, the aerosol-generating device comprising:

[0092] a side opening configured for insertion and removal of a substrate stick comprising aerosol-forming substrate, and

[0093] a heating module configured to receive the substrate stick, wherein the heating module is axially movable between an open position and a closed position,

[0094] wherein the side opening is blocked by the heating module when the heating module is in the closed position, wherein the side opening is open for receiving the substrate stick or for removing the substrate stick when the heating module is in the open position.

[0095] Example 18. Aerosol-generating device according to example 17, wherein the heating module is movable in a distal direction from the closed position to the open position.

[0096] Example 19. Aerosol-generating device according to example 17 or 18, wherein the heating module is configured to be slidable over the substrate stick in order to receive the substrate stick when the substrate stick is inserted through the side opening and when the heating module is moved from the open position to the closed position.

[0097] Example 20. Aerosol-generating device according to any one of examples 17 to 19, wherein the heating module is mechanically connected to a sliding shaft, preferably wherein the sliding shaft is mechanically connected to a sliding button arranged on an exterior of the aerosol-generating device.

[0098] Example 21. An aerosol-generating device according to any one of the preceding examples, wherein the heating module comprises a heating element arranged at least partially around a cavity configured to receive the substrate stick.

[0099] Example 22. An aerosol-generating system comprising an aerosol-generating device according to any one of the preceding examples, and a substrate stick comprising aerosol-forming substrate.

[0100] Example 23. An aerosol-generating system according to Example 22, wherein the aerosol-forming substrate is solid.

[0101] Features described in relation to one embodiment can equally apply to other embodiments of the application.

[0102] The application will be further described, by way of example only, with reference to the accompanying drawings in which:

[0103] Figure 1A and 1B a first embodiment of an aerosol-generating device is shown which comprises an insertion element and a removal element;

[0104] Figures 2A-2E insertion and removal of a substrate stick in the aerosol-generating device of the first embodiment is shown;

[0105] Figure 3A and 3B a second embodiment of an aerosol-generating device is shown in which the mouthpiece is pivotally mounted to the main body of the aerosol-generating device;

[0106] Figures 4A-4E insertion and removal of a substrate stick in the aerosol-generating device of the second embodiment is shown;

[0107] Figure 5A and 5B a third embodiment of an aerosol-generating device is shown in which the mouthpiece is fixed and the heating module is axially movable and a side opening is provided in the main body of the aerosol-generating device; and

[0108] Figures 6A-6E insertion and removal of a substrate stick in the aerosol-generating device of the third embodiment is shown.

[0109] Figure 1A and 1B a first embodiment of an aerosol-generating device 10 is shown. The aerosol-generating device 10 comprises a mouthpiece 12 and a main body 14. The mouthpiece 12 comprises an insertion element 16. A removal element 18 is arranged in the main body 14. The main body 14 can comprise further components such as a power supply and a controller for controlling the supply of electrical energy from the power supply to the heating element.

[0110] The insertion element 16 is integrally formed with the mouthpiece 12. The insertion element 16 is a tubular element. The airflow passage 20 is centrally arranged within the insertion element 16. The airflow passage 20 continues through the mouthpiece 12 so that a user can inhale aerosol generated by the aerosol-generating device 10. The insertion element 16 protrudes from the mouthpiece 12 at a distal end of the mouthpiece 12. The insertion element 16 has a distal end face configured to contact a substrate stick 22 comprising an aerosol-forming substrate.

[0111] In Figure 1A and 1B the substrate stick 22 occupies the space of the substrate stick receiving area 24. The substrate stick receiving area 24 is arranged between the insertion element 16 and the extraction element 18. The substrate stick receiving area 24 is shaped to allow receiving the substrate stick 22.

[0112] The extraction element 18 is mechanically connected with the insertion element 16 via a connecting shaft 26. The connecting shaft 26 is mounted axially moveable relative to the main body 14 of the aerosol-generating device 10. The connecting shaft 26 is elongated. The connecting shaft 26 extends parallel to the longitudinal axis of the aerosol-generating device 10. The connecting shaft 26 is mechanically connected to the insertion element 16 via the mouthpiece 12. The connecting shaft 26 is rigidly connected with the extraction element 18. In contrast, the insertion element 16 is rotatably mounted on the connecting shaft 26 in a plane perpendicular to the longitudinal axis of the aerosol-generating device 10. Relative to the axial direction, the insertion element 16 is rigidly mounted on the connecting shaft 26. This mounting arrangement is such that the insertion element 16 and the extraction element 18 perform a synchronous axial movement together with the connecting shaft 26.

[0113] This synchronous axial movement of the insertion element 16 and the extraction element 18 together with the connecting shaft 26 is shown between Figure 1A and 1B In Figure 1A the insertion element 16 and the extraction element 18 are in a closed position. In this position, the insertion element 16 and the extraction element 18 are in a distal position and the substrate stick receiving area 24 in which the substrate stick 22 is arranged is positioned within the main body 14 of the aerosol-generating device 10. Within the main body 14, a heating module 28 is arranged. The heating module 28 comprises a heating chamber and a heating element is arranged at least partially around the heating chamber. The heating chamber is the space within Figure 1A which is occupied by the substrate stick receiving area 24 and the substrate stick 22 in Figure 1BIn the position shown in Fig. 1 1, the insertion element 16 and the extraction element 18 are moved in a proximal direction. This movement pushes the substrate stick 22 out of the heating chamber of the heating module 28 by means of the extraction element 18. As described in more detail below with respect to Fig. 2, a rotational movement of the mouthpiece 12 and thus of the insertion element 16 brings the insertion element 16 and the extraction element 18 into an open position. In this position, the substrate stick 22 can be removed and replaced by a new substrate stick 22. After returning the mouthpiece 12 and the insertion element 16 to the position shown in Figure 1B Fig. 1 1, the insertion element 16 can then push the substrate stick 22 back into the heating chamber of the heating module 28 to resume operation.

[0114] Similar to the configuration of the insertion element 16, the extraction element 18 has a tubular shape to enable the airflow passage 20 to extend centrally through the extraction element 18. Thus, the airflow passage 20 enables air to be drawn through the extraction element 18 and into the heating chamber of the heating module 28 in the closed position. Subsequently, the air can flow through the insertion element 16 and the mouthpiece 12 to be inhaled by the user.

[0115] Figures 2A-2E The insertion and removal of the substrate stick 22 in the aerosol-generating device 10 is shown. In Figure 2A Fig. 1 1, a new substrate stick 22 is inserted into the substrate stick receiving area 24. During the insertion, the insertion element 16 and the extraction element 18 are in a proximal position. In addition, the insertion element 16 is rotated open to expose the substrate stick receiving area 24. Then, the substrate stick 22 can be inserted into the substrate stick receiving area 24. In a next step, as shown in Figure 2B Fig. 1 2, the insertion element 16 is rotated closed to cover the proximal end of the substrate stick 22. In other words, the insertion element 16 is rotated into place to abut the substrate stick receiving area 24 and to be able to subsequently push the substrate stick 22 into the heating chamber of the heating module. This step is shown in Figure 2C Fig. 1 3, in which the insertion element 16 pushes the substrate stick 22 in a distal direction into the heating chamber of the heating module 28 for aerosol generation. Depending on the frame of reference, instead of pushing the mouthpiece 12 and the insertion element 16 in a distal direction into the fixed body 14 of the aerosol-generating device 10, the same operation can be described as pushing the body 14 of the aerosol-generating device 10 in a proximal direction towards the fixed mouthpiece 12 and the insertion element 16.

[0116] Figure 2D The beginning of the removal of the used substrate stick 22 is shown. To facilitate the removal, the mouthpiece 12, the insertion element 16 and the extraction element 18 are moved in a proximal direction to cause the extraction element 18 to push the substrate stick 22 out of the heating chamber of the heating module 28. Subsequently, as shown in Figure 2E Fig. 1 4, the mouthpiece 12 and the insertion element 16 are rotated open to enable the used substrate stick 22 to be removed. Thereafter, as shown inFigure 2A As shown in Fig. 6, a new substrate stick 22 can be inserted and the process can be repeated. As described previously, the movement of the insertion element 16 and the removal element 18 is facilitated by connecting the two elements 16, 18 in such a way that the insertion element 16 can move in the axial direction and rotate in a plane perpendicular to the axial direction via the connecting shaft 26 such that the removal element 18 can only move in the axial direction.

[0117] Figure 3A and 3B A second embodiment of the aerosol-generating device 10 is shown. In this embodiment, the mouthpiece 12 is pivotally mounted on the main body 14 of the aerosol-generating device 10. The mouthpiece 12 comprises a rounded portion 30 adjacent to a hinge 32. The hinge 32 facilitates the pivotal mounting of the mouthpiece 12.

[0118] An elastic strip 34, preferably a metal strip, is provided to extend over the rounded portion 30. The elastic strip 34 establishes a mechanical connection between the mouthpiece 12 comprising the insertion element 16 and the removal element 18. The rounded portion 30 acts as a lever such that a pivotal opening movement of the mouthpiece 12 and the insertion element 16 is translated into an axial movement of the removal element 18 via the elastic strip 34. In other words, the pivotal opening movement of the mouthpiece 12 results in a pulling action on the removal element 18. The pivotal opening movement of the mouthpiece 12 is a cover-like movement. The opening movement of the mouthpiece 12 is in a plane parallel to the longitudinal axis of the aerosol-generating device 10.

[0119] Figure 3A A closed position of the insertion element 16 and the removal element 18 is shown. Similar to the closed position described in the first embodiment, the substrate stick 22 is arranged in the heating chamber of the heating module 28 in the closed position for aerosol generation. The elastic strip 34 is straight in this position. In Figure 3B In the open position, the mouthpiece 12 is open. Thus, the elastic strip 34 pulls the removal element 18, which pushes the substrate stick 22 out of the main body 14 of the aerosol-generating device 10. Due to the pivotal movement of the mouthpiece 12, the mouthpiece 12 and the insertion element 16 do not obstruct in this open position, such that a further rotational movement of the mouthpiece 12 to access the used substrate stick 22 is not necessary. Instead, as in Figure 3B In the open position of the mouthpiece 12, the new substrate stick 22 can be accessed and replaced, as shown in Fig. 6.

[0120] Similar to Figures 2A-2E , Figures 4A-4E The insertion of a new substrate stick 22 ( Figure 4A ), the closing of the mouthpiece 12 from the open position to the closed position ( Figure 4B ), the operation of the aerosol-generating device 10 ( Figure 4C ), the opening of the mouthpiece 12 from the closed position to the open position ( Figure 4D) and the removal of the used substrate stick 22 ( Figure 4E ). In contrast to the first embodiment, a single movement (pivoting movement) instead of the two movement configurations (axial movement followed by rotational movement) of the first embodiment facilitates the opening. The same applies to the closing movement of the mouthpiece 12.

[0121] Figure 5A and 5B A third embodiment of the aerosol-generating device 10 is shown. In this embodiment, the mouthpiece 12 is fixed. Instead, the heating module 28 is axially movable and the side opening 38 is provided in the main body 14 of the aerosol-generating device 10. The heating module 28 is slidably mounted to the heating module shaft 36 to facilitate the axial movement of the heating module 28. A biasing element 40 in the form of a spring biases the heating module 28 in the proximal direction. As shown in Figure 5A , when the heating module 28 is in the proximal position, the heating module 28 is in the open position. In this position, the substrate stick receiving area 24 is accessible from the outside of the aerosol-generating device 10 by means of the side opening 38. Thus, a new substrate stick 22 can be inserted laterally into the side opening 38 and into the substrate stick receiving area 24. Subsequently, as shown in Figure 5B , the heating module 28 is pushed in the distal direction into the closed position against the biasing force of the biasing element 40. In this position, the heating module 28 is pushed over the substrate stick receiving area 24 so that the substrate stick 22 is arranged in the heating chamber of the heating module 28. The side wall 44 of the heating module 28 closes the side opening 38 in this position to inhibit access to the substrate stick 22. The movement of the heating module 28, in particular the distal movement from the open position to the closed position, is facilitated by a button 42 (shown in Fig. 6 discussed below). The button 42 is mechanically connected with the heating module 28. The button 42 is arranged on the outer periphery of the aerosol-generating device 10 so that a user can manipulate the button 42.

[0122] Similar to Figures 2A-2E and Figures 4A-4E , Figures 6A-6E is shown: the insertion of a new substrate stick 22 ( Figure 6A ), the closing of the side opening 38 from the open position to the closed position ( Figure 6B ), the operation of the aerosol-generating device 10 ( Figure 6C ), the opening of the side opening 38 from the closed position to the open position ( Figure 6D ) and the removal of the used substrate stick 22 ( Figure 6E ). Fig. 6 further shows the button 42 for actuating the movement of the heating module 28, at least the distal (closing) movement of the heating module 28. The proximal (opening) movement of the heating module 28 can be automatic due to the biasing force of the biasing element 40.

Claims

1. An aerosol generating apparatus, the aerosol generating apparatus comprising: A heating module, configured to receive a matrix rod comprising an aerosol-forming matrix, Movable insert element, and Axially movable component removal The insertion element and the removal element are mechanically coupled such that the insertion element and the removal element are movable together between an open position and a closed position, wherein the insertion element is configured to push the matrix rod into the heating module in a distal direction when moving from the open position to the closed position, and wherein the removal element is configured to push the matrix rod out of the heating module in a proximal direction when moving from the closed position to the open position.

2. The aerosol generating apparatus according to claim 1, wherein the matrix rod receiving area is arranged between the insertion element and the extraction element.

3. The aerosol generating apparatus according to claim 2, wherein the matrix rod receiving area is accessible in the open position for inserting and removing the matrix rod.

4. The aerosol generating apparatus according to claim 2 or 3, wherein the matrix rod receiving area is centrally arranged within the heating module and configured as a heating chamber in the enclosed position.

5. The aerosol generating apparatus according to any one of the preceding claims, wherein when the matrix rod is received in the aerosol generating apparatus, one or both of the insertion element and the removal element directly contact the matrix rod.

6. The aerosol generating apparatus according to any one of the preceding claims, wherein the insertion element is part of the mouthpiece of the aerosol generating apparatus.

7. The aerosol generating apparatus according to any one of the preceding claims, wherein the aerosol generating apparatus further comprises a connecting shaft mechanically connecting the insertion element and the extraction element, preferably wherein the connecting shaft has an extension axis parallel to the extension axis of one or both of the insertion element and the extraction element, more preferably wherein the insertion element is pivotally mounted on the connecting shaft to achieve pivotal movement in a plane perpendicular to the extension axis of the connecting shaft.

8. The aerosol generating apparatus according to any one of claims 1 to 6, wherein the insertion element is pivotally mounted on the aerosol generating apparatus to realize pivotal movement between the open position and the closed position in a plane parallel to the longitudinal axis of the aerosol generating apparatus, preferably wherein the pivotal movement of the insertion element is a cap-like movement between the open position and the closed position.

9. The aerosol generating apparatus according to claim 8, wherein the insertion element is mechanically connected to the extraction element via an elastic strip, preferably via a metal strip.

10. The aerosol generating apparatus according to claim 9, wherein the inserting element includes a rounded portion, and the elastic strip is arranged on the rounded portion such that an opening pivoting movement of the inserting element generates a pulling action of the elastic strip on the extraction element, preferably wherein a closing pivoting movement of the inserting element generates a pushing action of the elastic strip on the extraction element.

11. An aerosol generating apparatus, the aerosol generating apparatus comprising: A side opening configured for inserting and removing a matrix rod comprising an aerosol-forming matrix, and A heating module configured to receive the matrix rod, wherein the heating module is axially movable between an open position and a closed position. When the heating module is in the closed position, the side opening is blocked by the heating module; when the heating module is in the open position, the side opening is open for receiving the matrix rod or for removing the matrix rod.

12. The aerosol generating apparatus of claim 11, wherein the heating module is configured to slide over the matrix rod so as to receive the matrix rod when the matrix rod is inserted through the side opening and when the heating module moves from the open position to the closed position.

13. The aerosol generating apparatus according to claim 11 or 12, wherein the heating module is mechanically connected to a sliding shaft, preferably wherein the sliding shaft is mechanically connected to a sliding button arranged on the outside of the aerosol generating apparatus.

14. An aerosol generation system, the aerosol generation system comprising an aerosol generation device according to any one of the preceding claims, and a matrix rod comprising an aerosol forming matrix.

15. The aerosol generation system according to claim 14, wherein the aerosol forming matrix is ​​solid.

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