Aerosol provision device

Abstract

An aerosol provision device (100) for generating aerosol from aerosol generating material using an aerosol generator, the aerosol provision device comprising: an inhale detector (110), the inhale detector configured to detect an inhalation on the aerosol provision device by a user; an aroma module (200) configured to transmit an aroma towards the user; and a controller (120), wherein the controller is configured, in response to detection of the inhalation by the inhale detector, to control the aroma transmitter to transmit the aroma

Description

[0001] AEROSOL PROVISION DEVICE

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to an aerosol provision device, an aerosol provision system, a method of operating an aerosol provision device, a charging unit for an aerosol provision device and a method of operating a charging unit for an aerosol provision device.

[0004] BACKGROUND

[0005] Smoking items such as cigarettes, cigars and the like traditionally burn tobacco during use, producing tobacco smoke. Efforts are being made to create alternatives to such items. In this regard, it may be envisaged in particular to heat, but not burn, a suitable material to release certain compounds, particularly in an inhalable aerosol. A suitable material may or may not contain tobacco and may or may not contain nicotine. Such a material may, e.g., be provided in a cylindrical unit or, more generally, an article comprising an aerosol generating material.

[0006] Other examples are vapour provision devices and systems such as e-cigarettes which generally comprise a reservoir of a source liquid containing a formulation, which may or may not contain nicotine, from which an aerosol is generated, such as through vaporisation or other means.

[0007] SUMMARY

[0008] According to an aspect of the present disclosure, there is provided an aerosol provision device for generating aerosol from aerosol generating material using an aerosol generator, the aerosol provision device comprising: an inhale detector, the inhale detector configured to detect an inhalation on the aerosol provision device by a user; an aroma module configured to transmit an aroma towards the user; and a controller, wherein the controller is configured, in response to detection of the inhalation by the inhale detector, to control the aroma transmitter to transmit the aroma towards the user.

[0009] The aroma module may comprise a blower, the blower configured to transmit the aroma towards the user. The blower may be a microblower.

[0010] The blower may comprise a diaphragm pump.

[0011] The blower may comprise a piezoelectric element, the piezoelectric element configured to drive the blower.

[0012] The aroma module may comprise a plurality of blowers.

[0013] The aroma module may comprise an aroma chamber, the aroma chamber configured to receive aroma generating material, wherein the aroma module is configured to generate aroma by air flowing through the aroma chamber past the aroma generating material.

[0014] The aroma chamber may comprise a cover, the cover configured to close the aroma chamber when the cover is in a closed position, the cover openable from the closed position to permit generation of aroma.

[0015] The cover may comprise a bias element configured to bias the cover towards the closed position, the bias element being configured to be overcome by air flowing through the aroma chamber.

[0016] The blower may be configured to cause air flow through the aroma chamber.

[0017] The aerosol provision device may comprise a plurality of aroma generating chambers.

[0018] The aerosol provision device may comprising a blower for each aroma generating chamber.

[0019] The aerosol provision may comprise an additional blower. The aroma module may be configured to transmit the aroma towards the user’s nose.

[0020] The aroma module may not be configured to transmit the aroma into the user’s mouth.

[0021] The aroma module may be outside an inhalation flow path, the inhalation flow path directing airflow past the aerosol generator.

[0022] The aroma may comprise droplets having a first mean diameter, the first mean diameter selected for olfactory absorption.

[0023] The aerosol provision device may comprise the aerosol generator.

[0024] The aerosol may comprise droplets having a second mean diameter, the second mean diameter selected for pulmonary absorption.

[0025] According to an aspect there is provided an aerosol provision system comprising the aerosol provision device and an aerosol forming article, the aerosol forming article comprising the aerosol generating material.

[0026] According to an aspect there is provided an aroma module for an aerosol provision device, the aerosol provision device configured to generate aerosol from aerosol generating material using an aerosol generator, the aroma module configured to transmit an aroma towards the user in response to detection of an inhalation on the aerosol provision device.

[0027] BRIEF DESCRIPTION OF THE DRAWING

[0028] Various embodiments will now be described, by way of example only, and with reference to the accompanying drawings, in which:

[0029] Figure 1 shows a cross sectional view through a schematic representation of an aerosol provision system; and

[0030] Figure 2 shows a cross sectional view through a schematic representation of an aroma generator of an aroma module when viewed from a side of the aroma module; and

[0031] Figure 3 shows a cross sectional view through a schematic representation of the aroma module when viewed from an end of the aroma module.

[0032] DETAILED DESCRIPTION

[0033] As used herein, the term “aerosol-generating material” is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol-generating material may, for example, be in the form of a solid, liquid or gel which may or may not contain an active substance and / or flavourants. Aerosol-generating material may include any plant based material, such as tobacco-containing material and may, for example, include one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco or tobacco substitutes. Aerosol-generating material also may include other, non-tobacco, products, which, depending on the product, may or may not contain nicotine.

[0034] Aerosol-generating material may for example be in the form of a solid, a liquid, a gel, a wax or the like. Aerosol-generating material may for example also be a combination or a blend of materials. Aerosol-generating material may also be known as “smokable material”.

[0035] The aerosol-generating material may comprise a binder and an aerosol former. Optionally, an active and / or filler may also be present. Optionally, a solvent, such as water, is also present and one or more other components of the aerosol-generating material may or may not be soluble in the solvent. In some embodiments, the aerosol-generating material is substantially free from botanical material. In some embodiments, the aerosol-generating material is substantially tobacco free.

[0036] The aerosol-generating material may comprise or be an “amorphous solid”. The amorphous solid may be a “monolithic solid”. In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it. In some embodiments, the aerosolgenerating material may, for example, comprise from about 50wt%, 60wt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or 100wt% of amorphous solid. The aerosol-generating material may comprise an aerosol-generating film. The aerosol-generating film may comprise or be a sheet, which may optionally be shredded to form a shredded sheet. The aerosol-generating sheet or shredded sheet may be substantially tobacco free.

[0037] According to the present disclosure, a “non-combustible” aerosol provision system is one where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user.

[0038] In some embodiments, the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.

[0039] In some embodiments, the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosolgenerating material is not a requirement.

[0040] In some embodiments, the non-combustible aerosol provision system is an aerosol-generating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.

[0041] In some embodiments, the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated. Each of the aerosolgenerating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine. In some embodiments, the hybrid system comprises a liquid or gel aerosol-generating material and a solid aerosol-generating material. The solid aerosol-generating material may comprise, for example, tobacco or a non-tobacco product.

[0042] Typically, the non-combustible aerosol provision system may comprise a non-combustible aerosol provision device and a consumable for use with the non- combustible aerosol provision device.

[0043] In some embodiments, the disclosure relates to consumables comprising aerosol-generating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.

[0044] In some embodiments, the non-combustible aerosol provision system, such as a non-combustible aerosol provision device thereof, may comprise a power source and a controller. The power source may, for example, be an electric power source or an exothermic power source. In some embodiments, the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosol-generating material or to a heat transfer material in proximity to the exothermic power source.

[0045] In some embodiments, the non-combustible aerosol provision system may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and / or an aerosol-modifying agent.

[0046] In some embodiments, the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosolgenerating material storage area, an aerosol-generating material transfer component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and / or an aerosol-modifying agent.

[0047] Aerosol generating material is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol generating material may, for example, be in the form of a solid, liquid or semisolid (such as a gel) which may or may not contain an active substance and / or flavourants.

[0048] The aerosol generating material may comprise a binder and an aerosol former. Optionally, an active and / or filler may also be present. Optionally, a solvent, such as water, is also present and one or more other components of the aerosol generating material may or may not be soluble in the solvent. In some embodiments, the aerosol generating material is substantially free from botanical material. In particular, in some embodiments, the aerosol generating material is substantially tobacco free.

[0049] The aerosol generating material may comprise or be an aerosol generating film. The aerosol generating film may be formed by combining a binder, such as a gelling agent, with a solvent, such as water, an aerosolformer and one or more other components, such as active substances, to form a slurry and then heating the slurry to volatilise at least some of the solvent to form the aerosol generating film. The slurry may be heated to remove at least about 60 wt%, 70 wt%, 80 wt%, 85 wt% or 90 wt% of the solvent. The aerosol generating film may be a continuous film or a discontinuous film, such an arrangement of discrete portions of film on a support. The aerosol generating film may be substantially tobacco free. The aerosol generating film may comprise or be a sheet, which may optionally be shredded to form a shredded sheet.

[0050] The aerosol generating material may comprise one or more active substances and / or flavours, one or more aerosol-former materials, and optionally one or more other functional material.

[0051] An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosol generating material. In some embodiments, the aerosol generator is a heater configured to subject the aerosol generating material to heat energy, so as to release one or more volatiles from the aerosol generating material to form an aerosol. In some embodiments, the aerosol generator is configured to cause an aerosol to be generated from the aerosol generating material without heating. For example, the aerosol generator may be configured to subject the aerosol generating material to one or more of vibration, increased pressure, or electrostatic energy.

[0052] A consumable is an article comprising or consisting of aerosol generating material, part or all of which is intended to be consumed during use by a user. A consumable may comprise one or more other components, such as an aerosol generating material storage area, an aerosol generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and / or an aerosol-modifying agent. A consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol generating material to generate aerosol in use. The heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.

[0053] A susceptor is a heating material that is heatable by penetration with a varying magnetic field, such as an alternating magnetic field. The susceptor may be an electrically-conductive material, so that penetration thereof with a varying magnetic field causes induction heating of the heating material. The heating material may be magnetic material, so that penetration thereof with a varying magnetic field causes magnetic hysteresis heating of the heating material. The susceptor may be both electrically-conductive and magnetic, so that the susceptor is heatable by both heating mechanisms. The aerosol provision device that is configured to generate the varying magnetic field is referred to as a magnetic field generator, herein. Non-combustible aerosol provision systems may comprise a modular assembly including both a reusable aerosol provision device and a replaceable aerosol generating article. In some implementations, the non-combustible aerosol provision device may comprise a power source and a controller (or control circuitry). The power source may, for example, comprise an electric power source, such as a battery or rechargeable battery. In some implementations, the non-combustible aerosol provision device may also comprise an aerosol generating component. However, in other implementations the aerosol generating article may comprise partially, or entirely, the aerosol generating component.

[0054] Induction heating is a process in which an electrically-conductive object, referred to as a susceptor, is heated by penetrating the object with a varying magnetic field. The process is described by Faraday's law of induction and Ohm's law. An induction heater may comprise an electromagnet and a device for passing a varying electrical current, such as an alternating current, through the electromagnet. When the electromagnet and the object to be heated are suitably relatively positioned so that the resultant varying magnetic field produced by the electromagnet penetrates the object, one or more eddy currents are generated inside the object. The object has a resistance to the flow of electrical currents and when such eddy currents are generated in the object, their flow against the electrical resistance of the object causes the object to be heated. This process is called Joule, ohmic or resistive heating.

[0055] Magnetic hysteresis heating is a process in which an object made of a magnetic material is heated by penetrating the object with a varying magnetic field. A magnetic material can be considered to comprise many atomic-scale magnets, or magnetic dipoles. When a magnetic field penetrates such material, the magnetic dipoles align with the magnetic field. Therefore, when a varying magnetic field, such as an alternating magnetic field, for example as produced by an electromagnet, penetrates the magnetic material, the orientation of the magnetic dipoles changes with the varying applied magnetic field. Such magnetic dipole reorientation causes heat to be generated in the magnetic material.

[0056] When an object is both electrically-conductive and magnetic, penetrating the object with a varying magnetic field can cause both Joule heating and magnetic hysteresis heating in the object. Moreover, the use of magnetic material can strengthen the magnetic field, which can intensify the Joule heating. Various embodiments will now be described in more detail.

[0057] Figure 1 shows a cross sectional view through a schematic representation of an aerosol provision system 1 in accordance with certain embodiments.

[0058] The aerosol provision system 1 comprises an aerosol provision device 100 and a consumable 150 comprising aerosol generating material 170. The consumable 150 is an aerosol forming article 150. The aerosol provision device 100 comprises an outer housing 105, an inhale detector 110, a controller 120, a power source 130 and an aerosol generator. The controller 120 is configured to control operation of the aerosol provision system 1 (e.g. controlling when power is supplied from the power source 130 to the aerosol generator). The aerosol generator comprises, a heating assembly comprising a magnetic field generator 160 configured to generate a varying magnetic field. The power source 130 is configured to supply electrical power for operation of the aerosol provision device 100. The outer housing 105 may also enclose at least partly components of the aerosol provision device 100, namely the controller 120, the power source 130 and the magnetic field generator 160. The aerosol provision device 100 is a handheld electronic vapour device, meaning that the outer housing 105 enclosing the other components is dimensioned and configured to be held in the hand of a user. In other words, the device is portable.

[0059] The consumable 150 comprises aerosol generating material 170 which is in the form of a solid or gel. The consumable 150 is in a rod format, and is received by a heating chamber 115 of the aerosol provision device 100. The magnetic field generator 160 is configured to cause the heating chamber 115 to become heated, and the aerosol generating material 170 of the consumable 150 within the heating chamber 115. To do this, the heating assembly comprises a heating element 165 in the consumable, having susceptor material which is susceptible to heating by penetration with a varying magnetic field generated by the magnetic field generator 160. The magnetic field generator 160 is configured to generate this varying magnetic field, which penetrates the heating chamber 115, and the heating element 165 of the consumable 150, causing it to become heated, and in turn heat the aerosol generating material 170. In this arrangement, the consumable comprises a mouthpiece 190, through which the user can draw aerosol that has been generated from the aerosol generating material 170. The aerosol provision device 100 and consumable 150 do not require respective engagement interfaces configured to enable the aerosol provision device 100 and consumable 150 to be electrically connected to one another, as an electrical connection therebetween is not used to heat the aerosol generating material 170. However, in other examples, such an interface may be required e.g. where there is a resistive heating element in the aerosol forming article. In other examples, the mouthpiece may form part of the aerosol provision device.

[0060] The inhale detector 110 is configured to detect a user inhalation on the aerosol provision device 100. In the present example, the inhalation on the aerosol provision device 100 is caused by the user inhaling on the aerosol forming article 150 via the mouthpiece 190. The inhaler detector 110 may be a pressure sensor configured to detect a pressure drop caused by the inhalation or a microphone configured to detect sound caused by the inhalation. In response to detecting the inhalation, the inhale detector 110 sends an inhalation signal to the controller 120. The controller 120 may activate the aerosol generator in response to receiving the inhalation signal and / or the inhalation being detected.

[0061] In other examples, the aerosol generator may comprise a different form of heating assembly (e.g. a resistive heater) or may generate aerosol for inhalation by a means other than heating. The aerosol generating material may be in the form of a liquid e.g. held in an aerosol forming article in the form of a cartridge receivable by the aerosol provision device.

[0062] The aerosol provision system further comprises an aroma module 200. The aroma module 200 is connected to the aerosol provision device 100, more specifically, to the outer housing 105. In the present example, the aroma module 200 is a separate component and is detachable from the aerosol provision device 100. In other examples, the aroma module 200 form part of the aerosol provision device 100 e.g. is contained within the outer housing 105. The aroma module 200 is in data communication with the controller 120.

[0063] The controller 120 is configured to control operation of the aroma module 200. The aroma module 200 is in data communication with the inhaler detector 110, in the present example via the controller 120. In other examples, the aroma module 200 may comprise the controller and / or inhale detector, or the aroma module and aerosol provision device may have a respective inhaler detector and / or controller.

[0064] The aroma module 200 is configured to receive power from the aerosol provision device 100, more specifically, to receive power from the power source 130. In other examples, the aroma module 200 may comprise a power source for providing power to the aroma module 200.

[0065] As described in more detail below, the aroma module 200 is configured to transmit an aroma towards the user. In response to detection of the inhalation by the inhale detector 110, the aroma module 200 transmits the aroma towards the user. The controller 120 controls the aroma module 200 to transmit the aroma towards the user in response to the inhalation.

[0066] The aroma module 200 is not configured to transmit the aroma for inhalation through a mouth of the user. The aroma module 200 is not configured to transmit the aroma to a mouthpiece (e.g. mouthpiece 190). The aroma module 200 is configured to transmit the aroma towards the user’s face, e.g. towards the user’s nose. The aroma module 200 is out of an inhalation flow path, with the inhalation flow path directing airflow past the aerosol generator and through the aerosol provision device 100 and / or the aerosol forming article 170.

[0067] The aroma comprises droplets mixed with air. The droplets of the aroma are configured for olfactory absorption (e.g. by the user’s nose). The droplets of the aroma have a first mean diameter, which is selected for olfactory absorption. This may be in contrast to the aerosol generated by the aerosol generator, which may be configured for pulmonary absorption e.g. comprising droplets having a second mean diameter, the second mean diameter selected for pulmonary absorption. The aroma is for providing an olfactory experience (e.g. providing an odour, a scent, a smell) to the user. As such, the aroma may not comprise an active ingredient, which may instead be provided by the aerosol. The aerosol may also provide an olfactory experience (e.g. a taste in the user’s mouth).

[0068] Figure 2 shows a cross sectional view through a schematic representation of an aroma generator 202 of the aroma module 200 when viewed from a side of the aroma module 200. As described in more detail below, in the present example the aroma generator 202 comprises a plurality of aroma generators 202. In other examples, the aroma module 200 may comprise only one aroma generator 202. In other examples, the aroma module 200 may be configured to transmit but not generate the aroma.

[0069] The aroma generator 202 comprises a blower 204. The blower 204 is configured to transmit the aroma towards the user. In the present example, the blower 204 is a microblower. In the present example, the blower 204 comprises a diaphragm pump. The blower 204 comprises a piezoelectric element to drive the blower 204. The blower 204 is configured to receive power (e.g. from the aerosol provision device 100 and / or power source 130) and to produce an airflow. The aroma generator 202 comprises an inlet 206, the inlet 206 permitting air to flow to the blower 204.

[0070] The aroma generator 202 comprises an aroma chamber 208. The aroma chamber 208 contains aroma generating material 210. The aroma generating material 210 is in the form of a capsule. In other examples, the aroma generating material 210 may be in a different form, for example in the form of a liquid (e.g. held in a porous material such as a sponge) or a powder. The aroma chamber 208 permits airflow through the aroma chamber 208 (e.g. due to the presence of inlet / outlet, or with a porous inlet and / or outlet wall) past the aroma generating material 210 to generate the aroma in the airflow. The aroma is generated without heating of the aroma generating material. The blower 204 causes air to flow through the aroma chamber 208 to generate the aroma. The aroma generator 202 comprises a cover 212. The cover 212 is movable between a closed position, in which the cover 212 covers a portion (e.g. an outlet) of the aroma chamber 208. The cover 212 is movable to open position to permit aroma to be generated. The aroma generator 202 comprises a bias element 214 to bias the cover 212 towards the closed position. Air flowing through the aroma chamber 208 causes the cover 212 to move to the open position (e.g. due to the air pushing the cover 212, which may cause the cover 212 to rotate about a hinge). The bias element 214 comprises a magnet configured to force the cover 212 (which may be made of a ferritic material) towards the closed position. The aroma generator comprises an outlet 216. The outlet 216 is positioned towards a mouth end of the aerosol provision device 100. The inlet 206 is positioned towards a distal end of the aerosol provision device 100.

[0071] In use, in response to inhalation being detected, the blower 204 activates to cause airflow through the aerosol generator 202. The blower 204 causes air to flow through the inlet 206. The blower causes air to flow through the aroma chamber 208. As air flows through the aroma chamber 208, the air picks up aroma from the aroma generating material 210 to generate aroma in the air. The air flow created by the blower 212 causes the cover 212 to open, by overcoming the bias element 214. The air comprising the aroma flows through the outlet 216 to the user, as described above.

[0072] Figure 3 shows a cross sectional view through a schematic representation of the aroma module 200 when viewed from an end of the aroma module 200 (e.g. from the mouth end of the aerosol provision device 100). The aroma module 200 comprises a plurality of aroma generators 202a-f. The aroma module 200 comprises six aroma generators 202. The aroma module 200 therefore comprises a plurality of aroma generating chambers 208, with a blower 204 for each aroma generating chamber 208. In other examples, some features of the aroma generator 202 may be common to a plurality of the aroma generating chambers (e.g. a common blower, a common inlet, a common cover and / or a common outlet). In use, the aroma generators 202a-f are configured to generate and transmit the aroma simultaneously. The aroma generators 202a-f are circumferentially distributed around the aroma module 200. The aroma generators 202a-f are positioned adjacent to each other, such that the aroma generators 202a-f transmit aroma in substantially parallel directions.

[0073] The aroma module comprises an additional blower 204g. The additional blower 204g is positioned in a central portion of the aroma module 200. The additional blower 204g comprises the same features as the blower 204 described above, but does not cause air to flow directly through an aroma generating chamber 208. The additional blower 204g contributes to transmitting the aroma generating from the aroma generating chambers towards the user.

[0074] The various embodiments described herein are presented only to assist in understanding and teaching the claimed features. These embodiments are provided as a representative sample of embodiments only, and are not exhaustive and / or exclusive. It is to be understood that advantages, embodiments, examples, functions, features, structures, and / or other aspects described herein are not to be considered limitations on the scope of the invention as defined by the claims or limitations on equivalents to the claims, and that other embodiments may be utilised and modifications may be made without departing from the scope of the claimed invention. Various embodiments of the invention may suitably comprise, consist of, or consist essentially of, appropriate combinations of the disclosed elements, components, features, parts, steps, means, etc, other than those specifically described herein. In addition, this disclosure may include other inventions not presently claimed, but which may be claimed in future.

Claims

CLAIMS1. An aerosol provision device for generating aerosol from aerosol generating material using an aerosol generator, the aerosol provision device comprising: an inhale detector, the inhale detector configured to detect an inhalation on the aerosol provision device by a user; an aroma module configured to transmit an aroma towards the user; and a controller, wherein the controller is configured, in response to detection of the inhalation by the inhale detector, to control the aroma transmitter to transmit the aroma towards the user.

2. An aerosol provision device according to claim 1, wherein the aroma module comprises a blower, the blower configured to transmit the aroma towards the user.

3. An aerosol provision device according to claim 2, wherein the blower is a microblower.

4. An aerosol provision device according to claim 2 or 3, wherein the blower comprises diaphragm pump.

5. An aerosol provision device according to any of claims 2 to 4, wherein the blower comprises a piezoelectric element, the piezoelectric element configured to drive the blower.

6. An aerosol provision device according to any of claims 2 to 5, wherein the aroma module comprises a plurality of blowers.

7. An aerosol provision device according to any of claims 1 to 6, wherein the aroma module comprises an aroma chamber, the aroma chamber configured to receive aroma generating material, wherein the aroma module is configured to generate aroma by air flowing through the aroma chamber past the aroma generating material.

8. An aerosol provision device according to claim 7, wherein the aroma chamber comprises a cover, the cover configured to close the aroma chamber when the cover is in a closed position, the cover openable from the closed position to permit generation of aroma.

9. An aerosol provision device according to claim 8, wherein the cover comprises a bias element configured to bias the cover towards the closed position, the bias element being configured to be overcome by air flowing through the aroma chamber.

10. An aerosol provision device according to any of claims 7 to 9 when dependent on claim 2, wherein the blower is configured to cause air flow through the aroma chamber.

11. An aerosol provision device according to any of claims 7 to 10 and comprising a plurality of aroma generating chambers.

12. An aerosol provision device according to claim 11 and comprising a blower for each aroma generating chamber.

13. An aerosol provision device according to claim 12 and comprising an additional blower.

14. An aerosol provision device according to any of claims 1 to 13, wherein the aroma module is configured to transmit the aroma towards the user’s nose.

15. An aerosol provision device according to any of claims 1 to 14, wherein the aroma module is not configured to transmit the aroma into the user’s mouth.

16. An aerosol provision device according to any of claims 1 to 15, wherein the the aroma module is outside an inhalation flow path, the inhalation flow path directing airflow past the aerosol generator.

17. An aerosol provision device according to any of claims 1 to 16, wherein the aroma comprises droplets having a first mean diameter, the first mean diameter selected for olfactory absorption.

18. An aerosol provision device according to any of claims 1 to 17 and comprising the aerosol generator.

19. An aerosol provision device according to claim 18, wherein the aerosol comprises droplets having a second mean diameter, the second mean diameter selected for pulmonary absorption.

20. An aerosol provision system comprising the aerosol provision device of any of claims 1 to 19 and an aerosol forming article, the aerosol forming article comprising the aerosol generating material.

21. An aroma module for an aerosol provision device, the aerosol provision device configured to generate aerosol from aerosol generating material using an aerosol generator, the aroma module configured to transmit an aroma towards the user in response to detection of an inhalation on the aerosol provision device.

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