Aerosol generating apparatus
The aerosol generating apparatus addresses the need for reduced resource usage and enhanced recyclability by integrating a visual feedback element that allows light to pass through the mouthpiece, reducing component count and improving recyclability while enhancing user feedback.
Patent Information
- Application Number
- PCT/CN2023/140926
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-06-26
AI Technical Summary
There is a need to reduce the resources and components required for aerosol generating apparatuses, while also ensuring that these devices can be disposed of or recycled responsibly at the end of their life.
The aerosol generating apparatus includes a mouthpiece, a power supply, an aerosol generating unit, a controller, and a visual feedback element that emits light towards the mouthpiece, allowing the light to pass through and exit the apparatus. This design reduces the number of electrical components and enhances recyclability.
The solution reduces the cost and complexity of manufacturing, while also improving the ease of disposal and recycling of the aerosol generating apparatus. The visual feedback element provides clear visual cues to the user, enhancing usability.
Smart Images

Figure CN2023140926_26062025_PF_FP_ABST
Abstract
Description
AEROSOL GENERATING APPARATUSField of the Invention
[0001] The present invention relates to an aerosol generating apparatus and particularly, although not exclusively, to an aerosol generating apparatus having a visual feedback element.Background
[0002] A typical aerosol generating apparatus may comprise a power supply, an aerosol generating unit that is driven by the power supply, an aerosol precursor, which in use is aerosolised by the aerosol generating unit to generate an aerosol, and a delivery system (e.g. comprising a mouthpiece) for delivery of the aerosol to a user.
[0003] A known type of aerosol generating apparatus is a disposable or single-use aerosol generating apparatus. A single-use aerosol generating apparatus may be a unitary component including all the components of the aerosol generating apparatus. For example, components commonly found in the pod of a known pod-based aerosol generating apparatus (e.g. storage portion, aerosol generating unit, mouthpiece) are fixedly attached to the components of the apparatus body (e.g. a battery, a controller, a user input) . Optionally, a single-use aerosol generating apparatus may include a storage portion which is not refillable. For example, the tank of the single-use aerosol generating apparatus may be free from an opening or aperture which would provide an access for refilling a liquid into the tank. Further, the power supply of a single-use aerosol generating apparatus may not be rechargeable. For example, a single-use aerosol generating apparatus may be free of a port for charging the power supply. The power supply of a single-use aerosol generating apparatus may be designed so that the electrical energy stored therein may be sufficient to aerosolise all the aerosol precursor in the storage portion, whilst further activation of the aerosol generating unit may not be possible due to a lack of electrical energy stored in the power supply.
[0004] In some single-use aerosol generating apparatuses, the power supply may be removable after the aerosol precursor in the storage portion is aerosolised. This may ensure that the power supply can be disposed of or recycled separately from the rest of the aerosol generating apparatus. There is a need to ensure that the resources and components required to produce aerosol generating apparatuses are reduced. Further, there is an increasing need for aerosol generating apparatuses that can be disposed of or recycled responsibly at the end of their life.
[0005] Aerosol generating apparatuses including single-use aerosol generating apparatuses are known to have one or more feedback elements configured to communicate information to the user. For example haptic feedback elements or visual feedback elements. Generally one or more visual feedback elements (e.g. lights, LEDs, screens) are provided on an outer surface of known aerosol generating apparatus, for example on or through the housing of the aerosol generating apparatus. Such visual feedback elements may provide information about the aerosol generating apparatus, such as the status of the power supply or whether the aerosol generating unit has been or is currently activated.
[0006] The present invention has been devised in light of the above considerations.Summary
[0007] At its most general, the present disclosure relates to an aerosol generating apparatus comprising a mouthpiece, a power supply, an aerosol generating unit, a controller configured to control the aerosol generating unit to generating an aerosol, and a visual feedback element configured to emit light (e.g. light visible to a user) towards the mouthpiece, wherein the mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece (e.g. one or more walls of the mouthpiece) and to exit the aerosol generating apparatus.
[0008] The aerosol generating apparatus may comprise a housing. The housing may surround the aerosol generating unit, the power supply, the controller and / or the storage portion. The mouthpiece may extend from a first end of the housing. A portion of the mouthpiece (e.g. a tail portion, see below) may be contained within the housing. A main body of the mouthpiece may be configured to interact with a user’s lips. The mouthpiece may be configured to enable light emitted from the visual feedback element to pass through the main body of the mouthpiece.
[0009] The aerosol generating apparatus may comprise a central axis extending between the first end of the housing and the second end of the housing, opposite the first end. The controller and / or the visual feedback element may be aligned with the central axis. In other embodiments, the controller and / or the visual feedback element may be offset from the central axis.
[0010] The following sets out various optional aspects of the aerosol generating apparatus. Aspects and features described herein may be optionally applicable, either alone or in combination with other aspects / features, to an aerosol generating apparatus according to the present disclosure.
[0011] In a first aspect, the controller may comprise the visual feedback element. The controller may further comprise a puff sensor. In other words, the controller and the visual feedback element (and / or the puff sensor) may be integrally formed (e.g. a unitary component) . For example, the visual feedback element and / or the puff sensor may be mounted on or in the controller. The controller may be located between the mouthpiece and the power supply. In other aspects of the present disclosure, the visual feedback element and / or the puff sensor may be separate components from the controller.
[0012] By providing an aerosol generating apparatus according to the first aspect, a single component may be provided in the aerosol generating apparatus which comprises the required / desirable electrical features of the aerosol generating apparatus (e.g. the controller, the visual feedback element, and the puff sensor) . Therefore, the number of electrical components in the aerosol generating apparatus may be reduced, in turn reducing the cost of the aerosol generating apparatus and the complexity of manufacturing the aerosol generating apparatus. Further, the ease with which the aerosol generating apparatus can be disposed of, or recycled, at the end of its life may be improved.
[0013] In some embodiments, the controller may be the only electronic component in the aerosol generating apparatus. The electrical components of the aerosol generating apparatus may consist only of the power supply, the controller (e.g. the only electronic component) , the aerosol generating unit, and the electrical connections therebetween.
[0014] The aerosol generating apparatus may comprise a storage portion. The controller may be located between the storage portion and the power supply. The storage portion may be configured to enable light emitted from the visual feedback element to pass through the storage portion towards the mouthpiece.
[0015] The storage portion may be at least partly defined by the mouthpiece.
[0016] The storage portion may contain aerosol precursor. The aerosol precursor may be configured to enable light emitted from the visual feedback element to pass through aerosol precursor towards the mouthpiece. For example, the aerosol precursor may be clear or translucent e.g. a clear or translucent liquid.
[0017] By providing the controller between the storage portion and power supply, light emitted from the visual feedback element may pass through the storage portion, allowing the user to see the contents of the storage portion more clearly. This may ensure that the user can more clearly see the amount of aerosol precursor left in the storage portion. This effect may be particularly enhanced by the aerosol precursor being translucent.
[0018] The puff sensor may face away from the storage portion. For example, the puff sensor may face towards the power supply.
[0019] By providing a puff sensor which faces away from the storage portion, detritus from the storage portion may be prevented from damaging the puff sensor. For example, in embodiments where the aerosol precursor is a fluid, damage to the puff sensor as a result of leakage from the storage portion may be reduced or avoided.
[0020] The aerosol generating apparatus may comprise a gasket located between the storage portion and the power supply. The gasket may cooperate with the housing and / or another component of the aerosol generating apparatus (such as the inner frame, see below) to seal the power supply from the storage portion. For example, the perimeter (e.g. the entire perimeter) of the gasket may abut the housing and / or the other component. In other words, the gasket may separate (e.g. seal) a portion of the housing containing the power supply from the rest of the housing (e.g. containing or partially containing the storage portion) . The gasket may be configured to house the controller.
[0021] By providing the gasket between (e.g. sealing) the storage portion and the power supply, detritus from the storage portion may be prevented from damaging the power supply. For example, in embodiments where the aerosol precursor is a fluid, damage to the power supply as a result of leakage from storage portion may be reduced or avoided.
[0022] The gasket may define a portion of the flow path (e.g. the airflow path) through the aerosol generating apparatus. For example, the gasket may comprise a flow path therethrough e.g. via one or more apertures. Further, the flow path may pass along one or more sides of the gasket e.g. a side facing the power supply or a side facing the mouthpiece.
[0023] The controller may be exposed to (e.g. located in) a flow path (e.g. an airflow path) of the aerosol generating apparatus. For example, in some embodiments, the controller may protrude into the flow path from a wall defining the flow path. In other embodiments, a first side of the controller may be exposed to the flow path e.g. define a portion of the flow path. The puff sensor may be located on the first side of the controller. In embodiments where the gasket houses the controller, the first side of the controller may be exposed to the flow path which passes along a side (e.g. the side facing the power supply) of the gasket.
[0024] By providing the controller in the flow path of the aerosol generating apparatus, the puff sensor may be exposed to the airflow within the flow path. Accordingly, the controller may operate a component of the aerosol generating apparatus (e.g. the aerosol generating unit) in response to detection of airflow in the flow path by the puff sensor.
[0025] The visual feedback element may face towards the mouthpiece e.g. towards the storage portion. The visual feedback element may be on a second side of the controller, opposite the first side of the controller. In other words, the visual feedback element may be on a side of the controller opposite the puff sensor.
[0026] The aerosol generating apparatus may comprise one or more optical paths from the visual feedback element towards the mouthpiece such that light emitted from the visual feedback element is directed towards the mouthpiece so that it can exit from the aerosol generating apparatus via the mouthpiece. In some embodiments, the one or more optical paths may be entirely within the aerosol generating apparatus. In other words, light emitted from the visual feedback element may only exit the aerosol generating apparatus via the mouthpiece. The one or more optical paths may be formed by one or more light guides. A single light guide may comprise multiple optical paths.
[0027] The aerosol generating apparatus may comprise an inner frame within the housing. The inner frame may define a portion of the flow path. The inner frame may be configured to hold the aerosol generating unit. The inner frame may comprise one or more optical paths from the visual feedback element towards the mouthpiece. In other words, the inner frame may be a light guide.
[0028] Accordingly, in a second aspect, the aerosol generating apparatus may comprise an inner frame within the housing, configured to hold the aerosol generating unit, wherein the inner frame is configured to enable the light emitted from the visual feedback element to pass through the inner frame (e.g. the material of the inner frame) towards the mouthpiece. The mouthpiece may be configured to enable the light emitted from the visual feedback element, and received via the inner frame, to pass through the mouthpiece and to exit from the aerosol generating apparatus.
[0029] By providing an aerosol generating apparatus according to the second aspect, the visual feedback element may be located within the housing (e.g. proximate other electrical components) and light emitted from the visual feedback element may be guided to the exterior of the aerosol generating apparatus via the light guide (inner frame) and the mouthpiece. The visual feedback element need not be located proximate the mouthpiece. This may improve the structure and manufacturability of the aerosol generating apparatus.
[0030] The inner frame may comprise a first end proximate the mouthpiece. The inner frame may comprise a second end opposite the first end.
[0031] The inner frame may have a transparent or translucent path / portion which is configured to enable light emitted from the visual feedback element to pass through the inner frame towards the mouthpiece. For example, the transparent or translucent path / portion may extend through the inner frame (e.g. through the length of the inner frame e.g. from the second end to the first end) . This may form a light guide. In some embodiments, the entire inner frame is translucent or transparent.
[0032] The controller may be proximate the inner frame e.g. the second end of the inner frame. The controller may be located between the inner frame and the power supply. The inner frame may be located between the controller and the mouthpiece. Further, the inner frame may be located between the controller and the storage portion.
[0033] By providing the controller (comprising the visual feedback element) between the inner frame and the power supply, the controller may be more easily connected to other electrical components in the aerosol generating apparatus (such as the power supply) .
[0034] The mouthpiece may comprise one or more optical paths through the mouthpiece (e.g. through the walls of the mouthpiece) such that light which has reached the mouthpiece from the visual feedback element may pass through the mouthpiece (e.g. the walls of the mouthpiece) and exit the aerosol generating apparatus. As a result, the mouthpiece can enable light which is emitted from the visual feedback element to pass through the mouthpiece and exit the aerosol generating apparatus. The one or more optical paths through the mouthpiece may be formed by one or more light guides. A single light guide may comprise multiple optical paths.
[0035] For example, the mouthpiece may comprise one or more translucent or transparent portions which enable light emitted from the visual feedback element to pass through the mouthpiece and to exit from the aerosol generating apparatus. The, or each, translucent or transparent portion may extend through the thickness of the mouthpiece (e.g. a wall of the mouthpiece) . In some embodiments, the entire mouthpiece is translucent or transparent. As such, all the walls of the entire mouthpiece act as a light guide.
[0036] The one or more translucent portions of the mouthpiece and / or the inner frame, the entire inner frame and / or the entire mouthpiece may have a specific opacity. For example, an opacity of between about 0%and about 90%, e.g. between about 10%and about 80%e.g. between about 20%and about 70%e.g. between about 30%and about 60%e.g. between about 40%and about 50%. Here opacity may be measured as 100%minus the transmittance of the material, where transmittance is the ratio of transmitted light to incident light (e.g. from the visual feedback element) .
[0037] The inner frame may comprise an inwardly projecting portion e.g. an inwardly curved portion. The inwardly protruding portion may be at the first end of the inner frame. The inwardly projecting portion may face towards the first end of the housing. The inwardly projecting portion may comprise one or more inwardly projecting surfaces e.g. one or more inwardly curved surfaces. The, or each, inwardly projecting surface may face towards the first end of the aerosol generating apparatus. The inwardly projecting portion may be configured to enable light emitted from the visual feedback element to pass through the inwardly projecting portion towards the mouthpiece.
[0038] By providing an inwardly projecting portion, light emitted by the visual feedback element may be better transmitted to the mouthpiece of the aerosol generating apparatus and subsequently emitted from the aerosol generating apparatus.
[0039] The inwardly projecting portion may by a concave portion. For example, the inwardly projecting surface may be a concave surface. In some embodiments, the inwardly projecting portion is a conical portion or frustoconical portion. For example, one or more of the inwardly projecting surfaces may be an inwardly extending conical surface or an inwardly extending frustoconical surface.
[0040] The inwardly projecting portion may have a rim at an outer periphery. The inwardly projecting portion (e.g. surface (s) ) may project into the inner frame from the rim. For example, the inwardly projecting surface (s) may extend away from the rim. The rim may extend (e.g. partially or entirely) around the inwardly projecting portion. For example, the rim may extend around the inwardly projecting surface. The rim may be substantially circular. The rim may be proximate (e.g. in abutment with) the housing and / or the mouthpiece. Light emitted from the visual feedback element may pass through the inner frame to the rim of the inner frame. Subsequently, the light may pass through the mouthpiece and exit the aerosol generating apparatus.
[0041] By providing an inner frame having a rim, light emitted from the visual feedback element may by visible to the user in the form of a ring or part of a ring (i.e. the same shape as the rim) as it passes through the rim of the inner frame. This may ensure that the user or others around the user can see the light emitted from the visual feedback element, regardless of the orientation of the aerosol generating apparatus.
[0042] In a third aspect, the aerosol generating apparatus may comprise a reflective surface within the housing wherein the reflective surface is configured to reflect light emitted from the visual feedback element towards the mouthpiece.
[0043] By providing an aerosol generating apparatus according to the third aspect, more light emitted from the visual feedback element may be reflected towards the mouthpiece. This may increase the intensity of light reaching the mouthpiece and subsequently exiting the aerosol generating apparatus compared to an aerosol generating apparatus not having a reflective surface. As a result, the efficiency of the visual feedback element may be improved and less light may be absorbed by the housing of the aerosol generating apparatus.
[0044] The aerosol generating apparatus may comprise more than one reflective surface as described herein.
[0045] The reflective surface may be located (at least) between the visual feedback element and the mouthpiece. The reflective surface may surround (e.g. partially or entirely) one or more components of the aerosol generating apparatus. For example, the reflective surface may surround the inner frame and / or the aerosol generating unit.
[0046] By providing the reflective surface around other components of the aerosol generating apparatus such as the aerosol generating unit, light emitted from the visual feedback element can be reflected around these components. In other words, the other components will not absorb the reflected light because they will not be in the path of the reflected light (or they will block fewer paths of reflected light) .
[0047] The reflective surface may conform to an inner surface of the housing. The reflective surface may face away from the inner surface of the housing. In other words, the reflective surface may face towards the central axis of the aerosol generating apparatus (e.g. towards the components that it surrounds) . The reflective surface may extend in a direction from the visual feedback element towards the mouthpiece, e.g. in a direction parallel to the central axis of the aerosol generating apparatus.
[0048] Advantageously, light emitted from the visual feedback element which might otherwise be absorbed by the inner surface of the housing, may be reflected away from the housing and towards the mouthpiece.
[0049] The reflective surface may be an inner surface of the housing of the aerosol generating apparatus.
[0050] By providing an inner surface of the housing that is a reflective surface, light may be reflected towards the mouthpiece from the visual feedback element without the need for an additional component in the aerosol generating apparatus. As a result, the number of components of the aerosol generating apparatus may be reduced, in turn reducing cost and complexity of manufacturing the aerosol generating apparatus.
[0051] The reflective surface may be a polished surface. For example, the inner surface of the housing may be a polished surface.
[0052] Accordingly, the reflective surface may be formed by modifying (e.g. polishing) an existing surface of the aerosol generating apparatus. This may reduce the number of components required for the aerosol generating apparatus and thus reduce cost.
[0053] As explained above, the mouthpiece may comprise a main body, configured to interact with the user’s mouth. The mouthpiece may comprise a tail portion, extending away from the main body, configured to interact with the housing to secure the mouthpiece within the housing.
[0054] The tail portion of the mouthpiece may extend within the housing (e.g. the tail portion may be contained within the housing) . The tail portion may interact with the inner surface of the housing. The tail portion may conform to the inner surface of the housing. For example, there may be an interference fit between the tail portion and the housing. The tail portion may be substantially cylindrical, particularly in embodiments where the housing is a substantially cylindrical tube.
[0055] The tail portion of the mouthpiece may conform to the reflective surface (e.g. to at least a portion of the reflective surface) . For example, at least a portion of the reflective surface may be between the tail portion of the mouthpiece and the housing. This may be achieved by the inner surface of the housing being the reflective surface. Alternatively, the reflective surface may be a separate component between the tail portion of the mouthpiece and the housing. In these embodiments, there may be an interference fit between the tail portion of the mouthpiece and the reflective surface. The tail portion may be located between the visual feedback element and the reflective surface.
[0056] The tail portion of the mouthpiece may be translucent or transparent.
[0057] In embodiments where the housing comprises a reflective surface, it is particularly advantageous that the tail portion is translucent or transparent because the tail portion may cover some or all of the reflective surface. Thus, a translucent or transparent tail portion allows light through to the reflective surface, and reflected light to pass through the tail portion towards the main body of the mouthpiece.
[0058] The mouthpiece (e.g. the tail portion of the mouthpiece) may be connected to the housing or another component of the aerosol generating apparatus via one or more connection features. The one or more connection features may be configured to interact with one or more corresponding connection features of the housing or another component of the aerosol generating apparatus. For example, the inner frame may comprise the corresponding connection feature (s) .
[0059] The visual feedback element may be located between the one or more connection features (e.g. all the connection features) and main body of the mouthpiece. In other words, the one or more connection features are spaced (e.g. are all spaced) from the visual feedback element in a direction away from the mouthpiece (e.g. towards the second end of the aerosol generating apparatus) . Alternatively, or in addition, the one or more connection features may not interfere with the optical paths from the visual feedback element to the mouthpiece. For example, the connection features may be adjacent the controller such that light emitted from the visual feedback element does not reach the connection features.
[0060] By ensuring that the connection features do not interfere with the optical paths from the visual feedback element to the main body of the mouthpiece, more light may reach the main body of the mouthpiece and be less distorted than if one or more connection features were located proximate the main body of the mouthpiece.
[0061] As explained herein, the mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus. Specifically, in some embodiments, the main body of the mouthpiece may be configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0062] The main body of the mouthpiece may be shaped to ensure light may pass through the mouthpiece with reduced distortion. Further, the main body of the mouthpiece may be shaped to ensure that a user may more easily see a component within the aerosol generating apparatus. For example, some components of the aerosol generating apparatus may be visible (or more visible) to the user when the visual feedback element is activated.
[0063] By way of example, the storage portion may be visible to the user via the mouthpiece (e.g. in embodiments where the mouthpiece defines at least part of the storage portion) . Further, the aerosol precursor contained within the storage portion may be visible to the user via the mouthpiece. Light emitted from the visual feedback element which passes through the mouthpiece and exits the aerosol generating apparatus may improve the visibility of the storage portion and / or the aerosol precursor. This may allow the user to determine the amount of aerosol precursor in the storage portion. For example, this may allow the user to determine when the storage portion is empty due to the aerosol precursor being entirely aerosolised and consumed.
[0064] Accordingly, in a fourth aspect, the mouthpiece of the aerosol generating apparatus comprises a main body configured to interact with a user’s mouth and a tail portion configured to interact with the housing to secure the mouthpiece within the housing. The main body of the mouthpiece may have a trapezium cross-section having a first base proximate the housing and a pair of base angles at the first base each having an angle between about 10 and about 80 degrees.
[0065] Accordingly, the user may be able to view a component of the aerosol generating apparatus more clearly as described herein. In particular, the user may be able to view a component of the aerosol generating apparatus more clearly when the visual feedback element is activated.
[0066] The first base of the trapezium cross-section may be proximate the housing. In other words, the base of the trapezium cross-section may be proximate the tail portion of the aerosol generating apparatus. The trapezium cross-section may comprise a second base, opposite the first base. The outlet of the aerosol generating apparatus may be proximate the first base.
[0067] The angle of each of the pair of base angles may be between about 10 and about 80 degrees, more preferably between about 15 and about 75 degrees, more preferably between about 20 and about 75 degrees, more preferably between about 30 and about 75 degrees, more preferably between about 40 degrees and about 75 degrees, more preferably between about 45 degrees and about 75 degrees, more preferably between about 50 and about 75 degrees, more preferably between about 60 and about 75 degrees, e.g. between 65 and 70 degrees e.g. 67 degrees.
[0068] The trapezium cross-section may be an isosceles trapezium cross-section.
[0069] By providing the aerosol generating apparatus where the main body of the mouthpiece has an isosceles trapezium cross-section, the user may be able to view a component of the aerosol generating apparatus via the mouthpiece in the same way from both sides of the aerosol generating apparatus.
[0070] The trapezium cross-section has two legs extending between the ends of the first and second bases. In some embodiments, one or both legs of the trapezium cross-section are inwardly curved.
[0071] By providing one or both legs of the trapezium cross-section which are inwardly curved, the mouthpiece may better conform to the user’s mouth when the aerosol generating apparatus is used to inhale aerosol. The main body of the mouthpiece (e.g. the trapezium cross-section) may have a height between about 10 mm and about 30 mm e.g. between about 20 mm and about 30 mm.
[0072] One or both of the legs of the trapezium cross-section may have a radius of curvature between about 10mm and about 35 mm e.g. between about 15 mm and about 30 mm e.g. between about 15 mm and about 20 mm.
[0073] By providing one or both legs having a radius of curvature and height as described herein, the user may be able to see a component of the aerosol generating apparatus through the mouthpiece more easily. For example, the view of the component of the aerosol generating apparatus may be less distorted than another (e.g. lower) radius of curvature whilst still ensuring that the mouthpiece is an ergonomic fit to the user’s mouth.
[0074] In order to provide a storage portion which is visible to a user as described above, the storage portion may be located proximate the mouthpiece. For example, the mouthpiece (e.g. the main body of the mouthpiece) may at least partly define the storage portion.
[0075] As such, in a fifth aspect, the mouthpiece may at least partly define a storage portion configured to contain an aerosol precursor.
[0076] By providing an aerosol generating apparatus according to the fifth aspect, the user may be able to see the amount of aerosol precursor in the storage portion more easily. This effect may be particularly enhanced by light emitted from the visual feedback element.
[0077] The housing or another component (other than the mouthpiece) may at least partly define the storage portion. In some embodiments, the inner frame (e.g. the inwardly projecting portion of the inner frame) and the mouthpiece define the storage portion.
[0078] For example, the mouthpiece (e.g. the main body of the mouthpiece) may define a first part of the storage portion. The housing may define a second part of the storage portion. The first part of the storage portion and the second part of the storage portion may completely form the storage portion. Alternatively, or in addition, another component of the aerosol generating apparatus may define the second part of the storage portion. For example, the inner frame, e.g. the inwardly projecting portion of the inner frame, may define the second part of the storage portion. Thus, the storage portion may be defined by the inner frame and the mouthpiece.
[0079] In some embodiments, the storage portion may comprise a wick, configured to transfer liquid from the storage portion to the aerosol generating unit. The wick may be contained entirely within the second part of the storage portion. In other words, the wick does not extend into the first part of the storage portion. The storage portion may only contain the wick and one or more fluids (e.g. the aerosol precursor and / or air) . The first part of the storage portion may be configured to only contain one or more fluids (e.g. the aerosol precursor and / or air) . In other words, the first part of the storage portion may be devoid of solid matter (e.g. a wick) e.g. it may be devoid of any material other than one or more fluids.
[0080] By providing a first part of the storage portion, defined by the mouthpiece, and devoid of any material other than fluid (e.g. aerosol precursor and / or air) , the user may be able to see into the storage portion more clearly via the mouthpiece and thus see the amount of aerosol precursor within the storage portion.
[0081] The storage portion may be located between the visual feedback element and the mouthpiece.
[0082] By providing the storage portion between the visual feedback element and the mouthpiece, the storage portion may be illuminated by the visual feedback element such that a user may view the contents of the storage portion (e.g. the aerosol precursor) via the mouthpiece.
[0083] The controller of the aerosol generating apparatus may be configured to activate and deactivate the aerosol generating unit. In addition, the controller may be configured to control the visual feedback element. For example, the visual feedback element may be configured to change between multiple states e.g. from a first state to a second state. A state of the visual feedback may be: the visual feedback element not emitting light (e.g. being off) , the visual feedback element emitting light (e.g. being on) , the visual feedback element emitting a colour, and / or the visual feedback element emitting a series of pulses (e.g. having different lengths and / or having different durations between pulses) .
[0084] In a sixth aspect, the controller is configured to change a state of the visual feedback element when the controller activates the aerosol generating unit.
[0085] Thus, visual feedback element may provide the user with an indication of when the aerosol generating unit is activated by the controller via the mouthpiece.
[0086] In some embodiments, the controller is configured to simultaneously activate the aerosol generating unit and change a state of the visual feedback element. As used herein, simultaneously means within about 0.5 seconds such that the user perceives the visual feedback element to change state at the same time as the aerosol generating unit.
[0087] The controller may be configured to change the state of the visual feedback element when the controller deactivates the aerosol generating unit. For example, in some embodiments, the controller is configured to simultaneously change the state of the visual feedback element and deactivate the aerosol generating unit.
[0088] In embodiments comprising a puff sensor, the controller may be configured to activate and / or deactivate the aerosol generating unit in response to a signal from the puff sensor. Further, the controller may be configured to change a state of the visual feedback element in response to a signal from the puff sensor.
[0089] The controller may be configured to activate the aerosol generating unit for a fixed period of time and subsequently deactivate the aerosol generating unit.
[0090] The invention includes the combination of the aspects and preferred features described except where such a combination is clearly impermissible or expressly avoided.
[0091] Summary of the Figures
[0092] Aspects, features and advantages of the present disclosure will become apparent from the following description of examples in reference to the appended drawings in which like numerals denote like elements.
[0093] Figure 1. is a block system diagram showing an example aerosol generating apparatus.
[0094] Figure 2. is a block system diagram showing an example implementation of the apparatus of Figure 1, where the aerosol generating apparatus is configured to generate aerosol from a liquid precursor.
[0095] Figure 3a and 3b. are schematic diagrams showing an example implementation of the apparatus of Figure 2.
[0096] Figure 4. is a perspective view of an aerosol generating apparatus.
[0097] Figure 5. is a cross-section view of the aerosol generating apparatus is Figure 4.
[0098] Figure 6. shows a cross-section view of the aerosol generating apparatus is Figures 4 and 5 where all components except the mouthpiece and the inner frame are removed for clarity.
[0099] Figure 7. shows a perspective view of the mouthpiece of the aerosol generating apparatus shown in Figures 4, 5 and 6.
[0100] Figure 8. shows a cross-section view of the mouthpiece shown in Figure 7.
[0101] Figure 9. shows a diagram representing the operation of the aerosol generating unit and the feedback element within the aerosol generating apparatus.Detailed Description
[0102] Before describing several examples implementing the present disclosure, it is to be understood that the present disclosure is not limited by specific construction details or process steps set forth in the following description and accompanying drawings. Rather, it will be apparent to those skilled in the art having the benefit of the present disclosure that the systems, apparatuses and / or methods described herein could be embodied differently and / or be practised or carried out in various alternative ways.
[0103] Unless otherwise defined herein, scientific and technical terms used in connection with the present disclosure shall have the meanings that are commonly understood by those of ordinary skill in the art, and known techniques and procedures may be performed according to conventional methods well known in the art and as described in various general and more specific references that may be cited and discussed in the present specification.
[0104] Any patents, published patent applications, and non-patent publications mentioned in the specification are hereby incorporated by reference in their entirety.
[0105] All examples implementing the present disclosure can be made and executed without undue experimentation in light of the present disclosure. While particular examples have been described, it will be apparent to those of skill in the art that variations may be applied to the systems, apparatus, and / or methods and in the steps or in the sequence of steps of the methods described herein without departing from the concept, spirit, and scope of the inventive concept (s) . All such similar substitutions and modifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the inventive concept (s) as defined by the appended claims.
[0106] The use of the term “a” or “an” in the claims and / or the specification may mean “one, ” as well as “one or more, ” “at least one, ” and “one or more than one. ” As such, the terms “a, ” “an, ” and “the, ” as well as all singular terms, include plural referents unless the context clearly indicates otherwise. Likewise, plural terms shall include the singular unless otherwise required by context. Ranges may be expressed herein as from “about” or “approximately” one particular value, and / or to “about” or “approximately” another particular value. When such a range is expressed, another embodiment includes from the one particular value and / or to the other particular value. Similarly, when values are expressed as approximations, by the use of the antecedents “about” or “approximately” it will be understood that the particular value forms another embodiment. The terms “about” or “approximately” in relation to a numerical value are optional and mean, for example, + / -10%.
[0107] The use of the term “or” in the present disclosure (including the claims) is used to mean an inclusive “and / or” unless explicitly indicated to refer to alternatives only or unless the alternatives are mutually exclusive. For example, a condition “A or B” is satisfied by any of the following: A is true (or present) and B is false (or not present) , A is false (or not present) and B is true (or present) , and both A and B are true (or present) .
[0108] As used in this specification and claim (s) , the words “comprising, “having, ” “including, ” or “containing” (and any forms thereof, such as “comprise” and “comprises, ” “have” and “has, ” “includes” and “include, ” or “contains” and “contain, ” respectively) are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.
[0109] Unless otherwise explicitly stated as incompatible, or the physics or otherwise of the embodiments, examples, or claims prevent such a combination, the features of examples disclosed herein, and of the claims, may be integrated together in any suitable arrangement, especially ones where there is a beneficial effect in doing so. This is not limited to only any specified benefit, and instead may arise from an “ex post facto” benefit. This is to say that the combination of features is not limited by the described forms, particularly the form (e.g. numbering) of example (s) , embodiment (s) , or dependency of claim (s) . Moreover, this also applies to the phrase “in one embodiment, ” “according to an embodiment, ” and the like, which are merely a stylistic form of wording and are not to be construed as limiting the following features to a separate embodiment to all other instances of the same or similar wording. This is to say, a reference to ‘an, ’ ‘one, ’ or ‘some’ embodiment (s) may be a reference to any one or more, and / or all embodiments, or combination (s) thereof, disclosed. Also, similarly, the reference to “the” embodiment may not be limited to the immediately preceding embodiment. Further, all references to one or more embodiments or examples are to be construed as non-limiting to the claims.
[0110] The present disclosure may be better understood in view of the following explanations, wherein the terms used that are separated by “or” may be used interchangeably:
[0111] As used herein, an "aerosol generating apparatus" (or “electronic (e) -cigarette” ) may be an apparatus configured to deliver an aerosol to a user for inhalation by the user. The apparatus may additionally / alternatively be referred to as a “smoking substitute apparatus” , if it is intended to be used instead of a conventional combustible smoking article. As used herein a combustible “smoking article” may refer to a cigarette, cigar, pipe or other article, that produces smoke (an aerosol comprising solid particulates and gas) via heating above the thermal decomposition temperature (typically by combustion and / or pyrolysis) . An aerosol generated by the apparatus may comprise an aerosol with particle sizes of 0.2 -7 microns, or less than 10 microns, or less than 7 microns. This particle size may be achieved by control of one or more of: heater temperature; cooling rate as the vapour condenses to an aerosol; flow properties including turbulence and velocity. The generation of aerosol by the aerosol generating apparatus may be controlled by an input device. The input device may be configured to be user-activated, and may, for example, include or take the form of an actuator (e.g. actuation button) and / or an airflow sensor (e.g. a puff sensor) .
[0112] Each occurrence of the aerosol generating apparatus being caused to generate aerosol for a period of time (which may be variable) may be referred to as an “activation” of the aerosol generating apparatus or aerosol generating unit. In other words, the aerosol generating apparatus or aerosol generating unit may be “activated” to cause aerosol to be generated. The aerosol generating apparatus may be arranged to allow an amount of aerosol delivered to a user to be varied per activation (as opposed to delivering a fixed dose of aerosol) , e.g. by activating an aerosol generating unit of the apparatus for a variable amount of time, e.g. based on the strength / duration of a draw of a user through a flow path of the apparatus (to replicate an effect of smoking a conventional combustible smoking article) .
[0113] The aerosol generating apparatus may be portable. As used herein, the term "portable" may refer to the apparatus being for use when held by a user.
[0114] As used herein, an "aerosol" may include a suspension of precursor, including as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. An aerosol herein may generally refer to / include a vapour. An aerosol may include one or more components of the precursor.
[0115] As used herein, a “precursor” or “aerosol precursor” may include one or more of a: liquid; solid; gel; loose leaf material; other substance. The precursor may be processed by an aerosol generating unit of an aerosol generating apparatus to generate an aerosol. The precursor may include one or more of: an active component; a carrier; a flavouring. The active component may include one or more of nicotine; caffeine; a cannabidiol oil; a non-pharmaceutical formulation, e.g. a formulation which is not for treatment of a disease or physiological malfunction of the human body. The active component may be carried by the carrier, which may be a liquid, including propylene glycol and / or glycerine. The term “flavouring” may refer to a component that provides a taste and / or a smell to the user. The flavouring may include one or more of: Ethylvanillin (vanilla) ; menthol, Isoamyl acetate (banana oil) ; or other. The precursor may include a substrate, e.g. reconstituted tobacco to carry one or more of the active component; a carrier; a flavouring.
[0116] As used herein, a "flow path" may refer to a path or enclosed passageway through an aerosol generating apparatus, e.g. for delivery of an aerosol to a user. The flow path may be arranged to receive aerosol from an aerosol generating unit. When referring to the flow path, upstream and downstream may be defined in respect of a direction of flow in the flow path, e.g. with an outlet being downstream of an inlet.
[0117] As used herein, a "delivery system" may be a system operative to deliver an aerosol to a user. The delivery system may include a mouthpiece and a flow path.
[0118] As used herein, a "flow" may refer to a flow in a flow path. A flow may include aerosol generated from the precursor. The flow may include air, which may be induced into the flow path via a puff by a user.
[0119] As used herein, a “puff” (or "inhale" or “draw” ) by a user may refer to expansion of lungs and / or oral cavity of a user to create a pressure reduction that induces flow through the flow path.
[0120] As used herein, an "aerosol generating unit" may refer to a device configured to generate an aerosol from a precursor. The aerosol generating unit may include a unit to generate a vapour directly from the precursor (e.g. a heating system or other system) or an aerosol directly from the precursor (e.g. an atomiser including an ultrasonic system, a flow expansion system operative to carry droplets of the precursor in the flow without using electrical energy or other system) . A plurality of aerosol generating units to generate a plurality of aerosols (for example, from a plurality of different aerosol precursors) may be present in an aerosol generating apparatus.
[0121] As used herein, a “heating system” may refer to an arrangement of at least one heating element, which is operable to aerosolise a precursor once heated. The at least one heating element may be electrically resistive to produce heat from the flow of electrical current therethrough. The at least one heating element may be arranged as a susceptor to produce heat when penetrated by an alternating magnetic field. The heating system may be configured to heat a precursor to below 300 or 350 degrees C, including without combustion.
[0122] As used herein, a "consumable" may refer to a unit that includes a precursor. The consumable may include an aerosol generating unit, e.g. it may be arranged as a cartomizer. The consumable may include a mouthpiece. The consumable may include an information carrying medium. With liquid or gel implementations of the precursor, e.g. an e-liquid, the consumable may be referred to as a “capsule” or a “pod” or an “e-liquid consumable” . The capsule / pod may include a storage portion, e.g. a reservoir or tank, for storage of the precursor. With solid material implementations of the precursor, e.g. tobacco or reconstituted tobacco formulation, the consumable may be referred to as a “stick” or “package” or “heat-not-burn consumable” . In a heat-not-burn consumable, the mouthpiece may be implemented as a filter and the consumable may be arranged to carry the precursor. The consumable may be implemented as a dosage or pre-portioned amount of material, including a loose-leaf product.
[0123] As used herein, an "information carrying medium" may include one or more arrangements for storage of information on any suitable medium. Examples include: a computer readable medium; a Radio Frequency Identification (RFID) transponder; codes encoding information, such as optical (e.g. a bar code or QR code) or mechanically read codes (e.g. a configuration of the absence or presents of cut-outs to encode a bit, through which pins or a reader may be inserted) .
[0124] As used herein “heat-not-burn” (or “HNB” or “heated precursor” ) may refer to the heating of a precursor, typically tobacco, without combustion, or without substantial combustion (i.e. localised combustion may be experienced of limited portions of the precursor, including of less than 5%of the total volume) .
[0125] As used herein, "electrical features" may refer to one or more electrical components or sub-components, examples of which may include: an Application Specific Integrated Circuit (ASIC) ; electronic / electrical componentry (which may include combinations of transistors, resistors, capacitors, inductors etc) ; one or more processors; a non-transitory memory (e.g. implemented by one or more memory devices) , that may store one or more software or firmware programs; a combinational logic circuit; interconnection of the aforesaid. The electrical circuitry may be located entirely at the apparatus, or distributed between the apparatus and / or on one or more external devices in communication with the apparatus.
[0126] Referring to Figure 1, an example aerosol generating apparatus 1 includes a power supply 2, for supply of electrical energy. The apparatus 1 includes an aerosol generating unit 4 that is driven by the power supply 2. The power supply 2 may include an electrical power supply in the form of a battery and / or an electrical connection to an external power source. The apparatus 1 includes a precursor 6, which in use is aerosolised by the aerosol generating unit 4 to generate an aerosol. The apparatus 2 includes a delivery system 8 for delivery of the aerosol to a user.
[0127] Electrical circuitry (not shown in Figure 1) may be implemented to control the interoperability of the power supply 4 and aerosol generating unit 6.
[0128] In variant examples, which are not illustrated, the power supply 2 may be omitted since, e.g. an aerosol generating unit implemented as an atomiser with flow expansion may not require a power supply.
[0129] Figure 2 shows an implementation of the apparatus 1 of Figure 1, where the aerosol generating apparatus 1 is configured to generate aerosol from a liquid precursor. Figure 2 is an example of a pod-based system.
[0130] In this example, the apparatus 1 includes an apparatus body 10 and a consumable 30.
[0131] In this example, the body 10 includes the power supply 2. The body may additionally include any one or more of electrical circuitry 12, a memory 14, a wireless interface 16, one or more other components 18.
[0132] The electrical circuitry 12 may include a processing resource for controlling one or more operations of the body 10 and consumable 30, e.g. based on instructions stored in the memory 14. In other words, the apparatus body 10 may comprise a controller.
[0133] The wireless interface 16 may be configured to communicate wirelessly with an external (e.g. mobile) device, e.g. via Bluetooth.
[0134] The other component (s) 18 may include one or more user interface devices configured to convey information to a user and / or a charging port, for example (see e.g. Figure 3) .
[0135] The consumable 30 includes a storage portion implemented here as a tank 32 which stores the liquid precursor 6 (e.g. e-liquid) . The consumable 30 also includes a heating system 34 which is an aerosol generating unit, one or more air inlets 36, and a mouthpiece 38. The consumable 30 may include one or more other components 39.
[0136] The body 10 and consumable 30 may each include a respective electrical interface (not shown) to provide an electrical connection between one or more components of the body 10 with one or more components of the consumable 30. In this way, electrical power can be supplied to components (e.g. the heating system 34) of the consumable 30, without the consumable 30 needing to have its own power supply.
[0137] In use, a user may activate the aerosol generating apparatus 1 when inhaling through the mouthpiece 38, i.e. when performing a puff. The puff, performed by the user, may initiate a flow through a flow path in the consumable 30 which extends from the air inlet (s) 34 to the mouthpiece 38 via a region in proximity to the heating system 34.
[0138] Activation of the aerosol generating apparatus 1 may be initiated, for example, by an airflow sensor (e.g. a puff sensor) in the body 10 which detects airflow in the aerosol generating apparatus 1 (e.g. caused by a user inhaling through the mouthpiece) , or by actuation of an actuator included in the body 10. Upon activation, the electrical circuitry 12 (e.g. under control of the processing resource) may supply electrical energy from the power supply 239 to the heating system 34 which may cause the heating system 32 to heat liquid precursor 6 drawn from the tank to produce an aerosol which is carried by the flow out of the mouthpiece 38.
[0139] In some examples, the heating system 34 may include a heating filament and a wick, wherein a first portion of the wick extends into the tank 32 in order to draw liquid precursor 6 out from the tank 32, wherein the heating filament coils around a second portion of the wick located outside the tank 32. The heating filament may be configured to heat up liquid precursor 6 drawn out of the tank 32 by the wick to produce the aerosol.
[0140] In this example, the aerosol generating unit 4 is provided by the above-described heating system 34 and the delivery system 8 is provided by the above-described flow path and mouthpiece 38.
[0141] In variant embodiments (not shown) , any one or more of the precursor 6, heating system 34, air inlet (s) 36 and mouthpiece 38, may be included in the body 10. For example, the mouthpiece 36 may be included in the body 10 with the precursor 6 and heating system 32 arranged as a separable cartomizer.
[0142] Figures 3A and 3B show an example implementation of the aerosol generating apparatus 1 of Figure 2. In this example, the consumable 30 is implemented as a capsule / pod, which is shown in Figure 3A as being physically coupled to the body 10, and is shown in Figure 3B as being decoupled from the body 10.
[0143] Figures 3A and 3B are an example of a pod-based system.
[0144] In this example, the body 10 and the consumable 30 are configured to be physically coupled together by pushing the consumable 30 into an aperture in a top end 11 the body 10, with the consumable 30 being retained in the aperture via an interference fit.
[0145] In other examples (not shown) , the body 10 and the consumable 30 could be physically coupled together in other ways, e.g. by screwing one onto the other, through a bayonet fitting, or through a snap engagement mechanism, for example.
[0146] The body 10 also includes a charging port (not shown) at a bottom end 13 of the body 10.
[0147] The body 10 also includes a user interface device configured to convey information to a user. Here, the user interface device is implemented as a visual feedback element e.g. a light 15, which may e.g. be configured to illuminate when the apparatus 1 is activated. Other user interface devices are possible, e.g. to convey information haptically or audibly to a user.
[0148] In this example, the consumable 30 has an opaque cap 31, a translucent tank 32 and a translucent window 33. When the consumable 30 is physically coupled to the body 10 as shown in Fig. 3A, only the cap 31 and window 33 can be seen, with the tank 32 being obscured from view by the body 10. The body 10 includes a slot 15 to accommodate the window 33. The window 33 is configured to allow the amount of liquid precursor 6 in the tank 32 to be visually assessed, even when the consumable 30 is physically coupled to the body 10.
[0149] Figures 4 and 5 show an aerosol generating apparatus 40, which may be implemented in any of the preceding examples. The aerosol generating apparatus 40 is configured to generate aerosol from a liquid precursor.
[0150] The aerosol generating apparatus 40 includes a housing 42. A mouthpiece 44 is attached to the housing 42.The aerosol generating apparatus 40 is a single-use apparatus, therefore the entire apparatus may be considered the apparatus body referred to in previous examples.
[0151] The aerosol generating apparatus 40 includes a storage portion contained within the housing 42 and the mouthpiece 44. The storage portion is implemented here as a tank 46 which is configured to store a liquid aerosol precursor (e.g. e-liquid) .
[0152] The aerosol generating apparatus 40 includes an aerosol generating unit housed in the housing 42. The aerosol generating unit is implemented here as a heating system 48. In this example, the heating system 48 includes a resistive heater.
[0153] The aerosol generating apparatus 40 includes a power supply. The power supply is implemented here as a battery 50.
[0154] The device housing 42 includes an air inlet 52 at a bottom end 54 (also referred to herein as the second end) of the aerosol generating apparatus 40. In use, air is drawn into the device housing 42 and flows along an inlet flow path 56 to the aerosol generating unit, e.g. by passing around or passing through components housed in the housing 42.
[0155] From the aerosol generating unit, the air flows along an outlet flow path 58 to exit the aerosol generating apparatus 40 at an outlet 59 of the mouthpiece 44.
[0156] The aerosol generating apparatus 40 includes a controller 60, configured to control the aerosol generating unit to generate an aerosol. This is implemented here by the controller 60 being configured to activate and deactivate the heating system 48 to aerosolise the aerosol generating precursor which is transported from the tank 46 to the heating system 48 via a wick (not shown) . The controller 60 is located between the mouthpiece 44 and the power supply 50. More specifically, the controller 60 is located between the tank 46 and the power supply 50. The controller 60 is offset from the central axis 90 of the aerosol generating apparatus 40.
[0157] The controller comprises a visual feedback element implemented here as an LED 62 which faces towards the mouthpiece 44. The LED 62 is positioned on a top side (also referred to herein as the second side) of the controller 60.
[0158] The controller 60 also comprises a puff sensor 64 (also referred to as an airflow sensor) . The puff sensor 64 may be a pressure sensor which detects a pressure change (e.g. a pressure drop) . The puff sensor 64 is located on a bottom side (also referred to herein as the first side) of the controller 60 so that it faces away from the tank 46 and towards the power supply 50.
[0159] The aerosol generating apparatus 40 further includes an inner frame 70 located between the power supply 50 and the mouthpiece 44. The inner frame 70 is located within the housing 42 and holds / supports the heating system 48 such that the heating system 48 is aligned with a central axis 90 of the aerosol generating apparatus 40. Further, in the embodiment shown in Figures 4 and 5, the inner frame 70 provides a convoluted portion of the inlet flow path 56 proximate the heating system 48.
[0160] The aerosol generating apparatus 40 also includes a gasket 72 located between the tank 46 and the power supply 50. The gasket 72 sits within the housing 42 at the bottom (also referred to herein as the second end) of the inner frame 70. The gasket 72 cooperates with the inner frame 70 in order to seal the power supply 50 from the tank 46 and the heating system 48. As shown in Figure 5, the perimeter of the gasket 72 abuts the inner frame 70 in order to separate the portion of the housing 42 containing the power supply 50 from the portion of the housing 42 containing the inner frame 70, the heating system and the tank 46. A portion of the inlet flow path 56 is provided in the gasket 72 in the form of an aperture 74 extending through the gasket 72 in a direction substantially parallel with the central axis 90 of the aerosol generating apparatus 40.
[0161] The gasket 72 houses the controller 60. The bottom side of the gasket 72 defines a portion of the inlet flow path 56. Further, the bottom side of the gasket 72 partly defines a cavity 73. The controller is positioned in the gasket such that the bottom side of the controller is exposed to the cavity 73 and thus the inlet flow path 56. This ensures that the puff sensor 64 can detect the flow of air in the inlet flow path 56 when a user inhales on the mouthpiece 44 of the aerosol generating apparatus.
[0162] Light is transmitted from the LED 62 to the mouthpiece 44 and out of the aerosol generating apparatus 40. To achieve this, inner frame 70 acts as a light guide from the LED 62 to the mouthpiece 44. Specifically, the inner frame 70 is substantially transparent (e.g. a transparent plastic) . Further, to ensure light can exit the mouthpiece 44, the mouthpiece is translucent so that light from the LED 62, received via the inner frame 70, can pass through the mouthpiece 44. In the embodiment shown in Figures 4 and 5, the tank 46 is formed by the inner frame 70 and the mouthpiece 44 (see below) . Accordingly, the tank 46 (i.e. the storage portion) is also configured to enable light emitted from the visual feedback element to pass through the storage portion towards the mouthpiece 44. To increase the amount of light emitted from the aerosol generating apparatus 40 via the mouthpiece, the aerosol precursor may be a transparent or translucent liquid.
[0163] As shown in Figures 4 and 5, there are no optical paths from the LED 62 to the exterior of the aerosol generating apparatus 40 which does not pass through the mouthpiece 44. The only optical paths available to the light emitted from the LED 62 is through the inner frame 70 which acts as a light guide, and subsequently through the mouthpiece 44 (specifically the walls of the mouthpiece 44) . To achieve this, in the example shown, the housing 42 is opaque. Further the housing lacks any other hole or transparent / translucent feature.
[0164] The housing 42 has an inner surface 43. The inner surface 43 is a reflective surface. Light from the LED 62 which is incident on the reflective surface may be reflected away from the housing 42 and towards the mouthpiece 44. The inner surface 43 extends entirely round the housing 42 and extends the entire length of the housing 42. The reflective inner surface 43 is formed by polishing the inner surface 43 of the housing 42.
[0165] Figure 6 shows a cross section of the aerosol generating apparatus in Figures 4 and 5. In Figure 6, all components other than the mouthpiece 44 and the inner frame 70 are removed for clarity. The inner frame 70 comprises an inwardly projecting portion 76 having a frustoconical surface 78 at a first end of the inner frame 70 proximate the outlet 59. This inwardly projecting portion 76 defines a part of the tank 46 (e.g. a second part 46b, see below) together with the inner walls of the mouthpiece 44 which define a first part 46a of the tank 46 (see below) . Accordingly, the tank 46 is defined by the inner frame 70 and the mouthpiece 44.
[0166] The inwardly projecting portion 76 has a rim 77 which is circular and extends around the outer periphery of the inwardly projecting portion 76. The rim 77 is in abutment with the mouthpiece 44. When light emitted from the LED 62 passes through the inner frame 70, some light is guided to the rim 77 which travels through the mouthpiece 44 proximate the rim 77. Accordingly, the rim 77 is lit up by the light from the LED 62 and the user sees a ring of light, corresponding to the rim 77, through the mouthpiece 44.
[0167] The tank 46 can be considered to have a first part 46a defined by the main body 80 of the mouthpiece 44 and a second part 46b defined by the inwardly projecting portion 76 of the inner frame 70. The boundary between the first part 46a and the second part 46b is a plane which is parallel to the rim 77 of the inner frame 70 (ahorizontal plane in Figure 6) . The wick (not shown) may be located at the bottom of the second part 46b. The first part 46a is configured to contain only fluid (aerosol precursor and / or air) . In other words, in use, the wick will not extend into the first part 46a of the tank 46.
[0168] Figure 7 shows a perspective view of the mouthpiece 44 of the aerosol generating apparatus 40 shown in Figures 4 and 5.
[0169] As explained above, the mouthpiece 44 comprises an outlet 59 which is located at the top of a main body 80 of the mouthpiece 44. The main body 80 is configured to interact with the user’s mouth. The mouthpiece comprises a tail portion 82 which extends away from the main body 80 in a direction away from the outlet 59. The tail portion 82 is configured to interact with the housing 42 to secure the mouthpiece 44 within the housing 42. Specifically, the tail portion 82 is a substantially cylindrical tube portion. As shown in Figure 4, in the aerosol generating apparatus 40, the tail portion 82 extends into the housing 42 and conforms to the inner surface 43 of the housing 42 so that there is an interference fit between the housing 42 and the inner surface 43.
[0170] Returning to Figure 7, the tail portion 82 comprises a connection feature 84. The connection feature 84 is configured to connect the mouthpiece 44 to the rest of the aerosol generating apparatus 40. The mouthpiece 44 has a second connection feature 85 opposite the connection feature 84 shown in Figure 7 which can be seen in Figures 4, 5 and 8. In the embodiment shown in Figure 4, the connection features 84, 85 interact with corresponding connection features on the inner frame 70 such that the mouthpiece 44 is secured to the aerosol generating apparatus 40. As seen in Figure 4, the connection features 84, 85 are adjacent the controller 60. In other words, the connection features 84, 85 and the controller may be located at substantially the same distance between the power supply 50 and the tank 46. As a result, light emitted from the LED 62 will not be distorted by the connection features 84, 85 as it will not be incident on the connection features 84, 85. The portion of the inner frame 70 and the portion of the gasket 72 between the LED 62 and the connection features 84, 85 also ensures that light from the LED 62 will not be incident on the connection features 84, 85.
[0171] Figure 8 shows a cross-section of the mouthpiece 44 shown in Figure 7.
[0172] As shown in Figure 8, the main body 80 of the mouthpiece 44 has a cross-section which has a trapezium shape as indicated roughly by the dashed lines to assist the reader. The trapezium cross-section has a first base 101 proximate the tail portion 82 (which in use, is proximate the housing 42) , and a second base 102 proximate the outlet 59. The pair of base angles A at the first base are equal (so that the trapezium shape is an isosceles trapezium cross-section) and have an angle A of about 70 degrees. As used herein, base angles are measured between the base 101 and a line connecting the corresponding ends of the first base 101 and the second base 102. The legs of the trapezium shape 103, 104 which extend between the first and second bases are inwardly curved. The radius of curvature of the inward curve of the legs is about 15 mm and the height of the trapezium (measured perpendicularly between the first base and the second base) is about 20 mm.
[0173] Figure 9 shows the operation of the aerosol generating unit and the visual feedback element of an exemplary aerosol generating apparatus according to the present disclosure. The aerosol generating unit and the visual feedback element of any of the preceding examples may be operated in this way.
[0174] The controller 60 activates the aerosol generating unit at a time t1 (201 in Figure 9) . The controller changes a state of the visual feedback element from a first state (state 1) to a second state (state 2) when the aerosol generating unit is activated (e.g. at time t1 or after time t1) . In Figure 9, the visual feedback element changes from the first state to the second state at time t1 (e.g. simultaneously with the activation of the aerosol generating unit) . See 301 in Figure 9. By way of example, the visual feedback element changes state from a first state in which the visual feedback element does not emit light, to a second state in which the visual feedback element emits light. In other embodiments, the first state, and / or the second state, could be different as described herein.
[0175] The aerosol generating unit is activated for a fixed period of time th in which the aerosol precursor in the storage portion is aerosolised and delivered to the user via the mouthpiece 44 (see 202 in Figure 9) . The controller 60 deactivates the aerosol generating unit at time t1+th (see 203 in Figure 9) . In some embodiments, the controller is configured to change the state of the visual feedback element (e.g. from the second state to the first state) simultaneously e.g. at time t1+th (see 303 in Figure 9) . In other embodiments, indicated by the dashed line in Figure 9, the visual feedback element may change state at a time after t1+th (e.g. t2, see 304 in Figure 9) . The visual feedback element may change back to its original state as shown in the example of Figure 9. Alternatively, the controller may change the state of the visual feedback element from a second state to a third state, different from the first state and the second state. The third state may result in the visual feedback element emitting light of a different colour to the light emitted in the second state, or could be another state as described herein.
[0176] The controller 60 is configured to receive a signal from the puff sensor 64. The controller 60 is configured to activate the aerosol generating unit in response to the signal from the puff sensor 64 and to change a state of the visual feedback element in response to the signal from the puff sensor 64. In the example shown in Figure 9, the signal from the puff sensor 64 is received at or just before time t1.
[0177] Disclosed herein is an aerosol generating apparatus comprising a mouthpiece, a power supply, an aerosol generating unit, a controller configured to control the aerosol generating unit, and a visual feedback element configured to emit light towards the mouthpiece, wherein the mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus. Advantageous optional features of the aerosol generating apparatus are also presented, and the following numbered clauses present some preferred optional arrangements of the aerosol generating apparatus.
[0178] Numbered clauses
[0179] 1. An aerosol generating apparatus comprising:
[0180] a housing;
[0181] a mouthpiece;
[0182] a power supply;
[0183] an aerosol generating unit; and
[0184] a controller configured to control the aerosol generating unit to generate an aerosol, the controller located between the mouthpiece and the power supply,
[0185] wherein:
[0186] the controller comprises a puff sensor and a visual feedback element configured to emit light towards the mouthpiece, and
[0187] the mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0188] 2. The aerosol generating apparatus according to clause 1 comprising a storage portion, wherein the controller is located between the storage portion and the power supply, and the storage portion is configured to enable light emitted from the visual feedback element to pass through the storage portion towards the mouthpiece.
[0189] 3. The aerosol generating apparatus according to clause 2 wherein the storage portion is at least partly defined by the mouthpiece.
[0190] 4. The aerosol generating apparatus according to clause 2 or clause 3 wherein the storage portion is formed by a first part and a second part, the mouthpiece defines the first part of the storage portion, and the first part of the storage portion is devoid of any material other than one or more fluids.
[0191] 5. The aerosol generating apparatus according to any one of clauses 2 to 4 wherein the puff sensor faces away from the storage portion.
[0192] 6. The aerosol generating apparatus according to any one of clauses 2 to 5, comprising a gasket located between the storage portion and the power supply and configured to house the controller, wherein the gasket cooperates with the housing to seal the power supply from the storage portion.
[0193] 7. The aerosol generating apparatus according to any one of clauses 1 to 6 wherein the controller is exposed to a flow path of the aerosol generating apparatus.
[0194] 8. The aerosol generating apparatus according to any one of clauses 1 to 7 comprising: an inner frame within the housing configured to hold the aerosol generating unit, wherein the inner frame is configured to enable light emitted from the visual feedback element to pass through the inner frame towards the mouthpiece.
[0195] 9. The aerosol generating apparatus according to any one of clauses 1 to 8 wherein the mouthpiece comprises a translucent or transparent portion which enables light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0196] 10. The aerosol generating apparatus according to any one of clauses 1 to 9 comprising a reflective surface within the housing, wherein the reflective surface is configured to reflect light emitted from the visual feedback element towards the mouthpiece.
[0197] 11. The aerosol generating apparatus according to clause 10 wherein the reflective surface is an inner surface of the housing.
[0198] 12. The aerosol generating apparatus according to any one of clauses 1 to 11 wherein the mouthpiece comprises a main body configured to interact with a user’s mouth and a tail portion configured to interact with the housing to secure the mouthpiece within the housing, and the main body has a trapezium cross-section having a first base proximate the housing and a pair of base angles at the first base, each having an angle between about 10 and about 80 degrees.
[0199] 13. The aerosol generating apparatus according to clause 12 wherein one or both legs of the trapezium cross-section are inwardly curved.
[0200] 14. The aerosol generating apparatus according to any one of clauses 1 to 13 wherein the controller is configured to change a state of the visual feedback element when the controller activates the aerosol generating unit.
[0201] 15. The aerosol generating apparatus according to any one of clauses 1 to 14 wherein the controller is configured to change a state of the visual feedback element when the controller deactivates the aerosol generating unit.
[0202] 16. An aerosol generating apparatus comprising:
[0203] a housing;
[0204] a mouthpiece;
[0205] a power supply;
[0206] an aerosol generating unit;
[0207] a controller configured to control the aerosol generating unit to generate an aerosol; and
[0208] an inner frame within the housing configured to hold the aerosol generating unit,
[0209] wherein:
[0210] the controller comprises a visual feedback element configured to emit light towards the mouthpiece,
[0211] the inner frame is configured to enable light emitted from the visual feedback element to pass through the inner frame towards the mouthpiece, and
[0212] the mouthpiece is configured to enable light emitted from the visual feedback element, and received via the inner frame, to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0213] 17. The aerosol generating apparatus according to clause 16 wherein the inner frame is located between the controller and the mouthpiece.
[0214] 18. The aerosol generating apparatus according to clause 16 or 17 wherein the mouthpiece comprises a translucent or transparent portion which enables light emitted from the visual feedback element to pass through the mouthpiece and to exit from the aerosol generating apparatus.
[0215] 19. The aerosol generating apparatus according to any one of clauses 16 to 18 wherein the entire mouthpiece is translucent or transparent.
[0216] 20. The aerosol generating apparatus according to any one of clauses 16 to 19 wherein the inner frame comprises an inwardly projecting portion at a first end of the inner frame proximate the mouthpiece, and the inwardly projecting portion is configured to enable light emitted from the visual feedback element to pass through the inwardly projecting portion towards the mouthpiece.
[0217] 21. The aerosol generating apparatus according to clause 20 wherein the inwardly projecting portion comprises a rim at an outer periphery, the rim being proximate the mouthpiece.
[0218] 22. The aerosol generating apparatus according to clause 20 or clause 21 wherein the inwardly projecting portion comprises a frustoconical surface.
[0219] 23. The aerosol generating apparatus according to any one of clauses 16 to 22 wherein the controller is located between the mouthpiece and the power supply.
[0220] 24. The aerosol generating apparatus according to any one of clauses 16 to 23 wherein the controller comprises a puff sensor.
[0221] 25. The aerosol generating apparatus according to any one of clauses 16 to 24 comprising a reflective surface within the housing, wherein the reflective surface is configured to reflect light emitted from the visual feedback element towards the mouthpiece.
[0222] 26. The aerosol generating apparatus according to clause 25 wherein the reflective surface is an inner surface of the housing.
[0223] 27. The aerosol generating apparatus according to any one of clauses 16 to 26 wherein the mouthpiece comprises a main body configured to interact with a user’s mouth and a tail portion configured to interact with the housing to secure the mouthpiece within the housing, and the main body has a trapezium cross-section having a first base proximate the housing and a pair of base angles at the first base, each having an angle between about 10 and about 80 degrees.
[0224] 28. The aerosol generating apparatus according to clause 27 wherein one or both legs of the trapezium cross-section are inwardly curved.
[0225] 29. The aerosol generating apparatus according to any one of clauses 16 to 28 wherein the controller is configured to change a state of the visual feedback element when the controller activates the aerosol generating unit.
[0226] 30. The aerosol generating apparatus according to any one of clauses 16 to 29 wherein the controller is configured to change a state of the visual feedback element when the controller deactivates the aerosol generating unit.
[0227] 31. An aerosol generating apparatus comprising:
[0228] a housing;
[0229] a mouthpiece;
[0230] a power supply;
[0231] an aerosol generating unit;
[0232] a controller configured to control the aerosol generating unit to generate an aerosol; and
[0233] a reflective surface within the housing,
[0234] wherein:
[0235] the controller comprises a visual feedback element configured to emit light towards the mouthpiece,
[0236] the reflective surface is configured to reflect light emitted from the visual feedback element towards the mouthpiece, and
[0237] the mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0238] 32. The aerosol generating apparatus according to clause 31 wherein the reflective surface surrounds the aerosol generating unit.
[0239] 33. The aerosol generating apparatus according to clause 31 or 32 comprising an inner frame within the housing configured to hold the aerosol generating unit, wherein the reflective surface surrounds the inner frame.
[0240] 34. The aerosol generating apparatus according to clause 33 wherein the inner frame is configured to enable light emitted from the visual feedback element to pass through the inner frame towards the mouthpiece.
[0241] 35. The aerosol generating apparatus according to any one of clauses 31 to 34 wherein the reflective surface extends in a direction from the visual feedback element towards the mouthpiece.
[0242] 36. The aerosol generating apparatus according to any one of clauses 31 to 35 wherein the reflective surface is an inner surface of the housing.
[0243] 37. The aerosol generating apparatus according to any one of clauses 31 to 36 wherein the reflective surface is a polished surface.
[0244] 38. The aerosol generating apparatus according to any one of clauses 31 to 37 wherein the controller is located between the mouthpiece and the power supply.
[0245] 39. The aerosol generating apparatus according to any one of clauses 31 to 38 wherein the controller comprises a puff sensor.
[0246] 40. The aerosol generating apparatus according to any one of clauses 31 to 39 wherein the mouthpiece comprises a translucent or transparent portion which enables light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0247] 41. The aerosol generating apparatus according to any one of clauses 31 to 40 wherein the mouthpiece comprises a main body configured to interact with a user’s mouth and a tail portion configured to interact with the housing to secure the mouthpiece within the housing, and the main body has a trapezium cross-section having a first base proximate the housing and a pair of base angles at the first base, each having an angle between about 10 and about 80 degrees.
[0248] 42. The aerosol generating apparatus according to clause 41 wherein one or both legs of the trapezium cross-section are inwardly curved.
[0249] 43. The aerosol generating apparatus according to any one of clauses 31 to 42 wherein controller is configured to change a state of the visual feedback element when the controller activates the aerosol generating unit.
[0250] 44. The aerosol generating apparatus according to any one of clauses 31 to 43 wherein the controller is configured to change a state of the visual feedback element when the controller deactivates the aerosol generating unit.
[0251] 45. An aerosol generating apparatus comprising:
[0252] a housing;
[0253] a mouthpiece comprising a main body configured to interact with a user’s mouth and a tail portion configured to interact with the housing to secure the mouthpiece within the housing;
[0254] a power supply;
[0255] an aerosol generating unit;
[0256] a controller configured to control the aerosol generating unit to generate an aerosol,
[0257] wherein:
[0258] the controller comprises a visual feedback element configured to emit light towards the mouthpiece,
[0259] the mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus, and
[0260] the main body has a trapezium cross-section having a first base proximate the housing and a pair of base angles at the first base each having an angle between about 10 and about 80 degrees.
[0261] 46. The aerosol generating apparatus according to clause 45 wherein the pair of base angles at the first base each have an angle between about 60 and about 75 degrees.
[0262] 47. The aerosol generating apparatus according to clause 45 or clause 46 wherein the trapezium cross-section is an isosceles trapezium cross-section.
[0263] 48. The aerosol generating apparatus according to any one of clauses 45 to 47 wherein one or both legs of the trapezium cross-section are inwardly curved.
[0264] 49. The aerosol generating apparatus according to any one of clauses 45 to 48 wherein one or both legs of the trapezium cross-section have a radius of curvature between about 10 mm and about 35 mm.
[0265] 50. The aerosol generating apparatus according to clause 49 wherein one or both legs of the trapezium cross-section have a radius of curvature between about 10 mm and about 20 mm.
[0266] 51. The aerosol generating apparatus according to any one of clauses 45 to 50 wherein the mouthpiece at least partly defines a storage portion configured to contain aerosol precursor.
[0267] 52. The aerosol generating apparatus according to any one of clauses 45 to 51 wherein the controller is located between the mouthpiece and the power supply.
[0268] 53. The aerosol generating apparatus according to any one of clauses 45 to 52 wherein the controller comprises a puff sensor.
[0269] 54. The aerosol generating apparatus according to any one of clause 45 to 53 comprising: an inner frame within the housing configured to hold the aerosol generating unit, wherein the inner frame is configured to enable light emitted from the visual feedback element to pass through the inner frame towards the mouthpiece.
[0270] 55. The aerosol generating apparatus according to clause 54 wherein the inner frame at least partly defines a storage portion configured to contain aerosol precursor.
[0271] 56. The aerosol generating apparatus according to any one of clauses 44 to 55 wherein the mouthpiece comprises a translucent or transparent portion which enables light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0272] 57. The aerosol generating apparatus according to any one of clauses 44 to 56 comprising a reflective surface within the housing, wherein the reflective surface is configured to reflect light emitted from the visual feedback element towards the mouthpiece.
[0273] 58. The aerosol generating apparatus according to clause 57 wherein the reflective surface is an inner surface of the housing.
[0274] 59. The aerosol generating apparatus according to any one of clauses 45 to 58 wherein the controller is configured to change a state of the visual feedback element when the controller activates the aerosol generating unit.
[0275] 60. The aerosol generating apparatus according to any one of clauses 45 to 59 wherein the controller is configured to change a state of the visual feedback element when the controller deactivates the aerosol generating unit.
[0276] 61. An aerosol generating apparatus comprising:
[0277] a housing;
[0278] a mouthpiece;
[0279] a power supply;
[0280] an aerosol generating unit; and
[0281] a controller configured to control the aerosol generating unit to generate an aerosol,
[0282] wherein:
[0283] the controller comprises a visual feedback element configured to emit light towards the mouthpiece, the mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus, and
[0284] the controller is configured to change a state of the visual feedback element when the controller activates the aerosol generating unit.
[0285] 62. The aerosol generating apparatus according to clause 61 wherein the controller is configured to simultaneously change the state of the visual feedback element and activate the aerosol generating unit.
[0286] 63. The aerosol generating apparatus according to clause 61 or 62 wherein the controller is configured to change the state of the visual feedback element when the controller deactivates the aerosol generating unit.
[0287] 64. The aerosol generating apparatus according to clause 63 wherein the controller is configured to simultaneously change the state of the visual feedback element and deactivate the aerosol generating unit.
[0288] 65. The aerosol generating apparatus according to any one of clauses 61 to 64 comprising a puff sensor, wherein the controller is configured to activate the aerosol generating unit and change a state of the visual feedback element in response to a signal from the puff sensor.
[0289] 66. The aerosol generating apparatus according to clauses 61 to 65 wherein the controller comprises the puff sensor.
[0290] 67. The aerosol generating apparatus according to any one of clauses 61 to 66 wherein the controller is configured to activate the aerosol generating unit for a fixed period of time and subsequently deactivate the aerosol generating unit.
[0291] 68. The aerosol generating apparatus according to any one of clauses 61 to 67 wherein the controller is located between the mouthpiece and the power supply.
[0292] 69. The aerosol generating apparatus according to any one of clauses 61 to 68 comprising: an inner frame within the housing configured to hold the aerosol generating unit, wherein the inner frame is configured to enable light emitted from the visual feedback element to pass through the inner frame towards the mouthpiece.
[0293] 70. The aerosol generating apparatus according to any one of clauses 61 to 69 wherein the mouthpiece comprises a translucent or transparent portion which enables light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.
[0294] 71. The aerosol generating apparatus according to any one of clauses 61 to 70 comprising a reflective surface within the housing, wherein the reflective surface is configured to reflect light emitted from the visual feedback element towards the mouthpiece.
[0295] 72. The aerosol generating apparatus according to clause 71 wherein the reflective surface is an inner surface of the housing.
[0296] 73. The aerosol generating apparatus according to any one of clauses 61 to 72 wherein the mouthpiece comprises a main body configured to interact with a user’s mouth and a tail portion configured to interact with the housing to secure the mouthpiece within the housing, and the main body has a trapezium cross-section having a first base proximate the housing and a pair of base angles at the first base, each having an angle between about 10 and about 80 degrees.
[0297] 74. The aerosol generating apparatus according to clause 73 wherein one or both legs of the trapezium cross-section are inwardly curved.
Claims
1.An aerosol generating apparatus comprising:a housing;a mouthpiece;a power supply;an aerosol generating unit; anda controller configured to control the aerosol generating unit to generate an aerosol, the controller located between the mouthpiece and the power supply,wherein:the controller comprises a puff sensor and a visual feedback element configured to emit light towards the mouthpiece, andthe mouthpiece is configured to enable light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.2.The aerosol generating apparatus according to claim 1 comprising a storage portion, wherein the controller is located between the storage portion and the power supply, and the storage portion is configured to enable light emitted from the visual feedback element to pass through the storage portion towards the mouthpiece.3.The aerosol generating apparatus according to claim 2 wherein the storage portion is at least partly defined by the mouthpiece.4.The aerosol generating apparatus according to claim 2 or claim 3 wherein the storage portion is formed by a first part and a second part, the mouthpiece defines the first part of the storage portion, and the first part of the storage portion is devoid of any material other than one or more fluids.5.The aerosol generating apparatus according to any one of claims 2 to 4 wherein the puff sensor faces away from the storage portion.6.The aerosol generating apparatus according to any one of claims 2 to 5, comprising a gasket located between the storage portion and the power supply and configured to house the controller, wherein the gasket cooperates with the housing to seal the power supply from the storage portion.7.The aerosol generating apparatus according to any one of claims 1 to 6 wherein the controller is exposed to a flow path of the aerosol generating apparatus.8.The aerosol generating apparatus according to any one of claims 1 to 7 comprising:an inner frame within the housing configured to hold the aerosol generating unit, wherein the inner frame is configured to enable light emitted from the visual feedback element to pass through the inner frame towards the mouthpiece.9.The aerosol generating apparatus according to any one of claims 1 to 8 wherein the mouthpiece comprises a translucent or transparent portion which enables light emitted from the visual feedback element to pass through the mouthpiece and to exit the aerosol generating apparatus.10.The aerosol generating apparatus according to any one of claims 1 to 9 comprising a reflective surface within the housing, wherein the reflective surface is configured to reflect light emitted from the visual feedback element towards the mouthpiece.11.The aerosol generating apparatus according to claim 10 wherein the reflective surface is an inner surface of the housing.12.The aerosol generating apparatus according to any one of claims 1 to 11 wherein the mouthpiece comprises a main body configured to interact with a user’s mouth and a tail portion configured to interact with the housing to secure the mouthpiece within the housing, and the main body has a trapezium cross-section having a first base proximate the housing and a pair of base angles at the first base, each having an angle between about 10 and about 80 degrees.13.The aerosol generating apparatus according to claim 12 wherein one or both legs of the trapezium cross-section are inwardly curved.14.The aerosol generating apparatus according to any one of claims 1 to 13 wherein the controller is configured to change a state of the visual feedback element when the controller activates the aerosol generating unit.15.The aerosol generating apparatus according to any one of claims 1 to 14 wherein the controller is configured to change a state of the visual feedback element when the controller deactivates the aerosol generating unit.
Citation Information
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