Aerosol generating apparatus
The aerosol generating apparatus addresses the challenge of sustainable disposal by incorporating an openable battery compartment and electrically passive end cap assembly, enhancing recyclability and safety while allowing for battery replacement.
Patent Information
- Application Number
- PCT/CN2023/140953
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-06-26
AI Technical Summary
Existing aerosol generating apparatuses face challenges in sustainable disposal due to the inability to separate components effectively for different waste streams, leading to inefficiencies in recycling and potential safety hazards.
The aerosol generating apparatus features a body with an openable battery compartment and an electrically passive end cap assembly, allowing for the separate disposal of the battery and other components, enhancing recyclability and safety.
This design enables improved recyclability and safety by allowing the battery to be directed to a separate waste stream, while also extending the apparatus's longevity through battery replacement.
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Figure CN2023140953_26062025_PF_FP_ABST
Abstract
Description
AEROSOL GENERATING APPARATUSFIELD
[0001] The present disclosure relates to an aerosol generating apparatus.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 for delivery of the aerosol to a user. A drawback with known aerosol generating apparatuses arises upon disposal at end of life. For example, different components of an aerosol generating apparatus should preferably be directed to different waste streams for more sustainable disposal. In spite of the effort already invested in the development of aerosol generating apparatuses / systems further improvements are desirable.SUMMARY
[0003] In a first aspect, the present disclosure provides an aerosol generating apparatus comprising a body having a base end and a mouthpiece end. The body comprises a battery compartment having an opening at the base end of the body for insertion and / or removal of a battery from the battery compartment. The body further comprises an end cap assembly for closing the opening to the battery compartment, the end cap assembly being releasably attached to the body. The end cap assembly is electrically passive.
[0004] In some embodiments, the battery compartment may be accessed via the opening by releasing the end cap assembly from the body. The opening is configured such that a battery can be inserted into the battery compartment and / or removed from the battery compartment through the opening. For example, the opening may have a size and shape commensurate with that of the battery to be inserted in the battery compartment.
[0005] Providing an apparatus with an openable battery compartment can enable the battery to be removed from the apparatus. This may allow, for example, improved recyclability or disposal of the apparatus by enabling the battery to be disposed of separately from the apparatus. Safety of the apparatus following disposal may also be enhanced, by allowing the battery to be directed to a separate (e.g. dedicated) waste stream. Providing an openable battery compartment may also improve the longevity of the apparatus by enabling the battery to be replaced, for example in a situation where the battery degrades more rapidly than other elements of the apparatus.
[0006] The end cap assembly is electrically passive, in that the end cap assembly does not form part of any electrical circuits of the aerosol generating apparatus. For example, an electrical connection to a battery located in the battery compartment does not pass through the end cap assembly. No electrical connection is provided between the end cap assembly and the body. The end cap assembly is electrically isolated from the body. Attachment of the end cap assembly to the body may be simplified, since no electrical connection needs to be formed between the end cap assembly and the body. The end cap assembly contains no electrical components. For example, electrical components such as a heater of an aerosol generating unit or an airflow sensor are provided in the body of the aerosol generating apparatus and not in the end cap assembly. In this way, manufacture of the end cap assembly may be simplified. In some examples, the end cap assembly is formed from electrically insulative material, for example a plastic.
[0007] The apparatus may be elongate, with a longitudinal axis and a transverse axis.
[0008] The apparatus may comprise an aerosol generating unit for generating an aerosol from a precursor. In some examples, the aerosol generating unit is operable to generate aerosol from a liquid precursor. In some of those examples, the aerosol generating unit comprises a wick and a heater element. In other examples, the aerosol generating unit is operable to generate aerosol from a solid precursor. In some of those examples, the aerosol generating unit comprises a heater.
[0009] In some examples, the end cap assembly is rotatable relative to the body to release the end cap assembly from the body.
[0010] A rotatable end cap assembly provides an example mechanism by which the end cap assembly is attached to and released from the body. Use of rotation to release the end cap assembly from the body may reduce accidental release of the end cap assembly from the body, since rotation of elements of the apparatus relative to each other may not form part of the normal range of motions of a user during usage of the apparatus.
[0011] The end cap assembly may be attached to the body via a bayonet attachment mechanism. The bayonet attachment mechanism may comprise a peg arranged to interconnect with a channel. The bayonet attachment mechanism may comprise a plurality of pegs arranged to interconnect with corresponding number of channels.
[0012] A bayonet attachment mechanism is an example of a rotatable connection between an end cap assembly and a body.
[0013] The peg (s) may be provided on the end cap assembly. The peg (s) may extend transversely outward from a part of the end cap assembly. The channel (s) may be provided on an inner wall of the opening of the battery compartment. Alternatively, the channel (s) may be provided on the end cap assembly, and the peg (s) may be provided on the body. For example, the peg (s) may extend radially inward from the inner wall of the opening of the battery compartment.
[0014] The channel (s) may be L-shaped. The channel (s) may each comprise a circumferentially extending first channel portion and a longitudinally extending second channel portion, as viewed with respect to the apparatus. In such examples, the end cap assembly may be released from the bayonet attachment mechanism by first rotating the end cap assembly to move the peg (s) along the first channel portion (s) , and then moving the end cap assembly longitudinally away from the body to move the pegs along the second channel portion (s) . The end cap assembly may be twisted with respect to the body to effect the rotation. The end cap assembly may be pulled with respect to the body to effect the longitudinal movement.
[0015] The end cap assembly may be attached to the body via a reverse of this process. The attachment process thereby includes a longitudinal movement of the end cap assembly towards the body of the apparatus, and a rotation of the end cap assembly with respect to the body. The end cap assembly may be pushed into the opening of the battery compartment to effect this longitudinal movement. The end cap assembly may be twisted with respect to the body to effect this rotation.
[0016] The first channel portion (s) may comprise a retaining mechanism for retaining the peg (s) in the first channel portion (s) . A detent is an example of retaining mechanism. The provision of a retaining mechanism can require a threshold force to be applied to the end cap assembly to overcome the retaining mechanism. This may thereby reduce a chance of unwanted release of the end cap assembly from the body. A retaining mechanism may be provided in each of the first channel portion (s) . A retaining mechanism may be provided in only a subset of the first channel portion (s) .
[0017] The second channel potion (s) may comprise a chamfered opening. In other words, a mouth of the second channel portion (s) may be wider than another part of the second channel portion (s) . The mouth of each second channel portion is the opening of the second channel portion into which the peg (s) are first inserted. Providing a chamfered opening of the second channel portion may simplify insertion of the peg (s) into the second channel portion (s) , for example when assembling the device or when replacing the end cap assembly.
[0018] In some examples, the body comprises a housing formed as a tube. The tube may have a constant cross-sectional shape and area along its longitudinal extent. The tube may be formable via an extrusion process. In some examples, the tube may have a circular cross section. In some examples, the tube is formed from a metal, for example Aluminium. In other examples, the tube is formed from a plastic.
[0019] Providing a body formed from a tube can ease manufacture of the apparatus. In some examples, it may allow components of the apparatus to be slidably received in the tube housing to assemble the apparatus. Providing a housing that can be formed by an extrusion process may reduce cost and complexity of manufacturing the housing and hence the apparatus.
[0020] The aerosol generating apparatus may comprise a connecting assembly to which the end cap assembly may be connected. The connecting assembly may be mounted in a base end of the housing. For example, the connecting assembly may be slidably received in a base end of the housing. The connecting assembly may be connected to the housing via a friction fit. The connecting assembly may be connected to the housing via an adhesive. The connecting assembly can therefore connect the end cap assembly to the body. In some examples, the connecting assembly is electrically passive. In such examples, the connecting assembly does not form part of any electrical circuits of the aerosol generating apparatus. For example, an electrical connection to a battery located in the battery compartment does not pass through the connecting assembly. No electrical connection is provided between the connecting assembly and the body. No electrical connection is provided between the connecting assembly and the end cap assembly. The connecting assembly is electrically isolated from the body. Attachment of the connecting assembly to the body may be simplified, since no electrical connection needs to be formed between the connecting assembly and the body. The connecting assembly contains no electrical components. For example, electrical components such as a heater of an aerosol generating unit or an airflow sensor are provided in the body of the aerosol generating apparatus and not in the connecting assembly. In this way, manufacture of the connecting assembly may be simplified. In some examples, the connecting assembly is formed from electrically insulative material, for example a plastic.
[0021] Where a bayonet connection is used to connect the end cap assembly to the body, the channel (s) or the peg (s) may be provided on the connecting assembly.
[0022] Providing a connecting assembly to connect the end cap assembly to the body may mean that the housing is simplified. In other words, no channel (s) or peg (s) need be provided on the body because the channel (s) or peg (s) can instead be provided on the connecting assembly.
[0023] In some examples, the end cap assembly may be mushroom shaped. The end cap assembly may comprise a shaft portion for insertion into the body, and a lip portion for covering a base end of the body. The lip portion may thereby prevent the end cap assembly from being inserted too far into the body. By covering a base end of the body, the lip portion may also present a smoother end profile of the apparatus. For example, where the body comprises a housing, a base end of a wall of the housing may have a sharp edge, and the lip portion may protect a user from this sharp edge.
[0024] The lip portion of the end cap assembly may comprise a gripping portion. A knurled portion of an outer surface of the lip portion is an example of a gripping portion. Providing a gripping portion may assist a user in rotating the end cap assembly with respect to the body. Therefore, a gripping portion may increase the ease of releasing the end cap assembly from the apparatus. Similarly, a gripping portion may increase the ease of connecting the end cap assembly to the apparatus. In some examples, the gripping portion is provided around the full periphery of the end cap assembly. In some other examples, the gripping portion is provided around only a portion of the periphery of the end cap assembly. In some embodiments, the gripping portion is provided as a plurality of separate gripping portion sections disposed around the periphery of the end cap assembly.
[0025] The end cap assembly may comprise an air inlet of the aerosol generating apparatus. An airflow passage may extend from the air inlet and through the apparatus to an air outlet. The air outlet may be provided on a mouthpiece of the apparatus.
[0026] Providing an air inlet via the end cap assembly may avoid the need to provide an air inlet through the wall of the body. This may simplify manufacture of the body.
[0027] The air inlet may be arranged on a base surface of the end cap assembly. A user of the apparatus may thus be less likely to block the air inlet during usage. For example, the base surface of the end cap assembly may fall outside the part of the apparatus that a user would be expected to hold when using the apparatus.
[0028] The air inlet may be an annular air inlet. This may provide an increased surface area of the air inlet, allowing improved air flow and reduced chance of fouling of the air inlet.
[0029] In some examples, the end cap assembly may comprise a seal assembly. The seal assembly may be operable to block the airflow passage through the apparatus. The seal assembly may thereby prevent air from being drawn through the airflow passage of the apparatus.
[0030] An airflow sensor may be provided in fluidic communication with the airflow passage. The airflow sensor may thus be operable to detect an airflow in the airflow passage. The airflow sensor may be operably connected to an aerosol generating unit of the apparatus. The apparatus may be operable to generate an aerosol based on detection of an airflow in the airflow passage. For example, the aerosol may be generated only while an airflow is detected in the airflow passage. In this way, when the seal assembly is arranged to block the airflow passage, the apparatus may be temporarily prevented from generating an aerosol. The seal assembly thus acts as a mechanical switch for switching between a state of the apparatus wherein an aerosol is generated when a user draws on the air outlet and a state of the apparatus where aerosol is not generated when a user draws on the air outlet.
[0031] The seal assembly may be rotatable between a position where the airflow passage is blocked and a position where the airflow passage is not blocked. The force required to rotate the seal assembly may be lower than the force required to rotate the end cap assembly to remove the end cap assembly from the apparatus. In this way, a possibility of inadvertent removal of the end cap assembly when attempting to control the seal assembly is reduced.
[0032] In some examples, the apparatus includes a bias mechanism located in the battery compartment and configured to urge a battery in the battery compartment towards the opening. The bias mechanism may thus assist a user in removing the battery from the battery compartment. The bias mechanism may also reduce movement (e.g. vibration) of a battery in the battery compartment when the end cap assembly is in place. For example, the battery may be urged against the end cap assembly to reduce movement of the battery.
[0033] The bias mechanism may comprise first and second sprung apparatus electrodes for electrically connecting a battery to an aerosol generating unit of the aerosol generating apparatus. Sprung apparatus electrodes may also increase manufacturing tolerance for the apparatus by enabling the electrodes to adapt to a wider range of battery positions within the battery compartment (e.g. a wider range of longitudinal positions) .
[0034] The apparatus may comprise a battery located in the battery compartment. The battery may be operable to supply power to the aerosol generating unit.
[0035] In some examples, the battery is mechanically attached to the end cap assembly. This may simplify removing the battery from the battery compartment. Having a battery attached to the end cap assembly may enable a user to use the end cap assembly to remove the battery from the battery compartment. The battery may be attached to the end cap assembly via an attachment clip. The battery may be releasably or non-releasably attached to the end cap assembly. Where the battery is releasably attached to the end cap assembly, the battery can be released from the end cap assembly, for example after removal from the battery compartment. Where the battery is non-releasably attached to the end cap assembly, the battery cannot be released from the end cap assembly.
[0036] The battery may comprise a top face located towards a mouthpiece end of the battery compartment when the battery is located in the battery compartment. The battery may comprise first and second battery electrodes arranged on the top face of the battery. Providing both the first and second battery electrodes on the same end face of the battery, with this end face being located towards the mouthpiece end (i.e. top end) of the battery compartment may avoid a requirement for the end cap assembly to form part of an electrical connection between the battery and the aerosol generating unit of the apparatus. This may simplify the end cap assembly and, if present, the connecting assembly by avoiding a need to provide an electrical interface between these components.
[0037] The first and second battery electrodes may be rotationally symmetric about a longitudinal axis of the battery. In this way, the battery may remain electrically connected to the battery electrodes if the battery is rotated within the battery compartment.
[0038] In some examples, the first battery electrode is a circular electrode arranged centrally on the top face of the battery. The first battery electrode may be an annular electrode. These arrangements are examples of a rotationally symmetric first battery electrode.
[0039] In some examples, the second battery electrode is an annular electrode arranged about the first battery electrode on the top face of the battery. This is an example of a rotationally symmetric second electrode.
[0040] The battery may comprise a raised annular insulator arranged between the first battery electrode and the second battery electrode on the top face of the battery. The annular insulator is raised in the sense that it protrudes from the top face of the battery. In particular, the insulator may protrude further from the top face of the battery than either the first battery electrode or the second battery electrode. This can protect the battery against shorting with another battery or electrically conductive debris, for example in a waste or recycling plant. This may avoid the risk of a shorting battery causing a fire. The raised insulator may also serve to prevent the first and second apparatus electrodes from connecting incorrectly to the first and second battery electrodes.
[0041] The apparatus may comprise a retaining element for retaining the end cap assembly to the body when the end cap assembly is released from the body. For example, the retaining element may be a strap, ribbon or thread of flexible material. A first end of the retaining element may be attached to the end cap assembly. A second end of the retaining element may be attached to the body or to the connecting assembly. The retaining element may allow the end cap assembly to move only a limited distance from the body when released from the body. Provision of such a retaining element may prevent loss of the end cap assembly when released from the body. It may also allow for improved disposal of the apparatus by allowing the body and end cap assembly to be disposed of as a single unit.
[0042] The retaining element may be attached to the end cap assembly via a rotatable connection. The retaining element may thereby permit rotation of the end cap assembly with respect to the body of the apparatus.
[0043] The aerosol generating apparatus may be a single-use or disposable aerosol generating apparatus. A single-use aerosol generating apparatus is a particular form of aerosol generating apparatus which includes a non-refillable and non-replaceable source of aerosol precursor. This is in contrast to aerosol generating apparatuses that include replaceable or refillable sources of aerosol precursor. In such examples, the apparatus is disposed of once the supply aerosol precursor is exhausted. For example, a disposable aerosol generating apparatus operable to generate aerosol from a liquid precursor may comprise a sealed reservoir. The sealed reservoir may be integral with a body of the apparatus. A single-use aerosol generating apparatus may include no provision for charging the battery, and / or may comprise a non-rechargeable battery.
[0044] According to a second aspect, a method of disposal of an aerosol generating apparatus is provided. The aerosol generating apparatus comprises a body having a base end and a mouthpiece end. The body comprises a battery compartment having an opening at the base end of the body for insertion and / or removal of a battery from the battery compartment. A battery is located in the battery compartment. The apparatus further comprises an end cap assembly for closing the opening to the battery compartment, the end cap assembly being releasably attached to the body. The method comprises steps of releasing the end cap assembly from the body; and removing the battery from the power supply cavity.
[0045] In some examples, the method comprises a step of detaching the battery from the end cap assembly. In some examples, the method comprises a step of directing the body to a first waste stream, and directing the battery to a second waste stream.
[0046] A waste stream refers to a category into waste may be separated. For example, separate waste streams may be processed differently during a waste disposal or a recycling process. In some embodiments, the first waste stream is a general waste stream. In some embodiments, the second waste stream is a battery recycling waste stream.
[0047] The preceding summary is provided for purposes of summarizing some examples to provide a basic understanding of aspects of the subject matter described herein. Accordingly, the above-described features should not be construed to narrow the scope or spirit of the subject matter described herein in any way. Moreover, the above and / or proceeding examples may be combined in any suitable combination to provide further examples, except where such a combination is clearly impermissible or expressly avoided. Other features, aspects, and advantages of the subject matter described herein will become apparent from the following text and the accompanying drawings.
[0048] BRIEF DESCRIPTION OF THE FIGURES
[0049] 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.
[0050] Fig. 1 is a block system diagram showing an example aerosol generating apparatus.
[0051] Fig. 2 is a block system diagram showing an example implementation of the apparatus of Fig. 1, where the aerosol generating apparatus is configured to generate aerosol from a liquid precursor.
[0052] Figs. 3A and 3B are schematic diagrams showing an example implementation of the apparatus of Fig. 2.
[0053] Fig. 4 is a block system diagram showing an example implementation of the apparatus of Fig. 1, where the aerosol generating apparatus is configured to generate aerosol from a solid precursor.
[0054] Fig. 5 is a schematic diagram showing an example implementation of the apparatus of Fig. 4.
[0055] Fig. 6 is a schematic diagram showing a section view through an aerosol generating apparatus.
[0056] Fig. 7 is a schematic diagram showing detail of an attachment mechanism between an end cap assembly and a body of an aerosol generating apparatus.
[0057] Fig. 8 is a schematic diagram showing an example end cap assembly with an attached battery.
[0058] Fig. 9 is a schematic diagram showing an example battery.
[0059] Fig. 10 is a flowchart of a method of disposal of an aerosol generating apparatus.
[0060] Figs. 11A, 11B and 11C are a block diagram of combinations of apparatus components for disposal.
[0061] Fig. 12 is a flowchart of a method of replacing a battery of an aerosol generating apparatus.
[0062] Fig. 13 is an exploded diagram of an end cap assembly of an aerosol generating apparatus.
[0063] Fig. 14 is a schematic diagram of a mounting plate of an end cap assembly.
[0064] Fig. 15 is a schematic diagram of a seal assembly.
[0065] Fig. 16 is a schematic diagram of an aerosol generating apparatus.
[0066] Fig. 17 is a cut-through diagram of an aerosol generating apparatus showing an airflow path.
[0067] Fig. 18 is a schematic diagram of a seal.
[0068] Fig. 19 is a schematic diagram of a seal.
[0069] Figs. 20A and 20B are a schematic diagram of a seal assembly.
[0070] Figs. 21A and 21B are a schematic diagram of a seal assembly.
[0071] Fig. 22 is a flowchart illustrating a method of using an aerosol generating apparatus.DETAILED DESCRIPTION OF EMBODIMENTS
[0072] Before describing 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 practiced or carried out in various alternative ways.
[0073] Unless otherwise defined herein, scientific and technical terms used in connection with the presently disclosed inventive concept (s) 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.
[0074] Any patents, published patent applications, and non-patent publications mentioned in the specification are hereby incorporated by reference in their entirety.
[0075] 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.
[0076] 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.
[0077] 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) .
[0078] 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.
[0079] 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.
[0080] 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:
[0081] 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.
[0082] 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. 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) .
[0083] 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.
[0084] As used herein, an "aerosol generating system" may be a system that includes an aerosol generating apparatus and optionally other circuitry / components associated with the function of the apparatus, e.g. one or more external devices and / or one or more external components (here “external” is intended to mean external to the aerosol generating apparatus) . As used herein, an “external device” and “external component” may include one or more of a: a charging device, a mobile device (which may be connected to the aerosol generating apparatus, e.g. via a wireless or wired connection) ; a networked-based computer (e.g. a remote server) ; a cloud-based computer; any other server system.
[0085] An example aerosol generating system may be a system for managing an aerosol generating apparatus. Such a system may include, for example, a mobile device, a network server, as well as the aerosol generating apparatus.
[0086] 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.
[0087] As used herein, a “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.
[0088] As used herein, a "storage portion" may be a portion of the apparatus adapted to store the precursor. It may be implemented as fluid-holding reservoir or carrier for solid material depending on the implementation of the precursor as defined above.
[0089] 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.
[0090] 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.
[0091] 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.
[0092] 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.
[0093] 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.
[0094] 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.
[0095] 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.
[0096] 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) .
[0097] Referring to Fig. 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 electric 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.
[0098] Electrical circuitry (not shown in figure 1) may be implemented to control the interoperability of the power supply 2 and aerosol generating unit 4.
[0099] Fig. 2 shows an implementation of the apparatus 1 of Fig. 1, where the aerosol generating apparatus 1 is configured to generate aerosol from a liquid precursor.
[0100] In this example, the apparatus 1 includes a device body 10 and a consumable 30.
[0101] In this example, the body 10 includes the power supply 4. 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.
[0102] 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.
[0103] The wireless interface 16 may be configured to communicate wirelessly with an external (e.g. mobile) device, e.g. via Bluetooth.
[0104] 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. Fig. 3) .
[0105] 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, one or more air inlets 36, and a mouthpiece 38. The consumable 30 may include one or more other components 40.
[0106] 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.
[0107] 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.
[0108] Activation of the aerosol generating apparatus 1 may be initiated, for example, by an airflow 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 2 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.
[0109] 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.
[0110] 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.
[0111] 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.
[0112] 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 34 arranged as a separable cartomizer.
[0113] Figs. 3A and 3B show an example implementation of the aerosol generating device 1 of Fig. 2. In this example, the consumable 30 is implemented as a capsule / pod, which is shown in Fig. 3A as being physically coupled to the body 10, and is shown in Fig. 3B as being decoupled from the body 10.
[0114] 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.
[0115] 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.
[0116] The body 10 also includes a charging port (not shown) at a bottom end 13 of the body 10.
[0117] 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 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.
[0118] 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.
[0119] 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.
[0120] Fig. 4 shows an implementation of the apparatus 1 of Fig. 1, where the aerosol generating apparatus 1 is configured to generate aerosol by a-heat not-burn process.
[0121] In this example, the apparatus 1 includes a device body 50 and a consumable 70.
[0122] In this example, the body 50 includes the power supply 4 and a heating system 52. The heating system 54 includes at least one heating element 54. The body may additionally include any one or more of electrical circuitry 56, a memory 58, a wireless interface 60, one or more other components 62.
[0123] The electrical circuitry 56 may include a processing resource for controlling one or more operations of the body 50, e.g. based on instructions stored in the memory 58.
[0124] The wireless interface 60 may be configured to communicate wirelessly with an external (e.g. mobile) device, e.g. via Bluetooth.
[0125] The other component (s) 62 may include an actuator, one or more user interface devices configured to convey information to a user and / or a charging port, for example (see e.g. Fig. 5) .
[0126] The body 50 is configured to engage with the consumable 70 such that the at least one heating element 54 of the heating system 52 penetrates into the solid precursor 6 of the consumable. In use, a user may activate the aerosol generating apparatus 1 to cause the heating system 52 of the body 50 to cause the at least one heating element 54 to heat the solid precursor 6 of the consumable (without combusting it) by conductive heat transfer, to generate an aerosol which is inhaled by the user.
[0127] Fig. 5 shows an example implementation of the aerosol generating device 1 of Fig. 4.
[0128] As depicted in Fig. 5, the consumable 70 is implemented as a stick, which is engaged with the body 50 by inserting the stick into an aperture at a top end 53 of the body 50, which causes the at least one heating element 54 of the heating system 52 to penetrate into the solid precursor 6.
[0129] The consumable 70 includes the solid precursor 6 proximal to the body 50, and a filter distal to the body 50. The filter serves as the mouthpiece of the consumable 70 and thus the apparatus 1 as a whole. The solid precursor 6 may be a reconstituted tobacco formulation.
[0130] In this example, the at least one heating element 54 is a rod-shaped element with a circular transverse profile. Other heating element shapes are possible, e.g. the at least one heating element may be blade-shaped (with a rectangular transverse profile) or tube-shaped (e.g. with a hollow transverse profile) .
[0131] In this example, the body 50 includes a cap 51. In use the cap 51 is engaged at a top end 53 of the body 50. Although not apparent from Fig. 5, the cap 51 is moveable relative to the body 50. In particular, the cap 51 is slidable and can slide along a longitudinal axis of the body 50.
[0132] The body 50 also includes an actuator 55 on an outer surface of the body 50. In this example, the actuator 55 has the form of a button.
[0133] The body 50 also includes a user interface device configured to convey information to a user. Here, the user interface device is implemented as a plurality of lights 57, which may e.g. be configured to illuminate when the apparatus 1 is activated and / or to indicate a charging state of the power supply 4. Other user interface devices are possible, e.g. to convey information haptically or audibly to a user.
[0134] The body may also include an airflow sensor which detects airflow in the aerosol generating apparatus 1 (e.g. caused by a user inhaling through the consumable 70) . This may be used to count puffs, for example.
[0135] In this example, the consumable 70 includes a flow path which transmits aerosol generated by the at least one heating element 54 to the mouthpiece of the consumable.
[0136] In this example, the aerosol generating unit 4 is provided by the above-described heating system 52 and the delivery system 8 is provided by the above-described flow path and mouthpiece of the consumable 70.
[0137] Fig. 6 illustrates a section view through an aerosol generating apparatus 100, which is an embodiment of the invention. The apparatus 100 is elongate, with a longitudinal axis and a transverse axis. A longitudinal extent of the apparatus 100 is greater than a transverse extent of the apparatus 100. The apparatus 100 has a body 102. The body 102 extends between a base end 104 and a mouthpiece end 108. The apparatus 100 includes a mouthpiece 106 located at the mouthpiece end 108 of the apparatus 100.
[0138] The body 102 of the apparatus 100 is formed from a hollow tube having a constant cross-sectional size and shape along a longitudinal extent of the body 102. The hollow tube has a tube wall. The hollow tube may be extrudable, in that the tube can be manufactured via an extrusion process. In particular, the body 102 has a constant circular cross-section. The tube is formed of Aluminium. The body 102 contains an aerosol generating unit 116 operable to generate an aerosol. The body contains a battery 118 located within a battery compartment 120 of the body 102. The battery 118 is arranged to supply power to the aerosol generating unit 116 via apparatus electrodes 122a, 122b.
[0139] The body 102 has an opening 110 to the battery compartment 120 at the base end 104 of the body 102. The battery 118 may be removed from the battery compartment 120 through this opening 110.
[0140] The opening 110 to the battery compartment 120 is closed (e.g. covered) by an end cap assembly 124. The end cap assembly 124 is releasably attached to the body 102. In the embodiment, the end cap assembly 124 is connected to the body 102 via a connecting assembly 126. The connecting assembly 126 is located at the base end 104 of the body 102. The connecting assembly 126 is a component which is mounted in the body 102. In particular, the connecting assembly 126 is slidably received in the body 102. In this embodiment, the connecting assembly 126 is mounted in the body 102 via a friction fit. In other embodiments, the connecting assembly may be mounted in the body via an adhesive. The connecting assembly 126 engages with the end cap assembly 124 to connect the end cap assembly 124 to the body 102.
[0141] A bayonet-type connection is provided between the end cap assembly 124 and the connecting assembly 126.
[0142] A gripping portion 128 is provided on an outer surface of the end cap assembly 124. The function of the gripping portion 128 is to assist a user in gripping the end cap assembly 124. This may assist a user to release the end cap assembly 124 from the connecting assembly 126. The gripping portion 128 is a textured, for example knurled, portion of an external surface of the end cap assembly 124. The gripping portion 128 is on a side wall of the end cap assembly 124.
[0143] As above, the body contains a battery 118 located within a battery compartment 120 of the body 102. The battery 118 is arranged to supply power to the aerosol generating unit 116 via apparatus electrodes 122a, 122b. The apparatus electrodes 122a, 122b are sprung. The sprung nature of the apparatus electrodes 122a, 122b generates a force on the battery 106 to urge the battery 106 towards the opening 110 of the battery compartment 120. The sprung apparatus electrodes 122a, 122b are an example of a biasing mechanism. Sprung apparatus electrodes 122a, 122b can also ensure that movement of the battery 118 within the battery cavity 120 is limited when the end cap assembly 124 is in place. For example, movement or vibration of the battery 118 may be reduced under usage of the apparatus 100. This can therefore allow for increased manufacturing tolerance.
[0144] An airflow path 200 extends through the body 102 from an air inlet 112 located at the base end 104 of the apparatus 100 to an air outlet 114 located on the mouthpiece 106. The aerosol generating unit 116 is fluidly connected to the airflow path 200.
[0145] In this embodiment, the aerosol generating unit 116 comprises a heater (not shown) and a wick (not shown) . The wick is fluidly connected to a reservoir or tank (not shown) and is configured to convey a liquid precursor from the reservoir to the heater. When power is supplied from the battery 118 to the heater, the aerosol generating unit 116 can thereby generate an aerosol from the liquid precursor. The heater is located in the airflow path 200. Aerosol is this generated in the airflow path 200. The generated aerosol can be drawn from the device by a user inhaling on the mouthpiece 106.
[0146] In other embodiments, other forms of aerosol generating unit 116 may be included in the apparatus 100. For example, the wick and heater may be integrally formed with each other. In still further embodiments, the aerosol generating unit may be configured to generate aerosol from a solid precursor, and the aerosol generating unit 116 may therefore not include a tank or a wick.
[0147] The apparatus 100 further comprises an airflow sensor 132. The airflow sensor 132 is fluidly connected to the airflow path 200. Using the airflow sensor 132, an airflow through the airflow path 200 can be detected. The airflow sensor 132 is operatively connected to the battery 118 and the aerosol generating unit 116. The apparatus 100 is configured to supply power from the battery 118 to the aerosol generating unit 116 when an airflow is detected in the airflow path 200 by the airflow sensor 132. An aerosol is generated by the aerosol generating unit 116 based on detection of an airflow in the airflow path by the airflow sensor 132. When an airflow is not detected in the airflow path 200, no power is supplied from the battery 118 to the aerosol generating unit 116. Aerosol is not generated by the aerosol generating unit 116 when an airflow is not detected in the airflow path 200 by the airflow sensor.
[0148] Fig. 7 illustrates the bayonet-type connection between the end cap assembly 124 and the connecting assembly 126. The end cap assembly 124 includes an outwardly extending peg 130 forming part of the bayonet-type connection. The peg 130 is arranged to interact with a corresponding L-shaped channel 134 in the connecting assembly 126. The bayonet-type connection may include one or more pegs 130 and an equal number of channels 134. The end cap assembly 124 is electrically passive. The end cap assembly 124 is formed from electrically insulative material (s) . the end cap assembly 124 is formed from plastic. The connecting assembly 126 is electrically passive. The connecting assembly 126 is formed from electrically insulative material (s) . The connecting assembly 126 is formed from plastic.
[0149] Each L-shaped channel includes a first (circumferentially extending) channel portion 134a. Each L-shaped channel includes a second (longitudinally extending) channel portion 134b. The second channel portion 134b of each channel 134 includes a chamfered opening 134c. In other words, the mouth of the second channel portion 134b is wider than a remaining part of the second channel portion 134b. The first channel portion 134a of each channel 134 includes a detent 134d.
[0150] The detent 134d is provided to retain the peg 130 in the first portion 134a of the respective channel 134. The detent 134d may require a threshold torsional force to be applied to the end cap assembly 124 to allow the peg 130 to be released from the detent 134d and to move along the first portion 134a of the channel.
[0151] The chamfered opening 134c of the second channel portion 134b allows for easy insertion of the peg 130 into the second channel portion 134b. This may aid insertion of the peg 130 into the channel 134 when attaching the end cap assembly 124 to the connecting assembly 126.
[0152] To release the end cap assembly 124 from the connecting assembly 126, the end cap assembly 124 is rotated (anticlockwise in this example) to move the pegs 130 along the first channel portion 134a. The end cap assembly 124 is subsequently moved longitudinally away from the connecting assembly 126 to move the pegs 130 along the second channel portion 134b. The end cap assembly 124 is thus released from the connecting assembly 126. The end cap assembly 124 may be attached to the connecting assembly 126 via a reverse of the above process.
[0153] In an alternative embodiment, the bayonet connection is reversed, such that one or more pegs are provided on the connection assembly 126, and a corresponding number of channels are provided on the end cap assembly 124.
[0154] The end cap assembly 124 has a mushroom shape. The end cap assembly 124 thereby includes a shaft portion 136 and a lip portion 138. The shaft portion 136 is insertable into the body 102. The lip portion 138 remains outside the body 102. The lip portion 138 covers a base end surface of the body 102. The pegs 130 are located on the shaft portion 136. The gripping portion 128 is located on the lip portion 138. The lip portion 138 can prevent the end cap assembly 124 from being inserted too far into the body 102 when attaching the end cap assembly 124 to the body 102. The lip portion 138 may also protect a user from the tubular body 102, which may have a sharp edge at a base end 104 thereof.
[0155] Also illustrated in Fig. 7 is a retaining element 140. The retaining element 140 is connected to the end cap assembly 124 and to the body 102. The retaining element 140 may be attached to the body 102 via the connecting assembly 126. The retaining element 140 allows the end cap assembly 124 to move only a limited distance from the body 102 when the end cap assembly 124 is released from the connecting assembly 126. For example, the retaining element 140 may be a strap, ribbon or thread of flexible material, for example, a plastic. The retaining element 140 may be attached to the end cap assembly 124 via a rotatable connection. In this way, the end cap assembly 124 is not obstructed from rotating relative to the connecting assembly 126 by the retaining element 140.
[0156] Fig. 7 illustrates an embodiment wherein the battery 118 is separate from or not attached to the end cap assembly 124. The battery 118 is not removed (e.g. pulled) from the battery compartment 120 when the end cap assembly 124 is released from the connecting assembly 126 and removed from the body 102. Fig. 8 illustrates an alternative embodiment, wherein the battery 118 is attached to the end cap assembly 124. In such embodiments, when the end cap assembly 124 is released from the connecting assembly 126 and removed from the body 102, the battery 118 is thus removed from the battery compartment 120.
[0157] The battery 118 is attached to the end cap assembly 124 by an attachment clip 142 provided on the end cap assembly 124. The attachment clip 142 may provide a releasable or a non-releasable connection between the battery 118 and the end cap assembly 124. A releasable connection means that the battery 118 can be released from the end cap assembly 124 after removal from the battery compartment 120. A non-releasable connection means that the battery 118 cannot be released from the end cap assembly 124 after removal from the battery compartment 118.
[0158] In embodiments including the attachment clip 142, the attachment clip 142 may restrict movement of the battery 118 within the battery compartment 120. In embodiments including the attachment clip 142 and sprung apparatus electrodes 122a, 122b, the attachment clip 142 and the sprung apparatus electrodes 122a, 122b may collectively restrict movement of the battery 118 within the battery compartment 120.
[0159] Fig. 9 shows a view of a battery 118. The battery 118 has a top face 144 which, in use, is located towards the mouthpiece end 108 of the apparatus 100 when the battery 118 is located within the battery compartment 120. An inner circular battery electrode 146a and an outer annular battery electrode 146b are arranged on the top face 144 of the battery. The inner battery electrode 146a and the outer battery electrode 146b are separated by a raised annular insulator 146c. The raised annular insulator 146c projects further from the top face 144 of the battery 118 than either the inner circular battery electrode 146a or the outer annular battery electrode 146b. The raised annular insulator 146c can reduce a risk of shorting between batteries 116. The raised annular insulator 146c may be formed of any suitable insulating material. In particular, the raised annular insulator 146c may be formed of plastic. In some examples, the raised annular insulator is formed from a rigid (substantially incompressible) plastic material.
[0160] Each of the inner battery electrode 146a and the outer battery electrode 146b are rotationally symmetric. Rotationally symmetric battery electrodes 146a, 146b mean that the battery 118 can be rotated within the battery compartment 120 (for example due to rotation of the end cap assembly 124) , without electrically disconnecting the battery 118 from the apparatus electrodes 122a, 122b and hence from the aerosol generating unit 116.
[0161] In addition, an embodiment wherein both battery electrodes 146a, 146b are arranged at the same (top) end of the battery 118 means that no electrical pathway is required to pass through the end cap assembly 124 or along the body. The end cap assembly 124 is electrically passive. The cap assembly is formed form electrically insulative material or materials. For example, a plastic. This can thereby simplify manufacturing of the end cap assembly 124 and of the apparatus 100 as a whole. The electrical components can be fully contained within the body 102 of the apparatus. For example, this means that no electrical pathway needs to be present through the connection between the end cap assembly 124 and the connection assembly 126. This therefore allows for more relaxed manufacturing tolerances for the end cap assembly 124 and the connection assembly 126.
[0162] Removing the battery 118 from the apparatus 100 may form part of a disposal process of the apparatus 100. The battery 118 can be directed to a different waste stream to other parts of the apparatus 100. Fig. 10 illustrates a method of removal of the battery 118 from the apparatus 100, which may form part of a process of preparing an aerosol generating apparatus 100 for recycling or disposal. The method comprises a first step S101 of releasing the end cap assembly 124 from the connecting assembly 126 of the apparatus 100. The method comprises a second step S102 of removing the battery 118 from the battery compartment 120. If the battery 118 is attached to the end cap assembly 124, the method may comprise an optional third step S103 of detaching the battery 118 from the end cap assembly 124. The method concludes with an optional fourth step S104 of directing the components of the apparatus 100 to two or more different waste streams.
[0163] At step S104, the apparatus 100 may have been separated into several different combinations of components. For example, the body 102, end cap assembly 124, and battery 118 may all be separated. Alternatively, where a retaining element 140 is provided for the end cap assembly 124, the body 102 and end cap assembly 124 may remain attached, while the battery 118 is separate. Still further, when the battery 118 is non-releasably attached to the end cap assembly 124, the battery 118 and end cap assembly 124 may remain connected, and may be separate from the body 102. These alternatives are illustrated in Fig. 11A, 11B, and 11C.
[0164] Removing the battery 118 from the apparatus 100 may enable the battery 118 to be replaced. This may allow prolonging of lifetime of the apparatus 100 if the battery 118 performance is degraded.
[0165] Fig. 12 illustrates a method of replacing a battery 118 of an apparatus 100. The method comprises a first step S201 of releasing the end cap assembly 124 from the connecting assembly 126 of the apparatus 100. The method comprises a second step S202 of removing an exhausted battery 118 from the battery compartment 120. If the battery 118 is attached to the end cap assembly 124, the method may comprise an optional third step S203 of detaching the battery 118 from the end cap assembly 124 and an optional fourth step S204 of attaching the new battery 118 to the end cap assembly 124. The method comprises a fifth step S205 of inserting a replacement battery 118 into the battery compartment 120, and a sixth step S206 of connecting the end cap assembly 124 to the connecting assembly 126 of the apparatus 100. The method may comprise an optional seventh step S207 of disposing of the exhausted battery 118.
[0166] The end cap assembly 124 includes a seal assembly 148 being operable to open or close the airflow path 200 through the apparatus 100. See e.g. Fig . 15.
[0167] When the seal assembly 148 is in an open position, the seal assembly 148 does not act as a blockage on the airflow path 200. Air can flow along the airflow path 200, and the apparatus 100 can operate to generate an aerosol.
[0168] When the seal assembly is in a closed position, the seal assembly 148 acts as a blockage on the airflow path 200. Airflow along the airflow path 200 (and hence past the airflow sensor 132) is prevented. The apparatus 100 is thereby prevented from operating to generate an aerosol.
[0169] Therefore, the seal assembly 148 can be used to temporarily prevent aerosol from being generated by the apparatus 100.
[0170] Fig. 13 shows an exploded view of the end cap assembly 124, illustrating the seal assembly 148. The seal assembly 148 is mounted to a mounting plate 150 of the end cap assembly 124. The mounting plate 150 comprises an aperture 152. The seal assembly 148 is rotatably mounted within the aperture 152. The mounting plate 150 comprises a plurality of recesses 154 for engaging with projections 170 of the seal assembly 148. The recesses 154 form part of a retention mechanism of the seal assembly 148. The mounting plate 150 comprises a plurality of airflow passages 156 which may be blocked by the seal assembly 148 to prevent air from flowing along the airflow path 200.
[0171] The seal assembly 148 comprises an actuator 158 having a touch plate 160 and a shaft 162, a seal 164, a screw 166 and a spring 168. The touch plate 160 is located below the mounting plate 150.
[0172] The touch plate 160 is externally accessible from the base end 104 of the apparatus 100. The shaft 162 passes through the aperture 152 to form an axle of the seal assembly 148. The seal 164 is arranged above the mounting plate 150 and within the apparatus 100. The seal 164 is connected to the shaft 162 of the actuator 158 by the screw 166. The spring 168 is mounted on the shaft 162 between the mounting plate 150 and the seal 164. The spring 168 serves as a biasing mechanism for the seal assembly 148.
[0173] Fig. 14 illustrates the configuration of the mounting plate 150, showing the positioning of the aperture 152, the recesses 154 and the airflow passages 156.
[0174] Fig. 15 further illustrates the seal assembly 148 in isolation from the end cap assembly 124. Fig. 14 shows projections 170 located on a lower face of the seal 164. The projections 170 are arranged to engage with the recesses 154 of the mounting plate 150. The projections 170 are part of the retention mechanism of the seal assembly 148. The spring 168 is configured to bias the seal 148 towards the mounting plate 150. The spring 168 is thereby configured to bias the seal 148 towards a position where the projections 170 are located in the recesses 154. The spring 168 is an example of a biasing mechanism. When the projections 170 are located in the recesses 154, the seal assembly 148 is retained in either the open position or the closed position.
[0175] Fig. 15 also shows stops 172 provided on the side of the touch plate 160. The stops 172 are arranged to engage with corresponding stops 180 of the lip portion 138 of the end cap assembly 124. The stops 180 limit a range of rotational motion of the touch plate 160 and hence of the seal assembly 148.
[0176] Fig. 16 further illustrates the base end 104 of the apparatus 100. In this embodiment, the touch plate 160 is circular. In this embodiment, the touch plate 160 is sized to be engaged by a finger of a user. The external surface of the touch plate 160 has a textured surface 174. The textured surface may improve user grip on the touch plate 160. In this embodiment, the textured surface 174 takes the form of raised radially extending ridges on the external surface of the touch plate 160. The external surface of the touch plate 160 has indicator marks 176a, 176b. In this embodiment, the indicator marks 176a, 176b have the form of an unlocked and a locked padlock symbol. In combination with an indicator arrow 178 on the lip portion 138 of the end cap assembly 124, the indicator marks 176a, 176b indicate the position of the seal assembly 148 to a user of the apparatus 100. The stops 180 are located on the inner surface of the lip portion 138. The stops 180 are arranged to engage with the stops 172 of the touch plate 160. The stops 172, 180 limit the range of rotational motion of the touch plate 160 and hence the seal assembly 148.
[0177] An annular air inlet 112 is formed between the touch plate 160 of the actuator 158 and the lip portion 138 of the end cap assembly 124. Air can thereby pass between the touch plate 160 of the actuator 158 and the lip portion 138 of the end cap assembly 124 to reach the airflow passages 156 through the mounting plate 150 of the end cap assembly 124. This is further illustrated in Fig. 17, which shows that the airflow path 200 passes through the air inlet 112 to the airflow passages 156 of the mounting plate 150. The airflow path 200 then continues past the seal 164 and into the battery compartment 120 to pass around the battery 118. Although not illustrated in Fig. 17, the airflow path 200 then passes the airflow sensor 132 and aerosol generating unit 116 before exiting the apparatus 100 via the 114 located on the mouthpiece 106.
[0178] Fig. 18 illustrates a first example of a seal 164 forming part of the seal assembly 148. The seal 164 may be formed of a polymeric material. The polymeric material may be a plastic or a natural or synthetic rubber. The seal 164 may be formed of a flexible material. This may provide improved sealing of the airflow passages 156 of the mounting plate 150.
[0179] The seal 164 has a dumbbell shape, with two lobes 182 connected by a beam 184. Two voids 186 are formed between the lobes 182. The seal 164 is rotationally symmetric. This can provide increased ease of assembly of the end cap assembly 124.
[0180] The projections 170 of the seal 164 have a chamfered shape. This can improve engagement between the projections 170 and the recesses 154 of the mounting plate 150. For example, it may enable the projections 170 to enter the recesses 154 even if the projections are not precisely positioned over the recesses 154.
[0181] The seal 164 further comprises a mounting sleeve for mounting the seal 164 to the shaft 162 of the actuator 158. The mounting sleeve has a circular central portion 188 and two radially extending slots 190. This shape can ensure engage with corresponding portions of the shaft 162. The seal 164 can thus be rotationally locked with the shaft 162. In this way, rotating the actuator 158 rotates the seal 164. In this embodiment, the mounting sleeve is rotationally symmetric.
[0182] In other embodiments, the mounting sleeve may be rotationally asymmetric. This may be advantageous if the seal 164 must be mounted in a particular orientation within the end cap assembly 124. The seal 164 may need to be mounted in a particular orientation in an embodiment where the seal 164 and / or airflow passages 156 of the mounting plate are not rotationally symmetric. For example, only one radially extending slot 190 may be provided. Alternatively, the radially extending slots 190 may arranged to have an unequal spacing around the central portion 188.
[0183] An alternative embodiment of a seal 164 is illustrated in Fig, 19. The seal 164 in Fig. 19 differs from that in Fig. 18 in that the voids 186 are covered by a deflection plate 192. The deflection plate 192 forms part of an upper surface of the seal 164. The deflection plate 192 is arranged to direct airflow outwardly of the seal 164 when air flows into the voids 186. This may improve airflow through the airflow path 200.
[0184] Figs. 20A, 20B, 21A and 21B illustrate the positioning of the seal 164 with respect to the mounting plate 150 in each of the closed position and the open position of the seal assembly 148. Figs. 20A and 21A illustrate the seal 164 in the open position, such that the airflow passages 156 of the mounting plate 150 are not covered by the lobes 182 of the seal 164. Figs. 20B and 21B illustrate the seal 164 in the closed position, such that the airflow passages 156 of the mounting plate 150 are covered by the lobes 182 of the seal 164. In Figs. 21A and 21B, the seal 164 is shown as transparent, revealing the interaction between the recesses 154 of the mounting plate 150 and the projections 170 of the seal 164.
[0185] When the seal assembly 148 is in the open position, the projections 170, shown as filled circles, are located in a first pair of recesses 154a. A second pair of recesses 154b are empty. When the seal assembly 148 is in the closed position, the second pair of recesses 154b is occupied by the projections 170, and the first pair of recesses 154a is empty.
[0186] In this embodiment, the projections 170 are not located in the airflow passages 156 in either the open or the closed position of the seal assembly 148. The airflow passages 156 may have a different size and / or shape than the recesses 154 to prevent the projections 170 from entering the recesses 154. For example, the airflow passages 156 may be smaller than the recesses 154. The airflow passages 156 may be arranged on the mounting plate 150 outside the rotation range of the projections 170 (i.e. arranged other than between the recesses 154) . In other embodiments, the projections 170 may move between a pair of recesses 154 when in the open position and the airflow passages 156 when in the closed position. The airflow passages 156 may have a corresponding size and / or shape to the recesses 154 to enable the projections 170 to enter the recesses 154. For example, the airflow passages 156 may be larger than the recesses 154.
[0187] In still further embodiments, the projections 170 may additionally or alternatively be provided on the mounting plate 150. Corresponding recesses may be provided on the seal 164. For example the mounting plate 150 may include projections, with the seal 164 including recesses. In another embodiment, the mounting plate 150 and the seal 164 may each include projections and recesses.
[0188] The number of projections and recesses may be different to that illustrated in this embodiment. For example, a single projection 170 and two recesses 154 may be sufficient to retain the seal 164 in the requisite two positions. If the airflow passage 156 represents one of the recesses, then only one further recess 154 may be required.
[0189] In the embodiment of Figs 20A, 20B, 21A and 21B, the seal assembly 148 is rotated between the open and closed positions. However, in alternative embodiments, the seal assembly 148 may instead be moved in a sliding motion between the open and closed positions.
[0190] The projections 170 of the seal 164 and the recesses 154 of the mounting plate 150 interlock to form a retention mechanism for the seal assembly 148. The seal assembly 148 is thus retained in each of the open position and the closed position by the retention mechanism. The retention mechanism must be released by removing the projections 170 from the recesses 154 to enable the seal assembly 148 to be moved between the open position and the closed position. The provision of a retention mechanism reduces the chance of accidental movement of the seal assembly between the closed position and the open position.
[0191] A method of moving the seal assembly 148 between the open position and the closed position (or vice versa) is described with reference to Fig. 22. In a first step S301, a user presses on the touch plate 160. When the user exerts a force on the touch plate 160 in this way, the biasing effect of the spring 168 is overcome. The projections 170 of the seal 164 are lifted from the recesses 154 of the mounting plate. The retention mechanism is thus released, meaning that the seal assembly 148 can be moved or rotated between the open and closed positions. In the second step S302, the user rotates the touch plate 160 to move the seal assembly 148 between the open and closed positions.
[0192] In the third step S303, the user releases the touch plate 160, and the projections 170 are moved into the recesses 154 under the biasing effect of the spring 168. The seal assembly 148 is thus retained in the new position.
[0193] If the user releases the pressure on the touch plate 160 before rotating the seal assembly 148, the projections 170 are moved into the recesses 154 under the biasing effect of the spring 168 and the seal assembly 148 is thus retained in the original position. If the user releases the pressure on the touch plate 160 at an intermediate rotation position (i.e. between the open and closed positions) , the projections 170 may be unable to enter the recesses 154. Thus, the seal assembly 148 may remain free to move until it has been rotated to either the closed position or the open position wherein the projections 170 may be enter the recesses 154.
[0194] The seal assembly 148 may be configured such that a rotational or torsional force required to move the seal assembly 148 between the open and closed positions is less than the threshold force required to release the projection 130 of the end cap assembly 124 from the detent 134d of the connecting assembly 126. In this way, the user can move the seal assembly 148 without releasing the end cap assembly 124 from the connecting assembly 126.
[0195] In Fig, 7, the detent 134d is illustrated as being located on a lower surface of the first portion 134a of the channel. In other embodiments, the detent or an additional detent may be provided on the upper surface of the first portion of the channel 134a. In this way, when a user exerts pressure on the touch plate 160 to release the retention mechanism and move the seal assembly 148, the projection 130 is urged into the detent, preventing the end cap assembly from rotating relative to the connecting assembly 126.
[0196] The direction of rotation required to move the seal assembly 148 may be set according to the direction of rotation required to release the end cap assembly 124 from the connecting assembly 126. For example, the seal assembly 148 may be configured such that the rotation direction of the seal assembly 148 required to move from the open position to the closed position is the same as the rotation direction required to release the end cap assembly 124 from the connecting assembly 126. This may prevent a user from inadvertently releasing the end cap assembly 124 from the connecting assembly 126 when attempting to move the seal assembly 148 from the closed position to the open position.
[0197] Use of a bayonet-type connection to connect an end cap assembly 124 having a seal assembly 148 to a connection assembly 126 may be advantageous. There is a reduced likelihood of the end cap assembly 124 being either deliberately or accidentally partially detached from the connection assembly 126. If the end cap assembly 124 were to become partially detached from the connection assembly 126, this could provide an alternative airflow path into the apparatus 100. In this way, the seal assembly 148 may become ineffective.
[0198] While the above embodiments have described a releasably attached end cap assembly 124 having a seal assembly 148, these two concepts can be separately provided. For example, the apparatus 100 may include a seal assembly 148 within a non-releasable end cap assembly. Similarly, the apparatus 100 may include a releasably attached end cap assembly 124 that does not include a seal assembly 148.
Claims
1.An aerosol generating apparatus (100) comprising:a body (102) having a base end (104) and a mouthpiece end (108) ; the body comprising a battery compartment (120) having an opening (110) at the base end (104) of the body (102) for removal of a battery (118) from the battery compartment (120) ; andan end cap assembly (124) for closing the opening (110) to the battery compartment (120) , the end cap assembly (124) being releasably attached to the body (102) , wherein the end cap assembly (124) is electrically passive.2.An aerosol generating apparatus (100) according to claim 1, wherein the end cap assembly (124) is rotatable relative to the body (102) to release the end cap assembly (124) from the body (102) .3.An aerosol generating apparatus (100) according to claim 2, wherein the end cap assembly (124) is attached to the body (102) via a bayonet attachment mechanism.4.An aerosol generating apparatus (100) according to any preceding claim, wherein the body (102) comprises a housing formed as a tube.5.An aerosol generating apparatus (100) according to claim 4, wherein the aerosol generating apparatus (100) comprises a connecting assembly (126) mounted in a base end of the housing, the connecting assembly (126) being for attaching the end cap assembly (124) to the body (102) .6.An aerosol generating apparatus (100) according to any preceding claim, wherein the end cap assembly (124) comprises a shaft portion (136) for insertion into the body (102) , and a lip portion (138) for covering a base end of the body (102) .7.An aerosol generating apparatus (100) according to claim 6, wherein the lip portion (138) of the end cap assembly (124) comprises a gripping portion (128) .8.An aerosol generating apparatus (100) according to any preceding claim, wherein the end cap assembly (124) comprises an air inlet (112) of the aerosol generating apparatus (100) .9.An aerosol generating apparatus (100) according to claim 8, wherein the end cap assembly (124) comprises a seal assembly (148) operable to prevent an airflow through the air inlet (112) .10.An aerosol generating apparatus (100) according to any preceding claim, comprising a bias mechanism located in the battery compartment (120) and configured to urge a battery (118) in the battery compartment (120) towards the opening (110) .11.An aerosol generating apparatus (100) according to any preceding claim, comprising a battery (118) located in the battery compartment (120) , wherein the battery (118) is mechanically attached to the end cap assembly (124) .12.An aerosol generating apparatus (100) according to claim 11, wherein the battery (118) comprises a top face (144) located towards a mouthpiece end of the battery compartment (120) , and wherein the battery (118) comprises first and second battery electrodes (146a, 146b) arranged on the top face (144) of the battery (118) , the first and second battery electrodes (146a, 146b) being rotationally symmetric about a longitudinal axis of the battery (118) .13.An aerosol generating apparatus (100) according to claim 12, wherein the first battery electrode (146a) is a circular electrode arranged centrally on the top face (144) of the battery (118) , and wherein the second battery electrode (146b) is an annular electrode arranged about the first electrode on the top face (144) of the battery (118) .14.An aerosol generating apparatus according to any preceding claim, comprising a retaining element (140) for retaining the end cap assembly (124) to the body (102) when the end cap assembly (124) is released from the body (102) .15.A method of disposal of an aerosol generating apparatus (100) , the aerosol generating apparatus (100) comprising:a body (102) having a base end (104) and a mouthpiece end (108) ; the body comprising a battery compartment (120) having an opening (110) at the base end (104) of the body (102) for insertion and / or removal of a battery (118) from the battery compartment (120) ;a battery (118) located in the battery compartment (120) ; andan end cap assembly (124) for closing the opening (110) to the battery compartment (120) , the end cap assembly (124) being releasably attached to the body (102) , the end cap assembly (124) is electrically passive;the method comprising steps of:releasing the end cap assembly (124) from the body (102) ; andremoving the battery (118) from the battery compartment (120) .
Citation Information
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