Smoking replacement system

Abstract

A smoking substitute device (201) having a body (209), a heating element extending from the body, and a cap (210) removably connected to the body. The cap is movable along the longitudinal axis of the body between a first position and a second position. In the first position, the heating element is concealed in the cap, and in the second position, the heating element is at least partially exposed.

Description

Technical Field

[0001] The present invention relates to smoking substitute systems and particularly, but not exclusively, to smoking substitute systems comprising a smoking substitute device and a tool for use with said device. Background Art

[0002] Smoking tobacco is generally considered to expose the smoker to potentially harmful substances. It is generally believed that a large number of potentially harmful substances are produced by the burning of tobacco and / or the heat caused by the combustion of the tobacco and the components of the burned tobacco in the tobacco smoke itself.

[0003] Traditional combustible smoking articles, such as cigarettes, typically include a cylindrical tobacco rod consisting of tobacco shreds wrapped by a wrapper, and generally also include a cylindrical filter axially aligned in abutment with the wrapped tobacco rod. The filter generally includes a filter material surrounded by a plug wrap. The wrapped tobacco rod and the filter are connected together by a plugging paper band wrapped around the entire length of the filter and the adjacent portion of the wrapped tobacco rod. This type of traditional cigarette is used by lighting the end opposite to the filter and burning the tobacco rod. The smoker receives mainstream smoke into their mouth by inhaling at the mouth end or filter end of the cigarette.

[0004] It is known that the combustion of organic materials such as tobacco produces tar and other potentially harmful by-products. In order to avoid smoking tobacco, various smoking replacement systems (or "alternative smoking systems") have been proposed.

[0005] Such a smoking replacement system may form part of a nicotine replacement therapy for people wishing to stop smoking and overcome dependence on nicotine.

[0006] Smoking replacement systems include electronic systems that allow users to simulate the act of smoking by generating an aerosol (also called "vapor") that is drawn (inhaled) into the lungs through the mouth and then exhaled. The inhaled aerosol typically carries nicotine and / or flavorings without or with less odor and health risks associated with traditional smoking.

[0007] Typically, smoking alternative systems are intended to provide an alternative to the smoking habit while providing the user with an experience and satisfaction similar to that of traditional smoking and combustible tobacco products. Some smoking alternative systems use smoking alternative articles (also referred to as "consumables") that are designed to resemble traditional cigarettes and are in the form of a cylinder with a nozzle at one end.

[0008] The popularity and use of smoking replacement systems has grown rapidly over the past few years. Although initially marketed as an aid to help habitual smokers who wish to quit smoking, consumers increasingly view smoking replacement systems as an adjunct to a desired lifestyle.

[0009] There are many different kinds of smoking replacement systems, each using a different method of replacing smoking.

[0010] One method used in smoking replacement systems is the so-called heated tobacco ("HT") method, in which tobacco (rather than "e-liquid") is heated or warmed to release vapor. HT is also called "heat not burn" ("HNB"). The tobacco can be tobacco leaf or reconstituted tobacco. The vapor can contain nicotine and / or flavorings. In the HT method, the purpose is that the tobacco is heated but not burned, that is, the tobacco does not undergo combustion.

[0011] Typical HT smoking alternative system can include device and consumables.Consumables can include tobacco material.Device and consumables can be configured to be physically connected together.For example, consumables can be inserted in cavity or heating chamber, thereby set up physical contact with the heating element being positioned at cavity.In use, heat can be transferred to tobacco material by the heating element of device, wherein the air flow through tobacco material makes the component in tobacco material be released as steam.Steam can also be formed by the carrier (this carrier can for example include propylene glycol and / or vegetable glycerine) in tobacco material and other volatile compounds released from tobacco.The steam released can be entrained in the air flow that is sucked through tobacco.

[0012] As the vapor passes through the consumable (entrained in the air flow) from the vaporization site to the outlet (eg, nozzle) of the consumable, the vapor cools and condenses to form an aerosol that the user breathes in. The aerosol will typically contain volatile compounds.

[0013] In HT smoking replacement systems, heating rather than burning tobacco materials is believed to result in less or less harmful compounds that are typically produced during smoking. Therefore, the HT method can reduce the odor and / or health risks that may be produced by burning, combustion and pyrolytic degradation of tobacco.

[0014] During use, the physical contact between the heating element and the tobacco material causes residue to form on the surface of the heating element. Therefore, HT devices usually need to be frequently cleaned with special tools to avoid accumulation of residue on the heater surface. For example, the user may need to use a brush or a disposable solvent exchange to clean the heating element. However, currently available HT systems may only provide access to the heating element through an opening towards the end of the cavity. In addition, the user may need to remove the cap covering the opening to obtain access to the heating element before cleaning. This arrangement may be inconvenient. Therefore, some users may only clean the heating element after the device has consumed a given number of consumables, such as 20 consumables, when the accumulated residue becomes harmful to the experience, such as when a burnt taste can be felt.

[0015] Improved designs of smoking substitute devices, particularly HT smoking substitute devices, may be needed to enhance the user experience and improve the functionality of HT smoking substitute devices.

[0016] In view of the above considerations, the present disclosure has been designed. Summary of the invention

[0017] In the most general case, the present invention relates to a smoking substitute system having a smoking substitute device having a cap that is movable between two positions to selectively hide or expose a heating element of the smoking substitute device. This can allow a user to physically access and clean the heating element in a more convenient manner, and thereby facilitate a more frequent cleaning routine. The present invention also relates to a tool for removing the cap from the device and thereby preventing unintentional removal of the cap. The tool may also include a cleaning device to allow a user to clean the heating element after the cap is removed by the tool.

[0018] According to a first aspect of the present invention, there is provided a smoking substitute device having a body, a heating element extending from the body and a cap removably connected to the body. The cap is movable along the longitudinal axis of the body between a first position and a second position. In the first position, the heating element is concealed in the cap, and in the second position, the heating element is at least partially exposed.

[0019] For example, in a first position, the cap may cover a window or opening at a side wall of the body that extends into a lateral cavity housing the heating element, thereby hiding the heating element. In a second position, the cap moves or slides to a position where it no longer covers the opening, so that the heating element may be at least partially exposed through the opening. More specifically, the opening may be positioned adjacent to the exposed portion of the heating element, so that it may provide physical access to the exposed portion of the heating element.

[0020] By providing a device including a cap that can be moved between two positions, the heating element can be cleaned in a more convenient manner. For example, when the cap moves to the second position, the heating element can be exposed from the side of the device through a window or opening, so that the heating element can be visually inspected or cleaned through the opening. Advantageously, the user can therefore perform a short cleaning at the heating element without the need for a dedicated cleaning tool. For example, the user can simply purge or physically shake, tilt and / or knock the device through an opening to remove the loose debris formed on the heating element. The user can also use a tool (such as a brush) to physically clean the exposed portion (such as the base of the heating element) of the heating element. In addition, before deep cleaning or other similar maintenance is required, the smoking substitute as disclosed herein can extend the availability of the device.

[0021] Optional features will now be described. These may be applied alone or in any combination with any aspect.

[0022] Optionally, the cap can be retained on the body in the second position by a retaining mechanism. Optionally, the retaining mechanism can be any suitable retaining mechanism, such as an interference fit or a latching mechanism. Advantageously, the retaining mechanism can allow the cap to be positioned and retained in the second position during visual inspection and / or cleaning, and after the cap reaches the second position, the retaining mechanism can prevent the cap from moving further along the longitudinal axis, thereby preventing the cap from being accidentally removed from the body.

[0023] Optionally, the retaining mechanism includes at least one flexible locking arm extending from the body, and a locking projection disposed on at least one locking arm. The locking projection may be configured to engage with a slot defined in the cap to retain the cap on the body. Optionally, the locking projection may be retained in the slot when the cap moves between the first position and the second position. Advantageously, the locking projection may slide along the slot when the cap moves from the first position to the second position, thereby preventing relative rotation between the cap and the body.

[0024] Optionally, the body defines a transverse cavity forming an opening through a first side wall of the body, and the opening can be juxtaposed with the base of the heating element to at least partially expose the base of the heating element when the cap is in the second position. For example, the opening at the side wall of the body leads to the transverse cavity. The transverse cavity can be juxtaposed laterally with the base of the heating element, or in other words, the transverse cavity can be open in a direction orthogonal to the longitudinal axis of the body.

[0025] Optionally, the transverse cavity may extend from the first side wall of the body to a second side wall opposite the first side wall. In other words, the transverse cavity may be a through hole extending through the first side wall and the second side wall of the body. Advantageously, this may allow loose debris to be effectively discharged from the opening or through hole.

[0026] Optionally, the locking projection is configured to prevent the cap from being separated from the device by abutting the end of the slot when the cap has moved to the second position, thereby preventing further movement of the cap. In other words, when the cap is in the second position, the locking projection can prevent the cap from moving by abutting the outer peripheral surface of the cap defining the slot, thereby preventing separation of the cap.

[0027] Optionally, the cap may define a cavity for housing at least a portion of the aerosol-forming article. Optionally, the slot may be connected to or open into the cavity.

[0028] In a second aspect according to the invention, a tool for separating a cap from the body of a smoking substitute device is disclosed. The tool can be used to separate the cap from the device or to remove the cap from the device for deep cleaning of the heating element. The tool has an unlocking device at one end and a cleaning device at the other end. The tool can provide compactness and easy maintenance of the smoking substitute device of the smoking substitute system of the present disclosure.

[0029] The tool may have at least one unlocking arm and an unlocking projection disposed on the unlocking arm. The unlocking projection may be configured to displace a corresponding locking projection disposed on a locking arm extending from the body of the device so that the locking projection disengages from the slot in the cap. Advantageously, the tool prevents unintentional removal of the cap from the body of the device.

[0030] Optionally, the tool further comprises a cleaning device for cleaning the heating element. Advantageously, the cleaning device conveniently allows a user to physically clean the heating element after removing the cap by the tool, thereby allowing a better cleaning of the heating element, such as a "deep clean" of the heating element. Optionally, the cleaning device comprises at least one cleaning bristle. Advantageously, in use, the bristle can scrape on the surface of the heating element, thereby allowing the heating element to be cleaned in a more effective manner.

[0031] Optionally, the tool further comprises a central rod, the at least one unlocking arm extends in a first direction along a longitudinal axis of the central rod, and the cleaning device extends in a second direction opposite to the first direction.

[0032] Optionally, the tool comprises a collar around the central rod, the neutral rod having unlocking arms extending in a first direction, the collar being movable between an insertion position, wherein in the insertion position at least one unlocking arm is allowed to flex, and an unlocking position, wherein in the unlocking position the central rod prevents the unlocking arms from flexing. The collar may comprise an annular collar. The collar may be positioned concentrically with the central rod.

[0033] Optionally, the tool further comprises a first cover configured to cover the at least one unlocking arm and a second cover configured to cover the cleaning device.

[0034] Optionally, the tool has an outer contour similar to the outer contour of an aerosol-forming article for a smoking replacement system.

[0035] The device may include an elongated body. The end of the elongated body may be configured to engage with an aerosol-forming article. For example, the body may be configured to engage with a heated tobacco (HT) consumable (or a heat-not-burn (HNB) consumable). The terms "heated tobacco" and "heat-not-burn" are used interchangeably herein to describe consumables of the heating-not-burning type (or interchangeably to describe a device used with such consumables). The device may include a cavity configured to accommodate at least a portion of the consumable (i.e., for engaging with the consumable). The aerosol-forming article may be a type that includes an aerosol precursor (e.g., carried by an aerosol-forming substrate).

[0036] The body may define a transverse cavity extending perpendicular to the longitudinal axis of the body.The transverse cavity may extend laterally and may be located on the body such that at least a base of the heating element is juxtaposed with the transverse cavity.

[0037] In addition, at least one locking arm may extend from the body. The locking arm may lock or retain the cap with the body. The locking arm may be provided with a locking projection at a distal end. The locking projection may extend transversely to the longitudinal axis of the body. The locking arm may be positioned so that when the cap is mounted on the body, the locking arm may engage the cap to retain the cap on the body.

[0038] The cap may be provided with a slot extending along the longitudinal axis of the body (when the cap is retained on the body), and the locking projection may be configured to engage the slot. The slot may be elongated so that the cap may be moved or slid relative to the body along the longitudinal axis of the body. The locking projection may have an abutment surface to engage the outer peripheral surface of the cap defining the slot, thereby retaining or locking the cap with the body.

[0039] The cap can be moved between a first position and a second position. When the cap is in the first position, the cap can conceal the heating element. When the cap is in the second position, the heating element can be at least partially exposed, such as through a window or opening at a side wall of the body. When the heating element is partially exposed, the heating element can be visually inspected to determine whether the heating element needs to be cleaned. If necessary, when the cap is in the second position, the heating element can be at least partially cleaned by blowing air through the opening or simply shaking, tilting and / or gently tapping the device to dislodge and remove loose debris.

[0040] The smoking replacement system of the present disclosure may also include a tool for separating the cap from the main body. The tool may be configured to displace the locking arm so that the cap can be separated from the main body. The tool may include at least one unlocking arm. The unlocking arm may be adapted to engage the locking arm to displace the locking arm for separating the cap from the main body. Each unlocking arm may be provided with an unlocking protrusion. The unlocking protrusion may extend in a direction perpendicular to the longitudinal axis of the unlocking arm. The unlocking protrusion may be adapted to engage the locking protrusion to displace the locking protrusion for disengaging the cap from the main body.

[0041] The tool may also include a center rod. The collar may be positioned concentrically with the center rod. The collar may be movably placed on the rod so that the collar moves relative to the center rod along the longitudinal axis of the center rod. The unlocking arm may extend from the collar along the longitudinal axis of the center rod. The collar may move between an insertion position and an unlocking position on the center rod. In the insertion position, the center rod may be kept away from the unlocking projection, and the unlocking arm may be bent radially inwardly relative to the longitudinal axis of the center rod. In the unlocking position, the center rod may move adjacent to the unlocking projection to prevent the unlocking arm from bending in a direction radially inwardly relative to the longitudinal axis of the center rod. The collar may be biased to move toward the insertion position using any suitable device (e.g., a coil spring).

[0042] The tool can be configured to be inserted in the cavity. The unlocking projection can be configured so that when the unlocking arm is inserted in the cavity, the unlocking arm displaces the locking arm to disengage the locking arm. The unlocking projection can have a size that interferes with the width of the cavity. In order to allow the unlocking arm to be inserted in the cavity, in the insertion position, the center rod can be spaced from the distal end of the unlocking arm to allow the distal end of the unlocking arm to be bent radially inwardly, so that the unlocking arm with the unlocking projection can be inserted in the cavity. When the unlocking projection abuts and slides against the inner surface of the cap that defines the inner cavity, bending can be achieved. As shown in the illustrated embodiment, the unlocking projection can be provided with a tapered surface to guide the bending movement of the unlocking arm in and out of the cavity and the groove.

[0043] The tool may also include a cleaning device for cleaning the heating element. The cleaning device may be in the form of cleaning bristles. The cleaning bristles may be rubbed on the outer surface of the heating element to clean or remove any debris or residue from the heating element.

[0044] The tool may include a first cover to cover the unlocking arm when not in use. In addition, a second cover may be provided to cover the cleaning bristles when not in use.

[0045] The device may comprise a heater for heating the aerosol-forming article. The heater may comprise a heating element, which may be in the form of a rod extending from the body of the device. The heating element may extend from an end of the body configured to engage the aerosol-forming article.

[0046] The heater (and therefore the heating element) may be securely mounted to the body. The heating element may be elongated so as to define a longitudinal axis, and may, for example, have a substantially circular transverse profile (i.e. perpendicular to the longitudinal axis of the heating element) (i.e. the heating element may be substantially cylindrical). Alternatively, the heating element may have a rectangular transverse profile (i.e. the heater may be a "blade heater"). Alternatively, the heating element may be in the shape of a tube (i.e. the heater may be a "tubular heater"). The heating element may take other forms (e.g., the heating element may have an elliptical transverse profile). The shape and / or size (e.g., diameter) of the transverse profile of the heating element may be substantially uniform over the entire length (or substantially the entire length) of the heating element.

[0047] The heating element may be 15 mm to 25 mm long, such as 18 mm to 20 mm long, such as about 19 mm long. The heating element may have a diameter of 1.5 mm to 2.5 mm, such as 2 mm to 2.3 mm in diameter, such as about 2.15 mm in diameter.

[0048] The heating element may be formed of ceramic. The heating element may include a core (e.g., a ceramic core) comprising Al2O3. The diameter of the core of the heating element may be 1.8 mm to 2.1 mm, for example 1.9 mm to 2 mm. The heating element may include an outer layer (e.g., an outer ceramic layer) comprising Al2O3. The thickness of the outer layer may be 160 μm to 220 μm, for example 170 μm to 190 μm, for example about 180 μm. The heating element may include a heating track that may extend longitudinally along the heating element. The heating track may be sandwiched between the outer layer and the core of the heating element. The heating track may contain tungsten and / or rhenium. The heating track may have a thickness of about 20 μm.

[0049] The heating element may be located in the cavity (of the device) and may extend from the interior base of the cavity toward the opening of the cavity (e.g., along the longitudinal axis). The length of the heating element (i.e., along the longitudinal axis of the heater) may be less than the depth of the cavity. Thus, the heating element may extend within only a portion of the length of the cavity. In other words, the heating element may not extend through (or beyond) the opening of the cavity.

[0050] The heating element may be configured to be inserted into an aerosol-forming article (e.g., a HT consumable) when the aerosol-forming article is contained in the cavity. In this regard, the distal end of the heating element (i.e., away from the base of the heating element mounted to the device) may include a tapered portion, which may facilitate insertion of the heating element into the aerosol-forming article. When the aerosol-forming article is contained in the cavity, the heating element may completely penetrate the aerosol-forming article. In other words, the entire length or substantially the entire length of the heating element may be contained in the aerosol-forming article.

[0051] The length of the heating element may be less than or substantially equal to the axial length of an aerosol-forming substrate that forms part of an aerosol-forming article (e.g., an HT consumable). Thus, when such an aerosol-forming article is engaged with the device, the heating element may only penetrate the aerosol-forming substrate, rather than other components of the aerosol-forming article. The heating element may penetrate the aerosol-forming substrate over substantially the entire axial length of the aerosol-forming substrate of the aerosol-forming article. Thus, when penetrated by the heating element, heat may be transferred from the heating element (e.g., the peripheral surface of the heating element) to the surrounding aerosol-forming substrate. In other words, heat may be transferred radially outward (in the case of a cylindrical heating element) or, for example, radially inward (in the case of a tubular heater).

[0052] In the case where the heater is a tubular heater, the heating element of the tubular heater may surround at least a portion of the cavity. When a portion of the aerosol-forming article is accommodated in the cavity, the heating element may surround that portion of the aerosol-forming article (i.e. so as to heat that portion of the aerosol-forming article). In particular, the heating element may surround an aerosol-forming substrate of the aerosol-forming article. In other words, when the aerosol-forming article is engaged with the device, the aerosol-forming substrate of the aerosol-forming article may be positioned adjacent to the inner surface of the (tubular) heating element. When the heating element is activated, heat may be transferred radially inwards from the inner surface of the heating element to heat the aerosol-forming substrate.

[0053] The cavity may comprise a (e.g. circumferential) wall (or walls), and the (tubular) heating element may extend around at least a portion of the wall. In this way, the wall may be located between the inner surface of the heating element and the outer surface of the aerosol-forming article. The wall (or walls) of the cavity may be formed of a thermally conductive material (e.g. metal) to allow heat conduction from the heating element to the aerosol-forming article. Thus, heat may be conducted from the heating element through the cavity wall (or walls) to the aerosol-forming substrate of the aerosol-forming article contained in the cavity.

[0054] In some embodiments, the device may include a cap disposed at an end of the body, the cap being configured to engage with the aerosol-forming article. Where the device includes a heater having a heating element, the cap may at least partially enclose the heating element. The cap may be movable between an open position or a second position in which access to the heating element is provided and a closed position in which the cap at least partially encloses the heating element. The cap may be slidably engaged with the body of the device and may slide between an open position and a closed position.

[0055] The cap may define at least a portion of a cavity of the device. In other words, the cavity may be completely defined by the cap, or the cap and the body may each define a portion of the cavity. In the case where the cap completely defines the cavity, the cap may include a hole for accommodating a heating element in the cavity (when the cap is in a closed position). The cap may include an opening leading to the cavity. The opening may be configured to accommodate at least a portion of an aerosol-forming article. In other words, the aerosol-forming article may be inserted through the opening and into the cavity (so as to engage with the device).

[0056] The cap may be configured such that when the aerosol-forming article is engaged with the device (e.g. contained in the cavity), only a portion of the aerosol-forming article is contained in the cavity. In other words, a portion of the aerosol-forming article (not contained in the cavity) may protrude from the opening (i.e. extend beyond the opening). This (protruding) portion of the aerosol-forming article may be the terminal (e.g. mouth) end of the aerosol-forming article, which may be contained in the mouth of a user for the purpose of inhaling an aerosol formed by the device.

[0057] The device may include a power source or may be connected to a power source (e.g., a power source separate from the device). The power source may be electrically connected to the heater. In this regard, changing (e.g., switching) the electrical connection between the power source and the heater may affect the state of the heater. For example, switching the electrical connection between the power source and the heater may switch the heater between an on state and an off state. The power source may be a power storage device. For example, the power source may be a battery or a rechargeable battery (e.g., a lithium-ion battery).

[0058] The device may include an input connection (e.g., a USB port, a micro USB port, a USB-C port, etc.). The input connection may be configured to connect to an external power source, such as a power outlet. In some cases, the input connection may be used as a substitute for an internal power source (e.g., a battery or rechargeable battery). In other words, the input connection may be electrically connected to the heater (for providing power to the heater). Thus, in some forms, the input connection may form at least part of the power supply for the device.

[0059] Where the power source comprises a rechargeable power source (eg, a rechargeable battery), the input connection may be used to charge and recharge the power source.

[0060] The device may include a user interface (UI). In some embodiments, the UI may include an input mechanism for receiving operating commands from a user. The input mechanism of the UI may allow a user to control at least one aspect of the operation of the device. In some embodiments, the input mechanism may include a power button to switch the device between an on state and an off state.

[0061] In some embodiments, the UI may additionally or alternatively include an output mechanism to convey information to the user. In some embodiments, the output mechanism may include a light to indicate the status of the device (and / or aerosol-forming article) to the user. The status of the device (and / or aerosol-forming article) indicated to the user may include an indication of the status of the operation of the heater. For example, the status may include whether the heater is in an off state or an on state. In some embodiments, the UI unit may include at least one of a button, a display, a touch screen, a switch, a light, etc. For example, the output mechanism may include one or more (e.g., two, three, four, etc.) light emitting diodes ("LEDs") that may be located on the body of the device.

[0062] The device may also include a suction sensor (e.g., an airflow sensor) that forms part of the input mechanism of the UI. The suction sensor may be configured to detect the end (i.e., the terminal (mouth) end) at which the user inhales the aerosol-forming article. The suction sensor may, for example, be a pressure sensor or a microphone. The suction sensor may be configured to generate a signal indicating a suction state. The signal may indicate that the user inhales (the aerosol from the aerosol-forming article), such that it is, for example, in the form of a binary signal. Alternatively or additionally, the signal may indicate the characteristics of the suction (e.g., the flow rate of the suction, the length of time of the suction, etc.).

[0063] The device may include a controller, or may be connected to a controller, which may be configured to control at least one function of the device. The controller may include, for example, a microcontroller that may be mounted on a printed circuit board (PCB). The controller may also include a memory, such as a non-volatile memory. The memory may include instructions that, when implemented, may cause the controller to perform certain tasks or steps of the method. In the case where the device includes an input connection, the controller may be connected to the input connection.

[0064] The controller may be configured to control the operation of the heater (and, for example, the heating element). Thus, the controller may be configured to control vaporization of an aerosol-forming portion of an aerosol-forming article engaged with the device. The controller may be configured to control the voltage applied to the heater by the power supply. For example, the controller may be configured to switch between applying the full output voltage (of the power supply) to the heater and applying no voltage to the heater. Alternatively or additionally, the control unit may implement a more complex heater control protocol.

[0065] The device may further comprise a voltage regulator to regulate the output voltage supplied by the power supply to form a regulated voltage. The regulated voltage may then be applied to the heater.

[0066] In some embodiments where the device includes a UI, the controller may be operably connected to one or more components of the UI. The controller may be configured to receive command signals from an input mechanism of the UI. The controller may be configured to control the heater in response to the command signals. For example, the controller may be configured to receive "on" and "off" command signals from the UI, and in response, the heater may be controlled so as to be in a corresponding on or off state.

[0067] The controller may be configured to send an output signal to a component of the UI. The UI may be configured to communicate information to a user via an output mechanism in response to such an output signal (received from the controller). For example, where the device includes one or more LEDs, the LEDs may be operably connected to the controller. Thus, the controller may be configured to control the illumination of the LEDs (e.g., in response to the output signal). For example, the controller may be configured to control the illumination of the LEDs according to the (e.g., on or off) state of the heater.

[0068] Where the device comprises a sensor (e.g. a puff / airflow sensor), the controller may be operably connected to the sensor. The controller may be configured to receive a signal from the sensor (e.g. indicating a state of the device and / or an engaged aerosol-forming article). The controller may be configured to control an aspect of the heater or output mechanism based on the signal from the sensor.

[0069] The device may include a wireless interface configured to communicate wirelessly with an external device (e.g., via Bluetooth (e.g., Bluetooth low energy connection) or Wi-Fi). Similarly, the input connection may be configured as a wired connection with an external device to provide communication between the device and the external device.

[0070] The external device may be a mobile device. For example, the external device may be a smart phone, a tablet, a smart watch, or a smart car. An application (e.g., an app) may be installed on the external device (e.g., a mobile device). The application may facilitate communication between the device and the external device via a wired connection or a wireless connection.

[0071] The wireless interface or wired interface can be configured to transmit signals between the external device and the controller of the device. At this point, the controller can control an aspect of the device in response to a signal received from the external device. Alternatively or additionally, the external device can respond to a signal received from the device (e.g., from the controller of the device).

[0072] In a third aspect, a system (e.g., a smoking replacement system) is provided, comprising the apparatus according to the first aspect and an aerosol-forming article. The aerosol-forming article may comprise an aerosol-forming substrate at the upstream end of the aerosol-forming article. The article may be in the form of a smoking replacement article, such as a heated tobacco (HT) consumable (also known as a heat-not-burn (HNB) consumable).

[0073] As used herein, the terms "upstream" and "downstream" are intended to refer to the direction of flow of the vapor / aerosol, i.e. the downstream end of the article / consumable is the mouth end or outlet where the aerosol leaves the consumable for inhalation by the user. The upstream end of the article / consumable is the end opposite the downstream end.

[0074] The aerosol-forming substrate is capable of being heated to release at least one volatile compound that can form an aerosol.The aerosol-forming substrate may be located at the upstream end of the article / consumable product.

[0075] In order to generate an aerosol, the aerosol-forming substrate comprises at least one volatile compound which is intended to be vaporized / aerosolized and which, when inhaled, can provide a recreational and / or medical effect to the user. Suitable chemically and / or physiologically active volatile compounds include: nicotine, cocaine for medical effect, caffeine, opium and opioids for medical effect, theophylline and cathinones, kavalactones, mysticin, β-carboline alkaloids, salvinorin A, and any combination and / or synthetic substitutes functionally equivalent to the foregoing.

[0076] The aerosol-forming substrate may include plant materials. The plant material may include at least one plant material selected from the following list: Amaranthus dubius, Arctostaphylos uva-ursi, Bearberry, Argemone mexicana, Amica, Artemisia vulgaris, Yellow Tees, Galea zacatechichi, Canavalia maritima, Baybean, Cecropia mexicana, Guamura, Cestrum noctumum, Cynoglossum virginianum, wild comfrey, Cytisus scoparius, Damiana, Entada rheedii, Eschscholzia califomica, California Poppy), Fittonia albivenis, Hippobroma longiflora, Japanese Hops (Humulus japonica), Hops (Humulus lupulus), Lettuce Opium (Lactucavirosa), Laggera alata, Leonotis leonurus, Motherwort (Leonurus cardiaca), Honeyweed (Leonurus sibiricus), Lobelia cardinalis, Lobelia inflata (Indian-tobacco), Lobelia siphilitica, Nepeta cataria (Catnip), Nicotiana species (Nicotiana species), White Lily (Nymphaea alba), Blue Water Lily (Nymphaeacaerulea), Lily), Opium poppy for medical purposes, Passifloraincamata (Passionflower), Pedicularis densiflora (Pedicularis densiflora,Indian Warrior), Pedicularis groenlandica (Elephant's Head), Salvia divinorum, Salvia dorrii (Tobacco Sage), Salvia species (Sage), Scutellaria galericulata, Scutellaria lateriflora, Scutellaria nana, Scutellaria species (Skullcap), Sida acuta (Wireweed), Sidarhombifolia, Silene capensis, Syzygium aromaticum (Clove), Tagetes lucida (Mexican Marigold), Tarragon), Tarchonanthuscamphoratus, Tumeradiffusa, Damiana, Verbascum, Mullein, Zamia latifolia, Maconha Brava, and any combination and / or synthetic substitutes equivalent to the above functions.

[0077] The plant material can be tobacco. Any type of tobacco can be used. This includes, but is not limited to, flue-cured tobacco, burley tobacco, Maryland tobacco, dark air-cured tobacco, spice tobacco, dark smoked tobacco, perique tobacco, and rustica tobacco. This also includes blends of the above tobaccos.

[0078] The tobacco may include one or more of tobacco leaves, tobacco stems, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogenized tobacco, shredded tobacco, extruded tobacco, cut tobacco and / or reconstituted tobacco (eg, pulp-based or paper-based).

[0079] The aerosol-forming substrate may comprise collected homogenised (eg paper / pulp reconstituted) tobacco sheets or collected shreds / rods formed from such sheets.

[0080] The aerosol-forming substrate may comprise one or more additives selected from humectants, flavourings, fillers, aqueous / non-aqueous solvents and binders.

[0081] The flavoring agent may be provided in solid or liquid form. It may include menthol, liquorice, chocolate, fruit flavors (including, for example, citrus, cherry, etc.), vanilla, spices (e.g., ginger, cinnamon), and tobacco flavors. The flavoring agent may be uniformly dispersed throughout the aerosol-forming substrate, or may be provided in separate locations and / or varying concentrations throughout the aerosol-forming substrate.

[0082] The aerosol-forming substrate may be formed substantially cylindrically so that the article / consumable resembles a conventional cigarette. Its diameter may be from 5 mm to 10 mm, for example from 6 mm to 9 mm or from 6 mm to 8 mm, for example about 7 mm. Its axial length may be from 10 mm to 15 mm, for example from 11 mm to 14 mm, for example about 12 mm or 13 mm.

[0083] The article / consumable may comprise at least one filter element. There may be a terminal filter element at the downstream / mouth end of the article / consumable.

[0084] The filter element or at least one filter element (e.g. a terminal filter element) may consist of cellulose acetate or polypropylene tow. The at least one filter element (e.g. a terminal filter element) may consist of activated carbon. The at least one filter element (e.g. a terminal element) may consist of paper. The or each filter element may be at least partially (e.g. completely) surrounded by a filter rod wrap (e.g. a paper filter rod wrap).

[0085] The terminal filter element (at the downstream end of the product / consumable) may be connected to an upstream element forming the product / consumable by surrounding a tipping layer (e.g. a layer of tipping paper). The axial length of the tipping paper may be longer than the axial length of the terminal filter element, so that the tipping paper completely surrounds the terminal filter element and around the wrapping layer of any adjacent upstream element.

[0086] In some embodiments, the article / consumable may comprise an aerosol-cooling element adapted to cool the aerosol generated by the aerosol-forming substrate (by heat exchange) prior to inhalation by a user.

[0087] The article / consumable may comprise a spacer element defining a space or cavity between the aerosol-forming substrate and the downstream end of the consumable. The spacer element may comprise a cardboard tube. The spacer element may be surrounded by a (paper) wrapping layer.

[0088] In a fourth aspect, there is provided a kit comprising the apparatus according to the first aspect and the tool according to the second aspect.

[0089] The invention includes any combination of aspects and preferred features described, unless such a combination is obviously impossible or clearly avoided.

[0090] Those skilled in the art will appreciate that, unless mutually exclusive, the features or parameters described in any one of the above aspects may be applicable to any other aspects. In addition, unless mutually exclusive, any features or parameters described herein may be applicable to any aspect and / or combined with any other features or parameters described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0091] In order that the present invention may be understood, and in order that other aspects and features of the present invention may be appreciated, embodiments illustrating the principles of the present invention will now be discussed in more detail with reference to the accompanying drawings, in which:

[0092] Figure 1 is a schematic diagram of the smoking replacement system;

[0093] Figure 2A is a front view of a first embodiment of a smoking replacement system in which a consumable is engaged with the device;

[0094] Figure 2B is a front view of a first embodiment of a smoking replacement system in which the consumable is detached from the device;

[0095] Figure 2C is a cross-sectional view of a consumable product of a first embodiment of a smoking replacement system;

[0096] Figure 2D is a detailed view of an end portion of a device of a first embodiment of a smoking replacement system;

[0097] Figure 2E is a cross-sectional view of a first embodiment of a smoking replacement system; and

[0098] Figure 3 is a perspective view of a first embodiment of the alternative smoking system with the cap in a second position.

[0099] Figure 4A is a cross-sectional view of a first embodiment of a smoking replacement system with the cap in a first position.

[0100] Figure 4B is a cross-sectional view of the first embodiment of the smoking replacement system with the cap in the second position.

[0101] Figure 5A is a perspective view of a tool according to an embodiment.

[0102] Figure 5B is the one with the first cover removed Figure 5A Perspective view of the tools.

[0103] Figure 5C The second cover is removed. Figure 5A Perspective view of the tools.

[0104] Fig. 6A is a cross-sectional view of a first embodiment in which a tool is inserted in a cavity in an inserted position.

[0105] Figure 6B is a cross-sectional view of a first embodiment with a tool inserted in the cavity in an unlocked position.

[0106] Figure 7 (a) to Figure 7 (e) illustrates the stage where the cap is separated from the main body of the smoking replacement device of the first embodiment using a tool. DETAILED DESCRIPTION

[0107] Aspects and embodiments of the present invention will now be discussed with reference to the accompanying drawings. Other aspects and embodiments will be apparent to those skilled in the art. All documents mentioned herein are incorporated herein by reference.

[0108] Figure 1 is a schematic diagram providing a general overview of a smoking replacement system 100. The system 100 comprises an alternative smoking device 101 and an aerosol-forming article in the form of a consumable 102, the consumable 102 comprising an aerosol precursor 103. The system is configured to vaporize the aerosol precursor 103 by heating the aerosol precursor 103 (so as to form a vapor / aerosol for inhalation by a user).

[0109] In the illustrated system, the heater 104 forms part of the device 101 and is configured to heat the aerosol precursor 103. The heat from the heater 104 vaporizes the aerosol precursor 103 to produce a vapor. The vapor then condenses to form an aerosol, which is ultimately inhaled by the user.

[0110] The system 100 also includes a power source 105 that forms part of the device 101. In other embodiments, the power source 105 may be external to the device 101 (but connectable to the device 101). The power source 105 may be electrically connected to the heater 104 so that it can supply power to the heater 104 (i.e., for the purpose of heating the aerosol precursor 103). Thus, control of the electrical connection of the power source 105 to the heater 104 provides control over the state of the heater 104. The power source 105 may be a power storage device, such as a battery or a rechargeable battery (e.g., a lithium-ion battery).

[0111] The system 100 further includes an I / O module that includes a connector 106 (e.g., in the form of a USB port, a micro USB port, a USB-C port, etc.). The connector 106 is configured to connect to an external power source, such as a power outlet. The connector 106 can be used in place of the power source 105. In other words, the connector 106 can be electrically connected to the heater 104 to provide power to the heater 104. In such embodiments, the device may not include a power source, and the power source of the system may instead include the connector 106 and the external power source (the connector 106 provides an electrical connection to the external power source).

[0112] In some embodiments, where the power source 104 includes a rechargeable battery, the connector 106 can be used to charge and recharge the power source 105 .

[0113] The system 100 also includes a user interface (UI) 107. Although not shown, the UI 107 may include an input mechanism for receiving commands from a user. The input mechanism of the UI 107 allows the user to control at least one aspect of the operation of the system 100. The input mechanism may be, for example, in the form of a button, a touch screen, a switch, a microphone, etc.

[0114] UI 107 also includes an output mechanism for conveying information to the user. The output mechanism may, for example, include a light (eg, an LED), a display screen, a speaker, a vibration generator, and the like.

[0115] The system 100 also includes a controller 108 configured to control at least one function of the device 101. In the illustrated embodiment, the controller 108 is a component of the device 101, but in other embodiments, the controller 108 may be separate from the device 101 (but connectable to the device 101). The controller 108 is configured to control the operation of the heater 104, and, for example, may be configured to control the voltage applied to the heater 104 from the power supply 105. The controller 108 may be configured to switch the power supply to the heater 105 between an on state (in which the full output voltage of the power supply 105 is applied to the heater 104) and an off state (in which no voltage is applied to the heater 104).

[0116] Although not shown, the system 100 also includes a voltage regulator that regulates the output voltage from the power supply 105 to form a regulated voltage. The regulated voltage can then be applied to the heater 104.

[0117] In addition to being connected to the heater 104, the controller 108 is operably connected to the UI 107. Thus, the controller 108 can receive input signals from the input mechanism of the UI 107. Similarly, the controller 108 can transmit output signals to the UI 107. In response, the output mechanism of the UI 107 can convey information to the user based on the output signals.

[0118] Figure 2A and Figure 2B A heated tobacco (HT) smoking alternative system 200 is shown. The system 200 is about Figure 1 The system 200 includes an HT device 201 and HT consumables 202. Figure 1 Description applies to Figure 2A and Figure 2B system 200 and therefore will not be repeated.

[0119] The device 201 and the consumable 202 are configured such that the consumable 202 can be engaged with the device 201 . Figure 2A The device 201 and consumable 202 are shown in an engaged state, and Figure 2B The device 201 and consumable 202 are shown in a disengaged state.

[0120] The device 201 comprises a body 209 and a cap 210. In use, the cap 209 is engaged at the end of the body 209. Although not apparent in the drawings, the cap 210 is movable relative to the body 209. In particular, the cap 210 is slidable and can slide along the longitudinal axis of the body 209.

[0121] like Figure 7 As shown in (e), the body 209 defines a transverse cavity 227 extending perpendicular to the longitudinal axis of the body 209. The transverse cavity 227 forms an opening through a first side wall of the body 209 and extends from the first side wall of the body 209 toward at least a portion of the heating element and surrounds at least a portion of the heating element. The transverse cavity 227 is located on the body 209 so that at least a base 228 of the heating element is juxtaposed with the transverse cavity 227. The transverse cavity 227 extends from the first side wall of the body 209 to and through a second side wall opposite the first side wall of the body 209. In other words, the transverse cavity 227 forms a through hole extending through the body 209.

[0122] The device 201 includes an output mechanism (forming part of the UI of the device 201) in the form of a plurality of light emitting diodes (LEDs) 211 arranged linearly along the longitudinal axis of the device 201 and on an outer surface of a body 209 of the device 201. A button 212 is also arranged on the outer surface of the body 209 of the device 201 and is axially spaced from the plurality of LEDs 211 (i.e., along the longitudinal axis).

[0123] Figure 2C Shown is a detailed cross-sectional view of the consumables 202 of system 200. The consumables 202 are generally similar to cigarettes. In this regard, the consumables 202 have a diameter of 7mm and an axial length of 70mm in a roughly cylindrical shape. The consumables 202 include an aerosol-forming substrate 213, a terminal filter element 214, an upstream filter element 215, and a spacing element 216. In other embodiments, the consumables may also include a cooling element. The cooling element may exchange heat with the steam formed by the aerosol-forming substrate 213 to cool the steam, thereby promoting the condensation of the steam.

[0124] The aerosol-forming substrate 213 is substantially cylindrical and is located at the upstream end 217 of the consumable 202 and contains the aerosol precursor of the system 200. In this regard, the aerosol-forming substrate 213 is configured to be heated by the device 201 to release a vapour. The released vapour is then entrained in an airflow passing through the aerosol-forming substrate 213. The airflow is generated by the action of a user drawing on the downstream end 218 (i.e. the terminal end or mouth) of the consumable 202.

[0125] In the present embodiment, aerosol forms substrate 213 and comprises tobacco material, and the tobacco material can for example comprise any suitable part (for example leaf, stem, root, bark, seed and flower) of tobacco plant.Tobacco can comprise one or more tobacco leaf, tobacco stem, cigarette powder, cigarette end, tobacco derivative, expanded tobacco, homogenized tobacco, tobacco shred, extruded tobacco, shredded tobacco and / or reconstituted tobacco (for example pulp method reconstituted or paper method reconstituted).For example, aerosol forms substrate 213 and can comprise the fragment / strip of the collection of homogenized (for example paper method / pulp method reconstituted) tobacco sheet or the collection formed by such sheet.

[0126] To generate an aerosol, the aerosol-forming substrate 213 comprises at least one volatile compound that is intended to be vaporized / aerosolized and that can provide a recreational and / or medical effect to the user when inhaled. The aerosol-forming substrate 213 may also comprise one or more additives. For example, such additives may be in the form of humectants (e.g., propylene glycol and / or vegetable glycerin), flavoring agents, fillers, aqueous / non-aqueous solvents, and / or binders.

[0127] The terminal filter element 214 is also substantially cylindrical and is positioned at the downstream end 218 of the consumable 202 downstream of the aerosol-forming substrate 213. The terminal filter element 214 is in the form of a hollow pore filter element having a hole 219 (e.g., for airflow) formed therethrough. The diameter of the hole 219 is 2 mm. The terminal filter element 214 is formed by a porous (e.g., monoacetate) filter material. As described above, the downstream end 218 of the consumable 202 (i.e., where the terminal filter 214 is positioned) forms the nozzle portion of the consumable 202 that the user inhales. The airflow is sucked from the upstream end 217 through the components of the consumable 202 and leaves the downstream end 218. The airflow is driven by the user inhaling the downstream end 218 (i.e., the nozzle portion) of the consumable 202.

[0128] The upstream filter element 215 is located between the aerosol-forming substrate 213 and the terminal filter element 214, and is axially adjacent to the aerosol-forming substrate 213. Similar to the terminal filter 214, the upstream filter element 215 is in the form of a hollow pore filter element, so that it has a hole 220 extending axially through it. In this way, the upstream filter 215 can be used as an airflow restrictor. The upstream filter element 215 is formed of a porous (e.g., monoacetate) filter material. The pores 220 of the upstream filter element 214 have a larger diameter (3 mm) than the terminal filter element 214.

[0129] The spacer 216 is in the form of a cardboard tube which defines a cavity or chamber between the upstream filter element 215 and the terminal filter element 214. The spacer 216 serves to allow cooling and mixing of the vapour / aerosol from the aerosol-forming substrate 213. The spacer has an outer diameter of 7 mm and an axial length of 14 mm.

[0130] Although not apparent in the drawings, the aerosol-forming substrate 213, the upstream filter 215 and the spacer 216 are surrounded by a paper wrap. The terminal filter 214 is surrounded by a tipping layer, which also surrounds a portion of the paper wrap (so as to connect the terminal filter 214 to the remaining components of the consumable 202). The upstream filter 215 and the terminal filter 214 are surrounded by other wrapping layers in the form of a filter plug wrap.

[0131] Now reviewing the device 201, Figure 2D Detailed view of an end portion of a device 201 configured to engage a consumable 202 is illustrated. The cap 210 of the device 201 includes an opening 221 ( Figure 2D 221 and cavity 222 are formed to accommodate at least a portion of consumable 202. During engagement of consumable 202 with device 201, a portion of consumable 202 is accommodated through opening 221 and enters cavity 222. After engagement (see Figure 2B ), the downstream end 218 of the consumable 202 protrudes from the opening 221 and therefore also from the device 201. The opening 221 includes laterally arranged notches 226. When the consumable 202 is accommodated in the opening 221, these notches 226 remain open and can, for example, be used to hold a cover to cover the end of the device 201.

[0132] Figure 2E A cross section through a central longitudinal plane of the device 201 is shown. The device 201 is shown as a consumable 202 engaged therewith. In addition, as shown, at least one locking arm 229 extends from the body 209. The locking arm 229 locks or holds the cap 210 with the body 209. In the illustrated embodiment, there are two locking arms 229. In an embodiment, any suitable number of locking arms 229 can be provided. As shown, the locking arm 229 extends substantially along the longitudinal axis of the body 209. The locking arm 229 is provided with a locking projection 231 at a distal end (i.e., an end away from the end of the locking arm 229 connected to the body 209). The locking projection 231 extends transversely to the longitudinal axis of the body 209. The locking arm 229 is positioned so that when the cap 210 is mounted on the body 209, the locking arm 229 engages the cap 210 to hold the cap 210 on the body 209.

[0133] In the embodiment shown, the cap 210 can be provided with a slot 232 extending along the longitudinal axis of the body 209 (when the cap 210 is retained on the body 209), and the locking projection 231 can be configured or positioned to engage the slot 232. The slot 232 can be elongated so that the cap 210 can move or slide relative to the body 209 along the longitudinal axis of the body 209. The locking projection 231 can have an abutment surface 233 to engage an outer peripheral surface 234 of the cap 210 defining the slot 232. The abutment surface 233 can block the movement of the cap 210 in one direction by abutting the outer peripheral surface 234 to retain or lock the cap 210 with the body 209.

[0134] The cap 210 is movable between a first position and a second position. Figure 2A , Figure 2B and Figure 2D as well as Figure 4A The device 200 is illustrated with the cap 210 in a first position. When the cap 210 is in the first position, the cap 210 conceals the heating element 223, as shown. In the first position, the cap 210 completely covers the transverse cavity 227 to conceal the heating element 223.

[0135] Figure 3 and Figure 4BThe device 200 is illustrated with the cap 210 in the second position. When the cap 210 is in the second position, the cap 210 at least partially exposes the heating element 223. In the second position, the cap 210 does not cover the transverse cavity 227 to partially expose the heating element 223. When the heating element 223 is partially exposed, the heating element 223 can be visually inspected to determine whether the heating element 223 needs to be cleaned. If necessary, when the cap 210 is in the second position, the heating element 223 can be cleaned by blowing air through the opening or simply shaking, tilting and / or gently tapping the device to dislodge and remove loose debris. In the second position, the abutment surface 233 of the cap 210 can abut the peripheral surface 234, as discussed in the foregoing description.

[0136] The device 201 includes a heater 204 including a heating element 223. The heater 204 forms part of the body 209 of the device 201 and is securely mounted to the body 209. In the illustrated embodiment, the heater 204 is a rod-shaped heater in which the heating element 223 has a circular transverse profile. In other embodiments, the heater may be in the form of a blade-shaped heater (e.g., a heating element having a rectangular transverse profile) or a tubular heater (e.g., a heating element having a tubular shape).

[0137] The heating element 223 of the heater 204 protrudes along the longitudinal axis from the inner base of the cavity 222 toward the opening 221. As is apparent from the drawings, the length of the heating element (i.e., along the longitudinal axis) is less than the depth of the cavity 222. In this way, the heating element 223 does not protrude from the opening 221 or extend beyond the opening 221.

[0138] When the consumable product 202 is contained in the cavity 222 (e.g. Figure 2E ), the heating element 223 penetrates the aerosol-forming substrate 213 of the consumable 202. In particular, when the heating element 223 is inserted therein, the heating element 223 extends over almost the entire axial length of the aerosol-forming substrate 213. Therefore, when the heater 204 is activated, heat is radially transferred from the outer peripheral surface of the heating element 223 to the aerosol-forming substrate 213.

[0139] The smoking replacement system of the present disclosure may further include a tool 235 for separating the cap 210 from the body 209. The tool 235 may be configured to displace the locking arm 229 to enable the cap 210 to be separated from the body 209. Figure 5A , Figure 5B and Figure 5CThe tool 235 according to the embodiment is illustrated. The tool 235 has at least one unlocking arm 230. In the embodiment as illustrated, two unlocking arms 230 are provided. The number of unlocking arms 230 can be provided as needed. In the embodiment, the number of unlocking arms 230 can correspond to the number of locking arms 229. The unlocking arm 230 is suitable for engaging the locking arm 229 to displace the locking arm 229 for separating the cap 210 from the body 209. Each unlocking arm 230 can be provided with an unlocking protrusion 236. The unlocking protrusion 236 can extend in a direction perpendicular to the longitudinal axis of the unlocking arm 230. The unlocking protrusion 236 is suitable for engaging the locking protrusion 231 to displace the locking protrusion 231 for disengaging the cap 210 from the body 209.

[0140] The tool 235 may include a center rod 237. A collar 238 may be concentrically positioned around the center rod 237. The collar 238 may be movably placed on the rod so that the collar 238 moves relative to the center rod 237 along the longitudinal axis of the center rod 237. The unlocking arm 230 may extend from the collar 238 along the longitudinal axis of the center rod 237. The collar 238 may be movable on the center rod 237 between an inserted position and an unlocked position. In the inserted position, the center rod 237 may be held away from the unlocking protrusion 236, and the unlocking arm 230 may be bent radially inward relative to the longitudinal axis of the center rod 237. In the unlocking position, the center rod 237 may be held away from the unlocking protrusion 236, and the unlocking arm 230 may be bent radially inward relative to the longitudinal axis of the center rod 237. Figure 5B and Fig. 6A , the collar 238 is shown in the inserted position. In the unlocked position, the central rod 237 and the unlocking projection 236 move in parallel to prevent the unlocking arm 230 from bending in a radially inward direction relative to the longitudinal axis of the central rod 237. Figure 6B The collar 238 is shown in the unlocked position. Appropriate arrangements may be provided on the collar 238 and the rod to allow and / or guide movement of the collar 238 between the inserted position and the unlocked position. The collar 238 may be biased to move toward the inserted position using any suitable means (e.g., a coil spring).

[0141] like Figure 7 (a) to Figure 7As shown in (e), the tool 235 can be configured to be inserted into the cavity 222. The unlocking protrusion 236 is configured so that when the unlocking arm 230 is inserted into the cavity 222, the unlocking arm 230 displaces the locking arm 229 to disengage the locking arm 229 from 232. In the embodiment as shown, the unlocking protrusion 236 is configured so that when inserted into the cavity 222, the unlocking protrusion 236 enters the groove 232 defined in the cap 210 to displace the locking protrusion 231 so as to remove the cap 210 from the body 209. The unlocking protrusion 236 can have a size that interferes with the width of the cavity 222. Therefore, in order to allow the unlocking arm 230 to be inserted into the cavity 222, in the inserted position, the center rod 237 is away from the distal end of the unlocking arm 230 to allow the distal end of the unlocking arm 230 to be bent radially inward, so that the unlocking arm 230 with the unlocking protrusion 236 can be inserted into the cavity 222. Flexion can be achieved when the unlocking projection 236 abuts and slides against the inner surface 239 of the cap 210 defining the inner cavity 222. As shown in the illustrated embodiment, the unlocking projection 236 can be provided with a tapered surface 240 to guide the bending movement of the unlocking arm 230 in and out of the cavity 222 and the slot 232. Figure 7 (a) shows the tool 235 inserted in the cavity 222, with the collar 238 in the inserted position.

[0142] In the initial stage, the tool 235 can be pushed toward the body 209 (eg Fig. 6A 222) to insert the unlocking arm 230 into the cavity 222 until the collar 238 abuts against the opening of the cavity 222, as shown in the direction arrow in FIG. Fig. 6A and Figure 7 (b). At this stage, Fig. 6A As shown in , the unlocking arm 230 enters the slot 232 defined in the cap 210. At this stage, the unlocking projection 236 may not completely displace the locking projection 231, as required to separate the cap 210. In addition, as shown in FIG. 6( c), the center rod 237 can be pushed into the cavity 222 to move the collar 238 (relative to the center rod 237) to the unlocked position. When the center rod 237 is pushed, the unlocking projection 236 can be pushed radially outward to properly enter the slot 232 and occupy the slot 232, as shown in FIG. Figure 6B , the locking projections 231 are displaced and moved radially outwardly (as indicated by the arrows) to remove them from the grooves 232. Thereafter, as shown in Figure 7 As shown in (d), the cap 210 together with the tool 235 can be pulled away from the body 209 to separate the cap 210 from the body 209. Figure 7 (e) illustrates the cap 210 completely separated from the body 209.

[0143] The tool 235 may also have a cleaning device for cleaning the heating element 223. Figure 5CAs shown in , the cleaning device can be in the form of cleaning bristles 241. Figure 5C As shown in , the cleaning bristles 241 can extend from the central rod 237 in a direction opposite to the extension direction of the unlocking arm 230. The cleaning bristles 241 can rub on the outer surface of the heating element 223 to clean or remove any debris or residue from the heating element 223.

[0144] The tool 235 may include a first cover 242 to cover the unlocking arm 230 when not in use. In addition, a second cover 243 may be provided to cover the cleaning bristles 241 when not in use. The covers 242, 243 may be designed so that the tool 235 may be visually similar to a consumable for a smoking replacement system. Suitable means may be provided to hold the cover on the tool 235.

[0145] The device 202 also includes an electronics cavity 224. A power source in the form of a rechargeable battery 205 (a lithium-ion battery) is located in the electronics cavity 224.

[0146] The device 202 includes a connector in the form of a USB port 206 (ie forming part of the I / O module of the device 201 ). Alternatively, the connector may be, for example, a micro USB port or a USB-C port. The USB port 206 may be used to charge the rechargeable battery 205 .

[0147] Device 202 includes a controller (not shown) located in electronics cavity 224. The controller includes a microcontroller mounted on a printed circuit board (PCB). USB port 206 is also connected to controller 208 (ie, to the PCB and microcontroller).

[0148] The controller 208 is configured to control at least one function of the device 202. For example, the controller 208 is configured to control the operation of the heater 204. Such control of the operation of the heater 204 can be achieved by the controller switching the electrical connection between the rechargeable battery 205 and the heater 204. For example, the controller is configured to control the heater 204 in response to the user pressing the button 212. Pressing the button 212 can cause the controller to allow voltage (from the rechargeable battery 205) to be applied to the heater 204 (so as to cause the heating element 223 to heat).

[0149] The controller is also configured to control the LED 211 in response to (e.g., detecting) the state of the device 201 or the consumable 202. For example, the controller can control the LED to indicate whether the device 201 is in an on state or an off state (e.g., when the device is in an on state, one or more LEDs can be illuminated by the controller).

[0150] The device 202 also includes an input mechanism in the form of a suction sensor 225 (i.e., in addition to the button 212). The suction sensor 225 is configured to detect a user suction (i.e., inhalation) at the downstream end 218 of the consumable 202. The suction sensor 225 can, for example, be in the form of a pressure sensor, a flow meter, or a microphone. The suction sensor 225 is operably connected to the controller 208 in the electronics cavity 224, so that a signal from the suction sensor 225 indicating the suction state (i.e., suction or non-suction) forms an input to the controller 208 (and can therefore be responded to by the controller 208).

[0151] The features disclosed in the foregoing description, or in the appended claims or in the drawings, expressed in their specific form or as means for performing the disclosed functions, or as methods or processes for obtaining the disclosed results, as the case may be, may be used alone or in any combination of such features to realize the invention in its various forms.

[0152] Although the present invention has been described in conjunction with the above exemplary embodiments, many equivalent modifications and variations will be apparent to those skilled in the art when present disclosure is given. Therefore, the exemplary embodiments of the present invention set forth above are considered to be illustrative rather than restrictive. Various changes may be made to the described embodiments without departing from the spirit and scope of the present invention.

[0153] For the avoidance of any doubt, any theoretical explanations provided herein are provided for the purpose of enhancing the reader's understanding. The inventors do not wish to be bound by any of these theoretical explanations.

[0154] Any section headings used herein are for organizational purposes only and are not to be construed as limiting the subject matter described.

[0155] Throughout the specification, including the appended claims, unless the context requires otherwise, the words "have", "comprise" and "include" and variations such as "having", "comprises", "comprising" and "including", will be understood to imply the inclusion of the stated integer or steps or groups of integers or steps but not the exclusion of any other integer or steps or groups of integers or steps.

[0156] It should be noted that, as used in the specification and the appended claims, the singular forms "a", "an", and "the" include plural references unless the context clearly dictates otherwise. Ranges may be expressed herein as from "about" one particular value and / or to "about" another particular value. When a range is expressed in this manner, another embodiment includes from one particular value and / or to the other particular value. Similarly, when a value is expressed as an approximation by use of the antecedent "about", it is understood that the particular value forms another embodiment. The term "about" in relation to a numerical value is optional and means, for example, + / - 10%.

[0157] As used herein, the words "preferred" and "preferably" refer to embodiments of the invention that may provide certain benefits under certain circumstances. However, it should be understood that other embodiments may also be preferred, under the same or different circumstances. Therefore, the recitation of one or more preferred embodiments does not mean or imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the present disclosure or the scope of the claims.

Claims

1. Smoking substitute devices, including: main body; a heating element extending from the body; a cap removably connected to the body, the cap being movable along the longitudinal axis of the body between a first position and a second position, wherein the body defines a transverse cavity having an opening through a first side wall of the body, the transverse cavity being juxtaposed with a base of the heating element, wherein, in the first position, the cap covers the opening so that the heating element is hidden in the cap, wherein, in the second position, the base of the heating element is at least partially exposed through the opening, and The cap is retained on the body in the second position by a retaining mechanism.

2. The smoking substitute device of claim 1, wherein the retaining mechanism comprises: at least one flexible locking arm extending from the body; as well as A locking projection is disposed on the at least one locking arm, the locking projection being configured to engage a slot defined in the cap to retain the cap on the body.

3. The smoking replacement device of claim 2, wherein the locking projection is retained in the slot when the cap moves between the first position and the second position.

4. The smoking replacement device of claim 1, wherein the transverse cavity extends from the first side wall of the body to and through a second side wall opposite the first side wall.

5. A smoking substitute device as claimed in claim 2 or 3, wherein the locking projection is configured to prevent the cap from being separated from the device by abutting an end of the slot when the cap has been moved to the second position, thereby preventing further movement of the cap.

6. A smoking replacement device according to claim 5, wherein the cap defines a cavity for housing at least a portion of the aerosol-forming article.

7. Smoking replacement system, including: The smoking substitute device according to any one of claims 1 to 4; An aerosol-forming article for use with the smoking replacement device.

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