Smoking Substitution System

Abstract

A heated tobacco device is described. The device includes a heater and a controller configured to operate the heater according to at least two user-selectable operating modes. The operating modes are selectable by a user via a user input means. The heater is adapted to engage a heated tobacco consumable, the heated tobacco consumable including an active ingredient for delivery to a user. The at least two user-selectable operating modes include a first mode in which the heater operates to deliver a first amount of the active ingredient to the user and a second mode in which the heater operates to deliver a second amount of the active ingredient to the user. The second amount of the active ingredient is greater than the first amount of the active ingredient.

Description

[Technical field]

[0001] [1] The present invention relates to smoking substitution systems, and particularly, but not exclusively, to smoking substitution systems including heated tobacco devices. [Background technology]

[0002] [2] Tobacco smoking is generally considered to expose smokers to potentially harmful substances. It is generally believed that significant amounts of potentially harmful substances are produced through the burning of tobacco and / or the heat caused by tobacco combustion, as well as through the burnt tobacco components in the tobacco smoke itself.

[0003] [3] Conventional combustible smoking articles, such as cigarettes, typically include a cylindrical tobacco rod comprising strips of tobacco surrounded by a wrapper, and typically also include a cylindrical filter axially aligned in abutting relationship with the rolled tobacco rod. The filter typically includes a filtration material circumscribed by a plug wrap. The rolled tobacco rod and filter are held together by a rolled strip of tipping paper that circumscribes the entire length of the filter and adjacent portions of the rolled tobacco rod. Conventional cigarettes of this type are used by lighting the end opposite the filter to burn the tobacco rod. The smoker receives mainstream smoke into his or her mouth by drawing on the mouth or filter end of the cigarette.

[0004] [4] The combustion of organic materials such as tobacco is known to produce tar and other potentially harmful by-products. To avoid smoking tobacco, various smoking substitution systems (or "substitute smoking systems") have been proposed.

[0005] [5] Such smoking substitution systems can form part of nicotine replacement therapy aimed at people wishing to quit smoking and overcome their dependence on nicotine.

[0006] [6] Smoking substitution systems include electronic systems that allow a user to simulate the act of smoking by producing an aerosol (also called "vapor") that is drawn into the lungs (inhaled) through the mouth and then exhaled. The inhaled aerosol typically contains nicotine and / or flavorings without or with fewer of the odors and health risks associated with traditional smoking.

[0007] [7] Generally, smoking substitution systems are intended to provide a substitute for the habitual behavior of smoking while providing users with an experience and satisfaction similar to that experienced with traditional smoking and combustible tobacco products. Some smoking substitution systems use smoking substitution articles (also called "consumables") that are designed to resemble a traditional cigarette and are cylindrical in shape with a mouthpiece at one end.

[0008] [8] The popularity and use of smoking-substitution systems has grown rapidly over the past few years. Although originally marketed as aids to assist regular smokers wishing to quit smoking cigarettes, consumers increasingly view smoking-substitution systems as a desirable lifestyle accessory.

[0009] [9] There are several different categories of smoking proxy systems, each of which utilizes a different smoking proxy approach.

[0010]

[10] One approach for smoking substitution systems is the so-called heated tobacco ("HT") approach, in which tobacco (not "e-liquid") is heated or warmed to release vapor. HT is also known as "heat-not-burn" ("HNB"). The tobacco may be leaf tobacco or reconstituted tobacco. The vapor may contain nicotine and / or flavorings. In the HT approach, the intention is that the tobacco is heated without being burned, i.e., the tobacco does not undergo combustion.

[0011]

[11] A typical HT smoking substitution system may include a device and a consumable. The consumable may include tobacco material. The device and consumable may be configured to be physically coupled together. In use, heat may be applied to the tobacco material by a heating element of the device, and airflow through the tobacco material causes components in the tobacco material to be released as vapor. The vapor may also be formed from a carrier in the tobacco material (which may include, for example, propylene glycol and / or vegetable glycerin), as well as volatile compounds released from the tobacco. The released vapor may be entrained in the airflow drawn through the tobacco.

[0012]

[12] As the vapor passes through the consumable (entrained in the airflow) from the point of evaporation to the outlet of the consumable (e.g., the mouthpiece), the vapor cools and condenses to form an aerosol for inhalation by the user. The aerosol typically contains volatile compounds.

[0013]

[13] In HT smoking substitute systems, it is believed that heating, as opposed to burning, tobacco material results in fewer or lower amounts of more harmful compounds typically produced during smoking. As a result, the HT approach can reduce odor and / or health risks that can result from tobacco burning, tobacco combustion, and pyrolytic degradation.

[0014]

[14] Improved designs of smoking proxy systems, especially HT smoking proxy systems, are needed to enhance the user experience and improve the functionality of HT smoking proxy systems.

[0015]

[15] The present disclosure has been devised in view of the above problems. Summary of the Invention

[0016]

[16] Most generally, one aspect of the invention relates to heated tobacco devices capable of operating in different modes, and another aspect of the invention relates to non-combustion heated devices that control vapor production.

[0017]

[17] According to a first aspect of the present invention, there is provided a heated tobacco device including a heater and a controller configured to operate the heater according to at least two user selectable operating modes, the operating modes being selectable by a user via a user input means, the heater being adapted to engage a heated tobacco consumable, the heated tobacco consumable including an active ingredient for delivery to a user, the at least two user selectable operating modes including a first mode in which the heater is operative to deliver a first amount of the active ingredient to the user, and a second mode in which the heater is operative to deliver a second amount of the active ingredient to the user, the second amount of the active ingredient being greater than the first amount of the active ingredient.

[0018]

[18] By providing a heated tobacco device that includes a controller that operates the device in at least two user-selectable modes, the device can be operated in a high intensity mode that provides greater delivery of the consumable active ingredient.

[0019]

[19] Optional features are described below, which may be applied alone or in any combination with any aspect.

[0020]

[20] Optionally, in the second mode, the controller operates the heater to deliver the active ingredient at a faster rate than in the first mode.

[0021]

[21] Optionally, the controller is configured to operate the heater at a first operating temperature in the first mode and at a second operating temperature in the second mode, the second operating temperature being higher than the first operating temperature.

[0022]

[22] Optionally, the controller is configured to operate the heater for a first consumable cycle duration in the first mode and for a second consumable cycle duration in the second mode, the second consumable cycle duration being longer than the first consumable cycle duration.

[0023]

[23] Optionally, the controller is configured to select between at least two operating modes based on a user default mode.

[0024]

[24] Optionally, the controller is configured to allow a user to set a user default mode.

[0025]

[25] Optionally, the controller is configured to set a user default mode based on historical usage of the device.

[0026]

[26] Optionally, the active ingredient is nicotine.

[0027]

[27] Optionally, the device further comprises a consumable detector sensor that detects the type of consumable engaged with the heater or the active ingredient content of the consumable.

[0028]

[28] Optionally, the controller is configured to select between at least two operating modes based on the detected type of consumable or the active ingredient content of the detected type of consumable.

[0029]

[29] Optionally, the user input means includes a button.

[0030]

[30] Optionally, the user input means includes a touch screen.

[0031]

[31] Optionally, the user input means includes a motion sensor that detects predetermined movements of the device.

[0032]

[32] Optionally, the user input means includes a voice recognition means.

[0033]

[33] Advantageously, the controller is configured to enable the device to operate in a second mode based on the type and / or content of the consumable.

[0034]

[34] According to a second aspect of the present invention, there is provided a non-combustion heated device including a heater and a controller, the controller configured to operate the heater to heat an aerosol-forming substrate engaged with the heater to a predetermined operating temperature, the controller configured to operate the heater in at least two modes, the at least two modes including a first mode in which vapour is formed from the aerosol-forming substrate at a first visibility and a second mode in which vapour is formed from the aerosol-forming substrate at a second visibility, the first visibility being lower than the second visibility.

[0035]

[35] By providing a non-combustion heated device that includes a controller that controls the vapor production, it is possible to operate the device in two different modes of vapor production. In the first mode, the vapor produced is less visible. This mode is sometimes referred to as a "stealth mode" because the use of the device is less obvious to an outside observer due to the low visibility of the vapor. In the second mode, the vapor produced is more visible than the first mode.

[0036]

[36] The benefit of operating the device in the first mode is that the flavor intensity and nicotine intensity are increased. Without wishing to be bound by theory, it is believed that when the device operates in a mode that produces less visible vapor, the relative concentrations of nicotine and flavors in the aerosol may be higher. Less visible vapor may also be desirable for users who wish to reduce the amount of visible vapor produced for aesthetic purposes, for example, when in public.

[0037]

[37] The terms "first visibility" and "second visibility" refer to the visibility of vapor produced by an aerosol-forming substrate (e.g., an HNB consumable) during a smoking session, e.g., the visibility of vapor exhaled by a user after inhalation from the aerosol-forming substrate. Such visibility may generally be assessed by visual estimation, but may also be assessed using more precise methods known to those skilled in the art by determining the amount by which the vapor scatters incident light. As defined herein, vapor of higher "visibility" scatters or attenuates incident light to a greater extent, thereby appearing to an observer as being more visible (i.e., "cloudier" or "hazy").

[0038]

[38] Optionally, the controller is configured to operate the heater at a first predetermined operating temperature in the first mode and at a second predetermined operating temperature in the second mode, the first predetermined operating temperature being lower than the second predetermined operating temperature.

[0039]

[39] Controlling the temperature of the heater in different modes is a way to provide different vapor visibility. Without wishing to be bound by theory, it is believed that different evaporation temperatures of nicotine on the one hand and the aerosol-forming substance on the other hand can be utilized to tailor the visibility of the vapor. By selecting a temperature at which a smaller amount of the aerosol-forming substance evaporates from the aerosol-forming substrate, it is possible to reduce the amount of vapor produced, thereby reducing the visibility of the vapor.

[0040]

[40] In some embodiments, the first predetermined operating temperature is at least 25°C, e.g., at least 30°C, at least 35°C, at least 40°C, at least 45°C, at least 50°C, at least 55°C, or at least 60°C lower than the second predetermined operating temperature.

[0041]

[41] In some embodiments, the first predetermined operating temperature is 140-170° C. Within this temperature range, an acceptable level of nicotine is evaporated from the aerosol-forming substrate relative to the amount of other substances (aerosol-forming substances) that contribute to the visibility of the vapor.

[0042]

[42] In some embodiments, the second predetermined operating temperature is greater than 170°C. In some embodiments, the second predetermined operating temperature is at least 180°C, e.g., at least 185°C, at least 190°C, at least 195°C, or at least 200°C. In some embodiments, the second predetermined operating temperature is greater than 170°C and not greater than about 220°C. In some embodiments, the second predetermined operating temperature is between 175°C and 220°C, e.g., between 175°C and 215°C, between 175°C and 210°C, between 180°C and 210°C, between 190°C and 210°C, or between 195°C and 205°C. In some embodiments, the second predetermined operating temperature is about 200°C.

[0043]

[43] In some embodiments, the first predetermined operating temperature is between 140 and 170° C. and the second predetermined operating temperature is greater than 170° C. and less than or equal to about 220° C. In some embodiments, the first predetermined operating temperature is between 140 and 170° C. and the second predetermined operating temperature is at least 200° C.

[0044]

[44] In some embodiments, the controller is configured to vary the pressure drop across the consumable. In some embodiments, the controller is configured to vary the pressure drop across the aerosol-forming article between a first state and a second state, where the pressure drop across the aerosol-forming article in the first state is greater than the pressure drop in the aerosol-forming article in the second state. The greater pressure drop provides a reduced level of visible vapor from the aerosol-forming article, such first state corresponding to a first mode of the device.

[0045]

[45] In some embodiments, the controller is configured to vary the airflow to control the pressure drop based on the selected mode. In some embodiments, the controller is configured to vary the airflow entering the device between a first state and a second state, where the airflow entering the device in the first state is less than the second state.

[0046]

[46] In some embodiments, the controller is configured to vary the airflow such that the pressure drop when in the first mode is greater than the pressure drop when in the second mode.

[0047]

[47] In some embodiments, the controller is configured to detect the type of consumable present in the device when switching between the first and second modes and incorporate this into the parameters of one or more device functions. In other words, the action taken by the controller when switching between modes may depend on the type of consumable present in the device. For example, a particular consumable may require a larger decrease in temperature between the second and first modes to achieve a given reduction in vapor visibility. Similarly, a particular consumable may require a larger increase in pressure drop between the second and first modes to achieve a given reduction in vapor visibility.

[0048]

[48] ​​In some embodiments, the device is adapted to move the heater and the aerosol-forming substrate relative to each other to vary the amount of contact between the heater and the substrate according to the selected mode. Changing the degree of contact between the heater and the aerosol-forming substrate changes the amount of visible vapor produced by the device. The greater the amount of contact between the heater and the substrate, the greater the amount of vapor produced for a given heater temperature. Movement of the heater relative to the aerosol-forming substrate may be achieved by causing movement of the heater, the aerosol-forming substrate, or both. For example, the device may be adapted to move the heater. In some embodiments, the heater is adapted to move linearly along the longitudinal axis of the device, thus changing the degree to which the heater is inserted into the aerosol-forming substrate. In some embodiments, the device is adapted to move the aerosol-forming substrate relative to the heater to provide greater or lesser contact between the heater and the aerosol-forming substrate, as required.

[0049]

[49] Optionally, an amount of contact between the heater and the aerosol-forming substrate in the first mode is less than an amount of contact between the heater and the aerosol-forming substrate in the second mode.

[0050]

[50] In some embodiments, the heater is a rod heater adapted to be inserted into the upstream end of the HNB consumable during a smoking session, and the device is adapted to move the heater and the consumable relative to one another in response to a mode selection to achieve a particular degree of insertion of the heater into the upstream end of the consumable. The device may be adapted to move the heater and the consumable closer to one another in response to a selection of a second mode, thereby increasing visibility of the vapor produced. The device may be adapted to move the heater and the consumable away from one another in response to a selection of a first mode, thereby decreasing visibility of the vapor produced. In some embodiments, in the second mode, a portion of the heater about 10 mm in length is inserted into the consumable. In some embodiments, in the first mode, a portion of the heater about 5 mm in length is inserted into the consumable.

[0051]

[51] In some embodiments, the device includes a user input means for selection of a mode by a user. In some embodiments, the user input means includes a user interface through which a user can select a mode, e.g., the first mode or the second mode. In some embodiments, the user interface includes one or more buttons or switches for selecting a particular mode.

[0052]

[52] In some embodiments, the device further includes an output means configured to indicate to a user the currently selected mode of operation (e.g., the first or second mode). The device may include a display that indicates to a user the currently selected mode. For example, the device may include one or more lights (e.g., LEDs) that illuminate according to the selected mode, or a screen that includes an indication of the selected mode.

[0053]

[53] In some embodiments, the controller is configured to maintain the selected mode for at least one complete smoking cycle, i.e., the time that the heater is activated for smoking a single HNB consumable, ensuring that the user obtains the desired smoking experience over the entire cycle and is not interrupted by any undesirable switching between modes.

[0054]

[54] The device may include an elongated body. An end of the elongated body may be configured to engage an aerosol-forming article. For example, the body may be configured to engage a heated tobacco (HT) consumable (or a heat-not-burn (HNB) consumable). The terms "heat-not-burn" and "heat-not-burn" are used interchangeably herein to describe a type of consumable that is heated rather than combusted (or are used interchangeably to describe a device for use with such a consumable). The device may include a cavity configured to receive (i.e., engage) at least a portion of the consumable. The aerosol-forming article may be of a type that includes an aerosol former (e.g., carried by an aerosol-forming substrate).

[0055]

[55] The device can include a heater for heating the aerosol-forming article. The heater can include a heating element, which can be in the form of a rod extending from a body of the device. The heating element can extend from an end of the body that is configured to engage the aerosol-forming article.

[0056]

[56] The heater (and thus the heating element) may be rigidly attached to the body. The heating element may be elongated to define a longitudinal axis and may, for example, have a substantially circular transverse profile (i.e., transverse to the longitudinal axis of the heating element) (i.e., the heating element may be generally 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 shaped like a tube (i.e., the heater may be a "tubular heater"). The heating element may take other shapes (e.g., the heating element may have an oval transverse profile). The shape and / or size (e.g., diameter) of the transverse profile of the heating element may be generally consistent throughout (or substantially throughout) the length of the heating element.

[0057]

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

[0058]

[58] The heating element may be formed from a ceramic. The heating element may include a core (e.g., a ceramic core) comprising Al2O3. The heating element core may have a diameter of 1.8 mm to 2.1 mm, such as 1.9 mm to 2 mm. The heating element may include an outer layer (e.g., an outer ceramic layer) comprising Al2O3. The outer layer may have a thickness of 160 μm to 220 μm, such as 170 μm to 190 μm, such as about 180 μm. The heating element may include a heating track, which 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 include tungsten and / or rhenium. The heating track may have a thickness of about 20 μm.

[0059]

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

[0060]

[60] The heating element may be configured to be inserted into the aerosol-forming article (e.g., an HT consumable) when the aerosol-forming article is received in the cavity. In that regard, a distal end of the heating element (i.e., distal from a base of the heating element attached 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 received in the cavity, the heating element may fully penetrate the aerosol-forming article. That is, the entire length or substantially the entire length of the heating element may be received in the aerosol-forming article.

[0061]

[61] The heating element may have a length less than or substantially the same as the axial length of the aerosol-forming substrate forming part of the aerosol-forming article (e.g., HT consumable). Thus, when such an aerosol-forming article is engaged with a device, the heating element may penetrate only the aerosol-forming substrate and not 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., its outer circumferential surface) to the surrounding aerosol-forming substrate. That is, 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).

[0062]

[62] When the heater is a tubular heater, the heating element of the tubular heater can surround at least a portion of the cavity. When a portion of the aerosol-forming article is received in the cavity, the heating element can surround (i.e. heat) a portion of the aerosol-forming article. In particular, the heating element can surround an aerosol-forming substrate of the aerosol-forming article. That is, when the aerosol-forming article is engaged with the device, the aerosol-forming substrate of the aerosol-forming article can be located adjacent to an inner surface of the (tubular) heating element. When the heating element is activated, heat can be transferred radially inward from the inner surface of the heating element to heat the aerosol-forming substrate.

[0063]

[63] The cavity may include a (e.g., circumferential) wall (or walls) and the (tubular) heating element may extend around at least a portion of this wall. In this manner, the wall may be located between an inner surface of the heating element and an outer surface of the aerosol-forming article. The wall (or walls) of the cavity may be formed from a thermally conductive material (e.g., metal) to allow for 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 an aerosol-forming substrate of the aerosol-forming article received in the cavity.

[0064]

[64] In some embodiments, the device can include a cap disposed on an end of the body configured to engage the aerosol-forming article. If the device includes a heater having a heating element, the cap can at least partially surround the heating element. The cap can be movable between an open position, in which access to the heating element is provided, and a closed position, in which the cap at least partially surrounds the heating element. The cap can be slidably engaged to the body of the device and can be slidable between the open and closed positions.

[0065]

[65] The cap can define at least a portion of the cavity of the device. That is, the cavity can be completely defined by the cap, or the cap and the body can each define a portion of the cavity. If the cap completely defines the cavity, the cap can include an opening for receiving the heating element into the cavity (when the cap is in the closed position). The cap can include an opening to the cavity. The opening can be configured to receive at least a portion of the aerosol-forming article. That is, the aerosol-forming article can be inserted into the cavity (engaged to the device) through the opening.

[0066]

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

[0067]

[67] The device may include a power source or may be connectable to a power source (e.g., a power source separate from the device). The power source may be electrically connectable to the heater. In that regard, changing (e.g., toggling) the electrical connection of the power source to the heater may affect the state of the heater. For example, toggling the electrical connection of the power source to the heater may toggle the heater between an on state and an off state. The power source may be a power store. For example, the power source may be a battery or a rechargeable battery (e.g., a lithium ion battery).

[0068]

[68] 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. The input connection may optionally be used as a substitute for an internal power source (e.g., a battery or a rechargeable battery). That is, the input connection may be electrically connectable to a heater (to provide power to the heater). Thus, in some forms, the input connection may form at least a portion of the power source for the device.

[0069]

[69] If the power source includes a rechargeable power source (such as a rechargeable battery), the input connection may be used to charge and recharge the power source.

[0070]

[70] The device may include a user interface (UI). In some embodiments, the UI may include input means for receiving operational commands from a user. The input means of the UI may enable a user to control at least one aspect of the operation of the device. In some embodiments, the input means may include a power button for switching the device between an on state and an off state. In some embodiments, the input means may include a motion sensor for receiving operational commands from a user by detecting movement of the device. In some embodiments, the input means may include a microphone for receiving audible operational commands from a user. In some embodiments, the input means may include a touch screen through which a user provides operational commands by touch. In some embodiments, the operational command may include a mode change that modifies the user experience by changing the operational mode of the device.

[0071]

[71] In some embodiments, the UI may additionally or alternatively include an output means for communicating information to a user. In some embodiments, the output means may include a light for indicating a status of the device (and / or the aerosol-forming article) to the user. In some embodiments, the output means may include haptic feedback for indicating a status of the device. In some embodiments, the output means may include a display screen for displaying a status of the device. The status of the device (and / or the aerosol-forming article) indicated to the user may include a status indicative of 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, and the like. For example, the output means may include one or more (e.g., two, three, four, etc.) light-emitting diodes ("LEDs"), which may be located on the body of the device.

[0072]

[72] The device may further include a puff sensor (e.g., an airflow sensor), which forms part of the input means of the UI. The puff sensor may be configured to detect when a user has inhaled at an end (i.e., the distal (oral) end) of the aerosol-forming article. The puff sensor may be, for example, a pressure sensor or a microphone. The puff sensor may be configured to produce a signal indicative of a puff state. The signal may indicate when a user has inhaled (aerosol from the aerosol-forming article), for example in the form of a binary signal. Alternatively, or in addition, the signal may indicate a characteristic of the inhalation (e.g., flow rate of the inhalation, length of time of the inhalation, etc.). The pressure / airflow sensor may, for example, detect a pressure drop in the consumable. Alternatively, the sensor may detect airflow entering the device.

[0073]

[73] The device may further include a consumable detector sensor (e.g., a nicotine sensor, a tobacco sensor), which may form part of the input means of the UI. The consumable detector sensor may be configured to detect the type of tobacco used in or present in the consumable. The consumable detector sensor may be configured to detect the nicotine content present in the consumable. The consumable detector sensor may detect the type of tobacco or the nicotine content based on detecting an active compound / molecule in the consumable. The consumable detector sensor may be configured to produce a signal indicative of the type of tobacco or the nicotine content. The signal may indicate the type of consumable inserted into the device, for example in the form of a binary signal. For example, the consumable detector sensor may determine a visual characteristic of the consumable. For example, the color of the consumable may indicate the type of consumable. Alternatively, the consumable may include a detectable visual cue (e.g., a barcode) that is detectable by the consumable detector sensor. Additionally or alternatively, the signal may indicate a characteristic / nature of the consumable.

[0074]

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

[0075]

[75] 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 the evaporation of the aerosol-forming portion of the aerosol-forming article engaged with the device. The controller may be configured to control the intensity of the aerosol delivery by controlling the operation of the heater. In some embodiments, the controller is configured to control the duration of the aerosol delivery by controlling the operation of the heater. In some embodiments, the controller may be configured to control the amount of aerosol delivery. The controller may be configured to control the function of the device to control the amount of vapor production according to the user's preference. The controller may be configured to generate low visibility or no visibility vapor in a particular mode. This may be achieved by controlling one or more of the device functions, such as controlling the temperature of the heater, controlling the pressure of the air flow, controlling the relative position of the aerosol-forming substrate and the heater to vary the degree of contact between the heater and the aerosol-forming substrate. In some embodiments, the controller may be configured to control the voltage applied by the power source to the heater. For example, the controller may be configured to toggle between applying the full output voltage (of the power supply) to the heater and applying no voltage to the heater. Alternatively, or in addition, the control unit may implement a more complex heater control protocol.

[0076]

[76] The device may further include a voltage regulator for regulating the output voltage provided by the power supply to form a regulated voltage. The regulated voltage may then be applied to the heater.

[0077]

[77] In some embodiments, where the device includes a UI, the controller may be operatively connected to one or more components of the UI. The controller may be configured to receive command signals from an input means 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 thereto control the heater to a corresponding on or off state. The controller may be configured to receive command signals from a consumable detector sensor and in response thereto control the heater. Additionally, the controller may be configured to receive command signals from a user via the input means to change the mode of the device to control the amount of aerosol delivery.

[0078]

[78] The controller may be configured to send output signals to components of the UI. The UI may be configured to communicate information to a user via the output means in response to such output signals (received from the controller). For example, if the device includes one or more LEDs, the LEDs may be operatively connected to the controller. The controller may thus be configured to control illumination of the LEDs (e.g., in response to the output signals). For example, the controller may be configured to control illumination of the LEDs according to a state of a heater (e.g., on or off).

[0079]

[79] If the device includes a sensor (e.g., a puff / airflow sensor / consumable detector sensor), the controller may be operatively connected to the sensor. The controller may be configured to receive a signal from the sensor (e.g., indicative of a status of the device and / or an engaged aerosol forming article). The controller may be configured to control the heater, or a form of the output means, based on the signal from the sensor.

[0080]

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

[0081]

[81] The external device may be a mobile device. For example, the external device may be a smartphone, a tablet, a smartwatch, or a smart car. The external device (e.g., a mobile device) may have an application (e.g., an app) installed on it. The application may facilitate communication between the device and the external device via a wired or wireless connection.

[0082]

[82] The wireless or wired interface may be configured to communicate signals between the external device and the controller of the device. In this regard, the controller may control the configuration of the device in response to signals received from the external device. Alternatively, or in addition, the external device may respond to signals received from the device (e.g., the controller of the device).

[0083]

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

[0084]

[84] In a fourth aspect, there is provided a non-combustion heated device comprising a heater and a controller, the controller configured to operate the heater to heat an aerosol-forming substrate engaged with the heater to a predetermined operating temperature, the predetermined operating temperature being between 140 and 170°C.

[0085]

[85] Because the typical operating temperature of an HNB device is about 200° C. or higher, this embodiment provides a device capable of operating at a lower temperature and thereby delivering less visible vapor, thereby providing the advantages discussed above.

[0086]

[86] All the options and preferences set out above in relation to the second aspect apply equally to the fourth aspect, mutatis mutandis.

[0087]

[87] In particular, the controller may be further configured to operate the heater to heat the aerosol-forming substrate engaged with the heater to a second predetermined operating temperature, the second predetermined operating temperature being greater than 170°C. In some embodiments, the second predetermined operating temperature is at least 180°C, e.g., at least 185°C, at least 190°C, at least 195°C, or at least 200°C. In some embodiments, the second predetermined operating temperature is greater than 170°C and not greater than about 220°C. In some embodiments, the second predetermined operating temperature is between 175 and 220°C, e.g., between 175 and 215°C, between 175 and 210°C, between 180 and 210°C, between 190 and 210°C, or between 195 and 205°C. In some embodiments, the second predetermined operating temperature is about 200°C.

[0088]

[88] A fifth aspect of the invention is a method of reducing an amount of vapor produced by a non-combustion heated device, the non-combustion heated device comprising a heater and a controller, the controller configured to operate the heater to heat an aerosol-forming substrate engaged with the heater to a predetermined operating temperature, the method comprising reducing the predetermined operating temperature to a temperature of between 140 and 170°C.

[0089]

[89] In a sixth aspect, there is provided a system (e.g., a smoking substitution system) comprising a device according to the second or fourth aspect and an aerosol-forming article. The aerosol-forming article may comprise an aerosol-forming substrate at an upstream end of the aerosol-forming article. The article may be in the form of a smoking substitution article, such as a heated tobacco (HT) consumable (also known as a heat-not-burn (HNB) consumable).

[0090]

[90] A seventh aspect of the invention is a method of using a device according to the second or fourth aspect, or a system according to the sixth aspect.

[0091]

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

[0092]

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

[0093]

[93] To generate an aerosol, the aerosol-forming substrate comprises at least one volatile compound that is intended to be vaporized / aerosolized and that, when inhaled, can provide a recreational and / or medicinal effect to the user. Suitable chemically and / or physiologically active volatile compounds include the group consisting of nicotine, cocaine, caffeine, opiates and opoids, cathine and cathinone, kavalactones, mysticin, beta-carboline alkaloids, salvinorin A, together with any combinations, functional equivalents, and / or synthetic substitutes of the above.

[0094]

[94] The aerosol-forming substrate can include plant material. Plant materials include Amaranthus dubius, Arctostaphylos uva-ursi, 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, Humulus japonica (Japanese) Hops (Kanamugra)), Humulus lupulus(Hops), Lactuca virosa(Lettuce), Laggera alata, Leonotis leonurus, Leonurus cardiaca(Motherwort), Leonurus sibiricus(Honeyweed), Lobelia cardinalis, Lobelia inflata(Indian-tobacco), Lobelia siphilitica, Nepeta cataria(Catnip), Nicotiana species(Tobacco), Nymphaea alba(White Lily), Nymphaea caerulea(Blue Lily), Opium poppy, Passiflora incamata(Passionflower), Pedicularis densiflora(Indian Warrior (Indian Warrior), Pedicularis groenlandica (Elephant'sHead(Elephant Head), Salvia divinorum, Salvia dorrii(Tobacco Sage), Salvia spp.(Sage), Scutellaria galericulata, Scutellaria lateriflora, Scutellaria nana, Scutellaria spp.(Skullcap), Sida acuta(Wireweed), Sida rhombifolia, Silene capensis, Syzygium aromaticum(Clove), Tagetes lucida(Mexican Tarragon(Mint Marigold), Tarchonanthus camphoratus, Tumera diffusa(Damiana), Mullein spp., Zamia latifolia(Maconha The composition may comprise at least one plant material selected from the list including Maconha brava (Maconha brava) together with any combination, functional equivalent, and / or synthetic alternative of the above.

[0095]

[95] The plant material may be tobacco. Any type of tobacco may be used, including, but not limited to, flue-cured, burley, Maryland, dark air-cured, oriental, dark flue-cured, perique, and rustica. This also includes blends of the aforementioned tobaccos.

[0096]

[96] Tobacco can include one or more of leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogenized tobacco, cut tobacco, extruded tobacco, cut rag tobacco, and / or reconstituted tobacco (e.g., slurry recon or paper recon).

[0097]

[97] The aerosol-forming substrate may comprise a collecting sheet of homogeneous (eg, paper / slurry recon) tobacco, or a collecting strip / strip formed from such a sheet.

[0098]

[98] The aerosol-forming substrate may include one or more additives selected from humectants, flavoring agents, bulking agents, aqueous / non-aqueous solvents, and binders.

[0099]

[99] The flavorings may be provided in solid or liquid form. Flavorings may include menthol, licorice, chocolate, fruit flavors (including, for example, citrus, cherry, etc.), vanilla, spices (e.g., ginger, cinnamon), and tobacco flavors. The flavorings may be uniformly dispersed throughout the aerosol-forming substrate or may be provided at discrete locations and / or varying concentrations throughout the aerosol-forming substrate.

[0100]

[0100] The aerosol-forming substrate may be formed in a substantially cylindrical shape such that the article / consumable resembles a conventional cigarette. The aerosol-forming substrate may have a diameter of 5 to 10 mm, such as 6 to 9 mm or 6 to 8 mm, for example about 7 mm. The aerosol-forming substrate may have an axial length of 10 to 15 mm, for example 11 to 14 mm, such as about 12 or 13 mm.

[0101]

[0101] The article / consumable may include at least one filter element. A terminal filter element may be located at the downstream / mouth end of the article / consumable.

[0102]

[0102] The or at least one filter element (e.g., an end filter element) may be constructed from cellulose acetate or polypropylene tow. The at least one filter element (e.g., an end filter element) may be constructed from activated carbon. The at least one filter element (e.g., an end element) may be constructed from paper. The or each filter element may be at least partially (e.g., entirely) circumscribed by a plug wrap, e.g., a paper plug wrap.

[0103]

[0103] A terminal filter element (the downstream end of the article / consumable) can be joined to an upstream element to form the article / consumable by a circumscribing tipping layer, e.g., a tipping paper layer. The tipping paper can have an axial length greater than the axial length of the terminal filter element, such that the tipping paper completely circumscribing the terminal filter element and the wrap layer surrounding any adjacent upstream elements.

[0104]

[0104] In some embodiments, the article / consumable may include an aerosol cooling element adapted to cool the aerosol generated (by heat exchange) from the aerosol-forming substrate before it is inhaled by the user.

[0105]

[0105] The article / consumable may include a spacer element that defines a space or cavity between the aerosol-forming substrate and the downstream end of the consumable. The spacer element may include a paper tube. The spacer element may be circumscribed by a (paper) wrap layer.

[0106]

[0106] The present invention includes combinations of the described embodiments and preferred features except where such combinations are expressly impermissible or expressly avoided.

[0107]

[0107] Those skilled in the art will recognize that, unless mutually exclusive, any feature or parameter described in connection with any one of the above aspects may also be applied to any other aspect. Furthermore, unless mutually exclusive, any feature or parameter described herein may be applied to any aspect and / or may be combined with any other feature or parameter described herein. [Brief description of the drawings]

[0108]

[0108] In order that the present invention may be understood and that further aspects and features thereof may be realized, embodiments illustrating the principles of the present invention will now be described in more detail with reference to the accompanying drawings. [Figure 1A]

[0109] FIG. 1A is a schematic diagram of a smoking substitution system. [Figure 1B]

[0110] FIG. 1B is a schematic diagram of a variation of the smoking substitution system of FIG. 1A. [Figure 2A]

[0111] FIG. 2A is a front view of a first embodiment of a smoking substitution system with a consumable engaged to the device. [Figure 2B]

[0112] FIG. 2B is a front view of the first embodiment of the smoking substitution system with the consumables separated from the device. [Figure 2C]

[0113] FIG. 2C is a cross-sectional view of a consumable of the first embodiment of the smoking substitution system. [Figure 2D]

[0114] FIG. 2D is a detailed view of the end of the device of the first embodiment of the smoking substitution system. [Figure 2E]

[0115] Fig. 2E is a cross-sectional view of a first embodiment of a substitute smoking system. Fig. 3 is a block diagram of an embodiment of a heated tobacco device. [Diagram 3]

[0116] FIG. 3 is a schematic diagram of one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0109]

[0117] Aspects and embodiments of the present invention are discussed below with reference to the accompanying figures. Further aspects and embodiments will be apparent to those skilled in the art. All documents mentioned in this text are incorporated herein by reference.

[0110]

[0118] 1A is a schematic diagram providing a general overview of a smoking substitution system 100. The system 100 includes a substitute smoking device 101 and an aerosol-forming article in the form of a consumable 102, which includes an aerosol former 103. The system is configured to vaporize the aerosol former 103 by heating the aerosol former 103 (forming a vapor / aerosol for inhalation by a user).

[0111]

[0119] In the system shown, the heater 104 forms part of the consumable 102 and is configured to heat the aerosol formation body 103. In this variation, the heater 104 is electrically connectable to a power source 105, for example when the consumable 102 is engaged with the device 101. The heat from the heater 104 causes the aerosol formation body 103 to evaporate, producing a vapor. The vapor then condenses to form an aerosol, which is ultimately inhaled by the user.

[0112]

[0120] The system 100 further includes a power source 105, which forms part of the device 101. In other embodiments, the power source 105 may be located external to the device 101 (but connectable to the device 101). The power source 105 is electrically connectable to the heater 104 such that it can provide power to the heater 104 (i.e., for heating the aerosol formation body 103). Thus, controlling the electrical connection of the power source 105 to the heater 104 provides control of the state of the heater 104. The power source 105 may be a power store, for example a battery or a rechargeable battery (e.g., a lithium ion battery).

[0113]

[0121] 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, e.g., a power outlet. The connector 106 may be used as a substitute for the power source 105; that is, the connector 106 may be electrically connectable to the heater 104 to provide electricity to the heater 104. In such an embodiment, the device may not include a power source, and instead the power source of the system may include the connector 106 and the external power source (with the connector 106 providing the electrical connection).

[0114]

[0122] In some embodiments, the connector 106 may be used to charge and recharge the power source 105 if the power source 105 includes a rechargeable battery.

[0115]

[0123] The system 100 also includes a user interface (UI) 107. Although not shown, the UI 107 may include input means for receiving commands from a user. The input means of the UI 107 allows a user to control at least one aspect of the operation of the system 100. The input means may be in the form of, for example, buttons, a touch screen, a switch, a microphone, a motion sensor, etc.

[0116]

[0124] The UI 107 also includes output means for communicating information to the user, which may include, for example, lights (e.g., LEDs), a display screen, a speaker, a vibration generator, etc.

[0117]

[0125] The system 100 further includes a controller 108 configured to control at least one function of the device 101. In the embodiment shown, the controller 108 is a component of the device 101, but in other embodiments, the controller 108 may be separate from (but connectable to) the device 101. The controller 108 may be configured to control the operation of the heater 104, for example, to control the voltage applied to the heater 104 from the power supply 105. The controller 108 may be configured to toggle the supply of power to the heater 104 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.

[0118]

[0126] Although not shown, the system 100 may also include a voltage regulator for regulating the output voltage from the power supply 105 to form a regulated voltage. The regulated voltage may then be applied to the heater 104.

[0119]

[0127] In addition to being connected to the heater 104, the controller 108 is operatively connected to the UI 107. Thus, the controller 108 can receive input signals from the input means of the UI 107. Similarly, the controller 108 can transmit output signals to the UI 107. In response, the output means of the UI 107 can convey information to a user based on the output signals. The controller also includes a memory 109, which is a non-volatile memory. The memory 109 includes instructions that, when executed, cause the controller to perform certain tasks or steps of a method.

[0120]

[0128] Figure IB is a schematic diagram illustrating a variation of the system 100 of Figure IA. In the system 100' of Figure IB, the heater 104 forms part of the device 101 rather than the consumable 102. In this variation, the heater 104 is electrically connected to a power source 105.

[0121]

[0129] Figures 2A and 2B show a heated tobacco (HT) smoking substitute system 200. The system 200 is an example of the system 100, 100' described in relation to Figures 1A or 1B. The system 200 includes an HT device 201 and an HT consumable 202. The description of Figures 1A and 1B above is also applicable to the system 200 of Figures 2A and 2B and therefore will not be repeated.

[0122]

[0130] The device 201 and the consumable 202 are configured such that the consumable 202 can be engaged with the device 201. Figure 2A shows the device 201 and the consumable 202 in an engaged state, and Figure 2B shows the device 201 and the consumable 202 in a detached state.

[0123]

[0131] The device 201 includes a body 209 and a cap 210. In use, the cap 210 is engaged at an end of the body 209. Although not apparent from these views, 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.

[0124]

[0132] The device 201 includes output means (forming part of the UI of the device 201) in the form of a plurality of light emitting diodes (LEDs) 211 arranged linearly on an outer surface of the body 209 of the device 201 along a longitudinal axis of the device 201. A button 212 is also arranged on the outer surface of the body 209 of the device 201 and is spaced axially (i.e. along the longitudinal axis) from the plurality of LEDs 211.

[0125]

[0133] 2C shows a detailed cross-sectional view of the consumable 202 of the system 200. The consumable 202 generally resembles a cigarette. In that respect, the consumable 202 has a generally cylindrical shape with a diameter of 7 mm and an axial length of 70 mm. The consumable 202 includes an aerosol-forming substrate 213, a terminal filter element 214, an upstream filter element 215, and a spacer element 216. In other embodiments, the consumable can further include a cooling element. The cooling element can exchange heat with the vapor formed by the aerosol-forming substrate 213 to cool the vapor to facilitate condensation of the vapor.

[0126]

[0134] The aerosol-forming substrate 213 is substantially cylindrical, is located at the upstream end 217 of the consumable 202, and comprises the aerosol former of the system 200. At that point, the aerosol-forming substrate 213 is configured to be heated by the device 201 to emit a vapor. The emitted vapor is then entrained in an airflow passing through the aerosol-forming substrate 213. The airflow is created by the action of a user inhaling at the downstream end 218 (i.e., the distal or oral end) of the consumable 202.

[0127]

[0135] In this embodiment, the aerosol-forming substrate 213 includes a tobacco material, which may include, for example, any suitable part of a tobacco plant (e.g., leaves, stems, roots, husks, seeds, and flowers). The tobacco may include one or more of leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogenized tobacco, cut tobacco, extruded tobacco, cut rag tobacco, and / or reconstituted tobacco (e.g., slurry recon or paper recon). For example, the aerosol-forming substrate 213 may include a collecting sheet of homogenous (e.g., paper / slurry recon) tobacco, or collecting strips / strips formed from such a sheet.

[0128]

[0136] To generate an aerosol, the aerosol-forming substrate 213 includes at least one volatile compound that is intended to be evaporated / aerosolized and that, when inhaled, can provide a recreational and / or medicinal effect to the user. The aerosol-forming substrate 213 can further include one or more additives. For example, such additives can be in the form of humectants (e.g., propylene glycol and / or vegetable glycerin), flavorings, fillers, aqueous / non-aqueous solvents, and / or binders.

[0129]

[0137] The terminal filter element 214 is also substantially cylindrical and is located 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 filter element with holes 219 (e.g. for air flow) formed therein. The holes 219 have a diameter of 2 mm. The terminal filter element 214 is formed from a porous (e.g. monoacetate) filter material. As mentioned above, the downstream end 218 of the consumable 202 (i.e. where the terminal filter 214 is located) forms the mouthpiece portion of the consumable 202 into which the user inhales. Airflow is drawn from the upstream end 217, through the components of the consumable 202, and out the downstream end 218. The airflow is driven by the user inhaling at the downstream end 218 (i.e. the mouthpiece portion) of the consumable 202.

[0130]

[0138] The upstream filter element 215 is located axially adjacent to the aerosol-forming substrate 213, between the aerosol-forming substrate 213 and the terminal filter element 214. Like the terminal filter 214, the upstream filter element 215 is in the form of a hollow filter element, with holes 220 extending axially therethrough. In this manner, the upstream filter 215 can act as an airflow restrictor. The upstream filter element 215 is formed from a porous (e.g., monoacetate) filter material. The holes 220 of the upstream filter element 215 have a larger diameter (3 mm) than the terminal filter element 214.

[0131]

[0139] Spacer 216 is in the form of a paper tube and defines a cavity or chamber between upstream filter element 215 and terminal filter element 214. Spacer 216 acts to allow both cooling and mixing of the vapor / aerosol from aerosol-forming substrate 213. The spacer has an outer diameter of 7 mm and an axial length of 14 mm.

[0132]

[0140] Although it is not apparent from these figures, the aerosol-forming substrate 213, the upstream filter 215, and the spacer 216 are circumscribed by a paper wrap layer. The terminal filter 214 is circumscribed by a tip layer, which also circumscribes a portion of the paper wrap layer (to connect the terminal filter 214 to the remaining components of the consumable 202). The upstream filter 215 and the terminal filter 214 are circumscribed by a further wrap layer in the form of a plug wrap.

[0133]

[0141] Referring again now to the device 201, FIG. 2D shows a detailed view of an end of the device 201 configured to engage the consumable 202. The cap 210 of the device 201 includes an opening 221 to an internal cavity 222 defined by the cap 210 (as is more evident from FIG. 2D). The opening 221 and the cavity 222 are formed to receive at least a portion of the consumable 202. When the consumable 202 is engaged with the device 201, a portion of the consumable 202 is received through the opening 221 and into the cavity 222. After engagement (see FIG. 2B), the downstream end 218 of the consumable 202 protrudes from the opening 221 and thus from the device 201. The opening 221 includes laterally disposed notches 226. When the consumable 202 is received in the opening 221, these notches 226 remain open and can be used, for example, to hold a cover to cover the end of the device 201.

[0134]

[0142] 2E shows a cross-sectional view of a central longitudinal plane through the device 201. The device 201 is shown with a consumable 202 engaged.

[0135]

[0143] The device 201 includes a heater 204, which includes a heating element 223. The heater 204 forms part of the body 209 of the device 201 and is rigidly attached to the body 209. In the embodiment shown, the heater 204 is a rod heater and the heating element 223 has a circular transverse profile. In other embodiments, the heater may be in the form of a blade heater (e.g., a heating element having a rectangular transverse profile) or a tubular heater (e.g., a heating element having a tubular shape).

[0136]

[0144] The heating element 223 of the heater 204 protrudes from the interior base of the cavity 222 along the longitudinal axis towards the opening 221. As is evident from this view, the length of the heating element (i.e., the length along the longitudinal axis) is less than the depth of the cavity 222. In this manner, the heating element 223 does not protrude from or extend beyond the opening 221.

[0137]

[0145] When the consumable 202 is received in the cavity 222 (as shown in FIG. 2E ), the heating element 223 penetrates the aerosol-forming substrate 213 of the consumable 202. In particular, when inserted, the heating element 223 extends across substantially the entire axial length of the aerosol-forming substrate 213. Thus, when the heater 204 is activated, heat is transferred radially from the outer circumferential surface of the heating element 223 to the aerosol-forming substrate 213.

[0138]

[0146] Alternatively, the heater 204 is movably mounted to the body 209. The heater is longitudinally movable such that the longitudinal position of the heating element 223 can be varied, thereby controlling the exposure of the consumable portion to the heating element.

[0139]

[0147] The device 201 further includes an electronics cavity 224. Located in the electronics cavity 224 is a power source in the form of a rechargeable battery 205 (a lithium ion battery).

[0140]

[0148] The device 201 includes a connector (i.e., forming part of the IO module of the device 201) in the form of a USB port 206. For example, the connector may alternatively be, for example, a micro USB port or a USB-C port. The USB port 206 may be used to recharge the rechargeable battery 205.

[0141]

[0149] The device 201 includes a controller (not shown) located in the electronics cavity 224. The controller includes a microcontroller mounted on a printed circuit board (PCB). The USB port 206 is also connected to the controller 208 (i.e., connected to the PCB and to the microcontroller).

[0142]

[0150] 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 may be achieved by the controller toggling an electrical connection of the rechargeable battery 205 to the heater 204. For example, the controller 208 is configured to control the heater 204 in response to a user pressing a button 212. Pressing the button 212 may cause the controller to enable a voltage (from the rechargeable battery 205) to be applied to the heater 204 (heating the heating element 223).

[0143]

[0151] The controller is also configured to control the LEDs 211 in response to a (e.g., detected) state of the device 201 or the consumable 202. For example, the controller may control the LEDs to indicate whether the device 201 is in an on or off state (e.g., one or more of the LEDs may be illuminated by the controller when the device is in an on state).

[0144]

[0152] The device 201 includes a further input means (i.e., in addition to the button 212) in the form of a puff sensor 225. The puff sensor 225 is configured to detect when a user draws (i.e., inhales) on the downstream end 218 of the consumable 202. The puff sensor 225 may be in the form of a pressure sensor, a flow meter, or a microphone, for example. The puff sensor 225 is operatively connected to the controller 208 within the electronics cavity 224 such that a signal from the puff sensor 225 indicative of a puff state (i.e., inhalation or not inhalation) forms an input to (and may therefore be responded to by) the controller 208.

[0145]

[0153] FIG. 3 shows a block diagram of a heated tobacco device 301.

[0146]

[0154] The device 301 includes a heater 304 that includes a heating element.

[0147]

[0155] The device 301 includes a consumable detector sensor 328 and a puff sensor 325. A signal from the puff sensor may be used to actuate a mode change from the first mode to the second mode or from the second mode to the first mode after detecting a predefined puff signal from the user. In some embodiments, the predefined puff signal may be, for example, a puff by the user exceeding a puff duration threshold. In some embodiments, the puff sensor 325 may provide a signal to the controller 308 to change modes from the first mode to the second mode or from the second mode to the first mode after detecting a predefined puff duration.

[0148]

[0156] The consumable detector sensor 328 is configured to detect various types of consumables or tobacco. The consumable detector sensor 328 can detect the level of nicotine content present in the tobacco. The consumable detector sensor 328 can detect chemicals or molecules, for example, to identify the level of tobacco and / or nicotine content. The consumable detector sensor 328 can be a biosensor that, in use, contacts the consumable and identifies the type of tobacco or the nicotine level. The consumable detector sensor 328 can be an aerosol sensor that detects chemicals present in the aerosol from the consumable to detect the type of tobacco and / or the nicotine level. The consumable detector sensor 328 is operably coupled to the controller 308. The consumable detector sensor 328 can send a signal to the controller 308 to indicate the type of tobacco present in the consumable 202. The signal from the consumable detector sensor 328 forms an input to the controller 308, which selects an operating mode based on the input.

[0149]

[0157] The controller 308 is configured to operate the heater of the device 202 according to at least two user-selectable operating modes. The two user-selectable operating modes are a first and a second mode. The first mode may be considered a normal or standard mode. In the first mode, a first amount of nicotine is delivered to the user. The second mode may be considered a "boost" or "strong" mode. In the second mode, a second amount of nicotine is delivered to the user. The second amount is greater than the first amount. In other words, when the device operates in the second mode, it delivers more nicotine to the user than in the first mode.

[0150]

[0158] There are multiple operational mode mechanisms for achieving differential nicotine delivery between operational modes, some of which are illustrated herein, although one of ordinary skill in the art will appreciate that other mechanisms are possible.

[0151]

[0159] In some embodiments, the duration of the consumable cycle is longer in the second mode than in the first mode. In other words, the heater is maintained at the operating temperature for a longer period of time in the second mode than in the first mode. Thus, the device is able to deliver a larger amount of nicotine in the second mode than in the first mode. For example, the heater operates for 5 minutes in the second mode instead of 4 minutes in the first mode. This allows the user to obtain a "stronger" consumable cycle in which more nicotine is delivered. A consumable cycle is the period during which a single consumable is heated for use by the user.

[0152]

[0160] In some embodiments, in the second mode, the controller 308 is configured to operate the heater at a higher temperature than in the first mode. At a higher temperature, more nicotine can be delivered for each puff made by the user. Thus, nicotine is delivered at a faster rate in the second mode than in the first mode. The controller 308 may be configured to increase the temperature of the heater 304 by controlling the power supply to the heater.

[0153]

[0161] The second mode may be selected by a user by using a user interface of the device. The user interface may include at least one of a button, a touch screen, a motion sensor, or a voice recognition means. Any of these components may be used to select or change the operating mode of the device. In an embodiment including a motion sensor, the device may be configured to change the operating mode in response to detecting that a predetermined motion of the device has been performed by the user.

[0154]

[0162] In some embodiments, the device has a default mode, the default mode being one of the first or second operating modes. The device operates according to the default mode until a user changes the mode (e.g., using a user interface of the device). In some embodiments, the device is configured to allow a user to change the default mode. In some embodiments, the device is configured to select the default mode based on a usage history of the device.

[0155]

[0163] In an alternative proposal configured to adjust the visibility of the vapor formed from the aerosol-forming substrate, the controller 208 is configured to operate the heater of the device 201 according to at least two alternative modes. These modes may be user-selectable modes. The two user operation modes are a first and a second mode. In the first mode, the controller 208 is configured to control the heating of the heater 204 within a predetermined range. In one embodiment, the predetermined range is 140-170°C. In this mode, the visibility of the vapor generated is lower. In addition, the controller 208 is configured in the first mode to deliver mainly nicotine and flavor in the aerosol / vapor generated from the aerosol-forming substrate 202 with minimal or zero aerosol visibility. The second mode is a normal / standard mode, in which the visibility of the vapor generated from the aerosol-forming substrate 202 is greater compared to the first mode. In the second mode, the controller is configured to maintain the temperature of the heater above 170°C (e.g., about 200°C). The controller 208 is configured to operate the device in either the first mode or the second mode throughout the consumable cycle. The operating temperature for the first mode can vary depending on the type of aerosol-forming substrate 202 selected.

[0156]

[0164] The controller 208 is configured to modify the airflow through the device to change the pressure drop in the consumable and ultimately the amount of vapor produced. Modifying the airflow creates a pressure drop in the device. The pressure drop has a correlation with the visibility of the vapor formed. Thus, a low pressure drop gives visible vapor and as the pressure drop increases, the visibility of the vapor decreases. Thus, to operate the device in the first mode, the controller 208 adjusts the airflow to create a higher pressure drop. In addition, the device includes a mechanism for controlling the airflow rate entering the device. Alternatively, the device can control the opening of the inlet port (not shown) of the device to change the pressure drop of the airflow entering the device. Similarly, the opening of the airflow passage formed in the device can be modified to change the pressure drop in the device.

[0157]

[0165] The controller 208 may also be configured to move the heater 204 relative to the aerosol-forming substrate 202 to vary the amount of contact between the heater and the substrate according to the selected mode. The amount of contact of the heater in the first mode is less than in the second mode. That is, in the first mode, the amount of exposure of the aerosol-forming substrate to the heater is less than the exposure of the aerosol-forming substrate to the heater in the second mode. The exposure of the aerosol-forming substrate 202 to the heater may modify the visibility of the vapor. As a result of the reduced exposure of the aerosol-forming substrate 202 in the first mode, the amount of heat transferred to the aerosol-forming substrate 202 is also reduced. Thus, the controller 202 may move the heater 204 relative to the aerosol-forming substrate 202 to vary the amount of contact between the heater 204 and the aerosol-forming substrate 202. Alternatively, the controller can vary the length of the cavity 222 for insertion / holding of the aerosol-forming substrate / consumable 202 and can keep the heater fixed to vary the amount of contact between the heater and the aerosol-forming substrate 202.

[0158]

[0166] The features disclosed in the above description, or the following claims, or the accompanying drawings, are appropriately expressed in their specific form or in terms of means for performing a disclosed function, or a method or process for obtaining a disclosed result, and may be utilized separately or in any combination of such features to realize the invention in its many and varied forms.

[0159]

[0167] While the present invention has been described in conjunction with the exemplary embodiments set forth above, many equivalent modifications and variations will be apparent to those skilled in the art given this disclosure. Accordingly, the exemplary embodiments of the invention set forth above are considered to be illustrative rather than limiting. Various changes may be made to the described embodiments without departing from the spirit and scope of the invention.

[0160]

[0168] For the avoidance of any doubt, any theoretical explanations provided herein are provided for the purpose of improving the understanding of the reader, and the inventors do not wish to be bound by any of these theoretical explanations.

[0161]

[0169] All headings used herein are for organizational purposes only and are not to be construed as limiting the subject matter described.

[0162]

[0170] Throughout this specification, including the claims which follow, unless the context requires otherwise, the words "have," "comprise," and "include," as well as variations such as "having," "comprises," "comprising," and "including," will be understood to imply the inclusion of a stated integer or step or group of integers or steps, but not to exclude any other integers or steps or group of integers or steps.

[0163]

[0171] It should be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. As used herein, ranges may be expressed as "about" one particular value and / or to "about" another particular value. When such a range is expressed, another embodiment includes from the one particular value and / or to the other particular value. Similarly, by use of the prefix "about," when values ​​are expressed as approximations, it will be understood that the particular value forms another embodiment. The term "about" in connection with numerical values ​​is optional and means, for example, ±10%.

[0164]

[0172] The words "preferred" and "preferably" are used herein to refer to embodiments of the invention that may provide certain benefits, under some circumstances. It is to be understood, however, that other embodiments may also be preferred, under the same or different circumstances. Thus, reference to one or more preferred embodiments does not mean or imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the disclosure or the claims.

Claims

1. A heated tobacco device comprising: a heater electrically connectable to a power source; a controller configured to operate the heater according to at least two user-selectable operating modes; Including, It has a default mode, the operational mode is selectable by a user via a user input means; the heater is adapted to engage an aerosol-forming substrate provided in a heated tobacco consumable product, the aerosol-forming substrate including an active ingredient for delivery to the user; The at least two user selectable operating modes include: a first mode in which the heater operates to deliver a first amount of an active ingredient to the user; a second mode in which the heater is operative to deliver a second amount of an active ingredient to the user; the second amount of active ingredient is greater than the first amount of active ingredient; the default mode being one of the first mode or the second mode; the controller is configured to allow the user to selectively set the first mode and the second mode as the default mode. Heated tobacco device.

2. 10. The device of claim 1, wherein in the second mode, the controller operates the heater to deliver the active ingredient at a faster rate than in the first mode.

3. 3. The device of claim 1 or 2, wherein the controller is configured to operate the heater at a first operating temperature in the first mode and at a second operating temperature in the second mode, the second operating temperature being higher than the first operating temperature.

4. 4. The device of claim 1, wherein the controller is configured to operate the heater for a first consumable cycle duration in the first mode and for a second consumable cycle duration in the second mode, the second consumable cycle duration being longer than the first consumable cycle duration.

5. The device of claim 1 , wherein the controller is configured to set the default mode based on historical usage of the device.

6. 6. The device of claim 1, wherein the active ingredient is nicotine.

7. 7. The device of claim 1, further comprising a consumable detector sensor for detecting a type of consumable engaged with the heater or the active ingredient content of the consumable.

8. The device of claim 7 , wherein the controller is configured to select from the at least two operational modes based on the type of consumable detected or the active ingredient content of the detected type of consumable.

9. A device according to claim 1 , wherein the user input means comprises a button.

10. A device according to claim 1 , wherein the user input means comprises a touch screen.

11. A device according to claim 1 , wherein the user input means comprises a motion sensor for detecting predetermined movements of the device.

12. A device according to any preceding claim, wherein the user input means comprises voice recognition means.

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