Smoking substitute system

Abstract

To describe a heated tobacco device.SOLUTION: A 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 user input means. The heater is adapted to engage a heated tobacco consumable, the heated tobacco consumable 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 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 active ingredient is greater than the first amount of active ingredient.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] [1] The present invention relates to a smoking substitute system, and more particularly to a smoking substitute system including a heated tobacco device, but not limited thereto.

Background Art

[0002] [2] Smoking tobacco is generally regarded as exposing smokers to potentially harmful substances. It is generally believed that significant amounts of potentially harmful substances are generated through the burning of tobacco, and / or the heat caused by the combustion of tobacco, and the components of the burned tobacco in the tobacco smoke itself.

[0003] [3] Conventional combustible smoking articles such as cigarettes typically include a cylindrical tobacco rod containing shreds of tobacco surrounded by a wrapper, and usually also include a cylindrical filter axially aligned in abutting relation to the rolled tobacco rod. The filter typically includes a filtering material circumscribed by a plug wrap. The rolled tobacco rod and the filter are joined together by a rolled strip of tipping paper that circumscribes the entire length of the filter and an adjacent portion of the rolled tobacco rod. This type of conventional cigarette is used by lighting the end opposite the filter and burning the tobacco rod. The smoker inhales the mainstream smoke into his or her mouth by sucking at the mouth end 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 substitute systems (or "alternative smoking systems") have been proposed.

[0005] [5] Such smoking substitute systems can form part of a nicotine replacement therapy for people who wish to quit smoking and overcome their nicotine dependence.

[0006] [6]The smoking substitute system includes an electronic system that enables a user to simulate the act of smoking by generating an aerosol (also referred to as "vapor"), which is inhaled (drawn into) the lungs through the mouth and then exhaled. The inhaled aerosol typically has nicotine and / or flavoring that is not associated with, or has fewer, odors and health risks associated with conventional smoking.

[0007] [7]Generally, the smoking substitute system is intended to provide a substitute for the habitual act of smoking while providing the user with an experience and satisfaction similar to that experienced with conventional smoking and combustible tobacco products. Some smoking substitute systems use smoking substitute articles (also referred to as "consumables"), which are designed to resemble conventional cigarettes and are in a cylindrical shape with a mouthpiece at one end.

[0008] [8]The popularity and use of smoking substitute systems have grown rapidly in the past few years. Although originally marketed as an aid to help regular smokers who wish to quit tobacco smoking, consumers are increasingly viewing smoking substitute systems as desirable lifestyle accessories.

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

[0010]

[10] One approach for smoking substitute 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 can be either leaf tobacco or reconstituted tobacco. The vapor can contain nicotine and / or flavoring. In the HT approach, the intention is for the tobacco to be heated without being burned, i.e., the tobacco does not undergo combustion.

[0011]

[11] Typical heat-not-burn (HT) smoking substitute systems can include a device and a consumable. The consumable can include tobacco material. The device and the 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 an air flow 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 can include, for example, propylene glycol and / or vegetable glycerin), in addition to volatile compounds released from tobacco. The released vapor may be entrained in the air flow inhaled through the tobacco.

[0012]

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

[0013]

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

[0014]

[14] There is a need for an improved design of a smoking substitute system, particularly an HT smoking substitute system, to enhance the user experience and improve the functionality of the HT smoking substitute system.

[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 present invention relates to a heated tobacco device operable in different modes, and another aspect of the present invention relates to a non-combustion heated device for controlling vapor generation.

[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 user input means, the heater being adapted to engage a heated tobacco consumable, the heated tobacco consumable containing an active ingredient for delivery to the user, and the at least two user-selectable operating modes including 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 being greater than the first amount of the active ingredient.

[0018]

[18] By providing a heated tobacco device including a controller for operating the device in at least two user-selectable modes, the device can operate in a powerful mode that provides a greater delivery of the active ingredient of the consumable.

[0019]

[19] Optional features are described next. These are applicable either 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 a first mode and for a second consumable cycle duration in a second mode, the second consumable cycle duration being longer than the first consumable cycle duration.

[0023]

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

[0024]

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

[0025]

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

[0026]

[26] Optionally, the active ingredient is nicotine.

[0027]

[27] Optionally, the device further includes 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 from 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 a predetermined movement of the device.

[0032]

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

[0033]

[33] It is advantageous for the controller to be 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, a non-combustion heating device including a heater and a controller is provided, the controller being configured to operate the heater to heat an aerosol-forming substrate engaged with the heater to a predetermined operating temperature, the controller being configured to operate the heater in at least two modes, the at least two modes including a first mode in which vapor is formed from the aerosol-forming substrate with a first visibility and a second mode in which vapor is formed from the aerosol-forming substrate with a second visibility, the first visibility being lower than the second visibility.

[0035]

[35] By providing a non-combustion heating device including a controller for controlling vapor generation, it becomes possible to operate the device in two different modes of vapor generation. In the first mode, the visibility of the generated vapor is lower. This mode may be called the "stealth mode" because the use of the device is less obvious to external observers due to the low visibility of the vapor. In the second mode, the visibility of the generated vapor is higher than in the first mode.

[0036]

[36] The benefit of the operation of the device in the first mode is that the intensity of the flavor and the intensity of nicotine are increased. Without wishing to be bound by theory, it is considered that when the device operates in a mode that produces vapor with a lower visibility, the relative concentrations of nicotine and flavoring agents in the aerosol can be higher. Vapor with a low visibility may also be desirable for aesthetic purposes, for example, for users who wish to reduce the amount of visible vapor generated when in a public place.

[0037]

[37] The terms "first visibility" and "second visibility" refer to the visibility of the vapor generated by the aerosol-forming substrate (e.g., HNB consumable) during a smoking session, such as the visibility of the vapor exhaled by the user after inhalation from the aerosol-forming substrate. Such visibility may generally be evaluated visually, but may also be evaluated by determining the amount by which the vapor scatters incident light, using a more accurate method known to those skilled in the art. Vapor with a higher "visibility" as defined herein scatters or attenuates incident light to a greater extent, thereby appearing to the observer with a greater visibility (i.e., "more cloudy" or "more hazy").

[0038]

[38] Optionally, the controller is configured to operate the heater at a first predetermined operating temperature in a first mode and at a second predetermined operating temperature in a 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 visibilities. Without wishing to be bound by theory, it is thought that the different evaporation temperatures of nicotine on the one hand and aerosol-forming substances on the other can be utilized to adjust the visibility of the vapor. By selecting the temperature at which a smaller amount of aerosol-forming substance evaporates from the aerosol-forming substrate, it is possible to reduce the amount of vapor produced and thereby reduce the visibility of the vapor.

[0040]

[40] In some embodiments, the first predetermined operating temperature is at least 25 °C lower than the second predetermined operating temperature, such as 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.

[0041]

[41] In some embodiments, the first predetermined operating temperature is 140 to 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 higher than 170 °C. In some embodiments, the second predetermined operating temperature is at least 180 °C, such as 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 higher than 170 °C and about 220 °C or lower. In some embodiments, the second predetermined operating temperature is 175 to 220 °C, such as 175 to 215 °C, 175 to 210 °C, 180 to 210 °C, 190 to 210 °C, or 195 to 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 140 to 170 °C, and the second predetermined operating temperature is higher than 170 °C and about 220 °C or lower. In some embodiments, the first predetermined operating temperature is 140 to 170 °C, and the second predetermined operating temperature is at least 200 °C.

[0044]

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

[0045]

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

[0046]

[46] In some embodiments, the controller is configured to change the air flow such that the pressure drop in the first mode is greater than the pressure drop in the second mode.

[0047]

[47] In some embodiments, when switching between the first mode and the second mode, the controller is configured to detect the type of consumable present in the device and incorporate this into the parameters of one or more device functions. In other words, the actions 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 greater temperature decrease between the second mode and the first mode to achieve a given reduction in vapor visibility. Similarly, a particular consumable may require a greater increase in pressure drop between the second mode and the first mode 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 a selected mode. By changing the degree of contact between the heater and the aerosol-forming substrate, the amount of visible vapor produced by the device is changed. The greater the amount of contact between the heater and the substrate, the greater the amount of vapor produced for a given heater temperature. The 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, and thus the extent to which the heater is inserted into the aerosol-forming substrate can be changed. 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, the amount of contact between the heater and the aerosol-forming substrate in the first mode is less than the 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 each other 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 each other in response to the selection of a second mode, thereby increasing the visibility of the vapor produced. The device may be adapted to move the heater and the consumable away from each other in response to the selection of a first mode, thereby reducing the visibility of the vapor produced. In some embodiments, in the second mode, a portion of the heater having a length of about 10 mm is inserted into the consumable. In some embodiments, in the first mode, a portion of the heater having a length of about 5 mm is inserted into the consumable.

[0051]

[51] In some embodiments, the device includes user input means for the user to select a mode. In some embodiments, the user input means includes a user interface through which the user can select a mode, such as 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 output means configured to indicate to the user the currently selected operating mode (e.g., the first or second mode). The device can include a display that indicates to the user the currently selected mode. For example, the device can include one or more lights (e.g., LEDs) that light up 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 over at least one full smoking cycle, i.e., over the time the heater is activated for the smoking of a single HNB consumable. This ensures that the user obtains the desired smoking experience over the entire cycle and is not disrupted by any unwanted mode switches.

[0054]

[54] The device can include an elongated body. The end of the elongated body can be configured to engage an aerosol-forming article. For example, the body can be configured to engage a heated tobacco (HT) consumable (or a heat-not-burn (HNB) consumable). The terms “heated tobacco” and “heat-not-burn” are used interchangeably herein (or interchangeably to describe a device for use with such a consumable) to describe a type of consumable that is heated rather than burned. The device can include a cavity configured to receive at least a portion of the consumable (i.e., to engage the consumable). The aerosol-forming article can 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 the body of the device. The heating element can extend from an end of the body configured to engage the aerosol-forming article.

[0056]

[56] The heater (and thus the heating element) may be firmly attached to the body. The heating element can be elongated so as to define a longitudinal axis, for example, it can have a substantially circular cross-sectional profile (i.e., in a direction transverse to the longitudinal axis of the heating element), that is, the heating element may be substantially cylindrical. Alternatively, the heating element can have a square cross-sectional 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 (for example, the heating element may have an oval cross-sectional profile). The shape and / or size (e.g., diameter) of the cross-sectional profile of the heating element may generally be consistent throughout the length (or substantially throughout the length) of the heating element.

[0057]

[57] The heating element may have a length of 15 mm to 25 mm, for example, a length of 18 mm to 20 mm, for example, a length of about 19 mm. The heating element can have a diameter of 1.5 mm to 2.5 mm, for example, a diameter of 2 mm to 2.3 mm, for example, a diameter of about 2.15 mm.

[0058]

[58] The heating element may be formed from ceramic. The heating element can include a core containing Al2O3 (for example, a ceramic core). The core of the heating element can have a diameter of 1.8 mm to 2.1 mm, for example, 1.9 mm to 2 mm. The heating element can include an outer layer containing Al2O3 (for example, an outer ceramic layer). 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 can include a heating track, and the heating track can 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 can include tungsten and / or rhenium. The heating track can have a thickness of about 20 μm.

[0059]

[59] The heating element may be located in the cavity (of the device) and may extend from the inner base of the cavity towards the opening of the cavity (e.g., along the longitudinal axis). The length of the heating element (i.e., the length along the longitudinal axis of the heater) can be made smaller than the depth of the cavity. Thus, the heating element can extend over only a portion of the length of the cavity. That is, the heating element need 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., the HT consumable) when the aerosol-forming article is received in the cavity. In that regard, the distal end of the heating element (i.e., distal from the base of the heating element attached to the device) can include a tapered portion, thereby facilitating insertion of the heating element into the aerosol-forming article. When the aerosol-forming article is received in the cavity, the heating element can penetrate completely into 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 can have a length that is smaller than or substantially the same as the axial length of the aerosol-forming substrate that forms part of the aerosol-forming article (e.g., the HT consumable). Thus, when such an aerosol-forming article is engaged with the device, the heating element can penetrate only into the aerosol-forming substrate and need not penetrate other components of the aerosol-forming article. The heating element can penetrate into 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 can be transferred from the heating element (e.g., its outer peripheral surface) to the surrounding aerosol-forming substrate. That is, the heat can be transferred radially outwards (in the case of a cylindrical heating element) or, for example, radially inwards (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 that portion of the aerosol-forming article). In particular, the heating element can surround the 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 may be positioned adjacent to the inner surface of the (tubular) heating element. When the heating element is activated, heat can be transferred radially inwards from the inner surface of the heating element to heat the aerosol-forming substrate.

[0063]

[63] The cavity can include a (e.g., circumferential) wall (or walls), and the (tubular) heating element can extend around at least a portion of this wall. In this way, the wall may be positioned 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 from a thermally conductive material (e.g., metal) to enable heat conduction from the heating element to the aerosol-forming article. Thus, heat can be conducted from the heating element, through the cavity wall (or walls), to the aerosol-forming substrate of the aerosol-forming article received in the cavity.

[0064]

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

[0065]

[65] The cap can define at least a portion of the cavity of the device. That is, the cavity may be completely defined by the cap, or each of the cap and the body may define a portion of the cavity. When 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 may be configured to receive at least a portion of the aerosol-forming article. That is, the aerosol-forming article may be inserted into the cavity through the opening (engaged with the device).

[0066]

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

[0067]

[67] The device can 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 can affect the state of the heater. For example, by toggling the electrical connection of the power source to the heater, the heater can be toggled 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 can 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 supply port. 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 the heater (to provide power to the heater). Thus, in some forms, the input connection may form at least part of the power supply of the device.

[0069]

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

[0070]

[70] The device can include a user interface (UI). In some embodiments, the UI can include input means for receiving operation commands from the user. By the input means of the UI, it can be made possible for the user to control at least one form of the operation of the device. In some embodiments, the input means can include a power button for switching the device between an on state and an off state. In some embodiments, the input means can include a motion sensor for receiving operation commands from the user by detecting the movement of the device. In some embodiments, the input means can include a microphone for receiving operation commands by the user's voice. In some embodiments, the input means can include a touch screen for the user to provide operation commands by touch. In some embodiments, the operation commands can include mode changes that modify the user experience by changing the operation mode of the device.

[0071]

[71] In some embodiments, the UI can additionally or alternatively include output means for communicating information to the user. In some embodiments, the output means can include a light for indicating to the user the state of the device (and / or the aerosol-forming article). In some embodiments, the output means can include a tactile feedback for indicating the state of the device. In some embodiments, the output means can include a display screen for displaying the state of the device. The state of the device (and / or the aerosol-forming article) shown to the user can include a state indicating the operation of the heater. For example, the state can include whether the heater is in an off state or an on state. In some embodiments, the UI unit can include at least one of buttons, displays, touchscreens, switches, lights, etc. For example, the output means can 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 can further include a puff sensor (e.g., an air flow sensor), which forms part of the input means of the UI. The puff sensor can be configured to detect that the user has inhaled at the end (i.e., the distal (mouth-side end)) of the aerosol-forming article. The puff sensor can be, for example, a pressure sensor or a microphone. The puff sensor can be configured to generate a signal indicating the state of the puff. The signal can indicate that the user has inhaled (aerosol from the aerosol-forming article), for example, in the form of a binary signal. Alternatively or additionally, the signal can indicate characteristics of the inhalation (e.g., the flow rate of the inhalation, the length of the inhalation time, etc.). The pressure sensor / air flow sensor can, for example, detect the pressure drop in the consumable. Alternatively, the sensor can detect the air flow entering the device.

[0073]

[73] The device can further include a consumable detector sensor (e.g., nicotine sensor, tobacco sensor), and the consumable detector sensor can 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 can detect the type of tobacco or nicotine content based on detecting an active compound / molecule in the consumable. The consumable detector sensor may be configured to generate a signal indicating the type of tobacco or nicotine content. The signal can 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 be able to determine the visual characteristics of the consumable. For example, the color of the consumable can indicate the type of consumable. Alternatively, the consumable can include a detectable visual cue (e.g., barcode) that can be detected by the consumable detector sensor. Additionally, or alternatively, the signal can indicate the characteristics / properties of the consumable.

[0074]

[74] The device can include a controller or can be connectable to a controller, and the controller may be configured to control at least one function of the device. The controller can include a microcontroller, and the microcontroller may be attached, for example, to a printed circuit board (PCB). The controller can also include a memory, for example, a non-volatile memory. The memory can include instructions, and the instructions, when executed, can cause the controller to perform a specific task or step 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 aerosol delivery by controlling the operation of the heater. In some embodiments, the controller is configured to control the duration of aerosol delivery by controlling the operation of the heater. In some embodiments, the controller may be configured to control the amount of aerosol delivered. The controller may be configured to control the function of the device so as to control the amount of vapor generated according to the user's preference. The controller may be configured to generate low-visibility or invisible 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, and 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 to the heater by the power source. For example, the controller may be configured to toggle between applying the full output voltage (of the power source) to the heater and not applying a 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 adjusting the output voltage supplied by the power source to form a regulated voltage. The regulated voltage may then be applied to the heater.

[0077]

[77] In some embodiments, when 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 a command signal from an input means of the UI. The controller may be configured to control the heater in response to the command signal. For example, the controller may be configured to receive "on" and "off" command signals from the UI and, in response, be able to control the heater to be in the corresponding on or off state. The controller may be configured to receive a command signal from a consumable detector sensor and, in response, be able to control the heater. Additionally, the controller may be configured to receive from the user, via the input means, a command signal for changing the mode of the device to control the amount of aerosol delivery.

[0078]

[78] 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 the user via an output means in response to such an output signal (received from the controller). For example, when 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 lighting of the LEDs (e.g., in response to an output signal). For example, the controller may be configured to control the lighting of the LEDs according to the state of the heater (e.g., on or off).

[0079]

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

[0080]

[80] The device can include a wireless interface configured to communicate wirelessly (e.g., via Bluetooth® (e.g., Bluetooth low energy connection) or Wi-Fi®) with an external device. Similarly, the input connection may be configured to make 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. An application (e.g., an app) may be installed on the external device (e.g., the mobile device). The application can 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 transmit signals between the external device and the controller of the device. In this regard, the controller can control the form of the device in response to signals received from the external device. Alternatively, or in addition, the external device can respond to signals received from the device (e.g., the controller of the device).

[0083]

[83] In a third aspect, a system (e.g., a smoking substitute system) is provided that includes a device according to the first aspect and an aerosol forming article. The aerosol forming article can include an aerosol forming substrate at an upstream end of the aerosol forming article. The article may be in the form of a smoking substitute article, such as a heated tobacco (HT) consumable (also known as a non-combustible heated (HNB) consumable).

[0084]

[84] In a fourth aspect, a non-combustible heating device is provided that includes a heater and a controller, the controller being 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 °C and 170 °C.

[0085]

[85] Since the normal operating temperature of the HNB device is about 200 °C or higher, this aspect provides a device that can operate at a lower temperature and thereby deliver a vapor with lower visibility, thereby providing the advantages described above.

[0086]

[86] All of the options and preferences described in connection with the second aspect, with the necessary modifications, are equally applicable to the fourth aspect.

[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, which is higher than 170 °C. In some embodiments, the second predetermined operating temperature is at least 180 °C, such as 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 higher than 170 °C and about 220 °C or lower. In some embodiments, the second predetermined operating temperature is 175 - 220 °C, such as 175 - 215 °C, 175 - 210 °C, 180 - 210 °C, 190 - 210 °C, or 195 - 205 °C. In some embodiments, the second predetermined operating temperature is about 200 °C.

[0088]

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

[0089]

[89] In a sixth aspect, a system (e.g., a smoking substitute system) is provided that includes a device according to the second or fourth aspect and an aerosol-forming article. The aerosol-forming article can include an aerosol-forming substrate at an upstream end of the aerosol-forming article. The article may be in the form of a smoking substitute article, such as a heated tobacco (HT) consumable (also known as a non-combustible heated (HNB) consumable).

[0090]

[90] A seventh aspect of the present 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 end or outlet side from which the aerosol exits the consumable for inhalation by the user. The upstream end of the article / consumable is the end located at a position opposite to 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, such volatile compounds being intended to be evaporated / aerosolized and capable of providing a mood-enhancing effect and / or a medicinal effect to the user when inhaled. Suitable chemically and / or physiologically active volatile compounds include nicotine, cocaine, caffeine, opiates and opoids, cathine and cathinone, kavalactones, mysticin, beta-carboline alkaloids, salvinorin A, in any combination, functional equivalents, and / or synthetic alternatives thereof, as described above.

[0094]

[94] The aerosol-forming substrate can include plant material. The plant material includes 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, Humulus japonica (Japanese Hops), Humulus lupulus (Hops), Lactuca virosa (Lettuce Opium), 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 incarnata (Passionflower), Pedicularis densiflora (Indian Warrior), Pedicularis groenlandica (Elephant’sAt least one plant material selected from the list including Head (Elephant Head), Salvia divinorum, Salvia dorrii (Tobacco Sage), Salvia species (Sage), Scutellaria galericulata, Scutellaria lateriflora, Scutellaria nana, Scutellaria species (Skullcap), Sida acuta (Wireweed), Sida rhombifolia, Silene capensis, Syzygium aromaticum (Clove), Tagetes lucida (Mexican Tarragon), Tarchonanthus camphoratus, Tumera diffusa (Damiana), the genus Utricularia (Bladderwort), Zamia latifolia (Maconha Brava) can be included together with any of the above combinations, functional equivalents, and / or synthetic alternatives.

[0095]

[95] The plant material may be tobacco. Any type of tobacco may be used. This includes, but is not limited to, iron-pipe dried tobacco, Burley tobacco, Maryland tobacco, dark air-dried tobacco, Oriental tobacco, dark fire-cured tobacco, Perique tobacco, and Rustica tobacco. This also includes blends of the tobaccos described above.

[0096]

[96] Tobacco can include one or more of leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogeneous 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 can include a collection sheet of homogeneous (e.g., paper / slurry recon) tobacco, or collection pieces / strips formed from such a sheet.

[0098]

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

[0099]

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

[0100]

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

[0101]

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

[0102]

[0102] The filter element or at least one filter element (such as the terminal filter element) may be composed of tow of cellulose acetate or polypropylene. At least one filter element (such as the terminal filter element) may be composed of activated carbon. At least one filter element (such as the terminal element) may be composed of paper. The filter element or each filter element may be circumscribed, at least partially (such as entirely), by a plug wrap, such as a paper plug wrap.

[0103]

[0103] The end filter element (downstream end of the article / consumable) can be joined to the upstream element by an externally circumscribing chip layer, such as a chip paper layer, to form the article / consumable. The chip paper can have an axial length longer than the axial length of the end filter element, and thus the chip paper completely externally circumscribes the end filter element and a wrap layer surrounding any adjacent upstream element.

[0104]

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

[0105]

[0105] The article / consumable can 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 can include a paper tube. The spacer element can be externally circumscribed by a (paper) wrap layer.

[0106]

[0106] The present invention includes such combinations except where the described aspects and preferred features are clearly unacceptable or explicitly avoided.

[0107]

[0107] It will be recognized by those skilled in the art that features or parameters described in connection with any one of the above aspects may be applicable to any other aspect, except where mutually exclusive. Further, except where mutually exclusive, any feature or parameter described herein may be applicable to any aspect and / or may be combined with any other feature or parameter described herein.

Brief Description of the Drawings

[0108]

[0108] To enable an understanding of the present invention and to recognize further aspects and features thereof, embodiments illustrating the principles of the present invention will be discussed in more detail hereinafter with reference to the accompanying drawings.

Figure 1A

[0109] Figure 1A is a schematic diagram of a smoking substitute system.

Figure 1B

[0110] Figure 1B is a schematic diagram of a modified example of the smoking substitute system of Figure 1A.

Figure 2A

[0111] Figure 2A is a front view of a first embodiment of a smoking substitute system in which a consumable is engaged with a device.

Figure 2B

[0112] Figure 2B is a front view of a first embodiment of a smoking substitute system in which a consumable is detached from a device.

Figure 2C

[0113] Figure 2C is a cross-sectional view of a consumable of a first embodiment of a smoking substitute system.

Figure 2D

[0114] Figure 2D is a detailed view of an end portion of a device of a first embodiment of a smoking substitute system.

Figure 2E

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

Figure 3

[0116] Figure 3 is a schematic diagram of an embodiment.

DETAILED DESCRIPTION OF THE INVENTION

[0109]

[0117] Aspects and embodiments of the present invention will now be discussed with reference to the accompanying drawings. 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] Figure 1A is a schematic diagram providing a general overview of the smoking substitute system 100. The system 100 includes a smoking substitute device 101 and an aerosol-forming article in the form of a consumable 102, and the consumable 102 includes an aerosol-forming body 103. The system is configured to evaporate the aerosol-forming body by heating the aerosol-forming body 103 (to form a vapor / aerosol for inhalation by the user).

[0111]

[0119] In the system shown, the heater 104 forms part of the consumable 102 and is configured to heat the aerosol-forming body 103. In this variant, the heater 104 is electrically connectable to the power source 105, for example when the consumable 102 is engaged with the device 101. Due to the heat from the heater 104, the aerosol-forming body 103 evaporates, generating 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 so as to enable power supply to the heater 104 (i.e., for the purpose of heating the aerosol-forming body 103). Thus, control of 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, such as a battery or a rechargeable battery (e.g., a lithium-ion battery).

[0113]

[0121] System 100 further includes an I / O module that includes a connector 106 (e.g., in the form of a USB port, Micro USB port, USB-C port, etc.). Connector 106 is configured to connect to an external power source, such as a power outlet. Connector 106 may be used as an alternative to power source 105. That is, connector 106 may be electrically connectable to heater 104 to supply electricity to heater 104. In such embodiments, the device may not include a power source, and instead, the power source of the system may include connector 106 and an external power source (to which connector 106 provides an electrical connection).

[0114]

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

[0115]

[0123] System 100 also includes a user interface (UI) 107. Although not shown, UI 107 may include input means for receiving commands from a user. By the input means of UI 107, the user can control at least one form of operation of system 100. The input means may be in the form of, for example, buttons, touchscreens, switches, microphones, motion sensors, etc.

[0116]

[0124] UI 107 also includes output means for communicating information to the user. The output means may include, for example, lights (e.g., LEDs), display screens, speakers, vibration generators, etc.

[0117]

[0125] System 100 further includes a controller 108 configured to control at least one function of device 101. In the illustrated embodiment, controller 108 is a component of device 101, although in other embodiments, it may be separate from (but connectable to) device 101. Controller 108 is configured to control the operation of heater 104, for example, to control the voltage applied to heater 104 from power supply 105. Controller 108 may be configured to toggle the supply of power to heater 104 between an on state in which the full output voltage of power supply 105 is applied to heater 104 and an off state in which no voltage is applied to heater 104.

[0118]

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

[0119]

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

[0120]

[0128] FIG. 1B is a schematic diagram showing a variation of the system 100 of FIG. 1A. In the system 100' of FIG. 1B, heater 104 forms part of device 101 rather than consumable 102. In this variation, heater 104 is electrically connected to power supply 105.

[0121]

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

[0122]

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

[0123]

[0131] Device 201 includes a body 209 and a cap 210. In use, cap 210 is engaged at an end of body 209. Although not apparent from these figures, cap 210 is movable relative to body 209. In particular, cap 210 is slidable and can slide along the longitudinal axis of body 209.

[0124]

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

[0125]

[0133] Figure 2C shows a detailed cross-sectional view of the consumable 202 of the system 200. The consumable 202 is generally similar to a cigarette. In that regard, 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 in order to facilitate condensation of the vapor.

[0126]

[0134] The aerosol-forming substrate 213 is substantially cylindrical and is located at the upstream end 217 of the consumable 202 and includes the aerosol former of the system 200. In that regard, the aerosol-forming substrate 213 is configured to be heated by the device 201 to emit vapor. The emitted vapor is then entrained in an air stream flowing through the aerosol-forming substrate 213. The air stream is created by the user's act of inhaling at the downstream end 218 (i.e., the distal or mouth-side end) of the consumable 202.

[0127]

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

[0128]

[0136] To generate an aerosol, the aerosol-forming substrate 213 contains at least one volatile compound, such volatile compounds being intended to be evaporated / aerosolized and capable of providing a mood-enhancing effect and / or a medicinal effect to the user when inhaled. The aerosol-forming substrate 213 can further contain one or more additives. For example, such additives can be in the form of a humectant (e.g., propylene glycol and / or vegetable glycerin), a flavorant, a filler, an aqueous / non-aqueous solvent, and / or a binder.

[0129]

[0137] The end 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 end filter element 214 is in the form of a hollow filter element with holes 219 (e.g., for air flow) formed therein. The diameter of the holes 219 is 2 mm. The end filter element 214 is formed from a porous (e.g., monoacetate) filter material. As described above, the downstream end 218 of the consumable 202 (i.e., where the end filter 214 is located) forms the mouthpiece portion of the consumable 202 that the user inhales through. Air flow is drawn in from the upstream end 217, through the components of the consumable 202, and exits from the downstream end 218. The air flow 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 end filter element 214. Similar to the end filter 214, the upstream filter element 215 is in the form of a hollow filter element with holes 220 extending axially through the hollow filter element. In this way, the upstream filter 215 can act as an air flow 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 end filter element 214.

[0131]

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

[0132]

[0140] Although 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 end filter 214 is circumscribed by a chip layer, which also circumscribes a portion of the paper wrap layer (to connect the end filter 214 to the remaining components of the consumable 202). The upstream filter 215 and the end filter 214 are circumscribed by a further wrap layer in the form of a plug wrap.

[0133]

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

[0134]

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

[0135]

[0143] Device 201 includes a heater 204, and the heater 204 includes a heating element 223. The heater 204 forms part of the body 209 of the device 201 and is firmly attached to the body 209. In the illustrated embodiment, the heater 204 is a rod heater, and the heating element 223 has a circular cross-sectional profile. In other embodiments, the heater may be in the form of a blade heater (e.g., a heating element having a square cross-sectional profile) or a tubular heater (e.g., a heating element having a tubular shape).

[0136]

[0144] The heating element 223 of the heater 204 projects from the inner base of the cavity 222 along the longitudinal axis towards the opening 221. As is apparent from this figure, the length of the heating element (i.e., the length along the longitudinal axis) is smaller than the depth of the cavity 222. In this way, the heating element 223 does not project from the opening 221 or extend beyond the opening 221.

[0137]

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

[0138]

[0146] Alternatively, the heater 204 is movably attached to the body 209. The heater can be moved longitudinally so as to vary the longitudinal position of the heating element 223, thereby controlling the exposure of the consumable portion to the heating element.

[0139]

[0147] Device 201 further includes an electronic device cavity 224. A power source in the form of a rechargeable battery 205 (lithium-ion battery) is located in the electronic device cavity 224.

[0140]

[0148] Device 201 includes a connector in the form of a USB port 206 (i.e., forming part of the IO module of device 201). 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] 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 the microcontroller).

[0142]

[0150] Controller 208 is configured to control at least one function of device 202. For example, controller 208 is configured to control the operation of heater 204. Such control of the operation of heater 204 may be achieved by the controller toggling the electrical connection of the rechargeable battery 205 to the heater 204. For example, controller 208 is configured to control heater 204 in response to the user pressing button 212. Pressing button 212 may enable the controller to apply a voltage (from the rechargeable battery 205) to heater 204 (heating the heating element 223).

[0143]

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

[0144]

[0152] Device 201 includes additional input means in the form of a puff sensor 225 (i.e., in addition to button 212). The puff sensor 225 is configured to detect that the user has inhaled (i.e., sucked in) at the downstream end 218 of the consumable 202. The puff sensor 225 may be in the form of, for example, a pressure sensor, a flow meter, or a microphone. The puff sensor 225 is operably connected to the controller 208 within the electronics cavity 224, and thus a signal from the puff sensor 225 indicating the puff state (i.e., whether sucking or not sucking) forms an input to the controller 208 (and may thus be reacted upon by the controller 208).

[0145]

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

[0146]

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

[0147]

[0155] Device 301 includes a consumable detector sensor 328 and a puff sensor 325. The signal from the puff sensor may be used to effect a mode change from a first mode to a second mode, or from the second mode to the first mode, after detecting a predetermined puff signal from the user. In some embodiments, the predetermined puff signal may be, for example, that the puff by the user has exceeded a puff duration threshold. In some embodiments, the puff sensor 325 can provide a signal to the controller 308 for changing the mode from a first mode to a second mode, or from the second mode to the first mode, after detecting a predetermined 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, and the biosensor, in use, contacts the consumable and identifies the type of tobacco or nicotine level. The consumable detector sensor 328 can be an aerosol sensor, and the aerosol sensor detects the chemicals present in the aerosol from the consumable to detect the type of tobacco and / or nicotine level. The consumable detector sensor 328 is operably coupled to the controller 308. The consumable detector sensor 328 can signal 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, and the controller 308 selects an operating mode based on this 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 the first and second modes. The first mode may be regarded as the normal or standard mode. In the first mode, a first amount of nicotine is delivered to the user. The second mode may be regarded as the "boost" or "power" 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, the device delivers more nicotine to the user in the second mode than in the first mode.

[0150]

[0158] To achieve a difference in nicotine delivery between the operating modes, there are multiple operating mode mechanisms. Some of such mechanisms are exemplified here. However, it will be understood by those skilled in the art that other mechanisms are also 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. Accordingly, the device is capable of delivering a greater 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 enables the user to obtain a "stronger" consumable cycle in which more nicotine is delivered. A consumable cycle is the period of time 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 output for each puff made by the user. Accordingly, 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 can be selected by the user by using the user interface of the device. The user interface can include at least one of a button, a touch screen, a motion sensor, or voice recognition means. Any of these components may be used to select or change the operating mode of the device. In embodiments 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, and the default mode is one of a first or second operating mode. The device operates according to the default mode until the user changes the mode (e.g., using the user interface of the device). In some embodiments, the device is configured to allow the user to change the default mode. In some embodiments, the device is configured to select the default mode based on the 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 operating modes are the first and second modes. 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 to 170 °C. In this mode, the visibility of the generated vapor is lower. Additionally, in the first mode, the controller 208 is configured to deliver nicotine and flavor in the aerosol / vapor generated mainly from the aerosol-forming substrate 202 with minimal or zero aerosol visibility. The second mode is the normal / standard mode, and the visibility of the vapor generated from the aerosol-forming substrate 202 is greater than that in 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 the first or second mode throughout the consumable cycle. The operating temperature for the first mode can vary depending on the type of the selected aerosol-forming substrate 202.

[0156]

[0164] The controller 208 is configured to change the air flow through the device in order to vary the pressure drop in the consumable and ultimately vary the amount of vapor produced. Changing the air flow creates a pressure drop within 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. Accordingly, to operate the device in a first mode, the controller 208 adjusts the air flow to create a higher pressure drop. Additionally, the device includes a mechanism for controlling the air flow rate entering the device. Alternatively, the device can control the opening of an inlet port (not shown) of the device to vary the pressure drop of the air flow entering the device. Similarly, the opening of the air flow passage formed in the device can be changed to vary 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 in order to vary the amount of contact between the heater and the substrate according to a 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 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 can change the visibility of the vapor. In the first mode, as a result of the reduced exposure of the aerosol-forming substrate 202, the amount of heat transferred to the aerosol-forming substrate 202 is also reduced. Accordingly, the controller 202 can 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 maintain the heater in a fixed state 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 in the following claims, or in the accompanying drawings are, in their particular forms, or in means for performing the disclosed functions, or in methods or processes for obtaining the disclosed results, appropriately expressed, and may be used, separately or in any combination of such features, in their various forms, to implement the present invention.

[0159]

[0167] Although the present invention has been described with the above-exemplified embodiments, many equivalent modifications and variations will be apparent to those skilled in the art when this disclosure is provided. Accordingly, the above-exemplified embodiments of the present invention 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.

[0160]

[0168] To avoid any doubt, any theoretical explanations provided in this specification are provided for the purpose of improving the reader's understanding. The inventors do not wish to be bound by any of these theoretical explanations.

[0161]

[0169] Any item names used in this specification are for the purpose of structure only and should not be construed as limiting the subject matter described.

[0162]

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

[0163]

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

[0164]

[0172] The words "preferred" and "preferably" are used in this specification to refer to embodiments of the invention that can provide certain benefits under some circumstances. However, it should be understood that other embodiments may also be preferred under the same or different circumstances. Accordingly, 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 this disclosure or the scope of the claims.

Claims

**Claim 1** A non-combustion heating device, a heater, and a controller configured to operate the heater to heat an aerosol-forming substrate engaged with the heater to a predetermined operating temperature, comprising: the controller is configured to operate the heater in at least two modes, the at least two modes include a first mode in which vapor is formed from the aerosol-forming substrate with a first visibility and a second mode in which vapor is formed from the aerosol-forming substrate with a second visibility, wherein the first visibility is lower than the second visibility, a non-combustion heating device. **Claim 2** 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, wherein the first predetermined operating temperature is lower than the second predetermined operating temperature, The non-combustion heating device according to claim 1. **Claim 3** The first predetermined operating temperature is 140°C to 170°C, The non-combustion heating device according to claim 2. **Claim 4** The second predetermined operating temperature is higher than 170°C, The non-combustion heating device according to claim 2 or 3. **Claim 5** The controller is configured to change the air flow to control the pressure drop based on the selected mode, The non-combustion heating device according to any one of claims 1 to 4. **Claim 6** The controller is configured to change the air flow such that the pressure drop in the first mode is greater than the pressure drop in the second mode, The non-combustion heating device according to claim 5. **Claim 7** The heater is adapted to move relative to the aerosol-forming substrate to vary the amount of contact between the heater and the aerosol-forming mass according to the selected mode, The non-combustion heating device according to any one of claims 1 to 6. **Claim 8** The amount of contact of the heater with the aerosol-forming substrate in the first mode is less than the amount of contact of the heater with the aerosol-forming substrate in the second mode, The non-combustion heating device according to claim 7. **Claim 9** Further comprising user input means for mode selection by the user, The non-combustion heating device according to any one of claims 1 to 8. **Claim 10** further comprising output means configured to indicate to the user the currently selected mode A non-combustion heating device according to any one of claims 1 to 9.

11. A non-combustion heating device comprising a heater, a controller configured to operate the heater to heat an aerosol-forming substrate engaged with the heater to a predetermined operating temperature and wherein the predetermined temperature is 140°C to 170°C. A non-combustion heating device.

12. The controller is configured to operate the heater at a second predetermined operating temperature higher than 170°C. A non-combustion heating device according to claim 11.

13. A method of reducing the amount of vapor produced by a non-combustion heating device, the method comprising the non-combustion heating device including a heater and a controller, the controller being configured to operate the heater to heat an aerosol-forming substrate engaged with the heater to a predetermined temperature, and reducing the predetermined operating temperature to a temperature of 140°C to 170°C including.

14. A non-combustion heating device according to any one of claims 1 to 12, and an aerosol-forming article comprising a substitute smoking system.

15. The aerosol-forming article is a non-combustion heating (HNB) consumable. A substitute smoking system according to claim 14.

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