Aerosol generating device, aerosol generating system, and control method

Abstract

The aerosol-generating device (1) includes a furnace (11) configured to receive and heat an aerosol-generating substrate (31) to generate an aerosol, and a control circuit (12) configured to control the furnace. The control circuit includes a communications module (17) configured to communicate with a remote device (2) and is configured to enable or disable the communications module depending on the current operating state of the furnace, which is determined by the position of the movable cover (15) and possibly also by a temperature sensor (16). By limiting the operating states for which the communications module is enabled, the control circuit can ensure that sufficient power is provided for both substrate heating and communications, reducing the energy consumption of the device.

Description

[Technical Field]

[0001] The present disclosure relates to aerosol-generating devices configured to heat an aerosol-forming substrate to generate an aerosol. Such devices may heat or vaporize tobacco or other suitable aerosol-forming substrate materials by conduction, convection, and / or radiation, rather than by combustion, to generate an aerosol for inhalation. [Background technology]

[0002] The popularity and use of risk reduction or risk modification devices (also known as vaporizers) has grown rapidly in recent years as an aid to assisting regular smokers who wish to quit smoking traditional tobacco products such as cigarettes, cigars, cigarillos, and cigarettes. A variety of devices and systems are available that heat or warm aerosolizable substances, as opposed to burning tobacco in traditional tobacco products.

[0003] A commonly available risk reduction or risk modification device is the substrate-heated aerosol-generating device or heat-and-burn device. This type of device generates an aerosol or vapor by heating an aerosol-generating substrate, typically containing moist tobacco or other suitable aerosolizable material, to temperatures typically ranging from 150°C to 350°C. By heating rather than burning or combusting the aerosol-generating substrate, an aerosol is released that contains the ingredients desired by the user but without the toxic and carcinogenic by-products of combustion and burning. Furthermore, aerosols produced by heating tobacco or other aerosolizable material typically do not contain the burnt or bitter taste that can be unpleasant to users due to combustion and burning. Therefore, the substrate does not require sugars and other additives typically added to such materials to make the smoke and / or vapor more palatable to users. Summary of the Invention

[0004] It would be desirable for such an aerosol-generating device to communicate with a remote device, for example, to retrieve usage data from the aerosol-generating device or to enable remote control of the aerosol-generating device or control of the aerosol-generating device in a manner that expands the range of possible user inputs. However, such communication uses power, and this power use competes with the power use required to heat the aerosol-generating substrate. Therefore, it would be desirable to provide an aerosol-generating device that can communicate with a remote device without affecting the aerosol-generating device's ability to heat the aerosol-generating substrate.

[0005] According to a first aspect, the present disclosure provides an aerosol generating device including a furnace configured to receive and heat an aerosol-generating substrate to generate an aerosol, and a control circuit configured to control the furnace, the control circuit including a communications module configured to communicate with a remote device, the control circuit configured to enable or disable the communications module depending on a current usage state of the furnace.

[0006] The aerosol-generating device is typically designed to provide the power required by the furnace, but not significantly more. By enabling or disabling the communications module depending on the current state of use of the furnace, the control circuitry can ensure that sufficient power is provided for both heating the aerosol-generating substrate and communicating with the communications module without compromising the effectiveness of either heating or communications.

[0007] On the other hand, the communication module may consume energy available in the aerosol generation device. By limiting the use conditions in which the communication module is enabled, the energy consumption of the aerosol generation device can be reduced.

[0008] Optionally, said furnace includes an opening and a movable cover for said opening, and said current use state of said furnace includes the position of said movable cover.

[0009] By determining the current usage status of the heating furnace based on the position of the movable cover, the control circuit can infer whether the aerosol generating device is currently in use and thereby determine whether it is appropriate to enable or disable the communication module.

[0010] Optionally, said control circuitry is configured to enable said communications module when said movable lid is in an open position.

[0011] When the movable lid is in the open position, the furnace is open, which indicates that the furnace is in use, has recently been used, or is likely to be used soon, as the furnace is opened to insert or remove aerosol-generating substrates.

[0012] Optionally, the current use state of said furnace comprises a change in the position of said movable lid.

[0013] The change in position of the movable lid may be intentionally caused by the user of the device and is another indicator that the furnace is in use, has recently been used, or will soon be used.

[0014] Optionally, the movable lid is a sliding lid configured to move along a rail.

[0015] Providing a movable cover in the form of a sliding cover has the advantage that the movable cover is easy to operate, since it remains attached to the aerosol generating device and has a clearly defined range of motion.

[0016] Optionally, the furnace is configured to receive a consumable through the opening, the consumable being longer than the furnace such that when an aerosol-generating substrate is received in the furnace, the movable lid is in an open position.

[0017] Optionally, the movable lid is biased to a closed position, which allows the movable lid to automatically close the opening, for example, the movable lid may move to a closed position when no consumable is present.

[0018] Optionally, the control circuit is configured to control the furnace to one or more aerosol generation states, and the current usage state of the furnace includes the current aerosol generation state of the furnace.

[0019] The aerosol generation state may be associated with the power consumption of the furnace, and the control circuit may be configured to determine that it is inappropriate to enable the communication module while simultaneously supplying the required power to the furnace in a particular aerosol generation state.

[0020] Optionally, the aerosol generating device further comprises a temperature sensor, and the current operating condition of the furnace comprises an indication of the temperature measured by the temperature sensor.

[0021] The temperature measured by the temperature sensor is a further indicator of whether the furnace requires power and / or whether an aerosol generation session has recently occurred, is currently occurring, or will soon occur.

[0022] Optionally, said control circuitry is configured to enable said communication module when a current usage state of said furnace is an inactive state.

[0023] By enabling the communications module, especially when the furnace is inactive, stress on the power supply for the aerosol generating device may be reduced.

[0024] Optionally, said communication module is configured to transmit usage data to said remote device.

[0025] Optionally, said communications module is configured to receive instructions from said remote device, and said control circuitry is configured to control said furnace based on said instructions.

[0026] Optionally, the control circuitry is configured to delay disabling the communication module until a communication session is completed, which has the advantage of increasing the reliability of data transmission from the aerosol generating device to the remote device and / or command transmission from the remote device to the aerosol generating device.

[0027] Optionally, said aerosol generating device further comprises a communication indicator operable to indicate whether said communication module is enabled or disabled.

[0028] By displaying whether the communication module is enabled or disabled, the user can be prompted to keep the aerosol generating device within the communication range of the remote device while communicating with the remote device.

[0029] According to a second aspect, the present disclosure provides a system including an aerosol generating device as described above and a remote device, the remote device configured to execute a software application for communicating with the aerosol generating device.

[0030] Optionally, the communication module is a wireless communication module and the remote device is a user terminal, which allows a user to conveniently use both the aerosol generating device and the remote device together to enhance user interface capabilities compared to the aerosol generating device alone.

[0031] According to a third aspect, the present disclosure provides a method for controlling an aerosol-generating device including a furnace configured to receive and heat an aerosol-generating substrate to generate an aerosol, and a communications module configured to communicate with a remote device, the method including enabling or disabling the communications module depending on a current usage state of the furnace.

[0032] The method may be performed by control circuitry located within the aerosol generating device, which may store the method as computer program instructions in a memory and execute the instructions using a processor, or the method may be hard-coded into the control circuitry.

[0033] The method may also be stored as computer program instructions on a storage medium, such that when the instructions are read from the storage medium and executed by the control circuitry, the control circuitry performs the method.

[0034] According to a first option of the method, the furnace of the aerosol generating device includes an opening and a movable cover for the opening, and the current use state of the furnace includes the position of the movable cover.

[0035] According to a first embodiment of a first alternative, the method includes enabling the communication module when the movable lid is in an open position.

[0036] According to a second embodiment of the first alternative, the current use state of the furnace includes a change in the position of the movable lid.

[0037] According to a third embodiment of the first alternative, the method is carried out in the aerosol generating device, wherein the movable lid is a sliding lid configured to move along a rail.

[0038] Optionally, the method includes controlling the furnace to one or more aerosol-generating states, and a current use state of the furnace includes a current aerosol-generating state of the furnace.

[0039] Optionally, the method is performed in the aerosol generating device further comprising a temperature sensor, and the current operating condition of the furnace comprises an indication of the temperature measured by the temperature sensor.

[0040] Optionally, the method comprises enabling the communication module when a current usage state of the furnace is inactive.

[0041] Optionally, the method comprises controlling said communication module to transmit usage data to said remote device.

[0042] Optionally, the method comprises controlling said communications module to receive instructions from said remote device, and controlling said furnace based on said instructions.

[0043] Optionally, the method comprises delaying disabling of the communication module until the communication session is completed.

[0044] Optionally, the method is performed in the aerosol generating device further including a communication indicator, the method including controlling the communication indicator to indicate whether the communication module is enabled or disabled. [Brief explanation of the drawings]

[0045] [Figure 1A] FIG. 1 is a schematic block diagram of an aerosol generation system associated with a first state of use. [Figure 1B] FIG. 1 is a schematic block diagram of an aerosol generation system associated with a second state of use. [Figure 2] FIG. 2 is a schematic block diagram of a control circuit 12. [Figure 3] FIG. 2 is a schematic timing diagram for controlling a furnace. [Figure 4A] FIG. 1 is a schematic external view of an aerosol generating device. [Figure 4B] FIG. 1 is a schematic external view of an aerosol generating device. [Figure 4C] FIG. 1 is a schematic cross-sectional view of an aerosol generating device. [Figure 4D] FIG. 1 is a schematic cross-sectional view of an aerosol generating device. DETAILED DESCRIPTION OF THE INVENTION

[0046] 1A and 1B are schematic block diagrams of an aerosol generation system in different states of use.

[0047] The system includes an aerosol generating device 1 and a remote device 2 .

[0048] The aerosol-generating device 1 includes a furnace 11 configured to receive and heat an aerosol-generating substrate to generate an aerosol, and a control circuit 12 configured to control the furnace 11.

[0049] The furnace 11 in this embodiment takes the form of a pot with an internal cavity in which the aerosol-generating substrate can be positioned for heating. The pot may, for example, have a generally cylindrical shape. One or more walls of the pot may be constructed from a ceramic or metallic material.

[0050] The furnace 11 includes at least one heating element 13 disposed adjacent to or within the wall of the furnace. By way of example, the heating element 11 may take the form of a resistive heater deposited as a track on the wall of the furnace, a thin-film heater arranged to wrap around the outer wall of the furnace, embedded within the wall of the furnace, or a blade heater extending into the interior cavity. Generally, any type of heating element 13 may be used. The heating element 13 is preferably an electric heating element that can be directly controlled using an electronic switch (e.g., a transistor). The heating element 13 may alternatively be a chemical heating element configured to burn fuel or to cause an exothermic chemical reaction, in which case the heating element 13 may be controlled using, for example, a valve controlling the supply of chemicals.

[0051] The furnace 11 may additionally include one or more insulating elements 14 configured to reduce heat leakage from the furnace to other parts of the aerosol generation device 1 .

[0052] The aerosol-generating substrate in this example is a solid substrate. The solid substrate may include, for example, nicotine or tobacco and an aerosol-forming agent. The tobacco may take the form of various materials, such as cut tobacco, granulated tobacco, tobacco leaf, and / or reconstituted tobacco. Suitable aerosol-forming agents include polyols (such as sorbitol, glycerol, and glycols such as propylene glycol or triethylene glycol), non-polyols (such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, triacetin, triethylene glycol diacetate, triethyl citrate, esters such as glycerin or vegetable glycerin, etc.). In some embodiments, the aerosol-generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol. The substrate may also include at least one of a gelling agent, a binder, a stabilizer, and a humectant.

[0053] In this example, furnace 11 includes an opening at one end of the pot shape of furnace 11 and further includes a movable lid 15. Movable lid 15 is configured to move between a closed position (shown in FIG. 1A) in which lid 15 covers the opening of furnace 11 and an open position (shown in FIG. 1B) in which lid 15 does not cover the opening of furnace 11.

[0054] More specifically, in this example, the movable lid 15 takes the form of a hinged lid with a clearly defined range of motion. In other examples, the lid 15 may be more loosely attached to the aerosol generation device 1 (e.g., via a tether) or may not be permanently attached to the aerosol generation device (e.g., the lid 15 is held in the closed position only by a fastener or gasket, or the lid 15 is a plug or stopper). For such a more loosely attached lid 15, the open position may be any position other than the closed position.

[0055] The movable cover 15 can be used in a number of different cases.

[0056] As shown in FIG. 1B , in some cases, the aerosol-generating substrate 31 is provided as part of a consumable product 3 that is longer than the oven 11. The consumable product 3 may take the form of, for example, a cigarette, with the substrate 31 wrapped in a paper wrapper. As a result of the consumable product 3 being longer than the oven 11, the movable lid 15 must be in the open position (shown in FIG. 1B ) when the aerosol-generating substrate 31 is received within the oven 11. However, when the consumable product 3 is consumed and discarded, the movable lid 15 can be moved to a closed position to prevent any other materials or objects from unintentionally entering the oven 11.

[0057] Alternatively, the aerosol-generating substrate 31 may be sized to fit within the furnace 11 (the substrate 31 being provided as a packaged consumable or as loose material), and the movable lid 15 may be moved to a closed position during heating of the aerosol-generating substrate 31 to retain the substrate 31 within the furnace 11 and / or to improve heating efficiency by reducing heat loss through the opening.

[0058] In either case, the movable lid 15 may be biased toward the closed position so that it will return to the closed position unless it is manually held open or blocked by a consumable 3 currently extending through the opening. For example, if the movable lid 15 takes the form of a hinged lid, the hinge may be biased toward the closed position by a spring.

[0059] As a further option, in addition to biasing the movable lid 15 from at least one first open position toward the closed position, the movable lid 15 may be biased from at least one second open position toward the stable open position. In other words, the movable lid 15 may have a bistable configuration in which the movable lid 15 is biased toward either the closed position or the stable open position depending on its current position.

[0060] The control circuit 12 may be configured to detect the position of the movable lid 15. This can be done in a number of ways. For example, the lid 15 may include an electrical conductor configured to complete a circuit when in the open position. Alternatively, the opening may include a push switch that is closed when the lid 15 is in the closed position. Alternatively, the lid 15 may include a magnet, and the aerosol generation device 1 may include a Hall effect sensor positioned to detect the distance between the sensor and the magnet.

[0061] The present invention is generally applicable to any type of furnace and any type of aerosol-generating substrate. For example, furnace 11 may instead be configured to receive and heat a liquid substrate. In such cases, the liquid substrate may be transferred to furnace 11 through a tube or stored in a separate tank. Thus, the opening and movable lid 15 of furnace 11 may be omitted. Alternatively, furnace 11 itself may function as a tank or receive a tank containing the liquid substrate, in which case the opening and movable lid 15 may also be present.

[0062] Furthermore, the aerosol generation device 1 optionally includes a temperature sensor 16. The temperature sensor 16 is preferably integrated with the furnace 11, but may be located adjacent to the furnace 11 or may be positioned to measure the temperature of a different part of the aerosol generation device 1, such as the temperature of the control circuit 12.

[0063] The control circuit 12 includes a communication module 17 configured to communicate with the remote device 2. The communication module 17 preferably includes a wireless communication module. The wireless communication module may be, for example, a standardized communication module such as a Bluetooth® or WiFi® transceiver. The communication module 17 may additionally or alternatively include a wired communication module, such as a USB module.

[0064] The control circuitry 12 is configured to control the enabling and disabling of the communication module 17. The communication module 17 may be a combination of hardware and software, and enabling / disabling the communication module may comprise enabling / disabling a portion of the hardware, a portion of the software, or both.

[0065] FIG. 2 is a schematic block diagram showing additional, optional details of control circuit 12.

[0066] In addition to the communications module 17, the control circuitry 12 may include a processor 1201 configured to execute instructions and a memory 1202 configured to store instructions 1203 defining one or more control methods for controlling the furnace 11 and the communications module 17. The instructions 1203 may be installed or updated via communication with the communications module 17. However, the control circuitry 12 need not have such a general-purpose architecture in all embodiments. For example, the control circuitry 12 may instead include an application-specific integrated circuit (ASIC) configured to control the furnace 11 and the communications module 17 without substantially storing data in memory.

[0067] Referring again to FIGS. 1A and 1B, the remote device 2 includes a communication module 21 and a user interface 22 and is configured to run a software application for communicating with the aerosol generation device 1.

[0068] The communication module 21 may be similar to the communication module 17 of the aerosol generating device 1 .

[0069] The user interface 22 may include, for example, a touch screen, a display, and / or one or more buttons. The user interface 22 may be configured to display an application interface through which a user can view information about the aerosol generation device 1 and / or through which the user can remotely configure or control the aerosol generation device 1.

[0070] For example, the remote device 2 can be a user terminal such as a smartphone, tablet, laptop, PC, etc. Preferably, the remote device is a user terminal and the communication modules 17 and 21 are wireless communication modules, so that the user of the aerosol generating device 1 can also conveniently use an application interface on the remote device 2. This allows the user to interact with the aerosol generating device 1 in more ways without requiring additional user interface elements on the aerosol generating device 1 itself.

[0071] The aerosol-generating device 1 and the remote device 2 may communicate directly with each other or may communicate over one or more networks. For example, the software application on the remote device 2 may be a web-based application (e.g., running on a server or in the cloud).

[0072] 1A, 1B and 2 provide structural details and optional structural features of the aerosol generating device 1 and the remote device 2. The next section of the description describes a control method that may be performed with such an aerosol generating device 1, e.g., executed by the control circuit 12.

[0073] Control circuitry 12 is configured to control furnace 11 to heat. For example, control circuitry 12 may provide or control the supply of power to furnace 11 when aerosol generation is desired. Control circuitry may also be configured to control the heating rate of furnace 11 (i.e., the amount of power dissipated as heat by the furnace), for example, by varying a voltage signal provided to furnace 11 or by using pulse width modulation of a signal provided to furnace 11.

[0074] In one example shown in Figure 3, control circuitry 12 is configured to control furnace 11 to go through four aerosol generation states during an aerosol generation session, where the t-axis represents time and the T-axis represents temperature.

[0075] In the first state, which lasts from a start time t0 to a first time t1, the temperature T rises relatively rapidly from a start temperature T0 (e.g., ambient temperature) to a peak temperature T2 that is at least high enough to cause the aerosol-generating substrate to emit an aerosol. The start time t0 may be the time when a user provides a user input to initiate an aerosol-generating session via a user input element on the aerosol-generating device 1 or via the user interface 22 on the remote device 2. The first state requires the supply of a relatively high amount of power to raise the temperature T.

[0076] In a second state, which lasts from a first time t1 to a second time t2, the temperature T is maintained at or near the peak temperature T2. The second state may be a state in which a user inhales one or more puffs of aerosol from the aerosol-generating substrate 31. The second state requires less power to be supplied than the first state, as power is only needed to maintain the temperature T.

[0077] In a third state, which lasts from the second time t2 to a third time t3, the temperature T is allowed to drop below the peak temperature T2 until the temperature T reaches a safe temperature T1. The safe temperature T1 may be, for example, a temperature at which the aerosol-generating substrate 31 can be safely removed from the furnace 11 or a temperature at which a new aerosol-generating session can be safely initiated. The third state requires the supply of less power than the second state, and may not require any power at all because the temperature T is allowed to drop.

[0078] In a fourth state, which lasts from a third time t3 to a fourth time t4, the temperature T is allowed to drop again to the initial temperature T0 or ambient temperature. The fourth state does not require power to the furnace 11 because the temperature T is allowed to drop further and the aerosol generation session has ended.

[0079] The temperatures T0, T1, and T2 may be measured temperatures or estimated based on the heating and cooling characteristics of the furnace 11. Meanwhile, the periods (t1-t0), (t2-t1), (t3-t2), and (t4-t3) may be predetermined or determined according to the corresponding aerosol generation or temperature thresholds being met. In one example, T2 is 230° C., (t1-t0) is 20 seconds, (t2-t1) is 250 seconds, and (t3-t2) is 20 seconds.

[0080] Generally, the control circuitry 12 may be configured to control the furnace 11 to enter any one or more aerosol-generation states during an aerosol generation session. Each aerosol-generation state may include a respective temperature profile. Transitions between aerosol-generation states may be controlled based on, for example, one or more of timing by a timer in the control circuitry 12, temperature measurements obtained from the temperature sensor 16, and user input received via an input interface of the aerosol generation device or from a remote device 2 via the communication module 17.

[0081] Additionally, the control circuitry 12 is configured to enable or disable the communication module depending on the current operating state of the furnace 1204. The current operating state may be determined by the control circuitry 12 and / or stored in the memory 1202 as needed.

[0082] In the case of the first control, the current use state 1204 of the furnace is a set of information including the position of the movable cover 15. Possible positions indicated in the current use state may include, for example, a "closed position," an "unclosed position," and an "open position."

[0083] 1A and 1B, the control circuit 12 is configured to enable the communication module 17 when the movable cover 15 is in the open position (shown in FIG. 1B) and to disable the communication module 17 when the movable cover 15 is in the closed position (shown in FIG. 1A). This configuration has the advantage that the aerosol generation device 1 only consumes power for communication with the communication module 17 when the aerosol generation device 1 is currently being used, will soon be used, or appears to have been used recently for aerosol generation. As a result, the aerosol generation device 1 does not consume power between aerosol generation sessions.

[0084] Additionally or alternatively, the current use state 1204 of the furnace 11 may include a change in the position of the movable cover 15. For example, the use state may indicate whether the position is "closed" or "unclosed" within a predetermined period of time (e.g., 5 seconds). The control circuit 12 may be configured, for example, to enable the communication module 17 for a predetermined period of time after detecting that the position of the movable cover 15 has changed. A change in the position of the movable cover 15 indicates that a user is interacting with the aerosol generation device 1, and therefore, this configuration provides an alternative method of enabling the communication module 17 when a user has most recently interacted with the aerosol generation device 1.

[0085] Additionally or alternatively, the control circuit 12 may be configured to enable or disable the communications module 17 in response to a predetermined series of changes in the position of the movable cover 15 and / or based on the current enabled / disabled state of the communications module 17. For example, when the control circuit 12 detects a series of changes in the position of the movable cover 15, such as from an open position to a closed position to an open position, the control circuit 12 switches the communications module 17 from a currently disabled state to an enabled state, or from a currently enabled state to a disabled state.

[0086] Additionally or alternatively, the current use state 1204 of the furnace 11 may include the current aerosol generation state of the furnace (such as the aerosol generation state described above with respect to FIG. 3).

[0087] Preferably, control circuitry 12 is configured to enable communication module 17 only when the current use state 1204 of furnace 11 is inactive. For example, control circuitry 12 preferably disables communication module 17 when furnace 11 is in any of the aerosol-generating states described above with respect to FIG.

[0088] Alternatively, considering that the first state (t0-t1) in Figure 3 requires the supply of relatively high power to the furnace 11, the aerosol generation device 1 may not be able to effectively supply this required power while simultaneously operating the communication module 17, and therefore the control circuit 12 may preferably disable the communication module 17 to allow aerosol generation to occur properly. On the other hand, in the third and fourth states (t2-t4) in Figure 3, less power is required by the furnace 11, and the control circuit 12 may be configured to enable the communication module 17.

[0089] Because control circuitry 12 controls the current aerosol-generation state, this current aerosol-generation state is immediately known to control circuitry 12 for determining whether to enable or disable communications module 17. As a further alternative, current furnace use state 1204 may include an indication of the temperature measured by temperature sensor 16. For example, current furnace use state 1204 may include an indication of whether the measured temperature was above or below a most recent activation threshold T4; if the temperature exceeds threshold T4, control circuitry 12 detects that furnace 11 has been recently used, even if control circuitry 12 is not currently controlling furnace 11 to be in an aerosol-generation state.

[0090] As a further alternative, the current usage status 1204 may include a measurement of the current or power currently being supplied to the furnace 11, and the control circuit 12 disables the communication module 17 if the current or power exceeds a threshold.

[0091] Once communication module 17 is enabled according to one of the criteria described above, communication module 17 attempts to establish a connection to communication module 21 of remote device 2. Establishing this connection may be accomplished by detecting a broadcast signal emitted by remote device 2 indicating its availability and responding to the broadcast signal. Alternatively, communication module 17 may generate a broadcast signal and wait for a response from remote device 2. Establishing this connection may require passing a security check, such as Bluetooth® pairing. Communication module 17 may use a similar procedure when attempting to re-establish a lost connection.

[0092] Control circuitry 12 may be configured to disable communications module 17 after a predetermined period of time (e.g., one minute) if communications module 17 fails to establish a connection. This avoids continually broadcasting or listening for broadcasts when remote device 2 is not physically nearby (in the case of direct communication) or when remote device 2 is not connected to a network (in the case of communication over a network). Control circuitry 12 may follow a similar procedure if communications module 17 fails to re-establish a lost connection within a predetermined period of time.

[0093] Additionally, control circuitry 12 may be configured not to disable communications module 17 while a communications session is in progress. For example, if communications module 17 has only sent or received part of the current message when disabling communications module 17 is triggered according to one of the above procedures, control circuitry 12 may delay disabling communications module 17 until the communications session is complete. This has the advantage of reducing the risk of losing data.

[0094] Once a communication connection between the aerosol generating device 1 and the remote device 2 has been established, the connection can be used for a number of purposes.

[0095] In one example, the control circuitry may be configured to store usage data 1205 in the memory 1202. The usage data may include, for example, one or more of a tally of the number of aerosol generation sessions performed using the aerosol generating device 1, a timestamp for each aerosol generation session, the number of puffs of aerosol inhaled in each aerosol generation session (which may be detected by identifying the temperature drop associated with the user drawing air and aerosol from the furnace 11), and / or the type of consumable or aerosol-generating substrate used in each aerosol generation session.

[0096] The control circuitry 12 may further be configured to transmit usage data 1205 to the remote device 2 when the communication connection is established.

[0097] When transmitting data to remote device 2, control circuitry 12 may be configured to retain a copy of usage data 1205 until receipt of the usage data is acknowledged by remote device 2. This increases the reliability of communications over the communications connection. Alternatively, control circuitry 12 may be configured to delete usage data 1205 from memory 1202 when it is transmitted.

[0098] The software application on the remote device 2 may be configured, for example, to perform statistical analysis of the usage data 1205, to transmit the usage data 1205 to a server or cloud, and / or to present the usage data 1205 or the statistical analysis of the usage data 1205 via the user interface 22.

[0099] In another example using the communication connection between communication module 17 and communication module 21, remote device 2 can use the communication connection to send commands to communication module 17. Control circuitry 12 can then control furnace 11 based on the commands.

[0100] For example, the instructions may define a new set of aerosol-generation conditions for an aerosol-generation session. Control circuitry 12 may then control furnace 11 to have the new set of aerosol-generation conditions the next time an aerosol-generation session is performed. As described above with respect to FIG. 3, the new set of aerosol-generation conditions may specify one or more target temperatures and one or more time periods for the set of aerosol-generation conditions.

[0101] Additionally or alternatively, the instructions may directly instruct the control circuitry 12 to begin controlling the aerosol generation session.

[0102] As a further possibility, the instructions may instruct control circuitry 12 to modify usage data 1205 that control circuitry 12 is configured to record in memory 1202 .

[0103] In another example, the connection can be used to communicate the current status of the aerosol generation device 1 to the remote device 2. For example, the current status of the aerosol generation device 1's internal power source (e.g., battery) can be communicated to the remote device 2. Additionally or alternatively, the current usage state of the furnace can be communicated to the remote device 2. The current usage state can be the current stage of an aerosol generation session, such as one of the aerosol generation states described above with reference to FIG. 3. The remote device 2 can display at least a portion of the status on the user interface 22. Transmission of the furnace's current usage state can be enabled during an aerosol generation session in some cases because it does not need to involve a significant amount of data or place significant stress on the power source. Advantageously, the usage state of the furnace can be provided to the remote device 2 (e.g., a smartphone) to provide an indication of the device status. Because the aerosol generation device 1 may not optimally support large amounts of data communication with the remote device 2 during some or all stages of the described aerosol generation session, such information about the furnace's usage state can allow the smartphone to determine whether to transmit data, particularly large data transmissions, to the aerosol generation device 1. As explained above, the aerosol generating device 1 enables or disables the communication module depending on the current usage status of the furnace.

[0104] 4A to 4D are a schematic external view and a schematic cross-sectional view of a more detailed example of the aerosol generating device 100. This more detailed example can be operated according to any of the control methods described above.

[0105] In the case of the aerosol generating device 100, the movable cover 15 takes the form of a sliding cover 106. The sliding cover 106 is configured to move between a closed position shown in Figure 4A and an open position shown in Figure 4B.

[0106] When the sliding lid 106 is in the open position, the opening 104 in the furnace 114 is exposed to receive the aerosol-generating substrate.

[0107] The sliding cover 106 may be configured to move freely, may be biased toward a closed position, or may have a bistable configuration in which the sliding cover 106 is biased toward a closed or open position depending on the current position of the sliding cover 106.

[0108] Additionally, as shown in the detailed embodiment, the aerosol generating device 100 can include a user interface 112. The user interface 112 can be at least partially disposed on the housing 102 of the device 100.

[0109] The user interface 112 may include one or more user inputs, such as buttons and sliders, for providing user input to the control circuitry 12. For example, a button may be used to trigger the start of an aerosol generation session.

[0110] Additionally, user interface 112 may include one or more status indicators, such as a light source (e.g., an LED), or a haptic output device (a vibrator or sound generator), which status indicators are controlled by control circuitry 12. The haptic output device may be disposed within housing 102, and even the light source may be disposed within housing 102 if housing 102 includes one or more transparent or translucent portions.

[0111] In one example, the status indicator displays the current operating state of the furnace, which may simply be a warning indicator that activates when the temperature of the aerosol generating device 1 exceeds a threshold, or may be a more detailed indicator of the progress of the aerosol generating session.

[0112] In another example, the status indicator may indicate whether the communication module 17 is enabled or disabled, which may indicate to the user, for example, that the aerosol generating device 1 should be kept within communication range of the remote device 2.

[0113] 4C and 4D are partial cross-sectional views showing additional details of the aerosol generating device 100 inside the housing 102. FIG.

[0114] First, the sliding cover 106 is coupled to a rail 116 that constrains the sliding cover 106 to move along the rail 116. In Fig. 4C, the peg coupled to the sliding cover 106 is near a first end of the rail 116, and the sliding cover 106 is in a closed position. Meanwhile, in Fig. 4D, the peg coupled to the sliding cover 106 is near a second end opposite the first end of the rail 116, and the sliding cover 106 is in an open position.

[0115] 4C and 4D, the aerosol generating device 100 additionally includes an internal power source 118 (e.g., a battery). The internal power source 118 is configured to provide power to the control circuit 12 and the furnace 114 (furnace 11). The internal power source 118 may define a limit on the power that can be provided to the furnace 114 and / or the communications module 17, and power usage restrictions (e.g., disabling the communications module 17) may be implemented to reduce stress on the internal power source 118. In other embodiments, the aerosol generating device 100 may be configured to connect to an external power source to recharge the internal power source 118 or to directly power the furnace 114 and / or the communications module 17. If an external power source is present, the internal power source 118 may be omitted.

[0116] Also as shown in Figures 4C and 4D, in this example the control circuitry 12 takes the form of one or more PCB sections 120 on which the communications module 17 is located.

[0117] Additionally, a heat sink 122 may be attached to the furnace 114 to control heat dissipation within the housing 102. While it is most desirable for heat not to leak out of the furnace 114, the heat sink 122 serves to direct any heat that does leak from the furnace 114 out of the housing 102 rather than heating the control circuitry 120 or the internal power supply 118.

Claims

1. a furnace configured to receive and heat the aerosol-generating substrate to generate the aerosol; a control circuit configured to control the furnace; An aerosol generating device comprising: the control circuitry includes a communication module configured to communicate with a remote device; the heating furnace includes an opening and a movable cover for the opening, the control circuit is configured to control enabling and disabling of the communication module according to a current usage state of the heating furnace when the movable cover is in an open position; the control circuit is configured to enable the communication module when the current usage state of the furnace is an inactive state; Aerosol generator.

2. The aerosol generating device of claim 1 , wherein the control circuit is configured to disable the communication module when the movable cover is in a closed position.

3. The aerosol generating device according to claim 1 , wherein the current use state of the heating furnace includes a series of changes in the position of the movable cover.

4. 4. The aerosol generating device according to claim 1, wherein the movable cover is a sliding cover configured to move along a rail.

5. 5. The aerosol generating device of claim 1, wherein the furnace is configured to receive a consumable through the opening, the consumable being longer than the furnace so that the movable lid is in an open position when the aerosol-generating substrate is received in the furnace.

6. The aerosol generating device according to any one of claims 1 to 5, wherein the movable cover is biased to a closed position.

7. An aerosol generating device as described in any one of claims 1 to 6, wherein the control circuit is configured to control the furnace to be in one or more aerosol generation states, and the current usage state of the furnace includes the current aerosol generation state of the furnace.

8. The aerosol generating device according to any one of claims 1 to 7, further comprising a temperature sensor, and the current usage status of the furnace comprises an indication of the temperature measured by the temperature sensor.

9. An aerosol generating device according to any one of claims 1 to 8, wherein the communication module is configured to transmit a current state to the remote device, the current state being the current stage of an aerosol generating session.

10. 10. The aerosol generating device according to claim 1, wherein the communication module is configured to transmit usage data to the remote device.

11. 11. The aerosol generating device of claim 1, wherein the communication module is configured to receive instructions from the remote device, and the control circuit is configured to control the furnace based on the instructions.

12. 12. An aerosol generating device according to any preceding claim, wherein the control circuitry is configured to delay disabling the communication module until a communication session is completed.

13. 13. An aerosol generating device according to any preceding claim, further comprising a communication indicator operable to indicate whether the communication module is enabled or disabled.

14. A system comprising an aerosol generating device according to any one of claims 1 to 13 and a remote device, wherein the remote device is configured to run a software application for communicating with the aerosol generating device.

15. The system of claim 14 , wherein the communication module is a wireless communication module and the remote device is a user terminal.

16. a furnace configured to receive and heat the aerosol-generating substrate to generate the aerosol; a communication module configured to communicate with a remote device; 1. A method for controlling an aerosol generating device comprising: the heating furnace includes an opening and a movable cover for the opening, The method comprises: When the movable cover is in an open position, controlling the enabling and disabling of the communication module according to a current usage state of the heating furnace; enabling the communication module when the current usage state of the furnace is inactive; A method comprising:

17. 17. A storage medium storing computer program instructions that, when executed by a control circuit of an aerosol generating device, cause the control circuit to perform the method of claim 16.

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