WO2023223378A1 - Système de génération d'aérosol et procédé de commande - Google Patents

Système de génération d'aérosol et procédé de commande Download PDF

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Publication number
WO2023223378A1
WO2023223378A1 PCT/JP2022/020344 JP2022020344W WO2023223378A1 WO 2023223378 A1 WO2023223378 A1 WO 2023223378A1 JP 2022020344 W JP2022020344 W JP 2022020344W WO 2023223378 A1 WO2023223378 A1 WO 2023223378A1
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WIPO (PCT)
Prior art keywords
temperature
heating
unit
section
difference
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PCT/JP2022/020344
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English (en)
Japanese (ja)
Inventor
健太郎 山田
徹 長浜
Original Assignee
日本たばこ産業株式会社
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Application filed by 日本たばこ産業株式会社 filed Critical 日本たばこ産業株式会社
Priority to PCT/JP2022/020344 priority Critical patent/WO2023223378A1/fr
Publication of WO2023223378A1 publication Critical patent/WO2023223378A1/fr

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/57—Temperature control

Definitions

  • the present disclosure relates to an aerosol generation system and a control method.
  • a suction device generates an aerosol to which a flavor component has been added using a base material that includes an aerosol source for generating an aerosol, a flavor source for imparting a flavor component to the generated aerosol, and the like.
  • the user can enjoy the taste of smoking by inhaling the aerosol to which the flavor component is added, which is generated by the suction device.
  • the action of the user inhaling an aerosol will also be referred to below as a puff or a puff action.
  • Patent Document 1 listed below discloses that a component whose resistance changes with respect to temperature change is provided and used to control the temperature of the heated portion.
  • the present disclosure has been made in view of the above problems, and the purpose of the present disclosure is to provide a mechanism that can further improve the quality of user experience.
  • a power supply section a heating section that heats an aerosol source using electric power supplied from the power supply section, and a heating section that follows temperature changes of the heating section.
  • a temperature changing part whose temperature changes by changing the temperature, a first measured value measured as a parameter corresponding to the temperature of the heating part, and a second measured value measured as a parameter corresponding to the temperature of the temperature changing part.
  • An aerosol generation system comprising: a control section that controls the operation of the heating section based on the difference between the temperature of the heating section and the temperature of the temperature changing section.
  • the control unit may switch a parameter used as a basis for controlling power supply to the heating unit based on a difference between the temperature of the heating unit and the temperature of the temperature changing unit.
  • the control unit determines a parameter based on which the power supply to the heating unit is restarted after temporarily stopping the power supply to the heating unit, based on the difference between the temperature of the heating unit and the temperature of the temperature changing unit. You can also switch by
  • the control unit may restart power supply to the heating unit based on the second measured value when the difference between the temperature of the heating unit and the temperature of the temperature changing unit is within a first range. good.
  • the control section controls the elapsed time. Based on this, the power supply to the heating section may be restarted.
  • the control unit stops power supply to the heating unit or prohibits power supply to the heating unit when the difference between the temperature of the heating unit and the temperature of the temperature change unit exceeds the second range. You may perform at least one of the following.
  • the control unit determines the first range and the second range based on the difference between the temperature of the heating unit and the temperature of the temperature changing unit, which are obtained when heating by the heating unit is performed for the first time. may be set.
  • the aerosol generation system includes a storage unit that stores information, and the control unit controls the operation of the heating unit based on control information that defines a time series transition of a target temperature for heating the aerosol source. , acquiring a difference between the temperature of the heating section and the temperature of the temperature changing section during a sampling period that is a part of a period in which the time-series transition of the target value is defined by the control information, and storing it in the storage section.
  • the operation of the heating section may be controlled based on a difference between the temperature of the heating section and the temperature of the temperature changing section stored in the storage section.
  • the control unit acquires the difference between the temperature of the heating unit and the temperature of the temperature changing unit multiple times during the sampling period, and calculates a statistical value of the difference between the temperature of the plurality of heating units and the temperature of the temperature changing unit.
  • the period in which the time-series transition of the target value is defined by the control information includes a period in which the temperature of the heating section is temporarily lowered, and the control section is configured to
  • the sampling period may be a period after a period in which power supply to the heating section is stopped and the temperature of the heating section is lowered.
  • the control unit may set the sampling period based on the first measurement value when starting heating by the heating unit based on the control information.
  • the control unit sets the timing to start the sampling period earlier, as the temperature of the heating unit indicated by the first measurement value when starting heating by the heating unit based on the control information is higher. It's okay.
  • the heating section is a resistance heating element that generates heat when a current is applied
  • the first measurement value is an electrical resistance value of the resistance heating element
  • the temperature changing section changes electricity according to temperature changes.
  • the resistor may be a resistor whose resistance value changes
  • the second measurement value may be an electrical resistance value of the resistor.
  • the aerosol generation system may further include a base material containing the aerosol source.
  • a control method for controlling an aerosol generation system wherein the aerosol generation system includes a power supply unit and a power supply unit that is supplied from the power supply unit. a heating section that heats the aerosol source using the electric power generated by the heating section; and a temperature changing section that changes the temperature in accordance with the temperature change of the heating section, and the control method includes: The difference between the temperature of the heating part and the temperature of the temperature changing part, which is indicated by a first measured value measured as a value corresponding to the temperature of the temperature changing part and a second measured value measured as a value corresponding to the temperature of the temperature changing part. Based on the invention, a control method is provided, including controlling an operation of the heating section.
  • FIG. 2 is a schematic diagram schematically showing a configuration example of a suction device.
  • 2 is a graph showing an example of a change in temperature of a heating section when temperature control is performed based on the heating profile shown in Table 1.
  • FIG. 3 is a diagram for explaining an example of control details of the operation of the heating unit according to the present embodiment. It is a flowchart which shows an example of the flow of processing performed by the suction device concerning this embodiment.
  • a suction device is a device that produces a substance that is inhaled by a user.
  • the substance generated by the suction device is an aerosol.
  • the substance produced by the suction device may be a gas.
  • FIG. 1 is a schematic diagram schematically showing a configuration example of a suction device.
  • the suction device 100 according to the present configuration example includes a power supply section 111, a sensor section 112, a notification section 113, a storage section 114, a communication section 115, a control section 116, a heating section 121, a holding section 140, and A heat insulating section 144 is included.
  • the power supply unit 111 stores power. Then, the power supply unit 111 supplies power to each component of the suction device 100 based on control by the control unit 116.
  • the power supply unit 111 may be configured with a rechargeable battery such as a lithium ion secondary battery, for example.
  • the sensor unit 112 acquires various information regarding the suction device 100.
  • the sensor unit 112 includes a pressure sensor such as a condenser microphone, a flow rate sensor, a temperature sensor, etc., and acquires a value associated with suction by the user.
  • the sensor unit 112 is configured with an input device such as a button or a switch that receives information input from the user.
  • the sensor section 112 includes a thermistor 117 for detecting the temperature of the heating section 121 from outside the heating section 121.
  • the thermistor 117 is an example of a temperature changing section whose temperature changes following the temperature change of the heating section 121.
  • the thermistor 117 is disposed near the heating section 121, such as in close contact with the heating section 121, and its temperature changes due to heat transfer from the heating section 121.
  • the temperature of the thermistor 117 is then detected as the temperature of the heating section 121.
  • Thermistor 117 includes a resistor whose electrical resistance value changes according to temperature changes. Then, the temperature of the thermistor 117 is calculated based on the electrical resistance value of the resistor.
  • the thermistor 117 may be configured as, for example, a negative temperature coefficient (NTC) thermistor, a positive temperature coefficient (PTC) thermistor, or a critical temperature resistor (CTR) thermistor.
  • NTC negative temperature coefficient
  • PTC positive temperature coefficient
  • CTR critical temperature resistor
  • a temperature measuring resistor made of platinum or the like may be used as the temperature change section.
  • a resistance temperature detector may also be referred to as an RTD (Resistance Temperature Detector).
  • the notification unit 113 notifies the user of information.
  • the notification unit 113 includes, for example, a light emitting device that emits light, a display device that displays an image, a sound output device that outputs sound, a vibration device that vibrates, or the like.
  • the storage unit 114 stores various information for the operation of the suction device 100.
  • the storage unit 114 is configured by, for example, a nonvolatile storage medium such as a flash memory.
  • the communication unit 115 is a communication interface that can perform communication compliant with any wired or wireless communication standard.
  • a communication standard for example, a standard using Wi-Fi (registered trademark), Bluetooth (registered trademark), or LPWA (Low Power Wide Area) may be adopted.
  • the control unit 116 functions as an arithmetic processing device and a control device, and controls overall operations within the suction device 100 according to various programs.
  • the control unit 116 is realized by, for example, an electronic circuit such as a CPU (Central Processing Unit) and a microprocessor.
  • the holding part 140 has an internal space 141 and holds the stick-type base material 150 while accommodating a part of the stick-type base material 150 in the internal space 141.
  • the holding part 140 has an opening 142 that communicates the internal space 141 with the outside, and holds the stick-shaped base material 150 inserted into the internal space 141 through the opening 142.
  • the holding part 140 is a cylindrical body having an opening 142 and a bottom part 143 as the bottom surface, and defines a columnar internal space 141.
  • An air flow path that supplies air to the internal space 141 is connected to the holding portion 140 .
  • An air inflow hole which is an inlet of air to the air flow path, is arranged on a side surface of the suction device 100, for example.
  • An air outlet hole which is an outlet for air from the air flow path to the internal space 141, is arranged at the bottom 143, for example.
  • the stick-type base material 150 includes a base portion 151 and a mouthpiece portion 152.
  • Base portion 151 includes an aerosol source.
  • Aerosol sources are, for example, polyhydric alcohols such as glycerin and propylene glycol, and liquids such as water.
  • the aerosol source may include flavor components of tobacco or non-tobacco origin. If the suction device 100 is a medical inhaler, such as a nebulizer, the aerosol source may include a drug. Note that in this configuration example, the aerosol source is not limited to a liquid, and may be a solid.
  • the heating unit 121 atomizes the aerosol source to generate aerosol by heating the aerosol source.
  • the heating unit 121 uses the power supplied from the power supply unit 111 to heat the aerosol source.
  • the heating section 121 is configured as a resistance heating element that generates heat due to electrical resistance when a current is applied.
  • the heating section 121 is formed into a film shape and is arranged to cover the outer periphery of the holding section 140.
  • the heating part 121 generates heat
  • the base material part 151 of the stick-type base material 150 is heated from the outer periphery, and an aerosol is generated.
  • the heating unit 121 generates heat when supplied with power from the power supply unit 111 .
  • power may be supplied when the sensor unit 112 detects that the user has started suctioning and/or that predetermined information has been input. Then, when the sensor unit 112 detects that the user has finished suctioning and/or that predetermined information has been input, the power supply may be stopped.
  • the heat insulating section 144 prevents heat transfer from the heating section 121 to other components.
  • the heat insulating section 144 is made of a vacuum heat insulating material, an airgel heat insulating material, or the like.
  • suction device 100 has been described above.
  • the configuration of the suction device 100 is not limited to the above, and may take various configurations as exemplified below.
  • the heating unit 121 may be configured in a blade shape and arranged to protrude from the bottom 143 of the holding unit 140 into the internal space 141. In that case, the blade-shaped heating unit 121 is inserted into the base portion 151 of the stick-type base material 150 and heats the base portion 151 of the stick-type base material 150 from inside.
  • the heating part 121 may be arranged to cover the bottom part 143 of the holding part 140.
  • the heating section 121 is a combination of two or more of a first heating section that covers the outer periphery of the holding section 140 , a second heating section shaped like a blade, and a third heating section that covers the bottom 143 of the holding section 140 . It may be configured as
  • the holding part 140 may include an opening/closing mechanism such as a hinge that opens and closes a part of the outer shell that forms the internal space 141.
  • the holding part 140 may hold the stick-shaped base material 150 inserted into the internal space 141 by opening and closing the outer shell.
  • the heating unit 121 may be provided at the relevant clamping location in the holding unit 140 and may heat the stick-shaped base material 150 while pressing it.
  • the stick-type base material 150 is an example of a base material that contains an aerosol source and contributes to the generation of aerosol.
  • the suction device 100 is an example of an aerosol generation device that generates an aerosol by heating a stick-type base material 150.
  • the combination of the suction device 100 and the stick-type base material 150 generates an aerosol. Therefore, the combination of the suction device 100 and the stick-type base material 150 may be regarded as an aerosol generation system.
  • the heating profile is control information for controlling the temperature at which the aerosol source is heated.
  • the heating profile may be control information for controlling the temperature of the heating section 121.
  • the heating profile may include a target value for the temperature at which the aerosol source is heated (hereinafter also referred to as target temperature).
  • target temperature may change according to the elapsed time from the start of heating, and in that case, the heating profile includes information that defines the time series transition of the target temperature.
  • the heating profile may include parameters (hereinafter also referred to as power supply parameters) that define a method of supplying power to the heating unit 121.
  • the power supply parameters include, for example, the voltage applied to the heating unit 121, ON/OFF of power supply to the heating unit 121, the feedback control method to be adopted, and the like. Turning on/off the power supply to the heating unit 121 may be regarded as turning the heating unit 121 on/off.
  • the control unit 116 controls the operation of the heating unit 121 so that the temperature of the heating unit 121 (hereinafter also referred to as actual temperature) changes in the same manner as the target temperature defined in the heating profile.
  • the heating profile is typically designed to optimize the flavor experienced by the user when the user inhales the aerosol generated from the stick-shaped substrate 150. Therefore, by controlling the operation of the heating unit 121 based on the heating profile, the flavor that the user enjoys can be optimized.
  • Temperature control of the heating section 121 can be realized, for example, by known feedback control.
  • the feedback control may be, for example, PID control (Proportional-Integral-Differential Controller).
  • the control unit 116 can cause the power from the power supply unit 111 to be supplied to the heating unit 121 in the form of pulses using pulse width modulation (PWM) or pulse frequency modulation (PFM). In that case, the control unit 116 can control the temperature of the heating unit 121 by adjusting the duty ratio or frequency of the power pulse in feedback control. Alternatively, the control unit 116 may perform simple on/off control in feedback control.
  • control unit 116 causes the heating unit 121 to perform heating until the actual temperature reaches the target temperature, and when the actual temperature reaches the target temperature, interrupts the heating by the heating unit 121 so that the actual temperature is lower than the target temperature. When the temperature becomes low, heating by the heating unit 121 may be restarted.
  • the temperature of the heating section 121 can be quantified by measuring or estimating the electrical resistance value of the heating section 121 (more precisely, the resistance heating element that constitutes the heating section 121). This is because the electrical resistance value of the resistance heating element changes depending on the temperature.
  • the electrical resistance value of the resistance heating element can be estimated, for example, by measuring the amount of voltage drop across the resistance heating element.
  • the amount of voltage drop across the resistive heating element can be measured by a voltage sensor that measures the potential difference applied to the resistive heating element.
  • the electrical resistance value of the resistance heating element constituting the heating section 121 is an example of a first measured value measured as a value corresponding to the temperature of the heating section 121.
  • the temperature of the heating unit 121 calculated based on the first measured value is hereinafter also referred to as heater temperature.
  • the temperature of the heating section 121 can be quantified by measuring or estimating the electrical resistance value of the thermistor 117 (more precisely, the resistor that constitutes the thermistor 117). This is because the temperature of the thermistor 117 changes depending on the temperature change of the heating section 121, and the electric resistance value of the resistor forming the thermistor 117 changes depending on the temperature.
  • the electrical resistance value of the resistor can be estimated, for example, by measuring the amount of voltage drop across the resistor. The amount of voltage drop across the resistor can be measured by a voltage sensor that measures the potential difference applied to the resistor.
  • the electrical resistance value of the resistor constituting the thermistor 117 is an example of a second measurement value that is measured as a value corresponding to the temperature of the thermistor 117.
  • the temperature of the thermistor 117 calculated based on the second measurement value will also be referred to below as the thermistor temperature.
  • a heating session is a period during which the operation of the heating section 121 is controlled based on the heating profile.
  • the beginning of a heating session is the timing at which heating based on the heating profile is started.
  • the end of the heating session is when a sufficient amount of aerosol is no longer generated.
  • the heating session includes a preheating period and a puffable period following the preheating period.
  • the puffable period is a period during which a sufficient amount of aerosol is expected to be generated.
  • the preheating period is the period from when heating starts until the puffable period starts.
  • the heating performed during the preheating period is also referred to as preheating.
  • the heating profile may be divided into a plurality of periods, and a time-series transition of the target temperature and a time-series transition of the power supply parameters may be defined in each period.
  • the heating profile is divided into a total of eight periods, STEP0 to STEP7.
  • STEP a time-series transition of the target temperature and a time-series transition of the power supply parameter are defined.
  • STEP defined in the heating profile is an example of a unit period in this embodiment.
  • Time control may be implemented in each STEP.
  • Time control is control that terminates a STEP using the passage of a predetermined time (that is, the duration set for each STEP) as a trigger.
  • a predetermined time that is, the duration set for each STEP
  • the rate of change in the temperature of the heating unit 121 may be controlled so that the temperature of the heating unit 121 reaches the target temperature at the end of the duration.
  • heating is performed such that the temperature of the heating unit 121 reaches the target temperature in the middle of the duration time and then maintains the temperature of the heating unit 121 at the target temperature until the duration time elapses.
  • the temperature of section 121 may be controlled. In the example shown in Table 1 above, time control is performed in STEP 1 and STEP 4 to 7.
  • Time control may not be implemented in each STEP. If time control is not implemented, the STEP ends with the temperature of the heating section 121 reaching a predetermined temperature (that is, the target temperature set for each STEP) as a trigger. Therefore, the duration of STEP in which time control is not performed expands or contracts depending on the rate of temperature change. In the example shown in Table 1 above, time control is not performed in STEP 0, 2, and 3.
  • FIG. 2 is a graph showing an example of a change in temperature of the heating section 121 when temperature control is performed based on the heating profile shown in Table 1.
  • the horizontal axis of the graph 20 is time (seconds).
  • the vertical axis of the graph 20 is the temperature of the heating section 121.
  • a line 21 indicates the change in temperature of the heating section 121.
  • the temperature of the heating section 121 changes in the same way as the target temperature defined in the heating profile.
  • An example of a heating profile will be described below with reference to Table 1 and FIG. 2.
  • the temperature of the heating section 121 rises from the initial temperature to 300°C.
  • the initial temperature is the temperature of the heating section 121 at the start of heating.
  • time control is not performed. Therefore, STEP0 ends when the temperature of the heating section 121 reaches 300° C. as a trigger. In the example shown in FIG. 2, STEP0 ends in 20 seconds.
  • the temperature of the heating section 121 is maintained at 300°C.
  • the preheating period ends with the end of STEP 1, and the puffable period begins with the start of STEP 2.
  • the temperature of the heating section 121 be rapidly raised to 300° C. in STEP 0, and that the duration of STEP 1 be secured to some extent.
  • the temperature of the heating section 121 decreases to 220°C.
  • time control is not performed. Therefore, STEP 2 is terminated when the temperature of the heating section 121 reaches 220° C. as a trigger. In the example shown in FIG. 2, STEP 2 ends in 10 seconds.
  • the power supply to the heating section 121 is turned off. Therefore, it is possible to reduce the temperature of the heating section 121 at the fastest speed. In this way, by lowering the temperature of the heating section 121 in the middle of a heating session, rapid consumption of the aerosol source can be prevented. As a result, it is possible to prevent depletion of the aerosol source during the heating session.
  • STEP 3 the temperature of the heating section 121 rises to 230°C.
  • time control is not performed. Therefore, STEP 3 is terminated when the temperature of the heating section 121 reaches 230° C. as a trigger.
  • STEP3 ends in 5 seconds. In this way, by providing a period in which the temperature of the heating section 121 is lowered and then raised again, it is possible to prevent the temperature of the heating section 121 from excessively decreasing.
  • the temperature of the heating section 121 increases stepwise to 260°C. In this way, by gradually increasing the temperature of the heating section 121, it is possible to maintain the amount of aerosol generated and to suppress power consumption during the entire heating session.
  • the temperature of the heating section 121 decreases.
  • the power supply to the heating section 121 is turned off.
  • the duration is defined, the target temperature is not defined. Therefore, STEP7 ends using the end of the duration as a trigger.
  • a sufficient amount of aerosol can be generated by the residual heat of the stick-type base material 150. Therefore, in this example, the puffable period, that is, the heating session ends at the end of STEP7.
  • the notification unit 113 may notify the user of information indicating the timing at which preheating ends. For example, the notification unit 113 may notify information that foretells the end of preheating before the end of preheating, or may notify information indicating that preheating has ended at the timing when preheating has ended. The user may be notified by, for example, lighting an LED or vibrating. The user can refer to this notification and start puffing immediately after the end of preheating.
  • the notification unit 113 may notify the user of information indicating the timing at which the puffable period ends. For example, the notification unit 113 may notify information foretelling the end of the puffable period before the puffable period ends, or notify information indicating that the puffable period has ended at the timing when the puffable period has ended. or The user may be notified by, for example, lighting an LED or vibrating. The user is able to puff until the puffing period ends with reference to this notification.
  • the heating profile described above is just an example, and various other examples are possible.
  • the number of STEPs, the duration of each STEP, and the target temperature may be changed as appropriate.
  • the control unit 116 can control the operation of the heating unit 121 by comparing the heater temperature with the target temperature.
  • the control unit 116 can control the operation of the heating unit 121 by comparing the thermistor temperature and the target temperature.
  • the measurement accuracy of the electrical resistance value of the thermistor 117 may deteriorate.
  • One example of the cause is deterioration of the thermistor 117 over time. In that case, it becomes difficult to appropriately control the operation of the heating section 121 during a period in which the operation of the heating section 121 is controlled based on the thermistor temperature as in STEP2.
  • the thermistor temperature can be used for a protective function such as stopping heating by the heating unit 121 when thermal runaway, which is a phenomenon in which the temperature of the heating unit 121 rises excessively, occurs. If the measurement accuracy of the electrical resistance value of the thermistor 117 deteriorates, it may become difficult to properly apply the protection function. In this manner, deterioration in the measurement accuracy of the electrical resistance value of the thermistor 117 may cause deterioration in the quality of the user experience.
  • a mechanism is provided to prevent the quality of the user experience from deteriorating due to the deterioration of the measurement accuracy of the electrical resistance value of the thermistor 117.
  • Operation control of heating section 121> (1) Control based on the difference between heater temperature and thermistor temperature
  • the control unit 116 performs heating based on the difference between the heater temperature and thermistor temperature indicated by the electrical resistance value of the heating section 121 and the electrical resistance value of the thermistor 117.
  • the operation of the unit 121 is controlled. Specifically, first, the control unit 116 calculates the heater temperature based on the electrical resistance value of the heating unit 121 and calculates the thermistor temperature based on the electrical resistance value of the thermistor 117. Next, the control unit 116 determines deterioration in the measurement accuracy of the electrical resistance value of the thermistor 117 based on the difference between the heater temperature and the thermistor temperature.
  • control unit 116 controls the operation of the heating unit 121 according to the degree of deterioration in the measurement accuracy of the electrical resistance value of the thermistor 117. According to this configuration, it is possible to prevent the quality of the user experience from deteriorating due to deterioration in the accuracy of measuring the electrical resistance value of the thermistor 117.
  • the control unit 116 may switch the parameter used as the basis for controlling the power supply to the heating unit 121 based on the difference between the heater temperature and the thermistor temperature. According to this configuration, it is possible to control the operation of the heating section 121 based on appropriate parameters.
  • the control unit 116 switches the parameter used as the basis for restarting the power supply to the heating unit 121 after temporarily stopping the power supply to the heating unit 121, based on the difference between the heater temperature and the thermistor temperature. Good too.
  • the heating session includes a period during which the temperature of the heating unit 121 is temporarily lowered, as in STEP 2. Then, the control unit 116 stops power supply to the heating unit 121 during a period in which the temperature of the heating unit 121 is temporarily lowered. After that, the control unit 116 restarts power supply to the heating unit 121.
  • control unit 116 restarts power supply to the heating unit 121 at a timing based on a parameter selected based on the difference between the heater temperature and the thermistor temperature. According to this configuration, it becomes possible to appropriately control the temperature drop of the heating section 121.
  • FIG. 3 is a diagram for explaining an example of the control content of the operation of the heating section 121 according to the present embodiment.
  • the vertical axis represents the difference between the heater temperature and the thermistor temperature
  • the control contents according to the difference between the heater temperature and the thermistor temperature are written along the vertical axis.
  • the control unit 116 may restart power supply to the heating unit 121 based on the thermistor temperature.
  • the first range is set as a range in which the heater temperature and the thermistor temperature may be considered to be the same if the difference between the heater temperature and the thermistor temperature is included in the first range.
  • the first range is a range of ⁇ 3°C.
  • the control unit 116 uses the thermistor temperature as a trigger to decrease to the target temperature at the end of STEP 2 specified in the heating profile, and controls the heating unit Restart power supply to 121. According to this configuration, even during a period where it is difficult to obtain the heater temperature as in STEP 2, by referring to the thermistor temperature instead, it is possible to make the temperature of the heating section 121 change as specified in the heating profile. Become.
  • the control unit 116 controls the difference based on the elapsed time.
  • the power supply to the heating unit 121 may be restarted.
  • the second range is set as a range in which it is assumed that problems such as thermal runaway will not occur if the difference between the heater temperature and the thermistor temperature is included in the second range.
  • the second range is a range of ⁇ 10°C.
  • the control unit 116 triggers the heating unit 121 when a predetermined time has elapsed since STEP 2 was started. Resume power supply to.
  • the predetermined time can be defined in the heating profile. Alternatively, the predetermined time may be calculated based on the range of decrease in the target temperature in STEP2. According to this configuration, even if there is an error between the heater temperature and the thermistor temperature and it is difficult to control based on the thermistor temperature, the heating section can be adjusted within a range that does not significantly deviate from the target temperature specified in the heating profile. It becomes possible to change the temperature of 121.
  • the control unit 116 prohibits power supply to the heating unit 121 or stops power supply to the heating unit 121.
  • Stopping the power supply to the heating unit 121 is a concept that refers to stopping the power supply to the heating unit 121 during execution.
  • Prohibiting power supply to heating unit 121 is a concept that includes not executing power supply to heating unit 121 in addition to stopping power supply to heating unit 121 . According to this configuration, even if the protection function does not work well due to deterioration in the measurement accuracy of the electrical resistance value of the thermistor 117, it is possible to prevent problems such as thermal runaway from occurring.
  • the control unit 116 acquires the difference between the heater temperature and the thermistor temperature during a sampling period, which is a part of the heating session, and stores it in the storage unit 114. It's okay. Then, the control unit 116 may control the operation of the heating unit 121 based on the difference between the heater temperature and the thermistor temperature stored in the storage unit 114. Typically, the control unit 116 uses the difference between the heater temperature and thermistor temperature acquired in a certain heating session to control the operation of the heating unit 121 in the next heating session and thereafter.
  • control unit 116 acquires the difference between the heater temperature and the thermistor temperature by setting a sampling period once in a plurality of heating sessions, and calculates the difference between the acquired heater temperature and thermistor temperature in subsequent heating sessions. It may also be used in According to this configuration, it is possible to reduce the processing load on the suction device 100. Of course, the difference between the heater temperature and thermistor temperature obtained in a certain heating session may be used to control the operation of the heating unit 121 in the same heating session.
  • the control unit 116 may obtain the difference between the heater temperature and the thermistor temperature multiple times during the sampling period, and store the statistical values of the differences between the multiple heater temperatures and the thermistor temperature in the storage unit 114.
  • the control unit 116 may control the operation of the heating unit 121 based on the statistical value of the difference between the heater temperature and the thermistor temperature stored in the storage unit 114.
  • Statistics can be calculated by various statistical techniques, such as an average, a weighted average, or a median. According to this configuration, it becomes possible to more accurately determine the deterioration in the measurement accuracy of the electrical resistance value of the thermistor 117.
  • the sampling period be a period after the period in which the temperature of the heating section 121 is temporarily lowered.
  • the sampling period is preferably the period after STEP 3.
  • the heater temperature is rapidly increasing or has just risen rapidly, so a large difference naturally occurs between the heater temperature and the thermistor temperature. This is because the thermistor temperature follows the heater temperature but increases with a delay. That is, the difference between the heater temperature and the thermistor temperature in STEP 0 and STEP 1 is the sum of the value caused by the deterioration in measurement accuracy of the electrical resistance value of the thermistor 117 and the value caused by the delay in the temperature rise of the thermistor temperature. .
  • the thermistor temperature is considered to have risen sufficiently until it asymptotically approaches the heater temperature. That is, the difference between the heater temperature and the thermistor temperature after STEP 3 does not include the value caused by the delay in the temperature rise of the thermistor temperature, but only includes the value caused by the deterioration in the measurement accuracy of the electrical resistance value of the thermistor 117. It seems to be converging. Therefore, with this configuration, it is possible to more accurately determine the deterioration in the measurement accuracy of the electrical resistance value of the thermistor 117.
  • so-called chain smoking may be performed, in which the stick-shaped base material 150 is heated multiple times while being replaced at short intervals.
  • the initial temperature of the heating unit 121 during the second and subsequent heating is higher than the initial temperature of the heating unit 121 during the first heating. The higher the initial temperature, the earlier the timing at which the difference between the heater temperature and thermistor temperature converges.
  • the control unit 116 may set the sampling period based on the initial temperature of the heating unit 121. In particular, the control unit 116 may set the timing to start the sampling period earlier as the initial temperature of the heating unit 121 is higher.
  • the initial temperature of the heating section 121 the heater temperature at the time of starting heating, that is, when the heating section 121 starts heating based on the heating profile may be used. For example, if the heater temperature at the start of heating is less than a predetermined threshold, the control unit 116 may set STEP 5 and STEP 6 as the sampling period. On the other hand, if the heater temperature at the start of heating is equal to or higher than a predetermined threshold, the control unit 116 may set STEP 3 to STEP 6 as the sampling period.
  • the control unit 116 may set the sampling period based on the heater temperature at the start of heating, or instead, based on other information affected by the presence or absence of chain smoke. As an example, the control unit 116 may set the sampling period based on the thermistor temperature at the start of heating. In that case, the control unit 116 may set the timing at which the sampling period starts earlier as the thermistor temperature at the start of heating is higher. As another example, the control unit 116 may set the sampling period based on the elapsed time from the previous execution of heating based on the heating profile until the current execution. In that case, the control unit 116 may set the timing at which the sampling period starts earlier as the elapsed time from the previous execution of heating based on the heating profile to the current execution is shorter. In either configuration, when chain smoke is performed and the difference between the heater temperature and the thermistor temperature converges quickly, a long sampling period can be ensured, making it possible to accurately determine the deterioration of the thermistor 117.
  • the control unit 116 sets the first range and the second range based on the difference between the heater temperature and thermistor temperature obtained when heating by the heating unit 121 is performed for the first time. You may. For example, the control unit 116 sets a range of ⁇ 3° C. as a first range, which is the reference for the difference between the heater temperature and thermistor temperature obtained when heating by the heating unit 121 is performed for the first time, and A range of 10°C is set as the second range.
  • the first time heating by the heating unit 121 is performed refers to, for example, the timing when heating is performed for the first time after the suction device 100 is shipped and purchased.
  • the difference between the heater temperature and the thermistor temperature obtained when heating by the heating section 121 is performed for the first time corresponds to the individual difference between the heating section 121 or the thermistor 117. According to this configuration, it is possible to absorb individual differences between the heating section 121 or the thermistor 117 and appropriately control the operation of the heating section 121.
  • Another option for absorbing individual differences in the heating section 121 or thermistor 117 is to make sure that the heater temperature and thermistor temperature match or that the difference between the heater temperature and thermistor temperature falls within a predetermined range before shipment from the factory.
  • the method for calculating the heater temperature or thermistor temperature may be calibrated to include the above.
  • Calibrating the heater temperature calculation method refers to setting a correspondence between the electrical resistance value of the heating section 121 and the heater temperature calculated from the electrical resistance value.
  • Calibrating the thermistor temperature calculation method refers to setting a correspondence between the electrical resistance value of the thermistor 117 and the thermistor temperature calculated from the electrical resistance value.
  • the heater temperature is adjusted so that the heater temperature and the thermistor temperature match or the difference between the heater temperature and the thermistor temperature is within a predetermined range.
  • the temperature or thermistor temperature calculation method is calibrated. Calibration may be performed for multiple target temperatures defined in the heating profile.
  • FIG. 4 is a flowchart illustrating an example of the flow of processing executed by the suction device 100 according to the present embodiment.
  • the control unit 116 obtains a user operation instructing to start heating (step S102).
  • a user operation to instruct the start of heating is an operation on the suction device 100, such as operating a switch provided on the suction device 100.
  • Another example of a user operation to instruct the start of heating is to insert the stick-shaped base material 150 into the suction device 100.
  • control unit 116 determines whether the difference between the heater temperature and thermistor temperature acquired in the previous heating session is included in the second range (step S104). For example, the control unit 116 makes this determination by referring to the difference between the heater temperature and the thermistor temperature acquired in the previous heating session, which is stored in the storage unit 114.
  • step S104 If it is determined that the difference between the heater temperature and thermistor temperature acquired in the previous heating session is not included in the second range (step S104: NO), the control unit 116 prohibits heating (step S108). . That is, the control unit 116 ends the process without supplying power to the heating unit 121.
  • step S104 YES
  • the control unit 116 starts heating. That is, the control unit 116 starts supplying power to the heating unit 121.
  • control unit 116 obtains the initial temperature of the heating unit 121 (step S110). For example, the control unit 116 acquires the heater temperature at the time when power supply to the heating unit 121 is started.
  • control unit 116 sets a sampling period based on the initial temperature of the heating unit 121 (step S112).
  • control unit 116 determines whether to temporarily turn off the heating (step S114). For example, when STEP 2 in the heating profile shown in Table 1 starts, the control unit 116 determines to temporarily stop the power supply to the heating unit 121 and temporarily turn off the heating.
  • step S114 If it is determined that the heating is not to be temporarily turned off (step S114: NO), the process proceeds to step S126.
  • step S114 If it is determined that the heating should be temporarily turned off (step S114: YES), the control unit 116 stops power supply to the heating unit 121 and turns off the heating (step S116).
  • control unit 116 determines whether the difference between the heater temperature and the thermistor temperature acquired in the previous heating session is included in the first range (step S118). For example, the control unit 116 makes this determination by referring to the difference between the heater temperature and the thermistor temperature acquired in the previous heating session, which is stored in the storage unit 114.
  • step S118 If it is determined that the difference between the heater temperature and thermistor temperature acquired in the previous heating session is within the first range (step S118: YES), the control unit 116 restarts heating based on the thermistor temperature. (Step S120). For example, when heating is temporarily turned off in STEP 2, STEP 2 is terminated and power supply to the heating unit 121 is restarted using the thermistor temperature falling to the target temperature set at the end of STEP 2 as a trigger. After that, the process proceeds to step S124.
  • step S118 If it is determined that the difference between the heater temperature and thermistor temperature acquired in the previous heating session is not included in the first range (step S118: NO), the control unit 116 restarts heating based on the passage of time. (Step S122). For example, when the elapsed time after heating is temporarily turned off in STEP 2 reaches a predetermined time, as a trigger, STEP 2 is ended and power supply to the heating unit 121 is restarted. After that, the process proceeds to step S124.
  • step S124 the control unit 116 acquires the difference between the heater temperature and the thermistor temperature during the sampling period, and stores it in the storage unit 114 (step S124).
  • control unit 116 determines whether the termination condition is satisfied (step S126).
  • An example of the termination condition is that the duration of STEP 7 has elapsed.
  • Another example of the termination condition is that the number of puffs since the start of heating has reached a predetermined number.
  • step S126 NO
  • the process returns to step S114.
  • step S126 YES
  • the control unit 116 terminates the heating based on the heating profile (step S128). The process then ends.
  • the heating profile includes the target value of the temperature of the heating section 121, but the present disclosure is not limited to such an example.
  • the heating profile only needs to include target values of parameters corresponding to the temperature of the heating section 121.
  • Parameters corresponding to the temperature of the heating section 121 include the electrical resistance value of the heating section 121 or the electrical resistance value of the thermistor 117.
  • the heating section 121 is configured as a resistance heating element and generates heat by electric resistance, but the present disclosure is not limited to such an example.
  • the heating unit 121 may include an electromagnetic induction source such as a coil that generates a magnetic field, and a susceptor that generates heat by induction heating, and the stick-shaped base material 150 may be heated by the susceptor.
  • the control unit 116 applies an alternating current to the electromagnetic induction source to generate an alternating magnetic field, and causes the alternating magnetic field to enter the susceptor, thereby causing the susceptor to generate heat.
  • a susceptor that generates heat by induction heating may be provided in the suction device 100.
  • the temperature at which the aerosol source is heated which is controlled based on the heating profile, will be the temperature of the susceptor.
  • the temperature of the susceptor can be estimated based on the electrical resistance value of the electromagnetic induction source.
  • each device described in this specification may be realized using software, hardware, or a combination of software and hardware.
  • a program constituting the software is stored in advance, for example, in a recording medium (specifically, a computer-readable non-temporary storage medium) provided inside or outside each device.
  • each program is read into the RAM when executed by a computer that controls each device described in this specification, and is executed by a processing circuit such as a CPU.
  • the recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, a flash memory, or the like.
  • the above computer program may be distributed, for example, via a network, without using a recording medium.
  • the above-mentioned computer may be an application-specific integrated circuit such as an ASIC, a general-purpose processor that executes functions by loading a software program, or a computer on a server used for cloud computing. Furthermore, a series of processes performed by each device described in this specification may be distributed and processed by multiple computers.
  • (1) power supply section a heating section that heats the aerosol source using the electric power supplied from the power supply section; a temperature changing part whose temperature changes in accordance with the temperature change of the heating part; the temperature of the heating section and the a control unit that controls the operation of the heating unit based on the difference from the temperature of the temperature change unit;
  • An aerosol generation system comprising: (2) The control unit switches a parameter used as a basis for controlling power supply to the heating unit based on a difference between a temperature of the heating unit and a temperature of the temperature changing unit.
  • the control unit determines a parameter based on which the power supply to the heating unit is restarted after temporarily stopping the power supply to the heating unit, based on the difference between the temperature of the heating unit and the temperature of the temperature changing unit. to switch, The aerosol generation system according to (2) above.
  • the control unit restarts power supply to the heating unit based on the second measurement value when the difference between the temperature of the heating unit and the temperature of the temperature changing unit is within a first range.
  • (5) When the difference between the temperature of the heating section and the temperature of the temperature changing section exceeds the first range and is included in a second range wider than the first range, the control section controls the elapsed time.
  • the control unit stops power supply to the heating unit or prohibits power supply to the heating unit when the difference between the temperature of the heating unit and the temperature of the temperature change unit exceeds the second range. do at least one of the following things, The aerosol generation system according to (5) above.
  • the control unit determines the first range and the second range based on the difference between the temperature of the heating unit and the temperature of the temperature changing unit, which are obtained when heating by the heating unit is performed for the first time. set, The aerosol generation system according to (5) or (6) above.
  • the aerosol generation system includes a storage unit that stores information
  • the control unit includes: controlling the operation of the heating unit based on control information that defines a time-series transition of a target temperature value for heating the aerosol source; acquiring a difference between the temperature of the heating section and the temperature of the temperature changing section during a sampling period that is part of a period in which the time-series transition of the target value is defined by the control information, and storing it in the storage section; controlling the operation of the heating unit based on the difference between the temperature of the heating unit and the temperature of the temperature changing unit stored in the storage unit;
  • the aerosol generation system according to any one of (1) to (7) above.
  • the control unit acquires the difference between the temperature of the heating unit and the temperature of the temperature changing unit multiple times during the sampling period, and calculates a statistical value of the difference between the temperature of the plurality of heating units and the temperature of the temperature changing unit. is stored in the storage unit, controlling the operation of the heating unit based on the statistical value of the difference between the temperature of the heating unit and the temperature of the temperature changing unit stored in the storage unit;
  • the aerosol generation system according to (8) above.
  • the period in which the time-series transition of the target value is defined by the control information includes a period in the middle of which the temperature of the heating section is temporarily lowered,
  • the control unit stops power supply to the heating unit during a period in which the temperature of the heating unit is lowered,
  • the sampling period is a period after a period in which the temperature of the heating section is lowered,
  • the aerosol generation system according to (8) or (9) above.
  • the control unit sets the sampling period based on the first measurement value when starting heating by the heating unit based on the control information.
  • the aerosol generation system according to (10) above.
  • the control unit sets the timing to start the sampling period earlier as the temperature of the heating unit indicated by the first measurement value when starting heating by the heating unit based on the control information is higher.
  • the aerosol generation system according to (11) above.
  • the heating part is a resistance heating element that generates heat when a current is applied,
  • the first measurement value is an electrical resistance value of the resistance heating element,
  • the temperature change part is a resistor whose electrical resistance value changes according to temperature change,
  • the second measured value is the electrical resistance value of the resistor,
  • the aerosol generation system according to any one of (1) to (12) above.
  • the aerosol generation system further includes a base material containing the aerosol source.
  • the aerosol generation system according to any one of (1) to (13) above.
  • a control method for controlling an aerosol generation system comprising: The aerosol generation system includes: power supply section, a heating section that heats the aerosol source using the electric power supplied from the power supply section; a temperature changing part whose temperature changes in accordance with the temperature change of the heating part; Equipped with The control method includes: The temperature of the heating section and the temperature of the heating section indicated by a first measurement value measured as a value corresponding to the temperature of the heating section and a second measurement value measured as a value corresponding to the temperature of the temperature changing section. controlling the operation of the heating section based on the difference from the temperature of the temperature changing section; including control methods.
  • suction device 111 power supply portion 112 sensor portion 113 notification portion 114 memory portion 115 communication portion 115 Communication portion 116 control unit 117 thermistor 1410140 Interior space 1411142 ⁇ 143 bottom opening 142 bottom 144 squirrel portion 150 Stock type substrate 151 Department

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  • Control Of Temperature (AREA)

Abstract

Le problème à résoudre par la présente invention est de fournir un mécanisme capable d'améliorer davantage la qualité de l'expérience utilisateur. À cet effet, la solution proposée par l'invention concerne un système de génération d'aérosol comprenant : une unité de source d'alimentation ; une unité de chauffage qui chauffe une source d'aérosol en utilisant l'énergie fournie par l'unité de source d'alimentation ; une unité de changement de température qui change la température en suivant un changement de température de l'unité de chauffage ; et une unité de commande qui commande le fonctionnement de l'unité de chauffage sur la base de la différence entre la température de l'unité de chauffage et la température de l'unité de changement de température, la différence entre celles-ci étant indiquée par une première valeur mesurée mesurée en tant que paramètre correspondant à la température de l'unité de chauffage et une seconde valeur mesurée mesurée en tant que paramètre correspondant à la température de l'unité de changement de température.
PCT/JP2022/020344 2022-05-16 2022-05-16 Système de génération d'aérosol et procédé de commande WO2023223378A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3357359A2 (fr) * 2017-05-10 2018-08-08 Shenzhen First Union Technology Co., Ltd. Cigarette électronique de chauffage par induction électromagnétique apte à étalonner la température
JP2020195298A (ja) * 2019-05-31 2020-12-10 日本たばこ産業株式会社 エアロゾル吸引器、エアロゾル吸引器用の制御装置、エアロゾル吸引器の制御方法及びプログラム
JP2021510504A (ja) * 2018-01-12 2021-04-30 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 複数のセンサーを備えるエアロゾル発生装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3357359A2 (fr) * 2017-05-10 2018-08-08 Shenzhen First Union Technology Co., Ltd. Cigarette électronique de chauffage par induction électromagnétique apte à étalonner la température
JP2021510504A (ja) * 2018-01-12 2021-04-30 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 複数のセンサーを備えるエアロゾル発生装置
JP2020195298A (ja) * 2019-05-31 2020-12-10 日本たばこ産業株式会社 エアロゾル吸引器、エアロゾル吸引器用の制御装置、エアロゾル吸引器の制御方法及びプログラム

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