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WO2025004266A1 - Dispositif de génération d'aérosol - Google Patents

Dispositif de génération d'aérosol Download PDF

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Publication number
WO2025004266A1
WO2025004266A1 PCT/JP2023/024181 JP2023024181W WO2025004266A1 WO 2025004266 A1 WO2025004266 A1 WO 2025004266A1 JP 2023024181 W JP2023024181 W JP 2023024181W WO 2025004266 A1 WO2025004266 A1 WO 2025004266A1
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WO
WIPO (PCT)
Prior art keywords
power supply
unit
temperature sensor
heating
aerosol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2023/024181
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English (en)
Japanese (ja)
Inventor
達也 青山
純司 湊
智弥 内堀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Priority to PCT/JP2023/024181 priority Critical patent/WO2025004266A1/fr
Priority to TW112138332A priority patent/TW202500037A/zh
Publication of WO2025004266A1 publication Critical patent/WO2025004266A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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

Definitions

  • This disclosure relates to an aerosol generating device.
  • the aerosol generating device which is a portable electronic device, is equipped with various electronic components, such as a microcontroller unit (MCU), memory, an analog-to-digital (AD) conversion circuit, a sensor, a heater, and a light emitting diode (LED).
  • MCU microcontroller unit
  • AD analog-to-digital
  • LED light emitting diode
  • the power supply potentials required for the operation of electronic components are not necessarily the same.
  • the power supply potential required by a processor is different from that required by a memory, an AD conversion circuit, a sensor, a heater, and an LED.
  • a circuit configuration is adopted in which electronic components having the same power supply potential are connected to the same power supply line.
  • a memory and an AD conversion circuit are connected to the same power supply line.
  • the potential of the power supply line here is used as the operating power supply for the memory and as the reference voltage for the AD conversion circuit.
  • the operation of the memory may cause the potential of the power supply line to fluctuate. This fluctuation in the potential of the power supply line is propagated to the AD conversion circuit connected to the same power supply line, causing a decrease in the conversion accuracy of the AD conversion circuit.
  • this disclosure provides a technology that prevents the conversion accuracy of an AD conversion circuit from being affected even when a memory that is supplied with the same power supply potential as the AD conversion circuit is in operation.
  • an aerosol generating device has a heating unit that heats an aerosol source, a memory that records an operation log, a first constant voltage circuit that generates an operating power supply for the memory, a temperature sensor that measures a temperature change at a measurement site associated with heating of the heating unit, an AD conversion circuit that converts the output voltage of the temperature sensor into digital data, a second constant voltage circuit that generates a reference voltage to be supplied to the AD conversion circuit, and a control unit that stops heating of the heating unit when the output voltage of the temperature sensor exceeds a threshold value, and in which the potential of the operating power supply for the memory and the potential of the reference voltage are the same.
  • the temperature sensor may operate using the reference voltage as its operating power source.
  • the temperature sensor may have a nonlinear temperature characteristic.
  • the temperature sensor may also measure the temperature on the surface of the housing or around the heating section.
  • the aerosol source may be a solid.
  • the aerosol source may be a liquid.
  • the conversion accuracy of the AD conversion circuit is not affected.
  • FIG. 2 is a view of the front side of the aerosol generation device observed from diagonally above.
  • FIG. 2 is a view of the front side of the aerosol generation device observed from diagonally below.
  • FIG. 2 is a front view of the main unit with the front panel removed.
  • FIG. 2 is a diagram illustrating an internal configuration of a main unit device.
  • FIG. 2 is a diagram illustrating an electronic circuit used in the first embodiment.
  • 2 is a diagram illustrating the internal configuration of an MCU and the connection relationship with peripheral circuits.
  • the aerosol generation device is a form of electronic cigarette.
  • the substance generated by the aerosol generating device is called an aerosol.
  • An aerosol is a mixture of air or other gas and minute liquid or solid particles suspended in gas.
  • an aerosol generating device that generates an aerosol without combustion will be described. Inhalation of the aerosol generated by the aerosol generating device is also called a "puff.”
  • an aerosol generating device to which a solid aerosol source can be attached will be described.
  • the container for storing the solid aerosol source is called a "capsule” or a "stick-type substrate” depending on the product form. Capsules and stick-type substrates are consumables. For this reason, a replacement guideline is set for the capsule and stick-type substrate.
  • FIG. 1 is a diagram of the front side of the aerosol generation device 1 observed from obliquely above.
  • FIG. 2 is a view of the front side of the aerosol generation device 1 observed from obliquely below.
  • FIG. 3 is a front view of the main unit 20 with the front panel 10 removed.
  • the aerosol generation device 1 used in this embodiment has a size that allows a user to hold it in one hand.
  • the aerosol generating device 1 has a main body device 20, a front panel 10 attached to the front of the main body device 20, and a shutter 30 arranged on the top surface of the main body device 20 and capable of sliding along the top surface.
  • the front panel 10 is a member that can be attached to and detached from the main body device 20. The front panel 10 is attached and detached by a user.
  • the front panel 10 attached to the main unit 20 covers the front portion of the main unit 20, as shown in Figures 1 and 2.
  • the main unit 20 can be observed from the outside except for the front portion.
  • the side, back, top, and bottom surfaces of the main unit 20 can be observed from the outside even after the front panel 10 is attached.
  • a window 10A is provided in the front panel 10.
  • the window 10A is provided in a position facing a light-emitting element on the main unit 20 side.
  • eight LEDs 20A are provided in the main unit 20.
  • the window 10A in the first embodiment is made of a material that transmits light, although the window 10A may be a slit that penetrates from the front surface to the back surface.
  • the front panel 10 also has a role of buffering the transmission of heat emitted from the main unit 20. In the case of the present embodiment, only when the front panel 10 is attached to the main unit 20, generation of aerosol is permitted.
  • the front panel 10 used in this embodiment is deformed when the user presses a position below the window 10A with the fingertip, and returns to its original shape when the user stops pressing. This deformation makes it possible to operate the power button 20B provided on the main unit 20 while the front panel 10 is attached to the main unit 20.
  • a type C USB (Universal Serial Bus) connector 21 is provided on the bottom side of the main device 20.
  • the shape and type of the USB connector 21 are merely examples.
  • the USB connector 21 is used to charge the power supply unit 201 (see FIG. 4) built into the main device 20.
  • Either the magnet on the front panel 10 side or the magnet 20C on the main unit 20 side may be a piece of iron or other magnetic metal.
  • the attachment of the front panel 10 to the main unit 20 is detected by a Hall IC provided on the main unit 20 side.
  • various electronic components necessary for generating aerosol are built into the main device 20.
  • the device configuration in which the front panel 10 is attached to the main device 20 is referred to as the aerosol generating device 1, but in the narrow sense, the main device 20 is referred to as the aerosol generating device.
  • the main body device 20 is composed of a power supply unit 201 , a sensor unit 202 , a notification unit 203 , a memory unit 204 , a communication unit 205 , a control unit 206 , a heating unit 207 , a heat insulation unit 208 , and a holding unit 209 .
  • 4 shows a state in which the stick-shaped substrate 40 is held by the holding portion 209. In this state, the user inhales the aerosol.
  • the power supply unit 201 is a unit that supplies power to each component.
  • the power supply unit 201 uses a secondary battery to store the power required by the main unit 20.
  • a lithium ion secondary battery is used as the secondary battery.
  • the secondary battery can be charged from an external power source.
  • the external power source is supplied via a USB connector 21 (see FIG. 2).
  • the power supplied from the secondary battery is referred to as "VBAT”, and the power supplied via the USB connector 21 is referred to as "VBUS”.
  • the power supply VBUS is a 5V power supply.
  • the 5V power supply can also be generated from VBAT.
  • the sensor unit 202 is an electronic component that detects various types of information related to the main device 20 .
  • the sensor unit 202 includes, for example, a pressure sensor such as a microphone condenser and a flow rate sensor.
  • the sensor unit 202 outputs detected information to the control unit 206. For example, when detecting a change in air pressure or air flow associated with inhalation, the sensor unit 202 outputs a numerical value indicating the inhalation of aerosol by the user to the control unit 206.
  • the sensor unit 202 is provided in association with, for example, a button or switch used to receive an operation from a user.
  • the button in this case is the power button 20B (see FIG. 3) described above.
  • the switch is the shutter 30 (see FIG. 1) described above.
  • the sensor unit 202 has a temperature sensor that detects the temperature of the heating unit 207.
  • the temperature sensor detects the temperature of the heating unit 207 based on, for example, changes in the electrical resistance value of the conductive track of the heating unit 207.
  • the temperature sensor outputs a voltage corresponding to the current electrical resistance value.
  • the control unit 206 calculates the temperature of the heating unit 207 from the output voltage of the temperature sensor. This temperature sensor is used for the purpose of changing the temperature of the heating unit 207 in accordance with the heating profile.
  • Other temperature sensors include a temperature sensor that detects the ambient temperature of the heating unit 207, and a temperature sensor that detects the temperature near the surface of the main unit 20. These two temperature sensors are used from the perspective of detecting unexpected temperature increases. In other words, the temperature sensor here is provided from the perspective of safety.
  • the notification unit 203 is an electronic component that notifies the user of various information related to the main device 20.
  • the notification unit 203 includes, for example, an LED 20A (see FIG. 3).
  • the light emission and blinking of the LED 20A is controlled in a pattern according to the content of the notification. If multiple LEDs 20A with different light emission colors are provided, the light emission and blinking may be combined with different light emission colors. For example, red may be used to notify the user that use has been suspended or that repairs are required, and white, green, blue, etc. may be used to notify the user of normal use.
  • the storage unit 204 is an electronic component that stores various information related to the operation of the main device 20.
  • the storage unit 204 is configured by a non-volatile semiconductor storage medium such as a flash memory.
  • the information stored in the storage unit 204 includes, for example, an OS (Operating System), FW (FirmWare), and other programs.
  • the information stored in the storage unit 204 includes, for example, information related to the control of electronic components.
  • the information related to the control includes information related to suction by the user, such as the number of suctions, the suction time, and the cumulative suction time. This information is also called an operation log.
  • the control unit 206 is realized by electronic circuits such as a CPU (Central Processing Unit), an MCU (Micro Controller Unit), an MPU (Micro Processing Unit), a GPU (Graphical Processing Unit), an ASIC (application specific integrated circuit), an FPGA (Field Programmable Gate Array), or a DSP (Digital Signal Processor).
  • the control unit 206 may include a ROM (Read Only Memory) that stores programs, calculation parameters, etc., and a RAM (Random Access Memory) that temporarily stores parameters that change as appropriate.
  • the control unit 206 executes various processes and controls through the execution of programs.
  • the processing and control here include, for example, power supply by power supply unit 201, charging of power supply unit 201, detection of information by sensor unit 202, notification of information using notification unit 203, writing of information to memory unit 204 or reading of information from memory unit 204, and sending and receiving of information using communication unit 205.
  • the control unit 206 also controls the input of information to the electronic components and processing based on information output from the electronic components.
  • the holding portion 209 is a generally cylindrical container.
  • the internal space 209A is generally columnar.
  • the holding portion 209 here corresponds to a hole exposed by sliding the shutter 30.
  • the holding part 209 is provided with an opening 209B that connects the internal space 209A to the outside.
  • the stick-shaped substrate 40 is inserted into the internal space 209A from this opening 209B.
  • the stick-shaped substrate 40 is inserted until its tip hits the bottom 209C. Only a portion of the stick-shaped substrate 40 is accommodated in the internal space 209A.
  • the stick-shaped substrate 40 is said to be held in the internal space 209A.
  • the holding portion 209 is formed so that the inner diameter of at least a portion of the holding portion 209 in the axial direction is smaller than the outer diameter of the stick-shaped substrate 40 . For this reason, the outer peripheral surface of the stick-shaped substrate 40 inserted into the internal space 209A is subjected to pressure from the inner wall of the holding part 209. Due to this pressure, the stick-shaped substrate 40 is deformed and is held in the internal space 209A.
  • the holder 209 also has the function of defining an air flow path that passes through the stick-shaped substrate 40.
  • An air inlet hole which is an air inlet to the flow path, is disposed, for example, in the bottom 209C. Note that the opening 209B corresponds to an air outlet hole, which is an air outlet.
  • the portion of stick-shaped substrate 40 held by holding portion 209 is referred to as substrate portion 40A, and the portion protruding from the housing is referred to as suction mouth portion 40B.
  • the aerosol source is a substance that is atomized by heating to generate an aerosol. Aerosol sources include tobacco cuts, processed products made from tobacco raw materials in the form of granules, sheets, or powder, and other tobacco-derived substances.
  • the aerosol source may include non-tobacco derived substances made from plants other than tobacco, such as mints, herbs, etc.
  • the aerosol source may include flavoring ingredients such as menthol.
  • the aerosol source may contain a medicine for the patient to inhale.
  • the aerosol source is not limited to a solid, and may be, for example, a polyhydric alcohol such as glycerin or propylene glycol, or a liquid such as water.
  • At least a portion of the suction mouth portion 40B is held in the user's mouth when inhaling.
  • the air that flows in passes through the internal space 209A and the base portion 40A and reaches the user's mouth.
  • the air that reaches the user's mouth contains aerosol generated in the base portion 40A.
  • the heating unit 207 is composed of a heater or other heat generating element.
  • the heating unit 207 is composed of any material such as metal, polyimide, etc.
  • the heating unit 207 is, for example, in the form of a film, and is attached to the outer circumferential surface of the holding unit 209.
  • the aerosol source contained in the stick-shaped substrate 40 is heated and atomized by the heat generated by the heating unit 207.
  • the atomized aerosol source is mixed with air or the like to generate an aerosol.
  • the vicinity of the periphery of the stick-shaped substrate 40 is heated first, and the heated range gradually moves toward the center.
  • the heating unit 207 generates heat when power is supplied from the power supply unit 201.
  • the predetermined operation by the user here includes an operation on the shutter 30 (see FIG. 1) or the power button 20B (see FIG. 3).
  • the user can inhale the aerosol.
  • the change in the target temperature over time from the start of heating to the end of heating is stored in the storage unit 204 as a heating profile.
  • the heating profile is an example of a control sequence.
  • the inhalation of the aerosol by the user is detected by a flow rate sensor or the like of the sensor unit 202 and stored in the storage unit 204.
  • power supply to the heating unit 207 is stopped.
  • the predetermined operation is, for example, removal of the stick-shaped substrate 40.
  • a coil that inductively heats the metal piece is placed around the holding unit 209.
  • a susceptor may be placed on the outer periphery of the stick-shaped substrate 40 in the main device 20, and a coil that is an electromagnetic induction source may be wound around the outer periphery.
  • the heat insulating section 208 is a member that reduces the propagation of heat generated in the heating section 207 to the surroundings. For this reason, the heat insulating section 208 is disposed so as to cover at least the outer circumferential surface of the heating section 207.
  • the heat insulating section 208 is composed of, for example, a vacuum heat insulating material, an aerogel heat insulating material, etc.
  • the vacuum heat insulating material is a heat insulating material in which, for example, glass wool and silica (silicon powder) are wrapped in a resin film and placed in a high vacuum state, thereby reducing the thermal conduction of gas to as close to zero as possible.
  • Fig. 5 is a diagram showing a schematic diagram of an electronic circuit used in the first embodiment.
  • Fig. 5 shows the connection relationship between representative components.
  • wiring used for supplying power hereinafter referred to as “power supply lines” is shown by thick lines, and wiring used for control, etc. (hereinafter referred to as “signal lines”) is shown by thin lines.
  • the electronic circuit shown in FIG. 5 is composed of a charging IC 211, a step-up/step-down DC/DC circuit 212, an MCU 213, a step-up DC/DC circuit 214, a heater switch 215A, a resistance measurement switch 215B, a heater unit 216, an operational amplifier 217, a fuel gauge IC 218, an LDO (Low Dropout) constant voltage circuit 219, a flash memory 220, a heater temperature sensor 221, a case temperature sensor 222, and an LED 20A.
  • the charging IC 211 is an electronic circuit that switches the power supply path. For example, when a USB cable is connected to the USB connector 21 (see FIG. 2), the charging IC 211 connects the power supply VBUS to the step-up/step-down DC/DC circuit 212 and the power supply VBAT. On the other hand, when the USB cable is not connected to the USB connector 21 , the charging IC 211 connects the power supply VBAT to the step-up/step-down DC/DC circuit 212 .
  • the charging IC 211 detects whether or not a USB cable is connected to the USB connector 21, and switches the power supply path depending on the detection result.
  • the step-up/step-down DC/DC circuit 212 is a circuit that converts the voltage derived from the power supply VBUS supplied from the charging IC 211 or the power supply VBAT into a system power supply Vsys of a constant voltage.
  • the system power supply Vsys is 3.3V.
  • the system power supply Vsys is supplied to the MCU 213 , a fuel gauge IC 218 , and an LDO constant voltage circuit 219 .
  • the step-up/step-down DC/DC circuit 212 when a power supply VBAT is supplied, the step-up/step-down DC/DC circuit 212 generates the system power supply Vsys by stepping up or stepping down the power supply VBAT.
  • the power supply VBAT fluctuates depending on the remaining capacity and degree of deterioration of the secondary battery, but is converted to a constant voltage by the step-up/step-down DC/DC circuit 212.
  • a voltage derived from the power supply VBUS i.e., a 5V power supply
  • the step-up/step-down DC/DC circuit 212 steps down the supplied voltage to generate the system power supply Vsys.
  • the MCU 213 is an example of the control unit 206 (see FIG. 4) that controls the operation of each part constituting the aerosol generating device 1 (see FIG. 1), and is operated by the system power supply Vsys.
  • the MCU 213 is composed of a plurality of electronic components, such as an AD conversion circuit that converts an analog signal input from an input terminal into digital data, an LDO constant voltage circuit that generates various power sources, and a field effect transistor (FET) that controls the operation of an external element (e.g., the LED 20A).
  • an AD conversion circuit that converts an analog signal input from an input terminal into digital data
  • an LDO constant voltage circuit that generates various power sources
  • FET field effect transistor
  • the MCU 213 has a function of detecting the temperature using the case temperature sensor 222 before the heater unit 216 starts heating the stick-shaped substrate 40 (see FIG. 4), and if the detected temperature exceeds a threshold value, not starting heating of the stick-shaped substrate 40 by the heater unit 216.
  • the step-up DC/DC circuit 214 is a circuit that converts the power supply VBAT supplied from the secondary battery into a constant voltage boost power supply Vboost.
  • the boost power supply Vboost has a higher potential than the system power supply. For example, it is 5V. In the case of FIG. 5, in order to distribute the load, the 5V power supply supplied to the LED 20A and the boost power supply Vboost supplied to the heater unit 216 are wired separately.
  • the heater switch 215A is a switch that controls the application of the boost power supply Vboost to the heater unit 216, and is configured by, for example, an FET.
  • PWM Pulse Width Modulation
  • the temperature of heater unit 216 is controlled to match the heating profile.
  • the heating profile is data that gives a target temperature according to an elapsed time, and is stored in the storage unit 204 (see FIG. 4).
  • the opening and closing control of the heater switch 215A may be started upon detection of a predetermined user input, for example, an input from the power button 20B (see FIG. 3).
  • the resistance value measuring switch 215B is a switch that is controlled to be open when detecting the resistance value of the heater unit 216 and is controlled to be closed when the resistance value is not being detected, and is configured, for example, by a FET.
  • the opening and closing of the resistance value measuring switch 215B is also controlled by the MCU 213.
  • the resistance value measuring switch 215B is closed when the heater switch 215A is open.
  • the boost power supply Vboost is applied to the operational amplifier 217.
  • a resistor R is connected in series to the heater unit 216.
  • the heater unit 216 is an example of a heating section 207 that generates heat when energized and heats the stick-shaped substrate 40 inserted in the holding section 209 .
  • the resistance value of the heater unit 216 changes depending on the temperature of the heater unit 216. For example, the resistance value of the heater unit 216 increases with an increase in temperature. As a result, the higher the temperature of the heater unit 216, the higher the potential of the voltage Vheat.
  • the operational amplifier 217 is a circuit that detects the resistance value of the heater unit 216.
  • the operational amplifier 217 uses the boost power supply Vboost as an operating power supply.
  • the supply of the boost power supply Vboost to the operational amplifier 217 is limited to the timing at which the voltage Vheat corresponding to the resistance value of the heater unit 216 is detected.
  • the operational amplifier 217 outputs to the MCU 213 a voltage corresponding to the voltage Vheat input to the non-inverting input terminal.
  • the fuel gauge IC218 is an electronic component that operates using the system power supply Vsys as its operating power supply, and calculates and stores the secondary battery's SOH (State of Health), SOC (State of Charge), full charge capacity, and remaining capacity by monitoring the power supply VBAT.
  • the fuel gauge IC218 notifies the MCU213 of information such as the calculated SOH via I2C communication.
  • the heater temperature sensor 221 is a temperature sensor that measures the temperature around the heater unit 216.
  • the heater temperature sensor 221 is provided for the purpose of detecting abnormal heat generation. In other words, it is provided from the viewpoint of safety.
  • a thermistor is used as the heater temperature sensor 221.
  • a thermistor is a temperature sensor whose resistance value changes greatly with temperature change.
  • a thermistor is an example of a temperature sensor having a non-linear temperature characteristic.
  • the potential of the power supply voltage supplied to the heater temperature sensor 221 is the same as the power supply voltage supplied to the flash memory 220. Note that the potential of the power supply voltage supplied to the flash memory 220 and the potential of the power supply voltage supplied to the heater temperature sensor 221 do not need to be 1.8 V, and they do not need to be the same.
  • An output voltage representing the temperature of the measurement site is provided from the heater temperature sensor 221 to the MCU 213 .
  • the case temperature sensor 222 is a temperature sensor that measures the temperature near the surface of the main unit 20.
  • the case temperature sensor 222 is also provided for the purpose of detecting abnormal heat generation. In other words, it is provided from the perspective of safety.
  • a thermistor is used as the case temperature sensor 222 .
  • the potential of the power supply voltage supplied to the case temperature sensor 222 is the same as the power supply voltage supplied to the flash memory 220. Note that the potential of the power supply voltage supplied to the flash memory 220 and the potential of the power supply voltage supplied to the case temperature sensor 222 do not need to be 1.8 V, and do not need to be the same.
  • An output voltage representative of the temperature at the measurement site is provided from the case temperature sensor 222 to the MCU 213 .
  • FIG. 6 is a diagram for explaining the internal configuration of the MCU 213 and the connection relationship with the peripheral circuits. 6 is drawn from the perspective of electronic components connected to the power supply line, and needless to say, the MCU 213 includes various electronic components that are not shown in FIG.
  • a CPU is built in.
  • the CPU here generates control signals for, for example, a heater switch 215A (see FIG. 5) and a resistance value measurement switch 215B (see FIG. 5).
  • the MCU 213 is also provided with a switch (for example, a FET) that controls the turning on and off of the LED 20A (see FIG. 5).
  • the LDO constant voltage circuit 234 and the LDO constant voltage circuit 236 may be shared.
  • the LDO constant voltage circuits 231, 234, and 236 are circuits that generate constant voltages
  • the sigma-delta (SD) type ADCs 232 and 233 and the general purpose (GP) type ADCs 235 and 237 are circuits that generate data necessary for the above-mentioned CPU processing.
  • the general purpose (GP) type ADCs 235 and 237 are, for example, successive approximation type or pipeline type ADCs.
  • the heater temperature sensor 221 and the case temperature sensor 222 are temperature sensors used from the viewpoint of safety. For this reason, high conversion accuracy is required for the AD conversion circuit that converts the output voltage from this type of temperature sensor into digital data.
  • SD-type ADCs 232 and 233 with high conversion accuracy are used for converting the output voltages Vin1 and Vin2 of the heater temperature sensor 221 and the case temperature sensor 222.
  • the SD-type ADCs 232 and 233 here are an example of an AD conversion circuit that converts the output voltages of the temperature sensors into digital data.
  • the measurement of the temperature of the heater unit 216 is performed for the purpose of heating control based on a heating profile, and therefore real-time conversion of the output voltage representing the resistance value that changes according to the temperature of the heater unit 216 is required.
  • the GP type ADC 235 having a high conversion speed is used for converting the output voltage of the operational amplifier 217 .
  • a GP type ADC 237 having a larger fluctuation range of the input voltage compared to the SD type ADC 232 and the like is used to convert the potential appearing at the cc terminal of the USB cable.
  • the LDO constant voltage circuit 231 is a power supply circuit that generates 1.8 V power from the system power supply Vsys. In this embodiment, the 1.8 V power generated by the LDO constant voltage circuit 231 is supplied only to the flash memory 220. In other words, the LDO constant voltage circuit 231 is a power supply circuit dedicated to the flash memory 220. In FIG. 6, the LDO constant voltage circuit 231 is built into the MCU 213 , but it may be provided outside the MCU 213 .
  • signal lines used by the MCU 213 to write digital data to the flash memory 220 and read digital data from the flash memory 220 are indicated by bidirectional arrows.
  • the LDO constant voltage circuit 231 here is an example of a first constant voltage circuit.
  • the LDO constant voltage circuit 219 is also a power supply circuit that generates a 1.8 V power supply from the system power supply Vsys.
  • the LDO constant voltage circuit 219 is an example of a second constant voltage circuit.
  • the 1.8 V power supply generated by the LDO constant voltage circuit 219 is provided to a heater temperature sensor 221 , a case temperature sensor 222 , and SD-type ADCs 232 and 233 via a power supply line different from that of the LDO constant voltage circuit 231 .
  • the power supply line used to supply 1.8V power to the LDO constant voltage circuit 231 and the power supply line used to supply 1.8V power to the LDO constant voltage circuit 219 are different. For this reason, even if the potential of the 1.8V power supply that supplies drive power to the flash memory 220 fluctuates as the flash memory 220 operates, the fluctuations will not be propagated to the potential of the 1.8V power supply supplied by the LDO constant voltage circuit 219. Thus, even if the flash memory 220 operates, the conversion accuracy of the SD-type ADC 232 and the SD-type ADC 233 will not decrease.
  • the 1.8V power supply generated by the LDO constant voltage circuit 219 is provided to the heater temperature sensor 221 and the SD-type ADC 232 through a common power supply line.
  • the 1.8V power supply is provided to the heater temperature sensor 221 as an operating power supply, and to the SD-type ADC 232 as a reference voltage Vref1.
  • the conversion output of the SD ADC 232 is output to a CPU (not shown).
  • the conversion output of the SD ADC 233 is also output to a CPU (not shown).
  • the SD-type ADCs 232 and 233 are given as an example of an electronic circuit that provides a constant voltage circuit separate from the constant voltage circuit that supplies operating power to the flash memory 220 even when the constant voltage circuit operates at the same potential as the flash memory 220.
  • this type of electronic circuit is not limited to the SD-type ADCs 232 and 233.
  • this type of electronic circuit may include an AD conversion circuit (not shown) that is used to measure the temperature around the secondary battery.
  • SD-type ADCs 232 and 233 which have high conversion accuracy, are used as AD conversion circuits that provide a constant voltage circuit separate from the constant voltage circuit that supplies operating power to the flash memory 220 even when the constant voltage circuit operates at the same potential as the flash memory 220.
  • GP-type ADCs 235 and 237 which have high conversion speeds, may also be used.
  • the aerosol source is described as being solid, but the aerosol source may be liquid.
  • the aerosol source is liquid, a method is adopted in which the aerosol source is guided to a thin tube called a wick by capillary action, and the aerosol source is evaporated by heating a coil wound around the wick.
  • the heating of the aerosol source is linked to the inhalation of the user.
  • an aerosol generating device that generates an aerosol by heating a solid aerosol source has been described.
  • an aerosol generating device that generates an aerosol by separately heating a solid aerosol source and a liquid aerosol source may also be used.
  • This type of aerosol generating device is also called a hybrid aerosol generating device.
  • An aerosol generating device having a heating unit that heats an aerosol source, a memory that records an operation log, a first constant voltage circuit that generates an operating power supply for the memory, a temperature sensor that measures a temperature change at a measurement site due to heating of the heating unit, an AD conversion circuit that converts the output voltage of the temperature sensor into digital data, a second constant voltage circuit that generates a reference voltage to be supplied to the AD conversion circuit, and a control unit that stops heating of the heating unit when the output voltage of the temperature sensor exceeds a threshold value, wherein the potential of the operating power supply for the memory and the potential of the reference voltage are the same.
  • 1...aerosol generating device 10...front panel, 10A...window, 20...main body device, 20A...LED, 20B...power button, 20C...magnet, 21...USB connector, 30...shutter, 40...stick-shaped substrate, 40A...substrate portion, 40B...suction port portion, 201...power supply portion, 202...sensor portion, 203...notification portion, 204...memory portion, 205...communication portion, 206...control portion, 207...heating portion, 208...insulation portion, 209...holding portion part, 209A... internal space, 209B... opening, 209C... bottom, 212... step-up/step-down DC/DC circuit, 213... MCU, 214...
  • step-up DC/DC circuit 215A... heater switch, 215B... resistance value measurement switch, 216... heater unit, 217... operational amplifier, 219, 231, 234, 236... LDO constant voltage circuit, 220... flash memory, 221... heater temperature sensor, 222... case temperature sensor

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Ce dispositif de génération d'aérosol comprend une unité de chauffage pour chauffer une source d'aérosol, une mémoire pour enregistrer un journal de fonctionnement, un premier circuit à tension constante pour générer une alimentation électrique de fonctionnement pour la mémoire, un capteur de température pour mesurer un changement de température d'un site de mesure accompagnant le chauffage effectué par l'unité de chauffage, un circuit de conversion A/N pour convertir une tension de sortie du capteur de température en données numériques, un second circuit à tension constante pour générer une tension de référence à fournir au circuit de conversion A/N, et une unité de commande pour arrêter le chauffage effectué par l'unité de chauffage lorsque la tension de sortie du capteur de température dépasse une valeur seuil. Le potentiel de l'alimentation électrique de fonctionnement pour la mémoire et le potentiel de la tension de référence sont les mêmes.
PCT/JP2023/024181 2023-06-29 2023-06-29 Dispositif de génération d'aérosol Pending WO2025004266A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2023/024181 WO2025004266A1 (fr) 2023-06-29 2023-06-29 Dispositif de génération d'aérosol
TW112138332A TW202500037A (zh) 2023-06-29 2023-10-05 霧氣生成裝置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/024181 WO2025004266A1 (fr) 2023-06-29 2023-06-29 Dispositif de génération d'aérosol

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WO2025004266A1 true WO2025004266A1 (fr) 2025-01-02

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017127300A (ja) * 2016-01-14 2017-07-27 清水　和彦 無煙喫煙具
JP2017194392A (ja) * 2016-04-21 2017-10-26 京セラドキュメントソリューションズ株式会社 温度検出装置
WO2022239412A1 (fr) * 2021-05-10 2022-11-17 日本たばこ産業株式会社 Unité d'alimentation électrique pour dispositif de génération d'aérosol
WO2023089752A1 (fr) * 2021-11-19 2023-05-25 日本たばこ産業株式会社 Dispositif d'inhalation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017127300A (ja) * 2016-01-14 2017-07-27 清水　和彦 無煙喫煙具
JP2017194392A (ja) * 2016-04-21 2017-10-26 京セラドキュメントソリューションズ株式会社 温度検出装置
WO2022239412A1 (fr) * 2021-05-10 2022-11-17 日本たばこ産業株式会社 Unité d'alimentation électrique pour dispositif de génération d'aérosol
WO2023089752A1 (fr) * 2021-11-19 2023-05-25 日本たばこ産業株式会社 Dispositif d'inhalation

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