Classifications

• • 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
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
• • 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
• • 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
  • A24F40/10—Devices using liquid inhalable precursors
• • 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
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
  • A24F40/46—Shape or structure of electric heating means
• • 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
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
  • A24F40/46—Shape or structure of electric heating means
  • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
• • 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
• • 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
  • A24F40/51—Arrangement of sensors
• • 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
  • A24F40/85—Maintenance, e.g. cleaning
• • 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
  • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
• • 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
  • A24F40/20—Devices using solid inhalable precursors

Definitions

• This application relates to the field of electronic atomization technologies, and in particular, to an aerosol generating device and a control method therefor.
• tobaccos are burnt to generate tobacco vapor. Attempts have been made to provide substitutes for these tobacco-burning objects by producing products that release compounds without burning.
• An example of such products is a heat-not-burn product, also referred to a tobacco heating product or a tobacco heating apparatus.
• the product or apparatus releases compounds by heating materials rather than burning materials.
• the materials may be tobaccos or other non-tobacco products or combinations, for example, a blended mixture that may contain or not contain nicotine.
• An aspect of this application provides a control method for an aerosol generating device.
• the aerosol generating device includes a heater configured to heat an aerosol forming substrate to generate an aerosol and a power source providing energy to the heater.
• the method includes:
• an aerosol generating device including:
• an aerosol generating article 20 includes a filter segment 21 and a substrate segment 22.
• the substrate segment 22 includes an aerosol forming substrate.
• the aerosol forming substrate is a substrate that can release volatile compounds forming aerosols, and the volatile compounds can be released by heating the aerosol forming substrate.
• the aerosol forming substrate may be a solid aerosol forming substrate.
• the solid aerosol forming substrate may include solid and liquid components.
• the aerosol forming substrate may include a tobacco-containing material, which contains volatile tobacco-flavor compounds that are released from the aerosol-forming substrate when the aerosol-forming substrate is heated.
• the aerosol forming substrate may include a non-tobacco material.
• the aerosol forming substrate may further include an aerosol forming substance.
• An example of an appropriate aerosol forming substance is glycerin and propanediol.
• the filter segment 21 may be a cellulose acetate filter.
• a flavoring liquid may be sprayed on the filter segment 21 to provide a flavor or separate fiber coated with a flavoring liquid may be inserted into the filter segment 21, thereby enhancing the persistence of the taste conveyed to the user.
• the filter segment 21 may be further provided with a spherical or cylindrical capsule. The capsule may hold a core containing a flavorant.
• the aerosol generating article 20 may further include a cooling segment 23 that is disposed between the substrate segment 22 and the filter segment 21 and configured to cool the aerosol generated when the substrate segment 22 is heated, to allow the user to inhale the aerosol that is cooled to an optimal temperature.
• FIG. 2 is a schematic structural diagram of an aerosol generating device according to an embodiment of this application.
• the aerosol generating device 10 includes a battery cell 101, a controller 102, and a heater 103.
• the aerosol generating device 10 is provided with an internal space defined by a housing.
• the aerosol generating article 20 may be inserted into the internal space of the aerosol generating device 10.
• the battery cell 101 i.e., a power source, is configured to provide electric power for operating the aerosol generating device 10.
• the battery cell 101 may provide electric power to heat the heater 103, and may provide electric power required for operating the controller 102.
• the battery cell 101 may provide electric power required for operating a display device, a sensor, a motor, and the like provided in the aerosol generating device 10.
• the battery cell 101 may be, but is not limited to, a lithium iron phosphate (LiFePO 4 ) battery.
• the battery cell 101 may be alternatively a lithium cobaltate (LiCoO 2 ) battery or a lithium titanate battery.
• the battery cell 101 may be alternatively a rechargeable battery or a disposable battery.
• the aerosol generating device 10 may heat the heater 103.
• the heater 103 enables the temperature of the aerosol forming substrate in the aerosol generating article 20 to generate an aerosol.
• the generated aerosol is transferred to the user through the filter segment 21 of the aerosol generating article 20 for vaping.
• the heater 103 and the aerosol forming substrate may use various heating coupling configurations.
• the heater 103 may use a center-heating type.
• the heater 103 has configurations such as a needle, a sheet, and a pin, and is inserted inside the aerosol forming substrate to enable a periphery of the heater 103 be in contact with or in immediate proximity to (as close as practicable to) the aerosol forming substrate, thereby implementing the transfer of heat.
• the heater 103 may use a peripheral-heating type.
• the heater 103 is usually a hollow cylinder, and the aerosol forming substrate is disposed inside the hollow cylinder of the heater 103 to enable an inner wall of the heater 103 to be in contact with or in immediate proximity to (as close as practicable to) a circumference of the aerosol forming substrate, thereby implementing the transfer of heat.
• the heater 103 may use various heating manners.
• the aerosol forming substrate is heated in one or more manners of resistive heating, electromagnetic induction, chemical reaction, infrared radiation, resonance, photoelectric conversion, photothermal conversion, and air heating.
• the controller 102 may control the operation of main components in the aerosol generating device 10. Specifically, the controller 102 may control the operation of the battery cell 101 and the heater 103, and may further control the operation of other components in the aerosol generating device 10.
• the controller 102 is further configured to perform a control method for the aerosol generating device 10.
• the controller 102 includes at least one processor.
• the controller 102 may include a logic gate array, or may include a combination of a general-purpose microprocessor and a memory that stores programs executable in the microprocessor.
• the controller 102 controls the operation of the heater 103.
• the controller 102 may control an amount of electric power provided to the heater 103, a period of continuously providing electric power to the heater 103, and stop providing power to the heater 103.
• the controller 102 may further monitor the status (e.g., the remaining battery capacity of the battery cell 101) of the battery cell 101, and/or monitor the operating status (e.g., a resistance change of the heater 103) of the heater 103, and may generate a notification signal if necessary to notify the user.
• the number of times (e.g., once or twice) that the user presses the input apparatus or the time (e.g., 0.1 seconds or 0.2 seconds) for which the user presses the input apparatus is adjusted to perform a desired function among multiple functions of the aerosol generating device 10.
• the user may use the input apparatus to perform the function of heating by the heater 103, the function of adjusting the temperature of the heater 103, the function of cleaning the space for inserting the aerosol generating article 20, the function of checking whether the aerosol generating device 10 is operable, the function of displaying the remaining battery capacity (available electric power) of the battery cell 101, or the function of resetting the aerosol generating device 10.
• the functions of the aerosol generating device 10 are not limited thereto.
• the aerosol generating device 10 further includes the voltage regulation circuit coupled between the heater 103 and the battery cell 101.
• the voltage regulation circuit includes a boost circuit and/or a buck circuit, for example, a BUCK-BOOST converter circuit shown in FIG. 5 . It should be understood that the voltage regulation circuit is not limited to a BUCK-BOOST converter circuit, and may be alternatively at least one of a BOOST converter circuit, a BUCK converter circuit, a CUK converter circuit, a ZETA converter circuit, and a SEPIC converter circuit.
• FIG. 3 is a flowchart of a control method for an aerosol generating device according to an embodiment of this application. As shown in FIG. 3 , the controller 102 is configured to perform a control method for the aerosol generating device 10. The method includes the following steps.
• Step S11 After a heating initiation instruction is received, enter a preheating operational stage.
• the heat retention stage may be divided into a plurality of power output stages (intermittent outputs) for energy supply, thereby compensating for the heat loss of the heater 103.
• the controller 102 outputs power to the heater 103 and maintains the output for a particular period (a power supply period). In this case, the temperature of the heater 103 slightly rises (less than 3°C), for example, t 21-1 in FIG. 9 .
• the controller 102 stops the power output.
• power output of a next power output stage is initiated.
• a power supply period of each power output stage is greater than or equal to 500 milliseconds (ms), and preferably, greater than 1 s, or the frequency is less than or equal to 2 Hz, and is different from PWM output control (the frequency is approximately 100 Hz), which is a high-frequency output.
• the real-time temperature of the heater 103 may be detected within the natural cooldown period, and when it is detected that the real-time temperature of the heater 103 reaches a set low temperature threshold, a next second power output stage is initiated.
• duration of the natural cooldown period is quantified, and when the duration of the natural cooldown period meets a preset time threshold, a next power output stage is initiated.
• the reliance on the real-time temperature of the heater 103 is reduced, and it is only necessary to monitor the real-time temperature to ensure that the real-time temperature does not exceed the low-temperature threshold to implement control, and in the second manner, control can be implemented without monitoring the real-time temperature of the heater 103, thereby avoiding the impact on the precision of the temperature sensor.
• the temperature of the heater 103 fluctuates.
• the output is intermittent outputs.
• a heater 103 with thick-film resistive heating in a circumferential configuration is used as an example. Because a thick-film resistive heater has characteristics of quick heat-up and weak heat retention performance, in the heat retention stage, the controller 102 sequentially initiates 3 to 5 power output stages. For each power output stage, output power is approximately 6 W, a power supply period is approximately 1 s (which may change based on real-time power), and a natural cooldown period is approximately 3 s.
• a heater 103 with infrared heating in a circumferential configuration is used as an example. Because an infrared heater has characteristics of slow heat-up and good heat retention performance, in the heat retention stage, the controller 102 sequentially initiates 3 to 5 power output stages. For each power output stage, output power is approximately 6 W, a power supply period is approximately 1 s, and a natural cooldown period approximately ranges from 5 s to 8 s.
• Step S21 After a heating initiation instruction is received, enter a preheating operational stage.
• Step S22 Provide power during the continuous output stage to significantly raise the temperature of the heater 103, where output power in the continuous output stage is decreased at least once
• the continuous output stage includes the heat-up stage and the heat transfer sustaining stage described above.
• the purpose of the output power of the continuous output stage is to enable the heater 103 to significantly rise from the initial temperature to the target maximum temperature threshold, for example, rise from 25°C in a cold state to more than 260°C.
• the "significantly" here may be understood as a temperature difference exceeding 100°C, preferably, exceeding 200°C.
• the maximum temperature threshold approximately ranges from 260°C to 270°C.
• the continuous output of power facilitates as quick heat-up as possible of the heater 103.
• a resistive circumferential heater 103 can implement significant heat-up within 10 s.
• an infrared circumferential heater 103 can implement the foregoing significant heat-up within 17 s.
• a high-power output further needs to be switched to a low-power output, and the output is an uninterrupted output.
• This facilitates maintenance of the heat transfer rate between the heater 103 and the aerosol forming substrate, so that the aerosol forming substrate can use this the heat transfer rate to absorb heat more quickly.
• duration of the low-power output approximately ranges from 2 s to 3 s.

Landscapes

• Control Of Resistance Heating (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=91144574

Family Applications (1)

Country Status (3)

Family Cites Families (10)

• 2022
  • 2022-11-25 CN CN202211488305.2A patent/CN118077961A/zh active Pending
• 2023
  • 2023-11-20 WO PCT/CN2023/132646 patent/WO2024109693A1/zh not_active Ceased
  • 2023-11-20 EP EP23893783.3A patent/EP4623735A1/de active Pending

Also Published As

Similar Documents

Legal Events