WO2024095403A1 - Aspirateur d'aérosol - Google Patents

Aspirateur d'aérosol Download PDF

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Publication number
WO2024095403A1
WO2024095403A1 PCT/JP2022/041019 JP2022041019W WO2024095403A1 WO 2024095403 A1 WO2024095403 A1 WO 2024095403A1 JP 2022041019 W JP2022041019 W JP 2022041019W WO 2024095403 A1 WO2024095403 A1 WO 2024095403A1
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WO
WIPO (PCT)
Prior art keywords
aerosol
atomization
flow path
heating
generating liquid
Prior art date
Application number
PCT/JP2022/041019
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English (en)
Japanese (ja)
Inventor
豊 改發
拓矢 吉本
一郎 樋口
梨保 永井
Original Assignee
日本たばこ産業株式会社
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 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/JP2022/041019 priority Critical patent/WO2024095403A1/fr
Priority to PCT/JP2023/010449 priority patent/WO2024095507A1/fr
Publication of WO2024095403A1 publication Critical patent/WO2024095403A1/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
    • A24F40/05—Devices without heating means

Definitions

  • This disclosure relates to an aerosol inhaler.
  • Aerosol inhalers are known that can inhale aerosols generated by atomizing an aerosol generating liquid containing a flavor source using an atomization unit (see, for example, Patent Documents 1 to 3, etc.).
  • the particle size of the droplets contained in the generated aerosol is relatively large. If an aerosol with large droplet size is inhaled by a user, it may cause choking or other problems.
  • This disclosure was made in consideration of the above-mentioned circumstances, and aims to provide a technology that reduces the risk of choking when inhaling aerosol in an aerosol inhaler equipped with a non-heated atomization unit.
  • the aerosol inhaler of the present disclosure for solving the above problems includes a storage section for storing an aerosol generating liquid containing a flavor source, a non-heated atomization unit for generating an aerosol by atomizing the aerosol generating liquid without heating, an aerosol flow path for circulating the aerosol generated by the non-heated atomization unit toward the mouthpiece of the aerosol inhaler, and an atomization device for reducing the particle size of droplets contained in the aerosol flowing through the aerosol flow path.
  • the particle diameter of the droplets contained in the aerosol generated by the non-heated atomization unit is large, the particle diameter of the droplets can be reduced by the atomization device as the aerosol flows through the aerosol flow path. Therefore, the mist particle diameter of the aerosol inhaled by the user through the mouthpiece can be reduced, and choking can be prevented when inhaling the aerosol.
  • the atomization device may reduce the size of droplets contained in the aerosol to 2 ⁇ m or less.
  • the atomization device may be a heater that heats the aerosol flowing through the aerosol flow path.
  • the heater may be set to a heating temperature of 170° C. or higher when heating the aerosol flowing through the aerosol flow path.
  • the upper limit of the heating temperature of the heater may be set to 250° C. or lower.
  • the atomization device may be disposed adjacent to the downstream of the ultrasonic atomization unit.
  • the non-heating atomization unit may have an atomization transducer and an oscillator that vibrates the atomization transducer.
  • the aerosol inhalator may further include a capillary member that transports the aerosol-generating liquid from the storage section to the atomization transducer by capillary force.
  • the storage section may contain solid tobacco material immersed in the aerosol-generating liquid.
  • the present disclosure provides technology related to a heater for an atomizer that can generate a sufficient amount of aerosol.
  • FIG. 1 is a schematic diagram of an aerosol inhalator according to a first embodiment.
  • FIG. 2 is a diagram illustrating the ultrasonic atomization unit.
  • FIG. 3 is a plan view of the atomization transducer.
  • FIG. 4 is a graph showing the relationship between the particle size and the volume ratio of droplets contained in each sample when the heating temperature set by the heater is changed in the atomization test.
  • FIG. 5 is a table showing a list of heating temperature settings of the heater in the atomization test.
  • the aerosol inhaler includes a storage section for storing an aerosol generating liquid containing a flavor source, a non-heated atomization unit for generating an aerosol by atomizing the aerosol generating liquid without heating, an aerosol flow path for circulating the aerosol generated by the non-heated atomization unit toward the mouthpiece of the aerosol inhaler, and an atomization device for reducing the particle size of droplets contained in the aerosol flowing through the aerosol flow path.
  • ⁇ Embodiment 1> 1 is a schematic diagram of an aerosol inhaler 1 according to embodiment 1.
  • the aerosol inhaler 1 is provided as a flavor inhaler that allows a user to inhale an aerosol containing a flavor component.
  • Reference numeral 11 denotes the housing of the aerosol inhaler 1. Inside the housing 11 are housed an ultrasonic atomization unit 20, a cartridge 30, an aerosol flow path 40, a heater 50 as an atomization device, a power source 60, an intake sensor 70, an MCU 80 (Micro Controller Unit), etc.
  • an ultrasonic atomization unit 20 Inside the housing 11 are housed an ultrasonic atomization unit 20, a cartridge 30, an aerosol flow path 40, a heater 50 as an atomization device, a power source 60, an intake sensor 70, an MCU 80 (Micro Controller Unit), etc.
  • the shape of the housing 11 in the aerosol inhaler 1 is not particularly limited.
  • the housing 11 is also formed of a metal such as stainless steel.
  • the material of the housing 11 is not particularly limited.
  • a mouthpiece 12 is provided at the end of the housing 11, which the user holds in his/her mouth when inhaling the aerosol.
  • the X direction shown in FIG. 1 is referred to as the vertical direction of the aerosol inhalator 1, and for the sake of convenience, the side in the vertical direction X where the mouthpiece 12 is located is defined as the top side, and the opposite side as the bottom side.
  • the top side of the aerosol inhalator 1 in the vertical direction X is indicated as U, and the bottom side as D.
  • the cartridge 30, ultrasonic atomization unit 20, and aerosol flow path 40 are arranged in this order from the bottom side D along the vertical direction X, and the end of the top side U of the aerosol flow path 40 is connected to the suction mouth 12.
  • the power source 60 is a chargeable and dischargeable electricity storage device such as a secondary battery or an electric double layer capacitor, for example a lithium ion secondary battery.
  • the electrolyte of the power source 60 may be one or a combination of a gel electrolyte, an electrolytic solution, a solid electrolyte, and an ionic liquid.
  • the inhalation sensor 70 is a pressure sensor that detects the puffing (inhalation) action.
  • the inhalation sensor 70 is configured to output the value of the pressure (internal pressure) change inside the housing 11 caused by the user inhaling through the mouthpiece 12.
  • the inhalation sensor 70 outputs an output value (e.g., a voltage value or a current value) according to the internal pressure that changes according to the flow rate of air sucked from an air intake port (not shown) formed in the housing 11 toward the mouthpiece 12 (i.e., the user's puffing action).
  • the inhalation sensor 70 may output an analog value, or may output a digital value converted from an analog value.
  • the inhalation sensor 70 may have a built-in temperature sensor that detects the temperature (outside air temperature) of the environment in which the housing 11 is placed in order to compensate for the detected pressure.
  • the inhalation sensor 70 may be composed of a condenser microphone, a flow rate sensor, or the like, instead of a pressure sensor.
  • the position, size, number, etc. of the air intake port provided in the housing 11 are not particularly limited.
  • the MCU 80 is an electronic component that performs various controls of the aerosol inhaler 1.
  • the MCU 80 is mainly composed of a processor, and may further include a memory composed of a storage medium such as a RAM (Random Access Memory) required for the operation of the processor and a ROM (Read Only Memory) that stores various information.
  • the processor is, for example, an electric circuit that combines circuit elements such as semiconductor elements. For example, when a user performs a puffing operation and the output value of the inhalation sensor 70 exceeds a threshold, the MCU 80 determines that an aerosol generation request has been made, and when the output value of the inhalation sensor 70 subsequently falls below this threshold, the MCU 80 determines that the aerosol generation request has been terminated.
  • the output value of the inhalation sensor 70 is used as a signal indicating an aerosol generation request.
  • the MCU 80 may detect an aerosol generation request based on the operation of an operation unit (not shown) provided on the housing 11 instead of the inhalation sensor 70.
  • the operation unit may be configured to output a signal indicating an aerosol generation request to the MCU 80. Examples of the operation unit described above include a push button switch and a touch panel, but are not particularly limited thereto.
  • the housing 11 may be provided with a notification unit (not shown) that notifies various types of information.
  • the notification unit may be configured to include, for example, a light-emitting element.
  • the notification unit may notify various types of information according to the color emitted by the light-emitting element.
  • the notification unit may be configured to include a vibration element.
  • the housing 11 is provided with a charging terminal (not shown) that can be electrically connected to an external power source.
  • the charging terminal is not particularly limited, and may be, for example, a receptacle to which a USB (Universal Serial Bus) terminal, a microUSB terminal, etc. can be connected.
  • USB Universal Serial Bus
  • the cartridge 30 includes a storage tank 31 as a storage section for storing the aerosol generating liquid, and a wick 32.
  • the cartridge 30 is detachable from the housing 11. That is, the cartridge 30 can be stored inside the housing 11, and conversely, can be removed from inside the housing 11. Therefore, the aerosol inhaler 1 can be used by replacing the cartridge 30.
  • an opening/closing lid 111 is provided on the bottom 11A provided on the bottom side D of the housing 11, and by opening the opening/closing lid 111, the cartridge 30 can be attached to a cartridge mounting section formed as a recess inside the housing 11, or conversely, the cartridge 30 can be removed from the cartridge mounting section.
  • the opening/closing lid 111 may be, for example, a hinged opening/closing lid, but is not particularly limited thereto.
  • the storage tank 31 of the cartridge 30 is a container that stores the aerosol generating liquid LQ in a hollow storage chamber formed inside.
  • the storage tank 31 is formed from a resin such as polycarbonate, but the material is not particularly limited.
  • the aerosol generating liquid LQ is a liquid that generates an aerosol by being atomized by the ultrasonic atomization unit 20. There is no particular limit to the type of the aerosol generating liquid LQ.
  • the aerosol generating liquid LQ may be, for example, a liquid containing one or more substances selected from glycerin, propylene glycol, triacetin, and 1,3-butanediol.
  • the aerosol generating liquid LQ also contains a flavor source.
  • a flavor source there is no particular limitation on the type of flavor source contained in the aerosol generating liquid LQ.
  • the form of the flavor source contained in the aerosol generating liquid LQ there is no particular limitation on the form of a liquid or a solid (solid).
  • the aerosol generating liquid LQ may contain nicotine as a flavor source.
  • nicotine can be dissolved in the aerosol generating liquid LQ using a solvent such as glycerin or propylene glycol to obtain an aerosol generating liquid LQ containing nicotine as a flavor source.
  • the flavor source contained in the aerosol generating liquid LQ may contain a flavor source other than nicotine instead of nicotine (including flavor components derived from tobacco materials) or in addition to nicotine.
  • flavor sources other than nicotine include menthol, natural plant flavors (e.g., comac oil, orange oil, jasmine oil, spearmint oil, peppermint oil, anise oil, coriander oil, lemon oil, chamomile oil, labdanum, vetiver oil, rose oil, and lovage oil), esters (e.g., menthyl acetate, isoamyl acetate, linalyl acetate, isoamyl propionate, butyl butyrate, and methyl salicylate), ketones (e.g., menthone, ionone, and ethyl maltol), alcohols (e.g., phenylethyl alcohol, anethole, cis-6-nonen-1-ol, and eucalyptol), aldehydes (e.g., benzaldehyde), lactones (e.g., ⁇ -pentadecalactone), neophytadiene
  • the aerosol generating liquid LQ may also contain a solid flavor source immersed in the aerosol generating liquid LQ.
  • the solid flavor source may or may not contain nicotine.
  • An example of a solid flavor source containing nicotine is a solid tobacco material.
  • the solid tobacco material may be, for example, shredded or powdered tobacco material such as tobacco leaves, or may be tobacco granules formed into granules or a tobacco molded body formed into a predetermined shape.
  • the tobacco molded body may be obtained, for example, by solidifying the residue of the tobacco material (tobacco residue) after extracting tobacco extract components from tobacco material such as tobacco leaves, molding it into a predetermined shape, and adding the extracted tobacco extract components to this molded body.
  • the aerosol generating liquid LQ may contain a solid flavor source that does not contain nicotine.
  • the aerosol generating liquid LQ contains flavor components (e.g., nicotine, etc.) that have dissolved from the solid flavor source.
  • the storage tank 31 of the cartridge 30 has an opening 31A formed at the top, and a wick 32 is attached to the storage tank 31 so as to close this opening 31A.
  • the wick 32 is a capillary member that uses capillary action to absorb and hold the aerosol generating liquid LQ stored in the storage tank 31, while supplying (transporting) the aerosol generating liquid LQ to the ultrasonic atomization unit 20. Therefore, the wick 32 is always in a state of being wetted with the aerosol generating liquid LQ.
  • the wick 32 can be made of, for example, a fiber material such as glass fiber or cotton, or a porous material such as porous ceramic.
  • the wick 32 may be formed into a predetermined shape.
  • the wick 32 is formed into a columnar shape extending in the vertical direction, with the upper end protruding upward from the opening 31A of the storage tank 31, and the remaining part being accommodated in the storage chamber of the storage tank 31.
  • the wick 32 is positioned so that its upper end surface abuts against the atomization transducer of the ultrasonic atomization unit 20 (described in more detail below).
  • the aerosol flow path 40 is a hollow air passage formed inside the cylindrical sleeve 41, and is disposed between the ultrasonic atomization unit 20 and the suction port 12.
  • the detailed structure of the ultrasonic atomization unit 20 will be described later, but the aerosol flow path 40 is a passage for circulating the aerosol generated by the ultrasonic atomization unit 20 atomizing the aerosol generating liquid LQ and transporting it to the suction port 12.
  • the end of the cylindrical sleeve 41 on the bottom side D is called the upstream end 41A
  • the end of the cylindrical sleeve 41 on the top side U is called the downstream end 41B.
  • the upstream end 41A of the cylindrical sleeve 41 forms the upstream end of the aerosol flow path 40 through which the aerosol flows, and the downstream end 41B forms the downstream end of the aerosol flow path 40.
  • the upstream end 41A of the cylindrical sleeve 41 is disposed facing the ultrasonic atomization unit 20, and the downstream end 41B of the cylindrical sleeve 41 is connected to the suction port 12.
  • the ultrasonic atomization unit 20 is a unit for generating aerosol by atomizing the aerosol generating liquid LQ using ultrasonic waves without heating, and is an example of a non-heating atomization unit.
  • Figure 2 is a diagram for explaining the ultrasonic atomization unit 20. The ultrasonic atomization unit 20 will be explained below with reference to Figure 2.
  • the ultrasonic atomization unit 20 includes an atomization unit housing 21, an atomization vibrator 22 housed in the atomization unit housing 21, an oscillator 23, etc.
  • the atomization unit housing 21 is positioned and fixed inside the housing 11, and its shape is not particularly limited.
  • the atomization unit housing 21 has a hollow columnar box shape including an inlet wall 211 and an outlet wall 212 spaced apart along the vertical direction X of the aerosol inhaler 1, and a side wall 213 connecting them.
  • the atomization unit housing 21 has the inlet wall 211 and the outlet wall 212 arranged opposite each other, with the inlet wall 211 facing the cartridge 30 side and the outlet wall 212 facing the aerosol flow path 40 (cylindrical sleeve 41).
  • the inlet wall 211 and the outlet wall 212 of the atomization unit housing 21 each have an opening arranged in a coaxial position.
  • the opening in the inlet wall 211 will be referred to as the inlet side opening 24, and the opening in the outlet wall 212 will be referred to as the outlet side opening 25.
  • the atomization unit housing 21 is attached, for example, to the upstream end 41A of the cylindrical sleeve 41.
  • the atomization unit housing 21 may be attached, for example, to the cylindrical sleeve 41 in a manner that allows it to be detached. In this case, the ultrasonic atomization unit 20 can be removed for replacement or cleaning.
  • the nebulization vibrator 22 is a plate element configured to vibrate when the transmitter 23 is activated.
  • the nebulization vibrator 22 is formed of a thin metal disk.
  • the nebulization vibrator 22 may be formed of an aluminum disk.
  • a large number of holes 221 are provided at the center of the plane of the nebulization vibrator 22 so as to penetrate in the plate thickness direction.
  • the holes 221 of the nebulization vibrator 22 extend from the inlet surface 22A of the nebulization vibrator 22 to the outlet surface 22B located on the opposite side of the inlet surface 22A.
  • the inlet surface 22A of the nebulization vibrator 22 is the surface facing the cartridge 30, and the outlet surface 22B is the surface facing the aerosol flow path 40 (cylindrical sleeve 41).
  • FIG. 3 is a plan view of the atomization vibrator 22.
  • the perforated area A1 located inside the chain line L of the planar area of the atomization vibrator 22 is formed in a mesh shape by arranging a plurality of holes 221 at intervals.
  • the peripheral area A2 located outside the chain line L of the planar area of the atomization vibrator 22 does not have holes 221 formed therein.
  • a plurality of holes 221 may be arranged at intervals over the entire surface of the atomization vibrator 22.
  • the holes 221 of the atomization vibrator 22 have a circular shape, but the shape of the holes 221 is not particularly limited.
  • the cross-sectional area of the holes 221 is not particularly limited, but for example, the holes 221 can be formed as fine holes having a diameter of about several ⁇ m.
  • the number of holes 221 formed in the atomization vibrator 22 is not particularly limited, but several hundred to several thousand holes 221 may be formed in the atomization vibrator 22.
  • the holes 221 are shown as an approximation, and the relative sizes of the perforated area A1 and the holes 221 shown in the figure differ from the actual sizes.
  • the transmitter 23 is a device that generates sustained vibrations with periodicity when it is activated.
  • the transmitter 23 may be configured to include a piezoelectric material (generally zirconium titanate (PZT)).
  • the shape of the piezoelectric material is not particularly limited, but may have, for example, a circular disk shape capable of transmitting vibrations to the outer peripheral area A2 (see FIG. 3) of the atomization vibrator 22.
  • the transmitter 23 is in contact with the atomization vibrator 22, and the vibrations generated by the transmitter 23 are directly transmitted to the atomization vibrator 22, but this is not limited thereto.
  • a vibration transmission member (not shown) may be interposed between the transmitter 23 and the atomization vibrator 22, and the vibrations of the transmitter 23 may be transmitted to the atomization vibrator 22 via the vibration transmission member, thereby vibrating the atomization vibrator 22.
  • the transmitter 23 is arranged in contact with the outlet surface 22B of the atomization transducer 22, but instead, the transmitter 23 may be arranged in contact with the inlet surface 22A of the atomization transducer 22.
  • the transmitter 23 may be joined to the atomization vibrator 22, or may be configured so that the transmitter 23 is pressed against the atomization vibrator 22 by elastic force or the like, thereby maintaining a contact state between the two.
  • the transmitter 23 and the atomization vibrator 22 are supported within the atomization unit housing 21 by a pair of elastic O-rings 26, which allows the transmitter 23 and the atomization vibrator 22 to vibrate within the atomization unit housing 21.
  • the atomization vibrator 22 is arranged so that the perforated area A1 faces the inlet opening 24 and the outlet opening 25 of the atomization unit housing 21.
  • the perforated area A1 of the atomization vibrator 22 is arranged coaxially with the inlet opening 24 and the outlet opening 25 of the atomization unit housing 21.
  • the upper end side of the wick 32 extends into the atomization unit housing 21 through the inlet side opening 24, and the upper end surface 32A of the wick 32 abuts against the inlet surface 22A of the atomization vibrator 22. More specifically, the upper end surface 32A of the wick 32 abuts against the perforated area A1 on the inlet surface 22A of the atomization vibrator 22.
  • the aerosol generating liquid LQ transported by the wick 32 is supplied from the upper end surface 32A of the wick 32 to the inlet surface 22A of the atomization transducer 22. More specifically, the aerosol generating liquid LQ stored in the storage tank 31 of the cartridge 30 is absorbed and held in the wick 32 by the capillary force of the wick 32, and is transported to the inlet surface 22A of the atomization transducer 22, which is in fluid contact with the upper end surface 32A of the wick 32.
  • the MCU 80 of the aerosol inhaler 1 When the MCU 80 of the aerosol inhaler 1 detects an aerosol generation request based on the output value of the intake sensor 70, for example, it causes the power source 60 to supply operating power to the transmitter 23, causing the transmitter 23 to vibrate.
  • the operating power from the power source 60 to the transmitter 23 can be supplied, for example, via a lead wire, terminal, etc. (not shown) arranged inside the housing 11.
  • a spring-loaded conductive pin (not shown) may be provided on the housing 11 side, and the spring-loaded conductive pin may be configured to be electrically connected to a terminal on the transmitter 23 side when the ultrasonic atomization unit 20 is attached to the housing 11.
  • the vibration of the transmitter 23 is transmitted to the atomization vibrator 22, causing the atomization vibrator 22 to vibrate.
  • the direction of amplitude of the vibration of the atomization vibrator 22 is set parallel to the vertical direction X, in other words, the direction of amplitude of the atomization vibrator 22 is set in a direction approximately perpendicular to the upper end surface 32A of the wick 32.
  • the aerosol generating liquid LQ absorbed and held in the wick 32 is discharged through the holes 221 formed in the perforated area A1 of the atomization vibrator 22 into the atomization chamber 27 formed on the outlet surface 22B side.
  • the aerosol generating liquid LQ passes through the holes 221 (pores) and is discharged into the atomization chamber 27, where it is misted.
  • air taken into the housing 11 from the air intake port when the user inhales the mouthpiece 12 is supplied to the atomization chamber 27 through an internal passage (not shown), and the mist of the aerosol generating liquid LQ is mixed with the air in the atomization chamber 27 to form an aerosol.
  • the aerosol generating liquid LQ contains, for example, a solid tobacco material as a flavor source in a soaked state. Therefore, the aerosol generating liquid LQ contains flavor components (e.g., nicotine, etc.) dissolved from the solid tobacco material. Since the wick 32 is formed of a capillary material, the wick 32 also serves as a filter material and can suppress the transport of the solid tobacco material (solid flavor source) to the atomization oscillator 22. In other words, the atomization oscillator 22 can be prevented from becoming dirty or the hole 221 from becoming clogged due to the contact of the atomization oscillator 22 with the solid tobacco material (solid flavor source).
  • the wick 32 is formed of a capillary material, the wick 32 also serves as a filter material and can suppress the transport of the solid tobacco material (solid flavor source) to the atomization oscillator 22. In other words, the atomization oscillator 22 can be prevented from becoming dirty or the hole 221 from becoming clogged due to the contact of the atomization oscil
  • the aerosol generated by the ultrasonic atomization unit 20 flows through the aerosol flow path 40 and is ultimately inhaled by the user through the mouthpiece 12.
  • the ultrasonic atomization unit 20 is configured as a non-heating atomization unit that atomizes the aerosol generating liquid LQ without heating. Therefore, the mist-like aerosol generated by the ultrasonic atomization unit 20 has a relatively large particle diameter (mist particle diameter) of the droplets contained in the aerosol at that time. Since the aerosol generating liquid LQ in this embodiment contains a flavor source, if the aerosol with a large mist particle diameter is inhaled by the user through the mouthpiece 12, it may cause choking or the like. Therefore, the aerosol inhaler 1 according to this embodiment is equipped with a heater 50 as an atomization device that finely reduces the particle diameter of the droplets contained in the aerosol flowing through the aerosol flow path 40.
  • the heater 50 is provided after the ultrasonic atomization unit 20 with respect to the flow direction of the aerosol, specifically, in the aerosol flow path 40.
  • the heater 50 is, for example, an electric heater that operates when operating power is supplied from a power source 60.
  • the power supply from the power source 60 to the heater 50 is controlled by the MCU 80.
  • the operating power of the heater 50 is also supplied from the power source 60 via lead wires, terminals, etc. (not shown) that are arranged in the housing 11.
  • the heater 50 is disposed in the heating section 40C of the aerosol flow path 40 (see Figs. 1 and 2).
  • the heater 50 may be, for example, a resistance heater or a ceramic heater, and may be embedded in the heating section 40C of the aerosol flow path 40.
  • the heater 50 may be disposed on the outer peripheral surface or the inner peripheral surface of the heating section 40C of the aerosol flow path 40.
  • the heater 50 is disposed adjacent to the rear of the ultrasonic atomization unit 20. That is, the heater 50 is disposed at or near the upstream end 41A of the cylindrical sleeve 41 that forms the aerosol flow path 40.
  • the heater 50 By disposing the heater 50 adjacent to the ultrasonic atomization unit 20 in this manner, the aerosol can be heated immediately after it is generated in the atomization chamber 27. This makes it easier to control the particle size of the droplets contained in the aerosol.
  • the above configuration also has the effect of making the device more compact.
  • the heater 50 atomization device preferably reduces the particle diameter of the droplets contained in the aerosol flowing through the aerosol flow path 40 to 2 ⁇ m or less, and more preferably to about 1.5 ⁇ m. This makes it possible to more effectively prevent the user from choking when inhaling the aerosol.
  • the heater 50 is preferably set to a heating setting temperature of 170°C or higher when heating the aerosol flowing through the aerosol flow path 40.
  • the upper limit of the heating setting temperature of the heater 50 is not particularly limited, but an example is a mode in which the heating setting temperature is set to 250°C or lower from the viewpoint of the power consumption of the heater 50 or the temperature of the aerosol when inhaled from the mouthpiece 12 during use of the aerosol inhaler 1. That is, the heating setting temperature of the heater 50 may be set in the range of 170°C or higher and 250°C or lower.
  • the heating setting temperature of the heater 50 may be set to an appropriate temperature higher than 250°C, for example, 300°C, 350°C, etc.
  • the particle size of droplets contained in aerosol means D90 (cumulative 90% particle size) obtained by the volumetric particle size distribution of droplets (particle group) contained in aerosol.
  • the particle size of droplets contained in aerosol (cumulative 90% particle size (D90)) is defined as the particle size at which the ratio of the cumulative value of the particle frequency % on the larger side to the cumulative value of the particle frequency % on the smaller side is 10:90 when the particle size distribution of droplets contained in aerosol is measured on a volumetric basis and divided into two from a certain particle size.
  • the particle size distribution of droplets contained in aerosol can be obtained, for example, by particle size distribution measurement based on laser diffraction and scattering.
  • the laser diffraction and scattering method is a method for measuring the particle size by utilizing the fact that the light intensity distribution of diffracted and scattered light differs depending on the particle size when a laser beam is applied to a particle sample.
  • the particle size (cumulative 90% particle size (D90)) of the droplets contained in the aerosol can be measured, for example, using a commercially available particle size distribution measuring device (SPRAYTEC model STP5321, manufactured by Malvern).
  • Figure 4 is a graph showing the relationship between the particle diameter (Particle diameter) and volume ratio (Volume) of the droplets contained in each sample when the heating temperature setting of the heater 50 is changed in the atomization test.
  • the heating temperature setting for each sample when heated by the heater 50 is as shown in the heating temperature setting list in Figure 5.
  • Sample No. 1 (control) is a sample in which the heater 50 is turned off and the mist generated by the ultrasonic atomization unit 20 is not heated.
  • the particle diameter corresponding to the peak volumetric percentage in the sample is approximately 6 ⁇ m.
  • the particle diameter corresponding to the peak volumetric percentage in the sample is approximately 1.5 ⁇ m, and it can be seen that the droplets contained in the sample are significantly atomized.
  • a 2% nicotine solution (pH 4.0, adjusted with malic acid) was used as the aerosol generating liquid LQ, and the aerosol generated by the ultrasonic atomization unit 20 was inhaled when it was atomized with the heater 50 set to a heating temperature of 170°C, and when it was not atomized with the heater 50 turned off (control), and the difference in somatic sensations during inhalation was evaluated.
  • the aerosol generated by the ultrasonic atomization unit 20 was inhaled as is without atomization by turning off the heater 50, a strong choking sensation was felt when inhaled.
  • the aerosol atomized with the heating temperature set to 170°C although there was irritation to the throat when inhaled, no choking sensation was felt, and the effect of suppressing the choking sensation was obtained.
  • the ultrasonic atomization unit 20 may be configured integrally with the cartridge 30, and the ultrasonic atomization unit 20 may be configured to be replaceable.
  • Aerosol inhaler 11 Housing 20: Ultrasonic atomization unit 30: Cartridge 40: Aerosol flow path 50: Heater

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Abstract

Cet aspirateur d'aérosol est pourvu d'une partie de stockage qui stocke un liquide de génération d'aérosol contenant une source d'arôme, d'une unité d'atomisation non chauffante qui génère un aérosol par atomisation du liquide de génération d'aérosol sans chauffage, d'une voie d'écoulement d'aérosol qui distribue l'aérosol généré par l'unité d'atomisation non chauffante vers une entrée de l'aspirateur d'aérosol, et d'un dispositif de micronisation qui micronise la taille de particule de gouttelettes contenues dans l'aérosol s'écoulant dans la voie d'écoulement d'aérosol.
PCT/JP2022/041019 2022-11-02 2022-11-02 Aspirateur d'aérosol WO2024095403A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2022/041019 WO2024095403A1 (fr) 2022-11-02 2022-11-02 Aspirateur d'aérosol
PCT/JP2023/010449 WO2024095507A1 (fr) 2022-11-02 2023-03-16 Inhalateur d'aérosol

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Application Number Priority Date Filing Date Title
PCT/JP2022/041019 WO2024095403A1 (fr) 2022-11-02 2022-11-02 Aspirateur d'aérosol

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WO2024095403A1 true WO2024095403A1 (fr) 2024-05-10

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