WO2023042362A1 - Système de génération d'aérosol, procédé de commande, et programme - Google Patents

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

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Publication number
WO2023042362A1
WO2023042362A1 PCT/JP2021/034233 JP2021034233W WO2023042362A1 WO 2023042362 A1 WO2023042362 A1 WO 2023042362A1 JP 2021034233 W JP2021034233 W JP 2021034233W WO 2023042362 A1 WO2023042362 A1 WO 2023042362A1
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WO
WIPO (PCT)
Prior art keywords
aerosol
induction coil
induction
generating system
suction device
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PCT/JP2021/034233
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English (en)
Japanese (ja)
Inventor
貴文 泉屋
和俊 芹田
玲二朗 川崎
Original Assignee
日本たばこ産業株式会社
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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/JP2021/034233 priority Critical patent/WO2023042362A1/fr
Publication of WO2023042362A1 publication Critical patent/WO2023042362A1/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
    • A24F40/40—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

Definitions

  • the present invention relates to an aerosol generation system, control method, and program.
  • the suction device uses a base material including an aerosol source for generating an aerosol and a flavor source for imparting a flavor component to the generated aerosol to generate an aerosol imparted with a flavor component.
  • a user can enjoy the flavor by inhaling the flavor component-applied aerosol generated by the suction device.
  • the action of the user inhaling the aerosol is hereinafter also referred to as puffing or puffing action.
  • the induction heating type suction device directly raises the temperature of the base material, so it is considered that the heating efficiency is higher than the method using an external heat source. Further improvement in heating efficiency is demanded.
  • an object of the present invention is to provide a mechanism capable of improving the heating efficiency of an induction heating type suction device.
  • an aerosol-generating system comprising an aerosol-generating article and a suction device for generating an aerosol using the aerosol-generating article, wherein the aerosol-generating article is , an aerosol source, wherein the suction device includes a container capable of containing the aerosol-generating article, and a plurality of transverses for inductively heating a susceptor in thermal proximity to the aerosol-generating article contained in the container. and an induction coil of the type, wherein a plurality of said induction coils are connected in a constructive manner.
  • the plurality of induction coils may be arranged so that their axial directions match or substantially match each other.
  • the plurality of induction coils may be arranged at a position where at least a part of them overlaps on the side surface of the accommodating portion.
  • a plurality of the induction coils may be arranged at positions facing each other with the accommodating portion interposed therebetween.
  • the RLC circuit including the multiple induction coils may be a series resonant circuit.
  • the plurality of induction coils may be connected in parallel.
  • the plurality of induction coils may be connected in series.
  • the suction device may have a thermal diffusion layer made of a non-conductor having a predetermined thermal conductivity, and the thermal diffusion layer may be arranged in thermal proximity to the induction coil.
  • the suction device may have a plurality of induction coil groups composed of a plurality of additively connected induction coils, and the plurality of induction coil groups may be connected in parallel.
  • the suction device further includes a control section for controlling the operation of the plurality of induction coil groups, wherein the control section selects one of the plurality of induction coil groups as a supply destination of alternating current.
  • An inverter circuit that converts direct current to alternating current is connected to each of the plurality of induction coil groups, and the control unit operates the inverter circuit connected to the induction coil group of the power supply destination, The operation of the inverter circuits connected to the induction coil groups other than the induction coil group may be stopped.
  • the induction coil is formed by winding a conductor wire on an insulator, the insulator has flexibility, and the insulator and the induction coil arranged on the insulator are arranged in the housing part. may be wrapped around the
  • the induction coil may be configured by winding a plurality of conductive wires that are insulated from each other.
  • the aerosol-generating article may have the susceptor.
  • the suction device may have the susceptor in which the containing portion is arranged outside the internal space containing the aerosol-generating article.
  • the suction device may have the susceptor arranged inside the internal space in which the storage part stores the aerosol-generating article.
  • FIG. 10 is an example of a top view of a state in which a stick-shaped base material is accommodated in an accommodation portion of the suction device according to the same embodiment. It is an example of the expanded view of the induction heating part which concerns on the same embodiment. It is an example of sectional drawing of the induction heating part and accommodating part which concern on the same embodiment. It is a figure which shows an example of the connection form of several induction coils which concern on the same embodiment.
  • FIG. 10 is a diagram showing an example of a connection form of a plurality of induction coils according to the first modified example; It is a figure which shows typically an example of the circuit structure of the drive circuit which concerns on the same modification.
  • FIG. 11 is an example of a top view of a state in which a stick-shaped base material is accommodated in an accommodation portion of a suction device according to a second modified example; FIG.
  • FIG. 11 is an example of a top view of a state in which a stick-shaped base material is accommodated in an accommodation portion of a suction device according to a third modified example; It is an example of the development view of the induction heating part which concerns on the same modification. It is an example of sectional drawing of the induction heating part and accommodating part which concern on the same modification.
  • FIG. 11 is a diagram showing an example of the configuration of an induction coil according to a fourth modified example; It is a figure which shows another example of a structure of the induction coil based on the same modification.
  • FIG. 11 is an example of a top view of a state in which a stick-shaped base material is accommodated in an accommodation portion of a suction device according to a third modified example; It is an example of the development view of the induction heating part which concerns on the same modification. It is an example of sectional drawing of the induction heating part and accommodating part which concern on the same modification.
  • FIG. 11 is a diagram showing an example of the configuration of an induction
  • FIG. 11 is an example of a top view of a state in which a stick-shaped base material is accommodated in an accommodation portion of a suction device according to a fifth modified example; It is a figure which shows typically an example of the circuit structure based on the same modification.
  • elements having substantially the same functional configuration may be distinguished by attaching different alphabets or numerals after the same reference numerals.
  • a plurality of elements having substantially the same functional configuration are distinguished as induction coils 10A, 10B and 10C as required.
  • the induction coils 10A, 10B and 10C are simply referred to as the induction coil 10 when there is no particular need to distinguish between them.
  • Configuration example of suction device The suction device according to this configuration example generates an aerosol by heating a substrate including an aerosol source by induction heating (IH (Induction Heating)). This configuration example will be described below with reference to FIG.
  • IH Induction Heating
  • FIG. 1 is a schematic diagram schematically showing a configuration example of a suction device.
  • the suction device 100 includes a power supply unit 111, a sensor unit 112, a notification unit 113, a storage unit 114, a communication unit 115, a control unit 116, an induction heating unit 162, and a storage unit 140. including.
  • a user performs suction while the stick-shaped base material 150 is accommodated and held in the accommodation section 140 .
  • Each component will be described in order below.
  • the power supply unit 111 accumulates power.
  • the power supply unit 111 supplies electric power to each component of the suction device 100 .
  • the power supply unit 111 may be composed of, for example, a rechargeable battery such as a lithium ion secondary battery.
  • the power supply unit 111 may be charged by being connected to an external power supply via a USB (Universal Serial Bus) cable or the like.
  • the power supply unit 111 may be charged in a state of being disconnected from the device on the power transmission side by wireless power transmission technology. Alternatively, only the power supply unit 111 may be detached from the suction device 100 or may be replaced with a new power supply unit 111 .
  • the sensor unit 112 detects various information regarding the suction device 100 .
  • the sensor unit 112 then outputs the detected information to the control unit 116 .
  • the sensor unit 112 is configured by a pressure sensor such as a condenser microphone, a flow rate sensor, or a temperature sensor.
  • the sensor unit 112 detects a numerical value associated with the user's suction
  • the sensor unit 112 outputs information indicating that the user has performed suction to the control unit 116 .
  • the sensor unit 112 is configured by an input device, such as a button or switch, that receives information input from the user.
  • sensor unit 112 may include a button for instructing start/stop of aerosol generation.
  • the sensor unit 112 then outputs the information input by the user to the control unit 116 .
  • the sensor section 112 is configured by a temperature sensor that detects the temperature of the susceptor 161 .
  • a temperature sensor detects the temperature of the susceptor 161 based on the electrical resistance value when the induction heating section 162 is powered, for example.
  • the sensor section 112 may detect the temperature of the stick-shaped substrate 150 held by the housing section 140 based on the temperature of the susceptor 161 .
  • the notification unit 113 notifies the user of information.
  • the notification unit 113 is configured by a light-emitting device such as an LED (Light Emitting Diode).
  • the notification unit 113 emits light in different light emission patterns when the power supply unit 111 is in a charging required state, when the power supply unit 111 is being charged, when an abnormality occurs in the suction device 100, and the like.
  • the light emission pattern here is a concept including color, timing of lighting/lighting out, and the like.
  • the notification unit 113 may be configured by a display device that displays an image, a sound output device that outputs sound, a vibration device that vibrates, or the like, together with or instead of the light emitting device.
  • the notification unit 113 may notify information indicating that suction by the user has become possible.
  • Information indicating that suction by the user has become possible is notified, for example, when the temperature of the susceptor 161 heated by electromagnetic induction reaches a predetermined temperature.
  • the storage unit 114 stores various information for the operation of the suction device 100 .
  • the storage unit 114 is configured by, for example, a non-volatile storage medium such as flash memory.
  • An example of the information stored in the storage unit 114 is information regarding the OS (Operating System) of the suction device 100, such as control details of various components by the control unit 116.
  • FIG. Another example of the information stored in the storage unit 114 is information related to suction by the user, such as the number of times of suction, suction time, total suction time, and the like.
  • the communication unit 115 is a communication interface for transmitting and receiving information between the suction device 100 and other devices.
  • the communication unit 115 performs communication conforming to any wired or wireless communication standard.
  • a communication standard for example, wireless LAN (Local Area Network), wired LAN, Wi-Fi (registered trademark), Bluetooth (registered trademark), or the like can be adopted.
  • the communication unit 115 transmits information about suction by the user to the smartphone so that the smartphone displays information about suction by the user.
  • the communication unit 115 receives new OS information from the server in order to update the OS information stored in the storage unit 114 .
  • the control unit 116 functions as an arithmetic processing device and a control device, and controls the general operations within the suction device 100 according to various programs.
  • the control unit 116 is realized by an electronic circuit such as a CPU (Central Processing Unit) and a microprocessor.
  • the control unit 116 may include a ROM (Read Only Memory) for storing programs to be used, calculation parameters, etc., and a RAM (Random Access Memory) for temporarily storing parameters, etc. that change as appropriate.
  • the suction device 100 executes various processes under the control of the controller 116 .
  • the accommodating part 140 has an internal space 141 and can accommodate the stick-shaped base material 150 in the internal space 141 .
  • the accommodating part 140 holds the stick-shaped base material 150 while accommodating a part of the stick-shaped base material 150 in the internal space 141 .
  • the accommodating portion 140 has an opening 142 that communicates the internal space 141 with the outside, and holds the stick-shaped substrate 150 inserted into the internal space 141 through the opening 142 .
  • the housing portion 140 is a cylindrical body having an opening 142 and a bottom portion 143 as a bottom surface, and defines a columnar internal space 141 .
  • the accommodating part 140 is configured such that the inner diameter is smaller than the outer diameter of the stick-shaped base material 150 at least in part in the height direction of the cylindrical body, and the stick-shaped base material 150 inserted into the inner space 141 is held in the container.
  • the stick-shaped substrate 150 can be held by pressing from the outer periphery.
  • the containment portion 140 also functions to define a flow path for air through the stick-shaped substrate 150 .
  • An air inlet hole which is an inlet for air into the flow path, is arranged, for example, in the bottom portion 143 .
  • the air outflow hole which is the exit of air from such a channel, is the opening 142 .
  • the stick-shaped base material 150 is a stick-shaped member.
  • the stick-type substrate 150 includes a substrate portion 151 and a mouthpiece portion 152 .
  • the base material portion 151 includes an aerosol source.
  • the aerosol source is atomized by heating to produce an aerosol.
  • the aerosol source may be tobacco-derived, such as, for example, a processed product of cut tobacco or tobacco material formed into granules, sheets, or powder. Aerosol sources may also include non-tobacco sources made from plants other than tobacco, such as mints and herbs. By way of example, the aerosol source may contain perfume ingredients such as menthol. If the inhalation device 100 is a medical inhaler, the aerosol source may contain a medicament for inhalation by the patient.
  • the aerosol source is not limited to solids, and may be, for example, polyhydric alcohols such as glycerin and propylene glycol, and liquids such as water. At least a portion of the base material portion 151 is accommodated in the internal space 141 of the accommodation portion 140 while the stick-shaped substrate 150 is held in the accommodation portion 140.
  • the mouthpiece 152 is a member held by the user when inhaling. At least part of the mouthpiece 152 protrudes from the opening 142 when the stick-shaped base material 150 is held in the housing 140 . Then, when the user holds the mouthpiece 152 protruding from the opening 142 in his/her mouth and sucks, air flows into the housing 140 through an air inlet hole (not shown). The air that has flowed in passes through the internal space 141 of the housing portion 140 , that is, through the base portion 151 and reaches the inside of the user's mouth together with the aerosol generated from the base portion 151 .
  • the stick-type base material 150 includes a susceptor 161 .
  • the susceptor 161 generates heat by electromagnetic induction.
  • the susceptor 161 is made of a conductive material such as metal.
  • the susceptor 161 is formed in a plate shape, for example.
  • a susceptor 161 is placed in thermal proximity to the aerosol source.
  • the susceptor 161 is included in the substrate portion 151 as well as the aerosol source. As a result, the temperature of the aerosol source rises as the temperature of the susceptor 161 rises, and the aerosol source is atomized.
  • the induction heating unit 162 heats the susceptor 161 by electromagnetic induction.
  • the induction heating section 162 includes an induction coil formed by winding a conductive wire, and is arranged around the housing section 140 .
  • an alternating current is supplied from the power supply unit 111 to the induction heating unit 162 (more precisely, an induction coil)
  • a fluctuating magnetic field is generated.
  • the induction heating unit 162 is arranged so that the generated alternating magnetic field is superimposed on the internal space 141 of the housing unit 140 .
  • the susceptor 161 is induction-heated, and the aerosol source is accordingly heated and atomized to generate an aerosol.
  • power may be supplied and an aerosol may be generated when the sensor unit 112 detects that a predetermined user input has been performed.
  • the temperature of the susceptor 161 induction-heated by the induction heating unit 162 reaches a predetermined temperature, suction by the user becomes possible.
  • the power supply may be stopped.
  • power may be supplied and aerosol may be generated during a period in which the sensor unit 112 detects that the user has inhaled.
  • the power supply unit 111 is an example of a power supply unit that supplies power to the induction heating unit 162 .
  • Stick-type substrate 150 is an example of an aerosol-generating article that includes an aerosol source and susceptor 161 .
  • the suction device 100 and stick-shaped substrate 150 cooperate to generate an aerosol that is inhaled by the user. As such, the combination of suction device 100 and stick-type substrate 150 may be viewed as an aerosol generating system.
  • Induction heating is the process of heating a conductive object by penetrating a varying magnetic field into the object.
  • Induction heating involves a magnetic field generator that generates a fluctuating magnetic field, and a conductive heated object that is heated by being exposed to the fluctuating magnetic field.
  • An example of a varying magnetic field is an alternating magnetic field.
  • the induction heating unit 162 shown in FIG. 1 is an example of a magnetic field generator.
  • the susceptor 161 shown in FIG. 1 is an example of the object to be heated.
  • the magnetic field generator and the object to be heated are arranged in relative positions such that the fluctuating magnetic field generated by the magnetic field generator penetrates into the object to be heated, when the fluctuating magnetic field is generated from the magnetic field generator, the object to be heated Eddy currents are induced.
  • Joule heat corresponding to the electrical resistance of the object to be heated is generated and the object to be heated is heated.
  • Such heating is also referred to as joule heating, ohmic heating, or resistance heating.
  • the object to be heated may have magnetism.
  • the object to be heated is further heated by magnetic hysteresis heating.
  • Magnetic hysteresis heating is the process of heating a magnetic object by impinging it with a varying magnetic field.
  • the magnetic dipoles contained in the magnetic body align along the magnetic field. Therefore, when a fluctuating magnetic field penetrates a magnetic material, the orientation of the magnetic dipole changes according to the applied fluctuating magnetic field. Due to such reorientation of the magnetic dipoles, heat is generated in the magnetic material, and the object to be heated is heated.
  • Magnetic hysteresis heating typically occurs at temperatures below the Curie point and does not occur at temperatures above the Curie point.
  • the Curie point is the temperature at which a magnetic material loses its magnetic properties. For example, when the temperature of an object to be heated which has ferromagnetism at a temperature below the Curie point exceeds the Curie point, the magnetism of the object to be heated undergoes a reversible phase transition from ferromagnetism to paramagnetism. When the temperature of the object to be heated exceeds the Curie point, magnetic hysteresis heating does not occur, so the rate of temperature increase slows down.
  • the object to be heated is made of a conductive material. Furthermore, it is desirable that the object to be heated is made of a ferromagnetic material. In the latter case, it is possible to increase the heating efficiency by combining resistance heating and magnetic hysteresis heating.
  • the object to be heated is made of one or more materials selected from a group of materials including aluminum, iron, nickel, cobalt, conductive carbon, copper, stainless steel, and the like.
  • the aerosol source can be efficiently heated compared to the case where the stick-shaped base material 150 is heated from the outer circumference or the like by an external heat source. It is possible. Moreover, when heating is performed by an external heat source, the temperature of the external heat source is inevitably higher than that of the stick-shaped substrate 150 . On the other hand, when performing induction heating, the induction heating part 162 does not reach a temperature higher than that of the stick-shaped substrate 150 . Therefore, the temperature of the suction device 100 can be kept lower than when an external heat source is used, which is a great advantage in terms of user safety.
  • FIG. 2 is a block diagram showing a configuration related to induction heating by the suction device 100 according to this embodiment.
  • the suction device 100 has a drive circuit 169.
  • the drive circuit 169 is a circuit for generating an alternating magnetic field using power supplied from the power supply section 111 .
  • drive circuit 169 has inverter circuit 163 and RLC circuit 164 .
  • the power supply unit 111 is a DC (Direct Current) power supply.
  • the inverter circuit 163 is a DC/AC (Alternate Current) inverter that converts the DC power supplied from the power supply unit 111 into AC power.
  • inverter circuit 163 is configured as a half-bridge inverter or a full-bridge inverter having one or more switching elements.
  • Inverter circuit 163 may also be a ZVS (zero voltage switching) circuit using one switching element. Examples of switching elements include MOSFETs (Metal-Oxide-Semiconductor Field Effect Transistors) and IGBTs (Insulated Gate Bipolar Transistors).
  • the RLC circuit 164 is a circuit that uses the AC power supplied from the inverter circuit 163 to generate an alternating magnetic field.
  • RLC circuit 164 includes at least induction heating portion 162 .
  • RLC circuit 164 may further comprise other circuits such as capacitors, resistors, matching circuits, and the like.
  • the induction heating section 162 uses the AC power supplied from the inverter circuit 163 to generate an alternating magnetic field in the internal space 141 of the housing section 140 . This inductively heats the susceptor 161, heats the aerosol source in thermal proximity to the susceptor 161, and generates an aerosol.
  • the configuration of the induction heating unit 162 will be described in detail below with reference to FIGS. 3 to 8. FIG.
  • FIG. 3 is a diagram showing an example of the external configuration of the induction heating unit 162 according to this embodiment.
  • FIG. 4 is an example of a top view of the stick-shaped substrate 150 accommodated in the accommodation portion 140 of the suction device 100 according to this embodiment.
  • FIG. 5 is an example of a developed view of the induction heating unit 162 according to this embodiment.
  • FIG. 6 is an example of a cross-sectional view of the induction heating unit 162 and the housing unit 140 according to this embodiment.
  • FIG. 7 is a diagram showing an example of a connection form of the plurality of induction coils 10 according to this embodiment.
  • FIG. 8 is a diagram schematically showing an example of the circuit configuration of the drive circuit 169 according to this embodiment.
  • the suction device 100 has multiple induction coils 10 (10A and 10B).
  • the induction coil 10 is a transverse induction coil.
  • an object to be heated which is spaced apart in the axial direction of the induction coil, is pierced by an alternating magnetic flux formed along the axial direction of the induction coil, thereby induction-heating the object to be heated.
  • the transverse type it is possible to downsize the suction device 100 as compared with the case of adopting the solenoid type.
  • the induction coil 10 is constructed by winding a conducting wire 19 on the substrate 20 .
  • Substrate 20 is an example of an insulator.
  • the substrate 20 has flexibility. Then, the induction heating part 162 including the substrate 20 and the induction coil 10 arranged on the substrate 20 is wound around the housing part 140 . Specifically, as shown in FIGS. 4 and 6, the board 20A with the induction coil 10A arranged thereon is wound around the accommodating portion 140, and the board 20B with the induction coil 10B arranged thereon is wound thereon.
  • the induction heating unit 162 may be, for example, FPC (Flexible printed circuits).
  • the substrate 20 is made of a flexible material such as PI (polyimide).
  • the induction coil 10 is configured by printing nano-silver particles on the substrate 20, for example. As shown in FIG. 3 , the induction heating section 162 forms a cylindrical body while being wound around the housing section 140 .
  • the induction coil 10A and the induction coil 10B are arranged so that their axial directions match or substantially match each other. Specifically, the induction coil 10A and the induction coil 10B are arranged at a position where at least a part of them overlap on the side surface of the housing portion 140 . For example, as shown in FIG. 5, the induction coil 10A and the induction coil 10B are configured to have the same shape. Then, as shown in FIG. 4, the induction coil 10A and the induction coil 10B are arranged on the substrate 20 so as to overlap while being wound around the housing portion 140. As shown in FIG.
  • the induction coil 10 ⁇ /b>A and the induction coil 10 ⁇ /b>B overlap in the radial direction of the accommodation portion 140 in a state where the substrate 20 is wound around the accommodation portion 140 .
  • the induction coil 10A and the induction coil 10B are jointly connected as described later, a deviation between the axial direction of the induction coil 10A and the axial direction of the induction coil 10B is allowed.
  • the substrate 20B has a through hole penetrating through the substrate 20B in the thickness direction, and the second terminal 12B is arranged in the through hole. Similarly, the first terminal 11B is arranged in a through-hole penetrating in the plate thickness direction provided in the substrate 20B.
  • the substrates 20A and 20B are wound around the accommodating portion 140 so that the first terminals 11A and 11B overlap, and the second terminals 12A and 12B overlap. Thereby, as shown in FIG. 6, the second terminal 12A and the second terminal 12B are connected. Similarly, the first terminal 11A and the first terminal 11B are connected.
  • the induction coil 10A and the induction coil 10B are connected in parallel.
  • the first terminal 11A and the first terminal 11B are connected in parallel to the power supply section 111
  • the second terminal 12A and the second terminal 12B are connected in parallel to the power supply section 111. Since the induction coil 10A and the induction coil 10B have the same winding direction of the conductor 19, the direction 90A of the current flowing through the induction coil 10A and the direction 90B of the current flowing through the induction coil 10B match. Therefore, the magnetic fields 91 formed by the induction coils 10A and 10B are oriented in the same direction and reinforce each other. Thus, the induction coil 10A and the induction coil 10B are jointly connected.
  • a dynamic connection refers to magnetically connecting a plurality of coils so that the magnetic fields generated by the coils strengthen each other.
  • the mutually reinforcing magnetic field 91 formed by the induction coils 10A and 10B enters the susceptor 161 and induction-heats the susceptor 161 located in the axial direction of the induction coils 10A and 10B. do.
  • the susceptor 161 can be induction-heated by jointly connecting the plurality of induction coils 10, so that the heating efficiency of the susceptor 161 can be improved.
  • the drive circuit 169 has an RLC circuit 164 including induction coils 10A and 10B.
  • the RLC circuit 164 has an induction coil 10A and an induction coil 10B connected in parallel, and a capacitor 13 connected in series with these induction coils 10 . Therefore, the RLC circuit 164 shown in FIG. 8 becomes a series resonant circuit when operated at the resonant frequency.
  • RLC circuit 164 is connected to inverter circuit 163 .
  • the inverter circuit 163 converts the applied direct current into alternating current and applies the converted alternating current to the RLC circuit 164 .
  • the RLC circuit 164 may have other components such as resistors (not shown).
  • a combined inductance L in the RLC circuit 164 shown in FIG. 8 is represented by the following equation.
  • L A is the inductance of the induction coil 10A.
  • LB is the inductance of the induction coil 10B.
  • M is the mutual inductance.
  • the induction coil 10A and the induction coil 10B are connected in parallel, the current value per induction coil 10 decreases. Therefore, heat generation in the induction coil 10 can be suppressed. Furthermore, the combined inductance L when a plurality of induction coils 10 are connected in parallel becomes larger than the inductance when a single induction coil 10 is used. As a result, when a plurality of induction coils 10 are connected in parallel, the Q value is higher than when a single induction coil 10 is used. Therefore, coil loss can be reduced. That is, it becomes possible to improve energy efficiency.
  • induction heating unit 162 has been described in detail above. Next, with reference to FIG. 2 again, components involved in induction heating by the suction device 100 will be described.
  • control unit 116 The control section 116 has a function of controlling the operation of the induction heating section 162 . Specifically, control unit 116 controls induction heating by induction coil 10 by controlling power supply from inverter circuit 163 to induction coil 10 .
  • the control unit 116 estimates the temperature of the susceptor 161 based on information on the DC power supplied from the power supply unit 111 to the driving circuit 169 . Specifically, the control unit 116 calculates the electrical resistance value of the drive circuit 169 based on the current value and voltage value of the DC power supplied from the power supply unit 111 to the drive circuit 169 .
  • the controller 116 estimates the temperature of the susceptor 161 based on the electrical resistance value of the drive circuit 169 .
  • the control section 116 controls the operation of the induction heating section 162 based on the heating profile.
  • the heating profile is information that defines the time series transition of the target temperature, which is the target value of the temperature of the susceptor 161 .
  • the control unit 116 controls the operation of the induction heating unit 162 so that the estimated temperature of the susceptor 161 transitions in the same manner as the target temperature defined in the heating profile. This produces an aerosol as planned by the heating profile.
  • the heating profile is typically designed to optimize the flavor experienced by the user when the user inhales the aerosol produced from the stick-shaped substrate 150 . Therefore, by controlling the operation of the induction heating unit 162 based on the heating profile, it is possible to optimize the flavor tasted by the user.
  • FIG. 9 is a diagram showing an example of a connection form of a plurality of induction coils 10 according to this modified example.
  • FIG. 10 is a diagram schematically showing an example of the circuit configuration of the drive circuit 169 according to this modification.
  • the induction coil 10A and the induction coil 10B are connected in series. Especially, the first terminal 11A and the second terminal 12B are connected, and the second terminal 12A and the first terminal 11B are connected to the power supply section 111 . Since the induction coil 10A and the induction coil 10B have the same winding direction of the conductor 19, the direction 90A of the current flowing through the induction coil 10A and the direction 90B of the current flowing through the induction coil 10B match. Therefore, the magnetic fields 91 formed by the induction coils 10A and 10B are oriented in the same direction and reinforce each other. Thus, the induction coil 10A and the induction coil 10B are jointly connected.
  • the susceptor 161 can be induction-heated by jointly connecting a plurality of induction coils 10, so that the heating efficiency of the susceptor 161 can be improved.
  • the RLC circuit 164 As shown in FIG. 10, the RLC circuit 164 according to this modification has an induction coil 10A and an induction coil 10B that are connected in series, and a capacitor 13 that is connected in series with these induction coils 10. Therefore, the RLC circuit 164 shown in FIG. 10 becomes a series resonant circuit when operated at the resonant frequency.
  • the RLC circuit 164 is connected to the inverter circuit 163 and receives alternating current from the inverter circuit 163 .
  • a combined inductance L in the RLC circuit 164 shown in FIG. 10 is represented by the following equation.
  • the combined inductance L increases by twice the mutual inductance M, so the Q value also increases. Therefore, coil loss can be reduced. That is, it becomes possible to improve energy efficiency.
  • FIG. 11 is an example of a top view showing a state in which a stick-shaped substrate 150 is housed in the housing portion 140 of the suction device 100 according to this modified example.
  • the induction coil 10A and the induction coil 10B are arranged at positions facing each other with the accommodating portion 140 interposed therebetween.
  • This arrangement allows the axial directions of the induction coils 10A and 10B to match or substantially match each other.
  • the induction coil 10A and the induction coil 10B may be connected in parallel as described with reference to FIG. 7, or may be connected in series as described with reference to FIG.
  • the direction 90A of the current flowing through the induction coil 10A matches the direction 90B of the current flowing through the induction coil 10B. Therefore, the magnetic fields 91 formed by the induction coils 10A and 10B are oriented in the same direction and reinforce each other.
  • the induction coil 10A and the induction coil 10B are jointly connected.
  • the susceptor 161 can be induction-heated by jointly connecting a plurality of induction coils 10, so that the heating efficiency of the susceptor 161 can be improved.
  • FIG. 12 is an example of a top view of the suction device 100 according to this modified example in which the stick-shaped substrate 150 is accommodated in the accommodation portion 140 .
  • FIG. 13 is an example of a developed view of an induction heating unit 162 according to this modification.
  • FIG. 14 is an example of a cross-sectional view of an induction heating section 162 and a housing section 140 according to this modification.
  • the induction heating section 162 has thermal diffusion layers 30A and 30B.
  • the thermal diffusion layer 30A is laminated on the substrate 20A on which the induction coil 10A is arranged.
  • the thermal diffusion layer 30B is laminated on the substrate 20B on which the induction coil 10B is arranged. Then, the substrate 20A, the induction coil 10A, the heat diffusion layer 30A, the substrate 20B, the induction coil 10B, and the heat diffusion layer 30B are laminated in order and wound around the housing portion 140.
  • the thermal diffusion layer 30 is composed of a non-conductor having a predetermined thermal conductivity.
  • the thermal diffusion layer 30 is made of a material in which a thermally conductive filler having insulating properties is contained in a heat resistant resin.
  • heat-resistant resins include polyimide and PEEK (Poly Ether Ether Ketone).
  • Thermally conductive fillers having insulating properties include alumina, magnesium oxide, boron nitride, silica, and aluminum nitride.
  • the thermal diffusion layer 30 is arranged in thermal proximity to the induction coil 10 .
  • the thermal diffusion layer 30 is arranged so that the induction coil 10 is sandwiched between the substrate 20 and the thermal diffusion layer 30.
  • the heat generated from the induction coil 10 as the current is applied can be diffused by the thermal diffusion layer 30 . This can prevent the induction coil 10 from being damaged by heat.
  • the thermal diffusion layer 30 is formed longer than the substrate 20 in the longitudinal direction of the housing portion 140 and protrudes from the substrate 20. As shown in FIGS. Such a protruding portion is connected to a heat exhaust destination. 12 and 13 show an example in which the thermal diffusion layer 30 protrudes over the entire upward direction (that is, the opening 142 side). The shape of is arbitrary.
  • FIG. 15 is a diagram showing an example of the configuration of an induction coil 10A according to this modified example.
  • the upper part of FIG. 15 shows a developed view of the substrate 20A on which the induction coil 10A is arranged.
  • the lower part of FIG. 15 shows a section including a part of the induction coil 10A shown in the upper part of FIG.
  • the conductor 19A forming the induction coil 10A may be arranged on the substrate 20A, and the insulating layer 21A may be arranged so as to cover the conductor 19A.
  • the substrate 20A and the insulating layer 21A are both examples of insulators.
  • the induction coil 10 may be constructed by winding a single insulated conductor wire 19 .
  • FIG. 16 is a diagram showing another example of the configuration of the induction coil 10A according to this modified example.
  • the upper part of FIG. 16 shows a developed view of the substrate 20A on which the induction coil 10A is arranged.
  • the lower part of FIG. 16 shows a section including a part of the induction coil 10A shown in the upper part of FIG.
  • conductive wires 19A and insulating layers 21A may be alternately laminated on a substrate 20A.
  • the substrate 20A and the insulating layer 21A are both examples of insulators.
  • the induction coil 10 may be configured by winding a plurality of conductive wires 19 that are insulated from each other. In the example shown in FIG.
  • the induction coil 10A is formed by laminating eight conductor wires 19A in each layer into three layers while being insulated from each other by an insulating layer 21A, that is, by winding 24 conductor wires 19A. is formed. These 24 conductors 19A are, for example, connected in parallel at each of the first terminal 11A and the second terminal 12A.
  • the surface area per induction coil 10 is larger than in the example shown in FIG. As a result, the amount of current flowing through one conductor wire 19 is reduced, so that heat generation of the induction coil 10 when current is applied can be suppressed. This makes it possible to prevent damage to the induction coil 10 .
  • the conducting wires 19 When the conducting wires 19 are laminated, it is desirable that the positions of the conducting wires 19 between adjacent layers are different.
  • the conductor 19A covered with the insulating layer 21A-1 and the conductor 19A covered with the insulating layer 21A-2 are alternately arranged so as not to overlap in the plate thickness direction.
  • the conducting wire 19A covered with the insulating layer 21A-2 and the conducting wire 19A covered with the insulating layer 21A-3 are alternately arranged so as not to overlap in the plate thickness direction.
  • the components for insulating the induction coil 10 are not limited to the plate-like substrate 20 and the insulating layer 21 . At least, the induction coil 10 may be configured by winding the conductor 19 covered with an insulator in a plane.
  • FIG. 17 is an example of a top view of the stick-shaped substrate 150 accommodated in the accommodation portion 140 of the suction device 100 according to this modification.
  • FIG. 18 is a diagram schematically showing an example of a circuit configuration according to this modification.
  • the suction device 100 includes induction coils 10A-1 to 10A-3 arranged on a substrate 20A and induction coils 10B-1 to 10B- arranged on a substrate 20B. 3.
  • the induction coil 10A-1 and the induction coil 10B-1 are additively connected. That is, the induction coil 10A-1 and the induction coil 10B-1 are arranged so that their axial directions coincide or substantially coincide with each other, their winding directions are the same, and current flows in the same direction. As a result, the magnetic fields 91-1 formed by the induction coils 10A-1 and 10B-1 are oriented in the same direction and strengthen each other.
  • the induction coil 10A-2 and the induction coil 10B-2 are likewise additively connected to form a magnetic field 91-2 that reinforces each other.
  • the induction coil 10A-3 and the induction coil 10B-3 are additively connected to form a magnetic field 91-3 that reinforces each other.
  • the suction device 100 according to this modification has a plurality of induction coil groups each composed of a plurality of induction coils 10 that are additively connected.
  • the suction device 100 has a plurality of drive circuits 169 (169-1 to 169-3).
  • the configuration of each of the plurality of drive circuits 169 is as described above with reference to FIG.
  • a plurality of drive circuits 169 (169-1 to 169-3), more specifically, a plurality of induction coil groups composed of a plurality of additively connected induction coils 10, are connected in parallel. According to such a configuration, each of the plurality of induction coil groups can be operated independently of each other.
  • control unit 116 controls the operation of multiple induction coil groups. More specifically, control unit 116 controls inverter circuits 163-1 to 163-3 to switch supply/stop of AC current to each of the plurality of induction coil groups.
  • control unit 116 selects one induction coil group from among the plurality of induction coil groups as the supply destination of the alternating current. Then, the control unit 116 performs induction heating based on the heating profile using one selected induction coil group.
  • the control unit 116 performs induction heating based on the heating profile using one selected induction coil group.
  • the plurality of induction coil groups are arranged at different positions in the circumferential direction of the accommodating portion 140 .
  • the multiple induction coil groups are arranged such that their axial directions are different from each other.
  • the three induction coil groups are arranged at regular intervals, that is, at intervals of 120 degrees with respect to the central axis in the cross section of the housing portion 140 .
  • the relative positional relationship with the susceptor 161 in the cross section can be made different between the plurality of induction coil groups.
  • the transverse induction coil can heat the object most efficiently by allowing the alternating magnetic flux formed along the axial direction of the induction coil to penetrate the object along the thickness direction of the object.
  • the induction coil group consisting of the induction coil 10A-1 and the induction coil 10B-1 located in the normal direction of the susceptor 161 operates the susceptor 161 most efficiently. Heatable.
  • the control unit 116 selects an induction coil group located in the normal direction of the susceptor 161 among the plurality of induction coil groups as a power supply destination.
  • the control unit 116 may select one induction coil group with the largest load current when power is supplied to each of the plurality of induction coil groups on a trial basis as one induction coil group to which power is to be supplied.
  • power feeding on a trial basis means, for example, power feeding for a short period of time before performing induction heating based on the heating profile.
  • the induction coil 10 is a transverse induction coil, and as described above with reference to FIG. 17, the relative positional relationship between each of the plurality of induction coil groups and the susceptor 161 is different.
  • the magnitude of the load current of the induction coil groups may differ from one induction coil group to another. It can be said that the larger the load current, the more easily the susceptor 161 generates heat. Therefore, according to this configuration, it is possible to select the alternating current for the induction coil group with the highest heating efficiency and heat the susceptor 161 most efficiently.
  • the selection unit 172 selects one induction coil whose operating frequency of the RLC circuit 164 including the induction coil group is closest to the resonance frequency of the RLC circuit 164 when power is supplied to each of the plurality of induction coil groups on a trial basis.
  • a group may be selected as one induction coil group to power.
  • the same induction coil group can be selected as in the case of selecting the induction coil group with the largest load current. That is, it is possible to select the alternating current for the induction coil group with the highest heating efficiency and heat the susceptor 161 most efficiently.
  • the control unit 116 operates the inverter circuit 163 connected to the induction coil group of the power supply destination, and stops the operation of the inverter circuit 163 connected to the induction coil group other than the power supply destination. For example, when the control unit 116 operates the inverter circuit 163-1 to apply an alternating current to the RLC circuit 164-1, the control unit 116 stops the operation of the inverter circuits 163-2 and 163-3, and the RLC circuit 164 -2 and RLC circuit 164-3 from the power supply section 111. Eddy currents can be induced in other induction coil groups by an alternating magnetic field generated from an active induction coil group among the plurality of induction coil groups. In this respect, by insulating the induction coil group other than the power supply destination, it is possible to prevent the eddy current from adversely affecting other components such as the power supply unit 111 .
  • the susceptor 161 is configured in a plate shape, but the present invention is not limited to this example.
  • the cross-sectional shape of the susceptor 161 may be any shape such as square, rectangle, circle or oval.
  • the susceptor 161 does not have to be configured in a longitudinal shape, and for example, a plurality of susceptors 161 configured as metal pieces may be included in the stick-shaped substrate 150 .
  • the susceptor 161 may be provided in the suction device 100 .
  • the suction device 100 may have a susceptor 161 arranged outside the internal space 141 .
  • the housing portion 140 may be made of a conductive and magnetic material and function as the susceptor 161 . Since the containing portion 140 as the susceptor 161 is in contact with the outer periphery of the base portion 151 , it can be brought into thermal proximity with the aerosol source contained in the base portion 151 .
  • the suction device 100 may have a susceptor 161 arranged inside the internal space 141 .
  • a blade-shaped susceptor 161 may be arranged so as to protrude from the bottom portion 143 of the accommodating portion 140 into the internal space 141 .
  • the blade-shaped susceptor 161 is inserted into the stick-shaped base material 150 so as to pierce the base part 151 of the stick-shaped base material 150 . inserted.
  • the blade-shaped susceptor 161 can be brought into thermal proximity with the aerosol source contained in the base material portion 151 .
  • Induction coil 10A and induction coil 10B may be arranged on one substrate 20 .
  • the substrate 20 on which the induction coil 10A and the induction coil 10B are arranged is doubly wound around the accommodating portion 140 .
  • the induction coil 10 is connected in series with the capacitor 13, and the RLC circuit 164 is a series resonance circuit.
  • RLC circuit 164 may be any series resonant circuit as long as it includes a configuration in which an inductance component and a capacitance component are connected in series.
  • the RLC circuit 164 may be a so-called LCC circuit that includes both a capacitance component connected in series with an inductance component and a capacitance component connected in parallel with the inductance component. Even if the RLC circuit 164 is an LCC circuit, since at least the inductance component and the capacitance component are connected in series, it is expected that the inductance and the Q value will increase and the energy efficiency will improve.
  • a series of processes by each device described in this specification may be implemented using software, hardware, or a combination of software and hardware.
  • a program that constitutes software is stored in advance in a recording medium (more specifically, a non-temporary computer-readable storage medium) provided inside or outside each device, for example.
  • a recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, a flash memory, or the like.
  • the above computer program may be distributed, for example, via a network without using a recording medium.
  • An aerosol-generating system comprising an aerosol-generating article and an aspiration device for generating an aerosol using the aerosol-generating article,
  • the aerosol-generating article has an aerosol source
  • the suction device is a container capable of containing the aerosol-generating article; a plurality of transverse induction coils for inductively heating a susceptor in thermal proximity to the aerosol-generating article contained in the container; has wherein the plurality of induction coils are summatively connected; Aerosol generation system.
  • the plurality of induction coils are arranged so that their axial directions match or substantially match each other, The aerosol generating system according to (1) above.
  • the plurality of induction coils are arranged at positions at least partially overlapping on the side surface of the accommodating portion, The aerosol generating system according to (2) above.
  • the plurality of induction coils are arranged at positions facing each other across the housing, The aerosol generating system according to (2) above.
  • an RLC circuit comprising a plurality of said induction coils is a series resonant circuit;
  • the aerosol generating system according to any one of (1) to (4) above. wherein the plurality of induction coils are connected in parallel;
  • the suction device has a thermal diffusion layer made of a non-conductor having a predetermined thermal conductivity, the heat spreading layer is positioned in thermal proximity to the induction coil;
  • the aerosol generating system according to any one of (1) to (7) above.
  • the suction device has a plurality of induction coil groups composed of a plurality of the induction coils that are additively connected, The plurality of induction coil groups are connected in parallel, The aerosol generating system according to any one of (1) to (8) above.
  • the suction device further includes a control unit that controls the operation of the plurality of induction coil groups, The control unit selects one of the induction coil groups as a supply destination of the alternating current, The aerosol generating system according to (9) above.
  • An inverter circuit for converting direct current to alternating current is connected to each of the plurality of induction coil groups,
  • the control unit operates the inverter circuit connected to the induction coil group of the power supply destination, and stops the operation of the inverter circuit connected to the induction coil group other than the power supply destination.
  • the aerosol generating system according to (10) above.
  • the induction coil is configured by winding a conductor wire on an insulator, The insulator has flexibility, the insulator and the induction coil disposed on the insulator are wound around the housing;
  • the aerosol generating system according to any one of (1) to (11) above.
  • the induction coil is configured by winding a plurality of conductors insulated from each other, The aerosol generating system according to any one of (1) to (12) above.
  • the aerosol-generating article having the susceptor;
  • the suction device comprises the susceptor, wherein the housing portion is positioned outside an interior space containing the aerosol-generating article.
  • the suction device comprises the susceptor arranged inside an interior space in which the housing portion houses the aerosol-generating article;
  • suction device 111 power supply unit 112 sensor unit 113 notification unit 114 storage unit 115 communication unit 116 control unit 140 accommodation unit 141 internal space 142 opening 143 bottom 150 stick-shaped substrate 151 substrate 152 mouthpiece 161 susceptor 162 induction heating unit 163 Inverter circuit 164 RLC circuit 169 Drive circuit 10 Induction coil 11 First terminal 12 Second terminal 13 Capacitor 19 Lead wire 20 Substrate 21 Insulating layer 30 Thermal diffusion layer

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  • General Induction Heating (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un mécanisme qui peut améliorer l'efficacité de chauffage d'un dispositif d'aspiration de type chauffage par induction. La solution selon l'invention porte sur un système de génération d'aérosol qui comprend : un article de génération d'aérosol ; et un dispositif d'aspiration qui génère un aérosol à l'aide de l'article de génération d'aérosol. L'article de génération d'aérosol présente une source d'aérosol. Le dispositif d'aspiration comprend : une unité de réception qui peut recevoir l'article de génération d'aérosol ; et une pluralité de bobines d'induction de type transversal qui réalisent un chauffage par induction d'un suscepteur qui est à proximité thermique de l'article de génération d'aérosol logé dans l'unité de réception. La pluralité de bobines d'induction sont reliées de manière additive.
PCT/JP2021/034233 2021-09-17 2021-09-17 Système de génération d'aérosol, procédé de commande, et programme WO2023042362A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001068262A (ja) * 1999-08-26 2001-03-16 Fuji Xerox Co Ltd 電磁誘導加熱装置、電磁誘導加熱装置を用いた搬送装置及び画像形成装置
JP2012149195A (ja) * 2011-01-21 2012-08-09 Panasonic Corp テープ基材、コイルおよび誘導加熱調理器
US20170360102A1 (en) * 2016-09-06 2017-12-21 Shenzhen First Union Technology Co., Ltd. Aerosol generating device
EP3295813A1 (fr) * 2016-09-14 2018-03-21 Shenzhen First Union Technology Co., Ltd. Dispositif d'atomisation et cigarette électronique le comprenant
JP2021506249A (ja) * 2017-12-21 2021-02-22 ニコベンチャーズ トレーディング リミテッド エアロゾル生成デバイス用の誘導要素のための回路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001068262A (ja) * 1999-08-26 2001-03-16 Fuji Xerox Co Ltd 電磁誘導加熱装置、電磁誘導加熱装置を用いた搬送装置及び画像形成装置
JP2012149195A (ja) * 2011-01-21 2012-08-09 Panasonic Corp テープ基材、コイルおよび誘導加熱調理器
US20170360102A1 (en) * 2016-09-06 2017-12-21 Shenzhen First Union Technology Co., Ltd. Aerosol generating device
EP3295813A1 (fr) * 2016-09-14 2018-03-21 Shenzhen First Union Technology Co., Ltd. Dispositif d'atomisation et cigarette électronique le comprenant
JP2021506249A (ja) * 2017-12-21 2021-02-22 ニコベンチャーズ トレーディング リミテッド エアロゾル生成デバイス用の誘導要素のための回路

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