EP4238430A1 - Dispositif et système d'inhalation - Google Patents

Dispositif et système d'inhalation Download PDF

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Publication number
EP4238430A1
EP4238430A1 EP21931614.8A EP21931614A EP4238430A1 EP 4238430 A1 EP4238430 A1 EP 4238430A1 EP 21931614 A EP21931614 A EP 21931614A EP 4238430 A1 EP4238430 A1 EP 4238430A1
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EP
European Patent Office
Prior art keywords
susceptor
area
substrate
inhaler device
internal space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP21931614.8A
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German (de)
English (en)
Inventor
Reijiro KAWASAKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
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Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP4238430A1 publication Critical patent/EP4238430A1/fr
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present invention relates to an inhaler device and a system.
  • an inhaler device that generates a substance to be inhaled by a user, such as an electronic tobacco and a nebulizer, is widely used.
  • an inhaler device uses a substrate including an aerosol source for generating an aerosol, a flavor source for imparting a flavor component to the generated aerosol, and the like, to generate an aerosol with the imparted flavor component.
  • the user is able to taste a flavor by inhaling the aerosol with the imparted flavor component, generated by the inhaler device.
  • An action that the user takes to inhale an aerosol is also referred to as puff or puff action below.
  • Patent Literature 1 JP 6623175 B2
  • Patent Literature 1 describes that an existing coil is used as an electromagnetic induction source but does not describe improvement in the technology of an electromagnetic induction source itself at all.
  • the present invention is contemplated in view of the above problem, and it is an object of the present invention to provide a mechanism related to an electromagnetic induction source compatible with an induction heating-type inhaler device.
  • an aspect of the present invention provides an inhaler device.
  • the inhaler device includes a container capable of accommodating a substrate containing an aerosol source and a susceptor in thermal proximity to the aerosol source in an internal space, and an electromagnetic induction source configured as a solenoid-type coil and disposed so as to surround the container.
  • a first part of the electromagnetic induction source located on a front side in a thickness direction orthogonal to a longitudinal direction of the susceptor, and a second part of the electromagnetic induction source, located on a back side in the thickness direction, are disposed in a state shifted from each other in the longitudinal direction of the susceptor such that a ratio of an area of an overlap area in which a first projection area obtained by projecting the first part perpendicularly onto a surface of the susceptor on the front side and a second projection area obtained by projecting the second part perpendicularly onto a surface of the susceptor on the back side overlap in the thickness direction to an area of each of the first projection area and the second projection area ranges from 0% to 90%.
  • a shape of the susceptor may be a sheet shape.
  • a thickness of the susceptor may range from 10 ⁇ m to 100 ⁇ m.
  • the susceptor may be made of a raw material that has ferromagnetism and of which a Curie point falls within a range of temperature that is reachable through induction heating by the electromagnetic induction source.
  • the susceptor may be made of steel use stainless (SUS) 430.
  • a distribution of the aerosol source may be different between a part of the substrate, proximate to a first non-overlap area that is an area other than the overlap area in the first projection area, or a second non-overlap area that is an area other than the overlap area in the second projection area, and a part of the substrate, proximate to the overlap area.
  • the aerosol source may be distributed by a larger amount in the part of the substrate, proximate to the first non-overlap area or the second non-overlap area, than in the part of the substrate, proximate to the overlap area.
  • a longitudinal direction of the internal space may substantially coincide with the longitudinal direction of the susceptor, and the first part and the second part may be disposed in a state shifted from each other in the longitudinal direction of the internal space such that, in a state where the susceptor is accommodated in the container in the predetermined state, a ratio of an area of the overlap area to an area of each of the first projection area and the second projection area ranges from 0% to 90%.
  • a longitudinal direction of the internal space may substantially differ from the longitudinal direction of the susceptor, and the longitudinal direction of the susceptor may be inclined with respect to the longitudinal direction of the internal space such that, in a state where the susceptor is accommodated in the container in the predetermined state, a ratio of an area of the overlap area to an area of each of the first projection area and the second projection area ranges from 0% to 90%.
  • the susceptor may be included in the substrate.
  • the container may have an opening, and the substrate may be inserted in the internal space through the opening, a mark may be applied to each of a surface of the inhaler device around the opening and a surface of the substrate, and a position of the mark applied to the surface of the inhaler device around the opening and a position of the mark applied to the surface of the substrate may coincide with each other when the susceptor is accommodated in the container in the predetermined state.
  • the container may have an opening, and the substrate may be inserted in the internal space through the opening, and each of the internal space and the substrate may have a shape allowing the substrate to be inserted into the internal space when the susceptor is accommodated in the container in the predetermined state.
  • the system includes a substrate containing an aerosol source and including a susceptor in thermal proximity to the aerosol source, and an inhaler device including a container capable of accommodating the substrate in an internal space, and an electromagnetic induction source configured as a solenoid-type coil and disposed so as to surround the container.
  • a first part of the electromagnetic induction source located on a front side in a thickness direction orthogonal to a longitudinal direction of the susceptor, and a second part of the electromagnetic induction source, located on a back side in the thickness direction, are disposed in a state shifted from each other in the longitudinal direction of the susceptor such that a ratio of an area of an overlap area in which a first projection area obtained by projecting the first part perpendicularly onto a surface of the susceptor on the front side and a second projection area obtained by projecting the second part perpendicularly onto a surface of the susceptor on the back side overlap in the thickness direction to an area of each of the first projection area and the second projection area ranges from 0% to 90%.
  • a mechanism related to an electromagnetic induction source compatible with an induction heating-type inhaler device is provided.
  • An inhaler device generates an aerosol by heating a substrate containing an aerosol source by means of induction heating (IH).
  • IH induction heating
  • FIG. 1 is a schematic diagram that schematically illustrates a configuration example of an inhaler device.
  • an inhaler device 100 according to the present configuration example includes a power supply 111, a sensor 112, a notifier 113, a memory 114, a communicator 115, a controller 116, a susceptor 161, an electromagnetic induction source 162, and a holder 140.
  • a user inhales in a state where a stick substrate 150 is held by the holder 140.
  • structural elements will be sequentially described.
  • the power supply 111 stores electric power.
  • the power supply 111 supplies electric power to the structural elements of the inhaler device 100.
  • the power supply 111 can be a rechargeable battery, such as a lithium ion secondary battery.
  • the power supply 111 may be charged when connected to an external power supply with a universal serial bus (USB) cable or the like.
  • USB universal serial bus
  • the power supply 111 may be charged with a wireless power transmission technology in a state not connected to a power transmitting device.
  • only the power supply 111 may be allowed to be removed from the inhaler device 100 or may be allowed to be replaced with a new power supply 111.
  • the sensor 112 detects various items of information regarding the inhaler device 100.
  • the sensor 112 outputs the detected information to the controller 116.
  • the sensor 112 is a pressure sensor, such as a capacitor microphone, a flow sensor, or a temperature sensor.
  • the sensor 112 detects a numeric value resulting from user's inhalation, the sensor 112 outputs, to the controller 116, information indicating that the user has inhaled
  • the sensor 112 is an input device that receives information input by the user, such as a button and a switch.
  • the sensor 112 can include a button for instructions to start or stop generating an aerosol.
  • the sensor 112 outputs, to the controller 116, information input by the user.
  • the senor 112 is a temperature sensor that detects the temperature of the susceptor 161.
  • the temperature sensor detects the temperature of the susceptor 161 in accordance with an electric resistance value of the electromagnetic induction source 162.
  • the sensor 112 may detect the temperature of the stick substrate 150 held by the holder 140 in accordance with the temperature of the susceptors 161.
  • the notifier 113 notifies the user of information.
  • the notifier 113 is a light-emitting device, such as a light emitting diode (LED).
  • the notifier 113 emits light in a different pattern of light, for example, when the state of the power supply 111 is a charging required state, when the power supply 111 is in being charged, or when there is an abnormality in the inhaler device 100.
  • the pattern of light here is a concept including color, the timing to turn on or off, and the like.
  • the notifier 113 may be a display device that displays an image, a sound output device that outputs sound, or a vibration device that vibrates, in addition to or instead of the light-emitting device.
  • the notifier 113 may notify information indicating that the user is allowed to inhale.
  • the information indicating that the user is allowed to inhale is notified when the temperature of the stick substrate 150 heated by electromagnetic induction reaches a predetermined temperature.
  • the memory 114 stores various items of information for the operation of the inhaler device 100.
  • the memory 114 is, for example, a non-volatile storage medium, such as a flash memory.
  • An example of the pieces of information stored in the memory 114 is information regarding an operating system (OS) of the inhaler device 100, such as the content of control over various structural elements by the controller 116.
  • Another example of the items of information stored in the memory 114 is information regarding user's inhalation, such as the number of times of inhalation, inhalation time, and an accumulated inhalation time period.
  • the communicator 115 is a communication interface for transmitting and receiving information between the inhaler device 100 and another device.
  • the communicator 115 performs communication that conforms with any wired or wireless communication standard.
  • a wireless local area network (LAN), a wired LAN, Wi-Fi (registered trademark), Bluetooth (registered trademark), or the like can be adopted as such a communication standard.
  • the communicator 115 transmits information regarding user's inhalation to a smartphone in order to display the information regarding user's inhalation on the smartphone.
  • the communicator 115 receives new information on the OS from a server in order to update the information on the OS, stored in the memory 114.
  • the controller 116 functions as an arithmetic processing unit and a control unit and controls the overall operations in the inhaler device 100 in accordance with various programs.
  • the controller 116 includes an electronic circuit, such as a central processing unit (CPU) and a microprocessor.
  • the controller 116 may further include a read only memory (ROM) that stores programs and arithmetic parameters to be used, and a random access memory (RAM) that temporarily stores variable parameters as needed.
  • ROM read only memory
  • RAM random access memory
  • Feeding of electric power from the power supply 111 to another structural element, charging of the power supply 111, detection of information by the sensor 112, notification of information by the notifier 113, storing and reading of information by the memory 114, and transmitting and receiving of information by the communicator 115 each are an example of the pieces of processing to be controlled by the controller 116.
  • Other pieces of processing to be executed by the inhaler device 100, such as input of information to each structural element and processing based on information output from each structural element, are controlled by the controller 116.
  • the holder 140 has an internal space 141.
  • the holder 140 holds the stick substrate 150 while accommodating part of the stick substrate 150 in the internal space 141.
  • the holder 140 has an opening 142 that allows the internal space 141 to communicate with outside.
  • the holder 140 holds the stick substrate 150 that is inserted into the internal space 141 through the opening 142.
  • the holder 140 is a tubular body having the opening 142 and a bottom 143 at the ends, and defines the columnar internal space 141.
  • the holder 140 can be formed such that the inside diameter is smaller than the outside diameter of the stick substrate 150 in at least part of the tubular body in the height direction of the tubular body.
  • the holder 140 can hold the stick substrate 150 such that the stick substrate 150 inserted in the internal space 141 is pressed from the outer circumference.
  • the holder 140 also has the function to define a flow path for air passing through the stick substrate 150.
  • An air inlet hole that is an inlet for air into the flow path is disposed at, for example, the bottom 143.
  • an air outlet hole that is an outlet for air from the flow path is the opening 142.
  • the stick substrate 150 is a stick member.
  • the stick substrate 150 includes a substrate 151 and an inhalation port 152.
  • the substrate 151 includes an aerosol source.
  • the aerosol source When the aerosol source is heated, the aerosol source is atomized to generate an aerosol.
  • the aerosol source may be, for example, a substance derived from tobacco, such as a processed substance obtained by forming shredded tobacco or tobacco raw material into a granular form, a sheet form, or a powder form.
  • the aerosol source may contain a substance not derived from tobacco and made from a plant other than tobacco (for example, mint, a herb, or the like).
  • the aerosol source may contain a flavor component, such as menthol.
  • the aerosol source may contain a medicine for a patient to inhale.
  • the aerosol source is not limited to a solid and may be, for example, a liquid, such as polyhydric alcohol and water.
  • a liquid such as polyhydric alcohol and water.
  • the polyhydric alcohol include glycerine and propylene glycol.
  • At least part of the substrate 151 is accommodated in the internal space 141 of the holder 140 in a state where the stick substrate 150 is held by the holder 140.
  • the inhalation port 152 is a member to be held in a mouth of the user during inhalation. At least part of the inhalation port 152 protrudes from the opening 142 in a state where the stick substrate 150 is held by the holder 140.
  • the stick substrate 150 further includes the susceptor 161.
  • the susceptor 161 produces heat by electromagnetic induction.
  • the susceptor 161 is made of a conductive raw material, such as a metal.
  • the susceptor 161 is a metal sheet.
  • the susceptor 161 is disposed in proximity to the aerosol source. In the example illustrated in FIG. 1 , the susceptor 161 is included in the substrate 151 of the stick substrate 150.
  • the susceptor 161 is disposed in thermal proximity to the aerosol source.
  • the state where the susceptor 161 is in thermal proximity to the aerosol source means that the susceptor 161 is disposed at a position where heat generated at the susceptor 161 is transferred to the aerosol source.
  • the susceptor 161 is included in the substrate 151 together with the aerosol source and surrounded by the aerosol source. With this configuration, heat generated from the susceptor 161 can be efficiently used to heat the aerosol source.
  • the susceptor 161 may be untouchable from outside of the stick substrate 150.
  • the susceptor 161 may be disposed so as to be embedded in the stick substrate 150.
  • the electromagnetic induction source 162 causes the susceptor 161 to produce heat by electromagnetic induction.
  • the electromagnetic induction source 162 is, for example, a coiled conductive wire wound around the outer circumference of the holder 140.
  • the electromagnetic induction source 162 When the electromagnetic induction source 162 is supplied with alternating current from the power supply 111, the electromagnetic induction source 162 generates a magnetic field.
  • the electromagnetic induction source 162 is disposed at a position where the internal space 141 of the holder 140 overlaps the generated magnetic field. Thus, when the magnetic field is generated in a state where the stick substrate 150 is held by the holder 140, eddy current is generated in the susceptor 161, and Joule heat is generated.
  • the aerosol source included in the stick substrate 150 is heated and atomized by the Joule heat to generate an aerosol.
  • electric power may be supplied to generate an aerosol.
  • the temperature of the stick substrate 150 inductively heated by the susceptor 161 and the electromagnetic induction source 162 reaches a predetermined temperature, the user is allowed to inhale. After that, when the sensor 112 detects that the predetermined user input is performed, supply of electric power may be stopped. In another example, in a period during which the sensor 112 detects that the user has inhaled, electric power may be supplied to generate an aerosol.
  • a combination of the inhaler device 100 with the stick substrate 150 may be regarded as one system.
  • Induction heating is a process of causing a varying magnetic field to enter a conductive physical object to heat the physical object.
  • a magnetic field generator that generates a varying magnetic field and a conductive heated object that is heated when exposed to a varying magnetic field relate to induction heating.
  • An example of the varying magnetic field is an alternating magnetic field.
  • the electromagnetic induction source 162 illustrated in FIG. 1 is an example of the magnetic field generator.
  • the susceptor 161 illustrated in FIG. 1 is an example of the heated object.
  • the heated object may have magnetism.
  • the heated object is further heated by magnetic hysteresis heating.
  • Magnetic hysteresis heating is a process of causing a varying magnetic field to enter a magnetic object to heat the object.
  • magnetic dipoles contained in the magnetic substance are aligned along the magnetic field. Therefore, when a varying magnetic field enters a magnetic substance, the orientations of the magnetic dipoles change with the varying magnetic field applied. With such reorientation of the magnetic dipoles, heat is generated in the magnetic substance, and the heated object is heated.
  • Magnetic hysteresis heating typically occurs at a temperature lower than or equal to a Curie point and does not occur at a temperature exceeding the Curie point.
  • a Curie point is a temperature at which a magnetic substance loses its magnetic properties. For example, when the temperature of a heated object having a ferromagnetism at a temperature lower than or equal to a Curie point exceeds the Curie point, a reversible phase transition from ferromagnetism to paramagnetism occurs in the magnetism of the heated object. When the temperature of the heated object exceeds the Curie point, magnetic hysteresis heating does not occur any more, so the rate of increase in temperature reduces.
  • the heated object is desirably made of a conductive material.
  • the heated object is further desirably made of a material having ferromagnetism. This is because, in the latter case, heating efficiency can be increased by a combination of resistance heating and magnetic hysteresis heating.
  • the heated object is made of one or more raw materials selected from a raw material group consisting of aluminum, iron, nickel, cobalt, conductive carbon, copper, stainless steel, and the like.
  • induction heating directly heats the susceptor 161 included in the stick substrate 150, it is possible to efficiently heat the substrate as compared to when the stick substrate 150 is heated from the outer circumference or the like with an external heat source.
  • the external heat source is inevitably higher in temperature than the stick substrate 150.
  • the electromagnetic induction source 162 does not become higher in temperature than the stick substrate 150. Therefore, the temperature of the inhaler device 100 can be maintained at low temperatures as compared to when an external heat source is used, so it is a great benefit in relation to user's safety.
  • the electromagnetic induction source 162 generates a varying magnetic field by using electric power supplied from the power supply 111.
  • the power supply 111 may be a direct current (DC) power supply.
  • the power supply 111 supplies alternating-current power to the electromagnetic induction source 162 via a DC/AC (alternate current) inverter.
  • the electromagnetic induction source 162 can generate an alternating magnetic field.
  • FIG. 2 is a view that illustrates an example of a physical configuration around the holder 140 according to the present embodiment.
  • FIG. 3 is a view that illustrates an example of a physical configuration around the holder 140 according to the present embodiment in a state where the stick substrate 150 is accommodated in the holder 140 in a predetermined state.
  • FIG. 4 is a view that illustrates an example of a cross section taken along the line A-A in FIG. 3 .
  • FIG. 5 is a view that illustrates an example of a cross section taken along the line B-B in FIG. 3 .
  • the holder 140 is an example of a container capable of accommodating the stick substrate 150 and the susceptor 161 in the internal space 141.
  • the electromagnetic induction source 162 is configured as a solenoid-type coil and disposed so as to surround the holder 140.
  • the solenoid-type coil here means a coil in which a conductive material, such as copper, is wound with one or more turns, and a winding shape may be a rectangular shape or a circular shape and is not limited.
  • the susceptor 161 is formed in a sheet shape.
  • the sheet plane of the susceptor 161 expands in a longitudinal direction and in a widthwise direction and is formed so as to define a front and a back in a thickness direction.
  • the longitudinal direction, the widthwise direction, and the thickness direction of the susceptor 161 are orthogonal to one another.
  • the susceptor 161 is made of a raw material that has ferromagnetism and of which a Curie point falls within a range of temperature that is reachable through induction heating by the electromagnetic induction source 162.
  • the susceptor 161 may be made of steel use stainless (SUS) 430.
  • SUS steel use stainless
  • the Curie point of SUS 430 that is a component of the susceptor 161 falls within a range of temperature that the susceptor 161 is reachable through induction heating by the electromagnetic induction source 162.
  • the range of temperature that the susceptor 161 is reachable through induction heating by the electromagnetic induction source 162 ranges from 0°C to 350°C in an example.
  • the electromagnetic induction source 162 generates a varying magnetic field in the space surrounded by the coil, that is, the internal space 141, by using electric power supplied from the power supply 111.
  • the susceptor 161 is surrounded by the coil. Therefore, the varying magnetic field generated from the electromagnetic induction source 162 enters the susceptor 161 to generate eddy current.
  • eddy current in a direction opposite to a direction in which current flows through the electromagnetic induction source 162 flows in the cross section of the susceptor 161.
  • ⁇ current penetration depth [mm].
  • ⁇ specific resistance [ ⁇ m].
  • ⁇ r relative permeability.
  • f heating frequency [Hz].
  • a Z-axis direction illustrated in FIGS. 2 to 5 is the longitudinal direction of the internal space 141 and is a direction in which the stick substrate 150 is inserted and removed.
  • a direction in which the stick substrate 150 is removed is positive and a direction in which the stick substrate 150 is inserted is negative.
  • part of the electromagnetic induction source 162 located on the front side of the susceptor 161 and part of the electromagnetic induction source 162 located on the back side of the susceptor 161 are disposed in a state shifted in the Z-axis direction across the holder 140.
  • An X-axis direction is a direction in which a shift of the electromagnetic induction source 162 in the Z-axis direction across the holder 140 is largest.
  • an X-axis positive direction is also referred to as front side
  • an X-axis negative direction is also referred to as back side.
  • a Y-axis direction is a direction orthogonal to the X-axis direction and the Z-axis direction.
  • the Y-axis direction is a direction in which a shift of the electromagnetic induction source 162 in the Z-axis direction across the holder 140 is smallest.
  • the longitudinal direction of the susceptor 161 substantially coincides with the Z-axis direction
  • the widthwise direction of the susceptor 161 substantially coincides with the Y-axis direction
  • the thickness direction of the susceptor 161 substantially coincides with the X-axis direction.
  • the distal end of the stick substrate 150 reaches the bottom 143 of the holder 140.
  • This state is a state where the susceptor 161 (that is, the stick substrate 150 including the susceptor 161) is accommodated in (held by) the holder 140 in the predetermined state. It is assumed that the phrase "substantially coincides" includes not only complete coincidence but also a state shifted by smaller than a few degrees.
  • a first part 162A and a second part 162B of the electromagnetic induction source 162 are disposed in a state shifted from each other in the longitudinal direction of the susceptor 161 such that the ratio of the area of an overlap area Y to the area of each of a first projection area X A and a second projection area X B ranges from 0% to 90%.
  • the electromagnetic induction source 162 is disposed such that each of Y/X A ⁇ 100% and Y/X B ⁇ 100% ranges from 0% to 90%, that is, the first part 162A and the second part 162B are in a state shifted from each other in the Z-axis direction. With this configuration, as will be described below, the susceptor 161 can be efficiently heated.
  • the first projection area X A is an area obtained by projecting the first part 162A of the electromagnetic induction source 162, located on the front side of the susceptor 161, perpendicularly onto the surface 161A of the susceptor 161 on the front side.
  • the first projection area X A is an area surrounded by a line obtained by projecting both ends of the first part 162A in the Z-axis direction perpendicularly onto the surface 161A of the susceptor 161 on the front side.
  • the first projection area X A includes not only an area obtained by actually projecting a coil but also an area placed between parts of the coil.
  • the second projection area X B is an area obtained by projecting the second part 162B of the electromagnetic induction source 162, located on the back side of the susceptor 161, perpendicularly onto the surface 161B of the susceptor 161 on the back side.
  • the second projection area X B is an area surrounded by a line obtained by projecting both ends of the second part 162B in the Z-axis direction perpendicularly onto the surface 161B of the susceptor 161 on the back side.
  • the second projection area X B includes not only an area obtained by actually projecting a coil but also an area placed between parts of the coil.
  • the overlap area Y is an area in which the first projection area X A and the second projection area X B overlap in the thickness direction.
  • first projection area X A an area other than the overlap area Y is also referred to as first non-overlap area Z A .
  • second non-overlap area Z B an area other than the overlap area Y is also referred to as second non-overlap area Z B .
  • the electromagnetic induction source 162 is present on both front and back sides of the susceptor 161. Therefore, on both front and back sides of the susceptor 161, eddy current 20 flows in a direction opposite to a direction in which current 10 flows through the electromagnetic induction source 162. Therefore, in the overlap area Y, eddy currents respectively flowing on the front and back sides of the susceptor 161 can interfere to cancel out each other. As a result, current is hard to flow in the cross section of the susceptor 161, and heating is impaired.
  • the electromagnetic induction source 162 is present only on one of the front and back sides of the susceptor 161.
  • eddy current 20 flows in a direction opposite to a direction in which current 10 flows through the electromagnetic induction source 162. Therefore, in these areas, eddy currents on the front and back sides do not interfere with each other, so the susceptor 161 is suitably heated without impairment.
  • the specific resistance ⁇ of a metal increases with an increase in temperature.
  • the current penetration depth ⁇ increases with an increase in specific resistance ⁇ .
  • the relative permeability ⁇ r reduces as the temperature increases and approaches a Curie point, and the relative permeability ⁇ r becomes one when the temperature exceeds the Curie point. Therefore, through the expression (1), the current penetration depth ⁇ increases as the relative permeability ⁇ r reduces. In this way, the current penetration depth ⁇ of the eddy current 20 increases with an increase in temperature. Since interference of the eddy current 20 flowing on each of the front and back sides of the susceptor 161 increases as the current penetration depth ⁇ increases, it is difficult for the susceptor 161 having a thin thickness to heat.
  • parts of the electromagnetic induction source 162 respectively located on the front and back sides of the susceptor 161 are disposed in a state shifted from each other in the longitudinal direction of the susceptor 161.
  • interference of eddy current flowing through each of the front and back sides of the susceptor 161 is reduced, so efficient heating can be implemented.
  • the ratio of the area of the overlap area Y to the area of each of the first projection area X A and the second projection area X B is desirably smaller the better for the above-described reason.
  • the ratio of the area of the overlap area Y to the area of each of the first projection area X A and the second projection area X B ranges from 0% to 60%.
  • the current penetration depth ⁇ reaches 10 [ ⁇ m] to 200 [ ⁇ m] within the range of temperature that the susceptor 161 is reachable through induction heating by the electromagnetic induction source 162.
  • the thickness of the susceptor 161 may range from 10 [ ⁇ m] to 100 [ ⁇ m].
  • a distribution of an aerosol source may be different between a part of the stick substrate 150, proximate to the first non-overlap area Z A or the second non-overlap area Z B , and a part of the stick substrate 150, proximate to the overlap area Y.
  • the temperature more easily increases in the first non-overlap area Z A and the second non-overlap area Z B than in the overlap area Y, and this tendency is further remarkable in a range over the Curie point.
  • a part of the stick substrate 150, proximate to the first non-overlap area Z A or the second non-overlap area Z B more easily increases in temperature, while a part of the stick substrate 150, proximate to the overlap area Y, is hard to increase in temperature.
  • proximity means to be located at the same position or a close position in the longitudinal direction of the stick substrate 150.
  • a larger amount of aerosol source may be distributed to a part of the stick substrate 150, proximate to the first non-overlap area Z A or the second non-overlap area Z B , than to a part of the stick substrate 150, proximate to the overlap area Y.
  • a larger amount of aerosol source is distributed to a part of the stick substrate 150, proximate to the first non-overlap area Z A or the second non-overlap area Z B , that is, a part of the stick substrate 150, that more easily increases in temperature, it is possible to generate a large amount of aerosol.
  • parts of the electromagnetic induction source 162 respectively located on the front and back sides of the susceptor 161 (that is, located on the positive side and the negative side in the Y-axis direction), are disposed in a state where parts of the electromagnetic induction source 162 have substantially no shift in the Z-axis direction across the holder 140. Therefore, the ratio of the area of the overlap area Y to the area of each of the first projection area X A and the second projection area X B is substantially 100%, so it can be difficult to perform efficient heating.
  • FIG. 6 is a view for illustrating a first modification.
  • FIG. 6 illustrates an external appearance of the inhaler device 100 and the stick substrate 150 in a state where the stick substrate 150 is accommodated in the holder 140 in the predetermined state.
  • marks 31, 32 may be respectively applied to the surface of the inhaler device 100 around the opening 142 and the surface of the stick substrate 150.
  • the position of the mark 31 applied to the surface of the inhaler device 100 around the opening 142 and the position of the mark 32 applied to the surface of the stick substrate 150 may coincide with each other when the stick substrate 150 is accommodated in the holder 140 in the predetermined state.
  • the user is prompted to insert the stick substrate 150 into the internal space 141 such that, as illustrated in FIG.
  • the mark 31 that is an arrow and the mark 32 that is an arrow are opposed to each other.
  • the stick substrate 150 is accommodated in the holder 140 in the predetermined state as illustrated in FIGS. 3 to 5 .
  • the user is able to easily implement a state where the stick substrate 150 is accommodated in the holder 140 in the predetermined state by just adjusting the position of the mark 31 with the position of the mark 32 and inserting the stick substrate 150 into the internal space 141.
  • FIG. 7 is a view for illustrating another example of the first modification.
  • FIG. 7 illustrates a cross section around the holder 140 in a state where the stick substrate 150 is accommodated in the holder 140 in a predetermined state.
  • the internal space 141 and the stick substrate 150 may have such a shape that the stick substrate 150 can be inserted in the internal space 141 when the stick substrate 150 is accommodated in the holder 140 in the predetermined state.
  • the sectional shape of each of the internal space 141 and the stick substrate 150 is a rectangular shape having long sides and short sides, and the stick substrate 150 is allowed to be inserted only in a state where the long sides and the short sides of the respective sectional shapes coincide with each other.
  • the short sides of the sectional shape of the internal space 141 are formed in the X-axis direction
  • the long sides of the sectional shape of the internal space 141 are formed in the Y-axis direction.
  • the susceptor 161 is disposed in the stick substrate 150 such that the thickness direction of the susceptor 161 is parallel to the widthwise direction of the cross section of the stick substrate 150. Therefore, as illustrated in FIG. 7 , when the stick substrate 150 is inserted in the internal space 141, the thickness direction of the susceptor 161 substantially coincides with the X-axis direction. In other words, the stick substrate 150 is accommodated in the holder 140 in a predetermined state.
  • the user is able to easily implement a state where the stick substrate 150 is accommodated in the holder 140 in a predetermined state by just inserting the stick substrate 150 into the internal space 141.
  • each of the holder 140 and the stick substrate 150 is not limited to a rectangular shape illustrated in FIG. 7 and may be, for example, an elliptical shape or the like.
  • the present invention is not limited to this example.
  • the longitudinal direction of the internal space 141 and the longitudinal direction of the susceptor 161 may be substantially different from each other.
  • the phrase "substantially different" means a state shifted by larger than or equal to a few degrees. This example will be described with reference to FIG. 8 .
  • FIG. 8 is a view for illustrating a second modification.
  • FIG. 8 illustrates a cross section around the holder 140 in a state where the stick substrate 150 is accommodated in the holder 140 in a predetermined state.
  • the longitudinal direction of the susceptor 161 may be inclined with respect to the longitudinal direction of the stick substrate 150.
  • the longitudinal direction of the susceptor 161 may be inclined with respect to the longitudinal direction of the internal space 141 (that is, the Z-axis direction).
  • the longitudinal direction of the susceptor 161 may be inclined with respect to the longitudinal direction of the internal space 141 such that the ratio of the area of the overlap area Y to the area of each of the first projection area X A and the second projection area X B ranges from 0% to 90%.
  • parts of the electromagnetic induction source 162, respectively located on the front and back sides of the susceptor 161 are disposed in a state shifted from each other in the longitudinal direction of the susceptor 161.
  • interference of eddy current flowing through each of the front and back sides of the susceptor 161 is reduced, so efficient heating can be implemented.
  • the predetermined state in the present modification means a state where the widthwise direction of the susceptor 161 substantially coincides with the Y-axis direction and the distal end of the stick substrate 150 reaches the bottom 143 of the holder 140.
  • the susceptor 161 has a sheet shape and the sectional shape is a rectangular shape
  • the present invention is not limited to this example.
  • the sectional shape of the susceptor 161 may be any shape, such as a rounded corner rectangular shape, a square shape, a circular shape, and an elliptical shape.
  • the surface of the susceptor 161 may be flat or may change like waving or the like.
  • the susceptor 161 can be disposed at any position at which the susceptor 161 is in thermal proximity to the aerosol source.
  • the susceptor 161 may be formed in a blade shape and disposed so as to protrude from the bottom 143 of the holder 140 into the internal space 141.
  • the stick substrate 150 is inserted into the holder 140, the stick substrate 150 is inserted such that the blade-shaped susceptor 161 sticks into the substrate 151 from an end of the stick substrate 150 in an insertion direction.
  • the susceptor 161 is disposed in the internal space 141 such that the holder 140 accommodates the susceptor 161 constantly in a predetermined state.

Landscapes

  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
EP21931614.8A 2021-03-19 2021-03-19 Dispositif et système d'inhalation Withdrawn EP4238430A1 (fr)

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PCT/JP2021/011471 WO2022195868A1 (fr) 2021-03-19 2021-03-19 Dispositif et système d'inhalation

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EP4238430A1 true EP4238430A1 (fr) 2023-09-06

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EP (1) EP4238430A1 (fr)
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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3031555A (en) * 1959-07-15 1962-04-24 Magnethermic Corp Induction heating
JPS5141233Y2 (fr) * 1971-11-13 1976-10-07
JP4153895B2 (ja) * 2003-12-25 2008-09-24 新日本製鐵株式会社 金属帯板の誘導加熱装置および誘導加熱方法
TWI692274B (zh) 2014-05-21 2020-04-21 瑞士商菲利浦莫里斯製品股份有限公司 用於加熱氣溶膠形成基材之感應加熱裝置及操作感應加熱系統之方法
US20170055582A1 (en) * 2015-08-31 2017-03-02 British American Tobacco (Investments) Limited Article for use with apparatus for heating smokable material
GB201805256D0 (en) * 2018-03-29 2018-05-16 Nicoventures Trading Ltd Aerosol provision system
CN112384085B (zh) * 2018-07-26 2022-10-28 菲利普莫里斯生产公司 用于形成气溶胶的制品
WO2020064686A1 (fr) * 2018-09-25 2020-04-02 Philip Morris Products S.A. Ensemble chauffant et procédé de chauffage par induction d'un substrat de formation d'aérosol
US20200154785A1 (en) * 2018-11-20 2020-05-21 R.J. Reynolds Tobacco Company Overwrap material containing aerosol former for aerosol source member

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JPWO2022195868A1 (fr) 2022-09-22

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