EP4287768A1 - Elektromagnetische heizspule, heizanordnung und elektronische zerstäubungsvorrichtung - Google Patents

Elektromagnetische heizspule, heizanordnung und elektronische zerstäubungsvorrichtung Download PDF

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Publication number
EP4287768A1
EP4287768A1 EP23171464.3A EP23171464A EP4287768A1 EP 4287768 A1 EP4287768 A1 EP 4287768A1 EP 23171464 A EP23171464 A EP 23171464A EP 4287768 A1 EP4287768 A1 EP 4287768A1
Authority
EP
European Patent Office
Prior art keywords
heating coil
electromagnetic heating
wire bundle
size
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23171464.3A
Other languages
English (en)
French (fr)
Inventor
Jichang FAN
Baomin YANG
Yongjie LUO
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.)
Shenzhen Smoore Technology Ltd
Original Assignee
Shenzhen Smoore Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Smoore Technology Ltd filed Critical Shenzhen Smoore Technology Ltd
Publication of EP4287768A1 publication Critical patent/EP4287768A1/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • 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 application relates to the field of atomization technology, and particularly to electromagnetic heating coils, heating assemblies, and electronic atomizing devices.
  • An aerosol is a colloidal dispersion system formed by dispersing and suspending small solid or liquid particles in a gas medium.
  • the aerosol can be absorbed by the human body through the respiratory system, providing users with a new alternative absorption method.
  • an electronic atomizing device that can generate aerosols by heating herbal or ointment aerosol-generating substrates can be used in different fields to deliver inhalable aerosols to the users, replacing conventional product forms and absorption methods.
  • the electronic atomizing device heats an aerosol-generating substrate through a heating assembly to generate an aerosol for the user to inhale.
  • the heating assembly includes an electromagnetic heating coil and a heat-generating body.
  • a magnetic field is generated by the electromagnetic heating coil conducting an electric current.
  • the temperature of the heat-generating body located in the magnetic field generated by the electromagnetic heating coil is increased.
  • the aerosol-generating substrate is in contact with the heat-generating body, and thus heated and atomized by the heat-generating body.
  • the electromagnetic heating coil is usually composed of helically wound conducting wires.
  • the size of the conventional helical coil in the radial direction is large, so that the size of the entire electronic atomizing device in the radial direction is large, which is not conducive to the miniaturization of the electronic atomizing device.
  • An electromagnetic heating coil which is adapted to be used in an electronic atomizing device includes at least one wire bundle helically wound about an axis. In an extending direction of the axis, the electromagnetic heating coil includes at least one turn. Each wire bundle includes at least two conducting wires. The at least one wire bundle has a first size in the extending direction of the axis and a second size in a first direction perpendicular to the extending direction of the axis. The first size is greater than the second size.
  • a cross-sectional shape of the at least one wire bundle is a rectangle or an ellipse.
  • the each wire bundle includes 15 to 300 conducting wires, and a diameter of each conducting wire is 0.02 mm to 0.5 mm.
  • the electromagnetic heating coil includes one to three wire bundles, each of which includes 100 conducting wires, and a diameter of each conducting wire is 0.1 mm.
  • a heating assembly includes a heat-generating body and the above-described electromagnetic heating coil.
  • the electromagnetic heating coil is sleeved outside the heat-generating body.
  • the heat-generating body is provided with an accommodating cavity, and the heat-generating body defines an opening that is in communication with the accommodating cavity. The opening is disposed at one end of the accommodating cavity in the extending direction of the axis.
  • the heating assembly further includes a mounting frame.
  • the electromagnetic heating coil surrounds the mounting frame.
  • the heat-generating body is disposed inside the mounting frame and is at least partially opposite to the electromagnetic heating coil in the first direction.
  • the heating assembly further includes a magnetic shield, and the magnetic shield is arranged outside the electromagnetic heating coil.
  • an operating current frequency of the electromagnetic heating coil is 20 KHz to 1 MHz.
  • the operating current frequency of the electromagnetic heating coil is 100 KHz to 600 KHz.
  • An electronic atomizing device includes the heating assembly.
  • the size of the at least one wire bundle in the radial direction is smaller than the size of the at least one wire bundle in the axial direction.
  • the size of the electromagnetic heating coil of the present application in the radial direction is reduced, thereby reducing the size of the electronic atomizing device in the radial direction, which is beneficial to the miniaturization of the electronic atomizing device.
  • 100 electronic atomizing device; 200, heating assembly; 300, aerosol-generating substrate; 10, heat-generating body; 11, accommodating cavity; 12, opening; 20, electromagnetic heating coil; 21, turn; H, first size; W, second size; 30, mounting frame; 40, magnetic shield.
  • first and second are used merely as labels to distinguish one element having a certain name from another element having the same name, and cannot be understood as indicating or implying any priority, precedence, or order of one element over another, or indicating the quantity of the element. Therefore, the element modified by “first” or “second” may explicitly or implicitly includes at least one of the elements. In the description of the present disclosure, "a plurality of” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms “installed”, “connected”, “coupled”, “fixed” and other terms should be interpreted broadly.
  • an element when being referred to as being “installed”, “connected”, “coupled”, “fixed” to another element, unless otherwise specifically defined, may be fixedly connected, detachably connected, or integrated to the other element, may be mechanically connected or electrically connected to the other element, and may be directly connected to the other element or connected to the other element via an intermediate element.
  • an element when being referred to as being located “on” or “under” another element, may be in direct contact with the other element or contact the other element via an intermediate element.
  • the element when being referred to as being located “on”, “above”, “over” another element, may be located right above or obliquely above the other element, or merely located at a horizontal level higher than the other element; the element, when being referred to as being located “under”, “below”, “beneath” another element, may be located right below or obliquely below the other element, or merely located at a horizontal level lower than the other element.
  • an element when being referred to as being “fixed” or “mounted” to another element, may be directly fixed or mounted to the other element or via an intermediate element.
  • Such terms as “vertical”, “horizontal”, “up”, “down”, “left”, “right” and the like used herein are for illustrative purposes only and are not meant to be the only ways for implementing the present disclosure.
  • the radial size of the conventional electromagnetic heating coil is relatively large, resulting in a relatively large radial size of the entire electronic atomizing device, which is not conducive to the miniaturization of the electronic atomizing device.
  • the heating assembly of the electronic atomizing device using electromagnetic heating includes an electromagnetic heating coil and a heat-generating body, and the electromagnetic heating coil is sleeved outside the heat-generating body and helically wound about the axis direction.
  • the cross-sectional shape of the conducting wires is circular, so that the size of the electromagnetic heating coil in the radial direction will be relatively large, resulting in relatively large size of the entire electronic atomizing device in the radial direction, which is not conducive to the miniaturization of the electronic atomizing device.
  • FIG. 1 is an axonometric view of an electronic atomizing device 100 provided by an embodiment of the present application.
  • the present application provides an electronic atomizing device 100, which can be used for heating and atomizing an aerosol-generating substrate 300 which is a liquid, solid, or ointment of flowers, leaves, herbs, or synthetics.
  • FIG. 2 is a cross-sectional view of the electronic atomizing device 100 shown in FIG. 1
  • FIG. 3 is a cross-sectional view of a heating assembly 200 of the electronic atomizing device 100 shown in FIG. 1
  • the electronic atomizing device 100 includes a heating assembly 200.
  • the heating assembly 200 includes a heat-generating body 10 and an electromagnetic heating coil 20 sleeved outside the heat-generating body 10.
  • the electromagnetic heating coil 20 is adapted to conduct an electric current thereby generating a magnetic field.
  • the heat-generating body 10 is disposed in the magnetic field generated by the electromagnetic heating coil 20, thereby generating heat.
  • the heat-generating body 10 is configured to heat the aerosol-generating substrate 300.
  • the heat-generating body 10 is provided with an accommodating cavity 11.
  • the heat-generating body 10 defines an opening 12 that is in communication with the accommodating cavity 11.
  • An aerosol-generating substrate 300 can be accommodated in the accommodating cavity 11 through the opening 12.
  • the electromagnetic heating coil 20 is adapted to conduct an electric current to generate a magnetic field, and the heat-generating body 10 is disposed in the magnetic field to generate heat. Since the aerosol-generating substrate 300 is accommodated in the accommodating cavity 11, at this time, the heat-generating body 10 transfers heat to the aerosol-generating substrate 300, and the temperature of the aerosol-generating substrate 300 rises and the aerosol-generating substrate 300 is atomized to form an aerosol.
  • the electromagnetic heating coil 20 is at least one wire bundle helically wound about an axis.
  • the opening 12 is disposed at one end of the accommodating cavity 11 in the extending direction of the axis and thus at one end of the heat-generating body 10 in the extending direction of the axis.
  • Each wire bundle includes at least two strands of conducting wires, i.e., each wire bundle incudes at least two conducting wires.
  • Each wire bundle is formed by twisting the at least two conducting wires (two strands of conducting wires) together.
  • FIG. 4 is a cross-sectional view of the electromagnetic heating coil 20 of the heating assembly 200 shown in FIG. 3 .
  • the electromagnetic heating coil 20 in the extending direction of the axis, includes at least one turn 21. That is to say, in the axial direction of the electromagnetic heating coil 20, the electromagnetic heating coil 20 includes at least one turn 21.
  • the at least one wire bundle has a first size H in the extending direction of the axis and a second size W in a first direction (i.e., a radial direction) perpendicular to the extending direction of the axis.
  • the first size H is greater than the second size W.
  • the size of the at least one wire bundle in the radial direction is smaller than the size of the at least one wire bundle in the axial direction.
  • the electromagnetic heating coil 20 has the following advantages:
  • the electromagnetic heating coil 20 is formed by at least one wire bundle helically wound about the axis, and each wire bundle includes at least two conducting wires.
  • the electromagnetic heating coil is formed by helically wound flat metal strips, the AC resistance of the electromagnetic heating coil 20 under a high-frequency alternating current can be reduced, and the energy loss of the electronic atomizing device 100 can be reduced.
  • the cross-sectional shape of the wire bundle is a rectangle.
  • the length of one pair of sides is greater than the length of the other pair of sides.
  • the pair of longer sides is arranged along the extending direction of the axis, and the pair of shorter sides is arranged along the first direction (i.e., the radial direction), which can ensure that the size of the wire bundle in the axial direction is larger than the size of the wire bundle in the radial direction, i.e., ensure that the first size H is larger than the second size W.
  • the cross-sectional shape of the wire bundle is an ellipse.
  • the ellipse has a major axis and a minor axis.
  • the major axis is arranged along the extending direction of the axis
  • the minor axis is arranged along the first direction (i.e., the radial direction), which can ensure that the size of the wire bundle in the axial direction is larger than the size of the wire bundle in the radial direction, i.e., ensure that the first size H is larger than the second size W.
  • the cross-sectional shape of the wire bundle is not limited to the above-described rectangle and ellipse, and can be set as needed.
  • the electromagnetic heating coil 20 is a wire bundle helically wound about the axis.
  • Each wire bundle includes 15 to 300 conducting wires, and a diameter of each conducting wire is 0.02 mm to 0.5 mm.
  • each wire bundle includes 100 conducting wires, and the diameter of each conducting wire is 0.1 mm.
  • 100 conducting wires with a diameter of 0.1 mm are twisted together to form the wire bundle, then the wire bundle is compressed into the required cross-sectional shape by using a special equipment, and finally the wire bundle is helically wound about the axis to form the electromagnetic heating coil 20.
  • the electromagnetic heating coil 20 includes a plurality of wire bundles helically wound about the axis.
  • Each wire bundle includes 15 to 300 conducting wires, and a diameter of each conducting wire is 0.02 mm to 0.5 mm.
  • the electromagnetic heating coil 20 is formed by three wire bundles helically wound about the axis, each wire bundle includes 100 conducting wires, and the diameter of each conducting wire is 0.1 mm.
  • the number of the wire bundles in the electromagnetic heating coil 20, the number of conducting wires in each wire bundle, and the diameter of each conducting wire are not specifically limited.
  • the electromagnetic heating coil 20 is formed by helically winding two wire bundles about the axis, each wire bundle includes 150 conducting wires, and the diameter of each conducting wire is 0.05 mm.
  • the heating assembly 200 further includes a mounting frame 30.
  • the electromagnetic heating coil 20 surrounds the mounting frame 30, and the heat-generating body 10 is disposed inside the mounting frame 30 and is at least partially opposite to the electromagnetic heating coil 20 in the first direction. In this way, the assembly and fixing of the heat-generating body 10 and the electromagnetic heating coil 20 are facilitated.
  • the heating assembly 200 further includes a magnetic shield 40, and the magnetic shield 40 is arranged outside the electromagnetic heating coil 20.
  • the magnetic shield 40 can fix the electromagnetic heating coil 20, and on the other hand, the magnetic shield 40 can prevent the electromagnetic heating coil 20 from radiating electromagnetic waves to the outside.
  • the operating current frequency of the electromagnetic heating coil 20 is 20 KHz to 1 MHz.
  • the electromagnetic heating coil 20 is adapted to work at a medium-low frequency current.
  • the current density is relatively large at this frequency, so that electric currents can flow through the conducting wires located in the middle of the electromagnetic heating coil 20, and the conducting wires can be effectively used and the skin effect can be reduced.
  • the operating current frequency of the electromagnetic heating coil 20 is 100 KHz to 600 KHz.
  • the electromagnetic heating coil 20 is adapted to work under the electric current with a suitable frequency, so as to ensure that the electric currents flow through all the conducting wires in the electromagnetic heating coil 20, further improving the utilization rate of the conducting wires and reducing the skin effect.
  • Another embodiment of the present application further provides the heating assembly 200 included in the above-described electronic atomizing device 100.
  • the electromagnetic heating coil 20 is at least one wire bundle helically wound about an axis, and each wire bundle includes at least two conducting wires. In the extending direction of the axis, the electromagnetic heating coil 20 includes at least one turn 21. In each turn 21, the at least one wire bundle has a first size H in the extending direction of the axis and a second size W in a first direction perpendicular to the extending direction of the axis. The first size H is greater than the second size W.
  • the size of the at least one wire bundle in the radial direction is smaller than the size of the at least one wire bundle in the axial direction.
  • the size of the electromagnetic heating coil 20 in the radial direction is reduced, thereby reducing the size of the electronic atomizing device 100 in the radial direction (e.g., a horizontal direction), which is beneficial to the miniaturization of the electronic atomizing device 100.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
EP23171464.3A 2022-06-02 2023-05-04 Elektromagnetische heizspule, heizanordnung und elektronische zerstäubungsvorrichtung Pending EP4287768A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221366482.9U CN217695285U (zh) 2022-06-02 2022-06-02 电磁加热线圈、加热组件及电子雾化装置

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EP4287768A1 true EP4287768A1 (de) 2023-12-06

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EP23171464.3A Pending EP4287768A1 (de) 2022-06-02 2023-05-04 Elektromagnetische heizspule, heizanordnung und elektronische zerstäubungsvorrichtung

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EP (1) EP4287768A1 (de)
JP (1) JP2023178216A (de)
KR (1) KR20230167702A (de)
CN (1) CN217695285U (de)
WO (1) WO2023231626A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217695285U (zh) * 2022-06-02 2022-11-01 深圳麦克韦尔科技有限公司 电磁加热线圈、加热组件及电子雾化装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020182746A1 (en) * 2019-03-11 2020-09-17 Nicoventures Trading Limited Aerosol provision device
WO2021116241A1 (en) * 2019-12-11 2021-06-17 Philip Morris Products S.A. Inductively heating aerosol-generating device with a multi-wire induction coil
US20210204603A1 (en) * 2018-05-17 2021-07-08 Philip Morris Products S.A. Aerosol-generating device having improved inductor coil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112021017963A2 (pt) * 2019-03-11 2021-11-23 Nicoventures Trading Ltd Dispositivo de provisão de aerossol e sistema de provisão de aerossol
WO2020182759A1 (en) * 2019-03-11 2020-09-17 Nicoventures Trading Limited Aerosol provision device
CN213719923U (zh) * 2020-10-21 2021-07-20 比亚迪股份有限公司 电子烟
CN217695285U (zh) * 2022-06-02 2022-11-01 深圳麦克韦尔科技有限公司 电磁加热线圈、加热组件及电子雾化装置
CN114983024A (zh) * 2022-06-02 2022-09-02 深圳麦克韦尔科技有限公司 电磁加热线圈、加热组件及电子雾化装置
CN218650275U (zh) * 2022-06-02 2023-03-21 深圳麦克韦尔科技有限公司 电磁加热线圈、加热组件及电子雾化装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210204603A1 (en) * 2018-05-17 2021-07-08 Philip Morris Products S.A. Aerosol-generating device having improved inductor coil
WO2020182746A1 (en) * 2019-03-11 2020-09-17 Nicoventures Trading Limited Aerosol provision device
WO2021116241A1 (en) * 2019-12-11 2021-06-17 Philip Morris Products S.A. Inductively heating aerosol-generating device with a multi-wire induction coil

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CN217695285U (zh) 2022-11-01
JP2023178216A (ja) 2023-12-14
WO2023231626A1 (zh) 2023-12-07
KR20230167702A (ko) 2023-12-11

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