Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/20—Devices using solid inhalable precursors
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
  • A24F40/46—Shape or structure of electric heating means
• • 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
  • H05B3/00—Ohmic-resistance heating
  • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
  • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
  • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
  • H05B3/265—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
• • 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
  • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
  • H05B2203/013—Heaters using resistive films or coatings
• • 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
  • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
  • H05B2203/017—Manufacturing methods or apparatus for heaters
• • 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
  • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
  • H05B2203/032—Heaters specially adapted for heating by radiation heating

Definitions

• the heating assembly includes an accommodating structure, a plurality of heating films, and a power supply assembly.
• the accommodating structure includes a near-end opening.
• the accommodating structure is configured to accommodate an aerosol generating article through the near-end opening and radiate infrared light to heat the aerosol generating article when the accommodating structure is heated.
• the plurality of heating films are spaced apart from each other on the accommodating structure along a length direction of the accommodating structure and are configured to heat the accommodating structure when the plurality of heating films are powered.
• Each of the plurality of heating films is disposed linearly.
• the power supply assembly includes three electrodes. The at least three electrodes are configured to be coupled to a power source assembly.
• each of the plurality of heating films includes at least two heating tracks connected in parallel.
• the plurality of heating films include a first heating film and a second heating film.
• the power supply assembly includes a first electrode, a second electrode, a third electrode, and a fourth electrode.
• the first electrode and the second electrode are disposed on the first end of the accommodating structure. Each of the first electrode and the second electrode is electrically connected to the first heating film.
• the third electrode and the fourth electrode are disposed on the second end of the accommodating structure. Each of the third electrode and the fourth electrode is electrically connected to the second heating film.
• the first heating film includes more than one heating track. Both ends of each heating track of the first heating film extend to a part of the accommodating structure that is close to the first end, enabling one end of each heating track of the first heating film to be electrically connected to the first electrode and the other end of each heating track of the first heating film to be electrically connected to the second electrode.
• the second heating film includes more than one heating track. Both ends of each heating track of the second heating film extend to a part of the accommodating structure that is close to the second end, enabling one end of each heating track of the second heating film to be electrically connected to the third electrode and the other end of each heating track of the second heating film to be electrically connected to the fourth electrode.
• each of the first electrode, the second electrode, the third electrode, and the fourth electrode includes both a coupling part and a connecting part.
• the coupling part is disposed on an end of the accommodating structure and is configured to be coupled to the power source assembly, to supply power to a corresponding one of the plurality of heating films.
• the connecting part is electrically connected to the coupling part and extends away from the coupling part along the length direction of the accommodating structure, enabling the connecting part to be electrically connected to an end of each heating track of an adjacent one of the plurality of heating films.
• each one of the plurality of heating films includes a first heating track and a second heating track that are spaced apart from each other.
• the first heating track is a curved track extending along a circumferential direction of the accommodating structure.
• the second heating track surrounds an outer contour of the first heating track.
• each of the first part and the first heating track is a U-shaped track that includes at least one U-shaped structure, and each U-shaped structure shares a same shape.
• the plurality of heating films include a first heating film and a second heating film.
• the power supply assembly includes a first electrode, a second electrode, and a third electrode.
• the first electrode is disposed on the first end of the accommodating structure and is electrically connected to the first heating film.
• the second electrode is disposed on the second end of the accommodating structure and is electrically connected to the second heating film.
• the third electrode is disposed on a same end of the accommodating structure with the first electrode or the second electrode and is electrically connected to each of the first heating film and the second heating film.
• the first electrode and/or the second electrode has an arc structure extending along a circumferential direction of the accommodating structure.
• the third electrode includes a common coupling part and a common connecting part.
• the common coupling part is disposed on a same end of the accommodating structure with the first electrode or the second electrode and is configured to be coupled to the power source assembly.
• the common connecting part is electrically connected to the common coupling part and extends away from the common coupling part along the length direction of the accommodating structure, enabling the common connecting part to be electrically connected to each of the first heating film and the second heating film.
• each of the first heating film and the second heating film includes more than one heating track.
• Each heating track of the first heating film and each heating track of the second heating film are curved tracks extending along the length direction of the accommodating structure.
• the accommodating structure further includes a substrate and a radiating layer.
• the substrate has a hollow tubular shape and is configured to accommodate the aerosol generating article.
• the radiating layer is disposed on an inner surface of a sidewall of the substrate and is configured to radiate infrared light to heat the aerosol generating article when the radiating layer is heated.
• the plurality of heating films are disposed on a side of the substrate away from the radiating layer.
• the accommodating structure further includes a substrate and a radiating layer.
• the substrate has a hollow tubular shape and is configured to accommodate the aerosol generating article.
• the radiating layer is disposed on an outer surface of a sidewall of the substrate and is configured to radiate infrared light to heat the aerosol generating article when the radiating layer is heated.
• the plurality of heating films are disposed on a side of the radiating layer away from the substrate.
• the accommodating structure further includes a substrate.
• the substrate has a hollow tubular shape.
• the substrate includes a main body and an infrared radiation material dispersed within the main body.
• the substrate is configured to accommodate the aerosol generating article and radiate infrared light to heat the aerosol generating article when the substrate is heated.
• the plurality of heating films are disposed on an outer surface of a sidewall of the substrate.
• the substrate is a transparent substrate.
• the aerosol generating device includes the heating assembly mentioned above and a power source assembly.
• the power source assembly is electrically connected to the heating assembly and is configured to supply power to the heating assembly.
• the infrared light has a certain degree of penetrability, does not require medium, and provides a relatively high heating efficiency, heating the aerosol generating article through the infrared light may effectively improve the preheating efficiency of the aerosol generating article and reduce the temperature difference between the interior of the aerosol generating article and the exterior of the aerosol generating article, thereby ensuring the uniform roasting of the aerosol generating article and reducing a risk of the aerosol generating article being scorched due to a localized high temperature.
• the power source assembly that includes at least three electrodes is provided.
• Every two of the at least three electrodes as a group are electrically connected to a corresponding one of the plurality of heating films, which enables each group of electrodes to supply power to a corresponding one of the plurality of heating films, thereby further enabling the plurality of heating films that are spaced apart from each other to receive electrical power from the power source assembly based on the corresponding group of electrodes in an independent manner, forming multiple heating regions on the accommodating structure along the length direction of the accommodating structure, and allowing for a segmented heating of the heating assembly.
• FIG. 1 is a schematic structural view of an aerosol generating system according to some embodiments of the present disclosure.
• an aerosol generating system in some embodiment, includes an aerosol generating device 1 and an aerosol generating article 2 accommodated in the aerosol generating device 1.
• the aerosol generating device 1 is configured to heat and atomize the aerosol generating article 2 to generate an aerosol for a user to inhale.
• the aerosol generating device 1 may be applicable in fields such as medical, cosmetic, health care, electronic atomization, and etc. Specific structures and functions of the aerosol generating device 1 may refer to the following embodiments.
• the aerosol generating article 2 may be a solid substance, including one or more powders, granules, fragments, strips, or sheets of plant leaves, such as tobacco, vanilla leaves, tea leaves, mint leaves, or the like.
• FIG. 2 is a schematic structural view of an aerosol generating device 1 according to some embodiments of the present disclosure.
• an aerosol generating device 1 is provided.
• the aerosol generating device 1 includes a heating assembly 10 and a power source assembly 20.
• the heating assembly 10 is configured to accommodate the aerosol generating article 2 and atomize the aerosol generating article 2 to generate an aerosol when the heating assembly 10 is powered.
• Specific structures and functions of the heating assembly 10 may refer to the heating assembly 10 in any one of the following embodiments.
• the power source assembly 20 is electrically connected to the heating assembly 10 and is configured to supply power to the heating assembly 10.
• the power source assembly 20 may be a lithium-ion battery.
• the accommodating structure 11 includes a substrate 111 and a radiating layer 112.
• the substrate 111 is in shape of a hollow tube.
• the substrate 111 defines an accommodating chamber 110, a near-end opening, and a far-end opening.
• the near-end opening and the far-end opening are both communicated with the accommodating chamber 110 and are arranged in opposite to each other along a length direction C of the substrate 111.
• the near-end opening is defined on a first end a of the accommodating structure 11 and the far-end opening is defined on a second end b of the accommodating structure 11.
• the accommodating chamber 110 is configured to accommodate the aerosol generating article 2.
• the radiating layer 112 is disposed on an inner surface of a sidewall of the substrate 111 and is configured to radiate infrared light when the radiating layer 112 is heated. The infrared light being radiated is then configured to heat and atomize the aerosol generating article 2 in the accommodating chamber 110.
• heating the aerosol generating article 2 through the infrared light as mentioned above may effectively improve a preheating efficiency of the aerosol generating article 2 and reduce a temperature difference between an interior of the aerosol generating article 2 and an exterior of the aerosol generating article 2, thereby ensuring an uniform roasting of the aerosol generating article 2 and reducing a risk of the aerosol generating article 2 being scorched due to a localized high temperature.
• the radiating layer 112 may be formed on the entire inner surface of the sidewall of the substrate 111 through methods such as a screen printing, a sputtering, a coating, or a printing, etc.
• the radiating layer 112 may be an infrared layer that is made of a material with high infrared emissivity, such as at least one of a perovskite system, a spinel system, a carbide, a silicide, a nitride, an oxide, or a rare-earth material, etc.
• FIG. 6 is a schematic cross-sectional view of a heating assembly 10 according to some embodiments of the present disclosure.
• a first insulating layer 113 that resists a high temperature is disposed on the surface of the substrate 111 away the radiating layer 112.
• the plurality of heating films 12 are disposed on a surface of the first insulating layer 113 away from the substrate 111 to reduce a risk of short circuit between the plurality of heating films 12 and the substrate 111.
• the thermal energy generated by the plurality of heating films 12 is conducted sequentially through the first insulating layer 113 and the substrate 111 to the radiating layer 112, so as to heat the radiating layer 112.
• the plurality of heating films 12 are disposed on the accommodating structure 11 through the first insulating layer 113. That is, the plurality of heating films 12 are indirectly in contact with the surface of the accommodating structure 11.
• the first insulating layer 113 is an enamel layer.
• the thermal energy generated by the plurality of heating films 12 may be conducted through the accommodating structure 11, e.g., the radiating layer 112, to the aerosol generating article 2, thereby further enhancing the heat utilization rate, speeding up an atomization process, and increasing an aerosol generation rate.
• FIG. 8 is a schematic structural view illustrating that an aerosol generating article 2 is accommodated in an accommodating structure 11 according to some other embodiments of the present disclosure.
• the aerosol generating article 2 may be spaced apart from the inner surface of the sidewall of the accommodating structure 11, e.g., the radiating layer 112, to reduce a risk of the aerosol generating article 2 scratching or damaging the radiating layer 112.
• the aerosol generating article 2 is heated mainly through the radiated infrared light.
• a surface of the plurality of heating films 12 and/or a surface of the radiating layer 112 may be coated with a protective layer.
• the protective layer may be an enamel layer.
• a thickness of the radiating layer 112 may range from 10 to 100 micrometers. In some embodiments, the thickness of the radiating layer 112 is in a range of 20 to 40 micrometers. In this case, the radiating layer 112 may be formed through a thick-film printing.
• a material of the radiating layer 112 may include at least one of a black silicon, a cordierite, a transition metal oxide-based spinel, a rare earth oxide, an ion co-doped perovskite, a silicon carbide, a zircon, and a boron nitride, etc.
• the thickness of the radiating layer 112 may range from 1 to 10 micrometers. In some embodiments, the thickness of the radiating layer 112 is in a range of 1 to 5 micrometers. In this case, the radiating layer 112 is a thin-film coating film.
• the material of the radiating layer 112 may include a chromium carbide (CrC) film, a titanium carbo-nitride (TiCN) film, or a diamond-like carbon (DLC) film, etc.
• FIG. 9a is a schematic view illustrating that the plurality of heating films and the power supply assembly shown in FIG. 4 unfold along a circumferential direction of the accommodating structure 11.
• Each heating film 12 includes at least one heating track.
• each heating film 12 includes at least two heating tracks 121, 122 connected in parallel.
• Each heating track 121/122 extends linearly along the length direction C (as shown in FIG. 13 below) of the accommodating structure 11 or the circumferential direction (as shown in FIG. 9a ) of the accommodating structure 11. It can be understood that a length of the linear heating track 121 is much greater than a width of the linear heating track 121.
• At least one of the two heating tracks 121, 122 is a curved track.
• the at least two heating tracks 121, 122 in each heating film 12 are all curved tracks.
• the curved track may be a U-shaped track or an S-shaped track.
• each heating track 121, 122 may include any other irregularly bent track, such as a combination of an S-shaped track and a U-shaped track, which is not limited herein.
• the power source assembly 13 includes at least three electrodes. Each of the at least three electrodes is coupled to the power source assembly 20. Every two of the at least three electrodes form an independent power supply group and are electrically connected to a corresponding one of the plurality of heating films 12, so as to supply power to the corresponding one of the plurality of heating films 12.
• both a power and a heating time of each power supply group may be independently controlled by an electronic control panel of the aerosol generating device 1, which enables the plurality of heating films 12 that are spaced apart from each other to receive electrical power from the power source assembly 20 based on the power supply groups in an independent manner, thereby forming multiple heating regions on the accommodating structure 11 along the length direction C of the accommodating structure 11, allowing for a segmented heating along the length direction C of the heating assembly 10.
• the heating assembly 10 is enabled to control a heating temperature of each heating region based on an actual temperature field requirement, ensuring a continuous generation of the aerosol and a consistent taste before and after user inhalation, and providing an avoidance of a phenomenon that a localized temperature becomes too high or too low.
• a risk of the additional electrode in the middle region conducting thermal heat to an outside when the additional electrode is in contact with other metals may be effectively reduced, which not only reduces an energy consumption of the heating assembly 10 but also ensures a temperature consistency between the middle region and other regions of the accommodating structure 11 that are adjacent to the middle region, thereby improving an atomization effect of the aerosol generating article 2 corresponding to the middle region of the accommodating structure 11 and enhancing the user's inhalation experience or inhalation taste.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Resistance Heating (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=84858892

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (22)

• 2022
  • 2022-09-16 CN CN202211132175.9A patent/CN115606866B/zh active Active
• 2023
  • 2023-06-30 WO PCT/CN2023/105219 patent/WO2024055719A1/zh not_active Ceased
  • 2023-06-30 EP EP23864456.1A patent/EP4588377A4/de active Pending
  • 2023-06-30 JP JP2024577308A patent/JP7835912B2/ja active Active

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