EP3815559A1 - Appareil de tabac étuvé et son ensemble chauffant - Google Patents

Appareil de tabac étuvé et son ensemble chauffant Download PDF

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Publication number
EP3815559A1
EP3815559A1 EP19862598.0A EP19862598A EP3815559A1 EP 3815559 A1 EP3815559 A1 EP 3815559A1 EP 19862598 A EP19862598 A EP 19862598A EP 3815559 A1 EP3815559 A1 EP 3815559A1
Authority
EP
European Patent Office
Prior art keywords
sheet
substrate
heating assembly
heating
heating member
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
EP19862598.0A
Other languages
German (de)
English (en)
Other versions
EP3815559A4 (fr
Inventor
Hongming Zhou
Junjie XIAO
Jiao Zhang
Xianzhi Qin
Tingting Wu
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 EP3815559A1 publication Critical patent/EP3815559A1/fr
Publication of EP3815559A4 publication Critical patent/EP3815559A4/fr
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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/262—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an insulated metal plate
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F13/00—Appliances for smoking cigars or cigarettes
    • 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
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • 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 plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • 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
    • 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
    • H05B2203/016—Heaters using particular connecting 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
    • 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
    • H05B2203/021—Heaters specially adapted for heating liquids

Definitions

  • the present invention relates to cigarette substitutes, and more particularly to an aerosol generating device and a heating assembly thereof.
  • a mounting base of a heating assembly is usually sleeved on an area of a heating member where electrodes located. Therefore, the electrodes are located adjacent to and electrically connected to a heat generating resistance portion, heat generated by the heat generating resistance portion when the heat generating resistance portion is powered will be easily transferred to the mounting base, thereby it will cause heat loss and reduce atomization effect. Meanwhile, the mounting base may dissipate harmful gases when heated to a high temperature, which may affect user's health.
  • the technical problem to be solved by the present invention is to provide an improved baked smoking device and a heating assembly thereof.
  • the technical solution adopted by the present invention to solve the technical problem is to provide a heating assembly for an aerosol generating device, which includes a heating member including a sheet-like substrate and an electric conductive path arranged on an outer side of the sheet-like substrate.
  • the electric conductive path includes a heat generating resistance portion, and an electrical connection portion electrically connected to the heat generating resistance portion.
  • the heat generating resistance portion and the electrical connection portion are arranged along a length direction of the sheet-like substrate.
  • the heating assembly further includes a mounting base.
  • the mounting base is sleeved on an end of the heating member on which the electrical connection portion is disposed.
  • a lengthwise section of the sheet-like substrate where the electrical connection portion is provided with through holes is provided with through holes.
  • the electrical connection portion includes two conductive electrodes electrically connected to the heat generating resistance portion, and a lead wire is electrically connected to a corresponding conductive electrode and is led out from an end of the heating member away from the heat generating resistance portion along the length direction of the heating member.
  • the conductive electrode is formed by printing and then sintering silver slurry.
  • the lead wire is connected to the conductive electrode by a high-temperature brazing process with silver-copper solder, pure silver solder or nickel solder under a protective atmosphere at 600-1100°C.
  • the lead wire is connected to the conductive electrode by a soldering process with high-temperature solder paste.
  • the sheet-like substrate is made of metal or alloy material
  • the heating member further includes an insulation layer covering the sheet-like substrate, and the electric conductive path is provided outside the insulation layer.
  • the sheet-like substrate has a thickness of 0.2-0.8 mm, and the insulation layer has a thickness less than 0.1 mm.
  • the insulation layer is formed by sintering after a surface of the sheet-like substrate is covered with glass slurry comprising silicon oxide, calcium oxide, and aluminum oxide.
  • the insulation layer is formed on the sheet-like substrate by spraying or printing; and the electric conductive path is provided on the insulation layer on one side, and two sides of the sheet-like substrate are covered with the insulation layers respectively.
  • an end of the heating member away from the mounting base is provided with a sharp head facilitating an insertion of a cigarette into a tube.
  • the sheet-like substrate is made of stainless steel or titanium alloy and formed by stamping or wire cutting process.
  • the heat generating resistance portion is formed by printing and then sintering silver-palladium resistor slurry, ruthenium-palladium resistor slurry, platinum slurry, or nickel-based slurry.
  • the heating member further includes an isolation layer covering the electric conductive path,
  • the isolation layer is a glaze layer formed by sintering glass glaze material, and all outer surfaces of the heating member are covered with the isolation layer.
  • the mounting base is injection-molded from high molecular polymer.
  • An aerosol generating device includes said heating assembly.
  • the implementation of the baked smoking device and its heating assembly according to the present invention provides the following advantages: since there is no heating zone between the second end where the mounting base is located and the conductive electrode, the possibility of generating harmful gases is reduced, therefore there can be more choices for the material of the mounting base and thus the cost is reduced. Further, in the heating member, a larger temperature gradient is formed between the section corresponding to the heat generating resistance portion inserted into the tobacco and the section corresponding to the conductive electrode, and the section corresponding to the conductive electrode has relatively low temperature and small heat dissipation, which is beneficial to effective use of energy.
  • an aerosol generating device includes a tubular tube 1 and a heating assembly 2.
  • the heating assembly 2 includes a heating member 21, a lead wire 22 and a mounting base 23.
  • the heating member 21 has a sheet-like shape and is configured to inserted into the tube 1 in a detachable manner.
  • the heating member 21 includes two lengthwise opposite ends, i.e., a first end A and a second end B.
  • the first end A extends outwards, by which the heating member 21 may be inserted into the tube 1 of the baked smoking device.
  • the heating member 21 includes two widthwise opposite sides, i.e., a first side C and a second side D.
  • the first side C and the second side D are respectively provided with blade portions 211 that make the thickness of the heating member 21 gradually decrease toward edges in the width direction.
  • a central line of the heating member 21 is located in the center of the tube 1, and distances from two widthwise opposite sides of the heating member 21 to an inner wall of the tube 1 are equivalent to each other.
  • the two widthwise opposite sides of the heating member 21 are gradually thinned, such that when the heating member 21 is inserted into a cigarette 3, pressure applied on tobacco of the cigarette 3 by the two widthwise opposite sides of the heating member 21 can be reduced, and thus the tobacco proximal to the two widthwise opposite sides corresponding to the blade portions 211 will not be subjected to extrusion or compression, thereby relieving the pressure applied on the tobacco proximal to the two sides and improving tobacco atomization efficiency.
  • the blade portion 211 may provide a smooth transition to prevent the tobacco from adhering on the side surfaces of the heating sheet.
  • the heating member 21 includes two opposite surfaces, i.e., a first surface E and a second surface F in a thickness direction.
  • the blade portion 211 includes chamfers provided on edges of the first surface E and the second surface F adjacent to the first side C, and chamfers provided on edges of the first surface E and the second surface F adjacent to the second side D.
  • the chamfer may be bevel or rounded.
  • the edges of the surface E and the second surface F adjacent to the first side C are respectively provided with the chamfers, and the edges of the first surface E and the second surface F adjacent to the second side D are respectively provided with the chamfers.
  • the blade portions 211 of the first side C and the second side D make the first side C and the second side D of the heating member 21 have rounded or sharp edges.
  • the blade portion 211 may alternatively be chamfered only on the edge of the first surface E or the second surface F adjacent to the first side C, and only on the edge of the first surface E or the second surface E adjacent to the second side D, thus making the first side C and the second side D have sharp edges, thereby facilitating formation of substrate by one-time stamping.
  • the blade portions 211 on the two opposite sides have smooth transitions, or are polished smoothly, or glazed, which can effectively prevent the tobacco from adhering on the sides and relieve tobacco accumulation.
  • the heating member 21 includes a sheet-like substrate 212 made of metal, an insulation layer 213 covering the sheet-like substrate 212, and an electric conductive path 214 arranged outside the insulation layer 213.
  • a lead wire 22 is connected to the electric conductive path 214 and is led out. When the lead wire 22 and thus the electric conductive path 214 are energized, the electric conductive path 214 heats up to atomize the tobacco.
  • the substrate of the heating member 21 is made of metal or alloy material
  • the sheet-like substrate 212 may be made of general metal materials such as stainless steel or titanium alloy, preferably stainless steel, such as grade 430 or grade 304 stainless steel.
  • the sheet-like substrate 212 usually has a thickness of about 0.2-0.8 mm, and is formed by stamping or wire cutting process, so as to save cost.
  • the blade portion 211 of the metal sheet-like substrate 212 may be formed by stamping, so as to further save cost. Length, width and other dimensions of the heating member 21 match with diameter and length of the cigarettes to be used with it, which facilitates sufficient heating of the tobacco.
  • the metal sheet-like substrate 212 is used as a main body of the heating member 21 so as to provide high ductility, which effectively prevents the heating member 21 from breaking under long-term high temperature and mechanical impacts such as when loading cigarettes. Meanwhile, the metal sheet-like substrate 212 has good thermal conductivity, which ensures surface temperature uniformity of the heating sheet, and facilitates heating the non-combustible cigarette to obtain an optimized taste.
  • the heating sheet made of stainless steel can obtain higher atomization efficiency and better taste.
  • the first end A of the sheet-like substrate 212 is provided with a sharp head 215 that facilitates the insertion of the cigarette 3, and the sharp head 215 can guide the insertion of the heating member 21 to reduce insertion resistance.
  • the sheet-like substrate 212 includes a flat surface 2121 located between the blade portions 211 formed on the two opposite sides of the heating sheet, and the electric conductive path 214 is printed in an area of the flat surface 2121.
  • the blade portions 211 are arranged outward from two widthwise opposite sides of the flat surface 2121.
  • the insulation layer 213 is formed by covering a surface of the sheet-like substrate 212 with glass slurry containing silicon oxide, calcium oxide, and aluminum oxide and then sintering it at 400-1000°C. Since the sheet-like substrate 212 made of metal or alloy is conductive, the insulation layer 213 can prevent short circuit between the sheet-like substrate 212 and the electric conductive path 214.
  • the insulation layer 213 is formed on the sheet substrate 212 by spraying or printing.
  • the thickness of the insulation layer 213 may be designed according to withstand voltage requirements between the electric conductive path 214 and the sheet-like substrate 212. Generally, the insulation layer 213 has a thickness less than 0.1 mm.
  • the electric conductive path 214 is provided on the insulation layer 213 on one side.
  • the insulation layer 213 may alternatively be provided only at one side of the sheet-like substrate 212 for arranging the electric conductive path 214.
  • the insulation layer 213 may alternatively be eliminated.
  • the electric conductive path 214 is used as a resistance heater, and may be a conductive layer formed on the insulation layer 213 by physical-vapor-depositing, electroplating, or printing.
  • the electric conductive path 214 includes a heat generating resistance portion 2141 and an electrical connection portion electrically connected to the heat generating resistance portion 2141.
  • the heat generating resistance portion 2141 and the electrical connection portion are arranged along the length direction of the sheet-like substrate 212, and the conductive electrodes 2142 are connected to an external circuit.
  • the electrical connection portion includes two conductive electrodes 2142 electrically connected to the heat generating resistance portion 2141.
  • the lead wires 22 are connected to the conductive electrodes 2142, and are led out from one end away from the heat generating resistance portion 2141 along the length direction of the heating member 21. That is, the heat generating resistance portion 2141 and the conductive electrodes 2142 are arranged from the first end A to the second end B, and the lead wires 22 are led out from the second end B.
  • the heat generating resistance portion 2141 may be formed by printing and then sintering any one of silver-palladium resistor slurry, ruthenium-palladium resistor slurry, platinum slurry, and nickel-based slurry.
  • the heat generating resistance portion 2141 can be flexibly patterned, and combined with the characteristics of the slurry and the thickness of the heat generating resistance portion 2141, a suitable resistance value for the heating member 21 can be obtained.
  • the resistance value of the heating member 21 is generally between 0.3-2.0 ⁇ , and the thickness of the resistor 2141 is generally less than 0.1 mm, preferably less than 20 um.
  • the conductive electrode 2142 is formed by printing and then sintering the silver-based slurry with relatively low resistivity.
  • the heat generating resistance portion 2141 can be energized to generate heat.
  • the lead wire 22 may be connected to the conductive electrodes 2142 by a high-temperature brazing process with silver-copper solder, pure silver solder or nickel solder under a protective atmosphere of 600-1100°C.
  • the lead wire 22 is connected to the conductive electrode 2142 by a soldering process with high temperature solder paste, where the operating temperature is greater than 300°C.
  • a lengthwise section of the sheet-like substrate 212 where the conductive electrode 2142 is located is provided with through holes 2122.
  • the through holes 2122 can isolate heat and reduce heat transferred to the second end B.
  • the tobacco located at that section may store and absorb a certain amount of tobacco tar, thereby preventing or reducing the leakage of tobacco tar therefrom.
  • the section corresponding to the heat generating resistance portion 2141 inserted into the tobacco and the section corresponding to the conductive electrode 2142 have a large temperature gradient therebetween.
  • the section corresponding to the conductive electrodes 2142 has a relatively low temperature and thus has low heat dissipation, which is beneficial to effective use of energy.
  • the heating member 21 further includes an isolation layer 216 covering the electric conductive path 214.
  • the isolation layer 216 is a glaze layer formed by sintering glass glaze material and has a thickness generally less than 0.1 mm. Two sides of the sheet-like substrate 212 are covered with the isolation layers 216 respectively. By providing the glaze layer, the surface of the heating sheet is smooth and has a smaller roughness, thereby reducing adhesion of tobacco stains and tobacco tar generated after baking of tobacco, and facilitating cleaning the appliance. In other embodiments, the isolation layer 216 may only cover the side where the electric conductive path 214 is located.
  • the width of the heating member 21 is gradually increased from the first end A to the second end B of the heating member 21, so that the heating member 21 has a shape of a sword.
  • the narrow first end A in combination with the thinning structure of the blade portion 211, makes a relatively small insertion resistance applied on the heating member 21, which is beneficial to the insertion and can effectively reduce the accumulation of tobacco on the sides of the heating sheet.
  • the wider bottom of the heating member is beneficial to increase the strength of the heating sheet so as to prevent the heating member from breaking due to multiple times of insertion and removal of cigarettes.
  • an angle between two widthwise opposite sides of the sharp head 215 is greater than an angle between two widthwise opposite sides of the second end B of the heating member 21.
  • the heating member 21 may alternatively be triangular in shape.
  • the mounting base 23 is sleeved on the second end B of the heating member 21, i.e. sleeved on the end of the heating member 21 from which the lead 22 is led out, and sleeved onto the electrical connection portion.
  • the mounting base 23 may alternatively be an individual component separately mounted on the heating member 21.
  • the sharp head 215 is located at the end of the heating member 21 away from the mounting base 23, such that the mounting base 23 and the sharp head 215 are respectively located at two opposite ends of the heating member 21.
  • the mounting base 23 will abut against an outer end of the tube 1 to limit the insertion depth of the heating member 21.
  • the lengthwise section of the sheet-like substrate 212 where the conductive electrode 2142 is located is provided with the through holes 2122, the heat transfer to the second end B is reduced, thereby preventing the temperature of the mounting base 23 from becoming too high.
  • the mounting base is injection-molded from high molecular polymer, such as polyether ether ketone and high temperature nylon and the like.

Landscapes

  • Resistance Heating (AREA)
EP19862598.0A 2018-09-21 2019-08-21 Appareil de tabac étuvé et son ensemble chauffant Pending EP3815559A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811110087.2A CN109123804A (zh) 2018-09-21 2018-09-21 烘烤烟具及其加热组件
PCT/CN2019/101822 WO2020057313A1 (fr) 2018-09-21 2019-08-21 Appareil de tabac étuvé et son ensemble chauffant

Publications (2)

Publication Number Publication Date
EP3815559A1 true EP3815559A1 (fr) 2021-05-05
EP3815559A4 EP3815559A4 (fr) 2021-09-01

Family

ID=64823287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19862598.0A Pending EP3815559A4 (fr) 2018-09-21 2019-08-21 Appareil de tabac étuvé et son ensemble chauffant

Country Status (5)

Country Link
EP (1) EP3815559A4 (fr)
JP (1) JP7263405B2 (fr)
KR (1) KR102643659B1 (fr)
CN (1) CN109123804A (fr)
WO (1) WO2020057313A1 (fr)

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WO2020206580A1 (fr) * 2019-04-08 2020-10-15 昂纳自动化技术（深圳）有限公司 Composant d'atomisation de cigarette électronique et son procédé de fabrication
CN210581031U (zh) * 2019-07-19 2020-05-22 深圳市卓力能电子有限公司 一种气溶胶产生装置的加热组件
CN110652042A (zh) * 2019-09-12 2020-01-07 深圳麦克韦尔科技有限公司 电子烘烤烟具及其发热装置
CN110693090A (zh) * 2019-09-30 2020-01-17 筑思有限公司 发热件、发热模组、烟弹以及电子烟
CN111418896A (zh) * 2020-05-06 2020-07-17 李可夫 应用于气溶胶生成系统的加热针组件及相应的制作方法
CN111743205B (zh) * 2020-05-27 2023-11-17 深圳麦克韦尔科技有限公司 发热体和加热装置
CN213215346U (zh) * 2020-06-05 2021-05-18 常州市派腾电子技术服务有限公司 加热组件、雾化芯及气溶胶生成装置
CN112244355A (zh) * 2020-09-30 2021-01-22 深圳麦时科技有限公司 发热组件及加热装置
CN113455715A (zh) * 2021-07-05 2021-10-01 深圳麦时科技有限公司 气溶胶产生装置及其加热组件
CN113729297A (zh) * 2021-08-13 2021-12-03 深圳市劳斯韦伯科技有限公司 高强度发热装置、电子烟及高强度发热装置的制备方法

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Also Published As

Publication number Publication date
EP3815559A4 (fr) 2021-09-01
JP2022501008A (ja) 2022-01-06
CN109123804A (zh) 2019-01-04
KR20210031687A (ko) 2021-03-22
JP7263405B2 (ja) 2023-04-24
KR102643659B1 (ko) 2024-03-05
WO2020057313A1 (fr) 2020-03-26

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