WO2022253323A1 - Dispositif de génération d'aérosol, dispositif de chauffage pour celui-ci et procédé de préparation - Google Patents

Dispositif de génération d'aérosol, dispositif de chauffage pour celui-ci et procédé de préparation Download PDF

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Publication number
WO2022253323A1
WO2022253323A1 PCT/CN2022/096910 CN2022096910W WO2022253323A1 WO 2022253323 A1 WO2022253323 A1 WO 2022253323A1 CN 2022096910 W CN2022096910 W CN 2022096910W WO 2022253323 A1 WO2022253323 A1 WO 2022253323A1
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WO
WIPO (PCT)
Prior art keywords
heating element
heater
housing
aerosol
generating device
Prior art date
Application number
PCT/CN2022/096910
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English (en)
Chinese (zh)
Inventor
武建
徐中立
李永海
Original Assignee
深圳市合元科技有限公司
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 深圳市合元科技有限公司 filed Critical 深圳市合元科技有限公司
Priority to EP22815362.3A priority Critical patent/EP4349192A1/fr
Publication of WO2022253323A1 publication Critical patent/WO2022253323A1/fr

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/02Details
    • H05B3/04Waterproof or air-tight seals for heaters
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10Devices using liquid inhalable precursors
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40Constructional details, e.g. connection of cartridges and battery parts
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46Shape or structure of electric heating means
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/10Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/10Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145Carbon only, e.g. carbon black, graphite
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/40Heating elements having the shape of rods or tubes
    • H05B3/42Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20Devices using solid inhalable precursors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017Manufacturing methods or apparatus for heaters
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022Heaters specially adapted for heating gaseous material

Definitions

  • the embodiments of the present application relate to the technical field of heat-not-burn smoking appliances, and in particular to an aerosol generating device, a heater for the aerosol generating device and a preparation method.
  • Smoking articles eg, cigarettes, cigars, etc.
  • Burn tobacco during use to produce tobacco smoke.
  • Attempts have been made to replace these tobacco-burning products by making products that release compounds without burning them.
  • Patent No. 202010054217.6 proposes to use a heater encapsulating a spiral heating wire in a metal outer casing to heat tobacco products to generate aerosols.
  • the insulation between the spiral heating wire and the metal outer sleeve is usually achieved by filling the metal outer sleeve with inorganic insulating glue or inorganic powder. The porosity affects the transfer of heat between the heating wire and the outer sleeve.
  • An embodiment of the present application provides an aerosol generating device configured to heat an aerosol generating product to generate an aerosol; including:
  • a heater extending at least partially within the chamber and configured to heat the aerosol-generating article; the heater comprising:
  • a housing with a hollow extending axially;
  • An insulator formed by solidification or curing of molten precursor material within the hollow space for providing electrical insulation between the resistive heating element and the housing.
  • the housing comprises a metal or alloy.
  • the melting point of the precursor material forming the insulator is between 400°C and 1500°C.
  • the melting point of the precursor material is lower than the melting point of the shell.
  • the insulator comprises glaze or glass or silicon dioxide.
  • said resistive heating element is configured in the form of a helical coil extending along said hollow axial direction;
  • the cross-section of the conductor material of the helical coil is configured flat.
  • the section of the wire material of the helical coil is configured such that the length extending in the axial direction of the helical coil is greater than the length extending in the radial direction.
  • said insulator is configured to retain said resistive heating element within said hollow.
  • the resistive heating element is encased within the insulation.
  • the resistance heating element has a metal oxide layer formed by surface oxidation.
  • the insulator comprises alumina or its precursors, silica or its precursors, aluminates, aluminosilicates, aluminum nitride, aluminum carbide, zirconia, silicon carbide, silicon boride , silicon nitride, titanium dioxide, titanium carbide, boron carbide, boron oxide, borosilicate, silicate, rare earth oxide, soda lime, barium titanate, lead zirconate titanate, aluminum titanate, barium ferrite, strontium ferrite, or at least one such inorganic material.
  • Yet another embodiment of the present application also proposes a heater for an aerosol generating device, the heater comprising:
  • a housing comprising metal or alloy; said housing is configured as a pin or needle and has a hollow extending axially;
  • An insulator formed by solidification or curing of molten precursor material within the hollow space for providing electrical insulation between the resistive heating element and the housing.
  • Yet another embodiment of the present application also proposes a method for preparing a heater for an aerosol generating device, comprising the following steps:
  • Electrical insulation is provided between the housing and the resistive heating element by solidification or solidification of the molten precursor material within the hollow.
  • the step of solidifying or solidifying the molten precursor material in the hollow comprises:
  • the molten precursor material After dipping the resistive heating element into the molten precursor material, the molten precursor material is solidified by cooling.
  • a metal oxide layer is formed on the surface of the resistance heating element.
  • the resistance heating coil is heated by supplying power to the resistance heating element under air or an oxygen atmosphere, thereby forming a metal oxide layer on the surface of the resistance heating element.
  • the metal oxide layer is formed on the surface of the resistance heating element by heating the resistance heating element in air or an oxygen atmosphere.
  • the surface of the resistance heating element is sprayed or deposited or formed with an insulating material layer.
  • the insulating material layer is a glaze layer.
  • the insulator is formed by solidification after melting, and can completely penetrate into the gap or gap between the inner wall of the heater shell and the resistance heating element, so that they are basically completely insulated; and can improve mass production Consistency and yield of insulation in preparation.
  • Fig. 1 is a schematic structural diagram of an aerosol generating device provided by an embodiment of the present application
  • Fig. 2 is a schematic cross-sectional view of an embodiment of the heater in Fig. 1;
  • Fig. 3 is a structural schematic diagram of a viewing angle of the heater shell in Fig. 2;
  • Fig. 4 is a structural schematic diagram of a viewing angle of the resistance heating element in Fig. 2;
  • Fig. 5 is a schematic cross-sectional view of a viewing angle of the resistance heating coil in Fig. 4;
  • Fig. 6 is a structural schematic diagram of a resistance heating element in another embodiment
  • Fig. 7 is a schematic diagram of a method for preparing a heater according to an embodiment
  • Figure 8 is a schematic illustration of the formation of a molten state precursor in the heater housing of one embodiment
  • Figure 9 is a schematic diagram of a resistive heating element entering a molten state precursor, according to one embodiment
  • Fig. 10 shows the temperature change curve of the heater of an embodiment in use
  • Fig. 11 shows the temperature change curve of the heater in use in a comparative example
  • Fig. 12 shows the temperature change curve of the heater in another comparative example during use.
  • An embodiment of the present application proposes an aerosol generating device, the structure of which can be seen in Figure 1, including:
  • a heater 30 extending at least partially within the chamber is inserted into the aerosol-generating article A for heating when the aerosol-generating article A is received in the chamber, thereby causing the aerosol-generating article A to release a plurality of volatile compounds, and these volatile compounds Sexual compounds are formed only by heat treatment;
  • the electric core 10 is used for power supply;
  • the circuit 20 is used to conduct current between the battery cell 10 and the heater 30 .
  • the heater 30 is generally in the shape of a pin or a needle, which is advantageous for being inserted into the aerosol-generating article A; meanwhile, the heater 30 may have a length of about 12-19 millimeters, about 2 to 4 mm outer diameter size.
  • the aerosol-generating product A preferably uses a tobacco-containing material that releases volatile compounds from the matrix when heated; or it can also be a non-tobacco material that is suitable for electric heating and smoking after heating.
  • the aerosol-generating product A preferably adopts a solid substrate, which may include one or more of powder, granules, shredded strips, strips or flakes of one or more of vanilla leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; Alternatively, the solid matrix may contain additional tobacco or non-tobacco volatile flavor compounds to be released when the matrix is heated.
  • the heater 30 may generally include a resistive heating element, and an auxiliary substrate that assists in fixing or preparing the resistive heating element.
  • the resistive heating element is in the shape or form of a helical coil.
  • the resistive heating element is in the form of a conductive trace bonded to the substrate.
  • the resistive heating element is in the shape of the substrate of the foil.
  • Fig. 2 to Fig. 4 show a cross-section and a schematic view of some parts of the heater 30 in one embodiment, including:
  • the shell 31 is configured as a pin or needle-like hollow 311, and the front end has a tapered tip to facilitate insertion into the aerosol generating product A, and the rear end has an opening to facilitate the assembly of various functional components inside it;
  • the resistance heating element 32 is used to generate heat; specifically, the structure includes a helical resistance heating coil 320 configured to extend along a part of the axial direction of the casing 31, and first conductive wires respectively connected to the upper ends of the resistance heating coil 320 pin 321 , and a second conductive pin 322 connected to the lower end of the resistance heating coil 320 .
  • the first conductive pin 321 and the second conductive pin 322 are used to power the resistance heating coil 320 .
  • the first conductive pin 321 penetrates the resistance heating coil 320 from the upper end to the lower end thereof, thereby facilitating connection.
  • the resistive heating coil 320 is fully assembled and held within the hollow 311 of the housing 31, and the resistive heating coil 320 and the housing 31 are thermally conductive to each other after assembly.
  • the material of the resistance heating coil 320 is a metal material, a metal alloy, graphite, carbon, conductive ceramics, or a composite material of other ceramic materials and metal materials with appropriate resistance.
  • suitable metal or alloy materials include nickel, cobalt, zirconium, titanium, nickel alloy, cobalt alloy, zirconium alloy, titanium alloy, nickel-chromium alloy, nickel-iron alloy, iron-chromium alloy, iron-chromium-aluminum alloy, titanium alloy, iron-manganese At least one of aluminum-based alloy or stainless steel.
  • the shell 31 is made of thermally conductive metal or alloy material, such as stainless steel.
  • the resistance heating coil 320 and the inner wall of the hollow 311 of the housing 31 are in contact with each other to conduct heat, and at the same time, the housing 31 and the resistance heating coil 320 are insulated from each other.
  • FIG. 5 shows a schematic cross-sectional view of the resistance heating coil 320 in FIG. 4 .
  • the cross-sectional shape of the wire material of the resistance heating coil 320 is a wide or flat shape different from a conventional circle.
  • the cross section of the wire material of the resistance heating coil 320 has a dimension extending longitudinally that is greater than a dimension extending radially perpendicular to the longitudinal direction, so that the resistance heating coil 320 has a flattened rectangular shape.
  • the resistive heating coil 320 constructed above is completely or at least flattened in form of the wire material compared to conventional helical heating coils formed from circular cross-section wires. Consequently, the wire material extends to a lesser extent in the radial direction. By this measure, energy losses in the resistance heating coil 320 can be reduced. In particular, heat transfer can be facilitated.
  • the first conductive pin 321 and the second conductive pin 322 are made of a material with a low temperature coefficient of resistance.
  • the resistance heating coil 320 is made of a material with a relatively large positive or negative resistance temperature coefficient, and the circuit 20 can obtain the temperature of the resistance heating coil 320 by detecting the resistance temperature coefficient of the resistance heating coil 320 in use.
  • the first conductive pin 321 and the second conductive pin 322 are respectively made of galvanic couple materials such as nickel, nickel-chromium alloy, nickel-silicon alloy, nickel-chromium-cold copper, constant bronze, and iron-chromium alloy. prepared from two different materials. Further, a thermocouple that can be used to detect the temperature of the resistance heating coil 320 is formed between the first conductive pin 321 and the second conductive pin 322, thereby obtaining the temperature of the resistance heating coil 320.
  • the resistance heating coil 320 may also be made of a conventional wire material with a circular cross section.
  • the resistance heating element 32a shown in Fig. 6 adopt the resistance heating coil 320a of the helical coil that the circular wire material is prepared or constructed; Pin 322a is used for power supply or temperature measurement.
  • the hollow 311 of the casing 31 is filled or encapsulated with an insulator 33 , and the insulator 33 provides insulation between the resistance heating coil 320 / 320 a and the casing 31 . At the same time, the insulator 33 also provides retention for the resistance heating coil 320/320a.
  • the resistive heating coil 320 / 320a is substantially completely encased or buried within the insulator 33 .
  • Yet another embodiment of the present application also proposes a method for preparing the above heater 30, as shown in FIG. 7, including the following steps:
  • the shell 31 is a pin or needle with an axial hollow 311, and the material is preferably metal or alloy such as grade 430 stainless steel (SS430);
  • step S40 immerse the resistance heating coil 320/320a formed with the surface oxide layer in step S30 into the molten precursor 33a in step S20, as shown by the arrow in FIG. 33a is cooled and solidified or solidified from a molten state to form an insulator 33, and then the heater 30 shown in FIG. 2 can be produced.
  • the surface oxide layer formed by the surface oxidation of the resistance heating coil 320/320a made of metal or alloy in the above step S30 has a thickness of about 10-100 nm.
  • the resistance heating coil 320/320a is supplied with power to make it dry-heat to 300-500° C., and the time is about 10 minutes.
  • step S30 adopts the method of heating the resistance heating coil 320/320a under air or an oxygen atmosphere, so that the surface of the resistance heating coil 320/320a is thermally oxidized to form a metal oxide layer.
  • step S30 may also include:
  • S31 further form an insulating material layer on the surface of the resistance heating coil 320/320a by means of spraying, deposition, sintering, etc., such as glaze, ceramic layer and the like. It is beneficial to further improve the insulation effect.
  • the precursor 33a of the above insulator 33 is preferably made of a material with a melting point lower than that of the shell 31 .
  • the precursor 33 a of the insulator 33 is prepared from an insulating material with a lower melting point.
  • insulator 33 is glass or silica or glaze. Then, during the preparation process, after pouring their powder precursors 33a into the shell 31, they can be melted by heating to 650°C.
  • the precursor 33a of the insulator 33 can also use bismuth oxide with a melting point of about 860°C, or boron oxide with a melting point of about 450°C, or boron and silicon oxide with a melting point of about 680°C. , Aluminum oxide mixed glass.
  • the precursor 33a can have more choices.
  • the precursor 33a of the insulator 33 preferably adopts inorganic oxides, carbides, nitrides or inorganic salts with a melting point lower than 1500°C; Its precursors, aluminates, aluminosilicates, aluminum nitride, aluminum carbide, zirconia, silicon carbide, silicon boride, silicon nitride, titanium dioxide, titanium carbide, boron carbide, boron oxide, borosilicate, Silicates, rare earth oxides, soda lime, barium titanate, lead zirconate titanate, aluminum titanate, barium ferrite, strontium ferrite, or at least one of such inorganic materials are relatively readily available and Prepared.
  • the precursor 33 a of the insulator 33 is preferably made of, doped or added with a material with high thermal conductivity, such as silicon carbide; so that the heat of the resistance heating coil 320 / 320 a can be transferred to the shell 31 faster.
  • the precursor 33a of the insulator 33 has a melting point higher than 400°C to avoid melting of the insulator 33 when the heater 30 heats the aerosol-generating article A at a temperature of approximately 400°C.
  • the melting point of the precursor 33a of the insulator 33 is about 600-1500°C; preferably, it can also be at 600-800°C.
  • the opening of the hollow 311 of the casing 31 needs to be sealed or blocked to avoid powder dropping or glue leakage from the opening of the heater during use. and other conditions; through the heater 30 prepared by the above embodiment, the insulator 33 is obtained by melting and solidifying and is combined inside the lumen of the shell 31, there is no problem such as powder dropping or glue leakage, and the opening of the hollow 311 of the shell 31 can be Keep open or not closed.
  • the insulator 33 is formed by solidification in a molten state.
  • the precursor 33a can completely penetrate into the gap or gap between the inner wall of the shell 31 and the resistance heating coil 320/320a, and the insulator 33 is basically safe.
  • the inner wall of the housing 31 and the resistance heating coil 320/320a are kept in a non-contact state, so that they are basically completely insulated; the above preparation steps can improve the consistency and yield of insulation in mass production.
  • melting phase transition can basically completely eliminate internal gaps or pores, which is beneficial for increasing the heat capacity of the heater 30 and reducing temperature fluctuations in the heating process. At the same time, it can also help to improve the structural strength inside the heater and reduce powder shedding.
  • FIG. 10 shows the temperature change curve during use of the heater prepared by using glass glaze as the precursor 33a after melting at 800° C. and then cooling in the SS430 stainless steel shell 31 .
  • Fig. 11 shows the temperature change curve of the heater in a comparative example during use. The heater is formed by filling the SS430 stainless steel shell 31 with conventional alumina ceramic slurry as an insulator, and then sintering at a temperature of 800°C.
  • FIG. 12 shows the temperature change curve of the heater in another comparative example during use. The heater is prepared by filling diamond powder in the SS430 stainless steel shell 31 as an insulator. The above curves in use are all controlled by high-precision PID software to control the power of the power supply, and then sample the fluctuation of its actual working temperature.

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

Abstract

La présente demande concerne un dispositif de génération d'aérosol, un dispositif de chauffage pour celui-ci et un procédé de préparation. Le dispositif de génération d'aérosol comprend : une chambre pour recevoir un produit de génération d'aérosol ; et le dispositif de chauffage qui s'étend au moins partiellement dans la chambre et est utilisé pour chauffer le produit de génération d'aérosol. Le dispositif de chauffage comprend : un boîtier ayant une partie creuse s'étendant axialement ; un élément chauffant à résistance situé dans la partie creuse ; et un isolant formé par solidification ou durcissement d'un matériau précurseur fondu dans la partie creuse et utilisé pour fournir une isolation électrique entre l'élément chauffant à résistance et le boîtier. Selon le dispositif de génération d'aérosol, l'isolant est formé par solidification après fusion et peut pénétrer entièrement dans une fente ou un espace entre la paroi intérieure du boîtier du dispositif de chauffage et l'élément chauffant par résistance, de telle sorte que le boîtier et l'élément chauffant à résistance sont complètement isolés ; et la présente invention permet d'améliorer l'uniformité de l'isolation et le rendement en production de masse.
PCT/CN2022/096910 2021-06-04 2022-06-02 Dispositif de génération d'aérosol, dispositif de chauffage pour celui-ci et procédé de préparation WO2022253323A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22815362.3A EP4349192A1 (fr) 2021-06-04 2022-06-02 Dispositif de génération d'aérosol, dispositif de chauffage pour celui-ci et procédé de préparation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110626465.8 2021-06-04
CN202110626465.8A CN115428987A (zh) 2021-06-04 2021-06-04 气雾生成装置、用于气雾生成装置的加热器及制备方法

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WO2022253323A1 true WO2022253323A1 (fr) 2022-12-08

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EP (1) EP4349192A1 (fr)
CN (1) CN115428987A (fr)
WO (1) WO2022253323A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034330A (en) * 1974-09-19 1977-07-05 Tokyo Shibaura Electric Co., Ltd. Sheath heater
US4129774A (en) * 1975-08-28 1978-12-12 Hitachi Heating Appliances Co., Ltd. Filling materials for heating elements
JP2007059061A (ja) * 2005-07-29 2007-03-08 Kanken Techno Co Ltd 電気ヒータおよび該ヒータを用いた半導体排ガス処理装置
CN210630648U (zh) * 2019-07-12 2020-05-29 深圳市新宜康科技股份有限公司 基于平衡强度与发热功率的加热不燃烧器件
CN111657557A (zh) * 2020-05-19 2020-09-15 深圳市华诚达精密工业有限公司 加热装置及其制造方法、加热不燃烧烟具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034330A (en) * 1974-09-19 1977-07-05 Tokyo Shibaura Electric Co., Ltd. Sheath heater
US4129774A (en) * 1975-08-28 1978-12-12 Hitachi Heating Appliances Co., Ltd. Filling materials for heating elements
JP2007059061A (ja) * 2005-07-29 2007-03-08 Kanken Techno Co Ltd 電気ヒータおよび該ヒータを用いた半導体排ガス処理装置
CN210630648U (zh) * 2019-07-12 2020-05-29 深圳市新宜康科技股份有限公司 基于平衡强度与发热功率的加热不燃烧器件
CN111657557A (zh) * 2020-05-19 2020-09-15 深圳市华诚达精密工业有限公司 加热装置及其制造方法、加热不燃烧烟具

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CN115428987A (zh) 2022-12-06
EP4349192A1 (fr) 2024-04-10

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