WO2022253323A1 - 气雾生成装置、用于气雾生成装置的加热器及制备方法 - Google Patents

气雾生成装置、用于气雾生成装置的加热器及制备方法 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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WIPO (PCT)
Prior art keywords
heating element
heater
housing
aerosol
generating device
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PCT/CN2022/096910
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English (en)
French (fr)
Inventor
武建
徐中立
李永海
Original Assignee
深圳市合元科技有限公司
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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/en
Publication of WO2022253323A1 publication Critical patent/WO2022253323A1/zh

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    • 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
    • H05B3/04—Waterproof or air-tight seals for heaters
    • 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
    • A24F40/10—Devices using liquid 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
    • 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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating 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
    • H05B3/14—Heating 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
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • 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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating 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
    • H05B3/14—Heating 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
    • H05B3/145—Carbon only, e.g. carbon black, graphite
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • 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
    • H05B2203/017—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
    • H05B2203/022—Heaters 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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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)

Abstract

本申请提出一种气雾生成装置、用于气雾生成装置的加热器及制备方法；其中，气雾生成装置包括：腔室，用于接收气溶胶生成制品；加热器，至少部分于腔室内延伸，用于加热气溶胶生成制品；加热器包括：外壳，具有沿轴向延伸的中空；电阻加热元件，位于中空内；绝缘体，由熔融的前体材料于中空内凝固或固化形成，用于在电阻加热元件与外壳之间提供电绝缘。以上气雾生成装置，绝缘体由熔融后凝固形成，能完全渗透至加热器的外壳内壁与电阻加热元件之间的缝隙或间隙中，进而使它们之间基本是完全绝缘的；并能提升大量生产制备中的绝缘的一致性和良品率。

Description

气雾生成装置、用于气雾生成装置的加热器及制备方法
相关申请的交叉参考
本申请要求于2021年06月04日提交中国专利局，申请号为202110626465.8，名称为“气雾生成装置、用于气雾生成装置的加热器及制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及加热不燃烧烟具技术领域，尤其涉及一种气雾生成装置、用于气雾生成装置的加热器及制备方法。
背景技术
烟制品(例如，香烟、雪茄等)在使用过程中燃烧烟草以产生烟草烟雾。人们试图通过制造在不燃烧的情况下释放化合物的产品来替代这些燃烧烟草的制品。
此类产品的示例为加热装置，其通过加热而不是燃烧材料来释放化合物。例如，该材料可为烟草或其他非烟草产品，这些非烟草产品可包含或可不包含尼古丁。在已知的技术中，202010054217.6号专利提出以金属外套管内封装螺旋发热丝的加热器对烟草产品进行加热生成气溶胶。对于以上加热器，螺旋发热丝与金属外套管之间的绝缘，通常采用在金属外套管内填充无机绝缘胶或者填充无机粉料实现绝缘，在不可避免的具有掉粉等问题外，还由于存在大量孔隙影响热量在发热丝和外套管之间的传递。
申请内容
本申请实施例提供一种气雾生成装置，被配置为加热气溶胶生成制品以生成气溶胶；包括：
腔室，用于接收气溶胶生成制品；
加热器，至少部分于所述腔室内延伸，并被配置为加热气溶胶生成制品；所述加热器包括：
外壳，具有沿轴向延伸的中空；
电阻加热元件，位于所述中空内；
绝缘体，由熔融的前体材料于所述中空内凝固或固化形成，用于在所述电阻加热元件与外壳之间提供电绝缘。
在优选的实施中，所述外壳包括金属或合金。
在优选的实施中，形成所述绝缘体的前体材料的熔点介于400～1500℃。
在优选的实施中，所述前体材料的熔点低于所述外壳的熔点。
在优选的实施中，所述绝缘体包括釉或玻璃或二氧化硅。
在优选的实施中，所述电阻加热元件被构造成沿所述中空的轴向延伸的螺旋线圈的形式；
所述螺旋线圈的导线材料的截面被构造成扁形。
在优选的实施中，所述螺旋线圈的导线材料的截面被构造成沿所述螺旋线圈的轴向方向延伸的长度大于沿径向方向延伸的长度。
在优选的实施中，所述绝缘体被配置为于所述中空内保持所述电阻加热元件。
在优选的实施中，所述电阻加热元件被包覆于所述绝缘体内。
在优选的实施中，所述电阻加热元件具有表面氧化形成的金属氧化层。
在优选的实施中，所述绝缘体包括氧化铝或其前体、二氧化硅或其前体、铝酸盐、铝硅酸盐、氮化铝、碳化铝、氧化锆、碳化硅、硼化硅、氮化硅、二氧化钛、碳化钛、碳化硼、氧化硼、硼硅酸盐、硅酸盐、稀土氧化物、碱石灰、钛酸钡、锆钛酸铅、钛酸铝、钡铁氧体、锶铁氧体，或此类无机材料中的至少一种。
本申请的又一个实施例还提出一种用于气雾生成装置的加热器，所述加热器包括：
外壳，包括金属或合金；所述外壳被构造成销钉或针状，并具有沿轴向延伸的中空；
电阻加热元件，位于所述中空内；
绝缘体，由熔融的前体材料于所述中空内凝固或固化形成，用于在所述电阻加热元件与外壳之间提供电绝缘。
本申请的又一个实施例还提出一种用于气雾生成装置的加热器的制备方法，包括如下步骤：
获取外壳和电阻加热元件；所述外壳具有沿轴向延伸的中空；
通过熔融的前体材料于所述中空内凝固或固化，以在所述外壳和电 阻加热元件之间提供电绝缘。
在优选的实施中，所述通过熔融的前体材料于所述中空内凝固或固化步骤包括：
向所述外壳的中空内添加所述前体材料，并将所述前体材料加热至熔融状态；
将所述电阻加热元件浸入所述熔融状态的前体材料后，通过冷却使所述熔融状态的前体材料凝固。
在优选的实施中，将所述电阻加热元件浸入所述熔融状态的前体之前，还包括：
在所述电阻加热元件表面形成金属氧化层。
在一个优选的实施中，通过在空气或有氧气氛下对所述电阻加热元件供电使所述电阻加热线圈发热，进而在所述电阻加热元件表面形成金属氧化层。
在又一个优选的实施中，通过在空气或有氧气氛下对所述电阻加热元件进行加热，进而在所述电阻加热元件表面形成金属氧化层。
在又一个优选的实施中，所述电阻加热元件表面喷涂或沉积或形成有绝缘材料层。例如，所述绝缘材料层是釉层。
以上气雾生成装置，绝缘体由熔融后凝固形成，能完全渗透至加热器的外壳内壁与电阻加热元件之间的缝隙或间隙中，进而使它们之间基本是完全绝缘的；并能提升大量生产制备中的绝缘的一致性和良品率。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是本申请一实施例提供的气雾生成装置的结构示意图；
图2是图1中加热器一个实施例的剖面示意图；
图3是图2中加热器外壳一个视角的结构示意图；
图4是图2中电阻加热元件一个视角的结构示意图；
图5是图4中电阻加热线圈一个视角的剖面示意图；
图6是又一个实施例的电阻加热元件的结构示意图；
图7是一个实施例的加热器的制备方法的示意图；
图8是一个实施例的加热器外壳中形成熔融状态前体的示意图；
图9是一个实施例的电阻加热元件进入熔融状态前体的示意图；
图10示出了一个实施例的加热器在使用中的温度变化曲线；
图11示出了一个对比例中的加热器在使用中的温度变化曲线；
图12示出了又一个对比例中的加热器在使用中的温度变化曲线。
具体实施方式
为了便于理解本申请，下面结合附图和具体实施方式，对本申请进行更详细的说明。
本申请的一实施例提出一种气雾生成装置，其构造可以参见图1所示，包括：
腔室，气溶胶生成制品A可移除地接收在腔室内；
至少部分在腔室内延伸的加热器30，当气溶胶生成制品A接收在腔室内时***至气溶胶生成制品A内进行加热，从而使气溶胶生成制品A释放多种挥发性化合物，且这些挥发性化合物仅通过加热处理来形成；
电芯10，用于供电；
电路20，用于在电芯10和加热器30之间引导电流。
在一个优选的实施例中，加热器30大体呈销钉或者针状的形状，进而对于***至气溶胶生成制品A内是有利的；同时，加热器30可以具有大约12～19毫米的长度，大约2～4毫米的外径尺寸。
进一步在可选的实施中，气溶胶生成制品A优选采用加热时从基质中释放的挥发化合物的含烟草的材料；或者也可以是能够加热之后适合于电加热发烟的非烟草材料。气溶胶生成制品A优选采用固体基质，可以包括香草叶、烟叶、均质烟草、膨胀烟草中的一种或多种的粉末、颗粒、碎片细条、条带或薄片中的一种或多种；或者，固体基质可以包含附加的烟草或非烟草的挥发性香味化合物，以在基质受热时被释放。
在实施中，加热器30通常可以包括电阻加热元件、以及辅助电阻加热元件固定或制备等的辅助基材。例如在一些实施中，电阻加热元件是螺旋线圈的形状或形式。或者在又一些实施中，电阻加热元件是结合于衬底上的导电轨迹的形式。或者在又一些实施中，电阻加热元件是薄片的基材的形状。
进一步图2至图4示出了一个实施例中加热器30的剖面及部分部件示意图，包括：
外壳31，被构造成是中空311的销钉或针状的形状，并且前端呈锥形尖端便于***至气溶胶生成制品A内、后端具有开口便于在其内部装 配各功能部件；
电阻加热元件32，用于发热；具体在结构上包括有被构造成沿外壳31的轴向的一部分延伸的螺旋形状的电阻加热线圈320，以及分别连接在电阻加热线圈320的上端的第一导电引脚321、以及连接在电阻加热线圈320下端的第二导电引脚322。在使用中，第一导电引脚321和第二导电引脚322用于对电阻加热线圈320进行供电。
具体根据图4所示，第一导电引脚321由电阻加热线圈320的上端贯穿电阻加热线圈320至下端，进而便于连接。
在图2所示的实施中，电阻加热线圈320是被完全装配和保持在外壳31的中空311内的，并且在装配后电阻加热线圈320与外壳31彼此导热的。
在一个可选的实施中，电阻加热线圈320的材质采用具有适当阻抗的金属材料、金属合金、石墨、碳、导电陶瓷或其它陶瓷材料和金属材料的复合材料。其中，适当的金属或合金材料包括镍、钴、锆、钛、镍合金、钴合金、锆合金、钛合金、镍铬合金、镍铁合金、铁铬合金、铁铬铝合金、钛合金、铁锰铝基合金或不锈钢等中的至少一种。
外壳31采用导热的金属或合金材质制备，例如不锈钢。当然在装配之后，电阻加热线圈320与外壳31的中空311的内壁是抵靠进而相互导热的，同时当外壳31与电阻加热线圈320之间是相互绝缘的。
图5示出了图4中电阻加热线圈320一个视角的剖面示意图，电阻加热线圈320的导线材料的截面形状是不同于常规圆形的宽或者扁的形状。在图3所示的优选实施中，电阻加热线圈320的导线材料的截面具有沿纵向延伸的尺寸大于沿垂直于纵向的径向延伸的尺寸，从而使电阻加热线圈320呈扁的矩形形状。
简单地说，以上构造的电阻加热线圈320与由圆形截面导线形成的常规螺旋状加热线圈相比，导线材料的形式完全地或至少是展平的。因此，导线材料沿着径向方向延伸呈较小的程度。通过这种措施，可以减少电阻加热线圈320中的能量损失。特别地，可以促进热量的传递。
在可选的实施中，第一导电引脚321和第二导电引脚322采用低电阻温度系数的材料制备。同时，电阻加热线圈320采用相对大的正向或负向电阻温度系数材料制备，进而在使用中电路20可以通过检测电阻加热线圈320的电阻温度系数进而获取电阻加热线圈320的温度。
在又一个优选的实施中，第一导电引脚321和第二导电引脚322分别采用镍、镍铬合金、镍硅合金、镍铬-考铜、康青铜、铁铬合金等电偶类材料中的两种不同材质制备的。进而在在第一导电引脚321和第二 导电引脚322之间形成可用于检测电阻加热线圈320温度的热电偶，进而获取电阻加热线圈320的温度。
在其他的变化可选实施中，电阻加热线圈320还可以采用常规的截面为圆形的导线材料制备形成的。例如图6中所示的电阻加热元件32a中采用圆形导线材料制备或构造的螺旋线圈的电阻加热线圈320a；并在电阻加热线圈320a的两端分别连接第一导电引脚321a和第二导电引脚322a进行供电或测温。
在又一个可选的实施中，例如图2所示，外壳31的中空311内填充或封装有绝缘体33的，并由该绝缘体33在提供电阻加热线圈320/320a与外壳31绝缘。同时，绝缘体33还对电阻加热线圈320/320a提供保持。
在实施中，电阻加热线圈320/320a基本是完全被包覆或埋没在绝缘体33内的。
本申请的又一个实施例还提出一种制备以上加热器30的方法，参见图7所示，包括如下步骤：
S10，获取外壳31；当然根据以上所描述，该外壳31是具有轴向中空311的销钉或针状，材质优选为金属或合金例如等级430的不锈钢(SS430)；
S20，向外壳31的中空311内填充或倒入形成绝缘体33的前体33a，并加热前体33a使其形成熔融状态，如图8所示；
S30，获取由电阻性金属或合金材质制备的电阻加热线圈320/320a，并在空气或有氧气氛下，通过对电阻加热线圈320/320a供电使电阻加热线圈320/320a发热，进而使电阻加热线圈320/320a表面产生热氧化，以形成位于表面的金属氧化层；
S40，将步骤S30中形成有表面氧化层的电阻加热线圈320/320a浸入至步骤S20中具有熔融状态前体33a内，如图9中箭头所示；而后自然冷却或降温冷却的方式使前体33a由熔融状态冷却凝固或固化形成绝缘体33，进而即可制备获得图2所示的加热器30。
其中，以上步骤S30金属或合金材质的电阻加热线圈320/320a通过表面氧化形成的表面氧化物层大约具有10～100nm的厚度。大概在实施中，将电阻加热线圈320/320a供电使其发热干烧到300～500℃，时间大概保持10min即可。
或者在又一个可以替换的实施中，步骤S30采用在空气或有氧气氛下，通过对电阻加热线圈320/320a加热的方式，使电阻加热线圈320/320a表面产生热氧化，以形成位于表面的金属氧化层。
或者在又一个可选的实施中，步骤S30之后还可以包括：
S31，通过喷涂、沉积、烧结等方式在电阻加热线圈320/320a表面进一步形成绝缘材料层，绝缘材料例如釉、陶瓷层等。对于进一步提升绝缘效果是有利的。
在一个优选的实施中，以上绝缘体33的前体33a优选采用熔点低于外壳31的材料。
在又一个优选的实施中，基于通常外壳31采样不锈钢时，则绝缘体33的前体33a采用熔点低于的绝缘材料制备。在最优选的实施中，绝缘体33为玻璃或二氧化硅或釉。则在制备的过程中，将它们的粉末前体33a倒入外壳31内后，加热至650℃即可使其熔融。
在其他的更多的可选实施中，绝缘体33的前体33a还可以采用大约熔点为860℃的氧化铋、或者熔点大约为450℃的氧化硼、或者熔点大约为680℃的含有硼、硅、铝的氧化物的混合玻璃。
或者在其他的变化实施中，外壳31为熔点温度比不锈钢更高的金属/合金或陶瓷时，则前体33a可以具有更多的选择。
在实施中，绝缘体33的前体33a优选采用熔点低于1500℃的无机氧化物、碳化物、氮化物或者无机盐类等；例如：前体33a采用氧化铝或其前体、二氧化硅或其前体、铝酸盐、铝硅酸盐、氮化铝、碳化铝、氧化锆、碳化硅、硼化硅、氮化硅、二氧化钛、碳化钛、碳化硼、氧化硼、硼硅酸盐、硅酸盐、稀土氧化物、碱石灰、钛酸钡、锆钛酸铅、钛酸铝、钡铁氧体、锶铁氧体，或此类无机材料中的至少一种，是比较容易获得和制备的。
在又一个实施中，绝缘体33的前体33a优选采用、掺杂或添加具有高导热系数的材料，例如碳化硅；使电阻加热线圈320/320a的热量能更快地传递至外壳31。
在又一个实施中，绝缘体33的前体33a的熔点高于400℃，以避免加热器30在大致400℃的温度下加热气溶胶生成制品A时绝缘体33产生融化。在更加优选的实施中，绝缘体33的前体33a的熔点大约600～1500℃；优选地还可以在600～800℃。
从以上可以看出，通过熔融后冷却凝固的绝缘体33与外壳31和/或电阻加热线圈320/320a均是紧密结合的，则在加热器30内无需在通过其他的支撑或固定结构对电阻加热线圈320/320a和/或绝缘体33提供支撑或保持。
作为现有技术常规措施，通过填充粉末状的绝缘材料或者填充绝缘胶时，需要对外壳31的中空311的开口进行封闭或堵塞，以避免在使 用中出现从加热器的开口掉粉或漏胶等状况；通过以上实施方案制备的加热器30，绝缘体33由熔融固化获得的且结合在外壳31的管腔内部，不存在掉粉或漏胶等问题，则外壳31的中空311的开口是可以保持敞开或非封闭的。
进一步在以上实施中，绝缘体33由熔融状态固化形成，在熔融态下前体33a能完全渗透至外壳31内壁与电阻加热线圈320/320a之间的缝隙或间隙，则绝缘体33基本上是能安全地使外壳31内壁与电阻加热线圈320/320a呈非接触的状态，进而使它们之间基本是完全绝缘的；采用以上制备步骤能提升大量生产制备中的绝缘的一致性和良品率。
以上制备中，采用更高温度的高温熔融而较低温度的烧结，通过熔融使前体33a的物质由晶相变为液相，属于一级相变；而普通烧结没有发生一级相变。采用熔融的相变基本能完全消除内部的间隙或孔隙，对于提升加热器30的热容、减少加热过程中的温度波动是有利的。同时，还能更加有助于提升加热器内部的结构强度，减少掉粉。
具体图10示出了一个实施例中以玻璃釉作为前体33a在800℃熔融后、于SS430不锈钢外壳31内冷却制备的加热器在使用过程中的温度变化曲线。图11示出了一个对比例中的加热器在使用过程中的温度变化曲线。该加热器以常规的氧化铝陶瓷浆料作为绝缘体填充至SS430不锈钢外壳31后，采用800℃温度烧结而形成。图12示出了另一个对比例中的加热器在使用过程中的温度变化曲线，该加热器是在SS430不锈钢外壳31内填充金刚石粉末作为绝缘体制备而得到。以上使用中的曲线，均是通过高精度的PID软件控制供电的功率，进而采样其实际工作温度的波动。
从图中可以看出，图12所示的常规填充金刚石绝缘粉末的加热器温度曲线，在工作中温度的反馈和加热过程温度跳动幅度比较大，大约在30～50℃；图11所示的氧化铝陶瓷浆料烧结的加热器温度曲线，加热过程中的温度跳动幅度大约在10～20℃；图10所示的采用以熔融后凝固釉料作为绝缘体的加热器温度曲线，加热过程中温度跳动比较小，跳动幅度大约3～5℃；恒温加热过程中曲线比较平坦。
需要说明的是，本申请的说明书及其附图中给出了本申请的较佳的实施例，但并不限于本说明书所描述的实施例，进一步地，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本申请所附权利要求的保护范围。

Claims (14)

  1. 一种气雾生成装置，被配置为加热气溶胶生成制品以生成气溶胶；包括：
    腔室，用于接收气溶胶生成制品；
    加热器，至少部分于所述腔室内延伸，并被配置为加热气溶胶生成制品；其特征在于，所述加热器包括：
    外壳，具有沿轴向延伸的中空；
    电阻加热元件，位于所述中空内；
    绝缘体，由熔融的前体材料于所述中空内凝固或固化形成，用于在所述电阻加热元件与外壳之间提供电绝缘。
  2. 如权利要求1所述的气雾生成装置，其特征在于，所述外壳包括金属或合金。
  3. 如权利要求1所述的气雾生成装置，其特征在于，形成所述绝缘体的前体材料的熔点介于400～1500℃。
  4. 如权利要求1至3任一项所述的气雾生成装置，其特征在于，所述前体材料的熔点低于所述外壳的熔点。
  5. 如权利要求1至3任一项所述的气雾生成装置，其特征在于，所述绝缘体包括釉或玻璃或二氧化硅。
  6. 如权利要求1至3任一项所述的气雾生成装置，其特征在于，所述电阻加热元件被构造成沿所述中空的轴向延伸的螺旋线圈的形式；
    所述螺旋线圈的导线材料的截面被构造成扁形。
  7. 如权利要求6所述的气雾生成装置，其特征在于，所述螺旋线圈的导线材料的截面被构造成沿所述螺旋线圈的轴向方向延伸的长度大于沿径向方向延伸的长度。
  8. 如权利要求1至3任一项所述的气雾生成装置，其特征在于，所述绝缘体被配置为于所述中空内保持所述电阻加热元件。
  9. 如权利要求1至3任一项所述的气雾生成装置，其特征在于，所述电阻加热元件被包覆于所述绝缘体内。
  10. 如权利要求1至3任一项所述的气雾生成装置，其特征在于，所述电阻加热元件具有表面氧化形成的金属氧化层。
  11. 一种用于气雾生成装置的加热器，其特征在于，所述加热器包括：
    外壳，包括金属或合金；所述外壳被构造成销钉或针状，并具有沿轴向延伸的中空；
    电阻加热元件，位于所述中空内；
    绝缘体，由熔融的前体材料于所述中空内凝固或固化形成，用于在所述电阻加热元件与外壳之间提供电绝缘。
  12. 一种用于气雾生成装置的加热器的制备方法，其特征在于，包括如下步骤：
    获取外壳和电阻加热元件；所述外壳具有沿轴向延伸的中空；
    通过熔融的前体材料于所述中空内凝固或固化，以在所述外壳和电阻加热元件之间提供电绝缘。
  13. 如权利要求12所述的用于气雾生成装置的加热器的制备方法，其特征在于，所述通过熔融的前体材料于所述中空内凝固或固化步骤包括：
    向所述外壳的中空内添加所述前体材料，并将所述前体材料加热至熔融状态；
    将所述电阻加热元件浸入所述熔融状态的前体材料后，通过冷却使所述熔融状态的前体材料凝固。
  14. 如权利要求13所述的用于气雾生成装置的加热器的制备方法，其特征在于，将所述电阻加热元件浸入所述熔融状态的前体之前，还包括：在所述电阻加热元件表面形成金属氧化层。
PCT/CN2022/096910 2021-06-04 2022-06-02 气雾生成装置、用于气雾生成装置的加热器及制备方法 WO2022253323A1 (zh)

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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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