WO2022120526A1 - 针状发热体及气溶胶产生装置 - Google Patents

针状发热体及气溶胶产生装置 Download PDF

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Publication number
WO2022120526A1
WO2022120526A1 PCT/CN2020/134299 CN2020134299W WO2022120526A1 WO 2022120526 A1 WO2022120526 A1 WO 2022120526A1 CN 2020134299 W CN2020134299 W CN 2020134299W WO 2022120526 A1 WO2022120526 A1 WO 2022120526A1
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WO
WIPO (PCT)
Prior art keywords
heating element
outer tube
element according
heating
circuit
Prior art date
Application number
PCT/CN2020/134299
Other languages
English (en)
French (fr)
Inventor
李沛
蒋振龙
李小平
Original Assignee
深圳麦克韦尔科技有限公司
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 深圳麦克韦尔科技有限公司 filed Critical 深圳麦克韦尔科技有限公司
Priority to JP2023528539A priority Critical patent/JP2023551133A/ja
Priority to PCT/CN2020/134299 priority patent/WO2022120526A1/zh
Priority to KR1020237016110A priority patent/KR20230092955A/ko
Priority to EP20964473.1A priority patent/EP4230071A4/en
Priority to CN202110326890.5A priority patent/CN113080527A/zh
Priority to US17/542,493 priority patent/US20220175045A1/en
Priority to EP21212424.2A priority patent/EP4008198A1/en
Priority to KR1020210173732A priority patent/KR20220080724A/ko
Priority to JP2021198763A priority patent/JP2022090650A/ja
Publication of WO2022120526A1 publication Critical patent/WO2022120526A1/zh
Priority to US18/329,893 priority patent/US20230328848A1/en

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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
    • A24F40/46—Shape or structure of electric heating means
    • 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
    • A24F40/50—Control or monitoring
    • A24F40/51—Arrangement of sensors
    • 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
    • A24F40/50—Control or monitoring
    • A24F40/57—Temperature control
    • 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
    • A24F40/70—Manufacture
    • 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
    • H05B3/0019—Circuit arrangements
    • 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
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals 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
    • 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
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes 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
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • 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
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • 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 invention relates to the field of atomization, and more particularly, to a needle-shaped heating body and an aerosol generating device.
  • Heat-not-burn electronic cigarettes also known as low-temperature curing cigarettes, are aerosol-generating devices that heat tobacco and other aerosol-generating substrates to form smokeable cigarettes in a low-temperature heat-not-burn method. Heating tobacco at controlled temperature can rapidly release tobacco extract in tobacco under low temperature conditions.
  • the existing needle-shaped heating element usually includes a heating circuit for heating the aerosol to generate a matrix and a temperature measuring circuit for detecting the temperature. The distance between them is small.
  • the technical problem to be solved by the present invention is to provide a needle-shaped heating element and an aerosol generating device having the needle-shaped heating element with a small number of required electrode leads in view of the above-mentioned defects of the prior art.
  • the technical solution adopted by the present invention to solve the technical problem is: constructing a needle-shaped heating body, including a conductive outer tube, a heating circuit and a temperature measuring circuit arranged in the outer tube, the heating circuit and the One pole of the temperature measuring circuit is electrically connected with the outer tube.
  • the heating circuit is made of metal PTC material.
  • the temperature coefficient of resistance of the heating circuit is between 1500-3500 ppm.
  • the temperature measurement circuit is made of metal PTC material, or the temperature measurement circuit adopts a thermocouple structure.
  • the heating element further includes a first electrode lead conductively connected to the outer tube.
  • the first electrode lead is welded to the outside of the bottom of the outer tube.
  • the heating element further includes a needle embedded in the top of the outer tube.
  • one poles of the heating circuit and the temperature measuring circuit are both press-fitted between the needle and the outer tube, so as to communicate with the outer tube.
  • the needle includes a cylindrical insert embedded in the outer tube and a tapered lead-in connected above the insert.
  • the heating body further includes an insulating rod disposed in the outer tube, and the heating circuit and the temperature measuring circuit are wound outside the insulating rod.
  • the heating circuit is disposed on the outer layer of the temperature measuring circuit.
  • an insulating layer is formed between the heating circuit and the temperature measuring circuit by dipping or spraying.
  • the heating body further includes a second electrode lead conductively connected to the other pole of the heating circuit and a third electrode lead conductively connected to the other pole of the temperature measurement circuit.
  • the material of the outer tube is a high temperature alloy or a metal material.
  • the inside of the outer tube is filled with a high temperature resistant insulating medium, and the outside is coated with a ceramic coating.
  • the heating body further includes a base, and the lower end of the outer tube is inserted on the base.
  • the base is made of ceramic material.
  • the lower end of the outer tube is welded to the base by ceramic paint.
  • the present invention also provides an aerosol generating device, comprising the heating element described in any one of the above.
  • the implementation of the present invention has at least the following beneficial effects: one pole of the heating circuit and the temperature measuring circuit are both connected to the outer tube, and the heating circuit and the temperature measuring circuit share one pole, thereby reducing the number of electrode leads required in the heating body.
  • FIG. 1 is a schematic three-dimensional structure diagram of a heating element in some embodiments of the present invention.
  • Fig. 2 is the sectional structure schematic diagram of the heating element shown in Fig. 1;
  • Fig. 3 is the exploded structure schematic diagram of the heating element shown in Fig. 1;
  • FIG. 4 is a schematic three-dimensional structure diagram of an aerosol generating device in some embodiments of the present invention.
  • the needle-shaped heating element 1 in some embodiments of the present invention may include a conductive outer tube 11 , a needle 12 embedded in the top of the outer tube 11 , and an insulating insulating material arranged in the outer tube 11 in the longitudinal direction.
  • the rod 14 , the heating circuit 15 and the temperature measuring circuit which are arranged in the outer tube 11 and have one pole electrically connected to the outer tube 11 , the first electrode lead 17 that is electrically connected to the outer tube 11 , and are electrically connected to the other pole of the heating circuit 15
  • the second electrode lead 18 , the third electrode lead 19 conductively connected to the other pole of the temperature measurement circuit, and the base 13 disposed at the bottom of the outer tube 11 .
  • One pole of the heating circuit 15 and the temperature measuring circuit is connected to the outer tube 11 and further connected to the first electrode lead 17.
  • the heating circuit 15 and the temperature measuring circuit share one pole, thereby reducing the number of electrode leads in the heating body.
  • the first electrode leads 17 are drawn out from the outer tube 11, which can increase the distance between the electrode leads.
  • the insulating rod 14 can be made of high-temperature-resistant insulating material, such as high-temperature-resistant insulating ceramic material, which can be roughly in the shape of a long cylinder and can include a first segment 141, a second segment 142, and a third segment connected in sequence from top to bottom. 143.
  • the diameter of the second section 142 is larger than the diameters of the first section 141 and the third section 143 and smaller than the inner diameter of the outer tube 11 .
  • the first section 141 can be tightly embedded in the needle 12 and fixed, the stepped surface formed between the first section 141 and the second section 142 can abut against the bottom surface of the needle 12, and the third section 143 can be tightly embedded in fixed in the base 13 .
  • the heating circuit 15 and the temperature measuring circuit can be helically wound outside the second section 142 in the axial direction.
  • the function of the heating circuit 15 is to heat the aerosol to generate a matrix after being electrified and heated, which can be made of a metal PTC (Positive Temperature Coefficient, positive temperature coefficient) material, and the resistance of the material increases with the increase of temperature.
  • the temperature coefficient of resistance of the heating circuit 15 can be selected between 1500-3500ppm.
  • the temperature measurement circuit can be made of metal PTC material, or it can also use a thermocouple structure.
  • the heating circuit 15 and the temperature measuring circuit may adopt an interlayer structure. Specifically, the temperature measuring circuit is located in the inner layer, and the heating circuit 15 is located in the outer layer. During manufacture, the temperature measurement circuit is first wound and fixed on the insulating rod 14, and an insulating layer is formed by dipping or spraying; after sintering and curing, the heating circuit 15 is wound; finally, the top needle 12 and the bottom base 13 are used for fixing. The second electrode lead 18 welded with the lower end of the heating circuit 15 and the third electrode lead 19 welded with the lower end of the temperature measuring circuit are led out with the insulating rod 14 .
  • the needle 12 can be made of high temperature resistant alloy or metal material, such as stainless steel. Needle 12 may, in some embodiments, include an upper introduction portion 121 and a lower insertion portion 122 .
  • the introduction portion 121 has a conical shape, which facilitates insertion into the aerosol-generating substrate.
  • the diameter of the large end of the introduction portion 121 is the same as the outer diameter of the outer tube 11 and is larger than the outer diameter of the insertion portion 122 .
  • the embedded portion 122 is cylindrical and tightly embedded in the outer tube 11 .
  • the upper ends of the heating circuit 15 and the temperature measuring circuit are press-fitted with the outer tube 11 through the introduction part 121 of the needle 12 so as to be connected to the outer tube 11 and then to the first electrode lead 17 .
  • the first electrode lead 17 is welded to the outer side surface of the bottom of the outer tube 11 so as to be in conduction with the outer tube 11 .
  • the outer tube 11 is in the shape of a round tube, which can be made of high temperature resistant alloy or metal material, such as stainless steel.
  • the inside of the outer tube 11 is filled with a high temperature resistant insulating medium, and the outside is coated with a ceramic coating.
  • the base 13 can be a ceramic structure, which can be welded to the outer tube 11 by ceramic paint.
  • the top surface of the base 13 is concavely formed with an installation groove 130
  • the outer tube 11 is embedded in the installation groove 130
  • the bottom surface of the outer tube 11 can abut against the bottom surface of the installation groove 130 .
  • the bottom surface of the base 13 is concavely formed with electrode holes 131 communicating with the mounting groove 130 .
  • the aerosol generating device in some embodiments of the present invention can be roughly in the shape of a square column and includes a casing 2 , a heating element 1 disposed in the casing 2 , and a heating element 1 disposed in the casing 2 and connected to the heating element 1 .
  • Electrically connected batteries, the aerosol-generating substrate 3 can be inserted into the housing 2 from the top of the housing 2 .
  • the upper end of the heating element 1 is inserted into the aerosol-generating substrate 3, and the aerosol-generating substrate 3 is baked and heated after being electrified and heated to form smoke that can be sucked by the user.
  • the aerosol generating device is not limited to be in the shape of a square column, and it can also be in other shapes such as a column.
  • the first electrode lead 17 of the heating element 1 can be electrically connected to the positive electrode of the battery, and the second electrode lead 18 and the third electrode lead 19 of the heating element 1 can be electrically connected to the negative electrode of the battery; or, the first electrode of the heating element 1
  • the lead 17 may also be electrically connected to the negative electrode of the battery, and the second electrode lead 18 and the third electrode lead 19 of the heating element 1 are electrically connected to the positive electrode of the battery.

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

Abstract

一种针状发热体(1)及气溶胶产生装置，发热体(1)包括可导电的外管(11)以及设置于外管(11)中的发热线路(15)和测温线路，发热线路(15)和测温线路的一极均与外管(11)导电连接。发热线路(15)和测温线路共用一极，从而可减少发热体(1)中所需电极引线的数量。

Description

针状发热体及气溶胶产生装置 技术领域
本发明涉及雾化领域，更具体地说，涉及一种针状发热体及气溶胶产生装置。
 背景技术
加热不燃烧型电子烟，也称低温烘烤烟具，是一种通过低温加热不燃烧的方式加热烟草等气溶胶产生基质形成可抽吸烟雾的气溶胶产生装置，其主要通过发热体通电后精确控制温度加热烟草，可在低温条件下迅速释放烟草中的烟草提取物。
现有的针状发热体通常包括用于通电发热后加热气溶胶产生基质的发热线路和用于检测温度的测温线路，发热体的电极引线一般有多根，电极引线较多或者电极引线之间距离较小。
 技术问题
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种所需电极引线的数量较少的针状发热体及具有该针状发热体的气溶胶产生装置。
 技术解决方案
本发明解决其技术问题所采用的技术方案是：构造一种针状发热体，包括可导电的外管以及设置于所述外管中的发热线路和测温线路，所述发热线路和所述测温线路的一极均与所述外管导电连接。
在一些实施例中，所述发热线路采用金属PTC材料制成。
在一些实施例中，所述发热线路的电阻温度系数在1500-3500ppm之间。
在一些实施例中，所述测温线路采用金属PTC材料制成，或者，所述测温线路采用热偶结构。
在一些实施例中，所述发热体还包括与所述外管导电连接的第一电极引线。
在一些实施例中，所述第一电极引线焊接于所述外管的底部外侧。
在一些实施例中，所述发热体还包括嵌置于所述外管顶部的针头。
在一些实施例中，所述发热线路和所述测温线路的一极均压合于所述针头和所述外管之间，从而与所述外管导通。
在一些实施例中，所述针头包括嵌置于所述外管中的柱状嵌入部以及连接于所述嵌入部上方的锥状导入部。
在一些实施例中，所述发热体还包括设置于所述外管中的绝缘棒，所述发热线路和所述测温线路绕设于所述绝缘棒外。
在一些实施例中，所述发热线路设置于所述测温线路的外层。
在一些实施例中，所述发热线路和所述测温线路之间通过浸渍或喷涂形成有绝缘层。
在一些实施例中，所述发热体还包括与所述发热线路的另一极导电连接的第二电极引线以及与所述测温线路的另一极导电连接的第三电极引线。
在一些实施例中，所述外管的材质为耐高温合金或金属材料。
在一些实施例中，所述外管的内部填充有耐高温绝缘介质，外部涂覆有陶瓷涂层。
在一些实施例中，所述发热体还包括基座，所述外管的下端插设于所述基座上。
在一些实施例中，所述基座为陶瓷材质。
在一些实施例中，所述外管的下端通过陶瓷涂料焊接于所述基座。
本发明还提供一种气溶胶产生装置，包括上述任一项所述的发热体。
 有益效果
实施本发明至少具有以下有益效果：发热线路和测温线路的一极均与外管导通，发热线路和测温线路共用一极，从而可减少发热体中所需电极引线的数量。
 附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明一些实施例中发热体的立体结构示意图；
图2是图1所示发热体的剖面结构示意图；
图3是图1所示发热体的分解结构示意图；
图4是本发明一些实施例中气溶胶产生装置的立体结构示意图。
 本发明的实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
如图1-3所示，本发明一些实施例中的针状发热体1可包括可导电的外管11、嵌置于外管11顶部的针头12、沿纵向设置于外管11中的绝缘棒14、设置于外管11中且一极与外管11导电连接的发热线路15和测温线路、与外管11导电连接的第一电极引线17、与发热线路15的另一极导电连接的第二电极引线18、与测温线路的另一极导电连接的第三电极引线19以及设置于外管11底部的基座13。发热线路15和测温线路的一极与外管11导通，进而与第一电极引线17导通，发热线路15和测温线路共用一极，从而减少了发热体中电极引线的数量。此外，第一电极引线17由外管11引出，可增大各电极引线之间的距离。
绝缘棒14可采用耐高温绝缘材料制成，例如耐高温绝缘陶瓷材料制成，其大致可呈长圆柱状并可包括从上往下依次连接的第一段141、第二段142、第三段143。第二段142的直径大于第一段141和第三段143的直径，并小于外管11的内径。第一段141可紧密地嵌置于针头12中固定，第一段141和第二段142之间形成的台阶面可抵靠于针头12的底面上，第三段143可紧密地嵌置于基座13中固定。
发热线路15和测温线路可沿轴向螺旋缠绕于第二段142外。发热线路15的作用是通电发热后加热气溶胶产生基质，其可采用金属PTC（Positive Temperature Coefficient，正温度系数）材料制成，该材料随温度升高电阻呈上升趋势。根据用户需求，发热线路15的电阻温度系数可在1500-3500ppm之间选择。测温线路可采用金属PTC材料制成，或者其也可以采用热偶结构。
发热线路15和测温线路可采用层间结构，具体地，测温线路位于内层，发热线路15位于外层。制造时，先将测温线路绕制固定于绝缘棒14，通过浸渍或喷涂形成绝缘层；烧结固化后，再绕制发热线路15；最后，通过顶部针头12和底部基座13进行固定。与发热线路15的下端焊接导通的第二电极引线18以及与测温线路的下端焊接导通的第三电极引线19随绝缘棒14引出。
针头12可采用耐高温合金或金属材料制成，例如不锈钢等。针头12在一些实施例中可包括位于上部的导入部121以及位于下部的嵌入部122。导入部121呈圆锥状，利于插入到气溶胶产生基质中。导入部121的大端直径与外管11的外径一致，并大于嵌入部122的外径。嵌入部122呈圆柱状并紧密地嵌置于外管11中，导入部121与嵌入部122之间形成的台阶面抵紧于外管11的上端面上。发热线路15和测温线路的上端通过针头12的导入部121与外管11压合从而与外管11导通，进而与第一电极引线17导通。第一电极引线17焊接于外管11的底部外侧面，从而与外管11导通。
外管11呈圆管状，其可采用耐高温合金或金属材料制成，例如不锈钢等。外管11的内部填充有耐高温绝缘介质，外部涂覆有陶瓷涂层。基座13可以为陶瓷结构件，其可通过陶瓷涂料焊接于外管11。基座13的顶面下凹形成有安装槽130，外管11嵌置于安装槽130中，外管11的底面可抵靠于安装槽130的槽底面上。基座13的底面上凹形成有与安装槽130相连通的电极孔131，电极孔131至少有三个，分别供第一电极引线17、第二电极引线18、第三电极引线19穿过。
如图4所示，本发明一些实施例中的气溶胶产生装置大致可呈方形柱状并包括壳体2、设置于壳体2内的发热体1以及设置于壳体2内并与发热体1电性连接的电池，气溶胶产生基质3可从壳体2的顶部插入到壳体2中。发热体1的上端插入到气溶胶产生基质3中，在通电升温后对气溶胶产生基质3进行烘烤加热，形成可供用户抽吸的烟雾。可以理解地，该气溶胶产生装置并不局限于呈方形柱状，其也可以呈圆柱状等其他形状。
发热体1的第一电极引线17可与电池的正极电性连接，发热体1的第二电极引线18、第三电极引线19与电池的负极电性连接；或者，发热体1的第一电极引线17也可与电池的负极电性连接，发热体1的第二电极引线18、第三电极引线19与电池的正极电性连接。
可以理解地，上述各技术特征可以任意组合使用而不受限制。
以上实施例仅表达了本发明的优选实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制；应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，可以对上述技术特点进行自由组合，还可以做出若干变形和改进，这些都属于本发明的保护范围；因此，凡跟本发明权利要求范围所做的等同变换与修饰，均应属于本发明权利要求的涵盖范围。

Claims (19)

  1. 一种针状发热体，其特征在于，包括可导电的外管（11）以及设置于所述外管（11）中的发热线路（15）和测温线路，所述发热线路（15）和所述测温线路的一极均与所述外管（11）导电连接。
  2. 根据权利要求1所述的发热体，其特征在于，所述发热线路（15）采用金属PTC材料制成。
  3. 根据权利要求2所述的发热体，其特征在于，所述发热线路（15）的电阻温度系数在1500-3500ppm之间。
  4. 根据权利要求1所述的发热体，其特征在于，所述测温线路采用金属PTC材料制成，或者，所述测温线路采用热偶结构。
  5. 根据权利要求1所述的发热体，其特征在于，所述发热体还包括与所述外管（11）导电连接的第一电极引线（17）。
  6. 根据权利要求5所述的发热体，其特征在于，所述第一电极引线（17）焊接于所述外管（11）的底部外侧。
  7. 根据权利要求1所述的发热体，其特征在于，所述发热体还包括嵌置于所述外管（11）顶部的针头（12）。
  8. 根据权利要求7所述的发热体，其特征在于，所述发热线路（15）和所述测温线路的一极均压合于所述针头（12）和所述外管（11）之间，从而与所述外管（11）导通。
  9. 根据权利要求7所述的发热体，其特征在于，所述针头（12）包括嵌置于所述外管（11）中的柱状嵌入部（122）以及连接于所述嵌入部（122）上方的锥状导入部（121）。
  10. 根据权利要求1所述的发热体，其特征在于，所述发热体还包括设置于所述外管（11）中的绝缘棒（14），所述发热线路（15）和所述测温线路绕设于所述绝缘棒（14）外。
  11. 根据权利要求10所述的发热体，其特征在于，所述发热线路（15）设置于所述测温线路的外层。
  12. 根据权利要求11所述的发热体，其特征在于，所述发热线路（15）和所述测温线路之间通过浸渍或喷涂形成有绝缘层。
  13. 根据权利要求1所述的发热体，其特征在于，所述发热体还包括与所述发热线路（15）的另一极导电连接的第二电极引线（18）以及与所述测温线路的另一极导电连接的第三电极引线（19）。
  14. 根据权利要求1-13任一项所述的发热体，其特征在于，所述外管（11）的材质为耐高温合金或金属材料。
  15. 根据权利要求1-13任一项所述的发热体，其特征在于，所述外管（11）的内部填充有耐高温绝缘介质，外部涂覆有陶瓷涂层。
  16. 根据权利要求1-13任一项所述的发热体，其特征在于，所述发热体还包括基座（13），所述外管（11）的下端插设于所述基座（13）上。
  17. 根据权利要求16所述的发热体，其特征在于，所述基座（13）为陶瓷材质。
  18. 根据权利要求16所述的发热体，其特征在于，所述外管（11）的下端通过陶瓷涂料焊接于所述基座（13）。
  19. 一种气溶胶产生装置，其特征在于，包括权利要求1-18任一项所述的发热体。
PCT/CN2020/134299 2020-12-07 2020-12-07 针状发热体及气溶胶产生装置 WO2022120526A1 (zh)

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