WO2021243843A1 - 加热组件、雾化芯及气溶胶生成装置 - Google Patents

加热组件、雾化芯及气溶胶生成装置 Download PDF

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Publication number
WO2021243843A1
WO2021243843A1 PCT/CN2020/108189 CN2020108189W WO2021243843A1 WO 2021243843 A1 WO2021243843 A1 WO 2021243843A1 CN 2020108189 W CN2020108189 W CN 2020108189W WO 2021243843 A1 WO2021243843 A1 WO 2021243843A1
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WIPO (PCT)
Prior art keywords
substrate
heating element
heating assembly
air
heating
Prior art date
Application number
PCT/CN2020/108189
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English (en)
French (fr)
Inventor
邱伟华
Original Assignee
常州市派腾电子技术服务有限公司
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Filing date
Publication date
Application filed by 常州市派腾电子技术服务有限公司 filed Critical 常州市派腾电子技术服务有限公司
Priority to GB2218242.2A priority Critical patent/GB2611209A/en
Publication of WO2021243843A1 publication Critical patent/WO2021243843A1/zh
Priority to US18/075,390 priority patent/US20230094947A1/en

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F47/00—Smokers' requisites not otherwise provided for
    • 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
    • A24F40/10—Devices using liquid inhalable precursors

Definitions

  • the utility model relates to the technical field of aerosol generating devices, in particular to a heating assembly, an atomizing core and an aerosol generating device.
  • the aerosol generating device is mainly composed of two parts, the atomization core and the battery assembly.
  • the atomization core generally includes an atomization core and a liquid storage cavity.
  • the liquid storage cavity stores smoke liquid.
  • the atomization core draws smoke liquid from the liquid storage cavity and atomizes to form smoke.
  • the liquid guide and heating components in the atomization core are mist.
  • the core component of chemical technology which plays a decisive role in the taste of aerosol generating device products.
  • the heating assembly is used for heating the e-liquid delivered from the liquid guide to the heating assembly, so as to atomize the e-liquid to generate smoke.
  • the heat distribution in different regions of the heating assembly commonly used in the prior art cannot be controlled, and the heat loss is severe, which further seriously reduces the atomization efficiency.
  • the edge area of the heating assembly is provided with electrical contacts connected to the external power source. Because the temperature of the edge area of the heating assembly in the prior art is also very high, the heating assembly in the prior art is in electrical contact with each other. The heat resistance of the parts is required to be higher.
  • the first aspect of the present invention provides a heating assembly that can limit heat loss, improve atomization efficiency, and has low requirements on the heat resistance of electrical contacts.
  • the heating assembly is used in an aerosol generating device and includes
  • At least one heating element the heating element being formed on the substrate
  • At least two electrical contacts are formed on the substrate, and the electrical contacts are electrically connected to the heating element;
  • At least one heat blocking structure formed on the substrate and located between the heating element and the electrical contact.
  • the heating element is arranged in the center of the substrate, and the electrical contact is arranged on the edge of the substrate.
  • the heat blocking structure is located on one side of the heating element, and at least two of the electrical contacts are located on an end of the substrate away from the heating element.
  • the heat blocking structure is an air cavity.
  • a set of air cavities are formed on both sides of each heating element, and one electrical contact is formed on a side of each set of air cavities away from the heating element.
  • the heating assembly is formed with a cold zone, a hot zone, and a transition zone, the heating element is arranged in the hot zone, the electrical contact is arranged in the cold zone, and the heat barrier structure is arranged In the transition zone.
  • the substrate includes a first main surface and a second main surface that are opposed to each other, and two mutually perpendicular directions are defined in a cross section parallel to the first main surface or the second main surface: the first direction and the second main surface.
  • the substrate In the second direction, the substrate includes two opposed first sides in the first direction, and includes two opposed second sides in the second direction, and in the first direction ,
  • Each of the air chambers includes two opposed third sides, and in the second direction, each of the air chambers includes two opposed fourth sides, and two of the third sides The side is parallel to the two first side edges, and the two fourth side edges are parallel to the two second side edges.
  • the distance from the side closest to the second side of the same side of the air cavity adjacent to the second side to the second side adjacent to it is defined as W 1
  • the distance between the two fourth sides of each air cavity is W 2
  • the distance between two adjacent air cavities is W 3
  • m is the air cavity
  • the number of, m is a positive integer and m ⁇ 1.
  • the distance between the edges of opposite sides defining the hot zone is L 1
  • the distance between the two third side edges of each air cavity is The distance is L 2
  • the heating assembly further includes a plurality of release holes, which penetrate the substrate and are located in the hot zone.
  • the second aspect of the present invention provides an atomization core, the atomization core includes a liquid guide, characterized in that, the atomization core also includes the heating assembly of any one of the first aspect of the present invention .
  • the second aspect of the present invention provides an aerosol generating device, which includes a battery assembly, an air flow channel, and the atomizing core according to the second aspect of the present invention; the air flow channel is connected to the atomizing cavity, and the The air flow channel is used for the aerosol flowing out of the atomization cavity to circulate to the outside for human inhalation; the battery assembly is electrically connected to the heating element, and the battery assembly is used to provide the heating element with gas
  • the sol forms the electrical energy required for the atomization of the substrate.
  • An aerosol generating device comprising a battery assembly, an air flow channel, and an atomization core as described above; the air flow channel is in communication with the atomization cavity, and the air flow channel is used for the air flow out of the atomization cavity
  • the aerosol circulates to the outside for human inhalation; the battery assembly is electrically connected to the heating element, and the battery assembly is used to provide the heating element with electrical energy required to atomize the aerosol into a matrix.
  • the heating assembly provided by the utility model includes a heating element, a heat blocking structure (air cavity) and an electrical contact.
  • the air cavity is arranged between the electrical contact and the heating element. Because the air cavity is filled with air, the thermal conductivity of the air is low. Therefore, the air cavity can limit the heat loss generated by the heating element, and prevent the heat generated by the heating element from being rapidly transferred to the electrical contact, causing the temperature of the electrical contact to be too high, thereby not only Increasing the atomization efficiency of the atomizing core and the aerosol generating device can also reduce the requirements of the heating assembly, the atomizing core and the aerosol generating device on the heat resistance of the electrical contacts.
  • Fig. 1 is a schematic cross-sectional view of an aerosol generating device provided by a preferred embodiment of the present invention.
  • Fig. 2 is a top view of the heating assembly shown in Fig. 1.
  • Figure 3 is a schematic diagram of the resistance of a heating assembly.
  • Fig. 4 is a top view of another heating assembly shown in Fig. 1.
  • Fig. 5 shows the infrared (IR) characteristics of the heating assembly shown in Fig. 4 operating at 550°C.
  • Figure 6 is a top view of another heating assembly.
  • Aerosol generating device 100 Atomizing core 110 Housing components 10 Reservoir 13 Filling port 131 Outlet 132 Atomizing cavity 14
  • the first embodiment of the present invention provides an aerosol generating device 100
  • the aerosol generating device 100 includes a housing assembly 10, an atomizing core 30 and a battery assembly 40.
  • the atomizing core 30 and the battery assembly 40 are contained in the housing assembly 10, and the battery assembly 40 is electrically connected to the atomizing core 30.
  • the housing assembly 10 includes a liquid storage cavity 13, an atomization cavity 14, a battery cavity 15 and an air flow channel 16.
  • the aerosol generating device 100 further includes an atomizing core 110, wherein the atomizing core 110 includes the liquid storage cavity 13, the atomizing cavity 14 and the atomizing core 30. Therefore, the aerosol generating device 100 may also include the battery cavity 15, the air flow channel 16, the atomizing core 110 and the battery assembly 40.
  • the battery cavity 15 may not be included in the housing assembly 10, but may be detachably installed with the housing assembly 10. That is, the battery assembly 40 and the atomizing core 110 are detachably installed together.
  • the atomization core 110 may be provided separately from the liquid storage cavity 13, for example, the atomization core 110 and the battery assembly 40 are installed together, and the storage is provided.
  • the liquid storage device of the liquid chamber 13 is separately provided.
  • the liquid storage cavity 13 is in communication with the atomization cavity 14, and the atomization cavity 14 is in communication with the air flow channel 16.
  • the liquid storage cavity 13 is used for storing smoke liquid.
  • the atomization cavity 14 is used for accommodating the atomization core 30.
  • the battery cavity 15 is used for accommodating the battery assembly 40.
  • the air flow channel 16 is used for the smoke flowing out of the atomization cavity 14 to circulate to the outside for human inhalation.
  • a liquid injection port 131 is formed on the outer wall of the liquid storage cavity 13, and a liquid outlet 132 is formed on the inner wall of the liquid storage cavity 13.
  • the liquid injection port 131 is used to inject smoke liquid into the liquid storage cavity 13.
  • the liquid outlet 132 is in fluid communication with the atomizing core 30.
  • the liquid storage cavity 13 communicates with the atomization cavity 14 through the liquid outlet 132.
  • the smoke liquid in the liquid storage cavity 13 enters the atomization core 30 through the liquid outlet 132, and the atomization core 30 is used to atomize the smoke liquid to generate smoke.
  • a smoke outlet 141 is formed on the wall of the atomization cavity 14.
  • the atomization cavity 14 is in communication with the air flow channel 16 through the smoke outlet 141.
  • the smoke outlet 141 is used to make the smoke formed by atomizing the smoke liquid into the atomizing core 30 through the atomizing core 30 flow into the air flow channel 16.
  • the wall of the air flow channel 16 has an air outlet 161.
  • the air outlet 161 is used to allow the smoke to flow from the air flow channel 16 to the outside for human inhalation.
  • the housing assembly 10 is further formed with an air inlet (not shown).
  • the external airflow enters from the air inlet, and the atomizing core mist
  • the smoke obtained from the chemical process passes through the air flow channel 16 along with the air flow and is led out from the air outlet 161 for human inhalation.
  • the atomizing core 30 is used to atomize the smoke liquid transferred to the atomizing core 30 into smoke.
  • the atomization core 30 includes a heating element 31 and a liquid guide 32.
  • the heating assembly 31 is formed on the liquid guide 32, and the liquid guide 32 is fixed on the inner wall of the atomization cavity 14 and is in fluid communication with the liquid outlet 132.
  • the liquid guide 32 is used to transfer the e-liquid in the liquid storage cavity 13 to the heating assembly 31 and temporarily store the e-liquid.
  • the liquid guide 32 includes an oil suction surface 321 and an atomization surface 322.
  • the oil absorbing surface 321 faces the liquid outlet 132, and the atomizing surface 322 is opposite to the oil absorbing surface 321.
  • the heating assembly 31 is fixed on the atomizing surface 322 of the liquid guide 32 to heat and atomize the smoke liquid transferred from the liquid guide 32 to the heating assembly 31.
  • the heating assembly 31 is formed on the liquid guiding member 32 in a manner of directly fixing, wrapping, winding, or the like. In this embodiment, the heating assembly 31 is directly fixed on the liquid guide 32.
  • the liquid guiding member 32 is an element that has a function of absorbing liquid and/or transmitting smoke liquid, such as cotton, glass fiber, porous ceramics, and the like.
  • the battery assembly 40 is contained in the battery cavity 15 and is electrically connected to the heating assembly 31.
  • the battery assembly 40 is used to provide the heating assembly 31 with electric energy required to atomize the smoke liquid.
  • the aerosol generating device 100 further includes a cigarette holder 50, which communicates with the airflow channel 16 through the air outlet 161, and flows out through the air outlet 161 of the airflow channel 16. The smoke flows out through the cigarette holder for human inhalation.
  • the aerosol generating device 100 may not include a cigarette holder 50.
  • the aerosol generating device 100 further includes a heat insulation layer 60 disposed on the inner wall of the air flow channel 16.
  • the heat insulation layer 60 is beneficial to prevent the heat in the air flow channel 16 from being dissipated, thereby preventing the smoke caused by the temperature in the air flow channel 16 from dropping too fast on the inner wall of the air flow channel 16 to quickly cool and condense into smoke liquid .
  • the aerosol generating device 100 further includes a liquid absorbing member 70, the liquid absorbing member 70 is disposed on the heat insulation layer 60, and the liquid absorbing member 70 is used for absorbing condensed smoke. liquid.
  • the liquid absorbing member 70 has a hollow cylindrical shape or other shapes.
  • the liquid absorbing member 70 is made of porous material, for example, super absorbent resin, sponge, cotton, paper, porous ceramic or other porous materials.
  • the aerosol generating device 100 further includes a liquid absorbing member 70 disposed on the inner wall of the air flow channel 16 (not shown).
  • the first embodiment of the present invention provides a heating assembly 31a.
  • the heating assembly 31a includes a substrate 311, a heat blocking structure 314 disposed on the substrate 311, at least one heating element 315, and at least two Electric contacts 317.
  • the heat blocking structure 314 is arranged between the heating element 315 and the electrical contact 317.
  • the heating element 315 is used to generate heat to heat and atomize the smoke liquid transferred from the liquid guide 32 to the heating assembly 31a.
  • the electrical contact 317 is electrically connected to the heating element 315.
  • the heat blocking structure 314 is used to reduce or prohibit the heat transfer between the electrical contact 317 and the heating element 315, so as to limit the heat loss generated by the heating element 315 and prevent the heating element 315 from generating heat.
  • the rapid transfer of heat to the electrical contact 317 causes the temperature of the electrical contact 317 to be too high.
  • the forms of heat transfer include radiation, conduction, and convection.
  • the heating element 315 and the electrical contact 317 are electrically connected through a conductive circuit 318, and the conductive circuit 318 includes, but is not limited to, a metal paste, a metal film, and a wire.
  • the heat blocking structure 314 may be a structure with low thermal conductivity, such as a heat insulation layer, a heat insulation member, or an air cavity, and the heat insulation layer may be formed on the surface of the substrate 311 or formed on the substrate 311.
  • the heat blocking structure 314 is composed of a material with low thermal conductivity, or a part of the substrate 311 is directly made of a material with low thermal conductivity.
  • the processes that can be used to form the heat blocking structure 314 include, but are not limited to, chemical etching, laser etching, electroplating, physical vapor deposition, and chemical vapor deposition.
  • the heat blocking structure 314 is an air cavity. Therefore, in this embodiment, the heat blocking structure 314 is at least one set of air cavities 314. The air cavity 314 penetrates the substrate 311 along the thickness direction of the substrate 311, and the air cavity 314 is in contact with outside air.
  • the substrate 311 is roughly in the shape of a thin sheet or a thin plate, and has a first main surface A 1 and a second main surface A 2 opposite to each other. It can be understood that the first main surface A 1 and the second main surface A 2 may be round. Shapes, ellipses, triangles, rectangles, trapezoids, pentagons, etc. can also be polygons, and there is no restriction here. Optionally, the first main surface A 1 and the second main surface A 2 are substantially planar.
  • the material for preparing the substrate 311 may be metal oxide, nitride, carbide, and the like.
  • the substrate 311 is made of ceramic material, and further, the material of the substrate 311 is aluminosilicate.
  • the substrate 311 On the cross section of the substrate 311 parallel to the first main surface A 1 or the second main surface A 2 , two mutually perpendicular directions are defined: a first direction X 1 and a second direction X 2.
  • the substrate 311 is 1 includes a first direction X on a first side 3111 of two oppositely disposed, X 2 comprises two opposite second sides 3112 disposed in the second direction.
  • the first main surface of the substrate 311 A 1 is rectangular, and the two side edges of the first 3111 and second side 3112 of the two vertical connection.
  • the substrate 311 of the first main surface A 1 can also be in other polygonal or circular shape, at this time, the substrate 311 further includes other side, the two first side 3111 The two second side edges 3112 are respectively connected to at least one other side edge. If the cross section of the substrate 311 is circular, the first side 3111 can be simplified to two tangent points in the first direction X 1 , and the second side 3112 can be simplified to two tangent points in the second direction X 2 Cut-off point.
  • a third direction X 3 is defined along the vertical direction of the first main surface A 1 , and the third direction X 3 is the thickness direction of the substrate 311.
  • the thickness of the substrate 311 is about 0.4 mm, the total width is 12.0 mm, and the thermal conductivity is about 3 Wm -1 K -1 .
  • the heating assembly 31a includes two sets of four air chambers 314 and two electrical contacts 317. Two groups of the air cavities 314 are respectively arranged on both sides of the heating element 315, and each group of the air cavities 314 is provided with an electrical contact 317 on a side away from the heating element 315.
  • the heating element 315 is disposed in the center of the substrate 311, and the electrical contact 317 is disposed on the edge of the substrate.
  • two air cavities 314 in each group are arranged side by side in the second direction X 2.
  • each of said third air chamber 314 comprises two oppositely disposed sides 3141.
  • each air cavity 314 includes two opposite fourth sides 3142.
  • the two third sides 3141 are parallel to the two first sides 3111, and the two fourth sides 3142 are parallel to the two second sides 3112.
  • the first main surface of the substrate 311 A 1 is rectangular, the two first side 3111 and second side 3112 of the two vertical connection.
  • the cross section of the air cavity 314 on the first main surface A 1 is also rectangular, and the two third sides 3141 are perpendicularly connected to the two fourth sides 3142.
  • the first direction X 1 is the length direction
  • the second direction X 2 is the width direction.
  • the cross section of the air chamber 314 in the first main surface A 1 may be other polygonal form or circular shape, at this time, then the air chamber 314 also includes other side, the two The third side 3141 and the two fourth sides 3142 are respectively connected to at least one other side. If the cross section of the air cavity 314 on the first main surface A 1 is circular, the third side 3141 can be simplified as two tangent points in the first direction X 1 , and the fourth side 3142 It can be simplified to two tangent points in the second direction X 2.
  • said heating assembly 31a into at least a cold zone 303, at least a transition region 302 and at least one hot zone 301.
  • one end of the transition zone 302 is connected to the cold zone 303, and the other end is connected to the hot zone 301.
  • the cold zone 303 refers to the extension line RR′ where the third side 3141 of the at least one air cavity 314 adjacent to the electrical contact 317 is located and the adjacent The area enclosed by the first side 3111 of the electrical contact 317.
  • the transition zone 302 refers to the area enclosed by the extension lines RR′ and QQ′ where the two second side edges 3112 and at least one of the air chambers 314 oppositely arranged two third side edges 3141 are located.
  • the hot zone 301 refers to the extension line PP′ and the third side 3141 adjacent to the heating element 315 of the two second side edges 3112 and the air cavity 314 on opposite sides of the heating element 315
  • the area enclosed by QQ′ may refer to the extension line PP′ where the third side 3141 of the at least one air cavity 314 adjacent to the heating element 315 is located and the adjacent The area enclosed by the first side 3111 of the heating element 315.
  • the electrical contact 317 is located in the cold zone 303
  • the air cavity 314 is located in the transition zone 302
  • the heating element 315 is located in the hot zone 301.
  • the heating assembly 31a is divided into two cold zones 303, two transition zones 302, and one hot zone 301.
  • a transition zone 302 is provided between the hot zone 301 and the cold zone 303.
  • the hot zone 301 refers to the extension line PP′ and the third side 3141 adjacent to the heating element 315 of the two second sides 3112 and the air cavity 314 The area enclosed by QQ'.
  • the second side adjacent the second side defines an air chamber 314 3112 ipsilateral side closest to the second side adjacent thereto 3112
  • the distance 3112 is W 1
  • the distance between the two fourth sides 3142 of each air cavity 314 is W 2
  • the distance between two adjacent air cavities 314 is W 3
  • each air cavity 314 on the first main surface A 1 as A 1
  • the total cross-sectional area of the first main surface A 1 of the substrate 311 as A 2
  • the total cross-sectional area of the air cavity 314 The ratio of the area mA 1 to the total cross-sectional area A 2 of the substrate 311 is the mass index E air cavity of the heating assembly 31 a, and the mass index E air cavity can quantify the thermal decoupling efficiency of the heating assembly 31 a.
  • the thickness of the heating element 31a is 0.1mm ⁇ when 5mm
  • the air chamber 314 of air chamber E mass index must be greater than 15%, to ensure that the air chamber 314 can effectively block the heat
  • the heat of the zone 301 is transferred into the cold zone 303.
  • the distance between the edges of the two opposite sides of the hot zone 301 is defined as L 1 , and two of each air cavity 314
  • the distance between the third sides 3141 is L 2 , optionally, L 2 /L 1 >60%.
  • L 2 is 6 mm. This structure can achieve effective thermal decoupling.
  • the heating element 315 may be a structure such as an embedded thick film resistance heater, a heating coating, a heating coil, a heating sheet, and a heating net.
  • the material for preparing the heating element 315 may be precious metal or common metal or conductive oxide or the like.
  • the precious metal may be ruthenium, platinum, gold, silver, palladium or their alloys.
  • the common metal may be copper or nickel or the like.
  • the conductive oxide may be ruthenium oxide or the like.
  • the material for preparing the heating element 315 is platinum.
  • the thermal conductivity of the heating element 315 is approximately 72 Wm -1 K -1 .
  • the heating element 315 is two embedded thick film resistance heaters.
  • the heating element 315 has a thickness of 0.01 mm and a width of 0.6 mm.
  • L 3 should be long enough to facilitate the installation of the electric Contact 317.
  • the area of the electrical contact 317 must be large enough to be compatible with the standard electrical contacts in the atomizing core 30 in the aerosol generating device 100.
  • said heating assembly 31a further includes a plurality of relief holes 316, the relief hole 316 3 through the X-direction along the third substrate 311 and located within the hot zone 301.
  • the release hole 316 is arranged opposite to the liquid guide 32 and is used to release the smoke generated by the atomization of the heating element 315 into the atomization cavity 14.
  • each release hole 316 has the cross-sectional area of A 3.
  • the total cross-sectional area nA 3 of the release hole 316 and the cross-sectional area A 2 of the substrate The ratio satisfies: 0.03% ⁇ nA 3 /A 2 ⁇ 9.00%.
  • n is the number of release holes 316
  • n is a positive integer and >0.
  • the ratio of the total cross-sectional area of the release hole 316 to the cross-sectional area of the substrate 311 is a quality factor of the release hole 316, which can be used to characterize the effectiveness of the release hole 316.
  • the cross section corresponding to the cross-sectional area is parallel to the first main surface A 1 or the first main surface A 2 .
  • each release hole 316 Define the radius of each release hole 316 as r 1 , then optionally, 0.01 ⁇ r 1 /L 1 ⁇ 0.1. This arrangement is beneficial to release the smoke generated by the atomization of the heating element 315 into the atomization cavity 14.
  • the edge of the release hole 316 adjacent to the first side edge 311 is defined to the second edge adjacent to it.
  • the distance of the side 3112 is L 4 , then L 4 /L 1 >10%.
  • the second embodiment of the present invention provides a heating assembly 31b
  • the structure of the heating assembly 31b is similar to the structure of the heating assembly 31a, the difference is that the air cavity 314 is only provided in the One side of the heating element 315.
  • the electrical contacts 317 are all arranged on one end of the substrate 311, and are not separately arranged on both ends of the substrate 311, so that the heating assembly 31b has a larger heating area.
  • the resistance value of the heating element 31a can be calculated by the following formula:
  • R thermal is the absolute thermal resistance
  • L bridge is the length of the air cavity 314 in the first direction X 1 (that is, L 2 in FIG. 2 )
  • k n is the thermal conductivity of the material or air
  • T is the heating component
  • the thickness of 31a, W i is the width of each part, in this embodiment, W i corresponds to the above-mentioned W 1 , W 2 , and W 3 .
  • the total thermal resistance R bridge of the heating assembly 31a is composed of several resistors connected in parallel, including the resistances of the two sets of air cavities 314 (R air1 + R air2 ), and the resistance between the two sets of air cavities 314 the substrate 311 resistor R center, the two resistors, and the resistors R side1 R side2 substrate 311 and conductive traces 3111 between a first side edge 314 and the air chamber corresponding to a resistance of R 318 and R Pt1 Pt2 .
  • the total width W of the substrate 311 is 12.0 mm
  • W 1 , W 2 , and W 3 are 3 mm, 4 mm, and 1 mm, respectively, and the thickness of the embedded thick film resistance heater is 0.01 mm, and the width
  • the length of the air cavity 314 is 0.6 mm, and the length of the air cavity 314 is 6 mm mm.
  • the thickness of the substrate 311 is about 0.4 mm
  • the total width is 12.0 mm
  • the thermal conductivity is about 3 Wm -1 K -1 .
  • the material of the embedded thick film resistance heater is platinum, and the thermal conductivity is about 72 Wm -1 K -1 .
  • the thermal conductivity of the air in the air cavity 314 is about 0.04 Wm -1 K -1 .
  • the thermal resistance of each air cavity 314 is 463 KW -1 .
  • FIG. 5 is an IR characteristic diagram of the heating assembly 31b shown in FIG. 4 operating at 550°C. It can be seen from the figure that the air cavity 314 is used to realize the transition between the heating element 315 and the electrical contact 317 of the heating assembly 31b, so that the temperature of the cold zone 303 can be maintained at 100°C.
  • the heating assembly 31b works in the hot zone maintained at a temperature of 550°C to 560°C. This shows that the heating assembly 31b has better heating uniformity and a lower level of heat transfer, so that the hot zone 301 where the heating element 315 is located and the cold zone 303 where the electrical contact 317 is located can be effectively separated .
  • a heating assembly 31c is provided.
  • the structure of the heating assembly 31c is similar to that of the heating assembly 31b. The only difference is that the two air chambers 314 are in X 1 on the first direction are arranged.
  • the heating assembly provided by the utility model includes a heating element, a heat blocking structure (air cavity) and an electrical contact piece.
  • the air cavity is arranged between the electrical contact piece and the heating element. Because the air cavity is filled with air, the thermal conductivity of the air is low. Therefore, the air cavity can limit the heat loss in the hot zone, and prevent the heat of the hot zone from being rapidly transferred to the cold zone, causing the temperature of the cold zone to be too high, thereby not only improving the atomization core And the atomization efficiency of the aerosol generating device can also reduce the requirements of the heating assembly, the atomizing core and the aerosol generating device on the heat resistance of the electrical contacts.
  • the utility model also provides a manufacturing method of the heating assembly, which includes:
  • Step one casting the substrate.
  • the mixture of ceramic powder and organic components is cast into a strip-shaped substrate with a thickness of 0.2 mm to 2 mm.
  • Step two processing the substrate to form the required structure.
  • the energy barrier structure is formed on the substrate by using a laser cutting or stamping process.
  • the energy barrier structure may be an air cavity, or a heat insulating member, or the like.
  • this step may also include using a laser cutting or stamping process to form release holes and/or electrical vias on the substrate.
  • Step three printing heating elements and electrical contacts on the substrate.
  • This step includes using a screen printing process to print heating elements (resistance heating materials) and electrical contacts in the required pattern form on a designated substrate to form a semi-finished product.
  • the electrical contact includes an electrical pad. Further, this step also includes printing on the substrate a conductive circuit connecting the heating element and the electrical contact.
  • step four the semi-finished product obtained in step three is dried.
  • Step five stack the semi-finished products obtained after drying in step four, wherein the heating element is embedded in the substrate, and the electrical contact is located on the surface of the substrate.
  • Step 6 after thermally compressing the semi-finished product obtained in step 5 at a temperature of 40°C-100°C, sinter it at a high temperature (800°C-1600°C) to remove organic matter and form a whole.

Abstract

一种加热组件（31），加热组件（31）包括一基板（311）；至少一发热元件（315），发热元件（315）形成在基板（311）上；至少两个电接触件（317），电接触件（317）形成在基板（311）上；电接触件（317）与发热元件（315）电连接；至少一热量阻隔结构（314），热量阻隔结构（314）形成在基板（311）上且位于发热元件（315）与电接触件（317）之间。还涉及一种雾化芯（30）及气溶胶生成装置（100）。提供的加热组件（31）、雾化芯（30）及气溶胶生成装置（100）能够限制热区的热量损失、避免冷区的温度过高，从而提高雾化效率并降低加热组件（31）、雾化芯（30）及气溶胶生成装置（100）对电接触件（317）的耐热性能的要求。

Description

加热组件、雾化芯及气溶胶生成装置 技术领域
本实用新型涉及气溶胶生成装置技术领域，尤其涉及一种加热组件、雾化芯及气溶胶生成装置。
背景技术
气溶胶生成装置主要由雾化芯和电池组件两部分组成。雾化芯一般包括雾化芯和储液腔，储液腔存储烟液，雾化芯从储液腔中吸取烟液进行雾化形成烟雾，雾化芯中的导液件及加热组件是雾化技术的核心部件，其对气溶胶生成装置产品的口感起决定性作用。所述加热组件用于加热从所述导液件中输送至所述加热组件上的烟液，以使所述烟液雾化，而产生烟雾。然而，现有技术中常用的加热组件的不同区域的热量分布不能调控，热量损失严重，进而严重降低了雾化效率。另外，在现有技术中，加热组件的边缘区域设置有连接外部电源的电接触件，因现有技术中的加热组件的边缘区域的温度也很高，如此现有技术的加热组件对电接触件的耐热性能要求较高。
实用新型内容
有鉴于此，本实用新型第一方面提供一种能够限制热量损失、提高雾化效率且对电接触件的耐热性能要求低的加热组件。
所述加热组件用于气溶胶生成装置，包括
一基板；
至少一发热元件，所述发热元件形成在所述基板上；
至少两个电接触件，所述电接触件形成在所述基板上,所述电接触件与所述发热元件电连接；
至少一热量阻隔结构，所述热量阻隔结构形成在所述基板上且位于所述发热元件与所述电接触件之间。
在一个实施方式中，所述发热元件设置在所述基板的中央，所述电接触件设置在所述基板的边缘。
在一个实施方式中，所述热量阻隔结构位于所述发热元件的一侧，至少两个所述电接触件均位于所述基板的远离所述发热元件的一端。
在一个实施方式中，所述热量阻隔结构为空气腔。
在一个实施方式中，每个所述发热元件的两侧分别形成有一组所述空气腔，每组所述空气腔的远离所述发热元件一侧形成有一个所述电接触件。
在一个实施方式中，所述加热组件形成有冷区、热区、过渡区，所述发热元件设置在所述热区，所述电接触件设置在所述冷区，所述热量阻隔结构设置在所述过渡区。
在一个实施方式中，在所述基板包括相对设置的第一主表面和第二主表面，在平行于第一主表面或第二主表面的截面定义两个相互垂直的方向：第一方向与第二方向，所述基板在所述第一方向上包括两个相对设置的第一侧边，在所述第二方向上包括两个相对设置的第二侧边，在所述第一方向上，每个所述空气腔包括两个相对设置的第三侧边，在所述第二方向上，每个所述空气腔包括两个相对设置的第四侧边，两个所述第三侧边平行于两个所述第一侧边，两个所述第四侧边平行于两个所述第二侧边。
在一个实施方式中，在所述第二方向上，定义邻近第二侧边的所 述空气腔最靠近同侧的第二侧边的边到与之邻近的所述第二侧边的距离为W 1，每个空气腔的两个所述第四侧边之间的距离为W 2，相邻两个所述空气腔之间的距离为W 3，所述基板的两个所述第二侧边之间的距离为W，则，W＝2W 1+mW 2+(m-1)W 3，mW 2/W＞40％，W 3/W 1＞150％，m为所述空气腔的数量，m为正整数且m≥1。
在一个实施方式中，在所述第一方向X 1上，定义热区的相对两侧边缘之间的距离为L 1，每个所述空气腔的两个所述第三侧边之间的距离为L 2，则，L 2/L 1＞60％。
在一个实施方式中，所述加热组件还包括多个释放孔，所述释放孔贯穿所述基板且位于所述热区内。
本实用新型的第二方面提供一种雾化芯，所述雾化芯包括一导液件，其特征在于，所述雾化芯还包括本实用新型第一方面任一项所述的加热组件。
本实用新型第二方面提供了一种气溶胶生成装置，包括电池组件、气流通道以及本实用新型第二方面所述的雾化芯；所述气流通道与所述雾化腔相连通，所述气流通道用于供从所述雾化腔流出的气溶胶流通至外界，以供人吸食；所述电池组件与所述发热元件电连接，所述电池组件用于给所述发热元件提供使气溶胶形成基质雾化所需的电能。
一种气溶胶生成装置，包括电池组件、气流通道以及如上所述的雾化芯；所述气流通道与所述雾化腔相连通，所述气流通道用于供从所述雾化腔流出的气溶胶流通至外界，以供人吸食；所述电池组件与所述发热元件电连接，所述电池组件用于给所述发热元件提供使气溶胶形成基质雾化所需的电能。
本实用新型提供的加热组件包括发热元件、热量阻隔结构(空气腔) 及电接触件，空气腔设置在电接触件与发热元件之间，因空气腔中充满空气，而空气的导热率较低，因此，所述空气腔可以限制所述发热元件产生的热量损失，并防止所述发热元件产生的热量向所述电接触件快速传递而导致所述电接触件的温度过高，从而不仅能够提高所述雾化芯及气溶胶生成装置的雾化效率，还能够降低所述加热组件、雾化芯及气溶胶生成装置对电接触件的耐热性能的要求。
附图说明
图1为本实用新型较佳实施方式提供的一种气溶胶生成装置的剖视示意图。
图2为图1所示的一种加热组件的俯视图。
图3为一种加热组件的电阻示意图。
图4为图1所示的另一种加热组件的俯视图。
图5为图4所示的加热组件在550℃工作的红外(IR)特性。
图6为另一种加热组件的俯视图。
主要元件符号说明
气溶胶生成装置 100
雾化芯 110
壳体组件 10
储液腔 13
注液口 131
出液口 132
雾化腔 14
烟雾出口 141
电池腔 15
气流通道 16
出气口 161
雾化芯 30
加热组件 31，31a，31b，31c
热区 301
过渡区 302
冷区 303
基板 311
第一侧边 3111
第二侧边 3112
第一主表面 A 1
第二主表面 A 2
热量阻隔结构/空气腔 314
第三侧边 3141
第四侧边 3142
发热元件 315
释放孔 316
电接触件 317
导液件 32
吸油面 321
雾化面 322
电池组件 40
烟嘴 50
隔热层 60
吸液件 70
如下具体实施方式将结合上述附图进一步说明本实用新型。
具体实施方式
下面将结合本实用新型实施方式中的附图1-6，对本实用新型实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅是本实用新型一部分实施方式，而不是全部的实施方式。基于本实用新型中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本实用新型保护的范围。
需要说明的是，当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中设置的元件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本实用新型的技术领域的技术人员通常理解的含义相同。本文中在本实用新型的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本实用新型。
请参阅图1，本实用新型第一实施方式提供一种气溶胶生成装置100，所述气溶胶生成装置100包括壳体组件10、雾化芯30及电池组件40。所述雾化芯30及所述电池组件40收容在所述壳体组件10内，所述电池组件40与所述雾化芯30电连接。
所述壳体组件10包括储液腔13、雾化腔14、电池腔15及气流通道16。
在一个实施方式中，气溶胶生成装置100还包括雾化芯110，其中，所述雾化芯110包括所述储液腔13、所述雾化腔14及所述雾化芯30。 从而，所述气溶胶生成装置100也可以包括所述电池腔15、所述气流通道16、所述雾化芯110及所述电池组件40。
在其他实施方式中，所述电池腔15也可以不包含在所述壳体组件10内，而是与所述壳体组件10可拆卸安装在一起。也即，所述电池组件40与所述雾化芯110可拆卸地安装在一起。
可以理解的，在其他实施方式中，所述雾化芯110可以与所述储液腔13分体设置，如所述雾化芯110与所述电池组件40安装在一起，而具有所述储液腔13的储液装置单独设置。
其中，所述储液腔13与所述雾化腔14相连通，所述雾化腔14与所述气流通道16相连通。所述储液腔13用于存储烟液。所述雾化腔14用于收容所述雾化芯30。所述电池腔15用于收容所述电池组件40。所述气流通道16用于供从所述雾化腔14流出的烟雾流通至外界，以供人吸食。
在一个实施方式中，所述储液腔13的外壁上形成有注液口131，所述储液腔13的内壁上形成有出液口132。所述注液口131用于向所述储液腔13内注入烟液。所述出液口132与所述雾化芯30流体连通。所述储液腔13通过所述出液口132与所述雾化腔14连通。所述储液腔13内的烟液通过所述出液口132进入所述雾化芯30内，所述雾化芯30用于雾化烟液产生烟雾。
所述雾化腔14的壁上形成有烟雾出口141。所述雾化腔14与所述气流通道16通过所述烟雾出口141连通。所述烟雾出口141用于使得进入所述雾化芯30内的烟液经所述雾化芯30雾化形成的烟雾流入所述气流通道16内。
所述气流通道16的壁上具有出气口161。所述出气口161用于使 所述烟雾从所述气流通道16流至外界，以供人吸食。
在其他实施方式中，所述壳体组件10还形成有进气口(图未示)，在使用上述气溶胶生成装置100时，外界气流从所述进气口进入，所述雾化芯雾化所得的烟雾随气流一起经所述气流通道16并从所述出气口161导出，以供人吸食。
其中，所述雾化芯30用于将传输至所述雾化芯30的所述烟液雾化成烟雾。所述雾化芯30包括加热组件31及导液件32。所述加热组件31形成在所述导液件32上，所述导液件32固定在所述雾化腔14的内壁上且与所述出液口132流体连通。所述导液件32用于将储液腔13内的烟液传输至加热组件31并暂时存储所述烟液。所述导液件32包括一吸油面321及一雾化面322。所述吸油面321面向所述出液口132，所述雾化面322与所述吸油面321相背。所述加热组件31固定在所述导液件32的所述雾化面322上，以加热并雾化从所述导液件32中传输至所述加热组件31上的烟液。
具体地，所述加热组件31以直接固定、包裹、缠绕等方式形成在所述导液件32上。在本实施方式中，所述加热组件31直接固定在所述导液件32上。
其中，所述导液件32是具有吸液和/或传输烟液作用的元件，例如棉花、玻纤、多孔陶瓷等。
所述电池组件40收容在所述电池腔15内且与所述加热组件31电连接。所述电池组件40用于给所述加热组件31提供使烟液雾化所需的电能。
在本实施方式中，所述气溶胶生成装置100还包括一烟嘴50，所述烟嘴50通过所述出气口161与所述气流通道16相连通，经所述气 流通道16的出气口161流出的烟雾，经所述烟嘴流出，以供人吸食。在其他实施方式中，所述气溶胶生成装置100还可以不包括烟嘴50。
在另一实施方式中，所述气溶胶生成装置100还包括一隔热层60，所述隔热层60设置在所述气流通道16的内壁上。所述隔热层60有利于防止所述气流通道16内的热量散失，从而防止因气流通道16内的温度降低过快而导致的烟雾在所述气流通道16的内壁上快速冷却凝结成烟液。
在另一实施方式中，所述气溶胶生成装置100还包括一吸液件70，所述吸液件70设置在所述隔热层60上，所述吸液件70用于吸收冷凝的烟液。其中，所述吸液件70呈中空的柱状或其他形状。所述吸液件70由多孔材料制成，例如，高吸水性树脂、海绵、棉花、纸、多孔陶瓷或其他多孔材料。
在另一实施方式中，所述气溶胶生成装置100还包括一吸液件70，所述吸液件70设置在所述气流通道16的内壁上(图未示)。
请参阅图2，本实用新型第一实施方式提供一种加热组件31a，所述加热组件31a包括基板311及设置在所述基板311上的热量阻隔结构314、至少一发热元件315及至少两个电接触件317。其中，所述热量阻隔结构314设置在所述发热元件315与所述电接触件317之间。所述发热元件315用于产生热量，以加热并雾化从所述导液件32中传输至所述加热组件31a上的烟液。所述电接触件317与所述发热元件315电性连接。所述热量阻隔结构314用于减弱或者禁止所述电接触件317与所述发热元件315之间的热量传递，以限制所述发热元件315产生的热量损失，并防止所述发热元件315产生的热量向所述电接触件317快速传递而导致所述电接触件317的温度过高。热量传递的形 式包括辐射、传导、对流。本实施方式中，所述发热元件315与所述电接触件317通过导电线路318电性连接，所述导电线路318包括但不限于金属浆料，金属薄膜，导线。其中，所述热量阻隔结构314可以为隔热层、隔热件或空气腔等导热率低的结构，所述隔热层可以形成在所述基板311的表面上，或者形成在所述基板311的内部，所述热量阻隔结构314由导热率低的材料组成，或者所述基板311的一部分直接由导热率低的材料制造。形成热量阻隔结构314可采用的工艺包括但不限于化学蚀刻，激光蚀刻，电镀，物理气相沉积，化学气相沉积。可选地，所述热量阻隔结构314为空气腔。因此，在本实施方式中，所述热量阻隔结构314为至少一组空气腔314。所述空气腔314沿着是基板311的厚度方向贯穿所述基板311，所述空气腔314与外界空气接触。
所述基板311大致呈薄片或者薄板状，并具有相对设置的第一主表面A 1和第二主表面A 2，可以理解的，第一主表面A 1和第二主表面A 2可以为圆形，椭圆形，也可以为三角形，矩形，梯形，五边形等多边形，此处不做限制。可选的，第一主表面A 1和第二主表面A 2大致呈平面状。
其中，制备所述基板311的材料可以为金属氧化物、氮化物、碳化物等。可选的，所述基板311为陶瓷材料，进一步地，所述基板311的材料为铝硅酸盐。
在所述基板311平行于第一主表面A 1或第二主表面A 2的截面上定义两个相互垂直的方向：第一方向X 1与第二方向X 2，所述基板311在所述第一方向X 1上包括两个相对设置的第一侧边3111，在所述第二方向X 2上包括两个相对设置的第二侧边3112。在本实施方式中，所述 基板311的第一主表面A 1呈矩形，此时两个所述第一侧边3111与两个所述第二侧边3112垂直连接。在其他实施方式中，所述基板311的第一主表面A 1也可以呈其他多边形或圆形等形状，此时，所述基板311还包括其他侧边，两个所述第一侧边3111与两个所述第二侧边3112分别与至少一个其他侧边相连接。若所述基板311的横截面为圆形，则第一侧边3111可以简化为第一方向X 1上的两个切点，第二侧边3112可以简化为第二方向X 2上的两个切点。沿着第一主表面A 1垂直方向定义第三方向X 3，第三方向X 3为所述基板311的厚度方向。
在本实施方式中，所述基板311的厚度约为0.4mm，总宽度为12.0mm，热导率约为3Wm -1K -1。在本实施方式中，所述加热组件31a包括两组共四个空气腔314及两个电接触件317。两组所述空气腔314分别设置在所述发热元件315的两侧，每组所述空气腔314的远离所述发热元件315的一侧均设置有一个所述电接触件317。在一个实施方式中，所述发热元件315设置在所述基板311的中央，所述电接触件317设置在所述基板的边缘。
在本实施方式中，每组的两个空气腔314在所述第二方向X 2上排列设置。
其中，在所述第一方向X 1上，每个所述空气腔314包括两个相对设置的第三侧边3141。在所述第二方向X 2上，每个所述空气腔314包括两个相对设置的第四侧边3142。两个所述第三侧边3141平行于两个所述第一侧边3111，两个所述第四侧边3142平行于两个所述第二侧边3112。
在本实施方式中，所述基板311的第一主表面A 1呈长方形，两个所述第一侧边3111与两个所述第二侧边3112垂直连接。所述空气腔 314在第一主表面A 1上的截面也呈长方形，两个所述第三侧边3141与两个所述第四侧边3142垂直连接。在本实施方式中，所述第一方向X 1为长度方向，所述第二方向X 2为宽度方向。
在其他实施方式中，所述空气腔314在第一主表面A 1上的截面也可以呈其他多边形或圆形等形状，此时，则所述空气腔314还包括其他侧边，两个所述第三侧边3141与两个所述第四侧边3142分别与至少一个其他侧边相连接。若所述空气腔314在第一主表面A 1上的截面为圆形，则所述第三侧边3141可以简化为第一方向X 1上的两个切点，所述第四侧边3142可以简化为第二方向X 2上的两个切点。
在所述第一方向X 1上，所述加热组件31a分为至少一冷区303、至少一过渡区302及至少一热区301。其中，所述过渡区302的一端与所述冷区303相接，另一端与所述热区301相接。其中，所述冷区303是指两个所述第二侧边3112、至少一个所述空气腔314的邻近所述电接触件317的所述第三侧边3141所在的延长线RR′及邻近所述电接触件317的所述第一侧边3111围成的区域。所述过渡区302是指两个第二侧边3112及至少一个所述空气腔314的相对设置的两个所述第三侧边3141所在的延长线RR′和QQ′围成的区域。所述热区301是指两个所述第二侧边3112及发热元件315相对两侧所述空气腔314的邻近所述发热元件315的所述第三侧边3141所在的延长线PP′和QQ′围成的区域或是指两个所述第二侧边3112、至少一个所述空气腔314的邻近所述发热元件315的所述第三侧边3141所在的延长线PP′及邻近所述发热元件315的所述第一侧边3111围成的区域。其中，所述电接触件317位于所述冷区303内，所述空气腔314位于所述过渡区302内，所述发热元件315位于所述热区301内。
在本实施方式中，所述加热组件31a分为两个所述冷区303、两个所述过渡区302及一个所述热区301。可以理解的，本实用新型中，热区301与冷区303之间设有过渡区302，热区301的热量向冷区303传递过程中，由于过渡区302的存在，热量在传递方向上被阻隔，温度急剧下降，使得冷区303的温度保持在较低的水平，可选的，冷区303的温度在100℃以下。在本实施方式中，所述热区301是指两个所述第二侧边3112及所述空气腔314的邻近所述发热元件315的所述第三侧边3141所在的延长线PP′和QQ′围成的区域。
请继续参阅图2，在所述第二方向X 2上，定义邻近第二侧边3112的空气腔314最靠近同侧的第二侧边3112的边到与之邻近的所述第二侧边3112的距离为W 1，每个空气腔314的两个所述第四侧边3142之间的距离为W 2，相邻两个所述空气腔314之间的距离为W 3，所述基板311的两个所述第二侧边3112之间的距离为W，则，W＝2W 1+mW 2+(m-1)W 3，可选的，mW 2/W＞40％，W 3/W 1＞150％，以保证所述空气腔314的具有足够的耐热通量。其中，m为所述空气腔314的数量，m为正整数且m≥1。在本实施方式中，m＝2。
定义每个所述空气腔314在第一主表面A 1上的截面积为A 1，所述基板311的第一主表面A 1总截面积为A 2，定义所述空气腔314的总截面积mA 1与所述基板311的总截面积A 2的比率为所述加热组件31a的质量指数E 空气腔，所述质量指数E 空气腔可以量化所述加热组件31a的热解耦效率。可选的，所述加热组件31a的厚度可选为0.1mm～5mm，则E 空气腔＝mA 1/A 2＞15％。也即是说，在所述加热组件31a的厚度为0.1mm～5mm时，所述空气腔314的质量指数E 空气腔必须大于15％，以保证所述空气腔314能够有效地阻隔所述热区301的热量传递到所述 冷区303内。
请继续参阅图2，在一个实施方式中，在所述第一方向X 1上，定义热区301相对两侧边缘之间的距离为L 1，每个所述空气腔314的两个所述第三侧边3141之间的距离为L 2，可选的，L 2/L 1＞60％。可选地，L 2为6mm。这种结构可以实现有效地热解耦。
所述发热元件315可以为嵌入式厚膜电阻加热器、发热涂层、发热线圈、发热片、发热网等结构。其中，制备所述发热元件315的材料可以是贵金属或普通金属或导电氧化物等。其中，所述贵金属可以是钌，铂，金，银，钯或它们的合金。所述普通金属可以是铜或镍等。所述导电氧化物可以为氧化钌等。在本实施方式中，制备所述发热元件315的材料是铂。具体地，所述发热元件315的热导率约为72Wm -1K -1。本实施方式中，所述发热元件315为两个嵌入式厚膜电阻加热器。具体地，所述发热元件315的厚度为0.01mm，宽度为0.6mm。
在所述第一方向X 1上，定义所述空气腔314的边缘到与之相邻的所述第一侧边3111的距离为L 5，则L 3要足够长，以便于安装所述电接触件317。所述电接触件317的面积必须足够大，以便于与气溶胶生成装置100中的雾化芯30中的标准电触点兼容。
其中，所述加热组件31a还包括多个释放孔316，所述释放孔316沿着第三方向X 3贯穿所述基板311且位于所述热区301内。所述释放孔316与所述导液件32相对设置，用于将被所述发热元件315雾化产生的烟雾释放到所述雾化腔14内。
请继续参阅图2，定义每个所述释放孔316的横截面积为A 3，则可选的，所述释放孔316的总横截面积nA 3与所述基板的横截面积A 2的比值满足：0.03％≤nA 3/A 2≤9.00％。其中，n为释放孔316的个数， n为正整数且＞0。其中，所述释放孔316的总横截面积与所述基板311的横截面积的比值为所述释放孔316的品质因素，可以用于表征所述释放孔316的有效性。需要说明的是，所述横截面积所对应的横截面与第一主表面A 1或第一主表面A 2平行。
定义每个所述释放孔316的半径为r 1，则可选的，0.01≤r 1/L 1≤0.1。如此设置有利于将所述发热元件315雾化产生的烟雾释放到所述雾化腔14内。
在一个实施方式中，在所述第一方向X 1上，定义邻近所述空气腔314的所述释放孔316r边缘到与之邻近的所述空气腔314的边缘的最短距离为L 3，则L 3/L 1＞10％；在一个实施方式中，在所述第二方向X 2上，定义邻近所述第一侧边311的所述释放孔316边缘到与之邻近的所述第二侧边3112的距离为L 4，则L 4/L 1＞10％。如此设置有利于将所述发热元件315雾化产生的烟雾释放到所述雾化腔14内。
请参阅图4，本实用新型第二实施方式中提供一种加热组件31b，所述加热组件31b的结构与加热组件31a的结构相似，其区别仅在于，所述空气腔314仅设置在所述发热元件315的一侧。所述电接触件317均设置在所述基板311的一端，并未分开设置在所述基板311的两端，以使得所述加热组件31b具有较大的加热区域。
在本实施方式中，请参阅图3、图4，所述加热组件31a的电阻值可以通过如下式子计算：
Figure PCTCN2020108189-appb-000001
Figure PCTCN2020108189-appb-000002
其中，
Figure PCTCN2020108189-appb-000003
其中，R thermal是绝对热阻，L bridge是空气腔314在第一方向X 1上的长度(即为图2中的L 2)，k n为材料或空气的热导率，T为加热组件31a的厚度，W i为每个部分的宽度，在本实施方式中，W i对应于上述W 1、W 2、W 3。因此，在本实施方式中，所述加热组件31a的总热阻R bridge由几个并联的电阻组成，包括两组空气腔314的电阻(R air1+R air2)、两组空气腔314之间的所述基板311的电阻R center、所述空气腔314与对应的两个所述第一侧边3111之间的基板311的电阻R side1及电阻R side2及导电线路318的电阻R Pt1和R Pt2。在本实施方式中，所述基板311的总宽度W为12.0mm，W 1、W 2、W 3分别为3mm、4mm及1mm，所述嵌入式厚膜电阻加热器的厚度为0.01mm，宽度为0.6mm，所述空气腔314的长度为6mmmm。所述基板311的厚度约为0.4mm，总宽度为12.0mm，热导率约为3Wm -1K -1。所述嵌入式厚膜电阻加热器的材料是铂，热导率约为72Wm -1K -1。所述空气腔314中的空气的热导率约为0.04Wm -1K -1。在本实施方式中，每个所述空气腔314的热阻为463KW -1。
请参阅图5，图5为图4所示的加热组件31b在550℃工作的IR特性图。从图中可以看出，在所述加热组件31b的所述发热元件315与所述电接触件317之间采用所述空气腔314实现过渡，可以使得所述冷区303的温度保持在100℃以下，而所述加热组件31b在热区保 持在550℃～560℃温度下工作。这说明所述加热组件31b具有较好的加热均匀性和较低水平的热传递，使得所述发热元件315所在的热区301和所述电接触件317所在的所述冷区303得以有效分隔。
请参阅图6，本实用新型第三实施方式中提供一种加热组件31c，所述加热组件31c的结构与所述加热组件31b的结构相似，其区别仅在于，两个所述空气腔314在所述第一方向X 1上排列设置。
本实用新型提供的加热组件包括发热元件、热量阻隔结构(空气腔)及电接触件，空气腔设置在电接触件与发热元件之间，因空气腔中充满空气，而空气的导热率较低，因此，所述空气腔可以限制热区的热量损失，并防止所述热区的热量向所述冷区快速传递而导致所述冷区的温度过高，从而不仅能够提高所述雾化芯及气溶胶生成装置的雾化效率，还能够降低所述加热组件、雾化芯及气溶胶生成装置对电接触件的耐热性能的要求。
本实用新型还提供了一种加热组件的制造方法，包括：
步骤一，铸造基板。
将陶瓷粉末和有机成分的混合物浇铸成厚度为0.2mm至2mm的带状的基板。
步骤二，加工基板形成所需结构。
将所述带状的基板切成所需的尺寸，以用作加热组件的基材；
采用激光切割或冲压工艺在基板上形成能量阻隔结构所述能量阻隔结构可选为空气腔，或者隔热件等。
可选的，本步骤还可以包括采用激光切割或冲压工艺在基板上形成释放孔和/或电气通孔。
步骤三，在基板上印刷发热元件以及电接触件。
本步骤包括采用丝网印刷工艺，将所需图案形式的发热元件(电阻加热材料)以及电接触件一起印刷在指定的基板上形成半成品。
所述电接触件包括电焊盘。进一步的，本步骤还包括在基板上印 刷连接发热元件以及电接触件的导电线路。
步骤四，将上述步骤三得到的半成品进行干燥。
步骤五，将步骤四干燥后得到的半成品堆叠在一起，其中发热元件嵌入基板内部，电接触件位于基板表面。
步骤六，在40℃–100℃的温度下将步骤五得到的半成品进行热压缩后，在高温(800℃–1600℃)下烧结，以去除有机物，并成为一块整体。
以上所述，仅是本实用新型的较佳实施方式而已，并非对本实用新型任何形式上的限制，虽然本实用新型已是较佳实施方式揭露如上，并非用以限定本实用新型，任何熟悉本专业的技术人员，在不脱离本实用新型技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施方式，但凡是未脱离本实用新型技术方案内容，依据本实用新型的技术实质对以上实施方式所做的任何简单修改、等同变化与修饰，均仍属于本实用新型技术方案的范围内。

Claims (12)

  1. 一种加热组件，所述加热组件用于气溶胶生成装置，包括
    一基板；
    至少一发热元件，所述发热元件形成在所述基板上；
    至少两个电接触件，所述电接触件形成在所述基板上,所述电接触件与所述发热元件电连接；
    至少一热量阻隔结构，所述热量阻隔结构形成在所述基板上且位于所述发热元件与所述电接触件之间。
  2. 如权利要求1所述的加热组件，其特征在于，所述发热元件设置在所述基板的中央，所述电接触件设置在所述基板的边缘。
  3. 如权利要求2所述的加热组件，其特征在于，所述热量阻隔结构位于所述发热元件的一侧，至少两个所述电接触件均位于所述基板的远离所述发热元件的一端。
  4. 如权利要求1所述的加热组件，其特征在于，所述热量阻隔结构为空气腔。
  5. 如权利要求4所述的加热组件，其特征在于，每个所述发热元件的两侧分别形成有一组所述空气腔，每组所述空气腔的远离所述发热元件一侧形成有一个所述电接触件。
  6. 如权利要求1所述的加热组件，其特征在于，所述加热组件形成有冷区、热区、过渡区，所述发热元件设置在所述热区，所述电接触件设置在所述冷区，所述热量阻隔结构设置在所述过渡区。
  7. 如权利要求4所述的加热组件，其特征在于，在所述基板包括相对设置的第一主表面和第二主表面，在平行于第一主表面或第二主表面的截面定义两个相互垂直的方向：第一方向与第二方向，所述基 板在所述第一方向上包括两个相对设置的第一侧边，在所述第二方向上包括两个相对设置的第二侧边，在所述第一方向上，每个所述空气腔包括两个相对设置的第三侧边，在所述第二方向上，每个所述空气腔包括两个相对设置的第四侧边，两个所述第三侧边平行于两个所述第一侧边，两个所述第四侧边平行于两个所述第二侧边。
  8. 如权利要求7所述的加热组件，其特征在于，在所述第二方向上，定义邻近第二侧边的所述空气腔最靠近同侧的第二侧边的边到与之邻近的所述第二侧边的距离为W 1，每个空气腔的两个所述第四侧边之间的距离为W 2，相邻两个所述空气腔之间的距离为W 3，所述基板的两个所述第二侧边之间的距离为W，则，W＝2W 1+mW 2+(m-1)W 3，mW 2/W＞40％，W 3/W 1＞150％，m为所述空气腔的数量，m为正整数且m≥1。
  9. 如权利要求6所述的加热组件，其特征在于，在所述第一方向X 1上，定义热区的相对两侧边缘之间的距离为L 1，每个所述空气腔的两个所述第三侧边之间的距离为L 2，则，L 2/L 1＞60％。
  10. 如权利要求6所述的加热组件，其特征在于，所述加热组件还包括多个释放孔，所述释放孔贯穿所述基板且位于所述热区内。
  11. 一种雾化芯，所述雾化芯包括一导液件，其特征在于，所述雾化芯还包括如权利要求1-10任一项所述的加热组件。
  12. 一种气溶胶生成装置，包括电池组件、气流通道以及如权利要求11所述的雾化芯；所述气流通道与所述雾化腔相连通，所述气流通道用于供从所述雾化腔流出的气溶胶流通至外界，以供人吸食；所述电池组件与所述发热元件电连接，所述电池组件用于给所述发热元件提供使气溶胶形成基质雾化所需的电能。
PCT/CN2020/108189 2020-06-05 2020-08-10 加热组件、雾化芯及气溶胶生成装置 WO2021243843A1 (zh)

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