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WO2022062354A1 - 发热组件及气溶胶形成装置 - Google Patents

发热组件及气溶胶形成装置 Download PDF

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Publication number
WO2022062354A1
WO2022062354A1 PCT/CN2021/084628 CN2021084628W WO2022062354A1 WO 2022062354 A1 WO2022062354 A1 WO 2022062354A1 CN 2021084628 W CN2021084628 W CN 2021084628W WO 2022062354 A1 WO2022062354 A1 WO 2022062354A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
electrode
heating element
insulating layer
connection end
Prior art date
Application number
PCT/CN2021/084628
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
张幸福
王守平
孙利佳
李亚飞
王郁
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 EP21870743.8A priority Critical patent/EP4218445A4/de
Priority to JP2022575485A priority patent/JP7456014B2/ja
Priority to KR1020227044380A priority patent/KR20230011411A/ko
Publication of WO2022062354A1 publication Critical patent/WO2022062354A1/zh

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • 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
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • the invention relates to the technical field of heat-not-burn smoking equipment, in particular to a heating component and an aerosol forming device.
  • heat-not-burn electronic cigarettes also known as heat-not-burn aerosol-forming devices .
  • tubular peripheral heating or central embedded heating
  • tubular peripheral heating means that the heating tube surrounds the aerosol-forming substrate (such as tobacco) to heat the aerosol-forming substrate.
  • center-embedded heating is to insert a heating element into the aerosol-forming substrate to heat the aerosol-forming substrate.
  • heating components are widely used because of their simple manufacture and convenient use. At present, heating components mainly use ceramic or insulating treated metal as the substrate, and then print or coat the resistance heating circuit on the substrate, and after high temperature treatment It is formed by fixing the resistance heating circuit on the base.
  • the resistance heating circuit on the existing heating element is a layer of film that is later printed or coated on the substrate, in the process of inserting the heating element into the aerosol-forming substrate for many times, the resistance heating circuit passes through the substrate due to the bending and deformation of the substrate.
  • the resistance heating circuit When heating at high temperature, it is easy to fall off the substrate, and the stability is poor, and during the heating process, because the resistance heating circuit only contacts the aerosol-forming substrate on the side of the substrate where the resistance heating circuit is arranged, and does not contact the aerosol-forming substrate on the back of the substrate. , resulting in poor heating uniformity of the aerosol-forming substrate.
  • the present application provides a heating component and an aerosol forming device.
  • the heating component can solve the problem that when the resistance heating circuit on the existing heating component is heated at a high temperature, it is easy to fall off the substrate, and the stability is poor. The problem of poor uniformity of heating of the aerosol-forming substrate by the heating circuit.
  • the heating element includes a heating element, a first electrode and a second electrode; wherein, the heating element is used to insert and heat the aerosol to form a matrix, and the heating element has a first connection end and a second connection end opposite to the first connection end; An electrode is located at the first connection end of the heating element and is electrically connected to the first connection end; one end of the second electrode is electrically connected to the second connection end, and the first electrode and the second electrode are insulated.
  • an aerosol forming device the aerosol forming device includes a housing, a heating component and a power supply component arranged in the housing;
  • the component connection is used to supply power to the heating component, and the heating component is the heating component mentioned above.
  • the heating element provided by the present application is provided with a heating element to heat the aerosol-forming substrate after the aerosol-forming substrate is inserted;
  • the circuit can be directly and independently inserted into the aerosol to form the matrix, and the problem of failure of the heating body from falling off the substrate during high temperature heating will not occur, which greatly improves the stability of the heating component; at the same time, by setting the first electrode and The second electrode is insulated from the first electrode, and the first electrode is arranged on the first connection end of the heating element and is electrically connected to the first connection end, and one end of the second electrode is electrically connected to the second connection end, so that the A current loop is formed between the first connection end and the second connection end of the heating element, which can not only avoid the short circuit problem, but also simplify the processing process and effectively improve the strength of the heating element.
  • FIG. 1a is a schematic structural diagram of a heating component provided by the first embodiment of the present application.
  • Fig. 1b is a schematic diagram of inserting a heating element into an aerosol-forming substrate according to an embodiment of the present application
  • FIG. 2 is a schematic disassembly diagram of the structure shown in FIG. 1 a provided by a specific embodiment of the application;
  • FIG. 3 is a schematic disassembly diagram of the structure shown in FIG. 1 a provided by another specific embodiment of the present application;
  • FIG. 4 is a cross-sectional view of a parallel arrangement of heating elements provided by an embodiment of the application.
  • FIG. 5 is a cross-sectional view of a parallel arrangement of heating elements provided by another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a heating assembly provided by a second embodiment of the present application.
  • FIG. 7 is a schematic disassembly diagram of the structure shown in FIG. 6 provided by a specific embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a heating assembly with a protective layer coating the entire surface of a heating rod according to an embodiment of the application;
  • FIG. 9 is a schematic structural diagram of an aerosol forming apparatus provided by an embodiment of the present application.
  • FIG. 10 is a front view of the mounting seat provided by an embodiment of the application after being assembled with the heating component.
  • first”, “second” and “third” in this application are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first”, “second”, “third” may expressly or implicitly include at least one of that feature.
  • "a plurality of” means at least two, such as two, three, etc., unless otherwise expressly and specifically defined. All directional indications (such as up, down, left, right, front, rear%) in the embodiments of the present application are only used to explain the relative positional relationship between components under a certain posture (as shown in the accompanying drawings).
  • FIG. 1a is a schematic structural diagram of a heating element provided by a first embodiment of the application
  • FIG. 1b is a schematic diagram of inserting the heating element provided by an embodiment of the application into an aerosol-forming matrix
  • FIG. 1a is a schematic structural diagram of a heating element provided by a first embodiment of the application
  • FIG. 1b is a schematic diagram of inserting the heating element provided by an embodiment of the application into an aerosol-forming matrix
  • a heating element 90 is provided, and the heating element 90 can be specifically used for inserting and heating the aerosol forming matrix 98, for example,
  • the heating element 90 can be used for inserting tobacco to heat the tobacco, and the following embodiments are taken as an example; it can be understood that in this embodiment, the aerosol-forming substrate 98 can be specifically Leaf or flower cuttings of tobacco or non-tobacco plants; the schematic diagram of inserting the heating element 90 into the aerosol-forming substrate 98 can be seen in FIG. 1 b.
  • the heating component 90 includes a heating body 91, a first electrode 92a and a second electrode 92b.
  • the heating element 91 is used to insert and heat the aerosol forming matrix 98; the heating element 91 can be directly and independently inserted into the aerosol forming matrix 98 compared with the existing resistance heating circuit formed by silk screen printing or coating on the substrate, And there is no problem that the heating body 91 falls off from the base and causes failure when heating at a high temperature, which greatly improves the stability of the heating assembly 90; specifically, the heating body 91 has a first connection end E and a first connection end The second connection end F opposite to E, when the heating element 91 is inserted into the tobacco, the second connection end F of the heating element 91 is inserted into the tobacco first.
  • the second connection of the heating element 91 can be specifically set as a pointed end, that is, in a triangular structure to form a pointed end portion D; and the included angle formed by two adjacent sides of the pointed end can be 45 degrees to 90 degrees, for example, 60 degrees.
  • the first connection end E and the second connection end F in this application respectively include a certain area occupied by the corresponding end, rather than refer to an end point or an end surface.
  • the first electrode 92a and the second electrode 92b are specifically arranged at (ie located at) the first connection end E of the heating body 91, and the first electrode 92a is electrically connected to the first connection end E of the heating body 91, and the second electrode 92b is insulated from the first connection end E of the heating body 91 to avoid short circuit; and the second electrode 92b extends from the first connection end E of the heating body 91 to the second connection end F and is electrically connected to the second connection end F , so that a current loop is formed between the first connection end E and the second connection end F of the heating element 91 .
  • the processing technology is simpler, but also the overall strength of the heating element 90 is effectively improved, and the adhesion to the tobacco and the atomized e-liquid during use is reduced at the same time.
  • the shape and size of the heating body 91 are not limited, and can be designed as required.
  • the heating element 91 is in the shape of a bar, such as a rectangle, and one end of the rectangle forms a tip.
  • the heating body 91 includes a first heating area A and a second heating area B connected to the first heating area A, wherein the first heating area A is the main mist inserted into the aerosol forming matrix 98 for heating
  • the atomization temperature is concentrated at 280°C to 350°C, accounting for more than 75% of the area of the atomization area.
  • the second heating area B is the main matching section of the heating element 91, and the temperature is below 150°C.
  • the ratio of the heating temperature of the first heating area A to the heating temperature of the second heating area B of the heating body 91 may be greater than 2; zone B to reduce the atomization temperature of the ceramic heating element 91 located in the second heating zone B; it is understandable that the first connection end E of the heating element 91 is located where the second heating zone B of the heating The two connecting ends F are located where the first heating area A of the heating element 91 is located.
  • the resistivity of the material of the part of the heating element 91 located in the second heating area B is smaller than the resistivity of the material of the part of the heating element 91 located in the first heating area A, so that the first heating element of the heating element 91 is heated.
  • the temperature of zone A is greater than the temperature of the second heating zone B; at the same time, by arranging materials with different resistivities in different heating zones, the temperature of different heating zones can be regulated by the difference in resistivity; specifically, the heating element 91 is located in the first heating zone.
  • the part of the area A and the part of the heating element 91 located in the second heating area B have basically the same main components and are integrally formed, but the part of the heating element 91 located in the first heating area A and the part of the heating element 91 located in the second heating area B.
  • the proportion of the ceramic material in the parts is different or other components are different, so that the part of the heating element 91 located in the first heating area A and the part of the heating element 91 located in the second heating area B have different resistivities.
  • metal films formed of different conductive materials are used for splicing in the two heating areas, such as the scheme of splicing two different conductive materials with an aluminum film and a gold film. The problem of breakage of the conductors of the first heating region A and the second heating region B of the heating element 91 is avoided.
  • the first heating area A and the second heating area B of the heating body 91 only most of the first heating area A is inserted into the aerosol forming matrix 98, and a small part of the first heating area A and the second heating area Zone B stays outside the aerosol-forming substrate 98; or the first heat-generating zone A is entirely inserted into the aerosol-forming substrate 98, while the second heat-generating zone B remains outside the aerosol-forming substrate 98; or the first heat-generating zone A is entirely
  • the aerosol-forming substrate 98 is inserted, and a small part of the second heat-generating area B is also inserted into the aerosol-forming substrate 98 , and only most of the second heat-generating area B remains outside the aerosol-forming substrate 98 .
  • the above-mentioned heating element 91 may be a self-supporting structure, that is, the heating element 91 can exist independently, without being attached to other carriers;
  • the formed resistance heating circuit can effectively avoid the problem of falling off from the base during high temperature heating, and greatly improve the stability of the heating element 90; and because the heating element 91 is a self-supporting structure, there is no need to cooperate with the substrate.
  • the two opposite surfaces can be in direct contact with the tobacco, which not only has high energy utilization, but also heats the tobacco more uniformly, and the preset temperature field boundary is clear.
  • the material of the heating body 91 can be specifically conductive ceramics. Compared with the existing metal materials, the heating body 91 made of the ceramic material has higher conductivity efficiency, and the temperature generated by heating is relatively uniform; and the heating body 91 made of this ceramic material The power can be adjusted and designed between 3 watts and 4 watts, the conductivity can reach 1* 10-4 ohms to 1* 10-6 ohms, the flexural strength is greater than 40MPa, and the fire resistance is higher than 1200 °C; The completed heating element 91 has the characteristic of starting voltage in the whole process.
  • the heating body 91 made of ceramic includes main components and crystal components; wherein, the main components can be one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon, and titanium, and the crystal
  • the composition can be one or more of lanthanum manganate, lanthanum strontium manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide, and yttrium oxide.
  • the heating element 91 may also be made of a metal alloy or a ceramic alloy made of an iron-silicon alloy or an iron-silicon aluminum alloy.
  • the electromagnetic heating wavelength of the material of the heating element 91 made of ceramics is the mid-infrared wavelength, which is conducive to atomizing the aerosol to form the e-liquid in the matrix and improving the taste; in addition, the crystal phase structure of the ceramic heating element 91 is a high temperature
  • the stable oxide ceramics have good fatigue resistance, high strength, and high density, which can effectively avoid the volatilization of harmful heavy metals and dust problems, and greatly improve the service life of the heating element 91 .
  • the above-mentioned use of the whole piece of ceramic heating element 91 can reduce the hot spot area of the highest temperature, eliminate the risk of fatigue cracking and fatigue resistance increase, and have better consistency;
  • the smoothness brought by the microcrystalline structure makes the surface of the heating element 91 easier to clean and not easy to adhere to; in addition, using the ceramic production process to make the heating element 91 made of ceramic material, the process is relatively simple and easy to control, and the cost is low, which is beneficial to The promotion of production and the improvement of economic benefits.
  • the above-mentioned conductive ceramic can be a material with TCR characteristics, that is, the temperature has a corresponding relationship with the resistance value, so the temperature value can be obtained by detecting the resistance value during use to control the temperature of the heating body 91.
  • the first electrode 92a and the second electrode 92b can be coated on the surface of the heating body 91 to improve the bonding force between the first electrode 92a and the second electrode 92b and the heating body 91, thereby improving the connection to the first electrode 92a and the second electrode 92b.
  • the above-mentioned coating material can be selected from silver paste.
  • the first electrode 92a and at least part of the second electrode 92b can also be formed by depositing a metal film, such as gold, platinum, copper and other metal materials with resistivity higher than 1* 10-6 ohm.
  • FIG. 3 is a schematic disassembly diagram of the structure shown in FIG. 1a provided by another specific embodiment of the present application;
  • the tip portion D connected to one end of the main body portion C; wherein, the second connecting end F of the heating element 91 is the tip portion D, and the first connecting end E of the heating element 92 is the end of the main body portion C away from the tip portion D; the second electrode One end of 92b away from the second connection end F is disposed at the first connection end E of the heating element 92 .
  • the main body portion C may be a rectangle
  • the tip portion D may be a triangle, an arc or an isosceles trapezoid.
  • the heating body 91 may be an elongated heating plate.
  • the first electrode 92a and the second electrode 92b are oppositely arranged on both sides of the heating plate;
  • the first connection end E of the heating plate is electrically connected, and the heating plate and the first surface M are provided with an insulating layer 93, and the insulating layer 93 extends from the first connection end E of the heating plate to a position close to the second connection end F, and the heating body 91
  • the first surface M of the second connection end F is exposed to the insulating layer 93;
  • the second electrode 92b is specifically arranged on the surface of the insulating layer 93 away from the heating plate, and extends toward the second connection end F of the heating body 91, and the second electrode 92b is The part of 92b extends beyond the insulating layer 93 to contact and electrically connect with the second connection end F of the heating plate.
  • first electrode 92a can also be coated on the first surface M, the second surface N and the side surface of the heating plate, that is, to form a ring shape.
  • the portion of the first electrode 92a coated on the first surface M of the heating plate is disposed between the insulating layer 93 and the heating plate.
  • the first electrode 92a may have a rectangular structure, and the insulating layer 93 may be T-shaped; specifically, the second electrode 92b includes a first coating portion 921, a second coating portion 922, and a third coating portion 923; wherein , the first coating part 921 is coated on the side surface of the insulating layer 93 away from the heating body 91 and is opposite to the first electrode 92a, and the shape of the first coating part 921 is the same as that of the first electrode 92a, and the second The coating portion 922 is connected to the first coating portion 921, and is coated on the surface of the insulating layer 93 away from the heating body 91 and has the same shape as the extension of the insulating layer 93.
  • the third coating portion 923 is the same as the second coating portion.
  • the part 922 is connected, directly coated on the first surface M of the heating body 91 and electrically connected with the second connection end F of the heating body 91, and the third coating part 923 is perpendicular to the second coating part 922, which can be specifically The elongated rectangular structure; specifically, the first coating part 921 , the second coating part 922 and the third coating part 923 are formed into an I-shaped structure.
  • the insulating layer 93 and the second electrode 92b are not limited to the above-mentioned shapes, and can be designed as required; smaller than the size of the insulating layer 93 at the corresponding position. That is, in the present application, both the first electrode 92a and the second electrode 92b are provided on the heating plate by coating. In other embodiments, it can also be provided on the heating plate by means of coating such as sputtering or screen printing.
  • At least one surface of the heating body 91 is also coated with a protective layer 94, and the protective layer 94 covers at least the first electrode 92a and the second electrode 92b, so as to prevent the smoke oil formed when heating tobacco from damaging the first electrode 92a.
  • the body 91 has a smooth surface.
  • the protective layer 94 may be a glass glaze layer.
  • FIG. 3 is a schematic disassembly diagram of the structure shown in FIG. 1a provided by another specific embodiment of the present application; what is different from the above-mentioned first specific embodiment is that the first electrode 92a and the The second electrode 92b is provided on the same side of the heat generating body 91 .
  • the first electrode 92a is coated on the first surface M of the heating body 91 and is electrically connected to the first connection end E of the heating plate;
  • the layer 93 covers the first electrode 92a and extends from the first connection end E of the heating plate to a position close to the second connection end F.
  • the second electrode 92b is specifically arranged on the surface of the insulating layer 93 away from the first electrode 92a and faces the heating body.
  • the second connection end F of the heating plate 91 extends, and a portion of the second electrode 92b extends out of the insulating layer 93 to contact and electrically connect with the second connection end F of the heating plate.
  • the first electrode 92a can have a rectangular structure, and the insulating layer 93 can have a T-shaped structure.
  • the size may be the same as that of the first electrode 92a. It can be understood that the shape and size of the part of the insulating layer 93 covering the first electrode 92a is not limited, as long as the first electrode 92a and the second electrode 92b can be insulated, for example, the insulating layer 93 covers the entire first electrode 92a, or The insulating layer 93 covers part of the first electrode 92a but the size of the insulating layer 93 is larger than that of the second electrode 92b.
  • a first electrode 92 a can also be provided on the second surface N of the heating body 91 opposite to the first electrode 92 a , and a second electrode 92 a can be provided on the opposite position of the second electrode 92 b through the insulating layer 93 .
  • the number of electrodes 92b that is, the first electrodes 92a and the second electrodes 92b, are both two, so that the conductive components of the conductive ceramic are close to both surfaces of the conductive ceramic and can have a short current path, so that the two surfaces of the heating element 91 can have a shorter current path.
  • the temperature field is more uniform.
  • a heating element 91 is provided to heat the aerosol-forming substrate 98 through the heating element 91 after the aerosol-forming substrate 98 is inserted;
  • the resistance heating circuit on the base can be directly and independently inserted into the aerosol to form the matrix 98, and there is no problem that the heating body 91 falls off the base and causes failure during high temperature heating, which greatly improves the stability of the heating element 90;
  • the second electrode 92b is insulated and arranged, and the first electrode 92a is arranged on the first connection end E of the heating element 91 and is electrically connected to the first connection end E, and one end of the second electrode 92b is electrically connected to the second connection end F. , so that a current loop is formed between the first connection end E and the second connection end F of the heating element 91 ,
  • FIG. 4 is a cross-sectional view of a parallel arrangement of heating elements provided by an embodiment of the application
  • FIG. 5 is a parallel arrangement of heating elements provided by another embodiment of the application.
  • Cross-sectional view; the heating assembly 90 includes at least two heating bodies 91, and the at least two heating bodies 90 are arranged in parallel.
  • there may be two heating bodies 91 and the two heating bodies 91 are arranged opposite to each other, and an insulating layer 93 is arranged between them.
  • a first electrode 92a is provided on the opposite side surfaces of the two heating bodies 91, and the first electrode 92a is arranged at the first connection end E of the two heating bodies 91;
  • the second electrode 92b is disposed on the insulating layer 93 and extends from the first connection end E of the heating body 91 to a position close to the second connection end F, and is respectively connected to the second connection of the two heating bodies 91
  • the terminals F are electrically connected, so that the two heating elements 91 form a current loop between the first electrode 92a and the second electrode 92b and are arranged in parallel.
  • the first electrode 92 a is disposed on the insulating layer 93 at a position corresponding to the first connection end E of the heating element 91 , and is electrically connected to the first connection end E of the two heating elements 91 .
  • the second connection ends F of the two heating bodies 91 are respectively connected to their corresponding second electrodes 92b, so that the two heating bodies 91 are connected in parallel with the respective corresponding second electrodes 92b through the first electrodes 92a
  • the opposite side surfaces of the two heating bodies 91 are coated with an insulating layer 93, and the second electrode 92b on each heating body 91 is arranged on the insulating layer 93 away from the heating body 91 on the side surface of the body 91, And it extends from the first connection end E of the heating body 91 to a position close to the second connection end F, so as to be connected with the second connection end F of the heating body 91 .
  • FIG. 6 is a schematic structural diagram of a heating assembly provided by the second embodiment of the present application; different from the above-mentioned first embodiment, the heating body 91 can be a columnar shape and includes a main body portion C. and the tip portion D connected to one end of the main body portion C, the second connecting end F of the heating element 91 is the tip portion D, and the first connecting end E of the heating element 91 is the end of the main body portion C away from the tip portion D;
  • the main body C can be cylindrical, and the tip D can be conical or truncated; specifically, the heating body 91 can be a heating rod as shown in FIG. 6, and the second connecting end F of the heating rod is a tip, to facilitate insertion into the aerosol-forming matrix 98.
  • FIG. 7 is a schematic disassembly diagram of the structure shown in FIG. 6 provided by a specific embodiment of the application; the first electrode 92a is arranged on at least part of the surface of the first connection end E of the heating rod; An insulating layer 93 is provided on the outer side wall of the main body portion C. The insulating layer 93 extends from the first connection end E of the heating rod to a position close to the second connection end F, and exposes the position of the main body portion C near the tip portion D to the insulating layer.
  • the second electrode 92b is arranged on the surface of the insulating layer 93 away from the heating rod, and the part of the second electrode 92b extends to the outside of the insulating layer 93 and is arranged in contact with the second connection end F of the heating rod, that is, the second electrode 92b
  • the portion of the heater 91 extends out of the insulating layer 93 and is arranged in contact with the second connecting end F at the position of the main body portion C of the heating element 91 close to the tip portion D and exposed to the insulating layer 93 .
  • the first electrode 92a is arranged around the outer side wall of the heating rod, which may be an arc-shaped structure; in this embodiment, the insulating layer 93 is wound around the circumferential direction of the heating rod. , and the insulating layer 93 and the corresponding position of the first electrode 92a on the heating rod have a gap, so that the first electrode 92a is at least partially exposed through the gap, so as to facilitate the connection of the electrode lead 95;
  • the part of the second electrode 92b extending to the outside of the insulating layer 93 can be arranged around the main body C of the heating rod, which can be in a ring structure to keep the second electrode 92b effectively connected to the second connecting end F of the heating rod.
  • the first electrode 92a may further include a bottom surface extending to the heating rod close to the first connection end E, so as to increase the overall bonding force and electrical reliability.
  • the first electrode 92a can also be arranged around the outer sidewall of the heating rod and has a ring structure, and the insulating layer 93 can completely cover the first electrode 92a and be arranged around the outer sidewall of the heating rod.
  • the embodiment is not limited to this, as long as the first electrode 92 a and the second electrode 92 b can be prevented from being short-circuited by the insulating layer 93 .
  • At least one surface of the heating rod is also coated with a protective layer 94, and the protective layer 94 covers at least the first electrode 92a and the second electrode 92b, so as to prevent the smoke oil formed when heating tobacco from damaging the first electrode 92b.
  • Electrode 92a, second electrode 92b ; of course, in other embodiments, see FIG. 8 , which is a schematic structural diagram of a heating assembly with a protective layer coating the entire surface of the heating rod according to an embodiment of the application.
  • the protective layer 94 can also cover the entire surface of the heating rod, so that the entire heating rod has a smooth surface while protecting the first electrode 92a, the second electrode 92b and the heating rod.
  • the protective layer 94 may be a glass glaze layer.
  • the resistance of the heating rod may be 0.3 to 1 ohm, such as 0.6 ohm, and the resistivity may be 1*10 -4 ohm to 4*10 -4 ohm, specifically 2*10 -4 Ohm, the power used can be 2 watts to 5 watts, specifically 3.5W.
  • the total length L41 of the heating rod may be 18 mm to 20 mm
  • the length L42 used for inserting into the tobacco may be 14 mm to 15 mm
  • the diameter ⁇ of the heating rod may be 2.0 mm to 15 mm. 3.0mm, like 3mm.
  • the silver electrode is first coated on the heating rod to form the electrode, and then the insulating medium layer is coated on other positions on the surface of the heating rod, and then the electrode lead 95 is welded to prevent the electrode lead 95 from contacting Hot rod.
  • the heating body 91 in the shape of a column, it is not only convenient for the heating body 91 to be inserted into the tobacco, but also the columnar heating body 91 is easy to process, which effectively reduces the difficulty of processing.
  • the heating element 90 provided in the embodiment of the present application can directly adopt a self-supporting heating plate (or heating rod) made of conductive ceramic material, and the heating element 91 can be arranged in a single or The heating element 91 is made of ceramic material. Compared with the existing resistance heating circuit formed by coating the metal heating material on the substrate, it can simultaneously contact the tobacco on both sides and heat the tobacco. more uniform and stable.
  • FIG. 9 is a schematic structural diagram of an aerosol forming device provided by an embodiment of the application; in this embodiment, an aerosol forming device 900 is provided, and the aerosol forming device 900 includes a casing 901 and a set of Heat generating assembly 90 , mounting base 96 and power supply assembly 97 within housing 901 .
  • the heating component 90 can be specifically the heating component 90 provided by any of the above embodiments, and its specific structure and function can be found in the above-mentioned descriptions in the relevant texts, which will not be repeated here; and is fixedly installed on the inner wall surface of the housing 901 through the mounting seat 96; the power supply component 97 is connected to the heating component 90 for supplying power to the heating component 90; and in one embodiment, the power supply component 97 can be specifically a rechargeable lithium ion battery.
  • the specific structure of the heating element 90 mounted on the mounting seat 96 can be referred to the above-mentioned FIGS. 1a and 8 ; specifically, referring to FIG. 8 , the mounting seat 96 includes a mounting body 961 and a mounting hole 962, and the heating element 90 is specifically inserted into the mounting seat 96 in the mounting hole 962 to be fixed with the mounting seat 96; specifically, the second heating region B of the heating component 90 is inserted into the mounting hole 962 of the mounting seat 96 to be fixed with the mounting seat 96; Then, the bottom end of the aerosol-forming substrate 98 abuts the upper surface of the mounting seat 96 .
  • an escape groove is provided on the side wall of the installation hole 962 , and the electrode lead 95 extends into the mounting seat 96 through the escape groove to connect with the electrode on the heating body 91 .
  • the mounting body 961 is further provided with at least two clamping portions 963 , and the mounting seat 96 is specifically fixed to the housing 901 of the aerosol forming device 900 through the clamping portions 963 .
  • FIG. 10 is a front view of the mounting seat provided by an embodiment of the application after the heating component is assembled; the heating body 91 is engaged in the mounting hole 962 of the mounting seat 96; in a specific embodiment, A part of the surface of the heating element 91 for inserting the mounting seat 96 has a first clamping structure 964, and a position corresponding to the first clamping structure 964 in the mounting hole 962 of the mounting seat 96 has a second clamping structure 965.
  • the heating body 91 is fixed by the first clamping structure 964 and the second clamping structure 965, thereby improving the stability of the connection between the two.
  • the first clamping structure 964 may specifically be a plurality of protrusions (or depressions), and the second clamping structure 965 may be a depression (or protrusion) matched with the first clamping structure 964 .
  • one side of the installation body 961 may also be provided with an extension groove 966 communicating with the installation hole 962, and the extension groove 966 may be specifically provided on the side surface of the second connection end F away from the heating body 91,
  • the shape of the extension groove 966 is the same as that of the part of the heating element 90 for inserting into the mounting seat 96 , so that the part of the heating element 90 inserted into the mounting seat 96 can be reinforced through the extension groove 966 to prevent it from breaking.
  • the mounting base 96 is provided with two extending grooves 966 , and the two extending grooves 966 are intersected vertically.
  • the material of the mounting seat 96 can be an organic or inorganic material with a melting point higher than 160 degrees, for example, it can be PEEK material; High temperature resistant glue.
  • a heating element 90 is provided, and the heating element 90 is arranged to include a heating body 91, so that after inserting the aerosol forming matrix 98, the aerosol forming matrix 98 is heated by the heating body 91;
  • the heating element 91 can be directly and independently inserted into the aerosol-forming matrix 98 compared with the existing resistance heating circuit that is silk-screened or coated on the substrate, and the heating element 98 will not fall off from the substrate during high temperature heating, resulting in failure.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
PCT/CN2021/084628 2020-09-23 2021-03-31 发热组件及气溶胶形成装置 WO2022062354A1 (zh)

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EP21870743.8A EP4218445A4 (de) 2020-09-23 2021-03-31 Heizanordnung und aerosolbildende vorrichtung
JP2022575485A JP7456014B2 (ja) 2020-09-23 2021-03-31 発熱部品及びエアロゾル形成装置
KR1020227044380A KR20230011411A (ko) 2020-09-23 2021-03-31 발열 어셈블리 및 에어로졸 형성 장치

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CN115119979A (zh) * 2022-07-06 2022-09-30 海南摩尔兄弟科技有限公司 气溶胶产生装置及其发热组件

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EP4218445A1 (de) 2023-08-02
EP4218445A4 (de) 2024-03-27

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