Electromagnetic atomization smoke cartridge capable of conducting circumferential heating from interior of smoke cartridge

Abstract

The utility model provides an electromagnetic atomization smoke cartridge which performs circumferential heating from the inside of the smoke cartridge, so that an efficient electromagnetic heating mode can be realized, and direct circumferential heating application can also be realized. The electromagnetic atomization smoke cartridge comprises a filter tip section, a cooling section and a substrate section which are sequentially and coaxially connected in the longitudinal direction, and a heating foil containing a heating receptor is arranged around the periphery of the substrate section. The filter tip section, the cooling section and the matrix section are sleeved with the smoke tube, so that a columnar smoke cartridge is formed. A traditional mode that a thick sheet type heating receptor is inserted into an axial center area in the smoke cartridge is omitted, a heating foil is adopted as the heating receptor to wrap an aerosol substrate to form a smoke generating body, and the electromagnetic atomization smoke cartridge which conducts circumferential heating from the interior of the smoke cartridge is formed. And large-area physical contact and direct thermal contact between the heating receptor and the aerosol substrate are ensured.

Description

Technical Field

[0001] This utility model relates to the field of electronic cigarette atomization, specifically to an electromagnetic atomizing cartridge that is circumferentially heated from inside the cartridge. Background Technology

[0002] According to the World Health Organization (WHO) definition on its official website, heated tobacco products (HNB) typically use a battery-powered heating system to heat specially formulated tobacco components to approximately 350°C for carbonization, far lower than the combustion temperature of traditional cigarettes (600-700°C), making it a new type of tobacco product. In aerosol-generating products, inhalable aerosols are typically generated by transferring heat from a heating element to an aerosol matrix. During heating, volatile compounds are released from the aerosol matrix and entrained in the air. HNB products are based on this theory. Since high temperatures and combustion release toxic and harmful substances, by using special processes and material innovations to heat the tobacco at a relatively low temperature of around 350°C, without high-temperature combustion, the problem of tobacco releasing toxic and harmful substances is solved. As the released volatile compounds cool, they condense to form an aerosol, which can be inhaled by the user. The aerosol can contain flavorings, flavorings, nicotine, and other desired ingredients.

[0003] The mainstream applications of existing heated tobacco cartridges include resistance center heating and electromagnetic center heating, with insert-type electromagnetic center heating being the most prevalent. Insert-type electromagnetic center heating typically involves embedding a thick-film heating sensor within the aerosol matrix of the electromagnetic atomizing cartridge. This cartridge structure has several limitations, such as: First, the co-winding process of the heating sensor strip and the aerosol matrix is ​​highly complex; second, the thickness of commercially available heating sensor strips is usually between 60 and 100 micrometers, and this thick-film configuration makes high-speed online cutting of the columnar smoke-generating body difficult, and the cutting tools are prone to wear; third, the contact area between the heating sensor and the aerosol matrix is ​​limited, resulting in some incomplete carbonization after inhalation; finally, because the annular aluminum foil has a certain shielding effect on the high-frequency magnetic field emitted by the device, it is not advisable to use aluminum foil for moisture and leakage prevention on the outer layer of such cartridges, otherwise it will affect the accuracy and stability of electromagnetic induction coupling.

[0004] Another existing type is the non-insertion barrel-shaped baking and heating mode, which mainly adopts a resistance circumferential heating mode. This involves using a circumferential heating device to heat the cartridge. The device has a ring-shaped circumferential heating element on the inner wall of the cartridge chamber, physically baking the built-in cartridge at a low temperature to form an aerosol. In this mode of circumferential heating from the outside of the cartridge, heat must first penetrate the cigarette paper to reach the aerosol matrix, which is an indirect heat contact method. Therefore, it suffers from drawbacks such as slow smoke output and a papery or glue-like taste in the aerosol. Moreover, this type of resistance circumferential heating device is not suitable for widespread commercial application in electromagnetic atomizing cartridges because it faces many challenges in temperature measurement and control mechanisms, power consumption stability, and heat loss, thus failing to form a relatively stable and uniform electromagnetic heating system for aerosol generation.

[0005] In view of this, this application proposes an electromagnetic atomizing cartridge that is circumferentially heated from inside the cartridge, which can achieve both efficient electromagnetic heating and the convenience of direct circumferential heating. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides an electromagnetic atomizing cartridge, comprising a filter section, a cooling section, and a matrix section coaxially connected in the longitudinal direction, wherein an arc-shaped heating foil containing ferromagnetic or subferromagnetic material is wound around the outside of the matrix section; and further comprising a hollow cigarette tube, which is sleeved on the outside of the filter section, the cooling section, and the matrix section to form a columnar cartridge.

[0007] Preferably, the heating foil is a strongly magnetic metal foil, or a composite foil made of a strongly magnetic metal foil and a backing paper.

[0008] Preferably, the backing paper is tissue paper, and the strongly magnetic metal foil is physically bonded to the tissue paper with an adhesive.

[0009] Preferably, the thickness of the strongly magnetic metal foil is 0.003-0.03 mm.

[0010] Preferably, the backing paper is graphite paper with a thickness of 0.02-0.1 mm.

[0011] Preferably, the strongly magnetic metal foil is a single alloy or single-element metal material, configured as a single-layer structure.

[0012] Preferably, the strongly magnetic metal foil is a composite metal material containing two or more metals, configured as a multilayer structure.

[0013] Preferably, the heating foil is wound around the periphery of the substrate segment to form an assembly unit.

[0014] Preferably, the heating foil is configured as a multi-segment arc shape, with a composite equivalent center angle ranging from 120° to 360°.

[0015] Preferably, the heating foil is a sheet cut from a long strip and then wound into a ring.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the traditional method of inserting a thick sheet-like heating sensor in the axial central area of ​​the cartridge is eliminated, and a ring-shaped magnetic foil is used as the heating sensor to wrap the aerosol matrix to form a smoke-generating body, which constitutes an electromagnetic atomizing cartridge that is circumferentially heated from the inside of the cartridge, ensuring a large area of ​​physical contact and direct thermal contact between the heating sensor and the aerosol matrix. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the longitudinal cross-section of an electromagnetic atomizing cigarette cartridge.

[0018] Figure 2 This is a schematic diagram of the winding of an electromagnetic atomizing cigarette cartridge.

[0019] Figure 3 This is a schematic diagram of the transverse cross-section of the electromagnetic atomizing cigarette cartridge in Example 1.

[0020] Figure 4 This is a schematic diagram of the transverse cross-section of the electromagnetic atomizing cigarette cartridge in Example 2.

[0021] Figure 5 This is a magnetic flux distribution diagram from the simulation of the magnetic field of the solenoid coil in Example 4.

[0022] Figure 6 This is a magnetic flux distribution diagram from the magnetic field simulation of the annular foil heating sensor in the solenoid in Example 4.

[0023] Figure 7 This is a schematic diagram of the transverse cross-section of the first type of electromagnetic atomizing cigarette cartridge in Example 5.

[0024] Figure 8 This is a schematic diagram of the transverse cross-section of the second type of electromagnetic atomizing cigarette cartridge in Example 5. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Reference Figure 1The electromagnetic atomizing cartridge includes a filter section 3, a cooling section 2, and a matrix section 1 connected coaxially along the longitudinal direction. An annular foil 102 surrounds the smoke-forming matrix 101 of the matrix section 1. It also includes a hollow smoke tube 4, which is positioned outside the filter section 3, cooling section 2, and matrix section 1 to form a columnar cartridge. The annular foil 102 acts as a heating sensor, circumferentially enveloping the smoke-forming matrix 101 and directly heating it circumferentially (i.e., from the side of the columnar body) during operation. The smoke-forming matrix 101 includes various continuous forms, not limited to geometric shapes and arrangements, including multi-strand sheet-like, multi-strand rope-like, multi-bundle fiber-like, multi-stalk filament-like, single-sponge-like, single-porous block-like, and single-tube coiled forms. It can also be classified according to the form of ordered tobacco shreds, disordered tobacco shreds, herbal paste, or herbal powder, all of which are included in the smoke-forming matrix 101 described in this patent.

[0028] In this embodiment, the aforementioned cooling section 2 can be a separate section or it can be configured as an extension section of the matrix section 1 or the filter section 3 to form a similar cooling function. The two are slightly different in form.

[0029] In this embodiment, the heating foil can be configured as an annular foil 102 as shown in the figure. Alternatively, multiple arc-shaped segments concentric with the tobacco motif can be uniformly or non-uniformly distributed around the periphery of the matrix segment 1. The central angle of the composite equivalent circular arc, viewed from the cross-section of the matrix segment 1, ranges from 180° to 360°. That is, multiple heating foil segments with arc-shaped peripheral curves should all be considered within the scope of protection of this application. The central angle should be no less than 120°, and especially no less than 180°; an angle that is too small will result in poor heating effect. The central angle should not exceed 360°; even if the arc-shaped heating foil segments overlap and the annular foil 102 overlaps, their equivalent central angle will not exceed 360°.

[0030] Reference Figure 2 The hollow smoke tube 4 is formed by wrapping paper, including thin-walled smoke tubes wrapped with low-grammage paper and thick-walled smoke tubes wrapped with high-grammage paper. The aforementioned low-grammage and high-grammage are relative concepts, representing a certain numerical range, and are adjusted according to experimental results in engineering practice.

[0031] This invention utilizes low-grammage paper to wrap a cylindrical tobacco cartridge, integrating it into a circumferentially electromagnetically heated tobacco cartridge. In this invention, low-grammage paper is defined as paper with a grammage of 20-60 g / m³. 2 The thin paper between the tubes is suitable for parallel rolling and bonding processes, and is closed and overlapped on the outside of the columnar tobacco cartridge to form a thin-walled tobacco tube.

[0032] The process involves using high-grammage paper to wrap and form a thick-walled smoke tube, which is then integrated into a circumferentially electromagnetically heated smoke cartridge. In this invention, high-grammage paper is defined as paper with a grammage of 120-180 g / m³. 2The thick paper between the tubes is suitable for oblique winding and bonding processes, and is closed and overlapped on the outside of the columnar tobacco cartridge to form a thick-walled tobacco tube.

[0033] Reference Figure 3 An annular foil 102 surrounds the smoke-forming matrix 101, and the smoke tube 4 is sleeved around the annular foil 102. The annular foil 102 is a strongly magnetic metal foil. "Metal foil" is a technical term referring to a specially made thin-film material that functions as a heating sensor in this invention, primarily responsible for generating heat. "Magnetic foil" is a technical term referring to a specially made strongly magnetic thin-film material. The annular foil 102 is formed by winding and bonding the strongly magnetic metal foil to form a ring (the overlap at the winding end is not shown in the figure), constituting the sidewall of the columnar smoke-forming matrix 101. The inner surface of the annular foil 102 is in close contact with the smoke-forming matrix 101, and its outer surface abuts against the smoke tube 4.

[0034] In one embodiment, the strongly magnetic metal foil adopts a single-layer structure of a single alloy or single metal to form a single heating sensor, whose Curie temperature is typically between 300-600°C, which is just right for low-temperature heating of aerosol products to achieve effective heating and produce rich aerosols.

[0035] For example, a special Fe-Ni-Zr based alloy, with iron, nickel, and zirconium as the main raw materials, is prepared into a foil material with a thickness of 0.03 mm. This foil is then cut to a suitable size and used as a coating material for a columnar smoke-forming matrix, ultimately serving as a single heating sensor with a Curie temperature in the range of 300-600℃. The weight percentage distribution of this Fe-Ni-Zr based alloy is: iron 2.00-35.00%, nickel 60.00-90.00%, and zirconium 0.40-10.00%. The single alloy heating sensor formed based on this alloy has a low initial magnetic permeability at room temperature (20℃), not exceeding 20,000 Gauss / Oersted, preferably in the range of 2,000-10,000 Gauss / Oersted. Such material properties prevent drastic changes in thermal and magnetic physical quantities during temperature variations, which would be detrimental to setting anti-counterfeiting identification and control windows. Its initial permeability exhibits a peak characteristic with increasing temperature, meaning it initially increases and then decreases. After reaching a stable operating temperature, the magnetic field continues to provide heating, ensuring stable operation. The peak characteristic can be a single-peak or double-peak curve. The stable operating temperature of the heating sensor is located to the right of the peak value and is close to the nearest peak value.

[0036] For example, 1J50 soft magnetic alloy material can be prepared into a foil with a thickness of 0.025mm and cut into appropriate sizes as a coating raw material for columnar smoke matrix. Ultimately, it can be used as a single heating sensor with a Curie temperature of approximately 450℃.

[0037] For example, pure nickel (Ni) elemental metal material is prepared into foil material with a thickness of 0.02 mm and cut into appropriate sizes as coating raw material for columnar smoke matrix, and finally used as a single heating sensor with a Curie temperature of about 354℃.

[0038] In one implementation, the strongly magnetic metal foil employs a multi-layered structure composed of multiple alloys.

[0039] For example, a composite heat sensor can be formed by a first heat sensor composed of a first material (aluminum, iron, or an iron alloy) and a second heat sensor composed of a second material (nickel or a nickel alloy). These two components are in close physical contact (achieved through electroplating, deposition, or welding) to form an integral heat sensor assembly, i.e., a composite heat sensor, which serves as the coating material for a columnar smoke matrix. The first heat sensor has a first Curie temperature, and the second heat sensor has a second Curie temperature. Due to the close physical contact, the first and second heat sensor materials have the same temperature when heated. The first heat sensor material, which can be optimized for heating the smoke matrix, can have a first Curie temperature higher than any predetermined maximum heating temperature. Once the composite heat sensor has reached the second Curie temperature, the magnetic properties of the second heat sensor material change significantly. At the second Curie temperature, the second heat sensor material reversibly transforms from a ferromagnetic phase to a paramagnetic phase. This phase transition of the second heat sensor material can be detected during the induction heating of the smoke matrix without physical contact with the second heat sensor material. Detection of the phase transition allows for controlled heating of the smoke matrix. For example, induction heating can be automatically stopped when a phase transition associated with the second Curie temperature is detected. Therefore, overheating of the smoke-forming matrix can be avoided, even if the first heating sensor material, which is primarily responsible for heating the smoke-forming matrix, does not have a Curie temperature higher than the maximum desired heating temperature or the first Curie temperature. After induction heating has stopped, the heating sensor cools until it reaches a temperature below the second Curie temperature. At this point, the second heating sensor material regains its ferromagnetic properties. This phase transition can be detected without contact with the second heating sensor material, and induction heating can then be restarted. Therefore, the induction heating of the smoke-forming matrix can be controlled by repeatedly starting and stopping the induction heating device, and this temperature control method is achieved through non-contact means.

[0040] For example, by combining pure nickel (Ni) with an iron-chromium-aluminum Kanthal alloy, a foil material with a thickness of 0.02 mm is prepared and cut into appropriate sizes, which is then used as a coating material for a columnar smoke-generating matrix, i.e., a composite heating sensor. The Curie temperature of nickel is 354℃, while that of the iron-chromium-aluminum Kanthal alloy is 1,000℃.

[0041] This invention requires a highly magnetic metal foil with extremely low thickness and good flexibility to facilitate stable maintenance after cutting and forming. From a processing perspective, the thinner and softer the highly magnetic metal foil, the easier it is to deform, wind, and cut. After forming, it also has a closer contact with the smoke matrix 101 and occupies less space. Through rigorous control, the preferred thickness is set within the range of 0.003-0.03 mm. High-temperature annealing is used to adjust it to a soft state, with a Vickers hardness of HV0.2 below 180, effectively ensuring the smooth progress of the winding and bonding process while minimizing the step effect at the overlap.

[0042] Example 2

[0043] Reference Figure 4 The difference between this embodiment and Embodiment 1 is that the substrate of the annular foil 102 adopts a composite structure. Specifically, it is a metal composite paper formed by pressing a strongly magnetic metal foil 1021 and a backing paper 1022 together. The backing paper 1022 is selected as a thin backing paper with a thickness ranging from 0.01 to 0.06 mm to minimize volume occupation. For example, 17-gram tissue paper has a thickness of approximately 0.02 mm. During the rolling and forming of the cigarette cartridge, the strongly magnetic metal foil 1021 is in contact with the aerosol matrix 101, and the backing paper 1022 is in contact with the cigarette tube 4. Since the backing paper 1022 has certain heat insulation properties, it can reduce the thermal impact on the cigarette tube 4 during heating, such as the generation of a burnt smell.

[0044] Furthermore, a certain amount of nicotine or nicotine salts can be added to the liner paper 1022 to further prevent a burnt or sour smell from being produced due to overheating of the paper material of the pipe 4. The easiest way to add nicotine or nicotine salts is to add tobacco plant fiber components during the manufacturing process of the liner paper 1022.

[0045] In a preferred embodiment, in addition to directly pressing the strong magnetic metal foil 1021 and the backing paper 1022 together physically, an adhesive can be added between the two to enhance the adhesion.

[0046] Furthermore, the backing paper 1022 can be made of two or more layers to achieve different purposes. For example, a first backing paper with a mild fragrance (such as mint) can be laminated to release a preset mint fragrance when heated. In addition, this method can also be used to assist in temperature indication, temperature control, heat insulation, or odor reduction.

[0047] Example 3

[0048] This embodiment discloses a method for manufacturing electromagnetic atomizing cigarette cartridges that implements Embodiments 1 and 2, including:

[0049] S1: Roll up the aerosol matrix substrate to form a columnar smoke-generating matrix, or mold the aerosol matrix substrate to form a columnar smoke-generating matrix;

[0050] S2: Prepare annular foil and wrap the annular foil onto the columnar smoke-forming matrix to form a matrix segment or assembly unit;

[0051] S3: The cigarette tube is fitted onto the outside of the filter section, cooling section, and matrix section, which are connected coaxially in the longitudinal direction in sequence, to form a columnar cigarette cartridge.

[0052] The columnar smoke-forming matrix formed by winding the aerosol matrix substrate further includes the substrate to be wound being ordered tobacco shreds or disordered tobacco shreds.

[0053] The molding of the aerosol matrix substrate to form a columnar smoke matrix further includes the substrate to be molded being herbal powder or herbal paste.

[0054] It also includes S21: preparing foil from strongly magnetic metals through smelting, forging, hot rolling, cold rolling and annealing processes.

[0055] It also includes, S22: physically processing the annular foil and the backing paper to form a composite annular foil. Through pressing and bonding processes, a strongly magnetic metal foil is combined with the backing paper to form a composite foil. The annular foil is a sheet formed by cutting a long strip; specifically, it is a roll of long material cut to a preset size by automated equipment for later use.

[0056] It also includes, S23: wrapping an annular foil onto a columnar smoke-generating matrix to form a strip, and cutting it into matrix segments. Using a parallel rolling and bonding process, the composite foil is wrapped onto the aerosol matrix to form a smoke-generating strip, which is then cut to obtain smoke-generating units, i.e., matrix segments. The circumferential wrapping area of ​​the annular foil should be no less than 70% of the side surface area of ​​the columnar matrix segment, preferably no less than 85%.

[0057] It also includes S31: using parallel flat winding and bonding processes to wrap low-grammage paper to form a thin-walled cigarette tube; or using oblique winding and bonding processes to wind high-grammage paper to form a hollow, thick-walled cigarette tube.

[0058] It also includes, S32: inserting the cooling section, filter section and matrix section into the thick-walled hollow cigarette tube in sequence to form a circumferentially heated electromagnetic atomizing cartridge; or, arranging the cooling section, filter section and matrix section in sequence and then using a winding process to wind low-grammage paper around the outer periphery to form a circumferentially heated electromagnetic atomizing cartridge.

[0059] Compared to the traditional method of indirectly heating the aerosol matrix by using circumferentially arranged heating elements in the smoking device, the structural design of this invention incorporates a circumferentially arranged annular foil heating sensor inside the cartridge, achieving rapid and direct "internal" circumferential electromagnetic induction heating.

[0060] Example 4

[0061] To further verify the feasibility of the internal circumferential electromagnetic heating mode of this invention, the coupling effect was simulated using COMSOL Multiphysics software, and the magnetic field distribution results are as follows: Figure 5 and Figure 6 As shown.

[0062] In one simulation model setup, an electromagnetic atomizing cartridge is inserted into the cartridge compartment of an electromagnetic induction heating module; the induction coil is a solenoid type with an inner diameter of 8.6 mm, an effective height of 20 mm, an input current of 2 A, and a signal frequency of 5 MHz; the cartridge has an outer diameter of 7 mm and a height of 42 mm; the annular foil heating sensor has a thickness of 0.02 mm, an outer diameter of 6.8 mm, a height of 12 mm, and a relative permeability of 5,000; the longitudinal center of the annular foil heating sensor corresponds to the longitudinal center of the solenoid.

[0063] Figure 5 The diagram illustrates the distribution of magnetic flux in the electromagnetic induction heating module of this embodiment (excluding the cigarette cartridge and the annular foil heating sensor). It can be seen that the areas of high magnetic field strength are concentrated in the inner space of the solenoid. When a cigarette cartridge containing the aforementioned annular foil heating sensor is inserted into the solenoid for heating, a relatively strong magnetic flux also appears in the heating sensor, and its distribution is relatively uniform to a certain extent. Figure 6 As shown (the solenoid is not shown here). Combined Figure 5 and Figure 6 It can be observed that the circumferentially distributed annular foil heating sensor in this invention is very close to the inner side of the coil, which can form a strong electromagnetic induction coupling, indicating that the application of electromagnetic atomizing cartridges with internal circumferential heating is highly likely.

[0064] Example 5

[0065] The difference from the aforementioned embodiments lies in that the metal foil is laminated with graphite paper to form the heating foil. Utilizing the excellent thermal conductivity and insulation properties of graphite paper, efficient and uniform heating is achieved, and external smoke pipe scorching is effectively prevented, thereby improving the user experience.

[0066] The graphite paper has a carbon content exceeding 90 wt%, preferably above 95 wt%, to ensure excellent thermal conductivity. The thickness of the graphite paper is between 0.02-0.1 mm, preferably 0.03-0.06 mm, to balance thermal conductivity, insulation, and mechanical strength. The thickness of the magnetic metal foil is between 0.003-0.03 mm, preferably 0.005-0.02 mm, to ensure good induction heating effect and flexibility.

[0067] Due to the grain orientation of graphite paper, its thermal conductivity differs significantly between the horizontal and vertical directions, exhibiting anisotropy. After controlling the grain orientation, its in-plane thermal conductivity can reach a maximum of 1500 W / mK, while its vertical thermal conductivity is generally in the range of 5-20 W / mK. The low vertical thermal conductivity of graphite paper effectively confines heat around the aerosol matrix, reducing heat transfer to the external smoke tube circumferentially, thus preventing scorching and improving heat utilization efficiency. In this application, the primary heat conduction direction of the heating mode is from the circumferential (radial) direction to the internal aerosol matrix. Simultaneously, the high horizontal thermal conductivity of graphite paper facilitates rapid and uniform heat transfer between the metal foil and the aerosol matrix along the axial direction of the cartridge, improving heating efficiency and ensuring uniform atomization.

[0068] In addition, graphite paper has a good sealing effect, which can prevent or slow down the leakage or escape of liquid components and fragrances in the aerosol matrix during storage. During the suction process, it can also prevent the possibility of circumferential airflow running around. In addition, graphite paper also provides a certain mechanical support. In summary, ① the heat insulation properties of graphite paper effectively reduce heat loss, concentrating heat in the aerosol matrix, significantly improving heat utilization and extending the runtime of a single use, i.e., improving heat utilization efficiency; ② the heat insulation effect of graphite paper effectively prevents the external tube from scorching due to heat, avoiding unpleasant odors and ensuring the pure taste of the aerosol, i.e., preventing scorching; ③ the high horizontal thermal conductivity of graphite paper allows heat to be quickly and evenly transferred to the aerosol matrix, thereby achieving uniform atomization and providing a better taste experience, i.e., uniform atomization; ④ graphite paper has a certain degree of airtightness, which can prevent the leakage of volatile components in the aerosol matrix, maintain product quality, and extend shelf life, i.e., good sealing; ⑤ graphite paper has a certain degree of mechanical strength, which can provide support for the aerosol matrix, maintain the stability of the cartridge shape, and facilitate production, transportation, and use.

[0069] refer to Figure 7 This refers to a type of e-cigarette cartridge suitable for granular or paste-like aerosol bases. (Reference) Figure 8 This is a type of e-cigarette cartridge suitable for strip-shaped aerosol substrates. The heating sensor is a metal foil 102, which is composited with graphite paper 103 and wrapped around the aerosol substrate 101 to form a magnetic smoke generator; it also includes a slender columnar external smoke tube 4 and an end cap (suitable for granular or paste-like heating substrates), constituting an electromagnetic atomizing e-cigarette cartridge. The metal foil 102 can be constructed using various configurations and materials as described in the aforementioned embodiments.

[0070] A type of e-cigarette cartridge suitable for granular or paste-like aerosol matrix, the preparation steps of which are as follows:

[0071] S1: Preparation of graphite paper: High-carbon phosphorus flake graphite is chemically treated, such as through oxidation intercalation, high-temperature expansion, and then rolled into graphite paper of specific thickness and specifications.

[0072] S2: Preparation of magnetic composite paper: The prepared graphite paper is bonded to magnetic metal foil through calendering, bonding, or other methods to form magnetic composite paper. Hot pressing, adhesive bonding, and other methods can be used.

[0073] S3: Preparation of magnetic tubular structure: Magnetic composite paper is rolled and bonded into a tubular shape, and then cut into the required magnetic segments.

[0074] S4: Assembly: Install the magnetic plug into the external smoke tube and fix it in place.

[0075] S5: Aerosol Matrix Filling: A filter section, cooling section, granular or paste-like aerosol matrix, and plug are filled into the nested tube structure to form a slender, columnar electromagnetic atomizing cartridge. The magnetic tube segment and the aerosol matrix together form a magnetic smoke generator.

[0076] A type of e-cigarette cartridge suitable for strip-shaped aerosol matrix, the preparation steps of which are as follows:

[0077] S1: Preparation of graphite paper: High-carbon phosphorus flake graphite is chemically treated, expanded at high temperature, and then rolled into graphite paper of specific thickness and specifications.

[0078] S2: Preparation of magnetic composite paper: The prepared graphite paper and magnetic metal foil are combined together by calendering, bonding and other methods to form magnetic composite paper.

[0079] S3: Preparation of magnetic smoke generator: Magnetic composite paper is rolled and bonded to the periphery of a continuous block aerosol matrix and cut into small segments to form a magnetic smoke generator.

[0080] S4: Winding and molding: The filter section, cooling section, magnetic smoke generator, and sealing section are coaxially wound and bonded using cigarette paper to form a slender, cylindrical electromagnetic atomizing cartridge.

[0081] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0082] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic atomizing cartridge that is circumferentially heated from within the cartridge, characterized in that, It includes a filter section, a cooling section, and a matrix section connected coaxially in the longitudinal direction. The matrix section is surrounded by an arc-shaped heating foil containing ferromagnetic or subferromagnetic materials. It also includes a hollow smoke tube, which is sleeved on the outside of the filter section, the cooling section, and the matrix section to form a columnar smoke cartridge.

2. The electromagnetic atomizing cartridge that undergoes circumferential heating from within the cartridge according to claim 1, characterized in that, The heating foil is a strongly magnetic metal foil, or a composite foil made of a strongly magnetic metal foil and a backing paper.

3. The electromagnetic atomizing cartridge that undergoes circumferential heating from within the cartridge according to claim 2, characterized in that, The backing paper is tissue paper, and the strongly magnetic metal foil is tightly and physically bonded to the tissue paper with an adhesive.

4. The electromagnetic atomizing cartridge that undergoes circumferential heating from within the cartridge according to claim 2, characterized in that, The thickness of the strongly magnetic metal foil is 0.003-0.03 mm.

5. The electromagnetic atomizing cartridge that undergoes circumferential heating from within the cartridge according to claim 2, characterized in that, The backing paper is graphite paper with a thickness of 0.02-0.1 mm.

6. The electromagnetic atomizing cartridge that undergoes circumferential heating from within the cartridge according to claim 2, characterized in that, The strongly magnetic metal foil is a single alloy or single-element metal material, configured as a single-layer structure.

7. The electromagnetic atomizing cartridge for circumferential heating from within the cartridge according to claim 2, characterized in that, The strongly magnetic metal foil is a composite metal material containing two or more metals, configured as a multilayer structure.

8. The electromagnetic atomizing cartridge that undergoes circumferential heating from within the cartridge according to claim 1, characterized in that, The heating foil is wound around the periphery of the substrate segment to form an assembly unit.

9. The electromagnetic atomizing cartridge for circumferential heating from within the cartridge according to claim 1, characterized in that, The heating foil is configured as a multi-segment arc shape, with a composite equivalent center angle ranging from 120° to 360°.

10. The electromagnetic atomizing cartridge that undergoes circumferential heating from within the cartridge according to claim 1, characterized in that, The heating foil is a sheet cut from a long strip and then wound into a ring.

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