Electromagnetic atomization smoke cartridge containing magnetic metal paper

Abstract

The utility model provides an electromagnetic atomization smoke cartridge containing magnetic metal paper. The electromagnetic atomization smoke cartridge comprises a matrix section, a cooling section and a filter tip section which are sequentially and coaxially connected in the longitudinal direction. The metal paper is wound on the outer sides of the substrate section, the cooling section and the filter tip section to form a columnar cigarette cartridge, and the metal paper is formed by compounding a ferromagnetic metal foil and cigarette paper; and the metal paper part containing the ferromagnetic metal foil is correspondingly wound on the substrate section. A smoke tube of the electromagnetic atomization smoke cartridge is composed of metal paper formed by partially compounding strong magnetic metal foil and cigarette paper, a formed annular foil heating receptor is used for annularly wrapping a matrix section, and the annular foil embedded in the smoke tube plays a triple role of an electromagnetic induction circumferential heating body, a mechanical support reinforcing body and a leakage blocking layer at the same time. By means of the design, high heating efficiency, excellent heating uniformity and excellent reliability can be guaranteed, and application of resistance heating type smoking sets and electromagnetic induction heating type smoking sets can be compatible.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electronic cigarette atomization, and specifically discloses an electromagnetic atomization cartridge containing magnetic metal paper. BACKGROUND

[0002] According to the definition of the World Health Organization (WHO) on the official website, a heat-not-burn tobacco product usually uses a heating system powered by a battery to heat specially designed tobacco components to about 350 DEG C for carbonization without combustion, and the carbonization temperature is much lower than the combustion temperature of 600-700 DEG C of traditional cigarettes, which is a new type of tobacco product. In the aerosol generating article, the inhalable aerosol is usually generated by transferring heat from the heating element to the aerosol substrate and causing carbonization. During heating, volatile compounds are released from the aerosol-forming substrate and entrained in the air for the user to inhale.

[0003] The mainstream application mode of the existing heat-not-burn cartridge is resistance center heating and electromagnetic center heating, especially plug-in electromagnetic center heating. The plug-in electromagnetic center heating usually embeds a thick sheet type heating susceptor in the aerosol substrate of the electromagnetic atomization cartridge to generate heat. This cartridge structure has several limitations, such as: first, the collaborative winding process of the heating susceptor strip and the aerosol substrate has high complexity; second, the thickness of the commercially available heating susceptor strip is usually between 60 and 100 microns, and this thick sheet configuration makes it difficult to cut the columnar smoking body online at high speed, and the cutter is prone to wear; third, the contact area between the heating susceptor and the aerosol substrate is limited, and incomplete carbonization can be seen after smoking; finally, due to the shielding effect of the annular aluminum foil paper on the high-frequency magnetic field emitted by the electromagnetic smoking tool, the outer layer of this cartridge is not suitable for using aluminum foil paper to prevent moisture and leakage, otherwise it will affect the accuracy and stability of electromagnetic induction coupling.

[0004] There is also a non-plug-in barrel-shaped baking heating mode, which mainly adopts resistance circumferential heating mode, that is, a circumferential heating smoking tool is used to heat the cartridge. The smoking tool is provided with an annular circumferential heating element on the inner wall of the cartridge compartment, and aerosol is formed by physically baking the built-in cartridge at low temperature. In this circumferential heating mode from the outside of the cartridge, heat must first penetrate the cigarette paper to reach the aerosol substrate, which is an indirect thermal contact method, so there are defects such as slow smoking speed, paper paste taste and glue taste of aerosol; moreover, this resistance circumferential heating smoking tool does not have the possibility of being widely commercialized in electromagnetic atomization cartridges, because it faces many challenges in temperature measurement and control mechanism, power stability and heat energy loss, so it cannot form a relatively stable and uniform aerosol generating electromagnetic heating system.

[0005] In view of this, this utility model proposes an electromagnetic atomizing cartridge containing magnetic metal paper, which can achieve both efficient electromagnetic heating and the convenience of direct circumferential heating. Utility Model Content

[0006] To address the aforementioned problems in the prior art, this invention provides an electromagnetic atomizing cartridge containing magnetic metal paper.

[0007] An electromagnetic atomizing cartridge containing magnetic metal paper includes a matrix section, a cooling section, and a filter section connected coaxially in sequence along the longitudinal direction; it also includes metal paper wound around the outer side of the matrix section, the cooling section, and the filter section to form a columnar cartridge, wherein the metal paper is partially composited with a strongly magnetic metal foil and cigarette paper; the metal paper containing the strongly magnetic metal foil is at least partially wound around the matrix section.

[0008] Preferably, the strongly magnetic metal foil is a single metal or a single alloy material, configured as a single-layer structure.

[0009] Preferably, the strongly magnetic metal foil is a composite metal material configured as a multi-layer structure.

[0010] Preferably, the thickness of a single layer of the cigarette paper is 0.02-0.08 mm.

[0011] Preferably, the thickness of a single layer of the strongly magnetic metal foil is 0.003-0.03 mm.

[0012] Preferably, the metal paper contains flame retardants and / or nicotine.

[0013] Preferably, the metal paper is composed of a strong magnetic metal foil and tobacco paper or cigarette paper.

[0014] Preferably, after the metal paper is wound around the substrate segment, the overlapping area of ​​the strongly magnetic metal foil and the substrate segment is not less than 70% of the side surface area.

[0015] Preferably, after the metal paper is wound around the substrate section, the strongly magnetic metal foil is located inside the flue near the substrate section.

[0016] Preferably, no magnetic heating sensor is provided inside the matrix segment.

[0017] Preferably, the Curie temperature of the metal paper is between 300-600°C.

[0018] Compared with existing technologies, the advantages of this invention are as follows: the outer tube of the tobacco cartridge is made of a metal paper composite of a strongly magnetic metal foil and cigarette paper. The resulting annular foil heating sensor is used to circumferentially cover the aerosol matrix section. The annular foil embedded in the tobacco tube simultaneously plays a triple role as an electromagnetic induction circumferential heating element, a mechanical support reinforcement, and a leakage barrier layer. This design ensures high heating efficiency, excellent heating uniformity, and superb reliability, and is compatible with both resistance heating and electromagnetic induction heating tobacco devices. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a winding method for electromagnetic atomizing cigarette cartridges.

[0020] Figure 2 This is a schematic diagram of the longitudinal cross-section of the electromagnetic atomizing cartridge in Example 1.

[0021] Figure 3 This is a schematic diagram of the overall magnetic flux distribution of the annular foil heating sensor in Example 1.

[0022] Figure 4 A diagram showing the magnetic flux distribution along the arc length of the side surface of the annular foil heating sensor in Example 1 is drawn.

[0023] Figure 5 This is a schematic diagram of the transverse cross-section of the electromagnetic atomizing cartridge in Example 2.

[0024] Figure 6 The thermogravimetric analysis (TGA) curves of the three-layer metal paper sample in Example 2 are shown.

[0025] Figure 7 The image shows the differential scanning calorimetry (DSC) curve of the three-layer metal paper sample in Example 2.

[0026] Figure 8 This is a longitudinal cross-sectional schematic diagram of the electromagnetic atomizing cigarette cartridge in Example 4. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] like Figures 1 to 2The electromagnetic atomizing cartridge shown comprises a matrix section 1, a cooling section 2, and a filter section 3, which are coaxially connected longitudinally. The matrix section 1 is an aerosol matrix, including various continuous forms of matrix, 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-piece porous, 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 aerosol matrix described in this invention.

[0030] The electromagnetic atomizing cartridge also includes an outer metal paper 4, which is wound around the outside of the matrix section 1, cooling section 2, and filter section 3 to form a cylindrical cartridge. After being wound and bonded together, the metal paper forms the cartridge tube. The number of turns of the cartridge tube depends on the thickness of the metal paper 4. For thinner metal paper, one or more layers can be wound, while for thicker metal paper, only one layer can be wound. Both methods are intended to form a cartridge tube with sufficient strength.

[0031] The metal paper 4 is composed of low-grammage cigarette paper 401 and strong magnetic metal foil 402. After the cigarette is formed, the portion of the metal paper 4 containing the strong magnetic metal foil 402 is wound around the matrix section 1.

[0032] This structural design constructs an electromagnetic atomizing cartridge for circumferential heating mode. Its key features are: (1) a metal paper 4 with locally composited strong magnetic metal foil 402 is used to roll the cigarette to construct the cigarette tube; (2) an ultra-thin annular strong magnetic metal foil 402 is used as a heating sensor, which can be coupled with a high-frequency magnetic field when used in electromagnetic cigarette devices; (3) the heating mode is to implement circumferential heating from the inside of the cartridge itself. The heat originates from the inside of the cartridge, that is, the strong magnetic metal foil 402 disposed on the inner side of the cigarette tube wall, but acts on the circumferential side of the matrix segment 1.

[0033] The aforementioned low basis weight is a relative concept, representing a certain numerical range. Adjustments are made based on experimental results in engineering practice. In this invention, low basis weight paper is defined as paper with a basis weight of 20-60 g / m³. 2 These correspond to thicknesses between 0.02 and 0.08 mm. In this invention, the thickness of the strong magnetic metal foil 402 is set between 0.003 and 0.03 mm. In this example, the two are partially laminated in a single layer, with the thickness at the laminated area between 0.023 and 0.083 mm (excluding the thickness of the adhesive layer), while the thickness of the paper is retained at the unlaminated areas. This thickness range and the partially laminated metal paper 4 are suitable for parallel rolling and bonding processes, closing and overlapping around the cylindrical cartridge to form a thin-walled cigarette tube.

[0034] In one implementation, the strong magnetic metal foil 402 adopts a single-layer structure of a single alloy or single-element metal material to form a single heating sensor. Its Curie temperature is usually 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 used to prepare a 0.03 mm thick strongly magnetic metal foil 402, which is then combined with 25 g / m³ of zinc alloy. 2 A single-layer composite of hemp pulp-based cigarette paper is partially formed and then cut to a suitable size to serve as the metal paper 4 used to cover the aforementioned cigarette cartridge components. After cigarette forming, a strongly magnetic metal foil 402 is constructed as a ring-shaped foil single-element heating sensor with a Curie temperature in the range of 300-600°C. The weight percentage distribution of this iron-nickel-zirconium-based special alloy is 2.00-35.00% iron, 60.00-90.00% nickel, and 0.40-10.00% zirconium. The single-alloy heating sensor formed based on this alloy has a low initial permeability at room temperature (20°C), 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 a window for anti-counterfeiting identification and control. 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 is prepared into a strong magnetic metal foil 402 with a thickness of 0.015 mm, and then combined with 40 g / m 2 A partial single-layer composite of hemp pulp and grass pulp mixed cigarette paper of gram weight is then cut to an appropriate size to prepare metal paper 4 for winding the aforementioned cigarette cartridge components. Among them, 1J50 is finally constructed as a ring foil single heating sensor with a Curie temperature of about 450°C.

[0037] For example, pure nickel (Ni) elemental metal material is prepared into a foil material with a thickness of 0.025 mm and used for similar purposes as mentioned above, forming a ring-shaped foil single heating sensor with a Curie temperature of approximately 354°C.

[0038] In one implementation, the strong magnetic metal foil 402 adopts a multi-layer structure composed of multiple alloy materials.

[0039] For example, a composite heat sensor assembly 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), which are in close physical contact (achieved through electroplating, deposition, or welding). 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 matrix segment 1, 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. At the second Curie temperature, the second heat sensor material reversibly changes from a ferromagnetic phase to a paramagnetic phase. This phase transition of the second heat sensor material can be detected during induction heating of the matrix segment 1 without physical contact with the second heat sensor material. Detection of the phase transition allows for control of the heating of the matrix segment 1. For example, induction heating can be automatically stopped when a phase transition associated with the second Curie temperature is detected. Therefore, overheating of the matrix segment 1 can be avoided, even if the first heating sensor material, which is mainly responsible for heating the matrix segment 1, 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 down 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 matrix segment 1 can be controlled by repeatedly starting and stopping the induction heating device.

[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, which has strong magnetic properties. This material is then cut to an appropriate size and used for similar purposes to form a ring-shaped foil composite heating sensor component. The Curie temperature of nickel is 354 °C, while the Curie temperature of the iron-chromium-aluminum Kanthal alloy is 1,000 °C.

[0041] like Figure 2As shown, cigarette paper 401 and a strongly magnetic metal foil 402 are partially laminated on one side to form metal paper 4, which is then wound into an outer cigarette tube. Specifically, to optimize the winding process and reduce the step height at the adhesive overlap, the single-layer thickness of the cigarette paper is between 0.02-0.08 mm, and the strongly magnetic metal foil 402 is fixedly bonded to the cigarette paper 401 with an adhesive. After the metal paper 4 is wound, the strongly magnetic metal foil 402, after wrapping around the substrate segment 1, has an overlap area with the substrate segment 1 that is not less than 70% of its side surface area, preferably more than 75%, to achieve higher heating efficiency, such as 85%. After the strongly magnetic metal foil 402 is wound around the substrate segment 1, it is in direct contact with its side surface, enabling large-area and rapid heat transfer during subsequent heating.

[0042] Because the adhesive is in direct contact with the strongly magnetic metal foil 402, and the foil may reach temperatures exceeding 400°C during heating, the adhesive must meet two key requirements: high-temperature resistance and food-grade quality. High-temperature resistance requires the adhesive to withstand 400°C without releasing harmful substances, while food-grade quality ensures its safety. Adhesives that meet these composite requirements include silane coupling agent-modified adhesives, polysiloxane-modified adhesives, or high-temperature epoxy resins. During the lamination process, the amount of adhesive used should be minimized, as the required bond strength for this composite paper is not high.

[0043] The cigarette paper 401 contains a flame retardant. Traditional cigarette paper is typically composed of cellulose (mainly derived from hemp pulp, wood pulp, or straw pulp), calcium carbonate, and combustion aids (such as potassium citrate or sodium citrate). However, this traditional cigarette paper is not suitable for heat-not-burn applications. This invention modifies the paper by adding...

[0044] (1) Flame retardant components: Phosphorus-based, halogen-based, boron-based and inorganic elements are added to inhibit the combustion of cigarette paper 401 and reduce the release of harmful substances and odors.

[0045] (2) Nicotine content: Adding nicotine or nicotine salts to cigarette paper 401 can not only provide a certain amount of nicotine release, but also buffer the pyrolysis process of cellulose, thereby reducing the generation of harmful substances.

[0046] To verify the feasibility of coupling between the annular foil heating sensor 402 and the high-frequency alternating magnetic field generated by the electromagnetic smoker in this invention, a simulation was performed. The coupling effect was simulated using COMSOL Multiphysics software, and the magnetic flux density distribution is as follows: Figure 3 and 4 As shown, where Figure 4 The middle arc length corresponds to Figure 3The longitudinal extension length. In this simulation, a solenoid coil is selected as the magnetic excitation coil, and the annular foil-shaped heating sensor 402 formed by the metal paper 4 is placed in the coil, and a current of 2A is applied. The resonant frequency of the heating circuit is 5MHz.

[0047] The results show that Figure 3 The distribution of magnetic flux in the annular foil heating sensor 402 is shown in the figure. It can be seen that a strong magnetic flux appears in the heating sensor 402, reaching a maximum of 0.29 T (Tesla). The magnetic flux distribution along the arc length direction of the annular foil heating sensor 402 is shown in the figure. Figure 4 As can be seen, the magnetic flux density in most areas of the side surface is between 0.18 and 0.29 T, and the distribution is relatively concentrated. Combined with... Figure 3 and Figure 4 It can be observed that the position of the circumferentially distributed annular foil heating sensor 402 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 circumferentially heated electromagnetic atomizing cartridges is highly likely.

[0048] The electromagnetic atomizing cartridge of this utility model can achieve the following technical benefits: (1) Heating efficiency: The structure of the cartridge is optimized, and circumferential heating is carried out from the inside of the cartridge to directly heat the aerosol matrix, reduce heat loss, improve heating efficiency, and improve the quality of smoke and user taste; (2) Heating uniformity: Through reasonable heating mode design, the aerosol matrix is ​​ensured to be heated evenly, avoiding local overheating or underheating, so as to provide a consistent and stable heating effect; (3) Compatibility: It is designed to be compatible with different heating types of smoking devices, such as resistance heating type and electromagnetic induction heating type, to expand the application range and market competitiveness of the cartridge; (4) Reliability: It avoids cartridge deformation, leakage or other hidden dangers, improves product reliability, and ensures user experience.

[0049] Example 2

[0050] like Figure 5 As shown, this embodiment differs from Embodiment 1, which involves a partial, one-sided composite of the strong magnetic metal foil 402 and cigarette paper 401. In this embodiment, a thinner layer of tobacco paper 403 is laminated between the two, forming a three-layer "sandwich" structure of metal paper 4. After the metal paper is wound into a cigarette tube, the strong magnetic metal foil 402 is located in the inner layer, in contact with the matrix segment 1; the tobacco paper 403 is located in the middle layer; and the cigarette paper 401, which is ordinary cigarette paper and does not contain tobacco components, is located in the outer layer. This structural design allows the tobacco paper 403 to be carbonized and release a small amount of nicotine-containing aerosol when the strong magnetic metal foil 402 heats up. Simultaneously, it slows down the further heat transfer to the cigarette paper 402, helping to control overheating of the cigarette paper and prevent a burnt taste.

[0051] Based on this embodiment, the weight and heat changes of the three-layer metal paper during the heating process were examined by experimental thermal analysis. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to conduct tests in the range of 25-370℃ at a rate of 10℃ / minute.

[0052] Figure 6 This is the TGA curve of the three-layer metal paper sample 4 in this embodiment. It can be seen that as the temperature rises, the sample begins to lose weight. At 90-100℃, the mass begins to stabilize, with the weight loss accounting for a small percentage (2.91%), indicating that the weight loss in this temperature range is mainly due to the evaporation of moisture from cigarette paper 401 and tobacco paper 403. With further temperature increases, starting from 210℃, weight loss continues, becoming significant at 300℃. Above 350℃, the weight loss reaches 19.17%, indicating that within this temperature range, cigarette paper 401 undergoes partial thermal decomposition, and the tobacco in tobacco paper 403 is carbonized, with some components evaporating. Generally, the 300-350℃ temperature range corresponds to the temperature of the heating sensor 402 in circumferential electromagnetic heating applications.

[0053] Figure 7 This is the DSC curve of sample 4 of the three-layer metal paper in this embodiment. It can be seen that there is a significant endothermic peak at 90-100℃, indicating a significant phase transition within this temperature range. In the 150-300℃ temperature range, the curve is smooth and flat. From 300℃ onwards, endothermic phase transitions reappear, peaking at approximately 360℃, indicating another significant phase transition at this temperature. The thermal behavior reflected by the DSC curve corresponds to the standard weight loss behavior in the TGA, and the two are consistent.

[0054] During the use of the e-cigarette cartridge, the tube is inevitably heated, causing the release of moisture, volatile substances, and some components of the adhesive from the modified cigarette paper. These volatiles affect the smoking experience and pose potential safety risks. To minimize the release of these volatiles, it is necessary to strictly control the moisture and volatile substance content in the paper and reduce the amount of adhesive used. However, this is an unavoidable situation during cartridge use. To further reduce the release of these volatile substances, it is necessary to control the moisture and volatile substance content in the paper and reduce the amount of adhesive used, while also optimizing the temperature control strategy of the tube to reduce its heating level.

[0055] The cartridge manufacturing method in this embodiment mainly includes: aerosol matrix segment molding, metal-paper composite molding, and coaxial winding molding of cartridge components. Specifically,

[0056] S1: Wrap the aerosol matrix substrate and cut it into columnar matrix segments 1, or mold the aerosol matrix substrate into columnar matrix segments 1;

[0057] S2: The strong magnetic metal foil 402 is partially composited with cigarette paper 401 to form metal paper 4, or the strong magnetic metal foil 402 is partially composited with tobacco paper 403 and cigarette paper 401 to form metal paper 4.

[0058] S3: The metal paper 4 is wound onto the outer side of the coaxially connected matrix section 1, cooling section 2 and filter section 3 to form an electromagnetic atomizing cartridge, wherein the strong magnetic metal foil 402 is located on the inner wall of the cartridge, corresponding to the matrix section 1.

[0059] In the preparation of the metal paper 4, to ensure high-quality composite materials, the cleanliness of the cigarette paper 401, tobacco paper 403, and strongly magnetic metal foil 402 must be strictly controlled, and key process parameters such as pressure, tension, temperature, and speed must be precisely adjusted. It is worth noting that this invention employs a partial composite technique, meaning the area of ​​the strongly magnetic metal foil 402 is smaller than the area of ​​the cigarette paper 401, and continuous composite is only performed in specific areas. This is because, functionally, only the tube wall area corresponding to the matrix segment 1 requires the metal foil, while other areas do not.

[0060] Compared with existing electromagnetic induction center heating technology, the contact area between the heating sensor and the aerosol matrix is ​​significantly increased in the electromagnetic induction circumferential heating mode of this invention, thereby improving the overall carbonization rate. Taking a columnar aerosol matrix as an example, let its diameter be D and its height be H. In the center heating mode, the maximum contact area S between the thick-plate heating sensor embedded at the axial position and the aerosol matrix is... 中 =2DH, which is twice the area of ​​the thick sheet heating sensor. In the circumferential heating mode, the maximum contact area S between the annular foil heating sensor 402 positioned on the side and the aerosol matrix is... 周 =πDH, where π is approximately 3.14. Clearly, S 周 Approximately S 中 1.5 times.

[0061] To improve the heating and carbonization effect on the aerosol matrix, sufficient thermal contact area must be ensured. In this invention, the coverage rate of the contact area between the annular foil heating sensor 402 and the columnar aerosol matrix relative to the side surface area of ​​the columnar matrix is ​​set to be no less than 70%, preferably no less than 85%.

[0062] Example 3

[0063] To further verify the effect of strongly magnetic metal foil on the inductance of the coil system in an electromagnetic smoking device, the signal feedback of the heating sensor containing strongly magnetic metal foil to the coil was analyzed.

[0064] Generally, the circuit system of an electromagnetic smoking device can identify one or more changes in physical quantities mapped by changes in inductance. Through pre-set target thresholds or criteria, the electromagnetic smoking device can initially identify whether a legitimate heating sensor has entered the effective area of ​​the coil, or whether a legitimate heating sensor has left. Based on this, the electromagnetic smoking device can initiate a corresponding program, such as starting heating or power-off protection. To achieve sensitive signal capture and reasonable subsequent processing, this invention sets the range of inductance change in the system caused by inserting metal paper into the electromagnetic smoking device coil at room temperature to between 1-30 nH, as one of the target conditions for anti-counterfeiting identification. Sensors exceeding this range will be judged as invalid heating sensors, and the system will quickly activate a protection countermeasure program.

[0065] The aforementioned physical quantities include characteristic parameters related to the magnetism or temperature of the heating sensor, such as temperature, magnetic flux, magnetoresistance, impedance, capacitive reactance, current, voltage, and frequency. By setting multiple relevant target conditions, the system can monitor the impact of the sensor on these physical quantities during operation, further perform anti-counterfeiting identification of the electromagnetic atomizing cartridges, and use this information for controlling the operating temperature and recording the number of puffs.

[0066] In this experiment, two types of strongly magnetic metal foils, A and B, were selected. A is a single-material 4J36 iron-nickel-cobalt alloy, and B is a composite material made of nickel, copper, and 440C stainless steel. Each metal foil was prepared in thicknesses of 0.01 mm and 0.025 mm. The metal foils were combined with cigarette paper to form a metal paper, which was then wound and bonded in parallel to form a cigarette tube. The resulting annular foil heating sensor had an outer diameter of 7 mm and a height of 12 mm. The test frequency was set to 1 MHz or 5 MHz. Without any metal inserted, the initial inductance of the coil at 1 MHz and 5 MHz was 88 nH and 92 nH, respectively. Subsequently, cigarette tubes containing different types and thicknesses of metal foil were inserted into the coil, and the corresponding inductance changes were measured at both frequencies. The results are shown in Table 1.

[0067] Table 1: Data on the Influence of the Annular Foil Heating Sensor on Coil Inductance and Related Parameters

[0068] Type Thickness Inductance variation at 1 MHz (nH) Inductance variation at 5 MHz (nH) A 0.01 1.8 2.6 A 0.025 3.2 5.4 B 0.01 1.3 2.1 B 0.025 2.4 3.9

[0069] As can be seen, the change in inductance increases accordingly with the increase in the thickness of the metal foil, but this relationship is non-linear. Therefore, this invention has a wide range of applications and can be used with various electromagnetic smoking devices; only the corresponding configuration options need to be set at the factory.

[0070] Example 4

[0071] Corresponding to the inner structure layout of Embodiment 1, in this embodiment, a strongly magnetic metal foil 402 is partially wound around the outer side of the cigarette paper 401 for single-sided lamination, forming the metal paper 4 which is finally wound into the outer cigarette tube, as shown. Figure 8 As shown, the thickness of a single layer of cigarette paper is between 0.02 and 0.08 mm, and a strong magnetic metal foil 402 is fixedly bonded to the cigarette paper 401 by an adhesive. This has the advantage of requiring lower precision in the winding process and achieving a similar heating effect.

[0072] 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.

[0073] 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 containing magnetic metal paper, characterized in that, It includes a matrix section, a cooling section, and a filter section connected coaxially in the longitudinal direction in sequence; it also includes a metal paper that is wound around the outside of the matrix section, the cooling section, and the filter section to form a columnar tobacco cartridge, the metal paper being partially composited with a strongly magnetic metal foil and cigarette paper; the metal paper is at least partially wound around the matrix section.

2. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, The strongly magnetic metal foil is a single metal or a single alloy material, configured as a single-layer structure.

3. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, The strongly magnetic metal foil is a composite metal material configured as a multi-layer structure.

4. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, The thickness of a single layer of the cigarette paper is 0.02-0.08 mm.

5. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, The thickness of a single layer of the strongly magnetic metal foil is between 0.003 and 0.03 mm.

6. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, After the metal paper is wound around the matrix segment, the overlapping area of ​​the strongly magnetic metal foil and the matrix segment is not less than 70% of the side surface area.

7. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, After the metal paper is wound around the matrix section, the strongly magnetic metal foil is located inside the flue near the matrix section.

8. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, No magnetic heating sensor is installed inside the matrix segment.

9. The electromagnetic atomizing cartridge containing magnetic metal paper according to claim 1, characterized in that, The Curie temperature of the metal paper is between 300-600℃.

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