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

Abstract

According to the electromagnetic atomization smoke cartridge, circumferential heating is conducted from the interior of the smoke cartridge, an efficient electromagnetic heating mode can be achieved, and direct circumferential heating application can also be achieved. 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] The present invention relates to the field of electronic cigarette atomization, and in particular to an electromagnetic atomization cigarette cartridge which performs circumferential heating from the inside of the cigarette cartridge. Background Art

[0002] According to the definition of the World Health Organization (WHO) on its official website, heat-not-burn (HNB) tobacco products usually use a battery-powered heating system to heat the specially made cigarette components to about 350°C for carbonization, which is much lower than the combustion temperature of traditional cigarettes of 600-700°C. It is a new type of tobacco product. In aerosol-generating products, inhalable aerosols are usually 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 temperature and combustion will release toxic and harmful substances, if the cigarettes are subjected to special process treatment and material innovation, and baked at a relatively low temperature of about 350°C without high-temperature combustion, the problem of tobacco releasing toxic and harmful substances will be solved. As the released volatile compounds cool, the compounds condense to form an aerosol, which can be inhaled by the user. The aerosol can contain fragrances, flavorings, nicotine and other required ingredients.

[0003] The mainstream application methods of existing heat-not-burn cigarette cartridges include resistive center heating and electromagnetic center heating, especially insert electromagnetic center heating. Insert electromagnetic center heating usually embeds a thick sheet heating receptor in the aerosol matrix of the electromagnetic atomization cigarette cartridge to generate heat. This cigarette cartridge structure has several limitations, such as: first, the coordinated winding process of the heating receptor strip and the aerosol matrix is ​​highly complex; second, the thickness of the commercially available heating receptor strip is usually between 60 and 100 microns. This thick sheet configuration makes it difficult to cut the columnar smoke body online at high speed, and the tool is susceptible to wear; third, the contact area between the heating receptor and the aerosol matrix is ​​limited, and after the inhalation is completed, it can be seen that some carbonization is incomplete; finally, since the annular aluminum foil has a certain shielding effect on the high-frequency magnetic field emitted by the smoking device, the outer layer of this type of cigarette cartridge should not be made of aluminum foil to prevent moisture and leakage, otherwise it will affect the accuracy and stability of electromagnetic induction coupling.

[0004] There is also a type of non-insertion barrel baking heating mode, which mainly adopts the resistance circumferential heating mode, that is, the circumferential heating smoking device is used to heat the cigarette cartridge. The smoking device is provided with an annular circumferential heating element on the inner wall of the cigarette cartridge compartment, and the aerosol is formed by physically baking the built-in cigarette cartridge at low temperature. In this mode of circumferential heating from the outside of the cigarette cartridge, the heat must first penetrate the cigarette paper before reaching the aerosol matrix. It is an indirect thermal contact method, so there are defects such as slow smoke output speed and aerosol with paper paste and glue smell; moreover, this type of resistance circumferential heating smoking device does not have the possibility of being widely used in electromagnetic atomization cigarette cartridges for commercial use, because it faces many challenges in temperature measurement and control mechanism, power consumption stability and heat energy loss, so it is impossible to form a relatively stable and uniform aerosol generation electromagnetic heating system.

[0005] In view of this, the present application proposes an electromagnetic atomization cartridge that performs circumferential heating from the inside of the cartridge, which can achieve both efficient electromagnetic heating and the convenience of direct circumferential heating. Summary of the invention

[0006] In order to solve the aforementioned problems of the prior art, the present invention provides an electromagnetic atomization cigarette cartridge, comprising a filter section, a cooling section, and a matrix section coaxially connected along the longitudinal direction, wherein an arc-shaped heating foil containing ferromagnetism or ferrimagnetism is wound around the outer side of the matrix section; and also comprising a hollow cigarette tube, which is sleeved on the outer side of the filter section, the cooling section, and the matrix section to form a columnar cigarette cartridge.

[0007] Preferably, the heating foil is a ferromagnetic metal foil, or a composite foil formed by combining a ferromagnetic metal foil with a backing paper.

[0008] Preferably, the backing paper is Sydney paper, and the ferromagnetic metal foil is tightly physically combined with the Sydney paper via an adhesive.

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

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

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

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

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

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

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

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the traditional mode of inserting a thick sheet-like heating receptor in the axial center area of ​​the cigarette cartridge is eliminated, and an annular magnetic foil is used as a heating receptor to wrap the aerosol matrix to form a smoke-generating body, constituting an electromagnetic atomization cigarette cartridge that performs circumferential heating from the inside of the cigarette cartridge, thereby ensuring large-area physical contact and direct thermal contact between the heating receptor and the aerosol matrix. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the longitudinal section of the electromagnetic atomization cartridge.

[0018] Figure 2 Schematic diagram of the winding of the electromagnetic atomization cartridge.

[0019] Figure 3 It is a schematic diagram of the transverse cross section of the electromagnetic atomization cartridge of Example 1.

[0020] Figure 4 It is a schematic cross-sectional view of the electromagnetic atomization cartridge of the second embodiment.

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

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

[0023] Figure 7 This is a schematic cross-sectional view of the first electromagnetic atomization cartridge of the fifth embodiment.

[0024] Figure 8 This is a schematic cross-sectional view of the second electromagnetic atomization cartridge of the fifth embodiment. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] Reference Figure 1The electromagnetic atomization cartridge includes a filter section 3, a cooling section 2, and a matrix section 1 which are coaxially connected in the longitudinal direction in sequence. The outer surface of the smoke-forming matrix 101 of the matrix section 1 is surrounded by an annular foil 102; it also includes a hollow cigarette tube 4, and the cigarette tube sleeve 4 is arranged on the outer side of the filter section 3, the cooling section 2, and the matrix section 1 to form a columnar cigarette cartridge. The annular foil 102 is used as a heating sensor to form a circumferential wrapping around the smoke-forming matrix 101, and directly heats it from the circumferential direction (i.e., the side of the columnar body) during operation. The smoke-forming matrix 101 includes various continuous forms of matrices, not limited to the limitations of geometric forms and arrangements, including multiple thin sheets, multiple hemp ropes, multiple bundles of fibers, multiple stems, single sponges, single blocks of porous shapes, single tube curls, etc. It can also be classified according to the forms of ordered tobacco shreds, disordered tobacco shreds or herbal pastes, herbal powders, etc., 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 can be configured as an extension section of the matrix section 1 or the filter section 3 to form a similar cooling function, and 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. Or multiple arcs with the same center (tobacco) are evenly or unevenly distributed around the substrate segment 1. The center angle of the composite equivalent arc of the multiple arcs from the cross section of the substrate segment 1 is in the range of 180° to 360°, that is, multiple heating foils with arc peripheral curves should be considered to be within the scope of protection of this application. The center angle should not be less than 120°, especially not less than 180°. Too small an angle will have a poor heating effect. The center angle should not be greater than 360°. Although the arc heating foils of each segment overlap and the annular foil 102 overlap, their equivalent center angles will not be greater than 360°.

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

[0031] The cylindrical cigarette cartridge is wrapped with low-weight paper to form a circumferential electromagnetic heating cigarette cartridge. In the present invention, low-weight paper is defined as paper with a gram weight of 20-60g / m 2 The thin paper in between is suitable for parallel flat rolling and bonding process, and is closed and overlapped on the periphery of the columnar cigarette bomb to form a thin-walled cigarette tube.

[0032] Among them, high-weight paper is used to wrap and wrap to form a thick-walled cigarette tube, which is integrated into a circumferential electromagnetic heating cigarette cartridge. In the present invention, high-weight paper is defined as paper with a gram weight of 120-180g / m 2The thick paper in between is suitable for the oblique winding and bonding process, and is closed and overlapped on the periphery of the columnar cigarette bomb to form a thick-walled cigarette tube.

[0033] Reference Figure 3 , an annular foil 102 is arranged around the aerosol-forming substrate 101, and the smoke tube 4 is sleeved on the outer periphery of the annular foil 102. The annular foil 102 is a ferromagnetic metal foil. "Metal foil" is a term, which is a special film-type material. In the present invention, it is used as a heating sensor and mainly plays a role of generating heat. "Magnetic foil" is a term, which is a special ferromagnetic film material. The annular foil 102 is formed into an annular shape by winding and bonding a ferromagnetic metal foil (the overlap at the end of the winding is not shown in the figure), forming the side wall of the columnar aerosol-forming substrate 101. The inner surface of the annular foil 102 is in close contact with the aerosol-forming substrate 101, and its outer surface is in contact with the smoke tube 4.

[0034] In one embodiment, the ferromagnetic metal foil adopts a single layer structure of a single alloy or a single metal to form a single heating receptor, and its Curie temperature is usually between 300-600°C, which is just suitable for low temperature heating of aerosol products to achieve effective heating and produce rich aerosol.

[0035] For example, a special Fe-Ni-Zr alloy based on iron, nickel and zirconium as raw materials is prepared into a foil material with a thickness of 0.03 mm, cut into a suitable size, and used as a raw material for coating a columnar smoke-forming matrix, and finally as a single heating sensor, whose Curie temperature is in the range of 300-600°C. The weight percentage distribution of this special Fe-Ni-Zr 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 magnetic permeability at room temperature (20°C), not higher than 20,000 Gauss / Oersted, and the preferred range is between 2,000-10,000 Gauss / Oersted. Such material properties will not cause drastic changes in thermal and magnetic physical quantities during temperature changes, which is not conducive to setting anti-counterfeiting identification and control windows. Its initial magnetic permeability shows a peak characteristic as the temperature increases, that is, it has a behavior characteristic of first increasing and then decreasing. After reaching a stable working temperature, the magnetic field still continues to have a heating function to achieve stable operation. The peak characteristic can be a single-peak characteristic curve or a double-peak characteristic curve. The stable working temperature of the heating sensor is on the right side of the peak and close to the nearest peak.

[0036] For example, 1J50 soft magnetic alloy material is prepared into a foil material with a thickness of 0.025 mm and cut into appropriate sizes as a coating raw material for a columnar smoke-forming matrix, and finally as a single heating receptor, with a Curie temperature of about 450°C.

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

[0038] In one implementation, the ferromagnetic metal foil adopts a multi-layer structure formed by compounding multiple alloys.

[0039] For example, a first heating susceptor composed of a first material (aluminum, iron or iron alloy) and a second heating susceptor composed of a second material (nickel or nickel alloy) are in close physical contact (achieved by electroplating, deposition or welding, etc.) to form an integral heating susceptor component, i.e., a composite heating susceptor, as a coating raw material for a columnar aerosol-forming substrate, wherein the first heating susceptor has a first Curie temperature and the second heating susceptor has a second Curie temperature. Due to the close physical contact, the first and second heating susceptor materials have the same temperature when heated. The first heating susceptor material that can be optimized for the heating of the aerosol-forming substrate can have a first Curie temperature that is higher than any predetermined maximum heating temperature. Once the composite heating susceptor has reached the second Curie temperature, the magnetic properties of the second heating susceptor material change significantly. At the second Curie temperature, the second heating susceptor material reversibly changes from a ferromagnetic phase to a paramagnetic phase. This phase change of the second heating susceptor material can be detected during the induction heating of the aerosol-forming substrate without physical contact with the second heating susceptor material. Detection of the phase change can allow control of the heating of the aerosol-forming substrate. For example, the inductive heating can be automatically stopped when a phase change associated with the second Curie temperature is detected. Thus, overheating of the aerosol-forming substrate can be avoided, even if the first heating susceptor material, which is primarily responsible for the heating of the aerosol-forming substrate, does not have a Curie temperature or a first Curie temperature that is higher than the maximum desired heating temperature. After the inductive heating has been stopped, the heating susceptor cools until it reaches a temperature lower than the second Curie temperature. At this point the second heating susceptor material regains its ferromagnetic properties again. This phase change can be detected without contact with the second heating susceptor material and then the inductive heating can be started again. Thus, the inductive heating of the aerosol-forming substrate can be repeatedly started and stopped by the inductive heating device, the temperature control method being achieved by non-contact means.

[0040] For example, pure nickel (Ni) is compounded with iron-chromium-aluminum-Kanthal alloy to prepare a foil material with a thickness of 0.02 mm, and then cut into appropriate sizes as the coating raw material of the columnar smoke-forming matrix, i.e., the composite heating susceptor. Among them, the Curie temperature of nickel is 354°C, while the Curie temperature of iron-chromium-aluminum-Kanthal alloy is 1,000°C.

[0041] The ferromagnetic metal foil of the present invention needs to have an extremely low thickness and good flexibility to facilitate stable maintenance after cutting and forming. From the perspective of processing, the thinner and softer the ferromagnetic metal foil is, the easier it is to deform, wind and shape, and cut. After forming, the contact with the smoke-forming matrix 101 is also relatively close, and the space occupied is relatively small. Through rigorous control, the preferred thickness is set within the range of 0.003-0.03mm, and it is adjusted to a soft state through high-temperature annealing. The hardness is less than 180 at Vickers hardness HV0.2, which effectively ensures the smooth progress of the winding and bonding process, while minimizing the step effect at the overlap.

[0042] Embodiment 2

[0043] Reference Figure 4 The difference between this embodiment and the first embodiment is that the base material of the annular foil 102 adopts a composite structure, specifically, a metal composite paper formed by pressing a ferromagnetic metal foil 1021 and a backing paper 1022. The backing paper 1022 uses a thin backing paper with a thickness range of 0.01-0.06mm to minimize the volume occupied. For example, the thickness of 17g Sydney paper is about 0.02mm. When the cigarette cartridge is rolled and formed, the ferromagnetic 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 a certain heat insulation performance, 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 salt components can be added to the backing paper 1022 to further avoid the burning or sour smell caused by overheating of the paper material of the cigarette tube 4. The most convenient way to add nicotine or nicotine salt is to add tobacco plant fiber components during the manufacturing process of the backing paper 1022.

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

[0046] Furthermore, the backing paper 1022 can be selected to have more than two layers to achieve combination for different purposes. For example, a first backing paper with a weak fragrance (such as mint) can be combined to emit a preset mint fragrance when heated. In addition, this method can also be used to achieve the following purposes, including assisting temperature indication, temperature control, heat insulation or reducing odor.

[0047] Embodiment 3

[0048] This embodiment discloses a method for manufacturing an electromagnetic atomization cigarette cartridge to implement the first and second embodiments, including:

[0049] S1: Winding an aerosol matrix substrate to form a columnar aerosol-forming matrix, or molding an aerosol matrix substrate to form a columnar aerosol-forming matrix;

[0050] S2: preparing an annular foil, and coating the annular foil onto a cylindrical aerosol-forming substrate to form a substrate segment or an assembly unit;

[0051] S3: The cigarette tube is placed on the outer side of the filter section, the cooling section, and the matrix section which are coaxially connected in the longitudinal direction in sequence to form a columnar cigarette bomb.

[0052] Among them, the winding aerosol matrix substrate to form a columnar smoke-forming substrate also includes that the substrate to be wound is ordered tobacco shreds or disordered tobacco shreds.

[0053] Among them, the molded aerosol matrix substrate forms a columnar smoke-forming matrix and also includes that the substrate to be molded is herbal powder or herbal paste.

[0054] The method also includes: S21: preparing a foil from a ferromagnetic metal through smelting, forging, hot rolling, cold rolling and annealing processes.

[0055] The method further includes: S22: physically processing the annular foil and the backing paper to form a composite annular foil. The ferromagnetic metal foil and the backing paper are combined through a pressing and bonding process to form a composite foil. The annular foil is a sheet formed by cutting a long strip, specifically, a roll of a long strip of coiled material is cut into a preset size by an automated device for standby use.

[0056] The method further comprises: S23: wrapping the annular foil onto the columnar smoke-forming substrate to form a long strip, and cutting to form a substrate segment. The composite foil is wrapped onto the aerosol substrate by parallel flat rolling and bonding process to form a smoke-generating body strip, and the smoke-generating body unit, i.e., the substrate segment, is obtained after cutting. The circumferential wrapping area of ​​the annular foil should not be less than 70% of the side area of ​​the columnar substrate segment, and preferably should not be less than 85%.

[0057] It also includes S31: using parallel flat rolling and bonding technology to wrap low-weight paper to form a thin-walled cigarette pipe; or using oblique rolling and bonding technology to roll high-weight paper to form a hollow thick-walled cigarette pipe.

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

[0059] Compared with the traditional method of indirectly heating the aerosol matrix by using circumferentially arranged heating elements in the smoking device, the structural design of the present invention circumferentially arranges annular foil heating receptors inside the cigarette cartridge, thereby realizing rapid and direct "internal" circumferential electromagnetic induction heating.

[0060] Embodiment 4

[0061] In order to further verify the feasibility of the internal circumferential electromagnetic heating mode of the present invention, the coupling effect was simulated using COMSOL Multiphysics software, and the magnetic field distribution results are shown in Figure 2. Figure 5 and Figure 6 shown.

[0062] In a simulation model setting, the electromagnetic atomizer cartridge is inserted into the cartridge compartment in the 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 outer diameter of the cartridge is 7 mm and the height is 42 mm; the thickness of the annular foil heating receptor is 0.02 mm, the outer diameter is 6.8 mm, the height is 12 mm, and the relative magnetic permeability is 5,000; the longitudinal center of the annular foil heating receptor corresponds to the longitudinal center of the solenoid.

[0063] Figure 5 The figure shows the distribution of magnetic flux in the electromagnetic induction heating module in this embodiment (the cigarette cartridge and the annular thin foil heating sensor are not taken into account here). It can be seen that the area with high magnetic field intensity is concentrated in the inner space of the solenoid. When the cigarette cartridge containing the annular foil heating sensor is inserted into the solenoid for heating, a strong magnetic flux also appears in the heating sensor, and the distribution is relatively uniform to a certain extent, such as Figure 6 As shown (solenoid is not shown here). Figure 5 and Figure 6 It can be found that the circumferentially distributed annular foil heating receptors in the present invention are very close to the inner side of the coil, and can form a strong electromagnetic induction coupling, indicating that the application possibility of the electromagnetic atomization cartridge with internal circumferential heating is relatively high.

[0064] Embodiment 5

[0065] The difference from the above-mentioned embodiment is that the metal foil and the graphite paper are compounded together to form the heating foil. The excellent thermal conductivity and heat insulation properties of the graphite paper are utilized to achieve efficient and uniform heating, and effectively prevent the external smoke pipe from burning, thereby improving the user experience.

[0066] The carbon content of the graphite paper exceeds 90wt%, preferably 95wt% or more, to ensure its excellent thermal conductivity. The thickness of the graphite paper is between 0.02-0.1mm, preferably 0.03-0.06mm, to take into account thermal conductivity, thermal insulation and mechanical strength. The thickness of the magnetic metal foil is between 0.003-0.03mm, preferably 0.005-0.02mm, to ensure good induction heating effect and flexibility.

[0067] Due to the orientation of graphite paper grains, the thermal conductivity of graphite paper in the horizontal and vertical directions is very different, that is, it has anisotropy. After controlling the degree of grain orientation, its thermal conductivity in the plane can reach a maximum of 1500W / mK, while the thermal conductivity in the vertical direction is generally in the range of 5-20W / mK. The low thermal conductivity of graphite paper in the vertical direction can effectively limit the heat around the aerosol matrix, reduce the circumferential transfer of heat to the external smoke pipe, thereby preventing the external smoke pipe from burning and improving the heat utilization efficiency. The main heat conduction direction of the heating mode in this application is from the circumferential (radial) direction to the internal aerosol matrix for heat transfer. At the same time, the high thermal conductivity of graphite paper in the horizontal direction is conducive to the rapid and uniform transfer of heat between the metal foil and the aerosol matrix in the axial direction of the smoke bomb, improving the heating efficiency and ensuring the uniformity of the atomization effect.

[0068] In addition, graphite paper has a good sealing effect, which can prevent or slow down the leakage or escape of liquid components and flavors in the aerosol matrix during storage. During the suction process, it also prevents the possibility of chaotic circumferential airflow. In addition, graphite paper also plays a certain mechanical support role. In general, ① the thermal insulation properties of graphite paper effectively reduce heat loss, concentrate heat in the aerosol matrix, significantly improve heat utilization, and extend the endurance of a single use, that is, improve heat utilization; ② The thermal insulation effect of graphite paper can effectively prevent the external smoke pipe from being burned by heat, avoid the production of unpleasant odors, and ensure the pure taste of the aerosol, that is, prevent burning; ③ The horizontal high thermal conductivity of graphite paper enables heat to be quickly and evenly transferred to the aerosol matrix, thereby achieving uniform atomization and providing a better taste experience, that is, uniform atomization; ④ Graphite paper has a certain airtightness, which can prevent the leakage of volatile components in the aerosol matrix, maintain product quality, and extend the shelf life, that is, good sealing; ⑤ Graphite paper has a certain mechanical strength, which can provide support for the aerosol matrix, keep the shape of the cigarette cartridge stable, and facilitate production, transportation and use.

[0069] refer to Figure 7 , which is a cigarette cartridge suitable for particle or paste aerosol matrix. Figure 8 , which is a cigarette cartridge suitable for a strip aerosol matrix. The heating sensor is a metal foil 102, which is compounded with a graphite paper 103 and wrapped around the periphery of the aerosol matrix 101 to form a magnetic smoke body; it also includes a slender columnar external smoke tube 4 and a plug at the end (suitable for granular or paste-like heating matrix) to form an electromagnetic atomization cigarette cartridge. The metal foil 102 can be composed of various configurations and materials as in the above-mentioned embodiments.

[0070] A cigarette cartridge suitable for a 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 oxidative intercalation, high temperature expansion, and then rolled into graphite paper of specific thickness and specifications.

[0072] S2: Preparation of magnetic composite paper: Compounding the prepared graphite paper and magnetic metal foil together by calendering, bonding, etc. to form magnetic composite paper. The bonding may be performed by hot pressing, adhesive bonding, etc.

[0073] S3: Preparation of magnetic tubular structure: Winding and bonding the magnetic composite paper into a tube, and cutting into required magnetic small segments.

[0074] S4: Assembly: Install the small magnetic plug into the external smoke pipe and fix it.

[0075] S5: Filling aerosol matrix: Fill the filter segment, cooling segment, granular or paste aerosol matrix, and plug in the nested tube structure to form a slender columnar electromagnetic atomization cartridge. Among them, the magnetic tube segment and the aerosol matrix form a magnetic smoke body.

[0076] A cigarette cartridge suitable for a 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: preparing magnetic composite paper: compounding the prepared graphite paper and magnetic metal foil together by calendering, bonding, etc. to form magnetic composite paper.

[0079] S3: preparing a magnetic smoke body: winding and bonding the magnetic composite paper to the periphery of the continuous block aerosol matrix, and cutting it into small sections to form a magnetic smoke body.

[0080] S4: Winding and forming: The filter segment, the cooling segment, the magnetic smoke-generating body, and the plugging segment are coaxially wound and bonded with cigarette paper to form a slender cylindrical electromagnetic atomization cartridge.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0082] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electromagnetic atomizing cigarette cartridge that performs circumferential heating from the inside of the cigarette cartridge, characterized in that: It includes a filter section, a cooling section, and a matrix section which are coaxially connected in the longitudinal direction, wherein an arc-shaped heating foil containing ferromagnetism or ferrimagnetism is wound around the outer side of the matrix section; and it also includes a hollow cigarette tube which is sleeved on the outer side of the filter section, the cooling section, and the matrix section to form a columnar cigarette bomb.

2. The electromagnetic atomization cartridge for circumferential heating from the inside of the cartridge according to claim 1, characterized in that: The heating foil is a ferromagnetic metal foil, or a composite foil formed by combining a ferromagnetic metal foil with a backing paper.

3. The electromagnetic atomization cartridge for circumferential heating from the inside of the cartridge according to claim 2, characterized in that: The backing paper is Sydney paper, and the strong magnetic metal foil is physically tightly combined with the Sydney paper through an adhesive.

4. The electromagnetic atomization cartridge for circumferential heating from the inside of the cartridge according to claim 2, characterized in that: The thickness of the ferromagnetic metal foil is 0.003-0.03 mm.

5. The electromagnetic atomization cartridge for circumferential heating from the inside of the cartridge according to claim 2, characterized in that: The backing paper is graphite paper, and the thickness of the graphite paper is 0.02-0.1 mm.

6. The electromagnetic atomization cartridge for circumferential heating from the inside of the cartridge according to claim 2, characterized in that: The ferromagnetic metal foil is a single alloy or a single metal material and is configured as a single-layer structure.

7. The electromagnetic atomization cartridge for circumferential heating from the inside of the cartridge according to claim 2, characterized in that: The ferromagnetic metal foil is a composite metal material containing two or more metals and is configured as a multi-layer structure.

8. The electromagnetic atomization cartridge for circumferential heating from the inside of 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 atomization cartridge for circumferential heating from the inside of the cartridge according to claim 1, characterized in that: The heating foil is configured as a multi-segment arc, and the composite equivalent center angle thereof ranges from 120° to 360°.

10. The electromagnetic atomization cartridge for circumferential heating from the inside of the cartridge according to claim 1, characterized in that: The heating foil is in a ring shape formed by cutting a long strip into a sheet shape and winding it.

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