Electromagnetic atomization cigarette cartridge and manufacturing method thereof

Abstract

The electromagnetic atomization cigarette cartridge provided by the present invention includes a hollow cigarette tube, a filter, a positioning base, a heating receptor, a sealing member and an aerosol-forming matrix. The positioning base and the heating receptor are configured to be physically tightly connected and then inserted into the cigarette tube. The aerosol-forming matrix is ​​filled into the matrix accommodating space formed by the heating receptor and the cigarette tube, and the sealing member is arranged at the end of the cigarette tube. The receptor and the positioning base are pre-assembled and integrated and then fixed to a preset position in the cigarette tube to ensure that one end thereof is located in the central area of ​​the aerosol matrix, to ensure that the electromagnetic field generated by the receptor and the smoking device maintains a stable coupling, and does not cause unreliable problems such as looseness and skewness. At the same time, this manufacturing method is conducive to the subsequent filling of various granular aerosol matrices, the process is simple, and uniform carbonization is achieved, which can effectively avoid the generation of odor caused by direct contact between the receptor and the cigarette tube.

Description

Technical Field

[0001] The present invention relates to the field of electronic cigarette atomization, and in particular to an electromagnetic atomization cigarette cartridge and a manufacturing method thereof. Background Art

[0002] Electromagnetic atomization cartridges suitable for heat-not-burn technology form inhalable aerosols by inserting a heating receptor into the aerosol-forming matrix and heating it. The receptors are usually inserted into the aerosol-forming matrix of the cartridges, which requires the receptors to be accurately inserted into the center of the aerosol-forming matrix, and places extremely high demands on the accuracy of the online cutting and insertion equipment of the receptors. At the same time, this method has problems such as receptor deformation, insertion deviation, and loosening, skewing, and even slipping during subsequent processing and transportation.

[0003] The heating principle of electromagnetic atomization cartridges is to use the electromagnetic induction effect to make the magnetic metal material embedded in the cartridge generate eddy currents, release Joule heat, heat the aerosol matrix in the cartridge, and produce aerosol for inhalation. Therefore, in the design and application of cartridges, it is very important to accurately position the receptor to keep it in the expected strong magnetic field area. Summary of the invention

[0004] In order to solve the aforementioned problems of the prior art, the present invention provides an electromagnetic atomization cigarette cartridge, comprising a hollow cigarette tube, a filter tip, a positioning base, a heating receptor, a sealing member and an aerosol-forming matrix. The positioning base and the heating receptor are configured to be tightly physically connected and then inserted into the cigarette tube. The aerosol-forming matrix is ​​filled into the matrix accommodating space formed by the heating receptor and the cigarette tube, and the sealing member is arranged at the end of the cigarette tube.

[0005] Preferably, the positioning base of the electromagnetic atomizer smoke is provided with penetrating air holes along the direction of the smoke pipe, and the air holes are connected with the matrix accommodating space.

[0006] Preferably, the side wall of the positioning base is provided with raised ribs.

[0007] Preferably, the positioning base is concave at one end close to the matrix accommodating space.

[0008] Preferably, the positioning base is made of high temperature resistant material.

[0009] The present invention also provides a method for manufacturing the aforementioned electromagnetic atomization cigarette cartridge, comprising step 1: pre-loading one end of a heating receptor in a mold, melting a high-temperature material and solidifying it with the heating receptor to form a tight physical connection between a positioning base and the heating receptor; step 2: after demolding, inserting the positioning base and the heating receptor into a cigarette tube to form a matrix accommodating space; step 3: filling the smoke-forming matrix into the matrix accommodating space; and step 4: fixing a sealing member at the end of the cigarette tube.

[0010] Preferably, the physical connection in step 1 comprises injection molding or sintering.

[0011] Preferably, the method further comprises injecting ceramic powder or glass powder blank to achieve sintering.

[0012] Preferably, step 2 comprises interference fit assembly.

[0013] Preferably, step 2 comprises gluing assembly.

[0014] Compared with the prior art, the beneficial effects of the present invention are: by proposing a new positioning base for electromagnetic atomization cigarette cartridges, the receptor and the positioning base are pre-assembled and integrated and then fixed to a preset position in the cigarette pipe, ensuring that one end is located in the middle area of ​​the aerosol matrix, ensuring that the electromagnetic field generated by the receptor and the cigarette device maintains a stable coupling, and does not cause unreliable problems such as looseness and skewness. At the same time, this manufacturing method is conducive to the subsequent filling of various granular aerosol matrices, the process is simple, and uniform carbonization is achieved, which can effectively avoid the generation of odor caused by direct contact between the receptor and the cigarette pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the electromagnetic atomizer cartridge;

[0016] Figure 2 It is a schematic diagram of the structure of the internal components of the electromagnetic atomizer cartridge;

[0017] Figure 3 A schematic diagram of the three-dimensional structure of the positioning base;

[0018] Figure 4 It is a plan view of the assembly of the positioning base and the heating susceptor;

[0019] Figure 5 This is a schematic diagram of the test results using the DSC method;

[0020] Figure 6 Schematic diagram of the test results using the TGA method. DETAILED DESCRIPTION

[0021] 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.

[0022] Reference Figure 1 The electromagnetic atomization cigarette cartridge includes a hollow cigarette tube 1, a filter tip 12, a positioning base 110, a heating receptor 111, a sealing member 13 and an aerosol-forming matrix. The positioning base 110 and the heating receptor 111 together form an integrated heating component 11.

[0023] like Figure 1 and Figure 2 As shown, the positioning base 110 and the heating susceptor 111 are configured to be closely physically connected and then inserted into the cigarette tube 1, the heating susceptor 111 and the cigarette tube 1 form a substrate accommodating space 14, the smoke-forming substrate (such as tobacco particles 15) is filled into the substrate accommodating space 14, and the sealing member 13 is arranged at the end of the cigarette tube 1. The sealing member 13 is arranged in the form of a cylindrical septum or an isolation membrane as shown in the figure.

[0024] like Figure 3 As shown, the positioning base 110 includes a column-like whole extending longitudinally, with a plurality of recessed portions 1101 provided on the outer side, and ribs 1102 convexly provided in the recessed portions 1101 at intervals, wherein the ribs 1102 are concave or sunken on the side close to the induction heater 111 to form a smooth cut surface 1103, which is convenient for reducing friction resistance during installation, facilitating installation, and increasing the filling space of the aerosol-forming substrate. A plurality of penetrating air holes 1104 are also provided along the longitudinal extension direction of the positioning base 110 to allow airflow to pass through.

[0025] like Figure 2 and Figure 4 As shown, in one implementation of this embodiment, the positioning base 110 and the heating receptor 111 are tightly physically connected by mechanical matching to form an integrated heating assembly 11. A groove 1105 for positioning is provided at one end of the positioning base 110, and the heating receptor 111 is interference-fitted into the groove 1105. It can be understood that the positioning base 110 is made of high-temperature resistant silicone with a height of 6mm and a diameter of 7mm, and the heating receptor 111 is made of 1J85 soft magnetic alloy material with a size of 17mm long, 4mm wide and 0.12mm thick. The central axes of the two coincide, and the embedding depth is 4.5mm. The mechanical method of interference fit utilizes the elasticity of the silicone material to expand and deform the groove 1105 in the positioning base so that it fits over the heating sensor 111. When it is restored, a clamping force is generated on the heating sensor 111 to connect the two. At this time, the tolerance band is below the tolerance band of the heating sensor 111, and the difference between the size of the groove 1105 and the size of the heating sensor 111 is negative.

[0026] In another implementation of this embodiment, a gluing process is used, that is, on the basis of the aforementioned mechanical connection method, a highly viscous glue is further added to the joint of the groove 1105 and the heating sensor 111, and preferably an environmentally friendly glue that can withstand a high temperature of 400°C is used.

[0027] In another implementation of this embodiment, an injection molding process is used to provide a higher strength bond. Specifically, a specific method for manufacturing an electromagnetic atomization cigarette cartridge includes:

[0028] Step 1: pre-install one end of the heating susceptor 111 in the mold, melt the high temperature material (such as silicone) and solidify it with the heating susceptor 111 to form a positioning base 110 and then closely physically connect it with the heating susceptor 111;

[0029] Step 2: After demoulding, the positioning base 110 and the heating sensor 111 are inserted into the smoke tube 1 to form a matrix accommodating space 14;

[0030] Step 3: Filling the aerosol-forming substrate (such as tobacco particles 15) into the substrate containing space 14;

[0031] Step 4: Fix the sealing member 13 to the end of the smoke pipe 1 .

[0032] In another implementation of this embodiment, a sintering process is used to provide a higher strength bond. For example, co-firing is used, one end of the heating susceptor 111 is pre-installed in the mold, and then ceramic powder or glass powder blank is injected, followed by sintering. Sintering can be divided into solid phase sintering and liquid phase sintering, and can be divided into normal pressure sintering, hot pressing sintering, hot isostatic pressing sintering, atmosphere sintering, microwave sintering, and discharge plasma sintering according to the specific process.

[0033] In this embodiment, the positioning base 110 is used to firmly lock the heating receptor 111 in a proper position in the smoke tube 1 to suit its physical distribution in the smoke cartridge. This pre-installed integrated method achieves precise positioning and extremely high stability, surpassing the effect of the traditional smoke cartridge that only relies on the smoke-forming matrix to support the receptor.

[0034] As mentioned above, in addition to the positioning function, the positioning base 110 also has the function of an airflow channel, and the air holes 1104 arranged therein and the recessed part 1101 arranged on the side wall both play this role. It allows the smooth passage of aerosol and air to achieve a smaller suction resistance, while also preventing the leakage of the aerosol matrix. The filter 12 has micropores that allow the user to inhale the aerosol, and a cooling component (not shown in the figure) is also arranged between the filter 12 and the positioning base 110. When heated for use, the porosity of the micropores is 40-75%, and the pores facilitate the smooth penetration and emission of the aerosol.

[0035] In this embodiment, the strength of the integrated heating assembly 11 is much stronger than that of the traditional cigarette cartridge. To this end, the following experimental verification is performed, the positioning base 110 is fixed, the test instrument clamps the active end of the heating sensor 111, and stretches it in the longitudinal direction at a speed of 50 mm / s, and records its maximum tensile force. The results of the test of 10 samples are listed in Table 1.

[0036] Table 1: Test results of the bonding strength between the sensor and the positioning base

[0037]

[0038]

[0039] From the experimental results, it can be seen that the bonding strength is very high, with an average maximum tensile force of 2.27N and a maximum shear area of ​​18mm between the heating susceptor 111 and the positioning base 110. 2 The average bonding strength is calculated to be 0.126 Mpa, which can be understood as shear strength. It can be predicted that after the positioning base 110 is fixed in the smoke tube 1, in this assembly mode, the heating sensor 111 will not shake in the smoke cartridge.

[0040] In this embodiment, since the positioning base 110 is in direct contact with a heat source with a relatively high temperature, its thermal performance is also particularly important. To this end, the following experiments are conducted to verify the three groups of experiments:

[0041] (1) Differential Scanning Calorimetry (DSC). The sample is gradually heated from 25°C to 350°C and the heat change analysis results are measured, such as Figure 5 In the temperature range of 25-350℃, the curve is smooth, and no obvious endothermic or exothermic phenomenon occurs, indicating that no significant chemical reaction or phase change occurs.

[0042] (2) Thermogravimetric analysis (TGA). The sample is gradually heated from 25°C to 350°C and its weight change is measured. Figure 6 ; The curve is smooth, indicating that no significant decomposition occurs within this temperature range and there are fewer volatile substances.

[0043] (3) Accelerated storage test (TS) under high temperature conditions. The sample was placed in an oven at 350°C for 20 minutes, and the changes in its weight, shape and color were measured. The high temperature storage results showed that the positioning base material did not undergo obvious deformation and color change after the 20-minute high temperature accelerated test.

[0044] The above three experimental results show that the positioning base 110 material in this embodiment has good thermal stability and can adapt to the normal smoking of the cigarette cartridge. The risk of loosening and falling off of the heating receptor 111 during the heating process is low. More importantly, no chemical change, phase change or decomposition will occur during the entire thermal process. It contains few volatile substances and has a very low risk of toxicity.

[0045] More specifically, in order to achieve the purpose of thermal stability in this embodiment, the positioning base 110 is made of heat-resistant materials, including silicone, resin, ceramic or glass materials. These materials must be able to withstand a high temperature of 350°C for 10 minutes without significant deformation that causes the sensor to fall off, and without releasing harmful substances. In another implementation, it is also a feasible solution to configure the material of the positioning base 110 to be a temperature-resistant plant material, such as wood, bamboo, or a fiber material containing tobacco components.

[0046] Next, the assembly process of the aerosol matrix of the electromagnetic cigarette bomb is described in combination with the integrated heating component 11 of the present embodiment. First, the integrated heating component 11 is plugged into the corresponding position of the cigarette tube 1, and the heating sensor 111 and the cigarette tube 1 form a accommodating space 14, and the aerosol matrix is ​​filled from the suspended end of the sensor (the end of the cigarette tube 1), and then the sealing member 13 is arranged at the end of the cigarette tube 1 to isolate and prevent leakage. The aerosol matrix can be in one or more of granular, filamentous, sheet or other physical forms. The method of first positioning the heating sensor 111 and then filling the aerosol matrix in the present embodiment can maintain a stable structure, achieve full filling and symmetrical distribution. In contrast, the traditional method of first filling and then inserting the sensor is prone to deformation and displacement of the particles due to extrusion. The positioning base 110 plays at least three roles, including fixing the heating sensor 111, limiting the leakage of the aerosol matrix and cooling the aerosol flowing through.

[0047] In another assembly method, different from Figure 1 As shown, the integrated heating assembly 11 is inverted in the cigarette tube 1, that is, the positioning base 110 is located at the end of the cigarette tube 1 for blocking, and the aerosol matrix should be filled from the filter tip 12. However, the effect produced is similar to the above embodiment, and will not be repeated here.

[0048] The smoke-forming matrix includes tobacco particles containing nicotine, such as tobacco raw materials or tobacco extracts, wherein the tobacco raw materials or tobacco extracts are mixed with one or a combination of two or more of herbal spices and Chinese herbal medicine raw materials. When mixed with herbal spices or Chinese herbal medicine raw materials, the tobacco raw materials are first ground into powder, and then the tobacco raw material powder is mixed into the herbal spices or Chinese herbal medicine raw materials and ground into powder for mixing. Or nicotine-free spice products, such as raw materials containing one or a combination of two or more of herbal spices or Chinese herbal medicine raw materials, wherein the herbal spices are preferably tea leaves, lotus leaves, mint, licorice, cloves, dried lemons, dried oranges, chrysanthemums, star anise, osmanthus, mulberry leaves, bay leaves, perilla, yellow oranges, angelica, tsaoko, tangerine peel, gynostemma pentaphyllum, lavender, hawthorn, rose, jasmine, honeysuckle, buckwheat tea, roselle, lily, angelica sinensis, nard, chicken bone grass, costus root, sandalwood, agarwood, The invention can be a mixture of one or two or more of: coffee, blueberry, strawberry; the Chinese herbal medicine raw materials can be a mixture of one or two or more of: raw rehmannia, cooked rehmannia, angelica, cassia seed, dandelion, apocynum venetum, jujube, wolfberry, fritillaria cirrhosa, notoginseng, sterculia lychnophora, borneol, menthol, saffron, tuckahoe, kudzu root, dalbergia odorifera, lindera officinalis, perilla leaf, bupleurum, isatis root, astragalus, selfheal, ginseng, white peony root, gastrodia elata, schisandra chinensis; the smoking raw materials are mixed by grinding into powder.

[0049] 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.

[0050] 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 atomization cigarette cartridge, comprising a hollow cigarette tube, a filter tip, a heating sensor, a sealing member and an aerosol-forming matrix, characterized in that: It also includes a positioning base, which is configured to be tightly physically connected with the heating receptor and then inserted into the smoke tube. The smoke-forming substrate is filled into the substrate accommodating space formed by the heating receptor and the smoke tube, and the sealing member is arranged at the end of the smoke tube.

2. The electromagnetic atomization cartridge according to claim 1, characterized in that: The positioning base is provided with penetrating air holes along the direction of the smoke pipe, and the air holes are connected with the matrix accommodating space.

3. The electromagnetic atomization cartridge according to claim 2, characterized in that: The side wall of the positioning base is provided with raised ribs.

4. The electromagnetic atomization cartridge according to claim 3, characterized in that: The positioning base is concave at one end close to the matrix accommodating space.

5. The electromagnetic atomization cartridge according to claim 4, characterized in that: The positioning base is made of high temperature resistant material.

6. A method for manufacturing the electromagnetic atomization cartridge according to any one of claims 1 to 5, characterized in that: include, Step 1: Tightly physically connect the positioning base to the heating sensor; Step 2: After demoulding, insert the positioning base and the heating sensor into the smoke tube to form a matrix accommodating space; Step 3: Filling the aerosol-forming substrate into the substrate containing space; Step 4: Fix the sealing piece at the end of the smoke pipe.

7. The method for manufacturing the electromagnetic atomization cigarette cartridge according to claim 6, characterized in that: The physical connection of step 1 includes injection molding or sintering.

8. The method for manufacturing the electromagnetic atomization cigarette cartridge according to claim 7, characterized in that: It also includes injecting ceramic powder or glass powder blanks to achieve sintering.

9. The method for manufacturing the electromagnetic atomization cigarette cartridge according to claim 6, characterized in that: Step 2 involves interference fit assembly.

10. The method for manufacturing the electromagnetic atomization cigarette cartridge according to claim 6, characterized in that: Step 2 involves gluing the assembly.

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