A heating element, an aerosol product, and an aerosol system

Abstract

This invention discloses a heating element, an aerosol product, and an aerosol system, relating to the field of tobacco product technology. The heating element is disposed within the outer shell of the aerosol product and includes a first electrode segment, a heating segment, and a second electrode segment arranged sequentially along the axial direction of the heating element. Both the first and second electrode segments are bent and used to connect to a power supply structure. The heating segment is spirally wound and its two ends are respectively connected to the first and second electrode segments. The inner cavity of the heating segment is a first aerosol forming matrix cavity, and the outer periphery of the heating segment forms a second aerosol forming matrix cavity between itself and the inner wall of the outer shell. The heating segment of the heating element is located between the inner and outer cavities of the aerosol matrix, and is relatively close to both the center and the outer periphery of the aerosol matrix in the radial direction. Heat can be transferred to all parts of the aerosol matrix more quickly and evenly in the radial direction, so that the aerosol matrix in the inner and outer cavities is uniformly heated, improving the utilization rate of the aerosol matrix.

Description

Technical Field

[0001] This invention relates to the field of tobacco product technology, and more specifically, to a heating element. Furthermore, this invention also relates to an aerosol product and aerosol system comprising the aforementioned heating element. Background Technology

[0002] Currently, heated cigarettes made from heated tobacco materials release aerosols through electric heating, achieving a smoking experience close to that of traditional cigarettes.

[0003] In related technologies, heating is achieved by inserting a heating needle into the center of the aerosol product and surrounding it with a heating tube. However, in this method, the heat generated by the heating element is not evenly distributed within the aerosol forming matrix, resulting in uneven heating and affecting its utilization rate.

[0004] In summary, ensuring the uniform heating of the aerosol formation matrix is ​​a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a heating element that ensures uniform heating of the aerosol forming matrix. Another object of the present invention is to provide an aerosol product and an aerosol system comprising the above-described heating element.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A heating element is disposed within the outer shell of an aerosol product, comprising a first electrode segment, a heating segment, and a second electrode segment arranged sequentially along the axial direction of the heating element. Both the first electrode segment and the second electrode segment are bent and used to connect to a power supply structure. The heating segment is spirally wound and its two ends are respectively connected to the first electrode segment and the second electrode segment. The inner cavity of the heating segment is a first aerosol forming matrix cavity, and the outer periphery of the heating segment is used to form a second aerosol forming matrix cavity between itself and the inner wall of the outer shell.

[0007] Preferably, in a cross-section perpendicular to the central axis of the heating element, the cross-sectional area of ​​either the first electrode segment or the second electrode segment is greater than the cross-sectional area of ​​the heating segment.

[0008] Preferably, the heating section includes multiple interconnected spiral sections, and the axial dimension of each spiral section is smaller than the axial dimensions of the first electrode section and the second electrode section.

[0009] Preferably, the first electrode segment, the second electrode segment, and the heating segment are integrally formed.

[0010] Preferably, the inner diameter of the heating section is r, then: ; Where b is the thickness of the heating section and R0 is the inner diameter of the outer shell.

[0011] The present invention also provides an aerosol product, comprising: The heating element is any one of the heating elements described above; The housing contains the heating element, and the housing has an axial opening corresponding to the first electrode segment and the second electrode segment, with at least a portion of the first electrode segment and the second electrode segment exposed through the opening.

[0012] Preferably, the outer periphery dimension of either the first electrode segment or the second electrode segment is greater than or equal to the inner cavity dimension of the outer shell; The distance between each circumferential position of the heating element and the inner wall of the outer casing is equal.

[0013] Preferably, both the first electrode segment and the second electrode segment are bent to form an inner cavity, which is filled with a breathable and high-temperature resistant structure, which includes any one of an aerosol forming matrix, cellulose acetate bundles, polylactic acid bundles, and polyimide bundles.

[0014] Preferably, the housing further includes a plug portion and a filter portion, wherein the plug portion is located on the side of the second electrode segment away from the heating segment, and the filter portion is located on the side of the first electrode segment away from the heating segment; The plug portion includes any one of cellulose acetate bundles, polylactic acid bundles, polyimide bundles, or breathable sheets.

[0015] Preferably, the filter portion includes at least one of cellulose acetate bundles, polylactic acid bundles, polyimide bundles, hollow paper tubes, and porous silicone structures.

[0016] Preferably, the filter section further includes a hollow paper tube, and any one of the cellulose acetate bundle, the polylactic acid bundle, and the polyimide bundle is located between the first electrode segment and the hollow paper tube; Alternatively, the hollow paper tube is located between any one of the cellulose acetate bundle, the polylactic acid bundle, the polyimide bundle, and the porous silicone structure, and the porous silicone structure is positioned close to the first electrode segment.

[0017] The present invention also provides an aerosol system, comprising: The housing assembly has an air inlet and a cigarette insert along its axial direction; A cavity assembly is disposed within the housing assembly, with its axial ends respectively corresponding to the air inlet and the cigarette insertion port; The aerosol product is any one of the aerosol products described above, and the aerosol product is installed inside the cavity assembly; An elastic conductive element is disposed within the cavity assembly and corresponding to the opening of the outer shell; two elastic conductive elements are respectively electrically connected to the first electrode segment and the second electrode segment. A power supply structure is provided on one side of the cavity assembly and electrically connected to the elastic conductive element.

[0018] Preferably, the elastic conductive element includes a plurality of electrical contacts arranged circumferentially thereon, and the distance between any two adjacent electrical contacts along the outer circumferential direction is smaller than the size of the opening.

[0019] Preferably, a monitoring element is installed on the outside of the cavity assembly. The monitoring element is used to obtain the temperature of the aerosol product in order to adjust the output power of the power supply structure.

[0020] The heating element provided by this invention includes a first electrode segment, a second electrode segment, and a heating segment arranged sequentially along its axial direction. The heating segment is spirally wound and its two ends are respectively connected to the first electrode segment and the second electrode segment. Both the first electrode segment and the second electrode segment are used for electrical connection to an external power supply structure. The inner cavity of the heating segment forms a first aerosol forming matrix cavity, and the outer periphery of the heating segment is used to form a second aerosol forming matrix cavity between itself and the inner wall of the outer shell. Based on this arrangement, the aerosol forming matrix can be divided into an inner cavity portion located inside the heating segment and an outer cavity portion located outside the heating segment. During heating, the inner cavity portion and the outer cavity portion are heated simultaneously. Therefore, heat can be quickly and evenly transferred to all parts, ensuring the uniformity of heating of the aerosol forming matrix and improving the utilization rate of the aerosol forming matrix.

[0021] The beneficial effects of the present invention are as follows: by using the form of a spirally wound heating section, the heat generated by the heating element can be transferred to all parts of the aerosol forming matrix more quickly and evenly in the radial direction, ensuring uniform and rapid heating, and the setting of the first electrode section and the second electrode section at both ends meets the requirements for connecting to an external power supply structure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the heating element provided by the present invention; Figure 2This is a top view of the heating element provided by the present invention; Figure 3 This is an enlarged schematic diagram of the second electrode segment provided by the present invention; Figure 4 This is a schematic diagram of the processing of the heating element provided by the present invention; Figure 5 This is a schematic diagram illustrating the heating element provided by the present invention; Figure 6 This is a schematic diagram showing the dimensions of the outer casing provided by the present invention; Figure 7 This is a schematic diagram showing the placement of the elastic conductive element provided by the present invention; Figure 8 for Figure 7 A sectional view; Figure 9 This is a schematic diagram of the structure of the aerosol product provided by the present invention; Figure 10 This is a schematic diagram of the structure of the filter section provided by the present invention; Figure 11 This is another structural schematic diagram of the filter section provided by the present invention; Figure 12 This is another structural schematic diagram of the filter section provided by the present invention; Figure 13 This is a schematic diagram of the assembly of the outer casing and the heating element provided by the present invention; Figure 14 This is a schematic diagram showing the location of the opening provided by the present invention; Figure 15 This is a schematic diagram of the airflow direction of the aerosol product provided by the present invention; Figure 16 A schematic diagram of an aerosol product provided by the present invention; Figure 17 This is a schematic diagram of another aerosol product provided by the present invention; Figure 18 A schematic diagram of yet another aerosol product provided by the present invention; Figure 19 for Figure 18 A schematic diagram illustrating the assembly of an aerosol product; Figure 20 for Figure 19 Cross-sectional view of the assembled aerosol product; Figure 21 This is a schematic diagram of the aerosol system provided by the present invention; Figure 22 This is a cross-sectional view of the aerosol system provided by the present invention; Figure 23 This is a schematic diagram of the heating element provided by the present invention installed in an aerosol system; Figure 24 This is a schematic diagram of the cavity assembly provided by the present invention; Figure 25 This is an exploded view of the aerosol system provided by the present invention.

[0024] Figures 1-25 In the accompanying drawings, the reference numerals include: 100 - Heating element; 110 - First electrode segment; 120 - Heating segment; 121 - Spiral segment; 130 - Second electrode segment; 200 - Aerosol product; 210 - Outer shell; 211 - Opening; 220 - Elastic conductive component; 230 - First aerosol forming matrix cavity; 240 - Second aerosol forming matrix cavity; 250 - Plug portion; 260 - Filter portion; 270 - Aerosol forming matrix; 261 - Filament segment; 262 - Hollow paper tube; 263 - Porous silicone structure; 310 - Housing assembly; 311 - Housing; 312 - Top cover; 313 - Bottom cover; 314 - Air inlet; 315 - Cigarette insertion port; 320 - Cavity assembly; 321 - Cigarette holder; 322 - Upper cigarette holder; 323 - Cigarette base; 330 - Power supply structure; 331 - Mainboard; 332 - Battery holder; 333 - Battery cell; 340 - Sealing ring; 350 - Button. Detailed Implementation

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

[0026] The core of this invention is to provide a heating element that enables more uniform heating of the aerosol forming matrix. Another core aspect of this invention is to provide an aerosol product including the aforementioned heating element, and an aerosol system including the aforementioned aerosol product.

[0027] Please refer to Figure 1 The heating element 100 provided by the present invention is disposed inside the outer shell 210 of the aerosol product 200, and includes a first electrode segment 110, a heating segment 120 and a second electrode segment 130 arranged sequentially along the axial direction of the heating element 100.

[0028] The first electrode segment 110 and the second electrode segment 130 are both bent and used to connect to the power supply structure 330. The heating segment 120 is spirally wound and its two ends are respectively connected to the first electrode segment 110 and the second electrode segment 130. The inner cavity of the heating segment 120 forms a first aerosol forming matrix cavity 230, and the outer periphery of the heating segment 120 is used to form a second aerosol forming matrix cavity 240 between itself and the inner wall of the outer shell 210.

[0029] With this configuration, the first electrode segment 110 and the second electrode segment 130 are distributed at both ends of the axial direction of the heating segment 120, which can be regarded as two pins of the heating segment 120 for electrical connection with the external power supply structure 330; the heating segment 120 is used to contact the aerosol forming matrix 270 for heat exchange.

[0030] Due to the spiral winding shape of the heating section 120, the aerosol forming matrix 270 can be divided into an inner cavity portion located inside the heating section 120 and an outer cavity portion located outside the heating section 120. During heating, the aerosol forming matrix 270 in both the inner and outer cavities is heated simultaneously. In other words, the aerosol forming matrix 270 in the first aerosol forming matrix cavity 230 and the second aerosol forming matrix cavity 240 is heated simultaneously. Compared to the heating element being located at the center or periphery of the cavity, the heating section 120 is closer to both the center and periphery of the aerosol forming matrix 270 in the radial direction. Heat can be transferred to all parts of the aerosol forming matrix 270 more quickly and evenly in the radial direction, so that the aerosol forming matrix 270 in both the inner and outer cavities is heated evenly, thereby improving the utilization rate of the aerosol forming matrix 270.

[0031] In this embodiment, the aerosol forming matrix 270 filled in the first aerosol forming matrix cavity 230 and the second aerosol forming matrix cavity 240 is preferably a particulate aerosol forming matrix 270 with a certain degree of fluidity, so as to fill the inner and outer sides of the heating section 120 evenly and densely, and ensure the uniformity of the aerosol forming matrix 270 on the inner and outer sides during heating.

[0032] Furthermore, for the filling of the aerosol forming matrix 270, a vibration filling process is preferred to make the packing density of the aerosol forming matrix 270 in the inner and outer cavities more consistent. This ensures that the thermal conductivity of the aerosol forming matrix 270 in contact with the heating section 120 when it transfers heat to the inner and outer sides is basically symmetrical. This is beneficial for the inner and outer aerosol forming matrix 270 to be heated to the same temperature in the same time, further improving the uniformity of heating of the aerosol forming matrix 270.

[0033] In this embodiment, the first electrode segment 110 and the second electrode segment 130 can be bent into a full circle or a complete half circle, or can be flexibly set according to the actual situation without too many restrictions.

[0034] like Figure 8The outer contour of either the first electrode segment 110 or the second electrode segment 130 matches the outer contour of the aerosol product 200. The first electrode segment 110 and the second electrode segment 130 are bent and wrapped around the entire circumference. The interface of the wrapping part is movable and can be adjusted under the action of external force to change the size of the contact area, so that the cross-sectional area of ​​the first electrode segment 110 and the second electrode segment 130 changes, which facilitates assembly.

[0035] In this embodiment, the spiral winding of the heating section 120 specifically refers to the heating section 120 forming a spiral structure. The spiral structure divides the cavity containing the aerosol forming matrix 270 into a first aerosol forming matrix cavity 230 and a second aerosol forming matrix cavity 240, so that the heat generated by the heating element can be transferred to all parts of the aerosol forming matrix 270 more quickly and evenly in the radial direction, so that the aerosol forming matrix 270 in the inner and outer cavities is heated evenly, thereby improving the utilization rate of the aerosol forming matrix 270.

[0036] Based on the above embodiments, please refer to Figure 1 , Figure 2 On a cross section perpendicular to the central axis of the heating element 100, the cross-sectional area of ​​either the first electrode segment 110 or the second electrode segment 130 is greater than the cross-sectional area of ​​the heating segment 120.

[0037] The first electrode segment 110 and the second electrode segment 130 have a large cross-sectional area and low resistance, resulting in low or even no heat generation. They mainly serve to connect to the power supply structure 330 and support and fix the heating element 100. The heating segment 120 has a small cross-sectional area and high resistance, and the heat is concentrated in the axial region where the heating segment 120 is located, making the heat generation concentrated and the temperature distribution controllable, thus avoiding excessively high temperatures at both ends of the aerosol formation matrix 270 along the axial direction.

[0038] Alternatively, the region corresponding to the heating segment 120 is the high-temperature region S1, and the regions corresponding to the first electrode segment 110 and the second electrode segment 130 are the low-temperature region S2. Please refer to the following for details. Figure 15 .

[0039] In this embodiment, the cross-sectional area of ​​the heating segment 120 is the cross-sectional area limited by its outer periphery, and the cross-sectional areas of the first electrode segment 110 and the second electrode segment 130 are the cross-sectional areas limited by their corresponding outer periphery.

[0040] Based on any of the above embodiments, please refer to Figure 5 The heating section 120 includes multiple interconnected spiral sections 121, and the axial dimension of each spiral section 121 is smaller than the axial dimension of the first electrode section 110 and the second electrode section 130.

[0041] The multiple spiral segments 121 are densely connected along the axial direction, so that the heating segment 120 forms a continuous and uniform heating area in the axial direction, and the aerosol forming matrix 270 is heated relatively evenly in all parts along the axial direction. The axial dimension of each individual spiral segment 121 is smaller than the axial dimension of the first electrode segment 110 and the second electrode segment 130, which further ensures that the heating segment 120 has a relatively high resistance per unit length, and the heat is concentrated in the heating segment 120, while the first electrode segment 110 and the second electrode segment 130 are relatively low temperature.

[0042] like Figure 5 The axial dimension of a single spiral segment 121 is a, and the axial dimensions of the first electrode segment 110 and the second electrode segment 130 are c. Since a < c, the resistance of the electrode segment is much smaller than that of the heating segment 120, resulting in less or no heat generation in the electrode segment. This avoids excessively high temperatures at both ends of the aerosol forming matrix 270, allowing components such as the filter nozzle connected to it to be kept at a relatively low temperature to prevent decomposition. On the other hand, controlling the temperature of the electrode segment ensures that the elastic conductive component corresponding to the aerosol product is kept at a suitable operating temperature, and the elasticity of the elastic conductive component is maintained within the normal range, thereby ensuring reliable contact between the elastic conductive component and the electrode segment.

[0043] In one embodiment, a is between 0.5 and 3 mm, and the pitch formed between two adjacent helical segments 121 is between 0.5 and 3 mm. The thickness b of the heating element is between 0.1 and 1.0 mm.

[0044] Based on any of the above embodiments, please refer to Figure 2 The first electrode segment 110, the second electrode segment 130, and the heating segment 120 are integrally formed.

[0045] like Figure 4 The specific processing method is as follows: first, the sheet is processed into a basic sheet with a predetermined shape by etching, stamping and other methods, and then the basic sheet is bent at a designated part according to a preset rule, so as to obtain a heating element 100 with a clear shape distinction between the heating section 120 and the electrode section.

[0046] By adopting an integral molding method, no additional connection or welding process is required between the heating section 120 and the electrode section, which reduces the contact resistance and breakage risk at the connection point and improves the overall reliability and consistency of the heating element 100.

[0047] Preferably, the heating element 100 can be made of materials such as iron-chromium-aluminum, stainless steel, or nickel-chromium alloy.

[0048] Based on any of the above embodiments, when the cross-section of the aerosol product is circular, the heating section 120 is in a spiral wound state, wherein the center of the spiral is consistent with the center of the aerosol product. To further improve the uniform heating of the aerosol forming matrix 270 on both the inner and outer sides of the heating section, so that the inner and outer aerosol forming matrix 270 can be heated to the same temperature at the same time, thereby improving the overall user experience of the aerosol product, the inner diameter r of the heating section 120 has a preferred value, and the calculation process is as follows: When the inner and outer aerosol-forming matrices are heated by ΔT at the same time, let the heat absorbed by the inner aerosol-forming matrix be Qin, and the heat absorbed by the outer aerosol-forming matrix be Q. out The heat lost by the outer aerosol matrix to the external environment is Q. loss We have the following equation: ; Where h is the axial length of the heating section 120, R0 is the inner diameter of the outer shell 210, and ρ t For the density of the aerosol forming matrix 270, c t For the specific heat capacity of the aerosol forming matrix 270, r h r is the outer radius of the spiral of the heating section 120. h =r+b. Please refer to this. Figure 5 , Figure 6 .

[0049] Let K be the ratio of the combined thermal conductivity of the heating element's heating section to the inner and outer sides of the aerosol-forming matrix, expressed as follows: ; Among them, h in h is the combined thermal conductivity of the heating section 120 and the aerosol forming matrix 270 inside the heating section 120; out The combined thermal conductivity of the heating section 120 and the aerosol matrix 270 outside the heating section 120 is given.

[0050] For traditional heated tobacco products, the heating element needs to be inserted into the pre-rolled aerosol forming matrix 270. This causes the aerosol forming matrix 270 to be subjected to radial force, resulting in changes in its bulk density and thus affecting its thermal conductivity. In this solution, the heating element and the outer shell of the aerosol product are molded before being filled with the aerosol forming matrix 270. During use, the force between the aerosol forming matrix 270 and the heating element remains stable, the radial density of the aerosol forming matrix 270 is uniform, and the contact pressure is symmetrical. Therefore, the thermal conductivity of the inner and outer sides of the aerosol forming matrix 270 can be considered to be basically the same. Thus, the K value is only related to the filling process of the aerosol forming matrix 270. When vibration filling is used, K can be taken as 0.9~1.0.

[0051] Furthermore, since the contact area between the inner and outer aerosol forming matrix 270 and the heating element is the same, and the amount of heat emitted by the heating section of the heating element to the inner and outer sides is the same, the ratio of the heat absorbed by the inner and outer aerosol forming matrix 270 is equal to the ratio of the thermal conductivity of the inner and outer aerosol forming matrix 270, that is: ; We can obtain: ; make: ; When K=1, we can obtain: ; Specifically, when the insulation within the cavity containing the aerosol product is good, the heat loss from the aerosol product to the outside can be ignored, i.e., Q loss When = 0, we have: .

[0052] The obtained r value is the recommended value for the spiral-wound heating section of aerosol products with a circular cross-section. The calculated value can be used for targeted simulation and adjustment to further optimize the actual heating performance.

[0053] Based on any of the above embodiments, please refer to Figure 7 , Figure 8 , Figure 9 The present invention also provides an aerosol article 200, including the heating element 100 provided in any of the above embodiments, and also including a shell 210.

[0054] The heating element 100 is located inside the outer casing 210. Please refer to [reference needed]. Figure 14 The housing 210 has an opening 211 in the axial direction corresponding to the first electrode segment 110 and the second electrode segment 130, and the first electrode segment 110 and the second electrode segment 130 have at least a portion of their positions exposed in the opening 211.

[0055] Both the first electrode segment 110 and the second electrode segment 130 are exposed outside the housing 210, facilitating the establishment of an electrical connection between the elastic conductive element 220 and the housing 210 from the side. The size of the specific opening 211 can be flexibly set according to the actual situation without specific limitations. One, two, or more openings 211 can be set for each electrode segment without limitation.

[0056] In this embodiment, please refer to Figure 13The outer casing 210 can be paper. The heating element 100 is placed on a flat piece of paper, and then the paper is bent to a predetermined size to obtain a certain cross-sectional shape. The ends of the paper are then glued together so that the heating element 100 can be reliably fixed in the formed paper-shaped outer casing. At least a portion of each electrode segment is exposed through an opening in the paper. Then, the aerosol forming matrix 270 is filled into the outer casing 210.

[0057] Preferably, the paper is selected with a basis weight greater than 150 g / m². 2 The thickness is greater than 0.2 mm, which ensures that when the heating element 100 is installed inside, the shape of the aerosol product will not deviate significantly due to the interference between the electrode section of the heating element 100 and the paper. At the same time, since the opening 211 needs to be provided on the outer shell of the aerosol product, its thicker size and better strength can effectively avoid the risk of breakage when the aerosol product is inserted or removed.

[0058] Based on any of the above embodiments, the outer peripheral dimensions of either the first electrode segment 110 or the second electrode segment 130 are greater than or equal to the inner cavity dimensions of the outer shell 210; the distances between the heating segment 120 and the inner wall of the outer shell 210 at each circumferential position are equal.

[0059] The outer circumferential dimension of the electrode segment is greater than or equal to the inner cavity dimension of the outer shell 210, so that the electrode segment can be interference-fitted or tightly fitted with the inner wall of the outer shell 210 after being installed, thereby reliably fixing the heating element 100 inside the outer shell 210.

[0060] In one embodiment, the outer contour dimension of the electrode segment of the heating element 100 can be larger than the inner cavity dimension of the aerosol product shell 210. Since the movable interface of the electrode segment has a certain elastic deformation space, during assembly, under radial external force, the electrode segment will bend further inward and the outer contour will be further reduced, so that the heating element can be easily assembled into the designated position. Then, when the external force is removed, the electrode segment will expand outward and interfere with the inner wall of the shell 210, thereby fixing the heating element 100 in the shell 210 of the aerosol product.

[0061] In another embodiment, the outer contour dimension of the electrode segment of the heating element 100 can also be equal to the inner cavity dimension of the aerosol product. Adhesive is applied locally at the position corresponding to the electrode segment on the outer shell 210 so that the heating element is fixed to the outer shell 210 by adhesive after being assembled into the designated position.

[0062] Please refer to Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20The equidistant spacing between the heating section 120 and the inner wall of the outer shell 210 ensures a uniform circumferential thickness of the outer cavity, i.e., the second aerosol forming matrix cavity 240, and uniform circumferential heating of the aerosol forming matrix 270, avoiding uneven heating in certain areas. In other words, if the outer shell 210 is cylindrical, the corresponding heating section 120 is also cylindrical; if the outer shell 210 is cubic, the corresponding heating section 120 is also cubic. By maintaining a consistent structural form, the equidistant spacing between the heating section 120 and the inner wall of the outer shell 210 is ensured, guaranteeing uniform heating and achieving uniform carbonization of the aerosol forming matrix 270 throughout.

[0063] Based on any of the above embodiments, please refer to Figure 3 The first electrode segment 110 and the second electrode segment 130 are both bent to form an inner cavity, which is filled with a breathable and high-temperature resistant structure.

[0064] Please refer to Figure 3 Both the first electrode segment 110 and the second electrode segment 130 are designed to be wound around a full circle, so that they have a certain strength to resist external forces. That is, when any position of the electrode segment comes into contact with the elastic conductive element 220, the reliability of the electrical connection between the two can be guaranteed under its own strength.

[0065] The breathable and high-temperature resistant structure seals the cavity of the outer shell 210 corresponding to the electrode segment, preventing aerosols from forming matrix 270 or debris from moving and falling out along the axial direction.

[0066] The breathable and high-temperature resistant structure includes any one of aerosol forming matrix 270, cellulose acetate tow, polylactic acid tow, and polyimide tow. When aerosol forming matrix 270 is selected for the breathable and high-temperature resistant structure, it can provide auxiliary aerosols.

[0067] Based on any of the above embodiments, please refer to Figure 8 The outer casing 210 also includes a plug portion 250 and a filter portion 260, which are fixedly connected to the heating element 100 via the outer casing 210.

[0068] It should be noted that if the outer casing 210 does not have a plug portion 250 and a filter portion 260, then the breathable and high-temperature resistant structure in the previous embodiment needs to be a die-cast block aerosol forming matrix 270 so as to confine the aerosol forming matrix 270 corresponding to the heating section 120 within the corresponding space of the outer casing 210.

[0069] In addition, for ease of understanding, cellulose acetate bundles, polylactic acid bundles, and polyimide bundles are also referred to as bundle segments 261.

[0070] The plug portion 250 is located on the side of the second electrode section 130 away from the heating section 120, and is used to reduce debris falling out; the filter portion 260 is located on the side of the first electrode section 110 away from the heating section 120, and is used to filter the generated aerosol.

[0071] The plug portion 250 includes any one of cellulose acetate bundles, polylactic acid bundles, polyimide bundles, and breathable sheets. When it is cellulose acetate bundles, polylactic acid bundles, or polyimide bundles, its specific length is 3~10mm.

[0072] The filter section 260 includes at least one of cellulose acetate tow, polylactic acid tow, polyimide tow, hollow paper tube 262, and porous silicone structure 263. The filter section 260 is configured to separate the aerosol forming matrix 270 from other components that do not have good heat resistance during suction heating, preventing damage due to excessively high temperatures.

[0073] When the filter section 260 includes a hollow paper tube 262, the hollow paper tube 262 and the first electrode section 110 are separated by any one of a porous silicone structure 263, cellulose acetate bundles, polylactic acid bundles, and polyimide bundles, thereby separating the high-temperature aerosol forming matrix 270 from the hollow paper tube 262 and preventing damage caused by excessive temperature. The filter section 260 and the plug section 250 are fixedly connected to the heating element 100 through the outer shell 210.

[0074] In one specific implementation, such as Figure 10 The filter section 260 includes any one of cellulose acetate tow, polylactic acid tow, or polyimide tow. In this case, the filter section 260 can effectively fix the aerosol forming matrix 270, ensure normal aerosol flow through its porous structure, and achieve effective cooling of the aerosol gas through its relatively long length.

[0075] For another specific implementation method, please refer to Figure 11 The filter section 260 includes any one of cellulose acetate bundles, polylactic acid bundles, and polyimide bundles, and also includes a hollow paper tube 262. Any one of the cellulose acetate bundles, polylactic acid bundles, and polyimide bundles is located between the first electrode section 110 and the hollow paper tube 262. At this time, the plug section 250 can effectively fix the aerosol forming matrix 270 and ensure the normal flow of aerosol through its own porous structure.

[0076] For another specific implementation method, please refer to Figure 12The filter section 260 includes a porous silica gel structure 263, a hollow paper tube 262, and any one of cellulose acetate tow, polylactic acid tow, or polyimide tow. The hollow paper tube 262 is located between any one of the cellulose acetate tow, polylactic acid tow, or polyimide tow, and the porous silica gel structure 263, with the porous silica gel structure 263 positioned close to the first electrode section 110. The porous silica gel structure 263, which has good heat resistance, separates the aerosol forming matrix 270 from the hollow paper tube.

[0077] Based on any of the above embodiments, please refer to Figure 21 , Figure 22 , Figure 23 , Figure 24 The present invention also provides an aerosol system, including a housing assembly 310, a cavity assembly 320, an aerosol article 200 provided in any of the above embodiments, and a power supply structure 330.

[0078] The housing assembly 310 has an air inlet 314 and a cigarette insert 315 along its axial direction. Airflow enters through the air inlet 314, passes through the aerosol product 200, and exits from the side of the cigarette insert 315. Specifically, the housing assembly 310 includes a housing 311, an upper cover 312, and a lower cover 313. The upper cover 312 and the lower cover 313 respectively cover the axial ends of the housing 311. The cigarette insert 315 is located on the upper cover 312, and the air inlet 314 is located on one side of the lower cover 313, thereby enclosing a space to accommodate the internal components.

[0079] The cavity assembly 320 is located inside the housing assembly 310, with its two axial ends corresponding to the air inlet 314 and the cigarette insertion port 315, respectively, for accommodating and supporting the aerosol product 200.

[0080] Please refer to Figure 25 The cavity assembly 320 includes a cigarette holder 321, a cigarette upper holder 322, and a cigarette base 323. The cigarette upper holder 322 and the cigarette base 323 are respectively connected to the two ends of the axial direction of the cigarette holder 321. The three together form a cavity for the aerosol product 200 to be inserted. The aerosol product 200 is inserted into the cavity through the cigarette insertion port 315. One side of the cigarette base 323 corresponds to the air inlet 314 so that airflow can enter the aerosol product 200.

[0081] In addition, a sealing ring 340 may be provided between the cavity assembly 320 and the aerosol product 200 to ensure the airflow path is sealed.

[0082] Please refer to Figure 7 , Figure 8The elastic conductive element 220 is arranged circumferentially around the opening 211 and is specifically located inside the cavity assembly 320. The two elastic conductive elements 220 are electrically connected to the first electrode segment 110 and the second electrode segment 130, respectively.

[0083] In addition, the elastic conductive element 220 is located on the outside of the housing 210. When the tar and other condensates generated by the suction are deposited downwards under the action of gravity, the electrical connection between the aerosol product and the battery is not affected, thus ensuring the reliability of the electrical connection.

[0084] In this example, the cross-sectional shape of the aerosol product can be circular, square, etc. The arrangement of the opening 211 of the aerosol product and the position of the elastic conductive element 220 can be adjusted according to the actual situation to ensure that the aerosol product does not need to be manually inserted into the battery device cavity at a specific angle to achieve normal electrical connection between the aerosol product and the power supply structure 330.

[0085] In particular, when the cross-section of the aerosol product is circular, the aerosol product may be rotated at any angle along the circumference. Correspondingly, the opening 211 of the aerosol product may appear in any position at the same height. During installation, the elastic conductive element 220 can be reliably electrically connected to the electrode segment through the opening 211.

[0086] Preferably, to avoid electrical connection failure, the elastic conductive element 220 needs to have a full-circuit design to ensure that the aerosol product can be inserted into the elastic conductive element 220 in a tight contact. In this case, the elastic conductive element is a crown spring structure with a full-circuit electrical contact, which can meet the usage requirements.

[0087] Specifically, the elastic conductive element 220 is preferably made of a material that still has good contact performance at temperatures above 280°C, such as high-performance copper alloys, nickel-based high-temperature alloys, and cobalt-based high-temperature alloys.

[0088] The power supply structure 330 is located on one side of the cavity assembly 320 and is used to electrically connect the elastic conductive element 220 and supply power to the aerosol product 200. The power supply structure 330 includes a main board 331, a battery bracket 332, and a battery cell 333. The battery cell 333 is mounted on the battery bracket 332. The main board 331 is electrically connected to the battery cell 333 and manages the heating and control process. The main board 331 is connected to the elastic conductive element 220 through a wire, thereby supplying power to the heating section 120 through the elastic conductive element 220 and the electrode section.

[0089] An elastic conductive element 220 is arranged on the side wall of the cavity of the cavity assembly 320 that houses the aerosol product 200, corresponding to the opening 211. When the aerosol product 200 is inserted into the cavity, the elastic conductive element 220 contacts the electrical contacts of the electrode segment through the opening 211, establishing an electrical connection. In addition, a button 350 is provided on the housing assembly 310 for controlling the start and stop of power supply.

[0090] Based on any of the above embodiments, the elastic conductive element 220 includes a plurality of electrical contacts arranged circumferentially thereon, and the distance between any two adjacent electrical contacts along the outer circumferential direction is smaller than the size of the opening 211.

[0091] Since the distance between adjacent electrical contacts is less than the size of the opening 211, when the elastic conductive element 220 is installed on the housing 210 at any angle, at least one electrical contact can be directly opposite the opening 211, so that the elastic conductive element 220 can always make good contact with the electrical contacts of the electrode segment, thereby ensuring the reliability of the electrical connection.

[0092] In this embodiment, the corresponding elastic conductive element 220 is a crown spring design, which has a full circle of electrical contacts.

[0093] Based on any of the above embodiments, a monitoring element is mounted on the outside of the cavity assembly 320 to acquire the temperature of the aerosol article 200, so as to adjust the output power of the power supply structure 330.

[0094] The monitoring device is preferably an infrared sensor, which is located at the corresponding position of the cavity in the cavity assembly 320 that houses the aerosol product 200, and can acquire the temperature of the outer surface of the aerosol product 200 in real time. The main board 331 of the power supply structure 330 can adjust the output power of the power supply structure 330 according to the temperature acquired by the monitoring device, and control the heating temperature within a suitable range to avoid poor suction taste and release of harmful substances due to excessive temperature.

[0095] In this embodiment, the motherboard 331 can control the discharge of the battery cell 333 according to a preset heating curve, and, in conjunction with the real-time feedback of the outer surface temperature of the aerosol product 200 from the monitoring device, perform closed-loop regulation of the output power of the power supply structure 330 to maintain the high-temperature heating section where the heating section 120 is located within a preset temperature range, typically not lower than 280°C and not exceeding approximately 350°C. This ensures that the aerosol forming matrix 270 is fully vaporized while avoiding excessively high temperatures that could lead to poor suction taste and the release of harmful substances. When the button 350 is triggered or the suction action ends, the motherboard 331 can correspondingly control the power supply structure 330 to stop or reduce its output to balance user experience and energy consumption.

[0096] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0097] The above provides a detailed description of the heating element, aerosol product, and aerosol system provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A heating element disposed within the outer shell (210) of an aerosol product (200), characterized in that, The heating element (100) includes a first electrode segment (110), a heating segment (120), and a second electrode segment (130) arranged sequentially along the axial direction of the heating element (100). The first electrode segment (110) and the second electrode segment (130) are both bent and used to connect to the power supply structure (330). The heating segment (120) is spirally wound and its two ends are respectively connected to the first electrode segment (110) and the second electrode segment (130). The inner cavity of the heating segment (120) is a first aerosol forming matrix cavity (230), and the outer periphery of the heating segment (120) is used to form a second aerosol forming matrix cavity (240) between itself and the inner wall of the outer shell (210).

2. The heating element according to claim 1, characterized in that, On a cross section perpendicular to the central axis of the heating element (100), the cross-sectional area of ​​either the first electrode segment (110) or the second electrode segment (130) is greater than the cross-sectional area of ​​the heating segment (120).

3. The heating element according to claim 1, characterized in that, The heating section (120) includes multiple interconnected spiral sections (121), and the axial dimension of each spiral section (121) is smaller than the axial dimensions of the first electrode section (110) and the second electrode section (130).

4. The heating element according to claim 1, characterized in that, The first electrode segment (110), the second electrode segment (130), and the heating segment (120) are integrally formed.

5. The heating element according to claim 1, characterized in that, If the inner diameter of the heating section (120) is r, then: ； Where b is the thickness of the heating section (120) and R0 is the inner diameter of the outer shell (210).

6. An aerosol product, characterized in that, include: The heating element (100) is the heating element (100) according to any one of claims 1 to 5. The housing (210) contains the heating element (100) disposed within the housing (210). The housing (210) has an opening (211) in the axial direction corresponding to the first electrode segment (110) and the second electrode segment (130). The first electrode segment (110) and the second electrode segment (130) have at least a portion of their positions exposed in the opening (211).

7. The aerosol product according to claim 6, characterized in that, The outer periphery dimension of either the first electrode segment (110) or the second electrode segment (130) is greater than or equal to the inner cavity dimension of the outer shell (210); The distance between each circumferential position of the heating section (120) and the inner wall of the outer shell (210) is equal.

8. The aerosol product according to claim 6, characterized in that, Both the first electrode segment (110) and the second electrode segment (130) are bent to form an inner cavity, which is filled with a breathable and high-temperature resistant structure, which includes any one of an aerosol forming matrix (270), cellulose acetate bundles, polylactic acid bundles, and polyimide bundles.

9. The aerosol product according to claim 6, characterized in that, The housing (210) is further provided with a plug portion (250) and a filter portion (260). The plug portion (250) is located on the side of the second electrode segment (130) away from the heating segment (120), and the filter portion (260) is located on the side of the first electrode segment (110) away from the heating segment (120). The plug portion (250) includes any one of cellulose acetate bundles, polylactic acid bundles, polyimide bundles, or breathable sheet material.

10. The aerosol product according to claim 9, characterized in that, The filter section (260) includes at least one of cellulose acetate bundles, polylactic acid bundles, polyimide bundles, and porous silicone structure (263).

11. The aerosol product according to claim 10, characterized in that, The filter section (260) further includes a hollow paper tube (262), wherein any one of the cellulose acetate bundle, the polylactic acid bundle, and the polyimide bundle is located between the first electrode section (110) and the hollow paper tube (262); Alternatively, the hollow paper tube (262) is located between any one of the cellulose acetate bundle, the polylactic acid bundle, the polyimide bundle, and the porous silicone structure (263), and the porous silicone structure (263) is disposed close to the first electrode segment (110).

12. An aerosol system, characterized in that, include: The housing assembly (310) has an air inlet (314) and a cigarette insert (315) along its axial direction. A cavity assembly (320) is disposed within the housing assembly (310), and the two axial ends of the cavity assembly (320) are respectively provided to correspond to the air inlet (314) and the cigarette insertion port (315); The aerosol article (200) is the aerosol article (200) according to any one of claims 6-11, wherein the aerosol article (200) is installed in the cavity assembly (320); An elastic conductive element (220) is disposed inside the cavity assembly (320) and is disposed corresponding to the opening (211) of the outer shell (210). The two elastic conductive elements (220) are electrically connected to the first electrode segment (110) and the second electrode segment (130) respectively. A power supply structure (330) is provided on one side of the cavity assembly (320) and electrically connected to the elastic conductive element (220).

13. The aerosol system according to claim 12, characterized in that, The elastic conductive element (220) includes a plurality of electrical contacts arranged circumferentially thereon, and the distance between any two adjacent electrical contacts along the outer circumferential direction is smaller than the size of the opening (211).

14. The aerosol system according to claim 12, characterized in that, A monitoring element is installed on the outside of the cavity assembly (320) to obtain the temperature of the aerosol product (200) in order to adjust the output power of the power supply structure (330).

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