Aerosol-generating article

Abstract

The utility model provides an aerosol generating product, the aerosol generating product comprises a fuming part, a power supply part and a filtering part, the fuming part comprises a fuming substrate and a heating element which are in thermal contact with each other, and the heating element is used for heating the fuming substrate; the power supply part comprises a power supply electrically connected with the heating element; the filtering part is arranged at the downstream of the fuming part; and the heating element is made of carbon nanofibers. According to the aerosol generating product provided by the invention, the heating element is made of the carbon nanofibers, so that the heating rate can be effectively increased, and the reliability and user experience of the aerosol generating product can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerosol generation, in particular to an aerosol generating article. BACKGROUND

[0002] The heating method of the aerosol generating article on the market at present often uses metal heating film or heating wire for heating, which consumes limited noble metal resources and has the risk of metal ion overflow. At the same time, the metal heating film or heating wire has the disadvantages of low energy conversion rate and slow heating speed, resulting in low smoke volume and affecting user experience. CONTENT OF THE UTILITY MODEL

[0003] The technical problem solved by the present application is to provide an aerosol generating article to improve the reliability and user experience of the aerosol generating article.

[0004] The present application provides an aerosol generating article, comprising: a smoke generating part, comprising a smoke generating substrate and a heating element in thermal contact with each other, the heating element being used to heat the smoke generating substrate; a power supply part, comprising a power supply electrically connected with the heating element; a filter part, the filter part being arranged downstream of the smoke generating part; and the material of the heating element being carbon nanofiber.

[0005] According to an embodiment of the present application, the aerosol generating article further comprises a heat conducting element; the heat conducting element is arranged outside the heating element, and the heat conducting element and the heating element form a heating element, which is inserted into the smoke generating substrate and in contact with the smoke generating substrate; or the heat conducting element is arranged around the periphery of the smoke generating substrate, and the heat conducting element is arranged between the heating element and the smoke generating substrate.

[0006] According to an embodiment of the present application, the material of the heat conducting element is quartz or metal.

[0007] According to an embodiment of the present application, the aerosol generating article further comprises a wrapping element, which wraps the power supply part, the smoke generating part and the filter part to form an integral whole.

[0008] According to an embodiment of the present application, the power supply part and the smoke generating part are detachably connected.

[0009] According to an embodiment of the present application, the aerosol generating article further comprises a cooling part, which is arranged downstream of the smoke generating part and upstream of the filter part; and / or the aerosol generating article further comprises a supporting part, which is arranged on the side of the smoke generating part close to the filter part.

[0010] According to an embodiment of the present application, the power supply part is arranged upstream of the smoke generating part, one end of the power supply part is in fluid communication with the outside, and the other end is in fluid communication with the smoke generating part.

[0011] According to an embodiment of the present application, an isolating member is arranged between the smoking portion and the power supply portion, and the isolating member separates the smoking portion from the power supply portion; the isolating member is provided with a first air inlet hole communicating with the smoking portion and the power supply portion, or the isolating member is a mesh structure.

[0012] According to an embodiment of the present application, the heating member is provided with a pin; the isolating member is further provided with an electrode hole, the pin is inserted into the electrode hole, and the heating member is electrically connected to the power supply through the pin; or the pin passes through the first air inlet hole or the mesh structure of the isolating member and is electrically connected to the power supply.

[0013] According to an embodiment of the present application, the power supply portion is provided with a bottom cover at an end away from the smoking portion, the bottom cover is provided with a switch member, and the switch member is used to control the power supply to supply power to the heating member; the bottom cover is further provided with a second air inlet hole, and the second air inlet hole communicates the power supply portion with the outside.

[0014] The aerosol generating article provided by the present application uses carbon nanofiber to make a heating member, and uses the advantages of high thermal efficiency and high chemical stability of carbon nanofiber to effectively improve the temperature rising rate, which is conducive to improving the reliability and user experience of the aerosol generating article. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 is a cross-sectional view of an embodiment of the aerosol generating article of the present application;

[0017] Figure 2 is Figure 1 is a structural schematic view of the heating member of the aerosol generating article shown in FIG. 1;

[0018] Figure 3 is a structural schematic view of an embodiment of the heating member of the aerosol generating article of the present application;

[0019] Figure 4 is a cross-sectional view of another embodiment of the aerosol generating article of the present application;

[0020] Figure 5 is Figure 4 is a structural schematic view of the heating member of the aerosol generating article shown in FIG. 1;

[0021] Figure 6is Figure 1 a structure diagram of a spacer of the aerosol generating article shown in FIG. 1;

[0022] Figure 7 is Figure 1 a structure diagram of a bottom cover of the aerosol generating article shown in FIG. 1.

[0023] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0024] aerosol generating article 10, smoking portion 110, accommodating cavity 1101, heating member 120, heating element 121, pin 1211, pattern area 1212, heat conducting member 122, accommodating groove 1201, bottom wall 1221, spacer 130, electrode hole 1301, first air inlet hole 1302, support portion 140, temperature reducing portion 150, connecting member 191, wrapping member 190, power supply portion 180, air inlet cavity 1801, second air inlet hole 1802, switch member 181, bottom cover 182, power source 170, filter portion 160, smoking substrate 20. DETAILED DESCRIPTION

[0025] The application will be further described below in conjunction with the drawings and embodiments. It is particularly pointed out that the following embodiments are only for illustrating the application, but not for limiting the scope of the application. Similarly, the following embodiments are only part of the embodiments of the application, not all the embodiments of the application, and all other embodiments obtained by those skilled in the art without creative labor are within the scope of the application.

[0026] The terms "first", "second", "third" in the embodiments of the application are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the application are only for explaining the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or components inherent to the process, method, product or device.

[0027] Reference to an "embodiment" in this document means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0028] The embodiment of the application provides an aerosol generating article 10, please refer to Figure 1 and Figure 2 The aerosol generating article 10 comprises a smoking part 110, a power supply part 180, a filtering part 160 and a wrapping part 190, the wrapping part 190 is wrapped outside the power supply part 180, the smoking part 110 and the filtering part 160 to form a whole; the smoking part 110 comprises a smoking substrate 20 and a heating element 121 in thermal contact with each other, and the heating element 121 is used for heating the smoking substrate 20 to form an aerosol; the power supply part 180 comprises a power supply 170 electrically connected with the heating element 121, and the power supply 170 can supply power to the heating element 121; the filtering part 160 is arranged downstream of the smoking part 110, and the filtering part 160 is used for filtering the aerosol generated by the smoking part 110, and a user can smoke the aerosol formed by the smoking part 110 through the filtering part 160. The material of the heating element 121 is carbon nanofiber.

[0029] Understandably, the upstream and the downstream in the application are based on the relative position relationship of gas flow in the use process of the aerosol generating article 10. For example, in the use process of the aerosol generating article 10, the gas flows from the smoking part 110 to the filtering part 160, so that the smoking part 110 is located upstream of the filtering part 160, that is, the filtering part 160 is located downstream of the smoking part 110.

[0030] Specifically, the smoking substrate 20 is solid tobacco material such as tobacco leaf and tobacco shred. The smoking substrate 20 can generate smoke with flavor components after being heated.

[0031] The carbon nanofiber is a nanocarbon material, and the nanocarbon material refers to carbon material with at least one dimension of a dispersed phase less than 100 nm. The dispersed phase can be composed of carbon atoms or heteroatoms (non-carbon atoms), or even a nanopore. The nanocarbon material mainly includes three types: carbon nanotube, carbon nanofiber and nanocarbon sphere.

[0032] The heating methods of the heating-not-burning devices on the market mainly include carbon heating and electric heating. Carbon heating mainly uses the oxidation reaction of carbon itself to generate heat to provide energy for the smoke medium, causing loss of carbon itself and risk of generating harmful components. The cigarette of the carbon heating-not-burning device is similar to the ordinary cigarette, and a high-purity carbon rod is arranged at the cigarette end. When smoking, the carbon rod is ignited by a tool, and the hot gas generated by the combustion of the carbon rod is used to heat the tobacco material behind to deliver the aroma of the tobacco to the smoker. However, since the hot gas after the combustion of the carbon is used to heat the tobacco, the hot gas after the combustion of the carbon is easily inhaled into the human body along with the smoke, and thus the amount of carbon monoxide inhaled into the human body is increased, increasing the harm to the human body. Electric heating often uses metal heating films or heating wires, consumes limited noble metal resources, and has the risk of metal ion overflow.

[0033] Carbon nanofiber (CNF for short) has high chemical stability and will not produce harmful substances at the extreme high temperature of heated cigarettes. It is a high-temperature-resistant material and produces fewer harmful components than other heating methods. At the same time, since no metal heating film or heating wire is used, not only the limited noble metal resources are saved, but also there is no metal ion overflow, which is safer. Unlike traditional heating sheets or heating wires, carbon nanofiber relies on metal materials to heat. It is volumetric heating, has a larger heating surface, is stable in operation, has a long service life, and can effectively avoid the problems of burnt taste and difficulty in cleaning. Due to high thermal efficiency, the use of carbon nanofiber can realize the miniaturization of the heating body, the entire smoking set, and the cigarette. Moreover, unlike traditional resistance heating, carbon nanofiber does not require complex processing technology, has high manufacturing efficiency, and is conducive to reducing costs.

[0034] The heating element 121 in the present application is made of carbon nanofiber. Compared with the existing heating film or heating wire type heating body, the heating element 121 made of carbon nanofiber is three-dimensional heating, whole heating, and homogeneous heating, which is conducive to improving the heating uniformity. Moreover, carbon nanofiber has high thermal conductivity and high electric-to-thermal conversion efficiency, which is energy-saving, efficient, and conducive to improving the heating efficiency. Due to the high thermal efficiency and safety and stability of carbon nanofiber, compared with the existing heating-not-burning device, the aerosol-generating article 10 using carbon nanofiber heating can integrate the smoking part 110 and the power supply part 180 into one, simplify the structure of the aerosol-generating article 10, improve the convenience of the aerosol-generating article 10, reduce the user's use cost, and use more safely. Moreover, the heating element 121 made of carbon nanofiber has the advantages of light weight and low cost, which helps to reduce the manufacturing cost of the aerosol-generating article 10 and promote the miniaturization and lightness of the aerosol-generating article 10.

[0035] Specifically, the heating element 121 made of carbon nanofibers can withstand high temperature above 800 DEG C, and has the advantages of safety and stability, high energy conversion rate, fast heating speed, high smoke volume, high utilization rate of tobacco material, fast and efficient, low price, faster heating speed, larger heating area and more uniform heating compared with traditional resistance heating.

[0036] In some embodiments, the method for making carbon nanofibers includes: (1) laser evaporation of graphite; (2) plasma jet deposition; (3) condensed phase electrolytic generation; (4) graphite arc method; (5) chemical vapor deposition.

[0037] In some embodiments, the heating element 121 made of carbon nanofibers can have various shapes, for example, the heating element 121 can have a shape of a sheet, a cylinder, a cylinder, a cone, a needle, etc.

[0038] In some embodiments, the appearance of the wrapping member 190 can be in the shape of a cylinder, a prism or an ellipsoid, etc. The design of assembling the smoking portion 110 and the power supply portion 180 together in the wrapping member 190 can improve the convenience of the aerosol generating article 10.

[0039] In some embodiments, the material of the wrapping member 190 can be plant fiber, and the wrapping member 190 can be odorless, high in tensile strength, and good in moisture resistance, such as mica paper, bast paper and wood pulp paper, etc. In other embodiments, the material of the wrapping member 190 can also be plastic.

[0040] In some embodiments, the wrapping member 190 can be formed by winding a paper or by splicing multiple papers, and different parts of the wrapping member 190 can be made of papers with different properties. For example, the wrapping member 190 at the filter portion 160 can be made of water-resistant and wet-strength paper because it is directly used for smoking, and the wrapping member 190 at the smoking portion 110 can be made of cigarette paper with high strength.

[0041] In some embodiments, the smoking portion 110 is provided with a containing cavity 1101 for storing the smoking substrate 20, and the heating element 121 is arranged in the containing cavity 1101. The containing cavity 1101 can be formed by a shell arranged inside the wrapping member 190, or the containing cavity 1101 can be directly formed by the wrapping member 190.

[0042] In some embodiments, the power supply portion 180 and the smoking portion 110 can be detachably connected. When the user needs to use the aerosol generating article 10, the smoking portion 110 can be mounted to the power supply portion 180, and the power supply portion 180 can supply power to the smoking portion 110. Specifically, the power supply portion 180 and the smoking portion 110 can be detachably connected through threaded connection, buckle connection, magnetic attraction, etc.

[0043] In some embodiments, the thermal contact between the smoking substrate 20 and the heating element 121 can be direct contact or indirect contact, i.e. the smoking substrate 20 and the heating element 121 can be in direct contact for heat transfer, or the smoking substrate 20 and the heating element 121 can be in indirect contact for heat transfer through a heat-conducting intermediate.

[0044] In some embodiments, as shown in FIG. 1, the heating element 121 can be directly inserted into the smoking substrate 20 to contact the smoking substrate 20, and the carbon nanofiber is used to heat the smoking substrate 20. Figure 2

[0045] In some embodiments, as shown in FIG. 1, the heating element 121 can be directly inserted into the smoking substrate 20 to contact the smoking substrate 20, and the carbon nanofiber is used to heat the smoking substrate 20. Figure 3 In some embodiments, as shown in FIG. 1, the heating element 121 can be directly inserted into the smoking substrate 20 to contact the smoking substrate 20, and the carbon nanofiber is used to heat the smoking substrate 20.

[0046] In some embodiments, the heat-conducting element 122 is arranged on the heating element 121, and the heat generated by the heating element 121 can be transferred to the heat-conducting element 122 to heat the smoking substrate 20 outside the heat-conducting element 122. The heat-conducting element 122 can play a role in transferring heat, so that the heat distribution of the heating element 120 is more uniform, and at the same time, the heat-conducting element 122 can protect the heating element 121, avoiding direct contact between the smoking substrate 20 and the heating element 121, and improving the service life of the heating element 121.

[0047] In some embodiments, as shown in FIG. 1, the heating element 121 can be directly inserted into the smoking substrate 20 to contact the smoking substrate 20, and the carbon nanofiber is used to heat the smoking substrate 20. Figure 4 Figure 5 In some embodiments, as shown in FIG. 1, the heating element 121 can be directly inserted into the smoking substrate 20 to contact the smoking substrate 20, and the carbon nanofiber is used to heat the smoking substrate 20.

[0048] ​​In some embodiments, the heat conducting member 122 can be formed with a receiving groove 1201 which can be used to store the smoking substrate 20, the heat generating member 121 can be arranged around the heat conducting member 122, the heat conducting member 122 away from the bottom wall 1221 of the receiving groove 1201 and the heat generating member 121 covered on the bottom wall 1221 can be provided with a through hole so that the gas can enter the receiving groove 1201 from the through hole. Specifically, the wrapping member 190 can be in a cylindrical shape, the heating member 120 can be in a cylindrical shape to cooperate with the wrapping member 190, the heating member 120 can be attached to the inner side of the wrapping member 190, and the heat generating member 121 can be located between the heat conducting member 122 and the wrapping member 190.

[0049] In some embodiments, the heating member 120 can be in a rectangular shape, a pentagonal shape, a cylindrical shape, etc.

[0050] In some embodiments, the heat conducting member 122 can be made of quartz or metal, for example, the heat conducting member 122 can be a quartz tube or a copper tube, and the heat generating member 121 and the heat conducting member 122 cooperate to generate heat conduction, heat convection and heat radiation.

[0051] In some embodiments, the carbon nanofiber used to make the heat generating member 121 can have a diameter of 50nm-200nm and a length distribution of 50nm-100um, and the carbon nanofiber can be a quasi-one-dimensional carbon material between nanometer carbon tubes and ordinary carbon fibers.

[0052] In some embodiments, the smoking substrate 20 in the receiving cavity 1101 can be in a strip shape, a granular shape, a filamentous shape, a paste shape, a sheet shape, etc., and the weight of the smoking substrate 20 can be 0.1g-0.8g. The power of the power supply 170 can be consumed by the heat generating member 121 to heat and consume the smoking substrate 20 of the smoking portion 110, and the heating time of the heat generating member 121 can be 4min-5min. As shown in Figure 1 The connecting member 191 can be an electric circuit board, and the electric circuit board can be provided with a control circuit, and the control circuit can be used to set the output power curve according to the weight of the smoking substrate 20 and adjust the output power of the power supply 170.

[0053] In some embodiments, the heat generating member 121 can be formed with a pattern area 1212. The pattern of the pattern area 1212 can be a straight line shape, an arc shape, a curved line shape, etc. Specifically, the heat generating member 121 can be formed with a pattern by etching, and the heat generating member 121 can also be formed with a pattern by mechanical processing. The pattern etched on the carbon nanofiber can change the resistance of the carbon nanofiber, so that the resistance matches the power supply 170 to generate heat by electrification. Specifically, the pattern area 1212 can be in a wavy shape, which can extend along the length direction of the heat generating member 121 or surround the heat generating member 121.

[0054] In some embodiments, as shown in Figure 1 The power supply part 180 is arranged upstream of the smoking part 110, one end of the power supply part 180 is in fluid communication with the outside, and the other end is in fluid communication with the smoking part 110.

[0055] In some embodiments, the power supply part 180 is provided with an air inlet cavity 1801, the air inlet cavity 1801 is in communication with the smoking part 110, and the power supply 170 is arranged in the air inlet cavity 1801.

[0056] In some embodiments, as shown in Figure 6 The isolation member 130 separates the smoking part 110 and the power supply part 180.

[0057] In some embodiments, the isolation member 130 is provided with a first air inlet hole 1302, and the air inlet cavity 1801 is in communication with the containing cavity 1101 through the first air inlet hole 1302. Specifically, the shape of the first air inlet hole 1302 on the isolation member 130 can be circular, triangular, strip-shaped, etc.

[0058] In some embodiments, the isolation member 130 is a mesh structure to communicate between the smoking part 110 and the power supply part 180.

[0059] In some embodiments, the isolation member 130 is provided with an electrode hole 1301, the heating element 121 is provided with a pin 1211, the pin 1211 is inserted into the electrode hole 1301, and the heating element 121 is electrically connected to the power supply 170 through the pin 1211. Specifically, the pin 1211 can be selected from one of metal electrodes such as graphite, nickel, copper, iron, aluminum, silver, etc.

[0060] In some other embodiments, the pin 1211 of the heating element 121 can also pass through the first air inlet hole 1302 or the mesh structure of the isolation member 130 to be electrically connected to the power supply 170.

[0061] In some embodiments, the isolation member 130 can be used to isolate the containing cavity 1101 and the air inlet cavity 1801, to prevent the smoking substrate 20 in the smoking part 110 from falling into the power supply part 180, and the area of the opening on the isolation member 130 accounts for no more than 80% of the area of the isolation member 130, to ensure the strength and isolation effect of the isolation member 130.

[0062] In some other embodiments, the first air inlet hole 1302 can be communicated through the through hole on the bottom wall 1221 and the containing groove 1201, so that the gas in the air inlet cavity 1801 can flow into the containing groove 1201.

[0063] In some embodiments, as shown in Figure 1 and Figure 7As shown, the wrapping member 190 is in a cylindrical shape, one end of the wrapping member 190 is sealed, and the wrapping member 190 and the isolation member 130 surround the power supply part 180. The part of the wrapping member 190 located in the power supply part 180 is provided with a second air inlet hole 1802, and the second air inlet hole 1802 communicates the power supply part 180 with the outside.

[0064] In some embodiments, the aerosol generating article 10 further comprises a switch member 181, which is arranged at the end of the power supply part 180 away from the smoking part 110. The switch member 181 is used to control the power supply 170 to supply power to the heating member 121. The second air inlet hole 1802 is arranged around the switch member 181.

[0065] In some embodiments, the end of the power supply part 180 away from the smoking part 110 is provided with a bottom cover 182, and the switch member 181 is located on the bottom cover 182. The switch member 181 can be electrically connected to the power supply 170 through a wire or a circuit board to control the power supply 170 to supply power or stop supplying power. The switch member 181 can be activated by negative pressure or power. The heating member 121 can continuously heat for 4-5 minutes after the switch member 181 is activated. The switch member 181 can include a pressure sensor that can sense the negative pressure in the air inlet cavity 1801 to control the power supply 170 to supply power. The switch member 181 can also be a manual switch that continuously heats the heating member 121 after being turned on.

[0066] In some embodiments, the second air inlet hole 1802 can be formed on the bottom cover 182. The area of the second air inlet hole 1802 accounts for no more than 80% of the area of the bottom cover 182 to ensure the strength of the bottom cover 182.

[0067] In some embodiments, the bottom cover 182 and the wrapping member 190 can be an integrated structure, and the bottom cover 182 and the wrapping member 190 can be integrally injection molded.

[0068] In some embodiments, as shown, Figure 1 The aerosol generating article 10 further comprises a cooling part 150, which is arranged downstream of the smoking part 110 and upstream of the filter part 160.

[0069] In some embodiments, the aerosol generating article 10 further comprises a support part 140, which is arranged on the side of the smoking part 110 close to the filter part 160.

[0070] The support part 140 is used to support the smoking substrate 20 of the smoking part 110 when it is subjected to an external force to prevent it from moving axially. The support part 140 can be made of acetate fiber tows. In some embodiments, the support part 140 can also support the structure of the aerosol generating article 10.

[0071] The purpose of the temperature reduction portion 150 is to reduce the temperature of the aerosol generated by the smoking portion 110, making it easier to enter the mouth, wherein the temperature reduction portion 150 can adopt a functional material having a melting point or glass transition temperature between 50°C and 150°C (wherein the functional material includes but is not limited to adopting polylactic acid, polyethylene glycol, polyalkane compound, etc.), so that the temperature reduction portion 150 can well receive the hot gas of the smoking portion 110 and be converted into a lower temperature aerosol.

[0072] In some embodiments, the temperature reduction portion 150 can also not be provided with a functional material, and the temperature reduction portion 150 can be a hollow tube or a hollow space formed by the wrapping member 190 surrounding it, and the air inside the temperature reduction portion 150 is used to cool the hot gas of the smoking portion 110.

[0073] In some embodiments, the temperature reduction portion 150 can be provided with air holes around the periphery, and the air holes communicate the internal space of the temperature reduction portion 150 with the outside, and the outside air can enter the temperature reduction portion 150 through the air holes to cool the hot gas of the smoking portion 110.

[0074] The filter portion 160 is used to filter the aerosol passing through the temperature reduction portion 150, and the filter portion 160 can be formed by acetate fiber strands, polylactic acid strands, or strands mixed in proportion with acetate and polylactic acid.

[0075] In some embodiments, the wrapping member 190 wraps the outside of the power supply portion 180, the smoking portion 110, the support portion 140, the temperature reduction portion 150, and the filter portion 160 to form the aerosol generating article 10. The bottom cover 182, the power supply portion 180, the isolation member 130, the smoking portion 110, the support portion 140, the temperature reduction portion 150, and the filter portion 160 are sequentially arranged in the wrapping member 190 from bottom to top along the axial direction. The external air enters the air inlet cavity 1801 from the second air inlet hole 1802 of the bottom cover 182, passes through the first air inlet hole 1302 of the isolation member 130, and enters the containing cavity 1101. The smoking substrate 20 of the smoking portion 110 is heated by the heating element 121 to generate an aerosol, which enters the temperature reduction portion 150 and the filter portion 160 in sequence from the support portion 140, and is then inhaled by the human body.

[0076] The aerosol generating article provided in the application uses the heating element 121 made of carbon nanofiber material to heat the smoking substrate 20 to form an aerosol. The carbon nanofiber material has the advantages of high temperature resistance and high chemical stability. Compared with the traditional heating method, the heating speed is fast, the heating area is large, the heating is more uniform, the heating rate and the aerosol generating effect can be effectively improved, and the reliability and user experience of the aerosol generating article are improved. At the same time, the smoking part and the power supply part of the aerosol generating article 10 are integrated, and the carbon nanofiber has the advantages of high thermal efficiency, safety and stability, light weight and low cost. The structure of the aerosol generating article 10 can be simplified, the structure of the aerosol generating article 10 is simple, the manufacturing process is simplified, the manufacturing efficiency is improved, the production cost and the user use cost are reduced, the convenience and safety of the aerosol generating article 10 are improved, and the miniaturization and lightness of the aerosol generating article are promoted.

[0077] The above only describes some embodiments of the application, and does not limit the protection scope of the application. Any equivalent device or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. An aerosol-generating article, characterized in that, The aerosol generating article comprises: a smoking portion comprising a smoking substrate and a heating element in thermal contact with each other, the heating element being configured to heat the smoking substrate; a power supply portion comprising a power source electrically connected to the heating element; a filter portion arranged downstream of the smoking portion; the heating element is made of carbon nanofibers.

2. An aerosol-generating article according to claim 1, wherein, The aerosol generating article further comprises a heat conducting element; the heat conducting element is arranged outside the heating element, and the heat conducting element and the heating element form a heating element which is inserted into the smoking substrate and in contact with the smoking substrate; alternatively, the heat conducting element is arranged around the periphery of the smoking substrate, and the heat conducting element is arranged between the heating element and the smoking substrate.

3. An aerosol-generating article according to claim 2, wherein, The heat conducting element is made of quartz or metal.

4. An aerosol-generating article according to claim 1, wherein The aerosol generating article further comprises a wrapping element which wraps the power supply portion, the smoking portion and the filter portion to form an integral whole.

5. An aerosol-generating article according to claim 1, wherein The power supply portion and the smoking portion are detachably connected.

6. An aerosol-generating article according to claim 1, wherein, The aerosol generating article further comprises a cooling portion arranged downstream of the smoking portion and upstream of the filter portion. The power supply portion is arranged upstream of the smoking portion, one end of the power supply portion is in fluid communication with the outside, and the other end is in fluid communication with the smoking portion.

7. An aerosol-generating article according to any one of claims 1 to 6, wherein An isolation element is arranged between the smoking portion and the power supply portion, and the isolation element separates the smoking portion and the power supply portion.

8. An aerosol-generating article according to claim 7, wherein, The isolation element is provided with a first air inlet hole which communicates with the smoking portion and the power supply portion, or the isolation element is in a mesh structure. The heating element is provided with a pin; 9. An aerosol-generating article according to claim 8, wherein, The isolation element is further provided with an electrode hole, the pin is inserted into the electrode hole, and the heating element is electrically connected to the power source through the pin; alternatively, the pin passes through the first air inlet hole or the mesh structure of the isolation element and is electrically connected to the power source. The end of the power supply portion away from the smoking portion is provided with a bottom cover, the bottom cover is provided with a switch element for controlling the power source to supply power to the heating element, and the bottom cover is further provided with a second air inlet hole which communicates the power supply portion with the outside.

10. An aerosol-generating article according to claim 8, wherein, ​

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