Aerosol generating substrate, aerosol generating product and electronic atomization device
By designing the parameter differences between the base section and the adjustment section in the aerosol generation matrix, the heat transfer rate is controlled, and the problem of inconsistent aerosol release is solved and the consistency of the suction experience is improved.
Patent Information
- Application Number
- CN202310817621.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-04
- Publication Date
- 2025-01-07
AI Technical Summary
The existing aerosol-generating matrix is released inconsistently during heating, resulting in inconsistent effects before and after the suction experience.
By designing an aerosol-generating matrix, in which the base section and the adjustment section are sleeved radially, and at least one parameter (thermal conductivity, mass, wall thickness of the medium, total cross-sectional area of the medium) is different, the heat transfer rate is controlled, This makes the aerosol release rate consistent.
The consistency of aerosol release in the front and rear sections of suction is achieved, and the front and back consistency effect of the suction experience is improved.
Smart Images
Figure CN119257303A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of aerosol generation, and in particular to an aerosol generating substrate, an aerosol generating product and an electronic atomization device. Background Art
[0002] The aerosol-generating substrate can form an aerosol by ignition or by heating without burning. Taking the aerosol-generating substrate that is heated without burning as an example, the aerosol-generating substrate is heated by an external heat source so that the aerosol-generating substrate is just heated to a degree sufficient to emit an aerosol, and the aerosol-generating substrate does not burn. When used, the aerosol-generating substrate is heated to release the aerosol.
[0003] In the related art, the aerosol generating substrate is heated by circumferential or central heating. Central heating means that a heating element is inserted into the interior of the aerosol generating substrate to heat the aerosol generating substrate from the inside to the outside. Circumferential heating means that a heating element is arranged at the periphery of the aerosol generating substrate to heat the aerosol generating substrate from the outside to the inside. However, in the heating process of the aerosol generating substrate, there is a problem of poor consistency such as faster or slower aerosol release. Summary of the invention
[0004] In view of this, the embodiments of the present application hope to provide an aerosol generating substrate, an aerosol generating product and an electronic atomization device that can improve the consistency of aerosol release.
[0005] To achieve the above-mentioned purpose, the present application embodiment provides an aerosol generating substrate, including:
[0006] Basic segment;
[0007] The adjusting section, the base section and the adjusting section are radially sleeved, one of the radial surfaces of the base section and the adjusting section is a heating surface, and at least one parameter of the adjusting section and the base section is different, and the parameter includes thermal conductivity, mass, wall thickness of the medium and total cross-sectional area of the medium.
[0008] In some embodiments, the base segment forms an annular placement space, the adjustment segment is located in the placement space, the adjustment segment is connected to the base segment on both inner and outer sides along the radial direction, and the inner surface or outer surface of the base segment along the radial direction is a heating surface.
[0009] In some embodiments, the wall thickness of the medium of the adjustment section is smaller than the wall thickness of the medium of the base section.
[0010] In some embodiments, the base segment includes an outer ring portion and a central portion, the outer ring portion surrounds the outer circumference of the central portion to jointly define the placement space, and the wall thickness of the medium in the central portion is 0.2 mm to 0.25 mm.
[0011] In some embodiments, the total cross-sectional area of the medium of the base section is greater than the total cross-sectional area of the medium of the adjustment section.
[0012] In some embodiments, the mass of the base segment is greater than the mass of the adjustment segment.
[0013] In some embodiments, the thermal conductivity of the adjustment section is less than the thermal conductivity of the base section.
[0014] In some embodiments, the base segment surrounds the outer circumference of the adjustment segment, and the radial inner surface of the adjustment segment is the heating surface or the radial outer surface of the base segment is the heating surface.
[0015] In some embodiments, the base segment is an annular structure, and the distance between two side surfaces of the base segment along the radial direction is 0.2 mm to 1 mm.
[0016] In some embodiments, the base segment is formed with a partition groove, and the partition groove radially penetrates two radial side surfaces of the base segment.
[0017] In some embodiments, the thermal conductivity of the base segment is less than the thermal conductivity of the adjustment segment.
[0018] In some embodiments, an air space is formed between the base segment and the adjustment segment to isolate the two.
[0019] In some embodiments, the regulating section is formed with a first air passage penetrating at least one end thereof in the axial direction; and / or,
[0020] The base segment is formed with a second air passage penetrating at least one end thereof in the axial direction.
[0021] In some embodiments, the aerosol-generating substrate is an extruded structure.
[0022] The present application provides an aerosol generating product, comprising:
[0023] An aerosol generating substrate as described in any of the above items;
[0024] The functional section is arranged at one end of the aerosol generating substrate along the axial direction, and the functional section at least includes a filtering section for filtering aerosol.
[0025] The present application also provides an electronic atomization device, including:
[0026] The aerosol generating article as described above;
[0027] A heating element is disposed toward the heating surface, and is used to heat the aerosol generating substrate to generate aerosol.
[0028] In the embodiment of the present application, the heat from the heating surface is transferred radially between the base section and the adjustment section. Since at least one parameter of the adjustment section and the base section is different, the parameters include thermal conductivity, mass, wall thickness of the medium and total cross-sectional area of the medium. Therefore, the heat transfer rates of the base section and the adjustment section are different, so that the heat transfer rate of heat from the heating surface along the radial direction changes. During the heating process, the cold end area of the aerosol generating matrix radially away from the heating surface will not be heated too quickly, so that the aerosol release rate during the puffing process tends to be consistent, thereby ensuring that the aerosol released by the aerosol generating matrix in the front and rear sections of the puffing is relatively consistent, improving the consistency of aerosol release, and ensuring a consistent effect before and after the puffing experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 This is a schematic structural diagram of a first aerosol generating substrate in one embodiment of the present application;
[0030] Figure 2 This is a schematic structural diagram of a second aerosol generating substrate in one embodiment of the present application;
[0031] Figure 3 Schematic diagram of the structure of the third aerosol generating substrate in one embodiment of the present application, wherein the bold lines schematically show the basic segment;
[0032] Figure 4 Schematic diagram of the structure of a fourth aerosol generating substrate in one embodiment of the present application;
[0033] Figure 5 Schematic diagram of the structure of the fifth aerosol generating substrate in one embodiment of the present application;
[0034] Figure 6 Schematic diagram of the structure of the sixth aerosol generating substrate in one embodiment of the present application;
[0035] Figure 7 Schematic diagram of the structure of the seventh aerosol generating substrate in one embodiment of the present application;
[0036] Figure 8 for Figure 7 A schematic structural diagram of the seventh aerosol generating matrix from another perspective is shown;
[0037] Fig. 9 Schematic diagram of the structure of an eighth aerosol generating substrate in an embodiment of the present application;
[0038] Fig.10Schematic diagram of the structure of an aerosol generating product in one embodiment of the present application;
[0039] Fig.11 for Fig.10 Cross-sectional view along the AA direction.
[0040] Description of Reference Numerals
[0041] Base section 1; partition groove 1a; second air channel 1b; outer ring portion 11; center portion 12; adjustment section 2; first air channel 2a; air separation space 10a. DETAILED DESCRIPTION
[0042] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation mode should be understood as an explanation of the purpose of this application and should not be regarded as an improper limitation on this application. In this application, a plurality includes a quantity of two and more than two. The unit "mm" is millimeter.
[0043] In the related art, if circumferential heating is used, the direction of heat transfer is radially from the periphery to the center. During the heat transfer process, the circumference of the aerosol-generating matrix gradually decreases, that is, the volume of the heated medium gradually decreases, and the mass of the heated medium gradually decreases. If the heat transfer rate is not controlled, it is easy to cause the aerosol and other effective substances in the front section of the suction to be released too quickly, the satisfaction is too strong, and the attenuation is serious in the rear section of the suction. If central heating is used, the direction of heat transfer is radially from the center to the periphery. During the heat transfer process, the circumference of the aerosol-generating matrix gradually increases, that is, the volume of the heated medium gradually increases, and the mass of the heated medium gradually increases. If the heat transfer rate is not controlled, it is easy to cause the aerosol and other effective substances in the front section of the suction to be released slowly, the taste of the first few puffs is not good, and the central area of the rear section of the suction is over-baked, causing the problem of impurities.
[0044] In view of this, please refer to Figure 1 An embodiment of the present application provides an aerosol generating substrate 10 , and the aerosol generating substrate 10 includes a base segment 1 and an adjustment segment 2 .
[0045] The base segment 1 and the adjustment segment 2 are sleeved in the radial direction. For example, in some embodiments, the base segment 1 is sleeved in the adjustment segment 2. In other embodiments, the adjustment segment 2 is sleeved in the base segment 1.
[0046] One of the radial surfaces of the base section 1 and the adjustment section 2 is a heating surface. Exemplarily, in some embodiments, one of the radial surfaces of the base section 1 is a heating surface. In other embodiments, one of the radial surfaces of the adjustment section 2 is a heating surface. The heating surface is used to face the heating element to receive heat from the heating element.
[0047] At least one parameter of the adjustment section 2 and the base section 1 is different, and the parameters include thermal conductivity, mass, wall thickness H of the medium, and the total cross-sectional area of the medium. Exemplarily, in some embodiments, one parameter of the adjustment section 2 and the base section 1 is different, for example, one of the thermal conductivity, mass, wall thickness H of the medium, and the total cross-sectional area of the medium may be different. In other embodiments, two parameters of the adjustment section 2 and the base section 1 are different, for example, two of the thermal conductivity, mass, wall thickness H of the medium, and the total cross-sectional area of the medium may be different. In some other embodiments, three parameters of the adjustment section 2 and the base section 1 are different, for example, three of the thermal conductivity, mass, wall thickness H of the medium, and the total cross-sectional area of the medium may be different. In some further embodiments, four parameters of the adjustment section 2 and the base section 1 are different, for example, all of the thermal conductivity, mass, wall thickness H of the medium, and the total cross-sectional area of the medium may be different.
[0048] Thermal conductivity, also known as thermal conductivity coefficient or thermal conductivity, refers to the amount of heat transferred by a unit temperature gradient through a unit heat conduction surface in a unit time. Thermal conductivity is a physical quantity that indicates the heat conduction capacity of a structure. The thermal conductivity of the base section 1 and the adjustment section 2 is different, which makes the heat transfer rate of the adjustment section 2 and the base section 1 different.
[0049] Exemplarily, the base segment 1 and the adjustment segment 2 may be made of different materials to achieve different thermal conductivities.
[0050] The medium refers to a physical structure that is surrounded to form a space. For example, the first air channel 2a is formed in the adjustment section 2, and the medium is surrounded to form the first air channel 2a. Figure 1 The wall thickness H of the medium refers to the thickness of the medium in the cross section with the plane perpendicular to the axial direction as the cross section. Due to the different wall thickness H of the medium, the size of the heat transfer path in the heat conduction process is different, resulting in different heat transfer rates between the adjustment section 2 and the base section 1.
[0051] The adjustment section 2 and the base section 1 have different masses, so that the content of the medium capable of releasing aerosol is different, resulting in different heat transfer rates between the adjustment section 2 and the base section 1.
[0052] The total cross-sectional area of the medium refers to the total area of the projection of all the media with the plane perpendicular to the axial direction as the cross section. The total cross-sectional area of the medium of the adjustment section 2 and the base section 1 is different. Since the heat is conducted radially, the heating areas of the adjustment section 2 and the base section 1 are different, resulting in different heat transfer rates of the adjustment section 2 and the base section 1.
[0053] In the embodiment of the present application, the heat from the heating surface is transferred radially between the base section 1 and the adjustment section 2. Since at least one parameter of the adjustment section 2 and the base section 1 is different, including the thermal conductivity, mass, the wall thickness H of the medium and the total cross-sectional area of the medium, the heat transfer rates of the base section 1 and the adjustment section 2 are different, so that the heat transfer rate of heat from the heating surface along the radial direction changes. During the heating process, the cold end area of the aerosol generating matrix 10 radially away from the heating surface will not be heated too quickly, so that the aerosol release rate during the puffing process tends to be consistent, thereby ensuring that the aerosol released by the aerosol generating matrix 10 in the front and rear sections of the puffing is relatively consistent, improving the consistency of the aerosol release, and ensuring a consistent effect before and after the puffing experience.
[0054] It should be noted that the front section of the puff refers to the period of initial use of the aerosol generating substrate 10, and the back section of the puff refers to the period of time when the aerosol generating substrate 10 is close to complete aerosol release. The front section and back section of the puff refer to the early and late stages of the use life cycle of the aerosol generating substrate 10, respectively.
[0055] Based on the thermal resistance formula, radial heat transfer resistance = radial size of the medium / (thermal conductivity*total cross-sectional area of the medium). For both peripheral heating and central heating, heat is transferred radially. By using the aerosol generating matrix 10 provided in the embodiment of the present application, the heat transfer rate can be controlled during the entire suction process (i.e., within the service life of the aerosol generating matrix 10), and the cold end of the aerosol generating matrix 10 will not be heated too quickly, thereby achieving overall release rate consistency.
[0056] It should be noted that there may be an obvious physical boundary between the base segment 1 and the adjustment segment 2. For example, when the base segment 1 and the adjustment segment 2 are made of different materials, have different wall thicknesses of the medium, and have different total cross-sectional areas of the medium, there may be an obvious physical boundary between the base segment 1 and the adjustment segment 2. When the base segment 1 and the adjustment segment 2 have different masses and have an air gap, there may also be an obvious physical boundary between the two.
[0057] There may be no obvious physical boundary between the base segment 1 and the adjustment segment 2. For example, the base segment 1 and the adjustment segment 2 may only be different in mass. If the base segment 1 and the adjustment segment 2 are connected as a whole, there may be no obvious physical boundary between the base segment 1 and the adjustment segment 2. However, this does not affect the division of the base segment 1 and the adjustment segment 2. For example, the base segment 1 and the adjustment segment 2 can be divided according to their structural shapes.
[0058] See also Fig.10 and Fig.11 The embodiment of the present application further provides an aerosol generating product, the aerosol generating product comprising the aerosol generating substrate 10 and the functional segment 20 in any embodiment of the present application.
[0059] The functional segment 20 is disposed at one end of the aerosol generating substrate 10 along the axial direction, and the functional segment 20 at least includes a filter segment 21 for filtering aerosol. The filter segment 21 is used to filter the aerosol generated by the aerosol generating substrate 10.
[0060] The aerosol generating article is used for a user to inhale the aerosol generated by the aerosol generating substrate 10. For example, the user can inhale the filtered aerosol through the filter section 21. The aerosol generated by the aerosol generating substrate 10 is transported to the filter section 21 under the action of the suction negative pressure.
[0061] The aerosol generating article is used in conjunction with an electronic atomization device having a heating element.
[0062] The electronic atomization device provided in the embodiment of the present application includes the aerosol generating product and the heating element in any embodiment of the present application, and the heating element faces the heating surface. The heating element is used to heat the aerosol generating substrate 10 to generate an aerosol. In other words, the heat of the heating element is transferred to the heating surface and then transferred radially in the aerosol generating substrate 10.
[0063] It should be noted that, in the embodiment of the present application, the aerosol generating substrate 10 is used to generate aerosol by heating. Exemplarily, the aerosol generating substrate 10 can be used to generate aerosol by heating without burning. That is, the aerosol generating substrate 10 is heated below the ignition point to generate aerosol. The aerosol generating substrate 10 does not burn during the process of generating aerosol. In some application scenarios, the aerosol generating substrate 10 can be used to generate aerosol by ignition. The aerosol generating substrate 10 of the present application is more used to generate aerosol by heating without burning.
[0064] The heating methods of the heating element include, but are not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating, etc. Among them, the heating element may be in contact with the heating surface or not. Transferring heat in the form of thermal convection means that the heating element is not in contact with the heating surface, the heating element first heats the air, and then the hot air bakes and heats the aerosol generating matrix 10. Heat conduction means that the heating element is in contact with the heating surface and conducts heat to the aerosol generating matrix 10. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol generating matrix 10 in the form of thermal conduction or thermal convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol generating matrix 10 in the form of thermal radiation. That is, the heating element can heat the aerosol generating matrix 10 in one or more of the three forms of thermal conduction, thermal convection and thermal radiation.
[0065] In some embodiments, the aerosol generating matrix 10 is an extrusion-molded structure. That is, the aerosol generating matrix 10 is an integral structure manufactured by an extrusion process. The extruded aerosol generating matrix 10 is an integral medium during use, such as when heated or after the heating stops, and is not prone to disintegration and falling.
[0066] Compared with the ordered or disordered filamentary media produced by the papermaking method, thick slurry method, etc. in the prior art, the extruded media are interconnected, and there is less air in the media, which can improve the overall thermal conductivity of the aerosol generating matrix 10. The heat transfer efficiency of different parts of the aerosol generating matrix 10 can be effectively adjusted by different parameters, thereby improving the puffing consistency.
[0067] Extrusion molding refers to a processing method in which the material is pushed forward by the screw through the action between the barrel and the screw of the extruder and is molded into an aerosol-generating matrix 10 through the outlet of the barrel.
[0068] The cross-sectional profile of the aerosol generating substrate 10 is not limited. For example, the cross-sectional profile of the aerosol generating substrate 10 is circular (see Figure 1 ), ellipse, polygon (including but not limited to triangle, square or prism, etc.), racetrack or irregular shape, etc., wherein irregular shape refers to other symmetrical or asymmetrical shapes other than the shapes listed above. The cross-sectional shape of the aerosol generating substrate 10 is other regular shapes other than irregular shapes, and the product consistency is good, which is convenient for monitoring product quality.
[0069] It should be understood that the contour shape of the cross section of the aerosol generating substrate 10 refers to the shape of the outermost edge line of the cross section of the aerosol generating substrate 10. For example, the contour shape of the cross section of the aerosol generating substrate 10 refers to the shape of the outermost edge line of the cross section formed by the base segment 1 and the adjustment segment 2.
[0070] It should be noted that the axial direction is the extension direction of the aerosol generating matrix 10. For example, the aerosol generating matrix 10 is formed by extrusion, and the axial direction is the extension direction of the aerosol generating matrix 10 during the extrusion process. The radial direction is perpendicular to the axial direction, and the outer direction refers to the direction away from the central area along the radial direction, and the inner direction is opposite to the outer direction.
[0071] See also Figure 1 , the cross-sectional profile of the aerosol-generating substrate 10 is circular. The embodiment of the present application takes the cross-sectional profile of the aerosol-generating substrate 10 as an example for illustration, that is, the aerosol-generating substrate 10 is a cylinder as a whole. The axial dimension of the aerosol-generating substrate 10 is greater than the maximum distance between two points on its cross section, such as the diameter.
[0072] It can be understood that if the cross-sectional profile of the aerosol-generating substrate 10 is circular, the aerosol-generating substrate 10 is a prism as a whole.
[0073] In one embodiment, please refer to Figures 1 to 9 , the regulating section 2 is formed with a first air channel 2a that runs through at least one end thereof in the axial direction. For example, the first air channel 2a runs through one end of the regulating section 2 in the axial direction. For another example, the first air channel 2a runs through both ends of the regulating section 2 in the axial direction. The airflow can flow axially from one end of the regulating section 2 to the other end of the regulating section 2. In this way, the first air channel 2a can collect and circulate the aerosol, unblocking the release path of the aerosol, and thus improving the extraction efficiency of the aerosol. The first air channel 2a runs through both ends of the regulating section 2 in the axial direction, and the airflow formed by the air carrying the aerosol can flow more smoothly, and the airflow flow resistance is smaller, which can significantly reduce the suction resistance during the suction process and improve the suction experience.
[0074] The number of the first air passages 2a is not limited. For example, there may be one or more first air passages 2a.
[0075] In one embodiment, please refer to Figures 4 to 9 , the base segment 1 is formed with a second air channel 1b that runs through at least one end thereof in the axial direction. For example, the second air channel 1b runs through one end of the base segment 1 in the axial direction. For another example, the second air channel 1b runs through both ends of the base segment 1 in the axial direction. The airflow can flow axially from one end of the base segment 1 to the other end of the base segment 1. In this way, the second air channel 1b can collect and circulate the aerosol, unblocking the release path of the aerosol, and thus improving the extraction efficiency of the aerosol. The second air channel 1b runs through both ends of the base segment 1 in the axial direction, and the airflow formed by the air carrying the aerosol can flow more smoothly, and the airflow flow resistance is smaller, which can significantly reduce the suction resistance during the suction process and improve the suction experience.
[0076] The number of the second air passages 1 b is not limited. For example, the second air passages 1 b may be one or more.
[0077] In one embodiment, please refer to Figures 1 to 9 The first air channel 2a and / or the second air channel 1b are linear air channels extending in a straight line. The linear air channel is easy to form and can reduce the difficulty of manufacturing. The flow resistance of the airflow in the linear air channel is relatively small.
[0078] In one embodiment, the first air channel 2a and / or the second air channel 1b are curved air channels, and at least part of the hole section of the curved air channel is in a curved shape with a curvature of not less than . The curved air channel can greatly increase the flow path of the airflow without significantly increasing the axial length, and can extend the contact time between the airflow and the hole wall of the curved air channel, thereby improving the aerosol extraction rate.
[0079] In one embodiment, the curved airway is in the shape of a spiral line. That is, the three-dimensional shape of the curved airway is in the shape of a spatial spiral line. The line connecting any point of the spiral curved airway and the starting point has an inclination angle relative to its axis. The spiral curved airway can greatly extend the flow path of the airflow, precipitate the aerosol from the medium into the curved airway, increase the flow speed of the aerosol in the adjustment section 2 or the base section 1, thereby increasing the impact force of the airflow, allowing the aerosol to be evenly mixed, improving the uniformity of the aerosol, and enhancing the user's inhalation experience.
[0080] It should be noted that micropores may exist inside the adjustment section 2 and inside the base section 1. For example, for the aerosol generating matrix 10 of the particle combination, the gaps between the particles constitute micropores. However, the first airway 2a and the second airway 1b described in the present application are different from micropores. The first airway 2a and the second airway 1b described in the present application belong to holes in the macroscopic sense, and the micropores belong to holes in the microscopic sense. The cross-sectional area and length and other dimensions of the first airway 2a and the second airway 1b are much larger than those of the micropores. The first airway 2a and the second airway 1b are mainly processed by the designed mold, such as the mouth mold. Therefore, the cross-sectional area and length and other dimensions of the first airway 2a and the second airway 1b can be changed according to the design requirements, and the size of the micropores is determined by the gaps between the particles. For example, the material used to form the aerosol generating matrix 10 is a granular material, and the aerosol generating matrix 10 formed by extrusion of the material has micropores. The cross-sectional area and length and other dimensions of the micropores are naturally formed by the extrusion process and the raw material components. The material is extruded and flows out of the die mouth to produce a certain expansion to form micropores.
[0081] In one embodiment, please refer to Figure 4 and Figure 5 The base segment 1 forms an annular placement space, the adjustment segment 2 is located in the placement space, the adjustment segment 2 is connected to the base segment 1 on both the inner and outer sides in the radial direction, and the inner or outer surface of the base segment 1 in the radial direction is the heating surface. In other words, the heat transfer process is: the part of the base segment 1 with the heating surface is transferred radially to the adjustment segment 2 and then to the cold end part of the base segment 1. Since the parameters of the adjustment segment 2 and the base segment 1 are different, the adjustment segment 2 can adjust the heat transfer rate from the part of the base segment 1 with the heating surface to the cold end part of the base segment 1, so that the aerosol release rate during the heating process tends to be consistent.
[0082] The radial inner surface or outer surface of the base segment 1 is the heating surface. Exemplarily, in some embodiments, the radial inner surface of the base segment 1 is the heating surface. A heating port may be formed in the central area of the base segment 1, and at least part of the heating element is located in the heating port. The circumferential surface of the heating port is the radial inner surface of the base segment 1, that is, the heating surface. In other embodiments, the radial outer surface of the base segment 1 is the heating surface. The heating element may surround the outer surface of the base segment 1. In other words, the heating element may be a cylindrical structure that is sleeved on the outer periphery of the base segment 1.
[0083] For example, in one embodiment, please refer to Figure 4 and Figure 5 The medium of the regulating section 2 extends radially and connects the two circumferential surfaces of the placement space along the radial direction.
[0084] In some embodiments, the cross-sectional shape of the first air duct 2a is not limited. For example, the cross-sectional shape of the first air duct 2a can be circular, polygonal (including but not limited to triangle, square or prism, etc.), elliptical, runway-shaped, fan-shaped or irregular, etc., wherein irregular refers to other symmetrical or asymmetrical shapes other than the shapes listed above.
[0085] In one embodiment, please refer to Figure 4 , the wall thickness H2 of the medium of the adjustment section 2 is less than the wall thickness H1 of the medium of the base section 1. Since the wall thickness H2 of the medium of the adjustment section 2 is less than the wall thickness H1 of the medium of the base section 1, the wall thickness H2 of the medium used for heat conduction in the adjustment section 2 is smaller, and the heat transfer rate of the adjustment section 2 is lower than the heat transfer rate of the base section 1, so that the heat transfer efficiency from the part of the base section 1 with the heating surface to the cold end part of the base section 1 is reduced, and the release consistency of the aerosol during the inhalation process is good.
[0086] In one embodiment, please refer to Figure 4 The regulating section 2 includes 12 square first air passages 2a and 4 fan-shaped first air passages 2a, and the 12 square first air passages 2a and the 4 fan-shaped first air passages 2a are evenly distributed along the circumferential direction. The heat transfer efficiency can be adjusted by adjusting the wall thickness H2 of the medium surrounding the first air passages 2a.
[0087] It should be understood that the wall thickness of the medium may refer to the wall thickness of the medium surrounding the first air channel 2a or the second air channel 1b.
[0088] In one embodiment, please refer to Figure 4 and Figure 5, the base section 1 includes an outer ring portion 11 and a central portion 12, the outer ring portion 11 surrounds the outer periphery of the central portion 12 to define a placement space together, and the wall thickness of the medium of the central portion 12 is 0.2mm to 0.25mm. Exemplarily, the wall thickness of the medium of the central portion 12 is 0.2mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm or 0.25mm, etc. Exemplarily, the medium of the adjustment section 2 extends radially and connects the outer ring portion 11 and the central portion 12. Since the material used to form the aerosol generating matrix 10 is a solid-liquid mixture, it has viscosity and is easy to adhere to the mold such as the mouth mold. If the wall thickness of the medium of the central portion 12 is less than 0.2mm or greater than 0.25mm, the manufacturing process of the aerosol generating matrix 10, such as the extrusion process, is complicated, and the outer ring portion 11, the central portion 12 and the adjustment section 2 are difficult to extrude and mold, and the yield rate is low.
[0089] In one embodiment, the total cross-sectional area of the medium of the base section 1 is greater than the total cross-sectional area of the medium of the adjustment section 2. Exemplarily, the base section 1 includes an outer ring portion 11 and a central portion 12, the outer ring portion 11 surrounds the outer circumference of the central portion 12 to jointly define a placement space, the medium of the adjustment section 2 extends radially and connects the outer ring portion 11 and the central portion 12, and the sum of the total cross-sectional area of the medium of the outer ring portion 11 and the total cross-sectional area of the medium of the central portion 12 is greater than the total cross-sectional area of the medium of the adjustment section 2.
[0090] In this embodiment, the heating area of the adjustment section 2 is smaller than the heating area of the base section 1, the medium of the adjustment section 2 has relatively fewer heat transfer channels formed by the medium used for heat conduction, and the heat transfer rate of the adjustment section 2 is lower than the heat transfer rate of the base section 1, so that the heat transfer efficiency from the part of the base section 1 with the heating surface to the cold end part of the base section 1 is reduced, and the release consistency of the aerosol during the inhalation process is good.
[0091] In one embodiment, please refer to Figure 5 The regulating section 2 includes 8 rectangular first air channels 2a and 4 fan-shaped first air channels 2a, and the 8 rectangular first air channels 2a and the 4 fan-shaped first air channels 2a are evenly distributed along the circumferential direction. By increasing the cross-sectional area of the first air channels 2a, the number of media surrounding and forming the first air channels 2a is reduced, that is, the number of heat conduction paths in the regulating section 2 is reduced, thereby reducing the total cross-sectional area of the media in the regulating section 2.
[0092] In one embodiment, the mass of the base section 1 is greater than the mass of the adjustment section 2. That is, the mass of the medium used for heat transfer in the adjustment section 2 is less than the mass of the medium in the base section 1, and the heat transfer rate of the adjustment section 2 is lower than the heat transfer rate of the base section 1, so that the heat transfer efficiency from the part of the base section 1 with the heating surface to the cold end part of the base section 1 is reduced, and the release consistency of the aerosol during the inhalation process is good.
[0093] In one embodiment, the thermal conductivity of the adjustment section 2 is less than that of the base section 1. The smaller the thermal conductivity, the lower the thermal efficiency. The thermal conductivity of the adjustment section 2 is relatively smaller, and the heat transfer rate of the adjustment section 2 is lower than the heat transfer rate of the base section 1, so that the heat transfer efficiency from the part of the base section 1 with the heating surface to the cold end part of the base section 1 is reduced, and the release consistency of the aerosol during the inhalation process is good.
[0094] In one embodiment, please refer to Figures 1 to 3 ,as well as Figures 6 to 9 , the base segment 1 surrounds the outer circumference of the adjustment segment 2, the radial inner surface of the adjustment segment 2 is the heating surface or the radial outer surface of the base segment 1 is the heating surface. Exemplarily, in some embodiments, a mounting opening is formed in the central area of the adjustment segment 2, at least part of the heating element is located in the mounting opening, and the circumferential surface of the mounting opening is the radial inner surface of the adjustment segment 2, that is, the heating surface. In other embodiments, the radial outer surface of the base segment 1 is the heating surface. The heating element may be surrounded by the outer surface of the base segment 1. In other words, the heating element may be a cylindrical structure that is sleeved on the outer circumference of the base segment 1.
[0095] In one embodiment, please refer to Figure 1 , the base segment 1 is an annular structure, and the distance L between the two radial sides of the base segment 1 is 0.2mm to 1mm. Exemplarily, the distance L between the two radial sides of the base segment 1 is 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.7mm, 0.9mm or 1mm, etc. On the one hand, the heat is conducted radially through the base segment 1, and the distance L between the two radial sides of the base segment 1 is the above-mentioned size. The path of heat conduction along the radial direction is long, which can effectively extend the conduction time of heat on the base segment 1, thereby reducing the heat transfer efficiency between the base segment 1 and the adjustment segment 2, and the release consistency of the aerosol during the suction process is good. On the other hand, both the base segment 1 and the adjustment segment 2 are extruded, and the materials constituting the base segment 1 and the adjustment segment 2 are solid-liquid mixtures with viscosity. The distance between the two radial sides of the base segment 1 is less than 0.2mm or greater than 1mm, the extrusion process is complicated, the material is easy to adhere to the mold such as the mouth mold, it is difficult to extrude and form, and the yield rate is low.
[0096] For some examples, see Figure 1 , the basic segment 1 has no second air channel 1b. That is, the number of the second air channels 1b is zero. Both radial side surfaces of the basic segment 1 are continuous surfaces. It should be understood that the basic segment 1 may have micropores without the second air channel 1b.
[0097] The base segment 1 is an annular structure, which can be a circular ring, an elliptical ring or a polygonal ring.
[0098] In one embodiment, please refer to Figure 2 and Figure 3The base segment 1 is formed with a partition groove 1a, which radially penetrates the two radial side surfaces of the base segment 1. In other words, the two radial side surfaces of the base segment 1 are discontinuous surfaces. The partition groove 1a can reduce the total cross-sectional area of the base segment 1, reduce the amount of heat received by the base segment 1, and thus reduce the heat transfer efficiency between the base segment 1 and the adjustment segment 2, and the release consistency of the aerosol during the inhalation process is good.
[0099] In some embodiments, there may be one partition groove 1a. In other embodiments, there may be multiple partition grooves 1a, and the multiple partition grooves 1a are spaced and distributed along the circumferential direction. For example, the multiple partition grooves 1a are spaced and evenly distributed along the circumferential direction.
[0100] In one embodiment, please refer to Fig. 9 , the thermal conductivity of the base segment 1 is less than that of the adjustment segment 2. The base segment 1 surrounds the outer periphery of the adjustment segment 2. The smaller the thermal conductivity of the base segment 1, the less heat the base segment 1 conducts per unit time, which reduces the heat transfer efficiency between the base segment 1 and the adjustment segment 2, and the release consistency of the aerosol during the inhalation process is good.
[0101] In one embodiment, please refer to Figures 6 to 8 , an air space 10a is formed between the base section 1 and the adjustment section 2 to separate the two. That is, the base section 1 is sleeved on the outer periphery of the adjustment section 2, and the air space 10a is formed between the radial inner peripheral surface of the base section 1 and the radial outer peripheral surface of the adjustment section 2. That is, the base section 1 and the adjustment section 2 are not in contact. Air is a poor conductor of heat, and the base section 1 and the adjustment section 2 are isolated by the air space 10a, thereby reducing the heat transfer efficiency between the base section 1 and the adjustment section 2, and the release consistency of the aerosol during the inhalation process is good.
[0102] In some other embodiments, please refer to Figure 4 , Figure 5 and Fig. 9 , the base section 1 is connected to the adjustment section 2. Exemplarily, the medium extending in the radial direction of the adjustment section 2 is connected to the base section 1.
[0103] In some embodiments, the functional section 20 may only include the filtering section 21 .
[0104] In some other embodiments, please refer to Fig.10 and Fig.11 The functional section 20 further includes a cooling section 22, which is located between the filtering section 21 and the aerosol generating matrix 10. The cooling section 22 is used to cool the aerosol before the filtering section 21 filters the aerosol. The cooling section 22 can improve the "hot mouth" phenomenon when the user inhales the aerosol.
[0105] The cooling materials used in the cooling section 22 include, but are not limited to, one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber and the like.
[0106] The filter material used in the filter section 21 includes but is not limited to one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber and the like.
[0107] The materials of the cooling section 22 and the filtering section 21 may be the same or different.
[0108] The aerosol-generating substrate 10 may be used for medical, cosmetic or other purposes.
[0109] In one embodiment, the aerosol generating substrate 10 includes plant raw materials, auxiliary raw materials, smoke generating agent raw materials, adhesive raw materials and flavor raw materials.
[0110] The plant raw material is used to generate aerosol when heated. The auxiliary raw material is used to provide a skeleton support for the plant raw material. The smoke-generating agent raw material is used to generate a large amount of smoke when heated. The adhesive raw material is used to bond the component raw materials. The fragrance raw material is used to provide a characteristic aroma. In this way, the plant raw material and the smoke-generating agent raw material can ensure the amount of aerosol generated, while the fragrance raw material can enhance the release of aroma during the suction process and enhance the user experience. The auxiliary raw material can not only improve the fluidity of the material, but also make the aerosol generating matrix 10 porous, so as to facilitate the extraction and flow of the aerosol. The adhesive raw material ensures that the plant raw material powder and the auxiliary agent etc. constitute a stable mixture to avoid a loose structure.
[0111] In one embodiment, the plant raw material is one or more combinations of powders formed by crushing tobacco raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and aromatic plants. The plant raw material is the core source of flavor. The endogenous substances in the plant raw material can produce physiological satisfaction for the user. The endogenous substances, such as alkaloids, enter the human blood and promote the pituitary gland to produce dopamine, thereby obtaining physiological satisfaction.
[0112] In one embodiment, the auxiliary agent raw material can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant raw material, and the inorganic filler also has micropores, which can increase the porosity of the aerosol generating matrix 10, thereby increasing the aerosol release rate.
[0113] The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the plant raw material powder, reduce the friction between the plant raw material powders, make the overall density of the plant raw material powder distribution more uniform, and also reduce the pressure required in the extrusion molding process and reduce the wear of the die.
[0114] The emulsifier includes one or more combinations of polyglycerol fatty acid ester, Tween-80, and polyvinyl alcohol. The emulsifier can slow down the loss of flavor substances during storage to a certain extent, increase the stability of flavor substances, and improve the sensory quality of the product.
[0115] In one embodiment, the smoke-generating agent raw material may include: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, glycerol, triethylene glycol, 1,3-butylene glycol and tetraethylene glycol); an ester of a polyhydric alcohol (such as triacetin, triethyl citrate, a mixture of diacetin esters, triethyl citrate, benzyl benzoate, glyceryl tributyrate); a monocarboxylic acid; a dicarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a mixture of diacetin esters, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate) or one or more combinations thereof.
[0116] In one embodiment, the adhesive raw material is in close contact with the component raw material interface by wetting, generating intermolecular attraction, thereby playing the role of bonding the component raw materials such as powders, liquids, etc. The adhesive raw material can be a natural plant extract, a non-ionized modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is used to bond the particles together, which is not easy to loosen. In addition, it improves the water resistance of the aerosol generating matrix 10 and is harmless to the human body.
[0117] In one embodiment, the flavor raw material is used to provide a characteristic aroma, such as a solid or liquid substance of hay aroma, roasted sweet aroma, and nicotine. The flavor raw material may include one or more combinations of tobacco, flavor plant extracts, extracts, essential oils, and absolute oils; the flavor raw material may include one or more combinations of monomer flavor substances, such as megastigmatriene, neophytadiene, geraniol, nerol, and the like.
[0118] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0119] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims
1. An aerosol generating substrate, characterized in that include: Basic segment; The adjusting section, the base section and the adjusting section are radially sleeved, one of the radial surfaces of the base section and the adjusting section is a heating surface, and at least one parameter of the adjusting section and the base section is different, and the parameter includes thermal conductivity, mass, wall thickness of the medium and total cross-sectional area of the medium.
2. The aerosol-generating substrate according to claim 1, characterized in that The base section forms an annular placement space, the adjustment section is located in the placement space, the radial inner and outer sides of the adjustment section are connected to the base section, and the radial inner surface or outer surface of the base section is a heating surface.
3. The aerosol-generating substrate according to claim 2, characterized in that The wall thickness of the medium of the adjustment section is smaller than the wall thickness of the medium of the base section.
4. The aerosol-generating substrate according to claim 3, characterized in that The base section includes an outer ring portion and a central portion, wherein the outer ring portion surrounds the outer circumference of the central portion to define the placement space together, and the wall thickness of the medium in the central portion is 0.2 mm to 0.25 mm.
5. The aerosol-generating substrate according to claim 2, characterized in that The total cross-sectional area of the medium of the base section is greater than the total cross-sectional area of the medium of the adjustment section.
6. The aerosol-generating substrate according to claim 2, characterized in that The mass of the base segment is greater than the mass of the adjustment segment.
7. The aerosol-generating substrate according to claim 2, characterized in that The thermal conductivity of the adjustment section is smaller than the thermal conductivity of the base section.
8. The aerosol-generating substrate according to claim 1, characterized in that The base section surrounds the outer circumference of the adjustment section, and the inner surface of the adjustment section in the radial direction is the heating surface or the outer surface of the base section in the radial direction is the heating surface.
9. The aerosol-generating substrate according to claim 8, characterized in that The base segment is an annular structure, and the distance between two side surfaces of the base segment along the radial direction is 0.2 mm to 1 mm.
10. The aerosol-generating substrate according to claim 8, characterized in that The base segment is formed with a partition groove, and the partition groove radially penetrates through two radial side surfaces of the base segment.
11. The aerosol-generating substrate according to claim 8, characterized in that The thermal conductivity of the base section is smaller than the thermal conductivity of the adjustment section.
12. The aerosol-generating substrate according to claim 8, characterized in that An air spacing space is formed between the base section and the adjustment section to isolate the two.
13. The aerosol-generating substrate of claim 1, wherein: The regulating section is formed with a first air passage penetrating at least one end thereof in the axial direction; and / or, The base segment is formed with a second air passage penetrating at least one end thereof in the axial direction.
14. The aerosol-generating substrate of claim 1, wherein The aerosol generating substrate is an extruded structure.
15. An aerosol generating article, characterized in that include: An aerosol-generating substrate as claimed in any one of claims 1 to 14; The functional section is arranged at one end of the aerosol generating substrate along the axial direction, and the functional section at least includes a filtering section for filtering aerosol.
16. An electronic atomization device, characterized in that: include: The aerosol generating article of claim 15; A heating element is disposed toward the heating surface, and is used to heat the aerosol generating substrate to generate aerosol.