Aerosol generating substrate and aerosol generating product

Abstract

The invention relates to the technical field of aerosol generation, and provides an aerosol generation substrate and an aerosol generation product, the aerosol generation substrate comprises a connecting medium and a plurality of medium sheets, the connecting medium extends along a first direction, and the plurality of medium sheets are arranged at intervals along the first direction and are connected with the connecting medium. The connecting medium enables the plurality of medium sheets to be connected into a whole, and two adjacent medium sheets in the first direction can be spaced from each other. The plurality of dielectric sheets are arranged at intervals along the first direction, the interval space is arranged between every two adjacent dielectric sheets in the first direction, and the dielectric sheets have larger surface areas in unit volume, so that the release area of aerosol can be increased, and the heat dissipation area in contact with air can be increased, and therefore, the heat dissipation efficiency of the aerosol can be improved. The aerosol release efficiency can be improved, the heat dissipation effect can be improved, and the aerosol temperature can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and particularly to an aerosol generation substrate and an aerosol generation article. Background Art

[0002] This section aims to provide background or context for the implementation modes of the present application. The descriptions herein are not admitted to be prior art just because they are included in this section.

[0003] The aerosol generation substrate can form an aerosol by ignition or by heating without combustion. Taking the aerosol generation substrate of heating without combustion as an example, the aerosol generation substrate is heated by an external heat source to just heat the aerosol generation substrate to a degree sufficient to emit an aerosol. The aerosol generation substrate will not burn, and the aerosol is released by heating the aerosol generation substrate during use.

[0004] In the related art, it is difficult for the aerosol generation substrate to release the aerosol in time, resulting in low aerosol release efficiency. Summary of the Invention

[0005] In view of this, embodiments of the present application are expected to provide an aerosol generation substrate and an aerosol generation article that can improve the aerosol release efficiency.

[0006] To achieve the above object, embodiments of the present application provide an aerosol generation substrate, comprising:

[0007] A connecting medium extending along a first direction;

[0008] A plurality of medium sheets spaced along the first direction and all connected to the connecting medium.

[0009] In some embodiments, the connecting medium has a columnar structure extending along the first direction, and the medium sheets extend outward from the periphery of the connecting medium.

[0010] In some embodiments, at least one of the medium sheets is formed with a first air passage, and the first air passage penetrates through two end faces of the medium sheet along the first direction.

[0011] In some embodiments, with a plane perpendicular to the first direction as the projection plane, the projection of the first air passage is linear or curved.

[0012] In some embodiments, the number of the first air passages of at least one of the medium sheets is multiple.

[0013] In some embodiments, the multiple first air passages of the medium sheet are spaced along the circumferential direction.

[0014] In some embodiments, with a plane perpendicular to the first direction as the projection plane, the projected shapes of at least two of the first air passages of the dielectric sheet are different.

[0015] In some embodiments, a part of the plurality of first air passages has a first shape, another part of the plurality of first air passages has a second shape, and the plurality of first shapes and the plurality of second shapes are alternately and spaced apart in the circumferential direction.

[0016] In some embodiments, all of the dielectric sheets are formed with at least one of the first air passages, and at least one of the first air passages of all of the dielectric sheets is aligned.

[0017] In some embodiments, the first air passage is a pore formed inside the dielectric sheet; or,

[0018] The first air passage is a gas groove formed on the circumferential surface of the dielectric sheet.

[0019] In some embodiments, the plurality of dielectric sheets are uniformly distributed or non-uniformly distributed.

[0020] In some embodiments, the connecting medium is formed with a second air passage, and the second air passage penetrates at least one end surface of the connecting medium in the first direction.

[0021] In some embodiments, with a plane perpendicular to the first direction as the cross-section, the cross-sectional area of the second air passage does not exceed 1 / 6 of the cross-sectional area of the aerosol-forming substrate.

[0022] In some embodiments, with a plane perpendicular to the first direction as the cross-section, the cross-sectional shape of the second air passage is a symmetric figure.

[0023] In some embodiments, the thickness of the dielectric sheet in the first direction is between 0.1 mm and 0.5 mm.

[0024] In some embodiments, the spacing between two adjacent dielectric sheets in the first direction is between 0.05 mm and 0.2 mm.

[0025] In some embodiments, the ratio of the size of the aerosol-forming substrate in the first direction to the thickness of the dielectric sheet in the first direction is not less than 10.

[0026] In some embodiments, with a plane perpendicular to the first direction as the projection plane, the projected shape of the aerosol-forming substrate is a rotationally symmetric figure or an axially symmetric figure.

[0027] Embodiments of the present application further provide an aerosol-generating article, comprising:

[0028] The aerosol-forming substrate according to any one of the above;

[0029] The functional section is arranged at one end of the aerosol - generating matrix along the first direction.

[0030] In the aerosol - generating matrix provided by the embodiment of the present application, the connecting medium enables multiple medium sheets to be connected into an integral whole, and a mutual interval can be maintained between two adjacent medium sheets in the first direction. Since multiple medium sheets are arranged at intervals in the first direction, there is an interval space between two adjacent medium sheets in the first direction. Compared with a structure without an interval space, the medium sheets have a larger surface area per unit volume. This can not only increase the release area of the aerosol but also increase the heat - dissipation area in contact with the air. Therefore, the aerosol release efficiency can be improved, the heat - dissipation effect can be enhanced, the temperature of the aerosol can be reduced, and the problem of "scalding the mouth" can be solved to a certain extent. On the other hand, the user inhales the aerosol in a puff - by - puff or intermittent suction manner, that is, for each puff of aerosol inhaled by the user, the suction is paused and then the next puff of aerosol is inhaled; during the intermittent time when the suction is paused, the aerosol will be temporarily stored in the interval space and then inhaled into the user's mouth when the next puff is inhaled. Therefore, the interval space can also improve the uniformity of aerosol release, thereby improving the user's suction consistency. Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram of an aerosol - generating article in an embodiment of the present application;

[0032] Figure 2 It is a schematic structural diagram of the first type of aerosol - generating matrix in an embodiment of the present application;

[0033] Figure 3 For Figure 2 It is a schematic structural diagram of the first type of aerosol - generating matrix from another perspective in

[0034] Figure 4 It is a projection view of the first type of aerosol - generating matrix with a plane perpendicular to the first direction as the projection plane;

[0035] Figure 5 It is a schematic structural diagram of the second type of aerosol - generating matrix in an embodiment of the present application;

[0036] Figure 6 For Figure 5 It is a schematic structural diagram of the second type of aerosol - generating matrix from another perspective in

[0037] Figure 7 It is a projection view of the second type of aerosol - generating matrix with a plane perpendicular to the first direction as the projection plane;

[0038] Figure 8 It is a schematic structural diagram of the third type of aerosol - generating matrix in an embodiment of the present application;

[0039] Figure 9 is Figure 8 a schematic structural view of a third aerosol - generating substrate from another perspective in

[0040] Figure 10 a projection view of the third aerosol - generating substrate with a plane perpendicular to the first direction as the projection plane;

[0041] Figure 11 a schematic structural view of a fourth aerosol - generating substrate in an embodiment of the present application;

[0042] Figure 12 is Figure 11 a schematic structural view of the fourth aerosol - generating substrate from another perspective in

[0043] Figure 13 a projection view of the fourth aerosol - generating substrate with a plane perpendicular to the first direction as the projection plane;

[0044] Figure 14 is Figure 2 a sectional view of the first aerosol - generating substrate in

[0045] Explanation of reference numerals

[0046] Aerosol - generating substrate 1; Connecting medium 11; Second air passage 11a; Medium sheet 12; First air passage 12a; Air holes 12aa; Air grooves 12ab; First shape 100; Second shape 200; Functional section 2; Wrapping layer 3. Detailed implementation manners

[0047] It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. The detailed description in the detailed implementation manners should be understood as an explanatory illustration of the purpose of the present application and should not be regarded as an improper limitation of the present application.

[0048] In the present application, "a plurality" includes two and more than two.

[0049] Please refer to Figures 2 to 13 , the aerosol - generating substrate 1 provided in the embodiment of the present application generates aerosol when heated. Exemplarily, the aerosol - generating substrate 1 can be applicable to generate aerosol by a heat - not - burn method. That is to say, the aerosol - generating substrate 1 is heated below the ignition point to generate aerosol. The aerosol - generating substrate 1 does not burn during the process of generating aerosol. In some application scenarios, the aerosol - generating substrate 1 can be applicable to generate aerosol by an ignition method. The aerosol - generating substrate 1 in the present application is more applied to generate aerosol by a heat - not - burn method.

[0050] Please continue to refer to Figures 2 to 13, the aerosol-forming substrate 1 provided by the embodiments of the present application includes a connecting medium 11 and a plurality of medium sheets 12. The connecting medium 11 extends along a first direction, and the plurality of medium sheets 12 are arranged at intervals along the first direction and are all connected to the connecting medium 11. Both the connecting medium 11 and the medium sheets 12 can generate aerosol when heated.

[0051] In the aerosol-forming substrate 1 provided by the embodiments of the present application, the connecting medium 11 connects the plurality of medium sheets 12 into a whole, and a gap can be maintained between two adjacent medium sheets 12 in the first direction. Since the plurality of medium sheets 12 are arranged at intervals along the first direction, there is a gap space between two adjacent medium sheets 12 in the first direction. Compared with a structure without a gap space, the medium sheets 12 have a larger surface area per unit volume, which can not only increase the aerosol release area but also increase the heat dissipation area in contact with the air. Therefore, the aerosol release efficiency can be improved, the heat dissipation effect can be enhanced, the temperature of the aerosol can be reduced, and the problem of "scalding the mouth" can be solved to a certain extent. On the other hand, the user inhales the aerosol in a puff-by-puff or intermittent manner, that is, the user inhales a puff of aerosol and then pauses before inhaling the next puff; during the pause between inhalations, the aerosol is temporarily stored in the gap space and is inhaled into the user's mouth during the next inhalation. Therefore, the gap space can also improve the uniformity of aerosol release, thereby improving the user's inhalation consistency.

[0052] Please refer to Figure 1 and Figure 2 , the embodiments of the present application further provide an aerosol-generating article, which includes the aerosol-forming substrate 1 and a functional section 2 according to any one of the embodiments of the present application. The functional section 2 is arranged at one end of the aerosol-forming substrate 1 along the first direction.

[0053] The functional section 2 provides at least one of the functions of aerosol aggregation, dilution, cooling, filtration, and flavor compensation.

[0054] In some embodiments, the functional section 2 includes a filtration section for filtering the aerosol.

[0055] Exemplarily, the filtration section can block substances with a target particle size and can also adjust the draw resistance. For example, the filtration section can filter large-particle-size substances such as powdery substances. The aerosol filtered by the filtration section has higher particle size consistency and a more delicate taste.

[0056] In other embodiments, the functional section 2 includes a cooling section for reducing the temperature of the aerosol. In this way, the aerosol is suitable for the user to inhale.

[0057] Exemplarily, in some embodiments, the functional section 2 may only have a filtering section. In other embodiments, the functional section 2 includes a filtering section and a cooling section. The cooling section is located between the filtering section and the aerosol generation substrate 1, and is configured to cool the aerosol before the filtering section filters the aerosol. The cooling section can further improve the phenomenon of "scalding the mouth" when the user inhales the aerosol.

[0058] In some embodiments, referring to Figure 1 and Figure 2 , the aerosol generating article includes a wrapping layer 3 that wraps around the outer periphery of the aerosol generation substrate 1 and the outer periphery of the functional section 2. Exemplarily, the wrapping layer 3 wraps around the outer peripheral surface of the aerosol generation substrate 1 and the outer peripheral surface of the filtering section. The wrapping layer 3 is configured to connect the aerosol generation substrate 1 and the functional section 2 into an integral body.

[0059] Exemplarily, the wrapping layer 3 can be a single layer, depending on the design requirements and manufacturing process of the aerosol generating article. The wrapping layer 3 can be two or more layers.

[0060] The aerosol generating article is configured for a user to inhale the aerosol generated by the aerosol generation substrate 1. Exemplarily, one end of the aerosol generating article in the first direction faces the user, and when the user inhales, a suction negative pressure is generated. The aerosol generated by the aerosol generation substrate 1 flows through the functional section 2 under the action of the suction negative pressure and is then delivered to the user. That is to say, the functional section 2 is on the near-lip side of the aerosol generation substrate 1 in the first direction.

[0061] It should be noted that the near-lip side is the end close to the user's lips in the first direction, and the circumferential direction is the direction around the straight line extending in the first direction.

[0062] The aerosol generating article can be used in cooperation with an aerosol generating device having a heating element.

[0063] The aerosol generating device provided in the embodiments of the present application is used for the aerosol generating article in any one of the embodiments of the present application. The aerosol generating device includes a heating element configured to heat the aerosol generation substrate 1 to generate aerosol.

[0064] The heat generation methods of the heating element include, but are not limited to, resistive heating, electromagnetic heating, infrared heating, microwave heating, or laser heating, etc. The heat generated by the heating element can be transferred to the aerosol generation substrate 1 in forms such as heat convection, heat conduction, or heat radiation. Transferring heat in the form of heat convection means that the heating element does not contact the aerosol generation substrate 1. The heating element first heats the air, and then the hot air bakes and heats the aerosol generation substrate 1. Heat conduction means that the heating element contacts the aerosol generation substrate 1 or the wrapping layer 3 that wraps the aerosol generation substrate 1 and conducts heat to the aerosol generation substrate 1. Exemplarily, resistive and electromagnetic heating mainly transfer heat to the aerosol generation substrate 1 in the form of heat conduction or heat convection. Infrared heating, microwave heating, or laser heating mainly transfer heat to the aerosol generation substrate 1 in the form of heat radiation. The heating element can heat the aerosol generation substrate 1 in one or more of the three forms of heat conduction, heat convection, and heat radiation.

[0065] The heating methods of the heating element include central heating, peripheral heating, and / or bottom heating. The central heating method means that the heating element is inserted inside the aerosol generation substrate 1 to bake and heat the aerosol generation substrate 1 from the inside out. The peripheral heating method means that the heating element is arranged on the outer periphery of the aerosol generation substrate 1 to bake and heat the aerosol generation substrate 1 from the outside in. The bottom heating method means that the heating element is located below the aerosol generation article. The heating element first heats the air, and then the hot air bakes and heats the aerosol generation substrate 1 from bottom to top.

[0066] Exemplarily, the aerosol generation device is a portable aerosol generation device. For example, the aerosol generation device can be a handheld aerosol generation device. The contour shape of the aerosol generation device can be generally elongated. In this way, it is convenient for the user to hold the aerosol generation device by hand.

[0067] In one embodiment, please refer to Figure 3 、 Figure 6 、 Figure 9 、 Figure 12 and Figure 14 , the connecting medium 11 has a columnar structure extending in the first direction. The medium sheet 12 extends outward from the periphery of the connecting medium 11. The medium sheet 12 surrounds the columnar connecting medium 11, and there is an interval between two adjacent medium sheets 12 in the first direction. In this way, the medium sheet 12 is firmly connected to the connecting medium 11, and the medium sheet 12 has a larger surface area per unit volume, which can increase the aerosol release area, thereby improving the aerosol release efficiency. In addition, it can also increase the heat dissipation area in contact with the air, improve the heat dissipation effect, reduce the temperature of the aerosol, and solve the problem of "scalding the mouth" to a certain extent.

[0068] Exemplarily, in one embodiment, with a plane perpendicular to the first direction as the projection plane, the projection profile shape of the aerosol-generating substrate 1 is circular (please refer to Figure 4 , Figure 7 , Figure 10 and Figure 13 ), oval or polygonal. The polygon includes but is not limited to square, rectangle, pentagon, hexagon or octagon, etc. That is to say, the aerosol-generating substrate 1 can be in the shape of a cylinder, a cuboid or a prism, etc.

[0069] It should be noted that in this application, with a plane perpendicular to the first direction as the projection plane, the projection profile shape of the aerosol-generating substrate 1 refers to the outer contour shape of the projection of the aerosol-generating substrate 1. For example, the projection profile shape of the aerosol-generating substrate 1 refers to the outer contour shape of the projection jointly formed by the connecting medium 11 and the medium sheet 12. Taking the example that multiple medium sheets 12 are inserted into the connecting medium 11, the projection profile shape of the aerosol-generating substrate 1 refers to the outer contour shape formed by enclosing the outer sides of the medium sheets 12. More specifically, taking the Figure 4 shown projection profile shape of the aerosol-generating substrate 1 as an example, although the outer edge of its projection has a missing corner, its outer contour shape is still the circular shape described in this application.

[0070] In the embodiment of this application, the first direction is the direction in which the aerosol-generating article is inserted into and removed from the aerosol-generating device. The length of the aerosol-generating substrate 1 along the first direction can be longer, shorter or the same as the lengths in other directions.

[0071] For example, when the external shape of the aerosol-generating substrate 1 is cylindrical, the first direction is consistent with the axial direction of the cylindrical aerosol-generating substrate 1. It should be noted that even if the axial length of the aerosol-generating substrate 1 is less than its diameter, the first direction of the aerosol-generating substrate 1 is still the axial direction. For another example, when the external shape of the aerosol-generating substrate 1 is a cuboid, the first direction is still the direction in which the aerosol-generating article is inserted into and removed from the aerosol-generating device, and the first direction of the aerosol-generating substrate 1 can be any one of the length, width and height of the cuboid.

[0072] In one embodiment, please refer to Figures 2 to 13 . At least one medium sheet 12 is formed with a first air passage 12a, and the first air passage 12a penetrates through the two end faces of the medium sheet 12 along the first direction. The spaced space between two adjacent medium sheets 12 communicates with the first air passage 12a. The aerosol released by the medium sheet 12 can enter the first air passage 12a and the spaced space. During the process of the user sucking the aerosol, in the way of puff-by-puff suction, that is, intermittent suction, during the suction interval, the aerosol can be temporarily stored in the spaced space. During suction, the aerosol in the spaced space enters the first air passage 12a and flows along the first direction, reducing the suction resistance and improving the extraction efficiency of the aerosol.

[0073] In one embodiment, referring to Figures 2 to 13 , with a plane perpendicular to the first direction as the projection plane, the projection of the first air passage 12a is linear or curved. The linear first air passage 12a (refer to Figure 4 ) has a simple shape and is easy to manufacture. The curved first air passage 12a (refer to Figure 11 ) has a relatively long length within the limited area of the medium sheet 12, enabling the medium sheet 12 to release aerosol faster.

[0074] Exemplarily, in one embodiment, referring to Figures 4 to 10 , with a plane perpendicular to the first direction as the projection plane, the projection shape of the medium sheet 12 is circular, and the linear first air passage 12a extends radially.

[0075] The specific shape of the curve is not limited. Exemplarily, in one embodiment, referring to Figure 11 and Figure 13 , the curve can be arc-shaped or snake-shaped, etc.

[0076] It should be noted that the projection of the first air passage 12a being linear or curved means that: with a plane perpendicular to the first direction as the projection plane, the center line of the projection of the first air passage 12a presents a straight line or a curve.

[0077] In one embodiment, referring to Figures 2 to 13 , the number of the first air passages 12a of at least one medium sheet 12 is multiple. For example, it can be that only one medium sheet 12 has multiple first air passages 12a. Or, for another example, two or more medium sheets 12 have multiple first air passages 12a. The multiple first air passages 12a further improve the extraction efficiency of the aerosol.

[0078] In one embodiment, referring to Figures 2 to 13 , the multiple first air passages 12a of the medium sheet 12 are arranged at intervals in the circumferential direction. In this way, the medium sheet 12 can release aerosol relatively uniformly in the circumferential direction.

[0079] In one embodiment, referring to Figures 11 to 13, taking the plane perpendicular to the first direction as the projection plane, the projection shapes of at least two first air channels 12a of the dielectric sheet 12 are different. For example, the projection of at least one first air channel 12a of the dielectric sheet 12 is in a straight line shape, and the projection of at least one first air channel 12a of the dielectric sheet 12 is in an arc shape. Since the aerosol generating device has a portability requirement of being held by a user, the size of the aerosol generating substrate 1 used in conjunction with the aerosol generating device is limited, and the projection shapes of at least two first air channels 12a of the dielectric sheet 12 are different. When the size of the aerosol generating substrate 1 is limited, the projection shapes of each first air channel 12a can be flexibly designed, which is not only convenient for adjusting the flow resistance of the aerosol, that is, adjusting the suction resistance when the user draws, but also convenient for adjusting the medium mass distribution at different positions of the dielectric sheet 12, thereby improving the heating rate and heating uniformity, and reducing the situation of burning caused by insufficient heating or excessive heating.

[0080] In one embodiment, please refer to Figure 13 , a portion of the plurality of first air channels 12a is in a first shape 100, another portion of the plurality of first air channels 12a is in a second shape 200, and the plurality of first shapes 100 and the plurality of second shapes 200 are alternately spaced and distributed along the circumferential direction. That is, a second shape 200 is arranged between two first shapes 100 adjacent in the circumferential direction. By properly arranging the first air channels 12a of different projected shapes, the medium mass distribution of the aerosol generating substrate 1 is controlled.

[0081] For example, in one embodiment, please refer to Figure 13 The first shape 100 is a straight line, the second shape 200 is an arc shape, and the four straight line first air passages 12a and the four arc-shaped second air passages 11a are alternately spaced and distributed along the circumferential direction.

[0082] It can be understood that, taking the plane perpendicular to the first direction as the projection plane, the projection shape of the first airway 12a includes but is not limited to regular shapes such as circle, ellipse, oval, polygon or fan, and the projection shape of the first airway 12a can also be an irregular shape.

[0083] In one embodiment, the number of the first air channels 12a of the medium sheet 12 is 2 to 8. Preferably, the number of the first air channels 12a is 3 to 6. Exemplarily, the number of the first air channels 12a is 2, 3, 5, 6, 7 or 8, etc. If there is no first air channel 12a, the inhalation resistance will increase, affecting the suction experience; if the number of air channels is too large, the inhalation resistance will be too small, and the overall medium quality of the aerosol generating matrix 1 will be reduced, and the suction consistency will decrease. The first air channels 12a are 2 to 8, which can take into account both the quality of the medium sheet 12 and the airflow rate.

[0084] In one embodiment, please refer to Figures 2 to 13All the medium sheets 12 are formed with at least one first air channel 12a, and at least one first air channel 12a of all the medium sheets 12 is aligned. In this way, the aerosol can be delivered more smoothly and orderly along the first direction through the first air channel 12a, and the flow resistance of the aerosol between the medium sheets 12 is smaller and the controllability is good, which can effectively improve the aerosol extraction efficiency and enhance the inhalation experience.

[0085] Alignment of at least the first air channels 12 a of all the dielectric sheets 12 means that, with a plane perpendicular to the first direction as a projection plane, at least a portion of at least one first air channel 12 a of all the dielectric sheets 12 overlaps.

[0086] In one embodiment, all dielectric sheets 12 are formed with a first air channel 12 a , and taking a plane perpendicular to the first direction as a projection surface, the projections of the first air channels 12 a of all dielectric sheets 12 at least partially overlap.

[0087] In one embodiment, please refer to Figures 2 to 13 , the number of first air passages 12a of all dielectric sheets 12 is equal, and the first air passages 12a of all dielectric sheets 12 are aligned and connected one by one. Exemplarily, the projection shapes of the first air passages 12a of all dielectric sheets 12 are the same and the projection areas are equal, and the projections of the first air passages 12a of all dielectric sheets 12 correspond one by one and completely overlap, i.e., coincide. In this way, the airflow of the first air passages 12a of the dielectric sheet 12 on the far lip side can directly enter the first air passages 12a of the dielectric sheet 12 on the near lip side that are aligned and connected, and the airflow loss is small.

[0088] It should be understood that the far-lip side refers to a side away from the user's lips along the first direction, and the near-lip side and the far-lip side are two sides opposite to the first direction.

[0089] For example, see Figure 4 All dielectric sheets 12 are formed with three first air channels 12 a , and the projection plane perpendicular to the first direction is taken as the projection plane, and the projections of the three first air channels 12 a of all dielectric sheets 12 correspond to each other and overlap.

[0090] The arrangement of the plurality of first air channels 12a of the dielectric sheet 12 is not limited. For example, the plurality of first air channels 12a of the dielectric sheet 12 may be arranged along a straight line, along a curve, in a two-dimensional matrix, or in concentric circles.

[0091] In one embodiment, please refer to Figures 8 to 10 The first air channel 12 a is an air hole 12 aa formed inside the dielectric sheet 12 .

[0092] In one embodiment, please refer to Figures 4 to 7, the first air passage 12a is a gas groove 12ab formed on the circumferential surface of the medium sheet 12. The gas groove 12ab is a groove-shaped structure that opens toward the radially outer side. The gas groove 12ab can reduce the flow rate of the first air passage 12a located at the center of the medium sheet 12, so that the aerosol generation matrix 1 reaches a slow release during the heating process, and has the effects of improving the extraction of active ingredients in the edge part of the medium sheet 12 and improving the uniformity during the suction process.

[0093] In one embodiment, please refer to Figures 2 to 13 , a plurality of medium sheets 12 are evenly distributed. Even distribution means that a plurality of identical medium sheets 12 are repeatedly arranged at equal intervals along the first direction. That is to say, all physical parameters of all medium sheets 12 are the same, and all medium sheets 12 are arranged at equal intervals along the first direction, where the physical parameters include the number, size, shape and position of the first air passage 12a of the medium sheet 12, as well as the thickness of the medium sheet 12 and the contour shape of the medium sheet 12. In this way, the aerosol generation matrix 1 can be adapted to central heating or peripheral heating, achieving a more uniform and stable suction effect, improving the suction consistency, and being more convenient to manufacture.

[0094] In one embodiment, a plurality of medium sheets 12 are unevenly distributed. Uneven distribution means that at least one of the physical parameters of the medium sheet 12 and the distance between two adjacent medium sheets 12 along the first direction is different. That is to say, at least one physical parameter of at least two medium sheets 12 is different, or at least two medium sheets 12 are arranged non-equidistantly along the first direction. Exemplarily, in one embodiment, at least one physical parameter of at least two medium sheets 12 is different, while all medium sheets 12 are arranged at equal intervals. In another embodiment, all physical parameters of all medium sheets 12 are the same, while all medium sheets 12 are arranged non-equidistantly. In yet another embodiment, at least one physical parameter of at least two medium sheets 12 is different, and all medium sheets 12 are arranged non-equidistantly. In this way, the aerosol generation matrix 1 can be adapted to bottom heating, achieving a more uniform and stable suction effect, and can also achieve differential release of aerosol between puffs, enriching the suction taste.

[0095] In one embodiment, please refer to Figures 2 to 13 , the connecting medium 11 is formed with a second air passage 11a, and the second air passage 11a penetrates at least one end face of the connecting medium 11 along the first direction. The second air passage 11a can play a role in collecting and guiding the aerosol.

[0096] In some embodiments, a heating element can be inserted into the second air passage 11a. The heating element can generate heat to heat the aerosol generation matrix 1. In this way, the aerosol generation matrix 1 can be baked and heated from the inside to the outside.

[0097] In one embodiment, the number of air channels of the aerosol generating substrate 1 is 1 to 10. Preferably, the number of air channels is 2 to 6. Exemplarily, the number of air channels of the aerosol generating substrate 1 is 1, 2, 5, 6, 8 or 10, etc. If there is no air channel, the inhalation resistance will increase, affecting the inhalation experience; if the number of air channels is greater than 10, the inhalation resistance will be too small, and the overall medium quality of the aerosol generating substrate 1 will be reduced, and the inhalation consistency will decrease.

[0098] It should be understood that the number of air channels of the aerosol generating substrate 1 is the sum of the first air channel 12a and the second air channel 11a. For example, the number of air channels of the aerosol generating substrate 1 is 1, which may be formed with one first air channel 12a and no second air channel 11a; or may be formed with one second air channel 11a and no first air channel 12a.

[0099] In one embodiment, taking the plane perpendicular to the first direction as the cross section, the cross-sectional area S1 of the second air channel 11a does not exceed 1 / 6 of the cross-sectional area S2 of the aerosol generating matrix 1. Taking the case where a plurality of dielectric sheets 12 are inserted through the connecting medium 11 as an example, the second air channel 11a is roughly located in the central area of ​​the aerosol generating matrix 1. During the suction process, the size of the cross-sectional area S1 of the second air channel 11a located in the central area has a greater influence on the suction resistance and the amount of aerosol, and the cross-sectional area S1 of the second air channel 11a is too large, which may easily lead to the weakening of the support of the connecting medium 11. Therefore, the ratio of the cross-sectional area S1 of the second air channel 11a to the cross-sectional area S2 of the aerosol generating matrix 1 is not greater than 1:6, that is, S1 / S2≤1 / 6. In this way, the cross-sectional area S1 of the second air channel 11a is moderate, the suction resistance of the aerosol generating matrix 1 is within an appropriate range, the suction experience is good, and the connecting medium 11 can stably support the dielectric sheet 12.

[0100] It should be noted that the cross-sectional area S2 of the aerosol generating substrate 1 includes the areas of the first air channel 12 a , the second air channel 11 a and the medium sheet 12 .

[0101] It can be understood that, with the plane perpendicular to the first direction as the cross-section, the cross-sectional shape of the second air duct 11a includes but is not limited to regular shapes such as circle, ellipse, oval, polygon, fan, etc., and the cross-sectional shape of the second air duct 11a can also be an irregular shape.

[0102] In one embodiment, please refer to Figures 2 to 13 , with the plane perpendicular to the first direction as the cross section, the cross-sectional shape of the second air channel 11a is a symmetrical figure. Symmetrical figures include but are not limited to axially symmetrical figures or rotationally symmetrical figures (such as centrally symmetrical figures), etc. Exemplarily, the cross-sectional shape of the second air channel 11a can be circular, quadrilateral or hexagonal, etc. In this way, the second air channel 11a is easily formed and the yield rate is improved.

[0103] In one embodiment, please refer to Figure 9 , the thickness H1 of the dielectric sheet 12 in the first direction is between 0.1 mm and 0.5 mm. Exemplarily, the thickness H1 of the dielectric sheet 12 in the first direction is 0.1 mm, 0.15 mm, 0.2 mm, 0.3 mm, or 0.5 mm, etc. The thickness of the dielectric sheet 12 is moderate, taking into account both the heat transfer rate and the effective heat dissipation area.

[0104] In one embodiment, please refer to Figure 9 , the distance L1 between two adjacent dielectric sheets 12 in the first direction is between 0.05 mm and 0.2 mm. Exemplarily, the distance L1 between two adjacent dielectric sheets 12 in the first direction is 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.17 mm, or 0.2 mm, etc. If the distance between two adjacent dielectric sheets 12 in the first direction is too large, it is easy to block the rapid flow of aerosol in the first direction, resulting in a decrease in the amount of aerosol during suction; if the distance between two adjacent dielectric sheets 12 in the first direction is too small, it is not conducive to temporarily storing aerosol and heat dissipation; the distance L1 between two adjacent dielectric sheets 12 in the first direction is between 0.05 mm and 0.2 mm, which can take into account both the amount of aerosol during suction and the heat dissipation requirements.

[0105] In one embodiment, please refer to Figure 9 , the ratio of the size H2 of the aerosol generation substrate 1 in the first direction to the thickness H1 of the dielectric sheet 12 in the first direction is not less than 10. That is to say, H2:H1≥10. In this way, the dielectric sheet 12 has a large effective heat dissipation area and maintains a good heat dissipation effect.

[0106] In one embodiment, please refer to Figure 4 , Figure 7 , Figures 10 to 13 , taking the plane perpendicular to the first direction as the projection plane, the projection shape of the aerosol generation substrate 1 is a rotationally symmetric figure or an axisymmetric figure. With such a design, during the process of heating the aerosol generation substrate 1 by the heating element, the thermal utilization rate of the aerosol generation substrate 1 can be improved, and at the same time, the heating can be more consistent and more uniform, improving the aerosol release consistency.

[0107] In one embodiment, the aerosol generation substrate 1 is an integral structure.

[0108] Exemplarily, the aerosol generation substrate 1 can be an integrally formed structure made by processes such as extrusion, injection molding, die casting, 3D printing, or cold heading. In this way, during the use of the aerosol generation substrate 1, such as during heating and suction or after stopping heating, it is an integral medium and is not prone to problems such as disintegration and falling off.

[0109] Extrusion molding refers to a processing method in which materials are pushed by a screw towards the discharge port through the interaction between the barrel and the screw of an extrusion device, and an aerosol-generating substrate 1 with a preset cross-sectional shape is formed through an extrusion die such as a die head.

[0110] In one embodiment, micropores may exist inside the aerosol-generating substrate 1. Exemplarily, in one embodiment, the aerosol-generating substrate 1 is a particle aggregate. In other words, both the medium sheet 12 and the connecting medium 11 are formed by binding particles. Micropores are formed in both the medium sheet 12 and the connecting medium 11. The gaps between the particles of the particle aggregate constitute the micropores, and at least some of the micropores communicate with each other to form microchannels. For example, dimensions such as the cross-sectional area and length of the microchannels are naturally formed by the material components, and a certain expansion of the material components can form the microchannels. The aerosol can flow through the microchannels. In this way, the micropores can not only increase the surface area of the aerosol-generating substrate 1, facilitate heat transfer, and improve the heating efficiency, but also facilitate the flow of the aerosol.

[0111] It should be noted that the first airway 12a and the second airway 11a described in this application are different from the micropores, and the micropores are all disordered. That is to say, the micropores are randomly generated. Disorder means that it is difficult to be generated orderly according to the design. The first airway 12a and the second airway 11a are both orderly, which means that they are mainly formed by design and processing and are predictable. The first airway 12a and the second airway 11a described in this application belong to pores in the macroscopic sense, and the micropores belong to pores in the microscopic sense. The cross-sectional area of the flow-through section of the first airway 12a and the second airway 11a, as well as dimensions such as the length of the first airway 12a and the second airway 11a, are much larger than those of the micropores. The first airway 12a and the second airway 11a are mainly formed by design and processing, for example, by processing with a die head. Therefore, dimensions such as the cross-sectional area and length of the first airway 12a and the second airway 11a can be changed according to the design requirements, while the dimensions of the micropores are determined by the gaps between the particles. For example, when the material is granular material, the aerosol-generating substrate 1 formed by extrusion molding of the material has micropores, and dimensions such as the cross-sectional area and length of the micropores are naturally formed by the extrusion process and the material components, and a certain expansion occurs after the material flows out of the die orifice to form the micropores.

[0112] The cross-sectional area of the flow-through section refers to the section taken perpendicular to the streamline cluster of the fluid, i.e., the air flow.

[0113] In some embodiments, the aerosol - generating substrate 1 has micro - channels, a first airway 12a, and a second airway 11a, and both the first airway 12a and the second airway 11a communicate with the micro - channels. The aerosol - generating substrate 1 releases aerosol upon heating. The aerosol is collected into the first airway 12a and the second airway 11a through the micro - channels. The aerosol released by the medium (i.e., the materials on the inner surfaces of the first airway 12a and the second airway 11a) exposed to the first airway 12a and the second airway 11a can be directly released into the first airway 12a and the second airway 11a. The aerosol between each first airway 12a and / or between the first airway 12a and the second airway 11a can also flow through the micro - channels to each other and is transported to the near - lip side, i.e., one end where the functional section 2 is located, under the action of the suction negative pressure.

[0114] In one embodiment, the aerosol - generating substrate 1 includes a plant raw material, an auxiliary raw material, a fuming agent raw material, an adhesive raw material, and a fragrance raw material.

[0115] The plant raw material is used to generate aerosol when heated. The auxiliary raw material is used to provide a framework support for the plant raw material. The fuming 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 characteristic aroma. In this way, the plant raw material and the fuming agent raw material can ensure the aerosol generation amount, while the fragrance raw material can enhance the release of aroma during the suction process and improve the user experience. The auxiliary raw material can not only improve the fluidity of the mixed material but also make the aerosol - generating substrate 1 have a porous structure to facilitate the extraction and flow of the aerosol. The adhesive raw material ensures that the plant raw material powder and the auxiliary agent form a stable mixture and avoid a loose structure.

[0116] In one embodiment, the plant raw material is one or a combination of powders formed by crushing tobacco leaf raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, fragrant plants, etc. The plant raw material is the core source of fragrance. The endogenous substances in the plant raw material can give users a physiological sense of satisfaction. Endogenous substances such as alkaloids enter the human blood and promote the pituitary gland to produce dopamine, thus obtaining a physiological sense of satisfaction.

[0117] In one embodiment, the auxiliary raw material can be one or a combination of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic fillers include one or a combination of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder, and diatomaceous earth. The inorganic fillers can provide a framework support for the plant raw material. At the same time, the inorganic fillers also have micropores, which can increase the porosity of the aerosol - generating substrate 1, thereby increasing the aerosol release rate.

[0118] 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 distribution of the plant raw material powders more uniform, and also reduce the pressure required in the extrusion molding process and reduce the wear of the die.

[0119] The emulsifier includes one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. To a certain extent, the emulsifier can slow down the loss of flavor substances during storage, increase the stability of flavor substances, and improve the sensory quality of the product.

[0120] In one embodiment, the smoke agent raw materials can include: monohydric alcohols (such as menthol); polyhydric alcohols (such as propylene glycol, glycerol, triethylene glycol, 1,3-butanediol, and tetraethylene glycol); esters of polyhydric alcohols (such as glyceryl triacetate, triethyl citrate, a mixture of diacetin, triethyl citrate, benzyl benzoate, tributyrin); monocarboxylic acids; dicarboxylic acids; polycarboxylic acids (such as lauric acid, myristic acid) or aliphatic esters of polycarboxylic acids (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a mixture of diacetin, diethyl octanedioate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, ethyl laurate) or one or more combinations thereof.

[0121] In one embodiment, the binder raw materials come into close contact by wetting the interface with the component raw materials, generating intermolecular attraction, thereby playing a role in binding component raw materials such as powders and liquids. The binder raw materials can be natural plant extracts, non-ionized modified viscous polysaccharides, including one or more combinations of tamarind polysaccharide, guar gum, and modified cellulose (such as carboxymethyl cellulose). The binder is used to bond the particles together and is not easy to loosen. In addition, it improves the water resistance of the aerosol generation matrix 1 and is harmless to the human body.

[0122] In one embodiment, the flavor raw materials are used to provide characteristic aromas, such as solid or liquid substances with hay-like aroma, roasted sweet aroma, and nicotine. The flavor raw materials can include one or more combinations of tobacco, flavor plant extracts, extracts, essential oils, and absolutes; the flavor raw materials can include monomer flavor substances, such as one or more combinations of megastigmatrienone, neophytadiene, geraniol, and nerol.

[0123] In the description of the present application, the descriptions referring to terms such as "in one embodiment", "in some embodiments", "in other embodiments", "in still other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in connection 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 expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine the different embodiments or examples described in the present application and the features of different embodiments or examples.

[0124] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are all included within the protection scope of the present application.

Claims

1. An aerosol - generating substrate, characterized in that, Comprising: A connecting medium extending along a first direction; A plurality of medium sheets spaced apart along the first direction and all connected to the connecting medium.

2. The aerosol generating substrate according to claim 1, characterized in that, The connecting medium has a columnar structure extending along the first direction, and the medium sheets extend outward from the periphery of the connecting medium.

3. The aerosol - generating substrate according to claim 1, wherein At least one of the medium sheets is formed with a first air passage, and the first air passage penetrates through two end faces of the medium sheet along the first direction.

4. The aerosol-generating substrate according to claim 3, characterized in that, Taking a plane perpendicular to the first direction as a projection plane, the projection of the first air passage is linear or curved.

5. The aerosol - generating substrate according to claim 3, characterized in that, The number of the first air passages of at least one of the medium sheets is plural.

6. The aerosol-generating substrate according to claim 5, characterized in that, The plurality of first air passages of the medium sheet are spaced apart circumferentially.

7. The aerosol - generating substrate according to claim 5, characterized in that, Taking a plane perpendicular to the first direction as a projection plane, the projection shapes of at least two of the first air passages of the medium sheet are different.

8. The aerosol-generating substrate according to claim 7, wherein, A part of the plurality of first air passages has a first shape, another part of the plurality of first air passages has a second shape, and the plurality of first shapes and the plurality of second shapes are alternately spaced apart circumferentially.

9. The aerosol - generating substrate according to claim 3, characterized in that, All the medium sheets are formed with at least one of the first air passages, and at least one of the first air passages of all the medium sheets is aligned.

10. The aerosol-generating substrate according to claim 3, characterized in that, The first air passage is a pore formed inside the medium sheet; or, The first air passage is a gas groove formed on the circumferential surface of the medium sheet.

11. The aerosol generating substrate according to claim 1, wherein, The plurality of medium sheets are uniformly distributed or non-uniformly distributed.

12. The aerosol-generating substrate according to claim 1, characterized in that, The connecting medium is formed with a second air passage, and the second air passage penetrates through at least one end face of the connecting medium along the first direction.

13. The aerosol-generating substrate according to claim 12, wherein, Taking a plane perpendicular to the first direction as a cross-section, the cross-sectional area of the second air passage does not exceed 1 / 6 of the cross-sectional area of the aerosol generating substrate.

14. The aerosol - generating substrate according to claim 12, wherein, Taking a plane perpendicular to the first direction as a cross-section, the cross-sectional shape of the second air passage is a symmetric figure.

15. The aerosol - generating substrate according to claim 1, wherein, The thickness of the medium sheet along the first direction is between 0.1 mm and 0.5 mm.

16. The aerosol-generating substrate according to claim 1, wherein The distance between two adjacent medium sheets in the first direction is between 0.05 mm and 0.2 mm.

17. The aerosol - generating substrate according to claim 1, characterized in that, The ratio of the size of the aerosol generating substrate along the first direction to the thickness of the medium sheet along the first direction is not less than 10.

18. The aerosol - generating substrate according to any one of claims 1 to 17, characterized in that, Taking a plane perpendicular to the first direction as a projection plane, the projection shape of the aerosol generating substrate is a rotationally symmetric figure or an axially symmetric figure.

19. An aerosol-generating article, characterized in that, Comprising: The aerosol generating substrate according to any one of claims 1 to 18; A functional section provided at one end of the aerosol generating substrate along the first direction.

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