Aerosol-generating article

Abstract

The utility model discloses an aerosol generating product. The aerosol generating product comprises a first end and a second end, comprising a tubular shell, a matrix section and a heating piece, the substrate section is arranged in the shell; the heating element comprises a heating element, the heating element comprises a first heating element, and the first heating element is transversely arranged and attached to the end face, close to the second end, of the substrate section; the heating element further comprises at least one second heating element, wherein the second heating element and the first heating element are arranged in the length direction of the shell in a spaced mode, and the second heating element is transversely arranged in the substrate section. The first heating element is transversely arranged so that the whole end face of the substrate section can be directly heated, the first heating element and the second heating element can heat the substrate section from different layer sections of the substrate section, heating is more uniform, and the heating effect is good.

Description

Technical Field

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

[0002] Since the aerosol generation article that does not burn upon heating adopts a non-combustion heating method, it avoids the generation of fly ash, harmful flue gas, etc. generated by the combustion of traditional cigarettes, and is an important development direction for the future tobacco industry.

[0003] In the existing aerosol generation articles of this type, there are various heating methods. For example, a central heating method is adopted, in which a heating element is inserted into the matrix section of the aerosol generation article, and the heating element generates heat to heat the aerosol-forming material of the aerosol generation article. After the aerosol-forming material is heated, aerosol is generated for the user to inhale. However, since the heating element is located at the central position of the matrix section, the heat transfer diffuses from the center to the periphery, the temperature at the center is higher than that at the periphery, the temperature of the aerosol-forming material at the periphery is insufficient, and the heating element generally has a temperature decrease in the length direction. Therefore, it cannot ensure that there is sufficient heat in the entire matrix section up and down, and the temperature of some layers may be insufficient to generate aerosol, resulting in a poor overall aerosol generation effect. Summary of the Utility Model

[0004] The present application provides an aerosol generation article for solving the problem that the temperature of the aerosol-forming material at the periphery and some layers of the matrix section in the central heating method is insufficient and the aerosol generation effect is poor.

[0005] In one embodiment, an aerosol generation article is provided, including a tubular housing, a matrix section, and a heating member. The housing has opposite first and second ends; the matrix section is disposed in the housing; the heating member includes a heating element, and the heating element includes a first heating element which is horizontally disposed and attached to the end face of the matrix section close to the second end; the heating element further includes at least one second heating element spaced from the first heating element in the length direction of the housing, and the second heating element is horizontally disposed in the matrix section.

[0006] In one embodiment, there are a plurality of the second heating elements, and the plurality of second heating elements are spaced from each other in the length direction of the housing.

[0007] In one embodiment, there is a gap between the second heating element and the inner wall of the housing; or, the second heating element is provided with a channel communicating the side close to the first end and the side close to the second end thereof.

[0008] In one embodiment, the matrix segment includes particulate fumed material; there is a gap between the second heating element and the inner wall of the housing, and the size of the fumed material is configured to pass through the gap; alternatively, the second heating element is provided with a through hole axially disposed along the housing, and the size of the fumed material is configured to pass through the through hole; alternatively, there is a gap between the second heating element and the inner wall of the housing and the second heating element is provided with a through hole axially disposed along the housing, and the size of the fumed material is configured to pass through the through hole and / or the gap.

[0009] In one embodiment, the heating member further includes a heat conductor, one end of the heat conductor is connected to the first heating element, and the heat conductor extends into the matrix segment and is connected to the second heating element.

[0010] In one embodiment, the heat conductor is integrally formed with the first heating element and the second heating element; alternatively, the heat conductor is detachably connected to the first heating element and the second heating element; alternatively, the first heating element is integrally formed with the heat conductor, and the second heating element is detachably connected to the heat conductor.

[0011] In one embodiment, when the heat conductor is detachably connected to the second heating element, a positioning structure for fixing the second heating element at a specific position of the heat conductor is provided between the heat conductor and the second heating element.

[0012] In one embodiment, a heat insulating member is further included, and the heat insulating member is disposed between the heating element and the inner wall of the housing to space the heating element from the housing.

[0013] In one embodiment, a spacer segment is provided on a side of the first heating element close to the second end.

[0014] In one embodiment, the first heating element and the second heating element are induction heating elements.

[0015] According to the aerosol generating article of the above embodiment, the first heating element is horizontally disposed and attached to the end face of the matrix section close to the second end. When heated, the entire end face of the matrix section can be directly heated, and the contact area with the matrix section is relatively large, making the heating of the center and periphery of the matrix section more uniform. In addition, a second heating element spaced from the first heating element is provided in the matrix section, and the second heating element is horizontally disposed in the matrix section. In this way, the first heating element and the second heating element can heat the matrix section from different layers of the matrix section, and the heating effect is good, which can further improve the smoking effect in the matrix section. The upper and lower layers of the matrix section, the center and periphery of each layer are heated more uniformly, solving the problem that the temperature of the smoking material at the periphery and some layers of the matrix section is not enough and the smoking effect is poor, and improving the user experience. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an aerosol generating article in an embodiment;

[0017] Figure 2 It is a schematic structural diagram of an aerosol generating article in another embodiment;

[0018] Figure 3 It is a schematic structural diagram of an aerosol generating article in another embodiment;

[0019] Figure 4 It is a schematic structural diagram of an aerosol generating article in another embodiment;

[0020] Figure 5 It is a schematic structural diagram of an aerosol generating article in another embodiment;

[0021] Figure 6 It is an exploded schematic structural diagram of a heating member of an aerosol generating article in an embodiment;

[0022] Figure 7 It is an exploded schematic structural diagram of a heating member of an aerosol generating article in another embodiment;

[0023] Figure 8 It is an exploded schematic structural diagram of a heating member of an aerosol generating article in another embodiment;

[0024] Figure 9 It is a schematic flow diagram of a preparation method of an aerosol generating article in an embodiment;

[0025] Figure 10 It is a schematic flow diagram of a preparation method of an aerosol generating article in another embodiment;

[0026] The accompanying reference numerals are as follows: 11 - housing, 111 - first end, 112 - second end, 113 - air inlet hole, 114 - gap, 12 - matrix section, 13 - heating element, 131 - first heating element, 132 - second heating element, 1321 - through hole, 1322 - mounting hole, 14 - heat conductor, 141 - positioning step, 142 - clamping structure, 15 - spacer section, 151 - cavity portion, 152 - heat insulation member, 153 - heat insulation layer, 17 - cooling section, 18 - filtering section, 19 - heat resistance member. Detailed implementation manners

[0027] The present application will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners adopt related similar reference numerals. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0028] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment and do not mean a necessary sequence, unless it is stated that a certain sequence must be followed.

[0029] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0030] Regarding the problem of uneven heating of the matrix section caused by the central heating method of existing aerosol - generating articles. In this application, the first heating element is horizontally arranged and attached to the end face of the matrix section near the second end. When heating, the entire end face of the matrix section can be directly heated, and the contact area with the matrix section is relatively large, making the heating of the center and periphery of the matrix section more uniform. In addition, a second heating element is arranged in the matrix section at an interval from the first heating element. The second heating element is horizontally arranged in the matrix section. In this way, the first heating element and the second heating element can heat the matrix section from different layers of the matrix section, with good heating effect, which can further improve the smoking effect in the matrix section. The upper and lower segments and the center and periphery of each segment of the matrix section are heated more evenly, solving the problem that the temperature of the smoking substances at the periphery and some segments of the matrix section is not enough to achieve a good smoking effect, improving the user experience.

[0031] In one embodiment, as Figure 1 shown, an aerosol - generating article is provided, including a tubular housing 11, a matrix section 12, a heating element, etc.

[0032] Among them, the housing 11 includes opposite first end 111 and second end 112. The first end 111 can be the near - lip end, that is, the first end 111 is the end that the user sucks when sucking; the second end 112 can be the far - lip end, that is, the second end 112 is the end away from the user's sucking end.

[0033] The matrix section 12 is arranged in the housing 11. When the aerosol - generating article is heated, the smoking substances in the matrix section 12 are heated to generate aerosol for the user to suck.

[0034] The heating element includes a heating element 13. The heating element 13 includes a first heating element 131 and at least one second heating element 132 that are arranged at intervals along the axial direction of the housing 11.

[0035] The first heating element 131 is horizontally arranged and attached to the end face of the matrix section 12 near the second end 112. In the aerosol - generating articles in the related art, residues are likely to remain in the heating device during use. In this embodiment, the first heating element 131 is horizontally arranged and attached to the end face of the matrix section 12 near the second end 112, which blocks the leakage of substances in the matrix section 12 to a certain extent. Further, although substances such as e - liquid in the matrix section 12 pass through the first heating element 131, they will also be further heated by the first heating element 131 to produce aerosol, etc. Thus, the residues left by the aerosol - generating article in the heating device during use can be effectively reduced, and the number of times of cleaning the heating device can be reduced. Moreover, the end face of the matrix section 12 can be heated in a surface - heating manner to improve the smoking effect.

[0036] The second heating element 132 is arranged at an interval from the first heating element 131 in the length direction of the housing 11, and the second heating element 132 is arranged transversely in the substrate section 12, so that the substrate section 12 can be heated from the inside thereof.

[0037] By arranging the first heating element 131 transversely and attaching it to the end face of the substrate section 12 near the second end 112, during heating, the entire end face of the substrate section 12 can be directly heated, and the contact area with the substrate section 12 is relatively large, making the heat received by the center and the periphery of the substrate section 12 more uniform, and solving the problem that the temperature of the fuming substance at the periphery in the central heating mode is insufficient and the fuming effect is poor; in addition, by arranging the second heating element 132 in the substrate section 12, the substrate section 12 can be heated from the inside, which can further improve the fuming effect in the substrate section 12. In this way, the first heating element 131 and the second heating element 132 can heat the substrate section 12 from different layers in the length direction of the substrate section 12, which can further improve the fuming effect in the substrate section 12 and enhance the user experience.

[0038] In one embodiment, as Figure 2 shown, there are a plurality of second heating elements 132, and the plurality of second heating elements 132 are arranged at intervals in the length direction of the housing 11. By arranging a plurality of second heating elements 132, each of the second heating elements 132 heats the substrate section 12 from different layers in the length direction of the substrate section 12, which can further increase the speed of aerosol generation to enhance the user experience.

[0039] In some embodiments, the heating element 13 is an inductive heating element, which can sense the energy of the field and generate heat in a specific field; in some embodiments, the first heating element 131 and the second heating element 132 of the heating element 13 are inductive heating elements, for example, they can be magnetic inductive heating elements. When in use, the aerosol generating substrate is installed in a heating device with a magnetic field generator, and the magnetic field generator is matched with the first heating element 131 and the second heating element 132. By placing the aerosol generating article in the heating device, the induction heating coil of the heating device generates a magnetic field, and the first heating element 131 and the second heating element 132 respond to the magnetic field to generate heat, and then heat the substrate section 12; the magnetic field generator can be an induction heating coil.

[0040] Of course, in some other embodiments, the first heating element 131 and the second heating element 132 can also be heating elements with resistance heating or other forms of heating elements.

[0041] In some embodiments, the peripheries of the first heating element 131 and the second heating element 132 are close to the inner wall of the housing 11. The first heating element 131 and the second heating element 132 can be in the shape of a sheet, a net, etc. The outer contour of the cross-section of the first heating element 131 and the second heating element 132 matches the outer contour of the cross-section of the matrix section 12. For example, they can both be circular. In one embodiment, the housing 11 is a cylindrical housing, the matrix section 12 is filled in a section of the housing, and the first heating element 131 and the second heating element 132 are in the form of a net structure, a disc, a cylinder, etc. with a circular outer contour, and the area of the outer contour of the cross-section of the first heating element 131 and the second heating element 132 is close to the area of the cross-section of the matrix section 12. In this way, the contact area between the first heating element 131, the second heating element 132 and the matrix section 12 is ensured.

[0042] In some embodiments, the cross-sectional shape of the first heating element 131 is substantially the same as the cross-sectional shape of the housing 11. The edge of the first heating element 131 is sealingly connected to the inner wall of the housing 11, so that it can play a role in blocking the end of the housing 11, and can better play the role of preventing the substances in the matrix section 12 from leaking outwards.

[0043] In some embodiments, the first heating element 131 is of a solid design, that is, a structure that can separate its two sides. It can be used as a seal to block the end face of the housing 11 at the second end 112. The aerosol flows towards the first end 111, and to a certain extent, it blocks the substances in the matrix section 12 from leaking outwards. Further, through air holes 113 can be provided on the side wall of the housing 11 from the heating element to the first end 111 to introduce external air flow and carry out the aerosol generated by the matrix section 12. It can be understood that the opening position of the through air holes 113 can be adjusted according to actual needs. In some embodiments, the through air holes 113 are provided on the outer periphery of the lower part of the matrix section 12, and the distance between the through air holes 113 and the end face of the matrix section 12 close to the second end 112 is 1-20 mm. In this way, the external air flow can pass through the matrix section 12 more, which is more conducive to carrying out the generated aerosol.

[0044] In some embodiments, the first heating element 131 can also be provided with a number of through holes, and external air can directly enter the matrix section 12 through the through holes and carry out the generated aerosol.

[0045] In some embodiments, one side of the second heating element 132 close to the first end 111 is in communication with the other side close to the second end 112, which is in a ventilation state, ensuring that the generated aerosol can pass through the second heating element 132 and come out from the first end 111 for suction. In some embodiments, there is a gap 114 between the second heating element 132 and the inner wall of the housing 11; alternatively, the second heating element 132 is provided with a passage communicating the side close to the first end 111 with the side close to the second end 112. The passage may be a through hole 1321 penetrating the second heating element 132 along the axial direction of the housing, or other micro-hole structures. In some embodiments, the second heating element 132 is a mesh structure, and in this case, the mesh holes are the through holes 1321. Of course, the gap 114 and the passage may also be provided simultaneously. When the user sucks, the air flow entering from the air inlet hole 113 can flow through the gap 114 or the passage (such as the through hole 1321) to carry out the aerosol of the matrix section 12 and reach the first end 111 for the user to inhale.

[0046] In some embodiments, there is a passage between one side of the second heating element 132 close to the first end 111 and the other side close to the second end 112, and the size of the smoking material is configured to pass through the passage; in some embodiments, there is a gap 114 between the second heating element 132 and the inner wall of the housing 11, and the gap 114 forms a passage, and the size of the smoking material is configured to pass through the gap 114; in some embodiments, the second heating element 132 is provided with a through hole 1321 arranged along the axial direction of the housing 11, and the size of the smoking material is configured to pass through the through hole 1321, and the through hole 1321 forms a passage; in some embodiments, there is a gap 114 between the second heating element 132 and the inner wall of the housing 11 and the second heating element 132 is provided with a through hole 1321 arranged along the axial direction of the housing 11, and the size of the smoking material is configured to pass through the through hole 1321 and / or the gap 114. The matrix section may be made of the smoking material, and the smoking material may be selected as smoking particles.

[0047] Through the arrangement of the gap 114 and / or the through hole 1321, when loading the smoking material of the matrix section 12, it can enter the space of the first heating element 131 and the second heating element 132 through the gap 114 and / or the through hole 1321 to form a part of the matrix section 12.

[0048] In some embodiments, the matrix segment may be made of a fuming material. When the fuming material is granular, the particle size of the fuming material is smaller than the diameter of the minimum inscribed circle of the gap 114 and / or the through-hole 1321. For example, when the second heating element 132 is only provided with the through-hole 1321, the particle size is smaller than the diameter of the minimum inscribed circle of the through-hole 1321. When only the gap 114 is provided between the second heating element 132 and the inner wall of the housing 11, the particle size is smaller than the diameter of the minimum inscribed circle of the gap 114. When both the through-hole 1321 and the gap 114 are provided, the particle size of the fuming material is smaller than the diameter of the minimum inscribed circle of the gap 114 and the through-hole 1321.

[0049] In some embodiments, the heating member further includes a heat conductor 14. One end of the heat conductor 14 is connected to the first heating element 131, and the heat conductor 14 extends into the matrix segment 12 and is connected to the second heating element 132. In some embodiments, the first heating element 131 is disposed at one end of the heat conductor 14, the heat conductor 14 is disposed along the length direction of the housing, and the second heating element 132 may be spaced apart from the heat conductor 14 in the length direction of the heat conductor.

[0050] The heat conductor 14 can both serve as a mounting member for the second heating element 132 and transfer the heat of the first heating element 131 to the second heating element 132, playing a heat conduction role.

[0051] In some embodiments, the heat conductor 14 is made of a non-magnetic induction heating material and mainly plays a heat conduction role. In some embodiments, the heat conductor 14 may be made of one or several of graphite powder, graphene, boron nitride, alumina, carbon powder, or may be made of other high thermal conductivity material powders, and the thermal conductivity is preferably 1-500 W / m·k.

[0052] In some other embodiments, the heat conductor 14 and the heating element 13 may both be magnetic induction heating materials.

[0053] In some embodiments, when the aerosol generating article is heated in an induction heating magnetic field, the temperature of the heating body is higher than that of the heat conductor 14, that is, both the first heating element 131 and the second heating element 132 are higher than the heat conductor 14, and the temperature difference between the heating body (the first heating element 131 and the second heating element 132) and the heat conductor is in the range of 20-80°C. In this way, the matrix segment emits smoke faster at the part with a higher temperature and slower at a lower temperature, and thus the continuity of smoke emission can be achieved.

[0054] In some embodiments, the heat conductor 14 is a strip-shaped heat conductor made of a heat conductive material, for example, it may be a heat conductive member in the shape of a long strip or a long column. When a sheet-shaped heat conductor is used, the contact area with the matrix segment 12 can be increased, and the heat transfer speed can be improved. When a column-shaped heat conductor is used, the strength of the heat conductor can be increased, ensuring the structural stability of the product.

[0055] In some embodiments, the heat conductor 14 may be disposed along the length direction of the substrate segment 12 and at the axial position of the substrate segment 12, so as to heat from the center and improve the uniformity of heat transfer. The shape of the heat conductor 14 can be designed into various shapes according to needs.

[0056] In some embodiments, the heat conductor 14 and the heating element 13 are integrally formed, so as to simplify the assembly and reduce the production cost.

[0057] In some embodiments, the heat conductor 14 and the heating element 13 are detachably connected to reduce the production difficulty.

[0058] In some embodiments, the first heating element 131 and the heat conductor 14 are integrally formed, and the second heating element 132 and the heat conductor 14 are detachably connected.

[0059] In some embodiments, the heat conductor 14 and the second heating element 132 are detachably connected, and a positioning structure for fixing the second heating element 132 at a specific position of the heat conductor 14 is provided between the heat conductor 14 and the second heating element 132. Each second heating element 132 is provided with a mounting hole 1322, and the inner diameter of the mounting hole 1322 is matched with the positioning structure, so as to position the second heating element 132 at a position away from the first heating element 131 and install the second heating element 132 on the heat conductor 14 at intervals.

[0060] In some embodiments, as Figure 6 shown, the positioning structure may be a positioning step 141 provided on the heat conductor 14. The inner diameter of the mounting hole 1322 of the second heating element 132 is smaller than the diameter of the positioning step 141. Since the positioning step 141 is located at a set distance from the first heating element 131 on the heat conductor 14, when the second heating element 132 is inserted, the second heating element 132 can be positioned at the positioning step 141 and arranged at intervals from the first heating element 131. It can be understood that in embodiments with multiple second heating elements 132, there may also be multiple positioning steps 141, and the diameters of the multiple positioning steps increase from the first end 111 to the second end 112; correspondingly, the diameters of the mounting holes of the second heating elements 132 also increase from the first end 111 to the second end 112.

[0061] In some embodiments, as Figure 7As shown, the positioning structure can be the clamping structure 142 provided on the heat conductor 14. The diameter of the clamping structure 142 is larger than that of the heat conductor 14 and is located at a position set at a certain distance from the first heating element 131. Correspondingly, the inner diameter of the mounting hole 1322 of the second heating element 132 is smaller than the diameter of the clamping structure 142. When the second heating element 132 is inserted, the second heating element 132 can be positioned at the clamping structure 142 and is arranged at an interval from the first heating element 131. It can be understood that in embodiments with multiple second heating elements 132, there can also be multiple clamping structures 142, and the diameters of the multiple positioning steps increase from the first end 111 to the second end 112. Correspondingly, the diameters of the mounting holes of the second heating elements 132 also increase from the first end 111 to the second end 112.

[0062] In some embodiments, as Figure 8 shown, the positioning structure is a variable-diameter structure of the heat conductor 14 itself, and the outer diameter of the heat conductor 14 increases from the first end 111 to the second end 112. The inner diameter of the mounting hole 1322 of the second heating element 132 is smaller than the maximum outer diameter of the heat conductor 14 and larger than the minimum outer diameter of the heat conductor 14. When the second heating element 132 is inserted, when the mounting hole 1322 reaches the position where the outer diameter of the heat conductor 14 is basically equal to it, the second heating element 132 is clamped and positioned, and is arranged at an interval from the first heating element 131. It can be understood that in embodiments with multiple second heating elements 132, the diameters of the mounting holes of the second heating elements 132 also increase from the first end 111 to the second end 112, so that the second heating elements 132 can be positioned at different diameter positions of the heat conductor 14 and are arranged at intervals.

[0063] In some embodiments, as Figure 5 shown, the aerosol-generating article further includes a heat-insulating member 19. The heat-insulating member 19 is arranged between the heating element 13 and the inner wall of the housing 11, separating the heating element 13 and the inner wall of the housing 11, so as to avoid the housing 11 being heated to generate peculiar smell and affecting the use experience. In some embodiments, the heat-insulating member 19 is at least arranged at the part where the heating element 13 is close to the inner wall of the housing 11, and the first heating element 131 can be in close fit with the housing 11 with the heat-insulating member 19 in between; the heat-insulating member 19 can also be wrapped around the outer periphery of the entire matrix section 12, or can be arranged on the entire inner wall of the housing 11. There is no limitation here, as long as the heating element 13 and the housing 11 are separated so that the housing 11 does not generate strange smells due to the heating of the heating element 13. The heat-insulating member 19 can be a heat-resistant and heat-insulating material such as aluminum foil.

[0064] In one embodiment, the aerosol-generating article is provided with a spacer section 15 on the side of the first heating element 131 close to the second end 112. By providing the spacer section 15, after the aerosol-generating article is heated and used, the heated end face thereof will not be directly exposed, thus causing scalding to the user.

[0065] In some embodiments, the spacer section 15 includes a cavity portion 151, and the housing 11 forms the cavity portion 151 between the first heating element 131 and the second end 112; in some embodiments, the spacer section 15 includes a heat-insulating member 152, the heat-insulating member 152 is connected to the housing 11 and seals the second end 112 or seals the side of the first heating element 131 close to the second end 112; in some embodiments, the spacer section 15 includes a heat-insulating layer 153 provided on the outer surface of the first heating element 131.

[0066] In some embodiments, as Figure 1 shown, the spacer section 15 includes a cavity portion 151. The cavity portion 151 is formed between the first heating element 131 and the second end 112 in the housing 11 and is open towards the second end 112. The provision of the cavity portion 151 positions the first heating element 131 inside the housing 11, thus preventing the first heating element 131 from being directly exposed, and thereby playing a role in preventing scalding of the user.

[0067] In some embodiments, as Figure 3 shown, the spacer section 15 includes a heat-insulating member 152. The heat-insulating member 152 is connected to the housing 11 and seals the second end 112 or seals the side of the first heating element 131 close to the second end 112. By providing the heat-insulating member 152, the risk of the user directly contacting the magnetic induction heating member can be further reduced, and the risk of being scalded can be further reduced.

[0068] It can be understood that a heat-insulating member 152 can also be provided in the cavity portion 151, with a certain distance left between the side of the heat-insulating member 152 close to the second end 112 and the second end 112, further playing a role in preventing scalding.

[0069] In some embodiments, as Figure 4 shown, the spacer section 15 includes a heat-insulating layer 153 provided on the outer surface of the first heating element 131. The heat-insulating layer 153 can be a heat-insulating film or other heat-insulating material attached to the outer wall surface of the first heating element 131. Of course, the outer wall surface of the first heating element 131 can be exposed outside the lower end face of the housing 11 or be located inside the housing 11.

[0070] In one embodiment, the housing 11 is circular tubular, and the ratio of the height of the cavity portion 151 in the axial direction to the diameter of the cavity portion 151 is greater than or equal to 0.3:1.

[0071] In one embodiment, the aerosol-generating article further comprises: a cooling section 17 and a filtering section 18 which are arranged inside the substrate section 12 in the housing 11 and sequentially from the second end 112 to the first end 111. In some embodiments, the aerosol-generating article may further comprise a flavor-carrying section 16. In some embodiments, the housing 11 may be a paper tube wrapped around the periphery of the substrate section 12, the flavor-carrying section 16, the cooling section 17 and the filtering section 18. The paper tube may be a hard paper tube, and the housing 11 may also be made of other materials, such as plastic, silica gel, etc., and is a hollow cylinder. In some embodiments, the flavor-carrying section 16 may also be omitted.

[0072] In one embodiment, the substrate section 12 is made of a fuming material, and the fuming material includes one or more of fuming particles, fuming flakes, fuming tobacco strands or fuming blocks having a microporous structure.

[0073] In some embodiments, there is a channel between the side of the second heating element 132 close to the first end 111 and the side close to the second end 112. The channel may be a through hole 1321 formed in the second heating element 132 and / or a gap 114 existing between the second heating element 132 and the side wall of the housing 11. During assembly, the heating member may be integrally installed into the housing 11 so that the first heating element 131 seals to form a cavity installation cavity in the housing 11. When the fuming material is selected as fuming particles, it is filled into the installation cavity from the first end 111. The fuming particles may fall through the channel between the first heating element 131 and the second heating element 132, cover all the second heating elements 132 from the side close to the first end, and the fuming particles are compacted by means such as vibration, thereby forming the substrate section 12.

[0074] In some embodiments, during assembly, the first heating element 131 is first sealed to the second end 112 of the housing 11, then the fuming material is filled, then the second heating element 132 is installed, and then the second heating element 132 is installed on the side of the filled fuming material layer close to the first end 111. The second heating element 132 may be supported by the fuming material or installed on a heat conductor, etc. Then, the fuming material is continuously filled on one side of the second heating element 132, etc. In this way, the steps of installing the second heating element 132 and filling the fuming material are cycled multiple times as needed.

[0075] The present application also provides a preparation method of an aerosol-generating article. In one embodiment, as Figure 9 shown, the preparation method comprises the following steps:

[0076] Providing a tubular housing 11, wherein the housing 11 has opposite first end 111 and second end 112;

[0077] The first heating element 131 and the second heating element 132 are installed in the housing 11 at intervals, such that the first heating element 131 is horizontally disposed at a position close to the second end 112 within the housing 11 and forms an installation cavity with the housing 11, such that the second heating element 132 is located within the installation cavity, and there is a channel between the side of the second heating element 132 close to the first end 111 and the side close to the second end 112;

[0078] The particulate fuming material is loaded into the installation cavity from the first end 111, such that the fuming material passes through the channel and enters the space between the first heating element 131 and the second heating element 132, and covers the second heating element 132 from the side close to the first end 111. In some embodiments, a cardboard tube is used as the housing 11;

[0079] In some embodiments, the first heating element 131 and the second heating element 132 may be formed into an integral body and then installed into the housing 11, or the first heating element 131 and the second heating element 132 may be connected together through a heat conductor 14 to form an integral heating member and then installed into the housing.

[0080] In some embodiments, the first heating element 131 is disposed close to the second end 112 and there is a specific interval section 15 left between the first heating element 131 and the second end 112, that is, the first heating element 131 is suspended above the second end 112, preventing the first heating element 131 from being exposed outside the housing 11, thereby avoiding the risk that the user directly touches the first heating element 131 and gets burned during use.

[0081] The present application also provides another method for preparing an aerosol generating article. In some embodiments, as Figure 10 shown, the preparation method includes the following steps:

[0082] Provide a tubular housing 11, wherein the housing 11 has opposite first end 111 and second end 112;

[0083] Horizontally dispose the first heating element 131 at a position close to the second end 112 within the housing 11, such that the first heating element 131 forms an installation cavity with the housing 11;

[0084] Sequentially fill the installation cavity with a layer of fuming material and a layer of the second heating element 132 from the first end 111, filling N times, wherein N is a positive integer;

[0085] Fill a layer of fuming material from the first end 111 to cover the second heating element 132 from the side close to the first end.

[0086] In some embodiments, a cardboard tube is used as the housing 11;

[0087] In some embodiments, the first heating element 131 is disposed near the second end 112, and a certain interval, specifically an interval section 15, is left between the first heating element 131 and the second end 112, that is, the first heating element 131 is suspended above the second end 112, preventing the first heating element 131 from being exposed outside the housing 11, thereby avoiding the danger that the user directly touches the first heating element 131 and gets burned during use.

[0088] The above uses specific examples to elaborate on the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the idea of the present application, several simple deductions, deformations or substitutions can also be made.

Claims

1. An aerosol generating product, characterized in that The aerosol generating article comprises a tubular shell (11), a substrate segment (12), and a heating element; the shell (11) has a first end (111) and a second end (112) opposite to each other; The matrix segment (12) is arranged in the housing (11); The heating element comprises a heating element (13), The heating element (13) comprises a first heating element (131), the first heating element (131) being arranged transversely and attached to an end surface of the matrix segment (12) close to the second end (112); The heating element (13) further comprises at least one second heating element (132) spaced apart from the first heating element (131) in the length direction of the housing (11), and the second heating element (132) is transversely arranged in the matrix section (12).

2. The aerosol-generating article according to claim 1, wherein There are a plurality of second heating elements (132), and the plurality of second heating elements (132) are arranged at intervals in the length direction of the housing (11).

3. The aerosol-generating article according to claim 1, wherein There is a gap (114) between the second heating element (132) and the inner wall of the shell (11); or, the second heating element (132) is provided with a channel connecting its side close to the first end (111) and its side close to the second end (112).

4. The aerosol-generating article of claim 1, wherein: The substrate segment includes a granular smoking material; There is a gap (114) between the second heating element (132) and the inner wall of the housing (11), and the size of the smoke-generating material is configured to pass through the gap (114); or The second heating element (132) is provided with a through hole (1321) arranged along the axial direction of the housing (11), and the size of the smoking material is configured to be able to pass through the through hole (1321); or There is a gap (114) between the second heating element (132) and the inner wall of the shell (11), and the second heating element (132) is provided with a through hole (1321) arranged axially along the shell (11), and the size of the smoking material is configured to pass through the through hole (1321) and / or the gap (114).

5. The aerosol-generating article of claim 1, wherein: The heating element further comprises a heat conductor (14), one end of the heat conductor (14) being connected to the first heating element (131), and the heat conductor (14) extending into the matrix section (12) to be connected to the second heating element (132).

6. An aerosol generating article according to claim 5, characterized in that The first heating element (131) and the heat conductor (14) are integrally formed, and the second heating element (132) and the heat conductor (14) are detachably connected.

7. An aerosol-generating article according to claim 6, characterized in that The heat conductor (14) and the second heating element (132) are detachably connected, and a positioning structure for fixing the second heating element (132) at a specific position of the heat conductor (14) is provided between the heat conductor (14) and the second heating element (132).

8. The aerosol-generating article of claim 1, wherein: It also comprises a heat-resisting member (19), wherein the heat-resisting member (19) is arranged between the heating element (13) and the inner wall of the housing (11), and separates the heating element (13) from the housing (11).

9. The aerosol-generating article of claim 1, wherein: A spacing section (15) is provided on one side of the first heating element (131) close to the second end (112).

10. An aerosol-generating article according to any one of claims 1 to 9, characterized in that The first heating element (131) and the second heating element (132) are induction heating elements.

Images