Aerosol substrates, aerosol-generating products, and aerosol-generating devices.

Abstract

Invention details;

Description

Aerosol generating substrate, aerosol generating product and aerosol generating device

[0001] This application is based on the Chinese patent application with application number 202310186462.6 and application date of February 20, 2023, and claims the priority of the Chinese patent application. The entire content of the above patent application is hereby introduced into this application as a reference. Technical Field

[0002] The present application relates to the technical field of smoking products, and in particular to an aerosol generating substrate, an aerosol generating product and an aerosol generating device. Background Art

[0003] Smoking products include smoking products that form aerosols by ignition and smoking products that form aerosols by heating without burning. In a typical heat-without-burning smoking product, it contains an aerosol-generating matrix such as tobacco raw materials, flavor raw materials and / or atomizers that can volatilize when heated to generate an aerosol. The aerosol-generating matrix is ​​heated by an external heat source so that the aerosol-generating matrix is ​​just heated to a degree sufficient to emit aerosols. The aerosol-generating matrix will not burn, but is loaded with an atomizer and released by high-temperature heating when used to form smoke.

[0004] In the prior art, a heating body is provided in the heating chamber of the aerosol generating device. When inhalation is required, the smoking article is inserted into the heating chamber of the aerosol generating device, and the heating body heats the smoking article. When the aerosol generating matrix is ​​heated and separated from the heating body, the two move in pairs, which easily causes solid powder particles such as residues adhering to the heating body to fall into the aerosol generating device. The user needs to clean the heating chamber regularly, which not only increases the user's workload, but also may cause damage to the heating body if it is not cleaned properly.

[0005] Summary of the Invention

[0006] In view of this, the present application hopes to provide an aerosol generating substrate, an aerosol generating product and an aerosol generating device, wherein the aerosol generating substrate is not easy to adhere to the heating element or fall into the heating chamber, thereby reducing the user's cleaning workload.

[0007] To achieve the above-mentioned purpose, an embodiment of the present application provides an aerosol generating substrate, which is columnar and has a heating element plug hole inside. The heating element plug hole extends along the length direction of the aerosol generating substrate and passes through at least one end of the aerosol generating substrate along the length direction.

[0008] In one embodiment, the aerosol-generating substrate has a channel, which extends along the length of the aerosol-generating substrate and passes through at least one end of the aerosol-generating substrate along the length.

[0009] In one embodiment, the number of the heating element plug hole is one, and the heating element plug hole extends along the length direction of the aerosol generating substrate, and the heating element plug hole is arranged on the central axis of the aerosol generating substrate.

[0010] In one embodiment, the channel includes a plurality of airway holes, and the plurality of airway holes are arranged inside the aerosol generating matrix. On the cross section perpendicular to the length direction of the aerosol generating matrix, the cross section of the heating element plug hole is long and strip-shaped, and the airway holes are symmetrically distributed about the heating element plug hole.

[0011] In one embodiment, the channel includes a plurality of airway holes, which are arranged inside the aerosol generating matrix, and the heating element plug hole is a cylindrical hole. In a plane perpendicular to the length direction of the aerosol generating matrix, the airway holes are symmetrically distributed about the origin of the heating element plug hole.

[0012] In one embodiment, the channel includes a plurality of airway holes, and the plurality of airway holes are arranged inside the aerosol generating matrix. The center line of the heating element plug hole along the extension direction coincides with the central axis of the aerosol generating matrix along the length direction, and each of the airway holes is arranged in a circumferential direction around the center of the heating element plug hole.

[0013] In one embodiment, the channel includes a plurality of airway holes, and the plurality of airway holes are arranged inside the aerosol generating matrix, and all of the airway holes are arranged along a plurality of trajectory lines, wherein the airway holes on a single trajectory line are linearly arranged along a first direction, and the plurality of trajectory lines are arranged along a second direction, and the first direction and the second direction are not parallel.

[0014] In one embodiment, the airway holes on a single trajectory line are arranged in a straight line along the first direction, and multiple trajectory lines are arranged in parallel along a second direction, and the first direction is perpendicular to the second direction.

[0015] In one embodiment, the distance between two adjacent airway holes on a single trajectory line is equal to the distance between two adjacent trajectory lines.

[0016] In one embodiment, the airway holes on a single trajectory line are arranged along a circumferential direction around the center of the aerosol generating substrate, and multiple trajectory lines are arranged in concentric circles along the radial direction of the aerosol generating substrate.

[0017] In one embodiment, the airway holes on a single trajectory are repeatedly arranged, and the apertures of the airway holes on each trajectory gradually increase radially outward from the aerosol generating substrate.

[0018] In one embodiment, the airway holes on a single trajectory are repeatedly arranged, and the distance between the airway holes on two adjacent trajectory lines gradually decreases radially outward from the aerosol generating substrate.

[0019] In one embodiment, the aerosol-generating substrate is a unitary structure.

[0020] In one embodiment, the heating element plug hole passes through opposite ends of the aerosol generating substrate along the length direction; on a plane perpendicular to the length direction of the aerosol generating substrate, the cross-sectional shape of the aerosol generating substrate is circular.

[0021] In one embodiment, the channel includes a plurality of spiral air channels, and the spiral air channels are arranged inside the aerosol generating substrate. At least a portion of the spiral air channels along the extension direction is in the shape of a curve with a non-zero curvature.

[0022] In one embodiment, the channel comprises an airway groove, and the airway groove is provided on the circumferential surface of the aerosol generating substrate.

[0023] In one embodiment, the aerosol generating matrix is ​​a particle combination, and micropores are formed between the particles of the particle combination. A plurality of the micropores are connected to form a micro airway connected to the channel and / or the heating element plug hole, and the cross-sectional area of ​​the micropore is 0.7 nm. 2 ~710μm 2 ; Alternatively, the hydraulic diameter of the micropores is 10 nm to 30 μm.

[0024] In one embodiment, in a cross section perpendicular to the length direction of the aerosol generating substrate, the cross-sectional shape of the heating element plug hole is a long strip, a circle, an ellipse, a ring, an arc, a zigzag or a polygon.

[0025] In one embodiment, in a cross section perpendicular to the length direction of the aerosol generating substrate, the cross section of the heating element plug hole is in the shape of a long strip; the length of the cross section is 1 mm to 40 mm; and / or,

[0026] The width of the cross section is 0.05 mm to 3 mm.

[0027] In one embodiment, the cross-sectional shape of the heating element plug hole is circular, and the hole diameter of the heating element plug hole is 0.1 mm-3 mm.

[0028] In one embodiment, the heating element plug hole is a cylindrical hole, and the cross-sectional area of ​​the heating element plug hole is 0.01mm 2 -7.1mm 2 .

[0029] The present application also provides an aerosol-generating article, comprising:

[0030] An aerosol-generating substrate as described in any one of the above;

[0031] a functional segment, disposed at one end of the aerosol generating substrate along the length direction, comprising at least a filtering segment for filtering aerosol;

[0032] An outer wrapping layer wraps around the functional segment and the aerosol generating substrate.

[0033] In one embodiment, the functional section further includes a cooling section, and the cooling section is located between the filtering section and the aerosol generating substrate.

[0034] An embodiment of the present application also provides an aerosol generating device for use in conjunction with the aerosol generating product described above, wherein the aerosol generating device includes a heating component, the heating component includes a heating body, and the heating body is used to be inserted into the heating body socket and heat the aerosol generating substrate to generate an aerosol.

[0035] The embodiments of the present application provide an aerosol generating matrix, an aerosol generating product, and an aerosol generating device, wherein the aerosol generating matrix is ​​cylindrical, for example, it can be an integrated structure manufactured by an extrusion process, and the interior of the aerosol generating matrix has a heating element plug hole extending along the length direction of the aerosol generating matrix, and the heating element plug hole passes through at least one end of the aerosol generating matrix along the length direction. By providing the heating element plug hole inside the aerosol generating matrix, the heating element plug hole matches the shape of the heating element of the aerosol generating device, so that the heating element on the aerosol generating device can be plugged into and matched with the heating element plug hole. This facilitates the insertion of the heating element into the aerosol generating matrix and does not squeeze the structure around the heating element plug hole, so that the aerosol generating matrix maintains a relatively uniform matrix density, and is less likely to cause deformation or rupture of the outer wrapping layer wrapped around the circumference of the aerosol generating matrix. In addition, when the aerosol generating matrix is ​​separated from the aerosol generating device after being heated, the aerosol generating matrix is ​​not easy to adhere to the heating element or fall into the heating chamber, and is not easy to contaminate the heating chamber, which can reduce the user's cleaning workload and thus improve the user's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic structural diagram of an aerosol generating device according to an embodiment of the present application;

[0037] FIG2 is a cross-sectional view of a first aerosol generating device according to an embodiment of the present application;

[0038] FIG3 is a cross-sectional view of a second aerosol generating device according to an embodiment of the present application;

[0039] FIG4 is a cross-sectional view of a third aerosol generating device according to an embodiment of the present application;

[0040] FIG5 is a schematic structural diagram of an aerosol generating article according to an embodiment of the present application;

[0041] FIG6 is a cross-sectional view of a first aerosol-generating article according to an embodiment of the present application;

[0042] FIG7 is a cross-sectional view of a second aerosol-generating article according to an embodiment of the present application;

[0043] FIG8 is a cross-sectional view of a third aerosol-generating article according to an embodiment of the present application;

[0044] FIG9 is a schematic structural diagram of a first aerosol generating substrate according to an embodiment of the present application;

[0045] FIG10 is a schematic structural diagram of a second aerosol generating substrate according to an embodiment of the present application;

[0046] FIG11 is a schematic structural diagram of a third aerosol generating substrate according to an embodiment of the present application;

[0047] FIG12 is a schematic structural diagram of a fourth aerosol generating substrate according to an embodiment of the present application;

[0048] FIG13 is a schematic structural diagram of a fifth aerosol generating substrate according to an embodiment of the present application;

[0049] FIG14 is a schematic structural diagram of a sixth aerosol generating substrate according to an embodiment of the present application;

[0050] FIG15 is a schematic structural diagram of a seventh aerosol generating substrate according to an embodiment of the present application;

[0051] FIG16 is a schematic structural diagram of an eighth aerosol generating substrate according to an embodiment of the present application;

[0052] FIG17 is a schematic structural diagram of a ninth aerosol generating substrate according to an embodiment of the present application;

[0053] FIG18 is a schematic structural diagram of a tenth aerosol generating substrate according to an embodiment of the present application;

[0054] FIG19 is a schematic structural diagram of an eleventh aerosol-generating substrate according to an embodiment of the present application; FIG20 is a cross-sectional view of a twelfth aerosol-generating substrate according to an embodiment of the present application;

[0055] FIG21 is a cross-sectional view of a thirteenth aerosol-generating substrate according to an embodiment of the present application;

[0056] FIG22 is a schematic structural diagram of a fourteenth aerosol generating substrate according to an embodiment of the present application;

[0057] FIG23 is a schematic structural diagram of a fifteenth aerosol generating substrate according to an embodiment of the present application;

[0058] FIG24 is a schematic structural diagram of a sixteenth aerosol generating substrate according to an embodiment of the present application;

[0059] FIG25 is a schematic structural diagram of a seventeenth aerosol generating substrate according to an embodiment of the present application;

[0060] FIG26 is a schematic structural diagram of an eighteenth aerosol generating substrate according to an embodiment of the present application;

[0061] FIG27 is a schematic structural diagram of a nineteenth aerosol generating substrate according to an embodiment of the present application;

[0062] FIG28 is a schematic structural diagram of the twentieth aerosol generating substrate according to an embodiment of the present application;

[0063] FIG29 is a schematic structural diagram of a twenty-first aerosol generating substrate according to an embodiment of the present application;

[0064] FIG30 is a schematic structural diagram of a twenty-second aerosol-generating substrate according to an embodiment of the present application;

[0065] FIG31 is a schematic structural diagram of a twenty-third aerosol generating substrate according to an embodiment of the present application;

[0066] FIG32 is a schematic structural diagram of a twenty-fourth aerosol generating substrate according to an embodiment of the present application;

[0067] FIG33 is a cross-sectional view of FIG32;

[0068] FIG34 is a perspective view of FIG32;

[0069] FIG35 is a schematic structural diagram of the twenty-fifth aerosol generating substrate according to an embodiment of the present application;

[0070] FIG36 is a schematic cross-sectional view of the structure of an aerosol generating substrate according to an embodiment of the present application. DETAILED DESCRIPTION

[0071] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0072] An embodiment of the present application provides an aerosol generating matrix. Please refer to Figures 5 to 35. The aerosol generating matrix 10 is columnar and has a heating element plug hole 10d inside. The heating element plug hole 10d extends along the length direction of the aerosol generating matrix 10 and passes through at least one end of the aerosol generating matrix 10 along the length direction.

[0073] The aerosol-generating substrate 10 is used to generate an aerosol when heated for inhalation by the user. In the embodiment of the present application, the aerosol-generating substrate 10 is generally cylindrical. The cylindrical shape can be cylindrical (i.e., a circular cross-section), prismatic (i.e., a polygonal cross-section), elliptical (i.e., an elliptical cross-section), etc., without limitation.

[0074] Exemplarily, the aerosol-generating matrix 10 is a particle combination, also known as a powder combination, and is a reconstituted tobacco medium, for example, a reconstituted tobacco medium containing ingredients such as a smoke-generating agent and tobacco. The aerosol-generating matrix 10 is a one-piece structure, for example, a one-piece structure that can be formed by extrusion molding, injection molding, or an extrusion process. Extrusion molding refers to a processing method in which a raw material mixture is added to an extruder, the material is heated and plasticized by the action between the extruder barrel and the screw, and is pushed forward by the screw and continuously passed through a mold at the extruder discharge port to form various cross-sectional products or semi-finished products. The medium structure formed by extrusion molding is strip-shaped. In this way, the aerosol-generating matrix 10 remains a one-piece medium even when it is heated and puffed or stops being heated, and is not prone to disintegration and falling. This solves the problems of thin-sheet, filamentous, or loose-particle aerosol-generating matrices 10 in the prior art, such as loose flakes, falling off of filamentous and granular components, difficulty in cleaning, and uneven composition.

[0075] The aerosol generating matrix 10 has a heating element plug hole 10d inside, which extends along the length direction of the aerosol generating matrix 10. That is, the heating element plug hole 10d extends along the longitudinal direction of the aerosol generating matrix 10. The heating element plug hole 10d is used to plug and cooperate with the heating element 20 of the aerosol generating device 200.

[0076] The heater plug hole 10d extending through at least one end of the aerosol generating substrate 10 along the length direction means that the heater plug hole 10d can extend through opposite ends of the aerosol generating substrate 10 along the length direction (see FIG20 ), or one end of the heater plug hole 10d can extend through the end surface of the aerosol generating substrate 10 along the length direction, while the other end of the heater plug hole 10d is a blind end (see FIG21 ). It is understood that extending through both ends of the aerosol generating substrate 10 along the length direction is more conducive to aerosol release than extending through one end of the aerosol generating substrate 10 along the length direction.

[0077] The embodiments of the present application further provide an aerosol-generating product, as shown in Figures 5 to 8 , which includes a functional segment 30, an outer wrapping layer 40, and the aerosol-generating substrate 10 of any embodiment of the present application.

[0078] It should be noted that the aerosol-generating article 100 relies on the aerosol-generating substrate 10 to generate aerosol, and the functional segment 30 is not used for aerosol generation. The functional segment 30 is disposed at one end of the aerosol-generating substrate 10 along its length. Referring to Figures 6 to 8 , the functional segment 30 includes at least a filter segment 31 for filtering the aerosol. The filter segment 31 may also be referred to as a filter. The user inhales the filtered aerosol through the filter segment 31 of the functional segment 30.

[0079] It should be noted that the aerosol generating product of the embodiment of the present application can be used for inhalation by ignition or by heat-without-combustion. In the embodiment of the present application, the aerosol generating product 100 used for inhalation by heat-without-combustion is described as an example.

[0080] An embodiment of the present application also provides an aerosol generating device for use in conjunction with the sol-generating product provided in an embodiment of the present application. Please refer to Figures 1 to 4. The aerosol generating device 200 includes a heating component, and the heating component includes a heating body 20. The heating body 20 is used to be inserted into the heating body socket hole 10d of the aerosol generating substrate 10 and heat the aerosol generating substrate 10 to generate an aerosol.

[0081] Specifically, referring to Figures 2 to 4, the aerosol generating device 200 includes a shell 201 and a power supply assembly arranged in the shell 201. The shell 201 has a storage chamber. The power output part of the power supply assembly is arranged in the storage chamber or around the side wall of the storage chamber. When the aerosol generating product 100 is inserted into the storage chamber at a position corresponding to the length range of the aerosol generating matrix 10, the power output part transmits power to the heating element 20 in a contact or non-contact manner. The heating element 20 receives energy from the outside and generates heat, thereby heating and atomizing the aerosol generating matrix 10 to generate an aerosol.

[0082] In the embodiments of the present application, the length direction does not specifically refer to the direction in which the outer contour of the aerosol-generating substrate 10 is longest. Specifically, the arrangement direction of the functional segments 30 and the aerosol-generating substrate 10 coincides with the length direction; the direction in which the aerosol-generating article 100 is inserted into the heating chamber 200a and the direction in which the aerosol-generating article 100 is removed from the heating chamber 200a are both parallel to the length direction. The length of the aerosol-generating substrate 10 along the length direction may be longer, shorter, or the same as the length in other directions.

[0083] For example, when the aerosol-generating substrate 10 has a cylindrical profile, the length direction is the axial direction of the aerosol-generating substrate 10. It should be noted that even when the axial length of the aerosol-generating substrate 10 is less than its diameter, the length direction of the aerosol-generating substrate 10 is still the axial direction. For another example, when the aerosol-generating substrate 10 has a rectangular profile, the length direction is still the direction defined above, i.e., the arrangement direction of the functional segments 30 and the aerosol-generating substrate 10, or the direction in which the heating chamber 200a is loaded and unloaded with the aerosol-generating article 100. The length direction of the aerosol-generating substrate 10 can be any of the length, width, or height of the rectangular parallelepiped.

[0084] For example, when the aerosol generating matrix 10 is used alone, that is, not combined with the functional segment 30, the length direction is the perpendicular direction of the distance between the two ends of the aerosol generating matrix 10. For example, when the aerosol generating matrix 10 is a cylinder, the length direction is the perpendicular direction of the distance between the two end faces. For example, when the aerosol generating matrix 10 is a column with a cross-section in a triangular, polygonal, oblong, elliptical, etc., the length direction is the axial direction. When the aerosol generating matrix 10 is a rectangular parallelepiped, the length direction of the aerosol generating matrix 10 can be any direction of the length, width, and height of the rectangular parallelepiped.

[0085] The aerosol-generating matrix 10 of the embodiment of the present application is processed with a heating element plug hole 10d when the aerosol-generating matrix 10 is prepared. During use, the heating element 20 can be inserted into the heating element plug hole 10d. In this way, when the heating element 20 is inserted into the heating element plug hole 10d, the heating element 20 will not squeeze the structure around the heating element plug hole 10d to a small extent or at all, so that the aerosol-generating matrix 10 maintains a relatively uniform matrix density, and the outer wrapping layer 40 wrapped around the outer periphery of the aerosol-generating matrix 10 is less likely to deform or rupture. In addition, when the aerosol-generating matrix 10 is separated from the aerosol-generating device 200 after being heated, the aerosol-generating matrix 10 is less likely to adhere to the heating element or fall into the heating chamber 200a, and is less likely to contaminate the heating chamber 200a, which can reduce the user's cleaning workload and thus improve the user's user experience.

[0086] For example, the aerosol-generating substrate 10 is an integral structure. Specifically, the aerosol-generating substrate 10 can be directly processed into the desired shape through a mold, rather than being made of multiple independent sub-pieces connected together by means such as bonding. In this way, the aerosol-generating substrate 10 has better structural strength and is not easy to disperse.

[0087] The material of the filter section 31 includes but is not limited to triacetyl cellulose, diacetyl cellulose, polypropylene cellulose, polyester cellulose and the like.

[0088] The outer wrapping layer 40 wraps around the circumferential exterior of the functional segment 30 and the aerosol-generating substrate 10 .

[0089] The material of the outer wrapping layer 40 is not limited, for example, including but not limited to one or more combinations of fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE, PBAT and the like.

[0090] In some embodiments, as shown in Figures 6 and 8 , the functional section 30 includes only a filter section 31. In other embodiments, as shown in Figure 7 , in addition to the filter section 31, the functional section 30 further includes a support section (not shown) and / or a cooling section 32, which are disposed between the aerosol-generating substrate 10 and the filter section 31.

[0091] The cooling section 32 is used to cool the aerosol before the filtering section 31 filters the aerosol, so as to reduce the temperature of the aerosol and improve the "burning mouth" phenomenon when the user inhales the aerosol.

[0092] The material of the cooling section 32 includes but is not limited to one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (butylene adipate-co-terephthalate), PP (Polypropylene), acetate fiber, and acrylic fiber materials.

[0093] The material of the filter section includes but is not limited to one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (butylene adipate-co-terephthalate), PP (Polypropylene), acetate fiber, and acrylic fiber materials.

[0094] The materials of the cooling section 32 and the filtering section can be the same or different.

[0095] The support segment has a certain structural strength and serves to limit the axial position of the aerosol-generating substrate 10. Specifically, when the aerosol-generating article 100 is inserted into the heating chamber 200a of the aerosol-generating device 200, or when the heating element is inserted into the aerosol-generating substrate 10, the support segment provides a reaction force on the aerosol-generating substrate 10, preventing the aerosol-generating substrate 10 from moving in the axial direction.

[0096] The specific components of the aerosol generating matrix 10 are not limited here. For example, in one embodiment, the aerosol generating matrix 10 may include plant components, auxiliary components, smoke-generating components, adhesive components, etc.

[0097] In one embodiment, the plant component is one or more combinations of powders formed from crushed tobacco leaf raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and flavor plants. The plant component is used to generate an aerosol containing nicotine when heated.

[0098] In one embodiment, the auxiliary component may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant component and also have micropores 10e, which can increase the porosity of the wall material after the plant component is formed, thereby improving the aerosol release rate.

[0099] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase particle flowability, reduce friction between particles, and achieve a more uniform particle density. They can also reduce mold pressure and reduce mold wear.

[0100] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers (also known as surfactants) reduce the interfacial tension between water-soluble and water-insoluble components in a mixed system and form a strong film on the surface of the droplets. Alternatively, due to the charge imparted by the emulsifier, an electrical double layer is formed on the droplet surface, preventing the droplets from agglomerating and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0101] In one embodiment, the function of the smoke-generating agent component is to generate a large amount of vapor when heated, thereby increasing the amount of smoke produced by the smoking article. The smoke-generating agent may include, for example, a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol, and glycerol); an ester of a polyhydric alcohol (such as glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid), or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triactin, meso-erythritol, a mixture of diacetyl glycerides, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, and lauryl acetate).

[0102] In one embodiment, the binder component is a natural plant-extracted, non-ionically modified viscous polysaccharide, including one or more of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The binder is used to bond the particles together, preventing them from loosening. Furthermore, it improves the water resistance of the aerosol-generating matrix 10, is harmless to the human body, and has certain health benefits.

[0103] For example, referring to Figures 9 to 34 , the aerosol-generating substrate 10 is cylindrical, meaning that the cross-section of the aerosol-generating substrate 10, taken in a plane perpendicular to the length of the aerosol-generating substrate 10, has a regular circular or substantially circular profile. The cylindrical aerosol-generating substrate 10 has a regular shape, which reduces the difficulty of the manufacturing process.

[0104] In one embodiment, the aerosol-generating substrate 10 has a channel 10c extending along the length of the aerosol-generating substrate 10 and penetrating at least one end of the aerosol-generating substrate 10 along the length direction. That is, the channel 10c extends along the longitudinal direction of the aerosol-generating substrate 10.

[0105] The channel 10c passes through at least one end of the aerosol-generating substrate 10 along the length direction, which means that the channel 10c can pass through the opposite ends of the aerosol-generating substrate 10 along the length direction (please refer to Figure 20), and the air flow can flow from one end of the aerosol-generating substrate 10 along the length direction through the channel 10c to the other end of the aerosol-generating substrate 10 along the length direction.

[0106] Of course, referring to Figure 21 , one end of the channel 10c may extend through the longitudinal end surface of the aerosol-generating substrate 10, while the other end of the channel 10c is a blind end. In particular, as shown in Figure 21 , each channel 10c extends through the same longitudinal end of the aerosol-generating substrate 10. In other embodiments, some channels 10c may extend through one longitudinal end of the aerosol-generating substrate 10, while another portion of the channels 10c extends through the other longitudinal end of the aerosol-generating substrate 10.

[0107] It can be understood that, compared with the airway hole 10a penetrating one end of the aerosol generating substrate 10 along the length direction, the airway hole 10a penetrating both ends of the aerosol generating substrate 10 along the length direction is more conducive to reducing the user's inhalation resistance.

[0108] Channel 10c can increase the surface area of ​​the aerosol generating matrix 10, facilitate heat transfer, and improve heating efficiency. The aerosol in channel 10c is transported to the suction end under the action of the suction negative pressure. Channel 10c can reduce the user's suction resistance and improve the user experience. It should be noted that the suction resistance is positively correlated with the flow resistance of the aerosol. The smaller the flow resistance of the aerosol in the aerosol generating matrix 10, the smaller the suction resistance experienced by the user. The greater the flow resistance of the aerosol in the aerosol generating matrix 10, the greater the suction resistance experienced by the user.

[0109] It should be noted that, referring to Figure 36, the aerosol generating matrix 10 is a particle complex, and micropores 10e are formed between the particles of the particle complex, that is, the gaps between the particles constitute the micropores 10e, and the micropores 10e are connected to form micro airways connected to the channel 10c and / or the heating element plug hole 10d.

[0110] The channels 10c and micro-airways can increase the surface area of ​​the aerosol-generating matrix 10, facilitate heat transfer, and improve heating efficiency. When the medium of the aerosol-generating matrix 10 is heated, it releases aerosol, which is collected in the channels 10c through the gaps between the wall materials or the micro-airways. The aerosol released by the atomized medium exposed to the airway holes 10a (i.e., the atomized medium located on the inner wall surface of the airway holes) can be directly released into the airway holes 10a. The aerosol between adjacent airway holes 10a can also circulate through the micro-airways and be transported to the suction end under the action of the negative suction pressure.

[0111] It should be noted that the above-mentioned channel 10c is a pore in the macroscopic sense, and the micropore 10e is a pore in the microscopic sense. The cross-sectional area of ​​the channel 10c is much larger than that of the micropore 10e. The size of the micropore 10e is determined by the gap between particles.

[0112] For example, the cross-sectional area of ​​the micropore 10e is 0.7 nm 2 (square nanometers)-710μm 2 (square micrometer). For example, 1nm 2 , 10nm 2 , 25nm 2 , 30nm 2 , 40nm 2 , 50nm 2 , 60nm 2 , 70nm 2 , 80nm 2 , 100nm 2 , 200nm 2 , 300nm 2 , 400nm 2 , 500nm 2 , 600nm 2, 700nm 2 , 800nm 2 , 900nm 2 , 100μm 2 , 200μm 2 , 300μm 2 , 400μm 2 , 500μm 2 , 600μm 2 , 700μm 2 wait.

[0113] When the cross-sectional area of ​​the micropore 10e is less than 0.7 nm 2 When the cross-sectional area of ​​the micropores 10e of the medium body is greater than 710 μm, the effective components in the medium are not easy to volatilize into the airway holes 10a, which will lead to a decrease in the utilization rate of the medium. 2 When the micropores 10e are larger than the micropores 10e, the heat conduction in the micropores 10e will be uneven, resulting in a decrease in the smoking experience. Therefore, in this embodiment, the cross-sectional area of ​​the micropores 10e is controlled to be 0.7nm. 2 -710μm 2 It can not only take into account the medium utilization rate, but also improve the suction experience.

[0114] More preferably, the cross-sectional area of ​​the micropore 10e is 1963 nm 2 -20μm 2 .

[0115] Illustratively, the hydraulic diameter of the micropore 10e is 10 nm (nanometer) to 30 μm (micrometer), for example, 10 nm, 20 nm, 24 nm, 30 nm, 40 nm, 50 nm, 60 nm, 70 nm, 80 nm, 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 μm, 2 μm, 3 μm, etc.

[0116] When the hydraulic diameter of the micropores 10e is less than 10nm, the active ingredients within the aerosol-generating matrix 10 are less likely to volatilize into the airway pores 10a, resulting in reduced matrix utilization. When the hydraulic diameter of the micropores 10e in the aerosol-generating matrix 10 is greater than 30μm, this leads to uneven heat conduction within the micropores 10e, resulting in a reduced puffing experience. Therefore, in this embodiment, controlling the hydraulic diameter of the micropores 10e to between 10nm and 30μm achieves both matrix utilization and an improved puffing experience.

[0117] Exemplarily, the hydraulic diameter of the micropore 10e is 50 nm-5 μm.

[0118] The number of the heating element plug hole 10d can be one or more. In the embodiment of the present application, the description is made by taking the number of the heating element plug hole 10d as one as an example.

[0119] For example, there is one heater plug hole 10d, which extends along the length of the aerosol generating substrate 10. In other words, the size of the heater plug hole 10d in the length direction of the aerosol generating substrate 10 is much larger than the size in the direction perpendicular to the length of the aerosol generating substrate 10.

[0120] The arrangement position of the heating element insertion hole 10d in the plane perpendicular to the longitudinal direction of the aerosol-generating substrate 10 is not limited.

[0121] For example, referring to Figures 10 to 35 , the heating element insertion hole 10d is positioned on the central axis of the aerosol-generating substrate 10. The central axis is a virtual reference line located at the center of the cross-section of the aerosol-generating substrate 10 in a plane perpendicular to the length of the aerosol-generating substrate 10. In this embodiment, the heating element 20 inserted into the heating element insertion hole 10d can achieve a radially distributed heat distribution throughout the aerosol-generating substrate 10, resulting in relatively uniform heating around the heating element 20, thus ensuring stable and uniform aerosol release from the aerosol-generating substrate 10.

[0122] In some other embodiments, the heating element plug hole 10d may also be eccentrically arranged relative to the central axis, that is, the heating element plug hole 10d may not be arranged on the central axis.

[0123] The specific shape of the heater plug hole 10d is not limited. For example, in a cross section perpendicular to the length of the aerosol generating substrate 10, the cross-sectional shape of the heater plug hole 10d can be a strip as shown in Figures 10, 11, and 16 to 18, a circle as shown in Figures 12 and 23 to 29, an ellipse as shown in Figure 13, a ring, an arc, or a zigzag shape as shown in Figure 9, or a polygon as shown in Figures 14 and 15.

[0124] For example, referring to Figures 10, 11 and 16 to 18, in the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross section of the heating element plug hole 10d is long and strip-shaped, and the heating element plug hole 10d extends along the length direction of the aerosol generating substrate 10.

[0125] The cross-sectional shape of the elongated heater plug hole 10d, taken perpendicular to the length of the aerosol-generating substrate 10, is not limited, and may be, for example, V-shaped, straight, or arcuate. In this case, the heater 20 mating with the heater plug hole 10d is sheet-shaped and extends along the length of the aerosol-generating substrate 10.

[0126] Specifically, in a cross section perpendicular to the length of the aerosol-generating substrate 10, the cross-section of the heater insertion hole 10d is an elongated strip, with a length of 1 mm to 40 mm and a width of 0.05 mm to 3 mm. By controlling the length and width of the heater insertion hole 10d, the contact area between the heater 20 and the aerosol-generating substrate 10 can be easily controlled, thereby facilitating control of heating efficiency.

[0127] Exemplarily, the length of the cross section of the heating element plug hole 10d is 10 mm to 20 mm.

[0128] Exemplarily, the width of the cross section of the heating element plug hole 10d is 0.3 mm to 0.8 mm.

[0129] In some other embodiments, referring to FIG. 12 to FIG. 15 and FIG. 23 to FIG. 29 , the heating element plug hole 10 d is a cylindrical hole and extends along the length direction of the aerosol generating substrate 10 .

[0130] The cross-sectional shape of the cylindrical hole, measured perpendicular to the length of the aerosol-generating substrate 10, is not limited to a specific shape, and may be, for example, circular, elliptical, or polygonal. The heating element 20 that engages with the heating element insertion hole 10d is cylindrical and extends along the length of the aerosol-generating substrate 10. The cross-sectional shape of the cylindrical heating element 20 is not limited to a specific shape, and may be, for example, circular, elliptical, or polygonal.

[0131] In some embodiments, the cross-section of the heater plug hole 10d in a cross section perpendicular to the length direction of the aerosol-generating substrate 10 is circular, and the diameter of the heater plug hole is 0.1 mm to 3 mm, for example, 0.1 mm, 0.2 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.6 mm, 1.8 mm, 2 mm, 2.1 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, etc.

[0132] In some embodiments, the heating element plug hole 10d is a cylindrical hole, and the cross-sectional area of ​​the heating element plug hole 10d in the cross section perpendicular to the length direction of the aerosol generating substrate 10 is 0.01mm 2 -7.1mm 2 For example, 0.01mm 2 , 0.08mm 2 , 0.4mm 2 , 0.5mm 2 , 0.8mm 2 , 1mm 2 , 1.6mm 2 , 1.8mm 2 , 2mm 2, 3mm 2 , 3.2mm 2 , 4mm 2 , 5mm 2 , 6mm 2 , 6.5mm 2 、 6.8mm 2 , 7mm 2 , 7.1mm 2 wait.

[0133] For example, the heating element plug hole 10d is a cylindrical hole, and the cross-sectional area of ​​the heating element plug hole 10d in the cross section perpendicular to the length direction of the aerosol generating substrate 10 is 0.5mm 2 -3.2mm 2 .

[0134] It should be noted that the number of channels 10c is not limited and can be one or more.

[0135] For example, referring to Figures 16 to 34 , channel 10c includes airway pores 10a, which are disposed within aerosol-generating substrate 10. That is, at least a portion of channel 10c functions as airway pores 10a. In a cross-section perpendicular to the length of aerosol-generating substrate 10, the walls of airway pores 10a are connected end to end to form a closed pore.

[0136] By setting the airway hole 10a, the surface area of ​​the aerosol generating matrix 10 can be increased (the side wall of the airway hole 10a is equivalent to a part of the surface of the aerosol generating matrix 10), so that the heat of the aerosol generating matrix 10 can enter the interior of the aerosol generating matrix 10 from the outer surface of the aerosol generating matrix 10. Compared with the structure in the related art that directly conducts heat inside the aerosol generating matrix 10, the heating efficiency can be improved.

[0137] For example, the cross-sectional area of ​​the airway hole 10a is 0.0019 mm 2 ~30mm 2 (square millimeters). For example, 0.002mm 2 , 0.1mm 2 , 0.2mm 2 , 0.6mm 2 , 1mm 2 , 2mm 2 , 5mm 2 , 7mm 2 , 10mm 2 , 12mm 2 , 16mm 2 , 18mm 2 , 20mm 2 , 21mm 2, 22mm 2 , 25mm 2 , 26mm 2 , 28mm 2 , 29mm 2 , 30mm 2 wait.

[0138] When the cross-sectional area of ​​the airway hole 10a is greater than 30 mm 2 When the aerosol is heated, the number of airway holes 10a is small, the aerosol generating matrix 10 is prone to burnt, the internal flow velocity of the medium is small under the same volume suction state, the aerosol is prone to sedimentation, resulting in low medium utilization rate, and the aerosol generating matrix 10 is prone to uneven aerosol release during the heating process (for example, the first two puffs release a large amount of aerosol, and the next few puffs release a small amount of aerosol), which affects the user's puffing experience.

[0139] When the cross-sectional area of ​​the airway hole 10a is less than 0.0019 mm 2 When the size of the airway hole 10a is not easily controlled, the defective rate of the aerosol generating matrix 10 is increased, and the aerosol generating matrix 10 is prone to problems such as large inhalation resistance and low utilization rate.

[0140] The cross-sectional area of ​​the airway hole 10a is 0.0019 mm 2 ~30mm 2 When the aerosol generating matrix 10 is within the range of , the flow resistance of the aerosol generating matrix 10 is relatively small (that is, the suction resistance is relatively small), and the flow rate of the aerosol is appropriate, the aerosol inside the aerosol generating matrix 10 is easy to extract, the aerosol release is more uniform and the utilization rate is higher, the aerosol generating matrix 10 is not prone to burning, the user experience is relatively high, and it is also easy to process and manufacture.

[0141] For example, referring to Figures 17 to 21 , the channel 10c includes an airway groove 10b, which is provided on the circumferential surface of the aerosol-generating substrate 10. In other words, a portion of the outer wall of the aerosol-generating substrate 10 is recessed to form the airway groove 10b, which is equivalent to the airway groove 10b being visible as a groove on the outer wall of the aerosol-generating substrate 10.

[0142] Referring to Figure 6 , the outer wrapping layer 40 surrounding the aerosol-generating substrate 10 can seal the airway grooves 10b on the periphery of the aerosol-generating substrate 10, allowing the airway grooves 10b to also serve as aerosol airflow channels 10c. This can also increase air intake and aerosol extraction efficiency. Furthermore, if the heating assembly utilizes circumferential heating, this heating method can also be used to adjust the overall heating rate of the aerosol-generating substrate 10, enhancing the user's puffing experience.

[0143] In some embodiments, referring to FIG. 35, all the channels 10c are airway grooves 10b. That is to say, in this embodiment, there are no airway holes 10a.

[0144] In other embodiments, referring to FIGS. 9 to 16 and FIGS. 22 to 32, all the channels 10c are airway holes 10a. That is to say, in this embodiment, there are no airway grooves 10b.

[0145] In still other embodiments, referring to FIGS. 17 to 21, a part of all the channels 10c are airway grooves 10b, and the other part are airway holes 10a. That is to say, in this embodiment, there are both airway holes 10a and airway grooves 10b.

[0146] The shape of the airway holes 10a is not limited. For example, in a plane perpendicular to the length direction of the aerosol generation matrix 10, the cross-sectional shape of the airway holes 10a includes at least one of a circle, an ellipse, a racetrack shape, a polygon, and a sector.

[0147] Among them, the racetrack shape refers to: a shape similar to an athletics track, formed by alternately connecting two semi-circles and two parallel straight sides.

[0148] It should be noted that when the number of airway holes 10a is multiple, the cross-sectional shapes of each airway hole 10a can be completely the same; or some of the airway holes 10a have different cross-sectional shapes, and some of the airway holes 10a also have different cross-sectional shapes. For example, in some embodiments, the cross-sectional shapes of all the airway holes 10a can be circular, elliptical, triangular, rectangular, etc.; in other embodiments, some of the airway holes 10a are triangular, and some of the airway holes 10a are circular, etc. <​​​​​​​​​​It should be noted that in the embodiments of the present application, the structures shown in Figures 17 to 34 do not limit the relative size relationship between the airway holes 10a and the aerosol generating matrix 10. The airway holes 10a in Figures 17 to 34 are only for more clearly illustrating the arrangement relationship of the airway holes 10a, and do not specifically refer to their specific sizes.

[0153] For example, referring to Figures 10, 11, and 16-18, in an embodiment where the heater plug hole 10d has an elongated cross-section, the heater plug hole 10d is located on the central axis of the aerosol-generating substrate 10. In a cross-section perpendicular to the length of the aerosol-generating substrate 10, the airway holes 10a are symmetrically distributed about the heater plug hole 10d. In this embodiment, the elongated cross-section of the heater plug hole 10d effectively increases the medium heating area, improves the overall heating rate and heating uniformity of the medium, and reduces user waiting time.

[0154] For example, referring to Figures 12 to 15 and 23 to 29, in an embodiment where the heater plug hole 10d is a cylindrical hole, the heater plug hole 10d is located on the central axis of the aerosol generating substrate 10. In a plane perpendicular to the length of the aerosol generating substrate 10, the airway holes 10a are symmetrically distributed about the heater plug hole 10d. This ensures that the distances from the heater plug holes to adjacent airway holes 10a are the same. While meeting the heating rate (the distance from the heater 20 is the same, and aerosol is easily released from the airway holes 10a), the matrix arrangement regulates the overall medium heating rate and achieves good heating consistency.

[0155] The arrangement of the airway holes 10a is not limited. It should be noted that in a cross section perpendicular to the length direction of the aerosol matrix, all the airway holes 10a can be evenly distributed or non-uniformly distributed.

[0156] It should be noted that the "uniform distribution" of the airway pores 10a includes the airway pores 10a being arranged in a matrix or concentric circles. In other words, the arrangement of the airway pores 10a is uniform. It is understood that the airway pores 10a may not be uniform within the cross-section of the aerosol-generating substrate 10. In other words, the airway pores 10a may be uniformly distributed, but they do not evenly divide the entire aerosol-generating substrate 10. For example, if the cross-section of the aerosol-generating substrate 10 is circular, the airway pores 10a arranged in a matrix are not evenly distributed within the circular cross-section.

[0157] For example, referring to Figures 16 to 25 and Figures 30 to 32, all airway holes 10a are distributed along multiple trajectory lines. The airway holes 10a on a single trajectory line are linearly arranged along a first direction Z1, while multiple trajectory lines are arranged along a second direction Z2. The first direction Z1 and the second direction Z2 are non-parallel. The first direction Z1 and the second direction Z2 form a two-dimensional coordinate system, which defines the planar arrangement of the airway holes 10a. In other words, the airway holes 10a are arranged in a regular pattern, making it easier to process each airway hole 10a according to a predetermined arrangement pattern during the molding process.

[0158] For example, the airway holes 10a in a single row are equidistant. Equidistant arrangement means that the distance between the centers of two adjacent airway holes 10a is equal. This ensures that the shape and size of the dielectric wall between two adjacent airway holes 10a are substantially the same. This improves the uniformity of aerosol release from the aerosol-generating substrate 10 during heated inhalation, promotes uniform aerosol transmission, and heat distribution, and thus enhances the user's puffing experience.

[0159] It should be noted that the first direction Z1 can be a straight line or a curve; the second direction Z2 can be a straight line or a curve.

[0160] For example, in some embodiments, as shown in FIG23 , the airway holes 10a on a single trajectory are arranged circumferentially around the center of the aerosol-generating substrate 10, while multiple trajectory lines are arranged concentrically along the radial direction of the aerosol-generating substrate 10. Specifically, the first direction Z1 is the circumferential direction around the center of the smokable medium segment, and the second direction Z2 is the radial direction. The airway holes 10a are arranged concentrically.

[0161] For example, when the first and second directions are perpendicular to each other, as shown in Figures 24 and 25 , the distance between two adjacent airway holes 10a on a single trajectory is equal to the distance between two adjacent trajectory lines. This ensures that the dielectric wall thickness between any two adjacent airway holes 10a is uniform, facilitating uniform heating and aerosol release.

[0162] For example, in some embodiments, please refer to Figures 24 and 25, the airway holes are distributed in a matrix pattern. Specifically, the matrix distribution refers to an N*M overall arrangement, where N represents the number of airway holes 10a on a single trajectory line, and M represents the number of trajectory lines. N and M can be the same or different.

[0163] For example, in some other embodiments, referring to FIG. 16 and FIG. 17 , the distribution of the airway holes 10 a is as follows: a distribution after omitting the vertex points on the basis of a matrix distribution.

[0164] In one embodiment, the airway holes 10a on a single trajectory are arranged in a repeating pattern. Repeating pattern means that the airway holes 10a within the same exhaust pore 10a are identical. The diameters of the airway holes 10a on each trajectory can gradually increase as they move radially outward from the aerosol-generating substrate 10. That is, the diameters of the airway holes 10a on different trajectories vary, with the diameters of the airway holes 10a increasing as they move farther from the center of the aerosol-generating substrate 10. For example, referring to FIG. 30 , taking multiple trajectories arranged in a ring as an example, the diameters of the airway holes 10a can gradually increase from the first trajectories near the center of the aerosol-generating substrate 10 to the last trajectories farther from the center of the aerosol-generating substrate 10. Of course, in other embodiments, the airway holes 10a can also be arranged in a matrix, with the diameters of the airway holes 10a on each trajectory gradually increasing as they move radially outward from the aerosol-generating substrate 10.

[0165] In one embodiment, the airway holes 10a on a single trajectory are arranged in a repeating pattern, with the spacing between adjacent airway holes 10a gradually decreasing as the aerosol-generating substrate 10 radially outward moves away from the aerosol-generating substrate 10. This means that the wall thickness of the partition wall between adjacent airway holes 10a on the trajectory can gradually decrease. In other words, the multiple trajectories are not arranged equidistantly; the thickness of the partition wall between adjacent trajectories decreases as the distance from the center of the aerosol-generating substrate 10 increases. For example, using the multiple trajectories arranged in a ring as an example, the wall thickness of the partition wall between adjacent airway holes 10a on the trajectory can gradually decrease from the airway hole 10a on the first trajectory near the center of the aerosol-generating substrate 10 to the airway hole 10a on the last trajectory farther from the center of the aerosol-generating substrate 10. Of course, in other embodiments, the airway holes 10a can also be arranged in a matrix pattern, with the wall thickness of the partition wall between adjacent airway holes 10a on the trajectory decreasing as the distance from the center of the aerosol-generating substrate 10 increases radially outward from the aerosol-generating substrate 10.

[0166] The aerosol generating matrix 10 that is farther away from the center of the aerosol generating matrix 10 and has a larger aperture of the airway hole 10a, and the aerosol generating matrix 10 that is farther away from the center of the aerosol generating matrix 10 and has a smaller wall thickness of the partition wall between the airway holes 10a on two adjacent trajectory lines are closer to the central area of ​​the aerosol generating matrix 10, and the greater the mass per unit volume of the aerosol generating matrix 10. When the central heating method is adapted, the time required for heat to be conducted from the inside to the outside is longer, thereby extending the time for the outer wall position of the aerosol generating matrix 10 to be heated (when a certain amount of heat is supplied to the aerosol generating matrix 10, the greater the mass of the matrix, the longer the time required to be heated to the set temperature), improving the uniformity of aerosol release from the aerosol generating matrix 10, increasing the puffing time and the number of puffs, and at the same time, maintaining the consistency of aerosol release, bringing a comfortable puffing experience to the user.

[0167] In other embodiments, the airway holes 10a on a single trajectory may be arranged repeatedly, and along the radial direction of the aerosol generating matrix 10, the aperture of the outermost single trajectory away from the center of the aerosol generating matrix 10 is larger than the aperture of the inner single trajectory. In other words, only the aperture of the airway holes 10a on the outermost trajectory increases, that is, the aperture of the airway holes 10a on the trajectory farthest from the center of the aerosol generating matrix 10 increases, and the apertures of the airway holes 10a on other trajectory lines except the airway holes 10a on the outermost trajectory are the same. When the aerosol generating matrix 10 of this embodiment is adapted to the central heating method, the time required for heat to be conducted from the inside to the outside is longer, and the time for the outer wall of the aerosol generating matrix 10 to be heated can also be extended, thereby improving the uniformity of aerosol release from the aerosol generating matrix 10, increasing the puffing time and the number of puffs, and at the same time, maintaining the consistency of aerosol release, providing the user with a comfortable puffing experience.

[0168] In other embodiments, as shown in Figures 16 and 17, 24, and 25, a single trajectory line is arranged linearly along a first direction Z1, and multiple trajectory lines are arranged parallel to each other along a second direction Z2, with the first direction Z1 and the second direction Z2 being perpendicular. As shown in Figures 16 and 17, a single trajectory line is arranged linearly along the first direction Z1, and multiple trajectory lines are arranged parallel to each other along the second direction Z2, forming multiple rows of airway holes 10a arranged in a non-matrix configuration. As shown in Figure 25, multiple trajectory lines are arranged in a matrix.

[0169] In a plane perpendicular to the length direction of the aerosol-generating substrate 10 , the outline shape of the aerosol-generating substrate 10 is not limited, for example, it can be circular, elliptical, polygonal, etc., which is not limited here.

[0170] For example, in the embodiments of the present application, the aerosol-generating substrate 10 is described as cylindrical, i.e., the cross-section of the aerosol-generating substrate 10 is substantially circular. The cylindrical aerosol-generating substrate 10 has a regular shape, which can reduce the difficulty of the manufacturing process.

[0171] In some embodiments, the airway hole 10a in the embodiments of the present application extends along a straight line.

[0172] In other embodiments, the airway holes 10a extend along a curve, for example, in a spiral shape. For example, referring to Figures 32 to 34 , the channel 10c includes multiple spiral airways disposed within the aerosol-generating substrate 10. "Curves with non-zero curvature" means that at least a portion of the spiral airway along its extension direction is not a straight line with zero curvature. For example, along its extension direction, the spiral airway may have both non-zero curvature curved segments and zero curvature straight segments, or may have only non-zero curvature curved segments without zero curvature straight segments. In other words, the spiral airway may not extend in a straight line from its starting point to its end point along its extension direction.

[0173] The provision of a spiral airway can increase the surface area of ​​the aerosol-generating matrix 10 (the sidewalls of the spiral airway are equivalent to a portion of the surface of the aerosol-generating matrix 10), allowing heat from the aerosol-generating matrix 10 to enter the interior of the aerosol-generating matrix 10 from the surface of the aerosol-generating matrix 10. Compared to the smoking segment materials in the related art that do not have any airways and directly conduct heat internally, the heating efficiency can be improved. In addition, when the aerosol suction capacity is constant, the spiral airway can extend the airflow path and increase the flow rate of the airflow in the aerosol-generating matrix 10, thereby increasing the impact force of the airflow and enabling the aerosol to be evenly mixed. This can further improve the extraction efficiency and uniformity of the aerosol in the aerosol-generating matrix 10 and enhance the user's puffing experience. In other words, compared to the smoking segment materials in the related art, the aerosol-generating matrix 10 of the embodiment of the present application can improve the user's experience.

[0174] Exemplarily, the number of the spiral air channels is usually two or more, which are symmetrically arranged around the heating element plug hole 10d.

[0175] In other embodiments, referring to Figures 26 to 29 , the channel 10c includes a plurality of airway holes 10a disposed within the aerosol-generating substrate 10. All airway holes 10a are arranged in a single row, i.e., the airway holes 10a are linearly arranged along a first direction Z1. The first direction Z1 can be either a straight line or a curve. In other words, the airway holes 10a are arranged in a regular pattern, making it easier to form each airway hole 10a according to a predetermined pattern during the molding process. For example, the centerline of the heater plug hole 10d along its extension direction coincides with the longitudinal centerline of the aerosol-generating substrate 10, and the airway holes 10a are arranged circumferentially around the center of the heater plug hole 10d.

[0176] For example, referring to Figures 26 to 29 , the airway holes 10a in this embodiment are fan-shaped. Multiple airway holes 10a are evenly arranged around the circumference of the heating element 20. For example, when there are three airway holes 10a, the central angle corresponding to each airway hole 10a is 120°; when there are four airway holes 10a, the central angle corresponding to each airway hole 10a is 90°; and when there are six airway holes 10a, the central angle corresponding to each airway hole 10a is 60°.

[0177] In this embodiment, a radial partition wall is provided between two adjacent airway holes 10a, and the wall thickness of any portion of a single radial partition wall may be the same or different.

[0178] In this embodiment, the fan-shaped airway hole 10a can effectively increase the flow rate of fresh airflow in the airway hole 10a, thereby reducing the proportion of aerosol in the airflow and lowering the temperature of the aerosol after extraction; when the user takes intermittent inhalations, less aerosol is wasted, thereby increasing the utilization rate of the aerosol.

[0179] The specific structure of the heating element 20 is not limited.

[0180] For example, in some embodiments, the heating element 20 has at least an electromagnetic induction unit for inducing changes in an external magnetic field to generate heat. In this embodiment, the power output unit is an induction coil. In this embodiment, energy is transmitted between the power output unit and the heating element 20 in a non-contact manner.

[0181] The specific material of the electromagnetic induction part is not limited, for example, it can be metal, conductive ceramic, or other materials.

[0182] It should be noted that the arrangement of the inductor coil is not limited. It can be arranged on the circumferential side wall of the heating chamber 200a, or on the bottom wall of the heating chamber 200a. There is no limitation here.

[0183] In the above embodiments, the structure of the heating element 20 is not limited. For example, in some embodiments, the heating element 20 is entirely made of metal or conductive ceramic, that is, the entire heating element 20 is an electromagnetic induction portion. In other embodiments, the heating element 20 includes an insulating base and the above-mentioned electromagnetic induction portion, and the electromagnetic induction portion is layered and disposed on the surface of the insulating base.

[0184] In other embodiments, the heating element 20 includes an electric heating portion and a contact portion electrically connected to the electric heating portion, the contact portion being configured to contact an external power supply terminal to cause the electric heating portion to be energized and generate heat. In this embodiment, the power output portion includes two positive power supply terminals and a negative power supply terminal, and the contact portion includes a positive contact and a negative contact, the positive contact being in contact with the positive power supply terminal, and the negative contact being in contact with the negative power supply terminal. In this way, the electric heating portion can be connected to the circuit. When the aerosol generating device 200 is activated, the heating element 20 receives energy and begins to heat the aerosol generating article 100 contained in the aerosol generating device 200. In this embodiment, power is transmitted between the power output portion and the heating element 20 in a contact manner.

[0185] The specific material of the electric heating part is not limited, for example, it can be metal, conductive ceramic, or other materials.

[0186] In the above embodiments, the structure of the heating element 20 is not limited. For example, in some embodiments, the heating element 20 is entirely made of metal or conductive ceramic. In other embodiments, the heating element 20 further includes an insulating base, and the above-mentioned electric heating unit is disposed on the insulating base.

[0187] In a specific embodiment, as shown in Figures 3 and 4, in a cross section perpendicular to the length direction of the aerosol generating matrix 10, the cross section of the heating element plug hole 10d is long or circular, and a sheet-shaped or solid column-shaped heating element 20 is correspondingly provided in the aerosol generating device 200. The sheet-shaped and solid column-shaped heating elements have a good heating rate, a convenient operation method (easy to plug and match with the heating element plug hole 10d) and a low production cost. The heating element 20 is inserted into the heating element plug hole 10d inside the aerosol generating matrix 10 to heat and bake the aerosol generating matrix 10 from the inside to the outside. The heating method can be resistive heating. For example, a resistive film can be coated / printed on the outside of the heating element 20, and the aerosol generating matrix 10 is heated and baked by resistive heating when the power is on. In other embodiments, the heating element 20 can also heat and bake the aerosol generating matrix 10 by infrared radiation when the power is on. In this case, the outer surface of the heating element 20 can be coated with an infrared material.

[0188] In another specific embodiment, as shown in FIG3 below, in a cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross section of the heating element plug hole 10d is circular, and a corresponding hollow tubular heating element 20 is provided in the aerosol generating device 200. This can increase the aerosol capture path (airflow can flow into the aerosol generating substrate 10 from below the heating element), improve the utilization rate of the aerosol generating substrate 10, and reduce energy loss through the hollow tubular heating element 20 (the heating element has low mass and low loss), thereby increasing the single-time endurance of the device and improving the consumer experience. The heating element 20 is inserted into the heating element plug hole 10d inside the aerosol generating substrate 10 to heat and bake the aerosol generating substrate 10 from the inside out. Taking electromagnetic heating as an example of the heating method, the aerosol generating device 200 includes a power supply, a control circuit, and a coil connected to the control circuit. When the coil is energized, a magnetic field is generated. The hollow tubular heating element 20 of the aerosol generating device 200 generates heat under the action of the magnetic field, thereby heating the aerosol generating product 100.

[0189] In another specific embodiment, as shown in FIG2 below, in a cross section perpendicular to the length direction of the aerosol generating matrix 10, the cross section of the heating element plug hole 10d is annular, and the end of the heating element plug hole 10d close to the bottom of the aerosol generating matrix 10 is an open end, which is convenient for inserting the heating element 20 in the aerosol generating device 200, and the end of the heating element plug hole 10d close to the filter section is a closed end to maintain the integrity of the medium. The aerosol generating device 200 is correspondingly provided with a hollow tubular heating element 20, which can provide a larger heat transfer area without reducing the mass of the aerosol generating matrix 10 (total aerosol content), increase the heating uniformity of the aerosol generating matrix 10, and enhance the consumer's puffing experience. The heating element 20 is inserted into the heating element plug hole 10d inside the aerosol generating matrix 10 to heat and bake the aerosol generating matrix 10 from the inside to the outside.

[0190] The following is a brief introduction to eight specific embodiments with reference to the accompanying drawings.

[0191] First embodiment

[0192] Please refer to FIG. 10 and FIG. 11 . In this embodiment, the number of the heating element plug hole 10 d is one.

[0193] 10 , in a cross section perpendicular to the length of the aerosol generating substrate 10 , the cross section of the heating element insertion hole 10 d is in the shape of an elongated strip and is located on the central axis of the aerosol generating substrate 10 . Correspondingly, the heating element 20 is in the shape of a flat sheet.

[0194] Please refer to Figure 11. In this embodiment, the structure of the aerosol generating matrix 10 is substantially the same as that of the first embodiment. The main differences include: in this embodiment, the corners of the elongated heating element plug hole 10d are chamfered to make it easier to insert the heating element 20 into the heating element plug hole 10d.

[0195] In this embodiment, the aerosol-generating substrate 10 is not provided with a channel 10c. It will be appreciated that in other embodiments, the aerosol-generating substrate 10 may also be provided with one or more channels 10c.

[0196] In this embodiment, a heating element insertion hole 10d is machined when the aerosol-generating matrix 10 is prepared. During use, the heating element 20 is simply inserted into the heating element insertion hole 10d. Thus, when the heating element 20 is inserted into the heating element insertion hole 10d, the heating element 20 does not compress the structure surrounding the heating element insertion hole 10d to a small extent or at all, thereby maintaining a relatively uniform matrix density for the aerosol-generating matrix 10 and making it less likely that the outer wrapping layer 40 surrounding the aerosol-generating matrix 10 will deform or rupture. Furthermore, when the aerosol-generating matrix 10 is separated from the aerosol-generating device 200 after being heated, the aerosol-generating matrix 10 is less likely to adhere to the heating element or fall into the heating chamber 200a, thereby less likely to contaminate the heating chamber 200a. This can reduce the user's cleaning workload and thereby improve the user's user experience.

[0197] Second embodiment

[0198] 12 to 15 , in this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the first embodiment, with the main differences including: in this embodiment, the heating element plug hole 10 d is a cylindrical hole.

[0199] In this embodiment, the aerosol-generating substrate 10 is not provided with a channel 10c. It will be appreciated that in other embodiments, the aerosol-generating substrate 10 may also be provided with one or more channels 10c.

[0200] Third embodiment

[0201] 16 , 22 and 30 , in this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the first embodiment, with the main differences including: in this embodiment, the channel 10 c includes a plurality of airway holes 10 a .

[0202] All the air passage holes 10 a are arranged in mirror symmetry with respect to the heating element 20 .

[0203] The airway hole 10a extends in a straight line.

[0204] In the arrangement of the airway holes 10a shown in Figure 16, the first direction Z1 and the second direction Z2 are both straight lines. However, the number of airway holes 10a in at least two exhaust airway holes 10a is different, and the airway holes 10a shown in Figures 22 and 30 are arranged in concentric circles.

[0205] In this embodiment, no airway groove 10b is provided on the circumferential outer surface of the aerosol substrate. It is understood that in other embodiments, one or more airway grooves 10b may also be provided on the circumferential outer surface of the aerosol substrate.

[0206] Fourth embodiment

[0207] 17 and 18 , in this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the third embodiment, with the main differences including: in this embodiment, an airway groove 10 b is provided on the circumferential outer surface of the aerosol substrate.

[0208] All the air passage holes 10 a are arranged in mirror symmetry with respect to the heating element 20 .

[0209] The airway hole 10a extends in a straight line.

[0210] In the arrangement of the airway holes 10a shown in Figure 17, the first direction Z1 and the second direction Z2 are both straight lines. However, the number of airway holes 10a in at least two exhaust airway holes 10a is different. As shown in Figure 18, the airway holes 10a are arranged in concentric circles.

[0211] Fifth embodiment

[0212] 24 and 25 , in this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the third embodiment, with the main differences including: in the arrangement of the airway holes 10a, the first direction Z1 and the second direction Z2 are perpendicular.

[0213] The airway hole 10a extends in a straight line.

[0214] In the arrangement of the airway hole 10a, as shown in Figure 24, when the number of single trajectory lines is odd, the heating element plug hole 10d coincides with the middle airway hole 10a. As shown in Figure 25, when the number of single trajectory lines is even, the heating element plug hole 10d does not coincide with the middle airway hole 10a.

[0215] In this embodiment, no airway groove 10b is provided on the circumferential outer surface of the aerosol substrate. It is understood that in other embodiments, one or more airway grooves 10b may also be provided on the circumferential outer surface of the aerosol substrate.

[0216] Sixth embodiment

[0217] Please refer to FIG. 27 to FIG. 29 . In this embodiment, the heating element plug hole 10 d is a cylindrical hole and is located on the central axis of the aerosol matrix.

[0218] The airway holes 10a are fan-shaped. The multiple airway holes 10a are evenly arranged around the circumference of the heating element 20. For example, when there are three airway holes 10a, the central angle corresponding to each airway hole 10a is 120°; when there are four airway holes 10a, the central angle corresponding to each airway hole 10a is 90°; when there are six airway holes 10a, the central angle corresponding to each airway hole 10a is 60°.

[0219] In this embodiment, a radial partition wall is provided between two adjacent airway holes 10a, and the wall thickness of any portion of a single radial partition wall may be the same or different.

[0220] In this embodiment, the fan-shaped airway hole 10a can effectively increase the flow rate of fresh airflow in the airway hole 10a, thereby reducing the proportion of aerosol in the airflow and lowering the temperature of the aerosol after extraction; when the user takes intermittent inhalations, less aerosol is wasted, thereby increasing the utilization rate of the aerosol.

[0221] Seventh embodiment

[0222] Please refer to Figure 26. In this embodiment, an arc-shaped partition wall is added to the airway hole 10a in the sixth embodiment, separating the single airway hole 10a in the sixth embodiment into multiple airway holes 10a arranged radially. The volume of the airway holes 10a is smaller and the number is greater. The multiple airway holes 10a are distributed in a spider web-like shape.

[0223] The thickness of the arcuate partition wall is the same as that of the radial partition wall. In other embodiments, the thickness of the two walls can also be different.

[0224] Along the radial direction, the thickness of each layer of the arc-shaped partition walls is the same. In other embodiments, the thickness of each layer of the arc-shaped partition walls may also be different. For example, the thickness gradually increases or decreases along the radial inward direction.

[0225] The radial width of each layer of airway holes 10a is the same. In other embodiments, the thickness of each layer of arc-shaped partition walls may also be different. For example, the width gradually increases or decreases in the radial inward direction.

[0226] In this embodiment, the airway holes 10a are not connected to each other, that is, the airflow in any airway hole 10a will not flow into other airway holes 10a.

[0227] In this embodiment, the radial partition walls of each layer of airway holes 10a are aligned, that is, the radial partition walls are located on the same straight line.

[0228] Eighth embodiment

[0229] Referring to Figures 32 to 34 , the airway aperture 10a extends in a spiral, i.e., a spiral airway. This spiral airway helps increase aerosol extraction efficiency (under the same draw resistance, by increasing the path length of the gas in the spiral airway, increasing the airflow velocity and the contact area between the airflow and the airway aperture 10a, thereby increasing aerosol extraction efficiency).

[0230] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0231] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

DEPCT6913 / 11 / 25681. The aerosol-generating substrate is column-shaped, and the interior of the aerosol-generating substrate is provided with a heating element port, and the heating element port extends along the length of the aerosol-generating substrate and passes through at least one end of the aerosol-generating substrate along the length direction.

2. The aerosol-generating substrate of claim 1 is provided with a channel, and the channel extends along the length of the aerosol-generating substrate and passes through at least one end of the aerosol-generating substrate along the length direction.

3. The aerosol-generating substrate of claim 2 is provided with one heating element port, which extends along the length of the aerosol-generating substrate, and a heating element port is provided on the central axis of the aerosol-generating substrate.4.The aerosol-generating substrate of claim 3, where the channel comprises more than one air hole, has more than one air hole arranged on the inside of the aerosol-generating substrate and on a cross-section perpendicular to the longitudinal direction of the heating element hole, which is a stretched strip, and the air holes are symmetrically distributed around the heating element hole.

5. The aerosol-generating substrate of claim 3, where the channel comprises more than one air hole, has more than one air hole arranged on the inside of the aerosol-generating substrate, which is a columnar hole and on a plane perpendicular to the longitudinal direction of the aerosol-generating substrate, and the air holes are symmetrically distributed by using the heating element hole as the starting point. 6.

7. The aerosol-generating substrate of Reputation 3, where the channel is composed of more than one air hole, more than one air hole is arranged on the inside of the aerosol-generating substrate, the center of the heated element hole is aligned in the expansion direction opposite to the center of the aerosol-generating substrate in the longitudinal direction, and the air holes are arranged in a circumferential direction around the center of the heated element hole.

8. The aerosol-generating substrate of Reputation 3, where the channel is composed of more than one air hole, more than one air hole is arranged on the inside of the aerosol-generating substrate, and all air holes are distributed on more than one trajectory, where the air holes on each trajectory are arranged linearly in the first direction, more than one trajectory is arranged in a second direction, and the first direction is not parallel to the second direction.The aerosol substrate of claim 7 where the air holes on each trajectory line are arranged linearly in the first direction, more than one trajectory line is arranged parallel to the second direction, and the first direction is perpendicular to the second direction.

9. The aerosol substrate of claim 8 where the distance between two adjacent air holes on each trajectory line is equal to the distance between two adjacent trajectory lines.

10. The aerosol substrate of claim 7 where the air holes on each trajectory line are arranged in a certain direction.

11. In the aerosol-generating substrate of claim 7, where air holes on each trajectory are repeatedly arranged in a direction extending outward in the radial direction of the aerosol-generating substrate, the opening of the air holes on each trajectory gradually increases and / or the distance between two adjacent air holes on trajectories gradually decreases. 12.

13. Any aerosol-generating substrate of claims 1 to 11 in which the heating element hole passes through two opposite ends of the aerosol-generating substrate in the longitudinal direction and in a plane perpendicular to the longitudinal direction, the cross-sectional shape of the aerosol-generating substrate is a circle.

14. Any aerosol-generating substrate of claims 2 to 11 in which the channel consists of more than one helical air passage, the helical air passages are provided on the inside of the aerosol-generating substrate and at least part of the region of the helical air passages in the expansion direction has a curvature not equal to 0.

15. Any aerosol-generating substrate of claims 2 to 11 in which the channel consists of air troughs and air troughs are provided on the circumferential surface of the aerosol-generating substrate. 16.

17. Any one of the aerosol-generating substrates of claims 2 through 11 in which the aerosol-generating substrate is an aggregation of micropore particles, among which more than one pore is interconnected to form micro-air passages connected to channels and / or heating element holes, and the cross-sectional area of ​​each micropore ranges from 0.7 nm to 710 µm or the hydraulic diameter of the micropore ranges from 10 nm to 30 µm.

17. Any one of the aerosol-generating substrates of claims 1 through 3 in which, on the cross-section perpendicular to the length direction of the aerosol-generating substrate, the cross-sectional shape of the heating element hole is a stretched band, circle, ellipse, ring, arc, circle, zigzag, or polygon. 18.

19. An aerosol substrate of any one of the claims 1 through 3 in which the cross-sectional shape of the heated element insertion hole is a stretched strip, the length of the cross-section ranges from 1 mm to 40 mm and / or the width of the cross-section ranges from 0.05 mm to 3 mm.

20. An aerosol substrate of any one of the claims 1 through 3 in which the cross-sectional shape of the heated element insertion hole is a circle and the opening of the heated element insertion hole ranges from 0.1 mm to 3 mm.

21. An aerosol substrate of any one of the claims 1 through 3 in which the heated element insertion hole is a columnar hole and the cross-sectional area of ​​the heated element insertion hole ranges from 0.01 sq mm to 7.1 sq mm.Aerosol-generating products comprising: the aerosol-generating substrate of any one of the patents 1 through 20; a functional part positioned at one end of the aerosol-generating substrate along its length and comprising at least a filter for aerosol filtration; and an outer envelope enclosing the functional part and the outer envelope along the circumference of the aerosol-generating substrate.

22. Aerosol-generating products of patent 21 in which the functional part is additionally comprising a cooling part and the cooling part is positioned between the filter and the aerosol-generating substrate.

23. Aerosol-generating devices for use with aerosol-generating products of patent 21 or 22 in which the device is comprising a heating element; the heating element is comprising a heating element and the heating element is arranged to be inserted into the heating element hole and heats the aerosol-generating substrate to form the aerosol.

Images