WO2024174651A1 - Aerosol generation substrate, aerosol generation product, and aerosol generation device - Google Patents

Abstract

An aerosol generation substrate (10) and an aerosol generation product (100). The aerosol generation substrate (10) is columnar, and has a heating element insertion-connection hole (10d) inside, wherein the heating element insertion-connection hole (10d) extends in a lengthwise direction of the aerosol generation substrate (10), and penetrates at least one end of the aerosol generation substrate (10) in the lengthwise direction.

Description

Aerosol generating substrate, aerosol generating product and aerosol generating device

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

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

Smoking articles include smoking articles that form aerosols by ignition and smoking articles that form aerosols by heating without burning. In a typical smoking article that heats without burning, it contains an aerosol-generating matrix such as tobacco raw materials, flavor raw materials and/or atomizers that can volatilize when heated to produce 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 be emitted. The aerosol-generating matrix will not burn, and the aerosol-generating matrix is loaded with the atomizer and released by high-temperature heating when used to form smoke.

In the prior art, a heating body is provided in the heating chamber of the aerosol generating device. When inhalation is required, the smoking product is inserted into the heating chamber of the aerosol generating device, and the heating body heats the smoking product. When the aerosol generating matrix is separated from the heating body after being heated, 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 the cleaning is improper.

Summary of the invention

In view of this, the present application hopes to provide an aerosol generating substrate, an aerosol generating product and The aerosol generating device and the aerosol generating matrix are not easy to adhere to the heating element or fall into the heating chamber, which can reduce the cleaning workload of the user.

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 penetrates at least one end of the aerosol generating substrate along the length direction.

In one embodiment, the aerosol-generating substrate has a channel, which extends along the length direction of the aerosol-generating substrate and penetrates at least one end of the aerosol-generating substrate along the length direction.

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.

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 a cross section perpendicular to the length direction of the aerosol generating matrix, the cross section of the heating element plug hole is in the shape of an elongated strip, and the airway holes are symmetrically distributed about the heating element plug hole.

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 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 heating element plug hole about the origin.

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.

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

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

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.

In one embodiment, the airway holes on a single trajectory are arranged in 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.

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.

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.

In one embodiment, the aerosol generating substrate is a unitary structure.

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.

In one embodiment, the channel includes a plurality of spiral air channels, and the spiral air channels are arranged inside the aerosol generating substrate, and at least a portion of the spiral air channels along the extension direction is in the shape of a curve with a curvature not equal to 0.

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

In one embodiment, the aerosol generating matrix is a particle combination, micropores are formed between particles of the particle combination, a plurality of the micropores are connected to form micro airways connected to the channel and/or the heating element plug hole, and the cross-sectional area of the micropores is ^{0.7nm2-710μm2} ; or the hydraulic diameter of the micropores is 10nm- ^30μm .

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 strip, a circle, an ellipse, a ring, an arc, a sawtooth or a polygon.

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-40 mm; and/or,

The width of the cross section is 0.05 mm-3 mm.

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.

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

The present application also provides an aerosol generating product, including:

An aerosol generating substrate as described in any one of the above;

A functional section, arranged at one end of the aerosol generating substrate along the length direction, comprising at least a filtering section for filtering aerosol;

The outer wrapping layer wraps around the functional segment and the aerosol generating substrate.

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.

The present application also provides an aerosol generating device for use with the above-mentioned aerosol generating product, wherein the aerosol generating device includes a heating component, the heating component includes a heating element, and the heating element is inserted into the heating element plug hole and heats the aerosol generating product. into a matrix to generate an aerosol.

The aerosol generating matrix, aerosol generating product and aerosol generating device provided by the embodiments of the present application, wherein the aerosol generating matrix is columnar, 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 penetrates at least one end of the aerosol generating matrix along the length direction. By arranging 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 and matched with the heating element plug hole, so that it is convenient to insert the heating element into the aerosol generating matrix, and the structure around the heating element plug hole will not be squeezed, so that the aerosol generating matrix maintains a relatively uniform matrix density, and it is not easy to have the problem of deformation or rupture of the outer wrapping layer wrapped around the outer 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 experience.

BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

FIG5 is a schematic diagram of the structure of an aerosol generating product according to an embodiment of the present application;

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

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

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

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

FIG10 is a schematic diagram of the structure of a second aerosol generating substrate according to an embodiment of the present application;

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

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

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

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

FIG15 is a schematic diagram of the structure of a seventh aerosol generating substrate according to an embodiment of the present application;

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

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

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

FIG. 19 is a schematic structural diagram of an eleventh aerosol-generating substrate according to an embodiment of the present application; FIG. 20 is a cross-sectional view of a twelfth aerosol-generating substrate according to an embodiment of the present application;

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

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

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

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

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

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

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

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

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

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

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

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

FIG33 is a cross-sectional view of FIG32;

FIG34 is a perspective view of FIG32;

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

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

It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present 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 the present application and should not be regarded as an improper limitation on the present application.

The 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 penetrates at least one end of the aerosol generating matrix 10 along the length direction.

The aerosol generating substrate 10 is used to generate 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 may be a cylindrical shape (i.e., a circular cross-sectional shape), a prismatic shape (i.e., a polygonal cross-sectional shape), an elliptical cylindrical shape (i.e., an elliptical cross-sectional shape), etc., which is not limited here.

Exemplary, the aerosol generating matrix 10 is a particle combination, also referred to as a powder combination, which is a reconstituted tobacco medium, for example, a reconstituted tobacco medium containing components such as smoke-generating agent and tobacco. The aerosol generating matrix 10 is an integrated structure, for example, an integrated structure that can be formed by extrusion molding, injection molding or extrusion process. Wherein, extrusion molding refers to adding a raw material mixture into an extruder, and the material is heated and plasticized by the action between the extruder barrel and the screw, and is pushed forward by the screw, and is continuously made into a processing method of various cross-section products or semi-finished products by the mold of the extruder discharge port. The medium structure formed by extrusion molding is strip-shaped. In this way, after the aerosol generating matrix 10 is heated and sucked or stops being heated, it is an integrated medium, and it is not easy to disintegrate and fall off, and the problem that the thin sheet, filament or loose particle aerosol generating matrix 10 in the prior art appears, such as the problem of thin sheet loosening, filamentous component, particle component falling off, and being difficult to clean, and the problem of uneven components.

The aerosol generating substrate 10 has a heating element plug hole 10d inside, and the heating element plug hole 10d extends along the length direction of the aerosol generating substrate 10. The longitudinal extension of the gel generating matrix 10 and the heating element plug hole 10d are used for plugging and matching with the heating element 20 of the aerosol generating device 200.

The heating element plug hole 10d penetrates at least one end of the aerosol generating substrate 10 along the length direction, which means that the heating element plug hole 10d can penetrate the opposite ends of the aerosol generating substrate 10 along the length direction (see Figure 20), or one end of the heating element plug hole 10d penetrates the end surface of the aerosol generating substrate 10 along the length direction, and the other end of the heating element plug hole 10d is a blind end (see Figure 21). It can be understood that, compared with the heating element plug hole 10d penetrating one end of the aerosol generating substrate 10 along the length direction, the heating element plug hole 10d penetrating both ends of the aerosol generating substrate 10 along the length direction is more conducive to the release of aerosol.

The embodiment of the present application further provides an aerosol generating product, please refer to Figures 5 to 8, which includes a functional segment 30, an outer wrapping layer 40, and an aerosol generating substrate 10 of any embodiment of the present application.

It should be noted that the aerosol generating product 100 generates aerosols by means of the aerosol generating substrate 10, and the functional segment 30 is not used to generate aerosols. The functional segment 30 is arranged at one end of the aerosol generating substrate 10 along the length direction. Please refer to Figures 6 to 8, the functional segment 30 at least includes a filter segment 31 for filtering aerosols. 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.

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 heating without burning. In the embodiment of the present application, the aerosol generating product 100 is used for inhalation by heating without burning as an example.

An embodiment of the present application also provides an aerosol generating device for use in conjunction with the sol generating product provided in the 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 plug hole 10d of the aerosol generating substrate 10 and heat the aerosol generating substrate 10 to generate an aerosol.

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

In the embodiment 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 the longest. Specifically, the arrangement direction of the functional segment 30 and the aerosol-generating substrate 10 is consistent with the length direction; the direction in which the aerosol-generating product 100 is inserted into the heating chamber 200a and the direction in which the aerosol-generating product 100 is taken out of 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.

For example, when the appearance of the aerosol generating substrate 10 is cylindrical, 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 appearance of the aerosol generating substrate 10 is a rectangular parallelepiped, the length direction is still the direction defined above, that is, the arrangement direction of the functional segments 30 and the aerosol generating substrate 10, or the direction in which the heating chamber 200a takes and places the aerosol generating product 100. The length direction of the aerosol generating substrate 10 can be any direction of the length, width, and height of the rectangular parallelepiped.

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, or height of the rectangular parallelepiped.

The aerosol generating substrate 10 of the embodiment of the present application is processed with a heating element plug hole 10d when preparing the aerosol generating substrate 10. 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 is The structure around the heating element plug hole 10d is not squeezed to a certain 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 circumference of the aerosol generating matrix 10 is not easily deformed or broken. 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 not easy to adhere to the heating element, or fall into the heating chamber 200a, and is not easy to contaminate the heating chamber 200a, which can reduce the user's cleaning workload and thus improve the user's experience.

Exemplarily, the aerosol generating matrix 10 is an integrated structure. Specifically, the aerosol generating matrix 10 can be directly processed into a desired shape through a mold, rather than being connected together by a plurality of independent sub-blocks through bonding or other means, so that the aerosol generating matrix 10 has a good structural strength and is not easy to disperse.

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

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

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.

In some embodiments, see Figures 6 and 8 , the functional section 30 only includes the filtering section 31. In other embodiments, see Figure 7 , in addition to the filtering section 31, it also includes a supporting section (not shown) and/or a cooling section 32, and the supporting section and/or the cooling section 32 are disposed between the aerosol generating substrate 10 and the filtering section 31.

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.

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 (butyleneadipate-co-terephthalate), PP (Polypropylene), acetate fiber, and acrylic fiber materials.

The materials of the filter section include but are 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.

The materials of the cooling section 32 and the filtering section may be the same or different.

The support section has a certain structural strength and plays an axial limiting role on the aerosol generating substrate 10. Specifically, when the aerosol generating article 100 is inserted into the heating chamber 200a in the aerosol generating device 200, or when the heating element is inserted into the aerosol generating substrate 10, the support section provides a reaction force to the aerosol generating substrate 10 to prevent the aerosol generating substrate 10 from moving in the axial direction.

The specific components of the aerosol generating matrix 10 are not limited herein. For example, in one embodiment, the aerosol generating matrix 10 may include plant components, auxiliary components, smoke generating agent components, adhesive components, and the like.

In one embodiment, the plant component is one or more combinations of powders formed by crushing tobacco raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, flavor plants, etc. The plant component is used to generate an aerosol having nicotine when heated.

In one embodiment, the auxiliary agent component can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant component, and the inorganic filler also has micropores 10e, which can increase the porosity of the wall material after the plant component is formed, thereby increasing the aerosol release rate.

The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the particles, reduce the friction between the particles, make the overall density of the particle distribution more uniform, and also reduce the pressure required for mold molding and reduce the wear of the mold.

The emulsifier includes one or more combinations of polyglycerol fatty acid ester, Tween-80 and polyvinyl alcohol. Emulsifiers (also called surfactants) can reduce the interfacial tension of water-soluble and water-insoluble components in a mixed system and form a relatively strong film on the surface of the droplets or form a double electric layer on the surface of the droplets due to the charge given by the emulsifier, preventing the droplets from aggregating with each other and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

In one embodiment, the function of the smoke agent component is to generate a large amount of steam when heated, thereby increasing the amount of smoke in the smoking product. The smoke 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 monoacetin, diacetin or triacetin); 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, diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate) or one or more combinations thereof.

In one embodiment, the adhesive component is a natural plant-extracted, non-ionized modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive is used to bond the particles together and is not easy to loosen. In addition, it improves the water resistance of the aerosol generating matrix 10, is harmless to the human body, and has a certain health care effect.

For example, referring to Figures 9 to 34, the aerosol-generating substrate 10 is cylindrical, that is, the cross-sectional profile of the aerosol-generating substrate 10 is a regular circle or a substantially circular shape on a plane perpendicular to the length direction of the aerosol-generating substrate 10. The cylindrical aerosol-generating substrate 10 has a regular shape, which can reduce the difficulty of the manufacturing process.

In one embodiment, the aerosol generating substrate 10 has a channel 10c, which extends along the length direction of the aerosol generating substrate 10 and passes through 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.

The channel 10c passes through at least one end of the aerosol generating substrate 10 along the length direction, that is, the channel 10c may be two opposite ends of the aerosol generating substrate 10 along the length direction (please refer to FIG. 20 ), and the airflow may 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.

Of course, referring to FIG. 21 , one end of the channel 10c may penetrate the end face of the aerosol generating substrate 10 along the length direction, and the other end of the channel 10c may be a blind end. In particular, each channel 10c as shown in FIG. 21 penetrates the same end of the aerosol generating substrate 10 along the length direction. In other embodiments, part of the channel 10c may penetrate one end of the aerosol generating substrate 10 along the length direction, and another part of the channel 10c may penetrate the other end of the aerosol generating substrate 10 along the length direction.

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.

The channel 10c can increase the surface area of the aerosol generating matrix 10, facilitate heat transfer, and improve heating efficiency. The aerosol in the channel 10c is transported to the suction end under the action of the suction negative pressure. The channel 10c can reduce the suction resistance of the user's suction 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.

It should be noted that, referring to Figure 36, the aerosol generating matrix 10 is a particle combination, and micropores 10e are formed between the particles of the particle combination, 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.

The channel 10c and the micro airway can increase the surface area of the aerosol generating matrix 10, facilitate heat transfer, and improve heating efficiency. The medium of the aerosol generating matrix 10 releases aerosol when heated, and is collected in the channel 10c through the gaps between the wall materials or the micro airway. The aerosol released by the atomized medium exposed to the airway hole 10a (i.e., the atomized medium located on the inner wall surface of the airway hole) can be directly released to the airway hole 10a. The aerosol between adjacent airway holes 10a can also circulate with each other through the micro airway. It is transported to the suction end under the action of pressure.

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.

Illustratively, the cross-sectional area of the micropore 10e is ^0.7nm2 (square nanometer) ^-710μm2 (square micrometer), for example, ^1nm2 , ^10nm2 , ^25nm2 , ^{30nm2 , 40nm2 , 50nm2 , 60nm2 , 70nm2 , 80nm2} , 100nm2 ^, 200nm2, 300nm2, 400nm2 ^, 500nm2, 600nm2, 700nm2, ^800nm2 , ^900nm2 , ^100μm2 , ^200μm2 , ^300μm2 , ^400μm2 , ^500μm2 , ^600μm2 , ^700μm2 , etc.

When the cross-sectional area of the micropores 10e is less than 0.7nm ² , the effective components in the medium are not easy to volatilize into the airway holes 10a, which will lead to a decrease in the medium utilization rate; and when the cross-sectional area range of the micropores 10e in the medium body is greater than 710μm ² , it will cause uneven heat conduction in the micropores 10e, resulting in a decrease in the suction experience. Therefore, in this embodiment, controlling the cross-sectional area of the micropores 10e to 0.7nm ² -710μm ² can take into account both the medium utilization rate and the suction experience.

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

Exemplarily, the hydraulic diameter of the micropore 10e is 10 nm (nanometer)-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.

When the hydraulic diameter of the micropores 10e is less than 10nm, the effective ingredients in the aerosol generating matrix 10 are not easy to volatilize into the airway holes 10a, which will lead to a decrease in the matrix utilization rate; and when the hydraulic diameter of the micropores 10e of the aerosol generating matrix 10 is greater than 30μm, it will lead to uneven heat conduction in the micropores 10e, resulting in a decrease in the suction experience. Therefore, in this embodiment, controlling the hydraulic diameter of the micropores 10e to 10nm-30μm can take into account both the matrix utilization rate and the suction experience.

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

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.

Exemplarily, the number of the heating element plug hole 10d is one and extends along the length direction of the aerosol generating substrate 10. That is, the size of the heating element 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.

The arrangement position of the heating element insertion hole 10d in the plane perpendicular to the length direction of the aerosol generating substrate 10 is not limited.

For example, please refer to Figures 10 to 35, the heating element plug hole 10d is set on the central axis of the aerosol generating substrate 10. The central axis is a virtual reference line, and in a plane perpendicular to the length direction of the aerosol generating substrate 10, the central axis is located at the center of the cross section of the aerosol generating substrate 10. In this embodiment, the heating element 20 is inserted into the heating element plug hole 10d, so that the heating of the aerosol generating substrate 10 as a whole is distributed in a radial manner, and the heating of the entire circumference around the heating element 20 is relatively uniform, so that the aerosol generating substrate 10 can release aerosol stably and evenly.

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.

The specific shape of the heating element plug hole 10d is not limited. For example, in the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross-sectional shape of the heating element plug hole 10d can be a long 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 as shown in Figure 9, an arc, a sawtooth, or a polygon as shown in Figures 14 and 15.

For example, referring to FIG. 10 , FIG. 11 , and FIG. 16 to FIG. 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 10 d is in the shape of an elongated strip, and the heating element plug hole 10 d extends along the length direction of the aerosol generating substrate 10 .

Among them, in the cross section perpendicular to the length direction of the aerosol generating substrate 10, the long strip of heat The cross-sectional shape of the heating element insertion hole 10 d is not limited, for example, V-shaped, linear, arc-shaped, etc. At this time, the heating element 20 matched with the heating element insertion hole 10 d is in sheet shape and extends along the length direction of the aerosol generating substrate 10 .

Specifically, 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 in the shape of a long strip, the length of the cross section is 1mm-40mm, and the width of the cross section is 0.05mm-3mm. By controlling the length and width of the heating element plug hole 10d, it is convenient to control the contact area between the heating element 20 and the aerosol generating substrate 10, which is beneficial to control the heating efficiency.

Exemplarily, the length of the cross section of the heating element plug hole 10d is 10 mm-20 mm.

Exemplarily, the width of the cross section of the heating element plug hole 10d is 0.3 mm-0.8 mm.

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

Among them, in the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross-sectional shape of the columnar hole is not limited, for example, circular, elliptical, polygonal, etc. At this time, the heating element 20 matched with the heating element plug hole 10d is columnar and extends along the length direction of the aerosol generating substrate 10. The cross-sectional shape of the columnar heating element 20 is not limited, for example, circular, elliptical, polygonal, etc.

In some embodiments, 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 the hole diameter of the heating element plug hole is 0.1mm-3mm, for example, 0.1mm, 0.2mm, 0.4mm, 0.5mm, 0.8mm, 1mm, 1.3mm, 1.6mm, 1.8mm, 2mm, 2.1mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, etc.

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 ^{0.01mm2-7.1mm2} . For example, ^0.01mm2 , ^0.08mm2 , ^0.4mm2 , 0.5mm2, 0.8mm2, ^{1mm2 ,} 1.6mm2 ^, 1.8mm2 ^{, 2mm2 ,} 3mm2 ^{, 3.2mm2} , ^4mm2 , ^5mm2 , 6mm2, 6.5mm2, 7mm2, 8mm2, 9mm2, 10mm2, 11mm2, 12mm2, 13mm2, 14mm2, 15mm2, 16mm2, 17mm2, 18mm2, 19mm2, 20mm2, 21mm2, 22mm2, 23mm2, 24mm2, 25mm2, 26mm2, 27mm2, 28mm2, 29mm2, ^30mm2 , 31mm2, 32mm2, ^33mm2 , 34mm2, ^35mm2 6.8mm ² , 7mm ² , 7.1mm ² , etc.

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

It should be noted that the number of channels 10c is not limited, and may be one or more.

Exemplarily, referring to Figures 16 to 34, the channel 10c includes an airway hole 10a, and the airway hole 10a is arranged inside the aerosol generating substrate 10. That is, at least a portion of the channel 10c serves as the airway hole 10a. In a cross section perpendicular to the length direction of the aerosol generating substrate 10, the hole walls of the airway hole 10a are connected end to end to form a closed hole.

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.

Exemplarily, the cross-sectional area of the airway hole 10a is 0.0019 ^{mm2-30 mm2} (square millimeters), for example, 0.002 ^mm2 , 0.1 ^mm2 , 0.2 ^mm2 , 0.6 ^mm2 , ¹ mm2, ^{2 mm2} , 5 ^mm2 , 7 ^mm2 , 10 ^mm2 , 12 ^mm2 , 16 ^mm2 , 18 ^mm2 , 20 ^mm2 , 21 ^mm2 , 22 ^mm2 , 25 ^mm2 , 26 mm2, ^{28 mm2} , 29 ^mm2 , 30 ^mm2 , etc.

When the cross-sectional area of the airway holes 10a is greater than 30 ^mm2 , 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, 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 last few puffs release a small amount of aerosol), which affects the user's suction experience.

When the cross-sectional area of the airway hole 10a is less than 0.0019 ^mm2 , the difficulty of the molding process will be significantly increased, the size of the airway hole 10a is difficult to control, and the defective rate of the aerosol generating matrix 10 will be increased. Furthermore, the aerosol-generating matrix 10 is prone to problems of large suction resistance and low utilization rate.

When the cross-sectional area of the airway hole 10a is in the range of 0.0019 ^mm2 to ³⁰ mm2, 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.

Exemplarily, referring to Figures 17 to 21, the channel 10c includes an airway groove 10b, and the airway groove 10b is arranged on the circumferential surface of the aerosol generating substrate 10. That is, a part of the outer wall of the aerosol generating substrate 10 is recessed to form the airway groove 10b, which is equivalent to seeing the groove-shaped airway groove 10b on the outer wall of the aerosol generating substrate 10.

Referring to Fig. 6, the outer wrapping layer 40 on the periphery of the aerosol generating substrate 10 can seal the airway groove 10b on the periphery of the aerosol generating substrate 10, so that the airway groove 10b can also serve as the airflow channel 10c of the aerosol, thereby increasing the air intake and the aerosol extraction efficiency. In addition, if the heating method of the heating component is circumferential heating, the overall heating rate of the aerosol generating substrate 10 can also be adjusted by this heating method to improve the user's inhalation experience.

In some embodiments, please refer to FIG. 35 , all channels 10c are airway grooves 10b , that is, in this embodiment, there are no airway holes 10a .

In other embodiments, please refer to FIG. 9 to FIG. 16 and FIG. 22 to FIG. 32 , all channels 10c are airway holes 10a , that is, in this embodiment, there is no airway groove 10b .

In some other embodiments, please refer to Figures 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.

The shape of the airway hole 10a is not limited. For example, in a plane perpendicular to the length direction of the aerosol generating substrate 10, the cross-sectional shape of the airway hole 10a includes at least one of a circle, an ellipse, a racetrack, a polygon, and a sector.

Among them, the runway shape refers to: a shape similar to an athletics track, composed of two semicircles and two parallel straight sides alternately connected.

It should be noted that when there are multiple airway holes 10a, the cross-sectional shapes of the airway holes 10a can be exactly the same; or some of the airway holes 10a can have different cross-sectional shapes, and some of the airway holes 10a can 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.

Exemplarily, the number of airway holes 10a is multiple, and the shape and size of each airway hole 10a are the same. For example, all airway holes 10a are equilateral triangles, and the side lengths of all equilateral triangles are equal. For another example, all airway holes 10a are circular with the same radius. In this way, each airway hole 10a of the aerosol generating matrix 10 can be formed based on the same molding die, reducing manufacturing costs.

In the embodiment where there are multiple airway holes 10a, the arrangement of the airway holes 10a is not limited.

For example, all the airway holes 10a are arranged in a matrix, a circular arrangement, a "米" shape, a "井" shape, 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 specify their specific sizes.

For example, referring to FIG. 10, FIG. 11, and FIG. 16 to FIG. 18, in the embodiment where the cross section of the heating element plug hole 10d is in the shape of an elongated strip, the heating element plug hole 10d is located on the central axis of the aerosol generating substrate 10, and the airway holes 10a are symmetrically distributed about the heating element plug hole 10d in the cross section perpendicular to the length direction of the aerosol generating substrate 10. In this embodiment, the heating element plug hole 10d with an elongated cross section can effectively increase the medium heating area, improve the overall heating rate and heating uniformity of the medium, and reduce the user waiting time.

For example, referring to FIGS. 12 to 15 and 23 to 29, the heating element plug hole In the embodiment where 10d is a cylindrical hole, the heating element plug hole 10d is located on the central axis of the aerosol generating substrate 10, and the airway holes 10a are symmetrically distributed about the heating element plug hole 10d in a plane perpendicular to the length direction of the aerosol generating substrate 10. This makes the distance from the heating element plug hole to the adjacent airway hole 10a the same, and while satisfying the heating rate (the distance from the heating element 20 is the same, and the aerosol is easily released from the airway hole 10a), the overall medium heating rate is regulated by the matrix arrangement, and has good heating consistency.

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 may be evenly distributed or non-evenly distributed.

It should be noted that the airway holes 10a are in a "uniformly distributed" form, including that the airway holes 10a are distributed in a matrix or concentric circles, that is, the arrangement of the airway holes 10a themselves is uniform. It is understandable that the airway holes 10a may not be uniform in the cross section of the aerosol generating substrate 10, that is, the airway holes 10a are uniformly distributed, but the airway holes 10a do not evenly divide the entire aerosol generating substrate 10. For example, when the cross section of the aerosol generating substrate 10 is circular, the airway holes 10a distributed in a matrix are not evenly distributed in the circular cross section.

For example, please refer to Figures 16 to 25, and Figures 30 to 32, all the airway holes 10a are distributed on multiple trajectory lines, wherein each airway hole 10a on a single trajectory line is linearly arranged along a first direction Z1, and multiple trajectory lines are arranged along a second direction Z2, and the first direction Z1 and the second direction Z2 are not parallel. The first direction Z1 and the second direction Z2 constitute a two-dimensional coordinate system, and the first direction Z1 and the second direction Z2 can define the planar arrangement of the airway holes 10a. In other words, the airway holes 10a are arranged regularly, so that it is convenient to process each airway hole 10a according to a predetermined arrangement rule during the molding process.

For example, the airway holes 10a in a single row are arranged at equal distances. Here, the equidistant arrangement means that the distance between the centers of two adjacent airway holes 10a is equal. In this way, the shape and size of the medium wall between two adjacent airway holes 10a are roughly the same, thereby improving the gas solution in the heating and suction process. The gel-generating matrix 10 releases the aerosol uniformly, and is beneficial to the uniformity of aerosol transmission and heating, thereby improving the user's smoking experience.

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.

For example, in some embodiments, referring to FIG. 23 , the airway holes 10a on a single trajectory are arranged along the circumferential direction around the center of the aerosol generating substrate 10, and the multiple trajectory lines are arranged in concentric circles along the radial direction of the aerosol generating substrate 10. That is, the first direction Z1 is the circumferential direction around the center of the smoke generating medium segment, and the second direction Z2 is the radial direction. The airway holes 10a are arranged in concentric circles.

For example, when the first direction and the second direction are perpendicular linear directions, refer to 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. In this way, the medium wall thickness between any two adjacent airway holes 10a is the same, which facilitates uniform heating and uniform release of aerosol.

Exemplarily, in some embodiments, please refer to Figures 24 and 25, the airway holes are distributed in a matrix. 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.

For example, in other embodiments, please refer to FIG. 16 and FIG. 17 , the distribution of the airway holes 10a is: a distribution after omitting the vertex points on the basis of the matrix distribution.

In one embodiment, the airway holes 10a on a single trajectory are repeatedly arranged, and the repeated arrangement means that the airway holes 10a in the same exhaust duct hole 10a are exactly the same. Along the radial outward direction of the aerosol generating substrate 10, the aperture of the airway holes 10a on each trajectory can gradually increase, that is, the aperture of the airway holes 10a on different trajectory lines is different, and the farther away from the center of the aerosol generating substrate 10, the larger the aperture of the airway hole 10a. For example, please refer to Figure 30, taking multiple trajectory lines arranged in a ring as an example, from the airway hole 10a on the first trajectory line close to the center of the aerosol generating substrate 10 to the airway hole 10a on the last trajectory line away from the center of the aerosol generating substrate 10, The aperture of each airway hole 10a may be gradually increased. Of course, in other embodiments, each airway hole 10a may also be arranged in a matrix, and the aperture of the airway holes 10a on each trajectory line may be gradually increased along the radial direction outward of the aerosol generating substrate 10.

In one embodiment, the airway holes 10a on a single trajectory are repeatedly arranged, and the spacing between the airway holes 10a on two adjacent trajectory lines gradually decreases along the radial direction of the aerosol generating substrate 10, that is, the wall thickness of the partition wall between the airway holes 10a on two adjacent trajectory lines can be gradually reduced. In other words, the multiple trajectory lines are not arranged equidistantly, and the farther away from the center of the aerosol generating substrate 10, the smaller the wall thickness of the partition wall between the two adjacent trajectory lines. Exemplarily, taking multiple trajectory lines arranged in a ring as an example, from the airway hole 10a on the first trajectory line close to the center of the aerosol generating substrate 10 to the airway hole 10a on the last trajectory line away from the center of the aerosol generating substrate 10, the wall thickness of the partition wall between the airway holes 10a on two adjacent trajectory lines can be gradually reduced. Of course, in other embodiments, the airway holes 10a can also be arranged in a matrix, and the wall thickness of the partition wall between the airway holes 10a on two adjacent trajectory lines is smaller along the radial direction of the aerosol generating substrate 10.

The aerosol generating substrate 10 with a larger aperture of the airway hole 10a as it is farther away from the center of the aerosol generating substrate 10, and the aerosol generating substrate 10 with a smaller wall thickness of the partition wall between the airway holes 10a on two adjacent trajectory lines as it is farther away from the center of the aerosol generating substrate 10, are closer to the central area of the aerosol generating substrate 10, and the greater the mass per unit volume of the aerosol generating substrate 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 of the aerosol generating substrate 10 to be heated (when a certain amount of heat is supplied to the aerosol generating substrate 10, the greater the mass of the substrate, the longer the time required to be heated to the set temperature), thereby improving the uniformity of aerosol release from the aerosol generating substrate 10, increasing the puffing time and the number of puffs, and at the same time, maintaining the consistency of aerosol release, providing users with a comfortable puffing experience.

In some other embodiments, the airway holes 10a on a single trajectory may be arranged repeatedly, and along the radial direction of the aerosol generating substrate 10, the aperture of the outermost single trajectory away from the center of the aerosol generating substrate 10 is larger than the aperture of the inner single trajectory. The aperture of the airway hole 10a on a trajectory line increases, that is, the aperture of the airway hole 10a on a trajectory line 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 line 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 position 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 users with a comfortable puffing experience.

In other embodiments, please refer to Figures 16 and 17, Figure 24 and Figure 25, a single trajectory line is arranged linearly along the first direction Z1, and multiple trajectory lines are arranged in parallel along the second direction Z2, and the first direction Z1 and the second direction Z2 are 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 in parallel along the second direction Z2, forming multiple rows of non-matrix arranged airway holes 10a. As shown in Figure 25, multiple trajectory lines are arranged in a matrix.

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

For example, in the embodiment of the present application, the aerosol generating substrate 10 is described as a cylindrical shape, that is, the cross-section of the aerosol generating substrate 10 is roughly circular. The cylindrical aerosol generating substrate 10 has a regular shape, which can reduce the difficulty of the manufacturing process.

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

In some other embodiments, the airway hole 10a extends along a curve, for example, in a spiral shape. For example, referring to Figures 32 to 34, the channel 10c includes a plurality of spiral airways, and the spiral airways are arranged inside the aerosol generating matrix 10. At least part of the area along the extension direction of the spiral airway is a curve with a curvature not equal to 0, which means that at least part of the area along the extension direction of the spiral airway is not a straight line with a curvature of 0. For example, along the extension direction of the spiral airway, the spiral airway can be a structure with both a curve segment with a curvature not equal to 0 and a straight line segment with a curvature of 0, or it can be a structure with only a straight line segment with a curvature not equal to 0. The spiral airway has a curved segment with a curvature of 0, but no straight line segment with a curvature of 0. That is to say, from the starting point to the end point of the spiral airway along the extension direction, the spiral airway only needs to extend in a straight line.

The spiral airway is provided to increase the surface area of the aerosol generating matrix 10 (the side wall of the spiral airway 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 surface of the aerosol generating matrix 10. Compared with the smoking segment material in the related art that does not provide any airway but directly conducts 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 speed of the airflow in the aerosol generating matrix 10, thereby increasing the impact force of the airflow, so that the aerosol can be evenly mixed, and then the extraction efficiency and uniformity of the aerosol in the aerosol generating matrix 10 can be improved, and the user's suction experience can be improved. In other words, compared with the smoking segment material in the related art, the aerosol generating matrix 10 of the embodiment of the present application can improve the user's experience.

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

In other embodiments, please refer to Figures 26 to 29, the channel 10c includes a plurality of airway holes 10a, the airway holes 10a are arranged inside the aerosol generating matrix 10, and all the airway holes 10a are arranged in a single row, that is, the airway holes 10a are arranged linearly along the first direction Z1, wherein the first direction Z1 can be a straight line or a curve, that is, the airway holes 10a are arranged regularly, so that it is convenient to process each airway hole 10a according to a predetermined arrangement rule during the molding process. Exemplarily, the center line of the heating element plug hole 10d along the extension direction coincides with the central axis of the aerosol generating matrix 10 along the length direction, and each airway hole 10a is arranged in a circumferential direction around the center of the heating element plug hole 10d.

For example, please refer to Figures 26 to 29. In this embodiment, the airway hole 10a is in a fan ring shape. The multiple airway holes 10a are evenly arranged around the circumference of the heating element 20. For example, when the number of airway holes 10a is three, the central angle corresponding to each airway hole 10a is 120°; when the number of airway holes 10a is four, the central angle corresponding to each airway hole 10a is 90°; when the number of airway holes 10a is six, the central angle corresponding to each airway hole 10a is 90°. When each airway hole 10a corresponds to a central angle of 60°.

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

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 reducing the temperature of the aerosol after extraction; when the user inhales intermittently, less aerosol is wasted, thereby increasing the utilization rate of aerosol.

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

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

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

It should be noted that there is no limitation on the arrangement of the inductor coil. 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.

In the above embodiments, the structure of the heating element 20 is not limited. For example, in some embodiments, the heating element 20 is made of metal or conductive ceramics, that is, the heating element 20 is the electromagnetic induction part. In other embodiments, the heating element 20 includes an insulating substrate and the electromagnetic induction part, and the electromagnetic induction part is layered and arranged on the surface of the insulating substrate.

In other embodiments, the heating element 20 includes an electric heating portion and a contact portion electrically connected to the electric heating portion, and the contact portion is used to contact an external power terminal so that the electric heating portion is energized and generates heat. In this embodiment, the electric energy output portion includes two positive power terminals and a negative power terminal, and the contact portion includes a positive contact and a negative contact. The positive contact contacts the positive power terminal, and the negative contact contacts the negative power terminal. In this way, the electric heating portion can be connected to the circuit. When the aerosol generating device 200 is started, the heating element 20 receives energy and starts to heat the aerosol generating product 100 contained in the aerosol generating device 200. In this embodiment, the electric energy output portion and the heating element 20 are connected in a contact manner. Transmit electrical energy.

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

In the above embodiments, the structure of the heating element 20 is not limited. For example, in some embodiments, the heating element 20 is made of metal or conductive ceramics. In other embodiments, the heating element 20 further includes an insulating base, and the above electric heating part is disposed on the insulating base.

In a specific embodiment, as shown in Figures 3 and 4, on 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 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 (convenient for plugging and matching 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 substrate 10 to heat and bake the aerosol generating substrate 10 from the inside to the outside. The heating method can be resistance heating, for example, a resistance film can be coated/printed on the outside of the heating element 20, and the aerosol generating substrate 10 is heated and baked by resistance heating in the power-on state. In other embodiments, the heating element 20 can also heat and bake the aerosol generating substrate 10 by infrared radiation in the power-on state, and at this time, the outer surface of the heating element 20 can be coated with an infrared material.

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

In another specific embodiment, as shown in FIG. 2 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.

Eight specific embodiments are briefly introduced below with reference to the accompanying drawings.

First embodiment

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

10 , in the cross section perpendicular to the length direction of the aerosol generating substrate 10 , the cross section of the heating element plug hole 10 d is in the shape of a long strip and is arranged on the central axis of the aerosol generating substrate 10 . Correspondingly, the heating element 20 is in the shape of a flat sheet.

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, and 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.

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

In this embodiment, the heating element plug hole 10d is processed 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 is not squeezed to a small extent or not at all. The structure around the heating element plug hole 10d allows the aerosol generating matrix 10 to maintain a relatively uniform matrix density, and it is not easy for the outer wrapping layer 40 wrapped around the outer circumference of the aerosol generating matrix 10 to deform or break. 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 not easy to adhere to the heating element or fall into the heating chamber 200a, and it is not easy to contaminate the heating chamber 200a, which can reduce the user's cleaning workload and thus improve the user's experience.

Second embodiment

Please refer to FIG. 12 to FIG. 15 . In this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the first embodiment. The main differences include: in this embodiment, the heating element plug hole 10 d is a cylindrical hole.

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

Third embodiment

Please refer to FIG. 16 , FIG. 22 and FIG. 30 . In this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the first embodiment. The main differences include: in this embodiment, the channel 10c includes a plurality of airway holes 10a.

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

The airway hole 10a extends along a straight line.

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.

In this embodiment, the circumferential outer surface of the aerosol substrate is not provided with the airway groove 10b. It is understandable that in other embodiments, the circumferential outer surface of the aerosol substrate may also be provided with one or more airway grooves 10b.

Fourth embodiment

Please refer to FIG. 17 and FIG. 18 . In this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the third embodiment. The main differences include: in this embodiment, an airway groove 10 b is provided on the circumferential outer surface of the aerosol substrate.

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

The airway hole 10a extends along a straight line.

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, and the airway holes 10a shown in Figure 18 are arranged in concentric circles.

Fifth embodiment

Please refer to FIG. 24 and FIG. 25 . In this embodiment, the structure of the aerosol generating substrate 10 is substantially the same as that of the third embodiment. The main differences include: in the arrangement of the airway holes 10a, the first direction Z1 and the second direction Z2 are perpendicular.

The airway hole 10a extends along a straight line.

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.

In this embodiment, the circumferential outer surface of the aerosol substrate is not provided with the airway groove 10b. It is understandable that in other embodiments, the circumferential outer surface of the aerosol substrate may also be provided with one or more airway grooves 10b.

Sixth embodiment

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.

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 the number of the airway holes 10a is three, the central angle of each airway hole 10a is 120°; when the number of the airway holes 10a is four, the central angle of each airway hole 10a is 90°; when the number of airway holes 10a is six, the central angle corresponding to each airway hole 10a is 60°.

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

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 reducing the temperature of the aerosol after extraction; when the user inhales intermittently, less aerosol is wasted, thereby increasing the utilization rate of aerosol.

Seventh embodiment

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

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 may also be different.

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

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 along the radial inward direction.

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.

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.

Eighth embodiment

Please refer to Figures 32 to 34, the airway hole 10a extends in a spiral shape, i.e., a spiral airway. It helps to increase the aerosol extraction efficiency (under the premise of the same suction 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 hole wall of the airway hole 10a, the aerosol extraction efficiency is increased).

In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims (23)

An aerosol generating substrate 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 penetrates at least one end of the aerosol generating substrate along the length direction. According to the aerosol generating substrate according to claim 1, the aerosol generating substrate has a channel, and the channel extends along the length direction of the aerosol generating substrate and penetrates at least one end of the aerosol generating substrate along the length direction. According to the aerosol generating substrate of claim 2, the number of the heating element plug hole is one, and it 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. According to the aerosol generating substrate of claim 3, the channel comprises a plurality of airway holes, and the plurality of airway holes are arranged inside the aerosol generating substrate. On 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 an elongated strip, and the airway holes are symmetrically distributed about the heating element plug hole. According to the aerosol generating substrate of claim 3, the channel comprises a plurality of airway holes, the plurality of airway holes are arranged inside the aerosol generating substrate, the heating element plug hole is a cylindrical hole, and in a plane perpendicular to the length direction of the aerosol generating substrate, the airway holes are symmetrically distributed about the heating element plug hole in an origin. According to the aerosol generating substrate of claim 3, the channel comprises a plurality of airway holes, the plurality of airway holes are arranged inside the aerosol generating substrate, the center line of the heating element plug hole along the extension direction coincides with the central axis of the aerosol generating substrate along the length direction, and the airway holes are arranged in a circumferential direction around the center of the heating element plug hole. The aerosol generating substrate according to claim 3, wherein the channel comprises a plurality of airway holes, wherein the plurality of airway holes are arranged inside the aerosol generating substrate, and all of the airway holes are distributed on a plurality of trajectory lines, wherein each of the airway holes on a single trajectory line is linearly arranged along a first direction. Arrangement: a plurality of track lines are arranged along a second direction, and the first direction and the second direction are not parallel. According to the aerosol generating substrate of claim 7, the airway holes on a single trajectory line are arranged in a straight line along the first direction, and the multiple trajectory lines are arranged in parallel along the second direction, and the first direction is perpendicular to the second direction. According to the aerosol generating substrate of claim 8, the distance between two adjacent airway holes on a single trajectory line is equal to the distance between two adjacent trajectory lines. According to the aerosol generating substrate of claim 7, the airway holes on a single trajectory line are arranged in a circumferential direction around the center of the aerosol generating substrate, and the multiple trajectory lines are arranged in concentric circles along the radial direction of the aerosol generating substrate. According to the aerosol generating substrate of claim 7, the airway holes on a single trajectory are repeatedly arranged, radially outwardly along the aerosol generating substrate, The apertures of the airway holes on each trajectory line gradually increase; and/or, The distance between the airway holes on two adjacent trajectory lines gradually decreases. The aerosol generating substrate according to any one of claims 1 to 11, wherein the aerosol generating substrate is an integral structure. According to the aerosol generating substrate according to any one of claims 1 to 11, 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. According to the aerosol generating substrate according to any one of claims 2 to 11, the channel comprises a plurality of spiral air channels, the spiral air channels are arranged inside the aerosol generating substrate, and at least a portion of the spiral air channels along the extension direction is in the shape of a curve with a curvature not equal to 0. According to the aerosol generating substrate according to any one of claims 2 to 11, the channel comprises an airway groove, and the airway groove is arranged on the circumferential surface of the aerosol generating substrate. The aerosol-generating substrate according to any one of claims 2 to 11, wherein the aerosol The generated matrix is a particle combination, wherein micropores are formed between particles of the particle combination, and a plurality of the micropores are connected to form micro airways connected to the channel and/or the heating element plug hole, and the cross-sectional area of the micropores is 0.7nm ² -710μm ² ; or the hydraulic diameter of the micropores is 10nm-30μm. According to the aerosol generating substrate according to any one of claims 1 to 3, in the 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 serrated or a polygon. According to any one of claims 1 to 3, the cross-sectional shape of the heating element plug hole in the cross section perpendicular to the length direction of the aerosol generating substrate is a long strip; the length of the cross section is 1 mm-40 mm; and/or, The width of the cross section is 0.05 mm-3 mm. According to the aerosol generating substrate according to any one of claims 1 to 3, 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. According to the aerosol generating substrate according to any one of claims 1 to 3, the heating element plug hole is a cylindrical hole, and the cross-sectional area of the heating element plug hole is 0.01 mm ² -7.1 mm ² . An aerosol generating article comprising: The aerosol generating substrate according to any one of claims 1 to 20; A functional section, arranged at one end of the aerosol generating substrate along the length direction, comprising at least a filtering section for filtering aerosol; The outer wrapping layer wraps around the functional segment and the aerosol generating substrate. According to the aerosol generating article according to claim 21, the functional section also includes a cooling section, and the cooling section is located between the filtering section and the aerosol generating substrate. An aerosol generating device for use with the aerosol generating product according to claim 21 or 22, the aerosol generating device comprising a heating component, the heating component comprising a heating element, the heating element being inserted into the heating element plug hole and heating the aerosol generating device. into a matrix to generate an aerosol.