AEROSOL GENERATING SUBSTRATE, AEROSOL GENERATING PRODUCT, AND AEROSOL GENERATING DEVICE

Description

CROSS-REFERENCE TO PRIOR APPLICATION

This application is a continuation of International Patent Application No. PCT/CN2023/135439, filed on Nov. 30, 2023, which claims priority to Chinese Patent Application No. 202310186462.6, filed on Feb. 20, 2023. The entire disclosure of both applications is hereby incorporated by reference herein.

FIELD

This application relates to the technical field of aerosol generation products, and in particular, to an aerosol generating substrate, an aerosol generating product, and an aerosol generating device.

BACKGROUND

Aerosol generation products include aerosol generation products for forming an aerosol by burning and aerosol generation products for forming an aerosol by heat-not-burn. A typical aerosol generation product for forming an aerosol by heat-not-burn includes an aerosol generating substrate, such as a tobacco material, a scented material, or/and an atomizing agent, that can be atomized to form an aerosol. The aerosol generation product is heated by using an external heat source, for the aerosol generating substrate to be just heated enough for emitting an aerosol, and the aerosol generating substrate does not combust. By loading an atomizing agent, the atomizing agent is released by high-temperature heat during use, to form an aerosol.

In related technologies, a heating element is disposed in a heating bin of an aerosol generating device. When suction is required, an aerosol generation product is inserted into the heating bin of the aerosol generating device, the heating element heats the aerosol generation product. When an aerosol generating substrate is separated from the heating element after used, the aerosol generating substrate and the heating element move relative to each other. Consequently, solid particles such as a residual adhered to the heating element are prone to falling into the aerosol generating device, and a user needs to periodically clean the heating bin. This not only increases the workload of the user, but also may cause damage to the heating element if the cleaning is improper.

SUMMARY

In an embodiment, the present invention provides an aerosol generating substrate, wherein the aerosol generating substrate has a columnar shape, an interior of the aerosol generating substrate is provided with at least one insertion hole for a heating element, and the at least one insertion hole extends along a length direction of the aerosol generating substrate and passes through at least one end of the aerosol generating substrate along the length direction.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:

FIG. 1 is a schematic structural diagram of an aerosol generating device according an embodiment of this application;

FIG. 2 is a cross-sectional view of a first aerosol generating device according an embodiment of this application;

FIG. 3 is a cross-sectional view of a second aerosol generating device according an embodiment of this application;

FIG. 4 is a cross-sectional view of a third aerosol generating device according an embodiment of this application;

FIG. 5 is a schematic structural diagram of an aerosol generating product according an embodiment of this application;

FIG. 6 is a cross-sectional view of a first aerosol generating product according an embodiment of this application;

FIG. 7 is a cross-sectional view of a second aerosol generating product according to an embodiment of this application;

FIG. 8 is a cross-sectional view of a third aerosol generating product according to an embodiment of this application;

FIG. 9 is a schematic structural diagram of a first aerosol generating substrate according an embodiment of this application;

FIG. 10 is a schematic structural diagram of a second aerosol generating substrate according an embodiment of this application;

FIG. 11 is a schematic structural diagram of a third aerosol generating substrate according an embodiment of this application;

FIG. 12 is a schematic structural diagram of a fourth aerosol generating substrate according an embodiment of this application;

FIG. 13 is a schematic structural diagram of a fifth aerosol generating substrate according an embodiment of this application;

FIG. 14 is a schematic structural diagram of a sixth aerosol generating substrate according an embodiment of this application;

FIG. 15 is a schematic structural diagram of a seventh aerosol generating substrate according an embodiment of this application;

FIG. 16 is a schematic structural diagram of an eighth aerosol generating substrate according an embodiment of this application;

FIG. 17 is a schematic structural diagram of a ninth aerosol generating substrate according an embodiment of this application;

FIG. 18 is a schematic structural diagram of a tenth aerosol generating substrate according an embodiment of this application;

FIG. 19 is a schematic structural diagram of an eleventh aerosol generating substrate according an embodiment of this application;

FIG. 20 is a cross-sectional view of a twelfth aerosol generating substrate according an embodiment of this application;

FIG. 21 is a cross-sectional view of a thirteenth aerosol generating substrate according an embodiment of this application;

FIG. 22 is a schematic structural diagram of a fourteenth aerosol generating substrate according an embodiment of this application;

FIG. 23 is a schematic structural diagram of a fifteenth aerosol generating substrate according an embodiment of this application;

FIG. 24 is a schematic structural diagram of a sixteenth aerosol generating substrate according an embodiment of this application;

FIG. 25 is a schematic structural diagram of a seventeenth aerosol generating substrate according an embodiment of this application;

FIG. 26 is a schematic structural diagram of an eighteenth aerosol generating substrate according an embodiment of this application;

FIG. 27 is a schematic structural diagram of a nineteenth aerosol generating substrate according an embodiment of this application;

FIG. 28 is a schematic structural diagram of a twentieth aerosol generating substrate according an embodiment of this application;

FIG. 29 is a schematic structural diagram of a twenty-first aerosol generating substrate according an embodiment of this application;

FIG. 30 is a schematic structural diagram of a twenty-second aerosol generating substrate according an embodiment of this application;

FIG. 31 is a schematic structural diagram of a twenty-third aerosol generating substrate according an embodiment of this application;

FIG. 32 is a schematic structural diagram of a twenty-fourth aerosol generating substrate according an embodiment of this application;

FIG. 33 is a cross-sectional view of FIG. 32;

FIG. 34 is a perspective view of FIG. 32;

FIG. 35 is a schematic structural diagram of a twenty-fifth aerosol generating substrate according an embodiment of this application; and

FIG. 36 is a schematic cross-sectional view of the structure of an aerosol generating substrate according an embodiment of this application.

DETAILED DESCRIPTION

In an embodiment, the present invention provides an aerosol generating substrate, an aerosol generating product, and an aerosol generating device. Therefore, the aerosol generating substrate is not prone to being adhered to a heating element or falling into a heating bin, and the cleaning workload of a user can be reduced.

In an embodiment, the present invention provides an aerosol generating substrate. The aerosol generating substrate has a columnar shape, and the interior of the aerosol generating substrate is provided with a heating element insertion hole. The heating element insertion hole extends along the length direction of the aerosol generating substrate and passes through at least one end of the aerosol generating substrate along the length direction.

In an embodiment, the aerosol generating substrate is provided with a channel, and the channel extends along the length direction of the aerosol generating substrate and passes through at least one end of the aerosol generating substrate along the length direction.

In an embodiment, one heating element insertion hole is provided and extends along the length direction of the aerosol generating substrate, and the heating element insertion hole is provided on the central axis of the aerosol generating substrate.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, and on the cross section perpendicular to the length direction, the cross section of the heating element insertion hole is an elongated strip and the air holes are symmetrically distributed about the heating element insertion hole.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, the heating element insertion hole is a columnar hole, and in a plane perpendicular to the length direction of the aerosol generating substrate, the air holes are symmetrically distributed by using the heating element insertion hole as the origin.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, the central line of the heating element insertion hole along the extension direction coincides with the central axis of the aerosol generating substrate along the length direction, and the air holes are arranged along a circumferential direction around the center of the heating element insertion hole.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, and all of the air holes are distributed on a plurality of trajectory lines, where air holes on an individual trajectory line are linearly arranged along a first direction, the plurality of trajectory lines are arranged along a second direction, and the first direction is not parallel to the second direction.

In an embodiment, the air holes on the individual trajectory line are linearly arranged along the first direction, the plurality of trajectory lines are arranged in parallel along the second direction, and the first direction is perpendicular to the second direction.

In an embodiment, the distance between two adjacent air holes on the individual trajectory line is equal to the distance between two adjacent trajectory lines.

In an embodiment, the air holes on the individual trajectory line are arranged along a circumferential direction around the center of the aerosol generating substrate, and the plurality of trajectory lines are arranged in concentric circles along the radial directions of the aerosol generating substrate.

In an embodiment, the air holes on the individual trajectory line are repeatedly arranged, and in the directions extending outward along the radial directions of the aerosol generating substrate, the hydraulic diameter on each trajectory line gradually increases.

In an embodiment, the air holes on the individual trajectory line are repeatedly arranged, and in the directions extending outward along the radial directions of the aerosol generating substrate, the spacing between air holes on two adjacent trajectory lines gradually decreases.

In an embodiment, the aerosol generating substrate includes an integral structure.

In an embodiment, the heating element insertion hole passes through two opposite ends of the aerosol generating substrate along the length direction; and in the plane perpendicular to the length direction, the cross-sectional shape of the aerosol generating substrate is a circle.

In an embodiment, the channel includes a plurality of helical holes, the helical holes are provided inside the aerosol generating substrate, and at least a part of regions of the helical holes along the extension direction has a curved shape having a curvature not being 0.

In an embodiment, the channel includes a hole slot, and the hole slot is provided on a circumferential surface of the aerosol generating substrate.

In an embodiment, the aerosol generating substrate is a particle combination, micro pores are formed among particles of the particle combination, a plurality of the micro pores are communicated with each other to form micro air passages communicated with the channel and/or the heating element insertion hole, and the cross-sectional area of each micro pore ranges from 0.7 nm² to 710 μm²; or, the hydraulic diameter of the micro pores ranges from 10 nm to 30 μm.

In an embodiment, on the cross section perpendicular to the length direction of the aerosol generating substrate, the cross-sectional shape of the heating element insertion hole is an elongated strip, a circle, an ellipse, a ring, a circular arc, a zigzag, or a polygon.

In an embodiment, on the cross section perpendicular to the length direction of the aerosol generating substrate, the cross-sectional shape of the heating element insertion hole is an elongated strip; the length of the cross section ranges from 1 mm to 40 mm; and/or the width of the cross section ranges from 0.05 mm to 3 mm.

In an embodiment, the cross-sectional shape of the heating element insertion hole is a circle, and the aperture of the heating element insertion hole ranges from 0.1 mm to 3 mm.

In an embodiment, the heating element insertion hole is a columnar hole, and the cross-sectional area of the heating element insertion hole ranges from 0.01 mm² to 7.1 mm².

The embodiments of this application further provide an aerosol generating product, including:

• • the aerosol generating substrate according to any one of the foregoing aspects;
  • a functional segment, disposed at one end of the aerosol generating substrate along the length direction, and including at least a filter segment for filtering an aerosol; and
  • an outer wrapping layer, wrapping around the functional segment and a circumferential outer portion of the aerosol generating substrate.

In an embodiment, the functional segment further includes a temperature-reducing segment, and the temperature-reducing segment is located between the filter segment and the aerosol generating substrate.

The embodiments of this application further provide an aerosol generating device, for being used jointly with the aerosol generating product, where the aerosol generating device includes a heating component, the heating component includes a heating element, and the heating element is configured to be inserted into the heating element insertion hole and heat the aerosol generating substrate to form an aerosol.

According to the aerosol generating substrate, the aerosol generating product, and the aerosol generating device provided in the embodiments of this application, the aerosol generating substrate has a columnar shape, for example, may be an integral structure manufactured by using an extrusion process, the interior of the aerosol generating substrate is provided with a heating element insertion hole extending along the length direction of the aerosol generating substrate, and the heating element insertion hole passes through at least one end of the aerosol generating substrate along the length direction. By providing the heating element insertion hole in the interior of the aerosol generating substrate, the shape of the heating element insertion hole fits with that of the heating element of the aerosol generating device, for the heating element on the aerosol generating device to be in insertion-fit with the heating element insertion hole, so as not to extrude the structure around the heating element insertion hole, and for the aerosol generating substrate to be kept in a relatively uniform substrate density. Therefore, the problems of deformation or crack of an outer wrapping layer that wraps around the circumferential outer portion of the aerosol generating substrate are not prone to occurring. In addition, when the aerosol generating substrate is separated from the aerosol generating device after being used up by heating, the aerosol generating substrate is not prone to being adhered to the heating element or falling into a heating bin. Therefore, the heating bin is not prone to being polluted and the cleaning workload of a user can be reduced.

It is to be noted that, embodiments and technical features in the embodiments in this application may be combined without conflicts. Detailed descriptions in specific implementations should be understood as explanatory notes for the purpose of this application and should not be regarded as improper limitations on this application.

The embodiments of this application provide an aerosol generating substrate. Referring to FIG. 5 to FIG. 35, an aerosol generating substrate 10 has a columnar shape, and the interior of the aerosol generating substrate 10 is provided with a heating element insertion hole 10d. The heating element insertion hole 10d 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.

The aerosol generating substrate 10 is configured to form an aerosol when being heated, for vaping by a user. In the embodiments of this application, the aerosol generating substrate 10 has an approximately columnar shape. The columnar shape may be a cylindrical shape (that is, the cross-sectional shape is a circle), a prismatic shape (that is, the cross-sectional shape is a polygon), an elliptic cylindrical shape (that is, the cross-sectional shape is an ellipse), or the like, which is not limited herein.

Exemplarily, the aerosol generating substrate 10 is a particle combination, which is also referred to as a powder combination, and is a type of a recombined smoother substrate, for example, a recombined smoother substrate including components such as a smoking agent and a smoother. The aerosol generating substrate 10 is an integral structure, for example, an integral structure that may be formed by extrusion forming, injection, or an extrusion process. The extrusion forming refers to a processing method in which a material mixture is added to an extruder, and the material is thermally plasticized by means of an action between a barrel and a rod of the extruder, to be then pushed forward by the rod, and continuously passes through a mold at a discharging port of the extruder, to form products or semi-products having various cross sections. The structure of the substrate formed by extrusion forming presents a strip shape. In this way, whenever being heated for vaping or after the heating stops, the aerosol generating substrate 10 is an integral substrate, which is not prone to disintegrating or falling. Therefore, the problems such as loosening of flakes, falling off of filiform-like components and particle components, being difficult to be cleaned of a flake-like, filiform-like, or scattered particle aerosol generating substrate 10 in the existing technology, and the problem of the uneven composition of the aerosol generating substrate 10 in the existing technology are solved.

The interior of the aerosol generating substrate 10 is provided with a heating element insertion hole 10d. The heating element insertion hole 10d extends along the length direction of the aerosol generating substrate 10. In other words, the heating element insertion hole 10d extends along the longitudinal direction of the aerosol generating substrate 10. The heating element insertion hole 10d is configured to be in insertion-fit with a heating element 20 of an aerosol generating device 200.

That the heating element insertion hole 10d passes through at least one end of the aerosol generating substrate 10 along the length direction means that the heating element insertion hole 10d may run through two opposite ends of the aerosol generating substrate 10 along the length direction (referring to FIG. 20), or one end of the heating element insertion hole 10d passes through an end surface of the aerosol generating substrate 10 along the length direction, and the other end of the heating element insertion hole 10d is a blind end (referring to FIG. 21). It may be understood that, compared with that the heating element insertion hole 10d passes through one end of the aerosol generating substrate 10 along the length direction, the heating element insertion hole 10 running through two ends of the aerosol generating substrate 10 along the length direction is more beneficial to releasing of the aerosol.

The embodiments of this application further provide an aerosol generating product, referring to FIG. 5 to FIG. 8, including a functional segment 30, an outer wrapping layer 40, and the aerosol generating substrate 10 according to any embodiment of this application.

It is to be noted that, the aerosol generating product 100 forms an aerosol by relying on the aerosol generating substrate 10, and the functional segment 30 is not configured to generate an aerosol. The functional segment 30 is disposed at one end of the aerosol generating substrate 10 along the length direction. Referring to FIG. 6 to FIG. 8, the functional segment 30 includes at least a filter segment 31 configured to filter the aerosol. The filter segment 31 may alternatively be referred to as a filtering mouthpiece. A user vapes the aerosol undergone filtering by the filter segment 31 of the functional segment 30.

It is to be noted that, the aerosol generating product in the embodiments of this application is applicable to vaping by means of burning, or may be applicable to vaping by means of heat-not-burn. In the embodiments of this application, descriptions are provided by using an example in which the aerosol generating product 100 is applicable to vaping by means of heat-not-burn.

The embodiments of this application further provide an aerosol generating device, configured to be used jointly with the aerosol generating product provided in the embodiments of this application. Referring to FIG. 1 to FIG. 4, the aerosol generating device 200 includes a heating component, the heating component includes a heating element 20, and the heating element 20 is configured to be inserted into a heating element insertion hole 10d of an 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 component disposed in the housing 201. The housing 201 is provided with an accommodating bin. An electrical energy output portion of the power supply component is disposed in the accommodating bin or around a side wall of the accommodating bin. When a portion of the aerosol generating product 100 corresponding to a length range of the aerosol generating substrate 10 is inserted into the accommodating bin, the electrical energy output portion transmits electrical energy to the heating element 20 in a contact or non-contact manner. The heating element 20 receives energy from the outside to generate heat, to further heat and atomize the aerosol generating substrate 10, to generate an aerosol.

In the embodiments of this application, the length direction does not particularly refer to the direction in which the contour of the appearance 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 the same as the length direction thereof. The direction in which the aerosol generating product 100 is inserted into a heating bin 200a and the direction in which the aerosol generating product 100 is removed from the heating bin 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 contour of the appearance of the aerosol generating substrate 10 is of a cylindrical shape, 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 the diameter of the aerosol generating substrate 10, the length direction of the aerosol generating substrate 10 is still the axial direction. Still for example, when the contour of the appearance of the aerosol generating substrate 10 is of a rectangular block shape, the length direction is still the direction defined above, that is, the arrangement direction of the functional segment 30 and the aerosol generating substrate 10, or the direction in which the aerosol generating product 100 is put in or removed from the heating bin 200a. The length direction of the aerosol generating substrate 10 may be any direction of the length, the width, and the height of the rectangular block.

For example, when the aerosol generating substrate 10 is used alone, that is, not combined with the functional segment 30, the length direction is a direction perpendicular to the distance between two ends of the aerosol generating substrate 10. For example, when the aerosol generating substrate 10 is a cylinder, the length direction is the direction perpendicular to the distance between two end surfaces. For example, when the aerosol generating substrate 10 is a column whose cross section is a triangle, a polygon, an oblong circle, or an ellipse, the length direction is the axial direction. When the aerosol generating substrate 10 is a rectangular block, the length direction of the aerosol generating substrate 10 may be any direction of the length, the width, and the height of the rectangular block.

According to the aerosol generating substrate 10 of the embodiments of this application, the heating element insertion hole 10d is processed during preparing of the aerosol generating substrate 10, and during use, the heating element 20 is inserted into the heating element insertion hole 10d. In this way, when the heating element 20 is inserted into the heating element insertion hole 10d, the heating element 20 slightly extrudes or does not extrude the structure around the heating element insertion hole 10d at all, for the aerosol generating substrate 10 to be kept in a relatively uniform substrate density. Therefore, the problems of deformation or crack of an outer wrapping layer 40 that wraps around the circumferential outer portion of the aerosol generating substrate 10 are not prone to occurring. In addition, when the aerosol generating substrate 10 is separated from the aerosol generating device 200 after being used up by heating, the aerosol generating substrate 10 is not prone to being adhered to the heating element or falling into a heating bin 200a. Therefore, the heating bin 200a is not prone to being polluted and the cleaning workload of a user can be reduced.

Exemplarily, the aerosol generating substrate 10 is an integral structure. Specifically, the aerosol generating substrate 10 may be directly processed into a required shape by using a mold, instead of being connected by a plurality of independent sub-blocks by means such as sticking. In this way, the structural strength of the aerosol generating substrate 10 is relatively good and is not prone to being scattered.

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

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

The material of the outer wrapping layer 40 is not limited, and for example, includes, but is not limited to, one or a combination of materials such as fiber paper, a metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE, and PBAT.

In some embodiments, referring to FIG. 6 and FIG. 8, the functional segment 30 includes only a filter segment 31. In some other embodiments, referring to FIG. 7, in addition to the filter segment 31, the functional segment 30 further includes a support segment and/or a temperature-reducing segment 32. The support segment and/or the temperature-reducing segment 32 are/is arranged between the aerosol generating substrate 10 and the filter segment 31.

The temperature-reducing segment 32 is configured to cool down the aerosol before it is filtered by the filter segment 31, to reduce the temperature of the aerosol and alleviate the situation of “scalding” when a user vapes the aerosol.

The material of the temperature-reducing segment 32 includes, but is not limited to, one or a combination of materials of a polyethelme (PE), a polylactic acid (PLA, also referred to as a polylactide), a butyleneadipate-co-terephthalate (PBAT), a polyprop-pylenee (PP), an aceatate, and an acrylic acid fiber.

The material of the filter segment includes, but is not limited to, one or a combination of materials of a polyethelme (PE), a polylactic acid (PLA, also referred to as a polylactide), a butyleneadipate-co-terephthalate (PBAT), a polyprop-pylenee (PP), an aceatate, and an acrylic acid fiber.

The material of the temperature-reducing segment 32 and the material of the filter segment may be the same or may be different.

The support segment has a particular structural strength, and functions to limit the axial direction of the aerosol generating substrate 10.

Specifically, when the aerosol generating product 100 is inserted into the heating bin 200a of the aerosol generating device 200, or when the heating element is inserted into the aerosol generating substrate 10, the support segment provides a reaction force to the aerosol generating substrate 10, to prevent the aerosol generating substrate 10 from moving in the axial direction.

The specific composition of the aerosol generating substrate 10 is not limited herein. Exemplarily, in an embodiment, the aerosol generating substrate 10 may include a plant component, an additive component, a smoking agent component, a binder component, and the like.

In an embodiment, the plant component is one or a combination of powder formed by shattering a tobacco leaf material, tobacco leaf fragments, tobacco stems, tobacco powder, fragrant plant, and the like. The plant component is used for generating, when heated, an aerosol having, for example, nicotine.

In an embodiment, the additive component may be one or a combination of an inorganic filler, a lubricant, and an emulsifier. The inorganic filler includes one or a combination of heavy calcium carbonate, light calcium carbonate, zeolites, attapulgite, talk, and diatomaceous earth. The inorganic filler may provide a framework for supporting the plant component. In addition, the inorganic filler further has micro pores 10e, to improve the factor of porosity of the wall material after the plant component is formed, thereby improving the release rate of the aerosol.

The lubricant includes one or a combination of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearidonic acid, and palmitic acid. The lubricant can increase the flowability of the particles, reduce the friction among the particles, make the overall density of particle distribution relatively uniform, reduce the pressure required for forming by the mold, and reduce the wear of the mold.

The emulsifier includes one or a combination of a polyglycerol ester, Tween-80, and a polyvinyl alcohol.

The emulsifier (also referred to as a surfactant) can reduce the interfacial tension of water-soluble and water-insoluble components in the mixed system, and form a stronger film on the surface of the droplets or an electrical double layer on the surface of the droplets due to the charge given by the emulsifier, preventing the droplets from aggregating with each other, while maintaining a uniform emulsion. The emulsion and homogenization of the two non-fusion components can improve the consistency of the product quality.

In an embodiment, the smoking agent component functions to generate a large quantity of steam during heating, to increase the quantity of an aerosol in the aerosol generation product. For example, the smoking agent may include: a monohydric alcohol (such as menthol); a polyol (such as propanediol, triethylene glycol, 1,3-butanediol, and glycerol); an ester of polyol (such as glycerol monoacetate, diacetylglycerol, or triacetin); a monocarboxylic acid; one or a combination of polycarboxylic acids (such as lauric acid and myristic acid) or aliphatic esters of polycarboxylic acids (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanilate, glyceryl tributyrate, and lauryl acetate).

In an embodiment, the binder component is a natural plant extract, non-ionized modified viscous polysaccharide including one or a combination of tamarind polysaccharide, pullulan polysaccharide, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The binder is used for bonding the particles together, so as not to be loosened. In addition, the binder improves the water resistance of the aerosol generating substrate 10, is not harmful to the human body, and has a health care effect.

Exemplarily, referring to FIG. 9 to FIG. 34, the aerosol generating substrate 10 has a cylindrical shape, that is, in a plane perpendicular to the length direction of the aerosol generating substrate 10, the profile of the cross section of the aerosol generating substrate 10 is a regular circle or an approximate circle. The profile of the aerosol generating substrate 10 of the cylindrical shape is regular, and can reduce the difficulty of the manufacturing process.

In an embodiment, the aerosol generating substrate 10 is provided with a channel 10c, the channel 10c 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.

That the channel 10c passes through at least one end of the aerosol generating substrate 10 along the length direction means that the channel 10c passes through two opposite ends of the aerosol generating substrate 10 along the length direction (referring to FIG. 20). An air flow may flow from one end of the aerosol generating substrate 10 along the length direction to the other end of the aerosol generating substrate 10 through the channel 10c along the length direction.

Certainly, referring to FIG. 21, alternatively, one end of the channel 10c passes through an end surface of the aerosol generating substrate 10 along the length direction, and the other end of the channel 10c is a blind end. As shown in FIG. 21, channels 10c run through the same end of the aerosol generating substrate 10 along the length direction. In another embodiment, alternatively, some of the channels 10c run through one end of the aerosol generating substrate 10 along the length direction, and the other channels 10c run through the other end of the aerosol generating substrate 10 along the length direction.

It may be understood that, compared with that the air hole 10a passes through one end of the aerosol generating substrate 10 along the length direction, the air hole 10a running through two ends of the aerosol generating substrate 10 along the length direction is more beneficial to reducing the resistance to vaping by a user.

The channels 10c may increase the surface area of the aerosol generating substrate 10, thereby facilitating the heat transfer and improving the heat efficiency. The aerosol in the channels 10c is delivered to a vaping end under a negative pressure of vaping, and the channels 10c can reduce the resistance of vaping by a user, thereby improving the user experience. It is to be noted that, the vaping resistance is positively correlated to the flow resistance of the aerosol generating substrate 10. A smaller flow resistance of the aerosol in the aerosol generating substrate 10 indicates a smaller vaping resistance experienced by a user, and a larger flow resistance of the aerosol in the aerosol generating substrate 10 indicates a larger vaping resistance experienced by a user.

It is to be noted that, referring to FIG. 36, the aerosol generating substrate 10 is a particle combination, micro pores 10e are formed among particles of the particle combination. That is, gaps among the particles form the micro pores 10e, and the micro pores 10e are communicated with each other to form micro air passages communicated with the channel 10c and/or the heating element insertion hole 10d.

The channel 10c and the micro air passages may increase the surface area of the aerosol generating substrate 10, thereby facilitating the heat transfer and improving the heat efficiency. After the substrate of the aerosol generating substrate 10 is heated to release an aerosol, the aerosol is gathered to the channel 10c through the gaps or the micro air passages in the wall material. An aerosol released by an atomized substrate exposed to the air hole 10a (that is, an atomized substrate located on the inner wall surface of the air hole) may be directly released to the air hole 10a. Aerosols in adjacent air holes 10a may also circulate to each other through the micro air passages, and are delivered to the vaping end under a negative vaping pressure.

It is to be noted that, the channels 10c are holes in a macro-scale sense, and the micro pores 10e are holes in a microscale sense. The cross-sectional area of the channels 10c is much greater than the cross-sectional area of the micro pores 10e. The size of the micro pore 10e is determined by the gaps among the particles.

Exemplarily, the cross-sectional area of the micro pores 10e is 0.7 nm² (square nanometers) to 710 μm² (square microns), for example, 1 nm², 10 nm², 25 nm², 30 nm², 40 nm², 50 nm², 60 nm², 70 nm², 80 nm², 100 nm², 200 nm², 300 nm², 400 nm², 500 nm², 600 nm², 700 nm², 800 nm², 900 nm², 100 μm², 200 μm², 300 μm², 400 μm², 500 μm², 600 μm², and 700 μm².

When the cross-sectional area of the micro pores 10e is less than 0.7 nm², effective components inside the substrate is not easily volatilized to enter the air hole 10a, resulting in that the utilization rate of the substrate decreases; however, when the range of the cross-sectional area of the micro pores 10e of the substrate is greater than 710 μm², the heat conduction in the micro pores 10e is uneven, resulting in the reduction in the vaping experience. Therefore, in this embodiment, by controlling the cross-sectional area of the micro pores 10e to range from 0.7 nm² to 710 μm², not only the utilization rate of substrate is taken into account, but also the vaping experience is improved.

More preferably, the cross-sectional area of the micro pores 10e ranges from 1963 nm² to 20 μm².

Exemplarily, the hydraulic diameter of the micro pores 10e ranges from 10 nanometers (nm) to 30 micron (μm), 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, and the like.

When the hydraulic diameter of the micro pores 10e is less than 10 nm, effective components in the interior of the aerosol generating substrate 10 is not easily volatilized to enter the air hole 10a, resulting in that the utilization rate of the substrate decreases. However, when the hydraulic diameter of the micro pores 10e of the aerosol generating substrate 10 is greater than 30 μm, uneven heat conduction in the micro pores 10e may be caused, resulting in the reduction in the vaping experience. Therefore, in this embodiment, by controlling the hydraulic diameter of the micro pores 10e to range from 10 nm to 30 μm, not only the utilization rate of the substrate is taken into account, but also the vaping experience is improved.

Exemplarily, the hydraulic diameter of the micro pores 10e ranges from 50 nm to 5 μm.

One or more heating element insertion holes 10d may be provided. In the embodiments of this application, for example, one heating element insertion hole 10d is provided for description.

Exemplarily, one heating element insertion hole 10d is provided, and the heating element insertion hole 10d extends along the length direction of the aerosol generating substrate 10. In other words, the size of the heating element insertion hole 10d in the length direction of the aerosol generating substrate 10 is far greater than the size thereof in the direction perpendicular to the length direction 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.

Exemplarily, referring to FIG. 10 to FIG. 35, the heating element insertion hole 10d is disposed on the central axis of the aerosol generating substrate 10. The central axis is a virtual base line used as a reference, 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 insertion hole 10d, for the entire heating of the aerosol generating substrate 10 to be radially distributed, the entire heating of the aerosol generating substrate 10 to be relatively uniform in the circumferential direction around the heating element 20, and the aerosol generating substrate 10 to stably and uniformly release an aerosol. In some other embodiments, the heating element insertion hole 10d may alternatively be disposed eccentrically relative to the central axis. That is, the heating element insertion hole 10d may alternatively not be provided on the central axis.

The specific shape of the heating element insertion hole 10d is not limited. For example, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross-sectional shape of the heating element insertion hole 10d may be an elongated strip shown in FIG. 10, FIG. 11, and FIG. 16 to FIG. 18, a circle shown in FIG. 12 and FIG. 23 to FIG. 29, an ellipse shown in FIG. 13, a ring, a circular arc, and a zigzag shown in FIG. 9, or a polygon shown in FIG. 14 and FIG. 15, or the like.

Exemplarily, referring to FIG. 10, FIG. 11, and FIG. 16 to FIG. 18, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross section of the heating element insertion hole 10d is an elongated strip, and the heating element insertion hole 10d extends along the length direction of the aerosol generating substrate 10.

On the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross-sectional shape of the elongated strip-shaped heating element insertion hole 10d is not limited, and may be, for example, a V-shape, a straight line shape, or an arc shape. In this case, the heating element 20 fitted with the heating element insertion hole 10d has a sheet shape, and extends along the length direction of the aerosol generating substrate 10.

Specifically, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross-sectional shape of the heating element insertion hole 10d is an elongated strip, the length of the cross section ranges from 1 mm to 40 mm, and the width of the cross section ranges from 0.05 mm to 3 mm. The length and the width of the heating element insertion hole 10d are controlled, for the contact area between the heating element 20 and the aerosol generating substrate 10 to be controlled, thereby further facilitating the control of the heating efficiency.

Exemplarily, the length of the cross section of the heating element insertion hole 10d ranges from 10 mm to 20 mm. Exemplarily, the width of the cross section of the heating element insertion hole 10d ranges from 0.3 mm to 0.8 mm.

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

On 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, and may be, for example, a circle, an ellipse, or a polygon. In this case, the heating element 20 fitted with the heating element insertion hole 10d has a columnar shape, and extends along the length direction of the aerosol generating substrate 10, and the cross-sectional shape of the columnar heating element 20 is not limited, and may be, for example, a circle, an ellipse, or a polygon.

In some embodiments, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross-sectional shape of the heating element insertion hole 10d is a circle, and the aperture of the heating element insertion hole ranges from 0.1 mm to 3 mm, for example, 0.1 mm, 0.2 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.6 mm, 1.8 mm, 2 mm, 2.1 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, and 3 mm.

In some embodiments, the heating element insertion hole 10d is a columnar hole. On the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross sectional area of the heating element insertion hole 10d ranges from 0.01 mm² to 7.1 mm², for example, 0.01 mm², 0.08 mm², 0.4 mm², 0.5 mm², 0.8 mm², 1 mm², 1.6 mm², 1.8 mm², 2 mm², 3 mm², 3.2 mm², 4 mm², 5 mm², 6 mm², 6.5 mm², 6.8 mm², 7 mm², and 7.1 mm².

Exemplarily, the heating element insertion hole 10d is a columnar hole. On the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross sectional area of the heating element insertion hole 10d ranges from 0.5 mm² to 3.2 mm².

It is to be noted that, the quantity of the channels 10c is not limited, and one or a plurality of channels 10c may be provided. Exemplarily, referring to FIG. 16 to FIG. 34, the channel 10c includes an air hole 10a, and the air hole 10a is provided in the interior of the aerosol generating substrate 10. In other words, at least a part of the channel 10c is used as the air hole 10a. On the cross section perpendicular to the length direction of the aerosol generating substrate 10, the hole walls of the air hole 10a are connected head to tail to form a closed hole.

By providing the air hole 10a, the surface area (the side wall of the air hole 10a is equivalent to a part of a surface of the aerosol generating substrate 10) of the aerosol generating substrate 10 may be increased, for heat of the aerosol generating substrate 10 to enter the interior of the aerosol generating substrate 10 from the outer surface of the aerosol generating substrate 10. Compared with the structure in the existing technology in which transfer is performed directly inside the aerosol generating substrate 10, the aerosol generating substrate 10 can improve the heating efficiency.

Exemplarily, the cross-sectional area of the air hole 10a ranges from 0.0019 mm² to 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, and 30 mm².

When the cross-sectional area of the air hole 10a is greater than 30 mm², the quantity of the air holes 10a is relatively small, and scorch is prone to being generated on the aerosol generating substrate 10, and in a vaping state of the same volume, the internal flow rate of the substrate is small, and the aerosol is prone to being deposited, leading to a low utilization of the substrate. In addition, uneven release of the aerosol is prone to occurring on the aerosol generating substrate 10 (for example, large release amounts of the first two times of vaping and small release amounts of the subsequent times of vaping), resulting in the impact on the vaping experience of a user.

When the cross-sectional area of the air hole 10a is less than 0.0019 mm², the difficulty in a forming process may be significantly increased, the size of the air hole 10a is not easy to be controlled, a bad product rate of the aerosol generating substrate 10 may be increased, and the aerosol generating substrate 10 is prone to having a large vaping resistance and a low utilization rate.

However, when the cross-sectional area of the air hole 10a ranges from 0.0019 mm² to 30 mm², the flow resistance of the aerosol generating substrate 10 is relatively small (that is, the vaping resistance during vaping is relatively small), the flow rate of the aerosol is suitable, the aerosol inside the aerosol generating substrate 10 can be easily extracted, the aerosol is uniformly released, and the utilization rate is relatively high. In addition, the aerosol generating substrate 10 is not prone to scorching. Therefore, the user experience is relatively high and the substrate is convenient to be processed and manufactured.

Exemplarily, referring to FIG. 17 to FIG. 21, the channel 10c includes a hole slot 10b, and the hole slot 10b is provided on the circumferential surface of the aerosol generating substrate 10. In other words a part of the region of the outer side wall of the aerosol generating substrate 10 is dimpled to form the hole slot 10b, which is equivalent to that the hole slot 10b having a groove shape may be seen on the outer side wall of the aerosol generating substrate 10.

Referring to FIG. 6, the outer wrapping layer 40 on the peripheries of the aerosol generating substrate 10 may enclose the hole slot 10b on the peripheries of the aerosol generating substrate 10, for the hole slot 10b to further serve as the air flow channel 10c of the aerosol. In this way, the air ingress amount and the extraction efficiency of the aerosol can be further increased. In addition, if the heating manner of the heating component is peripheral heating, the overall heating rate of the aerosol generating substrate 10 can be adjusted by using the heating manner, to improve the vaping experience of the user.

In some embodiments, referring to FIG. 35, all the channels 10c are the hole slots 10b. In other words, in this embodiment, there are no air holes 10a.

In some other embodiments, referring to FIG. 9 to FIG. 16 and FIG. 22 to FIG. 32, all the channels 10c are the air holes 10a. In other words, in this embodiment, there are no hole slots 10b.

In some other embodiments, referring to FIG. 17 to FIG. 21, some of all the channels 10c are hole slots 10b, and the other channels 10c are air holes 10a. In other words, in this embodiment, there are both air holes 10a and hole slots 10b.

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

The race track refers to: a shape similar to the shape of a track on a field and formed by two semi-circles and two parallel straight sides alternately connected to each other.

It is to be noted that, when there are a plurality of the air holes 10a, the shapes of the cross sections of the air holes 10a may be totally the same. Alternatively, the cross-sectional shapes of some air holes 10a are different, and the cross-sectional shapes of some air holes race track 10a are different. For example, in some embodiments, the cross-sectional shape of all of the air holes 10a may be circles, ellipses, triangles, rectangles, or the like. In some other embodiments, some of the air holes 10a are triangles, some of the air holes 10a are circles, or the like.

Exemplarily, a plurality of air holes 10a are provided, and the shape and the size of the air holes 10a are the same. For example, all of the air holes 10a are regular triangles, and the side lengths of all of the regular triangles are equal. Still for example, all of the air holes 10a are circles having the same radius. In this way, the air holes 10a of the aerosol generating substrate 10 may be formed based on a same forming mold, thereby reducing the manufacturing costs.

In an embodiment in which a plurality of air holes 10a are provided, the arrangement manner of the air holes 10a is not limited. For example, all of the air holes 10a are arranged in a matrix manner, an annular arrangement, a star-shaped arrangement, and a #-shaped arrangement.

It is to be noted that, in the embodiments of this application, the structures shown in FIG. 17 to FIG. 34 do not limit the relative size relationship between the air hole 10a and the aerosol generating substrate 10. The air holes 10a in FIG. 17 to FIG. 34 are merely used to illustrate an arrangement relationship of the air holes 10a more clearly, and does not particularly indicate specific sizes of the air holes 10a.

Exemplarily, referring to FIG. 10, FIG. 11, and FIG. 16 to FIG. 18, in an embodiment in which the cross section of the heating element insertion hole 10d is an elongated strip, the heating element insertion hole 10d is located on the central axis of the aerosol generating substrate 10, and on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the air holes 10a are symmetrically distributed about the heating element insertion hole 10d. In this embodiment, by using the heating element insertion hole 10d whose cross section is an elongated strip, the heating area of the substrate can be effectively increased, the overall heating rate and heating uniformity of the substrate can be increased, and the waiting time of the user can be reduced.

Exemplarily, referring to FIG. 12 to FIG. 15 and FIG. 23 to FIG. 29, in an embodiment in which the heating element insertion hole 10d is a columnar hole, the heating element insertion hole 10d is located on the central axis of the aerosol generating substrate 10, and in the plane perpendicular to the length direction of the aerosol generating substrate 10, and the air holes 10a are symmetrically distributed about the heating element insertion hole 10d by using same as the origin. Therefore, the distances between the heating element insertion hole and adjacent air holes 10a are the same, and when the heating rate is met (the distances to the heating element 20 are equal, and the aerosol can be easily released from the air holes 10a), the overall heating rate of the substrate is regulated in a matrix arrangement manner, and a relatively good heating consistency is achieved.

The arrangement manner of the air holes 10a is not limited. It is to be noted that, on the cross section perpendicular to the length direction of the aerosol generating substrate, all of the air holes 10a may be evenly distributed, or may be unevenly distributed.

It is to be noted that, the air holes 10a are in a form of “even distribution”, which includes that the air holes 10a are distributed in a matrix or concentric circles. In other words, the air holes 10a are arranged in a uniform form. It may be understood that, the air holes 10a may be uneven in the cross section of the aerosol generating substrate 10. In other words, the air holes 10a are evenly distributed, but the air holes 10a do not evenly divide the whole aerosol generating substrate 10. For example, if the cross section of the aerosol generating substrate 10 is a circle, the air holes 10a distributed in the matrix are not evenly distributed in the circular cross section.

Exemplarily, referring to FIG. 16 to FIG. 25, and FIG. 30 to FIG. 32, all of the air holes 10a are distributed on a plurality of trajectory lines. The air holes 10a on an individual trajectory line are linearly arranged along a first direction Z1, a plurality of trajectory lines are arranged along a second direction Z2, and the first direction Z1 is not parallel to the second direction Z2. The first direction Z1 and the second direction Z2 form a planar two-dimensional coordinate system, and the first direction Z1 and the second direction Z2 can define a planar arrangement manner of the air holes 10a. In other words, the air holes 10a are regularly arranged. In this way, it is convenient to process the air holes 10a according to a predetermined arrangement rule in a forming process.

Exemplarily, the air holes 10a in an individual row are equidistantly arranged. Equidistant arrangement refers to that the distances between hole centers of two adjacent air holes 10a are equal. In this way, the shape and the size of substrate walls between two adjacent air holes 10a are approximately the same. Therefore, in a process of vaping by heating, the uniformity of releasing an aerosol by the aerosol generating substrate 10 is improved, and the uniformity of transferring the aerosol and the uniformity of applying heat are improved, thereby improving the vaping experience of a user.

It is to be noted that, the first direction Z1 may be a straight line, or may be a curved line; the second direction Z2 may be a straight line, or may be a curved line.

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

Exemplarily, in a case that the first direction and the second direction are mutually perpendicular straight line directions, referring to FIG. 24 and FIG. 25, the distance between two adjacent air holes 10a on an individual trajectory line is equal to the distance between two air holes 10a on two adjacent trajectory lines. In this way, the substrate wall thicknesses of any two adjacent air holes 10a are the same, so as to evenly heat and evenly release an aerosol.

Exemplarily, in some embodiments, referring to FIG. 24 and FIG. 25, the air holes are distributed in a matrix type. Specifically, the matrix distribution refers to an N*M overall arrangement manner, where N represents a quantity of the air holes 10a on an individual trajectory line, M represents a quantity of the trajectory lines, and N and M may be the same or may be different.

Exemplarily, in some other embodiments, referring to FIG. 16 and FIG. 17, the distribution manner of the air holes 10a is: distribution behind vertex points is omitted based on matrix distribution.

In an embodiment, the air holes 10a on an individual trajectory line are repeatedly arranged, and repeated arrangement means that all of outlet holes 10a in a same row of outlet holes 10a are completely the same. In the directions extending outward along the radial directions of the aerosol generating substrate 10, the aperture of the air holes 10a on each trajectory line gradually increases. In other words, apertures of the air holes 10a on different trajectory lines are different, and a larger distance from the center of the aerosol generating substrate 10 indicates a larger aperture of the air hole 10a. Exemplarily, referring to FIG. 30, for example, a plurality of trajectory lines arranged in a ring shape are used. The aperture of the air holes 10a may gradually increase from an air hole 10a on a first trajectory line close to the center of the aerosol generating substrate 10 to an air hole 10a on a last trajectory line far away from the center of the aerosol generating substrate 10. Certainly, in other embodiments, alternatively, the air holes 10a may be arranged in a matrix manner. In the directions extending outward along the radial directions of the aerosol generating substrate 10, the aperture of the air holes 10a on each trajectory line may gradually increase.

In an embodiment, all of air holes 10a on an individual trajectory line are repeatedly arranged, and in the directions extending outward along the radial directions of the aerosol generating substrate 10, the spacing between air holes 10a on two adjacent trajectory lines gradually decreases, that is, the wall thickness of a spacing wall between air holes 10a on two adjacent trajectory lines may gradually decrease. In other words, the plurality of trajectory lines are not equidistantly distributed, and a further distance from the center of the aerosol generating substrate 10 indicates a smaller wall thickness of a spacing wall between two adjacent trajectory lines. Exemplarily, for example, a plurality of trajectory lines arranged in a ring shape are used. The wall thickness of the spacing wall between the air holes 10a on two adjacent trajectory lines may gradually reduce from an air hole 10a on a first trajectory line close to the center of the aerosol generating substrate 10 to an air hole 10a on a last trajectory line far away from the center of the aerosol generating substrate 10. Certainly, in other embodiments, alternatively, the air holes 10a may be arranged in a matrix manner. In the directions extending outward along the radial directions of the aerosol generating substrate 10, the wall thickness of the spacing wall between the air holes 10a on two adjacent trajectory lines becomes smaller.

For an aerosol generating substrate 10 having a larger aperture of air holes 10a in directions away from the center of the aerosol generating substrate 10 and an aerosol generating substrate 10 having a smaller wall thickness of spacing walls between air holes 10a on two adjacent trajectory lines in directions away from the center of the aerosol generating substrate 10, a region thereof closer to the center of the aerosol generating substrate 10 has a larger mass of the aerosol generating substrate 10 per unit volume. When a center heating manner is adapted, a relatively long time is required for heat to be transferred from the inside to the outside, for the time for the outer side wall position of the aerosol generating substrate 10 to be heated to be prolonged (given a particular amount of heat provided to the aerosol generating substrate 10, a larger mass of the substrate indicates a longer time required for heating same to a set temperature). Therefore, the uniformity of the aerosol released by the aerosol generating substrate 10 is improved, and the duration of vaping and the number of puffs of vaping are increased. In addition, the consistency of release of the aerosol can be maintained, bringing a comfortable vaping experience to a user.

In some other embodiments, alternatively, the air holes 10a on an individual trajectory line may be repeatedly arranged, and in the radial directions of the aerosol generating substrate 10, the aperture on the individual trajectory line on the outermost side far away from the center of the aerosol generating substrate 10 is greater than the aperture of the individual trajectory line on the innermost side. In other words, the aperture of air holes 10a on only the outermost trajectory line increases, that is, the aperture of air holes 10a on the trajectory line furthest away from the center of the aerosol generating substrate 10 increases, and the apertures of the air holes 10a on the other trajectory lines, apart from the air holes 10a on the outermost trajectory line, are the same. According to this embodiment, when the aerosol generating substrate 10 is adapted to a center heating manner, a relatively long time is required for heat to be transferred from the inside to the outside, for the time for the outer side wall position of the aerosol generating substrate 10 to be heated to be prolonged. Therefore, the uniformity of the aerosol released by the aerosol generating substrate 10 is improved, and the duration of vaping and the number of puffs of vaping are increased. In addition, the consistency of release of the aerosol can be maintained, bringing a comfortable vaping experience to a user.

In some other embodiments, referring to FIG. 16, FIG. 17, FIG. 24, and FIG. 25, an individual trajectory line is linearly arranged along a first direction Z1, a plurality of trajectory lines are parallelly arranged along a second direction Z2, and the first direction Z1 is perpendicular to the second direction Z2. As shown in FIG. 16 and FIG. 17, an individual trajectory line is linearly arranged along a first direction Z1, and a plurality of trajectory lines are parallelly arranged along a second direction Z2, to form a plurality of rows of non-matrix arranged air holes 10a. As shown in FIG. 25, the plurality of trajectory lines are arranged in a matrix type.

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, and for example, may be a circle, an ellipse, or a polygon. This is not limited herein.

Exemplarily, in this embodiment of this application, for example, the aerosol generating substrate 10 is of cylindrical shape for description, that is, the contour of the cross section of the aerosol generating substrate 10 is approximately a circle. The profile of the aerosol generating substrate 10 of the cylindrical shape is regular, and can reduce the difficulty of the manufacturing process.

In some embodiments, the air holes 10a in the embodiments of this application extend along a straight line.

In some other embodiments, the air holes 10a extend along a curve, for example, extend helically. Exemplarily, referring to FIG. 32 to FIG. 34, the channel 10c includes a plurality of helical holes. The helical holes are disposed inside the aerosol generating substrate 10. That at least some regions of the helical holes along the extension directions are in a curved shape whose curvature is not 0 means that at least some regions of the helical holes along the extension directions are not in a straight shape whose curvature is 0. For example, along the extension directions of the helical holes, the helical holes may have both a curved section whose curvature is not 0 and a straight section whose curvature is 0, or may have only a curved section whose curvature is not 0 and no straight section whose curvature is 0. In other words, the helical holes can extend in any direction from starting points to end points of the extension directions as long as the helical holes do not extend along straight lines.

By providing the helical holes, the surface area of the aerosol generating substrate 10 (the side walls of the helical holes are equivalent to parts of a surface of the aerosol generating substrate 10), for heat of the aerosol generating substrate 10 to enter the interior of the aerosol generating substrate 10 from the outer surface of the aerosol generating substrate 10. Compared with the material of an aerosol-generation section, in the existing technology, in which the heat is directly transferred inside without providing an air passage, the present application can improve the heat efficiency. In addition, given a particular volume of an aerosol to be vaped, the helical holes can lengthen air flow paths, and increase a flow speed of the air flow in the aerosol generating substrate 10, so as to improve the impingement force of the air flow, for the aerosol to be mixed more uniformly, thereby improving the extraction efficiency and the uniformity of the aerosol in the aerosol generating substrate 10, and improving the feeling of vaping for a user. In other words, compared with the material of an aerosol-generation section in the existing technology, the aerosol generating substrate 10 in the embodiments of this application can improve the use experience of a user.

Exemplarily, usually two or more helical holes are provided, and the helical holes are symmetrically disposed around the heating element insertion hole 10d.

In some other embodiments, referring to FIG. 26 to FIG. 29, the channel 10c includes a plurality of air holes 10a. The air holes 10a are provided inside the aerosol generating substrate 10. All of the air holes 10a are provided in an individual row, that is, the air holes 10a are linearly arranged in a first direction Z1. The first direction Z1 may be a straight line or a curved line. In other words, the air holes 10a are regularly arranged. In this way, it is convenient to process the air holes 10a according to a predetermined arrangement rule in a forming process. Exemplarily, the central line of the heating element insertion hole 10d along the extension direction coincides with the central axis of the aerosol generating substrate 10 along the length direction, and the air holes 10a are arranged along a circumferential direction around the center of the heating element insertion hole 10d.

Exemplarily, referring to FIG. 26 to FIG. 29, the air holes 10a in this embodiment each has a sector ring shape. The plurality of air holes 10a are uniformly arranged around a circumferential direction of the heating element 20. For example, when three air holes 10a are provided, the center angle corresponding to each air hole 10a is 120°. When four air holes 10a are provided, the center angle corresponding to each air hole 10a is 90°. When six air holes 10a are provided, the center angle corresponding to each air hole 10a is 60°.

In this embodiment, a radial spacing wall is provided between two adjacent air holes 10a, and the wall thickness at any position of an individual radial spacing wall may be the same, or may be different.

In this embodiment, the sector ring-shaped air holes 10a can effectively increase the flow rate of a fresh air flow in the air holes 10a, for the proportion of an aerosol in the air flow to be reduced, to reduce the temperature of the aerosol extracted. When a user vapes interstitially, the waste of the aerosol is relatively small, and in this way, the utilization rate of the aerosol can be increased.

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

For example, in some embodiments, the heating element 20 at least is provided with an electromagnetic induction portion, configured to generate heat by sensing a change of an external magnetic field. In this embodiment, the electrical energy output portion is an induction coil. In this embodiment, energy is transferred between the electrical energy output portion and the heating element 20 in a non-contact manner.

The specific material of the electromagnetic induction portion is not limited. For example, the electromagnetic induction portion may be a metal, or may be an electrically-conductive ceramics, or may be another material.

It is to be noted that, the arrangement manner of the induction coil is not limited, and may be arranged on a circumferential side wall of the heating bin 200a, or may be arranged on a bottom wall of the heating bin 200a. This is not limited herein.

In the foregoing embodiment, the configuration of the heating element 20 is not limited. For example, in some embodiments, the heating element 20 is entirely formed by a metal material or an electrically conductive ceramics, that is, the heating element 20 is entirely an electromagnetic induction portion. In some other embodiments, the heating element 20 includes an insulation base and the foregoing electromagnetic induction portion. The electromagnetic induction portion is in a layered form and is disposed on the surface of the insulation base.

In some other embodiments, the heating element 20 includes an electrical processing portion and a contact portion electrically connected to the electrical processing portion. The contact portion is configured to be in contact with an external power supply terminal, for the electrical processing portion to be powered and generate heat. In this embodiment, the electrical energy output portion includes two positive power supply terminals and negative power supply terminals. The contact portion includes a positive contact and a negative contact. The positive contact is in contact with the positive power supply terminal, and the negative contact is in contact with the negative power supply terminal. In this way, the electrical heating portion can be connected to an electrical circuit. After the aerosol generating device 200 is started, the heating element 20 receives energy, and starts to heat the aerosol generating product 100 accommodated in the aerosol generating device 200. In this embodiment, electrical energy is transferred between the electrical energy output portion and the heating element 20 in a contact manner.

The specific material of the electrical heating portion is not limited. For example, the electrical heating portion may be a metal, an electrically-conductive ceramics, or may be another material.

In the foregoing embodiment, the configuration of the heating element 20 is not limited. For example, in some embodiments, the heating element 20 is entirely formed by a metal material or an electrically conductive ceramics. In some other embodiments, the heating element 20 further includes an insulation base, and the electrical heating portion is disposed on the insulation base.

In a specific embodiment, as shown in FIG. 3 and FIG. 4, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross section of the heating element insertion hole 10d is an elongated strip or a circle. A sheet-shaped or solid columnar heating element 20 is correspondingly provided in the aerosol generating device 200, and the sheet-shaped or solid columnar heating element has a relatively good heating rate, a convenient operation manner (facilitating insertion and fitting with the heating element insertion hole 10d), and a relatively low production cost. The heating element 20 is inserted into the heating element insertion 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 manner may be heating by a resistor. For example, a resistive film may be applied/printed on the outside of the heating element 20, and in an on state, heat is generated by using the resistor, to heat and bake the aerosol generating substrate 10. In another embodiment, alternatively, the heating element 20 may be configured to heat and bake the aerosol generating substrate 10 in an on state by using infrared radiation. In this case, the outer surface of the heating element 20 may be applied with an infrared material.

In another specific embodiment, as shown in FIG. 3 below, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross section of the heating element insertion hole 10d is a circle, and the aerosol generating device 200 is correspondingly provided with a hollow tube-shaped heating element 20. This may increase an aerosol capture path (the air flow may flow into the aerosol generating substrate 10 from a lower portion of the heating element), thereby improving the utilization rate of the aerosol generating substrate 10. In addition, the energy losses (the mass of the heating element is low and losses are small) may be reduced by using the hollow tube-shaped heating element 20, thereby improving the single endurance of the device, and improving the use experience of a consumer. The heating element 20 is inserted into the heating element insertion hole 10d inside the aerosol generating substrate 10, to heat and bake the aerosol generating substrate 10 from the inside to the outside. For example, the heating manner is electromagnetic heating. The aerosol generating device 200 includes a power supply, a control circuit, and a coil connected to the control circuit. When the coil is powered, a magnetic field is generated. The hollow tube-shaped heating element 20 carried in the aerosol generating device 200 generates heat under the magnetic field, to heat the aerosol generating product 100.

In still another specific embodiment, as shown in FIG. 2 below, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross section of the heating element insertion hole 10d is a ring. One end of the heating element insertion hole 10d close to the bottom of the aerosol generating substrate 10 is an open end, to facilitate insertion of the heating element 20 in the aerosol generating device 200. One end of the heating element insertion hole 10d close to the filter segment is a closed end, to maintain the integrity of the substrate. The aerosol generating device 200 is correspondingly provided with a hollow tube-shaped heating element 20, and therefore a relatively large heat transfer area can be provided without reducing the mass (the total content of the aerosol) of the aerosol generating substrate 10, and the heating uniformity of the aerosol generating substrate 10 is increased, thereby improving the vaping experience of a consumer. The heating element 20 is inserted into the heating element insertion hole 10d inside the aerosol generating substrate 10, to heat and bake the aerosol generating substrate 10 from the inside to the outside.

Brief descriptions of eight embodiments are provided below with reference to the accompanying drawings.

First Embodiment

Referring to FIG. 10 and FIG. 11, in this embodiment, one heating element insertion hole 10d is provided. Referring to FIG. 10, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the cross section of the heating element insertion hole 10d is an elongated strip, and is disposed on the central axis of the aerosol generating substrate 10. Correspondingly, the heating element 20 has a flat sheet shape.

Referring to FIG. 11, in this embodiment, the structure of the aerosol generating substrate 10 is generally the same as that in the First Embodiment, and differences mainly include: in this embodiment, rounded corners are disposed at corners of the elongated strip-shaped heating element insertion hole 10d, for the heating element 20 to be more easily inserted into the heating element insertion hole 10d.

In this embodiment, no channel 10c is provided in the aerosol generating substrate 10. It may be understood that, in other embodiments, alternatively, one or a plurality of channels 10c may also be provided in the aerosol generating substrate 10.

In this embodiments, the heating element insertion hole 10d is processed during preparing of the aerosol generating substrate 10, and during use, the heating element 20 is inserted into the heating element insertion hole 10d. In this way, when the heating element 20 is inserted into the heating element insertion hole 10d, the heating element 20 slightly extrudes or does not extrude the structure around the heating element insertion hole 10d at all, for the aerosol generating substrate 10 to be kept in a relatively uniform substrate density. Therefore, the problems of deformation or crack of an outer wrapping layer 40 that wraps around the circumferential outer portion of the aerosol generating substrate 10 are not prone to occurring. In addition, when the aerosol generating substrate 10 is separated from the aerosol generating device 200 after being used up by heating, the aerosol generating substrate 10 is not prone to being adhered to the heating element or falling into a heating bin 200a. Therefore, the heating bin 200a is not prone to being polluted and the cleaning workload of a user can be reduced.

Second Embodiment

Referring to FIG. 12 to FIG. 15, in this embodiment, the structure of the aerosol generating substrate 10 is generally the same as that of the First Embodiment, and differences mainly include: In this embodiment, the heating element insertion hole 10d is a columnar hole.

In this embodiment, no channel 10c is provided in the aerosol generating substrate 10. It may be understood that, in other embodiments, alternatively, one or a plurality of channels 10c may also be provided in the aerosol generating substrate 10.

Third Embodiment

Referring to FIG. 16, FIG. 22, and FIG. 30, in this embodiment, the structure of the aerosol generating substrate 10 is generally the same as that of the First Embodiment, and differences mainly include: in this embodiment, the channel 10c includes a plurality of air holes 10a.

All the air holes 10a are arranged mirror-symmetrically about the heating element 20. The air holes 10a extend along straight lines.

In an arrangement manner of the air holes 10a shown in FIG. 16, the first direction Z1 and the second direction Z2 are both straight lines. However, quantities of the air holes 10a in at least two rows of air holes 10a are different. As shown in FIG. 22 and FIG. 30, the air holes 10a are arranged in concentric circles.

In this embodiment, no hole slots 10b are provided on the circumferential outer surface of the aerosol generating substrate. It may be understood that, in other embodiments, alternatively, one or a plurality of hole slots 10b may be provided on the circumferential outer surface of the aerosol generating substrate.

Fourth Embodiment

Referring to FIG. 17 and FIG. 18, in this embodiment, the structure of the aerosol generating substrate 10 is generally the same as that of the Third Embodiment, and differences mainly include: In this embodiment, hole slots 10b are provided on the circumferential outer surface of the aerosol generating substrate.

All the air holes 10a are arranged mirror-symmetrically about the heating element 20. The air holes 10a extend along straight lines.

In an arrangement manner of the air holes 10a shown in FIG. 17, the first direction Z1 and the second direction Z2 are both straight lines. However, quantities of the air holes 10a in at least two rows of air holes 10a are different. As shown in FIG. 18, the air holes 10a are arranged in concentric circles.

Fifth Embodiment

Referring to FIG. 24 and FIG. 25, in this embodiment, the structure of the aerosol generating substrate 10 is generally the same as that of the Third Embodiment, and differences mainly include: in an arrangement manner of the air holes 10a, the first direction Z1 is perpendicular to the second direction Z2.

The air holes 10a extend along straight lines.

In a distribution manner of the air holes 10a, as shown in FIG. 24, when the number of the individual trajectory lines is a single-digit number, the heating element insertion hole 10d coincides with the middlemost air hole 10a. As shown in FIG. 25, when the number of the individual trajectory lines is a double-digit number, the heating element insertion hole 10d does not coincide with the middlemost air hole 10a.

In this embodiment, no hole slots 10b are provided on the circumferential outer surface of the aerosol generating substrate. It may be understood that, in other embodiments, alternatively, one or a plurality of hole slots 10b may be provided on the circumferential outer surface of the aerosol generating substrate.

Sixth Embodiment

Referring to FIG. 27 to FIG. 29, in this embodiment, the heating element insertion hole 10d is a columnar hole and is located on the central axis of the aerosol generating substrate.

The air hole 10a has a sector-ring shape. The plurality of air holes 10a are uniformly arranged around a circumferential direction of the heating element 20. For example, when three air holes 10a are provided, the center angle corresponding to each air hole 10a is 120°. When four air holes 10a are provided, the center angle corresponding to each air hole 10a is 90°. When six air holes 10a are provided, the center angle corresponding to each air hole 10a is 60°. In this embodiment, a radial spacing wall is provided between two adjacent air holes 10a, and the wall thickness at any position of an individual radial spacing wall may be the same, or may be different.

In this embodiment, the sector ring-shaped air holes 10a can effectively increase the flow rate of a fresh air flow in the air holes 10a, for the proportion of an aerosol in the air flow to be reduced, to reduce the temperature of the aerosol extracted. When a user vapes interstitially, the waste of the aerosol is relatively small, and in this way, the utilization rate of the aerosol can be increased.

Seventh Embodiment

Referring to FIG. 26, in this embodiment, an arc-shaped spacing wall is additionally provided in the air hole 10a in the Sixth Embodiment, to divide the individual air hole 10a in the Sixth Embodiment into a plurality of air holes 10a arranged in the radial directions. The air holes 10a have smaller volumes and a large quantity, and the plurality of air holes 10a are distributed similar to a spider web.

The thickness of the arc-shaped spacing wall is equal to that of the radial spacing wall. In other embodiments, the two thicknesses may alternatively be different.

In the radial directions, the thickness of each layer of arc-shaped spacing wall is identical. In another embodiment, the thickness of each layer of arc-shaped spacing wall may alternatively differ. For example, in the directions extending inwards along the radial directions, the thickness gradually increases or gradually decreases.

The widths of each layer of the air holes 10a along the radial directions are the same. In another embodiment, the thickness of each layer of arc-shaped spacing wall may alternatively differ. For example, in the directions extending inwards along the radial directions, the width gradually increases or gradually decreases.

In this embodiment, the air holes 10a are not in communication with each other. That is, an air flow in any one of the air holes 10a does not pass to another air hole 10a.

In this embodiment, the radial spacing walls of each layer of the air holes 10a are aligned, that is, the radial spacing walls are located on a same straight line.

Eighth Embodiment

Referring to FIG. 32 to FIG. 34, the air holes 10a extend helically, that is, helical holes. The helical holes help to increase the extraction efficiency of the aerosol (given same vaping resistance, the extraction efficiency of the aerosol is increased by increasing a path length of the gas in the helical holes and increasing the flow rate of the air flow and the contact area between the air flow and the hole walls of the air holes 10a).

While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.