CN119366685A

CN119366685A - An aerosol generating product and an aerosol generating system

Info

Publication number: CN119366685A
Application number: CN202310928877.6A
Authority: CN
Inventors: 倪军; 李文凤; 代学志; 汤建国; 金祖涛; 黄鹏飞; 胡梦阳
Original assignee: Seymour International Holdings Ltd
Current assignee: Seymour International Holdings Ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2025-01-28
Also published as: WO2025020838A1

Abstract

The aerosol generating product and the aerosol generating system provided by the embodiment of the application comprise a medium section, a functional section and a filtering section which are sequentially arranged along a first direction, wherein the medium section and the functional section are of an integrated structure, at least one first air passage hole is formed in the medium section and penetrates through at least one end of the medium section along the first direction, at least one second air passage hole is formed in the functional section and penetrates through at least one end of the functional section along the first direction. The medium section and the functional section of the aerosol-generating product provided by the embodiment of the application are of an integrated structure, so that the high temperature resistance of the functional section is improved, the structural stability of the functional section is improved, deformation and melting are not easy to occur after the functional section is heated, the conditions of releasing miscellaneous gas, affecting suction resistance and blocking an air passage can be improved to a certain extent, and the use experience of a user is improved. In addition, the surface area of the medium section can be increased through the first air passage holes, heat transfer is facilitated, and heating efficiency is improved.

Description

Aerosol generating product and aerosol generating system

Technical Field

The application relates to the technical field of smoking articles, in particular to an aerosol-generating article and an aerosol-generating system.

Background

Smoking articles include smoking articles that form an aerosol by ignition and smoking articles that form an aerosol by heating without combustion, wherein in a typical heated without combustion smoking article it comprises an aerosol-generating substrate that volatilizes upon heating to generate an aerosol and a functional segment that cooperates with the aerosol-generating substrate to effect drawing of the aerosol, the aerosol-generating substrate being heated by an external heat source just to a degree sufficient to emit a flavour, the aerosol-generating substrate not combusting but releasing the aerosol by loading an aerosol, in use by high temperature heating, to form a smoke.

In the prior art, the functional section is made of materials which are easy to generate phase change or deformation, such as a hollow paper tube (including inner/outer aluminum foil, a laminated paper tube and the like), a corrugated tube, a silica gel piece, a hollow acetate fiber structure and the like, and after the functional section is heated to generate deformation and fusion, part of air passages can be blocked, miscellaneous gas is released, the sense of feel is influenced, the suction resistance is influenced, and therefore the use experience of a user is reduced.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an aerosol-generating article and an aerosol-generating system that can enhance the feel of the use experience of a user.

To achieve the above object, an embodiment of the present application provides an aerosol-generating article, the aerosol-generating article including a medium section, a functional section, and a filter section sequentially arranged along a first direction, the medium section and the functional section being of a unitary structure;

the multifunctional medium section is characterized in that at least one first air passage hole is formed in the medium section, the first air passage hole penetrates through at least one end of the medium section in the first direction, at least one second air passage hole is formed in the functional section, and the second air passage hole penetrates through at least one end of the functional section in the first direction.

In one embodiment, the media segment, the functional segment, and the filter segment are separable structures.

In one embodiment, the sum of the cross-sectional areas of all of the second airway holes is greater than or equal to the sum of the cross-sectional areas of all of the first airway holes in a plane perpendicular to the first direction of the aerosol-generating article.

In one embodiment, the cross-sectional area of a single second airway aperture is greater than or equal to the cross-sectional area of a single first airway aperture in a plane perpendicular to the first direction of the aerosol-generating article.

In one embodiment, the hydraulic diameter of the individual second airway orifice is greater than or equal to the hydraulic diameter of the individual first airway orifice.

In one embodiment, the number of second airway holes is less than or equal to the number of first airway holes.

In one embodiment, the sum of the cross-sectional areas of all of the second airway holes is smaller than the sum of the cross-sectional areas of all of the first airway holes in a plane perpendicular to the first direction of the aerosol-generating article.

In one embodiment, the cross-sectional area of a single second airway orifice is smaller than the cross-sectional area of a single first airway orifice or the hydraulic diameter of a single second airway orifice is smaller than the hydraulic diameter of a single first airway orifice in a plane perpendicular to the first direction of the aerosol-generating article.

In one embodiment, the number of second airway holes is greater than the number of first airway holes.

In one embodiment, the cross-sectional shape of the second airway orifice is at least one of circular, elliptical, racetrack, polygonal, and fan-shaped in a plane perpendicular to the first direction of the aerosol-generating article.

In one embodiment, the aerosol-generating article is internally provided with at least one cavity.

In one embodiment, the functional section is a support section or a cooling section.

In one embodiment, the dielectric segment and the functional segment are spaced apart to define the cavity.

In one embodiment, the filter segment and the functional segment are spaced apart to define the cavity.

In one embodiment, the medium section is provided with the cavity at least at an end remote from the functional section.

In one embodiment, the filter section is provided with the cavity at least at an end remote from the functional section.

In one embodiment, the two ends of the functional section are in contact with the media section and the filter section, respectively.

In one embodiment, a central air passage is arranged in the functional section, the central air passage penetrates through two ends of the functional section along a first direction, the number of the second air passage holes is multiple, the second air passage holes are arranged on the periphery side of the central air passage at intervals, and the cross section area of the central air passage is larger than the cross section area of the second air passage holes on a plane perpendicular to the first direction of the aerosol-generating product.

In one embodiment, the number of the second air passage holes is plural, and each of the second air passage holes is formed in the functional section in a uniformly distributed manner.

In one embodiment, the medium section, the functional section and the filtering section are cylinders with identical outer diameters and coaxially arranged, and the first direction is the axial direction of the medium section, the functional section and the filtering section.

In one embodiment, the filtering section is a hollow acetate fiber structure or a solid acetate fiber structure.

An embodiment of the invention also provides an aerosol-generating system comprising an aerosol-generating device comprising a heating element for heating the medium section to generate an aerosol, and the aerosol-generating article of any of the preceding embodiments.

The embodiment of the application provides an aerosol generating product, which comprises a medium section, a functional section and a filtering section, wherein the medium section, the functional section and the filtering section are sequentially arranged along a first direction, the medium section can generate aerosol when being heated, the functional section mainly acts as support and cooling, and the filtering section is used for filtering the aerosol flowing through the functional section.

The medium section and the functional section of the aerosol-generating product provided by the embodiment of the application are of an integrated structure, the functional section is of an integrated structure provided with the second air passage hole, for example, the functional section is of an integrated structure formed by adopting inorganic materials such as calcium carbonate, alumina, diatomite, calcined kaolin and the like, food-grade silica gel, microcrystalline cellulose, konjac gum, starch, plant polysaccharide and the like, LDPE (low density polyethylene), PP (polypropylene), TPE (thermoplastic elastomer), PLA (polylactic acid), TPE modified PP, TPE modified PE (polyethylene) and the like or any one or more of the combined materials, and the like, so that the high temperature resistance of the functional section is improved, the structural stability of the functional section is improved, deformation and melting are not easy to occur after heating, the conditions of releasing miscellaneous gases, affecting the absorption resistance and blocking the air passage can be improved to a certain extent, and the use experience of a user is improved. In addition, the surface area of the medium section can be increased through the first air passage holes, heat transfer is facilitated, and heating efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of an aerosol-generating article according to an embodiment of the application;

Fig. 2 is a cross-sectional view of the aerosol-generating article shown in fig. 1, wherein the dashed arrow indicates the flow direction of the airflow in the aerosol-generating article;

fig. 3 is a schematic cross-sectional view of an aerosol-generating article according to a second embodiment of the application;

fig. 4 is a schematic cross-sectional view of an aerosol-generating article according to a third embodiment of the application;

Fig. 5 is a schematic drawing in section of an aerosol-generating article according to a fourth embodiment of the application;

Fig. 6 is a schematic drawing in section of an aerosol-generating article according to a fifth embodiment of the application;

fig. 7 is a schematic drawing in section of an aerosol-generating article according to a sixth embodiment of the application;

Fig. 8 is a schematic drawing in section of an aerosol-generating article according to a seventh embodiment of the application;

Fig. 9 is a schematic cross-sectional view of an aerosol-generating article according to an eighth embodiment of the application;

Fig. 10 is a schematic drawing in section of an aerosol-generating article according to a ninth embodiment of the application;

fig. 11 is a schematic drawing in section of an aerosol-generating article according to a tenth embodiment of the application;

Fig. 12 is a schematic view in cross-section of an aerosol-generating article according to an eleventh embodiment of the application;

fig. 13 is a schematic drawing in section of an aerosol-generating article according to a twelfth embodiment of the application;

fig. 14 is a schematic view in cross-section of an aerosol-generating article according to a thirteenth embodiment of the application;

fig. 15 is a schematic cross-sectional view of an aerosol-generating article according to a fourteenth embodiment of the application;

fig. 16 is a schematic view of the functional segment shown in fig. 4.

Description of the reference numerals

10. Media segment 10a, first air passage hole 20, functional segment 20a, second air passage hole 20b, central air passage 30, filtering segment 40, wrapping layer 100, aerosol-generating article 100a, cavity.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

In the description of the present application, the "first direction" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1 and 2, and it should be understood that these orientation terms are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

An embodiment of the present application provides an aerosol-generating article, referring to fig. 1 to 16, comprising a media segment 10, a functional segment 20 and a filter segment 30 arranged in sequence along a first direction. That is, the functional section 20 is located between the filtering section 30 and the medium section 10, the functional section 20 is used for supporting and/or cooling, improving the "mouth-scalding" phenomenon when the user pumps the aerosol, and the filtering section 30 is used for filtering the cooled aerosol.

Specifically, referring to fig. 2 and 3, the two ends of the functional section 20 along the first direction are respectively contacted with the medium section 10 and the filtering section 30, at this time, the functional section 20 can support the medium section 10 and the filtering section 30, so as to increase the overall strength of the aerosol-generating product, meanwhile, since the functional section 20 has the second air passage hole 20a, the function of adjusting the suction resistance can be achieved, and in addition, the aerosol generated by the medium section 10 passes through the functional section 20 with a certain length, so that the temperature of the aerosol can be reduced, that is, in this embodiment, the functional section 20 has the functions of supporting, cooling and adjusting the suction resistance.

Referring to fig. 8, the functional section 20 is spaced apart from the medium section 10 and the filtering section 30, and the functional section is mainly used for cooling and adjusting the suction resistance. It will be appreciated that in other embodiments, the functional segment 20 may also be used primarily to support and adjust the resistance to draw, as the invention is not limited in this regard.

It should be noted that, the filter section 30 is used for filtering the aerosol, and it is understood that, as the aerosol flows through the filter section 30, the filter section 30 also has a function of further cooling the aerosol.

The aerosol-generating article 100 generates an aerosol by means of the medium section 10, and the functional section 20 is not used for generating an aerosol.

It should be noted that the aerosol-generating article 100 according to the embodiment of the present application may be adapted to perform smoking by ignition or by heating without combustion. In the present embodiment, the aerosol-generating article 100 is described by way of example in which the smoking is performed in a manner suitable for heating without combustion.

The aerosol-generating article 100 is for use with an aerosol-generating device.

The media segment 10 is used to generate an aerosol for inhalation by a user when heated.

In an embodiment of the application, the media segments 10 are generally cylindrical. The column shape may be a column shape (i.e., a circular cross-sectional shape), a prismatic shape (i.e., a polygonal cross-sectional shape), an elliptical column shape (i.e., an elliptical cross-sectional shape), etc., without limitation.

Illustratively, the medium section 10, the functional section 20 and the filtering section 30 are in separable structures, which are not connected together by mechanical, physical structures or adhesives, but the medium section 10, the functional section 20 and the filtering section 30 can be in contact, and the medium section 10, the functional section 20 and the filtering section 30 are in combined structures, so that different medium sections 10 and different functional sections 20 can be reasonably matched to meet the requirements of customers on different pumping resistances.

The media segment 10 and the functional segment 20 are both of unitary construction, and in one embodiment, the media segment 10 is of unitary construction formed by extrusion, and the functional segment 20 is of unitary construction formed by extrusion. That is, the media segment 10 and the functional segment 20 are manufactured using the same manufacturing process. Compared with the prior art that the medium section and the filter section are manufactured by adopting different processing technologies, the medium section and the filter section are manufactured by adopting the same processing technology, and the production efficiency of aerosol generating products is improved.

In other embodiments, the media segment 10 and the filter segment may also be a unitary structure formed separately by injection molding, die casting, or the like.

For example, referring to fig. 2 to 15, at least one first air passage hole 10a is provided in the medium segment 10, and the first air passage hole 10a penetrates at least one end of the medium segment 10 along the first direction. I.e. the first gas passage holes 10a extend in a first direction of the media segment 10.

The number of the first air passage holes 10a is not limited, and may be one or a plurality of.

It should be noted that, the plurality of the embodiments of the present application refers to two or more.

The first air passage holes 10a extend through at least one end of the medium section 10 in the first direction means that the first air passage holes 10a may be opposite ends of the medium section 10 in the first direction (refer to fig. 2 to 15), and air flow may flow from one end of the medium section 10 in the first direction to the other end of the medium section 10 in the first direction through the first air passage holes 10 a.

Of course, one end of the first air passage hole 10a penetrates through the end surface of the medium section 10 along the first direction, and the other end of the first air passage hole 10a is a blind end. Wherein each first gas passage hole 10a may be the same end in the first direction throughout the media segment 10. In other embodiments, a portion of the first air passage holes 10a may extend through one end of the media segment 10 in the first direction, and another portion of the first air passage holes 10a may extend through the other end of the media segment 10 in the first direction.

It will be appreciated that the first air passage holes 10a extend through the ends of the media segment 10 in the first direction more advantageously reduces the resistance to suction by a user than the first air passage holes 10a extend through the ends of the media segment 10 in the first direction.

The first air passage holes 10a can increase the surface area of the medium section 10, facilitate heat transfer, and improve heating efficiency. Aerosol in the first air passage hole 10a is conveyed to the suction end under the action of suction negative pressure, and the first air passage hole 10a can reduce suction resistance of user suction and promote user experience. It should be noted that, the suction resistance is positively related to the flow resistance of the aerosol, the smaller the flow resistance of the aerosol in the medium segment 10 is, the smaller the suction resistance experienced by the user is, and the larger the flow resistance of the aerosol in the medium segment 10 is, the larger the suction resistance experienced by the user is.

The medium segment 10 is formed with micropores, and the micropores are communicated with each other and form micro air passages communicated with the first air passage holes 10 a. That is, the micro air passage communicates with the first air passage hole 10a, and since the micro air passage is formed by communication between micro holes, the micro holes communicate with the passage 10 a. In addition, it is understood that the micropores are communicated with each other, and may be partially communicated with each other, partially not communicated with each other, or all communicated with each other. For example, in embodiments where the media segment 10 is a particle combination, the pores are formed by particle-to-particle gaps. The size of the micropores is determined by the particle-to-particle gaps.

The first air passage holes 10a and the micro air passages can increase the surface area of the medium section 10, facilitate heat transfer and improve heating efficiency. The medium of the medium section 10 is heated to release aerosol, the aerosol is collected to the first air passage holes 10a through gaps among wall materials or micro air passages, the aerosol released by the atomized medium exposed to the first air passage holes 10a (i.e. the atomized medium positioned on the inner wall surfaces of the air passage holes) can be directly released to the first air passage holes 10a, and the aerosol between adjacent first air passage holes 10a can also circulate mutually through the micro air passages and is conveyed to the suction end under the action of suction negative pressure.

It should be noted that the specific type of the functional segment 20 is not limited herein, so long as the supporting and/or cooling function is provided. Illustratively, the functional segment 20 is a support segment or a cooling segment.

For example, referring to fig. 2 to 15, at least one second air passage hole 20a is provided in the functional section 20, and the second air passage hole 20a penetrates at least one end of the functional section 20 along the first direction. I.e. the second airway aperture 20a extends in the first direction of the functional segment 20.

By arranging the second air passage hole 20a, when the aerosol passes through the functional section 20, the aerosol can flow through the second air passage hole 20a, which is beneficial to cooling the aerosol. At the same time, by controlling the design parameters of the second airway orifice 20a, the resistance to draw is facilitated to be adjusted.

The number of the second air passage holes 20a is not limited, and may be one or a plurality.

The second air passage hole 20a extends through at least one end of the functional section 20 along the first direction, and the second air passage hole 20a may be opposite ends of the functional section 20 along the first direction (refer to fig. 2 to 15), and the air flow may flow from one end of the functional section 20 along the first direction to the other end of the functional section 20 along the first direction through the second air passage hole 20 a.

Of course, one end of the second air passage hole 20a may penetrate through the end surface of the functional section 20 along the first direction, and the other end of the second air passage hole 20a may be a blind end. Wherein each second air passage hole 20a may be the same end in the first direction throughout the functional section 20. In other embodiments, a portion of the second air passage hole 20a may extend through one end of the functional segment 20 in the first direction, and another portion of the second air passage hole 20a may extend through the other end of the functional segment 20 in the first direction.

It will be appreciated that the second air passage hole 20a extends through both ends of the functional segment 20 in the first direction more advantageously reduces the resistance to suction by the user than the second air passage hole 20a extends through one end of the functional segment 20 in the first direction.

The extrusion-molded functional segment 20 is also formed with micropores, that is, gaps between constituent components of the functional segment 20 constitute micropores, and the micropores are communicated with each other and form micro air passages communicated with the second air passage holes 20 a. When the aerosol passes through the functional section 20, part of the aerosol can flow through the second air passage hole 20a, and the other part of the aerosol can flow through the micro air passage, and when the aerosol flows through the micro air passage, the residence time of the aerosol is longer, so that the temperature of the aerosol is reduced. At the same time, the aerosol has larger flow resistance when flowing through the micro air passage, and can increase the suction resistance, that is, the suction resistance is favorably adjusted through the functional section 20.

The first air passage hole 10a and the second air passage hole 20a described above are holes in a macroscopic sense, and the micropores are holes in a microscopic sense, and the cross-sectional area of the first air passage hole 10a and the second air passage hole 20a is much larger than that of the micropores. Illustratively, the cross-sectional area of the first airway aperture 10a and the second airway aperture 20a is at least 20 times the cross-sectional area of the microwell. In the case where the size of the micro holes is kept substantially unchanged, when it is smaller than 20 times, the sizes of the first and second air passage holes 10a and 20a are caused to be too small, aerosol is not easily released into the first air passage hole 10a from the inner wall of the first air passage hole 10a, is not easily flowed into the second air passage hole 20a from the first air passage hole 10a, and causes a large suction resistance of the user and a reduction in the user's suction feeling. Therefore, in this embodiment, when the cross-sectional area of the first air passage hole 10a and the second air passage hole 20a is greater than or equal to 20 times of the cross-sectional area of the micro-holes, the release rate of the aerosol from the inner wall of the first air passage hole 10a and the flow rate in the second air passage hole 20a can be ensured, the suction resistance can be reduced, and the user suction experience can be improved.

In some embodiments, the cross-sectional area of the first air passage hole 10a and the second air passage hole 20a is 20 times to 60000 times the cross-sectional area of the micro-hole. If the cross-sectional area of the first air passage holes 10a and the second air passage holes 20a exceeds 60000 times the cross-sectional area of the micro-holes, this results in an excessively large area of the first air passage holes 10a and the second air passage holes 20a, a reduced overall mass of the generated aerosol and a reduced strength of the functional segments 20, a low utilization of the aerosol-generating substrate, and a larger heating rate, and an easy release of the aerosol from the micro-holes to the environment.

Illustratively, the cross-sectional area of the first air passage holes 10a and the second air passage holes 20a is 100 times to 40000 times the cross-sectional area of the micro-holes.

In some embodiments, the aperture of the first airway hole 10a ranges from 0.05mm (millimeter, millimeters) to 6mm. When the diameter of the air passage hole 10a is smaller than 0.05mm, the processing cost of the medium section 10 is high and problems of large suction resistance and low medium utilization rate easily occur. When the diameter of the first air passage hole 10a is greater than 6mm, the sectional area is large, the flow rate of the air flow in the suction state of the same volume is smaller, and the aerosol is easily deposited, so that the aerosol utilization rate is low.

The specific value of the aperture of the first gas passage hole 10a is not limited, and is, for example, 0.05mm, 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 5mm, 6mm, etc.

The apertures of the first air passage hole 10a and the second air passage hole 20a refer to equivalent diameters thereof.

Equivalent diameter refers to the diameter of a circle having the same cross-sectional area as the measurement object.

The first air passage holes 10a and the micro air passages can increase the surface area of the medium section 10, facilitate heat transfer and improve heating efficiency. The medium of the medium section 10 is heated to release aerosol, the aerosol is collected to the first air passage holes 10a through gaps among wall materials or micro air passages, the aerosol released by the atomized medium exposed to the first air passage holes 10a (i.e. the atomized medium positioned on the inner wall surface of the first air passage holes 10 a) can be directly released to the first air passage holes 10a, and the aerosol between adjacent first air passage holes 10a can also circulate mutually through the micro air passages and is conveyed to the suction end under the action of suction negative pressure.

The functional section 20 is of an integrated structure formed by extrusion, at least one second air passage hole 20a is formed in the functional section 20, the second air passage hole 20a penetrates through at least one end of the functional section 20 along the first direction, and the functional section 20 of the porous structure formed in the mode has the functions of supporting, cooling and adjusting the absorption resistance.

Illustratively, the media segment 10 is a particulate combination, also referred to as a powder combination, and is a reconstituted tobacco media, such as a reconstituted tobacco media containing components such as smoke agent, tobacco, and the like. The media segment 10 is a unitary structure, such as may be formed by an extrusion process. Extrusion molding is a processing method in which a raw material mixture is added into an extruder, and the raw material is pushed forward by a screw through the action between a barrel of the extruder and the screw, and continuously passes through a die of a discharge hole of the extruder to prepare various section products or semi-products. The dielectric structure formed by extrusion molding is strip-shaped. Thus, the medium section 10 is heated, pumped or stopped to be heated and is an integrated medium, the phenomenon of disintegration and dropping is not easy to occur, and the problems that the flaky, filiform or scattered particle medium section 10 in the prior art has the problems of loose flakes, filiform components, falling of particle components and difficult cleaning and the components are not uniform are solved.

For example, referring to fig. 1-15, the aerosol-generating article 100 includes a wrapping layer 40, the wrapping layer 40 wrapping circumferentially outward of the media segment 10, the functional segment 20, and the filter segment 30.

The wrapping layer 40 can protect the medium segment 10 to a certain extent, and reduce the surface area of the medium segment 10 directly exposed to the outside, so that the probability of moisture deterioration caused by contact of the medium segment 10 with air is reduced, and meanwhile, the probability of pollution caused by contact of the medium segment 10 with other components in the aerosol generating device is reduced.

It should be noted that the medium section 10 and the wrapping layer 40 may be a unitary structure. That is, the media segment 10 and the wrapping 40 are different portions of a unitary structure. In this way, on one hand, the relative positions of the medium section 10 and the wrapping layer 40 are fixed, so that the probability of detachment of the medium section 10 and the wrapping layer 40 due to temperature change, vibration and other factors in the use process of the aerosol-generating product 100 can be reduced, and on the other hand, the medium section 10 and the wrapping layer 40 can be synchronously prepared, so that manufacturing steps are reduced, and production efficiency is improved.

For example, the unitary structure of the dielectric portion and the wrapping layer 40 is formed by a coextrusion process.

Of course, the media segment 10 and the wrapping 40 may be of a split construction.

Embodiments of the present application also provide an aerosol-generating system comprising an aerosol-generating device comprising a heating element (not shown) for heating a media segment 10 to generate an aerosol, and an aerosol-generating article provided by embodiments of the present application.

Specifically, the aerosol-generating device includes a housing and a power supply assembly disposed in the housing, the housing having a housing compartment, an electrical energy output portion of the power supply assembly being disposed in or around a sidewall of the housing compartment, and when the aerosol-generating article 100 is inserted into the housing compartment at a location corresponding to a first direction range in which the media segment 10 is located, the electrical energy output portion transmits electrical energy to a heating assembly in a contact or non-contact manner, and the heating assembly receives energy from the outside to generate heat, thereby heating the media segment 10 and generating aerosol.

In the embodiment of the present application, the first direction does not refer to the direction in which the appearance profile of the medium segment 10 is longest. Specifically, the direction in which the aerosol-generating article 100 is inserted into the receiving compartment, and the direction in which the aerosol-generating article 100 is removed from the receiving compartment, are all parallel to the first direction. The length of the media segment 10 in the first direction may be longer, or shorter, or the same as the length in the other directions.

For example, when the outer contour of the media segment 10 is cylindrical, the first direction is the axial direction of the media segment 10, and it should be noted that, even when the axial length of the media segment 10 is smaller than the diameter thereof, the first direction of the media segment 10 is still the axial direction. For another example, when the exterior profile of the media segment 10 is rectangular, the first direction is still the direction defined above, i.e., the direction in which the cartridge takes out the aerosol-generating article 100, and the first direction of the media segment 10 may be any one of the length, width, and height of the rectangular.

The embodiment of the present application provides an aerosol-generating article, the aerosol-generating article 100 comprising a media segment 10, a functional segment 20 and a filter segment 30 arranged in sequence along a first direction, the media segment 10 generating aerosol when heated, the functional segment 20 mainly serving to support and/or cool down, the filter segment 30 being used to filter the aerosol flowing through the functional segment 20, it being understood that the filter segment also has a function of further cooling down the aerosol as the aerosol flows through the filter segment.

According to the embodiment of the application, the medium section 10 and the functional section 20 of the aerosol-generating product 100 are of an integrated structure, the functional section 20 is of an integrated structure provided with the second air passage hole, for example, the functional section 20 is of an integrated structure formed by adopting inorganic materials such as calcium carbonate, alumina, diatomite, calcined kaolin and the like, high polymer materials such as food grade silica gel, microcrystalline cellulose, konjac gum, starch, plant polysaccharide and the like, polymers such as LDPE (low density polyethylene), PP (polypropylene), TPE (thermoplastic elastomer), PLA (polylactic acid), TPE modified PP, TPE modified PE (polyethylene) and the like, so that the high temperature resistance of the functional section 20 is improved, the structural stability of the functional section 20 is improved, deformation and melting are not easy to occur after heating, the conditions of releasing miscellaneous gases, affecting the absorption resistance and blocking the air passage can be improved to a certain extent, and the use experience of a user is improved. In addition, the surface area of the medium section can be increased through the first air passage holes, heat transfer is facilitated, and heating efficiency is improved.

In addition, compared with the prior art that the medium section 10 and the functional section 20 are manufactured by adopting different processing technologies, the production efficiency of the aerosol-generating product 100 is improved by adopting the same processing technology for the medium section 10 and the functional section 20, and the medium section 10 and the functional section 20 are of separable structures, so that different medium sections 10 and different functional sections 20 can be reasonably matched, different requirements of customers on different pumping resistance and cooling are met, and the use experience of the users is further improved.

The specific composition of the media segment 10 is not limited herein, and in one embodiment, the media segment 10 may include, for example, a plant component, an auxiliary component, a smoke agent component, an adhesive component, a flavor component, and the like.

The plant component is used to generate an aerosol when heated. The adjunct ingredient is used to provide skeletal support for the plant ingredient. The smoke agent component is used to produce smoke when heated. The binder component is used to bind the raw material components. The fragrance component is used to provide a characteristic fragrance. Thus, the plant components and the smoke agent components can ensure the aerosol generation amount, and the spice components can promote the release of aroma in the sucking process, so that the user experience is improved. The auxiliary components not only can improve the fluidity of the mixed materials, but also can enable the medium section 10 to be in a porous structure so as to facilitate the extraction and flow of aerosol. The binder component ensures that the plant component and the auxiliary component and the like form a stable mixture, avoiding loosening of the structure.

Illustratively, the plant component may be one or more of tobacco leaf raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and powder formed by crushing fragrant plants. The plant components are core sources of fragrance, endogenous substances in the plant components can generate physiological satisfaction for users, and endogenous substances such as alkaloids enter human blood to promote the pituitary gland to generate dopamine, so that the physiological satisfaction is obtained.

Illustratively, the adjunct ingredient can be one or a combination of inorganic fillers, lubricants, emulsifiers. Wherein the inorganic filler comprises one or more of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder and diatomite. The inorganic filler can provide framework support for plant components, and at the same time, the inorganic filler also has micropores, so that the porosity of the medium section 10 can be improved, and the aerosol release rate is improved. The lubricant comprises one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the plant component powder, reduce the friction force among the plant component powder, ensure that the overall density of the plant component powder distribution is more uniform, reduce the pressure required in the extrusion molding process and reduce the abrasion of the die. The emulsifier comprises one or more of polyglycerol fatty acid ester, tween-80 and polyvinyl alcohol. The emulsifier can slow down the loss of the fragrant substances in the storage process to a certain extent, increase the stability of the fragrant substances and improve the sensory quality of the product.

Illustratively, the smoke agent component may include one or more combinations of monohydric alcohols (e.g., menthol), polyhydric alcohols (e.g., propylene glycol, glycerol, triethylene glycol, 1, 3-butylene glycol, and tetraethylene glycol), esters of polyhydric alcohols (e.g., glyceryl triacetate, triethyl citrate, glyceryl diacetate mixture, triethyl citrate, benzyl benzoate, tributyrin), monocarboxylic acids, dicarboxylic acids, polycarboxylic acids (e.g., lauric acid, myristic acid), or aliphatic esters of polycarboxylic acids (e.g., dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1, 3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, termitidine (Triactin), meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, lauryl acetate).

Illustratively, the binder component acts to bind the component materials, e.g., powders, liquids, etc., by making intimate contact with the component materials by interfacial wetting, creating intermolecular attractive forces. The binder component may be natural plant extracted, nonionic modified viscous polysaccharide, including one or more of tamarind polysaccharide, guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is used for bonding the particles together, is not easy to loosen, and improves the water resistance of the medium section 10, and is harmless to human bodies.

Illustratively, the fragrance ingredient is used to provide a characteristic fragrance, such as a solid or liquid substance of hay, roasted sweet, nicotine. The flavoring component may include one or more combinations of tobacco or other plants, flavored plant extracts, essential oils, absolute oils, and the flavoring component may include one or more combinations of monomeric flavoring substances, such as megastigmatrienone, neophytadiene, geraniol, nerol, and the like.

Illustratively, in some embodiments, the composition of the functional segment 20 is the same as the composition of the media segment 10.

In other embodiments, the composition of functional segment 20 is different from the composition of media segment 10. Specifically, the functional section 20 of the integrated structure formed by extrusion molding may be any one or a combination of inorganic materials (calcium carbonate, alumina, diatomaceous earth, calcined kaolin, etc.), polymer materials (food-grade silica gel, microcrystalline cellulose, konjac gum, starch, plant polysaccharide, etc.), polymers (LDPE, PP, TPE, PLA, TPE modified PP, TPE modified PE, etc.).

It should be noted that, the functional section 20 has a function of adjusting the resistance to suction, and specifically, the functional section 20 may adjust the resistance to suction by controlling parameters such as the number of the second air passage holes 20a of the functional section 20, the hydraulic diameter of the second air passage holes 20a, and the like.

In order to meet the sensory characteristics of natural and smooth suction, smoke ventilation, comfort and the like of a user in the suction process, and improve the use experience of the user, the suction resistance range of the aerosol-generating article 100 needs to be controlled. The smaller the flow resistance of the aerosol in the aerosol-generating article 100, the smaller the suction resistance experienced by the user, and the larger the flow resistance of the aerosol in the aerosol-generating article 100, the larger the suction resistance experienced by the user.

Illustratively, the aerosol-generating article 100 has a draw resistance ranging from 500Pa to 1100Pa. For example, 500Pa, 550Pa, 600Pa, 650Pa, 700Pa, 750Pa, 800Pa, 850Pa, 900Pa, 950Pa, 1000Pa, 1050Pa, 1100Pa, etc.

When the suction resistance range of the aerosol-generating article 100 is greater than 1100Pa, the greater the flow resistance of the aerosol in the aerosol-generating article 100, the smaller the first air passage holes 10a corresponding to the medium section 10 and the second air passage holes 20a corresponding to the functional sections 20, the difficulty of the forming process will be significantly increased, the sizes of the first air passage holes 10a and the second air passage holes 20a are not easy to control, and the defective product rate of the medium section 10 and the functional sections 20 will be increased.

When the suction resistance range of the aerosol-generating article 100 is less than 500Pa, the number of the first air passage holes 10a corresponding to the medium segment 10 and the number of the second air passage holes 20a corresponding to the functional segment 20 are smaller, the medium segment 10 is prone to a scorching phenomenon, and the medium segment 10 is prone to an uneven aerosol release phenomenon (for example, the first two openings release a large amount, and the second few openings release a small amount of aerosol) in the heating process, so as to affect the suction feeling of the user.

When the suction resistance of the aerosol-generating article 100 is in the range of 500Pa-1100Pa, the flow resistance of the medium segment 10 is relatively small (i.e. the suction resistance is relatively small), and the flow rate of the aerosol is appropriate, the aerosol in the medium segment 10 is easy to extract, the aerosol is released uniformly and has high utilization rate, the medium segment 10 is not easy to generate a scorching phenomenon, the use experience of a user is relatively high, and the processing and the manufacturing are convenient.

Illustratively, in some embodiments, referring to fig. 1-4, the sum of the cross-sectional areas of all of the second airway holes 20a is greater than or equal to the sum of the cross-sectional areas of all of the first airway holes 10a in a plane perpendicular to the first direction of the aerosol-generating article 100. That is, the void fraction of the functional segment 20 is greater than or equal to the void fraction of the media segment 10, that is, the suction resistance of the functional segment 20 is less than or equal to the suction resistance of the media segment 10. In this way, the residence time of the aerosol flowing through the functional section 20 and the contact area of the aerosol and the functional section 20 can be increased, thereby improving the cooling effect.

Illustratively, in some embodiments, referring to fig. 1-4, the cross-sectional area of the single second airway aperture 20a is greater than or equal to the cross-sectional area of the single first airway aperture 10a in a plane perpendicular to the first direction of the aerosol-generating article 100. That is, the hydraulic diameter of the single second air passage hole 20a is greater than or equal to the hydraulic diameter of the single first air passage hole 10 a.

In the present examples, hydraulic diameter refers to the ratio of four times the area of the flow cross section to the perimeter.

It will be appreciated that when aerosol flows from the first air passage aperture 10a of the media segment 10 to the second air passage aperture 20a of the functional segment 20, the air passage is enlarged, increasing the residence time of the aerosol, while the functional segment 20 is no longer heated, thereby achieving the effect of reducing the aerosol temperature. In addition, since the hydraulic diameter of the single second air passage hole 20a is greater than or equal to the hydraulic diameter of the single first air passage hole 10a, the flow resistance of the aerosol is reduced when the aerosol flows from the first air passage hole 10a to the second air passage hole 20a, facilitating extraction of the aerosol. Furthermore, the functional section 20 further has micropores, and when the aerosol flows through the functional section 20, part of the aerosol can flow through the micropores, so that the residence time of the aerosol is further increased, and the temperature reduction of the aerosol is further facilitated.

It will be appreciated that a smaller number of second airway holes 20a with a larger hydraulic diameter may be more conducive to aerosol cool down. In a plane perpendicular to the first direction of the aerosol-generating article 100, the number of second air passage holes 20a should be smaller than the number of first air passage holes 10a when the hydraulic diameter of the individual second air passage holes 20a is larger than the hydraulic diameter of the individual first air passage holes 10a, due to the functional section 20 conforming to the cross section of the media section 10. Illustratively, the number of second airway holes 20a is less than or equal to the number of first airway holes 10 a.

Illustratively, in other embodiments, referring to fig. 5, the sum of the cross-sectional areas of all of the second airway holes 20a is less than the sum of the cross-sectional areas of all of the first airway holes 10a in a plane perpendicular to the first direction of the aerosol-generating article 100. I.e. the porosity of the functional segment 20 is smaller than the porosity of the media segment 10, i.e. the suction resistance of the functional segment 20 is greater than the suction resistance of the media segment 10. In this way, when the aerosol flows from the medium section 10 to the functional section 20, the suction resistance of the aerosol-generating product 100 can be increased, the aerosol in the medium section 10 can be easily extracted, the aerosol is released uniformly and the utilization rate is high, the medium section 10 is not easy to generate a scorching phenomenon, and simultaneously, the sensory characteristics of natural and smooth suction, smoke ventilation, comfort and the like of a user in the suction process are satisfied.

Illustratively, in other embodiments, referring to fig. 5, the cross-sectional area of the single second airway aperture 20a is smaller than the cross-sectional area of the single first airway aperture 10a in a plane perpendicular to the first direction of the aerosol-generating article 100. That is, the hydraulic diameter of the single second air passage hole 20a is smaller than that of the single first air passage hole 10a.

It will be appreciated that as the aerosol flows from the first airway aperture 10a of the media segment 10 to the second airway aperture 20a of the functional segment 20, the airflow path becomes smaller, i.e. the resistance to draw of the functional segment 20 is greater than that of the media segment 10, thereby facilitating an increase in resistance to draw of the aerosol-generating article 100. Furthermore, the functional segment 20 further has micropores, and when the aerosol flows through the functional segment 20, a part of the aerosol can flow through the micropores, so that the flow resistance of the aerosol is further increased, thereby further facilitating the increase of the suction resistance of the aerosol-generating article 100.

It will be appreciated that a larger number of second airway holes 20a with a smaller hydraulic diameter may be more advantageous for increasing the resistance to draw of the functional segment 20 and the aerosol-generating article 100. In a plane perpendicular to the first direction of the aerosol-generating article 100, the number of second air passage holes 20a should be greater than the number of first air passage holes 10a, as the functional section 20 coincides with the cross section of the media section 10, while the hydraulic diameter of the second air passage holes 20a is smaller than the hydraulic diameter of the first air passage holes 10 a. Illustratively, in other embodiments, the number of second airway holes 20a is greater than the number of first airway holes 10 a.

It should be noted that the shape of the second air passage hole 20a is not limited herein, and illustratively, in a plane perpendicular to the first direction of the aerosol-generating article 100, the cross-sectional shape of the second air passage hole 20a is at least one of a circle (as shown in fig. 12 and 13), an ellipse, a racetrack, a polygon, and a fan, wherein the polygon includes a regular or irregular polygon (the rectangular shape is an irregular polygon as shown in fig. 16).

The runway-shaped track is similar to a track and field runway, and is formed by alternately connecting two semicircles and two parallel straight edges.

Referring to fig. 6-15, for example, at least one cavity 100a is provided within the aerosol-generating article 100. It should be noted that the number of the cavities 100a is not limited herein, that is, the number of the cavities 100a may be one or more.

It should be noted that the specific location and the forming manner of the cavity 100a are not limited herein, and may be formed between any two of the media segment 10, the functional segment 20 and the filter segment 30, or may be formed at an end of the media segment 10 away from the functional segment 20, or may be formed at an end of the filter segment 30 away from the functional segment 20.

By arranging the combined structure of the cavities 100a at different positions, the flow path of aerosol can be increased, the airflow channel is increased, and by utilizing the technical principles of heat exchange and the like, the combined structure of the cavities 100a can achieve beneficial effects in the aspects of aerosol formation promotion, buffering, cooling and the like as required.

Illustratively, in some embodiments, referring to fig. 6 and 11, the media segment 10 and the functional segment 20 are spaced apart to define a cavity 100a. That is, the medium segment 10 and the functional segment 20 are disposed at a distance from each other, and the medium segment 10 and the functional segment 20 are surrounded by the wrapping layer 40 on the peripheral sides thereof to form a cavity 100a. It can be appreciated that by forming the cavity 100a between the medium segment 10 and the functional segment 20, the aerosol generated by heating the medium segment 10 can flow into the cavity 100a, and the aerosol generated by the medium segment 10 can be buffered by the arrangement of the cavity 100a, so that extraction of the aerosol can be facilitated, and the utilization rate of the medium segment 10 can be improved. In addition, the provision of the cavity 100a can increase the contact area of the air flow exiting the media segment 10 with the aerosol-generating article 100, thereby providing a better cooling effect.

Illustratively, in some embodiments, referring to fig. 7 and 12, the functional segment 20 and the filter segment 30 are spaced apart to define a cavity 100a. That is, the functional segment 20 and the filter segment 30 are disposed at a distance from each other, and the functional segment 20 and the wrapping layer 40 wrapping the peripheral side of the functional segment 20 define a cavity 100a. It can be appreciated that by forming the cavity 100a between the functional section 20 and the filtering section 30, the aerosol generated by heating the medium section 10 can flow to the functional section 20 and then flow to the cavity 100a for buffering, so that during the conveying process of the aerosol, the flow path of the aerosol is increased, thereby having a rapid cooling effect, and meanwhile, the aerosol generated by the medium section 10 can be buffered by the arrangement of the cavity 100a.

It should be noted that, in other embodiments, referring to fig. 8 and 13, a cavity 100a is disposed between the medium section 10 and the functional section 20, and between the functional section 20 and the filtering section 30. The cavity 100a provided in this embodiment has aerosol buffering and cooling functions and facilitates rapid extraction of aerosols. On the premise of guaranteeing the aerosol caching function preferentially, cavities 100a are arranged between the medium section 10 and the functional section 20 and between the functional section 20 and the functional section 20, namely, the extraction rate and the caching function of the aerosol are further improved through the alternately combined cavity 100a structure.

Illustratively, in some embodiments, referring to fig. 10 and 15, at least an end of the media segment 10 distal from the functional segment 20 is provided with a cavity 100a. That is, at least the distal lip end of the medium segment 10 is provided with a cavity 100a, and the cavity 100a can store air, so that the contact area between the medium segment 10 and the air is increased, natural diffusion of aerosol formed by heating the medium segment 10 is facilitated, and extraction of the aerosol is facilitated.

The distal lip end of the media segment 10 refers to the end of the media segment 10 that is remote from the user when the aerosol-generating article 100 is in use by the user.

Illustratively, in some embodiments, referring to fig. 9 and 14, at least an end of the filter segment 30 distal from the functional segment 20 is provided with a cavity 100a. Namely, at least the near lip end of the filter segment 30 is provided with a cavity 100a, the area of the cavity 100a at the near lip end of the filter segment 30 is increased, and the heat conduction efficiency is reduced, so that after aerosol flows out from the lip inlet end of the filter segment 30, the aerosol can be quickly contacted with air, namely, the heat conduction efficiency of the air is relatively low, the aerosol can realize quick heat exchange and cooling when meeting external cold air, the problem of 'burning' of smoke is solved, and the aerosol extraction and cooling functions are facilitated.

For example, referring to fig. 7 and 8, a central air passage 20b is provided in the functional section 20, the central air passage 20b penetrates through two ends of the functional section 20 along the first direction, the number of the second air passage holes 20a is plural, and each second air passage hole 20a is disposed at intervals on a peripheral side of the central air passage 20 b. That is, both central air passage 20b and second air passage aperture 20a extend in a first direction, and aerosol generated by media segment 10 is able to flow through central air passage 20b and second air passage aperture 20a for cooling.

The cross-sectional area of the central air passage 20b is larger than the cross-sectional area of the second air passage aperture 20a in a plane perpendicular to the first direction of the aerosol-generating article 100. That is, the central air passage 20b is disposed at the center of the functional section 20, the aperture of the central air passage 20b is larger, the aperture of the second air passage hole 20a at the periphery is smaller, and the aerosol is collected towards the center to be pumped, so that the aerosol agglomerating property is better.

Illustratively, the number of the second air passage holes 20a is plural, and each second air passage hole 20a is formed in the functional section 20 in a uniformly distributed manner. That is, the aperture sizes of the second air passage holes 20a are consistent, and the uniform distribution of the second air passage holes 20a is beneficial to the smoothness, uniformity and cooling efficiency of aerosol flow, so as to promote the suction feeling of the user.

It should be noted that the second air passage holes 20a are in a "uniformly distributed" form, including that each second air passage hole 20a is in a matrix or concentric distribution, and when in a concentric distribution, the space between the rings is equal, that is, each second air passage hole 20a is in a uniform arrangement. It will be appreciated that each second air passage aperture 20a may not be uniform in cross-section of the functional segment 20, that is, each second air passage aperture 20a is uniformly distributed, but each second air passage aperture 20a does not uniformly divide the entire functional segment 20. For example, in the case of the functional segment 20 having a circular cross section, the individual second air passage holes 20a distributed in a matrix are not uniformly distributed in the circular cross section.

Of course, in other embodiments, each second air passage hole 20a is formed in the functional section 20 in a non-uniformly distributed manner. For example, the pore sizes of the second air passage holes 20a are different, the pore size ranges show a variation trend according to a certain direction, and the pore sizes are distributed like circular rings, and the intervals between the circular rings can be equal or unequal.

Illustratively, the media segment 10, the functional segment 20, and the filter segment 30 are cylinders having uniform outer diameters and coaxially disposed, and the first direction is the axial direction of the media segment 10, the functional segment 20, and the filter segment 30. Through all setting up medium section 10, function section 20 and filter segment 30 to the cylinder that the external diameter is unanimous, and arrange in proper order along the axial of medium section 10, function section 20 and filter segment 30, can make aerosol generating article 100's structure compacter, improved user's use experience and felt.

Nine specific embodiments are briefly described below with reference to the drawings.

First embodiment

Referring to fig. 1 to 2, in this embodiment, the aerosol-generating article 100 includes a medium section 10, a functional section 20 and a filter section 30 sequentially arranged along a first direction, and the medium section 10, the functional section 20 and the filter section 30 are in separable structures, i.e. the aerosol-generating article 100 is a three-stage combined structure formed by sequentially combining the medium section 10, the functional section 20 and the functional section 20. The two ends of the functional section 20 are in contact with the media section 10 and the filter section 30, respectively.

The media segment 10 and the functional segment 20 are both extruded as a unitary structure. The media segment 10 and the functional segment 20 are manufactured by the same processing technology, thereby improving the production efficiency of the aerosol-generating article 100.

The function section 20 is the integral type structure of extruding formation, has improved the high temperature resistance of function section 20 to improved the structural stability of function section 20, be difficult for taking place to warp and melt after being heated, can improve release miscellaneous gas to a certain extent, influence and inhale the condition that hinders, block the air flue, thereby improved user's use experience and felt.

The filtering section 30 is of a hollow acetate fiber structure or a solid acetate fiber structure so as to filter and cool the aerosol.

Referring to fig. 1 and 2, at least one first air passage hole 10a is formed in the medium section 10, the first air passage hole 10a penetrates through at least one end of the medium section 10 along the first direction, at least one second air passage hole 20a is formed in the functional section 20, and the second air passage hole 20a penetrates through at least one end of the functional section 20 along the first direction. The arrangement of the first and second air passage holes 10a and 20a can function to adjust the suction resistance.

The sum of the cross-sectional areas of all the second air passage holes 20a is larger than or equal to the sum of the cross-sectional areas of all the first air passage holes 10a in a plane perpendicular to the first direction of the aerosol-generating article 100 to achieve that the suction resistance of the functional section 20 is smaller than or equal to the suction resistance of the media section 10, the hydraulic diameter of the single second air passage hole 20a is larger than or equal to the hydraulic diameter of the single first air passage hole 10a, and the number of second air passage holes 20a is smaller than or equal to the number of first air passage holes 10 a. The second air passage holes 20a with small number and large hydraulic diameter are more beneficial to the temperature reduction of the aerosol. In a plane perpendicular to the first direction of the aerosol-generating article 100, since the functional segment 20 coincides with the cross-section of the media segment 10, and the hydraulic diameter of the second air passage holes 20a is larger than the hydraulic diameter of the first air passage holes 10a, the number of second air passage holes 20a should be smaller than the number of first air passage holes 10a, thereby further facilitating the cooling of the aerosol.

The suction resistance of the functional section 20 is less than or equal to the suction resistance of the media section 10, whereby the main function of the functional section 20 is to support and cool down.

Each of the second air passage holes 20a is formed in the functional section 20 in a non-uniformly distributed manner. Specifically, the functional section 20 is provided with a central air passage 20b inside, the central air passage 20b penetrates through two ends of the functional section 20 along the first direction, the number of the second air passage holes 20a is plural, and each second air passage hole 20a is arranged at intervals on the peripheral side of the central air passage 20 b. That is, the central air passage 20b is disposed at the center of the functional section 20, the aperture of the central air passage 20b is larger, and the aperture of the second air passage hole 20a disposed at the outer periphery of the central air passage 20b is smaller, which is advantageous in that aerosol is gathered toward the center to be sucked, and aerosol agglomerating property is better.

The medium section 10 has micropores therein, which are at least partially communicated with each other and with the first gas passage holes 10 a. When the medium section 10 is heated, external air flow such as air can enter the medium section 10 through the first air passage hole 10a to diffuse, aerosol generated by a medium (namely, a part of the medium section 10 exposed to the first air passage hole 10 a) surrounded by the first air passage hole 10a of the medium section 10 directly enters the first air passage hole 10a, and aerosol generated by other parts (namely, a part of the medium section not exposed to the first air passage hole 10 a) of the medium section 10 can be collected into the first air passage hole 10a through micropores. Thus, during the suction process, the aerosol collected in the first air passage hole 10a flows into the central air passage 20b and the second air passage hole 20a of the functional section 2, and finally enters the oral cavity of the user after being filtered by the filtering section 30.

Second embodiment

Referring to fig. 3, the aerosol-generating article 100 according to the present embodiment has a structure substantially identical to that of the first embodiment, except that in the present embodiment, the functional section 20 is not provided with a central air passage 20b therein, and each of the second air passage holes 20a is formed in the functional section 20 in a uniformly distributed manner. That is, the aperture sizes of the second air passage holes 20a are consistent, and the uniform distribution of the second air passage holes 20a is beneficial to the smoothness, uniformity and cooling efficiency of aerosol flow, so as to promote the suction feeling of the user.

Third embodiment

Referring to fig. 4 and 16, the aerosol-generating article 100 of this embodiment is generally identical in structure to the second embodiment, except that the cross-sectional shape of the second airway aperture 20a of the functional segment 20 is elongate in this embodiment.

The second air passage hole 20a with the cross-sectional shape and the distribution thereof are beneficial to the flow of aerosol, the dislocation of the second air passage hole 20a of the functional section 20 and the first air passage hole 10a of the medium section 10 can be reduced to a certain extent, so that the situation that the flow of aerosol is blocked is improved, and meanwhile, the second air passage hole 20a with the cross-sectional shape is easy to adjust the suction resistance, for example, the suction resistance can be increased by reducing the short side length of the second air passage hole 20a, and the suction resistance can be reduced by increasing the short side length of the second air passage hole 20 a.

Fourth embodiment

Referring to fig. 5, the aerosol-generating article 100 of this embodiment is generally identical in structure to the second embodiment, except that in this embodiment, the sum of the cross-sectional areas of all the second air passage holes 20a is smaller than the sum of the cross-sectional areas of all the first air passage holes 10a in a plane perpendicular to the first direction of the aerosol-generating article 100.

I.e. the porosity of the functional segment 20 is smaller than the porosity of the media segment 10, i.e. the suction resistance of the functional segment 20 is greater than the suction resistance of the media segment 10. In this way, when the aerosol flows from the medium section 10 to the functional section 20, the suction resistance of the aerosol-generating product 100 can be increased, the aerosol in the medium section 10 can be easily extracted, the aerosol is released uniformly and the utilization rate is high, the medium section 10 is not easy to generate a scorching phenomenon, and simultaneously, the sensory characteristics of natural and smooth suction, smoke ventilation, comfort and the like of a user in the suction process are satisfied.

The cross-sectional area of the second airway aperture 20a is smaller than the cross-sectional area of the first airway aperture 10a in a plane perpendicular to the first direction of the aerosol-generating article 100. That is, the hydraulic diameter of the second air passage hole 20a is smaller than the hydraulic diameter of the first air passage hole 10 a.

The suction resistance of the functional section 20 is less than or equal to the suction resistance of the media section 10, whereby the main function of the functional section 20 is to support and adjust the suction resistance.

Fifth embodiment

Referring to fig. 6 and 11, in this embodiment, the aerosol-generating article 100 includes a medium section 10, a functional section 20, and a filter section 30 sequentially arranged along a first direction, and the medium section 10, the functional section 20, and the filter section 30 are in a separable structure, i.e., the aerosol-generating article 100 is in a three-stage combined structure formed by sequentially combining the medium section 10, the functional section 20, and the functional section 20.

Referring to fig. 6 and 11, at least one first air passage hole 10a is formed in the medium section 10, the first air passage hole 10a penetrates through at least one end of the medium section 10 along the first direction, at least one second air passage hole 20a is formed in the functional section 20, and the second air passage hole 20a penetrates through at least one end of the functional section 20 along the first direction. The arrangement of the first and second air passage holes 10a and 20a can function to adjust the suction resistance.

In this embodiment, referring to fig. 6 and 11, the media segment 10 and the functional segment 20 are spaced apart to define a cavity 100a.

That is, the media segment 10 and the functional segment 20 are spaced apart to define a cavity 100a. That is, the medium segment 10 and the functional segment 20 are disposed at a distance from each other, and the medium segment 10 and the functional segment 20 are surrounded by the wrapping layer 40 on the peripheral sides thereof to form a cavity 100a. It can be appreciated that by forming the cavity 100a between the medium segment 10 and the functional segment 20, the aerosol generated by heating the medium segment 10 can flow into the cavity 100a, and the aerosol generated by the medium segment 10 can be buffered by the arrangement of the cavity 100a, so that extraction of the aerosol can be facilitated, and the utilization rate of the medium segment 10 can be improved. In addition, the provision of the cavity 100a can increase the contact area of the air flow exiting the media segment 10 with the aerosol-generating article 100, thereby providing a better cooling effect.

Sixth embodiment

Referring to fig. 7 and 12, the aerosol-generating article 100 of this embodiment is generally identical in construction to the fifth embodiment, except that in this embodiment, a cavity 100a is provided between the functional section 20 and the filter section 30.

That is, the functional segment 20 and the filter segment 30 are disposed at a distance from each other, and the functional segment 20 and the wrapping layer 40 wrapping the peripheral side of the functional segment 20 define a cavity 100a. It can be appreciated that by forming the cavity 100a between the functional section 20 and the filtering section 30, the aerosol generated by heating the medium section 10 can flow to the functional section 20 and then flow to the cavity 100a for buffering, so that during the conveying process of the aerosol, the flow path of the aerosol is increased, thereby having a rapid cooling effect, and meanwhile, the aerosol generated by the medium section 10 can be buffered by the arrangement of the cavity 100a.

Seventh embodiment

Referring to fig. 8 and 13, the aerosol-generating article 100 of this embodiment is generally identical in construction to the fifth embodiment, except that in this embodiment, a cavity 100a is provided between the media segment 10 and the functional segment 20, and between the functional segment 20 and the filter segment 30.

The cavity 100a provided in this embodiment has aerosol buffering and cooling functions and facilitates rapid extraction of aerosols. On the premise of guaranteeing the aerosol caching function preferentially, cavities 100a are arranged between the medium section 10 and the functional section 20 and between the functional section 20 and the functional section 20, namely, the extraction rate and the caching function of the aerosol are further improved through the alternately combined cavity 100a structure.

Eighth embodiment

Referring to fig. 10 and 15, the aerosol-generating article 100 of this embodiment is generally identical in construction to the fifth embodiment, except that in this embodiment, the cavity 100a is disposed at the end of the media segment 10 remote from the functional segment 20.

In this embodiment, the cavity 100a is disposed at the end of the medium segment 10 away from the functional segment 20, so as to increase the contact area between the medium segment 10 and air, which is beneficial to natural diffusion of the aerosol formed by heating the medium segment 10 and extraction of the aerosol.

Ninth embodiment

Referring to fig. 9 and 14, the aerosol-generating article 100 of this embodiment is generally identical in construction to the fifth embodiment, except that in this embodiment, the cavity 100a is disposed at the end of the filter segment 30 remote from the functional segment 20.

In this embodiment, by arranging the cavity 100a at the end of the functional section 20 far away from the functional section 20, the area of the cavity 100a near the lip end of the filtering section 30 is increased, and the heat conduction efficiency is reduced, so that the aerosol can quickly contact with air after flowing out from the lip inlet end of the filtering section 30, that is, the heat conduction efficiency of the air is relatively low, the aerosol can quickly exchange heat and cool when meeting external cold air, the problem of 'burning' of smoke is solved, and the aerosol extraction and cooling functions are facilitated.

In the description of the present application, reference to the term "one embodiment," "in some embodiments," "in other embodiments," "in yet other embodiments," or "exemplary" etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In the present application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described in the present application and the features of the various embodiments or examples may be combined by those skilled in the art without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. 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

1. An aerosol-generating article comprising a media segment, a functional segment, and a filter segment arranged in sequence along a first direction, the media segment and the functional segment each being of unitary construction;

2. An aerosol-generating article according to claim 1, wherein the media segment, the functional segment and the filter segment are separable structures.

3. An aerosol-generating article according to claim 1, wherein the sum of the cross-sectional areas of all the second airway holes is greater than or equal to the sum of the cross-sectional areas of all the first airway holes in a plane perpendicular to the first direction of the aerosol-generating article.

4. An aerosol-generating article according to claim 3, wherein the cross-sectional area of a single second airway aperture is greater than or equal to the cross-sectional area of a single first airway aperture, or the hydraulic diameter of a single second airway aperture is greater than or equal to the hydraulic diameter of a single first airway aperture, in a plane perpendicular to the first direction of the aerosol-generating article.

5. An aerosol-generating article according to claim 3, wherein the number of second airway holes is less than or equal to the number of first airway holes.

6. An aerosol-generating article according to claim 1, wherein the sum of the cross-sectional areas of all the second airway holes is less than the sum of the cross-sectional areas of all the first airway holes in a plane perpendicular to the first direction of the aerosol-generating article.

7. An aerosol-generating article according to claim 6, wherein the cross-sectional area of a single second airway orifice is smaller than the cross-sectional area of a single first airway orifice, or the hydraulic diameter of a single second airway orifice is smaller than the hydraulic diameter of a single first airway orifice, in a plane perpendicular to the first direction of the aerosol-generating article.

8. An aerosol-generating article according to claim 6, wherein the number of second airway holes is greater than the number of first airway holes.

9. An aerosol-generating article according to claim 1, wherein the cross-sectional shape of the second airway aperture is at least one of circular, elliptical, racetrack, polygonal and fan-shaped in a plane perpendicular to the first direction of the aerosol-generating article.

10. An aerosol-generating article according to claim 1, wherein the interior of the aerosol-generating article is provided with at least one cavity, and/or wherein the functional section is a support section or a cooling section.

11. An aerosol-generating article according to claim 10, wherein the media segment and the functional segment are spaced apart to define the cavity, and/or wherein the filter segment and the functional segment are spaced apart to define the cavity.

12. An aerosol-generating article according to claim 10, wherein the medium section is provided with the cavity at least at an end remote from the functional section, and/or the filter section is provided with the cavity at least at an end remote from the functional section.

13. An aerosol-generating article according to claim 1, wherein the functional segments are in contact with the media segment and the filter segment at both ends, respectively.

14. An aerosol-generating article according to claim 1, wherein the functional segment is internally provided with a central air passage extending through both ends of the functional segment in a first direction, the number of second air passage holes being plural, each of the second air passage holes being arranged at intervals on a peripheral side of the central air passage, and wherein the cross-sectional area of the central air passage is larger than the cross-sectional area of the second air passage holes on a plane perpendicular to the first direction of the aerosol-generating article.

15. An aerosol-generating article according to claim 1, wherein the number of second airway holes is plural, each second airway hole being formed in the functional segment in a uniformly distributed fashion.

16. An aerosol-generating article according to claim 1, wherein the media segment, the functional segment and the filter segment are cylinders of uniform outer diameter and coaxially arranged, and the first direction is axial of the media segment, the functional segment and the filter segment.

17. The aerosol-generating article according to claim 1, wherein the filter segment is of hollow acetate fiber structure or solid acetate fiber structure.

18. An aerosol-generating system, characterized in that the aerosol-generating system comprises an aerosol-generating device and the aerosol-generating article according to any of claims 1 to 17, the aerosol-generating device comprising a heating element for heating the medium section to generate an aerosol.