AEROSOL GENERATING ARTICLE AND AEROSOL GENERATING SYSTEM

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a continuation application of International Patent Application No. PCT/CN2024/101081, filed on Jun. 24, 2024, which claims priority to Chinese Patent Application No. 202310931830.5, filed on Jul. 26, 2023. The disclosures of the above-referenced applications are hereby incorporated by reference in their entirety.

BACKGROUND

This section is intended to provide background or context for embodiments of the present disclosure set forth in the claims. The description in this section is not admitted to be the prior art because it is included in this section.

Smoking articles include smoking articles which form an aerosol by ignition, and smoking articles which form an aerosol by heating without combustion. In a typical smoking article by heating without combustion, it includes an aerosol generating substrate that can volatilize upon heating to generate an aerosol, and a functional section that cooperates with the aerosol generating substrate to achieve inhalation of the aerosol. The aerosol generating substrate is heated by an external heat source so that the aerosol generating substrate is heated just enough to emit a flavor, and the aerosol generating substrate will not burn but is loaded with an aerosol forming agent. In use, the aerosol forming agent is released by heating through a high temperature to form a smoke.

The inhalation resistance of the smoking articles during the inhalation is an important index for the smoking articles. In the related art, the smoking articles may have a low content of the inhaled aerosol due to too small or too large inhalation resistance, which reduces the user experience.

SUMMARY

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

In view of this, it is desirable to provide an aerosol generating article and an aerosol generating system.

In order to achieve the above object, an embodiment of the present disclosure provides an aerosol generating article, including a substrate section, a first functional section, a second functional section, and a third functional section which are sequentially arranged in a first direction.

One of the second functional section and the third functional section is a cooling section.

The substrate section is an integrated structure, at least one first airflow channel is arranged inside the substrate section, and the first airflow channel passes through at least one end of the substrate section in the first direction.

Inhalation resistance of the first functional section is different from inhalation resistance of the substrate section.

An embodiment of the present disclosure also provides an aerosol generating system including an aerosol generating device and an aerosol generating article. The aerosol generating article includes a substrate section, a first functional section, a second functional section, and a third functional section which are sequentially arranged in a first direction. One of the second functional section and the third functional section is a cooling section. The substrate section is an integrated structure, at least one first airflow channel is arranged inside the substrate section, and the first airflow channel passes through at least one end of the substrate section in the first direction. Inhalation resistance of the first functional section is different from inhalation resistance of the substrate section. The aerosol generating device includes a heating member configured to heat the substrate section to generate an aerosol.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an aerosol generating article according to an embodiment of the present disclosure.

FIG. 2 is a cross-sectional view of the aerosol generating article shown in FIG. 1, in which dashed arrows indicate a direction of flow of 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 present disclosure.

FIG. 4 is a schematic cross-sectional view of an aerosol generating article according to a third embodiment of the present disclosure.

FIG. 5 is a schematic cross-sectional view of an aerosol generating article according to a fourth embodiment of the present disclosure.

FIG. 6 is a schematic cross-sectional view of an aerosol generating article according to a fifth embodiment of the present disclosure.

FIG. 7 is a schematic cross-sectional view of an aerosol generating article according to a sixth embodiment of the present disclosure.

FIG. 8 is a schematic cross-sectional view of an aerosol generating article according to a seventh embodiment of the present disclosure.

FIG. 9 is a schematic cross-sectional view of an aerosol generating article according to an eighth embodiment of the present disclosure.

FIG. 10 is a schematic cross-sectional view of an aerosol generating article according to a ninth embodiment of the present disclosure.

FIG. 11 is a schematic cross-sectional view of an aerosol generating article according to a tenth embodiment of the present disclosure.

FIG. 12 is a schematic diagram of a first functional section shown in FIG. 3.

FIG. 13 is a schematic diagram of a first functional section shown in FIG. 4.

FIG. 14 is a schematic diagram of a first functional section shown in FIG. 9.

DETAILED DESCRIPTION

It should be noted that embodiments and features in the embodiments of the present disclosure may be combined with each other without conflict, and the detailed description should be understood as an explanation of the present disclosure and should not be regarded as an undue limitation of the present disclosure.

In the description of the present disclosure, orientation or positional relationships indicated by the term “first direction” are based on orientation or positional relationships shown in FIG. 1 and FIG. 2 and are merely for convenience of describing the present disclosure and simplification of the description, and do not indicate or imply that the referred device or element must have a particular orientation and must be constructed and operated in a particular orientation, and therefore cannot be construed as a limitation of the embodiments of the present disclosure.

An embodiment of the present disclosure provides an aerosol generating article. Referring to FIG. 1 to FIG. 14, the aerosol generating article includes a substrate section 10, a first functional section 20, a second functional section 30, and a third functional section 40 which are sequentially arranged in a first direction.

One of the second functional section 30 and the third functional section 40 is a cooling section configured to reduce a temperature of an aerosol.

Another one of the second functional section 30 and the third functional section 40 may have a function of supporting and/or filtering and/or reducing the temperature. The inhalation resistance of the first functional section 20 is different from the inhalation resistance of the substrate section 10. In this way, the inhalation resistance of the aerosol generating article 100 can be maintained in an appropriate range by controlling the inhalation resistance of the first functional section 20.

Specifically, referring to FIG. 3 and FIG. 4, one of two ends of the second functional section 30 in the first direction is in contact with the first functional section 20, and another one of the two ends of the second functional section 30 in the first direction is in contact with the third functional section 40. At this time, the second functional section 30 can support the first functional section 20 and the third functional section 40, to increase the overall strength of the aerosol generating article. Furthermore, the second functional section 30 can also be solid acetate cellulose or solid PET, and can directionally filter the aerosol to remove harmful components therein, and can also adjust the inhalation resistance to better prevent the aerosol generating article from causing inhalation voids due to too small inhalation resistance and thus affecting the inhalation experience. In addition, the aerosol generated by the substrate section 10 passes through the second functional section 30 with a certain length, which may reduce the temperature of the aerosol. That is, in this embodiment, the second functional section 30 has the functions of supporting, reducing the temperature and adjusting the inhalation resistance simultaneously.

Referring to FIG. 2, the second functional section 30 is spaced apart from the first functional section 20, and at this time, the main function of the second functional section 30 is to reduce the temperature and adjust the inhalation resistance. It can be understood that in other embodiments, the second functional section 30 may also be configured to perform supporting and adjust the inhalation resistance, or the second functional section 30 may also be configured to perform filtering and adjust the inhalation resistance, which is not limited in the present disclosure.

It should be noted that when one of the second functional section 30 and the third functional section 40 is configured to filter the aerosol, since the aerosol flows through this functional section, this functional section also has a function of further reducing the temperature of the aerosol.

The aerosol generating article 100 generates an aerosol through the substrate section 10, and the first functional section 20, the second functional section 30, and the third functional section 40 are not configured to generate an aerosol.

It should be noted that the aerosol generating article 100 according to the embodiment of the present disclosure may be adapted to be inhaled by ignition, or may also be adapted to be inhaled by heating without combustion. In the embodiment of the present disclosure, an example in which the aerosol generating article 100 is adapted to be inhaled by heating without combustion is described.

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

The substrate section 10 is configured to generate an aerosol for inhalation by a user when it is heated.

In the embodiment of the present disclosure, the substrate section 10 is substantially columnar shape. The columnar shape may be a cylindrical shape (i.e., a circular cross-sectional shape), a prismatic shape (i.e., a polygonal cross-sectional shape), an elliptical cylindrical shape (i.e., an elliptical cross-sectional shape), or the like, and is not limited herein.

In an example, the substrate section 10, the first functional section 20, the second functional section 30 and the third functional section 40 are separable structures, and are not connected together by mechanical structures, physical structures or adhesives, but two of them may be in contact with each other. That is, the substrate section 10, the first functional section 20, the second functional section 30 and the third functional section 40 are combined structures. In this way, different substrate sections 10, different first functional sections 20, different second functional sections 30 and different third functional sections 40 can be reasonably combined to meet different inhalation needs of customers.

In an example, the substrate section 10 is a particle combination, also referred to as a powder combination, which is a reconstituted tobacco substrate, for example, a reconstituted tobacco substrate containing ingredients such as smoking agents, tobacco, and the like. The substrate section 10 is an integrated structure, and can be formed as an integrated structure, for example, by an extrusion molding, injection molding, or die-casting molding. The extrusion molding refers to a processing method in which a raw material mixture is added into an extruder, is pushed forward by a screw through an action between a barrel and the screw of the extruder, and continuously passes through a die arranged at a discharge port of the extruder, to produce various cross-sectional articles or semi-finished articles. The substrate structure formed by the extrusion molding is in the shape of a strip. In this way, the substrate section 10 is an integrated substrate after it is heated and inhaled or heating is stopped, and the phenomenon of disintegration and falling is not easy to occur, thus solving the problems such as flake loosening, filamentous components and particle components falling off, difficulty in cleaning, and uneven components in the flaky, filamentous or loose particle substrate section 10 in the related art.

At least one first airflow channel 10a is arranged inside the substrate section 10, and referring to FIG. 2 to FIG. 11, the first airflow channel 10a passes through at least one end of the substrate section 10 in the first direction.

The fact that at least one first airflow channel 10a is arranged inside the substrate section 10 means that one first airflow channel 10a may be arranged inside the substrate section 10, or a plurality of first airflow channels 10a may be arranged inside the substrate section 10.

In the embodiments of the present disclosure, the plurality means that the number is two or more.

In some embodiments, the first airflow channels 10a pass through the same end of the substrate section 10 in the first direction, and another end thereof is closed.

In some embodiments, some of the first airflow channels 10a pass through an end of the substrate section 10 in the first direction, and some others of the first airflow channels 10a pass through another end of the substrate section 10 in the first direction.

In still other embodiments, referring to FIG. 2 to FIG. 11, each of the first airflow channels 10a passes through two ends of the substrate section 10 in the first direction. That is, the first airflow channels 10a extend in the first direction of the substrate section 10, and airflow may flow from one end of the substrate section 10 to another end of the substrate section 10 through the first airflow channels 10a. Preferably, the first airflow channel 10a is parallel to a central axis of the substrate section 10.

A wall of the first airflow channel 10a constitutes an inner surface of the substrate section 10, and the first airflow channel 10a can increase the inner surface area of substrate section 10, which may facilitate the heat transfer, and improve the heating efficiency. In addition, the substrate section 10 generates an aerosol by heating, and the aerosol is collected in the first airflow channel 10a and delivered to an inhalation end under the action of an inhalation negative pressure. The first airflow channel 10a can reduce the inhalation resistance for the user and improve the user experience. It should be noted that the inhalation resistance is positively correlated with the flow resistance of the aerosol. The smaller the flow resistance of the aerosol in the substrate section 10, the smaller the inhalation resistance experienced by the user, and the larger the flow resistance of the aerosol in the substrate section 10, the larger the inhalation resistance experienced by the user.

It should be noted that the shape of the first airflow channel 10a is not limited herein. In an example, the shape of the cross section of the first airflow channel 10a in a plane perpendicular to the first direction of the substrate section 10 includes, but is not limited to, a circular shape (as shown in FIG. 2 to FIG. 11), an elliptical shape, a track shape, or a polygon, in which the polygon includes a regular or irregular polygon.

The track shape refers to the shape similar to an athletics track, which is formed by alternately connecting two semicircles and two parallel straight sides.

The shape of the cross section of the first airflow channel 10a refers to the shape of the cross section of the first airflow channel 10a taken along a plane perpendicular to the first direction of the substrate section 10.

Further, the shapes of the cross sections of the first airflow channels 10a may be completely the same, or the shapes of the cross sections of at least two of the first airflow channels 10a may be different from each other, for example, the shape of the cross section of at least one of the first airflow channels 10a may be a circular shape and the shape of the cross section of at least one of the first airflow channels 10a may be a polygon.

In an example, referring to FIG. 1 to FIG. 11, the aerosol generating article 100 includes a wrapping layer 50, and the wrapping layer 50 wraps around a circumferential surface of the substrate section 10, a circumferential surface of the first functional section 20, a circumferential surface of the second functional section 30, and a circumferential surface of the third functional section 40.

The wrapping layer 50 has a certain hardness, can play a certain protective role on the substrate section 10, and reduce the surface area of the substrate section 10 directly exposed to the outside world, thereby reducing the probability of the substrate section 10 being deteriorated by moisture due to contact with the air, and in addition, reducing the probability of the contamination due to the contact between the substrate section 10 and other components in the aerosol generating device.

It should be noted that the substrate section 10 and the wrapping layer 50 may be an integrated structure. That is, the substrate section 10 and the wrapping layer 50 are different portions of the integrated structure. In this way, on the one hand, the relative position of the substrate section 10 and the wrapping layer 50 is fixed, which can reduce the probability of separation of the substrate section 10 and the wrapping layer 50 due to factors such as the temperature change and vibration during use of the aerosol generating article 100. On the other hand, the substrate section 10 and the wrapping layer 50 can be manufactured simultaneously, thereby reducing the manufacturing operations and improving the production efficiency.

For example, the integrated structure of the substrate section and the wrapping layer 50 is formed through a co-extrusion process.

Certainly, the substrate section 10 and the wrapping layer 50 may also be separable structures.

An embodiment of the present disclosure also provides an aerosol generating system including an aerosol generating device and the aerosol generating article provided by the embodiments described above. The aerosol generating device includes a heating member (not shown) configured to heat the substrate section 10 to generate an aerosol.

Specifically, the aerosol generating device includes a housing and a power supply component disposed in the housing, the housing is provided with an accommodating bin, and an electric energy output part 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 article 100 corresponding to the extent in which the substrate section 10 is located in the first direction is inserted into the accommodating bin, the electric energy output part transmits the electric energy to the heating member in a contact or non-contact manner, and the heating member receives energy from the outside to generate heat, to heat the substrate section 10 to generate the aerosol.

In the embodiment of the present disclosure, the first direction does not specifically refer to a direction in which the external profile of the substrate section 10 is the longest. Specifically, a direction in which the aerosol generating article 100 is inserted into the accommodating bin and a direction in which the aerosol generating article 100 is withdrawn from the accommodating bin are parallel to the first direction. The length of the substrate section 10 in the first direction may be longer than, shorter than, or the same as the length thereof in the other directions.

For example, when the external profile of the substrate section 10 is cylindrical, the first direction is an axial direction of the substrate section 10. It should be noted that even if the axial length of the substrate section 10 is less than the diameter thereof, the first direction of the substrate section 10 is still the axial direction. For another example, when the external profile of the substrate section 10 is a cuboid, the first direction is still the direction defined above, that is, the direction in which the aerosol generating article 100 is withdrawn from and placed into the accommodating bin, and the first direction of the substrate section 10 may be any of the length direction, the width direction and the height direction of the cuboid.

An embodiment of the present disclosure provides the aerosol generating article 100 including the substrate section 10, the first functional section 20, the second functional section 30, and the third functional section 40 which are sequentially arranged in the first direction. The substrate section 10 generates an aerosol when it is heated. One of the second functional section 30 and the third functional section 40 is a cooling section configured to cool the aerosol, to avoid the problem of “scalding the mouth”. Another one of the second functional section 30 and the third functional section 40 may have a function of supporting and/or filtering and/or cooling. In the embodiment of the present disclosure, by providing the first functional section 20, the inhalation resistance of the first functional section 20 is different from the inhalation resistance of the substrate section 10, which is beneficial to maintaining the inhalation resistance of the aerosol generating article 100 in an appropriate range, that is, the inhalation resistance of the aerosol generating article 100 can be made appropriate, and the user experience is improved. In addition, the substrate section 10 is an integrated structure, and the substrate section 10 can be formed through the extrusion molding, die casting or injection molding process, for example, to improve the uniformity of the density of the substrate section 10 and improve the stability of release and inhalation of the aerosol.

In an example, the substrate section 10, the first functional section 20, the second functional section 30, and the third functional section 40 are separable structures. Accordingly, different substrate sections 10, different first functional sections 20, different second functional sections 30, and different third functional sections 40 can be reasonably combined to meet customer requirements for different inhalation resistance and temperature, and further improve the user experience.

The specific components of the substrate section 10 are not limited herein. Exemplarily, in an embodiment, the substrate section 10 may include plant ingredients, auxiliary agent ingredients, smoking agent ingredients, adhesive ingredients, flavor ingredients, and the like.

The plant ingredients are configured to generate an aerosol when heated. The auxiliary agent ingredients are configured to provide skeletal support for the plant ingredients. The smoking agent ingredients are configured to generate smoke when heated. The adhesive ingredients are configured to bind the various raw ingredients. The flavor ingredients are configured to provide a characteristic aroma. In this way, the plant ingredients and the smoking agent ingredients can ensure the amount of the generated aerosol, while the flavor ingredients can improve the release of aroma during smoking and improve the user experience. The auxiliary agent ingredients can not only improve the fluidity of the mixed materials, but also make the substrate section 10 have a porous structure, to facilitate the extraction and flow of the aerosol. The adhesive ingredients ensure that the plant ingredients, the auxiliary agent ingredients and the like form a stable mixture, which avoids a loose structure.

Exemplarily, the plant ingredients may be one or more combinations of powders formed after a crushing treatment of tobacco raw materials, tobacco leaf fragments, tobacco stalks, tobacco powders, flavored plants, and the like. The plant ingredients are the core source of flavor, and endogenous substances in the plant ingredients can give users physiological satisfaction. The endogenous substances such as alkaloids enter the human bloodstream, and promote the generation of dopamine by the pituitary gland, thereby obtaining physiological satisfaction.

Exemplarily, the auxiliary agent ingredients may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. The inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic fillers can provide skeleton support for the plant ingredients, and at the same time, the inorganic fillers are also provided with micropores, which can improve the porosity of the substrate section 10, thereby increasing the release rate of the aerosol. The lubricants include one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricants can increase the fluidity of the plant ingredient powder, reduce the friction between the plant ingredient powder, make the overall density of the plant ingredient powder distribution more uniform, and also reduce the pressure required during the extrusion molding, and reduce the wear of the die opening. The emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. To a certain extent, the emulsifiers can slow down the loss of flavor substances during storage, increase the stability of the flavor substances and improve the sensory quality of products.

Exemplarily, the smoking agent ingredients may include one or more combinations of monohydric alcohol (such as menthol); polyol (such as propylene glycol, glycerol, triethylene glycol, 1,3-butanediol and tetraethylene glycol); ester of polyol (such as glyceryl triacetate, triethyl citrate, glyceryl diacetate mixtures, triethyl citrate, benzyl benzoate, tributyrate); monocarboxylic acid; dicarboxylic acid; polycarboxylic acid (such as lauric acid, myristic acid) or aliphatic ester of polycarboxylic acid (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, lauryl acetate).

Exemplarily, the adhesive ingredients are in close contact with the component raw material interface by wetting together with the component raw material interface to create an intermolecular attractive force, thereby bonding to the component raw material, such as a powder, a liquid, or the like. The adhesive ingredients may be one or more combinations of natural plant extracts, non-ionized modified viscous polysaccharides including tamarind polysaccharides and guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is configured to bond the particles together, which are not easy to loosen, and the adhesive further improves the water resistance of the substrate section 10, and is harmless to the human body.

Exemplarily, the flavor ingredients are configured to provide characteristic aroma, such as hay aroma, roasted sweet aroma, solid or liquid substances of nicotine. The flavor ingredients may include one or more combinations of tobacco or other plants, flavored plant extracts, extractum, essential oils, absolute oils. The flavor ingredients may include a monomeric flavoring substance, for example, one or more combinations of macrotrienone, neophytadiene, geraniol, nerol, and the like.

The substrate section 10 is provided with micropores, and the micropores communicate with each other and form micro air passages communicating with the first airflow channels 10a. That is, the micro air passages communicate with the first airflow channels 10a, and since the micro air passages are formed by the communication between the micropores, the micropores communicate with the first airflow channels 10a. In addition, the fact that the micropores communicate with each other means that some of the micropores may communicate with each other, and some others of the micropores may not communicate with each other; or all of the micropores may communicate with each other. For example, in an embodiment in which the substrate section 10 is a particle combination, gaps between the particles form the micropores. The dimensions of the micropores are determined by the gaps between the particles.

The first airflow channels 10a and the micro air passages can increase the surface area of the substrate section 10, facilitate the heat transfer, and improve the heating efficiency. The substrate in the substrate section 10 is heated to release the aerosol, the aerosol is collected into the first airflow channels 10a through the gaps between the wall materials or the micro air passages, the aerosol released by the aerosol form substrate exposed to the first airflow channels 10a (that is, the aerosol form substrate located on inner wall surfaces of the first airflow channels 10a) can be directly released to the first airflow channels 10a, and the aerosol between adjacent first airflow channels 10a can also be mutually circulated in the micro air passages and delivered to the inhalation end under the action of the inhalation negative pressure.

The first airflow channel 10a described above is a hole in a macroscopic sense, the micropore is a hole in a microscopic sense, and the cross-sectional area of the first airflow channel 10a is much greater than the cross-sectional area of the micropore.

Exemplarily, the cross-sectional area of the first airflow channel 10a is at least 20 times the cross-sectional area of the micropore. In the case where the dimension of the micropore is substantially constant, when the cross-sectional area of the first airflow channel 10a is less than 20 times the cross-sectional area of the micropore, the dimension of the first airflow channel 10a is too small, which results in that the aerosol is not easily released from the inner wall of the first airflow channel 10a into the first airflow channel 10a, the inhalation resistance for the user is large, and the inhalation feeling of the user is reduced. Therefore, in this embodiment, when the cross-sectional area of the first airflow channel 10a is greater than or equal to 20 times the cross-sectional area of the micropore, the release rate of aerosol from the inner wall of the first airflow channel 10a can be guaranteed, the inhalation resistance can also be reduced, and the inhalation experience of the user can be improved.

In some embodiments, the cross-sectional area of the first airflow channel 10a is 20 times to 60000 times the cross-sectional area of the micropore. If the cross-sectional area of the first airflow channel 10a exceeds the cross-sectional area of the micropore by 60000 times, the area of the first airflow channel 10a will be too large, the overall quality of the generated aerosol will decrease, the utilization rate of the aerosol generating substrate will be low, the heating rate will be large, and the aerosol will be easily released from the micropore to the environment.

Exemplarily, the cross-sectional area of the first airflow channel 10a is 100 times to 40000 times the cross-sectional area of the micropore.

In some embodiments, the hole diameter of the first airflow channel 10a ranges from 0.05 millimeter (mm) to 6 mm. When the diameter of the first airflow channel 10a is less than 0.05 mm, the processing cost of the substrate section 10 is high, and problems such as large inhalation resistance and low utilization rate of the substrate are likely to occur. When the diameter of the first airflow channel 10a is greater than 6 mm, the cross-sectional area thereof is large, the flow velocity of the airflow in the inhalation state in the same volume is smaller, and the aerosol is easily deposited, resulting in low utilization rate of the aerosol.

The specific value of the hole diameter of the first airflow channel 10a is not limited, and is, for example, 0.05 mm, 0.1 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 5 mm, 6 mm, or the like.

The hole diameter of the first airflow channel 10a refers to the equivalent diameter thereof.

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

The first airflow channels 10a and the micro air passages can increase the surface area of the substrate section 10, facilitate the heat transfer, and improve the heating efficiency. The substrate in the substrate section 10 is heated to release the aerosol, the aerosol is collected into the first airflow channels 10a through the gaps between the wall materials or the micro air passages, the aerosol released by the aerosol form substrate exposed to the first airflow channels 10a (that is, the aerosol form substrate located on inner wall surfaces of the first airflow channels 10a) can be directly released to the first airflow channels 10a, and the aerosol between adjacent first airflow channels 10a can also be mutually circulated in the micro air passages and delivered to the inhalation end under the action of the inhalation negative pressure.

It should be noted that one of the second functional section 30 and the third functional section 40 is a cooling section, and another one of the second functional section 30 and the third functional section 40 may be a cooling section, a supporting section, or a filtering section. The cooling section has a cooling function, the supporting section has a supporting function, and the filtering section has a filtering function.

Exemplarily, in some embodiments, the second functional section 30 is a filtering section, and the third functional section 40 is a cooling section.

It can be understood that, since the aerosol flows through the first functional section 20 and the filtering section, the first functional section 20 and the filtering section can play a function of initially cooling the aerosol.

In other embodiments, referring to FIG. 2 to FIG. 11, the second functional section 30 is a cooling section, and the third functional section 40 is a filtering section. In the embodiment of the present disclosure, an example in which the second functional section 30 is a cooling section and the third functional section 40 is a filtering section is described.

That is, the aerosol generated by heating the substrate section 10 first flows through [0085] the first functional section 20 and then flows through the cooling section to be cooled, the cooled aerosol then flows through the filtering section, and the filtering section can filter out large particle components and undesirable impurities in the aerosol. That is, the aerosol generated by heating the substrate section 10 is inhaled by the user after the adjustment of the inhalation resistance, the cooling and the filtering through the first functional section 20, the cooling section and the filtering section sequentially.

For example, in some embodiments, referring to FIG. 2 to FIG. 6, the first functional section 20 may be an integrated structure. In an embodiment, the first functional section 20 in the form of the integrated structure manufactured by the extrusion molding process has the function of resisting temperature and preventing thermal collapse in addition to the function of adjusting the inhalation resistance, and can also be loaded with flavors according to the style characteristics of the product to increase the richness of the aerosol. The extrusion molding refers to a processing method in which a raw material mixture constituting the first functional section 20 is added into an extruder, is pushed forward by a screw through an action between a barrel and the screw of the extruder, and continuously passes through a die arranged at a discharge port of the extruder, to produce various cross-sectional articles or semi-finished articles.

In other embodiments, the first functional section 20 may also be an integrated structure formed by processes such as the injection molding and the die casting.

Exemplarily, in some embodiments, the composition of the first functional section 20 is the same as the composition of the substrate section 10. In this way, during use, the first functional section 20 does not bring undesirable smell and avoids affecting the taste of the aerosol. In addition, the composition of the first functional section 20 is the same as the composition of the substrate section 10, which is more beneficial to manufacturing the first functional section 20 and the substrate section 10 through the same manufacturing process and raw materials, thereby improving the production efficiency.

Certainly, in other embodiments, the composition of the first functional section 20 is different from the composition of the substrate section 10. The first functional section 20 may be made of, for example, a plant material, a polysaccharide, a silica gel, a resin, and other different materials.

At least one second airflow channel 20a is arranged inside the first functional section 20, and referring to FIG. 2, FIG. 3, FIG. 5 and FIG. 6, the second airflow channel 20a passes through at least one end of the first functional section 20 in the first direction.

The fact that at least one second airflow channel 20a is arranged inside the first functional section 20 means that one second airflow channel 20a may be arranged inside the first functional section 20, or a plurality of second airflow channels 20a may be arranged inside the first functional section 20.

In some embodiments, the second airflow channels 20a pass through the same end of the first functional section 20 in the first direction, and another end thereof is closed.

In other embodiments, some of the second airflow channels 20a pass through the same end of the first functional section 20 in the first direction, and some others of the second airflow channels 20a pass through another end of the first functional section 20 in the first direction.

In still other embodiments, referring to FIG. 2, FIG. 3, FIG. 5 and FIG. 6, each of the second airflow channels 20a passes through two ends of the first functional section 20 in the first direction. That is, the second airflow channels 20a extend in the first direction of the first functional section 20, and airflow may flow from one end of the first functional section 20 to another end of the first functional section 20 through the second airflow channels 20a. Preferably, the second airflow channel 20a is parallel to a central axis of the first functional section 20.

It should be noted that the inhalation resistance is positively correlated with the flow resistance of the aerosol. The smaller the flow resistance of the aerosol in the first functional section 20, the smaller the inhalation resistance experienced by the user, and the larger the flow resistance of the aerosol in the first functional section 20, the larger the inhalation resistance experienced by the user.

The first functional section 20 adjusts the magnitude of the inhalation resistance by arranging the second airflow channel 20a and by controlling the design parameters of the second airflow channel 20a, for example, by controlling the parameters such as the number of the second airflow channel 20a of the first functional section 20, the cross-sectional area (the hydraulic diameter) of the second airflow channel 20a, and the cross-sectional area of the first functional section 20.

When the first functional section 20 is provided with a plurality of second airflow channels 20a, the aerosol can perform heat exchange with the wall of the second airflow channel 20a when flowing through the second airflow channel 20a, and the temperature of the aerosol can be effectively reduced by the heat exchange through multiple air passages.

It should be noted that the shape of the second airflow channel 20a is not limited herein. In an example, the shape of the cross section of the second airflow channel 20a in a plane perpendicular to the first direction of the first functional section 20 includes, but is not limited to, at least one of a circular shape (as shown in FIG. 2, FIG. 5 and FIG. 6), an elliptical shape, a track shape, an elongated shape (as shown in FIG. 3), a polygon, or a sector shape, in which the polygon includes a regular or irregular polygon.

The shape of the cross section of the second airflow channel 20a refers to the shape of the cross section of the second airflow channel 20a taken along a plane perpendicular to the first direction of the first functional section 20.

Further, the shapes of the cross sections of the second airflow channels 20a may be completely the same, or the shapes of the cross sections of at least two of the second airflow channels 20a may be different from each other, for example, the shape of the cross section of at least one of the second airflow channels 20a may be a circular shape and the shape of the cross section of at least one of the second airflow channels 20a may be a polygon.

Exemplarily, in a plane perpendicular to the first direction of the aerosol generating article 100, the sum of the cross-sectional areas of all the second airflow channels 20a is less than the sum of the cross-sectional areas of all the first airflow channels 10a, that is, the void fraction of the first functional section 20 is less than the void fraction of the substrate section 10, so that the inhalation resistance of the first functional section 20 is greater than the inhalation resistance of the substrate section 10. That is, the first functional section 20 may increase the inhalation resistance of the aerosol generating article 100, which is beneficial to maintaining the inhalation resistance of the aerosol generating article 100 in an appropriate range.

In some embodiments, referring to FIG. 2, the shape of the cross section of the second airflow channel 20a is a circular shape. When the number of the second airflow channels 20a is greater than the number of the first airflow channels 10a, the cross-sectional area of each second airflow channel 20a is less than the cross-sectional area of each first airflow channel 10a. The second airflow channels 20a having a large number and a small cross-sectional area are more conducive to adjusting the inhalation resistance of the aerosol generating article 100.

When the shape of the cross section of the second airflow channel 20a is a circular shape, the cross-sectional area of each second airflow channel 20a is less than the cross-sectional area of each first airflow channel 10a, that is, the hydraulic diameter of each second airflow channel 20a is less than the hydraulic diameter of each first airflow channel 10a.

In the embodiment of the present disclosure, the hydraulic diameter refers to the ratio of four times of the cross-sectional area of the flow to the circumference.

In other embodiments, the shape of the cross section of the second airflow channel 20a may be an elliptical shape or a polygon. When the number of the second airflow channels 20a is greater than or equal to the number of the first airflow channels 10a, the cross-sectional area of each second airflow channel 20a is less than the cross-sectional area of each first airflow channel 10a.

In yet other embodiments, referring to FIG. 3 and FIG. 12, in a plane perpendicular to the first direction of the aerosol generating article 100, the shape of the cross section of the second airflow channel 20a is an elongated shape, and the cross-sectional area of each second airflow channel 20a is greater than the cross-sectional area of each first airflow channel 10a. In this way, it facilitates the flow of the aerosol, and improves the situation that the flow of the aerosol is obstructed when the second airflow channel 20a and the first airflow channel 10a are misaligned with each other. In addition, it is beneficial to adjusting the inhalation resistance, for example, the inhalation resistance can be increased by reducing the length of the short side of the elongated second airflow channel 20a, and the inhalation resistance can be reduced by increasing the length of the short side of the elongated second airflow channel 20a. Certainly, it is also possible to increase the inhalation resistance by reducing the length of the long side of the elongated second airflow channel 20a, and to reduce the inhalation resistance by increasing the length of the long side of the elongated second airflow channel 20a.

Certainly, the shape of the cross section of the second airflow channel 20a may also be a track shape, and the cross-sectional area of each second airflow channel 20a is greater than the cross-sectional area of each first airflow channel 10a.

Exemplarily, referring to FIG. 4 and FIG. 13, an airflow channel 20c is arranged on a circumferential outer surface of the first functional section 20, and the airflow channel 20c passes through two opposite ends of the first functional section 20 in the first direction. The arrangement of the airflow channel 20c can increase the contact area between the aerosol and the first functional section 20, reduce the flow rate of the aerosol, and is more conducive to reducing the temperature of the aerosol.

It should be noted that the number of the airflow channel 20c is not limited here, that is, one airflow channel 20c may be arranged or a plurality of airflow channels 20c may be arranged. When the first functional section 20 is provided with a plurality of airflow channels 20c, the plurality of airflow channels 20c are arranged on the circumferential outer surface of the first functional section 20 and spaced apart from each other.

For example, in other embodiments, referring to FIG. 7 and FIG. 8, the first functional section 20 is in the shape of a sieve mesh. The first functional section 20 is in the shape of a sieve mesh, that is, the dimension of the first functional section 20 in the first direction is small, and the first functional section 20 is provided with a plurality of second airflow channels 20a penetrating through the first functional section 20 in the first direction. In this way, on the basis of realizing the adjustment of the inhalation resistance of the aerosol generating article 100, the dimension of the first functional section 20 in the first direction can be effectively reduced, thereby facilitating the reduction of the overall dimension of the aerosol generating article 100 and making the structure more compact.

The specific way of forming the first functional section 20 in the shape of the sieve mesh is not limited. For example, it is formed by interweaving a plurality of interlaced filamentous structures, and the interlaced filamentous structures form the second airflow channels 20a.

For another example, referring to FIG. 8, the first functional section 20 in the shape of the sieve mesh has a thin plate shape, and the second airflow channels 20a pass through the first functional section 20 in the thickness direction of the first functional section 20.

In other embodiments, referring to FIG. 9, when the first functional section 20 in the shape of the sieve mesh is in the shape of a thin plate, edges of the first functional section 20 may also be provided with flanges, and the first functional section 20 abuts against the substrate section 10 through the flanges, or abuts against the second functional section 30 through the flanges.

The specific material of the first functional section 20 in the shape of the sieve mesh is not limited, for example, a metal mesh, a paper tube covered with high permeability paper/film and the like can be selected as the material, so that the first functional section 20 has a certain temperature resistance effect. The first functional section 20 is provided with a plurality of second airflow channels 20a, and the hole diameter of the second airflow channel 20a is less than the hole diameter of the first airflow channel 10a, so that the first functional section 20 can adjust the inhalation resistance of the aerosol generating article 100. Furthermore, the aerosol can collide with the first functional section 20 and exchange heat with the first functional section 20, thereby having a cooling and/or filtering effect on the aerosol.

Exemplarily, referring to FIG. 9 and FIG. 14, the first functional section 20 is a folded-type structure or a pleated-type structure, and an interlayer air passage 20d extending in the first direction is arranged inside the folded-type structure or the pleated-type structure. In this way, in addition to adjusting the inhalation resistance of the aerosol generating article 100, it is possible to lengthen the flow path of the aerosol and the contact area with the first functional section 20, thereby also having an effect of preliminarily reducing the temperature of the aerosol. Furthermore, the first functional section 20 in the form of the folded-type structure or the pleated-type structure also has a supporting function and a filtering function.

The specific material of the first functional section 20 in the form of the folded-type structure or the pleated-type structure is not limited here, and for example, polylactic acid (PLA), paper material, or the like can be selected to be gathered and molded, and the porosity can be controlled to adjust the inhalation resistance of the aerosol generating article 100.

In addition, the first functional section 20 can be supported by a phase change material, and the phase change absorbs the heat to enhance the effect of reducing the temperature of the aerosol. The phase change material is, for example, polylactic acid (PLA), which can undergo phase change melting and endothermic heat absorption when exposed to a 120° C. steam flow.

Exemplarily, referring to FIG. 10 and FIG. 11, the first functional section 20 is a structure formed by tows. In some embodiments, referring to FIG. 10, the structure formed by tows is, for example, a solid acetate fiber structure, an air flow pore is formed through a gap between tows of the solid acetate fiber structure, and the aerosol generated by the substrate section 10 can pass through the air flow pore and flow toward the second functional section 30. The dimension of the air flow pore is less than the dimension of the first airflow channel 10a, and the air flow pore has a function of adjusting the inhalation resistance.

In addition, in the process that the aerosol passes through the air flow pore, the structure formed by tows can filter the aerosol due to the large surface area thereof, thereby filtering impurities entrained in the aerosol and improving the user experience. Furthermore, the resistance of air flow inhalation can be adjusted by the structure formed by tows, and the structure formed by tows can prevent the condensate formed after the aerosol condensation from flowing out of the aerosol generating article 100 and adversely affecting other apparatuses in the aerosol generating device.

It should be noted that the air flow pore formed in the structure formed by tows may be a pore in the macroscopic sense, or may also be a pore in the microscopic sense, that is, it cannot be directly recognized by the naked eye.

Exemplarily, referring to FIG. 2 and FIG. 5 to FIG. 8, at least one cavity 100a is arranged inside the aerosol generating article 100. It should be noted that the number of cavities 100a is not limited here, that is, there may be one cavity 100a or a plurality of cavities 100a.

It should be noted that the specific position and formation method of the cavity 100a are not limited here. For example, the cavity 100a may be formed between any two of the substrate section 10, the first functional section 20, the second functional section 30 and the third functional section 40, or may be formed at an end of the substrate section 10 away from the first functional section 20, or may be formed at an end of the third functional section 40 away from the second functional section 30.

By arranging the combined structure of the cavities 100a at different positions, the flow path of the aerosol can be increased, and the airflow passage can be increased. The structure of the cavities 100a can be combined according to the needs by using technical principles such as the heat exchange, so that beneficial effects can be achieved in terms of improving the formation, buffering, and cooling of the aerosol.

Exemplarily, in some embodiments, referring to FIG. 5, FIG. 7, and FIG. 8, the substrate section 10 and the first functional section 20 are spaced apart from each other to define a cavity 100a. That is, the substrate section 10 and the first functional section 20 are spaced apart from each other, and form the cavity 100a together with the wrapping layer 50 wrapped around the peripheral sides of the substrate section 10 and the first functional section 20. It can be understood that by forming the cavity 100a between the substrate section 10 and the first functional section 20, the aerosol generated by heating the substrate section 10 can flow into the cavity 100a, and the arrangement of the cavity 100a can buffer the aerosol generated by the substrate section 10. That is, the cavity 100a has the function of buffering and collecting the high-temperature aerosol, which can facilitate the extraction of the aerosol and improve the utilization rate of the substrate section 10. Furthermore, the arrangement of the cavity 100a can increase the contact area between the airflow flowing out of the substrate section 10 and the aerosol generating article 100, thereby achieving a better cooling effect.

Exemplarily, in other embodiments, referring to FIG. 2, the first functional section 20 and the second functional section 30 are spaced apart from each other to define a cavity 100a. That is, the first functional section 20 and the second functional section 30 are spaced apart from each other, and form the cavity 100a together with the wrapping layer 50 wrapped around the peripheral sides of the first functional section 20 and the second functional section 30. It can be understood that by forming the cavity 100a between the first functional section 20 and the second functional section 30, the aerosol generated by heating the substrate section 10 can flow toward the first functional section 20, and then flow toward the cavity 100a for buffering. In this way, the flow path of the aerosol is increased during the delivery process of the aerosol, thereby leading to a rapid cooling effect, and in addition, the arrangement of the cavity 100a can also buffer the aerosol generated by the substrate section 10.

Referring to FIG. 2 to FIG. 9, the second functional section 30 is a cooling section, and a first passage 30a passing through two ends of the cooling section in the first direction is arranged inside the cooling section. A center line of the first passage 30a coincides with or substantially coincides with a central axis of the cooling section in the first direction.

Specifically, the cooling section may be, for example, one of a hollow paper tube, an acetate fiber tube, or an aluminum foil tube. That is, a first passage 30a with a large hole diameter is arranged inside the cooling section, and the first passage 30a passes through two ends of the cooling section in the first direction. The aerosol generated by the substrate section 10 can flow through the first functional section 20 and then flow into the first passage 30a for cooling, which is beneficial to gathering the aerosol to the center to be inhaled, and which leads to the better agglomeration of the aerosol.

That is, the first functional section 20 and the cooling section are spaced apart from each other to define the cavity 100a, and the high-speed air flow enters into the first passage 30a of the cooling section from the cavity 100a to form a Venturi effect (the Venturi effect refers to the phenomenon that the flow velocity of the fluid increases when the fluid passes through the reduced flow cross section, and the flow velocity is inversely proportional to the flow cross section). The aerosol can pass through the first passage 30a relatively quickly, thus the aerosol can be extracted relatively quickly. The cross-sectional dimensions of the first passage 30a and the cavity 100a are relatively large, so that the cooling section has a large specific surface area, and can realize rapid cooling of the aerosol.

It should be noted that, in still other embodiments, referring to FIG. 6, a cavity 100a is arranged between the substrate section 10 and the first functional section 20, and a cavity 100a is arranged between the first functional section 20 and the second functional section 30. In this embodiment, when the high-temperature aerosol flows through each cavity 100a, it forms buffer diffusion and throttling pressure reduction, has the functions of throttling in sections and enhancing the effect of reducing the temperature of the aerosol, which is beneficial to the rapid extraction of the aerosol.

For example, referring to FIG. 4 and FIG. 11, a second passage 20b passing through two ends of the first functional section 20 in the first direction is arranged inside the first functional section 20, and a center line of the second passage 20b coincides with or substantially coincides with a central axis of the first functional section 20 in the first direction. The arrangement of the second passage 20b facilitates the aerosol to gather toward the center to be inhaled, which leads to the better agglomeration of the aerosol.

In some embodiments, referring to FIG. 4, the first functional section 20 is an integrated structure, the first functional section 20 may be provided with the second passage 20b, and the second airflow channel 20a may not be provided, but the first functional section 20 may be provided with an airflow channel 20c. Certainly, the first functional section 20 may be provided with a second airflow channel 20a and a second passage 20b simultaneously, the second airflow channel 20a is arrange on the peripheral side of the second passage 20b, and the cross-sectional area of the second passage 20b is greater than the cross-sectional area of the second airflow channel 20a.

In other embodiments, referring to FIG. 11, the first functional section 20 is a structure formed by tows, and the structure formed by tows is provided with a second passage 20b.

The cross-sectional area of the second passage 20b is greater than the cross-sectional area of the first passage 30a. As a result, the high-speed airflow enters the first passage 30a from the second passage 20b to form a Venturi effect, which is more conducive to cooling the airflow.

Exemplarily, the components of the filtering section may be cellulose acetate, polyethylene terephthalate (PET), polysaccharide, propylene fiber, or the like. The filtering section can filter harmful components (carbon monoxide, tar, and the like) in the aerosol, and can jointly adjust the inhalation resistance of the aerosol generating article 100 with the first functional section 20, so that the inhalation resistance meets the design requirements.

Exemplarily, the cooling section may be one of a hollow paper tube, a hollow vinegar fiber, or a corrugated paper tube. The cooling section is mainly configured to reduce the temperature of the aerosol.

In an example, the substrate section 10, the first functional section 20, the second functional section 30, and the third functional section 40 are cylinders and arranged coaxially, and the first direction is an axial direction of these four sections. The substrate section 10, the first functional section 20, the second functional section 30, and the third functional section 40 are cylinders, and arranged sequentially along the axial direction of these four sections, which can made the structure of the aerosol generating article 100 more compact, and can improve the user experience.

Ten specific embodiments will be briefly described below with reference to the accompanying drawings.

First Embodiment

Referring to FIG. 2, in this embodiment, the aerosol generating article 100 includes a substrate section 10, a first functional section 20, a second functional section 30, and a third functional section 40 sequentially arranged in a first direction, and the substrate section 10, the first functional section 20, the second functional section 30, and the third functional section 40 are separable structures. That is, the aerosol generating article 100 is a four-section combination structure in which the substrate section 10, the first functional section 20, the second functional section 30, and the third functional section 40 are sequentially combined.

The second functional section 30 is a cooling section, and the third functional section 40 is a filtering section. The cooling section is hollow vinegar fiber, and has a cooling function and a filtering function. The filtering section is solid vinegar fiber, and mainly has a filtering function.

Referring to FIG. 2, the substrate section 10 is an integrated structure, and can be formed as an integrated structure, for example, by an extrusion molding, injection molding, or die-casting molding.

The first functional section 20 may be an integrated structure formed through the extrusion molding. The first functional section 20 in the form of the integrated structure manufactured by the extrusion molding process has the function of resisting temperature and preventing thermal collapse in addition to the function of adjusting the inhalation resistance, and can also be loaded with flavors according to the style characteristics of the product to increase the richness of the aerosol.

At least one first airflow channel 10a is arranged inside the substrate section 10, and the first airflow channel 10a passes through at least one end of the substrate section 10 in the first direction. At least one second airflow channel 20a is arranged inside the first functional section 20, and the second airflow channel 20a passes through at least one end of the first functional section 20 in the first direction.

In a plane perpendicular to the first direction of the aerosol generating article 100, the shape of the cross section of the second airflow channel 20a is a circular shape. When the number of the second airflow channels 20a is greater than or equal to the number of the first airflow channels 10a, the cross-sectional area of each second airflow channel 20a is less than the cross-sectional area of the first airflow channel 10a. The second airflow channels 20a having a large number and a small cross-sectional area are more conducive to adjusting the inhalation resistance of the aerosol generating article 100.

The substrate section 10 is an integrated structure containing macro and/or micro porous structure manufactured by the extrusion molding, injection molding or die casting processes. The inhalation resistance of the substrate section 10 mainly depends on its own porosity, that is, the hole diameter and the number of the first airflow channel 10a. The upper end adopts a ternary functional section structure design consisting of the first functional section 20, the cooling section and the filtering section, which not only ensures the cooling and the efficient extraction of the smoke, but also takes into account the function of adjusting the inhalation resistance, so that the inhalation resistance of the aerosol generating article 100 meets the design requirements.

The flow mode of the aerosol in this embodiment is specifically described. Micropores are arranged inside the substrate section 10, and the micropores communicate at least partially with each other and communicate with the first airflow channel 10a. When the substrate section 10 is heated, an external airflow such as the air can enter the interior of the substrate section 10 through the first airflow channel 10a for diffusion, the aerosol generated by the substrate (i.e., a portion of the substrate section 10 exposed to the first airflow channel 10a) surrounding the first airflow channel 10a in the substrate section 10 directly enters the first airflow channel 10a, and the aerosol generated by other portions (i.e., the portions of the substrate section 10 not exposed to the first airflow channel 10a) of the substrate section 10 can be collected into the first airflow channel 10a through the micropores. Thus, during the inhalation process, the aerosol collected in the first airflow channel 10a flows into the second airflow channel 20a of the first functional section 20, the aerosol in the second airflow channel 20a flows toward the cavity 100a between the first functional section 20 and the second functional section 30, and then, under the action of the Venturi effect, the aerosol can relatively quickly pass through the first passage 30a of the second functional section 30, and finally flows into the oral cavity of the user through the third functional section 40.

Second Embodiment

Referring to FIG. 3 and FIG. 12, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, in a plane perpendicular to the first direction of the aerosol generating article 100, the shape of the cross section of the second airflow channel 20a is an elongated shape, and the cross-sectional area of each second airflow channel 20a is greater than the cross-sectional area of each first airflow channel 10a.

In this way, it facilitates the flow of the aerosol, and improves the situation that the flow of the aerosol is obstructed when the second airflow channel 20a and the first airflow channel 10a are misaligned with each other. In addition, it is beneficial to adjusting the inhalation resistance, for example, the inhalation resistance can be increased by reducing the length of the short side of the elongated second airflow channel 20a, and the inhalation resistance can be reduced by increasing the length of the short side of the elongated second airflow channel 20a. Certainly, it is also possible to increase the inhalation resistance by reducing the length of the long side of the elongated second airflow channel 20a, and to reduce the inhalation resistance by increasing the length of the long side of the elongated second airflow channel 20a.

Third Embodiment

Referring to FIG. 4 and FIG. 13, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, a second passage 20b passing through two ends of the first functional section 20 in the first direction is arranged inside the first functional section 20, and a center line of the second passage 20b coincides with or substantially coincides with a central axis of the first functional section 20 in the first direction. The arrangement of the second passage 20b facilitates the aerosol to gather toward the center to be inhaled, which leads to the better agglomeration of the aerosol.

A first passage 30a passing through two ends of the cooling section in the first direction is arranged inside the cooling section. A center line of the first passage 30a coincides with or substantially coincides with a central axis of the cooling section in the first direction.

The cross-sectional area of the second passage 20b is greater than the cross-sectional area of the first passage 30a. As a result, the high-speed airflow enters the first passage 30a from the second passage 20b to form a Venturi effect, which is more conducive to cooling the airflow.

An airflow channel 20c is arranged on a circumferential outer surface of the first functional section 20, and the airflow channel 20c passes through two opposite ends of the first functional section 20 in the first direction. The arrangement of the airflow channel 20c can increase the contact area between the aerosol and the first functional section 20, reduce the flow rate of the aerosol, and is more conducive to reducing the temperature of the aerosol.

Fourth Embodiment

Referring to FIG. 5, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, the substrate section 10 and the first functional section 20 are spaced apart from each other to define a cavity 100a. That is, the substrate section 10 and the first functional section 20 are spaced apart from each other, and form the cavity 100a together with the wrapping layer 50 wrapped around the peripheral sides of the substrate section 10 and the first functional section 20.

It can be understood that by forming the cavity 100a between the substrate section 10 and the first functional section 20, the aerosol generated by heating the substrate section 10 can flow into the cavity 100a, and the arrangement of the cavity 100a can buffer the aerosol generated by the substrate section 10. That is, the cavity 100a has the function of buffering and collecting the high-temperature aerosol, which can facilitate the extraction of the aerosol and improve the utilization rate of the substrate section 10. Furthermore, the arrangement of the cavity 100a can increase the contact area between the airflow flowing out of the substrate section 10 and the aerosol generating article 100, thereby achieving a better cooling effect.

Fifth Embodiment

Referring to FIG. 2, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, the first functional section 20 and the cooling section are spaced apart from each other to define a cavity 100a. That is, the first functional section 20 and the cooling section are spaced apart from each other, and form the cavity 100a together with the wrapping layer 50 wrapped around the peripheral sides of the first functional section 20 and the cooling section.

It can be understood that by forming the cavity 100a between the first functional section 20 and the cooling section, the aerosol generated by heating the substrate section 10 can flow toward the first functional section 20, and then flow toward the cavity 100a for buffering. In this way, the flow path of the aerosol is increased during the delivery process of the aerosol, thereby leading to a rapid cooling effect, and in addition, the arrangement of the cavity 100a can also buffer the aerosol generated by the substrate section 10.

A first passage 30a passing through two ends of the cooling section in the first direction is arranged inside the cooling section. A center line of the first passage 30a coincides with or substantially coincides with a central axis of the cooling section in the first direction.

Specifically, the cooling section may be, for example, one of a hollow paper tube, an acetate fiber tube, or an aluminum foil tube. That is, a first passage 30a with a larger hole diameter is arranged inside the cooling section. A high-speed airflow enters the first passage 30a of the cooling section from the cavity 100a to form a Venturi effect, which is more conducive to cooling the airflow.

Sixth Embodiment

Referring to FIG. 6, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, a cavity 100a is arranged between the substrate section 10 and the first functional section 20, and a cavity 100a is arranged between the first functional section 20 and the second functional section 30.

In this embodiment, when the high-temperature aerosol flows through each cavity 100a, it forms buffer diffusion and throttling pressure reduction, has the functions of throttling in sections and enhancing the effect of reducing the temperature of the aerosol, which is beneficial to the rapid extraction of the aerosol.

Seventh Embodiment

Referring to FIG. 7 and FIG. 8, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, the first functional section 20 is in the shape of a sieve mesh. The first functional section 20 is in the shape of a sieve mesh, that is, the dimension of the first functional section 20 in the first direction is small, and the first functional section 20 is provided with a plurality of second airflow channels 20a penetrating through the first functional section 20 in the first direction. In this way, on the basis of realizing the adjustment of the inhalation resistance of the aerosol generating article 100, the dimension of the first functional section 20 in the first direction can be effectively reduced, thereby facilitating the reduction of the overall dimension of the aerosol generating article 100 and making the structure more compact.

The specific material of the first functional section 20 in the shape of the sieve mesh is not limited, for example, a metal mesh, a paper tube covered with high permeability paper/film and the like can be selected as the material, so that the first functional section 20 has a certain temperature resistance effect. The first functional section 20 is provided with a plurality of second airflow channels 20a, and the hole diameter of the second airflow channel 20a is less than the hole diameter of the first airflow channel 10a, so that the first functional section 20 can adjust the inhalation resistance of the aerosol generating article 100. Furthermore, the aerosol can collide with the first functional section 20 and exchange heat with the first functional section 20, thereby having a cooling and/or filtering effect on the aerosol.

Eighth Embodiment

Referring to FIG. 9 and FIG. 14, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, the first functional section 20 is in the form of a folded-type structure, and an interlayer air passage 20d extending in the first direction is arranged inside the folded-type structure. In this way, in addition to adjusting the inhalation resistance of the aerosol generating article 100, it is possible to lengthen the flow path of the aerosol and the contact area with the first functional section 20, thereby also having an effect of preliminarily reducing the temperature of the aerosol. Furthermore, the first functional section 20 in the form of the folded-type structure also has a supporting function and a filtering function.

The specific material of the first functional section 20 in the form of the folded-type structure is not limited here, and for example, polylactic acid (PLA), paper material, or the like can be selected to be gathered and molded, and the porosity can be controlled to adjust the inhalation resistance of the aerosol generating article 100.

In addition, the first functional section 20 can be supported by a phase change material, and the phase change absorbs the heat to enhance the effect of reducing the temperature of the aerosol. The phase change material is, for example, polylactic acid (PLA), which can undergo phase change melting and endothermic heat absorption when exposed to a 120° C. steam flow.

Ninth Embodiment

Referring to FIG. 10, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, the first functional section 20 is a structure formed by tows. In some embodiments, the structure formed by tows is, for example, a solid acetate fiber structure, an air flow pore is formed through a gap between tows of the solid acetate fiber structure, and the aerosol generated by the substrate section 10 can pass through the air flow pore and flow toward the cooling section. The dimension of the air flow pore is less than the dimension of the first airflow channel 10a, and the air flow pore has a function of adjusting the inhalation resistance.

In addition, in the process that the aerosol passes through the air flow pore, the structure formed by tows can filter the aerosol due to the large surface area thereof, thereby filtering impurities entrained in the aerosol and improving the user experience. Furthermore, the resistance of air flow inhalation can be adjusted by the structure formed by tows, and the structure formed by tows can prevent the condensate formed after the aerosol condensation from flowing out of the aerosol generating article 100 and adversely affecting other apparatuses in the aerosol generating device.

It should be noted that the air flow pore formed in the structure formed by tows may be a pore in the macroscopic sense, or may also be a pore in the microscopic sense, that is, it cannot be directly recognized by the naked eye.

Tenth Embodiment

Referring to FIG. 11, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the ninth embodiment, except that in this embodiment, the structure formed by tows is a hollow vinegar fiber structure, that is, the structure formed by tows is provided with a second passage 20b.

An embodiment of the present disclosure provides the aerosol generating article including the substrate section, the first functional section, the second functional section, and the third functional section which are sequentially arranged in the first direction. The substrate section generates an aerosol when it is heated. One of the second functional section and the third functional section is a cooling section configured to cool the aerosol, to avoid the problem of “scalding the mouth”. Another one of the second functional section and the third functional section may have a function of supporting and/or filtering and/or cooling. In the embodiment of the present disclosure, by providing the first functional section, the inhalation resistance of the first functional section is different from the inhalation resistance of the substrate section, which is beneficial to maintaining the inhalation resistance of the aerosol generating article in an appropriate range, that is, the inhalation resistance of the aerosol generating article can be made appropriate, and the user experience is improved. In addition, the substrate section is an integrated structure, and the substrate section can be formed through the extrusion molding, die casting or injection molding process, for example, to improve the uniformity of the density of the substrate section and improve the stability of release and inhalation of the aerosol.

In the description of the present disclosure, an expression with reference to the terms “in an embodiment”, “in some embodiments”, “in other embodiments”, “in still other embodiments”, “exemplarily” or the like means that specific features, structures, materials, or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any one or more embodiments or examples in a suitable manner. Furthermore, those skilled in the art can combine different embodiments or examples described in the present disclosure and features of different embodiments or examples without contradicting each other.

The foregoing is merely a preferred embodiment of the present disclosure, and is not intended to limit the present disclosure, and various modifications and variations can be made for those skilled in the art. Any modifications, substitutions and improvements made within the spirit and principles of the present disclosure should be included within the scope of protection of the present disclosure.