Aerosol generation product

Abstract

The present disclosure relates to the technical field of aerosol generation, and provides an aerosol generation product. The aerosol generation product comprises an aerosol generation matrix section and a functional section, wherein the functional section is disposed at one end of the aerosol generation matrix section in a longitudinal direction; the functional section comprises a storage section; a storage cavity is formed in the storage section; inlet and outlet holes are respectively formed on two end faces of the storage section in the longitudinal direction; and the inlet and outlet holes are in communication with the storage cavity. During a puff-by-puff vaping process, a storage cavity continuously reciprocates to temporarily store and discharge an aerosol, such that a vaped aerosol amount during each puff is relatively consistent, thereby improving the consistency of aerosol release, and the probability of an aerosol being repeatedly heated can be reduced.

Description

An aerosol generating product

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202310928872.3, application date July 26, 2023, and invention name “A Aerosol Generating Product”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the field of aerosol generation technology, and in particular to an aerosol generating product. Background Art

[0004] The aerosol-generating matrix segment can form an aerosol by ignition or by heating without combustion. For example, the heat-without-combustion aerosol-generating matrix segment is heated using an external heat source to a sufficient temperature to emit an aerosol. The aerosol-generating matrix segment does not burn, and the aerosol is released during use by heating the aerosol-generating matrix segment.

[0005] In the related art, the aerosol generated by the aerosol-generating matrix section is easily heated repeatedly, resulting in a poor taste.

[0006] Summary of the Invention

[0007] In view of this, embodiments of the present disclosure aim to provide an aerosol-generating article that can reduce the probability of the aerosol being repeatedly heated.

[0008] To achieve the above objectives, the present disclosure provides an aerosol-generating article, comprising:

[0009] aerosol-generating matrix segment;

[0010] The functional section is arranged at one end of the aerosol generating matrix section along the longitudinal direction. The functional section includes a storage section, the storage section forms a storage cavity, and the two end faces of the storage section along the longitudinal direction are respectively formed with entry and exit holes, and the entry and exit holes are connected to the storage cavity.

[0011] In some embodiments, at least one end surface of the storage section along the longitudinal direction is a curved surface convex toward a direction away from the storage cavity.

[0012] In some embodiments, the aerosol-generating article includes a wrapping layer, and the periphery of the aerosol-generating substrate segment and the periphery of the functional segment are both wrapped with the wrapping layer, and the wrapping layer is formed with air inlet holes at a position corresponding to the storage segment.

[0013] In some embodiments, a portion of the outer peripheral surface of the storage segment is divided into an abutment portion and a spacer portion, the spacer portion is located on the side of the abutment portion close to the aerosol generating matrix segment in the longitudinal direction, the abutment portion is annular and abuts against the wrapping layer, the spacer portion and the wrapping layer are spaced from each other to form a accommodating space, and the air inlet is located at the accommodating space to communicate with the accommodating space.

[0014] In some embodiments, the storage section includes a cover body and a cavity, the cavity has an open opening at one end longitudinally away from the aerosol generating matrix section, the cover body closes the open opening to jointly define the storage cavity, the cover body and the cavity are both formed with the inlet and outlet holes on their longitudinal end faces, at least part of the outer circumference of the cover body is the abutment portion, and at least part of the outer circumference of the cavity is the spacer portion, and the lateral dimension of the portion of the cover body forming the abutment portion is larger than the lateral dimension of the cavity.

[0015] In some embodiments, the storage section includes a cylindrical shell and two end plates, the cylindrical shell has open openings at both ends along the longitudinal direction, the two end plates respectively close the two open openings to form the storage cavity, the two end plates are both arc-shaped structures protruding away from the cylindrical shell, the end plates are formed with the inlet and outlet holes, the outer peripheral surface of the cylindrical shell is the abutment portion, and the outer peripheral surface of the end plate close to the aerosol generating matrix section is the spacer portion.

[0016] In some embodiments, the distance between the air inlet and the end surface of the aerosol-generating substrate segment remote from the functional segment is 17 mm to 24.5 mm.

[0017] In some embodiments, the functional section includes a filtering section, which is located at one end of the storage section away from the aerosol generating matrix section in the longitudinal direction. The aerosol generating matrix section and the filtering section are both cylindrical structures, and the storage section is a rotating body structure. The aerosol generating matrix section, the filtering section and the storage section are coaxially arranged, and the longitudinal direction is the central axis direction of the aerosol generating matrix section, the filtering section and the storage section or a direction parallel to the central axis.

[0018] In some embodiments, the two air inlet holes constitute an air inlet group, and the two air inlet holes of the air inlet group are arranged along a straight line perpendicular to the longitudinal direction.

[0019] In some embodiments, the functional segment includes a filtering segment, which is located at one end of the storage segment longitudinally away from the aerosol generating substrate segment, and the storage segment is in contact with or spaced from the filtering segment at an end surface thereof longitudinally close to the filtering segment.

[0020] In some embodiments, the storage segment is in contact with or spaced apart from the aerosol-generating substrate segment in the longitudinal direction near an end surface of the aerosol-generating substrate segment.

[0021] In some embodiments, the aerosol-generating substrate segment is formed with an air channel, and the air channel runs through at least one end surface of the aerosol-generating substrate segment in the longitudinal direction.

[0022] In some embodiments, the area of ​​the flow cross section of the air passage is equal to the area of ​​the flow cross section of the inlet and outlet holes.

[0023] In some embodiments, a flavoring substance is disposed in the storage cavity.

[0024] In some embodiments, the number of access holes on at least one end surface of the storage section along the longitudinal direction is greater than 2 and no greater than 100.

[0025] In some embodiments, the hydraulic diameter of the inlet and outlet holes is 0.1 mm to 2 mm; and / or,

[0026] The roughness of the cavity wall of the storage cavity is no greater than 5 μm.

[0027] The aerosol generating product provided by the embodiments of the present disclosure has an aerosol generating matrix segment that generates aerosol when heated. During the process of the user taking puffs one by one, in the interval between puffs, the aerosol generated by the aerosol generating matrix segment can enter the storage cavity through the upstream inlet and outlet holes. When the next puff is taken, the negative pressure drives the aerosol temporarily stored in the storage cavity to be discharged from the storage cavity through the downstream inlet and outlet holes. In this way, during the process of taking puffs one by one, the storage cavity continuously and reciprocally temporarily stores and discharges the aerosol, so that the amount of aerosol in each puff is relatively consistent, thereby improving the consistency of aerosol release and reducing the probability of the aerosol being repeatedly heated. Each puff of aerosol inhaled is "fresh", which can effectively solve the taste difference caused by repeated heating of the aerosol. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic structural diagram of a first aerosol-generating article in one embodiment of the present disclosure;

[0029] FIG2 is a cross-sectional view of the first aerosol-generating article shown in FIG1 ;

[0030] FIG3 is a schematic structural diagram of a second aerosol-generating article according to an embodiment of the present disclosure;

[0031] FIG4 is a schematic structural diagram of a third aerosol-generating article according to an embodiment of the present disclosure;

[0032] FIG5 is a schematic structural diagram of a fourth aerosol-generating article according to an embodiment of the present disclosure;

[0033] FIG6 is a schematic structural diagram of a fifth aerosol-generating article in one embodiment of the present disclosure;

[0034] FIG7 is a schematic structural diagram of a sixth aerosol-generating article in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of the present disclosure can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of the purpose of the present disclosure and should not be regarded as an improper limitation on the present disclosure.

[0036] In the present disclosure, a plurality includes two and more than two. The unit "mm" is millimeter. The unit "μm" is micrometer. The unit "℃" is Celsius.

[0037] Please refer to Figures 1 and 2. An embodiment of the present disclosure provides an aerosol-generating product, which includes an aerosol-generating matrix segment 1 and a functional segment 2. The functional segment 2 is arranged at one end of the aerosol-generating matrix segment 1 along the longitudinal direction. The functional segment 2 includes a storage segment 21. The storage segment 21 forms a storage cavity 21a. The two end faces of the storage segment 21 along the longitudinal direction are respectively formed with inlet and outlet holes 21b, and the inlet and outlet holes 21b are connected to the storage cavity 21a.

[0038] In the embodiments of the present disclosure, the aerosol-generating substrate segment 1 is used to generate aerosols by heating. Exemplarily, the aerosol-generating substrate segment 1 can be used to generate aerosols by heating without burning. That is, the aerosol-generating substrate segment 1 is heated to below its ignition point to generate aerosols. The aerosol-generating substrate segment 1 does not burn during the aerosol generation process. In some application scenarios, the aerosol-generating substrate segment 1 can be used to generate aerosols by ignition. The aerosol-generating substrate segment 1 of the present disclosure is more commonly used to generate aerosols by heating without burning.

[0039] The aerosol-generating article is designed to allow a user to inhale the aerosol generated by the aerosol-generating matrix segment 1. For example, the user can inhale the aerosol by inhaling, and the aerosol generated by the aerosol-generating matrix segment 1 is transported to the user under the action of the negative pressure of the suction. In other words, the end where the functional segment 2 is located is the downstream end.

[0040] The inlet and outlet holes 21b are used to allow airflow to enter or exit the storage section 21. Illustratively, the aerosol generated by the aerosol-generating substrate segment 1 flows longitudinally to the inlet and outlet holes 21b near the aerosol-generating substrate segment 1, enters the storage section 21 from the inlet and outlet holes 21b near the aerosol-generating substrate segment 1, and then exits the storage chamber 21a through the inlet and outlet holes 21b away from the aerosol-generating substrate segment 1.

[0041] For ease of description, in this disclosure, the end surface of the storage segment 21 longitudinally closer to the aerosol-generating substrate segment 1 and the inlet and outlet hole 21b located thereon are defined as the upstream end surface and upstream inlet and outlet hole 21ba, respectively. The end surface of the storage segment 21 longitudinally farther from the aerosol-generating substrate segment 1 and the inlet and outlet hole 21b located thereon are defined as the downstream end surface and downstream inlet and outlet hole 21bb, respectively.

[0042] In the aerosol generating product provided by the embodiment of the present disclosure, the aerosol generating matrix segment 1 is heated to generate aerosol. During the user's puffing process, the aerosol generated by the aerosol generating matrix segment 1 can enter the storage chamber 21a through the upstream inlet and outlet holes 21ba in the puffing intervals between each puff. When the next puff is taken, the negative pressure drives the aerosol temporarily stored in the storage chamber 21a to be discharged from the storage chamber 21a through the downstream inlet and outlet holes 21bb. In this way, during the puffing process, the storage chamber 21a continuously and reciprocally temporarily stores and discharges the aerosol, so that the amount of aerosol in each puff is relatively consistent, thereby improving the consistency of aerosol release and reducing the probability of the aerosol being repeatedly heated. Each puff of aerosol inhaled is "fresh", which can effectively solve the taste difference caused by repeated heating of the aerosol.

[0043] The aerosol-generating article may be for use with an aerosol-generating device having a heating element.

[0044] The aerosol generating device provided in the embodiment of the present disclosure is used for the aerosol generating product in any embodiment of the present disclosure. The aerosol generating device includes a heating element, which is used to heat the aerosol generating substrate segment 1 to generate an aerosol.

[0045] The heating methods of the heating element include, but are not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating. Transferring heat in the form of thermal convection means that the heating element is not in contact with the aerosol-generating matrix segment 1, and the heating element first heats the air, and then the hot air bakes and heats the aerosol-generating matrix segment 1. Heat conduction means that the heating element is in contact with the aerosol-generating matrix segment 1 and conducts heat to the aerosol-generating matrix segment 1. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol-generating matrix segment 1 in the form of thermal conduction or thermal convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol-generating matrix segment 1 in the form of thermal radiation. That is, the heating element can heat the aerosol-generating matrix segment 1 in one or more of the three forms of thermal conduction, thermal convection and thermal radiation.

[0046] In one embodiment, referring to FIG2 , the aerosol-generating matrix segment 1 is formed with an air channel 1a, which penetrates at least one longitudinal end surface of the aerosol-generating matrix segment 1. For example, the air channel 1a penetrates one longitudinal end of the aerosol-generating matrix segment 1. For another example, the air channel 1a penetrates both longitudinal ends of the aerosol-generating matrix segment 1. Airflow can flow from one end of the aerosol-generating matrix segment 1 along the air channel 1a to the other end of the aerosol-generating matrix segment 1. The aerosol can flow more smoothly through the air channel 1a, the aerosol can be delivered in an orderly manner, the aerosol flow resistance is smaller, and the controllability is better, thereby effectively improving the aerosol extraction efficiency and enhancing the inhalation experience.

[0047] In one embodiment, referring to Figures 2 to 7 , the airway 1a is a linear airway 1a extending in a straight line in the longitudinal direction. The linear airway 1a is easy to form, which reduces manufacturing difficulty. The flow resistance of the airflow in the linear airway 1a is relatively small.

[0048] In one embodiment, referring to FIG. 2 to FIG. 7 , there may be multiple air passages 1 a .

[0049] In some embodiments, the end surface of the aerosol-generating matrix segment 1 longitudinally distal to the functional segment 2 can be self-sealed or sealed in conjunction with the aerosol-generating device. For example, in some embodiments, the heating element can seal the end surface of the aerosol-generating matrix segment 1 longitudinally distal to the functional segment 2. In other embodiments, the end surface of the aerosol-generating matrix segment 1 longitudinally distal to the functional segment 2 can be sealed by a sealing element. The outer peripheral surface of the aerosol-generating matrix segment 1 is wrapped with a wrapping layer 3. This makes it difficult for outside air to enter the aerosol-generating matrix segment 1 through the end surface of the aerosol-generating matrix segment 1 longitudinally distal to the functional segment 2, allowing the aerosol-generating matrix segment 1 to be heated in a low-oxygen or even oxygen-free environment. The aerosol-generating product is always in an oxygen-free or low-oxygen state during the puffing process. By blocking or reducing the entry of air into the aerosol-generating matrix segment 1, the heat dilution caused by air can be reduced, the heating efficiency can be improved, and the temperature field of the heating chamber of the heating element can be maintained continuously stable. It can also reduce the participation of oxygen, further reducing the generation of undesirable substances and reducing the probability of carbonization of the aerosol-generating matrix segment 1.

[0050] In one embodiment, the aerosol-generating substrate segment 1 is an integrally formed structure.

[0051] For example, the aerosol-generating matrix segment 1 can be made into an integral structure by injection molding, die casting, or extrusion. In this way, the aerosol-generating matrix segment 1 remains as a single piece during use, such as when heated for inhalation or after heating is stopped, and is less likely to disintegrate or fall off.

[0052] Extrusion molding refers to a processing method in which a material passes through the interaction between the barrel and the extrusion screw of an extruder, is heated and plasticized, and is pushed toward the discharge port by the extrusion screw. The material is then formed into an aerosol-forming matrix segment 1 having a predetermined cross-sectional shape and corresponding pores through an extrusion die, such as a die. For example, the air channel 1a can be formed by a die, such as a die.

[0053] It should be noted that micropores may exist within the aerosol-generating matrix segment 1. For example, in the aerosol-generating matrix segment 1 of a particle assembly, the gaps between the particles constitute micropores. However, the airway 1a described in the present disclosure is different from the micropores. The airway 1a described in the present disclosure is a pore in the macroscopic sense, while the micropores are pores in the microscopic sense. The cross-sectional area and length of the airway 1a are much larger than those of the micropores. The airway 1a is mainly formed by design and processing, such as by die processing. Therefore, the cross-sectional area and length of the airway 1a can be changed according to design requirements, while the size of the micropores is determined by the gaps between the particles. For example, if the material is a granular material, the aerosol-generating matrix segment 1 formed by extrusion of the material has micropores. The cross-sectional area and length of the micropores are naturally formed by the extrusion process and the material components. The micropores can be formed by a certain expansion of the material after the material flows out of the die.

[0054] In one embodiment, as shown in Figure 2 , the cross-sectional area of ​​the flow passage 1a is equal to the cross-sectional area of ​​the flow passage 21b. This aligns the aerosol release rate from the air passage 1a with the aerosol flow rate through the access opening 21b, allowing for smooth radial flow of the aerosol. The efficiency of aerosol release from the aerosol-generating matrix segment 1 and the efficiency of aerosol storage in the storage segment 21 are essentially the same.

[0055] In one embodiment, each air passage 1a may correspond to an upstream inlet and outlet hole 21ba and a downstream inlet and outlet hole 21bb, so as to facilitate smooth airflow.

[0056] In one embodiment, referring to Figure 7, the storage chamber 21a is provided with a flavoring substance 4. The flavoring substance 4 not only enriches or supplements the aroma, but also reduces the temperature of the aerosol by absorbing heat and releasing aroma.

[0057] Flavoring substances 4 generally refer to substances contained in oral ingestion that produce sensory impressions on sensory organs, such as the tongue. Sensory impressions include physical, chemical, and psychological sensations. For example, flavoring substances 4 may be fragrance substances, including but not limited to rose pollen or granules, tangerine peel powder or granules, etc. For example, during temporary storage in the storage chamber 21a, the aerosol undergoes molecular surface concentration with the fragrance substance, which is then carried out in the next puff, thereby providing flavor compensation, improving mouthfeel, and enhancing the characteristic aroma.

[0058] The flavoring substance 4 can come into contact with the aerosol and absorb the heat of the aerosol to release the flavor, thereby cooling the aerosol.

[0059] For example, the flavoring substance 4 can be assembled into the storage cavity 21a by injection, coating or filling.

[0060] In one embodiment, referring to Figures 1 to 7, the aerosol-generating product includes a wrapping layer 3. The periphery of the aerosol-generating matrix segment 1 and the periphery of the functional segment 2 are both wrapped with the wrapping layer 3. The wrapping layer 3 is formed with an air inlet 3a at the portion corresponding to the storage segment 21. Specifically, the air inlet 3a passes through the two lateral surfaces of the wrapping layer 3. The air inlet 3a is used to introduce external airflow, such as air, into the location of the storage segment 21. The external air and aerosol can form a vortex at the upstream end face of the storage segment 21, and under the action of negative pressure, are sucked into the storage cavity 21a and temporarily stored in the storage cavity 21a, thereby improving the extraction efficiency of the aerosol. Since the air inlet 3a is located downstream of the aerosol-generating matrix segment 1, it can also reduce the probability of air and the aerosol-generating matrix segment 1 reacting to produce undesirable substances during the heating process, thereby improving the purity of the aerosol.

[0061] It should be understood that the portion of the wrapping layer 3 corresponding to the storage section 21 refers to the portion of the wrapping layer 3 surrounding the outer periphery of the storage section 21 .

[0062] It should be noted that the transverse direction is perpendicular to the longitudinal direction. Taking the aerosol generating substrate segment 1 as an example in a cylindrical shape, the transverse direction is the radial direction.

[0063] In some embodiments, referring to FIG. 2 to FIG. 5 , at least one end surface of the storage section 21 along the longitudinal direction is a plane.

[0064] In one embodiment, please refer to Figures 2 to 7 , at least one end surface of the storage section 21 along the longitudinal direction is an arc surface that bulges away from the storage chamber 21a. For example, please refer to Figures 2 to 5 , one end surface of the storage section 21 along the longitudinal direction is an arc surface that bulges away from the storage chamber 21a. For another example, please refer to Figures 6 and 7 , both end surfaces of the storage section 21 along the longitudinal direction are arc surfaces that bulge away from the storage chamber 21a. With such a design, the flow cross-section of the flow channel defined by the arc surface gradually changes, for example, gradually increases or gradually decreases. In this way, a high-speed airflow is formed in the inlet and outlet holes 21b located at the convex portion of the arc surface, and negative pressure is generated, so that the airflow around the convex portion of the arc surface is attracted and gathered to the convex portion of the arc surface, accelerating the mixing and / or discharge of the airflow.

[0065] Exemplarily, in one embodiment, please refer to Figures 6 and 7, the upstream end face is an arc surface that bulges away from the storage chamber 21a. In this way, the flow cross-section of the flow channel defined by the upstream end face gradually increases along the flow direction of the airflow. In other words, the flow channel defined by the upstream end face is an expansion flow channel. Under the Venturi effect, the upstream end face can accelerate the external airflow, such as air and aerosol, to mix at the upstream end face. The external air and aerosol form mixed deposition and particle collisions, which can not only increase the airflow volume, but also quickly reduce the temperature of the aerosol, thereby improving the "hot mouth" phenomenon when the user inhales the aerosol. Exemplarily, under the Venturi effect of the storage section 21, the temperature of the aerosol is reduced from 185°C to 45°C.

[0066] For example, the ratio of ambient air to aerosol can be 5:1 to 10:1. The amount of ambient air intake can be controlled by adjusting the hydraulic diameter and number of the air inlet holes 3a. The corresponding relationship between the hydraulic diameter of the air inlet holes 3a, the flow rate of the ambient air, and the suction pressure can be directly calculated using the "Bernoulli equation."

[0067] In one embodiment, as shown in Figures 2 to 7 , the downstream end surface is curved and convex away from the storage chamber 21a. This allows the flow path defined by the downstream end surface to gradually decrease in cross-section along the direction of airflow. In other words, the flow path defined by the upstream end surface forms a converging flow path. During inhalation, the downstream end surface and downstream inlet and outlet opening 21bb increase the discharge velocity of the aerosol-air mixture.

[0068] In one embodiment, the center point of the curved surface may be on the center line of the aerosol generating article along the longitudinal extension. Since the fluid flow rate is faster the closer to the center line, it is easier for the airflow to converge toward the center.

[0069] It should be noted that the center line of the aerosol-generating article extending in the longitudinal direction refers to the line connecting the geometric center points of the two end surfaces of the aerosol-generating article in the longitudinal direction.

[0070] In one embodiment, the radius of curvature of the curved surface is 3.5 mm to 8.0 mm. For example, the radius of curvature of the curved surface is 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, or 8 mm, etc. This ensures that the outside air and the aerosol are fully mixed at the curved surface, while also accelerating the discharge of air from the storage chamber 21 a.

[0071] In one embodiment, referring to Figures 2 to 7 , the number of access holes 21b on at least one longitudinal end surface of the storage section 21 is greater than two and no greater than 100. For example, in one embodiment, the number of upstream access holes 21ba is 3, 10, or 100, etc. In one embodiment, the number of downstream access holes 21bb is 3, 10, or 100, etc.

[0072] In some embodiments, the shape of the flow cross section of the inlet and outlet hole 21b includes but is not limited to a circle, an ellipse, or a polygon (such as a square, a prism, or a pentagon, etc.).

[0073] In one embodiment, the hydraulic diameter of the inlet and outlet holes 21b is 0.1 mm to 2 mm. For example, the hydraulic diameter of the inlet and outlet holes 21b is 0.1 mm, 0.5 mm, 1 mm, or 2 mm, etc. A moderate hydraulic diameter of the inlet and outlet holes 21b provides a moderate flow cross-sectional area, facilitating airflow into or out of the storage chamber 21a, enabling the storage chamber 21a to effectively temporarily store aerosols.

[0074] It should be noted that the hydraulic diameter refers to the ratio of four times the cross-sectional area of ​​the flow path to the perimeter. The flow path refers to the cross-section perpendicular to the streamlines of the fluid. For example, if the flow path of the inlet and outlet 21b is a regular quadrilateral, the hydraulic diameter is the ratio of four times the area of ​​the regular quadrilateral flow path of the inlet and outlet 21b to the perimeter of the regular quadrilateral. For another example, if the flow path of the inlet and outlet 21b is circular, the hydraulic diameter is the diameter of the circular inlet and outlet 21b.

[0075] In one embodiment, the roughness of the wall surface of the storage cavity 21a is no greater than 5 μm. For example, the roughness of the wall surface of the storage cavity 21a is 1 μm, 2 μm, 3 μm, 4 μm, or 5 μm, etc. This prevents excessive viscous forces between the wall surface of the storage cavity 21a and the airflow due to excessive roughness of the wall surface of the storage cavity 21a, which could cause stagnation of the airflow (including external air and / or aerosols) and excessive airflow resistance.

[0076] In one embodiment, the material of the storage section 21 has a temperature tolerance of not less than 150°C. The temperature tolerance of the material of the storage section 21 is 150°C or 200°C, for example. For example, the heating temperature of the aerosol-generating substrate section 1 is approximately 300°C, and the temperature of the aerosol is generally around 100°C. A temperature tolerance of not less than 150°C for the material of the storage section 21 can prevent deformation of the storage section 21.

[0077] The temperature tolerance of the material of the storage section 21 refers to the temperature at which the storage section 21 does not change in shape when heated.

[0078] In one embodiment, referring to Figures 2 to 7 , a portion of the outer circumference of the storage segment 21 is divided into an abutment portion 21c and a spacer portion 21d. The spacer portion 21d is located on a side of the abutment portion 21c that is closer to the aerosol-generating substrate segment 1 in the longitudinal direction. In other words, the spacer portion 21d is located upstream of the abutment portion 21c.

[0079] The abutment portion 21c is annular and abuts against the wrapping layer 3. Thus, the abutment portion 21c abuts against the wrapping layer 3, sealing the gap between the inner circumference of the wrapping layer 3 and the abutment portion 21c. In other words, there is no gap between the abutment portion 21c and the inner circumference of the wrapping layer 3, preventing airflow from passing between the abutment portion 21c and the inner circumference of the wrapping layer 3.

[0080] The spacer 21d and the wrapping layer 3 are spaced apart to form a storage space 21da. The air inlet 3a is located within the storage space 21da and communicates with the space. Thus, outside air from the air inlet 3a enters the storage space 21da and mixes with the aerosol. Because the airflow cannot pass between the abutment portion 21c and the inner circumference of the wrapping layer 3, it enters the storage chamber 21a entirely through the upstream inlet and outlet 21ba.

[0081] Illustratively, the spacer 21d is annular.

[0082] In one embodiment, referring to Figures 2 to 5 , the storage segment 21 includes a cover 211 and a cavity 212. The cavity 212 has an open opening at one end longitudinally distal from the aerosol-generating substrate segment 1. The cover 211 seals the open opening to define a storage cavity 21a. Access holes 21b are formed on the longitudinal end surfaces of both the cover 211 and the cavity 212. At least a portion of the outer circumference of the cover 211 serves as an abutment portion 21c, while at least a portion of the outer circumference of the cavity 212 serves as a spacer portion 21d. The portion of the cover 211 where the abutment portion 21c is formed has a transverse dimension greater than the transverse dimension of the cavity 212. Thus, the abutment portion 21c on the cover 211 abuts the wrapping layer 3. A storage space 21da is formed between the spacer portion 21d on the cavity 212 and the wrapping layer 3.

[0083] In one exemplary embodiment, the cover body 211 includes a cover plate, an annular shell, and a transition shell. Both the annular shell and the transition shell are hollow structures with openings at both ends in the longitudinal direction. The diameter of the annular shell is larger than the diameter of the cavity 212. The outer circumference of the annular shell serves as an abutment portion 21c. The transition shell's ends in the longitudinal direction connect the annular shell and the area surrounding the opening of the cavity 212, respectively. The cover plate seals the opening of the annular shell away from the transition shell. The transition shell may, for example, form a stepped surface perpendicular to the radial direction, such that the larger diameter end of the transition shell connects to the annular shell, and the smaller diameter end of the transition shell connects to the area surrounding the opening of the cavity 212.

[0084] In one embodiment, the cover 211 and cavity 212 can be connected together by an interference fit. The cover 211 and cavity 212 can be independent structures, that is, the cover 211 and cavity 212 can be manufactured separately. The cover 211, such as a transition shell, is inserted into the open opening of the cavity 212, or the cover 211, such as a transition shell, is placed around the outer periphery of the open opening of the cavity 212. In this way, the transition shell and cavity 212 are connected by an interference fit.

[0085] For example, in one embodiment, the air inlet 3a is located at the transition shell. Preferably, the air inlet 3a is located at the connection between the transition shell and the cavity 212.

[0086] Illustratively, in one embodiment, referring to FIG. 2 to FIG. 5 , the longitudinal end surface of the cover body 211 , such as the cover plate, protrudes toward the side away from the aerosol generating substrate segment 1 .

[0087] Illustratively, in one embodiment, the longitudinal end surface of the cavity 212 is convex toward the side close to the aerosol-generating substrate segment 1 or is flat.

[0088] In one embodiment, referring to Figures 6 and 7 , the storage section 21 comprises a cylindrical shell 213 and two end plates 214. The cylindrical shell 213 has an opening at each longitudinal end. The two end plates 214 respectively seal the openings to form a storage chamber 21a. Both end plates 214 are arc-shaped, convex away from the cylindrical shell 213. Each end plate 214 has an access hole 21b. The outer circumference of the cylindrical shell 213 serves as an abutment portion 21c, while the outer circumference of the end plate 214 proximal to the aerosol-generating matrix segment 1 serves as a spacer portion 21d. The storage section 21 is generally a body of rotation with its central axis extending longitudinally. The outer circumference of the cylindrical shell 213 allows for better contact with the wrapping layer 3, providing a good and stable support therebetween.

[0089] In one embodiment, referring to FIG3 , the distance L1 between the spacer 21 d and the wrapping layer 3 is 0.5 mm to 2 mm. For example, the distance L1 between the spacer 21 d and the wrapping layer 3 is 0.5 mm, 1 mm, 1.5 mm, or 2 mm, etc. This allows for the capacity of both the accommodating space 21 da and the storage cavity 21 a to be balanced.

[0090] In one embodiment, referring to FIG3 , the distance L2 between the air inlet 3a and the end surface of the aerosol-generating matrix segment 1 distal from the functional segment 2 is 17 mm to 24.5 mm. Exemplarily, the distance L2 between the air inlet 3a and the end surface of the aerosol-generating matrix segment 1 distal from the functional segment 2 is 17 mm, 18 mm, 20 mm, 20.5 mm, 22 mm, or 24.5 mm, etc. This moderate distance between the air inlet 3a and the aerosol-generating matrix segment 1 facilitates rapid contact and mixing between the ambient air from the air inlet 3a and the aerosol, while minimizing contact between the ambient air from the air inlet 3a and the aerosol-generating matrix segment 1.

[0091] In one embodiment, referring to FIG1 , the number of the air inlet holes 3 a is greater than 2. The number of the air inlet holes 3 a is a positive integer greater than 2. In this way, the external air supply can be ensured through the multiple air inlet holes 3 a.

[0092] In one embodiment, the hydraulic diameter of the air inlet 3a is 0.05 mm to 0.2 mm. The hydraulic diameter of the air inlet 3a is 0.05 mm, 0.1 mm, 0.15 mm, or 0.2 mm, etc. In this way, the air inlet 3a has little effect on the structural strength of the wrapping layer 3, and the air intake of each air inlet 3a is moderate.

[0093] It should be noted that the aerosol generating matrix segment 1 is a particle assembly, and micropores are formed between the particles of the particle assembly, that is, the gaps between the particles constitute micropores, and the micropores are connected to form micro airways connected to the airway 1a.

[0094] In the disclosed embodiment, the air channels 1a and micropores can increase the surface area of ​​the aerosol-generating matrix segment 1, facilitate heat transfer, and improve heating efficiency. When heated, the dielectric material of the aerosol-generating matrix segment 1 releases aerosols, which are collected in the air channels 1a through the gaps between the wall materials or the micro-air channels. Aerosols released by the dielectric material exposed to the air channels 1a (i.e., the dielectric material located on the inner wall surface of the air channels 1a) can be released directly into the air channels 1a. Aerosols between adjacent air channels 1a can also circulate through the micro-air channels and are transported to the downstream end, i.e., the end where the functional segment 2 is located, under the action of the suction negative pressure.

[0095] In one embodiment, referring to Figures 2 and 3 , two air inlet holes 3a constitute an air inlet group, and the two air inlet holes 3a of the air inlet group are arranged along a straight line perpendicular to the longitudinal direction. For example, the aerosol-generating article is cylindrical, and the two air inlet holes 3a of the air inlet group are symmetrically arranged along the diameter of the aerosol-generating article.

[0096] In some embodiments, there are multiple air intake groups, which are spaced apart along the circumference. In this way, external air can be introduced into each position of the storage section 21 in the circumference.

[0097] In one embodiment, referring to Figures 2 to 7 , the functional section 2 includes a filter section 22, which is located at one end of the storage section 21 longitudinally away from the aerosol-generating substrate section 1. In other words, the filter section 22 is located downstream of the storage section 21. The filter section 22 is used to filter the aerosol.

[0098] For example, the filter section 22 can block particles of a target size and adjust the inhalation resistance. For example, the filter section 22 can filter large particles similar to powdered substances. The aerosol filtered through the filter section 22 has a more consistent particle size and a more delicate taste.

[0099] The end surface of the storage section 21 that is close to the filter section 22 in the longitudinal direction is in contact with or spaced from the filter section 22. For example, referring to Figures 4 and 5, the end surface of the storage section 21 that is close to the filter section 22 in the longitudinal direction is in contact with the filter section 22. The airflow discharged from the downstream inlet and outlet holes 21bb of the storage section 21 can quickly enter the filter section 22, making the taste stronger. For another example, referring to Figures 2 and 3, the end surface of the storage section 21 that is close to the filter section 22 in the longitudinal direction is spaced from the filter section 22. In this way, the gap between the end surface of the storage section 21 that is close to the filter section 22 in the longitudinal direction and the filter section 22 can provide a buffering effect, making the taste softer.

[0100] In one embodiment, referring to Figures 2 to 6 , the functional segment 2 includes a filtration segment 22, which is located at one end of the storage segment 21 longitudinally distal from the aerosol-generating substrate segment 1. Both the aerosol-generating substrate segment 1 and the filtration segment 22 are cylindrical structures, while the storage segment 21 is a rotating body. The aerosol-generating substrate segment 1, the filtration segment 22, and the storage segment 21 are coaxially arranged, with the longitudinal direction being the central axis of the aerosol-generating substrate segment 1, the filtration segment 22, and the storage segment 21, or a direction parallel to the central axis. This allows the aerosol generated by the aerosol-generating substrate segment 1 to flow more smoothly in the longitudinal direction.

[0101] The central axis refers to the symmetry line of axially symmetrical figures and rotating figures.

[0102] In one embodiment, the storage segment 21 is in contact with or spaced from the aerosol-generating matrix segment 1 at the end face thereof in the longitudinal direction. For example, referring to Figures 3 and 5 , the storage segment 21 is in contact with the aerosol-generating matrix segment 1 at the end face thereof in the longitudinal direction. The aerosol generated by the aerosol-generating base can directly enter the storage cavity 21a through the upstream access hole 21ba, reducing the distance the aerosol generated by the aerosol-generating base needs to travel to enter the storage cavity 21a. For another example, referring to Figures 6 and 7 , the storage segment 21 is in contact with or spaced from the aerosol-generating matrix segment 1 at the end face thereof in the longitudinal direction. In this way, the gap between the end face of the storage segment 21 in the longitudinal direction that is close to the aerosol-generating matrix segment 1 and the aerosol-generating matrix segment 1 can provide a buffering effect and can also provide more space for the aerosol and the outside air to mix.

[0103] In some embodiments, the filter segment 22 may be solid acetate fiber (see Figures 1 to 7) or hollow acetate fiber. Acetate fiber is a structure composed of filament bundles spaced side by side in a circumferential direction. Hollow acetate fiber means that the central area of ​​the filament bundle is hollow. Solid acetate fiber means that there are only gaps between the filament bundles and no hollowness. The filter segment 22 using the above structure can achieve directional filtration of harmful components in aerosols and adjust the suction resistance. Exemplarily, the suction resistance capacity of the filter segment 22 is 100Pa to 350Pa (inclusive).

[0104] In some embodiments, the shapes of the flow cross-sections of the air inlet 3a and the air passage 1a include, but are not limited to, circular, elliptical, or polygonal (eg, square, prism, or pentagon, etc.).

[0105] In some embodiments, the projection of the filter segment 22 and the aerosol-generating substrate segment 1 can be circular, elliptical, or polygonal (e.g., square, prism, or pentagonal) with the plane perpendicular to the longitudinal direction as the projection plane. In other words, the filter segment 22 and the aerosol-generating substrate segment 1 can both be cylindrical or prismatic.

[0106] In some embodiments, the storage section 21 may be made of a temperature-resistant and hydrophobic material, including but not limited to metal materials, PLA (Polylactic Acid), PLL (poly-L-lysine), and the like.

[0107] The filter material used in the filter section 22 includes but is not limited to one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber and the like.

[0108] In one embodiment, the aerosol-generating substrate segment 1 comprises plant raw materials, auxiliary raw materials, smoke-generating agent raw materials, adhesive raw materials, and flavor raw materials.

[0109] The plant raw material is used to generate aerosols when heated. The auxiliary raw material is used to provide a skeleton support for the plant raw material. The smoke-generating agent raw material is used to generate a large amount of smoke when heated. The adhesive raw material is used to bond the component raw materials. The flavor raw material is used to provide a characteristic aroma. In this way, the plant raw material and the smoke-generating agent raw material can ensure the amount of aerosol generated, while the flavor raw material can enhance the release of aroma during the inhalation process and improve the user experience. The auxiliary raw material can not only improve the fluidity of the mixed material, but also make the aerosol-generating matrix segment 1 porous to facilitate the extraction and flow of the aerosol. The adhesive raw material ensures that the plant raw material powder and the auxiliary agent constitute a stable mixture to avoid a loose structure.

[0110] In one embodiment, the plant raw material is one or more combinations of crushed tobacco leaves, tobacco leaf fragments, tobacco stems, tobacco dust, and flavorful plants, resulting in powder. The plant raw material is the core source of flavor. Endogenous substances in the plant raw material can produce a physiological sense of satisfaction in the user. Endogenous substances, such as alkaloids, enter the human bloodstream and stimulate the pituitary gland to produce dopamine, thereby achieving a physiological sense of satisfaction.

[0111] In one embodiment, the auxiliary agent raw material can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant material and also have micropores, which can increase the porosity of the aerosol-generating matrix segment 1, thereby improving the aerosol release rate.

[0112] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase the fluidity of the plant material powder, reduce friction between the plant material powders, and make the overall density of the plant material powder distribution more uniform. They can also reduce the pressure required during the extrusion process and reduce wear on the die.

[0113] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to a certain extent, slow down the loss of flavor substances during storage, increase the stability of flavor substances, and improve the sensory quality of the product.

[0114] In one embodiment, the smoke-generating agent raw material may include: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, glycerol, triethylene glycol, 1,3-butylene glycol and tetraethylene glycol); an ester of a polyhydric alcohol (such as triacetin, triethyl citrate, a mixture of diacetin esters, triethyl citrate, benzyl benzoate, tributyrin); a monocarboxylic acid; a dicarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triactin, meso-erythritol, a mixture of diacetin esters, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, lauryl acetate) or one or more combinations thereof.

[0115] In one embodiment, the binder material wets the interface of the component materials, resulting in close contact and intermolecular attraction, thereby bonding the component materials, such as powders and liquids. The binder material can be a natural plant extract, a non-ionically modified viscous polysaccharide, or a combination thereof, including tamarind polysaccharide, guar gum, and modified cellulose (e.g., carboxymethyl cellulose). The binder serves to bond the particles together, preventing them from loosening. Furthermore, it improves the water resistance of the aerosol-generating matrix segment 1 and is harmless to the human body.

[0116] In one embodiment, the flavoring raw materials are solid or liquid substances used to provide characteristic aromas, such as hay, roasted sweet, or nicotine. The flavoring raw materials may include one or more combinations of tobacco, aromatic plant extracts, extracts, essential oils, and absolutes. The flavoring raw materials may also include monomeric flavoring substances, such as one or more combinations of megastigmatrienone, neophytadiene, geraniol, and nerol.

[0117] In the description of the present disclosure, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present disclosure and the features of different embodiments or examples, unless they are mutually inconsistent.

[0118] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure are intended to be within the scope of protection of the present disclosure.

Claims

1. An aerosol generating article comprising: Aerosol generating matrix segment; The functional section is arranged at one end of the aerosol generating matrix section along the longitudinal direction, and the functional section includes a storage section, the storage section forms a storage cavity, and the two end faces of the storage section along the longitudinal direction are respectively formed with entry and exit holes, and the entry and exit holes are connected to the storage cavity.

2. An aerosol-generating article according to claim 1, wherein At least one end surface of the storage section along the longitudinal direction is a curved surface convex toward a direction away from the storage cavity.

3. The aerosol-generating article of claim 1 , wherein: The aerosol generating product comprises a wrapping layer, the periphery of the aerosol generating substrate segment and the periphery of the functional segment are both wrapped with the wrapping layer, and the wrapping layer is formed with air inlet holes at a position corresponding to the storage segment.

4. An aerosol-generating article according to claim 3, wherein Part of the outer peripheral surface of the storage section is divided into an abutment portion and a spacing portion, the spacing portion is located on one side of the abutment portion close to the aerosol generating matrix section in the longitudinal direction, the abutment portion is annular and abuts against the wrapping layer, the spacing portion and the wrapping layer are spaced from each other to form a accommodating space, and the air inlet is located at the accommodating space to communicate with the accommodating space.

5. An aerosol-generating article according to claim 4, wherein The storage section includes a cover body and a cavity, wherein the cavity has an open mouth at one end longitudinally away from the aerosol generating substrate section, and the cover body closes the open mouth to jointly define the storage cavity, and the cover body and the cavity are both provided with the entry and exit holes on their longitudinal end faces, at least part of the outer circumference of the cover body is the abutment portion, and at least part of the outer circumference of the cavity is the spacing portion, and the lateral dimension of the portion of the cover body forming the abutment portion is larger than the lateral dimension of the cavity.

6. An aerosol-generating article according to claim 4, wherein The storage section includes a cylindrical shell and two end plates. Both ends of the cylindrical shell in the longitudinal direction have open openings. The two end plates respectively close the two open openings to form the storage cavity. The two end plates are both arc-shaped structures protruding away from the cylindrical shell. The end plates are formed with the entry and exit holes. The outer peripheral surface of the cylindrical shell is the abutment portion, and the outer peripheral surface of the end plate close to the aerosol generating matrix section is the spacing portion.

7. An aerosol-generating article according to claim 3, wherein: The distance between the air inlet hole and the end surface of the aerosol generating substrate segment away from the functional segment is 17 mm to 24.5 mm.

8. The aerosol-generating article of claim 1, wherein: The functional section includes a filtering section, and the filtering section is located at one end of the storage section away from the aerosol generating matrix section in the longitudinal direction. The aerosol generating matrix section and the filtering section are both cylindrical structures, and the storage section is a rotating body structure. The aerosol generating matrix section, the filtering section and the storage section are coaxially arranged, and the longitudinal direction is the central axis direction of the aerosol generating matrix section, the filtering section and the storage section or a direction parallel to the central axis.

9. An aerosol-generating article according to claim 3, wherein: The two air inlet holes form an air inlet group, and the two air inlet holes of the air inlet group are arranged along a straight line perpendicular to the longitudinal direction.

10. An aerosol-generating article according to claim 3, wherein The functional section comprises a filtering section, wherein the filtering section is located at one end of the storage section away from the aerosol generating substrate section in the longitudinal direction, and the storage section is in contact with or spaced from the filtering section at an end surface close to the filtering section in the longitudinal direction.

11. An aerosol-generating article according to claim 1 , wherein: The storage section is in contact with or spaced from the aerosol-generating substrate section along the longitudinal direction near the end surface of the aerosol-generating substrate section.

12. The aerosol-generating article of claim 1, wherein: The aerosol-generating substrate segment is formed with an air channel, and the air channel penetrates at least one end surface of the aerosol-generating substrate segment in the longitudinal direction.

13. An aerosol-generating article according to claim 12, wherein The area of ​​the flow cross section of the air passage is equal to the area of ​​the flow cross section of the inlet and outlet holes.

14. An aerosol-generating article according to claim 1, wherein The storage cavity is provided with a flavoring substance.

15. An aerosol-generating article according to claim 1, wherein The number of access holes on at least one end surface of the storage section along the longitudinal direction is greater than 2 and less than 100.

16. An aerosol-generating article according to claim 1, wherein The hydraulic diameter of the inlet and outlet holes is 0.1 mm to 2 mm; and / or, The roughness of the cavity wall of the storage cavity is no greater than 5 μm.

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