Aerosol generating product

Abstract

The invention relates to the technical field of aerosol generation, and provides an aerosol generation product which is provided with a far lip end and a near lip end, the aerosol generation product comprises an aerosol generation matrix section, a return stopping section and a wrapping layer, at least one end of the aerosol generation matrix section is provided with the return stopping section, and the return stopping section enables airflow to flow from the far lip end to the near lip end in a one-way mode; the wrapping layer wraps the periphery of the aerosol generating matrix section and the periphery of the check section. The probability that aerosol generated by the aerosol generation matrix section overflows to the heating cavity can be reduced through the return section, the utilization rate of the aerosol is improved, the possibility that the heating cavity is polluted is reduced, and the frequency of cleaning the heating cavity by a user is reduced; in addition, heat exchange between aerosol and cold air in the heating cavity in the suction gap can be reduced, energy loss in the using process is reduced, the endurance time is prolonged, and the effective using frequency is increased.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and particularly to an aerosol generation article. Background Art

[0002] This section aims to provide background or context for the embodiments of the present application. The descriptions herein are not admitted to be prior art merely because they are included in this section.

[0003] An aerosol generation article includes an aerosol generation matrix segment. The aerosol generation matrix segment forms an aerosol by a non-combustion heating method. Specifically, the aerosol generation matrix segment is accommodated in an aerosol generation device and is heated by a heating element so that the aerosol generation matrix segment is just heated to a degree sufficient to emit an aerosol, and the aerosol generation matrix segment does not burn.

[0004] In the related art, the aerosol released by the aerosol generation article is likely to overflow into the heating chamber, thereby contaminating the heating chamber. Summary of the Invention

[0005] In view of this, embodiments of the present application are expected to provide an aerosol generation article to reduce the probability of aerosol overflow.

[0006] To achieve the above object, embodiments of the present application provide an aerosol generation article having a distal lip end and a proximal lip end, including:

[0007] An aerosol generation matrix segment;

[0008] A backstop segment, the backstop segment is provided at at least one end of the aerosol generation matrix segment, and the backstop segment enables the air flow to flow unidirectionally from the distal lip end to the proximal lip end;

[0009] A wrapping layer, the wrapping layer wraps the outer periphery of the aerosol generation matrix segment and the outer periphery of the backstop segment.

[0010] In some embodiments, the backstop segment includes a housing and a valve body. The wrapping layer wraps the outer periphery of the housing. The housing is formed with a flow-through channel, and the valve body is disposed in the flow-through channel. The air flow from the distal lip end drives the valve body to unidirectionally open the flow-through channel.

[0011] In some embodiments, the valve body includes a limiting portion and a deformable portion. The deformable portion is formed with an elastic opening. The limiting portion surrounds the outer periphery of the deformable portion, and the limiting portion is connected to the wall surface of the flow-through channel; the elastic opening remains closed in the natural state; the air flow from the distal lip end can drive the elastic opening to open.

[0012] In some embodiments, the overcurrent channel includes an air flow inlet and a partition cavity communicating with the air flow inlet. The limiting portion is connected to the peripheral portion of the air flow inlet, and the cavity wall surface of the partition cavity is used to limit the deformation stroke of the deformable portion.

[0013] In some embodiments, the cross-sectional area of the overcurrent of the partition cavity gradually decreases from the far lip end to the near lip end.

[0014] In some embodiments, the return stop section includes a stop member disposed at the air flow inlet and located at the far lip end of the deformable portion.

[0015] In some embodiments, the housing includes a partition portion and a support plate. The partition cavity is formed within the partition portion. Openings communicating with the partition cavity are formed at both the far lip end and the near lip end of the partition portion. The support plate is located at the opening at the far lip end of the partition portion, and the support plate forms the air flow inlet.

[0016] In some embodiments, the return stop section includes a converging pipe. A converging channel is formed within the converging pipe, and the converging channel communicates with the near lip end of the overcurrent channel.

[0017] In some embodiments, the return stop section includes an accelerating pipe. An accelerating channel is formed within the accelerating pipe, and the accelerating channel communicates with the far lip end of the overcurrent channel. The cross-sectional area of the overcurrent at any position in the accelerating channel is not greater than the minimum cross-sectional area of the overcurrent channel.

[0018] In some embodiments, the valve body abuts against the wall surface of the overcurrent channel in the natural state to close the overcurrent channel, and the air flow from the far lip end can drive the valve body to move towards the near lip end to open the overcurrent channel.

[0019] In some embodiments, the valve body includes a main body portion and a sealing portion. The main body portion is connected to the near lip end of the sealing portion, and a support surface perpendicular to the first direction is formed at the connection between the main body portion and the sealing portion. When the valve body is in the natural state, at least one of the support surface and the circumferential surface of the sealing portion abuts against the wall surface of the overcurrent channel.

[0020] In some embodiments, the overcurrent channel includes a contraction cavity. The cross-sectional area of the overcurrent of the contraction cavity gradually decreases from the near lip end to the far lip end. Taking a plane perpendicular to the first direction as the cross-section, the cross-sectional area of the sealing portion gradually decreases from the near lip end to the far lip end. When the valve body is in the natural state, the circumferential surface of the sealing portion abuts against the wall surface of the contraction cavity.

[0021] In some embodiments, an air vent groove is formed on the circumferential surface of the main body portion and penetrates at least one end face along the first direction.

[0022] In some embodiments, the main body portion includes a cylindrical sub-portion and a connecting sub-portion. The cylindrical sub-portion is located at an end of the connecting sub-portion away from the sealing portion. The connecting sub-portion connects the cylindrical sub-portion and the sealing portion. The end face of the connecting sub-portion facing the sealing portion is the supporting surface. Taking a plane perpendicular to the first direction as the cross-section, the cross-sectional area of the connecting sub-portion gradually decreases from the near lip end to the far lip end.

[0023] In some embodiments, the housing is formed with a stopping portion, and at least a part of the stopping portion is disposed in the flow-through channel and located at the near lip end of the valve body. When the valve body is in the natural state, the stopping portion is spaced apart from the valve body. The stopping portion is used to limit the movement stroke of the valve body moving towards the near lip end.

[0024] In some embodiments, the backstop section is in contact with or spaced apart from the aerosol-forming substrate section.

[0025] In some embodiments, the aerosol-generating article includes a functional section, the functional section is disposed at the near lip end of the aerosol-forming substrate section, and the wrapping layer wraps the outer periphery of the functional section around the first direction.

[0026] In some embodiments, the backstop section is located between the aerosol-forming substrate section and the functional section; or,

[0027] the aerosol-forming substrate section is located between the functional section and the backstop section; or,

[0028] the functional section includes a plurality of sub-sections arranged along the first direction, and the backstop section is located between two of the sub-sections.

[0029] In some embodiments, the wrapping layer has an air inlet, and the air inlet is located at the near lip end of the aerosol-forming substrate section.

[0030] In some embodiments, the aerosol-forming substrate section is formed with an air passage, and the air passage penetrates at least one end face of the aerosol-forming substrate section along the first direction.

[0031] The aerosol-generating article provided by the embodiment of the present application is provided with a check section at one end of the aerosol-generating matrix section. The check section can restrict the unidirectional flow of air from the distal lip end to the proximal lip end. That is to say, the air flow can only flow through the check section from the distal lip end to the proximal lip end, and cannot flow through the check section from the proximal lip end to the distal lip end. In this way, the check section can prevent the aerosol from flowing back towards the distal lip end, improve the utilization rate of the aerosol, thereby reducing the probability of the aerosol overflowing into the heating chamber, reducing the possibility of the heating chamber being contaminated, and reducing the frequency of the user cleaning the heating chamber; in addition, it can also reduce the heat exchange between the aerosol and the cold air in the heating chamber during the suction gap, reduce the energy loss during use, and improve the battery life and the effective number of uses. On the other hand, the check section can also eliminate the suction differences of different users to a certain extent and improve the suction experience of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. is a schematic structural diagram of a first aerosol-generating article in an embodiment of the present application, wherein the dotted arrow schematically shows the flow direction of the air flow from the distal lip end, and shows the first check section;

[0033] Figure 2 FIG. is a schematic structural diagram of a second aerosol-generating article in an embodiment of the present application, wherein the dotted arrow schematically shows the flow direction of the air flow from the distal lip end, and shows the first check section;

[0034] Figure 3 FIG. is a schematic structural diagram of a third aerosol-generating article in an embodiment of the present application, wherein the dotted arrow schematically shows the flow direction of the air flow from the distal lip end, and shows the second check section;

[0035] Figure 4 FIG. is a schematic structural diagram of a first check section in an embodiment of the present application;

[0036] Figure 5 is Figure 4 a cross-sectional view schematic diagram of the first check section shown;

[0037] Figure 6 is Figure 4 a schematic structural diagram of the valve body in;

[0038] Figure 7 is Figure 4 a schematic structural diagram of the housing and the stopper in;

[0039] Figure 8 FIG. is a schematic structural diagram of a third check section in an embodiment of the present application;

[0040] Figure 9 is Figure 8Schematic structural diagram of another perspective of the third stop section shown;

[0041] Figure 10 For Figure 8 Schematic cross-sectional view of the third stop section shown.

[0042] Description of reference numerals

[0043] Aerosol generation matrix section 1; airway 1a;

[0044] Stop section 2; housing 21; flow-through channel 21a; partition portion 211; support plate 212; stop portion 2101; valve body 22; stopper 23; rib 231; converging pipe 24; converging channel 24a; speed-up pipe 25; speed-up channel 25a; limiting portion 221; deforming portion 222; elastic orifice 222a; air flow inlet 21aa; partition cavity 21ab; main body portion 2201; support surface 2201a; ventilation groove 2201b; cylindrical sub-portion 22011; connecting sub-portion 22012; sealing portion 2202; contraction cavity 21ac;

[0045] Wrapping layer 3; air inlet 3a;

[0046] Functional section 4; filtering section 41; cooling section 42; support section 43. Detailed implementation manners

[0047] It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. The detailed description in the detailed implementation manners should be understood as an explanatory illustration of the gist of the present application and should not be regarded as an improper limitation to the present application.

[0048] In the present application, "a plurality" includes two and more than two. "Multiple layers" includes two layers and more than two layers.

[0049] Please refer to Figure 1 , the aerosol generation article can be used in cooperation with an aerosol generation device having a heating element. The aerosol generation article is used for a user to inhale the aerosol generated by the aerosol generation matrix section 1. Exemplarily, the proximal lip end of the aerosol generation article faces the user, and when the user inhales, a suction negative pressure is generated. The aerosol generated by the aerosol generation matrix section 1 flows from the distal lip end to the proximal lip end under the action of the suction negative pressure.

[0050] It should be noted that, please refer to Figure 1 , the proximal lip end and the distal lip end are two opposite ends in the first direction. Among them, the proximal lip end is the end close to the user's lips along the first direction, and the distal lip end is the end far from the user's lips along the first direction. The circumferential direction is the direction surrounding the straight line extending along the first direction.

[0051] The aerosol generating device provided by the embodiment of the present application is used for the aerosol generating article in any embodiment of the present application. The aerosol generating device includes a heating element, and the heating element is used to heat the aerosol generating matrix section 1 to generate aerosol.

[0052] The heating methods of the heating element include but are not limited to resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating, etc. The heat generated by the heating element can be transferred to the aerosol generating matrix section 1 in forms such as heat convection, heat conduction or heat radiation. Transferring heat in the form of heat convection means that the heating element does not contact the aerosol generating matrix section 1. The heating element first heats the air, and then the hot air bakes and heats the aerosol generating matrix section 1. Heat conduction means that the heating element contacts the aerosol generating matrix section 1 or the wrapping layer 3 that wraps the aerosol generating matrix section 1 and conducts heat to the aerosol generating matrix section 1. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol generating matrix section 1 in the form of heat conduction or heat convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol generating matrix section 1 in the form of heat radiation. The heating element can heat the aerosol generating matrix section 1 in one or more of the three forms of heat conduction, heat convection and heat radiation.

[0053] The heating methods of the heating element include central heating, circumferential heating and / or bottom heating. The central heating method means that the heating element is inserted into the aerosol generating matrix section 1 to bake and heat the aerosol generating matrix section 1 from the inside to the outside. The circumferential heating method means that the heating element is arranged on the outer periphery of the aerosol generating matrix section 1 to bake and heat the aerosol generating matrix section 1 from the outside to the inside. The bottom heating method means that the heating element is located below the aerosol generating article. The heating element first heats the air, and then the hot air bakes and heats the aerosol generating matrix section 1 from the bottom up.

[0054] Exemplarily, the aerosol generating device is a portable aerosol generating device. For example, the aerosol generating device can be a handheld aerosol generating device. The contour shape of the aerosol generating device can be generally strip-shaped. In this way, it is convenient for the user to hold the aerosol generating device by hand.

[0055] In the related art, the aerosol generating article is accommodated in the heating cavity of the aerosol generating device. During the suction process, a low-pressure area is formed between the aerosol generating article and the heating cavity, resulting in the aerosol generated by the aerosol generating article flowing back into the heating cavity to form condensate after the suction ends and polluting the heating cavity, and also resulting in a decrease in the aerosol utilization rate.

[0056] Please refer to Figures 1 to 3 , the aerosol generating article provided by the embodiment of the present application includes an aerosol generating matrix section 1, a check section 2 and a wrapping layer 3.

[0057] In the embodiments of the present application, the aerosol - generating matrix section 1 is used to generate aerosol by heating. Exemplarily, the aerosol - generating matrix section 1 can be applicable to generate aerosol in a non - combustible heating manner. That is to say, the aerosol - generating matrix section 1 is heated below the ignition point to generate aerosol. The aerosol - generating matrix section 1 does not burn during the process of generating aerosol.

[0058] Please continue to refer to Figures 1 to 3 , at least one end of the aerosol - generating matrix section 1 is provided with a check section 2, and the check section 2 enables the air flow to flow unidirectionally from the distal lip end to the proximal lip end. Exemplarily, at least one end of the aerosol - generating matrix section 1 along the first direction is provided with a check section 2.

[0059] The wrapping layer 3 wraps the outer periphery of the aerosol - generating matrix section 1 and the outer periphery of the check section 2. On the one hand, the wrapping layer 3 makes the aerosol - generating matrix section 1 and the check section 2 form an integral body, so as to facilitate the taking of the aerosol - generating article; on the other hand, the wrapping layer 3 can restrict the flow of aerosol within the wrapping layer 3 and reduce the scattering of aerosol to the surroundings.

[0060] For the aerosol - generating article provided by the embodiments of the present application, a check section 2 is provided at least one end of the aerosol - generating matrix section 1. The check section 2 can restrict the air flow to flow unidirectionally from the distal lip end to the proximal lip end. That is to say, the air flow can only flow through the check section 2 from the distal lip end to the proximal lip end, and cannot flow through the check section 2 from the proximal lip end to the distal lip end. In this way, the check section 2 can prevent the aerosol from flowing back towards the distal lip end, improve the utilization rate of the aerosol, thereby reducing the probability of the aerosol overflowing into the heating chamber, reducing the possibility of the heating chamber being contaminated, and reducing the frequency of the user cleaning the heating chamber; in addition, it can also reduce the heat exchange between the aerosol and the cold air in the heating chamber during the suction gap, reduce the energy loss during use, and improve the battery life and the effective number of uses. On the other hand, the check section 2 can also eliminate the suction differences of different users to a certain extent and enhance the suction experience of consumers.

[0061] Exemplarily, in one embodiment, the wrapping layer 3 can be one layer or multiple layers.

[0062] Exemplarily, in one embodiment, with the plane perpendicular to the first direction as the projection plane, the projection contour shape of the aerosol - generating matrix section 1 is circular, elliptical or polygonal. The polygon includes but is not limited to square, rectangle, pentagon, hexagon or octagon, etc. That is to say, the aerosol - generating matrix section 1 can be in the shape of a cylinder, a cuboid or a prism, etc.

[0063] It should be noted that in the present application, with the plane perpendicular to the first direction as the projection plane, the projection contour shape of the aerosol - generating matrix section 1 refers to the outer contour shape of the projection of the aerosol - generating matrix section 1.

[0064] In an embodiment of the present application, the first direction is the direction in which the aerosol-generating article is inserted into and removed from the aerosol-generating device. The length of the aerosol-generating substrate section 1 in the first direction may be longer, shorter, or the same as the lengths in other directions.

[0065] For example, when the external shape of the aerosol-generating substrate section 1 is cylindrical, the first direction is consistent with the axial direction of the cylindrical aerosol-generating substrate section 1. It should be noted that even if the axial length of the aerosol-generating substrate section 1 is less than its diameter, the first direction of the aerosol-generating substrate section 1 is still the axial direction. For another example, when the external shape of the aerosol-generating substrate section 1 is a cuboid, the first direction is still the direction in which the aerosol-generating article is inserted into and removed from the aerosol-generating device, and the first direction of the aerosol-generating substrate section 1 can be any one of the length, width, and height of the cuboid.

[0066] In one embodiment, please refer to Figures 4 to 10 , the check section 2 includes a housing 21 and a valve body 22. The wrapping layer 3 wraps the outer periphery of the housing 21. The housing 21 is formed with a flow-through channel 21a. The valve body 22 is disposed in the flow-through channel 21a. The airflow from the distal lip end drives the valve body 22 to unidirectionally open the flow-through channel 21a.

[0067] In this embodiment, the wrapping layer 3 wraps the outer periphery of the housing 21, so that the airflow cannot flow between the wrapping layer 3 and the housing 21. The wrapping layer 3 can also play a role in fixing the check section 2. For example, the housing 21 and the aerosol-generating substrate section 1 are fixedly connected by coiling through the wrapping layer 3. The acting force generated by the airflow from the distal lip end drives the valve body 22 to unidirectionally open the flow-through channel 21a, and the airflow from the distal lip end can flow through the flow-through channel 21a; while the airflow from the proximal lip end cannot drive the valve body 22 to open the flow-through channel 21a. In this way, the unidirectional flow of the airflow from the distal lip end to the proximal lip end is realized. Using the acting force generated by the flow of the airflow at the distal lip end to drive the valve body 22 to act can simplify the overall structure.

[0068] The housing 21 can be made of one or more materials such as PE (polyethylene), ABS (acrylonitrile butadiene styrene, a terpolymer of three monomers of acrylonitrile, butadiene, and styrene), PLA (polylactic acid), PEEK (polyether ether ketone), silica gel, cellulose acetate, PET (polyethylene terephthalate), etc.

[0069] In one embodiment, please refer to Figures 4 to 6, the valve body 22 includes a limiting portion 221 and a deformable portion 222. An elastic opening 222a is formed in the deformable portion 222. The limiting portion 221 surrounds the outer periphery of the deformable portion 222, and the limiting portion 221 is connected to the wall surface of the flow-through channel 21a. For example, the limiting portion 221 is sealingly connected to the wall surface of the flow-through channel 21a. The elastic opening 222a remains closed in its natural state; the airflow from the distal lip end can drive the elastic opening 222a to open. That is to say, the elastic opening 222a remains closed in its natural state to block the flow-through channel 21a; the airflow from the distal lip end can drive the elastic opening 222a to open to open the flow-through channel 21a.

[0070] The elastic opening 222a being in its natural state means the state where the deformable portion 222 is not subjected to the acting force of the airflow. In this way, the elastic opening 222a being in its natural state is the state where no deformation occurs. The limiting portion 221 is sealingly connected to the wall surface of the flow-through channel 21a, so that the airflow can only flow through the elastic opening 222a and cannot flow between the limiting portion 221 and the flow-through channel 21a. When the elastic opening 222a is not subjected to the airflow, the elastic opening 222a remains closed in its natural state. At this time, the valve body 22 blocks the flow-through channel 21a, and the airflow cannot flow through the flow-through channel 21a. When the elastic opening 222a is subjected to the airflow from the distal lip end, the airflow from the distal lip end can drive the elastic opening 222a to open, and the airflow from the distal lip end can flow through the opened elastic opening 222a. Therefore, by utilizing the self-characteristics of the deformable portion 222 to achieve the closing or opening of the elastic opening 222a, the structure is simple.

[0071] The limiting portion 221 and the wall surface of the flow-through channel 21a can be connected by bonding or other means.

[0072] The number of the elastic openings 222a is not limited, and the number of the elastic openings 222a can be one or more. For example, multiple elastic openings 222a can be circumferentially spaced apart.

[0073] The valve body 22 can be an integrally formed structure. In this way, the assembly steps can be reduced.

[0074] The valve body 22 can be a flexible structure. In this way, the deformable portion 222 can undergo elastic deformation so that the elastic opening 222a can be repeatedly closed and opened. The flexible structure refers to a structure prepared from a flexible material. The flexible material refers to a material that can produce elastic deformations such as bending, folding, twisting, compressing, and / or stretching.

[0075] In some embodiments, the flexible material includes but is not limited to flexible plastics, flexible rubbers, and / or flexible silicones, etc.

[0076] In some embodiments, the opening air pressure of the elastic port 222a can be adjusted by adjusting the tension of the flexible material. For example, by adjusting the tension of the flexible material, the opening air pressure of the elastic port 222a can be controlled to be 50 Pa or 70 Pa (Pascal). That is, when the opening air pressure generated by the airflow from the distal lip end reaches 50 Pa or 70 Pa, the elastic port 222a opens.

[0077] In one embodiment, please refer to Figures 4 to 6 , the flow-through channel 21a includes an air inlet 21aa and a partition chamber 21ab communicating with the air inlet 21aa, and the limiting portion 221 is connected to the peripheral portion of the air inlet 21aa. The wall surface of the partition chamber 21ab is used to limit the deformation stroke of the deformable portion 222. For example, the limiting portion 221 is hermetically connected to the peripheral portion of the air inlet 21aa.

[0078] The deformation stroke of the deformable portion 222 can be greater than, less than, or equal to the maximum deformation amount of the deformable portion 222, that is, the maximum deformation degree. Taking the example where the deformation stroke of the deformable portion 222 is less than the maximum deformation amount of the deformable portion 222, during the deformation process of the deformable portion 222, if the deformation amount of the deformable portion 222 is less than the deformation stroke of the deformable portion 222, the wall surface of the partition chamber 21ab may not contact the deformed deformable portion 222; if the deformation amount of the deformable portion 222 continues to increase until it abuts against the wall surface of the partition chamber 21ab, the wall surface of the partition chamber 21ab will limit the further increase of the deformation of the deformable portion 222, thereby playing a role in limiting the deformation stroke of the deformable portion 222.

[0079] In this embodiment, the deformable portion 222 is aligned with the air inlet 21aa, and the airflow from the distal lip end contacts the deformable portion 222 through the air inlet 21aa and drives the deformable portion 222 to deform convexly away from the distal lip end; the wall surface of the partition chamber 21ab can abut against the deformed deformable portion 222 to limit the deformation degree of the deformable portion 222, thereby controlling the opening degree of the elastic port 222a.

[0080] In one embodiment, a part of the wall surface of the partition chamber 21ab is a restricted area, and the restricted area is used to abut against the deformed deformable portion 222. The greater the distance between the restricted area and the deformable portion 222 in the natural state, the greater the deformation degree of the deformable portion 222 is required to overcome this distance to abut against the restricted area; on the contrary, the smaller the distance between the restricted area and the deformable portion 222 in the natural state, the smaller the deformation degree of the deformable portion 222 is required to overcome this distance to abut against the restricted area. Therefore, the deformation degree of the deformable portion 222 can be adjusted by changing the distance between the restricted area and the deformable portion 222 in the natural state, thereby changing the opening degree of the elastic port 222a to facilitate adjusting the air flow rate and / or velocity, and thus adjusting the suction resistance.

[0081] In one embodiment, please refer toFigure 5 and Figure 6 Taking the plane perpendicular to the first direction as the projection plane, the projection of the deformation part 222 and the projection of the air flow inlet 21aa at least partially overlap. Preferably, the projection of the deformation part 222 and the projection of the air flow inlet 21aa completely coincide. In this way, the deformation part 222 is aligned with the air flow inlet 21aa.

[0082] In one embodiment, please refer to Figures 4 to 6 , the cross-sectional area of the flow-through cavity 21ab gradually decreases from the far lip end to the near lip end. In this way, it is convenient for the cavity wall surface of the flow-through cavity 21ab to abut against the deformed deformation part 222.

[0083] It should be noted that the cross-sectional area of the flow-through is the cross-section taken perpendicular to the streamline cluster of the fluid, such as the air flow.

[0084] In one embodiment, please refer to Figure 6 , the valve body 22 is in the shape of a flat plate. The elastic orifice 222a is a slit in the flat plate-shaped valve body 22. The deformation part 222 deforms, and the elastic orifice 222a in the form of a slit opens to allow the air flow to pass through.

[0085] In one embodiment, please refer to Figures 4 to 7 , the check section 2 includes a stop member 23, and the stop member 23 is arranged at the air flow inlet 21aa and is located at the far lip end of the deformation part 222. The stop member 23 restricts the deformation of the deformation part 222 towards the far lip end.

[0086] The shape of the stop member 23 is not limited. Exemplarily, in one embodiment, the stop member 23 is in the shape of a strip, and both ends of the strip-shaped stop bar are connected to the wall surface of the air flow inlet 21aa. In another embodiment, the stop member 23 is in the shape of a grid, and the grid-shaped stop member 23 covers the air flow inlet 21aa. The meshes of the grid-shaped stop member 23 can allow the air flow to pass through. In still another embodiment, please refer to Figure 7 , the stop member 23 includes a plurality of ribs 231 extending linearly, one ends of the plurality of ribs 231 are connected, and the other ends of the plurality of ribs 231 are connected to the surrounding part of the air flow inlet 21aa, and the gap between two ribs 231 is used for the air flow to pass through.

[0087] Exemplarily, in one embodiment, please refer to Figures 4 to 6 , the housing 21 includes a partition portion 211 and a support plate 212. A flow-through cavity 21ab is formed in the partition portion 211. Openings communicating with the flow-through cavity 21ab are formed at both the far lip end and the near lip end of the partition portion 211. The support plate 212 is located at the opening at the far lip end of the partition portion 211, and the support plate 212 forms an air flow inlet 21aa. Exemplarily, the outer peripheral edge of the support plate 212 is connected to the circumferential surface of the opening at the far lip end of the partition portion 211. The air flow from the far lip end drives the elastic orifice 222a to open through the air flow inlet 21aa and enters the flow-through cavity 21ab, and then flows out through the opening at the near lip end of the partition portion 211.

[0088] In one embodiment, please refer to Figures 4 to 5 , taking the plane perpendicular to the first direction as the cross-section, the cross-sectional area of the partition portion 211 gradually decreases from the distal lip end to the proximal lip end. That is to say, the partition portion 211 is in the shape of a frustum of a cone that gradually decreases from the distal lip end to the proximal lip end. The partition portion 211 has a hollow structure, and the internal space surrounded by the partition portion 211 is the partition cavity 21ab. The partition portion 211 defines a partition cavity 21ab whose cross-sectional area gradually decreases from the distal lip end to the proximal lip end.

[0089] In one embodiment, please refer to Figure 4 and Figure 5 , the backstop section 2 includes a converging pipe 24. A converging channel 24a is formed in the converging pipe 24, and the converging channel 24a communicates with the proximal lip end of the flow-through channel 21a. The converging channel 24a can play a role in converging the airflow. For example, the user inhales the aerosol in a puff-by-puff manner, that is, the user inhales the aerosol in one puff, pauses the inhalation, and then inhales the next puff of aerosol; during the intermittent time of pausing the inhalation, the aerosol from the proximal lip end can be temporarily stored in the converging channel 24a. When inhaling the next puff, the airflow from the distal lip end carries the aerosol in the converging channel 24a and is inhaled by the user together, so as to ensure the amount of aerosol inhaled in each puff and improve the inhalation experience.

[0090] In one embodiment, please refer to Figure 4 and Figure 5 , the cross-sectional area of any position in the converging channel 24a is not greater than the maximum cross-sectional area of the flow-through channel 21a. In this way, when the airflow from the distal lip end flows through the converging channel 24a, the cross-sectional area of the converging channel 24a is relatively small, and the airflow is accelerated, which can improve the airflow rate.

[0091] In one embodiment, please refer to Figure 4 and Figure 5 , the cross-sectional areas of any two positions in the converging channel 24a are equal. For example, the converging pipe 24 has a hollow structure, and the internal space surrounded by the converging pipe 24 is the converging channel 24a. That is to say, the converging channel 24a is an equal-diameter channel. The converging pipe 24 can be an equal-diameter pipe.

[0092] In one embodiment, please refer to Figure 4 and Figure 5 , the cross-sectional area of any position in the converging channel 24a is equal to the area of the airflow inlet 21aa.

[0093] In one embodiment, please refer to Figure 4 , Figure 5 and Figure 9, the backstop section 2 includes an acceleration tube 25. An acceleration channel 25a is formed inside the acceleration tube 25. The acceleration channel 25a communicates with the far lip end of the flow-through channel 21a. The cross-sectional area of the flow-through section at any position in the acceleration channel 25a is not greater than the minimum cross-sectional area of the flow-through channel 21a. In this way, when the air flow from the far lip end flows through the acceleration channel 25a, the cross-sectional area of the flow-through section of the acceleration channel 25a is relatively small, and the air flow rate is relatively fast, so as to drive the valve body 22 to move with the air flow from the far lip end, effectively adjusting the suction resistance.

[0094] In one embodiment, please refer to Figure 4 , Figure 5 and Figure 9 , the cross-sectional areas of the flow-through sections at any two positions in the acceleration channel 25a are equal. For example, the acceleration tube 25 has a hollow structure, and the internal space surrounded by the acceleration tube 25 is the acceleration channel 25a. That is to say, the acceleration channel 25a is an equal-diameter channel. The acceleration tube 25 can be an equal-diameter tube.

[0095] In one embodiment, please refer to Figure 4 , Figure 5 and Figure 9 , the cross-sectional area of the flow-through section at any position in the acceleration channel 25a can be equal to the area of the air inlet 21aa.

[0096] In one embodiment, please refer to Figures 8 to 10 , the valve body 22 abuts against the wall surface of the flow-through channel 21a in the natural state to close the flow-through channel 21a, and the air flow from the far lip end can drive the valve body 22 to move towards the near lip end to open the flow-through channel 21a. For example, the valve body 22 abuts against the wall surface of the flow-through channel 21a in a sealed manner in the natural state to close the flow-through channel 21a. The natural state of the valve body 22 means the state where the valve body 22 is not affected by the air flow force. When the valve body 22 is in the natural state and not affected by the air flow, the valve body 22 abuts against the wall surface of the flow-through channel 21a. At this time, the valve body 22 closes the flow-through channel 21a, and the air flow cannot flow through the flow-through channel 21a. When the valve body 22 is affected by the air flow from the far lip end, the air flow from the far lip end can drive the valve body 22 to move, and a flow-through gap is generated between the valve body 22 and the wall surface of the flow-through channel 21a. The air flow from the far lip end can flow through the flow-through gap between the valve body 22 and the wall surface of the flow-through channel 21a, and the structure is simple.

[0097] In one embodiment, please refer to Figures 8 to 10, the valve body 22 includes a main body portion 2201 and a sealing portion 2202. The main body portion 2201 is connected to the near-lip end of the sealing portion 2202. A support surface 2201a perpendicular to the first direction is formed at the connection between the main body portion 2201 and the sealing portion 2202. When the valve body 22 is in the natural state, at least one of the support surface 2201a and the circumferential surface of the sealing portion 2202 abuts against the wall surface of the flow passage 21a. For example, when the valve body 22 is in the natural state, at least one of the support surface 2201a and the circumferential surface of the sealing portion 2202 abuts against the wall surface of the flow passage 21a. For example, when the valve body 22 is in the natural state, only the support surface 2201a abuts against the wall surface of the flow passage 21a. Another example is that when the valve body 22 is in the natural state, only the circumferential surface of the sealing portion 2202 abuts against the wall surface of the flow passage 21a. Still another example is that when the valve body 22 is in the natural state, both the support surface 2201a and the circumferential surface of the sealing portion 2202 abut against the wall surface of the flow passage 21a. During the suction process, the airflow from the far-lip end drives the valve body 22 to move towards the near-lip end, and the support surface 2201a and the circumferential surface of the sealing portion 2202 no longer abut against the wall surface of the flow passage 21a, and a flow gap is generated between the support surface 2201a and the circumferential surface of the sealing portion 2202 and the wall surface of the flow passage 21a.

[0098] In one embodiment, please refer to Figures 8 to 10 , the flow passage 21a includes a contraction cavity 21ac. The cross-sectional area of the flow passage of the contraction cavity 21ac gradually decreases from the near-lip end to the far-lip end. Taking a plane perpendicular to the first direction as the cross-section, the cross-sectional area of the sealing portion 2202 gradually decreases from the near-lip end to the far-lip end. When the valve body 22 is in the natural state, the circumferential surface of the sealing portion 2202 abuts against the wall surface of the contraction cavity 21ac. For example, when the valve body 22 is in the natural state, the circumferential surface of the sealing portion 2202 is in sealing contact with the wall surface of the contraction cavity 21ac. That is to say, the sealing portion 2202 is in the shape of a truncated cone that gradually decreases from the near-lip end to the far-lip end. During suction, the airflow from the far-lip end drives the valve body 22 to move towards the near-lip end, and the sealing portion 2202 is misaligned with the contraction cavity 21ac, so that a flow gap is generated between the sealing portion 2202 and the contraction cavity 21ac. During the suction gap, the valve body 22 falls back under the action of gravity, and the circumferential surface of the sealing portion 2202 is in sealing contact with the wall surface of the contraction cavity 21ac.

[0099] In some embodiments, the flow passage 21a includes a receiving cavity and a contraction cavity 21ac. The receiving cavity communicates with the near-lip end of the contraction cavity 21ac, and the valve body 22 can move in the receiving cavity.

[0100] In some embodiments, the opening air pressure for the valve body 22 to move towards the near lip end can be adjusted by adjusting the weight of the valve body 22. For example, by adjusting the weight of the valve body 22, the opening air pressure of the valve body 22 can be controlled to be 50 Pa or 200 Pa (Pascal). That is, when the opening air pressure generated by the air flow from the far lip end reaches 50 Pa or 200 Pa, the valve body 22 moves towards the near lip end.

[0101] The valve body 22 can be made of PE (polyethylene) material.

[0102] In one embodiment, please refer to Figures 8 to 10 , a stepped surface perpendicular to the first direction is formed in the flow-through channel 21a. The contraction cavity 21ac is connected to the far lip end of the stepped surface. The support surface 2201a is located at the near lip end of the stepped surface and is in sealing contact with the stepped surface. During suction, the air flow from the far lip end drives the valve body 22 to move towards the near lip end, and the support surface 2201a is spaced from the stepped surface, so that a flow-through gap is generated between the support surface 2201a and the stepped surface. During the suction gap, the valve body 22 falls back under the action of gravity, and the support surface 2201a is in sealing contact with the stepped surface.

[0103] In one embodiment, please refer to Figures 8 to 10 , an air vent groove 2201b is formed on the circumferential surface of the main body portion 2201 and penetrates at least one end surface along the first direction. The air vent groove 2201b is a groove-shaped structure that opens towards the radially outer side. The air flow from the far lip end can flow through the air vent groove 2201b, reducing the air flow resistance and thus reducing the suction resistance.

[0104] In one embodiment, the air vent groove 2201b penetrates one end surface of the main body portion 2201 along the first direction. In another embodiment, please refer to Figures 8 to 10 , the air vent groove 2201b penetrates two end surfaces of the main body portion 2201 along the first direction.

[0105] In one embodiment, please refer to Figures 8 to 10 , the main body portion 2201 includes a cylindrical sub-portion 22011 and a connecting sub-portion 22012. The cylindrical sub-portion 22011 is located at one end of the connecting sub-portion 22012 away from the sealing portion 2202. The connecting sub-portion 22012 connects the cylindrical sub-portion 22011 and the sealing portion 2202. The end surface of the connecting sub-portion 22012 facing the sealing portion 2202 is the support surface 2201a; with a plane perpendicular to the first direction as the cross-section, the cross-sectional area of the connecting sub-portion 22012 gradually decreases from the near lip end to the far lip end. That is, the connecting sub-portion 22012 is a truncated conical shape that gradually decreases from the near lip end to the far lip end. With such a design, the connecting sub-portion 22012 not only facilitates the sealing contact between the sealing portion 2202 and the wall surface of the flow-through channel 21a, such as the wall surface of the contraction cavity 21ac, but also can reduce the suction resistance.

[0106] In one embodiment, please refer toFigures 8 to 10 Taking the plane perpendicular to the first direction as the cross-section, the minimum cross-sectional area of the main body portion 2201 is not less than the maximum cross-sectional area of the sealing portion 2202. Exemplarily, the minimum cross-sectional area of the connecting sub-portion 22012 is not less than the maximum cross-sectional area of the sealing portion 2202, and the cross-sectional area of the cylindrical sub-portion 22011 is not less than the maximum cross-sectional area of the connecting sub-portion 22012. Thus, the valve body 22 can move towards the near lip end under the action of the airflow from the far lip end.

[0107] Exemplarily, in one embodiment, the ventilation groove 2201b penetrates through the end face of the near lip end of the cylindrical sub-portion 22011 and the supporting surface 2201a of the connecting sub-portion 22012. Exemplarily, the flow rate, flow velocity, etc. of the airflow can be adjusted by adjusting the area of the flow-through cross-section of the ventilation groove 2201b, thereby adjusting the suction resistance.

[0108] In one embodiment, please refer to Figure 8 and Figure 10 The housing 21 is formed with a stop portion 2101, and at least a part of the stop portion 2101 is disposed in the flow-through channel 21a and is located at the near lip end of the valve body 22; when the valve body 22 is in a natural state, the stop portion 2101 is spaced apart from the valve body 22. The stop portion 2101 is used to limit the movement stroke of the valve body 22 moving towards the near lip end.

[0109] For example, after the valve body 22 moves a preset stroke towards the near lip end, the stop portion 2101 abuts against the valve body 22. The preset stroke is the maximum stroke of the valve body 22 moving towards the near lip end. It can be understood that during the movement of the valve body 22 towards the near lip end, the actual stroke of the valve body 22 can be greater than, less than, or equal to the preset stroke. For example, if the actual stroke of the valve body 22 is less than the preset stroke, the valve body 22 does not contact the stop portion 210; the valve body 22 can continue to move towards the near lip end until the preset stroke, and then the valve body 22 abuts against the stop portion 2101 to limit the valve body 22 from continuing to move towards the near lip end.

[0110] In this embodiment, after the valve body 22 moves a preset stroke towards the near lip end, the stop portion 2101 abuts against the valve body 22 to limit the valve body 22 from continuing to move towards the near lip end, thereby limiting the movement stroke of the valve body 22. When the valve body 22 is in a natural state, there is a preset distance between the stop portion 2101 and the valve body 22, and the preset distance is the preset stroke of the valve body 22. For example, during suction, the airflow from the far lip end drives the valve body 22 to move towards the near lip end, and the valve body 22 moves a preset stroke. The blocking portion 211 abuts against the valve body 22 to limit the valve body 22 from continuing to move towards the near lip end. During the suction gap, the valve body 22 falls back under the action of gravity, and the valve body 22 abuts against the wall surface of the flow-through channel 21a to seal the flow-through channel 21a.

[0111] In one embodiment, please refer to Figure 8 and Figure 10, the distal lip end of the housing 21 is turned inward to form a stop portion 2101.

[0112] In one embodiment, the backstop section 2 is in contact with the aerosol-forming substrate section 1. In this way, the distance between the aerosol generated by the aerosol-forming substrate section 1 and the backstop section 2 is relatively close, so as to facilitate the extraction of the aerosol by the airflow from the distal lip end as soon as possible.

[0113] In one embodiment, please refer to Figures 1 to 3 , the backstop section 2 is spaced apart from the aerosol-forming substrate section 1. The space surrounded by the wrapping layer 3 between the backstop section 2 and the aerosol-forming substrate section 1 can be a cavity, and the cavity can be used to temporarily store the aerosol to increase the buffer capacity of the aerosol and provide an adequate source of aerosol for the extraction and release of the aerosol.

[0114] In one embodiment, please refer to Figures 1 to 3 , the aerosol-generating article includes a functional section 4, the functional section 4 is disposed at the proximal lip end of the aerosol-forming substrate section 1, and the wrapping layer 3 wraps the outer periphery of the functional section 4 in the first direction. The aerosol flows to the user after passing through the functional section 4. The backstop section 2 restricts the airflow to flow unidirectionally toward the side where the functional section 4 is located.

[0115] Exemplarily, in one embodiment, the wrapping layer 3 wraps around the outer peripheral surface of the functional section 4.

[0116] The functional section 4 provides at least one of the functions of aerosol aggregation, dilution, cooling, interception, and compensation.

[0117] In some embodiments, please refer to Figures 1 to 3 , the functional section 4 includes a filtering section 41, and the filtering section 41 is used for filtering the aerosol.

[0118] Exemplarily, the filtering section 41 can block substances with a target particle size and can also adjust the draw resistance. For example, the filtering section 41 can filter large-particle-size particles such as powdery substances. The aerosol filtered by the filtering section 41 has higher particle size consistency and a more delicate taste.

[0119] In some embodiments, please refer to Figures 1 to 3 , the functional section 4 includes a cooling section 42, and the cooling section 42 is used for lowering the temperature of the aerosol. In this way, the aerosol is made suitable for the user to inhale.

[0120] Exemplarily, in some embodiments, the cooling section 42 is located between the filtering section 41 and the aerosol-forming substrate section 1, and the cooling section 42 is used for cooling the aerosol before the filtering section 41 filters the aerosol. The cooling section 42 can further improve the "scalding" phenomenon when the user inhales the aerosol.

[0121] In some embodiments, please refer to Figures 1 to 3The functional section 4 includes a support section 43, which can withstand the temperature of the aerosol from the aerosol generating substrate section 1 and maintain the shape. The support section 43 plays a supporting role. Exemplarily, the support section 43 can be located between the filter section 41 and the aerosol generating substrate section 1.

[0122] For some examples, see Figures 1 to 3 The support section 43, the cooling section 42 and the filtering section 41 can be arranged sequentially from the far lip end to the near lip end. The aerosol generated by the aerosol generating matrix section 1 flows sequentially through the support section 43 and the cooling section 42 under the action of the suction negative pressure, and then is transported to the filtering section 41.

[0123] In one embodiment, please refer to Figure 3 , the check segment 2 is located between the aerosol generating matrix segment 1 and the functional segment 4. That is to say, the check segment 2 is located at the proximal lip end of the aerosol generating matrix segment 1. Since the check segment 2 limits the unidirectional flow of the airflow from the distal lip end to the proximal lip end, the aerosol can be reduced from overflowing from the functional segment 4 during the puffing interval. The aerosol generated by the aerosol generating matrix segment 1 will temporarily exist in the check segment 2. The check segment 2 can reduce the probability of the aerosol penetrating the wrapping layer 3, and can avoid the residual aerosol in the functional segment 4 from flowing back to the location of the aerosol matrix after the puffing is completed as much as possible, and can also increase the entertainment during the puffing process.

[0124] In one embodiment, please refer to Figure 1 and Figure 2 , the aerosol generating substrate segment 1 is located between the functional segment 4 and the check segment 2. That is, the check segment 2 is located at the distal lip end of the aerosol generating substrate segment 1. Since the check segment 2 restricts the unidirectional flow of the airflow from the distal lip end to the proximal lip end, the aerosol generated by the aerosol generating substrate segment 1 cannot flow toward the distal lip end through the check segment 2, thereby preventing the aerosol from flowing back into the heating chamber from the end surface of the distal lip end of the aerosol generating product.

[0125] In one embodiment, the functional segment 4 includes a plurality of sub-segments arranged along the first direction, and the check segment 2 is located between the two sub-segments. That is, the check segment 2 is located at the proximal lip end of the aerosol generating matrix segment 1. Since the check segment 2 restricts the airflow from the distal lip end to the proximal lip end in one direction, the aerosol generated by the aerosol generating matrix segment 1 will temporarily exist in the check segment 2. The check segment 2 can reduce the probability of the aerosol penetrating the wrapping layer 3, and can avoid the residual aerosol in the functional segment 4 from flowing back to the location of the aerosol matrix after the puffing is completed as much as possible, and can also increase the entertainment during the puffing process.

[0126] It can be understood that the sub-segments include but are not limited to the filtering segment 41, the cooling segment 42 or the supporting segment 43 and the like.

[0127] In one embodiment, please refer to Figure 2, the wrapper layer 3 has an air inlet 3a, and the air inlet 3a is located near the lip end of the aerosol - generating substrate section 1. Specifically, the air inlet 3a penetrates through the inner peripheral surface and the outer peripheral surface of the wrapper layer 3. The air inlet 3a is used to introduce external gas such as air into the wrapper layer 3. During suction, the external air flow can enter the wrapper layer 3 through the air inlet 3a, and the external air flow can also enter the wrapper layer 3 from the end face at the far lip end of the aerosol - generating article. Since the air inlet 3a is located near the lip end of the aerosol - generating substrate section 1, the air inlet 3a introduces the external air flow into the wrapper layer 3, causing the aerosol generated by the aerosol - generating substrate section 1 to mix with the external air from the air inlet 3a and be able to quickly flow towards the near lip end, such as the functional section 4, thereby improving the aerosol extraction efficiency and the aerosol release stability and enhancing the suction experience; it can also reduce the temperature of the aerosol through the mixing and contact of the external air flow and the aerosol.

[0128] Exemplarily, in some embodiments, please refer to Figure 2 , the wrapper layer 3 has an air inlet 3a, and the aerosol - generating substrate section 1 is located between the functional section 4 and the check section 2. When the user is sucking normally, the external air flow can mainly enter the wrapper layer 3 through the air inlet 3a to extract the aerosol; when the user performs a deep suction, that is, when increasing the suction force, due to the relatively large suction flow rate (suction force), the air intake volume of only the air inlet 3a cannot meet the demand, and the check section 2 opens, and the external air flow enters the wrapper layer 3 from the far lip end of the aerosol - generating article to supplement the air flow. Designed in this way, the aerosol precipitation stability is good, and different suction resistances can be generated for the user's normal suction and deep suction, bringing a new suction experience to the suction person.

[0129] Exemplarily, in one embodiment, please refer to Figure 2 , the air inlet 3a can be aligned with the location of the functional section 4. That is to say, the projection of the air inlet 3a on the aerosol - generating article is located at the location of the functional section 4. For example, the air inlet 3a is located at the location of the support section 43. In this way, the external air flow can effectively reduce the temperature of the aerosol flowing through the functional section 4, making the aerosol temperature suitable for entry into the mouth.

[0130] In one embodiment, please refer to Figures 1 to 3 , the aerosol - generating substrate section 1 is formed with an air passage 1a, and the air passage 1a penetrates through at least one end face of the aerosol - generating substrate section 1 along the first direction. For example, the air passage 1a penetrates through one end of the aerosol - generating substrate section 1 along the first direction. Or, for example, the air passage 1a penetrates through both ends of the aerosol - generating substrate section 1 along the first direction. The air flow can flow from one end of the aerosol - generating substrate section 1 along the air passage 1a to the other end of the aerosol - generating substrate section 1. The aerosol can flow more smoothly through the air passage 1a, the aerosol can be delivered orderly, the aerosol flow resistance is smaller, the controllability is good, effectively improving the aerosol extraction efficiency and enhancing the suction experience.

[0131] In one embodiment, the number of the air channels 1a can be one or more.

[0132] In one embodiment, the air channels 1a can be formed inside the aerosol-forming substrate section 1. The air channels 1a can be formed on the circumferential surface of the aerosol-forming substrate section 1.

[0133] In one embodiment, referring to Figures 1 to 3 , the air channels 1a can be straight air channels 1a extending linearly in a first direction. The straight air channels 1a are easy to form, which can reduce the manufacturing difficulty. The flow resistance of the air flow in the straight air channels 1a is relatively small.

[0134] In some embodiments, the air channels 1a are curved air channels 1a, and at least part of the hole segments of the curved air channels 1a are curved with a non-zero curvature. The curved air channels 1a can greatly increase the flow path of the air flow without significantly increasing the length of the aerosol-forming substrate section 1, and can extend the contact time of the air flow with the hole wall surface of the curved air channels 1a, thereby improving the extraction rate of the aerosol.

[0135] In one embodiment, the curved air channels 1a are in a spiral shape. That is to say, the three-dimensional shape of the curved air channels 1a is a spatial spiral shape. The connection line between any point of the spiral-shaped curved air channels 1a and the starting point has an inclination angle relative to its axis. The spiral-shaped curved air channels 1a can greatly extend the flow path of the air flow, precipitate the aerosol from the aerosol-forming substrate section 1 into the curved air channels 1a, increase the flow velocity of the aerosol in the aerosol-forming substrate section 1, thereby increasing the impact force of the air flow, enabling the aerosol to be evenly mixed, improving the aerosol uniformity, and enhancing the user's suction feeling.

[0136] In one embodiment, the aerosol-forming substrate section 1 is an integral structure.

[0137] Exemplarily, the aerosol-forming substrate section 1 can be made into an integrally formed structure by processes such as injection molding, die casting, or extrusion. In this way, during the use of the aerosol-forming substrate section 1, such as during heating and suction or after stopping heating, it is an integral medium and is not prone to problems such as disintegration and falling off.

[0138] Extrusion molding refers to a processing method in which the material is pushed by the screw towards the discharge port through the interaction between the barrel and the screw of the extrusion device, and the aerosol-forming substrate section 1 with a preset projection shape and corresponding pores is formed through an extrusion die such as a die head.

[0139] In one embodiment, micropores may exist inside the aerosol-generating substrate section 1. Exemplarily, in one embodiment, the aerosol-generating substrate section 1 is an agglomerate. The gaps between the particles of the agglomerate form micropores, and multiple micropores communicate with each other to form microchannels. For example, dimensions such as the cross-sectional area and length of the microchannels are naturally formed by the material components, and a certain expansion of the material components can form the microchannels. The aerosol can flow through the microchannels. Thus, the micropores can not only increase the surface area of the aerosol-generating substrate section 1, facilitate heat transfer, and improve the heating efficiency, but also facilitate the flow of the aerosol.

[0140] It should be noted that the airways 1a described in this application are all different from the micropores, and the micropores are all disordered. That is to say, the micropores are randomly generated. Disorder means that it is difficult to be generated orderly according to the design. The airways 1a are all orderly, that is, they are mainly formed by design and processing and are predictable. The airways 1a described in this application belong to pores in the macroscopic sense, and the micropores belong to pores in the microscopic sense. The dimensions such as the cross-sectional area of the flow-through section of the airways 1a and the length of the airways 1a are much larger than those of the micropores. The airways 1a are mainly formed by design and processing. For example, they are formed by a die. Therefore, the dimensions such as the cross-sectional area and length of the airways 1a can be changed according to the design requirements, while the dimensions of the micropores are determined by the gaps between the particles. For example, when the material is granular, the aerosol-generating substrate section 1 formed by extruding the material has micropores, and the dimensions such as the cross-sectional area and length of the flow-through section of the micropores are naturally formed by the extrusion process and the material components. A certain expansion occurs after the material flows out of the die opening of the material feeding cylinder to form the micropores.

[0141] In some embodiments, the aerosol-generating substrate section 1 has microchannels and airways 1a, and the airways 1a communicate with the microchannels. The aerosol-generating substrate section 1 releases the aerosol when heated. The aerosol is collected into the airways 1a through the microchannels. The aerosol released by the medium exposed to the airways 1a (i.e., the material located on the inner surface of the airways 1a) can be directly released into the airways 1a. The aerosol between each of the first airways 1a and / or between the airways 1a can also flow through each other through the microchannels and is transported to the near-lip end under the action of the suction negative pressure.

[0142] In one embodiment, the aerosol-generating substrate section 1 includes a plant raw material, an auxiliary raw material, a fuming agent raw material, an adhesive raw material, and a fragrance raw material.

[0143] The plant raw material is used to generate aerosol 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 suction process and enhance 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, so as 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.

[0144] In one embodiment, the plant raw material is one or more combinations of powders formed by crushing tobacco raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and aromatic plants. The plant raw material is the core source of flavor. The endogenous substances in the plant raw material can produce physiological satisfaction for the user. The endogenous substances, such as alkaloids, enter the human blood and promote the pituitary gland to produce dopamine, thereby obtaining physiological satisfaction.

[0145] In one embodiment, the auxiliary agent raw material can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant raw material, and the inorganic filler also has micropores, which can increase the porosity of the aerosol generation matrix segment 1, thereby increasing the aerosol release rate.

[0146] The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the plant raw material powder, reduce the friction between the plant raw material powders, make the overall density of the plant raw material powder distribution more uniform, and also reduce the pressure required in the extrusion molding process and reduce the wear of the die.

[0147] The emulsifier includes one or more combinations of polyglycerol fatty acid ester, Tween-80, and polyvinyl alcohol. The emulsifier can slow down the loss of flavor substances during storage to a certain extent, increase the stability of flavor substances, and improve the sensory quality of the product.

[0148] In one embodiment, the raw materials of the smoke agent may include: monohydric alcohols (such as menthol); polyhydric alcohols (such as propylene glycol, glycerol, triethylene glycol, 1,3-butanediol, and tetraethylene glycol); esters of polyhydric alcohols (such as glyceryl triacetate, triethyl citrate, a mixture of diacetin, triethyl citrate, benzyl benzoate, tributyrin); monocarboxylic acids; dicarboxylic acids; polycarboxylic acids (such as lauric acid, myristic acid) or aliphatic esters of polycarboxylic acids (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a mixture of diacetin, diethyl octanedioate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, lauryl acetate), or a combination of one or more thereof.

[0149] In one embodiment, the raw materials of the binder are in close contact by interfacial wetting with the component raw materials, generating intermolecular attraction, thereby playing a role in bonding component raw materials such as powders and liquids. The raw materials of the binder can be natural plant extracts and non-ionized modified viscous polysaccharides, including one or more combinations of tamarind polysaccharide, guar gum, and modified cellulose (such as carboxymethyl cellulose). The binder is used to bond the particles together, making them not easy to loosen. In addition, it improves the water resistance of the aerosol generation matrix section 1 and is harmless to the human body.

[0150] In one embodiment, the raw materials of the flavor are used to provide characteristic aromas, such as solid or liquid substances with hay-like aroma, roasted sweet aroma, and nicotine. The raw materials of the flavor can include one or more combinations of tobacco, extracts of fragrant plants, extracts, essential oils, and absolute oils; the raw materials of the flavor can include monomeric flavor substances, such as one or more combinations of megastigmatrienone, neophytadiene, geraniol, and nerol.

[0151] In the description of the present application, the description with reference to terms such as "in one embodiment", "in some embodiments", "in other embodiments", "in still other embodiments", or "exemplary" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples.

[0152] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are all included within the protection scope of the present application.

Claims

1. An aerosol-generating article having a distal end and a proximal end, characterized in that, Comprising: An aerosol - forming substrate segment; A check segment, with the check segment provided at at least one end of the aerosol - forming substrate segment, the check segment enabling one - way flow of air from the distal lip end to the proximal lip end; A wrapping layer, the wrapping layer wrapping the outer periphery of the aerosol - forming substrate segment and the outer periphery of the check segment.

2. The aerosol-generating article according to claim 1, wherein, The check segment includes a housing and a valve body. The wrapping layer wraps the outer periphery of the housing. The housing is formed with a flow - through channel, and the valve body is disposed in the flow - through channel. The air flow from the distal lip end drives the valve body to unidirectionally open the flow - through channel.

3. The aerosol-generating article according to claim 2, wherein, The valve body includes a limiting portion and a deformable portion. The deformable portion is formed with an elastic opening. The limiting portion surrounds the outer periphery of the deformable portion, and the limiting portion is connected to the wall surface of the flow - through channel; the elastic opening remains closed in the natural state; the air flow from the distal lip end can drive the elastic opening to open.

4. The aerosol-generating article according to claim 3, wherein The flow - through channel includes an air flow inlet and a partition chamber communicating with the air flow inlet. The limiting portion is connected to the surrounding portion of the air flow inlet, and the wall surface of the partition chamber is used to limit the deformation stroke of the deformable portion.

5. The aerosol-generating article according to claim 4, wherein, The cross - sectional area of the flow - through section of the partition chamber gradually decreases from the distal lip end to the proximal lip end.

6. The aerosol-generating article according to claim 4, wherein, The check segment includes a stopper, and the stopper is disposed at the air flow inlet and is located at the distal lip end of the deformable portion.

7. The aerosol-generating article according to claim 4, wherein, The housing includes a partition portion and a support plate. The partition portion is formed with the partition chamber. Openings communicating with the partition chamber are formed at both the distal lip end and the proximal lip end of the partition portion. The support plate is located at the opening at the distal lip end of the partition portion, and the support plate is formed with the air flow inlet.

8. The aerosol-generating article according to claim 2, wherein The check segment includes a converging tube, and a converging channel is formed in the converging tube. The converging channel communicates with the proximal lip end of the flow - through channel.

9. The aerosol-generating article according to claim 2, wherein, The check segment includes an accelerating tube, and an accelerating channel is formed in the accelerating tube. The accelerating channel communicates with the distal lip end of the flow - through channel, and the cross - sectional area of the flow - through section at any position of the accelerating channel is not greater than the minimum cross - sectional area of the flow - through channel.

10. The aerosol-generating article according to claim 2, wherein, The valve body abuts against the wall surface of the flow - through channel in the natural state to close the flow - through channel, and the air flow from the distal lip end can drive the valve body to move towards the proximal lip end to open the flow - through channel.

11. The aerosol-generating article according to claim 10, wherein, The valve body includes a main body portion and a sealing portion. The main body portion is connected to the proximal lip end of the sealing portion, and a support surface perpendicular to the first direction is formed at the connection between the main body portion and the sealing portion; when the valve body is in the natural state, at least one of the support surface and the circumferential surface of the sealing portion abuts against the wall surface of the flow - through channel.

12. The aerosol-generating article according to claim 11, wherein, The flow - through channel includes a contraction chamber. The cross - sectional area of the contraction chamber gradually decreases from the proximal lip end to the distal lip end. Taking a plane perpendicular to the first direction as the cross - section, the cross - sectional area of the sealing portion gradually decreases from the proximal lip end to the distal lip end; when the valve body is in the natural state, the circumferential surface of the sealing portion abuts against the wall surface of the contraction chamber.

13. The aerosol-generating article according to claim 11, wherein, The circumferential surface of the main body portion is formed with air - vent grooves passing through at least one end face along the first direction.

14. The aerosol-generating article according to claim 11, wherein, The main body portion includes a cylindrical sub-portion and a connecting sub-portion. The cylindrical sub-portion is located at an end of the connecting sub-portion away from the sealing portion. The connecting sub-portion connects the cylindrical sub-portion and the sealing portion. The end face of the connecting sub-portion facing the sealing portion is the supporting surface. Taking a plane perpendicular to the first direction as a cross-section, the cross-sectional area of the connecting sub-portion gradually decreases from the near-lip end to the far-lip end.

15. The aerosol-generating article according to claim 10, wherein, The housing is formed with a stop portion. At least a part of the stop portion is disposed in the flow-through channel and is located at the near-lip end of the valve body. When the valve body is in a natural state, the stop portion is spaced apart from the valve body. The stop portion is used to limit the movement stroke of the valve body moving towards the near-lip end.

16. The aerosol-generating article according to any one of claims 1 to 15, characterized in that, The return stop segment is in contact with or spaced apart from the aerosol-forming substrate segment.

17. The aerosol-generating article according to any one of claims 1 to 15, characterized in that, The aerosol-generating article includes a functional segment. The functional segment is disposed at the near-lip end of the aerosol-forming substrate segment. The wrapping layer wraps around the outer periphery of the functional segment in the first direction.

18. The aerosol-generating article according to claim 17, wherein, The return stop segment is located between the aerosol-forming substrate segment and the functional segment; or, The aerosol-forming substrate segment is located between the functional segment and the return stop segment; or, The functional segment includes a plurality of sub-segments arranged in the first direction. The return stop segment is located between two of the sub-segments.

19. The aerosol-generating article according to any one of claims 1 to 15, characterized in that, The wrapping layer has an air inlet. The air inlet is located at the near-lip end of the aerosol-forming substrate segment.

20. The aerosol-generating article according to any one of claims 1 to 15, characterized in that, The aerosol-forming substrate segment is formed with an air passage. The air passage passes through at least one end face of the aerosol-forming substrate segment in the first direction.

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