Non-combustion heating type products and their aerosol generating substrates

Abstract

This application relates to a non-combustion heating product and an aerosol generating substrate thereof, wherein the aerosol generating substrate includes a columnar smoke-generating body, the smoke-generating body has a near lip end and a far lip end located at both ends in its axial direction, the smoke-generating body includes an airflow hole that penetrates the near lip end along the axial direction of the smoke-generating body, and a plurality of micropores uniformly distributed within the smoke-generating body and communicating with each other, the micropores communicating with the airflow hole, thereby focusing the aerosol into the airflow hole. When the aerosol generating substrate is heated, the aerosols generated by the heating pass through micropores, which serve to homogenize the particle size of the aerosols, and are focused into the airflow pores. As a result, the aerosols that pass through the micropores have nearly the same particle size. Furthermore, the aerosols generated by the heating pass through the micropores and are focused into adjacent airflow pores. Aerosols generated at different locations flow into the cooling section and are mixed. This further improves the uniformity of the aerosols, allowing them to be buffered and evenly distributed, and ensuring consistency in aerosol concentration and flavor across different non-combustion heating products.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims priority to Chinese Application No. 202322767540.X, titled "Non - Combustion Heating Products and Their Aerosol - Generating Substrates", filed on October 16, 2023, and Chinese Application No. 202322771800.0, titled "Non - Combustion Heating Stick and Solid Smoke Cartridge", and the entire contents of both are incorporated herein by reference.

[0002] This application relates to the field of non - combustion heating electronic cigarettes, and more specifically, to non - combustion heating products and their aerosol - generating substrates.

Background Art

[0003] In the stick of an electronic cigarette in related technologies, the tobacco shreds are usually filled in rolling paper, forming a columnar smoking part with a porous interior. In this case, since the gaps between the tobacco shreds are large, when the stick is heated and atomized, the generated aerosol usually flows through the gaps between the tobacco shreds inside the stick to the user's mouth. However, during the flow, it is affected by the filtering action of particles or tobacco leaves, so the flavor and concentration when reaching the mouth change.

[0004] Also, after different positions of the stick are heated, there are differences in the aerosol generated by heating due to the variation in heat reception, and their outflow paths are also very different, resulting in a decrease in the consistency of the taste between different sticks.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by this application is to provide a non - combustion heating product and its aerosol - generating substrate with better aerosol uniformity and more consistent taste of the non - combustion heating product, in response to the above - mentioned defects of the prior art.

Means for Solving the Problems

[0006] The technical solution employed in this application to solve the technical problem is to construct an aerosol generating substrate, which includes a columnar smoke generating body, The smoke-generating body has a near lip end and a far lip end located at both ends in its axial direction, and the smoke-generating body includes an airflow hole that penetrates the near lip end along the axial direction of the smoke-generating body, and a plurality of micropores that are uniformly distributed within the smoke-generating body and communicate with each other, and the micropores communicate with the airflow hole to concentrate the aerosol into the airflow hole.

[0007] In some embodiments, the airflow holes have at least two different external dimensions in the axial direction of the smoke-generating unit body.

[0008] In some embodiments, at least one of the airflow holes is a through hole, and / or at least one of the airflow holes is not a through hole.

[0009] In some embodiments, the cross-sectional dimensions of the airflow vent gradually decrease from the near lip to the far lip, or gradually increase from the near lip to the far lip.

[0010] In some embodiments, the airflow vent includes at least two vent segments distributed along the axial direction, of which at least two of the vent segments have different external dimensions.

[0011] In some embodiments, at least one of the pore segments includes a large pore end and a small pore end, and the cross-sectional outer dimensions gradually decrease from the large pore end to the small pore end.

[0012] In some embodiments, at least two adjacent pore segments each include a large pore end and a small pore end, and the external dimensions of the small pore end of the pore segment near the near lip end are greater than or equal to the external dimensions of the large pore end of the pore segment near the far lip end.

[0013] In some embodiments, at least two pore segments have different shapes, or at least two pore segments have different diameters.

[0014] In some embodiments, the smoke-generating unit body includes at least two smoke-generating elements, each of which is combined with the others to form the smoke-generating unit body.

[0015] In some embodiments, the smoke-generating elements are arc-shaped, and each of the smoke-generating elements is assembled and enclosed along the circumferential direction to form the airflow holes.

[0016] In some embodiments, the smoke emitters are columnar in shape, and at least some of the smoke emitters have pores that penetrate in the axial direction. When the smoke emitters are joined together along the axial direction, the pores connect and communicate to form an airflow vent.

[0017] In some embodiments, the cross-sectional shape of the airflow vent is at least one of circular, elliptical, polygonal, or irregular shapes, and / or the cross-section of the airflow vent at different axial positions includes at least two different dimensions and / or shapes.

[0018] In some embodiments, the smoke-generating body comprises at least one of tobacco fibers and non-tobacco plant fibers, the porosity of the micropores is 20% to 80%, and / or the pore diameter of the micropores is 50 nm to 20 μm.

[0019] In some embodiments, the smoke-generating unit body is provided with at least two of the airflow holes.

[0020] In some embodiments, the cross-sectional dimensions and outer shape of each of the airflow holes are the same, or Each of the aforementioned airflow holes includes at least two types, and the cross-sectional dimensions and / or external shapes of the different types of airflow holes are different.

[0021] In some embodiments, the aerosol generating substrate includes a columnar aerosol generating section body, and the aerosol generating section body is divided into a honeycomb shape by the airflow holes.

[0022] In some embodiments, the ratio of the total area of the end faces of each of the airflow holes at each end of the aerosol generating section body to the surface area of the end where they are located is 1:12 to 1:8.

[0023] In some embodiments, the aerosol generating section body includes at least two aerosol generating bodies, and gas grooves are provided on the side surfaces of at least some of the aerosol generating bodies. When the aerosol generating bodies are combined, the gas grooves of adjacent aerosol generating bodies are joined to each other to form the airflow holes.

[0024] Another object of the present application is to provide an aerosol generating substrate, which includes a columnar aerosol generating section body. The aerosol generating section body has a near-lip end and a far-lip end located at both ends in its axial direction. The aerosol generating section body includes airflow holes penetrating the near-lip end along the axial direction of the aerosol generating section body, and a plurality of micropores uniformly distributed in the aerosol generating section body and communicating with each other. The micropores communicate with the airflow holes to focus the aerosol on the airflow holes. The pore diameter of the micropores is 50 nm to 20 μm, and the ratio of the total area of the end faces of each of the airflow holes at each end of the aerosol generating section body to the surface area of the end where they are located is 1:12 to 1:8.

[0025] A further object of the present application is to provide an aerosol generating substrate, which includes a columnar aerosol generating section body. The aerosol generating section body has a near-lip end and a far-lip end located at both ends in its axial direction. The aerosol generating section body includes at least two airflow holes penetrating the near-lip end along the axial direction of the aerosol generating section body, and a plurality of micropores uniformly distributed in the aerosol generating section body and communicating with each other. The micropores communicate with the airflow holes to focus the aerosol on the airflow holes. The ratio of the total area of the end faces of each of the airflow holes at each end of the aerosol generating section body to the surface area of the end where they are located is 1:12 to 1:8.

[0026] Yet another object of the present application is to provide a non-combustion heating product including a cooling part, a filter tip, and the aerosol generating substrate, wherein the cooling part is located between the aerosol generating substrate and the filter tip, and the near lip end is close to the cooling part.

Advantages of the Invention

[0027] By implementing the non-combustion heating product and its aerosol generating substrate according to the present application, the following beneficial effects are achieved. When the aerosol generating substrate is heated, the aerosol generated by the heating passes through micropores that serve to equalize the particle size of the aerosol and converges into the air flow holes. As a result, the aerosol passing through the micropores has substantially the same particle size. Furthermore, the aerosol generated by the heating passes through the micropores and converges into adjacent air flow holes, and the aerosols generated at different positions are mixed after flowing into the cooling part. Thereby, the uniformity of the aerosol is further improved, the aerosol can be buffered and uniformly filled, and the consistency of the concentration and flavor of the aerosol in different non-combustion heating products is ensured.

Brief Description of the Drawings

[0028] The present application will be further described in more detail below in combination with the drawings and embodiments.

[0029] [Figure 1] It is a schematic diagram showing a cross-sectional structure of a non-combustion heating product in an embodiment of the present application. [Figure 2] It is a schematic diagram showing a three-dimensional structure of the non-combustion heating product shown in FIG. 1. [Figure 3] It is a schematic diagram showing a cross-section of the aerosol generating substrate shown in FIG. 2. <​​​​​​This is a schematic diagram showing the cross-sectional structure of a non-combustion heating product in a first embodiment according to one example of this application. [Figure 7] This is a schematic diagram showing the cross-sectional structure of a non-combustion heating product in a second embodiment according to one example of this application. [Figure 8] This is a schematic diagram showing the case where the airflow holes in the third embodiment according to one embodiment of this application are stepped holes. [Figure 9] This is a schematic diagram showing a cross-section of an airflow vent in a fourth embodiment according to one example of this application. [Figure 10] This is a schematic diagram showing a cross-section of an airflow vent in a fifth embodiment according to one example of this application. [Figure 11] This is a schematic diagram showing a cross-section of an airflow vent in the sixth embodiment according to one example of this application. [Figure 12] This is a schematic diagram showing a cross-section of an airflow vent in the seventh embodiment according to one example of this application. [Figure 13] This is a schematic diagram showing the structure of an aerosol generating substrate in one embodiment of the present application, where airflow holes are formed by joining smoke-generating elements. [Figure 14] This is a schematic diagram showing the structure of an aerosol generating substrate in one embodiment of the present application, where the airflow holes are formed by joining the smoke-generating parts. [Figure 15] This is an electron microscope image of an aerosol-generating substrate in one embodiment of this application. [Figure 16] This is a schematic diagram showing the cross-sectional structure of a non-combustion heating product in one embodiment of this application. [Figure 17] Figure 16 is a schematic diagram showing the three-dimensional structure of the aerosol-generating substrate of the non-combustion heating product. [Figure 18] Figure 17 is a schematic diagram showing a cross-section of the aerosol generating substrate. [Figure 19] This is a schematic diagram of one embodiment after changing the shape of the airflow holes. [Figure 20] This is a schematic diagram of one embodiment after changing the shape of both the upper and lower ends of the airflow hole. [Figure 21]This is a schematic diagram showing the structure of a non-combustion heating product in one embodiment where the airflow holes of the aerosol generating substrate are non-through holes. [Figure 22] This is a schematic diagram showing the structure of an aerosol-generating substrate in one embodiment, where the near lip of the airflow vent is larger than the far lip. [Figure 23] This is a schematic diagram showing the structure of an aerosol-generating substrate in one embodiment, where the near lip of the airflow vent is smaller than the far lip. [Figure 24] This is a schematic diagram showing the structure of the airflow pores in an aerosol-generating substrate in one embodiment. [Figure 25] This is a schematic diagram showing the structure of an aerosol-generating substrate in one embodiment, where airflow holes are formed by joining smoke-generating elements. [Figure 26] This is a schematic diagram showing the structure of an aerosol-generating substrate in one embodiment, where the airflow holes are formed by joining the smoke-generating section. [Modes for carrying out the invention]

[0030] To gain a clearer understanding of the technical features, objectives, and effects of this application, specific embodiments of this application will be described in detail below with reference to the drawings.

[0031] First Example As shown in Figures 1 to 3, a non-combustion heating product in one embodiment of this application includes an aerosol generating substrate 10, a cooling unit 20, and a filter tip 30 arranged sequentially in the axial direction, and the aerosol generating substrate 10, the cooling unit 20, and the filter tip 30 are connected and fixed to each other to form a non-combustion heating product.

[0032] The aerosol generating substrate 10 includes a columnar smoke generating body 11, which has a near lip A and a far lip B located at both ends in its axial direction, and the cooling unit 20 is located between the aerosol generating substrate 10 and the filter tip 30, with the near lip A being close to the cooling unit 20. The smoke generating body 11 has airflow holes 12 extending from the near lip A to the far lip B, and a plurality of micropores. 100(See Figure 15) and are provided. The airflow holes 12 penetrate the near lip A along the axial direction of the smoke generating unit body 11, and each microhole 100 These are uniformly distributed within the smoke-generating unit body 11 and communicate with each other, and have fine pores. 100 By communicating with the airflow holes 12, the aerosol is focused into the airflow holes 12.

[0033] The airflow holes 12 can be through holes, and as shown in Figure 4, the airflow holes 12 can also be non-through holes. In the non-combustion heating product according to the embodiment of this application, the opening of the near lip A portion of the airflow holes 12 is provided toward the filter tip 30, thereby enabling the aerosol to flow from the airflow holes 12 to the cooling section 20 and the filter tip 30.

[0034] The smoke-generating unit body 11 contains plant fibers, and when the raw material is expanded and the moisture is dried, micropores are formed. 100 Micropores are formed. 100 The porosity is 20% to 80%, and the pore size is 50 nm to 20 μm. After the aerosol generating substrate 10 is heated, the aerosol generated by the heating is formed in the micropores. 100 The aerosols pass through the airflow holes 12 and are focused there, and the aerosols generated at different locations are mixed, which improves the uniformity of the aerosols. Furthermore, the aerosols flow from the airflow holes 12 to the cooling unit 20, which concentrates, stores, and cools the aerosols. When the user inhales, the aerosols in the cooling unit 20 are first drawn in, and after the aerosols in the cooling unit 20 are drawn out, newly generated aerosols re-flow into the cooling unit 20. This effectively prevents the aerosols from directly entering the user's mouth, avoiding a burning sensation in the mouth and improving the flavor of the aerosols.

[0035] In one embodiment, the smoke-generating body 11 is mixed with tobacco fibers or other non-tobacco plant fibers, and a solid aerosol-generating substrate 10 is formed by compression and molding.

[0036] The number of airflow holes 12 in the aerosol generating substrate 10 may be one or more. Multiple airflow holes 12 are used to allow the aerosol to flow out to the filter tip 30, improving the ventilation position and allowing the degree of heating at different positions to be changed, thereby allowing the flavor to be adjusted.

[0037] Furthermore, the cross-sectional shape of the airflow hole 12 is circular, but in other embodiments, as shown in Figure 5, the cross-sectional shape of the airflow hole 12 may be elliptical, polygonal, or other irregular shape, and furthermore, the same airflow hole 12 may have different hole shapes at different positions in the axial direction.

[0038] In some embodiments, the cross-sections of the airflow holes 12 at different axial positions include two or more external dimensions, of which at least two pore segments 121 have different external dimensions. Different external dimensions here can refer to cases where the substantial external shape is different, or it can refer to differences in dimensions within the same shape. This allows the airflow holes 12 to have different cross-sectional dimensions in the axial direction. As the aerosol flows into and through the airflow holes 12, the aerosol velocity is affected by the change in pore dimensions, thereby achieving the objective of changing the aerosol velocity within the airflow holes 12, mixing the aerosol and further improving its uniformity. 100 After passing through, the particles have nearly the same diameter, and therefore the particle size of the aerosol becomes more uniform and finer. 100 Aerosols focused into the airflow vents have different flow velocities as they pass through different sections of the vents, thereby providing different inhalation experiences.

[0039] Specifically, as shown in Figure 6, in the first embodiment of this design, the cross-sectional outer dimensions of the airflow holes 12 gradually decrease from the near lip A to the far lip B. For example, a conical flow path is formed, with a larger near lip and a smaller far lip. After the smoke-generating unit body 11 is heated, when the user inhales, the gas inside the cooling unit 20 is first drawn out, and furthermore, the outer shape of the airflow holes 12 becomes a micro-hole. 100Because it is larger than the micropores, the airflow velocity increases, and the aerosol generated in the smoke-generating unit body 11 is released into the micropores. 100 The air passes through the airflow hole 12, flows into the cooling unit 20 due to the airflow, is cooled, and is then used for the user's next inhalation.

[0040] Because the near lip of the airflow vent 12 is large and the far lip is small, the aerosol is transported from the small vent diameter to the large vent diameter within the smoke-generating unit body 11, reducing the flow velocity, and as a result, the uniformity of the aerosol is further improved.

[0041] As shown in Figure 7, in the second embodiment of this design, the cross-sectional dimensions of the airflow holes 12 gradually increase from the near lip A to the far lip B, forming a conical flow path with a smaller near lip and a larger far lip. After the smoke-generating unit body 11 is heated, when the user inhales, the gas in the cooling unit 20 is first drawn out, and furthermore, the outer shape of the airflow holes 12 becomes a micropore. 100 Because it is larger than the micropores, the airflow velocity increases, and the aerosol generated in the smoke-generating unit body 11 is released into the micropores. 100 The air passes through the airflow hole 12, flows into the cooling unit 20 due to the airflow, is cooled, and is then used for the user's next inhalation.

[0042] Because the near lip of the airflow hole 12 is small and the far lip is large, the aerosol is transported from the large hole diameter to the small hole diameter within the smoke generating unit body 11. During the transport process, the pressure gradually increases and the flow velocity increases, which is advantageous for cooling the smoke and also creates a Venturi effect, causing the aerosol to flow into the cooling unit 20.

[0043] As shown in Figure 8, in the third embodiment of this model, the airflow holes 12 include two or more pore segments 121 distributed along the axial direction, wherein at least two pore segments 121 have different shapes or at least two pore segments 121 have different diameters. Each pore segment 121 is a hole of uniform diameter, and the external dimensions of two adjacent pore segments 121 are different. Specifically, in this embodiment, the airflow holes 12 are stepped holes, and a step is formed between two adjacent pore segments 121. In specific use processes, the orientation of the airflow holes 12 can be changed as needed, that is, the large hole end may be directed toward the filter tip 30, or the small hole end may be directed toward the filter tip 30.

[0044] As shown in Figure 9, in the fourth embodiment of this model, the airflow pore 12 includes two or more pore segments 121 distributed along the axial direction, wherein at least two of the pore segments 121 have different shapes or at least two of the pore segments 121 have different diameters. Specifically, at least one of the pore segments 121 includes a large pore end and a small pore end, and its cross-sectional outer dimensions gradually decrease from the large pore end to the small pore end, while the cross-sectional outer dimensions of the other pore segments 121 can be set as needed.

[0045] Specifically, in this embodiment, the airflow pore 12 includes two pore segments 121 distributed along the axial direction. The cross-sectional dimensions of the pore segment 121 located at the near lip A gradually decrease from the near lip A towards the far lip B, while the pore segment 121 located at the far lip B is a pore with a uniform diameter. As a result, the gas is transported from the small pore diameter to the large pore diameter within the pore segment 121 at the near lip A, the flow velocity decreases, and the gas flows out from the near lip A, further improving the uniformity of the aerosol.

[0046] As shown in Figure 10, in the fifth embodiment of this model, the airflow pore 12 includes two or more pore segments 121 distributed along the axial direction, wherein at least two of the pore segments 121 have different shapes or at least two of the pore segments 121 have different diameters. Specifically, at least one of the pore segments 121 includes a large pore end and a small pore end, and its cross-sectional dimensions gradually decrease from the large pore end to the small pore end, while the cross-sectional dimensions of the other pore segments 121 can be set as needed.

[0047] Specifically, the airflow pore 12 includes two pore segments 121 distributed along the axial direction. The difference between this embodiment and the fourth embodiment is that the cross-sectional dimensions of the pore segment 121 located at the far lip end B gradually increase from the far lip end B toward the near lip end A, while the pore segment 121 located at the near lip end A has a uniform diameter. As a result, gas is transported from the small pore diameter to the large pore diameter within the pore segment 121 at the far lip end B, its flow velocity decreases, it flows into the pore segment 121 closer to the near lip end A, and then flows out from the near lip end A.

[0048] As shown in Figure 11, in the sixth embodiment of this embodiment, the airflow pore 12 includes two or more pore segments 121 distributed along the axial direction, and based on the fourth and fifth embodiments, two adjacent pore segments 121 both have a large pore end and a small pore end, and the external dimensions of the small pore end of the pore segment 121 near the near lip A are greater than or equal to the external dimensions of the large pore end of the pore segment 121 near the far lip B. Specifically, a step may be formed between the two pore segments 121 to form a staircase, and the inclination angles of adjacent pore segments 121 may be different from each other.

[0049] In the first, third, fourth, fifth, and sixth embodiments described above, the far lip end B can be closed to make the airflow hole 12 a non-through hole. In this way, the aerosol generated by heating flows into the airflow hole 12 along with the gas flow and then flows out from the near lip end A. In some embodiments, when the airflow hole 12 is a non-through hole, a hole can be made in the side wall of the cooling section 20 to allow the airflow to flow from the cooling section 20 of the non-combustion heating product to the filter tip 30. Otherwise, the smoke cannot be drawn in due to excessive suction resistance.

[0050] As shown in Figure 12, in the seventh embodiment of this model, the airflow holes 12 are through holes, and the outer shapes of the holes located at the near lip A and far lip B are larger than the outer shapes of the holes located inside the smoke generating body 11. That is, the middle part of the airflow holes 12 is constricted, and both small hole ends are located in the middle part. As the aerosol generated in the region near the far lip B flows towards the near lip A, the pressure gradually increases and the flow velocity increases. Subsequently, it flows into the pore segment 121 near the near lip A, and is further transported from the small hole diameter to the large hole diameter, where the flow velocity decreases. Since the flow velocities are mismatched throughout the entire transport process, the effect of mixing the aerosol can be achieved.

[0051] As shown in Figure 13, in each of the above embodiments, the smoke-generating unit body 11 further includes two or more smoke-generating elements 111, and each smoke-generating element 111 is combined to form the smoke-generating unit body 11.

[0052] In some embodiments, the smoke-generating unit body 11 includes two or more smoke-generating elements 111 arranged in parallel, each smoke-generating element 111 being arc-shaped, and when each smoke-generating element 111 is combined and enclosed along the circumferential direction, an airflow hole 12 is formed in the middle. Selectively, each smoke-generating element 111 has the same external shape and can be obtained by dividing the smoke-generating unit body into a predetermined number of equal parts, thereby enabling faster assembly.

[0053] As shown in Figure 14, in another embodiment, the smoke emitters 111 are columnar in shape, and some or all of the smoke emitters 111 are provided with through-pores. When the smoke emitters 111 are joined together along the axial direction, the pores connect and communicate to form an airflow vent 12.

[0054] The outer shape of the smoke-generating body 11 may be cylindrical, or it may be an ellipsoid, a rectangular prism, or some other flat mouthpiece shape, which makes it easy to manufacture non-combustion heating products of the corresponding shape and allow the user to inhale by placing it in their mouth. During use of the non-combustion heating product, the temperature after the aerosol is mixed and cooled is appropriate, the flavor becomes more uniform, and variations in the flow process after aerosol generation are reduced.

[0055] Second Example As shown in Figure 16, a non-combustion heating product in one embodiment of this application includes an aerosol generating substrate 10, a cooling section 20, and a filter tip 30, the aerosol generating substrate 10, the cooling section 20, and the filter tip 30 being arranged sequentially in the axial direction, connected and fixed to form a non-combustion heating product, and the cooling section 20 can function as a cooling channel and a connecting section.

[0056] As shown in Figures 16, 17, and 18, the aerosol generating substrate 10 includes a columnar smoke generating body 11, which has a near lip A and a far lip B at both ends, and the filter tip 30 and the aerosol generating substrate 10 are connected to the near lip A and far lip B of the cooling unit 20, respectively. Here, the near lip A and far lip B are named with reference to the aerosol flow direction, and during the suction process, the aerosol generated in the aerosol generating substrate 10 is transported from the upstream far lip B to the downstream near lip A. The smoke generating body 11 is provided with a plurality of airflow holes 12 extending in its axial direction, and at least the airflow holes 12 penetrate the near lip A. Typically, the number of airflow holes 12 can be two or more. At least one of the airflow holes 12 may be a through hole or a non-through hole, or the smoke generating body 11 may be provided with both through airflow holes and non-through airflow holes simultaneously. In the non-combustion heating product according to this embodiment, the opening at the near lip A of the airflow hole 12 is provided facing the filter tip 30, thereby enabling the aerosol to flow from the airflow hole 12 to the cooling section 20 and the filter tip 30.

[0057] As an example, the aerosol generating substrate 10 has micropores 100 (As shown in Figure 15) are scattered and micropores 100 The porosity is 20% to 80%, and the pore size is 50 nm to 20 μm. 100 They are in communication with each other and also with the airflow holes 12, thereby, Inside the micropore 100 The aerosol is focused into the airflow holes 12. After the aerosol generating substrate 10 is heated, the aerosol generated by the heating is focused into the micropores. 100 The aerosols pass through and are focused into the adjacent airflow holes 12, and the aerosols generated at different locations are mixed, which further improves the uniformity of the aerosols. Furthermore, the aerosols flow from the airflow holes 12 to the cooling unit 20, which concentrates, stores, and cools the aerosols. When the user inhales, the aerosols in the cooling unit 20 are first drawn in, and after the aerosols in the cooling unit 20 are drawn out, newly generated aerosols re-flow into the cooling unit 20. This effectively prevents the aerosols from directly entering the user's mouth, avoiding a burning sensation in the mouth and also improving the flavor of the aerosols.

[0058] Specifically, the aerosol-generating substrate 10 is integrally molded by mixing tobacco fibers or other plant fibers, followed by compression and die-cutting.

[0059] When there are many airflow holes 12, the airflow holes 12 may be arranged in an array, and the array can be of various types, such as a rectangular array, a circular array, or a radial array extending from the center outwards, and may be distributed irregularly, dividing the end face of the smoke-generating unit body 11 into a honeycomb shape and distributing the aerosol outflow locations on the end face. Optionally, each airflow hole 12 may be uniformly distributed in a grid pattern, which further equalizes the heating of each region and the distribution of aerosol outflow locations, resulting in greater consistency in the flavor of the aerosol produced after heating at each location. In other embodiments, the number of airflow holes 12 may gradually increase from the center of the end face outwards, forming multiple circumferential airflow holes 12 arranged from the inside outwards, resulting in a more uniform arrangement of airflow holes 12, which further equalizes the heating of each region and increases the consistency in the flavor of the aerosol.

[0060] Furthermore, each airflow hole 12 may be arranged so as to increase in multiples from the center outward, or so as to divide the end face equally, and the ratio of the total area of ​​the end faces of each airflow hole 12 at each end of the smoke-generating body 11 to the end area at which they are located is 1:12 to 1:8, and this ratio can be adjusted based on the amount of smoke generated and the amount of airflow of the smoke-generating body 11. For example, the above ratio may be 1:12, 1:11, 1:10, 1:9, 1:8, etc.

[0061] As shown in Figures 18, 19, and 20, in the first embodiment of the second embodiment, the airflow hole 12 penetrates from the near lip A to the far lip B, and the cross-section at different axial positions includes two or more external dimensions, and as shown in Figure 20, different external dimensions here refer to cases where the substantial external shape is different, for example, one end is circular and the other end is square. In other embodiments, the cross-sectional shape of the hole at different axial positions of the same airflow hole 12 can be one of the following: circular, polygonal, elliptical, polygonal star, irregular shape, etc., and these are combined to form the airflow hole 12, for example, one end is square and the other end is elliptical, or one end is polygonal and the other end is polygonal star. As shown in Figure 19, it is also possible to refer to different dimensions of the same shape. In this case, the airflow holes 12 can have different cross-sectional dimensions in the axial direction. For example, in the case of stepped airflow holes 12, when an aerosol flows into and through the airflow holes 12, the aerosol's flow velocity changes due to the change in the dimensions of the airflow holes 12. This achieves the objective of changing the aerosol's flow velocity within the airflow holes 12, thereby mixing the aerosol and further improving its uniformity.

[0062] To make it clear, as shown in Figure 21, in this embodiment, the airflow holes 12 may be non-through holes that do not penetrate to the far lip end B, in which case the gas is in the micropores. 100 After passing through, the generated aerosol, along with the micropores, 100 The air passes through and flows into the airflow hole 12, and then flows to the cooling section 20.

[0063] In the second embodiment of the second example, as shown in Figure 22, some of the airflow holes 12 may penetrate from the near lip A to the far lip B, and the cross-sectional outer dimensions of the airflow holes 12 may gradually decrease from the near lip A to the far lip B, thereby forming a conical flow path that is larger at the near lip and smaller at the far lip. After the smoke generating unit body 11 is heated, when the user inhales, the gas in the cooling unit 20 is first drawn out, and furthermore, the outer shape of the airflow holes 12 becomes fine holes. 100 Because it is larger than the micropores, the airflow velocity increases, and the aerosol generated in the smoke-generating unit body 11 is released into the micropores.100 The air passes through the airflow hole 12, flows into the cooling unit 20 due to the airflow, is cooled, and is then used for the user's next inhalation.

[0064] Because the near lip of the airflow hole 12 is large and the far lip is small, the aerosol is transported from the small hole diameter to the large hole diameter within the smoke-generating unit body 11, reducing the flow velocity, and as a result, the uniformity of the aerosol is further improved. As can be understood, in this embodiment, the airflow hole 12 may be a non-through hole that does not penetrate to the far lip B, in which case the gas will pass through the fine pores. 100 After passing through, the generated aerosol, along with the micropores, 100 The air flows from there into the airflow hole 12, and then into the cooling section 20. If the airflow hole 12 is not a through hole, a hole can be made in the side wall of the cooling section 20 to allow the airflow from the cooling section 20 of the non-combustion heating product to flow into the filter tip 30; otherwise, the smoke cannot be drawn in due to excessive suction resistance.

[0065] In the third embodiment of the second example, as shown in Figure 23, some of the airflow holes 12 may penetrate from the near lip A to the far lip B, and the cross-sectional outer dimensions of the airflow holes 12 may gradually increase from the near lip A to the far lip B, thereby forming a conical flow path that is small at the near lip and large at the far lip. After the smoke-generating unit body 11 is heated, when the user inhales, the gas in the cooling unit 20 is first drawn out, and furthermore, the outer shape of the airflow holes 12 is fine pores. 100 Because it is larger than the micropores, the airflow velocity increases, and the aerosol generated in the smoke-generating unit body 11 is released into the micropores. 100 The air passes through the airflow hole 12, flows into the cooling unit 20 due to the airflow, is cooled, and is then used for the user's next inhalation.

[0066] Because the near lip of the airflow hole 12 is small and the far lip is large, the aerosol is transported from the large hole diameter to the small hole diameter within the smoke generating unit body 11. During the transport process, the pressure gradually increases and the flow velocity increases, which is advantageous for cooling the smoke and also creates a Venturi effect, causing the aerosol to flow into the cooling unit 20. As can be understood, in this embodiment, the airflow hole 12 may be a non-through hole that does not penetrate to the far lip B, in which case the gas flows through the fine holes. 100 After passing through, the generated aerosol, along with the micropores, 100 The air flows from there into the airflow holes 12, and then into the cooling section 20.

[0067] In the fourth embodiment of the second example, as shown in Figure 24, some of the airflow holes 12 penetrate from the near lip A to the far lip B, the cross-sectional dimensions of some of the airflow holes 12 gradually decrease from the near lip A to the far lip B, and the cross-sectional dimensions of some of the airflow holes 12 gradually increase from the near lip A to the far lip B. In this case, by combining the actions of the two airflow holes 12 in the second and third embodiments, the aerosol can be introduced into the cooling section 20 for cooling and mixing, resulting in a more appropriate flavor for the aerosol.

[0068] Furthermore, in the above configuration, as shown in Figure 25, each airflow hole 12 is identical, and the cross-sectional shape, dimensions, etc., of the holes are all the same. In other configurations, each airflow hole 12 may include two or more types, and the cross-sectional external dimensions of different types of airflow holes 12 may differ from each other, or the cross-sectional external shapes of different types of airflow holes 12 may differ from each other, or both the cross-sectional external dimensions and cross-sectional external shapes of different types of airflow holes 12 may differ, thereby forming a variety of airflow holes 12.

[0069] In each of the above embodiments of the second embodiment, the smoke generating unit body 11 may include two or more smoke generating elements 111 arranged in parallel, and gas grooves 112 are provided on the sides of some or all of the smoke generating elements 111, and when the smoke generating elements 111 are assembled, the gas grooves 112 on adjacent smoke generating elements 111 are joined to form some or all of the airflow holes 12. Selectively, each smoke generating element 111 has the same external shape and can be obtained by dividing the smoke generating unit body 11 into a predetermined number of equal parts, thereby enabling faster assembly.

[0070] As shown in Figure 26, in another embodiment, the smoke-generating body 11 is divided in the longitudinal direction to form smoke-generating sections 113, and some or all of the smoke-generating sections 113 are provided with through-pore segments 114, and when each smoke-generating section 113 is joined along the axial direction, each pore segment 114 is connected and communicates, thereby allowing the aerosol to flow out from the near lip A to the cooling section 20.

[0071] The outer shape of the smoke-generating body 11 may be cylindrical, or it may be an ellipsoid, a rectangular prism, or some other flat mouthpiece shape, which makes it easy to manufacture cigarette sticks of the corresponding shape and allow the user to inhale by placing them in their mouth. During use of the cigarette stick, the temperature after the aerosol has been mixed and cooled is appropriate, resulting in a more uniform flavor and reduced variability in the flow process after aerosol generation.

[0072] As can be understood, the aforementioned technical features can be used in any combination without any limitations.

[0073] The foregoing are merely examples of the present application and are not intended to limit the scope of protection of the examples of this application. All equivalent structural or process transformations, or direct or indirect applications in other related technical fields, made by the specification and accompanying drawings of this application are also included within the scope of protection of this application.

Claims

1. Aerosol generating substrate, comprising a columnar smoke generating body (11), The smoke-generating body (11) has a near lip end (A) and a far lip end (B) located at both ends in the axial direction thereof, and the smoke-generating body (11) includes an airflow hole (12) that penetrates the near lip end (A) along the axial direction of the smoke-generating body (11), and a plurality of micropores uniformly distributed within the smoke-generating body (11) and communicating with each other, wherein the micropores communicate with the airflow hole (12), thereby focusing the aerosol into the airflow hole (12), characterized in that an aerosol-generating substrate.

2. The aerosol generating substrate according to claim 1, characterized in that the airflow holes (12) have at least two different external dimensions in the axial direction of the smoke generating body (11).

3. The aerosol generating substrate according to claim 1, characterized in that at least one of the airflow holes (12) is a through hole and / or at least one of the airflow holes (12) is a non-through hole.

4. The aerosol generating substrate according to claim 1, characterized in that the cross-sectional outer shape of the airflow hole (12) gradually decreases from the near lip end (A) to the far lip end (B), or gradually increases from the near lip end (A) to the far lip end (B).

5. The aerosol generating substrate according to claim 1, characterized in that the airflow holes (12) include at least two pore segments (121) distributed along the axial direction, and at least two of the pore segments (121) have different external dimensions.

6. The aerosol generating substrate according to claim 5, characterized in that at least one of the pore segments (121) includes a large pore end and a small pore end, and the cross-sectional outer shape gradually decreases from the large pore end to the small pore end.

7. The aerosol generating substrate according to claim 5, characterized in that at least two adjacent pore segments (121) each include a large pore end and a small pore end, and the outer shape of the small pore end of the pore segment (121) near the near lip end (A) is greater than or equal to the outer shape of the large pore end of the pore segment (121) near the far lip end (B).

8. The aerosol generating substrate according to claim 5, characterized in that at least two pore segments (121) have different shapes or at least two pore segments (121) have different diameters.

9. The aerosol generating substrate according to claim 1, characterized in that the smoke generating body (11) includes at least two smoke generating elements (111), and each of the smoke generating elements (111) is combined with one another to form the smoke generating body (11).

10. The aerosol generating substrate according to claim 9, characterized in that the smoke generating element (111) is arc-shaped, and each of the smoke generating elements (111) is combined and surrounded along the circumferential direction to form the airflow holes (12).

11. The aerosol generating substrate according to claim 9, characterized in that the smoke generating body (111) is columnar in shape, at least some of the smoke generating body (111) have pores that penetrate in the axial direction, and when each of the smoke generating body (111) is joined along the axial direction, the pores connect and communicate to form an airflow pore (12).

12. The aerosol generating substrate according to claim 1, characterized in that the cross-sectional shape of the airflow hole (12) is at least one of circular, elliptical, polygonal, or irregular shapes, and / or the cross-section of the airflow hole (12) at different axial positions includes at least two different dimensions and / or shapes.

13. The aerosol generating substrate according to claim 1, characterized in that the smoke generating body (11) comprises at least one of tobacco fibers and non-tobacco plant fibers, the porosity of the micropores is 20% to 80%, and / or the pore diameter of the micropores is 50 nm to 20 μm.

14. The aerosol generating substrate according to any one of claims 1 to 13, characterized in that the smoke generating body (11) is provided with at least two airflow holes (12).

15. The cross-sectional dimensions and outer shape of each of the aforementioned airflow holes (12) are the same, or The aerosol generating substrate according to claim 14, characterized in that each of the airflow holes (12) includes at least two types, and the cross-sectional dimensions and / or external shapes of the different types of airflow holes (12) are different.

16. The aerosol generating substrate according to claim 14, characterized in that the smoke generating body (11) is divided into a honeycomb shape by each of the airflow holes (12).

17. The aerosol generating substrate according to claim 14, characterized in that the ratio of the total area of ​​the end faces of each of the airflow holes (12) at each end of the smoke generating body (11) to the surface area of ​​the end where they are located is 1:12 to 1:

8.

18. Aerosol generating substrate, comprising a columnar smoke generating body (11), The smoke-generating body (11) has a near lip end (A) and a far lip end (B) located at both ends in the axial direction thereof, and the smoke-generating body (11) includes an airflow hole (12) that penetrates the near lip end (A) along the axial direction of the smoke-generating body (11), and a plurality of micropores uniformly distributed within the smoke-generating body (11) and communicating with each other, wherein the micropores communicate with the airflow hole (12) to concentrate the aerosol into the airflow hole (12), the pore diameter of the micropores is 50 nm to 20 μm, and the ratio of the total area of ​​the end faces of each of the airflow holes (12) at each end of the smoke-generating body (11) to the surface area of ​​the end where they are located is 1:12 to 1:8, characterized in that the aerosol generating substrate.

19. Including a columnar smoke-generating body (11), The smoke-generating body (11) has a near lip end (A) and a far lip end (B) located at both ends in the axial direction thereof, and the smoke-generating body (11) includes at least two airflow holes (12) that penetrate the near lip end (A) along the axial direction of the smoke-generating body (11), and a plurality of micropores uniformly distributed within the smoke-generating body (11) and communicating with each other, wherein the micropores communicate with the airflow holes (12) to concentrate the aerosol into the airflow holes (12), and the ratio of the total area of ​​the end faces of each of the airflow holes (12) at each end of the smoke-generating body (11) to the surface area of ​​the end where they are located is 1:12 to 1:8, characterized in that the aerosol-generating substrate.

20. A non-combustion heating product comprising a cooling unit (20), a filter tip (30), and an aerosol generating substrate (10) according to any one of claims 1 to 19, wherein the cooling unit (20) is located between the aerosol generating substrate (10) and the filter tip (30), and the near lip end (A) is close to the cooling unit (20).

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