Aerosol-generating products

Abstract

The present invention discloses an aerosol generating product, wherein the cooling section comprises a hollow tube body and an air inlet channel, and the air inlet channels are provided. The plurality of air inlet channels are respectively inclined toward the radial diameter direction of the hollow tube body, and the extension direction of the air inlet channel forms a predetermined angle θ with the radial diameter direction of the hollow tube body so that the aerosol generating product forms a vortex airflow in the hollow tube body under the inhalation state. During inhalation, air enters the interior of the matrix section and the cooling section from the matrix section and the air inlet channel at the same time. The air entering the cooling section forms a vortex and preferentially flows close to the inner wall of the cooling section, and wraps part of the aerosol, so that the aerosol flows along the middle position of the cooling section, avoiding contact between the aerosol and the inner wall of the cooling section, reducing the adhesion of the aerosol to the inner wall surface, and the amount of aerosol inhaled by the user will not be reduced, thereby improving the inhalation experience, and having a good cooling effect, avoiding the high temperature aerosol from burning the mouth and affecting the consumer's inhalation experience.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol products, and in particular to an aerosol generating product. Background Art

[0002] Aerosol-generating products are generally cylindrical and typically consist of a filter segment, a cooling segment, a cigarette core segment, and cigarette paper. In heat-not-burn (HBN) applications, a heating element is heated to a high temperature to bake the aerosol-generating matrix in the cigarette core segment, causing it to release nicotine, flavor components, and other substances. The filter segment of the aerosol-generating product is then inhaled, allowing air to enter the cigarette core segment.

[0003] Because aerosol-generating products are generally short and the core segment can reach temperatures exceeding 200°C during operation, the design of the cooling section is crucial. Conventional cooling section designs typically employ circumferential air inlet holes. However, this design causes the aerosol generated by the core segment to adhere to the inner surface of the cooling section as it passes through it, reducing the nicotine content in the aerosol and the proportion of aerosol that can be inhaled, resulting in a poor user experience. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an aerosol generating product.

[0005] The technical solution adopted by the present invention to solve its technical problems is: constructing an aerosol generating product, including a cooling section, a filter section and a substrate section for generating aerosol, wherein the cooling section is arranged between the substrate section and the filter section, and the cooling section includes a hollow tube body and an air intake channel opened on the hollow tube body. There are multiple air intake channels, and the multiple air intake channels are respectively inclined toward the radial diameter direction of the hollow tube body. The extension direction of the air intake channel forms a predetermined angle θ with the radial diameter direction of the hollow tube body so that a vortex airflow is formed in the hollow tube body of the aerosol generating product in the inhalation state.

[0006] Furthermore, the air inlet channel is in the shape of a long strip extending along the axial direction of the hollow tube body, and the side length of the air inlet channel along the axial direction of the hollow tube body is greater than the side length along the circumferential direction of the hollow tube body.

[0007] Furthermore, the air inlet passage is in the form of a plurality of holes arranged at intervals along the axial direction of the hollow tube body.

[0008] Furthermore, the hollow tube has a first end and a second end axially opposite to each other, the first end is used to connect with the matrix segment, and the second end is used to connect with the filter segment;

[0009] The outer diameter of the hollow tube is D, and the distance from the air inlet passage close to the first end to the first end is L1; wherein, the relationship between D and L1 is 0≤L1≤D.

[0010] Furthermore, the hollow tube body includes a first tube segment and a second tube segment connected axially; the inner diameter of the first tube segment is D1, and the inner diameter of the second tube segment is D2;

[0011] Among them, the relationship between D1 and D2 is: D2≤D1.

[0012] Furthermore, the axial length of the second pipe section is H;

[0013] Among them, the relationship between H and D is: H≤D.

[0014] Furthermore, the predetermined angle θ formed by each of the air inlet passages and the radial diameter of the hollow tube is 5°<θ<71°.

[0015] Furthermore, the wall thickness of the hollow tube is 0.2-1.5 mm.

[0016] Furthermore, the air intake passages are opened obliquely in the same direction, which is clockwise or counterclockwise.

[0017] Furthermore, the extension direction of the air inlet channel is inclined toward the filter segment.

[0018] The implementation of the present invention has the following beneficial effects: the cooling section includes a hollow tube body and an air inlet channel, the air inlet channel is arranged to penetrate the hollow tube body at an angle toward the radial diameter direction of the hollow tube body, and the air inlet channel forms a predetermined angle θ with the radial diameter of the hollow tube body through the outer opening of the air inlet channel. When the user inhales the filter section, air enters from the matrix section and the various air inlet channels of the cooling section at the same time. The air entering the cooling section from the predetermined angle θ preferentially adheres to the inner wall of the cooling section to form a vortex flow, and can wrap the aerosol entering the cooling section from the matrix section, so that the aerosol flows along the central area of ​​the cooling section, reducing contact with the inner wall of the cooling section, ensuring the nicotine content in the aerosol, improving user satisfaction, and having a good cooling effect, avoiding the situation where the high temperature aerosol burns the mouth and affects the user's smoking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0020] Figure 1 is a schematic structural diagram of an aerosol generating article according to a first embodiment of the present invention;

[0021] Figure 2is a schematic structural diagram of the cooling section of the aerosol generating article of the first embodiment;

[0022] Figure 3 yes Figure 2 A longitudinal cross-sectional view of the cooling section in FIG.

[0023] Figure 4 yes Figure 2 A transverse cross-sectional view of the cooling section in FIG.

[0024] Figure 5 This is one of the air flow trajectory diagrams entering from the cooling section in the first embodiment;

[0025] Figure 6 This is the second diagram of the air flow trajectory entering from the cooling section in the first embodiment;

[0026] Figure 7 is a top view of the air flow trajectory entering from the cooling section in the first embodiment;

[0027] Figure 8 is a diagram of the aerosol flow trajectory from the substrate segment to the filter segment in the first embodiment;

[0028] Figure 9 is a top view of aerosol flow from the substrate segment to the filter segment in the first embodiment;

[0029] Figure 10 is a flow trajectory diagram of aerosol and air mixture in the first embodiment;

[0030] Figure 11 is a top view of the mixed flow of aerosol and air flow in the first embodiment;

[0031] Figure 12 is a schematic structural diagram of an aerosol generating article according to a second embodiment of the present invention;

[0032] Figure 13 is a schematic structural diagram of the cooling section of the second embodiment;

[0033] Figure 14 This is a longitudinal cross-sectional view of the cooling section in the second embodiment.

[0034] Figure 15 is a schematic structural diagram of an aerosol generating article according to a third embodiment of the present invention;

[0035] Figure 16 is a schematic structural diagram of a cooling section of the aerosol generating article in the third embodiment;

[0036] Figure 17 is a longitudinal sectional view of the cooling section of the third embodiment;

[0037] Figure 18This is a flow trajectory diagram of air entering from the cooling section in the third embodiment:

[0038] Figure 19 is a top view of the air flow trajectory entering from the cooling section in the third embodiment;

[0039] Figure 20 FIG3 is a diagram of the aerosol flow trajectory from the substrate segment to the filter segment in the third embodiment;

[0040] Figure 21 is a top view of the aerosol flow trajectory from the substrate segment to the filter segment in the third embodiment;

[0041] Figure 22 is a diagram of the mixed flow trajectory of aerosol and air in the third embodiment;

[0042] Figure 23 FIG. 4 is a top view of the mixed flow of aerosol and air flow in the third embodiment. DETAILED DESCRIPTION

[0043] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0044] First embodiment

[0045] like Figures 1 to 3 As shown, the present invention shows an aerosol-generating product, which is roughly cylindrical and may include a cooling section 10 , a substrate section 20 and a filter section 30 . The cooling section 10 may be arranged between the substrate section 20 and the filter section 30 .

[0046] The substrate segment 20 may include an aerosol-generating substrate and a susceptor adapted for use with the aerosol-generating substrate. The susceptor may be disposed around, embedded within, or buried within the aerosol-generating substrate. The susceptor may heat by electromagnetic induction or resistive heating. The susceptor may be made of iron-nickel alloy, ferrite, ferromagnetic steel, or stainless steel.

[0047] The aerosol-generating substrate includes but is not limited to tobacco materials or non-tobacco materials. The form of the aerosol-generating substrate may include but is not limited to fibers or particles.

[0048] Preferably, the filter segment 30 is used to filter tar, suspended particles, etc. in the aerosol, thereby reducing unwanted impurities in the aerosol inhaled by the consumer.

[0049] Combine Figures 2 to 4As shown, the cooling section 10 may include a hollow tube body 11 and an air inlet channel 121. The air inlet channel 121 is inclined toward the radial diameter direction of the hollow tube body 11. The extension direction of the air inlet channel 121 forms a predetermined angle θ with the radial diameter direction of the hollow tube body 11 so that a vortex airflow is formed in the hollow tube body 11 of the aerosol generating product when it is inhaled.

[0050] There are multiple air inlet channels 121 , which are spaced apart from each other along the circumference of the hollow tube 11 .

[0051] Preferably, the predetermined angle θ is 5°<θ<71°. Preferably, the predetermined angle θ may be 35°.

[0052] like Figure 4 As shown, the air inlet channel 121 is located at one end of the outer wall of the hollow tube body 11 to form an air inlet end, and the air inlet channel 121 is located at one end of the inner wall of the hollow tube body 11 to form an air outlet end. The line connecting the air inlet end and the air outlet end is the first line a, and the line connecting the air inlet end and the axis of the hollow tube body 11 is the second line b. The predetermined angle θ formed by the intersection of the first line a and the second line b is 5°<θ<71°.

[0053] The hollow tube 11 is circular and has a uniform cross-sectional dimension at any axial location. Preferably, the hollow tube 11 is made of materials including, but not limited to, cellulose acetate and polylactic acid. Preferably, the wall thickness of the hollow tube 11 is 0.2 to 1.5 mm.

[0054] The air inlet passages 121 are in the form of a plurality of holes spaced apart in the axial direction of the hollow tube 11. The air inlet passages 121 are in at least two layers, or more than two layers.

[0055] Preferably, each layer of the air inlet channel group 12 may be provided with four air inlet channels 121. The four air inlet channels 121 are arranged at intervals and angled in the radial direction of the hollow tube body 11, or at intervals and angled in the axial direction of the hollow tube body 11, to ensure that vortices are formed when the airflow enters. The multiple air inlet channels 121 are inclined in the same direction, which can be clockwise or counterclockwise.

[0056] Preferably, the hollow tube 11 has a first end and a second end that are axially opposite to each other, the first end is used to connect with the matrix segment 20 , and the second end is used to connect with the filter segment 30 .

[0057] The outer diameter of the hollow tube 11 is D, the distance from the air inlet channel 121 near the first end to the first end is L1; the distance between any two adjacent layers of air inlet channels 121 is L;

[0058] Among them, the relationship between D and L1 is 0≤L1≤D; the relationship between L and L1 is: L1≤L.

[0059] At least one layer of air inlet channel 121 is close to the first end of the hollow tube body 11, that is, close to the matrix segment 20. In the suction state, air can enter the hollow tube body 11 through the air inlet channel 121 to form a vortex, which wraps the aerosol entering the hollow tube body 11 through the matrix segment 20, so that the aerosol has less contact with the inner wall surface of the hollow tube body 11, thereby preventing the aerosol from adhering to the inner wall surface of the hollow tube body 11.

[0060] For example, Figure 3 As shown, the three layers of air intake channel groups 12 spaced apart from the first end of the hollow tube 11 to the second end thereof can be defined as a first-layer air intake channel group, a second-layer air intake channel group, and a third-layer air intake channel group, respectively. The distance between the first-layer air intake channel group and the first end of the hollow tube 11 is L1, the distance between the second-layer air intake channel group and the first-layer air intake channel group, and the distance between the third-layer air intake channel group and the second-layer air intake channel group are both L, and L is greater than or equal to L. Of course, the distance L between any two adjacent layers of air intake channel groups 12 can be equal or unequal, and can be selected and set according to actual needs, and is not specifically limited here. The distance between the first-layer air inlet channel 121 and the first end is L1, and the relationship between D and L1 is 0≤L1≤D. The distance between the first end and the first-layer air inlet channel 121 is less than the cross-sectional length of the hollow tube 11. Therefore, the structural arrangement of minimizing the distance between the first-layer air inlet channel 121 and the first end minimizes contact between the aerosol and the inner wall of the hollow tube 11 upon entry, preventing excessive adhesion of the aerosol to the inner wall of the hollow tube 11. The distance between the two-layer air inlet channel groups 12 can be the distance between the geometric centers of the air inlet channels 121 of the two-layer air inlet channel groups 12. This multi-layered structure of air inlet channels 121 maintains a constant initial temperature throughout the hollow cooling section 10 and stabilizes the air flow direction, ensuring that aerosol entering the cooling section 10 remains enclosed.

[0061] The air inlet channel 121 is tilted toward the radial diameter direction of the hollow tube body 11. The extension direction of the air inlet channel 121 forms a predetermined angle θ with the radial diameter direction of the hollow tube body 11. When the filter section 30 is inhaled, air enters the interior of the matrix section 20 and the cooling section 10 from the air inlet channel 121 of the matrix section 20 and the cooling section 10 at the same time. Figures 5 to 7 As shown, in the suction state, the air entering from each air inlet channel 121 first adheres to the inner wall of the cooling section 10 to form a vortex and flows into the filter section 30. Figures 8 to 11As shown, the aerosol entering the cooling section 10 from the matrix section 20 preferentially flows along the middle position of the cooling section 10. The aerosol is in a wrapped state, which reduces the contact between the aerosol and the inner wall of the hollow tube 11 and prevents the aerosol from excessively adhering to the inner wall of the hollow tube 11. The nicotine content in the aerosol is ensured, which can improve user satisfaction and has a good cooling effect, thereby preventing the high-temperature aerosol from burning the mouth and affecting the user's smoking experience.

[0062] Second embodiment

[0063] See Figure 12 As shown, the present invention shows an aerosol-generating product, which is cylindrical and may include a cooling section 10 , a substrate section 20 and a filter section 30 , wherein the cooling section 10 is arranged between the substrate section 20 and the filter section 30 .

[0064] The aerosol-generating article of this embodiment differs from the aerosol-generating article of the first embodiment mainly in that the cooling section 10 is different.

[0065] like Figures 13 and 14 As shown, the air inlet channel 121 of the cooling section 10 is in the shape of a long strip extending along the axial direction of the hollow tube body 11 , and the side length of the air inlet channel 121 along the axial direction of the hollow tube body 11 is greater than the side length along the circumferential direction of the hollow tube body 11 .

[0066] Preferably, the air inlet channels 121 are provided in only one layer and can only be arranged at intervals inclined toward the radial diameter direction of the hollow tube body 11 .

[0067] The side length of the air inlet channel 121 along the axial direction of the hollow tube 11 can be greater than half the axial length of the hollow tube 11 , so that air can enter the interior of the cooling section 10 and wrap the aerosol from the matrix section 20 .

[0068] Air can enter the hollow tube body 11 through the long air inlet channel 121 and form a vortex, wrapping the aerosol entering the hollow tube body 11 through the matrix segment 20, so that the aerosol has less contact with the inner wall surface of the hollow tube body 11, thereby preventing the aerosol from adhering to the inner wall surface of the hollow tube body 11.

[0069] The above-mentioned air inlet channel 121 is inclined toward the radial diameter direction of the hollow tube body 11, and the extension direction of the air inlet channel 121 forms a predetermined angle θ with the radial diameter direction of the hollow tube body 11. When the filter section 30 is sucked, the air enters the interior of the matrix section 20 and the cooling section 10 from the air inlet channels 121 of the matrix section 20 and the cooling section 10 at the same time. The air entering from each air inlet channel 121 preferentially adheres to the inner wall of the cooling section 10 to form a vortex and flows to the filter section 30. The aerosol entering the cooling section 10 from the matrix section 20 preferentially flows along the middle position of the cooling section 10. The aerosol is in a wrapped state, reducing contact with the inner wall of the hollow tube body 11 and reducing the adhesion of the aerosol to the inner wall, so that the amount of aerosol inhaled by the consumer will not be reduced, which can improve the smoking experience. At the same time, the cooling section 10 can provide a good cooling effect to prevent the aerosol with a higher temperature from affecting the consumer's smoking experience.

[0070] Furthermore, in order to prevent the aerosol in the cooling section 10 from overflowing from the air inlet channel 121 , the outer periphery of the cooling section 10 may be wrapped with a layer of highly air-permeable tipping paper.

[0071] Third embodiment

[0072] See Figure 15 As shown, the present invention shows an aerosol-generating product, which is cylindrical and may include a cooling section 10 , a substrate section 20 and a filter section 30 . The cooling section 10 may be arranged between the substrate section 20 and the filter section 30 .

[0073] Based on the first and second embodiments, the cooling section 10 of the aerosol generating product further has the following structural arrangement.

[0074] Combine Figures 16 and 17 As shown, the hollow tube body 11 includes a first tube section 111 and a second tube section 112 connected axially. The inner diameter of the first tube section 111 is D1, and the inner diameter of the second tube section 112 is D2. The relationship between D1 and D2 is: D2≤D1.

[0075] Furthermore, the axial length of the second pipe section 112 is H; wherein the relationship between H and D is: H≤D.

[0076] The inner diameter of the second tube segment 112 is smaller than that of the first tube segment 111 . When the user inhales the filter segment 30 , the aerosol generated by the heating of the matrix segment 20 enters the first tube segment 111 from the second tube segment 112 with a smaller inner diameter and inertially enters along the center of the first tube segment 111 .

[0077] like Figures 18 and 19As shown, in the inhalation state, the air entering the cooling section 10 from each air inlet channel 121 first adheres to the inner wall of the hollow tube 11 to form a vortex and flows toward the filter section 30, thereby enveloping the aerosol entering the cooling section 10 from the second tube section 112. Figures 20 to 23 As shown, the aerosol entering the cooling section 10 from the matrix section 20 preferentially flows along the middle area of ​​the cooling section 10. The aerosol is in a wrapped state, which reduces the contact with the inner wall of the cooling section 10. This can more effectively reduce the adhesion of the aerosol to the inner wall of the cooling section 10, ensure the nicotine content in the aerosol, and improve user satisfaction. At the same time, it has a good cooling effect, avoiding the situation where the high temperature aerosol burns the mouth and affects the user's smoking experience.

[0078] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. An aerosol generating article comprising a cooling section, a filter section, and a substrate section for generating aerosol, wherein the cooling section is disposed between the substrate section and the filter section, and wherein: The cooling section includes a hollow tube body and an air inlet channel opened on the hollow tube body. There are multiple air inlet channels, and the multiple air inlet channels are respectively inclined toward the radial diameter direction of the hollow tube body. The extension direction of the air inlet channel forms a predetermined angle θ with the radial diameter direction of the hollow tube body so that the aerosol generating product forms a vortex airflow in the hollow tube body under the inhalation state; the predetermined angle θ formed by each of the air inlet channels and the radial diameter direction of the hollow tube body is 5°<θ<71°.

2. The aerosol-generating article according to claim 1, wherein The air inlet passage is in the shape of an elongated strip extending in the axial direction of the hollow tube body, and the side length of the air inlet passage in the axial direction of the hollow tube body is greater than the side length in the circumferential direction of the hollow tube body.

3. The aerosol-generating article according to claim 1, wherein The air inlet passage is in the form of a plurality of holes arranged at intervals along the axial direction of the hollow tube body.

4. The aerosol-generating article according to claim 1, wherein The hollow tube has a first end and a second end axially opposite to each other, the first end is used to connect with the matrix segment, and the second end is used to connect with the filter segment; The outer diameter of the hollow tube is D, and the distance from the air inlet passage close to the first end to the first end is L1; wherein, the relationship between D and L1 is 0≤L1≤D.

5. The aerosol-generating article according to any one of claims 2 to 4, wherein: The hollow tube body includes a first tube segment and a second tube segment connected axially; the inner diameter of the first tube segment is D1, and the inner diameter of the second tube segment is D2; Among them, the relationship between D1 and D2 is: D2≤D1.

6. The aerosol-generating article according to claim 5, wherein The axial length of the second pipe section is H; Among them, the relationship between H and D is: H≤D.

7. The aerosol-generating article according to claim 1, wherein The wall thickness of the hollow tube is 0.2-1.5 mm.

8. The aerosol-generating article of claim 1, wherein The air inlet passages are opened obliquely in the same direction, which is clockwise or counterclockwise.

9. The aerosol-generating article of claim 1 , wherein: An extending direction of the air inlet channel is inclined toward the filter segment.

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