Cigarette pressing cylinder, aerosol generating device and aerosol generating system
By designing an annular pressing element on the inner wall of the cigarette pressing cylinder, the contradiction between porosity and heat transfer performance in the smoking section of heated cigarettes was resolved, thereby improving the nicotine release rate and thermal energy utilization rate, while ensuring smooth diffusion of aerosols and aesthetic appearance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHENGZHOU TOBACCO RES INST OF CNTC
- Filing Date
- 2024-11-11
- Publication Date
- 2026-05-12
AI Technical Summary
Existing heated cigarettes have good smoke diffusion performance but poor heat transfer performance when the porosity of the smoke-generating section is large, and good heat transfer performance but poor smoke diffusion performance when the porosity is small, making it difficult to achieve both.
Design a cigarette pressing cylinder with bottom and/or middle annular pressing elements on the inner wall. The cross-section gradually decreases or remains unchanged to adapt to the smoking section of heated cigarettes, enhance the density, and press the cigarettes through the sloping inner wall to ensure that the deformation of the smoking section is minimized during insertion, thus maintaining porosity and heat transfer performance.
It improves the nicotine release rate and heat energy utilization, prevents tobacco from falling off and aerosol matrix packaging paper from wrinkling, ensures smooth diffusion of aerosol substances, and enhances the user experience of heated cigarettes.
Smart Images
Figure CN122004537A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of heated cigarette technology, specifically relating to a cigarette pressing cylinder, an aerosol generating device, and an aerosol generating system. Background Technology
[0002] Traditional cigarettes, e-cigarettes, heated cigarettes, oral cigarettes, nicotine pouches, and other tobacco products all primarily rely on nicotine delivery as their main consumption characteristic. However, newer tobacco products such as e-cigarettes, heated cigarettes, and nicotine pouches are less harmful to consumers while effectively delivering nicotine, thus gaining increasing popularity. New tobacco products have experienced rapid growth in the international tobacco market in recent years and are a key focus for major tobacco manufacturers. Heated cigarettes, due to their similarity to the smoke characteristics of traditional cigarettes, have seen rapid development in the international market and are expected to become a major tobacco consumer product. Innovations in heated cigarettes mainly focus on the cigarette's structure, heating methods, and the close integration with smoking devices to promote aerosol generation and efficient delivery to consumers.
[0003] In existing technologies, the porosity of the smoke-generating section affects heat transfer and flue gas diffusion. Higher porosity results in better flue gas diffusion but poorer heat transfer. Conversely, lower porosity leads to better heat transfer but poorer flue gas diffusion. Therefore, current smoke-generating section manufacturing processes cannot simultaneously achieve optimal flue gas diffusion and heat transfer performance.
[0004] This application is submitted in order to address the aforementioned issues. Summary of the Invention
[0005] This application provides a cigarette pressing cylinder, which is a hollow cylindrical structure, and its inner wall is provided with: a bottom annular pressing element located at the bottom of the cigarette pressing cylinder, and / or a middle annular pressing element located in the middle of the cigarette pressing cylinder;
[0006] From the top to the bottom of the cigarette clamping cylinder, the cross-sectional area of the hollow portion of the bottom annular clamping element or the middle annular clamping element gradually decreases.
[0007] Preferably, from the top to the bottom of the cigarette clamping cylinder, the cross-sectional perimeter of the hollow portion of the bottom annular clamping element or the middle annular clamping element remains constant or decreases by no more than 5%.
[0008] Preferably, the number of the central annular clamping elements is one or more;
[0009] When there are multiple central annular pressing elements, the multiple cigarette pressing cylinders are arranged axially at intervals from bottom to top.
[0010] Preferably, the cross-section of the bottom annular clamping element or the middle annular clamping element is circular throughout the entire axial direction.
[0011] Preferably, the hollow portion of the topmost bottom annular clamping element or the middle annular clamping element has a circular cross-section.
[0012] Preferably, from the top to the bottom of the cigarette clamping cylinder, the cross-section of the hollow portion of the bottom annular clamping element or the middle annular clamping element changes from an initial circle to a rectangle, ellipse, or racetrack shape.
[0013] Preferably, the ratio of the area of the initial circle to the area of the cigarette receiving cavity is 85% to 98%. The area of the initial circle is larger than the cross-sectional area of the heated cigarette smoke-generating section to facilitate cigarette insertion.
[0014] Preferably, the inner wall of the bottom annular pressing element is sloped to facilitate the insertion of the cigarette and gradually press the cigarette's smoking section in the radial direction.
[0015] Preferably, the height of the bottom annular pressing element is 0.1 to 0.8 times the height of the cigarette pressing cylinder;
[0016] The ratio of the distance A between the topmost annular pressing element and the bottom of the cigarette pressing cylinder to the height B of the cigarette pressing cylinder is 0.2 to 0.8, that is, A / B is 0.2 to 0.8.
[0017] Preferably, the top surface of the bottom annular pressing element and the top surface of the cigarette pressing cylinder are connected by a ramp to facilitate cigarette insertion;
[0018] Preferably, the top surface of the central annular pressing element at the very top is connected to the top surface of the cigarette pressing cylinder by a ramp to facilitate cigarette insertion.
[0019] The second aspect of this application provides an aerosol generating device, wherein the aerosol generating device uses the cigarette pressing cylinder described in any one of the first aspects as the cigarette heating chamber;
[0020] The heating element is disposed on the cigarette pressing cylinder, inside the cigarette pressing cylinder, or outside the cigarette pressing cylinder.
[0021] For example, the heating element is disposed on the side wall around the cigarette pressing cylinder to achieve circumferential heating.
[0022] For example, the heating element is a central heating needle disposed in the cavity inside the cigarette pressing cylinder to achieve central heating.
[0023] For example, the heating element is a circumferential heating element disposed outside the cigarette pressing cylinder to achieve circumferential heating.
[0024] Alternatively, the heating element may be a heating element disposed outside the cigarette pressing cylinder and in the airflow channel upstream of the cigarette pressing cylinder, in order to achieve air heating.
[0025] A third aspect of this application provides an aerosol generation system, the aerosol generation system comprising the aerosol generation device and heated cigarettes described in the second aspect;
[0026] The heated cigarette has a smoke-generating section;
[0027] The smoking section of the heated cigarette is inserted into the cigarette pressing cylinder, and the ratio of the cross-sectional perimeter of the hollow portion of the bottom annular pressing element or the middle annular pressing element to the cross-sectional perimeter of the smoking section of the heated cigarette is 0.95 to 1.0.
[0028] In other words, the cross-sectional perimeter of the hollow portion of the bottom annular pressing element or the middle annular pressing element remains constant and is equal to the perimeter of the smoke-generating section;
[0029] Alternatively, from the top to the bottom of the cigarette pressing cylinder, the cross-sectional perimeter of the hollow portion of the bottom annular pressing element or the middle annular pressing element decreases by no more than 5%, and the cross-sectional perimeter of the hollow portion of the topmost bottom annular pressing element or the middle annular pressing element is equal to the cross-sectional perimeter of the heated cigarette smoke-generating section.
[0030] Preferably, the cross-sectional perimeter of the hollow portion of the bottom annular pressing element or the middle annular pressing element is equal to the cross-sectional perimeter of the smoke-generating section of the heated cigarette.
[0031] The fourth aspect of this application provides a method for increasing the nicotine release rate, using the aerosol generation system described in any of the third aspects.
[0032] Compared with the prior art, the present invention has the following beneficial effects:
[0033] 1. The cigarette pressing cylinder of this application is used to press the smoking section of the cigarette, which can increase the density of the tobacco and prevent the tobacco from falling off the end of the cigarette. This application can change the shape of the cigarette without changing the cigarette manufacturing process, and is compatible with all current cylindrical heated cigarettes.
[0034] 2. In the preferred embodiment, the cross-sectional perimeter of the hollow portion of the bottom annular pressing element or the middle annular pressing element remains constant and equal to the perimeter of the smoke-generating section, or is reduced by no more than 5%. This ensures that the perimeter of the smoke-generating section does not change significantly during deformation, avoiding wrinkles in the cigarette aerosol matrix packaging paper, and thus avoiding problems such as excessively low porosity and unattractive appearance of the smoke-generating section.
[0035] 3. In a preferred embodiment, the inner wall of the bottom annular pressing element is sloped to facilitate cigarette insertion. In another preferred embodiment, from top to bottom, the cross-section of the hollow portion of the bottom or middle annular pressing element changes from an initial circle to a rectangle, ellipse, or racetrack shape. This allows the cross-sectional area to gradually decrease while maintaining a relatively constant perimeter, thus pressing the smoke-generating section in the radial direction.
[0036] 4. After using the aerosol generating device equipped with the cigarette pressing cylinder of this application, the deformation of the smoking section inserted into the cigarette pressing cylinder leads to an increase in the tobacco density in that section, a faster heat conduction rate, an improved thermal energy utilization rate, and an increased nicotine conversion rate and efficiency. Furthermore, the porosity of the downstream section of the smoking section, which experiences less deformation or no deformation, remains unchanged, thus not affecting the diffusion of the generated aerosol in the downstream section. This application denotes the direction of aerosol movement as from upstream to downstream. Upstream refers to the bottom direction of the cigarette pressing cylinder. Downstream refers to the top direction of the cigarette pressing cylinder. Attached Figure Description
[0037] Figure 1 This is a side view of the cigarette clamping cylinder in the X direction according to the first embodiment.
[0038] Figure 2 This is a Y-direction side view of the cigarette clamping cylinder according to the first embodiment.
[0039] Figure 3 This is a top view of the cigarette clamping cylinder according to the first embodiment.
[0040] Figure 4 This is a perspective view of the cigarette clamping cylinder according to the first embodiment.
[0041] Figure 5 A schematic diagram of an aerosol generating device equipped with a first-type cigarette pressing cylinder and central heating.
[0042] Figure 6 A schematic diagram of an aerosol generating device equipped with a first type of cigarette pressing cylinder and circumferential heating.
[0043] Figure 7 This is a side view of the cigarette clamping cylinder in the X direction according to the second embodiment.
[0044] Figure 8 A schematic diagram of a cigarette pressing cylinder and a circumferentially heated aerosol generating device equipped with the second embodiment.
[0045] List of reference numerals in the attached diagram:
[0046] 1. Cigarette pressing cylinder; 2. Bottom annular pressing element; 3. Middle annular pressing element; 4. Central heating element; 5. Circumferential heating element. Detailed Implementation
[0047] The present invention will now be described in further detail with reference to the embodiments.
[0048] Those skilled in the art will understand that the following embodiments are for illustrative purposes only and should not be construed as limiting the scope of the invention. Where specific techniques or conditions are not specified in the embodiments, they are performed in accordance with the techniques or conditions described in the literature in the field or according to the product instructions. Materials or equipment whose manufacturers are not specified are all conventional products that can be obtained by purchase.
[0049] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” to another element, it can be directly connected to the other element, or there may be an intermediate element. Furthermore, the term “connected” as used herein can include wireless connections.
[0050] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. The terms "inner," "upper," "lower," etc., indicate the orientation or state relationship based on the orientation or state relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.
[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0052] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.
[0053] Figure 1This is a side view of the cigarette clamping cylinder in the X direction according to the first embodiment.
[0054] Figure 2 This is a Y-direction side view of the cigarette clamping cylinder according to the first embodiment.
[0055] Figure 3 This is a top view of the cigarette clamping cylinder according to the first embodiment.
[0056] Figure 4 This is a perspective view of the cigarette clamping cylinder according to the first embodiment.
[0057] Figure 1-4 As can be seen, the cigarette pressing cylinder is a hollow cylindrical structure, and its inner wall is provided with a bottom annular pressing element located at the bottom of the cigarette pressing cylinder. From the top to the bottom of the cigarette pressing cylinder, the cross-sectional area of the hollow portion of the bottom annular pressing element gradually decreases. The circumference of the cross-section of the hollow portion of the bottom annular pressing element remains constant and is equal to the circumference of the smoking section. From the top to the bottom of the cigarette pressing cylinder, the cross-section of the bottom annular pressing element changes from an initial circle to a rectangle. The inner wall of the bottom annular pressing element is sloping. In other words, the bottom annular pressing element has a cylindrical structure, and its inner hollow structure is an inverted frustum-shaped structure with a round upper part and a square lower part.
[0058] Preferably, the bottom annular clamping element and the middle annular clamping element are made of elastic materials.
[0059] Figure 5 This is a schematic diagram of an aerosol generating device equipped with a first type of cigarette pressing cylinder and central heating. The aerosol generating device uses the cigarette pressing cylinder as the cigarette heating chamber; the heating element is a central heating element located in the middle of the cigarette pressing cylinder.
[0060] Figure 6 This is a schematic diagram of an aerosol generating device equipped with a first type of cigarette pressing cylinder and circumferential heating. The aerosol generating device uses the cigarette pressing cylinder as the cigarette heating chamber; the heating element is a circumferential heating element disposed around the cigarette pressing cylinder.
[0061] Figure 7 This is a side view of the cigarette clamping cylinder in the X direction according to the second embodiment.
[0062] Figure 8 A schematic diagram of a cigarette pressing cylinder and a circumferentially heated aerosol generating device equipped with the second embodiment.
[0063] Figure 7-8As can be seen, the cigarette pressing cylinder is a hollow cylindrical structure, and its inner wall is provided with a central annular pressing element located in the middle of the cigarette pressing cylinder. There are multiple central annular pressing elements, which are axially spaced from the bottom to the top of the cigarette pressing cylinder. From the top to the bottom, the cross-sectional area of the hollow portion of the central annular pressing element gradually decreases.
[0064] Specifically, the central annular pressing element is a sealing ring. The outer ring of the sealing ring is tightly fitted against the inner wall of the cigarette pressing cylinder, and the inner ring of the sealing ring is rectangular, but it can also be elliptical or racetrack-shaped. The sealing ring has a certain degree of elasticity, and the cross-sectional area of the inner rings of multiple sealing rings gradually decreases from top to bottom to facilitate the insertion of the smoking section and radial pressing. The perimeter of the inner ring cross-section is approximately equal to the perimeter of the cross-section of the heated cigarette's smoking section.
Claims
1. A cigarette pressing cylinder, characterized in that, The cigarette pressing cylinder is a hollow cylindrical structure, and its inner wall is provided with: a bottom annular pressing element located at the bottom of the cigarette pressing cylinder, and / or a middle annular pressing element located in the middle of the cigarette pressing cylinder; From the top to the bottom of the cigarette clamping cylinder, the cross-sectional area of the hollow portion of the bottom annular clamping element or the middle annular clamping element gradually decreases.
2. The cigarette clamping cylinder according to claim 1, characterized in that, From the top to the bottom of the cigarette clamping cylinder, the cross-sectional perimeter of the hollow portion of the bottom annular clamping element or the middle annular clamping element remains constant or decreases by no more than 5%.
3. The cigarette pressing cylinder according to claim 1, characterized in that, From the top to the bottom of the cigarette clamping cylinder, the cross-section of the hollow portion of the bottom annular clamping element or the middle annular clamping element changes from an initial circle to a rectangle, an ellipse, or a racetrack shape.
4. The cigarette clamping cylinder according to claim 1, characterized in that, The inner wall of the bottom annular clamping element is sloped.
5. The cigarette pressing cylinder according to claim 1, characterized in that, The number of the central annular clamping elements may be single or multiple; When there are multiple central annular pressing elements, the multiple cigarette pressing cylinders are arranged axially at intervals from bottom to top.
6. The cigarette pressing cylinder according to claim 1, characterized in that, The height of the bottom annular pressing element is 0.1 to 0.8 times the height of the cigarette pressing cylinder; The distance between the top surface of the central annular pressing element and the bottom of the cigarette pressing cylinder is 0.2 to 0.8 times the height of the cigarette pressing cylinder. The top surface of the bottom annular pressing element is connected to the top surface of the cigarette pressing cylinder by a ramp to facilitate cigarette insertion; The top surface of the central annular pressing element at the very top is connected to the top surface of the cigarette pressing cylinder by a ramp to facilitate cigarette insertion.
7. An aerosol generating device, characterized in that, The aerosol generating device uses the cigarette pressing cylinder according to any one of claims 1 to 6 as the cigarette heating chamber; The heating element is disposed on the cigarette pressing cylinder, inside the cigarette pressing cylinder, or outside the cigarette pressing cylinder.
8. An aerosol generation system, characterized in that, The aerosol generation system includes the aerosol generation device as described in claim 7 and heated cigarettes; The heated cigarette has a smoke-generating section; The smoking section of the heated cigarette is inserted into the cigarette pressing cylinder, and the ratio of the cross-sectional perimeter of the hollow portion of the bottom annular pressing element or the middle annular pressing element to the cross-sectional perimeter of the smoking section of the heated cigarette is 0.95 to 1.
0.
9. The aerosol generation system according to claim 8, characterized in that, The cross-sectional perimeter of the hollow portion of the bottom annular pressing element or the middle annular pressing element is equal to the cross-sectional perimeter of the smoking section of the heated cigarette.
10. A method for increasing the nicotine release rate, characterized in that, Use the aerosol generation system according to any one of claims 8-9.