Combustion heat generating type heating cigarette

Abstract

This invention belongs to the field of heated cigarette technology and discloses a combustion-heated cigarette. The combustion-heated cigarette includes a smoke-releasing section, a regulating section, and a filter section. The regulating section is disposed between the smoke-releasing section and the filter section. The regulating section is used for airflow delivery and adjusting the temperature of the aerosol released by the smoke-releasing section. The smoke-releasing section includes an inner core layer, a thermally conductive insulating layer, and a heating layer. The thermally conductive insulating layer wraps around the outer wall of the inner core layer, and the heating layer wraps around the outer wall of the thermally conductive insulating layer. The inner core layer includes tobacco shreds or leaves loaded with a smoke-generating agent. The heating layer includes a combustion-heating material. The thermally conductive insulating layer transfers the heat generated by the combustion of the heating layer to the inner core layer and prevents the smoke generated by the combustion of the heating layer from migrating to the inner core layer. The regulating section can intercept the smoke generated by the combustion of the heating layer from migrating to the filter section. This invention not only ensures the purity of the aerosol but also provides uniform heating, shortens the heat transfer path, and improves heat utilization.

Description

Technical Field

[0001] This invention relates to the field of heated cigarette technology, and more particularly to a combustion-generating heated cigarette. Background Technology

[0002] Heated cigarettes, as an important branch of novel tobacco products, release aerosols to consumers by heating rather than burning the tobacco matrix. Existing heated cigarettes are mainly divided into two categories: electrically heated and combustion-based. Electrically heated cigarettes require dedicated heating equipment, limiting their ease of use. In the field of combustion-based heated cigarettes, existing technologies typically use carbon-based heat sources, which present the following technical problems: First, the heat source is usually located upstream of the tobacco matrix, resulting in a long heat transfer path and low thermal efficiency; second, the smoke generated by the combustion of the heat source easily contaminates the aerosols released from the tobacco matrix. Summary of the Invention

[0003] The purpose of this invention is to provide a combustion-generating heated cigarette that not only ensures aerosol purity but also provides uniform heating, shortens the heat transfer path, and improves heat utilization.

[0004] To achieve this objective, the present invention adopts the following technical solution: A combustion-heated cigarette includes a smoke-releasing section, a regulating section, and a filter section. The regulating section is disposed between the smoke-releasing section and the filter section. The regulating section is used for airflow delivery and regulating the temperature of the aerosol released by the smoke-releasing section. The smoke-releasing section includes an inner core layer, a thermally conductive insulating layer, and a heating layer. The thermally conductive insulating layer is wrapped around the outer wall of the inner core layer, and the heating layer is wrapped around the outer wall of the thermally conductive insulating layer. The inner core layer includes tobacco shreds or leaves loaded with a smoke-generating agent. The heating layer includes a combustion-heating material. The thermally conductive insulating layer is used to transfer the heat generated by the combustion of the heating layer to the inner core layer and to prevent the smoke generated by the combustion of the heating layer from migrating to the inner core layer. The regulating section can intercept the smoke generated by the combustion of the heating layer from migrating to the filter section.

[0005] As an alternative to combustion-heated cigarettes, the heating layer further includes a skeleton carrier, which is fixedly disposed on the outer wall of the heat-conducting insulation layer. The combustion-heating material fills the pores of the skeleton carrier and / or is attached to the skeleton carrier.

[0006] As an optional solution for combustion-generating heated cigarettes, the material of the skeleton carrier includes one or more of carbon fiber, ceramic fiber, glass fiber, and metal fiber, and / or the porosity of the skeleton carrier is 30%-97%.

[0007] As an alternative to combustion-heated cigarettes, the heating layer further includes an ash control agent, which is mixed with the combustion-heating material and filled into the pores of the skeleton carrier, and / or attached to the skeleton carrier.

[0008] As an alternative to combustion-generating heated cigarettes, the ash control agent includes one or more of kaolin, bentonite, halloysite, and water glass.

[0009] As an optional solution for combustion-heated cigarettes, the combustion-heating material includes one or more of tobacco powder, plant fiber, and charcoal materials.

[0010] As an optional solution for combustion-heated cigarettes, the thermally conductive insulation layer material includes one or more of the following: metal, graphene, ceramic, and carbon fiber.

[0011] As an optional solution for combustion-heated cigarettes, the control unit includes a control core and an annular baffle disposed on the outer wall of the control core. The inner diameter of the annular baffle is smaller than the inner diameter of the heating layer, and the outer diameter of the control unit is not smaller than the outer diameter of the heating layer. The annular baffle abuts against the end face of the heating layer.

[0012] As an optional solution for combustion-heated cigarettes, the regulating inner core has a ventilation hole, one end of which is connected to the inner core layer and the other end of which is connected to the filter tip.

[0013] As an optional solution for combustion-heated cigarettes, the regulating inner core has multiple air vents, one end of each air vent is connected to the inner core layer, and the other end of each air vent is connected to the filter tip.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The combustion-heated cigarette provided by this invention has a heating layer and an inner core layer arranged coaxially, with the heating layer wrapped around the outermost layer. The heat generated by the combustion of the heating layer is evenly transferred to the inner core layer through a heat-conducting partition, which shortens the heat transfer path and improves the heat utilization rate.

[0015] The combustion-heated cigarette provided by this invention has a dense heat-conducting barrier that effectively prevents the migration of smoke, odor substances and solid particles generated by the combustion of the heating layer to the inner core layer, ensuring that the aerosol inhaled by consumers only comes from the inner core layer, guaranteeing a pure taste and no combustion odor.

[0016] The combustion-heated cigarette provided by this invention, by setting a regulating part between the smoke release section and the filter section, facilitates the flow of aerosol generated in the inner core layer to the filter section during inhalation, and can intercept the migration of smoke generated by the combustion of the heating layer to the filter section, ensuring that the aerosol inhaled by the consumer comes only from the inner core layer, thus guaranteeing a pure taste. On the other hand, it extends the flow path of the aerosol, making it easier to adjust the temperature of the aerosol released by the smoke release section. Furthermore, it can, to a certain extent, block the spread of combustion from the heating layer to the filter section and prevent the heat generated by the combustion of the heating layer from being transferred to the filter section, avoiding combustion or high temperature affecting the filter section, and helping to ensure normal inhalation for the user.

[0017] The combustion-generating heated cigarette provided by this invention, through the synergistic effect of ash control agent and skeleton carrier, causes the ash in the heating layer to agglomerate after combustion, forming a self-supporting structure that is fixed by the skeleton carrier, making it less likely to fall off and scatter, thus avoiding ash pollution.

[0018] The combustion-heated cigarette provided by this invention can be started using the traditional cigarette lighting method, which conforms to consumer usage habits and does not require a special heating device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of airflow in a combustion-heated cigarette according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of a combustion-heating type heated cigarette in an embodiment of the present invention; Figure 3 This is a schematic diagram of the first structure of the control unit in an embodiment of the present invention; Figure 4 This is a schematic diagram of a second structure of the control unit in an embodiment of the present invention; Figure 5 This is a schematic diagram of the first structural form of the skeleton carrier in an embodiment of the present invention; Figure 6 This is a schematic diagram of a second structural form of the skeleton carrier in an embodiment of the present invention.

[0021] Figure label: 1. Smoke release section; 2. Control section; 3. Filter section; 11. Inner core layer; 12. Thermally conductive insulation layer; 13. Heating layer; 131. Skeleton carrier; 21. Adjustable inner core; 211. Ventilation hole; 22. Annular baffle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] To ensure aerosol purity, uniform heating, shorten the heat transfer path, and improve heat utilization, this embodiment provides a combustion-heated cigarette, which is described below in conjunction with... Figures 1 to 6 The specific content of this embodiment will be described in detail.

[0027] The combustion-heated cigarette provided in this embodiment includes a smoke-releasing section 1, a regulating section 2, and a filter section 3. The regulating section 2 is disposed between the smoke-releasing section 1 and the filter section 3. In this embodiment, the combustion-heated cigarette is assembled into a cigarette by selecting a suitable wrapping material and a suitable wrapping method; no limitations are imposed here. The regulating section 2 is used for airflow delivery and regulating the temperature of the aerosol released by the smoke-releasing section 1. The smoke-releasing section 1 includes an inner core layer 11, a heat-conducting insulating layer 12, and a heating layer 13. The heat-conducting insulating layer 12 is wrapped around the outer wall of the inner core layer 11, and the heating layer 13 is wrapped around the outer wall of the heat-conducting insulating layer 12. The inner core layer 11 includes tobacco shreds or tobacco leaves loaded with a smoke-generating agent, and the heating layer 13 includes a combustion-generating material. The heat-conducting insulating layer 12 is used to transfer the heat generated by the combustion of the heating layer 13 to the inner core layer 11 and to prevent the smoke generated by the combustion of the heating layer 13 from migrating to the inner core layer 11. The control section 2 can intercept the smoke generated by the combustion of the heating layer 13 from migrating to the filter section 3.

[0028] In summary, the combustion-heated cigarette provided in this embodiment has a core-shell structure for its smoke-releasing section 1, which, from the inside out, includes an inner core layer 11, a heat-conducting insulating layer 12, and a heating layer 13. The inner core layer 11 is a smoke-releasing unit composed of tobacco shreds or reconstituted tobacco leaves loaded with a smoke-generating agent. The heat-conducting insulating layer 12 is a dense heat-conducting material layer that tightly wraps around the inner core layer 11. The heat-conducting insulating layer 12 has high thermal conductivity and is used to evenly transfer the heat generated by the combustion of the heating layer 13 to the inner core layer 11, ensuring that the inner core layer 11 is heated evenly, thereby making the release of aerosols more stable and complete. The heat-conducting insulating layer 12 is made of non-combustible material, which effectively prevents the migration of smoke, odor substances, and solid particles generated during the combustion of the heating layer 13 to the inner core layer 11, greatly ensuring the purity of the aerosol inhaled by the consumer, so that the aerosol originates only from the inner core layer 11, avoiding odors and impurities caused by the mixing of combustion products of the heating layer 13. The heating layer 13 is a combustion-generating material wrapped around the heat-conducting insulation layer 12. The material of the heating layer 13 includes combustible biomass or its derivatives. The outer surface of the heating layer 13 is exposed to ambient air and can be ignited. The control unit 2 is located between the smoke release unit 1 and the filter part 3. It is used not only to intercept the smoke generated by the combustion of the heating layer 13 from migrating to the filter part 3, but also to guide the airflow and regulate the temperature of the aerosol released by the inner core layer 11.

[0029] Furthermore, the heating layer 13 also includes a skeleton carrier 131, which is fixedly disposed on the outer wall surface of the thermally conductive insulation layer 12. The presence of the skeleton carrier 131 provides a site for the attachment and filling of the combustion heating material. The combustion heating material fills the pores of the skeleton carrier 131 and / or adheres to the skeleton carrier 131. This filling method not only ensures the stability of the combustion heating material but also enables it to release heat more orderly during combustion.

[0030] Furthermore, the skeleton carrier 131 is made of one or more of the following materials: carbon fiber, ceramic fiber, glass fiber, and metal fiber. Carbon fiber possesses high strength and good thermal conductivity, enabling rapid heat transfer during combustion, while its stable chemical properties ensure reliability under high-temperature conditions. Ceramic fiber exhibits excellent high-temperature resistance and thermal insulation properties, effectively preventing excessive heat loss, improving heat utilization efficiency, and tolerating various chemical reactions generated during combustion. Glass fiber has good corrosion resistance, ensuring stable combustion of the heat-generating material while reducing interference from external factors in the combustion process. Metal fiber possesses excellent thermal conductivity, promoting rapid ignition and uniform combustion of the heat-generating material. These materials can be used individually or in various combinations according to actual needs, leveraging the complementary advantages of different materials to further enhance the performance of the skeleton carrier 131.

[0031] For example, such as Figure 5 and Figure 6 As shown, the holes in the skeleton carrier 131 can be multiple elongated holes formed by parallel arrangement of connecting ribs, multiple mesh holes formed by cross arrangement of connecting ribs, or a mixed hole structure formed by multiple elongated holes formed by parallel arrangement of connecting ribs and multiple mesh holes formed by cross arrangement of connecting ribs.

[0032] Furthermore, the porosity of the skeleton carrier 131 is 30%-97%. When the porosity is within this range, on the one hand, sufficient porosity provides ample filling space for the combustion heating material, ensuring the amount of combustion heating material is filled, thereby releasing enough heat to meet the needs of heating cigarettes. On the other hand, suitable porosity facilitates air circulation inside the skeleton carrier 131, providing sufficient oxygen for the combustion of the combustion heating material, making combustion more complete and stable, and reducing harmful substances produced due to incomplete combustion. At the same time, reasonable porosity can also regulate the heat release rate, avoiding excessively fast or slow heat release, making the release of aerosols more stable and uniform.

[0033] Furthermore, the heating layer 13 also includes an ash control agent, which is mixed with the combustion heating material and fills the pores of the skeleton carrier 131, and / or adheres to the skeleton carrier 131. Through the synergistic effect of the ash control agent and the skeleton carrier 131, the ash from the combustion heating material in the heating layer 13 agglomerates into a self-supporting structure after combustion and is fixed by the skeleton carrier 131, making it less prone to falling off and scattering. This serves two purposes: firstly, it avoids ash contamination, and secondly, it provides insulation for the inner core layer 11. For example, the ash control agent includes one or more of kaolin, bentonite, halloysite, and water glass.

[0034] The combustion heat-generating material includes one or more of the following: smoke powder, plant fiber, and carbonaceous materials. The thermally conductive insulating layer 12 is made of one or more of the following: metal, graphene, ceramic, and carbon fiber.

[0035] Furthermore, the control unit 2 includes a control inner core 21 and an annular baffle 22 disposed on the outer wall of the control inner core 21. The inner diameter of the annular baffle 22 is smaller than the inner diameter of the heating layer 13, and the outer diameter of the control unit 2 is not smaller than the outer diameter of the heating layer 13. The annular baffle 22 abuts against the end face of the heating layer 13. Since the wall thickness of the annular baffle 22 is greater than the wall thickness of the heating layer 13 (in the radial direction), the thicker annular baffle 22 can provide stronger support and stability for the control unit 2, enabling it to withstand various thermal stresses during the use of heated cigarettes, and preventing deformation or damage, thereby ensuring the integrity of the entire heated cigarette structure. The heating layer 13 is the main part that generates heat, while the annular baffle 22 is relatively thick. On the one hand, it can block the spread of combustion from the heating layer 13 to the filter part 3 to a certain extent and prevent the heat generated by the combustion of the heating layer 13 from being transferred to the filter part 3, thus avoiding the filter part 3 from burning or being affected by high temperature, which helps to ensure normal inhalation for the user. On the other hand, it has the effect of intercepting the smoke generated by the combustion of the heating layer 13, so as to ensure that the aerosol released by the inner core layer 11 when heated has a pure taste.

[0036] For example, such as Figure 3 As shown, the regulating inner core 21 has a vent 211, one end of which is connected to the inner core layer 11, and the other end of which is connected to the filter nozzle 3. This single vent 211 design makes the aerosol flow path relatively concentrated and clear. During the suction process, the aerosol can flow smoothly along this specific channel, reducing airflow turbulence and dispersion, thereby ensuring relatively stable aerosol flow rate and velocity.

[0037] For example, such as Figure 4 As shown, the regulating inner core 21 has multiple vent holes 211, one end of which is connected to the inner core layer 11, and the other end of which is connected to the filter tip 3. The presence of multiple vent holes 211 increases the number of aerosol flow channels. During inhalation, the aerosol is diverted through the channels, which has a significant effect on cooling the smoke. In addition, by designing the size, shape, and channel structure of the multiple vent holes 211, the flow rate and velocity distribution of the aerosol can be adjusted, allowing consumers to experience a gentler and more uniform aerosol during inhalation, thus improving inhalation comfort.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A combustion-heated cigarette, characterized in that, The device includes a smoke-releasing section (1), a regulating section (2), and a filter section (3). The regulating section (2) is disposed between the smoke-releasing section (1) and the filter section (3). The regulating section (2) is used for airflow delivery and regulating the temperature of the aerosol released by the smoke-releasing section (1). The smoke-releasing section (1) includes an inner core layer (11), a thermally conductive insulating layer (12), and a heating layer (13). The thermally conductive insulating layer (12) wraps around the outer wall of the inner core layer (11), and the heating layer (13) wraps around the outer wall of the inner core layer (11). The outer wall of the heat-conducting insulating layer (12), the inner core layer (11) includes tobacco shreds or tobacco leaves loaded with a smoke-generating agent, the heating layer (13) includes a combustion heating material, the heat-conducting insulating layer (12) is used to transfer the heat generated by the combustion of the heating layer (13) to the inner core layer (11) and block the smoke generated by the combustion of the heating layer (13) from migrating to the inner core layer (11), and the control unit (2) can intercept the smoke generated by the combustion of the heating layer (13) from migrating to the filter part (3).

2. The combustion-heated cigarette according to claim 1, characterized in that, The heating layer (13) further includes a skeleton carrier (131), which is fixedly disposed on the outer wall surface of the heat-conducting insulation layer (12). The combustion heating material is filled in the pores of the skeleton carrier (131) and / or attached to the skeleton carrier (131).

3. The combustion-heated cigarette according to claim 2, characterized in that, The material of the skeleton carrier (131) includes one or more of carbon fiber, ceramic fiber, glass fiber, and metal fiber, and / or the porosity of the skeleton carrier (131) is 30%-97%.

4. The combustion-heated cigarette according to claim 2, characterized in that, The heating layer (13) also includes an ash control agent, which is mixed with the combustion heating material and filled into the pores of the skeleton carrier (131), and / or attached to the skeleton carrier (131).

5. The combustion-heated cigarette according to claim 4, characterized in that, The ash content regulator includes one or more of kaolin, bentonite, halloysite, and water glass.

6. The combustion-heated cigarette according to claim 1, characterized in that, The combustion heat-generating material includes one or more of the following: smoke powder, plant fiber, and carbonaceous material.

7. The combustion-heated cigarette according to claim 1, characterized in that, The thermally conductive insulating layer (12) is made of one or more of the following materials: metal, graphene, ceramic, and carbon fiber.

8. The combustion-generating heated cigarette according to any one of claims 1-7, characterized in that, The control unit (2) includes a control core (21) and an annular baffle (22) disposed on the outer wall of the control core (21). The inner diameter of the annular baffle (22) is smaller than the inner diameter of the heating layer (13), and the outer diameter of the control unit (2) is not smaller than the outer diameter of the heating layer (13). The annular baffle (22) abuts against the end face of the heating layer (13).

9. The combustion-heated cigarette according to claim 8, characterized in that, The regulating inner core (21) has a vent (211), one end of which is connected to the inner core layer (11), and the other end of which is connected to the filter part (3).

10. The combustion-heated cigarette according to claim 8, characterized in that, The regulating inner core (21) has multiple vent holes (211), one end of each of the multiple vent holes (211) is connected to the inner core layer (11), and the other end of each of the multiple vent holes (211) is connected to the filter part (3).

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