A self-heating cigarette

Abstract

This invention relates to the field of heated cigarette technology, specifically disclosing a self-heating cigarette. The initiating layer has an airflow channel communicating with the outside air. A first heating material layer is encapsulated within a heat-conducting pipe, one end of which is located within the initiating layer. The initiating layer is configured to melt one end of the heat-conducting pipe, creating a crack. The airflow channel can then supply air into the first heating material layer through the crack. The first heating material layer can undergo an exothermic reaction with the air. The heat-conducting pipe is vertically positioned within the tobacco segment. During smoking, the initiating layer is triggered to melt one end of the heat-conducting pipe, creating a crack. At this time, the airflow channel can supply air into the first heating material layer through the crack, causing the vertically positioned first heating material layer to gradually come into contact with the air. A step-by-step exothermic reaction occurs between the two, achieving long-term continuous control of the exothermic heat. The heat released by the reaction enables efficient atomization of the tobacco segment, satisfying the smoking needs.

Description

Technical Field

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

[0002] Heated cigarettes are a new type of tobacco product that releases smoke by heating a thin sheet of tobacco containing a "smoke-generating agent". They typically use non-combustion heating (below 500°C) to release aerosols from the tobacco material, thus avoiding the release of large amounts of toxic and harmful substances during the high-temperature decomposition of the tobacco material. Compared with traditional combustion cigarettes, heated non-combustion cigarettes have the advantages of less environmental pollution and less harm to smokers without changing the traditional "smoking" habit.

[0003] Based on different heating methods, heated cigarettes can be divided into electric heating, carbon heating, and physicochemical reaction heating types. Self-heating cigarettes belong to the physicochemical reaction type, which uses the heat generated by the physical and chemical reactions of the heating material as a heat source to heat the tobacco material. Its characteristic is that the heat for heating the tobacco comes from physicochemical reactions, such as the heat of crystallization generated during the crystallization process of crystalline substances, the heat of reaction generated by acid-base reactions, and the heat of reaction generated by oxidation-reduction. However, existing self-heating cigarettes lack effective heat management methods when heating tobacco materials, making heat control difficult. The exothermic reaction is too rapid, making it difficult to continuously heat the tobacco material for a long time, thus affecting the consumer's smoking experience. Summary of the Invention

[0004] The purpose of this invention is to provide a self-heating cigarette to solve the problem that existing self-heating cigarettes have difficulty in continuously controlling the heat released from the tobacco material when heating it, which affects the smoking experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides a self-heating cigarette, comprising:

[0007] The initiation layer is provided with an airflow channel communicating with the outside air;

[0008] A first heating material layer and a heat-conducting pipe, wherein the first heating material layer is encapsulated within the heat-conducting pipe, one end of the heat-conducting pipe is located within the initiation layer, and the initiation layer is configured to melt one end of the heat-conducting pipe to create a crack, and the airflow channel can deliver air into the first heating material layer through the crack, and the first heating material layer can undergo an exothermic reaction with the air.

[0009] The filter section and the tobacco section are arranged in a vertical direction, with the heat-conducting pipe disposed within the tobacco section. The filter section, the initiation layer, and the tobacco section are arranged sequentially from top to bottom.

[0010] As a preferred technical solution for the above-mentioned self-heating cigarette, the initiation layer includes a second heating material layer and an initiation solution, one end of the heat-conducting tube is located in the second heating material layer, and the initiation solution can undergo an exothermic reaction with the second heating material layer.

[0011] As a preferred technical solution for the aforementioned self-heating cigarette, the self-heating cigarette further includes a flavor capsule, which is disposed on the top of the second heating material layer, and the initiating solution is disposed inside the flavor capsule.

[0012] As a preferred technical solution for the above-mentioned self-heating cigarette, the self-heating cigarette further includes forming paper, which is fixedly sleeved on the filter section, the flavor capsule, the second heating material layer, and the outer peripheral surface of the tobacco section.

[0013] As a preferred technical solution for the above-mentioned self-heating cigarette, the forming paper is provided with a vent hole at the position corresponding to the flavor capsule. The vent hole connects the airflow channel with the outside air. The self-heating cigarette also includes a sealing gasket, which is used to seal the vent hole.

[0014] As a preferred technical solution for the aforementioned self-heating cigarette, the sealing gasket is made of an airtight material.

[0015] As a preferred technical solution for the aforementioned self-heating cigarette, the heat-conducting pipe contains a low-melting-point alloy material, and the low-melting-point alloy material is at least disposed in the contact portion between the heat-conducting pipe and the second heating material layer.

[0016] As a preferred technical solution for the aforementioned self-heating cigarette, the initiation solution is water, and the second heating material layer is calcium oxide.

[0017] As a preferred technical solution for the aforementioned self-heating cigarette, the first heating material layer is composed of at least aluminum powder, iron powder, activated carbon, and sodium chloride solid.

[0018] As a preferred technical solution for the aforementioned self-heating cigarette, the centerline of the heat-conducting pipe coincides with the centerline of the tobacco segment.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention provides a self-heating cigarette, comprising: an initiation layer, a first heating material layer, a heat-conducting pipe, a filter section, and a tobacco section. The initiation layer has an airflow channel communicating with the outside air. The first heating material layer is encapsulated within the heat-conducting pipe, with one end of the heat-conducting pipe located within the initiation layer. The initiation layer is configured to melt one end of the heat-conducting pipe to create a crack. The airflow channel can deliver air into the first heating material layer through the crack. The first heating material layer can undergo an exothermic reaction with the air. The heat-conducting pipe is vertically disposed within the tobacco section. The filter section, the initiation layer, and the tobacco section are arranged sequentially from top to bottom. With this setup, when a consumer inhales the self-heating cigarette, the trigger layer melts one end of the heat-conducting tube, creating a crack. At this time, the airflow channel can deliver air into the first heating material layer through the crack, causing the first heating material layer, which is arranged vertically, to gradually come into contact with the air. A step-by-step triggering exothermic reaction occurs between the two, thereby promoting the staged continuous exothermic reaction to achieve long-term continuous control of the exothermic heat. The heat released by the reaction enables the tobacco segment to achieve full and efficient atomization in a heated but non-combustion state, satisfying the consumer's smoking needs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the self-heating cigarette provided by the present invention.

[0022] in:

[0023] 1. Airflow channel; 2. First heating material layer; 3. Heat-conducting pipe; 4. Filter section; 5. Tobacco section; 6. Second heating material layer; 7. Bursting bead; 8. Ventilation hole. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements 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.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0026] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0027] Unless otherwise expressly specified and limited, "above" or "below" a 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 a second feature includes the first feature 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" of a second feature includes the first feature 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.

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 As shown, this embodiment provides a self-heating cigarette, which includes: an initiation layer, a first heating material layer 2, a heat-conducting pipe 3, a filter section 4, and a tobacco section 5. The initiation layer is provided with an airflow channel 1 that communicates with the outside air. The first heating material layer 2 is encapsulated in the heat-conducting pipe 3, with one end of the heat-conducting pipe 3 located in the initiation layer. The initiation layer is configured to melt one end of the heat-conducting pipe 3 to create a crack. The airflow channel 1 can deliver air into the first heating material layer 2 through the crack. The first heating material layer 2 can undergo an exothermic reaction with the air. The heat-conducting pipe 3 is arranged vertically in the tobacco section 5. The filter section 4, the initiation layer, and the tobacco section 5 are arranged sequentially from top to bottom. With this setup, when a consumer inhales the self-heating cigarette, the trigger layer melts one end of the heat-conducting pipe 3, causing a crack. At this time, the airflow channel 1 can deliver air into the first heating material layer 2 through the crack, causing the first heating material layer 2, which is arranged vertically, to gradually come into contact with the air. A step-by-step triggering exothermic reaction occurs between the two, thereby promoting the staged continuous exothermic reaction to achieve long-term continuous control of the exothermic heat. The heat released by the reaction enables the tobacco segment 5 to achieve full and efficient atomization in a heated but non-combustion state, satisfying the consumer's smoking needs.

[0030] Specifically, the first heating material layer 2 is composed of at least aluminum powder, iron powder, activated carbon, and solid sodium chloride. Of course, in other embodiments, the first heating material layer 2 may be made of other materials according to actual needs, and no further restrictions are imposed here.

[0031] Optionally, the initiation layer includes a second heating material layer 6 and an initiation solution. One end of the heat pipe 3 is located within the second heating material layer 6, and the initiation solution can undergo an exothermic reaction with the second heating material layer 6. Specifically, the initiation solution is water, and the second heating material layer 6 is calcium oxide. The calcium oxide can be in powder form, or it can be a cylindrical or sheet-like form pressed from powder using a mold. In other embodiments, the types of materials used to make the initiation solution and the second heating material layer 6 can be set according to actual needs, and no further limitations are imposed here.

[0032] Furthermore, the self-heating cigarette also includes a flavor capsule 7, which is located on top of the second heating material layer 6, and the initiating solution is located inside the flavor capsule 7. With this configuration, when smoking, the flavor capsule 7 can be directly broken by external force to release the initiating solution, causing the initiating solution to mix with the second heating material layer 6 and undergo an exothermic reaction to generate heat, thereby providing a heat source for the melting and rupture of the heat-conducting pipe 3.

[0033] Optionally, in order to provide better support for the multiple structural components of the self-heating cigarette, the self-heating cigarette also includes forming paper, which is fixedly sleeved on the outer periphery of the filter section 4, the flavor capsule 7, the second heating material layer 6, and the tobacco section 5.

[0034] Optionally, a vent 8 is provided on the forming paper at a position corresponding to the flavor capsule 7. The vent 8 connects the airflow channel 1 with the outside air. The self-heating cigarette also includes a sealing gasket, which is used to seal the vent 8. Furthermore, the sealing gasket is made of an airtight material. With this design, the sealing gasket made of an airtight material can prevent outside air from contaminating the internal environment of the cigarette when it is not in use, further ensuring safety during use. Moreover, when the flavor capsule is broken by hand, the airtightness of the sealing gasket can be broken, allowing the airflow channel 1 to be connected to the outside air. The overall structural design is ingenious.

[0035] Optionally, the heat pipe 3 contains a low-melting-point alloy material, which is at least disposed at the contact portion between the heat pipe 3 and the second heating material layer 6. Specifically, the melting point of the low-melting-point alloy material is 47℃-170℃. This embodiment exemplarily provides the following scheme: the low-melting-point alloy material is a bismuth-lead-tin-cadmium alloy, a cadmium-indium-tin alloy, or a cadmium-indium-thallium-barium alloy. Of course, in other embodiments, the type of low-melting-point alloy material can be set according to actual needs, and no further restrictions are imposed here. It should be noted that the heat released by the reaction between the second heating material layer 6 and the initiating solution should be higher than 47℃, and is optimally controlled between 50℃ and 250℃.

[0036] Optionally, the contact surface shape between the heat pipe 3 and the second heating material layer 6 can be set as a planar surface, a three-dimensional surface, or a conical surface.

[0037] Optionally, in order to further achieve sufficient and uniform heating of the tobacco segment 5, the centerline of the heat pipe 3 coincides with the centerline of the tobacco segment 5.

[0038] In this embodiment, an air passage is provided between the tobacco section 5 and the filter section 4. Before smoking the self-heating cigarette, the cigarette is placed vertically with the filter section 4 facing upwards. Then, the flavor capsule 7 is broken by hand, and the cigarette can be smoked after 30 seconds.

[0039] 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 self-heating cigarette, characterized in that, include: Initiation layer, wherein the initiation layer is provided with an airflow channel (1) communicating with the outside air; The first heating material layer (2) and the heat-conducting pipe (3) are encapsulated in the heat-conducting pipe (3). One end of the heat-conducting pipe (3) is located in the initiation layer. The initiation layer is configured to melt one end of the heat-conducting pipe (3) to create a crack. The airflow channel (1) delivers air into the first heating material layer (2) through the crack. The first heating material layer (2) reacts with the air in an exothermic reaction. The filter section (4) and the tobacco section (5) are arranged in a vertical direction within the tobacco section (5). The filter section (4), the initiation layer and the tobacco section (5) are arranged sequentially from top to bottom. The initiation layer includes a second heating material layer (6) and an initiation solution. One end of the heat pipe (3) is located inside the second heating material layer (6). The initiation solution reacts exothermically with the second heating material layer (6). The self-heating cigarette also includes a burst bead (7), which is disposed on the top of the second heating material layer (6), and the initiation solution is disposed inside the burst bead (7).

2. The self-heating cigarette according to claim 1, characterized in that, The self-heating cigarette also includes forming paper, which is fixedly sleeved on the outer periphery of the filter segment (4), the flavor capsule (7), the second heating material layer (6), and the tobacco segment (5).

3. The self-heating cigarette according to claim 2, characterized in that, The forming paper is provided with a vent hole (8) at the position corresponding to the burst bead (7). The vent hole (8) connects the airflow channel (1) with the outside air. The self-heating cigarette also includes a sealing gasket, which is used to seal the vent hole (8).

4. The self-heating cigarette according to claim 3, characterized in that, The sealing gasket is made of an airtight material.

5. The self-heating cigarette according to claim 1, characterized in that, The heat pipe (3) contains a low-melting-point alloy material, which is at least disposed in the contact portion between the heat pipe (3) and the second heating material layer (6).

6. The self-heating cigarette according to claim 1, characterized in that, The initiating solution is water, and the second heating material layer (6) is calcium oxide.

7. The self-heating cigarette according to any one of claims 1-6, characterized in that, The first heating material layer (2) is composed of at least aluminum powder, iron powder, activated carbon and sodium chloride solid.

8. The self-heating cigarette according to any one of claims 1-6, characterized in that, The centerline of the heat pipe (3) coincides with the centerline of the tobacco segment (5).

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