Integrated self-heating cigarette with built-in power supply unit

Abstract

The invention discloses an integrated self-heating cigarette with a built-in power supply unit. The integrated self-heating cigarette comprises the power supply unit, a tobacco matrix unit, a cooling unit and a filter tip unit which are connected in sequence. The integrated self-heating cigarette further comprises a heating assembly, and the heating assembly adopts three optional integration modes: 1) a penetrating type structure which is directly embedded into the tobacco matrix unit to form a distributed heat conduction network; the bridging structure is arranged between the power supply unit and the tobacco matrix unit and is connected with the power supply unit and the tobacco matrix unit through an interface heat conduction layer; and 3) combining the penetrating structure and the bridging structure. A columnar or sheet-shaped battery is arranged in the power supply unit, an airflow sensing switch is integrated, and energization is triggered through inspiration of a user. The tobacco matrix unit achieves axial and radial synchronous uniform heating through the distributed heat conduction path design of the heating assembly. Through power supply-heating integration, dependence of an external smoking set is completely abandoned, and in combination with a multi-mode topological structure of the heating assembly, heating uniformity and heat efficiency are optimized, and aerosol consistency and user experience are improved.

Description

Technical Field

[0001] This invention belongs to the field of tobacco processing technology and relates to an integrated self-heating cigarette with a built-in power supply unit. Background Technology

[0002] Heated cigarettes heat tobacco without burning it to prevent the release of aerosols, and their core principle is to avoid the harmful substances produced by high-temperature decomposition. However, current technologies heavily rely on specialized heated tobacco devices, which have the following inherent drawbacks:

[0003] (1) High operating costs: The smoking device needs to integrate a rechargeable lithium battery, a microprocessor temperature control module (usually accurate to ±5℃) and a heating element (such as a ceramic / metal heating element), resulting in a high cost per unit, and users need to bear the additional purchase cost;

[0004] (2) Poor portability and complicated operation: The size of a typical smoking device is 90mm in length and weighs more than 80g. It also requires frequent charging (approximately 10-20 cigarettes per use) and cleaning, which limits its use scenarios.

[0005] (3) Compatibility limitations: Some smoking devices are only compatible with specific brands of cigarettes. Even if they can be used with difficulty, the compatibility of the smoking device and cigarettes is poor, which seriously affects the consumer's smoking experience.

[0006] (4) Most existing heated cigarettes use a single heat conduction mode, which makes it difficult to achieve synchronous and uniform heating of the tobacco matrix in both the axial and radial directions. Insufficient heating uniformity affects the sensory quality of the product.

[0007] Therefore, there is an urgent need to develop a highly integrated, uniformly heated, and thermally efficient self-heating cigarette technology, which is the core technical problem that this patent aims to solve. Summary of the Invention

[0008] To address the technical problems existing in the prior art, the present invention provides an integrated self-heating cigarette with a built-in power supply unit. This self-heating cigarette completely eliminates the reliance on external smoking devices by integrating power supply and heating. Combined with the multi-mode topology of the heating component, it optimizes heating uniformity and thermal efficiency, and improves aerosol consistency and user experience.

[0009] To achieve the above-mentioned technical effects, the present invention adopts the following technical solution:

[0010] This invention provides an integrated self-heating cigarette with a built-in power supply unit, wherein the heated cigarette includes a power supply unit, a tobacco matrix unit, a cooling unit and a filter unit connected in sequence;

[0011] The heated cigarette also includes a heating component unit, which is embedded inside the tobacco matrix unit to form a distributed heat conduction network; and / or, the heating component unit is bridged between the power supply unit and the tobacco matrix unit.

[0012] The power supply unit is equipped with an airflow sensing switch.

[0013] As a preferred technical solution of the present invention, the heating component is made of a material that can be made into a thermally conductive sheet, including any one or a combination of at least two of metal foil, graphene composite material, and boron nitride-based composite material.

[0014] As a preferred technical solution of the present invention, the heating component is made of dual-emitting graphene glass fiber and / or graphene-skinned alumina fiber fabric.

[0015] As a preferred technical solution of the present invention, when the heating component unit is embedded inside the tobacco matrix unit, the heating component unit is distributed radially, in a grid or spiral shape within the tobacco matrix unit to form a three-dimensional heat conduction network, and the axial length is 80 to 100% of the length of the tobacco matrix unit.

[0016] As a preferred technical solution of the present invention, when the heating component is bridged between the power supply unit and the tobacco matrix unit, the heating component unit includes at least two layers of heat-conducting sheets with the same diameter. The diameter of the heat-conducting sheets is 80-100% of the diameter of the power supply unit and the tobacco matrix unit, and the total thickness of the heat-conducting sheets is 1-10% of the total length of the heated cigarette.

[0017] As a preferred technical solution of the present invention, when the heating component is bridged between the power supply unit and the tobacco matrix unit, the power supply unit and the heating component are connected by an interface material with high thermal conductivity to ensure efficient heat transfer; the interface between the power supply unit and the heating component unit is provided with a mechanical positioning structure to ensure assembly accuracy and contact reliability.

[0018] As a preferred technical solution of the present invention, when the heating component is bridged between the power supply unit and the tobacco matrix unit, the heating component unit includes at least two heat-conducting sheets with different diameters, the heat-conducting sheets are arranged in a manner that gradually increases or decreases, the diameter of the heat-conducting sheet is 80 to 100% of the diameter of the power supply unit, and the total thickness of the heat-conducting sheet is 1 to 10% of the total length of the heated cigarette.

[0019] As a preferred embodiment of the present invention, the length of the tobacco matrix unit is 20-40% of the total length of the heated cigarette.

[0020] As a preferred technical solution of the present invention, the working method of the self-heating cigarette includes the following steps: the user inhales to trigger the airflow sensing switch; the power supply unit supplies heat to the heating component unit; the heating component conducts heat to the tobacco matrix unit simultaneously along the axial and radial directions; the tobacco matrix releases aerosol when heated.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] This invention provides an integrated heated cigarette. This self-heating cigarette completely eliminates the reliance on external smoking devices by integrating power supply and heating. Combined with the multi-mode topology of the heating component, it optimizes heating uniformity and thermal efficiency, and improves aerosol consistency and user experience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an integrated self-heating cigarette with a built-in battery provided in Embodiment 1 of the present invention.

[0024] Figure 2 This is a schematic diagram of the integrated self-heating cigarette with a built-in battery provided in Embodiment 4 of the present invention.

[0025] Figure 3 This is a schematic diagram of the integrated self-heating cigarette with a built-in battery provided in Embodiment 6 of the present invention.

[0026] In the diagram: 1-Power supply unit, 2-Heating component, 3-Tobacco matrix unit, 4-Cooling unit, 5-Filter unit.

[0027] The present invention will now be described in further detail. However, the examples described below are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims. Detailed Implementation

[0028] The technical solution of this application will be further described below through specific implementation methods.

[0029] This invention provides an integrated self-heating cigarette with a built-in power supply unit, the heated cigarette comprising a power supply unit, a tobacco matrix unit, a cooling unit and a filter unit connected in sequence;

[0030] Heated cigarettes also include a heating component unit, which is embedded inside the tobacco matrix unit to form a distributed heat conduction network; and / or, the heating component unit is bridged between the power supply unit and the tobacco matrix unit;

[0031] The power supply unit is equipped with an airflow sensing switch.

[0032] In this invention, the heating component unit is heated by the power supply unit, and the heating component unit heats the tobacco matrix unit, thereby realizing the "removal of smoking device" function. Moreover, combined with the multi-mode topology of the heating component, the heating component can fully contact the tobacco matrix unit, improve the heating uniformity of the tobacco matrix unit, improve the overall quality of the heated cigarette, and thus enhance the user's sensory experience.

[0033] In one specific embodiment of the present invention, the power supply unit is a cylindrical or sheet-shaped battery.

[0034] In one specific embodiment of the present invention, the cylindrical or sheet-shaped battery may be a zinc-carbon battery, an alkaline battery, a lithium battery, a silver oxide battery, or a nickel-zinc battery, etc.

[0035] In one specific embodiment of the present invention, the thickness of the power supply unit is 1 to 10% of the total length of the heated cigarette, such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, or 10%, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0036] In one specific embodiment of the present invention, the specific type and shape of the battery used in the power supply unit can be adjusted according to the cigarette specifications and the cost of the cigarette, and no further limitation is made here.

[0037] In one specific embodiment of the present invention, the heating component is made of a material that can be formed into a thermally conductive sheet, including any one or a combination of at least two of metal foil, graphene composite material, and boron nitride-based composite material. Preferably, the graphene composite material is graphene glass fiber (GGF) and / or graphene alumina fiber / fabric (GAFF).

[0038] GGF can simultaneously emit mid-infrared and far-infrared wavelengths, reducing ineffective radiation. It has a high electrothermal conversion rate, and the continuous graphene network ensures uniform heat distribution. It also possesses excellent mechanical strength and chemical stability, making it suitable as a heating element for cigarettes. GAFF has high infrared emissivity, high heating efficiency, low density, meeting lightweight requirements, and good thermal shock resistance, making it suitable for various weather conditions. It also has high chemical stability, allowing for long-term storage, and is also suitable as a heating element for cigarettes.

[0039] In one specific embodiment of the present invention, when the heating component unit is embedded inside the tobacco matrix unit, the heating component unit is distributed radially, in a grid-like or spiral pattern within the tobacco matrix unit, forming a three-dimensional heat conduction network. The axial length is 80% to 100% of the length of the tobacco matrix unit, such as 80%, 82%, 85%, 88%, 90%, 92%, 95%, 98%, or 100%, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0040] In one specific embodiment of the present invention, when the heating component is bridged between the power supply unit and the tobacco matrix unit, the heating component unit includes at least two layers of heat-conducting sheets with the same diameter. The diameter of the heat-conducting sheets is 80-100% of the diameter of the power supply unit and the tobacco matrix unit, and the total thickness of the heat-conducting sheets is 1-10% of the total length of the heated cigarette.

[0041] The diameter of the heat-conducting plate is 80-100% of the diameter of the power supply unit and the tobacco matrix unit, such as 80%, 85%, 90%, 95%, 100%, etc.; the total length of the heat-conducting plate is 1-10% of the total length of the heated cigarette, such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, or 10%, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0042] In one specific embodiment of the present invention, when the heating component is bridged between the power supply unit and the tobacco matrix unit, the power supply unit and the heating component are connected by an interface material with high thermal conductivity to ensure efficient heat transfer; the interface between the power supply unit and the heating component unit is provided with a mechanical positioning structure to ensure assembly accuracy and contact reliability.

[0043] In one specific embodiment of the present invention, the power supply unit and the heating component can be connected by a mechanical positioning structure such as a snap-fit ​​or a thread. The specific connection can be adjusted according to the needs of heated cigarette production, and no further limitation is made here.

[0044] In one specific embodiment of the present invention, when the heating component is bridged between the power supply unit and the tobacco matrix unit, the heating component unit includes at least two heat-conducting sheets with different diameters, the heat-conducting sheets are arranged in a manner that gradually increases or decreases, the diameter of the heat-conducting sheets is 80 to 100% of the diameter of the power supply unit, and the total thickness of the heat-conducting sheets is 1 to 10% of the total length of the heated cigarette.

[0045] The diameter of the heat-conducting plate is 80-100% of the diameter of the power supply unit and the tobacco matrix unit, such as 80%, 85%, 90%, 95%, 100%, etc.; the total length of the heat-conducting plate is 1-10% of the total length of the heated cigarette, such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, or 10%, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0046] In one specific embodiment of the present invention, the length of the tobacco matrix unit is 20% to 40% of the total length of the heated cigarette, such as 20%, 22%, 25%, 28%, 30%, 32%, 35%, 38%, or 40%, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0047] In one specific embodiment of the present invention, the tobacco matrix unit is filled with a material such as tobacco. Any tobacco material used in the art can be filled into the tobacco matrix unit, and the specific material can be selected according to production needs, without being specifically limited here.

[0048] In one specific embodiment of the present invention, the length of the cooling unit is 30% to 50% of the total length of the heated cigarette, such as 30%, 35%, 40%, 45% or 50%, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0049] In one specific embodiment of the present invention, the cooling unit is a conventional structure for heating cigarettes, and its material can be selected according to production needs, without being specifically limited here.

[0050] In one specific embodiment of the present invention, the length of the filter unit is 10% to 30% of the total length of the heated cigarette, such as 10%, 15%, 20%, 25% or 30%, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0051] In one specific embodiment of the present invention, the filter unit is a conventional structure for heated cigarettes, and its material can be selected according to production needs, without being specifically limited here.

[0052] In one specific embodiment of the present invention, the power supply unit, tobacco matrix unit, cooling unit, and filter unit can be sequentially arranged in the housing. The filter unit can be integrated inside the housing or externally connected to the housing. The overall appearance of the heated cigarette is no different from that of a conventional heated cigarette.

[0053] In one specific embodiment of the present invention, the working method of the self-heating cigarette includes the following steps: the user inhales to trigger an airflow sensing switch; the power supply unit supplies heat to the heating component unit; the heating component conducts heat to the tobacco matrix unit simultaneously along the axial and radial directions; the tobacco matrix releases aerosol upon heating.

[0054] To better illustrate the present invention and facilitate understanding of its technical solutions, typical but non-limiting embodiments of the present invention are as follows:

[0055] Example 1

[0056] This embodiment provides an integrated self-heating cigarette with a built-in power supply unit, the structure of which is as follows: Figure 1 As shown, the heated cigarette includes a power supply unit 1, a heating component unit 2, a tobacco matrix unit 3, a cooling unit 4, and a filter unit 5 connected in sequence.

[0057] The tobacco matrix unit 3 is equipped with two thin-film heating components 2, which are the same length as the tobacco matrix unit 3 and 3mm wide. They are made of GGF material and are placed symmetrically. The heating components 2 are electrically connected to the power supply unit 1.

[0058] The heated cigarette has a total length of 84mm and a diameter of 7.7mm. The power supply unit 1 is 5% of the total length of the heated cigarette, the tobacco matrix unit 3 is 35% of the total length of the heated cigarette, the cooling unit 4 is 35% of the total length of the heated cigarette, and the filter unit 5 is 25% of the total length of the heated cigarette.

[0059] Example 2

[0060] In this embodiment, except that the heating component 2 consists of four thin films, each 3mm wide, coaxially arranged with the tobacco matrix unit 3, and of the same length as the tobacco matrix unit 3, and made of GGF material, and the four thin film heating components are symmetrically placed on top, bottom, left, and right, everything else is the same as in embodiment 1.

[0061] Example 3

[0062] Except for the fact that the length of the power supply unit 1 is 3% of the total length of the heated cigarette, the length of the tobacco matrix unit 3 is 40% of the total length of the heated cigarette, the length of the cooling unit 4 is 29% of the total length of the heated cigarette, and the length of the filter unit 5 is 30% of the total length of the heated cigarette, all other contents of this embodiment are the same as those of Embodiment 1.

[0063] Example 4

[0064] This embodiment provides an integrated heated cigarette, the structure of which is as follows: Figure 2 As shown, the heated cigarette includes a power supply unit 1, a tobacco matrix unit 3, a cooling unit 4, and a filter unit 5 connected in sequence.

[0065] A heating component 2, made of GAFF material, is installed as a bridge between the power supply unit 1 and the tobacco matrix unit 3; the heating component 2 is connected to the power supply unit 1.

[0066] The heated cigarette has a total length of 84mm and a diameter of 7.7mm. The power supply unit 1 is 3% of the total length of the heated cigarette, the heating component 2 is 2% of the total length of the heated cigarette, the tobacco matrix unit 3 is 35% of the total length of the heated cigarette, the cooling unit 4 is 35% of the total length of the heated cigarette, and the filter unit 5 is 25% of the total length of the heated cigarette.

[0067] Example 5

[0068] Except for the fact that the length of the power supply unit 1 is 3% of the total length of the heated cigarette, the thickness of the heating component 2 is 5% of the total length of the heated cigarette, the tobacco matrix unit 3 is 32% of the total length of the heated cigarette, the length of the cooling unit 4 is 40% of the total length of the heated cigarette, and the length of the filter unit 5 is 21% of the total length of the heated cigarette, all other contents are the same as those in Embodiment 4.

[0069] Example 6

[0070] This embodiment provides an integrated heated cigarette, the structure of which is as follows: Figure 3 As shown, the heated cigarette includes a power supply unit 1, a tobacco matrix unit 3, a cooling unit 4, and a filter unit 5 connected in sequence.

[0071] The tobacco matrix unit 3 is equipped with two thin-film heating components 2, and the power supply unit 1 is also bridged with the heating components 2.

[0072] The number, diameter, length, and material of the heating components 2 embedded inside the tobacco matrix unit are the same as in Example 1; the material and thickness of the heating components 2 bridging the power supply unit 1 and the tobacco matrix unit 3 are the same as in Example 4.

[0073] The heated cigarette has a total length of 84mm and a diameter of 7.7mm. The power supply unit 1 is 3% of the total length of the heated cigarette, the heating component 2 is 2% of the total length of the heated cigarette, the tobacco matrix unit 3 is 35% of the total length of the heated cigarette, the cooling unit 4 is 35% of the total length of the heated cigarette, and the filter unit 5 is 25% of the total length of the heated cigarette.

[0074] Comparative Example 1

[0075] Except for the heating component being made of copper, all other conditions in this comparative example are the same as in Example 1.

[0076] Comparative Example 2

[0077] Except for the heating component being made of carbon fiber, all other conditions in this comparative example are the same as in Example 1.

[0078] In Examples 1-6 and Comparative Examples 1-2, the tobacco matrix unit was filled with thick slurry tobacco sheets, the cooling unit was made of 85% cellulose diacetate tow with 15% triacetate, the filter tip was made of 80% cellulose diacetate tow with 20% triacetate, and the power supply unit was a 3.2-4.2V lithium battery.

[0079] Seven experts with over five years of experience in sensory evaluation of tobacco products were invited to score the integrated heated cigarettes provided in Examples 1-6 and Comparative Examples 1 and 2 using a 0-9 equidistant scale. The scores evaluated included smoke temperature, smoke volume, smoke uniformity, aroma, irritation, and off-flavors. The evaluation results are shown in Table 1, where the overall evaluation is a comprehensive score given by the experts to each integrated heated cigarette sample.

[0080] Table 1

[0081] flue gas temperature flue gas volume Suction uniformity fragrance Stimulate Overall evaluation Example 1 8.0 8.0 8.0 8.0 8.0 8.0 Example 2 8.0 8.2 8.3 8.2 8.3 8.2 Example 3 8.2 7.8 7.8 7.7 7.8 7.9 Example 4 8.0 8.1 8.1 8.0 8.2 8.1 Example 5 7.9 8.2 8.3 8.2 8.4 8.2 Example 6 7.8 8.3 8.4 8.2 8.4 8.2 Comparative Example 1 8.0 7.5 7.5 7.4 7.3 7.5 Comparative Example 2 8.0 7.6 7.6 7.6 7.2 7.6

[0082] The applicant declares that the detailed structural features of the present invention are illustrated through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must rely on the above detailed structural features to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions for the components selected in the present invention, additions of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0083] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0084] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0085] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. An integrated self-heating cigarette with a built-in power supply unit, characterized in that, The heated cigarette includes a power supply unit, a tobacco matrix unit, a cooling unit, and a filter unit connected in sequence; The heated cigarette also includes a heating component unit, which is embedded inside the tobacco matrix unit to form a distributed heat conduction network; and / or, the heating component unit is bridged between the power supply unit and the tobacco matrix unit. The power supply unit is equipped with an airflow sensing switch.

2. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, The power supply unit is a cylindrical or sheet-shaped battery.

3. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, The heating component is made of a material that can be made into a thermally conductive sheet, including any one or a combination of at least two of metal foil, graphene composite material, and boron nitride-based composite material.

4. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, When the heating component unit is embedded inside the tobacco matrix unit, the heating component unit is distributed radially, in a grid or spiral pattern within the tobacco matrix unit, forming a three-dimensional heat conduction network with an axial length of 80 to 100% of the length of the tobacco matrix unit.

5. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, When the heating component is bridged between the power supply unit and the tobacco matrix unit, the heating component unit includes at least two heat-conducting plates. The diameter of the heat-conducting plates increases gradually from the power supply unit to the tobacco matrix unit. The diameter of the heat-conducting plates is 80-100% of the diameter of the power supply unit and the tobacco matrix unit. The total thickness of the heat-conducting plates is 1-10% of the total length of the heated cigarette.

6. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, When the heating component is bridged between the power supply unit and the tobacco matrix unit, the power supply unit and the heating component are connected by an interface material with high thermal conductivity to ensure efficient heat transfer; the interface between the power supply unit and the heating component unit is provided with a mechanical positioning structure to ensure assembly accuracy and contact reliability.

7. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, When the heating component is bridged between the power supply unit and the tobacco matrix unit, the heating component unit includes at least two heat-conducting sheets with different diameters, which are arranged in a manner that gradually increases or decreases in size. The diameter of the heat-conducting sheet is 80 to 100% of the diameter of the power supply unit, and the total thickness of the heat-conducting sheet is 1 to 10% of the total length of the heated cigarette.

8. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, The length of the tobacco matrix unit is 20-40% of the total length of the heated cigarette.

9. The integrated self-heating cigarette with a built-in power supply unit according to claim 1, characterized in that, The self-heating cigarette's operating method includes the following steps: the user inhales to trigger an airflow sensing switch; the power supply unit supplies heat to the heating component unit; the heating component simultaneously conducts heat along the axial and radial directions to the tobacco matrix unit; the tobacco matrix releases aerosol upon heating.

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