Heating cigarette smoking set

Abstract

The utility model belongs to the technical field of smoking sets, and discloses a heating cigarette smoking set, in the heating cigarette smoking set, gas blown out by an airflow generator can pass through a flow gathering cavity to generate heat exchange with a heat conduction piece, then the heated gas flows to a containing cavity and enters a cigarette, and tobacco shreds can be evenly heated through heat exchange between the high-temperature gas and the tobacco shreds. The sectional area of the flow gathering cavity is gradually reduced in the flowing direction of the gas, so that on one hand, the gas flow can be guided through the flow gathering cavity, and the resistance of the gas during flowing is reduced, and on the other hand, the flow speed of the gas in the flow gathering cavity can be gradually increased under the condition that the quantity of the gas blown out by the gas flow generator is kept unchanged due to the reduction of the sectional area; therefore, the heat exchange efficiency of the gas and the heat-conducting piece is improved.

Description

Technical Field

[0001] This utility model relates to the field of smoking accessories, and in particular to heated cigarette smoking accessories. Background Technology

[0002] Heated cigarettes are a type of new tobacco product that uses electric heating to bake the cigarette at a low temperature, causing the cigarette to produce smoke without burning.

[0003] Existing heated cigarette devices typically have a cavity for holding the cigarette and an airflow channel for gas entry. A heating element heats the cigarette within the cavity. Based on thermodynamic principles, heat conduction can be categorized into three pathways: heat transfer, heat radiation, and heat convection. Most products on the market currently use heat transfer to conduct heat through contact between the heating element and the cigarette. However, due to the low natural thermal conductivity of tobacco, which is similar to that of insulation materials, heat transfer alone is insufficient to evenly heat all the tobacco. Heat radiation, on the other hand, is difficult to conduct heat to tobacco located far from the heating element due to the layers of tobacco matrix blocking the heat transfer. Therefore, current heated cigarette products generally suffer from uneven smoke release during the heating cycle. Utility Model Content

[0004] According to one aspect of the present invention, the present invention provides a heated cigarette device, which, by setting an airflow generator and a heat-conducting component, enables a high-temperature airflow to enter the cigarette and heat the tobacco, thereby solving the problem of uneven tobacco heating in the prior art.

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

[0006] Heated cigarette devices, including:

[0007] The base has a receiving cavity for placing a cigarette, a converging cavity communicating with the receiving cavity, and a mounting cavity communicating with the converging cavity;

[0008] A heating element is disposed within the receiving cavity, the heating element being capable of generating heat and used to heat the cigarette located within the receiving cavity;

[0009] An airflow generator is disposed within the mounting cavity and is used to blow gas into the convergent cavity; the cross-sectional area of ​​the convergent cavity gradually decreases along the gas flow direction;

[0010] A heat-conducting element is disposed between the receiving cavity and the converging cavity. The heat-conducting element has a vent hole for gas to pass through. The heating element is connected to the heat-conducting element so that the heat generated by the heating element can be transferred to the heat-conducting element.

[0011] As a preferred embodiment of heated cigarette devices, the flow-gathering cavity is frustum-shaped, and the centerline of the flow-gathering cavity coincides with the centerline of the airflow generator.

[0012] As a preferred embodiment of heated cigarette devices, the flow-gathering cavity is hemispherical, and the centerline of the flow-gathering cavity coincides with the centerline of the airflow generator.

[0013] As a preferred embodiment of a heated cigarette device, the base further has a connecting cavity located between the receiving cavity and the converging cavity, the heat-conducting element is disposed in the connecting cavity, and the heat-conducting element is plate-shaped.

[0014] As a preferred embodiment of heated cigarette devices, the thermal conductivity of the material of the heat-conducting component is not less than the thermal conductivity of the material of the heating element.

[0015] As a preferred embodiment of heated cigarette devices, the thickness of the heat-conducting component is not less than 1 mm, and the distance between the heat-conducting component and the airflow generator is not less than 2 mm.

[0016] As a preferred embodiment of a heated cigarette device, the heating element is axial and is located at the center of the receiving cavity.

[0017] As a preferred embodiment of a heated cigarette device, the heating element is cylindrical, and the receiving cavity is located inside the heating element.

[0018] As a preferred embodiment of heated cigarette devices, the heating element is spaced apart from the base.

[0019] As a preferred option for heated cigarette devices, the base is made of heat-insulating material.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a heated cigarette device, including a base, a heating element, an airflow generator, and a heat-conducting component. The base has a receiving cavity for holding the cigarette, a converging cavity communicating with the receiving cavity, and a mounting cavity communicating with the converging cavity. The heating element is disposed in the receiving cavity and generates heat to heat the cigarette located in the receiving cavity. The airflow generator is disposed in the mounting cavity and blows gas into the converging cavity. The heat-conducting component is disposed between the receiving cavity and the converging cavity and has vent holes for gas passage. The heating element is connected to the heat-conducting component so that the heat generated by the heating element can be transferred to the heat-conducting component. In this heated cigarette device, the gas blown out by the airflow generator can exchange heat with the heat-conducting component after passing through the converging cavity. The heated gas then flows into the receiving cavity and enters the inside of the cigarette, where the high-temperature gas exchanges heat with the tobacco, thus uniformly heating the tobacco. Furthermore, the cross-sectional area of ​​the converging cavity gradually decreases along the gas flow direction. This design serves two purposes: firstly, it guides the airflow through the converging cavity and reduces the resistance of the gas during flow; secondly, due to the reduction in cross-sectional area, the gas velocity in the converging cavity gradually increases while the amount of gas blown out by the airflow generator remains constant, thereby increasing the heat exchange efficiency between the gas and the heat-conducting component. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a heated cigarette device according to an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a heat-conducting component in a heated cigarette device according to an embodiment of this utility model;

[0024] Figure 3 This is a cross-sectional view of another heated cigarette device in this embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a heat-conducting component in another heated cigarette device according to an embodiment of this utility model.

[0026] In the picture:

[0027] 1. Base; 11. Receiving cavity; 12. Converging cavity; 13. Mounting cavity; 14. Connecting cavity;

[0028] 2. Heating element;

[0029] 3. Airflow generator;

[0030] 4. Heat-conducting components; 41. Vent holes. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, 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, a detachable connection, or an integral part; 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; they can refer to 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 utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly 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 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 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.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] Example 1

[0036] Heated cigarettes are a type of novel tobacco product that uses electric heating to bake the cigarette at a low temperature, producing smoke without combustion. Based on thermodynamic principles, heat conduction can be divided into three pathways: heat transfer, heat radiation, and heat convection. Most products on the market currently use heat transfer, where the heating element contacts the cigarette to conduct heat. However, due to the low natural thermal conductivity of tobacco, which acts almost like an insulating material, it's difficult to evenly bake all the tobacco using only heat transfer. Heat radiation, on the other hand, is difficult to conduct heat to tobacco parts far from the heating element due to the layers of tobacco matrix blocking the heat. Therefore, currently available heated cigarette products generally suffer from uneven smoke release during the heating cycle.

[0037] In response, this embodiment provides a heated cigarette smoking device to solve the problem of uneven tobacco roasting in the prior art, and can be used in the field of smoking device technology.

[0038] Reference Figures 1-2 The heated cigarette device includes a base 1, a heating element 2, an airflow generator 3, and a heat-conducting component 4. The base 1 has a receiving cavity 11 for holding the cigarette, a converging cavity 12 communicating with the receiving cavity 11, and a mounting cavity 13 communicating with the converging cavity 12. The heating element 2 is disposed within the receiving cavity 11 and generates heat to heat the cigarette within the receiving cavity 11. The airflow generator 3 is disposed within the mounting cavity 13 and blows gas into the converging cavity 12. The heat-conducting component 4 is disposed between the receiving cavity 11 and the converging cavity 12, and has a vent 41 for gas passage. The heating element 2 is connected to the heat-conducting component 4 so that the heat generated by the heating element 2 can be transferred to the heat-conducting component 4. In this heated cigarette device, the gas blown out by the airflow generator 3 passes through the converging cavity 12 and exchanges heat with the heat-conducting component 4. The heated gas then flows into the receiving cavity 11 and enters the inside of the cigarette, where the high-temperature gas exchanges heat with the tobacco, resulting in uniform heating of the tobacco. Furthermore, the cross-sectional area of ​​the converging cavity 12 gradually decreases along the gas flow direction. This configuration serves two purposes: firstly, it guides the airflow through the converging cavity 12 and reduces the resistance of the gas during flow; secondly, due to the reduction in cross-sectional area, the gas velocity in the converging cavity 12 gradually increases while the amount of gas blown out by the airflow generator 3 remains constant, thereby increasing the heat exchange efficiency between the gas and the heat-conducting component 4.

[0039] Optionally, the airflow generator 3 can be a fan or a micro motor. The distance between the airflow generator 3 and the end of the cigarette stick is 3mm-20mm, and the airflow velocity generated by the airflow generator is 0.1m / s-3.3m / s.

[0040] Continue to refer to Figures 1-2In this embodiment, the flow-gathering cavity 12 is frustum-shaped, and the centerline of the flow-gathering cavity 12 coincides with the centerline of the airflow generator 3. The flow-gathering cavity 12 has a first end near the receiving cavity 11 and a second end near the mounting cavity 13. The cross-sectional area of ​​the first end is smaller than that of the second end, thereby guiding the gas entering through the second end through the cavity wall of the flow-gathering cavity 12. At the same time, since the flow-gathering cavity 12 is frustum-shaped as a whole, the cavity wall of the flow-gathering cavity 12 has a smooth transition, which can reduce the resistance encountered by the gas flow.

[0041] As an alternative, the flow-gathering cavity 12 is hemispherical, and the center line of the flow-gathering cavity 12 coincides with the center line of the airflow generator 3. In this scheme, the cavity wall of the flow-gathering cavity 12 can also guide the gas entering through the second end. At the same time, since the flow-gathering cavity 12 is hemispherical, the cavity wall of the flow-gathering cavity 12 has a smooth transition, which can reduce the resistance encountered by the gas flow.

[0042] Continue to refer to Figures 1-2 The base 1 also has a connecting cavity 14 located between the receiving cavity 11 and the converging cavity 12. The heat-conducting element 4 is disposed in the connecting cavity 14 and is plate-shaped. The heat-conducting element 4 is installed on the cavity wall of the connecting cavity 14.

[0043] Continue to refer to Figures 1-2 The thermal conductivity of the material of the heat-conducting component 4 is not less than that of the material of the heating element 2. By increasing the thermal conductivity of the heat-conducting component 4, the heat generated by the heating element 2 can be conducted to the heat-conducting component 4 as much as possible. In this embodiment, the heat-conducting component 4 can be made of materials such as copper, aluminum alloy, stainless steel, or graphene.

[0044] Continue to refer to Figures 1-2 The thickness of the heat-conducting component 4 is not less than 1 mm to maximize the length of the gas flow path within the vent holes 41 of the heat-conducting component 4, so that the gas can fully exchange heat with the heat-conducting component 4. In this embodiment, the thickness of the heat-conducting component 4 can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, or 5 mm. The distance between the heat-conducting component 4 and the airflow generator 3 is not less than 2 mm to increase the length of the flow-gathering cavity 12, making the angle between the cavity wall of the flow-gathering cavity 12 and its centerline smaller, thus reducing the resistance to gas flow. In this embodiment, the distance between the heat-conducting component 4 and the airflow generator 3 can be 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, or 6 mm.

[0045] Optionally, the heat-conducting component 4 is fixedly connected to the airflow generator 3, thereby facilitating the simultaneous connection of both to the base 1. Furthermore, this arrangement also ensures that their relative positions remain fixed. Specifically, the heat-conducting component 4 and the airflow generator 3 can be fixedly connected by screws, clips, or other structures.

[0046] Continue to refer to Figures 1-2 The heating element 2 is axial and is located at the center of the receiving cavity 11, so that the heat generated by the heating element 2 located at the center of the receiving cavity 11 can diffuse in all directions, thereby reducing heat loss. In addition, in this embodiment, in order to adapt to the shape and position of the heating element 2, the vent 41 of the heat conductor 4 is located near the outer periphery of the heat conductor 4, and the center of the heat conductor 4 is used to connect with the heating element 2.

[0047] Example 2

[0048] Reference Figures 3-4 This embodiment provides another heated cigarette device. The main difference between this heated cigarette device and the heated cigarette device in Embodiment 1 is that the heating element 2 has a different specific structure and position.

[0049] In this embodiment, the heating element 2 is cylindrical, and the receiving cavity 11 is located inside the heating element 2, so that the cigarette is placed inside the heating element 2. The heat generated by the heating element 2 diffuses inward. In this design, the contact area between the heating element 2 and the cigarette is large, which is beneficial to improving the uniformity of heating of the cigarette. In addition, in this embodiment, in order to adapt to the shape and position of the heating element 2, the vent 41 of the heat-conducting element 4 is located near the center of the heat-conducting element 4, and the part of the heat-conducting element 4 near the outer periphery is connected to the heating element 2.

[0050] Specifically, the heating element 2 includes a housing and a heating core disposed inside the housing. The heat emitted by the heating core can be conducted to the housing and then to the cigarette.

[0051] The aforementioned structure also has a problem: since the heating element 2 is located on the outer periphery of the cigarette, some heat will diffuse outwards towards the heating element 2, resulting in energy waste. To address this issue, this embodiment employs the following two solutions.

[0052] One approach is to space the heating element 2 from the base 1, thereby avoiding direct contact between the heating element 2 and the base 1 and reducing heat dissipation.

[0053] Another option is to make the base 1 with heat-insulating material, thereby reducing the heat conducted from the heating element 2 to the base 1.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. 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 this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heated cigarette smoking device, characterized in that, include: The base (1) has a receiving cavity (11) for placing a cigarette, a flow-gathering cavity (12) communicating with the receiving cavity (11), and a mounting cavity (13) communicating with the flow-gathering cavity (12); A heating element (2) is disposed in the receiving cavity (11). The heating element (2) is capable of generating heat and is used to heat the cigarette located in the receiving cavity (11). An airflow generator (3) is disposed in the mounting cavity (13) and is used to blow gas into the flow-gathering cavity (12); the cross-sectional area of ​​the flow-gathering cavity (12) gradually decreases along the gas flow direction; A heat-conducting element (4) is disposed between the receiving cavity (11) and the converging cavity (12). The heat-conducting element (4) has a vent hole (41) for gas to pass through. The heating element (2) is connected to the heat-conducting element (4) so ​​that the heat generated by the heating element (2) can be transferred to the heat-conducting element (4).

2. The heated cigarette smoking device according to claim 1, characterized in that, The flow-gathering cavity (12) is frustum-shaped, and the centerline of the flow-gathering cavity (12) coincides with the centerline of the airflow generator (3).

3. The heated cigarette smoking device according to claim 1, characterized in that, The flow-gathering cavity (12) is hemispherical, and the center line of the flow-gathering cavity (12) coincides with the center line of the airflow generator (3).

4. The heated cigarette smoking device according to claim 1, characterized in that, The base (1) also has a connecting cavity (14) located between the receiving cavity (11) and the converging cavity (12), and the heat-conducting element (4) is disposed in the connecting cavity (14) and the heat-conducting element (4) is plate-shaped.

5. The heated cigarette smoking device according to claim 4, characterized in that, The thermal conductivity of the material of the heat-conducting component (4) is not less than that of the material of the heating element (2).

6. The heated cigarette smoking device according to claim 4, characterized in that, The thickness of the heat-conducting component (4) is not less than 1 mm, and the distance between the heat-conducting component (4) and the airflow generator (3) is not less than 2 mm.

7. The heated cigarette smoking device according to any one of claims 1-6, characterized in that, The heating element (2) is axial and is located at the center of the receiving cavity (11).

8. The heated cigarette smoking device according to any one of claims 1-6, characterized in that, The heating element (2) is cylindrical, and the receiving cavity (11) is located inside the heating element (2).

9. The heated cigarette smoking device according to claim 8, characterized in that, The heating element (2) is spaced apart from the base (1).

10. The heated cigarette smoking device according to any one of claims 1-6, characterized in that, The base (1) is made of heat-insulating material.

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