Heating structure and heated tobacco device

Abstract

The present application discloses a heating structure and a heated tobacco device. The heating structure comprises a housing, wherein the housing is enclosed to form a cavity; an inner wall of the housing comprises a first inner wall and a second inner wall; an airflow is heated in a cavity corresponding to the first inner wall and flows to a cavity corresponding to the second inner wall; and an area of the first inner wall is greater than or equal to an area of the second inner wall. The first inner wall of the heating structure generates heat to heat air passing through the cavity, and the airflow increases in temperature after passing through the cavity corresponding to the first inner wall, and enters the cavity corresponding to the second inner wall to heat an aerosol-generating substrate, thereby generating an aerosol. A first inner wall having an area greater than or equal to that of a second inner wall allows for an airflow to be sufficiently heated in a cavity corresponding to the first inner wall by means of a large heat conduction area, and for the heated airflow to flow through a cavity corresponding to the second inner wall with less resistance, allowing users to inhale more smoothly.

Description

Heating structure and heated cigarette accessories

[0001] This application claims priority to Chinese Patent Application No. CN202411531563.3, filed on October 30, 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0002] This application relates to the field of heated cigarette products technology, and in particular to a heating structure and a heated cigarette appliance. Background Technology

[0003] In the field of heated tobacco products, air heating is a novel heating method. Specifically, it involves heating the air within a heating element at the bottom of the smoke generator, then using convection to conduct the hot air upwards to heat the cigarette. Compared to conventional heat conduction heating methods, this offers better heating uniformity and penetration. To ensure sufficient heating of the air, most air-heated smoking devices currently employ different structural designs for the bottom heat source, creating multiple airflow channels to ensure adequate heating of the cigarette. However, existing heating structures suffer from low heat transfer efficiency or increased airflow resistance, negatively impacting the user's smoking experience. Summary of the Invention

[0004] This invention provides a heating structure and a heated cigarette device to solve the technical problems of low heat transfer efficiency or increased airway suction resistance in existing heating structures.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0006] In a first aspect, the present invention provides a heating structure including a housing, the housing being configured to form a cavity, the inner wall of the housing including a first inner wall and a second inner wall, an airflow being heated in the cavity corresponding to the first inner wall and flowing into the cavity corresponding to the second inner wall, the area of ​​the first inner wall being greater than or equal to the area of ​​the second inner wall.

[0007] Furthermore, the roughness of the first inner wall is greater than or equal to the roughness of the second inner wall.

[0008] Furthermore, a first rib is formed on the first inner wall, the first rib extending along the length direction of the inner wall or extending along the arc direction of the inner wall.

[0009] Furthermore, there are multiple first ribs, and the multiple first ribs are evenly spaced apart.

[0010] Furthermore, the cross-section of the first rib is circular, square, or triangular.

[0011] Furthermore, a spiral second rib is formed on the first inner wall, and the second rib extends along the length direction of the first inner wall.

[0012] Furthermore, the cross-sectional area of ​​the shell increases along the direction of airflow.

[0013] Furthermore, the roughness at both ends of the inner wall is greater than the roughness of the rest of the inner wall.

[0014] Furthermore, the heating structure also includes a heat insulation layer, which covers the outer periphery of the housing.

[0015] A second aspect of the present invention provides a heated cigarette device, comprising the heating structure described above.

[0016] The heating structure provided by this invention allows the first inner wall to generate heat, heating the air passing through the cavity. The airflow, after passing through the cavity corresponding to the first inner wall, experiences a temperature increase and enters the cavity corresponding to the second inner wall, heating the aerosol-generating matrix to generate aerosols. Because the area of ​​the first inner wall is greater than or equal to the area of ​​the second inner wall, the airflow can be sufficiently heated within the cavity corresponding to the first inner wall due to the larger heat conduction area. The heated airflow then flows with less resistance within the cavity corresponding to the second inner wall, resulting in smoother suction for the user. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a schematic diagram of the first structure of the heating structure in an embodiment of the present invention;

[0019] Figure 2 is a cross-sectional view of Figure 1;

[0020] Figure 3 is a bottom view of Figure 1;

[0021] Figure 4 is a second structural cross-sectional view of the heating structure in an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the second rib structure of the third structure of the heating structure in an embodiment of the present invention;

[0023] Figure 6 is a fourth structural cross-sectional view of the heating structure in an embodiment of the present invention.

[0024] Reference numerals: 10, shell; 11, first inner wall; 111, first rib; 112, second rib; 12, second inner wall; 13, insulation layer. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0029] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0030] A first aspect of this application provides a heating structure, including a housing 10, which is configured to form a cavity. The inner wall of the housing 10 includes a first inner wall 11 and a second inner wall 12. An airflow is heated in the cavity corresponding to the first inner wall 11 and flows into the cavity corresponding to the second inner wall 12. The area of ​​the first inner wall 11 is greater than or equal to the area of ​​the second inner wall 12.

[0031] In this embodiment, the housing 10 portion corresponding to the first inner wall 11 is the heating portion of the heating structure. After being powered on, it generates heat, thereby heating the airflow within the cavity. If the housing 10 portion corresponding to the first inner wall 11 only includes a highly thermally conductive material, a conductive element can be attached to the first inner wall 11. Heat is transferred to the first inner wall 11 through the conductive element after power is applied, causing the first inner wall 11 to heat up. If the housing 10 portion corresponding to the first inner wall 11 includes a highly conductive but moderately thermally conductive material, or includes both highly thermally conductive and highly conductive materials, the first inner wall 11 can achieve self-heating after being powered on. The material of the housing 10 portion corresponding to the second inner wall 12 can be the same as or different from the material of the housing 10 portion corresponding to the first inner wall 11, depending on the actual situation.

[0032] In this embodiment, the area of ​​the first inner wall 11 is greater than or equal to the area of ​​the second inner wall 12. This is to ensure that the airflow is sufficiently heated within the cavity corresponding to the first inner wall 11 due to the larger heat conduction area. The heated airflow then flows with less resistance within the cavity corresponding to the second inner wall 12, making suction smoother for the user. The heated airflow enters the cavity corresponding to the second inner wall 12 to heat the aerosol-generating matrix, thereby generating an aerosol.

[0033] In some embodiments, the roughness of the first inner wall 11 is greater than or equal to the roughness of the second inner wall 12. In this embodiment, by setting the roughness of the first inner wall 11 and the second inner wall 12, the airflow in the cavity corresponding to the first inner wall 11 flows for a longer time, which facilitates heat transfer; at the same time, the heated airflow flows rapidly with less resistance in the cavity corresponding to the second inner wall 12.

[0034] In other embodiments, a first rib 111 is formed on the first inner wall 11, extending along the length of the inner wall or along the arc of the inner wall. Referring to Figures 1 to 4, the first rib 111 protrudes from the first inner wall 11 into the cavity, further increasing the area of ​​the first inner wall 11, thereby increasing the heated area when airflow passes through the cavity. Furthermore, there are multiple first ribs 111, evenly spaced apart. The evenly spaced multiple first ribs 111 ensure more uniform heating of the airflow passing through the cavity. Specifically, the cross-section of the first rib 111 is circular, square, or triangular.

[0035] In some embodiments, a spiral second rib 112 is formed on the first inner wall 11, and the second rib 112 extends along the length direction of the first inner wall 11. Referring to FIG5, the second rib 112 is spiral and protrudes from the first inner wall 11 into the cavity. The second rib 112 is arranged along the length direction of the first inner wall 11, which can further increase the area of ​​the first inner wall 11, thereby increasing the heating area when the airflow passes through the cavity.

[0036] In some embodiments, the cross-sectional area of ​​the housing 10 increases along the direction of airflow. Referring to Figure 6, the airflow flows from the cavity corresponding to the first inner wall 11 to the cavity corresponding to the second inner wall 12. The increasing cross-sectional area of ​​the housing 10 along the direction of airflow means that the cavity gradually decreases from the first inner wall 11 to the second inner wall 12, thus allowing the airflow to flow for a longer time within the cavity corresponding to the first inner wall 11, facilitating heat transfer; simultaneously, it allows the heated airflow to flow rapidly with less resistance within the cavity corresponding to the second inner wall 12.

[0037] In some embodiments, the roughness at both ends of the inner wall is greater than the roughness of the rest of the inner wall. In the embodiments described above, the roughness at both ends of the inner wall is set to be the greatest, which allows airflow to enter and leave the cavity more smoothly, further reducing flow resistance.

[0038] In some embodiments, the heating structure further includes a heat insulation layer 13, which covers the outer periphery of the housing 10. In this embodiment, the heat insulation layer 13 is provided on the outer periphery of the housing 10 to prevent heat loss to the outside of the cavity. The heat insulation layer 13 can be made of heat insulation materials such as aerogel or vacuum insulation tube.

[0039] A second aspect of this application provides a heated cigarette device, including the heating structure described in the above-described application embodiments.

[0040] When using the heated cigarette device of this application embodiment, the cigarette stick is fixed in the cavity corresponding to the second inner wall 12. The airflow is heated by the cavity corresponding to the first inner wall 11 and flows to the cavity corresponding to the second inner wall 12 to heat the cigarette stick, generating an aerosol that is convenient for the user to inhale.

[0041] The heated cigarette device of this application includes the heating structure of the above embodiments. Therefore, the effects of the above embodiments are also present in this application, and will not be repeated here.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heating structure, characterized in that: The device includes a housing that encloses a cavity. The inner wall of the housing includes a first inner wall and a second inner wall. An airflow is heated in the cavity corresponding to the first inner wall and flows into the cavity corresponding to the second inner wall. The area of ​​the first inner wall is greater than or equal to the area of ​​the second inner wall.

2. The heating structure according to claim 1, characterized in that, The roughness of the first inner wall is greater than or equal to the roughness of the second inner wall.

3. The heating structure according to claim 1, characterized in that, A first rib is formed on the first inner wall, and the first rib extends along the length direction of the inner wall or along the arc direction of the inner wall.

4. The heating structure according to claim 3, characterized in that, There are multiple first ribs, and the multiple first ribs are evenly spaced.

5. The heating structure according to claim 3, characterized in that, The cross-section of the first rib is circular, square, or triangular.

6. The heating structure according to claim 1, characterized in that, A spiral second rib is formed on the first inner wall, and the second rib extends along the length direction of the first inner wall.

7. The heating structure according to any one of claims 1 to 6, characterized in that, The cross-sectional area of ​​the shell increases along the direction of airflow.

8. The heating structure according to any one of claims 1 to 6, characterized in that, The roughness at both ends of the inner wall is greater than the roughness of the rest of the inner wall.

9. The heating structure according to any one of claims 1 to 6, characterized in that, The heating structure also includes a heat insulation layer, which covers the outer periphery of the housing.

10. A heated cigarette smoking device, characterized in that, Includes the heating structure as described in any one of claims 1 to 9.

Images