Composite heating mechanism and electronic smoking set

Abstract

The invention is suitable for the technical improvement field of electronic cigarette heating equipment, and provides a composite heating mechanism and an electronic smoking set, the composite heating mechanism adopts an integrally formed heating assembly, and comprises a cylindrical heat conduction piece with two open ends, a heating coil and a magnetic induction coil, and the coil is arranged in an annular cavity and is fixed with the heat conduction piece. The heating coil is a direct heating unit, and rapid preheating is achieved; the magnetic induction coil is an indirect heating unit and generates an alternating magnetic field to enable the metal heating piece in the cigarette to perform eddy current heating, and deep uniform-temperature heating is achieved. The heating assembly is integrally formed through high-temperature sintering and other processes and is compact in structure, high in shock resistance and long in service life. The mechanism combines the advantages of two heating modes, the heat efficiency and the heating consistency are improved, the mechanism is suitable for various cigarettes, and the electronic smoking set comprising the mechanism can significantly optimize the user experience.

Description

Technical Field

[0001] This invention belongs to the field of electronic cigarette device technology improvement, and particularly relates to a composite heating mechanism that can adapt to different types of cigarettes and perform efficient and uniform heating, and has a cigarette detection function, as well as an electronic cigarette device containing the mechanism. Background Technology

[0002] Heated tobacco products work by heating the tobacco in the cigarette to a temperature that atomizes the tobacco but is not hot enough to burn (generally between 220 and 350°C). In other words, the tobacco is roasted without burning it, allowing it to emit a flavor similar to real cigarettes.

[0003] As an alternative to traditional tobacco, the heating performance of electronic cigarettes directly impacts the user experience. Current electronic cigarette heating technologies primarily employ resistance heating or electromagnetic induction heating. Resistance heating directly heats the cigarette through a heating coil, transferring heat to the cigarette. However, it suffers from uneven heating, slow response, and low thermal efficiency, potentially leading to localized overheating or underheating. Furthermore, pure resistance heating exhibits poor uniformity in radial temperature distribution within the cigarette, affecting the quality of the heating process. Electromagnetic induction heating generates an alternating magnetic field through a magnetic coil, causing eddy currents in the metal heating element within the cigarette, resulting in heating. However, when used alone, the initial heating speed is slow, and its heating effect on non-metallic parts (such as tobacco and flavorings) is limited. Additionally, current technologies lack a design that utilizes electromagnetic induction to detect the cigarette's insertion status, making it impossible to accurately determine whether the cigarette is correctly inserted and initiate heating.

[0004] Furthermore, existing heating mechanisms are mostly modular assembly structures, with assembly errors and loosening risks between components, affecting structural stability and heat transfer efficiency. They also lack dedicated welding pad designs, resulting in insufficient reliability of connections to external circuits. Therefore, there is a need in the existing technology for a composite heating mechanism that combines the advantages of resistance heating and electromagnetic induction heating to achieve rapid and uniform heating, possess cigarette detection capabilities, and has a stable structure and reliable connections, thereby improving heating efficiency, detection accuracy, and user experience. Summary of the Invention

[0005] The purpose of this invention is to provide a composite heating mechanism and electronic cigarette device, aiming to solve the technical problems of uneven heating, slow response speed, low thermal efficiency, lack of cigarette detection function, and insufficient structural stability and circuit connection reliability in the prior art.

[0006] The present invention is implemented as follows: a composite heating mechanism includes an integrally formed independent heating element, which is an indivisible independent whole. The independent heating element includes a heat-conducting pipe with open ends and cylindrical shape, which serves as the core component for heat conduction. The heating circuit and magnetic induction circuit are independently set. The heating circuit is composed of a heating coil, and the magnetic induction circuit is composed of a magnetic coil. The heating coil and the magnetic induction coil are respectively assembled on the heat-conducting pipe. A magnetic welding disk is connected to each end of the magnetic induction coil, and the magnetic welding disk is fixedly disposed at the end of the heat-conducting pipe. The heat pipe is also provided with multiple heating and welding plates, each of which is electrically connected to the corresponding end of the heating coil to realize the conduction between the heating coil and the external circuit.

[0007] A further technical solution of the present invention is: the heat pipe has a layered structure, the heat pipe includes: as a cigarette support component, forming a heating cavity for accommodating and physically contacting the cigarette, and transferring heat energy to the cigarette through a combination of direct contact and heat conduction; As a support and heat dissipation base for the heating coil, it rapidly and evenly conducts the heat generated by the heating coil through resistance heating to the entire contact surface of the cigarette, thereby achieving basic rapid preheating of the cigarette. As a support carrier for the magnetic induction coil, the magnetic induction coil generates an alternating magnetic field after being energized. On the one hand, it causes the metal heating element in the cigarette to generate eddy currents due to electromagnetic induction, thereby achieving deep and uniform heating of the cigarette from the inside out and ensuring that the cigarette is baked evenly. On the other hand, the change of the magnetic field is used to detect the insertion state of the cigarette. Meanwhile, the heat pipe also has a temperature control function. Through its own material properties and structural design, it can achieve temperature regulation and stable control during the heating process, and avoid local overheating.

[0008] A further technical solution of the present invention is: the heating coil, as a direct heating unit, adopts a resistance heating method. When energized, it uses its own resistance characteristics to directly convert electrical energy into heat energy, which is then directly transferred to the heat pipe through heat conduction, and then quickly transferred to the cigarette, providing a rapid preheating effect for the initial heating stage and meeting the requirements for rapid heating of the cigarette.

[0009] A further technical solution of the present invention is: the magnetic induction coil, as an indirect heating unit, generates a periodically changing alternating magnetic field when working. This alternating magnetic field penetrates the heat pipe and acts on the metal heating element inside the cigarette, causing eddy currents to be generated inside the metal heating element and converted into heat energy, thereby achieving efficient and uniform heating of tobacco and spices inside the cigarette, compensating for the unevenness of radial temperature distribution in pure resistance heating, and improving the roasting quality of the cigarette.

[0010] A further technical solution of the present invention is: the heat pipe is a coaxial double-layer structure, including an inner tube and an outer tube, wherein the inner tube and the outer tube are coaxially assembled and form a sealed annular cavity between them; Both the heating coil and the magnetic coil are disposed within the annular cavity and are fixed to the outer wall of the inner tube and / or the inner wall of the outer tube by means of bonding, embedding or winding, thereby achieving a stable assembly of the coil and the heat-conducting tube.

[0011] A further technical solution of the present invention is: the magnetic induction coil is wound around the corresponding mounting surface of the heat-conducting pipe by a winding method, and the resistance of the magnetic induction coil is close to zero, so as to ensure that a stable alternating magnetic field with sufficient strength can be generated after energization, thereby improving the efficiency of electromagnetic induction heating and the sensitivity of cigarette detection.

[0012] A further technical solution of the present invention is that the independent heating element is manufactured by any one of high-temperature sintering process, injection molding process or die casting process, and the heat pipe, heating coil, magnetic coil, heating welding plate and magnetic welding plate are integrally formed to form an inseparable independent whole structure, ensuring the connection stability of each component and the integrity of the structure.

[0013] A further technical solution of the present invention is: the heat pipe is made of a magnetically inert and high-temperature resistant material, such as ceramic material, glass material or other magnetically inert and high-temperature resistant composite material. The magnetically inert material can avoid interfering with the alternating magnetic field generated by the magnetic coil, and the high-temperature resistant characteristics ensure that the heat pipe maintains structural stability and reliable performance in a high-temperature environment during the heating process.

[0014] Another object of the present invention is to provide an electronic cigarette device, the electronic cigarette device including a composite heating mechanism, the composite heating mechanism being connected to the control circuit of the electronic cigarette device through a heating welding plate and a magnetic welding plate, to achieve precise control of heating start-up, temperature adjustment, cigarette detection and heating mode switching.

[0015] The beneficial effects of this invention are: by integrating the heat pipe, heating coil, magnetic coil, heating welding pad and magnetic welding pad into an independent whole through an integral molding process, the errors and loosening problems of separate assembly are avoided, the structure is more compact, the shock resistance is strong, the service life is significantly extended, and the reliability of connection with external circuits is ensured.

[0016] By combining resistance heating and electromagnetic induction heating, rapid and uniform heating of cigarettes is achieved: the heating coil provides rapid initial preheating to meet the rapid temperature rise requirements of cigarettes; the magnetic coil provides deep and uniform heating to compensate for the unevenness of radial temperature distribution in pure resistance heating. The dual-mode working together improves thermal efficiency and heating consistency, thereby enhancing the quality of cigarette baking.

[0017] The heat pipe uses magnetically inert high-temperature resistant materials and a double-layer coaxial structure, which avoids interference with the alternating magnetic field and enables efficient heat conduction and distribution, reducing heat loss. At the same time, it achieves temperature regulation and stable control through its own material properties and structural design, avoiding local overheating.

[0018] The alternating magnetic field generated when the magnetic coil is energized can not only achieve deep and uniform heating, but also detect the insertion status of the cigarette through changes in the magnetic field. Combined with the control circuit of the electronic cigarette device, it can accurately realize heating start-up, temperature adjustment, cigarette detection and heating mode switching, further improving the user experience.

[0019] The one-piece molded independent heating element has a compact structure, high reliability, is easy to manufacture and install, reduces production costs, and is suitable for a variety of electronic cigarette devices, with a wide range of applications. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the composite heating mechanism provided in an embodiment of the present invention.

[0021] Figure 2 This is a schematic cross-section of the composite heating mechanism provided in an embodiment of the present invention. Figure 1 ; Figure 3 This is a schematic cross-section of the composite heating mechanism provided in an embodiment of the present invention. Figure 2 .

[0022] Figure 4 This is a schematic cross-section of the composite heating mechanism provided in an embodiment of the present invention. Figure 3 .

[0023] Figure 5 This is a schematic cross-section of the composite heating mechanism provided in an embodiment of the present invention. Figure 4 .

[0024] Figure 6 This is a schematic cross-section of the composite heating mechanism provided in an embodiment of the present invention. Figure 5 .

[0025] Reference numerals: 1-Independent heating element, 2-Heat pipe, 21-Inner tube, 22-Outer tube, 23-Annular cavity, 3-Heating coil, 4-Magnetic coil, 11-5-Heating welding plate, 12-6-Magnetic welding plate Detailed Implementation Embodiments of the present invention are described in detail below, examples of which 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.

[0026] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] like Figure 1-6 As shown, the composite heating mechanism provided by the present invention includes an integrally formed independent heating element 1, which is an indivisible independent whole, specifically including a heat-conducting pipe 2, a heating coil 3, a magnetic induction coil 4, a heating welding plate 5, and a magnetic induction welding plate 6.

[0028] The heat pipe 2 is a cylindrical structure with open ends, made of magnetically inert and high-temperature resistant alumina ceramic material. It has a layered structure, specifically a coaxial double-layer structure, including an inner tube 21 and an outer tube 22. The inner tube 21 and outer tube 22 are coaxially assembled, forming a sealed annular cavity 23 between them. The inner tube 21 has an outer diameter of 8mm, an inner diameter of 6mm (suitable for standard cigarette diameters), and a length of 30mm. The outer tube 22 has an outer diameter of 12mm, an inner diameter of 10mm, and a length consistent with the inner tube 21. The annular cavity 23 is 2mm wide, and both ends are sealed by ceramic sintering to prevent foreign objects from entering. The heat pipe 2 serves as a cigarette carrier, forming a heating cavity inside to accommodate and physically contact the cigarette. It also acts as a support and heat dissipation base for the heating coil 3, and a support carrier for the magnetic coil 4. Through the properties of its ceramic material and the double-layer structure design, it achieves temperature regulation and stable control during the heating process, avoiding localized overheating.

[0029] The heating coil 3, serving as a direct heating unit, employs a resistance heating method and is made of nickel-chromium alloy wire with a diameter of 0.3 mm and a resistance of 5 Ω. The heating coil 3 is tightly wound around the outer wall of the inner tube 21 (within the annular cavity 23), with twenty turns, and is securely assembled with the heat-conducting pipe 2 via adhesive bonding. Two heating welding pads 5 are electrically connected to the ends of the heat-conducting pipe 2, each corresponding to one end of the heating coil 3, thus enabling the heating coil 3 to conduct to the external circuit. When energized, the heating coil 3 utilizes its own resistance characteristics to directly convert electrical energy into heat energy, which is then directly transferred to the heat-conducting pipe 2 via heat conduction, and subsequently rapidly transferred to the cigarette, providing a rapid preheating effect for the initial heating stage.

[0030] The magnetic coil 4, serving as an indirect heating unit, is made of pure copper wire with a diameter of 0.2 mm and a resistance approaching zero (measured at ≤0.1 Ω). The magnetic coil 4 is loosely wound around the inner wall of the outer tube 22 (within the annular cavity 23), with thirty turns, and is securely assembled with the heat-conducting tube 2 via adhesive bonding. The magnetic coil 4 and the heating coil 3 are arranged in layers within the annular cavity 23, with a spacing of 0.5 mm to avoid mutual interference during operation. The two ends of the magnetic coil 4 are connected to magnetic welding pads 6, which are fixedly mounted on the ends of the heat-conducting tube 2. Two magnetic welding pads 6 are provided, each electrically connected to one end of the magnetic coil 4. During operation, an alternating current is passed through the magnetic coil 4 to generate a periodically changing alternating magnetic field. This alternating magnetic field penetrates the heat pipe 2 and acts on the metal heating element (such as stainless steel sheet, iron alloy particles, etc.) inside the cigarette, causing eddy currents to be generated inside the metal heating element and converted into heat energy, thereby achieving efficient and uniform heating of the tobacco and spices inside the cigarette. At the same time, when the cigarette is inserted into or removed from the heating cavity, it will cause a change in the alternating magnetic field. By detecting this change in the magnetic field, the insertion status of the cigarette can be detected.

[0031] The independent heating element 1 is manufactured through a high-temperature sintering process: first, the heating coil 3 and the magnetic induction coil 4 are fixed to the preset positions on the outer wall of the inner tube 21 and the inner wall of the outer tube 22 respectively by adhesive bonding; the heating welding plate 5 is electrically connected to the corresponding endpoints of the heating coil 3, and the magnetic induction welding plate 6 is electrically connected to the corresponding endpoints of the magnetic induction coil 4; then, the inner tube 21 and the outer tube 22 are coaxially aligned and assembled, placed in a sintering furnace, and kept at 1200℃ for 2 hours, so that the ceramic heat-conducting pipe 2, the heating coil 3, the magnetic induction coil 4, the heating welding plate 5, and the magnetic induction welding plate 6 are firmly fused into an inseparable independent whole, ensuring the connection stability and structural integrity of each component.

[0032] During operation, when the electronic cigarette is activated, the control circuit first energizes the heating coil 3 through the heating welding plate 11. The heating coil 3 heats up rapidly and directly heats the cigarette through the heat pipe 2, achieving rapid preheating, for example, reaching the initial heating temperature within 1-3 seconds. Simultaneously, the control circuit energizes the magnetic induction coil 4 through the magnetic induction welding plate 6, supplying a 20kHz alternating current to generate an alternating magnetic field in the magnetic induction coil 4. This field detects whether the cigarette is inserted (if the detected magnetic field change matches the cigarette insertion characteristics, the cigarette is confirmed to be correctly inserted and heating is maintained; if no corresponding magnetic field change is detected, subsequent heating is not initiated or heating is stopped). Simultaneously, it generates eddy currents in the metal heating element inside the cigarette, heating it from the inside and ensuring uniform heating of the tobacco and flavorings, with a temperature distribution deviation of less than ±5℃. This composite heating method, combined with the cigarette detection function, avoids localized overheating and precisely controls the heating start-up, improving heating uniformity, efficiency, and safety.

[0033] The present invention also provides an electronic cigarette device, including the above-mentioned composite heating mechanism, and further including an electronic cigarette device body, a power module, a control module, a cigarette holder cavity, and a suction channel.

[0034] The main body of the electronic cigarette device is made of ABS plastic, with an internal mounting cavity to accommodate various components. The power module uses a lithium battery with a capacity of 1500mAh, which supplies power to the heating coil 3 and the magnetic induction coil 4 through the control module. The control module uses an MCU microcontroller with a built-in heating control program. The composite heating mechanism is connected to the control module (i.e., the control circuit of the electronic cigarette device) through the heating welding plate 5 and the magnetic induction welding plate 6, so as to achieve precise control of heating start-up, temperature adjustment, cigarette detection, and heating mode switching.

[0035] The cigarette holder cavity and the heating cavity of the heat-conducting pipe 2 are coaxially arranged. After the cigarette is inserted, its outer wall is in close contact with the inner wall of the inner tube 21. The metal heating element inside the cigarette is directly facing the magnetic field area of ​​the magnetic coil 4. The suction channel connects the cigarette holder cavity with the outside world and is used to discharge the aerosol generated by heating.

[0036] The specific workflow is as follows: The user inserts the cigarette into the cigarette holder cavity, with the outer wall of the cigarette tightly fitted to the inner wall of the inner tube 21 of the heat-conducting pipe 2. The metal heating element inside the cigarette is located within the magnetic field coverage of the magnetic coil 4. When the electronic cigarette is activated, the control module first powers the magnetic coil 4 through the magnetic welding plate 6 and detects changes in the magnetic field. After confirming that the cigarette is correctly inserted, it powers the heating coil 3 through the heating welding plate 5 (outputting 5W power). The resistance heating is quickly transferred to the inner tube 21, completing the preheating of the cigarette surface within 3 seconds, causing the surface temperature of the heating cavity of the heat-conducting component 2 to rise rapidly to 150℃. After preheating, the control module synchronously adjusts the heating coil 3 to maintain 3W power, and the magnetic coil 4 outputs 10W power, maintaining the surface temperature of the heat-conducting pipe 2 at 180℃. The metal heating element inside the cigarette is heated to 250℃ through eddy current heating, achieving coordinated heating inside and outside. The user completes the inhalation through the suction channel. After inhalation, the control module cuts off the power supply to the dual coils within 1 second through the heating welding plate 5 and the magnetic welding plate 6 to avoid excessive baking by residual heat.

[0037] Example 1: Composite Heating Mechanism The heat-conducting component 2 is made of alumina ceramic. The outer diameter of the inner tube 21 is 8mm and the inner diameter is 6mm, which is compatible with the diameter of a conventional cigarette and the length is 30mm. The outer tube 22 has an outer diameter of 12mm and an inner diameter of 10mm, and the length is the same as that of the inner tube 21. The inner tube 21 and the outer tube 22 are coaxially nested, forming a closed annular cavity 23 with a width of 2mm. The two ends of the annular cavity are sealed by ceramic sintering to prevent foreign objects from entering.

[0038] The heating coil 3 is made of nickel-chromium alloy wire with a diameter of 0.3 mm and a resistance of 5 Ω. It is tightly wound around the outer wall of the inner tube 21 with twenty turns. Wires are led out from both ends of the coil to connect to the power supply.

[0039] The magnetic induction coil 4 is made of pure copper wire with a diameter of 0.2mm and a resistance close to zero, measured to be ≤0.1Ω. The coil is wound loosely on the inner wall of the outer tube 22, with thirty turns. Wires are led out from both ends of the coil to connect to an alternating current source. The magnetic induction coil 4 and the heating coil 3 are arranged in layers within the annular cavity 23 with a spacing of 0.5mm to avoid mutual interference during operation.

[0040] One-piece molding process: First, fix the heating coil 3 and the magnetic induction coil 4 into the preset slots on the outer wall of the inner tube 21 and the inner wall of the outer tube 22, respectively; Align the inner tube 21 and the outer tube 22 coaxially, place them in a sintering furnace, and keep them at 1200℃ for 2 hours to firmly fuse the ceramic inner tube, outer tube and coil into one. After sintering, the coil is encased and fixed in ceramic material, with only the lead wires exposed to the outside.

[0041] Example 2: Electronic cigarette device The main body of the electronic cigarette device is made of ABS plastic, with an internal mounting cavity to accommodate various components. The power module uses a lithium battery with a capacity of 1500mAh, providing 12V DC power to the heating coil 3 and 24V, 20kHz AC current to the magnetic coil 4. The control module uses an MCU microcontroller with a built-in heating control program, which can achieve the following: Start-up phase (0-3 seconds): Only the heating coil 3 is activated, outputting 5W power to quickly raise the surface temperature of the heating chamber of the heat conductor 2 to 150℃, completing the preheating of the cigarette; Inhalation phase (after 3 seconds): The heating coil 3 is activated simultaneously (maintaining 3W power) and the magnetic coil 4 (outputting 10W power), maintaining the surface temperature of the heat conductor at 180℃, and the metal heating element inside the cigarette is heated to 250℃ through eddy current heating, achieving coordinated heating inside and outside; After stopping inhalation, the power supply to both coils is cut off within 1 second to avoid excessive baking by residual heat.

[0042] The cigarette holder cavity and the heating cavity of the heat-conducting component 2 are coaxially arranged. After the cigarette is inserted, its outer wall is in close contact with the inner wall of the inner tube 21, and the metal heating element inside the cigarette is facing the magnetic field area of ​​the magnetic coil 4. The suction channel connects the cigarette holder cavity to the outside and is used to discharge the aerosol generated by heating.

[0043] The user inserts the cigarette into the cigarette holder cavity. The outer wall of the cigarette is in close contact with the inner wall of the inner tube 21 of the heat conductor 2. The metal heating element inside the cigarette is located within the magnetic field coverage of the magnetic coil 4. When the electronic cigarette is started, the control module first drives the heating coil 3 to be energized, and the resistance heating is quickly transferred to the inner tube 21, completing the preheating of the cigarette surface within 3 seconds. After preheating is completed, the control module synchronously starts the magnetic induction coil 4, and the alternating current is passed in to generate an alternating magnetic field. The metal heating element inside the cigarette generates eddy currents and heats up, and conducts heat from the inside of the cigarette to the outside. The dual heating units work together to evenly bake the tobacco or spices inside the cigarette within a temperature range of 180-250℃, producing a stable aerosol, which the user can then inhale through the suction channel. After suction is completed, the control module cuts off the power, and the heating mechanism cools down rapidly.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A composite heating mechanism, characterized in that, It includes an integrally formed independent heating element, which is an indivisible independent whole. The independent heating element includes a heat-conducting pipe with open ends and cylindrical shape, which serves as the core component for heat conduction. The heating circuit and magnetic induction circuit are independently set. The heating circuit is composed of a heating coil, and the magnetic induction circuit is composed of a magnetic coil. The heating coil and the magnetic induction coil are respectively assembled on the heat-conducting pipe. A magnetic welding disk is connected to each end of the magnetic induction coil, and the magnetic welding disk is fixedly disposed at the end of the heat-conducting pipe. The heat pipe is also provided with multiple heating and welding plates, each of which is electrically connected to the corresponding end of the heating coil to realize the conduction between the heating coil and the external circuit.

2. The composite heating mechanism according to claim 1, characterized in that, The heat pipe has a layered structure and includes: a heating cavity that serves as a cigarette support component, forming a heating cavity for accommodating and physically contacting the cigarette, and transferring heat energy to the cigarette through a combination of direct contact and heat conduction; As a support and heat dissipation base for the heating coil, it rapidly and evenly conducts the heat generated by the heating coil through resistance heating to the entire contact surface of the cigarette, thereby achieving basic rapid preheating of the cigarette. As a support carrier for the magnetic induction coil, the magnetic induction coil generates an alternating magnetic field after being energized. On the one hand, it causes the metal heating element in the cigarette to generate eddy currents due to electromagnetic induction, thereby achieving deep and uniform heating of the cigarette from the inside out and ensuring that the cigarette is baked evenly. On the other hand, the change of the magnetic field is used to detect the insertion state of the cigarette. Meanwhile, the heat pipe also has a temperature control function. Through its own material properties and structural design, it can achieve temperature regulation and stable control during the heating process, and avoid local overheating.

3. The composite heating mechanism according to claim 2, characterized in that, The heating coil, as a direct heating unit, adopts a resistance heating method. When energized, it uses its own resistance characteristics to directly convert electrical energy into heat energy, which is then directly transferred to the heat pipe through heat conduction, and then quickly transferred to the cigarette. This provides a rapid preheating effect for the initial heating stage, meeting the requirements for rapid heating of the cigarette.

4. The composite heating mechanism according to claim 3, characterized in that, The magnetic coil, as an indirect heating unit, generates a periodically changing alternating magnetic field during operation. This alternating magnetic field penetrates the heat pipe and acts on the metal heating element inside the cigarette, causing eddy currents to be generated inside the metal heating element and converted into heat energy. This achieves efficient and uniform heating of the tobacco and spices inside the cigarette, compensating for the unevenness of the radial temperature distribution in the cigarette under pure resistance heating, and improving the quality of cigarette roasting.

5. The composite heating mechanism according to claim 4, characterized in that, The heat pipe has a coaxial double-layer structure, including an inner tube and an outer tube, wherein the inner tube and the outer tube are coaxially assembled and form a sealed annular cavity between them. Both the heating coil and the magnetic coil are disposed within the annular cavity and are fixed to the outer wall of the inner tube and / or the inner wall of the outer tube by means of bonding, embedding or winding, thereby achieving a stable assembly of the coil and the heat-conducting tube.

6. The composite heating mechanism according to claim 5, characterized in that, The magnetic coil is wound around the corresponding mounting surface of the heat pipe. The resistance of the magnetic coil is close to zero, which ensures that a stable alternating magnetic field with sufficient strength can be generated after energization, thereby improving the efficiency of electromagnetic induction heating and the sensitivity of cigarette detection.

7. The composite heating mechanism according to claim 6, characterized in that, The independent heating element is manufactured by any one of high-temperature sintering, injection molding, or die casting. The heat pipe, heating coil, magnetic coil, heating welding plate, and magnetic welding plate are integrally formed to create an inseparable independent whole structure, ensuring the connection stability of each component and the integrity of the structure.

8. The composite heating mechanism according to claim 7, characterized in that, The heat pipe is made of a magnetically inert and high-temperature resistant material, such as ceramic, glass, or other magnetically inert and high-temperature resistant composite materials. The magnetically inert material can avoid interfering with the alternating magnetic field generated by the magnetic coil, and the high-temperature resistant properties ensure that the heat pipe maintains structural stability and reliable performance in a high-temperature environment during the heating process.

9. An electronic cigarette device, characterized in that, The electronic cigarette device includes the composite heating mechanism as described in any one of claims 1-8. The composite heating mechanism is connected to the control circuit of the electronic cigarette device through a heating welding plate and a magnetic welding plate to achieve precise control of heating start-up, temperature adjustment, cigarette detection, and heating mode switching.

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