Heating module and aerosol generating apparatus

Abstract

A heating module (1100) and an aerosol generating apparatus (1000). The heating module (1100) in the embodiments of the present application comprises a heating pot body (10), a first electrode (110), and a second electrode (120). The heating pot body (10) is formed to have an accommodating cavity (101) for accommodating an aerosol-forming matrix (20). The first electrode (110) and the second electrode (120) are arranged outside the accommodating cavity (101) at an interval, and the first electrode (110) and / or the second electrode (120) comprise a discharge end part (140) and a conductive part (130) connected to the discharge end part (140); the conductive part (130) extends from the discharge end part (140) in the radial direction of the heating pot body (10) or in the direction away from the pot bottom (11) of the heating pot body (10); when the first electrode (110) and the second electrode (120) are energised, an electric arc is formed between the discharge end parts (140) of the first electrode (110) and the second electrode (120) so as to heat the heating pot body (10).

Description

Heating module and aerosol generating device

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 202420156325.8 filed with the State Intellectual Property Office of China on January 22, 2024, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of aerosol generating devices, and in particular to a heating module and an aerosol generating device. Background Art

[0004] An aerosol-generating device can be used to heat an aerosol-forming substrate to form an aerosol through heating without combustion. In related art, an aerosol-generating device includes a heating pot and an electrode pair. The aerosol-forming substrate can be housed in the heating pot, and the electrode pair discharges an electric arc outside the heating pot. Effectively utilizing the heat from the arc to heat the heating pot is a key technical issue. Summary of the Invention

[0005] The present application provides a heating module and an aerosol generating device.

[0006] The heating module of the present embodiment includes a heating pot, a first electrode, and a second electrode. The heating pot forms a housing for accommodating an aerosol-forming substrate. The first electrode and the second electrode are spaced apart and disposed outside the housing. The first electrode and / or the second electrode include a discharge end and a conductive portion connected to the discharge end. The conductive portion extends from the discharge end in a radial direction of the heating pot or away from the bottom of the heating pot. When the first and second electrodes are energized, an arc is formed between the discharge ends of the first and second electrodes, thereby heating the heating pot.

[0007] In the aerosol generating device of the embodiment of the present application, the first electrode and the second electrode are arranged at intervals outside the accommodating cavity, and the conductive parts of the first electrode and the second electrode extend from the discharge end in the radial direction of the heating pot body or away from the bottom of the heating pot body, thereby ensuring that the discharge end is the end closest to the first electrode and the second electrode, ensuring that the first electrode and the second electrode discharge at the discharge end to form an arc, so that the arc heat is more concentrated on the bottom of the pot, effectively heating the heating pot body, and improving the utilization rate of the arc heat.

[0008] In some embodiments, the heating pot body has an opening opposite to the bottom of the heating pot body, and the conductive portion includes a first conductive segment, a second conductive segment, and a third conductive segment connected in sequence, one end of the first conductive segment is connected to the discharge end and the other end thereof extends from the discharge end toward the opening, the second conductive segment extends along the radial direction of the heating pot body, and the third conductive segment extends from the second conductive segment toward the direction away from the opening.

[0009] In this way, the conductive part extends a certain distance toward the opening and then extends radially along the heating pot body, and then turns again to extend in a direction away from the opening, which can reduce the volume of the heating module and allow the high-temperature heat of the first electrode and the second electrode to be fully retained at the bottom of the heating pot body, reducing outward heat conduction and improving heat utilization.

[0010] In some embodiments, the heating pot body has an opening opposite to the bottom of the heating pot body, the conductive portion includes a first conductive segment and a second conductive segment, the first conductive segment connects the second conductive segment and the discharge end, the first conductive segment extends radially along the heating pot body, and the second conductive segment extends from the first conductive segment in a direction away from the opening.

[0011] In this way, the first conductive segment extends radially along the heating pot body, and the second conductive segment extends from the second conductive segment in a direction away from the opening, so that the heat generated by the arc formed by discharge between the discharge ends can be fully retained at the bottom of the heating pot body, reducing outward heat conduction and improving heat utilization. At the same time, it is beneficial to reduce the space occupied by the conductive part and is conducive to miniaturization of the device.

[0012] In some embodiments, along the tangential direction of the heating pot, the cross-sectional area of ​​the first conductive segment is smaller than or equal to the cross-sectional area of ​​the discharge end.

[0013] In this way, by setting the cross-sectional area of ​​the first conductive segment along the tangent direction of the heating pot body to be smaller than that of the discharge end, the discharge area of ​​the discharge end can be increased without increasing the accommodating space of the conductive part, thereby improving the discharge intensity of the discharge end and the arc formation efficiency.

[0014] In some embodiments, the heating module further includes an insulating insulator, which forms an insulating space. The bottom of the heating pot is accommodated in the insulating space. The discharge ends of the first electrode and the second electrode are both located in the insulating space, and the conductive part is passed through the insulating insulator.

[0015] In this way, by arranging an insulating insulator outside the discharge ends of the first electrode and the second electrode, the arc is formed in the insulating space defined by the outer surface of the heating pot body and the insulating insulator, thereby strengthening the insulation protection of the discharge end and improving the insulation effect of the aerosol generating device.

[0016] In some embodiments, the shortest connection line between the first electrode and the second electrode passes through the bottom of the heating pot.

[0017] In this way, the shortest connection line between the first electrode and the second electrode passes through the bottom of the heating pot, so that the arc is generated at the bottom of the pot, reducing the probability of the arc breaking down along the circumference of the heating pot and improving the heating efficiency.

[0018] In some embodiments, the first electrode and the second electrode are arranged along the radial direction of the heating pot, and the shortest connecting line passes through the center of the bottom of the heating pot.

[0019] In this way, the first electrode and the second electrode pass through the center of the pot bottom along the shortest connecting line of the outer surface of the heating pot, ensuring that the arc is generated at the center of the pot bottom, which is beneficial to the uniformity of heating and the stability of the heating position.

[0020] In some embodiments, the heating pot body includes a side wall and a pot bottom connected to the side wall, the pot bottom is a round bottom structure, and the first electrode and the second electrode are both arranged on the side wall.

[0021] In this way, by arranging the first electrode and the second electrode on the side wall, the insulation can be strengthened, and the discharge ends are arranged at intervals on both sides of the pot bottom, so that the formed arc can easily cover the pot bottom surface.

[0022] In some embodiments, the thickness of the pot bottom is less than the thickness of the side walls.

[0023] In this way, by setting the thickness of the bottom and side walls of the heating pot body within a reasonable range, and further setting the thickness of the pot bottom to be smaller than the thickness of the side walls, the heating efficiency and the heating rate can be improved.

[0024] In some embodiments, an infrared radiation film is provided on the inner surface of the insulating body.

[0025] In this way, by providing an infrared radiation film on the inner surface of the insulating body, the heat insulation capability of the insulating body can be enhanced.

[0026] The aerosol generating device according to an embodiment of the present application includes the heating module described in any one of the above embodiments.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] FIG1 is a schematic structural diagram of an aerosol generating device according to an embodiment of the present application;

[0030] FIG2 is a schematic structural diagram of a heating module according to an embodiment of the present application;

[0031] FIG3 is a schematic diagram of the structure of the heating module according to an embodiment of the present application from a top view;

[0032] FIG4 is a schematic structural diagram of a heating module according to another embodiment of the present application;

[0033] FIG5 is a schematic structural diagram of a heating module according to another embodiment of the present application from a top view;

[0034] FIG6 is a schematic cross-sectional view of the heating module of FIG3 along the AA direction;

[0035] FIG7 is a cross-sectional schematic diagram of a heating module according to another embodiment of the present application;

[0036] FIG8 is a schematic cross-sectional view of the heating module of FIG5 along the BB direction;

[0037] FIG9 is a schematic structural diagram of a first electrode or a second electrode according to an embodiment of the present application;

[0038] FIG10 is a schematic diagram of the exploded structure of an aerosol generating device according to an embodiment of the present application;

[0039] FIG11 is a schematic cross-sectional view of a heating module according to another embodiment of the present application.

[0040] Explanation of the accompanying drawings: Heating pot body 10, pot bottom 11, side wall 12, accommodating cavity 101, opening 102, outer surface 103, pot bottom surface 1031, outer peripheral surface 1032, first electrode 110, second electrode 120, conductive part 130, first conductive segment 131, second conductive segment 132, third conductive segment 133, discharge end 140, aerosol forming matrix 20, sealing part 30, infrared radiation film 40, magnetic part 50; aerosol generating device 1000, shell 200, nozzle assembly 300, insulating and heat-insulating body 400, heat-insulating space 401, accommodating groove 402, insulating structure 411, heating module 1100. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0044] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0046] Referring to FIG. 1 , the present application provides a heating module 1100 and an aerosol generating device 1000. In the present application, the aerosol generating device 1000 refers to a device that can generate aerosols using an aerosol-forming substrate 20. The aerosol-forming substrate 20 is a flower, stem, or leaf product of a plant that has been processed to generate an aerosol upon heating. An aerosol is a colloid formed by solid or liquid particles distributed in a gaseous medium. A user can inhale the aerosol into the oral cavity, nasal cavity, or lungs through the mouth or nose. The aerosol inhaled into the user's respiratory system can be used for a variety of purposes, including food, medicine, health care, and entertainment.

[0047] The heating module 1100 of the present embodiment includes a heating pot 10, a first electrode 110, and a second electrode 120. The heating pot 10 is formed with a receiving cavity 101 for accommodating an aerosol-forming substrate 20. The first electrode 110 and the second electrode 120 are spaced apart and disposed outside the receiving cavity 101. The first electrode 110 and / or the second electrode 120 include a discharge end 140 and a conductive portion 130 connected to the discharge end 140. The conductive portion 130 extends from the discharge end 140 in a radial direction of the heating pot 10 or away from the pot bottom 11 of the heating pot 10. When the first electrode 110 and the second electrode 120 are energized, an arc is formed between the discharge end 140 of the first electrode 110 and the second electrode 120, thereby heating the heating pot 10.

[0048] In the aerosol generating device 1000 of the embodiment of the present application, the first electrode 110 and the second electrode 120 are spaced apart outside the accommodating cavity 101, and the conductive portions 130 of the first electrode 110 and the second electrode 120 extend from the discharge end 140 along the radial direction of the heating pot body 10 or away from the bottom 11 of the heating pot body 10, thereby ensuring that the discharge end 140 is the end closest to the first electrode 110 and the second electrode 120, ensuring that the first electrode 110 and the second electrode 120 discharge at the discharge end 140 to form an arc, so that the arc heat is more concentrated on the bottom 11, effectively heating the heating pot body 10, and improving the utilization rate of the arc heat.

[0049] Specifically, the aerosol-forming substrate 20 in the accommodating cavity 101 may be in a fully solid or semi-solid state. For example, the aerosol-forming substrate 20 may be a paste or gel. Pastes and gels with high humidity may be applied to the inner wall of the pot bottom 11. Alternatively, a fully solid aerosol-forming substrate 20 may be in the form of relatively finely divided blocks or sheets. The aerosol-forming substrate 20 as a whole may have a certain degree of fluidity and may be deposited on the bottom of the heating pot body 10.

[0050] Referring to Figures 3 and 6 , the bottom of the heating pot base 11 can be closed and form the pot base 11. The end of the heating pot body 10 opposite the pot base 11 can form an opening 102, with the end forming the opening 102 being the top of the heating pot body 10. In this application, the direction from the opening 102 of the heating pot body 10 toward the pot base 11 is defined as the top-to-bottom direction, and the direction from the center of the opening 102 toward the geometric center of the pot base 11 is defined as the axial direction of the heating pot body 10, i.e., the vertical direction of the heating pot body 10 and the aerosol generating device 1000. The transverse direction of the heating pot body 10 and the aerosol generating device 1000 is perpendicular to the aforementioned vertical direction. The cross-sectional shapes of the inner and outer contours of the heating pot body 10 include, but are not limited to, circular, elliptical, regular quadrilateral, rectangular, polygonal, and other polygons with rounded corners or curved edges. For example, this application assumes that the cross-sectional shapes of the inner and outer contours of the heating pot body 10 are circular, and the circumferential direction of the outer contour cross-sectional shape is the circumferential direction of the heating pot body 10.

[0051] It should be noted that arc discharge is a gas discharge phenomenon. It occurs when a strong electric field causes the gas between a pair of electrodes to be ionized and form a plasma, also known as an arc. The generation of an arc is accompanied by a dazzling glow and a large amount of heat. The first electrode 110 and the second electrode 120 are spaced apart. Applying high voltage to the first electrode 110, 120 ionizes the gas in the space between the first electrode 110, 120 to generate an arc. The heat from the arc rapidly raises the temperature of the heating pot 10 to a relatively high level, heating the aerosol-forming substrate 20 in the accommodating chamber 101 and causing it to atomize to form an aerosol. It is understood that during the discharge process, the temperature of the first electrode 110 and the second electrode 120 also rises, providing a certain amount of heat for the atomization of the aerosol-forming substrate 20.

[0052] Please refer to FIG. 6 and FIG. 7 . In some embodiments, the bottom 11 of the heating pot body 10 is a flat bottom structure or a round bottom structure.

[0053] Specifically, the outer surface 103 of the heating pot body 10 includes a pot bottom surface 1031 and an outer peripheral surface 1032 connected to the pot bottom surface 1031. The pot bottom surface 1031 faces away from the accommodating cavity 101 and toward the insulating body 400. The outer peripheral surface 1032, where it connects to the outer contour edge of the pot bottom surface 1031, can extend upward from the pot bottom 11 along the axial direction of the heating pot body 10 to the opening 102.

[0054] As shown in Figure 7, the pot bottom 11 has a flat bottom structure. The pot bottom surface 1031 can be entirely flat, or it can include a flat surface and a rounded transition surface at the outer edge. The connection between the pot bottom 11 and the side wall 12 can have a certain radius to form a transition surface. The pot bottom surface 1031 and the inner wall surface of the accommodating cavity 101 can have one of the two surfaces being flat, while the other has a certain curvature.

[0055] As shown in Figure 6, the pot bottom 11 has a rounded bottom structure, and can protrude downward along the axial direction of the heating pot body 10. The inner and outer contours of the center of the pot bottom 11 are both arc-shaped, and the connection between the pot bottom 11 and the side wall 12 is connected by an arc. The pot bottom surface 1031 can be an entire arc surface, or the pot bottom surface 1031 can be flat at the center or at the edge, with an arc transition.

[0056] Compared with the sharp shape of the pot bottom 11 , the pot bottom 11 has a flat or round bottom structure, which has better uniformity in heat transfer and a relatively large contact area with the arc.

[0057] Please refer to Figures 2 to 4. The heating module 1100 of the embodiment of the present application includes an insulating and heat-insulating body 400, which forms an insulating space 401. The bottom 11 of the heating pot body 10 is accommodated in the insulating space 401. The discharge ends 140 of the first electrode 110 and the second electrode 120 are both located in the insulating space 401, and the conductive part 130 is passed through the insulating and heat-insulating body 400.

[0058] In the aerosol generating device 1000 of the embodiment of the present application, the first electrode 110 and the second electrode 120 form an arc outside the accommodating cavity 101 to heat the aerosol-forming matrix 20 to generate an aerosol. By providing an insulating insulator 400 outside the discharge end 140 of the first electrode 110 and the second electrode 120, the arc is formed in the insulating space 401 defined by the outer surface 103 of the heating pot body 10 and the insulating insulator 400, thereby strengthening the insulation protection of the discharge end 140 and improving the thermal insulation effect of the aerosol generating device 1000.

[0059] Referring to Figures 4 and 6 , the insulating body 400 may be a pot structure, and the heating pot 10 may be partially housed within the insulating body 400. The insulating body 400 may be positioned below the heating pot 10, partially covering the sidewall 12 and enveloping the pot bottom 11. The insulating body 400 defines an insulating space 401, which may be defined by the inner wall surface of the insulating body 400 and the pot bottom surface 1031. The discharge ends 140 of the first electrode 110 and the second electrode 120 are both located within the insulating space 401. When the first and second electrodes 110 and 120 are energized, discharge occurs within the insulating space 401 to generate an arc. The high voltage and high temperature discharge ends 140 and the arc are isolated within the insulating space 401 by the insulating body 400.

[0060] The insulating body 400 may have a bend or rounded corner at the junction of the wall along the depth of the accommodating cavity 101 and the wall opposite the pot bottom 11, and the cross-sectional shape of the insulating body 400 may be approximately U-shaped. The insulating body 400 may continue to extend downward along the depth of the accommodating cavity 101 at the junction of the wall along the depth of the accommodating cavity 101 and the wall opposite the pot bottom 11, and the cross-sectional shape of the insulating body 400 may be approximately H-shaped.

[0061] The heating pot body 10 can be made of a material with good heat resistance, such as quartz, ceramic, or heat-resistant glass. The first electrode 110 and the second electrode 120 can be made of a heat-resistant material with good electrical conductivity, and can be a conductor or a semiconductor. For example, the first electrode 110 and the second electrode 120 can be made of one or more of nickel-based alloys, iron-based alloys, copper-based alloys, zirconium, hafnium, tungsten, graphite, and carbon fiber. The first electrode 110 and the second electrode 120, which discharge and generate an arc when power is applied, can be made of the same or different materials.

[0062] The insulating body 400 can be made of a heat-resistant insulating material, such as quartz, ceramic, or heat-resistant glass. The heating pot 10 transfers arc heat to the aerosol-forming matrix 20 in the accommodating cavity 101. The insulating body 400 isolates the arc, preventing high-voltage discharge from damaging other components and reducing the transfer of arc heat to other components.

[0063] The conductive portion 130 is passed through the insulating body 400 to enhance the insulation reliability of the heating module 1100 .

[0064] Specifically, the first electrode 110 and the second electrode 120 can conduct high-voltage alternating current or high-voltage direct current to generate an arc. The first electrode 110 and the second electrode 120 are connected to a high-voltage power source, and the conductive portions 130 of the first electrode 110 and the second electrode 120 can be connected to the two output terminals of a transformer (not shown). The conductive portions 130 carry a relatively high voltage during the discharge process. When the first electrode 110 and the second electrode 120 are not conducting high-voltage power, the conductive portions 130 can maintain a physical connection to the power source.

[0065] The insulating body 400 can form a receiving groove 402 extending through the insulating body 400, and the conductive portion 130 passes through the receiving groove 402 and extends into the insulating space 401. The insulating body 400 covers the conductive portion 130 from multiple directions, insulating and isolating the conductive portion 130. The insulating body 400 can be assembled with the first electrode 110 and the second electrode 120 to form a modular assembly, facilitating the assembly of the heating module 1100. The insulating body 400 can be fixedly connected to the first electrode 110 and the second electrode 120 by sintering, which facilitates modular assembly and easily maintains the consistency of the relative position of the first electrode 110 and the second electrode 120 during the use cycle.

[0066] In some embodiments, the conductive portion 130 of the first electrode 110 and the conductive portion 130 of the second electrode 120 are spaced apart at an end away from the insulating space 401, and the spacing is greater than the distance between the discharge ends 140 of the first electrode 110 and the second electrode 120. For example, the conductive portion 130 of the first electrode 110 and the conductive portion 130 of the second electrode 120 are spaced apart by a predetermined distance along the radial direction of the heating pot 10 at an end away from the discharge end 140, and the spacing is greater than the lateral width of the insulating body 400. In another example, the conductive portions 130 of the first electrode 110 and the conductive portions 130 of the second electrode 120 are spaced apart by a predetermined distance along the axial direction of the heating pot 10 at ends away from the discharge end 140, and are connected to an external power source (not shown) at staggered heights along the axial direction of the heating pot 10.

[0067] In some embodiments, the heating module 1100 may include an insulating structure 411 in the intervals between the conductive portions 130 to enhance insulation. The insulating structure 411 may be integrally formed with the insulating and heat-insulating body 400, or it may be separately provided and connected to the heating module 1100 through snap-fitting, screwing, or bonding. For example, the insulating structure 411 may be in the form of a rib, an annular ring, or a structural column.

[0068] In some embodiments, an insulating member (not shown) may be provided at the connection between the conductive portion 130 and the power source (not shown) to further improve the insulation reliability of the high-voltage connection of the conductive portion 130. For example, the insulating member may be a structure nested or inserted into the conductive portion 130. For another example, the insulating member may be formed by sealing the connection between the conductive portion 130 and the power source (not shown) with glue.

[0069] Referring to Figures 6 and 7, in some embodiments, the heating pot body 10 has an opening 102 opposite to the pot bottom 11 of the heating pot body 10, and the conductive portion 130 includes a first conductive segment 131, a second conductive segment 132, and a third conductive segment 133 connected in sequence. One end of the first conductive segment 131 is connected to the discharge end 140 and the other end thereof extends from the discharge end 140 toward the opening 102. The second conductive segment 132 extends along the radial direction of the heating pot body 10, and the third conductive segment 133 extends from the second conductive segment 132 in a direction away from the opening 102.

[0070] In this way, the conductive portion 130 extends a certain distance toward the opening 102 and then extends radially along the heating pot body 10, and then turns again to extend in a direction away from the opening 102, so that the high-temperature heat of the first electrode 110 and the second electrode 120 is fully retained at the bottom of the heating pot body 10, reducing outward heat conduction and improving heat utilization.

[0071] Specifically, in this embodiment, the bottom 11 of the heating pot body 10 can be a round bottom structure or a flat bottom structure. The discharge ends 140 of the first electrode 110 and the second electrode 120 can abut against the bottom surface 1031, the outer peripheral surface 1032, or the connection between the bottom surface 1031 and the outer peripheral surface 1032.

[0072] The first conductive segment 131 is located within the insulating space 401, the second conductive segment 132 extends through the insulating body 400, and the third conductive segment 133 is located outside the insulating space 401 and extends from the second conductive segment 132 away from the opening 102. The first conductive segment 131 is connected to the discharge end 140 and can be positioned close to the outer peripheral surface 1032 of the sidewall 12. An angle similar to the outer contour of the insulating body 400 can be formed between the first conductive segment 131, the second conductive segment 132, and the third conductive segment 133. This extends the length of the bottom electrode while reducing the space occupied by the conductive portion 130, thereby reducing the volume of the heating module 1100 and facilitating miniaturization. The second conductive segment 132 can extend through the insulating body 400 in the radial direction of the heating pot 10. The first conductive segment 131 and the third conductive segment 133 can be distributed radially on opposite sides of the same wall of the insulating body 400, making breakdown between the first conductive segment 131 and the third conductive segment 133 less likely. The conductive portion 130 and the discharge end portion 140 may be integrally formed of the same material.

[0073] The conductive portion 130 can be made of a metal material, such as a metal wire, round wire, or flat wire. The excellent ductility of the metal material facilitates the formation of various bending structures and distribution states of the conductive portion 130 within the heating module 1100. The surface of the conductive portion 130 can be coated with an insulating material to prevent discharge between the conductive portions 130 or between the conductive portion 130 and other charged structures.

[0074] Referring to Figures 4, 5 and 8, in some embodiments, the heating pot body 10 has an opening 102 opposite to the bottom 11 of the heating pot body 10, and the conductive portion 130 includes a first conductive segment 131 and a second conductive segment 132. The first conductive segment 131 connects the second conductive segment 132 and the discharge end 140. The first conductive segment 131 extends radially along the heating pot body 10, and the second conductive segment 132 extends from the first conductive segment 131 in a direction away from the opening 102.

[0075] In this way, the first conductive segment 131 extends radially along the heating pot body 10, and the second conductive segment 132 extends from the first conductive segment 131 in a direction away from the opening 102, so that the heat generated by the arc discharged between the discharge ends 140 can be fully retained at the bottom of the heating pot body 10, reducing heat conduction to the outside and improving heat utilization.

[0076] Specifically, the aerosol-forming substrate 20 can enter the accommodating chamber 101 through the opening 102. The aerosol-forming substrate 20 can be applied to the pot bottom 11 and the side wall 12, poured or injected onto the pot bottom 11, or placed directly on the pot bottom 11 using a handheld or transfer tool. The aerosol-forming substrate 20 generated by atomization can flow out of the accommodating chamber 101 through the opening 102.

[0077] The discharge end 140 can be located on the pot bottom surface 1031, the outer circumferential surface 1032, or at the junction of the pot bottom surface 1031 and the outer circumferential surface 1032. The first conductive segment 131 extends from the discharge end 140 toward the periphery of the heating pot body 10, passing through the insulating body 400. The first conductive segment 131 can extend radially along the heating pot body 10 to shorten the length of the first conductive segment 131 extending through the insulating body 400. The second conductive segment 132 can connect to the end of the first conductive segment 131 that extends outside the insulating space 401 and is located outside the insulating space 401. The second conductive segment 132 extends from the end of the first conductive segment 131 away from the discharge end 140 toward the opening 102. The distal end of the second conductive segment 132 can be located away from the heating pot body 10 and connected to an external power source (not shown). By arranging the conductive portion 130 to bend at the insulating body 400, the volume of the heating module 1100 can be reduced while ensuring insulation strength.

[0078] 5 and 9 , in some embodiments, along the tangential direction of the heating pot 10 , the cross-sectional area of ​​the first conductive segment 131 is smaller than or equal to the cross-sectional area of ​​the discharge end 140 .

[0079] In this way, by setting the cross-sectional area of ​​the first conductive segment 131 along the tangent direction of the heating pot body 10 to be smaller than the discharge end 140, the discharge area of ​​the discharge end 140 can be increased without increasing the accommodating space of the conductive portion 130, thereby improving the discharge intensity of the discharge end 140 and the arc formation efficiency.

[0080] Specifically, the first electrode 110 and the second electrode 120 may be distributed radially on either side of the heating pot 10. The first and second electrodes 110, 120 face each other along the tangential direction of the heating pot 10, separated by the heating pot 10 and / or the insulating space 401 and / or the insulating body 400. The discharge ends 140 of the first and second electrodes 110, 120 face each other along the tangential cross-section of the heating pot 10, separated by the insulating space 401 and / or the insulating body 400. Discharge between the discharge ends 140 generates an arc along the shortest possible line connecting the pot bottom surface 1031. The first conductive segment 131 may be thinner than the discharge end 140. Appropriately increasing the cross-sectional area of ​​the discharge end 140 along the tangential direction of the heating pot 10 can increase the effective discharge end surface. Appropriately reducing the cross-sectional area of ​​the first conductive segment 131 facilitates its insertion through the insulating body 400.

[0081] It should be noted that the cross-sectional area of ​​the discharge end 140 along the tangential direction of the heating pot body 10 is slightly larger than the cross-sectional area of ​​the first conductive segment 131 , but the absolute value of the cross-sectional area of ​​the discharge end 140 can still ensure that the discharge end 140 discharges and breaks down to generate an arc.

[0082] In some embodiments, the side of the discharge end 140 facing the outer surface 103 of the heating pot body 10 can form a curved surface that conforms to the outer surface 103 of the heating pot body 10, as shown in FIG5 . Alternatively, the radius of curvature of the curved surface formed by the discharge end 140 facing the outer surface 103 of the heating pot body 10 is consistent with or close to the radius of curvature of the outer surface 103 closest to the discharge end.

[0083] Please refer to FIG. 6 to FIG. 8 . In some embodiments, the shortest connection line between the first electrode 110 and the second electrode 120 passes through the bottom 11 of the heating pot 10 .

[0084] In this way, the shortest connection line between the first electrode 110 and the second electrode 120 passes through the bottom 11 of the heating pot 10, so that the arc is generated at the bottom 11, reducing the probability of the arc breaking down along the circumference of the heating pot 10 and improving the heating efficiency.

[0085] It should be noted that when power is applied to the first and second electrodes 110, 120, discharge occurs between the two ends with the shortest distance. To ensure that the arc is generated between the discharge ends 140 of the first and second electrodes 110, 120, the line connecting the discharge ends 140 of the first and second electrodes 110, 120 needs to be the shortest line. It should also be noted that the shortest line refers to the shortest line between the discharge ends 140 in the air medium, and the shortest line does not pass through the wall of the heating pot 10. Alternatively, the shortest line is the shortest line segment between the first and second electrodes 110, 120 at the outer surface 103 of the heating pot 10. For example, in the embodiment shown in FIG6, line MM is the shortest line between the first and second electrodes 110, 120, and the arc is generated on line MM. For another example, in the embodiment shown in FIG7, line NN is the shortest line between the first and second electrodes 110, 120, and the arc is generated on line NN. The MM line and the NN line are both line segments on the pot bottom surface 1031 .

[0086] In some embodiments, the pot bottom 11 has a round bottom structure, and the shortest connecting line between the first electrode 110 and the second electrode 120 passes through the pot bottom 11 of the heating pot body 10, such as the MM connecting line in Figure 6 and the OO connecting line in Figure 8. The minimum distance between the first electrode 110 and the second electrode 120 in the circumferential direction of the heating pot body 10 is greater than the distance of the connecting line of the discharge end 140 passing through the pot bottom 11. For example, the LL connecting line shown in Figure 3 is a connecting line between the discharge end 140 of the first electrode 110 and the second electrode 120 along the circumference of the heating pot body 10, and the length of the MM connecting line is shorter than the length of the LL connecting line. The discharge end 140 of the first electrode 110 and the second electrode 120 is closer to the central axis of the heating pot body 10 or the center of the pot bottom 11 relative to the conductive portion 130.

[0087] 6 to 8 , in some embodiments, the first electrode 110 and the second electrode 120 are arranged along the radial direction of the heating pot 10 , and the shortest connecting line passes through the center of the pot bottom 11 of the heating pot 10 .

[0088] In this way, the first electrode 110 and the second electrode 120 pass through the center of the pot bottom 11 along the shortest connecting line of the outer surface 103 of the heating pot body 10, ensuring that the arc is generated at the center of the pot bottom 11, which is beneficial to the uniformity of heating and the stability of the heating position.

[0089] Specifically, when energized, the first electrode 110 and the second electrode 120, whose discharge ends 140 discharge to form an arc, form an electrode pair. The electrode pair is arranged radially along the heating pot body 10, with the first electrode 110 and the second electrode 120 located at opposite ends of the same radial direction of the heating pot body 10. As previously described, the shortest line connecting the first electrode 110 and the second electrode 120 is the shortest line segment along the outer surface 103 of the heating pot body 10 between the discharge ends 140 of the first electrode 110 and the second electrode 120. When energized, the first electrode 110 and the second electrode 120 discharge along the shortest line to form an arc. This shortest line passes through the center of the pot bottom 11, allowing the arc to be generated at or near the center of the pot bottom 11, or to pass through the center of the pot bottom surface 1031.

[0090] The number of electrode pairs can be one, two, three, or more. The multiple pairs of first electrodes 110 and second electrodes 120 can be spaced apart and distributed along the circumference of the heating pot 10. Furthermore, the multiple pairs of first electrodes 110 and second electrodes 120 can be evenly distributed along the circumference of the heating pot 10. The shortest connecting line between each pair of first electrodes 110 and second electrodes 120 passes through the center of the bottom 11 of the heating pot 10.

[0091] Referring to Figures 6 and 8, in some embodiments, the heating pot body 10 includes a side wall 12 and a pot bottom 11 connected to the side wall 12. The pot bottom 11 is a round bottom structure, and the first electrode 110 and the second electrode 120 are both arranged on the side wall 12.

[0092] Thus, by arranging the first electrode 110 and the second electrode 120 on the side wall 12 , insulation can be enhanced, and the discharge ends 140 are spaced apart on both sides of the pot bottom 11 , so that the formed arc can easily cover the pot bottom surface 1031 .

[0093] Specifically, the pot bottom 11 and the sidewall 12 define a receiving cavity 101. The sidewall 12 may surround the central axis of the heating pot body 10 and extend axially along the heating pot body 10, connecting the pot bottom 11 and the opening 102. The pot bottom 11 and the sidewall 12 may have equal thickness or the same thickness range. The thickness of the pot bottom 11 and the sidewall 12 may also be different.

[0094] The pot bottom 11 is a round bottom structure, and the pot bottom surface 1031 is an outwardly protruding arc surface, or the pot bottom surface 1031 includes an outwardly protruding arc surface and a flat surface partially located in the center of the pot bottom 11. In this embodiment, the curvature radius of the pot bottom surface 1031 is not limited.

[0095] As previously described, the pot bottom 11 is a round structure, but the outer contour of the heating pot body 10 is not limited to a circular, oval, square, olive, racetrack, or other polygonal shape with curved edges. For example, the cross-sectional shape of the outer contour of the heating pot body 10 can be circular or nearly circular. The outer diameter of the heating pot body 10 ranges from 5 mm to 20 mm (inclusive). The diameter of the outer circumferential surface 1032 of the side wall 12 can be considered the outer diameter of the heating pot body 10. The opening 102 can be defined by the inner circumference of the side wall 12 at the top.

[0096] The discharge ends 140 and conductive portions 130 of the first and second electrodes 110, 120 can be disposed outside the sidewall 12 and can face each other radially relative to the heating pot 10. The first and second electrodes 110, 120 can at least partially abut or fit against the sidewall 12, and the discharge ends 140 can be positioned near the pot bottom 11. As shown in FIG6 , the discharge ends 140 of the first and second electrodes 110, 120 can abut or fit against the outer surface 103 of the heating pot 10. As shown in FIG8 , the discharge ends 140 of the first and second electrodes 110, 120 can also be positioned near the outer surface 103 of the heating pot 10, with a gap formed between them.

[0097] Referring to Figure 11 , in some embodiments, the heating module 1100 further includes a magnetic member 50 spaced apart from the heating pot 10 . The magnetic member 50 is configured to cause the electric arc to rotate around the center of the pot bottom 11 of the heating pot 10 . In this embodiment, the first electrode 110 is positioned close to or in contact with the sidewall 12 of the heating pot 10 , and the second electrode 120 is positioned close to or in contact with the center of the pot bottom 11 .

[0098] In this way, by setting the magnetic part 50 to make the arc rotate relative to the center of the pot bottom 11, each position of the pot bottom surface 1031 can fully exchange heat with the arc during the heating process, thereby making the heating pot body 10 temperature rise and temperature distribution more uniform, and the heating temperature of the aerosol forming matrix 20 at each position of the pot bottom 11 is more uniform and better synchronized.

[0099] Specifically, the discharge end 140 of the first electrode 110 can be annular and can abut against the pot bottom surface 1031, the outer peripheral surface 1032, or the junction between the pot bottom surface 1031 and the outer peripheral surface 1032. There can be two or more first conductive segments 131, which can be spaced apart along the circumference of the heating pot body 10 on the sidewall 12. The discharge end 140 of the first electrode 110 can also be positioned close to the outer surface 103, with a certain gap between the discharge end 140 and the outer surface 103.

[0100] The discharge end 140 of the second electrode 120 can be disc-shaped and can be attached to the center of the pot bottom surface 1031 or embedded in the center of the pot bottom 11. The discharge end 140 of the second electrode 120 can also be placed close to the pot bottom surface 1031 and separated by a certain gap.

[0101] In some extended embodiments, the discharge ends 140 of the first electrode 110 and the second electrode 120 may both be in a film shape and fixed to the outer surface 103 of the heating pot 10 .

[0102] In some embodiments, as shown in FIG11 , the conductive portion 130 of the first electrode 110 includes a first conductive segment 131, a second conductive segment 132, and a third conductive segment 133, which are connected in sequence. One end of the first conductive segment 131 is connected to the discharge end 140, and the other end extends from the discharge end 140 toward the opening 102. The second conductive segment 132 extends radially along the heating pot 10, and the third conductive segment 133 extends from the second conductive segment 132 away from the opening 102. The first conductive segment 131 of the first electrode 110 can be located proximate to the outer circumferential surface 1032. The second conductive segment 132 of the first electrode 110 can extend radially through the insulating body 400 of the heating pot 10. The first and third conductive segments 131, 133 of the first electrode 110 can be distributed radially along the heating pot 10 on opposite sides of the same wall of the insulating body 400, making breakdown between the first and third conductive segments 131, 133 less likely to occur.

[0103] In other embodiments, the conductive portion 130 of the first electrode 110 includes a first conductive segment 131 and a second conductive segment 132. The first conductive segment 131 connects the second conductive segment 132 and the discharge end 140. The first conductive segment 131 extends radially of the heating pot 10, and the second conductive segment 132 extends from the second conductive segment 132 away from the opening 102. The second electrode 120 is disposed on the pot bottom 11. The first conductive segment 131 may be radially extending through the insulating body 400 of the heating pot 10. The second conductive segment 132 may connect to the end of the first conductive segment 131 that extends outside the insulating space 401 and is located outside the insulating space 401. The second conductive segment 132 extends from the end of the first conductive segment 131 away from the discharge end 140 away from the opening 102. The distal end of the second conductive segment 132 may be located away from the heating pot 10 and connected to an external power source (not shown).

[0104] Please refer to FIG. 6 . In some embodiments, the thickness H of the pot bottom 11 is smaller than the thickness D of the side wall 12 .

[0105] In this way, by setting the thickness of the bottom and side wall 12 of the heating pot body 10 within a reasonable range, and further setting the thickness H of the pot bottom 11 to be smaller than the thickness D of the side wall 12, the heating efficiency and the heating rate can be improved.

[0106] Specifically, the thickness H of the pot bottom 11 ranges from 0.4 mm to 1.0 mm (inclusive). Further, the thickness D of the side wall 12 can range from 0.5 mm to 1.0 mm (inclusive), and the thickness H of the pot bottom 11 is selected to be smaller than the thickness D of the side wall 12.

[0107] Specifically, the sidewall 12 may have a uniform thickness, or the thickness D of the sidewall 12 may vary in a gradient or slope. The sidewall 12 may also have a uniform thickness over a large area, with the thickness decreasing or increasing in some areas. For example, the thickness D of the sidewall 12 may be 0.5 mm to 1.0 mm, 0.6 mm to 0.9 mm, 0.63 mm to 0.88 mm, 0.7 mm to 0.9 mm, 0.75 mm to 0.8 mm, etc. For another example, the thickness D of the sidewall 12 may be 0.5 mm, 0.54 mm, 0.65 mm, 0.72 mm, 0.81 mm, 0.97 mm, or 1.0 mm.

[0108] The thickness H of the pot bottom 11 is less than the thickness D of the side wall 12, and the wall thickness at the connection between the pot bottom 11 and the side wall 12 may be gradually thinner from the side wall 12 to the pot bottom 11. The pot bottom 11 may be of uniform thickness, that is, the thickness of the pot bottom 11 is consistent throughout. The pot bottom 11 may also be thinned in some areas to reduce the thermal resistance between the arc and the aerosol-forming matrix 20. At locations where the thickness of the pot bottom 11 is not uniform, the thickness may vary smoothly to avoid discontinuities on the surface of the heated pot body 10. Exemplarily, the thickness H of the pot bottom 11 may range from 0.4 mm to 1.0 mm, 0.45 mm to 0.9 mm, 0.5 mm to 0.8 mm, 0.6 mm to 0.77 mm, etc. For another example, the thickness H of the pot bottom 11 can be 0.4 mm, 0.5 mm, 0.68 mm, 0.75 mm, 0.88 mm, 0.96 mm, 1.0 mm, etc., and the thickness of the thinnest part of the pot bottom 11 can be 0.4 mm, 0.52 mm, 0.65 mm, 0.73 mm, 0.8 mm, etc.

[0109] Referring to FIG. 8 , in some embodiments, an infrared radiation film 40 is disposed on the inner surface of the insulating body 400 .

[0110] In this way, by providing the infrared radiation film 40 on the inner surface of the insulating body 400 , the heat insulation capability of the insulating body 400 can be enhanced.

[0111] It should be noted that the heat generated by the discharge of the first electrode 110 and the second electrode 120 outside the accommodating cavity 101 can be transmitted into the accommodating cavity 101 via infrared radiation or heat transfer, by heating the bottom 11 (and / or a portion of the sidewall 12) of the pot body 10, thereby heating the atomized aerosol-forming matrix 20 and generating an aerosol. The arc heat is also radiated outside the heated pot body 10 in the form of infrared radiation.

[0112] Specifically, the inner surface of the insulating body 400 is the side of the insulating body 400 that faces the heating pot 10 or the discharge end 140. The infrared radiation film 40 can be a coating attached to the inner surface of the insulating body 400. The coating material of the infrared radiation film 40 can be a metal oxide with a high infrared radiation reflectivity. For example, the infrared radiation film 40 can be made of one or more materials such as ferric oxide, manganese dioxide, cobalt oxide, and copper oxide. The infrared radiation film 40 can also be made of a material with a high infrared radiation absorptivity. It can also use a combination of reflection and heat absorption to reduce the outward heat transfer of infrared radiation, thereby reducing the temperature rise on the outside of the insulating body 400.

[0113] Referring to FIG. 10 , in some embodiments, the aerosol generating device 1000 includes a nozzle assembly 300 , and the nozzle assembly 300 covers the accommodating cavity 101 .

[0114] In this way, gas can be blown into the accommodating chamber 101 through the nozzle assembly 300 , and aerosol generated in the accommodating chamber 101 can be sucked away by suction.

[0115] Specifically, the nozzle assembly 300 can be disposed on top of the heating pot body 10 and can be extruded and assembled with the heating pot body 10 at the opening. The heating pot body 10 can have a flange formed at the opening 102 that is connected to the side wall 12 and extends in a different direction from the side wall 12. The sealing member 30 can cover the flange, sealing the assembly gap between the nozzle assembly 300 and the flange. The nozzle assembly 300 can cover the opening 102, allowing aerosol generated in the accommodating chamber 101 to overflow from the opening 102 and be inhaled through the nozzle assembly 300.

[0116] Please refer to FIG. 1 and FIG. 10 again. The aerosol generating device 1000 according to the embodiment of the present application includes the heating module 1100 described in any of the above embodiments.

[0117] Specifically, the aerosol generating device 1000 includes a housing 200 for mounting a heating module 1100. The heating module 1100 can be housed within the housing 200, and the heating pot 10 can be detachably connected to the housing 200. The nozzle assembly 300 can be disposed at one end of the housing 200.

[0118] In the aerosol generating device 1000 of the present embodiment, the conductive portions 130 of the first and second electrodes 110, 120 extend from the discharge end 140 in a direction away from the heated pot body 10. This ensures that the first and second electrodes 110, 120 discharge electricity between the discharge end 140, allowing the arc heat to more effectively heat the pot bottom 11. Furthermore, the conductive portions 130 of the first and second electrodes 110, 120 can change their extension direction at least once to accommodate the internal structure of the aerosol generating device 1000, reducing installation space and achieving a compact structure, which facilitates product miniaturization.

[0119] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0120] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heating module, characterized in that, Comprising: A heating pot body, which is formed with a receiving cavity for receiving an aerosol-forming substrate; A first electrode and a second electrode, which are spaced apart and arranged outside the receiving cavity. When the first electrode and the second electrode are energized, an arc is formed between the first electrode and the second electrode to heat the heating pot body; and An insulating and heat-insulating body, which is formed with a heat-insulating space. The bottom of the heating pot body is received in the heat-insulating space, and the discharge ends of the first electrode and the second electrode are both located in the heat-insulating space.

2. The heating module according to claim 1, wherein The first electrode and / or the second electrode includes a discharge end and a conductive part connected to the discharge end, and the conductive part penetrates through the insulating and heat-insulating body.

3. The heating module according to claim 2, wherein The heating pot body has an opening opposite to the bottom of the heating pot body. The conductive part includes a first conductive section, a second conductive section and a third conductive section connected in sequence. One end of the first conductive section is connected to the discharge end and the other end extends from the discharge end towards the opening. The first conductive section is located in the heat-insulating space, the second conductive section penetrates through the insulating and heat-insulating body, and the third conductive section is located outside the heat-insulating space and extends from the second conductive section towards the direction away from the opening.

4. The heating module according to claim 2, characterized in that The heating pot body has an opening opposite to the bottom of the heating pot body. The conductive part includes a first conductive section and a second conductive section. The first conductive section connects the second conductive section and the discharge end, the first conductive section penetrates through the insulating and heat-insulating body, and the second conductive section is located outside the heat-insulating space and extends from the second conductive section towards the direction away from the opening.

5. The heating module according to claim 4, wherein Along the tangential direction of the heating pot body, the cross-sectional area of the first conductive section is less than or equal to the cross-sectional area of the discharge end.

6. The heating module according to claim 1, wherein The shortest connection line between the first electrode and the second electrode passes through the bottom of the heating pot body; or, the first electrode and the second electrode are arranged oppositely along the radial direction of the heating pot body, and the shortest connection line passes through the center of the bottom of the heating pot body.

7. The heating module according to claim 6, wherein The heating pot body includes a side wall and a bottom connected to the side wall. The bottom is a round-bottom structure, and the first electrode and the second electrode are both arranged on the side wall.

8. The heating module according to claim 7, wherein The thickness of the bottom is less than the thickness of the side wall.

9. The heating module according to claim 1, wherein An infrared radiation film is provided on the inner surface of the insulating and heat-insulating body.

10. An aerosol generating device, characterized in that, Comprising the heating module according to any one of claims 1-9.

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