Support tube, heating module and aerosol generating device

Abstract

The utility model provides a supporting tube, a heating module and an aerosol generating device.The supporting tube comprises a first tube section and a second tube section which are mutually connected in the axis direction, the first tube section is used for containing a heating assembly, and the second tube section is used for containing at least part of an aerosol generating product; at least part of the inner wall of the second pipe section is sunken along the radial outer side to form a sunken part, and the inner wall of the sunken part is separated from the peripheral wall of the aerosol generating product, so that heat of the second pipe section is not conducted to the aerosol generating product corresponding to the second pipe section; and the situation that the aerosol generating product corresponding to the second pipe section is overheated and burnt, and consequently the taste of a user is affected is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and in particular to a support tube, a heating module and an aerosol generating device. Background Art

[0002] The heat-not-burn aerosol generating device includes a heating component and a support tube for accommodating an aerosol-generating product. Since the operating temperature of the heat-not-burn aerosol generating device is relatively high, in order to avoid the high temperature being transferred to the surface of the outer shell of the heat-not-burn aerosol generating device, the support tube is usually insulated to retain the heat generated by the heating component in the heating chamber and avoid it being transferred to the surface of the outer shell.

[0003] In conventional heat-without-combustion aerosol generating devices, the heat generated by the heating assembly is transferred along the inner wall of the support tube to the structural members at the upper and lower ends of the support tube, which not only causes heat loss but may also cause the temperature of the inner wall of the support tube to be too high, causing the aerosol generating product in contact with the support tube to overheat and become burnt. Utility Model Content

[0004] The invention aims to solve the problem that the aerosol generating product is overheated and burnt due to the high temperature of the inner wall of the traditional support tube.

[0005] The present application provides a support tube, comprising a first tube segment and a second tube segment connected to each other in an axial direction, wherein the first tube segment is used to accommodate a heating assembly, and the second tube segment is used to accommodate at least a portion of an aerosol-generating article, and at least a portion of the inner wall of the second tube segment is recessed along its radial outer side to form a recessed portion, and the inner wall of the recessed portion is spaced apart from the outer peripheral wall of the aerosol-generating article.

[0006] The present application provides a support tube, wherein the recessed portion is annular and surrounds the outer circumference of the aerosol generating article.

[0007] The present application provides a support tube, which further includes a straight wall, wherein the straight wall is connected to the end of the second tube segment away from the first tube segment, and the straight wall is provided at the aerosol generating article.

[0008] The present application provides a support tube, wherein the straight wall is tubular and surrounds the outer circumference of the aerosol generating article.

[0009] The present application provides a support tube, wherein the straightened wall is a single-layer structure.

[0010] The present application provides a support tube, which includes an inner tube and an outer tube. The outer tube is placed outside the inner tube, a hollow cavity is defined between the outer circumferential wall of the inner tube and the inner circumferential wall of the outer tube, and the recess is provided on the inner tube.

[0011] The present application provides a support tube, wherein a limiting structure is provided between the first tube segment and the second tube segment, and the limiting structure abuts against at least one of the aerosol generating article and the heating assembly.

[0012] The present application provides a heating module, comprising:

[0013] A support tube, wherein the support tube is the support tube described above; and

[0014] A heating component is arranged in the first pipe section of the support pipe.

[0015] The present application provides a heating module, wherein the support tube further includes a straight wall, the straight wall is connected to the end of the second tube segment away from the first tube segment, and the straight wall is arranged at the aerosol generating article; the heating module further includes an auxiliary heating element, and the auxiliary heating element is arranged on the side of the straight wall away from the aerosol generating article.

[0016] The present application provides a heating module, wherein the auxiliary heating element is a resistance heating element, an infrared heating element or an electromagnetic susceptor heating element.

[0017] The present application provides a heating module, which also includes a bracket, wherein the bracket is provided with a receiving cavity, the heating component is arranged in the receiving cavity, and the bracket is used to support the heating component; the bracket includes a first side wall and a second side wall connected to the first side wall, the first side wall and the second side wall form an angle structure and define an avoidance space, and at least one of the leads of the heating component and the leads of the auxiliary heating element is arranged in the avoidance space.

[0018] The present application provides a heating module, further comprising a wrapping member, wherein the wrapping member is provided with positioning feet.

[0019] The bracket is provided with a positioning groove, which is located radially outside the support tube. The positioning foot passes over the end of the support tube or the positioning foot passes through the end of the support tube to be inserted into the positioning groove, and the end of the support tube abuts against the positioning foot.

[0020] The present application provides a heating module, wherein the heating component is a light heater, an air heater, or a resistance heating needle.

[0021] The present application provides a heating module, further comprising a wrapping member, wherein the wrapping member is located in the first pipe section and covers the outer periphery of the heating component.

[0022] The present application provides a heating module, wherein a plurality of hollow portions are provided on the wrapping member.

[0023] The present application provides a heating module, wherein the wrapping member is provided with a flange portion at one end facing the second tube segment, and the flange portion abuts against the heating component.

[0024] The present application provides a heating module, wherein the wrapping member includes a first positioning portion and a second positioning portion, the first positioning portion and the second positioning portion are distributed along the axial direction of the heating module, and the heating component is located between the first positioning portion and the second positioning portion.

[0025] The present application provides a heating module, wherein the wrapping member includes a positioning foot, the positioning foot is inserted into the positioning groove of the bracket, and the support tube abuts against the wrapping member; or the wrapping member includes a positioning foot, the positioning foot is inserted into the installation groove of the support tube.

[0026] The present application provides a heating module, which also includes a temperature measuring element, wherein the temperature measuring element is sandwiched between the outer peripheral wall of the wrapping piece and the inner peripheral wall of the first pipe section.

[0027] The present application provides an aerosol generating device, comprising:

[0028] A shell having a mounting cavity therein and an insertion port provided on the shell for inserting an aerosol generating product; a heating module, the heating module being the above-mentioned heating module, the second pipe section of the heating module being connected to the insertion port.

[0029] At least part of the inner wall of the second tube section of the support tube provided in the present application is recessed along its radial outer side to form a recessed portion, and the inner wall of the recessed portion is spaced apart from the outer peripheral wall of the aerosol generating product, so that the heat of the second tube section is not conducted to the aerosol generating product corresponding thereto, thereby avoiding overheating and burning of the aerosol generating product corresponding to the second tube section, which affects the user's taste. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0031] Figure 1 A schematic diagram of a support tube according to an embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of a heating module according to an embodiment of the present application;

[0033] Figure 3 This is a schematic diagram of a heating module according to an embodiment of the present application;

[0034] Figure 4A schematic diagram of a heating assembly according to an embodiment of the present application;

[0035] Figure 5 A schematic diagram of a heating assembly according to an embodiment of the present application;

[0036] Figure 6 A schematic diagram of a package and a temperature measuring element according to an embodiment of the present application;

[0037] Figure 7 A schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0038] Figure 8 A schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0039] Figure 9 A schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0040] Figure 10 This is a schematic diagram of a heating module according to an embodiment of the present application;

[0041] Figure 11 A schematic diagram of a package according to an embodiment of the present application;

[0042] Figure 12 This is a schematic diagram of a heating module according to an embodiment of the present application;

[0043] Figure 13 This is a schematic diagram of a package according to an embodiment of the present application.

[0044] In the picture:

[0045] 1. Support tube; 11. First tube section; 111. Position limiting structure; 12. Second tube section; 121. Recessed portion; 13. Straightening wall; 14. Inner tube; 141. Hollow cavity; 15. Outer tube;

[0046] 2. Heating assembly; 21. Translucent cover; 22. Light-emitting element; 23. First lead; 24. Second lead;

[0047] 3. Aerosol generation matrix;

[0048] 4. Auxiliary heating element;

[0049] 5. Bracket; 51. Accommodating cavity; 52. First side wall; 53. Second side wall; 54. Avoidance space;

[0050] 6. Wrapping piece; 61. Hollow portion; 62. Flanged portion; 63. First positioning portion; 64. Second positioning portion; 65. Positioning foot;

[0051] 7. Temperature measuring element; 10. Heating module;

[0052] 20. Housing; 201. Mounting cavity; 202. Insertion port;

[0053] 100. Aerosol generating device. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0055] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or suggesting the quantity or order of the technical features indicated relative to importance or implicitly indicating the indicated technical features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship or movement situation between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or equipment that includes a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0056] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be one or more intermediate elements in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0058] The present application provides a support tube 1 comprising a first tube segment 11 and a second tube segment 12 connected to each other in an axial direction. The first tube segment 11 is configured to accommodate a heating assembly 2, while the second tube segment 12 is configured to accommodate at least a portion of an aerosol-generating article 3. Heat generated by the heating assembly 2 can be transferred within the support tube 1, thereby baking the aerosol-generating article 3.

[0059] The aerosol-generating article 3 may comprise a tobacco-containing material that releases volatile compounds from the substrate upon heating; or a non-tobacco material that is suitable for heating and smoking after heating. The aerosol-generating article 3 may also comprise a solid substrate that may comprise one or more of powder, granules, shredded strips, ribbons, or flakes of one or more of herb leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; or the solid substrate may contain additional tobacco or non-tobacco volatile flavor compounds that are released upon heating.

[0060] It should be noted that the aerosol generating product 3 corresponding to the second tube segment 12 is closer to the heating component 2, and the heat is preferentially transferred to the heating component 2, so that the second tube segment 12 can preferentially obtain sufficient heat.

[0061] In the related art, if the second tube section is in contact with the surface of the aerosol-generating product, heat concentration may occur at the contact position, causing the aerosol-generating product to be over-baked, and then burnt, or even smoke, thereby seriously affecting the user's smoking experience.

[0062] Based on this, see Figure 1 As shown, at least a portion of the inner wall of the second tube segment 12 is recessed along its radially outer side to form a recessed portion 121. The inner wall of the recessed portion 121 is spaced apart from the outer peripheral wall of the aerosol-generating article 3. It is understood that by spacing the inner wall of the recessed portion 121 apart from the outer peripheral wall of the aerosol-generating article 3, the heat transfer path from the second tube segment 12 to the aerosol-generating article 3 can be extended, thereby preventing heat concentration or overheating in the aerosol-generating article 3 corresponding to the second tube segment 12, thereby preventing the aerosol-generating article 3 from burning. This ensures a pleasant mouthfeel and enhances the user's puffing experience.

[0063] In addition, the cavity structure within the recessed portion 121 can act as a heat insulator, effectively preventing the aerosol generating product 3 corresponding to the recessed portion 121 from heating up too quickly, and slowing down the temperature rise rate of this part of the aerosol generating product 3, so that this part of the aerosol generating product 3 can slowly release the aerosol, making the taste of the entire cigarette consistent.

[0064] In one embodiment of the present application, the support tube 1 may be a heat-insulating component, so that the heat generated by the heating component 2 can be retained inside the support tube 1 and prevented from being transferred to the housing of the aerosol generating device 100. This can improve the efficient transfer of heat to the aerosol-generating article 3, reduce heat loss, and improve heating efficiency.

[0065] In one embodiment of the present application, the support tube 1 may include a thermal insulation material. A thermal insulation material refers to a material having a thermal conductivity of less than 100 W / mK at 23°C and 50% relative humidity, preferably less than 40 W / mK or less than 10 W / mK. For example, the thermal insulation material may be made of at least one of a PAEK-based material, a PI material, or a PBI material. PAEK-based materials include PEEK, PEKK, PEKEKK, or PEK materials. The thermal insulation material may also include aerogel.

[0066] In some embodiments, the support tube 1 may include a heat storage material, which refers to a material having a high heat capacity. A high heat capacity material may have a specific heat capacity of at least 0.5 J / gK, such as at least 0.7 J / gK, or at least 0.8 J / gK at 25°C and constant pressure. For example, the heat storage material may include, but is not limited to, glass fiber, glass mat, ceramic, silica, alumina, carbon, and minerals, or any combination thereof.

[0067] In one embodiment of the present application, the recessed portion 121 is annular and surrounds the outer periphery of the aerosol-generating article 3. In this way, heat can be evenly transferred to the periphery of the aerosol-generating article 3, further avoiding heat concentration and improving the baking effect of the aerosol-generating article 3.

[0068] In one embodiment of the present application, multiple recessed portions 121 are distributed circumferentially along the inner wall of the second tube segment 12, and the multiple recessed portions 121 surround the aerosol generating product 3. This can extend the heat transfer path from the second tube segment 12 to the aerosol generating product 3, thereby preventing the aerosol generating product 3 corresponding to the second tube segment 12 from local overheating, over-baking, etc.

[0069] In one embodiment of the present application, the support tube 1 may further include a straightened wall 13 connected to the end of the second tube segment 12 distal from the first tube segment 11. The straightened wall 13 may be positioned at the aerosol-generating article 3. In this manner, the straightened wall 13 may serve as a heat transfer component, allowing heat from the support tube 1 to be transferred to the aerosol-generating article 3 via the straightened wall 13. In other words, the straightened wall 13 can provide a targeted heat transfer from the second tube segment 12. This prevents overheating and burning of the aerosol-generating article 3 corresponding to the second tube segment 12, which could affect the user's taste. Furthermore, the straightened wall 13 can transfer heat to the straightened wall 13, which is farther from the heating assembly 2, thereby improving heat utilization.

[0070] In addition, since a longer heat conduction path is required when the heat generated by the heating component 2 is transferred to the aerosol generating product 3 corresponding to the straight wall 13, the temperature of the aerosol generating product 3 at this part rises slowly, resulting in a slow smoke emission speed and a small smoke emission volume of the aerosol generating product 3 at this part, and is not conducive to the full evaporation of the aerosol generating matrix.

[0071] See also Figure 1 As shown, by providing a straight wall 13 at the second tube segment 12, and the straight wall 13 is located away from the heating component 2, the heat at the second tube segment 12 can be directionally conducted to the straight wall 13, and the heat conducted to the straight wall 13 can be transferred to the partial segment of the aerosol generating product 3 corresponding to the straight wall 13.

[0072] In this way, the heat from the second tube segment 12 is concentratedly transferred to the straightened wall 13, rapidly heating the environment surrounding the aerosol-generating product 3. Furthermore, the aerosol-generating matrix in the aerosol-generating product 3 corresponding to the straightened wall 13 can be fully heated. Because the aerosol-generating product 3 corresponding to the straightened wall 13 receives sufficient heat, the aerosol-generating matrix rapidly evaporates, allowing the user to inhale a rich aerosol with a rich flavor during the first few puffs. Furthermore, a portion of the heat required to heat the aerosol-generating product 3 corresponding to the straightened wall 13 is directed from the heat from the second tube segment 12. This fully utilizes the heat generated by the heating component 2, allowing the portion of the aerosol-generating product 3 away from the heating component 2 to be fully heated, thereby improving the heating efficiency of the heating component 2.

[0073] In one embodiment of the present application, at least a portion of the straight wall 13 is in contact with the aerosol-generating article 3, so that heat from the support tube 1 can be transferred to the aerosol-generating article 3 at the straight wall 13. This improves the efficiency of directional heat transfer, allowing heat to be fully transferred to the aerosol-generating article 3 corresponding to the straight wall 13, thereby improving heat utilization and allowing the aerosol-generating article 3 corresponding to the straight wall 13 to be fully baked.

[0074] In one embodiment of the present application, there is a certain gap between the straight wall 13 and the aerosol generating product 3. The size of the gap is small, so that the heat on the straight wall 13 can still be conducted to the aerosol generating product 3. While avoiding overheating and burning of the aerosol generating product 3 corresponding to the second tube segment 12, which affects the user's taste, the heat can also be transferred to the straight wall 13 farther away from the heating component 2, thereby improving the utilization rate of heat.

[0075] In one embodiment of the present application, the straight wall 13 is tubular and surrounds the outer circumference of the aerosol-generating article 3 . The tubular straight wall 13 can transfer heat to the aerosol-generating article 3 in all directions.

[0076] In one embodiment of the present application, the straight walls 13 are a plurality of protrusions distributed along the circumference of the aerosol-generating article 3. Each protrusion may extend from the second tube segment 12 and along the circumference of the second tube segment 12. The plurality of protruding straight walls 13 are disposed around the aerosol-generating article 3 and transfer heat to the aerosol-generating article 3, and may also serve to support the aerosol-generating article 3.

[0077] In one embodiment of the present application, the straight wall 13 can be a single-layer structure. A single-layer straight wall 13 can be understood as a single-layer structure with a solid interior. This simplifies the structure of the straight wall 13 and enables targeted heat transfer to the aerosol-generating article 3. Furthermore, the straight wall 13 can be a plate-like structure. For example, the straight wall 13 can be a flat plate; in another example, the straight wall 13 can be a curved plate. The curved straight wall 13 can match the outer surface of the cylindrical aerosol-generating article 3, and the straight wall 13 can wrap around the outer circumference of the aerosol-generating article 3 using its own curved structure.

[0078] In one embodiment of the present application, the straight wall 13 may have a double-layer structure, comprising an inner layer structure and an outer layer structure stacked on top of each other, with the inner layer structure facing toward the aerosol-generating article 3 and the outer layer structure facing away from the aerosol-generating article 3. In this way, the heat generated by the heating assembly 2 can be transferred to the aerosol-generating article 3 via the inner layer structure of the straight wall, while the outer layer structure of the double-layer structure can insulate the inner layer structure, preventing heat from being transferred to the outer shell 2. This reduces the temperature transferred to the surface of the outer shell 2 and improves the user experience.

[0079] In one embodiment of the present application, the support tube 1 includes an inner tube 14 and an outer tube 15. The outer tube 15 is positioned over the outer tube 14, and a hollow cavity 141 is defined between the outer circumferential wall of the inner tube 14 and the inner circumferential wall of the outer tube 15. Axially, the lower end of the inner tube 14 is sealedly connected to the lower end of the outer tube 15, and the upper end of the inner tube 14 is sealedly connected to the upper end of the outer tube 15, thereby defining a closed hollow cavity 141. A recessed portion 121 is provided on the inner tube 141, recessed toward the interior of the hollow cavity 141.

[0080] In one embodiment of the present application, recesses 121 may also be provided at positions corresponding to the recesses 121 of the outer tube 15 and the inner tube 14 , so that the distance between the outer circumferential wall of the inner tube 14 and the inner circumferential wall of the outer tube 15 is substantially equal.

[0081] In one embodiment of the present application, the outer tube 15 is not provided with a recessed portion 121, so that the distance between the outer circumferential wall of the inner tube 14 and the inner circumferential wall of the outer tube 15 at the recessed portion 121 is smaller than the distance between the outer circumferential wall of the inner tube 14 and the inner circumferential wall of the outer tube 15 at the first tube section 11.

[0082] In one embodiment of the present application, the hollow cavity 141 is a gas cavity. Air has a lower thermal conductivity than solid materials, resulting in a better thermal insulation effect. In another embodiment of the present application, the hollow cavity 141 is a vacuum cavity. A vacuum cavity has a lower thermal conductivity than an air cavity, effectively preventing heat from the inner tube 14 from transferring to the outer tube 15, thereby achieving a better thermal insulation effect.

[0083] In some embodiments, the straight wall 13 may extend from the upper end of the inner tube 14, so that heat from the inner tube 14 can be transferred to the straight wall 13, thereby facilitating heating of the aerosol-generating article 3 located at the second tube segment 12. In some examples, the straight wall 13 is integrally formed with the inner tube 14, that is, the straight wall 13 and the inner tube 14 are a single, integral component, which can simplify the manufacturing process of the support tube 1.

[0084] See also Figure 1 As shown, in one embodiment of the present application, a retaining structure 111 is provided between the first tube segment 11 and the second tube segment 12. The retaining structure 111 abuts against at least one of the aerosol-generating article 3 and the heating assembly 2. The retaining structure 111 protrudes radially inward from the support tube 1 and is located between the aerosol-generating article 3 and the heating assembly 2 along the axis of the support tube 1. This separates the aerosol-generating article 3 and the heating assembly 2, preventing direct contact between the aerosol-generating article 3 and the heating assembly 2, thereby preventing localized overheating of the aerosol-generating article 3.

[0085] For example, when the aerosol generating product 3 is inserted into the support tube 1, the limiting structure 111 can stop the aerosol generating product 3 in the insertion direction to prevent the aerosol generating product 3 from being further inserted; for another example, when the heating component 2 is installed into the support tube 1, the limiting structure 111 can also stop the heating component 2 in the insertion direction.

[0086] In one embodiment of the present application, the limiting structure 111 can be annular, and the limiting structure 111 surrounds the outer periphery of the aerosol generating product 3, so that at least one of the aerosol generating product 3 and the heating component 2 can be stably limited, and the aerosol generating product 3 can be effectively prevented from contacting the heating component 2.

[0087] In one embodiment of the present application, the limiting structures 111 may be a plurality of protrusions distributed along the circumference of the first tube segment 11 or the second tube segment 12. The plurality of protrusions are spaced apart in the circumferential direction of the first tube segment 11 or the second tube segment 12. At least one of the aerosol-generating article 3 and the heating assembly 2 abuts against the plurality of protruding limiting structures 111 distributed along the circumference.

[0088] One embodiment of the present application provides a heating module 10, comprising: a support tube 1 and a heating assembly 2. The support tube 1 is the support tube 1 described above, and the heating assembly 2 is disposed in a first tube section 11 of the support tube.

[0089] In one embodiment of the present application, the support tube 1 may further include a straight wall 13 , wherein the straight wall 13 is connected to the end of the second tube section 12 away from the first tube section 11 , and the straight wall 13 is provided at the aerosol generating article 3 .

[0090] See also Figure 2 As shown, the heating module 10 may further include an auxiliary heating element 4. The auxiliary heating element 4 is disposed on the side of the straight wall 13 facing away from the aerosol-generating product 3. The auxiliary heating element 4 provides auxiliary heating, providing additional heating to the aerosol-generating product 3 at the corresponding portion of the straight wall 13. The auxiliary heating element 4 may be attached to the surface of the straight wall 13 by bonding or snapping.

[0091] In one embodiment of the present application, when the straightened wall 13 is in at least partial contact with the aerosol-generating article 3 , the auxiliary heating element 4 may be set to have a relatively low heating power to meet the need of sufficiently heating the aerosol-generating article 3 corresponding to the straightened wall 13 .

[0092] In one embodiment of the present application, when there is a certain gap between the straight wall 13 and the aerosol-generating product 3, it is necessary to set the auxiliary heating element 4 to have a larger heating power so as to meet the need of fully heating the aerosol-generating product 3 corresponding to the straight wall 13.

[0093] In one embodiment of the present application, the auxiliary heating element 4 may be a resistive heating element, an infrared heating element, or an electromagnetic susceptor heating element. When the auxiliary heating element 4 is a resistive heating element, the auxiliary heating element 4 transfers heat directly to the aerosol-generating article 3 via heat conduction, or transfers heat to the aerosol-generating article 3 via the straightened wall 13. When the auxiliary heating element 4 is an infrared heating element, the auxiliary heating element 4 emits infrared light and then directly heats the aerosol-generating article 3 using the infrared light. When the auxiliary heating element 4 is an electromagnetic susceptor heating element, the auxiliary heating element 4 receives electromagnetic energy from an electromagnetic coil, generates heat, and then transfers the heat directly to the aerosol-generating article 3, or transfers the heat to the aerosol-generating article 3 via the straightened wall 13.

[0094] In some embodiments, the auxiliary heating element 4 can be a heating film structure, and the heating film can cover the surface of the straight wall 13, so as to increase the contact area between the auxiliary heating element 4 and the straight wall 13, so that more heat can be transferred to the straight wall 13.

[0095] See also Figure 3 As shown, in one embodiment of the present application, the heating module 10 may further include a bracket 5 , the bracket 5 is provided with a receiving cavity 51 , the heating component 2 is provided in the receiving cavity 51 , and the bracket 5 is used to support the heating component 2 .

[0096] In some embodiments, see Figure 9 As shown, the bracket 5 may include a first side wall 52 and a second side wall 53 connected to the first side wall 52. The first side wall 52 and the second side wall 53 may surround the outer periphery of the heating component 2, and the first side wall 52 and the second side wall 53 form an angle structure and define an escape space 54. At least one of the leads of the heating component 2 and the leads of the auxiliary heating element 4 is arranged in the escape space 54.

[0097] In one embodiment of the present application, both the first side wall 52 and the second side wall 53 may be planes. Thus, an angled space may be formed between the two planes, and the angled space may serve as a relief space 54 to accommodate at least one of the leads of the heating component 2 and the leads of the auxiliary heating element 4. In this case, the first side wall 52 and the second side wall 53 may serve as protective structures to protect the leads of the heating component 2 or the leads of the auxiliary heating element 4.

[0098] In one embodiment of the present application, both the first side wall 52 and the second side wall 53 may be curved surfaces. In one embodiment of the present application, one of the first side wall 52 and the second side wall 53 is flat, and the other is curved. The curved surface structure can define a larger storage space, providing more room for the installation, position adjustment, and maintenance of the leads of the heating assembly 2 or the leads of the auxiliary heating element 4. Furthermore, the curved surface structure can also match the external structure of the aerosol generating device 100, thereby fully utilizing the internal space of the aerosol generating device 100.

[0099] In one embodiment of the present application, the heating component 2 may be an air heating element or a resistance heating needle.

[0100] Of course, the type of the heating component 2 is not limited thereto. In one embodiment of the present application, the heating component 2 is a light heater. Figure 4 and Figure 5As shown, the heating component 2 may include a light-transmitting cover 21 and a light-emitting element 22. The light-transmitting cover 21 defines the outer surface of the heating component 2. The light-transmitting cover 21 is hollow and has a sealed cavity. The light-emitting element 22 is located in the cavity. The light-emitting element 22 and the light-transmitting cover 21 are non-contact. The light-emitting element 22 is held or welded to the first lead 23 and the second lead 24, and the current is supported and guided by the first lead 23 and the second lead 24. The first lead 23 and the second lead 24 pass through the cavity to the light-transmitting cover 21 and then are connected to the circuit board.

[0101] In one embodiment of the present application, the light-emitting element 22 is an electroluminescent element that emits light when powered by a circuit board. In one embodiment of the present application, the light-emitting element 22 is substantially configured in the form of a solenoid coil, with the diameters of the first lead 23 and the second lead 24 being greater than the diameter of the wire material of the light-emitting element 22. In some specific embodiments, the axis of the solenoid coil-shaped light-emitting element is perpendicular to the longitudinal direction of the aerosol-generating article 3 and / or the support tube 1. In one embodiment of the present application, the solenoid coil-shaped light-emitting element has approximately 3-8 windings and a length of approximately 2 mm to 5 mm. Furthermore, the wire material of the light-emitting element 22 has a diameter of approximately 0.05 mm to 0.4 mm.

[0102] In some embodiments, as Figure 4 and Figure 5 As shown, the axis of the solenoid coil can be perpendicular to or parallel to the axis of the support tube 1 .

[0103] In one embodiment of the present application, Figure 5 As described above, the distance between the light emitting element 22 and the side of the light-transmitting cover 21 facing the aerosol generating article 3 is L1, and L1 can be 0.5mm-2.0mm. Further, L1 can be 1mm-5mm. In one embodiment of the present application, Figure 5 As mentioned above, the distance between the light emitting element 22 and the side of the light-transmitting cover 21 facing away from the aerosol generating article 3 is L2, and L2 may be 2 mm to 5 mm. Further, L2 may be 3 mm to 8 mm.

[0104] In one embodiment of the present application, the conductor material of the light-emitting element 22 may include tungsten filament, carbon fiber filament, or tin oxide filament. Alternatively, in other variations, the conductor material of the light-emitting element 22 may be composed of an oxide of at least one metal element, such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, or Zn. Alternatively, in other variations, the conductor material of the light-emitting element 22 may include a luminescent metal or alloy, such as an Fe-Mn-Cu alloy. In one specific embodiment, the light-emitting element 22 is a tungsten filament; alternatively, the light-emitting element 22 is composed of a tungsten filament with a purity of 99% or greater.

[0105] In one embodiment of the present application, the first lead 23 and the second lead 24 may be made of silver, copper, gold, or alloys thereof.

[0106] In one embodiment of the present application, the light shield 21 can be made of a high-temperature-resistant and light-transmitting material such as quartz, glass, ceramic, or mica; preferably, a transparent material. For example, a light shield made of quartz can have a transmittance of over 90% of the light emitted by the light-emitting element; in a more preferred embodiment, a light shield made of high-purity quartz can have a transmittance of over 95% of the light emitted by the light-emitting element. In one embodiment of the present application, the light shield 21 is cylindrical. In another embodiment of the present application, the light shield 21 can also be made of borosilicate.

[0107] In one embodiment of the present application, when the light-emitting element 22 emits light at an operating temperature of 1500°C-2800°C, the light-transmitting cover 21 absorbs or transfers heat from the light-emitting element 22, thereby reaching a temperature of 300°C-600°C. When the light-transmitting cover 21 reaches this temperature, it can also emit infrared light of a longer wavelength to supplement or assist in heating the aerosol-generating article 3. This allows the aerosol-generating substrate of the aerosol-generating article 3 to be simultaneously heated by the light emitted by the heated light-transmitting cover 21, resulting in matched excitation and heating, and staggered excitation by the light emitted by the light-emitting element 22, resulting in a more favorable heating effect.

[0108] In one embodiment of the present application, the heating component 2 is located in the first tube segment 11, and the infrared light generated by the light-emitting element 22 of the heating component 2 can heat the aerosol-generating product 3. The heat on the surface of the transparent cover is transferred to the straight wall 13 through the first tube segment 11 and the second tube segment 12 of the support tube 1.

[0109] In one embodiment of the present application, the heating assembly 2 and the aerosol generating article 3 are spaced apart. In one embodiment of the present application, the light-transmitting cover of the heating assembly 2 may include a protrusion, and the aerosol generating article 3 contacts the heating assembly 2 through the protrusion.

[0110] In one embodiment of the present application, the heating assembly 2 may include an air heater configured to heat gas flowing through the air heater, with the heated gas thereby heating the aerosol-generating article 3. The air heater includes an air guide element and a heating element. The air guide element is configured to provide air flow, and the heating element is configured to heat the air guide element. Alternatively, the air guide element may self-heat under the action of the heating element, thereby heating the gas flowing through the air guide element.

[0111] In one embodiment of the present application, the air-conducting element is made of graphite, and the air-conducting element has good thermal conductivity, which is beneficial to improving the heating efficiency. In some embodiments, the air-conducting element is made of a graphite alloy, wherein the graphite alloy has good magnetic conductivity and high thermal conductivity. The good magnetic conductivity allows the heating element to adopt an electromagnetic heating method other than the resistive heating method, so that the air-conducting element can also generate heat, increasing the optional heating options. Higher thermal conductivity can effectively reduce the time required for the heating element to heat the air-conducting element to a predetermined temperature, thereby improving the heating efficiency of the air heating element.

[0112] In one embodiment of the present application, the heating component 2 may include a resistive heating needle, which is inserted into the aerosol generating article 3. The resistive heating needle generates heat by resistive heating and transfers the heat to the aerosol generating article 3.

[0113] In one embodiment of the present application, Figure 6 As shown, the heating module 10 may further include a wrapping member 6. The wrapping member 6 is located in the first pipe section 11 and covers the outer periphery of the heating component 2. The wrapping member 6 plays a role in fixing the heating component 2.

[0114] In one embodiment of the present application, a plurality of hollow portions 61 may be provided on the wrapping member 6. The hollow portion 61 may be in the shape of an elongated strip, and the elongated hollow structure extends along the axial direction of the support tube 1. The plurality of hollow portions 61 may be spaced apart along the circumferential direction of the support tube 1. In this case, the wrapping member 6 may be in the form of a frame structure, and the frame structure of the wrapping member 6 is wrapped around the outer periphery of the heating component 2. In one embodiment of the present application, the wrapping member 6 may include a metal, an alloy, or one of other heat-conducting materials, which may improve the thermal conductivity of the wrapping member 6 and make the temperature of the outer surface of the wrapping member 6 closer to the temperature of the outer surface of the heating component 2.

[0115] In one embodiment of the present application, Figure 6 As shown, the heating module 10 can also include a temperature measuring element 7, which is clamped between the outer wall of the wrapping member 6 and the inner wall of the first pipe section 11. The temperature measuring element 7 is used to sense the temperature of the surface of the heating component 2, so as to facilitate the control module to control the temperature of the heating component 2.

[0116] In one embodiment of the present application, the end of the wrapping member 6 facing the second tube section 12 is provided with a flange portion 62. The flange portion 62 is folded inwardly of the wrapping member 6 and abuts against the heating assembly 2, facilitating installation of the heating assembly 2 into the wrapping member 6 from the end of the wrapping member 6 away from the flange portion 62. In one embodiment of the present application, the flange portion 62 is annular and abuts against the heating assembly 2. In one embodiment of the present application, multiple flange portions 62 are distributed along the circumference of the wrapping member 6, and multiple flange portions distributed along the circumference of the wrapping member 6 abut against the heating assembly 2.

[0117] In one embodiment of the present application, Figure 10-11 The heating module 10 may further include a wrapping member 6, which is located between the support tube 1 and the heating assembly 2 and is used to position the heating assembly 2. Figure 13 As shown, the wrapping member 6 can be made of a heat-conducting structure, so that the temperature of the heating component 2 can be quickly conducted out to improve the heat conduction efficiency of the heating module 10.

[0118] See also Figure 10 and Figure 11 As shown, in one embodiment of the present application, there are two wrapping members 6, and the heating component 2 is located between the two wrapping members 6 to prevent the heating component 2 from sliding off the wrapping members 6. The two wrapping members 6 are assembled to form a columnar structure, which can clamp the heating component 2 to achieve the purpose of fixing the heating component 2.

[0119] Combine Figure 11 As shown, in one embodiment of the present application, the wrapping member 6 may include a first positioning portion 63 and a second positioning portion 64. The heating assembly 2 is located between the first positioning portion 63 and the second positioning portion 64. The first positioning portion 63 and the second positioning portion 64 are distributed along the axial direction of the heating module 10. In this way, the heating assembly 2 can be positioned in the axial direction and confined between the first positioning portion 63 and the second positioning portion 64.

[0120] For example, see Figure 11 As shown, a first positioning portion 63 may be provided at an end of the wrapping member 6 facing the aerosol-generating article 3 to limit the end of the heating assembly 2 facing the aerosol-generating article 3 and prevent the heating assembly 2 from moving toward the aerosol-generating article 3. A second positioning portion 64 may be provided at an end of the wrapping member 6 facing away from the aerosol-generating article 3 to limit the end of the heating assembly 2 facing away from the aerosol-generating article 3. At least one of the first positioning portion 63 and the second positioning portion 64 may be formed by bending a portion of the wrapping member 6.

[0121] In one embodiment of the present application, the wrapping member 6 may further include a positioning foot 65. The bracket 5 may include a positioning groove. The positioning groove is located radially outside the support tube 1, and the positioning foot 65 on the wrapping member 6 can be inserted into the positioning groove, so that the wrapping member 6 is installed on the bracket 5, the support tube 1 is located between the bracket 5 and the wrapping member 6, and the end of the support tube 1 abuts against the positioning foot 65, that is, the positioning foot 65 passes over or through the support tube 1 and cooperates with the positioning groove on the bracket 5, so that the wrapping member 6 has a positioning effect on the support tube 1 in the axial direction of the heating module 10.

[0122] In one embodiment of the present application, Figure 12-13 As shown, the wrapping member 6 may include a positioning foot 65. The support tube 1 includes a mounting groove. The positioning foot 65 of the wrapping member 6 extends into the mounting groove of the support tube 1, so that the wrapping member 6 is positioned on the support tube in the axial direction of the heating module 10.

[0123] like Figure 7-Figure 8 As shown, one embodiment of the present application provides an aerosol generating device 100, comprising a housing 20 and a heating module 10. The housing 20 defines a mounting cavity 201 and an insertion port 202 for inserting an aerosol generating article 3. The heating module 10 is the heating module 10 described above, and the second tube section 12 of the heating module 10 is in communication with the insertion port 202.

[0124] In one embodiment of the present application, the aerosol generating device 100 may further include a battery cell and a circuit board, wherein the battery cell provides electrical energy to the heating component 2, the circuit board is connected to the battery cell, and the circuit board is provided with a control circuit for controlling the heating of the aerosol generating product 3.

[0125] In one embodiment of the present application, the aerosol-generating article 3 has an overall appearance of an elongated cylindrical structure, for example, it is configured to be similar to a cylindrical shape of a cigarette. Alternatively, in some other variations, the aerosol-generating article 3 may be in the shape of an elongated elliptical cylinder, a square cylinder, a polygonal cylinder, etc. In some embodiments, the appearance of the aerosol-generating article 3 may imitate the appearance of a conventional ignitable and inhalable cigarette. The aerosol-generating article 3 may have an outer diameter between approximately 5 mm and 12 mm (for example, between approximately 5 mm and 10 mm). And the aerosol-generating article 3 has a total length between approximately 40 mm and 100 mm. In an optional embodiment, the aerosol-generating article 3 has a total length of approximately 45 mm to 55 mm.

[0126] In one embodiment of the present application, the aerosol-generating article 3 includes an aerosol-generating substrate; an aerosol-generating substrate is used to describe a substrate that releases volatile compounds upon heating, which volatile compounds can form an aerosol. Aerosols as described herein can be visible or invisible and can include vapors (e.g., fine particles of a substance in a gaseous state that is typically liquid or solid at room temperature) as well as droplets of gas and condensed vapor. The aerosol-generating substrate can include, for example, one or more of a powder, granules, pellets, shreds, strands, ribbons, or flakes comprising one or more of dried flowers or fragrant leaves, grass leaves, tobacco leaves, tobacco main veins, expanded tobacco, and homogenized tobacco.

[0127] In one embodiment of the present application, the aerosol-generating article 3 may further include a filter mouthpiece for filtering and discharging the aerosol; the filter mouthpiece may typically be made of a porous material such as cellulose acetate. In some embodiments, when the aerosol-generating article 3 is heated within the heating module 10, the filter mouthpiece is exposed outside the heating module 10, thereby facilitating inhalation by the user.

[0128] It should be noted that the specification and drawings of this application provide preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Furthermore, it is possible for a person skilled in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A support tube, characterized in that: The invention comprises a first tube segment and a second tube segment connected to each other in the axial direction, wherein the first tube segment is used to accommodate a heating component, and the second tube segment is used to accommodate at least a portion of an aerosol generating product. At least a portion of the inner wall of the second tube segment is recessed along its radial outer side to form a recessed portion, and the inner wall of the recessed portion is spaced apart from the outer peripheral wall of the aerosol generating product.

2. The support tube according to claim 1, characterized in that The recessed portion is annular and surrounds the outer circumference of the aerosol generating article.

3. The support tube according to claim 1, characterized in that The support tube further comprises a straight wall connected to an end of the second tube segment remote from the first tube segment, and the straight wall is provided at the aerosol generating article.

4. The support tube according to claim 3, characterized in that The straight wall is tubular and surrounds the outer circumference of the aerosol generating article.

5. The support tube according to claim 3, characterized in that: The straight wall is a single-layer structure.

6. The support tube according to any one of claims 1 to 5, characterized in that: The support tube includes an inner tube and an outer tube. The outer tube is placed outside the inner tube. A hollow cavity is defined between the outer circumferential wall of the inner tube and the inner circumferential wall of the outer tube. The recess is provided on the inner tube.

7. The support tube according to any one of claims 1 to 5, characterized in that: A limiting structure is provided between the first tube segment and the second tube segment, and the limiting structure abuts against at least one of the aerosol generating article and the heating assembly.

8. A heating module, characterized in that: include: A support tube, wherein the support tube is the support tube according to any one of claims 1 to 7; and A heating component is arranged in the first pipe section of the support pipe.

9. The heating module according to claim 8, characterized in that: The support tube further includes a straight wall connected to an end of the second tube segment away from the first tube segment, the straight wall being disposed at the aerosol generating article; The heating module further comprises an auxiliary heating element, which is arranged on a side of the straight wall facing away from the aerosol generating product.

10. The heating module according to claim 9, characterized in that: The auxiliary heating element is a resistance heating element, an infrared heating element or an electromagnetic susceptor heating element.

11. The heating module according to claim 9, characterized in that: The device further comprises a bracket, wherein the bracket is provided with a receiving cavity, the heating component is arranged in the receiving cavity, and the bracket is used to support the heating component; The bracket includes a first side wall and a second side wall connected to the first side wall, wherein the first side wall and the second side wall form an angle structure and define an escape space. At least one of the leads of the heating assembly and the leads of the auxiliary heating element is arranged in the avoidance space.

12. The heating module according to claim 11, characterized in that: It also includes a wrapping piece, wherein the wrapping piece is provided with positioning feet, The bracket is provided with a positioning groove, which is located radially outside the support tube. The positioning foot passes over the end of the support tube or the positioning foot passes through the end of the support tube to be inserted into the positioning groove, and the end of the support tube abuts against the positioning foot.

13. The heating module according to claim 8, characterized in that: The heating component is a light heater, an air heater, or a resistance heating needle.

14. The heating module according to claim 8, characterized in that: It also includes a wrapping member, which is located in the first pipe section and covers the outer periphery of the heating component.

15. The heating module according to claim 14, characterized in that: The wrapping piece is provided with a plurality of hollow portions.

16. The heating module according to claim 14, characterized in that: The wrapping member is provided with a flange portion at one end facing the second pipe section, and the flange portion abuts against the heating component.

17. The heating module according to claim 14, characterized in that: The wrapping member includes a first positioning portion and a second positioning portion, the first positioning portion and the second positioning portion are distributed along the axial direction of the heating module, and the heating component is located between the first positioning portion and the second positioning portion.

18. The heating module according to claim 14, characterized in that: It also includes a temperature measuring element, which is sandwiched between the outer peripheral wall of the wrapping piece and the inner peripheral wall of the first pipe section.

19. An aerosol generating device, characterized in that: include: a housing having a mounting cavity therein and an insertion opening provided on the housing for inserting the aerosol generating article; A heating module, wherein the heating module is the heating module according to any one of claims 8 to 16, and the second pipe section of the heating module is connected to the insertion port.

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