Aerosol generating device, heating structure and heating element

Abstract

The utility model relates to an aerosol generating device, a heating structure and a heating element, the heating element comprises a heating part for radiating infrared light waves, the inner side of the heating part is hollow, and the heating part is provided with a first end part and a second end part which are oppositely arranged; the heating part comprises a first conductive connecting part and a second conductive connecting part; the first conductive connecting part is located at the first end part; the second conductive connecting part is located at the second end part; the supporting body is at least partially arranged in the heating part in a penetrating manner and extends from the first end part to the second end part, the supporting body is at least partially connected with the first conductive connecting part, the heating element adopts a hollow heating part capable of radiating infrared light waves, and a part of the supporting body is arranged in the heating part in a penetrating manner and extends from the first end part to the second end part; and at least part of the supporting body is connected with the heating part, so that the appearance integrity of the heating element is kept, the consistency of the batch production size of the heating element is improved, and the deformation of the heating element in the heating process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of atomization, in particular to an aerosol generating device, a heating structure and a heating element. Background Art

[0002] In the aerosol generating device in the related art, the heating element is usually formed by integrally winding a longitudinal heating wire. The heating element formed by integral winding, on the one hand, is difficult to control the consistency of processing dimensions, and on the other hand, the heating element after winding is easy to deform at high temperature, which will easily cause uneven temperature field on the surface of the heating element, thereby affecting the heating effect and the consistency of the smoking taste. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved heating element, and further provide an improved aerosol generating device and heating structure.

[0004] The technical solution adopted by the utility model to solve the technical problem is: construct a heating part for radiating infrared light waves, which is hollow inside and has a first end and a second end that are oppositely arranged; the heating part includes a first conductive connecting part and a second conductive connecting part; the first conductive connecting part is located at the first end; the second conductive connecting part is located at the second end;

[0005] The support body is at least partially disposed in the heat generating portion and extends from the first end portion to the second end portion, and at least a portion of the support body is connected to the heat generating portion.

[0006] In some embodiments, the heating portion is in a cylindrical shape, and the side wall of the heating portion is at least partially hollowed out; or, the heating portion is in a spiral column shape.

[0007] In some embodiments, the heating portion includes at least two heating segments, and at least two of the heating segments are connected.

[0008] In some embodiments, at least two of the heating segments are connected to form a spiral structure;

[0009] Alternatively, at least two of the heating segments are coaxially arranged and a connecting segment is arranged between two adjacent heating segments, and the connecting segment is arranged at a set angle with each of the heating segments.

[0010] In some embodiments, the heating element further includes a first conductive portion and a second conductive portion;

[0011] The first conductive part is connected to the second conductive connection part; the support body is a conductive column, one end of which is electrically connected to the first conductive connection part, and the other end of which passes through the second end to form the second conductive part;

[0012] Alternatively, the heating portion forms a first heating portion; the first conductive portion is connected to the second conductive connection portion; the supporting body is a heating body, forming a second heating portion and one end of which passes through the second end portion, and the end of the heating body passing through the second end portion is provided with a third conductive connection portion, and the other end of the supporting body is at least partially electrically connected to the first conductive connection portion, and the second conductive portion is connected to the third conductive connection portion.

[0013] In some embodiments, a distance from the third conductive connection portion to the first end portion is greater than a distance from the second conductive connection portion to the first end portion.

[0014] The utility model also constructs a heating structure, including the heating element of the utility model and a tube body for light waves to pass through, the tube body is sleeved on at least part of the outer circumference of the heating element, and at least part of the heating part of the heating element is spaced from the inner wall of the tube body.

[0015] In some embodiments, the tube body includes an opening and a pointed top that are arranged opposite to each other, and one end of the support body is in contact with the pointed top to limit the heating portion.

[0016] In some embodiments, the support body passes through the first end portion, and a portion of the support body passing through the first end portion forms a positioning portion of the heating element.

[0017] In some embodiments, a limiting structure for installing the heating element is provided on the positioning portion.

[0018] In some embodiments, a fixing member is further included, wherein the fixing member is at least partially installed in the tube body and is used to position the heating element in the tube body.

[0019] In some embodiments, it further includes a temperature measuring structure, wherein the temperature measuring structure is at least partially installed in the tube body, and the temperature measuring structure further includes a temperature measuring portion;

[0020] The fixing member is provided with a positioning structure, and the temperature measuring part is installed on the positioning structure.

[0021] In some embodiments, an isolation structure is provided on the fixing member, the temperature measuring part is provided on a side of the isolation structure opposite to the heating element, and the temperature measuring part is isolated from the heating part by the isolation structure.

[0022] The utility model also constructs an aerosol generating device, which comprises the heating structure of the utility model and a power supply component electrically connected to the heating structure.

[0023] The implementation of the aerosol generating device, heating structure and heating element of the utility model has the following beneficial effects: the heating element adopts a heating part that is hollow and can radiate infrared light waves, and the support body is partially inserted into the heating part, extending from the first end to the second end, and at least partially connected to the heating part, thereby maintaining the shape integrity of the heating element, improving the dimensional consistency of the heating element during mass production, reducing the internal stress of the heating element after molding, and reducing deformation during heating, thereby improving the temperature stability of the heating element and the uniformity of the axial temperature of the heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 It is a schematic diagram of the heating structure of the aerosol generating device in the first embodiment of the utility model;

[0026] Figure 2 yes Figure 1 A cross-sectional view of the heat generating structure shown;

[0027] Figure 3 yes Figure 2 A schematic diagram of the structural decomposition of the heat generating structure shown;

[0028] Figure 4 yes Figure 3 A schematic diagram of the structure of the heating part of the heating element in the heating structure shown;

[0029] Figure 5 It is a schematic diagram of the structure of the heating element of the aerosol generating device in the second embodiment of the utility model;

[0030] Figure 6 It is a schematic structural diagram of the heating part of the heating element in the aerosol generating device in the third embodiment of the utility model;

[0031] Figure 7 is a cross-sectional view of a heating structure in an aerosol generating device in a fourth embodiment of the present utility model;

[0032] Figure 8 yes Figure 7 A schematic diagram of the structure of the insulating tube in the heating structure shown;

[0033] Fig. 9 Schematic diagram of the heating structure of the aerosol generating device in the fifth embodiment of the utility model;

[0034] Fig.10 yes Fig. 9 A cross-sectional view of the heat generating structure shown;

[0035] Fig.11 yes Fig.10A schematic diagram of the structural decomposition of the heat generating structure shown;

[0036] Fig.12 yes Fig.11 A schematic diagram of the structure of the heating element in the heating structure shown;

[0037] Fig.13 2 is a schematic diagram of the structure of a heating element of an aerosol generating device in a sixth embodiment of the present utility model;

[0038] Fig.14 is a cross-sectional view of a heating structure in an aerosol generating device in a seventh embodiment of the present utility model;

[0039] Fig.15 yes Fig.14 A schematic diagram of the structure of the heating element in the heating structure shown;

[0040] Fig.16 2 is a schematic diagram of the structure of a heating element of an aerosol generating device in the eighth embodiment of the present utility model;

[0041] Fig.17 2 is a schematic diagram of the structure of a heating element of an aerosol generating device in a ninth embodiment of the present utility model;

[0042] Fig.18 Schematic diagram of the heating element structure of the aerosol generating device in the tenth embodiment of the utility model;

[0043] Fig.19 It is a partial structural schematic diagram of the heating structure of the aerosol generating device in the eleventh embodiment of the utility model;

[0044] Fig. 20 yes Fig.19 A schematic diagram of the structure of the fixing parts of the heating structure and the temperature measuring structure shown. DETAILED DESCRIPTION

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in specific directions, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0046] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0047] Figure 1 The first embodiment of the aerosol generating device of the utility model is shown. The aerosol generating device can heat the aerosol generating substrate by heating without burning. In some embodiments, the aerosol generating substrate can be columnar, and can be a solid material in the form of strips, particles, sheets or one-piece molding made of leaves and / or stems of plants (such as tobacco), and aroma components can be further added to the solid material. The aerosol generating device may include a heating structure 1 and a power supply component (not shown). The heating structure 1 can be at least partially inserted into the aerosol generating substrate and heat the aerosol generating substrate by radiating infrared light, so that the aerosol generating substrate generates an aerosol for the user to inhale. The power supply component (not shown) is connected to the heating structure 1 to supply power to the heating structure 1.

[0048] like Figures 1 to 3As shown, in this embodiment, the heating structure 1 includes a tube body 10, a heating element 20, and a fixing member 30. The tube body 10 is permeable to infrared light waves, and one end of the tube body 10 has an opening 12, which can be sleeved on the outer periphery of at least part of the heating element 20. The heating element 20 is at least partially arranged in the tube body 10, for generating heat and radiating infrared light, which passes through the tube wall of the tube body 10 and enters the aerosol generating matrix. In some embodiments, when the power is on, the heating element 20 can quickly heat up to about 1000°C, radiate infrared light, and the surface temperature of the tube body 10 can be controlled at about 350°C, and the atomization temperature of the aerosol generating matrix is ​​controlled at 300-350°C, so as to realize the precise atomization of the aerosol generating matrix mainly in the 2-4.75um band and the 8-11μm band. The fixing member 30 can be at least partially installed in the tube body 10, and is used to position the heating element 20 in the tube body 10. The fixing member 30 is tightly matched with the heating element 20 and the tube body 10 to fix the heating element 20 in the tube body 10 , thereby achieving the positioning and installation of the heating element 20 and the tube body 10 .

[0049] In this embodiment, the tube body 10 may be a quartz glass tube. Of course, it is understandable that in other embodiments, the tube body 10 is not limited to an infrared-transmitting quartz tube, and may be other window materials that can transmit infrared light waves, such as transparent ceramics, diamond, etc.

[0050] In the present embodiment, the tube body 10 includes a columnar body 10a and a pointed top 10b, and the columnar body 10a can be cylindrical and hollow. It can be understood that in some other embodiments, the columnar body 10a is not limited to being cylindrical, and can be rectangular, flat or other shapes. The pointed top 10b is arranged at one end of the columnar body 10a. By setting the pointed top 10b, it is convenient for at least part of the heating structure 1 to be plugged in and out of the aerosol generating matrix. The pointed top 10b can be a cone or a cambered body. In some embodiments, a cavity 11 is formed inside the tube body 10, and the cavity 11 is a columnar cavity and can be non-sealed. When the heating element 20 is installed therein, the cavity 11 does not need to be evacuated or filled with inert gas. In the present embodiment, the opening 12 is arranged at one end of the columnar body 10a away from the pointed top 10b, and is arranged opposite to the pointed top 10b, and is connected to the cavity 11, for the heating element 20 to be loaded into the cavity 11.

[0051] In this embodiment, the heating element 20 may include a heating portion 20a, a first conductive portion 20b, and a second conductive portion 20c. In this embodiment, at least part of the heating portion 20a is spaced apart from the inner wall of the tube body 10. Specifically, the heating portion 20a may be spaced apart from the inner wall of the tube body 10, which is conducive to rapid heating without burning, and prevents the excessive temperature of the heating portion 20a from adversely affecting the tube body 10. The heating portion 20a may be cylindrical and may emit infrared light waves when powered on. In this embodiment, the heating portion 20a may be formed by a cylindrical heating element 21. The inner side of the heating element 21 is hollow and may be roughly cylindrical. It can be understood that in some other embodiments, the heating element 21 may not be limited to a cylindrical shape, and may be a cylindrical structure with a triangular or square cross section. In some other embodiments, the heating element 21 may also be a heating wire, which is formed into a cylindrical shape by bending or winding the heating wire. By adopting the cylindrical heating portion 20a, the integrity of the shape can be maintained or not easily deformed under high temperature conditions, the consistency of the size of the heating element 20 can be ensured, the deformation of the heating element 20 can be reduced, and the temperature stability of the heating element 20 and the uniformity of the axial temperature of the heating element 20 can be improved. The first conductive portion 20b and the second conductive portion 20c are respectively connected to the two ends of the heating portion 20a, and can extend from the same end, and when the heating element 20 is assembled with the tube body 10, the two can partially extend from the opening 12 of the tube body 10 to connect with the power supply component (not shown).

[0052] It should be noted that, in the present embodiment, the heating element 21 forming the heating portion 20a is a heating element that can radiate infrared light waves, which may include a heating substrate and a heat radiation layer arranged on the heating substrate. The heating substrate can generate heat when powered on, and the heating substrate may be a metal cylinder or a metal wire, and metal materials such as nickel-chromium alloy (such as nickel-chromium alloy wire), iron-chromium-aluminum alloy (such as iron-chromium-aluminum alloy wire) and other metal materials with good high-temperature oxidation resistance, high stability, and not easy to deform can be selected. The heat radiation layer may be an infrared layer. The infrared layer may be formed on the heating substrate under high-temperature heat treatment by an infrared layer forming substrate, and may radiate infrared light, wherein the infrared layer forming substrate may be silicon carbide, spinel or a composite substrate thereof. It can be understood that in some other embodiments, the heat radiation layer is not limited to an infrared layer. In some other embodiments, the heat radiation layer may be a composite infrared layer.

[0053] In this embodiment, the heating portion 20a has a first end 21a and a second end 21b which are arranged opposite to each other, wherein the first end 21a can be arranged toward the pointed portion 10b, and the second end 21b can be arranged toward the opening 12 and can be connected to the first conductive portion 20b, and the first end 21a and the second end 21b are respectively the two ends of the cylindrical heating element 21. In some embodiments, the second end 21b is an open structure. Figure 4As shown, the heating part 20a also includes a first conductive connection part 21c and a second conductive connection part 21d, wherein the first conductive connection part 21c is located at the first end 21a; the second conductive connection part 21d is located at the second end 21d. The second conductive connection part 21d can be the end surface of the second end 21b. The cylindrical heating part 20a has better thermal uniformity, is conducive to industrial production, and has better product consistency.

[0054] like Figure 4 As shown, in this embodiment, the side wall of the heating portion 20a is at least partially hollowed out and formed by hollowing out. In this embodiment, the side wall of the heating portion 20a can be hollowed out to form at least two heating segments 211 and at least one connecting segment 212. The heating segment 211 can be multiple (greater than two), and multiple heating segments 211 can be coaxially arranged. In some other embodiments, the heating segment 211 can be two. In this embodiment, the heating segment 211 can be roughly annular, specifically, the heating segment 211 can be roughly annular, and the diameter of each heating segment 211 is equivalent to the diameter of another heating segment 211. Two adjacent heating segments 211 can be connected by setting a connecting segment 212. The connecting segment 212 can be set in length, and its two ends can be connected to the two adjacent heating segments 211 respectively. And the connecting segment 212 can be set at a set angle with each heating segment 211, specifically, each connecting segment 212 and the heating segment 211 can be set at a right angle. In some other embodiments, the number of the connecting section 212 between two adjacent heating sections 211 is not limited to one, and the connecting section 212 is not limited to being arranged at a right angle to the heating section 211, but may also be arranged at an oblique angle. In some other embodiments, the connecting section 212 may be omitted. One end of two adjacent heating sections 211 that are arranged opposite to each other may be connected, and at least two heating sections 211 may be connected to form a spiral structure.

[0055] In this embodiment, a through hole 213 is provided on the first end 21a of the heating portion 20a, and the through hole 213 may be located at the central axis of the heating portion 20a. In some embodiments, the through hole 213 may be a circular through hole. The first conductive connecting portion 21c may be an inner side wall of the through hole 213.

[0056] For example Figure 2 and Figure 3 As shown, in this embodiment, the heating element 20 may include a support 22, and the support 22 may be a conductive column, which may form a second conductive portion 20c. Of course, in some other embodiments, the support 22 may also form the heating portion 20a together with the heating portion 20a. In this embodiment, the support 22 may be cylindrical, and of course, it can be understood that in some other embodiments, the support 22 may not be limited to a cylindrical shape. In some other embodiments, the support 22 may also be an insulator.

[0057] In the present embodiment, the support body 22 can be arranged on the heating part 20a, coaxially arranged with the heating part 20a, can extend from the first end 21a to the second end 21b, and at least partially connected to the heating part 20a. Specifically, in the present embodiment, one end of the support body 22 is connected to the first conductive connection part 21c of the first end 21a, and then conductively connected to the heating part 20a, and the other end is passed through the second end 21b to form the second conductive part 20c. In some embodiments, the connection can be a direct connection, such as welding or direct contact, and in some other embodiments, the connection can also be an indirect connection, such as by setting a connection structure. In some other embodiments, when the support body 22 is an insulator, the support body 22 is not limited to being connected to the first conductive connection part 21c, and the first conductive connection part 21c can be connected to a conductive member. Specifically, the support body 22 can partially pass through the through hole 213, which is connected to the first conductive connection part 21c, thereby forming an electrical connection. In some embodiments, the support body 22 can be fixed to the heating portion 20a by welding or high-temperature conductive paste, thereby improving the reliability of the connection between the support body 22 and the heating portion 20a. In this embodiment, one end of the support body 22 is in contact with the pointed portion 10b. Specifically, the portion of the support body 22 that passes through the through hole 213 forms a positioning portion that can be inserted into the pointed portion 10b of the tube body 10, so that the heating element 20 can be located on the central axis of the tube body 10, thereby positioning the entire heating element 20 to ensure centering.

[0058] The process of forming the heating element 20 may be to first hollow out the cylindrical heating element 21 to form a plurality of coaxially arranged and mutually connected heating segments 211, then open a through hole 213 at the first end 21a of the heating element 21, pass the support body 22 from the second end 21b to the first end 21a, and pass it out of the through hole 213, and use welding to connect and fix the support body 22 to the inner wall of the through hole 213 to form an electrical connection. Then, weld the first conductive portion 20b at the second conductive connecting portion 21d.

[0059] In this embodiment, the fixing member 30 can be partially inserted into the tube body 10 from the opening 12 of the tube body 10, and part of it can be inserted into the fixing member 30 from the second end 21b of the heating portion 20a. The fixing member 30, the tube body 10 and the heating portion 20a can be coaxially arranged, thereby ensuring the coaxiality between the tube body 10 and the heating portion 20a, thereby ensuring the axial temperature field uniformity of the heating element 20. In this embodiment, the fixing member 30 can be tubular and an insulating member.

[0060] In the present embodiment, the fixing member 30 may include a first fixing portion 31 and a second fixing portion 32, the first fixing portion 31 and the second fixing portion 32 are coaxially arranged, the first fixing portion 31 may be in the shape of a circular tube, the outer diameter of which may be adapted to the inner diameter of the tube body 10, and thus may be interference fit with the tube body 10. The second fixing portion 32 is arranged at one end of the first fixing portion 31, and the length thereof is less than the length of the first fixing portion 31. The second fixing portion 32 may be in the shape of a circular tube, the diameter of which is less than the diameter of the first fixing portion 31, and is adapted to the inner diameter of the heating portion 20a, and may be interference fit with the heating portion 20a. In some embodiments, the second fixing portion 32 may be integrally formed with the first fixing portion 31, and specifically the two may be integrally formed by injection molding.

[0061] In this embodiment, a first lead hole 311 may be formed on the side wall of the first fixing portion 31 . The first lead hole 311 may extend along the axis of the first fixing portion 31 and may be used to lead out the first conductive portion 20 b .

[0062] In this embodiment, a second lead hole 33 is opened at the central axis of the fixing member 30. The second lead hole 33 can pass through the first fixing portion 31 to the second fixing portion 32, and can be used for the second conductive portion 20c (the support body 22 in this embodiment) to pass through.

[0063] Figure 5 The second embodiment of the aerosol generating device of the utility model is shown. The difference between the second embodiment and the first embodiment is that the support body 22 is not limited to forming the second conductive part 20c. The support body 22 and the second conductive part 20c are separate structures. The support body 22 can be a high-resistivity heating body, which can form a second heating part to increase the temperature of the high-temperature section and improve the heating speed. The second conductive part 20c can be connected to one end of the support body 22, and it can be welded and fixed to the support body 22. The second conductive part 20c can be a low-resistivity electrode lead.

[0064] Figure 6 The third embodiment of the aerosol generating device of the utility model is shown, which differs from the first embodiment in that the heating portion 20a can be formed into a spiral structure through zigzag hollowing processing, and at least two heating segments 211 are connected to form a spiral structure, so that it can be suitable for the heating portion 20a with a larger resistance value and can improve the uniformity of the axial temperature field of the heating element 20.

[0065] Figure 7 and Figure 8The fourth embodiment of the aerosol generating device of the utility model is shown, which is different from the first embodiment in that the fixing member 30 further includes a third positioning portion 34, which can be connected to the end of the second positioning portion 32 away from the first positioning portion 31, and its length can be greater than the length of the second positioning portion 32. The third positioning portion 34 can be tubular, and the second lead hole can extend to the third positioning portion 34. The outer side wall of the third positioning portion 34 can be provided with at least one rib 341, specifically, the rib 341 can be multiple, each rib 341 can extend along the axial direction of the third positioning portion 34, and the multiple ribs 341 can be arranged at intervals along the circumference of the third positioning portion 34. By providing the multiple ribs 341, the contact area between the fixing member 30 and the heating portion 20a can be reduced, and the heating portion 20a with a smaller thickness and more heating segments 211 can be supported to prevent the heating portion 20a from being deformed.

[0066] Figures 9 to 12 The fifth embodiment of the aerosol generating device of the utility model is shown, which differs from the first embodiment in that the heating element 21 can be a longitudinal heating wire, which can be wound to form a spiral columnar heating portion 20a, that is, a first heating portion, and the first conductive connecting portion 21c and the second conductive connecting portion 21d are the end faces at both ends of the heating element 21.

[0067] The support body 22 can be a columnar heating element, which can form a second heating portion. One end of the support body 22 can pass through the first end 21a, and the other end can pass through the second end 21b. The end passing through the second end 21b can be provided with a third conductive connection portion 22a, and the other end of the support body 22 is at least partially electrically connected to the first conductive connection portion 21c. The second conductive portion 20c can be connected through the third conductive connection portion 22a. Specifically, the third conductive connection portion 22a can be the end surface of the support body 22 passing through one end of the second end 21b, and it can be fixed to the second conductive portion 20c by welding. In this embodiment, the distance from the third conductive connection portion 22a to the first end 21a is greater than the distance from the second conductive connection portion 21d to the first end 21a.

[0068] The molding process of the heating element 20 can be as follows: the longitudinal heating element 21 is wound to form a hollow spiral column with two ends penetrated, the support body 22 is passed from the second end 21b to the first end 21a and out of the first end 21a, and the first conductive connection part 21c of the heating element 21 located at the first end 21a is connected to the side wall of the support body 22 by welding. The first conductive part 20b is connected by welding at the second conductive connection part 21d, and the second conductive part 20c is connected by welding at the third concave point connection part 22a of the support body 22.

[0069] In this embodiment, the second fixing portion 32 on the fixing member 30 can be omitted. A positioning structure 35 can be provided on the fixing member 30, and the positioning structure 35 can be used for positioning and installing the temperature measuring structure.

[0070] Fig.13 The sixth embodiment of the aerosol generating device of the utility model is shown, which is different from the fifth embodiment in that the second conductive connecting portion 21d is connected to the first conductive portion 20b by providing a first connecting structure 23. The first connecting structure 23 may be a pad. The third conductive connecting portion 22a and the second conductive portion 20c may be connected by providing a second connecting structure 24. The second connecting structure 24 may be a pad. In some other embodiments, the first connecting structure 23 and the second connecting structure 24 may not be limited to pads, but may also be a card structure or other.

[0071] Fig.14 and Fig.15 The seventh embodiment of the aerosol generating device of the utility model is shown, which is different from the fifth embodiment in that the support body 22 can be arranged flush with the first end 21a or slightly protrudes from the first end 21a.

[0072] Fig.16 The eighth embodiment of the aerosol generating device of the utility model is shown. The difference between the eighth embodiment and the fifth embodiment is that the end of the positioning portion formed by the part of the support body 22 that passes through the first end 21a is provided with a limiting structure 25. The limiting structure 25 can limit or reduce the partial extension of the entire heating element 20 and cause the central axis of the tube body 10 to deviate when the heating part 20a is heated. In this embodiment, the limiting structure 25 can be an elastic member or shape memory alloy that is deformed by heat, and can be spherical or cylindrical. The limiting structure 25 can be deformed when heated, so that a buffer space is formed between the positioning portion and the pointed top 10b, which can facilitate the provision of extension space for the heating element 20 and avoid partial bending and deviation of the heating element 20 when heated. In some other embodiments, the limiting structure 25 is not limited to an elastic member that is deformed by heat. In some other embodiments, the limiting structure 25 can be a structure that can be vaporized by heat.

[0073] Fig.17 The ninth embodiment of the aerosol generating device of the utility model is shown, which is different from the eighth embodiment in that the limiting structure 25 can be sleeved on the positioning portion.

[0074] Fig.18 The tenth embodiment of the aerosol generating device of the utility model is shown, which differs from the eighth embodiment in that the limiting structure 25 can be a groove opened on the side wall of the positioning part, so that the local strength of the positioning part becomes weak after being heated.

[0075] Figures 19 to 20The eleventh embodiment of the aerosol generating device of the utility model is shown, which is different from the fifth embodiment in that it also includes a temperature measuring structure 40. The temperature measuring structure 40 may include a temperature measuring portion 41, a first electrical connection structure 42 and a second electrical connection structure 43, and the first electrical connection structure 42 and the second electrical connection structure 43 are both connected to the temperature measuring portion 41 and extend in the same direction.

[0076] The second fixing portion 32 in the fixing member 30 can be omitted. A lead groove 312 is provided on the side wall of the first fixing portion 31, and the lead groove 312 can extend along the axial direction of the fixing member 30. The temperature measuring structure 40 can be installed on the fixing member 30, and the first electrical connection structure 42 and the second electrical connection structure 43 can be led out from the lead groove 312.

[0077] A positioning structure 35 protruding from the fixing member 30 to one end of the tube body 10 may be provided in the lead groove 312, and the positioning structure 35 may be used for positioning and installing the temperature measuring part 41. Specifically, the temperature measuring part 41 may be installed on the positioning structure 35 and located on the side of the positioning structure 35 facing the tube wall of the tube body 10. In some embodiments, the positioning structure 35 may include a first part 35a and a second part 35b, wherein the first part 35a is at least partially located in the lead groove 312 and may be located between the first electrical connection structure 42 and the second electrical connection structure 43, forming a partition structure for separating the first electrical connection structure 42 and the second electrical connection structure 43. The second part 35b is connected to the first part 35a, and the axis is arranged parallel to the first part 35a. The length of the second part 35b extending in the direction away from the first fixing part 31 is greater than the length of the first part 35a extending. The first part 35a may be arranged in a stepped manner, and a limiting step 351 is formed between the two. The temperature measuring part 41 may be located on the limiting step 351.

[0078] In this embodiment, an isolation structure 352 is provided on the fixing member 30, and the isolation structure 352 can be a portion of the second portion 35b protruding from the first portion 35a. The temperature measuring portion 41 is arranged on the side of the isolation structure 352 opposite to the heating element 20, and is isolated from the heating portion 20a by the isolation structure 352.

[0079] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. A heating element, characterized in that: include: The heating portion (20a) radiating infrared light waves is hollow inside and has a first end (21a) and a second end (21b) arranged opposite to each other; the heating portion (20a) comprises a first conductive connecting portion (21c) and a second conductive connecting portion (21d); the first conductive connecting portion (21c) is located at the first end (21a); ​​and the second conductive connecting portion (21d) is located at the second end (21b); The support body (22) is at least partially disposed in the heating portion (20a), extending from the first end portion (21a) to the second end portion (21b), and the support body (22) is at least partially connected to the heating portion (20a).

2. The heating element according to claim 1, characterized in that: The heating portion (20a) is cylindrical, and at least a portion of the side wall of the heating portion (20a) is hollowed out; Alternatively, the heating portion (20a) is in the shape of a spiral column.

3. The heating element according to claim 1, characterized in that: The heating portion (20a) comprises at least two heating sections (211), and at least two of the heating sections (211) are connected.

4. The heating element according to claim 3, characterized in that: At least two of the heating sections (211) are connected to form a spiral structure; Alternatively, at least two of the heating sections (211) are coaxially arranged, and a connecting section (212) is arranged between two adjacent heating sections (211), and the connecting section (212) is arranged at a set angle with each of the heating sections (211).

5. The heating element according to claim 1, characterized in that: The heating element further comprises a first conductive part (20b) and a second conductive part (20c); The first conductive part (20b) is connected to the second conductive connecting part (21d); the support body (22) is a conductive column, one end of which is electrically connected to the first conductive connecting part (21c), and the other end of which passes through the second end (21b) to form the second conductive part (20c); Alternatively, the heating portion (20a) forms a first heating portion; the first conductive portion (20b) is connected to the second conductive connection portion (21d); the support body (22) is a heating body, forming a second heating portion and one end of which passes through the second end portion (21b), and the end of the support body (22) passing through the second end portion (21b) is provided with a third conductive connection portion (22a), and the other end of the support body (22) is at least partially electrically connected to the first conductive connection portion (21c); the second conductive portion (20c) is connected to the third conductive connection portion (22a).

6. The heating element according to claim 5, characterized in that: The distance from the third conductive connection portion to the first end portion (21a) is greater than the distance from the second conductive connection portion (21d) to the first end portion (21a).

7. A heating structure, characterized in that: The invention comprises a heating element (20) as claimed in any one of claims 1 to 6 and a tube body (10) for transmitting light waves, wherein the tube body (10) is sleeved on the outer circumference of at least part of the heating element (20), and at least part of the heating portion (20a) of the heating element (20) is spaced from the inner wall of the tube body (10).

8. The heating structure according to claim 7, characterized in that: The tube body (10) comprises an opening (12) and a pointed top portion (10b) which are arranged opposite to each other, and one end of the support body (22) is in contact with the pointed top portion (10b) for limiting the position of the heating portion (20a).

9. The heating structure according to claim 7, characterized in that: The support body (22) passes through the first end portion (21a), and the portion of the support body (22) passing through the first end portion (21a) forms a positioning portion of the heating element (20).

10. The heating structure according to claim 9, characterized in that: The positioning portion is provided with a limiting structure (25) for installing the heating element (20).

11. The heating structure according to claim 7, characterized in that: It also comprises a fixing member (30), wherein the fixing member (30) is at least partially installed in the tube body (10) and is used to position the heating element (20) in the tube body (10).

12. The heating structure according to claim 11, characterized in that: The heating structure further comprises a temperature measuring structure (40), wherein the temperature measuring structure (40) is at least partially installed in the tube body (10), and the temperature measuring structure (40) further comprises a temperature measuring portion (41); The fixing member (30) is provided with a positioning structure (35), and the temperature measuring part (41) is installed on the positioning structure (35).

13. The heating structure according to claim 12, characterized in that: An isolation structure (352) is provided on the fixing member (30), the temperature measuring portion (41) is provided on a side of the isolation structure (352) opposite to the heating element (20), and the temperature measuring portion (41) is isolated from the heating portion (20a) by the isolation structure (352).

14. An aerosol generating device, characterized in that: It comprises a heating structure (1) as claimed in any one of claims 7 to 13 and a power supply component electrically connected to the heating structure (1).

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