Aerosol generating device and heating structure thereof

Abstract

The utility model discloses an aerosol generating device and a heating structure thereof. The heating structure comprises a pipe body, a heating element and a supporting piece, a tube cavity is formed in the tube body, and infrared light can penetrate through the tube wall of the tube body; the heating element is at least partially arranged in the tube cavity; the supporting piece is at least partially arranged in the pipe cavity and used for supporting the heating element, the supporting piece comprises at least two supporting elements arranged in the axial direction of the pipe body, and the supporting elements are of independent split structures. When the aerosol generating device falls off, the main collision point between the supporting piece and the pipe body moves downwards to the upper end of the supporting element at the lowest section, the swinging displacement of the downwards-moved main collision point in the A-A direction is reduced, the point contact stress acting on the inner wall face of the pipe body is correspondingly reduced, and therefore the risk that the pipe body is damaged when the aerosol generating device falls off is reduced.

Description

Technical Field

[0001] This utility model relates to the field of aerosol generation technology, and in particular to an aerosol generation device and its heating structure. Background Technology

[0002] In related aerosol generating devices, the heating structure typically includes a tube, a heating element housed within the tube, and a support below the heating element to support and secure it. If the aerosol generating device falls to the ground, the tube and / or support may swing, potentially causing the tube to rupture or even break. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an improved aerosol generating device and its heating structure to reduce the risk of damage to the tube body when the aerosol generating device is dropped.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a heating structure is provided, which includes a tube body, a heating element and a support member; a cavity is formed inside the tube body, and the tube wall of the tube body can allow infrared light to pass through; the heating element is at least partially disposed in the cavity; the support member is at least partially disposed in the cavity for supporting the heating element, and the support member includes at least two support elements disposed along the axial direction of the tube body, and each support element is an independent split structure.

[0005] In some embodiments, the tube body includes an open end, the heating structure further includes a fixed flange, and at least two of the supporting elements include a first supporting element, which extends at least partially from the open end of the tube body outside the tube cavity and is fixedly connected to the fixed flange.

[0006] In some embodiments, the fixed flange is provided with a first central through hole, the first central through hole includes a first hole and a second hole that are connected, the lateral dimension of the first hole is larger than the lateral dimension of the second hole, and a limiting step is formed at the junction of the first hole and the second hole.

[0007] The open end of the tube extends into the first hole and abuts against the limiting step, and the portion of the first support element extending out of the tube cavity passes through the second hole.

[0008] In some embodiments, at least two of the support elements further include a second support element, which is located entirely within the lumen, with one end of the second support element in contact with the first support element, and the cross-sectional dimension of the second support element being less than or equal to the cross-sectional dimension of the first support element.

[0009] In some embodiments, at least two of the support elements further include a second support element, one end of which contacts the first support element, and the contact point between the second support element and the first support element is located inside the lumen.

[0010] In some embodiments, each of the support elements is provided with at least one mounting channel, the mounting channel including a through hole and / or groove extending through each of the support elements along the axial direction of the tube body; the heating element includes a heating part and an electrode part connected together, at least the electrode part being embedded in the mounting channel.

[0011] In some embodiments, the through hole includes a second central through hole extending axially through the middle of each of the support elements along the tube body.

[0012] In some embodiments, there is a gap between at least one of the support elements and the inner wall surface of the tube; and / or, at least two of the support elements are coaxially arranged along the axial direction of the tube.

[0013] In some embodiments, each of the support elements is made of one of ceramic, quartz, silicone, or plastic.

[0014] This utility model also provides an aerosol generating device, which includes the heating structure described in any of the above-mentioned embodiments and a power supply component connected to the heating structure.

[0015] This invention has at least the following beneficial effects: Since the support component comprises at least two independent support elements, only the lowest support element forms a cantilever beam structure. The ends of the other upper support elements (excluding the lowest support element) are relatively free, allowing them to swing in sync with the tube body when the aerosol generating device falls, reducing the risk of point contact stress on the inner wall of the tube body. The main collision point between the support component and the tube body is moved downwards to the upper end of the lowest support element. This downward movement reduces the swing displacement of the main collision point along the AA direction, correspondingly reducing the point contact stress acting on the inner wall of the tube body, thereby reducing the risk of tube damage when the aerosol generating device falls. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the following will further describe this utility model in conjunction with the accompanying drawings and embodiments. In the drawings:

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the heating structure in some embodiments of this utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the longitudinal section of the heating structure along a certain direction.

[0019] Figure 3 yes Figure 1 A schematic diagram of the longitudinal section of the heating structure along another direction.

[0020] Figure 4 This is a schematic diagram of the fixed flange in some embodiments of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the heating element and the support member assembled together according to the first embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the heating element in the second embodiment of the present invention. Detailed Implementation

[0023] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. The terms "first," "second," etc., are used only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] This invention provides an aerosol generating device that heats the aerosol generating matrix using a heating-without-combustion method. In some embodiments, the aerosol generating matrix can be columnar, and can be a solid material in the form of strips, flakes, granules, or integral molding made from the leaves and / or stems of plants (e.g., tobacco), and aroma components can be further added to the solid material. The aerosol generating device may include a heating structure and a power supply component (not shown). The heating structure can be at least partially inserted into the aerosol generating matrix and heats the aerosol generating matrix by radiating infrared light, causing the aerosol generating matrix to generate aerosols for the user to inhale. The power supply component (not shown) is connected to the heating structure to supply power to the heating structure.

[0025] Please see Figures 1 to 3This utility model discloses a heating structure according to one embodiment, which includes a tube body 1, a heating element 2, and a support member 3. A cavity is formed inside the tube body 1. Furthermore, the tube wall of the tube body 1 allows infrared light to pass through. The tube body 1 can be at least partially inserted into an aerosol generating matrix. The heating element 2 is at least partially disposed within the cavity. An electrical connection can be formed between the heating element 2 and a power supply component. The heating element 2 is heated when energized, and after heating, it radiates infrared light. This infrared light passes through the tube body 1 to reach the aerosol generating matrix and heats it. In some embodiments, under energized operation, the heating element 2 can reach a maximum temperature of approximately 1000°C, and the atomization temperature of the aerosol generating matrix is ​​controlled below 350°C, achieving precise atomization of the aerosol generating matrix primarily in the infrared 2-4.75µm band and the 8-11µm band. The support member 3 is at least partially disposed within the cavity, in contact with the heating element 2, and is used to support the heating element 2.

[0026] Please see Figure 2 The tube body 1 includes a pointed end 11 and an open end 12. The pointed end 11 facilitates at least partial insertion of the tube body 1 into the aerosol generating matrix, and the open end 12 allows the support member 3 to extend partially. The end of the support member 3 furthest from the pointed end 11 is fixed, while the end of the support member 3 closest to the pointed end 11 is relatively free. Therefore, the support member 3 is equivalent to a cantilever beam structure. When the aerosol generating device falls, the support member 3 swings in a fan-shaped motion along the AA direction with its end furthest from the pointed end 11 as a fixed point; and the closer the position of the support member 3 is to the pointed end 11, the greater the swing displacement along the AA direction. When the aerosol generating device falls, the position where the support member 3 swings the greatest displacement along the AA direction is the end of the support member 3 closest to the pointed end 11, that is, the upper end of the support member 3. If the support member 3 is a one-piece molded independent structure, then when the aerosol generating device falls, the upper end of the support member 3, as the position with the greatest swing displacement, is the main collision point between the support member 3 and the tube body 1 (see...). Figure 2 The collision point is marked as B1. Since the support member 3 is equivalent to a cantilever beam structure, when the support member 3 is a one-piece molded independent structure, the stress arm that drives the support member 3 to swing is equal to the overall length of the support member 3.

[0027] Please see Figure 2To reduce the risk of damage to the tube 1 caused by the collision between the upper end of the support member 3 and the tube 1, in this invention, the support member 3 includes at least two support elements 30 arranged along the axial direction of the tube 1, and each support element 30 is an independent separate structure. That is, the number of support elements 30 can be two, three, four, etc. The independent separate structure of each support element 30 means that each support element 30 is a separately manufactured and installed component; that is, each support element 30 is not integrally formed. Since the support member 3 includes at least two independent support elements 30, only the lowermost support element 30 forms a cantilever beam structure. The ends of the other upper support elements 30 are relatively free, allowing them to swing in sync with the tube 1 when the aerosol generating device falls, reducing the risk of point contact stress on the inner wall of the tube 1. The stress lever arm that drives the lowest support element 30 to swing is equal to the length of the support element 30. Since the length of the support element 30 is less than the overall length of the support member 3, this effectively shortens the lever arm, thereby reducing the impact force between the support member 3 and the tube body 1. In other words, the main point of impact between the support member 3 and the tube body 1 shifts to the upper end of the lowest support element 30 (see...). Figure 2 The main collision point (marked as B2) moves downward, and the swing displacement along the AA direction decreases. Consequently, the point contact stress acting on the inner wall of tube 1 also decreases, thereby reducing the risk of damage to tube 1 when the aerosol generating device falls.

[0028] In some embodiments, at least one support element 30 has a gap between it and the inner wall surface of the tube 1. This gap can range from 0.02 to 0.2 mm. The gap prevents direct contact between the support element 30 and the tube 1. Each support element 30 is made of one of ceramic, quartz, silicone, or high-temperature resistant plastic. The tube 1 can be a quartz glass tube. Of course, in other embodiments, the tube 1 is not limited to an infrared-transmitting quartz tube; it can be other window materials that allow light waves to pass through, such as transparent ceramic or diamond.

[0029] In some embodiments, at least two support elements 30 are coaxially arranged along the axial direction of the tube body 1, that is, at least two support elements 30 have collinear central axes along the axial direction of the tube body 1. Alternatively, in some other embodiments, at least two support elements 30 may be non-coaxial, for example, at least one support element 30 may have no central axis; or at least one support element 30 may have an irregular shape and its central axis may deviate from the central axis of the other support elements 30.

[0030] Please see Figures 1 to 3In some embodiments, the heating structure further includes a fixed flange 4. At least two support elements 30 include a first support element 31, which is the lowest of all support elements 30; that is, the first support element 31 is further away from the tip 11 of the tube body 1 relative to any other support element 30. The first support element 31 extends at least partially from the open end 12 of the tube body 1 outside the tube cavity and is fixedly connected to the fixed flange 4. For example... Figures 1 to 3 In the illustrated embodiment, a portion of the first support element 31 extends out of the pipe cavity from the opening end 12 of the pipe body 1 and is fixedly connected to the fixed flange 4, while the other portion of the first support element 31 remains inside the pipe cavity and contacts the upper support element 30. In other embodiments, the entire first support element 31 may extend out of the pipe cavity from the opening end 12 of the pipe body 1 and be fixedly connected to the fixed flange 4. Specifically, a first adhesive 51 may be provided between the first support element 31 and the fixed flange 4 to bond and fix the first support element 31 to the fixed flange 4. The first adhesive 51 may be a paste-like adhesive, which serves to fix and seal the first support element 31 to the fixed flange 4. Specifically, the end of the first support element 31 away from the tip 11 (i.e., the lower end of the first support element 31) is fixedly connected to the fixed flange 4, and the end of the first support element 31 close to the tip 11 (i.e., the upper end of the first support element 31) is free relative to its lower end and contacts the support element 30 above. Thus, the first support element 31 forms a cantilever beam structure with the lower end fixed and the upper end free.

[0031] Please see Figures 2 to 4 In some embodiments, the fixed flange 4 is provided with a first central through hole 40. The first central through hole 40 includes a first hole position 401 and a second hole position 402 that are connected, and the lateral dimension of the first hole position 401 is larger than the lateral dimension of the second hole position 402. A limiting step 403 is formed at the junction of the first hole position 401 and the second hole position 402. The lateral dimension can be referenced... Figures 2 to 4 The tube body 1 is positioned in the AA direction. The open end 12 of the tube body 1 extends into the first hole 401 and abuts against the limiting step 403. The portion of the first support element 31 extending out of the tube cavity passes through the second hole 402. The first support element 31 and the second hole 402 can be an interference fit, thereby fixing the lower end of the first support element 31. Furthermore, the first adhesive 51 can be disposed between the portion of the lower end of the first support element 31 passing through the second hole 402 and the fixed flange 4.

[0032] Furthermore, such as Figures 1 to 3As shown, in some embodiments, the open end 12 of the tube body 1 extends into the first hole 401, and a sealing element 52 is provided between the open end 12 of the tube body 1 and the hole wall of the first hole 401 to fix and seal the open end 12 of the tube body 1 in the first hole 401.

[0033] like Figure 5 and Figure 6 As shown, in some embodiments, the heating element 2 includes a heating portion 21 and an electrode portion 22 connected together. The heating portion 21 is entirely disposed within the tube body 1 and is at least partially spaced from the inner wall surface of the tube body 1. The heating portion 21 can radiate infrared light when energized, and this infrared light can penetrate the tube body 1 to the aerosol generation matrix. The end of the electrode portion 22 away from the heating portion 21 is used to connect to a power supply component, so the end of the electrode portion 22 away from the heating portion 21 can extend outside the tube cavity. The heating portion 21 may include a first heating portion 211 and a second heating portion 212. The electrode portion 22 may include a first electrode portion 221 and a second electrode portion 222. The first heating portion 211 and the second heating portion 212 are connected to the ends of the tube body 1 facing the tip 11. The first electrode portion 221 and the first heating portion 211 are connected, and the second electrode portion 222 and the second heating portion 212 are connected.

[0034] Specifically, such as Figure 5 As shown, in the first embodiment of the heating element 2, the first heating part 211 serves as the central rod of the second heating part 212, and the second heating part 212 is wound around the periphery of the first heating part 211. The second heating part 212 is generally columnar or cylindrical, and may be generally helical columnar, formed by winding at least one heating wire capable of radiating infrared light. Alternatively, as... Figure 6 As shown, in the second embodiment of the heating element 2, the first heating part 211 and the second heating part 212 are both spiral columnar, and they are intertwined to form a double helix structure.

[0035] The first heating element 211 and / or the second heating element 212 can be a conductor or a resistive heating element. The first heating element 211 and the second heating element 212 can be made of the same material; further, the first heating element 211 and the second heating element 212 made of the same material can be integrally formed; or, the first heating element 211 and the second heating element 212 can also be separate structures; further, when the first heating element 211 and the second heating element 212 are separate structures, the ends of the first heating element 211 and the second heating element 212 facing the tip 11 of the tube body 1 are welded together.

[0036] In some embodiments, the heating element 21 may include a heating substrate and a heat-radiating layer disposed on the heating substrate. The heating substrate can generate heat when energized. The heating substrate can be a heating wire or a heating plate, specifically, it can be a metal wire, which can be a metallic material with good high-temperature oxidation resistance, high stability, and resistance to deformation, such as nickel-chromium alloy (e.g., nickel-chromium alloy wire) or iron-chromium-aluminum alloy (e.g., iron-chromium-aluminum alloy wire). The heat-radiating layer can be an infrared layer. The infrared layer can be formed on the heating substrate under high-temperature heat treatment and can radiate infrared light after heating. The matrix for forming the infrared layer can be silicon carbide, spinel, or a composite matrix thereof. It is understood that in some other embodiments, the heat-radiating layer is not limited to an infrared layer. In some other embodiments, the heat-radiating layer can be a composite infrared layer. In some embodiments, the heating element 21 may also include an anti-oxidation layer formed between the heating substrate and the heat-radiating layer. For example, the heating substrate undergoes high-temperature heat treatment and a dense oxide film is formed on its surface, which can form an anti-oxidation layer.

[0037] The first electrode portion 221 and the second electrode portion 222 can be in the shape of conductive wires or conductive pillars, and are made of conductive materials.

[0038] like Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments, at least two support elements 30 further include a second support element 32. The second support element 32 is entirely located within the cavity. One end of the second support element 32 contacts the first support element 31. The other end of the second support element 32 can contact the second heating element 212 to support it. Alternatively, in embodiments with three or more support elements 30, the other end of the second support element 32 can contact the third support element 30. The cross-sectional dimension of the second support element 32 is less than or equal to the cross-sectional dimension of the first support element 31. For example, when the cross-sections of the second support element 32 and the first support element 31 are circular, the diameter of the second support element 32 is less than or equal to the diameter of the first support element 31. This facilitates the downward displacement of the support point when the aerosol generating device is dropped.

[0039] like Figure 2 and Figure 3 As shown, in some embodiments, the contact point between the first support element 31 and the second support element 32 is located inside the cavity. Thus, only the first support element 31 extends at least partially from the opening end 12 of the tube body 1 outside the cavity, while all other support elements 30 except the first support element 31 are located inside the cavity.

[0040] like Figures 1 to 4As shown, in some embodiments, the fixed flange 4 has a first end face 41 and a second end face 42 facing each other. A first central through hole 40 penetrates the first end face 41 and the second end face 42. The first end face 41 faces the tip 11 of the pipe body 1. The contact point of the first support element 31 and the second support element 32 is not lower than the first end face 41 of the fixed flange 4; that is, the contact point of the first support element 31 and the second support element 32 is located above the first end face 41 of the fixed flange 4, or flush with the first end face 41 of the fixed flange 4 along the AA direction. In this way, downward heat transfer can be reduced, and the drop resistance effect can be further optimized.

[0041] In some embodiments, each support element 30 is provided with at least one mounting channel. Each mounting channel includes a through hole and / or groove extending through each support element 30 along the axial direction of the tube body 1. The through holes and / or grooves of each support element 30 are interconnected. Specifically, the mounting channel extends through at least one end of the support element 30 along the axial direction; that is, the mounting channel may extend through one end of each support element 30 along the axial direction; or, the mounting channel may extend through opposite ends of each support element 30 along the axial direction. The mounting channel includes at least one of a through hole and a groove. The through hole does not extend through the peripheral side surface of each support element 30, while the groove extends through the peripheral side surface of each support element 30. At least the electrode portion 22 is embedded in the mounting channel; that is, only the electrode portion 22 may be embedded in the mounting channel, while the heating portion 21 may not be embedded in the mounting channel; or, both the electrode portion 22 and the heating portion 21 may be embedded in the mounting channel. Thus, each support element 30 is connected in series by the electrode portion 22 (or the electrode portion 22 and the heating portion 21) through the mounting channel. The electrode portion 22 (or the electrode portion 22 and the heating portion 21) serves to constrain the displacement of the support element 30 along the AA direction. In other words, the heating portion 21 and / or the electrode portion 22 can also be limited and fixed through the mounting channel on each support element 30 to prevent the heating element 2 from shifting during assembly. The end of the electrode portion 22 away from the heating portion 21 extends out of the mounting channel to connect to the power supply component.

[0042] Furthermore, in some embodiments, the through-hole includes a second central through-hole extending through the middle of each support element 30 along the axial direction of the tube body 1. That is, the central axis of the second central through-hole is collinear with the central axis of each support element 30. In this way, the support elements 30 are connected in series by the electrode part 22 (or the electrode part 22 and the heating part 21) through the second central through-hole, which can ensure that the support elements 30 and the tube body 1 maintain good coaxiality, which is beneficial to structural stability and avoids collision between the support elements 30 and the tube body 1.

[0043] There is a baffle between the mounting channel for the second electrode 222 and the mounting channel for the first electrode 221. That is, the mounting channel for the second electrode 222 and the mounting channel for the first electrode 221 are not connected to each other along the AA direction to avoid short circuit caused by contact between the second electrode 222 and the first electrode 221.

[0044] like Figure 2 and Figure 3 In the illustrated embodiment, the second support element 32 has two mounting channels: a second central through hole extending axially through both opposite ends of the second support element 32, and a groove extending axially through both opposite ends of the second support element 32 and simultaneously through its peripheral side surface. Similarly, the first support element 31 also has two mounting channels: a second central through hole extending axially through both opposite ends of the first support element 31, and a groove extending axially through both opposite ends of the first support element 31 and simultaneously through its peripheral side surface.

[0045] The first heating element 211 passes through only a portion of the second central through hole on the second support element 32, and the first electrode 221 passes through the other portion of the second central through hole on the second support element 32, and simultaneously passes through the second central through hole on the first support element 31. The second electrode 222 passes through grooves on the second support element 32 and the first support element 31. There is a baffle between the groove for the second electrode 222 and the second central through hole for the first electrode 221. That is, the groove for the second electrode 222 and the second central through hole for the first electrode 221 are not connected along the AA direction to avoid short circuit caused by contact between the second electrode 222 and the first electrode 221.

[0046] When the aerosol generating device falls, although the second support element 32 can swing in the same frequency as the tube 1 along the AA direction, the displacement of the second support element 32 along the AA direction is constrained by the first heating part 211, the first electrode part 221, and the second electrode part 222. The amplitude of the swing of the second support element 32 along the AA direction will not be too large, which helps to reduce the probability of the second support element 32 colliding with the inner wall surface of the tube 1.

[0047] In some other embodiments, the number of mounting channels on each support element 30 can be at least one, and the first electrode part 221 or the second electrode part 222 can also be directly bonded and fixed to the outer surface of each support element 30 by means of dispensing or the like, thereby eliminating the need for a mounting channel.

[0048] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A heat generating structure, characterized by, The application relates to a heating tube, comprising: a tube body (1) internally formed with a tube cavity, wherein a tube wall of the tube body (1) is capable of transmitting infrared light; a heating element (2) arranged at least partially in the tube cavity; a support member (3) arranged at least partially in the tube cavity and used for supporting the heating element (2), wherein the support member (3) comprises at least two support elements (30) arranged along an axial direction of the tube body (1), and each of the support elements (30) is a separate structure.

2. The heat generating structure according to claim 1, characterized in that, The tube body (1) comprises an open end (12), and the heating structure further comprises a fixing flange (4); the at least two support elements (30) comprise a first support element (31), and the first support element (31) at least partially extends out of the tube cavity from the open end (12) of the tube body (1) and is fixedly connected with the fixing flange (4).

3. The heat generating structure according to claim 2, characterized in that The fixing flange (4) is provided with a first central through hole (40) comprising a first hole position (401) and a second hole position (402) in communication, wherein a transverse dimension of the first hole position (401) is greater than that of the second hole position (402), and a limit step (403) is formed at a joint of the first hole position (401) and the second hole position (402); the open end (12) of the tube body (1) extends into the first hole position (401) and abuts against the limit step (403), and the part of the first support element (31) extending out of the tube cavity is arranged in the second hole position (402).

4. The heat generating structure according to claim 2, wherein The at least two support elements (30) further comprise a second support element (32), and the second support element (32) is completely located in the tube cavity; one end of the second support element (32) is in contact with the first support element (31), and a cross-sectional dimension of the second support element (32) is less than or equal to that of the first support element (31).

5. The heat generating structure according to claim 2, wherein The at least two support elements (30) further comprise a second support element (32), and one end of the second support element (32) is in contact with the first support element (31); the contact point of the second support element (32) and the first support element (31) is located inside the tube cavity.

6. The heat generating structure of claim 1, wherein Each of the support elements (30) is provided with at least one mounting channel, and each of the mounting channels comprises a through hole and / or a groove penetrating through each of the support elements (30) along the axial direction of the tube body (1); the heating element (2) comprises a heating part (21) and an electrode part (22) connected with each other, and at least the electrode part (22) is embedded in the mounting channel.

7. The heat generating structure according to claim 6, characterized in that The through hole comprises a second central through hole penetrating through a middle part of each of the support elements (30) along the axial direction of the tube body (1).

8. The heat generating structure of claim 1, wherein There is a gap between at least one of the support elements (30) and an inner wall surface of the tube body (1); and / or, at least two of the support elements (30) are coaxially arranged along the axial direction of the tube body (1).

9. The heat generating structure of claim 1, wherein, The material of each of the support elements (30) comprises one of ceramic, quartz, silica gel and plastic.

10. An aerosol-generating device comprising: The heating structure according to any one of claims 1 to 9, and a power supply assembly connected to the heating structure.

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