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 body; the heating element is at least partially arranged in the tube cavity, the heating element comprises a heating part, at least two electrode parts and at least two connecting parts, the heating part and the electrode parts are in one-to-one correspondence, and the connecting parts are connected between the heating part and the electrode parts; the supporting piece is at least partially arranged in the tube cavity and is provided with at least one channel, at least one electrode part is arranged in the channel in a penetrating mode, and at least one connecting part is arranged in the channel. The connecting parts are connected between the heating part and the electrode part, and at least one connecting part is arranged in the channel on the supporting piece, so that exposure of the connecting parts can be reduced, and the risk of interference between the connecting parts and the inner wall surface of the tube body 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. The heating element's heating section and electrode section are welded together, and the support is used to support the heating element. Due to the need for assembling and positioning the heating element, the weld point between the heating section and the electrode section is usually positioned on the upper surface of the support. However, if the aerosol generating device is dropped, the weld point may come into contact with the tube, potentially causing the tube to crack. 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 interference between the weld points and the pipe body.

[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 body can allow infrared light to pass through; the heating element is at least partially disposed in the cavity, and the heating element includes a heating part, at least two electrode parts, and at least two connecting parts, the heating part and the electrode parts correspond one-to-one, and the connecting parts are connected between the heating part and the electrode parts; the support member is at least partially disposed in the cavity, and has at least one channel, at least one of the electrode parts passing through the channel, and at least one of the connecting parts being disposed in the channel.

[0005] In some embodiments, the at least one channel includes a through hole and / or a groove extending axially through the support member, the groove being recessed inward from the outer periphery of the support member, and the through hole penetrating from the interior of the support member.

[0006] In some embodiments, the surface of the connecting portion disposed in the groove facing the inner wall of the tube does not protrude from the outer peripheral surface of the support.

[0007] In some embodiments, the surface of the connecting portion disposed within the groove facing the inner wall of the tube is a smooth surface.

[0008] In some embodiments, the heating structure further includes an isolating member disposed at the opening of the groove facing the tube body and covering the connecting portion disposed in the groove, so as to isolate the connecting portion disposed in the groove and the inner wall surface of the tube body from each other.

[0009] In some embodiments, there is a gap between the inner wall surface of the tube and the support member.

[0010] In some embodiments, at least one of the heating elements includes a spiral columnar first heating segment and a second heating segment connected to the first heating segment. The end of the second heating segment away from the first heating segment is connected to at least one of the connecting portions and a corresponding electrode portion, and the second heating segment extends at least partially into the channel.

[0011] In some embodiments, a bending angle greater than 0° and less than 180° is formed between the second heating segment and the first heating segment.

[0012] In some embodiments, the connection portion is a solder joint.

[0013] 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.

[0014] This invention has at least the following advantages: Since the connecting part is connected between the heating part and the electrode part, and at least one connecting part is provided in the channel on the support, the exposed connecting part can be reduced, thereby reducing the risk of interference between the connecting part and the inner wall surface of the tube. Attached Figure Description

[0015] 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:

[0016] Figure 1 This is a schematic diagram of the heating structure in some embodiments of this utility model;

[0017] Figure 2 yes Figure 1 A schematic diagram of the longitudinal cross-sectional structure of the heating structure shown.

[0018] Figure 3 yes Figure 1 A schematic diagram of the exploded structure of the heating structure shown.

[0019] Figure 4 yes Figure 3 A further exploded structural diagram of the heating structure shown;

[0020] Figure 5 This is a structural schematic diagram of the support member in some embodiments of this utility model;

[0021] Figure 6 yes Figure 5 A schematic diagram of the structure when the support and heating element are assembled together;

[0022] Figure 7 This is a schematic diagram of the heating element according to the first embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the heating element according to the second embodiment of the present invention;

[0024] Figure 9 yes Figure 7 A magnified structural diagram of part A in the diagram. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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, allowing 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. When energized, the heating element 2 is heated and radiates infrared light, which passes through the tube body 11 to reach the aerosol generating matrix and heat it. In some embodiments, when energized, 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 2-4.75µm and 8-11µm infrared light bands.

[0028] The heating element 2 includes a heating part 21, at least two electrode parts 22, and at least two connecting parts 23. The heating part 21 and the electrode parts 22 correspond one-to-one, and the connecting parts 23 connect the heating part 21 and the electrode parts 22. In some embodiments, the heating element 2 includes at least two heating parts 21, at least two electrode parts 22, and at least two connecting parts 23. The electrode parts 22 are connected to a power supply component. The heating parts 21 and the electrode parts 22 correspond one-to-one, and each heating part 21 and its corresponding electrode part 22 are connected by at least one connecting part 23. That is, each heating part 21 and its corresponding electrode part 22 can be connected by one or more connecting parts 23. In some embodiments, the heating part 21 and the electrode parts 22 are connected by welding, and the connecting part 23 can be a solder joint.

[0029] The support member 3 is at least partially disposed within the cavity to support the heating element 2. The support member 3 has at least one channel 4. The electrode portion 22 typically needs to pass through the channel 4 on the support member 3 to connect to the power supply assembly; therefore, at least one electrode portion 22 passes through the channel 4. However, in some embodiments, some electrode portions 22 may not pass through the channel 4 but are fixed to the outer surface of the support member 3 by means of adhesive dispensing or other methods. When the support member 3 has at least two channels 4, a baffle is provided between the at least two channels 4; that is, the at least two channels 4 are not directly connected laterally to avoid the electrode portions 22 within the at least two channels 4 contacting each other and short-circuiting.

[0030] To facilitate the installation of the electrode section 22, related technologies typically place the solder joint above the outside of the channel 4 on the support member 3, so that the relatively large solder joint is precisely positioned above the channel 4. However, as described in the background art, the exposed solder joint increases the risk of interference between the solder joint and the inner wall surface of the tube body 1. During assembly, the solder joint can easily scratch the inner wall surface of the tube body 1; when the aerosol generating device is bumped or dropped during transportation, the solder joint and the inner wall surface of the tube body 1 are prone to collision, causing localized point stress fatigue on the inner wall surface of the tube body 1.

[0031] In this invention, to reduce the risk of interference between the weld point and the pipe body 1, at least one connecting part 23 is provided inside the channel 4. That is, only part of the connecting part 23 can be provided inside the channel 4, or all of the connecting parts 23 can be provided inside the channel 4. In this way, the exposed connecting parts 23 can be reduced, thereby reducing the risk of interference between the connecting parts 23 and the inner wall surface of the pipe body 1.

[0032] 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. The electrode part 22 can be in the shape of a conductive wire or a conductive post, and is made of a conductive material.

[0033] In some embodiments, a gap exists between the support member 3 and the inner wall surface of the tube body 1. This gap can range from 0.02 to 0.2 mm. This gap prevents direct contact between the support member 3 and the tube body 1. The support member 3 is made of one of ceramic, quartz, silicone, or high-temperature resistant plastic. The tube body 1 can be a quartz glass tube. Of course, in other embodiments, the tube body 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.

[0034] Further, in some embodiments, at least one channel 4 includes a through hole 41 and / or a groove 42 extending axially (referring to the axial direction of the tube body 1) through the support member 3. The difference between the through hole 41 and the groove 42 is that the groove 42 is recessed inward from the outer peripheral surface of the support member 3, that is, the groove 42 extends through the outer peripheral surface of the support member 3; the through hole 41 extends from the inside of the outer peripheral surface of the support member 3; the through hole 41 does not extend through the outer peripheral surface of the support member 3. The through hole 41 extends axially through two opposite end faces of the support member 3. The groove 42 extends axially through at least one end face of the support member 3. For example, Figures 2 to 4 In the illustrated embodiment, the channel 4 includes a groove 42 and a through hole 41. A portion of one heating element 21, along with its corresponding connecting portion 23 and electrode portion 22, passes through the same through hole 41. Similarly, a portion of another heating element 21, along with its corresponding connecting portion 23 and electrode portion 22, passes through the same groove 42. Alternatively, in other embodiments, the at least one channel 4 may include only one of the through hole 41 and the groove 42.

[0035] Because the groove 42 is recessed inward from the outer periphery of the support member 3, the surface of the connecting portion 23 disposed in the groove 42 facing the inner wall of the tube body 1 is exposed. In some embodiments, the surface of the connecting portion 23 disposed in the groove 42 facing the inner wall of the tube body 1 does not protrude from the outer periphery of the support member 3. That is, the surface of the connecting portion 23 disposed in the groove 42 facing the inner wall of the tube body 1 can be flush with the outer periphery of the support member 3, or recessed relative to the outer periphery of the support member 3. For example, the lateral dimension of the groove 42 can be set to be larger than the dimension of the connecting portion 23, and the connecting portion 23 can be entirely disposed in the groove 42, thus ensuring that the surface of the connecting portion 23 disposed in the groove 42 facing the inner wall of the tube body 1 does not protrude from the outer periphery of the support member 3. In this way, interference between the surface of the connecting portion 23 disposed in the groove 42 facing the inner wall of the tube body 1 and the inner wall of the tube body 1 can be avoided.

[0036] In some embodiments, the surface of the connecting portion 23 disposed within the groove 42 facing the inner wall of the tube body 1 is a smooth surface. Specifically, this smooth surface refers to a surface where all points transition smoothly without sharp protrusions. For example, the smooth surface may include an arc-shaped surface, a wavy surface, etc., where all points transition gently. Alternatively, after the connecting portion 23 is inserted into the groove 42, the portion of the connecting portion 23 protruding from the outer peripheral surface of the support member 3 may be cut off, so that the surface of the connecting portion 23 facing the inner wall of the tube body 1 forms a flat surface. In this way, even if the connecting portion 23 and the inner wall of the tube body 1 accidentally come into contact, no point stress will be generated on the inner wall of the tube body 1.

[0037] like Figure 5 and Figure 6As shown, in some embodiments, the heating structure further includes an isolating member 5. The isolating member 5 is disposed at the opening of the groove 42 facing the inner wall surface of the tube body 1 and covers the connecting portion 23 disposed within the groove 42. The isolating member 5 isolates the connecting portion 23 disposed within the groove 42 from the inner wall surface of the tube body 1. That is, the isolating member 5 is located between the connecting portion 23 and the inner wall surface of the tube body 1 within the groove 42, thus acting as a barrier between the connecting portion 23 and the inner wall surface of the tube body 1. The isolating member 5 can be connected to the outer peripheral surface of the support member 3 by means of bonding or the like; or, the isolating member 5 can be integrally formed with the support member 3. Specifically, the material of the support member 3 can include one of ceramic, quartz, silicone, and plastic. The material of the isolating member 5 integrally formed with the support member 3 is the same as the material of the support member 3. Alternatively, the isolating member 5 can also be made of other materials such as ceramic, quartz, silicone, and plastic that are different from the material of the support member 3. Thus, by isolating the connecting part 23 provided in the groove 42 and the inner wall surface of the tube 1 with the isolation member 5, interference between the surface of the connecting part 23 provided in the groove 42 facing the inner wall surface of the tube 1 and the inner wall surface of the tube 1 can be avoided.

[0038] like Figure 7 and Figure 8 As shown, in some embodiments, at least one heating element 21 includes a spiral columnar first heating section 211 and a second heating section 212 connected to the first heating section 211. Specifically, as... Figure 7 and Figure 8 In the illustrated embodiment, the heating element 2 includes two heating portions 21, namely a first heating portion and a second heating portion. For example... Figure 7 As shown, in the first embodiment of the heating element 2, the first heating part includes a spiral columnar first heating segment 211 and a second heating segment 212 connected to the first heating segment 211; the second heating part is a vertically extending, elongated columnar shape. The second heating part serves as the central rod of the first heating part and is arranged around the periphery of the first heating part. The ends of the second heating part and the first heating part, respectively, away from the electrode part 22, are connected. For example... Figure 8 As shown, in the second embodiment of the heating element 2, there are two heating parts 21, each including a spiral columnar first heating section 211 and a second heating section 212 connected to the first heating section 211. That is, each of the first heating part and the second heating part includes a spiral columnar first heating section 211 and a second heating section 212 connected to the first heating section 211. The first heating part and the second heating part are intertwined to form a double helix structure.

[0039] Continue as Figure 7 and Figure 8As shown, in some embodiments, the end of the second heating segment 212 away from the first heating segment 211 is connected to the corresponding electrode segment 22 via at least one connecting portion 23. Furthermore, the second heating segment 212 extends at least partially into the channel 4. In related technologies, due to the special shape of the first heating segment 211, the welding point is usually located between the spiral end of the helical columnar first heating segment 211 and the corresponding electrode segment 22. Since the spiral end extends roughly horizontally, while the electrode segment 22 needs to extend vertically, this is usually a right-angle weld, making butt welding impossible. In this embodiment, a second heating segment 212 is added between the first heating segment 211 and the electrode segment 22. The second heating segment 212 is equivalent to an extension of the first heating segment 211, thereby extending the length of the heating segment 21 and folding the heating segment 21 into the channel 4. The connecting portion 23 (welding point) is transferred between the second heating segment 212 and the electrode segment 22, and the second heating segment 212 extends at least partially into the channel 4, thus placing the connecting portion 23 also within the channel 4. Furthermore, the extension directions of the second heating section 212 and the electrode section 22 can be aligned, allowing for butt welding of the two sections. This ensures precise alignment, small weld joints with no sharp axial angles, and the welding direction aligns with the tensile force direction of both sections, resulting in a more robust weld. It should be noted that butt welding of the second heating section 212 and the electrode section 22 refers to welding their end faces together along their extension directions.

[0040] Furthermore, such as Figure 9 As shown, in some embodiments, a bending angle B of approximately 90° is formed between the second heating segment 212 and the first heating segment 211. For example, this bending angle can be between 80° and 100°. However, the bending angle is not limited to approximately 90°; any bending angle greater than 0° and less than 180° is acceptable. Therefore, the extending direction of the second heating segment 212 can be as close as possible to or equal to the extending direction of the electrode portion 22, thereby facilitating the welding of the second heating segment 212 and the electrode portion 22.

[0041] 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 heating structure, characterized in that, include: The tube (1) has a cavity inside, and the tube (1) is able to allow infrared light to pass through; A heating element (2) is at least partially disposed in the cavity. The heating element (2) includes a heating part (21), at least two electrode parts (22) and at least two connecting parts (23). The heating part (21) and the electrode parts (22) correspond one-to-one. The connecting parts (23) are connected between the heating part (21) and the electrode parts (22). The support member (3) is at least partially disposed within the cavity and has at least one channel (4), at least one electrode part (22) is disposed within the channel (4), and at least one connecting part (23) is disposed within the channel (4).

2. The heating structure according to claim 1, characterized in that, The at least one channel (4) includes a through hole (41) and / or a groove (42) extending axially through the support member (3), the groove (42) being recessed inward from the outer periphery of the support member (3), and the through hole (41) penetrating from the interior of the support member (3).

3. The heating structure according to claim 2, characterized in that, The surface of the connecting part (23) located in the groove (42) facing the inner wall of the tube body (1) does not protrude from the outer peripheral surface of the support member (3).

4. The heating structure according to claim 2, characterized in that, The surface of the connecting part (23) located in the groove (42) facing the inner wall of the tube body (1) is a smooth surface.

5. The heating structure according to claim 2, characterized in that, The heating structure also includes an isolation member (5), which is disposed at the opening of the groove (42) facing the tube body (1) and covers the connecting part (23) disposed in the groove (42) to isolate the connecting part (23) disposed in the groove (42) and the inner wall surface of the tube body (1) from each other.

6. The heating structure according to claim 1, characterized in that, There is a gap between the inner wall of the tube (1) and the support (3).

7. The heating structure according to claim 1, characterized in that, At least one of the heating elements (21) includes a spiral columnar first heating segment (211) and a second heating segment (212) connected to the first heating segment (211). The end of the second heating segment (212) away from the first heating segment (211) is connected to at least one of the connecting parts (23) and the corresponding electrode part (22), and the second heating segment (212) extends at least partially into the channel (4).

8. The heating structure according to claim 7, characterized in that, A bending angle (B) greater than 0° and less than 180° is formed between the second heating segment (212) and the first heating segment (211).

9. The heating structure according to claim 1, characterized in that, The connecting part (23) is a solder joint.

10. An aerosol generating device, characterized in that, It includes the heating structure as described in any one of claims 1 to 9, and the power supply component connected to the heating structure.

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