Heating element structure and aerosol generation device

Abstract

This utility model discloses a heating element structure and an aerosol generating device, relating to the field of aerosol generating devices. The heating element structure includes: a main body with a cavity for inserting an aerosol product; and at least one heating element, which is at least partially embedded in the main body and is used to heat the aerosol product.

Description

Technical Field

[0001] This utility model relates to the technical field of aerosol generating devices, and in particular to a heating element structure and an aerosol generating device. Background Technology

[0002] In traditional heated tobacco products, the typical structure is a straight steel tube sealed at both ends with upper and lower shells, or with additional sealing rings on the upper and lower shells. In terms of usage, long-term use carries the risk of compression fatigue leading to leakage, and there is a high risk of e-liquid leaking into the cavity. Utility Model Content

[0003] The main purpose of this invention is to provide a heating element structure that addresses the risk of air leakage that occurs during long-term use of traditional heating structures.

[0004] To achieve the above objectives, the heating element structure proposed in this utility model includes:

[0005] The main body has a cavity for inserting aerosol products;

[0006] At least one heating element is provided, which is at least partially embedded in the body, and is used to heat the aerosol product.

[0007] This invention also proposes an aerosol generating device, including the heating element structure described above. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of the heating element provided by this utility model from one angle.

[0010] Figure 2 This is a schematic diagram of another angle of the heating element structure embodiment provided by this utility model;

[0011] Figure 3 An exploded structural diagram of an embodiment of the heating element structure provided by this utility model;

[0012] Figure 4 This is a cross-sectional structural schematic diagram of an embodiment of the heating element structure provided by this utility model.

[0013] Explanation of icon numbers:

[0014] 100. Main body; 110. Cavity; 120. Molding groove; 130. First positioning groove; 140. Second positioning groove;

[0015] 200. Heating element;

[0016] 300. Connector; 310. First positioning part; 320. Second positioning part; 330. Positive electrode plate; 340. Negative electrode plate;

[0017] 400. Electrical connection cable.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] In existing technologies, the traditional structure of heated tobacco products typically uses a straight steel tube with upper and lower shells for compression sealing, or with additional sealing rings on the upper and lower shells for compression sealing. In terms of usage, long-term use carries the risk of leakage due to compression fatigue, and there is a high risk of e-liquid leaking into the cavity. Furthermore, e-liquid accumulates during use, making it difficult to clean and affecting taste and usability. The complex structure and cumbersome manufacturing and assembly processes also increase the likelihood of defects.

[0023] This utility model proposes a heating element structure.

[0024] Please see Figures 1 to 4 In one embodiment of the present invention, the heating element structure includes: a main body 100 and at least one heating element 200, wherein the main body 100 is provided with a cavity 110 for inserting aerosol products; the heating element 200 is at least partially embedded in the main body 100 and is used to heat the aerosol products.

[0025] In the specific implementation process, the main body 100 is a one-piece structure with a cavity 110 for inserting the aerosol product. The heating element 200 is at least partially embedded and fixed to the main body 100 to heat the aerosol product to form aerosol gas for the user to inhale. Specifically, to ensure uniform heating, when the aerosol is located within the cavity 110, the heating element 200 surrounds the outer periphery of the aerosol product. Specifically, on one hand, through holes can be formed in the heating element 200 that fit the cavity 110; on the other hand, the heating element 200 can be arranged to form through holes that fit the cavity 110. Thus, after the aerosol product is inserted into the cavity 110, the heating element 200 can heat the surrounding area of ​​the aerosol product, ensuring uniform heating, and achieving a high temperature of approximately 200-300 degrees Celsius.

[0026] This invention employs a cavity 110 within the main body 100 for inserting an aerosol product, and embeds a heating element 200 within the main body 100. The heating element 200 heats the aerosol product within the cavity 110 to generate aerosol. Compared to existing heating element structures that require multiple connections to fix and heat the aerosol product, this invention eliminates the risk of leakage due to compression fatigue between structures, ensuring the airtightness of the heating element structure and enabling effective and smooth aerosol extraction. This invention primarily simplifies the structure of the main body 100, reduces the risk of airtight leakage, and addresses the problem of difficult-to-clean e-liquid accumulation. These challenges are pain points in the field of heated non-combustible electronic cigarettes and represent future market trends. The heating element structure proposed in this invention is not only simple in structure and assembly, but also highly reliable, enhancing product competitiveness.

[0027] In one embodiment, the heating element 200 and the main body 100 are integrally injection molded.

[0028] In the specific implementation process, the heating element 200 is made of a metal material that generates heat when energized, such as nickel-chromium alloy, stainless steel, or other high-temperature resistant metals. The heating element 200 and the main body 100 are injection molded together using an injection mold. Specifically, the heating element 200 is first placed in the cavity of the injection mold, and then injection fluid is introduced into the cavity for cooling, forming an integrated structure of the main body 100 and the heating element 200. The main body 100 is made of PEEK material or other high-temperature resistant plastics. The assembly and production process of the heating element structure is simple, there is no risk of airtightness, and it is easy to clean.

[0029] In one embodiment, multiple heating elements 200 are spaced apart along the axial direction of the main body 100, and each heating element 200 is partially embedded in the main body 100 and partially exposed on the outer peripheral surface of the main body 100; the heating element structure also includes a connector 300, and the portions of the multiple heating elements 200 exposed on the outer peripheral surface of the main body 100 are electrically connected through the connector 300.

[0030] To accommodate aerosol products of different sizes and ensure a certain heating range, multiple heating elements 200 are provided, spaced apart to fill a portion of the main body 100, thus ensuring the stability of each heating element 200. The multiple heating elements 200 are electrically connected via connectors 300. Specifically, at least a portion of each heating element 200 extends beyond the outer peripheral wall of the main body 100 to facilitate connection by the connectors 300.

[0031] refer to Figure 4As shown, further, the outer peripheral surface of the main body 100 has a molding groove 120, and the heating element 200 is exposed in the molding groove 120. The distance L1 between the surface of the heating element 200 facing away from the bottom of the molding groove 120 and the bottom surface of the molding groove 120 is at least 0.5 mm. The outer peripheral wall of the main body 100 is recessed to form the molding groove 120. Multiple molding grooves 120 are provided, and the multiple molding grooves 120 are spaced apart along the circumference of the main body 100. The portion of the heating element 200 exposed in the main body 100 is located in the molding groove 120, and the connecting piece extends to a portion of the molding groove 120 and is connected to the heating element 200. It should also be noted that the heating element 200 and the main body 100 are integrally injection molded. First, the heating element 200 is placed in the cavity of the mold. The distance L1 between the surface of the heating element 200 facing away from the bottom of the molding groove 120 and the bottom surface of the molding groove 120 is at least 0.5mm, so as to facilitate the placement and fixing of the heating element 200 in the cavity. After the heating element 200 and the main body 100 are injection molded, the connecting piece 300 is then connected to the heating element 200.

[0032] In another embodiment, the spacing L2 between the multiple heating elements 200 is at least 0.8 mm. If the mold portion between two heating elements 200 is too thin, it may be damaged, affecting injection molding. The thickness L3 of the heating element 200 is at least 0.5 mm to prevent it from being too thin and easily deformed, which could affect the strength of the entire heating element structure and the heating effect, thus preventing potential hazards.

[0033] refer to Figure 3 As shown, in one embodiment, the main body 100 is further provided with a first positioning groove 130, and the connector 300 is provided with a first positioning part 310, which is accommodated in the first positioning groove 130.

[0034] In this embodiment, the first positioning groove 130 is formed on the part of the main body 100 corresponding to the heating element 200 and close to one end of the main body 100. Furthermore, the first positioning groove 130 is connected to the molding groove 120, and the first positioning part 310 is located at one end of the connector 300. The connector 300 is positioned with the first positioning part 310 and the first positioning groove 130, and then covers and electrically connects to the heating element 200 to realize the heating element 200 being electrically heated.

[0035] Furthermore, the main body 100 is also provided with a second positioning groove 140, and the connector 300 is provided with a second positioning part 320. The first positioning part 310 and the second positioning part 320 are arranged opposite to each other, and the second positioning part 320 is located in the second positioning groove 140.

[0036] The second positioning part 320 is located at the end of the connector 300 opposite to the first positioning part 310. Correspondingly, the second positioning groove 140 is disposed opposite to the first positioning groove 130 and is located at the end of the forming groove 120 opposite to the first positioning groove 130. The connector piece is positioned by the first positioning groove 130 and the second positioning groove 140, which can improve assembly efficiency. In one embodiment, the heating plate 200 is welded to the connector 300, specifically by laser welding.

[0037] In one embodiment, the connector 300 includes a positive electrode 330 and a negative electrode 340, and the positive electrode 330 and the negative electrode 340 are respectively connected to an electrical connection wire 400.

[0038] Multiple heating elements 200 are arranged in parallel. The positive electrode 330 and the negative electrode 340 are arranged opposite each other and connected to the heating elements 200 respectively. The positive electrode 330 is connected to the positive electrical connection line 400, and the negative electrode 340 is connected to the negative electrical connection line 400, so as to realize the current path, so that the multiple electrical connection lines in parallel can be energized and heated. The multiple heating elements 200 arranged in parallel do not affect each other, ensuring smooth heating.

[0039] In one embodiment, the heating element 200 has an annular structure. Furthermore, the inner diameter of the annular heating element 200 is adapted to the cavity 110 to ensure the smoothness of the inner wall of the cavity 110, so as to facilitate the insertion of aerosol products and avoid wear.

[0040] Additionally, it is understood that the aerosol product is inserted into the cavity 110, heated to generate aerosol gas, and then the aerosol gas is drawn in. Thus, the main body 100 has an air inlet and an air outlet. The illustration in this embodiment shows a straight cylindrical type with the air inlet and air outlet coaxial. Of course, the air inlet can also be extended to an L-shape, a U-shape, or other shapes, which are not limited in this embodiment.

[0041] This utility model also proposes an aerosol generating device, which includes a heating element structure. The specific structure of the heating element structure is as described in the above embodiments. Since this aerosol generating device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. The two ends of the main body of the heating element structure can be connected to other structures of the aerosol generating device with sealing rings to achieve a sealing effect, further ensuring the airtightness of the heating structure and preventing gas leakage.

[0042] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the inventive concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A heating element structure, characterized in that, include: The main body has a cavity for inserting aerosol products; At least one heating element is provided, which is at least partially embedded in the body, and is used to heat the aerosol product.

2. The heating element structure as described in claim 1, characterized in that, The heating element and the main body are integrally injection molded.

3. The heating element structure as described in claim 1 or 2, characterized in that, The heating elements are spaced apart along the axial direction of the main body, and each heating element is partially embedded in the main body and partially exposed on the outer peripheral surface of the main body; the heating element structure also includes a connector, and the portions of the multiple heating elements exposed on the outer peripheral surface of the main body are electrically connected through the connector.

4. The heating element structure as described in claim 3, characterized in that, The outer peripheral surface of the main body has a forming groove, the heating element is exposed in the forming groove, and the distance between the surface of the heating element facing away from the bottom of the forming groove and the bottom surface of the forming groove is at least 0.5 mm.

5. The heating element structure as described in claim 3, characterized in that, The main body is also provided with a first positioning groove, and the connector is provided with a first positioning part, which is accommodated in the first positioning groove.

6. The heating element structure as described in claim 5, characterized in that, The main body is also provided with a second positioning groove, and the connector is provided with a second positioning part. The first positioning part and the second positioning part are disposed opposite to each other, and the second positioning part is disposed in the second positioning groove.

7. The heating element structure as described in claim 3, characterized in that, The connector includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively connected to electrical connecting wires; and / or, The heating element is welded to the connector.

8. The heating element structure as described in claim 7, characterized in that, The minimum spacing between the multiple heating elements is 0.8 mm.

9. The heating element structure as described in claim 1, characterized in that, The heating element has a ring structure; and / or, The thickness of the heating element is at least 0.5 mm.

10. An aerosol generating device, characterized in that, Includes the heating element structure as described in any one of claims 1-9.

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