Heating components and aerosol generating device

Abstract

This application relates to the technical field of aerosol generation devices, disclosing a heating assembly and an aerosol generation device. The heating assembly includes an inner tube, a first outer tube, and a second outer tube. The inner tube defines a first chamber, in which a first heating element is housed. The first outer tube is seamlessly connected to the inner tube and defines a second chamber, which is used to house at least a portion of the aerosol-generated product. The second outer tube is disposed radially around the inner tube, and a sealed heat insulation layer surrounds the inner tube. The first outer tube is configured to release heat to heat the aerosol-generated product. The inner tube and the first outer tube of this application's heating assembly can be seamlessly connected by welding or by integral molding. This not only solves the sealing problem at the connection between the inner tube and the first outer tube but also improves the structural strength of the connection and extends the service life of the heating assembly.

Description

Technical Field

[0001] This application relates to the field of aerosol generating apparatus technology, and in particular to a heating component and an aerosol generating apparatus. Background Technology

[0002] The aerosol generating apparatus includes a heating component, a power supply component, and an electrical control component. The heating component is used to receive at least a portion of the aerosol generating article and heat it to generate aerosol. To improve the taste and quality of the aerosol, the heating component can simultaneously heat the ends and circumferential sidewalls of the aerosol generating article.

[0003] However, the end heating structure and the circumferential heating structure are usually connected by an intermediate connection structure. On the one hand, the intermediate connection structure absorbs heat, which increases power consumption and affects heating efficiency; on the other hand, it is difficult to form a seal between the end heating structure and the circumferential heating structure, which makes it easy for hot air and recirculating aerosol to leak from between the end heating structure and the circumferential heating structure. Utility Model Content

[0004] This application provides a heating component and an aerosol generating device, which can effectively solve the sealing problem, simplify the structure of the heating component, and improve the heating efficiency of aerosol-generated products.

[0005] In a first aspect, one technical solution adopted in the embodiments of this application is: providing a heating assembly including an inner tube, a first outer tube, and a second outer tube. The inner tube defines a first chamber, in which a first heating element is accommodated; the first outer tube is seamlessly connected to the inner tube, and the first outer tube defines a second chamber, which is used to accommodate at least a portion of an aerosol-generating article; the second outer tube is disposed radially around the inner tube, and the second outer tube and the inner tube are surrounded by a sealed heat insulation layer; the first outer tube is configured to release heat to heat the aerosol-generating article.

[0006] In some embodiments, the inner tube is welded to the first outer tube or integrally formed; the inner tube is welded to the second outer tube or integrally formed.

[0007] In some embodiments, the first chamber is configured to direct airflow to the second chamber, and the first heating element is configured to heat the air flowing through the first chamber.

[0008] In some embodiments, the first chamber includes a retaining chamber and a communicating chamber, the communicating chamber being disposed between the retaining chamber and the second chamber, and the first heating element being disposed in the retaining chamber.

[0009] In some embodiments, the inner tube includes a first portion defining the boundary of the communicating cavity and a second portion defining the boundary of the retaining cavity, wherein the inner diameter of the first portion is smaller than the inner diameter of the second portion, or the cross-sectional area of ​​the insertion cavity is smaller than the cross-sectional area of ​​the retaining cavity.

[0010] In some embodiments, the first heating element includes a porous assembly that allows air to pass through, and the inner tube further includes a third portion that connects the first portion and the second portion, the third portion being inclined or perpendicular to the first portion, and the third portion being used to abut against the porous assembly.

[0011] In some embodiments, the first portion is connected to the first outer tube, and the inner diameter of the first portion is the same as the inner diameter of the first outer tube.

[0012] In some embodiments, the heating assembly further includes a second heating element disposed on the outer wall of the first outer tube, the second heating element being configured to generate heat and transfer heat to the first outer tube.

[0013] In some embodiments, the first outer tube extends longitudinally, and there is a longitudinal gap between the first heating element and the second heating element.

[0014] In some embodiments, the first outer tube is made of metal; and / or, the inner wall of the end of the first outer tube opposite to the inner tube is outwardly expanding; and / or, the inner tube is made of metal.

[0015] In some embodiments, the insulation layer includes one of an air layer, a vacuum layer, or a negative pressure layer.

[0016] Secondly, another technical solution adopted in the embodiments of this application is to provide an aerosol generating device, including a heating component.

[0017] The beneficial effects of the embodiments of this application are: the inner tube and the first outer tube of the heating component of this application are directly and seamlessly connected without the need for an intermediate connecting structure to connect the two, which not only solves the sealing problem between the inner tube and the first outer tube, but also reduces heat loss, which is conducive to improving energy utilization and reducing power consumption. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the aerosol generating apparatus according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the heating assembly according to an embodiment of this application;

[0021] Figure 3 This is a cross-sectional view of the heating assembly according to an embodiment of this application;

[0022] Figure 4This is a cross-sectional view of a heating assembly according to another embodiment of this application;

[0023] Figure 5 This is a cross-sectional view of a heating assembly according to another embodiment of this application. Detailed Implementation

[0024] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0026] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0027] Please see Figure 1 This application provides an aerosol generating apparatus, which includes a heating component 100, a housing assembly 200, an electrical control component 300, and a power supply component 400. The heating component 100, the electrical control component 300, and the power supply component 400 are disposed inside the housing assembly 200, and the electrical control component 300 is electrically connected to the heating component 100 and the power supply component 400, respectively. The heating component 100 is used to heat at least a portion of the aerosol generating article. Under the control of the electrical control component 300, the power supply component 400 provides electrical energy to the heating component 100, so that the heating component 100 heats the aerosol generating article to produce aerosol for the user to inhale.

[0028] For the heating assembly 100 described above, please refer to... Figure 2 and Figure 3The heating assembly 100 includes an inner tube 10, a first outer tube 20, and a second outer tube 30. The inner tube 10 extends longitudinally and defines a first chamber 11 inside. The first chamber 11 contains a first heating element 41, which is electrically connected to the electronic control assembly 300. The first heating element 41 is configured to directly or indirectly heat the aerosol-generating article within the first chamber 11.

[0029] The first outer tube 20 and the inner tube 10 are arranged longitudinally and seamlessly connected. The first outer tube 20 defines a second chamber 21, which communicates with the first chamber 11. The second chamber 21 is used to contain and fix at least a portion of the aerosol-generating article. The first outer tube 20 is configured to release heat to heat the aerosol-generating article. In the heating assembly 100 of this application, by directly and seamlessly connecting the first outer tube 20 and the inner tube 10, intermediate connection structures are reduced, effectively solving the problems of difficult assembly and sealing of the first outer tube 20 and the inner tube 10, improving the sealing performance and thus improving the heating efficiency of the heating assembly 100 for the aerosol-generating article.

[0030] In some embodiments, the inner tube 10 and the first outer tube 20 can be seamlessly connected by welding or by integral molding. This not only solves the sealing problem at the connection between the inner tube 10 and the first outer tube 20, but also improves the structural strength of the connection and extends the service life of the heating assembly 100. It should be noted that the term "seamless connection" as used herein mainly refers to a sealing condition at the connection point, preventing gas and liquid from passing through. The location of the "seamless connection" may have a clear or indistinct boundary line or connection mark.

[0031] The second outer tube 30 is disposed on the radial periphery of the inner tube 10, and the second outer tube 30 and the inner tube 10 are enclosed by a closed heat insulation layer 31. The heat insulation layer 31 is used to reduce the radial heat exchange between the first chamber 11 and the outside, thereby ensuring that the heat in the first chamber 11 is mainly used for direct or indirect heating of the aerosol-generated product, improving energy efficiency. As some examples, the heat insulation layer 31 may include an air layer, a vacuum layer, a negative pressure layer, an inert gas layer, or a material layer with low thermal conductivity, such as an aerogel layer, a mineral wool layer, a foam plastic layer, an asbestos layer, etc.

[0032] In some embodiments, the first chamber 11 is configured to guide airflow to the second chamber 21, and the first heating element 41 is configured to heat the air flowing through the first chamber 11 to form a hot airflow, which heats the aerosol-generating article. As an example, the first heating element 41 is a bottom heating element, which is disposed at the end of the inner tube 10 that contacts or is close to the aerosol-generating article. The heat released by the bottom heating element can directly or indirectly bake the aerosol-generating article, making the end of the aerosol-generating article have a high temperature. When air flows through the bottom heating element, a hot airflow is formed, which flows from the end of the aerosol-generating article into the aerosol-generating article, thereby heating the aerosol-generating article.

[0033] In further embodiments, please refer to Figure 4 and Figure 5 The bottom heating element includes a porous component 41 that allows air to pass through. The porous component 41 has multiple airflow channels 41a for air circulation. The porous component 41 may include graphene material, etc. The porous component 41 is disposed inside the inner tube 10 and is fixedly connected to the inner tube 10. The porous component 41 can generate heat, so when outside air flows through the airflow channels 41a into the first chamber 11, the air is heated by the porous component 41 to form a hot airflow.

[0034] As another example, the first heating element 41 includes a sidewall heating element disposed on the inner wall surface of the inner tube 10. The sidewall heating element is configured to heat the air flowing into the first chamber 11 to form a hot airflow, which heats the aerosol-generating article. Alternatively, the sidewall heating element is configured to be located on the outer side of the circumferential wall of the aerosol-generating article to heat the aerosol-generating article circumferentially. For example, the first heating element 41 can be a self-heating or induction-heating layer, heating plate, MESH heating mesh, spiral heating coil, or electromagnetic heating metal ring, etc.

[0035] In some embodiments, please refer to Figure 3 The first chamber 11 includes a holding chamber 131 and a communicating chamber 121. The communicating chamber 121 is longitudinally disposed between the holding chamber 131 and the second chamber 21, and the communicating chamber 121 connects the holding chamber 131 and the second chamber 21. The first heating element 41 is disposed in the holding chamber 131.

[0036] In some embodiments, the aerosol generating article is inserted from the second chamber 21 into the first chamber 11, with one end of the aerosol generating article located in the holding cavity 131, and the inner wall of the communicating cavity 121 adhering to the outer wall of the aerosol generating article to hold the aerosol generating article within the first chamber 11 and the second chamber 21. In this embodiment, a first heating element 41 located inside the first chamber 11 or located on the inner wall of the first chamber 11 can heat the aerosol generating article.

[0037] In other embodiments, when the aerosol generating article is joined to the heating assembly, it is longitudinally spaced from the first heating element 41 disposed in the first chamber 11. This avoids the high-temperature first heating element 41 directly contacting the end of the aerosol generating article, which could overheat and burn the end of the aerosol generating article, affecting the taste of the aerosol. For example, a portion of the aerosol generating article is inserted into the communicating cavity 121 but not into the holding cavity 131; or, a portion of the aerosol generating article is inserted into the communicating cavity 121 and enters a portion of the space in the holding cavity 131; or, at least a portion of the aerosol generating article is inserted into the second chamber 21 but not into the first chamber 11.

[0038] In some embodiments, please refer to Figure 3 The inner tube 10 includes a first portion 12 and a second portion 13 that are seamlessly connected longitudinally, wherein the first portion 12 defines the boundary of the communicating cavity 121 and the second portion 13 defines the boundary of the retaining cavity 131. It is understood that the seamless connection between the first portion 12 and the second portion 13 can be achieved by welding or integral molding.

[0039] The inner diameter of the first part 12 is close to or equal to the outer diameter of the aerosol-generating article, or the inner diameter of the first part 12 is slightly smaller than the outer diameter of the aerosol-generating article. This allows the outer wall surface of the aerosol-generating article to just abut or slightly press against the inner wall of the communicating cavity 121, thereby holding the aerosol-generating article on the communicating cavity 121. In some examples, the inner diameter of the first part 12 may be equal to the inner diameter of the second part 13, so that the first part 12 and the second part 13 together adhere and fix to the aerosol-generating article.

[0040] In other examples, the inner diameter of the first portion 12 is smaller than the inner diameter of the second portion 13, meaning the radial space of the retaining cavity 131 is larger. If at least a portion of the aerosol-generated article can enter the retaining cavity 131 for heating, the circumferential outer wall of the aerosol-generated article located within the retaining cavity 131 is spaced apart from the inner wall of the retaining cavity 131. Of course, in other embodiments, when the inner tube 10 is not a cylindrical tube, for example, when the inner tube 10 is a square or polygonal tube, the cross-sectional area of ​​the communicating cavity 121 is smaller than the cross-sectional area of ​​the retaining cavity 131.

[0041] The above structure allows the first heating element 41 to better heat the aerosol-generating product, especially in situations such as... Figure 4In the embodiment shown, the first heating element 41 includes a porous component 41 disposed in the first chamber 11. At least a portion of the aerosol generating article can enter the holding chamber 131 for heating. The hot airflow heated by the porous component 41 can reach the end of the aerosol generating article and the circumferential sidewall, so that it can be heated simultaneously in the axial and radial directions, thereby improving heating efficiency and ensuring the taste of the aerosol.

[0042] Furthermore, in embodiments where at least a portion of the aerosol-generating article can be heated within the holding cavity 131, direct contact between the circumferential sidewall of the aerosol-generating article and the inner tube 10 can be avoided, thereby reducing the heat absorption of the inner tube 10 from the aerosol-generating article and reducing heating efficiency. The aerosol-generating article is radially spaced from the inner tube 10 to form an air layer, which, together with the heat insulation layer 31 between the inner tube 10 and the second outer tube 30, effectively reduces the heat transfer of the aerosol-generating article to the outside in the radial direction, thus effectively keeping the aerosol-generating article warm.

[0043] In some embodiments, the first portion 12 is seamlessly connected to the first outer tube 20, and the inner diameter of the first portion 12 is the same as the inner diameter of the first outer tube 20, such that the diameter of the communicating cavity 121 is the same as the diameter of the second chamber 21. Alternatively, in other examples, the cross-sectional area of ​​the communicating cavity 121 is equal to the cross-sectional area of ​​the second chamber 21. The outer diameter of the aerosol-generated article is approximately equal to the inner diameter of the first portion 12, which allows the first portion 12 and the first outer tube 20 to simultaneously adhere to and clamp the aerosol-generated article, keeping it within at least a portion of the space of the second chamber 21 and the first chamber 11.

[0044] In some embodiments, reference may be made to Figure 5 The inner wall of the end of the first outer tube 20 away from the inner tube 10 is outwardly expanding, that is, the end 21a of the first outer tube 20 away from the inner tube 10 is similar to a trumpet-shaped structure. This has a guiding effect on the aerosol generating product, so that it can be smoothly and easily inserted into the second chamber 21.

[0045] In some embodiments, please refer to Figure 3 The inner tube 10 also includes a third part 14, which is seamlessly connected to the first part 12 and the second part 13 respectively. The third part 14 is inclined or perpendicular to the first part 12, or the third part 14 protrudes toward the center of the first chamber 11. The third part 14 is used to abut against the first heating element 41 to limit the position of the first heating element 41 in the first chamber 11.

[0046] The following explanation uses a porous assembly 41 as an example of a first heating element 41. Please refer to [link / reference]. Figure 5At least a portion of the outer diameter of the porous component 41 is equal to or substantially equal to the inner diameter of the second portion 13, such that at least a portion of the porous component 41 can be fitted into the retaining cavity 131 from the side of the inner tube 10 opposite to the first outer tube 20. The end of the porous component 41 abuts against the third portion 14 to restrict longitudinal entry of the porous component 41 into the communicating cavity 121. In this example, the retaining cavity 131 is configured to mount at least a portion of the porous component 41, with the aerosol-generated article inserted into the second chamber 21 and the communicating cavity 121.

[0047] In some embodiments, please refer to Figure 2 and Figure 4 The heating assembly 100 also includes a second heating element 42, which is disposed on the outer wall of the first outer tube 20. The second heating element 42 is configured to generate heat and transfer heat to the first outer tube 20 to heat the first outer tube 20, thereby transferring the heat from the first outer tube 20 to the aerosol-generating article located in the second chamber 21 for circumferential heating. In this way, the first heating element 41 and the second heating element 42 of the heating assembly 100 work together to simultaneously heat the end and circumferential aspects of the aerosol-generating article, improving heating efficiency.

[0048] In some embodiments, the second heating element 42 may be a resistance heating element or an electromagnetic heating element, or it may be a self-heating coating or an induction heating coating formed on the outer wall of the first outer tube 20, or it may be a MESH heating mesh, a spiral heating coil, an electromagnetic heating metal ring, etc., disposed on the outer wall of the first outer tube 20. The number of second heating elements 42 may be one, two, or more, such as... Figure 2 As shown, the two second heating elements 41a and 42b are spaced apart in the longitudinal direction.

[0049] In other embodiments, the first outer tube 20 is configured to generate heat in a varying magnetic field. Furthermore, the second heating element 42 includes a magnetic field generator capable of producing a varying magnetic field; for example, the second heating element 42 may include a helical coil that receives alternating current or a varying current.

[0050] In some embodiments, please refer to Figure 4 and Figure 5 The first outer tube 20 extends longitudinally, and there is a longitudinal gap between the first heating element 41 and the second heating element 42. Because the first heating element 41 provided in the inner tube 10 can heat a certain length of aerosol-generating product in the longitudinal direction, the longitudinal spacing of the first heating element 41 and the second heating element 42 can avoid overheating of the end of the aerosol-generating product and the phenomenon of scorching.

[0051] In some embodiments, the inner tube 10 is made of metal, and the first outer tube 20 may also be made of metal. On the one hand, the inner tube 10 and the first outer tube 20, both made of metal, can be welded together or manufactured as a single piece; on the other hand, the inner tube 10 made of metal has good thermal conductivity, so that when the end of the aerosol generating article is located in the connecting cavity 121, the heat released by the first heating element can not only heat the end of the aerosol generating article or heat the air, but also allow the first part 12 to absorb the heat of the second part 13 through the heat conduction of the inner tube 10, thereby achieving a higher temperature, and then heating the aerosol generating article circumferentially through the first part 12. Furthermore, the heat on the inner tube 10 can be longitudinally transferred to the first outer tube 20, and the aerosol generating article circumferentially heated through the first outer tube 20.

[0052] The first outer tube 20, made of metal, has good thermal conductivity. When the second heating element 42 is provided on the outer wall of the first outer tube 20, the heat released by the second heating element 42 can be efficiently transferred to the first outer tube 20, and the circumferential sidewall of the aerosol-generated product is uniformly heated by the first outer tube 20.

[0053] In some embodiments, the second outer tube 30 is also made of metal, and the metal second outer tube 30 is easy to weld to the metal inner tube 10, or to be integrally molded.

[0054] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A heating assembly for an aerosol-generating device, the heating assembly comprising: include: The inner tube defines a first chamber, in which a first heating element is housed; A first outer tube, seamlessly connected to the inner tube, and defining a second chamber for accommodating at least a portion of the aerosol-generated article; and, The second outer tube is disposed radially around the inner tube, and the second outer tube and the inner tube are surrounded by a sealed heat insulation layer. The first outer tube is configured to release heat to heat the aerosol-generated product.

2. The heating assembly according to claim 1, characterized in that, The inner tube is welded to the first outer tube or integrally formed; The inner tube is welded to the second outer tube or integrally formed.

3. The heating assembly according to claim 1, characterized in that, The first chamber is configured to direct airflow to the second chamber, and the first heating element is configured to heat the air flowing through the first chamber.

4. The heating assembly according to claim 3, characterized in that, The first chamber includes a retaining chamber and a communicating chamber, the communicating chamber being disposed between the retaining chamber and the second chamber, and the first heating element being disposed in the retaining chamber.

5. The heating assembly according to claim 4, characterized in that, The inner tube includes a first portion defining the boundary of the communicating cavity and a second portion defining the boundary of the retaining cavity, wherein the inner diameter of the first portion is smaller than the inner diameter of the second portion, or the cross-sectional area of ​​the communicating cavity is smaller than the cross-sectional area of ​​the retaining cavity.

6. The heating assembly according to claim 5, characterized in that, The first heating element includes a porous assembly that allows air to pass through, and the inner tube further includes a third portion connecting the first portion and the second portion, the third portion being inclined or perpendicular to the first portion, the third portion being used to abut against the porous assembly.

7. The heating assembly according to claim 5, characterized in that, The first part is connected to the first outer tube, and the inner diameter of the first part is the same as the inner diameter of the first outer tube.

8. The heating assembly according to claim 1, characterized in that, The heating assembly further includes a second heating element disposed on the outer wall of the first outer tube, and the second heating element is configured to generate heat and transfer heat to the first outer tube.

9. The heating assembly according to claim 8, characterized in that, The first outer tube extends longitudinally, and there is a longitudinal gap between the first heating element and the second heating element.

10. The heating assembly according to claim 1, characterized in that, The first outer tube is made of metal; and / or, The inner wall of the end of the first outer tube opposite to the inner tube is outwardly expanding; and / or, The inner tube is made of metal.

11. The heating assembly according to claim 1, characterized in that, The insulation layer includes one of an air layer, a vacuum layer, or a negative pressure layer.

12. An aerosol-generating device comprising: Includes the heating assembly as described in any one of claims 1-11.

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