Heating assembly and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generation, in particular to a heating assembly and an aerosol generation device.The heating assembly comprises a heating base body and a heating body arranged on the heating base body; the heating base body is provided with a transverse direction and a longitudinal direction; the number of the heating bodies is at least two, and the at least two heating bodies are configured to independently heat or jointly heat; each heating body comprises a first part and a second part, the first part is bent and extends along the transverse direction, and the second part is bent and extends along the longitudinal direction, so that the longitudinal and transverse spaces of the heating base body can be fully utilized, and the occupied space of the heating assembly is saved; more heating bodies can be arranged or the heating area of the heating bodies can be increased in a limited space, so that the heating efficiency is improved; due to the fact that the first part and the second part which are bent and extend longitudinally and transversely are utilized, the heating bodies are arranged in a concentrated mode, the local temperature can be increased, and the heating efficiency is further effectively improved.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and more specifically to a heating component and an aerosol generation device. Background Technology

[0002] Aerosol generating devices utilize the thermal effect of electronic heating elements to bake and heat aerosol-generating products, enabling them to produce volatile substances such as aerosols without combustion. Currently, the heating elements in most aerosol generating devices are arranged circumferentially along the electronic heating element, creating a trade-off between reducing the circumferential size of the electronic heating element and improving its heating efficiency. Utility Model Content

[0003] This application provides a heating component and an aerosol generating device that can resolve the contradiction between reducing the circumferential size of the heating component and improving its heating efficiency, effectively reducing the circumferential size of the heating component and improving its heating efficiency.

[0004] This application provides a heating assembly, including a heating substrate and a heating element disposed on the heating substrate; the heating substrate has a transverse direction and a longitudinal direction; the number of heating elements is at least two, and the at least two heating elements are configured to heat independently or together; each heating element includes a first part and a second part, the first part extending bent along the transverse direction, and the second part extending bent along the longitudinal direction.

[0005] In some optional embodiments, the heating substrate is provided with at least two heating zones, and each heating zone is provided with at least one heating element, which is used to heat the corresponding heating zone.

[0006] In some optional embodiments, the heating substrate has a heating cavity with a receiving opening for inserting the aerosol-generating article into the heating cavity; the heating zone includes a first heating zone and a second heating zone, the distance between the first heating zone and the receiving opening being less than the distance between the second heating zone and the receiving opening; the area of ​​the first heating zone is less than the area of ​​the second heating zone.

[0007] In some optional embodiments, the heating element includes a first heating element and a second heating element, the first heating element is disposed in the first heating zone, the second heating element is disposed in the second heating zone, and the area of ​​the first heating element is smaller than the area of ​​the second heating element; the first part of the first heating element and the first part of the second heating element are respectively disposed opposite to each other at both ends of the heating base along the longitudinal direction, and the second part of the first heating element and the second part of the second heating element are arranged at intervals along the transverse direction.

[0008] In some optional embodiments, an isolation zone is provided between any two adjacent heating zones, the isolation zone being arranged along the boundary line of the two adjacent heating zones to block heat transfer between the adjacent heating zones.

[0009] In some alternative embodiments, the isolation zone includes multiple sub-isolation zones, and adjacent sub-isolation zones are not connected to each other.

[0010] In some optional embodiments, the isolation zone includes a first sub-isolation zone, a second sub-isolation zone, and a third sub-isolation zone, wherein the second sub-isolation zone is disposed between the first sub-isolation zone and the third sub-isolation zone, the first sub-isolation zone and the third sub-isolation zone extend laterally, and the second sub-isolation zone extends longitudinally.

[0011] In some alternative embodiments, the isolation zone includes a perforated structure disposed between two adjacent heating zones; or, the isolation zone includes a thinned structure disposed between two adjacent heating zones, the thickness of the thinned structure being less than the thickness of the heating zone.

[0012] In some optional embodiments, the heating assembly further includes a first conductive part and a second conductive part, with at least two heating elements sharing a first conductive part and each heating element being electrically connected to a second conductive part.

[0013] This application also provides an aerosol generating apparatus, including a power supply component and a heating component as described above, wherein the power supply component is used to provide the power required for the heating component to operate.

[0014] According to the heating component and aerosol generating device in this embodiment, since the heating element of the heating component includes a first part and a second part, the first part extends laterally along the heating substrate and the second part extends longitudinally along the heating substrate, the longitudinal and lateral spaces of the heating substrate can be fully utilized, thereby saving the space occupied by the heating component. More heating elements or an increased heating area of ​​the heating elements can be arranged in a limited space, thereby improving the heating efficiency. Since the first part and the second part extend longitudinally and laterally, the heating elements are concentrated, which can increase the local temperature and further effectively improve the heating efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the generating device in use in one embodiment;

[0016] Figure 2 This is a structural cross-sectional view of the generating device in use in one embodiment;

[0017] Figure 3 This is a schematic diagram of the structure of the heating substrate and the heating element after assembly in one embodiment;

[0018] Figure 4 This is a schematic diagram of the structure of the heating element in one embodiment;

[0019] Figure 5 This is a schematic diagram of the structure of the heating substrate and the heating element after assembly in another embodiment;

[0020] Figure 6 This is a schematic diagram of the structure of the heating substrate in one embodiment;

[0021] Figure 7 This is a schematic diagram of the heating component in one embodiment.

[0022] Wherein: 100, outer shell; 200, power supply component; 300, heating component; 310, heating base; 311, heating zone; 3111, first heating zone; 3112, second heating zone; 312, isolation zone; 3121, first sub-isolation zone; 3122, second sub-isolation zone; 3123, third sub-isolation zone; 320, heating element; 321, first part; 322, second part; 323, first heating element; 324, second heating element; 330, heating cavity; 331, accommodating opening; 340, first conductive part; 350, second conductive part; A, aerosol generating product; X, transverse; Y, longitudinal. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0024] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0026] Please see Figures 1 to 7 An aerosol generating device (hereinafter referred to as "generating device") is an apparatus used to heat an aerosol generating product A to atomize it into an aerosol. The generating device includes a housing 100, a power supply component 200, and a heating component 300. The housing 100 can be understood as an assembly of multiple structural components, which provides installation space for the power supply component 200 and the heating component 300. The power supply component 200 can provide the power required for the operation of the heating component 300. Correspondingly, the heating component 300 can generate heat after being connected to the power supply component 200 to heat the aerosol generating product A.

[0027] It should be noted that the term "aerosol" in this context refers to a dispersion of solid or liquid particles in a gas. The term "aerosol" as used herein can generally refer to substances that have been vaporized, atomized, sprayed, or jetted, or otherwise transformed from a solid or liquid form into an inhalable form containing suspended solid or liquid drug particles.

[0028] Aerosol-generating article A is generally a strip-shaped structure, such as a cylindrical (including near-cylindrical) or polygonal column. Its exterior uses a paper tube as a support structure to prevent the support section from collapsing due to heat deformation, thus avoiding loss of its supporting function. The interior of the paper tube contains a substance capable of atomizing to generate an aerosol. This substance is any suitable compound or mixture of compounds that facilitates aerosol formation during use. This substance includes, but is not limited to: polyols, such as triethylene glycol, 1,3-butanediol, and glycerol; esters of polyols, such as mono-, di-, or triacetic acid esters of glycerol; and aliphatic esters of mono-, di-, or polycarboxylic acids, such as dimethyl dodecanoate and dimethyl tetradecanoate. Nicotine may also be included. Alternatively, glycerol (also known as glycerol) with a higher boiling point than nicotine may be included. Propylene glycol or plant-based materials may also be included.

[0029] In some embodiments, please refer to Figure 3 The heating assembly 300 includes a heating substrate 310 and a heating element 320 disposed on the heating substrate 310. The heating element 320 and the heating substrate 310 are in thermally conductive contact so that the heat generated by the heating element is transferred to the heating substrate 310, and then the heating substrate 310 heats the aerosol-generated product A.

[0030] The thermally conductive contact in this application includes both direct contact and indirect contact capable of transferring heat. Indirect contact can take many forms; for example, a thermally conductive resin may be provided between the heating substrate 310 and the heating element 320. To further ensure safety, this thermally conductive resin has insulating properties, thus both conducting heat and insulating the heating substrate 310 and the heating element 320.

[0031] Heating the aerosol-generating article A by the heating substrate 310 in this application includes heating by heat conduction after the heating substrate 310 and the aerosol-generating article A come into direct contact, and also includes heating the air by heating the air with the heating substrate 310 to form a hot airflow, and using the hot airflow to heat the aerosol-generating article A.

[0032] In some embodiments, the heating element 320 is disposed on the surface of the heating substrate 310 or embedded in the surface of the heating substrate 310. For example, the heating element 320 is disposed on the surface of the heating substrate 310. The heating element 320 may be a heating trajectory printed on the surface of the heating substrate 310, with an insulating layer between the heating trajectory and the heating substrate 310. In this case, the heating substrate 310 may be a metal tube with good thermal conductivity. As another example, the heating element 320 is embedded in the heating substrate 310. The heating element 320 may be a resistance wire, which is laid along a predetermined trajectory on the heating substrate 310 and embedded within the heating substrate 310. An insulating layer is also provided between the resistance wire and the heating substrate 310. In this case, the heating substrate 310 may also be a metal tube with good thermal conductivity.

[0033] In some embodiments, the heating element 320 is made of a silver-palladium alloy or a copper-nickel alloy, and the silver-palladium alloy or copper-nickel alloy is prepared as a conductive paste, which is then applied or printed onto the heating substrate 310 along the heating trajectory.

[0034] In some embodiments, the heating substrate 310 has a transverse X and a longitudinal Y, and the number of heating elements 320 is at least two. The at least two heating elements 320 are configured to heat independently or together. The operation of one heating element 320 can be controlled independently, or multiple heating elements 320 can work together, thereby adjusting the heating temperature of the heating assembly 300 to adapt to the heating requirements of different aerosol-generating products A, or to change the amount of aerosol generated by using different temperatures to meet the different needs of users for the amount of aerosol generated.

[0035] Please see Figure 4Each heating element 320 includes a first portion 321 and a second portion 322. The first portion 321 extends and bends along the transverse direction X, and the second portion 322 extends and bends along the longitudinal direction Y. Since the heating substrate 310 has longitudinal direction Y and transverse direction X, extending the first portion 321 and the second portion 322 of the heating element 320 along different directions allows for a reasonable design and application of the longitudinal direction Y and transverse direction X space of the heating substrate 310. This increases the heating area within a limited space, thereby improving the heating efficiency of the heating assembly 300. This design also saves design space for the heating substrate 310.

[0036] The first portion 321 and the second portion 322 of this application are bent and extended, forming a continuous wavy structure in their extension direction, the wavy structure including at least one U-shaped structure. For example, the first portion 321 and the second portion 322 of the heating element 320 may each include one U-shaped structure. As another example, the first portion 321 and the second portion 322 of the heating element 320 may each include two U-shaped structures, the number of which is determined according to the heating requirements. The U-shaped structure design makes the heat of the heating element 320 more concentrated and increases the heating area. At the same time, the overall U-shaped structure has a smooth transition, reducing sharp parts and avoiding localized heat concentration in the heating element 320, thereby effectively ensuring the suction effect and taste.

[0037] The heating base 310 has at least two heating zones 311, and each heating zone 311 is provided with at least one heating element 320. The heating element 320 is used to independently heat the corresponding heating zone 311. In a specific embodiment, the number of heating zones 311 and heating elements 320 are in one-to-one correspondence.

[0038] Please see Figure 5 The heating base 310 has two heating zones 311 and two heating elements 320. In some other embodiments, the number of heating zones 311 and heating elements 320 can be increased as needed; for example, the number of heating zones 311 and heating elements 320 can both be three. In some other embodiments, each heating zone 311 can be provided with more than two heating elements 320. The heating base 310 has at least two heating zones 311, allowing users to select a single heating zone 311 or multiple heating zones 311 as needed, which helps to achieve zoned heating and effectively improve the user's suction experience.

[0039] In some embodiments, the heating substrate 310 is a sheet-like structure. The heating substrate 310 can be directly disposed at one end of the aerosol-generating product A, and the aerosol-generating product A can be heated by direct heat conduction or hot air flow. The heating substrate 310 can also be wound around a predetermined axis extending in the longitudinal Y direction to form a cylindrical structure. The cylindrical structure has a heating cavity 330, and the heating cavity 330 has a receiving opening 331 for inserting the aerosol-generating product A into the heating cavity 330. After being wound and formed, the heating element 320 is disposed on the inner or outer surface of the cylindrical structure, and the aerosol-generating product A is heated by circumferential heating or other composite heating methods including circumferential heating.

[0040] In other embodiments, the heating substrate 310 may also be a tube structure with a heating cavity 330 in the middle. At least one end of the tube structure is open, and the heating element 320 is disposed on the inner or outer surface of the tube structure. The axial direction of the tube structure is the longitudinal direction Y of the heating substrate 310, and the circumferential direction is the transverse direction X of the heating substrate 310.

[0041] In some embodiments, the heating substrate 310 is provided with two heating zones 311, including a first heating zone 3111 and a second heating zone 3112. The distance between the first heating zone 3111 and the accommodating opening 331 is less than the distance between the second heating zone 3112 and the accommodating opening 331; the area of ​​the first heating zone 3111 is less than the area of ​​the second heating zone 3112. Since the first heating zone 3111 is located closer to the accommodating opening 331, that is, closer to the user's suction end, and the heating area of ​​the first heating zone 3111 is smaller than the area of ​​the second heating zone 3112, the temperature of the first heating zone 3111 can be reduced, avoiding the transfer of high temperature to the suction end and scalding the user. It can also prevent the aerosol from forming high-temperature steam at this location, avoiding scalding the user. Furthermore, the first heating zone 3111 can be used to preheat the entire generating device, making the generating device work stably.

[0042] In some embodiments, please continue reading Figure 5The heating element 320 includes a first heating element 323 and a second heating element 324. The first heating element 323 is disposed in the first heating zone 3111, and the second heating element 324 is disposed in the second heating zone 3112. The area of ​​the first heating element 323 is smaller than the area of ​​the second heating element 324. The first portion 321 of the first heating element 323 and the first portion 321 of the second heating element 324 are respectively disposed opposite to each other along the longitudinal direction Y at both ends of the heating base 310. The second portions 322 of the first heating element 323 and the second portion 322 of the second heating element 324 are arranged at intervals along the transverse direction X. The first portions 321 of the first heating element 323 and the first heating element 324 extend along the transverse direction X. After the heating base 310 is wound into a cylindrical structure, the first portions 321 can surround the aerosol-generated product A, thereby making the circumference of the aerosol-generated product A uniformly heated. The first heating element 323 and the second part 322 of the second heating element 324 extend along the longitudinal direction Y and are arranged at intervals along the transverse direction X. After the heating substrate 310 is wound into a cylindrical structure, they are arranged along the circumferential direction, which can also make the circumference of the aerosol generating product A uniformly heated.

[0043] Please see Figure 5 and Figure 6 An isolation zone 312 is provided between any two adjacent heating zones 311. The isolation zone 312 is set along the boundary line of the two adjacent heating zones 311 to block heat transfer between adjacent heating zones 311. By setting the isolation zone 312, heat transfer between two adjacent heating zones 311 can be avoided, thereby reducing heat loss. For example, by setting the isolation zone 312 between two adjacent heating zones 311, when one of the two adjacent heating zones 311 is working alone, the heat transferred to the other heating zone 311 is reduced, reducing energy waste, and allowing the temperature of the heating zone 311 working alone to rise faster and the heating efficiency to be higher.

[0044] In one specific embodiment, an isolation zone 312 is provided between the first heating zone 3111 and the second heating zone 3112. When only the first heating zone 3111 is working and the second heating zone 3112 is not working, the heat transfer speed decreases when passing through the isolation zone 312, and the amount of heat transferred to the second heating zone 3112 is reduced.

[0045] In some embodiments, the isolation region 312 includes a plurality of sub-isolation regions 312, and adjacent sub-isolation regions 312 are not connected. Dividing the isolation region 312 into a plurality of sub-isolation regions 312, with adjacent sub-isolation regions 312 being independent of each other, helps to reduce the risk of the isolation region 312 adversely affecting the strength of the heating substrate 310, and helps to ensure the normal operation of the heating component 300.

[0046] Please continue reading. Figure 6 The isolation zone 312 includes a first sub-isolation zone 3121, a second sub-isolation zone 3122, and a third sub-isolation zone 3123. The second sub-isolation zone 3122 is located between the first sub-isolation zone 3121 and the third sub-isolation zone 3123. The first sub-isolation zone 3121 and the third sub-isolation zone 3123 extend in the horizontal direction X, and the second sub-isolation zone 3122 extends in the vertical direction Y. Specifically, the first sub-isolation zone 3121 is located on the side of the first portion 321 of the first heating element 323 facing away from the receiving opening 331, and is positioned between the first portion 321 of the first heating element 323 and the second portion 322 of the second heating element 324. The second sub-isolation zone 3122 is positioned between the second portion 322 of the first heating element 323 and the second portion 322 of the second heating element 324. The third sub-isolation zone 3123 is located on the side of the first portion 321 of the second heating element 324 close to the receiving opening 331, and is positioned between the second portion 322 of the first heating element 323 and the first portion 321 of the second heating element 324. The cooperation of the first sub-isolation zone 3121, the second sub-isolation zone 3122, and the third sub-isolation zone 3123 allows the first and third sub-isolation zones to block heat transfer along the longitudinal Y direction, and the second sub-isolation zone 3122 to block heat transfer along the transverse X direction. Thus, almost all heat transfer paths between the first heating element 323 and the second heating element 324 can be precisely blocked.

[0047] In some embodiments, the isolation region 312 is a strip structure, including a perforated structure disposed between two adjacent heating regions 311. For example, the perforated structure includes a strip-shaped groove structure that extends from one side of the heating substrate 310 to the other side. Alternatively, the perforated structure can be a dotted through-hole structure that extends from one side of the heating substrate 310 to the other side, and multiple dotted through-hole structures are arranged in a row along the transverse X or longitudinal Y direction to form a strip structure. The cross-sectional profile of the dotted through-hole structure in this application can be circular, elliptical, quadrilateral, or other polygonal structures.

[0048] In other embodiments, the isolation region 312 includes a thinning structure disposed between two adjacent heating regions 311. The thickness of the thinning structure is less than the thickness of the heating region 311. Since the thickness of the isolation region 312 is less than the thickness of the heating region 311, the heat transfer rate of the isolation region 312 can be reduced, thereby helping to slow down the heat conduction rate between adjacent heating regions 311, reducing heat loss, and improving heating efficiency. Compared to a hollow structure, the thinning structure is non-through, which can reduce the impact on the strength of the heating component 300. The thinning structure can also be a strip blind groove structure, or a row of multiple dot-shaped blind holes spaced apart along the longitudinal Y or transverse X direction. The cross-sectional profile of the dot-shaped blind hole structure in this application can also be circular, elliptical, quadrilateral, or other polygonal structures.

[0049] In other embodiments, the isolation zone 312 may also be an isolation material embedded between two adjacent heating zones 311. The thermal conductivity of the isolation material is less than that of the heating substrate 310, which can reduce the heat transfer rate between the two heating zones 311, reduce heat loss, and improve heating efficiency.

[0050] In some embodiments, the heating assembly 300 further includes a first conductive part 340 and a second conductive part 350, at least two heating elements 320 share a first conductive part 340, and each heating element 320 is electrically connected to a second conductive part 350.

[0051] In this application, at least two heating elements 320 share a first conductive portion 340. This can be achieved by all heating elements 320 sharing a single first conductive portion 340, or by several heating elements 320 sharing a single first conductive portion 340. This reduces the number of conductive portions in the heating elements 320, decreasing the area occupied by the conductive portions and allowing more area to be used for the heating elements 320. This increases the heating area on the heating substrate 310, further improving the heating efficiency of the heating assembly 300. For a specific embodiment, please refer to... Figure 7 The first heating element 323 and the second heating element 324 share a first conductive part 340, and both the first heating element 323 and the second heating element 324 are provided with a conductive part. This design also helps to achieve independent control of the first heating element 323 and the second heating element 324.

[0052] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A heating assembly, characterized in that, It includes a heating substrate and a heating element disposed on the heating substrate; the heating substrate has a transverse and a longitudinal dimension. The number of heating elements is at least two, and the at least two heating elements are configured to heat independently or together; Each of the heating elements includes a first portion and a second portion, the first portion extending along the lateral bend and the second portion extending along the longitudinal bend.

2. The heating assembly according to claim 1, characterized in that, The heating substrate has at least two heating zones, and each heating zone is provided with at least one heating element, which is used to heat the corresponding heating zone.

3. The heating assembly according to claim 2, characterized in that, The heating substrate has a heating cavity with a receiving opening for inserting the aerosol-generating product into the heating cavity; the heating zone includes a first heating zone and a second heating zone, the distance between the first heating zone and the receiving opening is less than the distance between the second heating zone and the receiving opening; the area of ​​the first heating zone is less than the area of ​​the second heating zone.

4. The heating assembly according to claim 3, characterized in that, The heating element includes a first heating element and a second heating element. The first heating element is disposed in the first heating zone, and the second heating element is disposed in the second heating zone. The area of ​​the first heating element is smaller than the area of ​​the second heating element. The first part of the first heating element and the first part of the second heating element are respectively disposed opposite to each other at both ends of the heating base along the longitudinal direction, and the second part of the first heating element and the second part of the second heating element are arranged at intervals along the transverse direction.

5. The heating assembly according to claim 2, characterized in that, An isolation zone is provided between any two adjacent heating zones. The isolation zone is set along the boundary line of the two adjacent heating zones to block the heat transfer between the adjacent heating zones.

6. The heating assembly according to claim 5, characterized in that, The isolation zone includes multiple sub-isolation zones, and adjacent sub-isolation zones are not connected.

7. The heating assembly according to claim 6, characterized in that, The isolation zone includes a first sub-isolation zone, a second sub-isolation zone, and a third sub-isolation zone. The second sub-isolation zone is located between the first sub-isolation zone and the third sub-isolation zone. The first sub-isolation zone and the third sub-isolation zone extend laterally, and the second sub-isolation zone extends longitudinally.

8. The heating assembly according to any one of claims 5-7, characterized in that, The isolation zone includes a hollow structure disposed between two adjacent heating zones; or, the isolation zone includes a thinning structure disposed between two adjacent heating zones, wherein the thickness of the thinning structure is less than the thickness of the heating zone.

9. The heating assembly according to claim 1, characterized in that, The heating assembly further includes a first conductive part and a second conductive part, at least two heating elements share a first conductive part, and each heating element is electrically connected to a second conductive part.

10. An aerosol generating device, characterized in that, It includes a power supply component and a heating component as described in any one of claims 1-9, wherein the power supply component is used to provide the power required for the heating component to operate.

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