Thermal insulation assembly and aerosol-generating device

Abstract

The utility model discloses a kind of heat insulation components, comprising: inner sleeve, inner sleeve inside forms the accommodating cavity for accommodating aerosol generating article;Outer sleeve, it is located at the outer periphery of inner sleeve, and form chamber between inner sleeve;Multi-layer heat insulation layer, from inside to outside, it is sequentially spaced between the chamber of inner sleeve and outer sleeve, the heat insulation layer located in innermost layer is attached with the outer peripheral wall of inner sleeve, the heat insulation layer located in outermost layer is attached with the inner peripheral wall of outer sleeve;Heat-absorbing layer, it is located between two adjacent heat insulation layers.Using the above technical scheme, in the heat insulation component of the utility model, heat insulation layer can reduce heat conduction speed, heat-absorbing layer can absorb more heat, reduce the amplitude of temperature rise, also can store a part of heat, when needing continuous heating aerosol generating article, heat start and heat response time of subsequent cigarette can be reduced, and heat preservation and heat insulation effect is good.The utility model also discloses aerosol generating device.

Description

Technical Field

[0001] This utility model relates to the field of novel tobacco products technology, specifically to a heat insulation component and an aerosol generating device. Background Technology

[0002] Heated non-combustible cigarette devices are the core supporting equipment for heated non-combustible tobacco products. Their working principle is to heat the heated non-combustible aerosol generating product within a specific temperature range through built-in heating elements, causing the aerosol generating matrix in the product to volatilize and form an aerosol for consumers to smoke. Heated non-combustible cigarette devices have important application value in the consumer market and the tobacco industry.

[0003] In heated tobacco products, the heat from the heating core area is usually diffused to other components (such as circuit modules and housings) within the device through heat conduction, heat convection, or heat radiation. The heat insulation measures for the heating core area directly affect the heating rate of the heating element and the atomization effect on the aerosol generation matrix, as well as the surface temperature of the device's housing and the tactile temperature felt by the consumer when holding the device.

[0004] In the prior art, patent CN103826482B achieves thermal insulation by using vacuum tubes to block heat convection and heat conduction, but the processing and assembly of vacuum tubes are quite difficult. In addition, the prior art usually only uses a single insulation method, which is difficult to effectively block the heat conduction path, resulting in heat from the core heating area still easily diffusing to other components in the smoke appliance, and the overall thermal insulation effect is poor. Utility Model Content

[0005] This utility model proposes a heat insulation component to solve the above-mentioned technical problems.

[0006] In a first aspect, embodiments of this utility model disclose a heat insulation component, comprising:

[0007] Inner sleeve, the inside of which forms a receiving cavity for accommodating aerosol-generated products;

[0008] The outer sleeve is located on the outer periphery of the inner sleeve, forming a cavity between them;

[0009] Multiple insulation layers are arranged sequentially from the inside to the outside in the cavity between the inner sleeve and the outer sleeve. The innermost insulation layer is attached to the outer peripheral wall of the inner sleeve, and the outermost insulation layer is attached to the inner peripheral wall of the outer sleeve.

[0010] The heat-absorbing layer is located between two adjacent insulation layers.

[0011] By adopting the above technical solution, the heat insulation component of this utility model, through the arrangement of multiple layers of heat insulation and heat absorption layers in the cavity between the inner and outer sleeves, and the alternating arrangement of the heat insulation and heat absorption layers, the heat insulation layer can reduce the heat conduction speed and reduce the diffusion of heat from the heating core area to other components within the smoke device. The heat absorption layer, located between adjacent heat insulation layers, can actively absorb excess local heat, reducing the temperature rise. Simultaneously, the heat absorption layer can store some heat. When continuous heating of the aerosol-generated product is required, the stored heat can provide residual heat for subsequent aerosol-generated products, significantly shortening the thermal start-up and thermal response time of subsequent aerosol-generated products, resulting in excellent overall heat insulation performance. Furthermore, the heat insulation component has a simple structure, facilitating processing and assembly.

[0012] According to another specific embodiment of the present invention, the heat insulation layer is a heat insulation tube, the heat absorption layer is a heat absorption tube, and the heat absorption tube is nested between two adjacent heat insulation tubes.

[0013] According to another specific embodiment of the present invention, a mirror reflection layer is also included, which is disposed between two adjacent heat insulation layers.

[0014] According to another specific embodiment of the present invention, a heat-absorbing layer is provided on the side of the mirror-reflective layer near the inner sleeve, and a heat-insulating layer is provided on the side of the mirror-reflective layer near the outer sleeve.

[0015] According to another specific embodiment of the present invention, the heat insulation layer is a heat insulation tube, the mirror reflection layer is a mirror reflection tube, the heat absorption layer is a heat absorption tube, and the mirror reflection tube is nested between adjacent heat absorption tubes and heat insulation tubes.

[0016] According to another specific embodiment of the present invention, the surface roughness of the mirror reflection layer is no greater than 0.1 micrometers.

[0017] According to another specific embodiment of the present invention, a heat-conducting layer is also included, which is disposed between two adjacent heat insulation layers.

[0018] According to another specific embodiment of the present invention, a heat insulation layer is provided on the side of the heat-conducting layer near the inner sleeve, and a heat-absorbing layer is provided on the side of the heat-conducting layer near the outer sleeve.

[0019] According to another specific embodiment of the present invention, the heat insulation layer is a heat insulation pipe, the heat conduction layer is a heat conduction pipe, the heat absorption layer is a heat absorption pipe, and the heat conduction pipe is nested between adjacent heat insulation pipes and heat conduction pipes.

[0020] Secondly, embodiments of this utility model disclose an aerosol generating device, including the heat insulation component described in any of the preceding claims.

[0021] The aerosol generating device of this invention, employing the above-described technical solution, incorporates a heat insulation component. By setting multiple layers of heat insulation and heat absorption layers within the cavity between the inner and outer sleeves, and alternating between these layers, the heat insulation layer reduces the heat conduction rate, minimizing heat diffusion from the heating core area to other components within the aerosol generating device. The heat absorption layer, positioned between adjacent heat insulation layers, actively absorbs excess local heat, reducing the temperature rise. Simultaneously, the heat absorption layer stores some heat. When continuous heating of the aerosol-generated product is required, the stored heat can provide residual heat for subsequent aerosol-generated products, significantly shortening the thermal start-up and thermal response time of subsequent aerosol-generated products, resulting in excellent overall heat insulation performance. Furthermore, the aforementioned heat insulation component has a simple structure, facilitating processing and assembly into the aerosol generating device. Attached Figure Description

[0022] Figure 1 A schematic cross-sectional view of the heat insulation component in an embodiment of this utility model is shown. Figure 1 ;

[0023] Figure 2 A schematic cross-sectional view of the heat insulation component in an embodiment of this utility model is shown. Figure 2 ;

[0024] Figure 3 A schematic cross-sectional view of the heat insulation component in another embodiment of the present invention is shown. Figure 1 ;

[0025] Figure 4 A schematic cross-sectional view of the heat insulation component in another embodiment of the present invention is shown. Figure 2 ;

[0026] Figure 5 A cross-sectional schematic diagram of the heat insulation component in another embodiment of the present invention is shown;

[0027] Figure 6 A cross-sectional view of the heat insulation component in another embodiment of the present invention is shown. Figure 1 ;

[0028] Figure 7 A cross-sectional view of the heat insulation component in another embodiment of the present invention is shown. Figure 2 .

[0029] Symbol explanation: Inner sleeve 1; Outer sleeve 2; Heat absorption layer 3; Heat insulation layer 4; Heating element 5; Mirror reflection layer 6; Heat conduction layer 7. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0031] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0033] The term "aerosol-generating article" includes materials that provide volatile components when heated, and may include any tobacco-containing material, such as one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. "Aerosol-generating article" may also include other non-tobacco products that may or may not contain nicotine.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0035] Firstly, reference Figure 1 This utility model discloses a heat insulation component, including an inner sleeve 1, an outer sleeve 2, multiple heat insulation layers 4, and a heat-absorbing layer 3. The inner sleeve 1 forms a cavity for accommodating aerosol-generated products. The outer sleeve 2 is disposed on the outer periphery of the inner sleeve 1, forming a chamber between them. The multiple heat insulation layers 4 are sequentially spaced from the inside out within the chamber between the inner sleeve 1 and the outer sleeve 2. The innermost heat insulation layer 4 is bonded to the outer peripheral wall of the inner sleeve 1, and the outermost heat insulation layer 4 is bonded to the inner peripheral wall of the outer sleeve. The heat-absorbing layer 3 is disposed between two adjacent heat insulation layers 4.

[0036] In existing technologies, the thermal insulation effect of the heating core area of ​​smoking devices is poor. The inventors aimed to improve the existing technology and enhance its thermal insulation performance. Research revealed the existence of composite armor structures in tank protection technology. Compared to ordinary homogeneous armor, within the same protective thickness, a combination of multiple materials such as ceramics, metals, and fiberglass can achieve a superior protective effect compared to homogeneous armor made of single steel. Based on this, the inventors conceived of designing a multi-turn thermal insulation structure with composite layers in the thermal insulation components of the smoking device, resulting in the aforementioned technical solution. Furthermore, the aforementioned thermal insulation component exhibits excellent thermal insulation performance.

[0037] In the aforementioned thermal insulation assembly, the inner sleeve 1 has a cavity inside that can accommodate the aerosol-generated product. For example, refer to... Figures 1-5 The heating element 5 can be, for example, a heating tube, which can be disposed on the inner side wall of the inner sleeve 1. The heating tube heats the aerosol to generate the product, and the interior of the inner sleeve 1 is the core heating area. In other embodiments, such as Figure 6 and Figure 7 As shown, the heating element 5 can also be a heating needle, located within the receiving cavity of the inner sleeve 1. The heating needle heats the aerosol within the receiving cavity to generate the product, while the interior of the inner sleeve 1 remains the core heating area. As the core heat source, the heating element has a very large temperature difference with the outer shell of the smoking device (the temperature difference can reach over 200~300℃), possessing strong heat transfer potential. By attaching insulation layers 4 to both the outer peripheral wall of the inner sleeve 1 and the inner peripheral wall of the outer sleeve 2, the insulation layers 4 can reduce the heat conduction velocity, forming a heat conduction barrier and reducing the diffusion of heat from the core heating area inside the inner sleeve to the outside. Multiple layers of insulation layers 4 and heat-absorbing layers 3 are also provided within the cavity between the inner sleeve 1 and the outer sleeve 2, with the insulation layers 4 and heat-absorbing layers 3 arranged alternately to form a multi-layered heat insulation structure with a composite sandwich. The heat-absorbing layers 3 located between adjacent insulation layers 4 can actively absorb excess local heat, reducing the temperature rise and resulting in good overall heat insulation performance.

[0038] Furthermore, the aforementioned multi-layered, multi-turn composite structure can be compared to transforming a vertical waterfall into a multi-stage dam and multi-stage reservoir, a type of water conservancy facility that can prevent flooding during the rainy season and regulate water volume during the dry season. Correspondingly, in the aforementioned heat insulation component of this invention, the heat insulation layer 4 functions similarly to a dam, blocking heat transfer; the heat-absorbing layer 3 functions similarly to a reservoir, slowing down temperature fluctuations. Due to the presence of the heat-absorbing layer 3, after the first heating cycle of the smoke device, the heat-absorbing layer 3 accumulates a certain amount of heat, which can slow down the rate of temperature decrease in the core heating area. During continuous heating and smoking of the smoke device, the heat stored in the heat-absorbing layer 3 can provide residual heat for subsequent aerosol generation products, significantly shortening the thermal start-up and thermal response time of the subsequent aerosol generation products, thus improving the thermal start-up speed.

[0039] In addition, the above-mentioned thermal insulation components have a simple overall structure and can be assembled by stacking different layers in sequence. There is no need for complex connection structures between different layers, resulting in high processing and assembly efficiency.

[0040] Furthermore, in the above embodiments, reference is made to... Figure 2 , Figure 6 and Figure 7 The insulation layer 4 is an insulation tube, and the heat absorption layer 3 is a heat absorption tube, with the heat absorption tube nested between two adjacent insulation tubes. By setting both the insulation layer 4 and the heat absorption layer 3 as tubular structures, the insulation and heat absorption performance of the insulation component can be evenly distributed along the circumference of the insulation component, forming a comprehensive closed annular thermal barrier that completely blocks heat transfer and maximizes the thermal insulation effect within a limited radial space.

[0041] Furthermore, in the above embodiments, the thermal conductivity of the thermal insulation material of the thermal insulation layer 4 is 0-0.1 W / (m•K), and the specific heat capacity of the thermal absorption material of the heat absorption layer 3 is 1000-2000 J / (kg•K), which can further be 1200-2000 J / (kg•K). Exemplarily, the thermal insulation layer 4 can be made of a material with low thermal conductivity and low specific heat capacity, such as silica aerogel or air. As shown in Table 1, the thermal conductivity of silica aerogel is 0.02 W / (m•K), and its specific heat capacity is 800 J / (kg•K); the thermal conductivity of air is 0.026 W / (m•K), and its specific heat capacity is 1005 J / (kg•K). The heat-absorbing material of the heat-absorbing layer 3 can be a material with low thermal conductivity and high specific heat capacity, as shown in Table 1. For example, the heat-absorbing material can be silicone rubber / epoxy resin + ceramic particles (such as Al2O3), with a thermal conductivity of 0.2-0.8 W / (m•K) and a specific heat capacity of 1200-1800 J / (kg•K); or it can be a cellulose foam / coconut shell fiber composite material, with a thermal conductivity of 0.04-0.06 W / (m•K) and a specific heat capacity of 1500-2000 J / (kg•K).

[0042] Table 1 Thermal conductivity and specific heat capacity at constant pressure of insulation and heat-absorbing materials

[0043]

[0044] Furthermore, in the above embodiments, the number of heat-absorbing layers 3 is 3-5 layers.

[0045] Furthermore, in the above embodiments, the thickness of the heat insulation layer 4 ranges from 0.5 to 2 mm, the thickness of the heat absorption layer 3 ranges from 0.5 to 2 mm, and the thickness ratio of the heat insulation layer 4 to the heat absorption layer 3 can be 1:1.

[0046] This configuration, with its multiple layers of spaced heat-absorbing layer 3 and heat-insulating layer 4 sequentially absorbing and insulating heat, further enhances the thermal insulation effect of the insulation component. Furthermore, controlling the thicknesses of the heat-insulating layer 4 and heat-absorbing layer 3 within the aforementioned ranges allows for more efficient functional synergy, further strengthening the thermal insulation effect. Simultaneously, it allows for control of the overall thickness of the multiple layers of spaced heat-absorbing layer 3 and heat-insulating layer 4, facilitating assembly, balancing material usage across different layers, and helping to control costs.

[0047] Furthermore, in a specific embodiment, the thickness of the heat insulation layer 4 can be 1 mm, and the thickness of the heat absorption layer 3 can be 1 mm.

[0048] Furthermore, in the above embodiments, reference is made to... Figure 3The thermal insulation component also includes a mirror reflective layer 6, which is disposed between two adjacent thermal insulation layers 4.

[0049] In heated non-combustible cigarette devices, when the aerosol is heated by a heating element to produce the product, there are three main ways of heat conduction: heat conduction, heat convection, and heat radiation. By setting multiple layers of mirror-reflective layers 6 around the heating element, the mirror-reflective layers 6 can reflect the energy of heat radiation with their smooth mirror surface, reflecting the heat back into the interior of the heating area, reducing heat loss, and thus optimizing the heat insulation measures.

[0050] In one specific embodiment, there may be both a mirror-reflective layer 6 and a heat-absorbing layer 3 between two adjacent heat insulation layers 4, and the heat-absorbing layer 3 and the mirror-reflective layer 6 are arranged in sequence from the inside to the outside along the radial direction of the heat insulation component between two adjacent heat insulation layers 4; or the mirror-reflective layer 6 and the heat-absorbing layer 3 are arranged in sequence from the inside to the outside along the radial direction of the heat insulation component between two adjacent heat insulation layers 4.

[0051] Furthermore, in the above embodiments, reference continues to be made to... Figure 3 A heat-absorbing layer 3 is provided on the side of the mirror-reflective layer 6 near the inner sleeve, and a heat-insulating layer 4 is provided on the side of the mirror-reflective layer 6 near the outer sleeve.

[0052] For example, the thickness of the mirror reflective layer 6 is in the range of 0.2 to 1.0 mm, and can be further between 0.2 and 0.5 mm. The thickness ratio of the heat insulation layer 4, the heat absorption layer 3 and the mirror reflective layer 6 can be 1:1:0.4 (or 5:5:2).

[0053] Through the combined action of the three composite structures—insulation layer 4, heat absorption layer 3, and mirror reflection layer 6—the insulation layer 4 reduces the heat conduction rate, the heat absorption layer 3 absorbs excess heat, and the mirror reflection layer 6 reflects heat back to the heat absorption layer 3, allowing the heat absorption layer 3 to further absorb heat. This enhances the thermal insulation effect, ensuring that the heat overflowing to the outer shell of the smoke appliance remains within a controllable range, preventing the shell temperature from becoming excessively high. Furthermore, by controlling the thicknesses of the insulation layer 4, heat absorption layer 3, and mirror reflection layer 6 within the aforementioned ranges, heat absorption is further enhanced, further improving the thermal insulation effect. The overall thickness of the composite structure is also relatively thin, facilitating assembly and helping to control costs.

[0054] Furthermore, in the above embodiments, reference is made to... Figure 4 The insulation layer 4 is an insulation tube, the mirror reflection layer 6 is a mirror reflection tube, and the heat absorption layer 3 is a heat absorption tube. The mirror reflection tubes are nested between adjacent heat absorption tubes and insulation tubes. This arrangement can reflect heat radially transferred to the mirror reflection layer 6 in all directions, further enhancing the thermal insulation effect of the insulation component.

[0055] Furthermore, in the above embodiments, the surface roughness of the mirror reflection layer 6 is no greater than 0.1 micrometers, and more specifically, the surface roughness of the mirror reflection layer 6 is between 0 and 0.1 micrometers.

[0056] For example, the surface roughness Ra of the mirror reflective layer 6 can be controlled by processes such as grinding, polishing, or rolling, or it can be formed by vacuum plating, chemical plating, etc. By controlling the surface roughness Ra of the mirror reflective layer 6 to be below 0.1 μm, a mirror reflection effect of more than 90% can be achieved, thereby ensuring that most of the heat can be reflected and increasing the thermal insulation effect. The material of the mirror reflective layer 6 can be metal, which can be a metal suitable for processes such as vacuum plating and chemical plating, and is not limited thereto, such as copper, silver, aluminum, etc.

[0057] Furthermore, in the above embodiments, when the heat insulation component includes a mirror-reflective layer 6, the number of layers of the mirror-reflective layer 6 is 2-5, and the number of layers of the heat-absorbing layer 3 is 2-5. This arrangement, through the repeated multi-turn structure, further enhances the heat insulation effect, ensuring that the temperature overflowing to the outer shell is within a controllable range. It also allows for control of the overall thickness of the mirror-reflective layer 6, the heat insulation layer 4, and the heat-absorbing layer 3 between the inner sleeve 1 and the outer sleeve 2 of the heat insulation component, avoiding excessive space occupation by the heat insulation component and contributing to the miniaturization of the smoking device. Figure 3 and Figure 4 In the illustrated embodiment, the heat-absorbing layer 3 has two layers, and the mirror-reflecting layer 6 also has two layers.

[0058] Furthermore, in the above embodiments, reference is made to... Figure 5 The thermal insulation component also includes a thermally conductive layer 7, which is disposed between two adjacent thermal insulation layers 4.

[0059] For example, the thickness of the heat-conducting layer 7 ranges from 0.2 to 2 mm, and can be further 1 mm thick. The thickness ratio of the heat insulation layer 4, the heat absorption layer 3 and the heat-conducting layer 7 can be 1:1:1.

[0060] The temperature distribution of the heating element itself is not completely uniform; there may be a situation where the temperature in the middle is very high, but the temperature at both ends is very low. Correspondingly, the temperature distribution in the heating core area inside the inner sleeve 1 will also be uneven, resulting in uneven heat transfer and a temperature gradient in the radial direction of the insulation component. By setting the heat-conducting layer 7, the heat conduction speed can be accelerated, allowing heat to be transferred more evenly to the heat-absorbing layer 3, thus helping to accelerate the heat absorption rate of the heat-absorbing layer 3. Furthermore, by controlling the thicknesses of the insulation layer 4, the heat-absorbing layer 3, and the heat-conducting layer 7 within the aforementioned ranges, the synergistic effect of heat transfer and heat absorption is further enhanced, further improving the thermal insulation effect. The overall thickness of the composite structure is also relatively thin, facilitating assembly and helping to control costs.

[0061] In one specific embodiment, there may be both a heat-conducting layer 7 and a heat-absorbing layer 3 between two adjacent heat insulation layers 4, and the heat-absorbing layer 3 and the heat-conducting layer 7 are arranged in the radial direction of the heat insulation component from the inside to the outside between two adjacent heat insulation layers 4; or the heat-conducting layer 7 and the heat-absorbing layer 3 are arranged in the radial direction of the heat insulation component from the inside to the outside between two adjacent heat insulation layers 4.

[0062] Furthermore, in the above embodiments, reference continues to be made to... Figure 5 The heat-conducting layer 7 has a heat insulation layer 4 on the side near the inner sleeve, and a heat-absorbing layer 3 on the side near the outer sleeve 2. This arrangement ensures that during heat transfer, a portion of the heat is first blocked by the heat insulation layer 4, and then the excess heat is quickly and evenly conducted to the heat-absorbing layer 3 via the heat-conducting layer 7. The heat-absorbing layer 3 then absorbs the excess heat, resulting in better heat absorption and enhanced thermal insulation performance.

[0063] Furthermore, in the above embodiments, a mirror-reflective layer 6, a heat-conducting layer 7, and a heat-absorbing layer 3 can be simultaneously provided between two adjacent heat insulation layers 4, and the arrangement order of the three can be arbitrarily changed. Preferably, along the radial direction of the heat insulation component from the inside to the outside, the heat-conducting layer 7, the heat-absorbing layer 3, and the mirror-reflective layer 6 are arranged sequentially between two adjacent heat insulation layers 4, that is, the heat-absorbing layer 3 is outside the heat-conducting layer 7, and the mirror-reflective layer 6 is outside the heat-absorbing layer 3. Exemplarily, the thickness ratio of the heat insulation layer 4, the heat-conducting layer 7, the heat-absorbing layer 3, and the mirror-reflective layer 6 can be 1:1:1:0.4 (or 5:5:5:2).

[0064] With this configuration, when heat is transferred from the inside of the insulation component to the outside, a portion of the heat is first blocked by the insulation layer 4, and then the excess heat is quickly and evenly conducted to the heat-absorbing layer 3 through the heat-conducting layer 7. The heat that the heat-absorbing layer 3 does not fully absorb can be reflected inward by the mirror reflection layer 6, so that the heat-absorbing layer 3 absorbs more heat, hinders the heat from being transferred outward, and further enhances the heat insulation effect.

[0065] Furthermore, in the above embodiments, the heat insulation layer 4 is a heat insulation pipe, the heat conducting layer 7 is a heat conducting pipe, and the heat absorbing layer 3 is a heat absorbing pipe, with the heat conducting pipe nested between adjacent heat insulation pipes and heat conducting pipes. This arrangement allows the heat conducting layer 7 to conduct heat in all directions, resulting in more uniform heat transfer.

[0066] Furthermore, in the above embodiments, when the heat insulation component includes a heat-conducting layer 7, the number of layers of the heat-conducting layer 7 is 2-5, and the number of layers of the heat-absorbing layer 3 is 2-5. This arrangement further enhances the heat insulation effect, ensures that the temperature overflowing to the outer shell is within a controllable range, and also controls the overall thickness of the heat-conducting layer 7, the heat insulation layer 4, and the heat-absorbing layer 3 between the inner sleeve 1 and the outer sleeve 2 of the heat insulation component, which contributes to the miniaturization of the smoking device. Figure 5In the illustrated embodiment, the heat-absorbing layer 3 has two layers, the heat-conducting layer 7 also has two layers, and a mirror reflection layer 6 is further provided, which also has two layers.

[0067] Furthermore, in the above embodiments, the thermal conductivity of the heat-conducting layer 7 is not less than 3000 W / (m·K) to transfer heat more evenly to the heat-absorbing layer 3. For example, the thermally conductive material of the heat-conducting layer 7 can be graphene, which has a thermal conductivity of 3000~5000 W / (m·K).

[0068] Furthermore, in the above embodiments, the heat-absorbing layer 3 can be a copper-water heat pipe. The copper-water heat pipe has a thermal conductivity of 10000 W / (m·K) and a specific heat capacity of not less than 4000 J / (kg·K), possessing both heat conduction and heat absorption functions. When a copper-water heat pipe is used as the heat-absorbing layer 3, there is no need to separately set up a heat-conducting layer 7; that is, between two adjacent insulation layers 4, there is only a copper-water heat pipe, or only a copper-water heat pipe and a mirror reflective layer 6. This arrangement not only ensures the thermal insulation performance of the insulation component but also helps to achieve miniaturization of the insulation component.

[0069] Furthermore, in the above embodiments, the heat insulation component of this utility model is applicable to various heating methods such as peripheral heating and inner core heating. The functional layers, including the heat insulation layer 4, heat absorption layer 3, mirror reflection layer 6, and heat conduction layer 7, can be arranged and combined in various ways to further optimize the heat insulation effect. In addition, the number of layers (heat insulation layer 4, heat absorption layer 3, mirror reflection layer 6, and heat conduction layer 7) can be set according to actual needs, for example, by selecting the appropriate number of layers based on the size of the internal space of the smoking device.

[0070] In the above embodiments of this utility model, the heat insulation component is designed as a multi-turn heat insulation structure with a composite sandwich layer. Through a combination of one or more materials with different thermal conductivity, specific heat capacity, and reflectivity, specifically, by using materials with low thermal conductivity, the heat conduction rate can be reduced; by using materials with high specific heat capacity, the temperature rise is reduced when absorbing the same amount of heat; and by using a mirror-reflective layer 6 with a smooth surface to reflect heat, reducing radiation from the inside out, the heat transfer rate can be reduced, the temperature of the heating core area can be maintained, the heat insulation performance can be improved, and the temperature of the smoking device shell can be reduced. By arranging it in a multi-layered, multi-turn composite form, the above-mentioned heat insulation effect can be further enhanced. Simultaneously, due to the presence of heat-absorbing materials with high specific heat capacity, the heat-absorbing layer 3 of the above-mentioned heat insulation component can also store a portion of heat. During continuous smoking, this can reduce the thermal response time of the second cigarette and increase the heating rate of the smoking device.

[0071] Secondly, embodiments of the present invention provide an aerosol generating device, including the heat insulation component in any of the embodiments of the first aspect.

[0072] The aerosol generating device of this invention, employing the above-described technical solution, incorporates a heat insulation component. By setting multiple layers of heat insulation and heat absorption layers within the cavity between the inner and outer sleeves, and alternating between these layers, the heat insulation layer reduces the heat conduction rate, minimizing heat diffusion from the heating core area to other components within the aerosol generating device. The heat absorption layer, positioned between adjacent heat insulation layers, actively absorbs excess local heat, reducing the temperature rise. Simultaneously, the heat absorption layer stores some heat. When continuous heating of the aerosol-generated product is required, the stored heat can provide residual heat for subsequent aerosol-generated products, significantly shortening the thermal start-up and thermal response time of subsequent aerosol-generated products, resulting in excellent overall heat insulation performance. Furthermore, the aforementioned heat insulation component has a simple structure, facilitating processing and assembly into the aerosol generating device.

[0073] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A thermal insulation component, characterized in that, include: Inner sleeve, the interior of which forms a receiving cavity for accommodating aerosol-generated products; An outer sleeve is disposed on the outer periphery of the inner sleeve, forming a cavity between the outer sleeve and the inner sleeve; Multiple insulation layers are arranged sequentially from the inside to the outside in the cavity between the inner sleeve and the outer sleeve. The innermost insulation layer is attached to the outer peripheral wall of the inner sleeve, and the outermost insulation layer is attached to the inner peripheral wall of the outer sleeve. The heat-absorbing layer is located between two adjacent insulation layers.

2. The thermal insulation component as described in claim 1, characterized in that, The heat insulation layer is a heat insulation pipe, the heat absorption layer is a heat absorption pipe, and the heat absorption pipe is nested between two adjacent heat insulation pipes.

3. The thermal insulation component as described in claim 1, characterized in that, It also includes a specular reflective layer, which is disposed between two adjacent heat insulation layers.

4. The thermal insulation component as described in claim 3, characterized in that, A heat-absorbing layer is provided on the side of the mirror-reflective layer near the inner sleeve, and a heat-insulating layer is provided on the side of the mirror-reflective layer near the outer sleeve.

5. The thermal insulation component as described in claim 4, characterized in that, The heat insulation layer is a heat insulation tube, the mirror reflection layer is a mirror reflection tube, the heat absorption layer is a heat absorption tube, and the mirror reflection tube is nested between adjacent heat absorption tubes and heat insulation tubes.

6. The thermal insulation component as described in claim 3, characterized in that, The surface roughness of the mirror reflective layer is no greater than 0.1 micrometers.

7. The thermal insulation component as claimed in claim 1, characterized in that, It also includes a heat-conducting layer, which is disposed between two adjacent heat insulation layers.

8. The thermal insulation component as described in claim 7, characterized in that, The heat-conducting layer has a heat-insulating layer on the side near the inner sleeve and a heat-absorbing layer on the side near the outer sleeve.

9. The thermal insulation component as claimed in claim 8, characterized in that, The heat insulation layer is a heat insulation pipe, the heat conduction layer is a heat conduction pipe, the heat absorption layer is a heat absorption pipe, and the heat conduction pipe is nested between adjacent heat insulation pipes and heat conduction pipes.

10. An aerosol generating device, characterized in that, Includes the thermal insulation component as described in any one of claims 1-9.

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