A 3D irregularly shaped vacuum insulation box

Abstract

A 3D irregularly shaped vacuum insulation box is disclosed. The box comprises, from top to bottom, an inner liner layer, a first heat-insulating layer, a supporting layer, and a second heat-insulating layer. The box is equipped with an exhaust channel that connects at least the inner liner layer and the supporting layer, and includes at least one auxiliary exhaust device with an exhaust port and a ducting structure extending into the layers of the box. This multi-layered structure effectively blocks heat conduction, convection, and radiation, giving the box high barrier properties, low thermal conductivity, and high-temperature resistance. Simultaneously, the stacking of metal and non-metal layers significantly increases the overall mechanical strength of the box, ensuring its long-term reliability. Furthermore, the box can be customized in shape according to different application requirements, and shelves of different sizes can be installed on it to achieve a higher internal volume to external volume ratio, meeting diverse usage scenarios.

Description

Technical Field

[0001] This application relates to the field of vacuum insulation technology, and mainly to a 3D irregularly shaped vacuum insulation box. Background Technology

[0002] The efficient use and conservation of energy has become a global focus, and heat transfer control technology plays a crucial role in many fields. Whether in building insulation, heat insulation of household appliances such as refrigerators, or thermal management of industrial equipment, effective insulation measures can significantly reduce energy consumption and improve the overall performance of the system. The basic modes of heat transfer are heat conduction, heat convection, and heat radiation. Vacuum is one of the most effective ways to block heat conduction and heat convection. Furthermore, by rationally designing the materials and structure of vacuum insulation devices, the impact of heat radiation can be effectively reduced, thereby achieving highly efficient insulation.

[0003] Vacuum insulation chambers typically consist of an outer shell and a core material, and the choice of their structure and materials plays a decisive role in their insulation performance. Traditional vacuum insulation devices can be broadly categorized into two types based on the outer shell material and internal filling material. One type uses a metal outer shell with little or no internal core material to form a vacuum chamber, such as a thermos flask. This structure is heat-resistant and has high mechanical strength, but its edges have a higher heat transfer rate, resulting in less than ideal insulation performance. The other type uses a non-metallic outer shell with an internal core material to form a porous vacuum chamber, such as a vacuum insulation panel (VIP). While this provides better insulation, it suffers from insufficient mechanical strength and generally lower reliability, making it unsuitable for applications requiring high strength and reliability. These drawbacks limit the application of vacuum insulation devices in a wider range of fields, especially in situations requiring high strength, high temperature resistance, excellent insulation performance, and customizable irregular structures.

[0004] In summary, optimizing material and structural design to achieve a balance between thermal insulation and mechanical properties has become a key bottleneck that urgently needs to be overcome in the field of vacuum insulation technology. Therefore, developing a vacuum insulation enclosure that combines excellent thermal insulation, high strength, and high reliability can not only effectively compensate for the shortcomings of traditional technologies but also inject strong momentum into expanding vacuum insulation technology to a wider range of applications, providing a more efficient and reliable innovative solution. Utility Model Content

[0005] To address the technical problem that existing vacuum insulation boxes struggle to balance thermal insulation and mechanical properties, this application proposes a 3D irregularly shaped vacuum insulation box to solve the aforementioned technical problem.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A 3D irregularly shaped vacuum insulation box includes, from top to bottom, an inner liner layer, a first heat-insulating layer, a supporting layer, and a second heat-insulating layer; the 3D irregularly shaped vacuum insulation box is provided with an air extraction channel; the air extraction channel forms a gas passage between at least the inner liner layer and the supporting layer, so that the layers with gas communication achieve the same vacuum; at least one air extraction auxiliary device is provided on the air extraction channel, and the air extraction auxiliary device is provided with an air extraction port and a gas guiding structure extending into the interior of the layers of the 3D irregularly shaped vacuum insulation box.

[0008] This 3D irregularly shaped vacuum insulation enclosure features an inner liner layer, a first heat-insulating layer, a support layer, and a second heat-insulating layer arranged sequentially from top to bottom. Equipped with an air extraction channel and auxiliary air extraction device, it not only possesses stable thermal insulation performance but also high mechanical strength, achieving a good balance between thermal insulation and mechanical properties. The inner liner layer provides basic thermal insulation space, the first and second heat-insulating layers further block heat transfer, and the support layer enhances the enclosure's mechanical strength, enabling it to withstand external pressure and impact. Simultaneously, the air extraction channel and auxiliary air extraction device effectively create a vacuum inside the enclosure. The air extraction port and air guiding structure of the auxiliary air extraction device ensure efficient air extraction, quickly achieving the required vacuum level, allowing the enclosure to deliver excellent thermal insulation performance in various application scenarios.

[0009] Preferably, the upper surface of the inner liner or the side surface of the support layer is provided with a cover for the air extraction channel. The cover can effectively seal the air extraction channel and maintain the vacuum state inside the entire box, extending the heat insulation effect and service life of the box. When the inner liner is not suitable for a cover due to appearance or other special requirements, the cover for the air extraction channel can be set on the side of the support layer, and other supporting structures only need to be changed in connection position and method accordingly.

[0010] Preferably, the air extraction auxiliary device includes a cylindrical body component and a disc-shaped extension component connected to the upper and lower ends of the body component. The body component is in contact with the channel wall of the air extraction channel. An air extraction port is provided on the body component, and an air guiding structure is provided on the extension component.

[0011] The entire vacuuming auxiliary device can be divided into two connectable upper and lower parts, installed from the upper and lower sides of the insulation core material respectively. The vacuum port located on the main body and the air guiding structure on the extension part ensure smooth gas passage through the insulation core material and rapid discharge from the inner liner or insulation board, reducing gas resistance and detours during discharge, thus reducing the time required for vacuuming and quickly achieving the desired vacuum level. Simultaneously, the air guiding structure effectively guides gas to be discharged evenly from various locations, avoiding insufficient or excessive vacuum in certain areas, ensuring uniform vacuum distribution in the inner liner or insulation board, preventing structural deformation caused by uneven local pressure during vacuuming, and protecting the structural integrity of the inner liner or insulation board and the performance of the insulation core material. Furthermore, during vacuuming, the rapid flow of gas may cause mechanical impact on the insulation core material; the air guiding structure guides the gas to flow smoothly, reducing the impact on the insulation core material and protecting its structure and performance.

[0012] Preferably, the inner liner layer includes an inner liner panel and an insulating bottom shell from top to bottom. The inner liner panel and the insulating bottom shell together form an inner liner insulating chamber, which is filled with an insulating core material.

[0013] By filling the inner liner with insulating core material, the insulating chamber effectively blocks heat conduction and reduces heat transfer through the inner liner layer. In specific embodiments, both the inner liner panel and the insulating bottom shell can be made of metal materials such as stainless steel, aluminum alloy, or carbon steel, or other metal or non-metal materials can be selected according to actual application needs. Using metal materials for the inner liner layer can significantly improve the mechanical strength, thermal conductivity (ensuring uniform temperature and eliminating local temperature differences), high-temperature resistance, processing and forming performance, airtightness, and corrosion resistance of the cabinet, enabling the cabinet to meet the needs of various complex application scenarios and providing efficient and reliable thermal insulation and structural support. In addition, the inner liner layer can be designed into a 3D irregular structure to meet usage requirements; shelves of different sizes can also be customized on the outer surface of the inner liner panel to increase storage space; and an additional decorative or functional inner liner can be added, with the support of the metal inner liner providing sufficient load-bearing capacity. Non-metallic materials typically have lower thermal conductivity, and using them for the inner liner can more effectively block heat conduction. Furthermore, since many non-metallic materials have a much lower density than metallic materials, using them for the inner liner can significantly reduce the overall weight of the enclosure, making it more suitable for applications with strict weight requirements. In addition, some non-metallic materials have excellent chemical corrosion resistance, resisting the erosion of various acids, alkalis, salts, and other chemicals, making them particularly suitable for use in corrosive environments. Suitable non-metallic materials include polyamide, glass fiber reinforced plastics, multilayer co-extruded plastics, or blended plastics.

[0014] Preferably, when the first heat-insulating layer and the second heat-insulating layer are both independent and complete vacuum insulation panels, the air extraction channel forms a passage between the inner liner layer and the support layer, and the air extraction auxiliary device is disposed in the inner liner layer.

[0015] Using prefabricated vacuum insulation panels with independent and complete structures simplifies the assembly process, effectively shortens the production cycle, improves production efficiency, ensures quality control and reliability, reduces production costs, and adapts to various application scenarios. When the evacuation channel only connects the inner liner and the support layer, only an evacuation auxiliary device needs to be installed in the inner liner; the support layer does not require an evacuation auxiliary device for vacuuming.

[0016] More preferably, the air extraction channel is a continuous channel formed by through holes disposed on the inner liner layer, the first heat-insulating layer and the support layer.

[0017] Preferably, when both the first heat-insulating layer and the second heat-insulating layer are heat insulation boards, the air extraction channel forms a passage between the inner liner layer, the first heat-insulating layer, the support layer and the second heat-insulating layer, and the inner liner layer, the first heat-insulating layer and the second heat-insulating layer are respectively provided with the air extraction auxiliary device.

[0018] More preferably, the air extraction channel is a continuous channel formed by through holes disposed on the inner liner layer, the first heat-insulating layer and the support layer, and holes disposed on the second heat-insulating layer.

[0019] The inner liner, the first heat-insulating layer, and the second heat-insulating layer are each equipped with a vacuuming auxiliary device, which enables simultaneous vacuuming at multiple points, significantly reducing the time for gas discharge and improving the efficiency of vacuuming. At the same time, it can ensure that the vacuum degree in each layer is evenly distributed, so as to avoid insufficient or excessive vacuum degree in some areas, reduce structural deformation caused by uneven local pressure during vacuuming, and ensure the stability and reliability of the enclosure during use.

[0020] More preferably, the heat insulation board includes a heat insulation bottom shell, and the heat insulation board is filled with heat insulation core material or a supporting structure.

[0021] A first insulating chamber can be formed between the insulating bottom shell of the first heat-insulating layer and the insulating bottom shell of the inner liner layer, and a second insulating chamber can be formed between the insulating bottom shell of the second heat-insulating layer and the supporting bottom shell of the supporting layer. Both the first and second insulating chambers are filled with insulating core material or supporting structures. The insulating bottom shell can be made of non-metallic materials such as polyamide, glass fiber reinforced plastic, multi-layer co-extruded plastic, or blended plastic; when the vacuum insulated box is used in a high-temperature environment, the insulating bottom shell can also be made of metallic materials including stainless steel, aluminum alloy, or carbon steel.

[0022] By stacking the insulation panel with the inner liner and metal support layer, the heat conduction path can be effectively blocked, reducing the amount of heat transferred through the material. Simultaneously, the insulation panel, together with the inner liner and support layer, forms a unified multi-layer vacuum insulation structure. This structure effectively blocks heat conduction, convection, and radiation, significantly improving the overall insulation performance of the enclosure. Furthermore, when the inner liner is made of metal and the insulation panel is made of non-metallic materials, the non-metallic insulation panel typically possesses a certain degree of flexibility and cushioning properties. It can act as a buffer between the metal inner liner and the metal support layer, reducing direct contact and friction between the metal layers, further improving the structural stability and service life.

[0023] Preferably, the support layer comprises, from top to bottom, a support panel, a support component, and a support base shell. The internal spaces of the support layer are interconnected, allowing gas to flow freely between any two points within the internal space. The design of the upper and lower panels and the intermediate support component effectively disperses and withstands external pressure, enhancing the mechanical strength of the entire enclosure. Ensuring the interconnection of the internal spaces ensures that the entire support layer is in a vacuum state after evacuation, with a uniform vacuum distribution, preventing heat conduction through the support layer and thus improving the insulation effect.

[0024] More preferably, the supporting component is a grid structure; the grid structure includes multiple interlocking support bars, each support bar having multiple vent holes. The grid structure possesses high mechanical strength and stability, effectively providing support. The interlocking design of the support bars allows the grid structure's size to be adjusted as needed. The vent holes on the support bars ensure interconnectivity within the supporting layer, allowing gas to escape more quickly and improving vacuuming efficiency.

[0025] Compared to existing technologies, the beneficial effects of this application are as follows:

[0026] (1) The 3D irregular vacuum insulation box of this application adopts a multi-layer structure design of inner liner layer, first heat insulation layer, support layer and second heat insulation layer. Each layer has heat insulation function and can effectively block heat conduction, heat convection and heat radiation. This design not only achieves the characteristics of high barrier, low thermal conductivity and high temperature resistance, but also significantly improves the overall heat insulation effect of the box, so that the box can be widely used in various scenarios.

[0027] (2) The 3D irregular vacuum insulation box of this application uses an air extraction auxiliary device that can significantly reduce the time of gas discharge and improve the efficiency of vacuuming. At the same time, it can ensure that the vacuum degree in the layer is uniformly distributed, prevent structural deformation caused by local pressure unevenness during vacuuming, and further enhance the stability and reliability of the box.

[0028] (3) The 3D irregular vacuum insulation box of this application adopts the method of stacking metal layers and non-metal layers, which not only significantly improves the heat insulation performance, but also greatly increases the overall mechanical strength of the box. This design combines the high strength of metal materials and the heat insulation advantages of non-metal materials, ensuring that the box maintains a stable heat insulation effect during long-term use and has strong long-term reliability.

[0029] (4) The inner liner of the 3D irregular vacuum insulation box of this application can be designed into various 3D irregular structures according to the usage requirements, and different specifications of shelves can be customized on it, which not only improves the space utilization of the box, but also enables the box application objects to obtain a higher internal volume to external volume ratio, thus meeting diverse usage requirements. Attached Figure Description

[0030] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of this application. Other embodiments and many anticipated advantages of these embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0031] Figure 1 A structural diagram of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0032] Figure 2 A top view of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown;

[0033] Figure 3 A cross-sectional view of the AA section of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown;

[0034] Figure 4a A structural diagram of the air extraction auxiliary device for a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0035] Figure 4b A front view of the air extraction auxiliary device for a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown;

[0036] Figure 5a A schematic diagram of the inner liner layer of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0037] Figure 5b An exploded schematic diagram of the inner liner layer of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0038] Figure 6a A structural diagram of the first heat-insulating layer of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0039] Figure 6b A structural diagram of the second heat-insulating layer of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0040] Figure 7a A structural diagram of the support layer of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0041] Figure 7b An exploded schematic diagram of the support layer of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0042] Figure 7c A structural diagram of the support strip of a 3D irregularly shaped vacuum insulation box according to a specific embodiment of this application is shown.

[0043] Figure 8 An overall structural diagram of a 3D irregularly shaped vacuum insulation box according to another specific embodiment of this application is shown;

[0044] Figure 9 A top view of a 3D irregularly shaped vacuum insulation box according to another specific embodiment of this application is shown;

[0045] Figure 10 A BB-section cross-sectional view of a 3D irregularly shaped vacuum insulation box according to another specific embodiment of this application is shown;

[0046] Figure 11 An overall structural diagram of the first heat-insulating layer of a 3D irregularly shaped vacuum insulation box according to another specific embodiment of this application is shown.

[0047] Figure 12 An overall structural diagram of the second heat-insulating layer of a 3D irregularly shaped vacuum insulation box according to another specific embodiment of this application is shown;

[0048] Figure 13 An overall structural diagram of the support layer of a 3D irregularly shaped vacuum insulation box according to another specific embodiment of this application is shown.

[0049] The attached figures are labeled as follows:

[0050] 1-Inner liner layer, 2-First heat-insulating layer, 3-Support layer, 4-Second heat-insulating layer, 5-Sealing cap, 6-Extraction auxiliary device, 7-Extraction port, 8-Air guiding structure, 9-Inner liner panel, 10-Insulated bottom shell, 11-Inner liner layer insulation core material, 12-Extraction auxiliary device mounting port, 13-Support panel, 14-Support component, 15-Support bottom shell, 16-Support strip, 17-Ventilation hole, 18-First insulation bottom shell, 19-First extraction auxiliary device, 20-First insulation core material, 21-Second insulation bottom shell, 22-Second extraction auxiliary device, 23-Second insulation core material, 24-Ventilation port. Detailed Implementation

[0051] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the content are shown in the accompanying drawings.

[0052] Where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] Example 1

[0054] A 3D irregularly shaped vacuum insulation box Figure 1 This diagram shows the overall structure of the 3D irregularly shaped vacuum insulation box. Figure 2 This is a top view of the 3D irregularly shaped vacuum insulation box. Figure 3 This is a cross-sectional view of the AA section of the 3D irregularly shaped vacuum insulation box, in conjunction with reference. Figures 1-3 The 3D irregularly shaped vacuum insulation box includes, from top to bottom, an inner liner layer 1, a first heat-insulating layer 2, a support layer 3, and a second heat-insulating layer 4. The inner liner layer is made of metal material and has a cover 5. The cover can be connected by welding, gluing, or heat sealing. The air extraction channel is located under the cover. The first heat-insulating layer 2 and the second heat-insulating layer 4 are both vacuum insulation panels.

[0055] Specifically, the enclosure is equipped with an air extraction channel; the air extraction channel connects the inner liner layer 1 and the support layer 3; an air extraction auxiliary device 6 is installed in the inner liner section of the air extraction channel, and the structural design of the air extraction auxiliary device 6 can be referred to Figures 4a-4b ,like Figure 4a and Figure 4bAs shown, the vacuuming auxiliary device 6 is equipped with a vacuum port 7 and a venting structure 8 extending into the interior of the housing. In a specific embodiment, the venting structure 8 can be a venting groove. The vacuuming auxiliary device can be divided into upper and lower parts, which are installed from both sides of the insulation core material to form a complete vacuuming auxiliary device. In a specific embodiment, the extension component can also be a venting pipe directly connected to the body component. The venting pipe can extend flexibly within the layer to perform vacuuming work at specific complex points, improving the efficiency of vacuuming. Gas inside the inner liner or insulation board can directly enter the body component, i.e., the vacuuming channel, through the venting pipe.

[0056] In a specific embodiment, a vacuum-insulated chamber employing a vacuum-assisted device achieved a vacuum level below 1 Pa at its internal monitoring location. Even after 10 days of stabilization, the vacuum level at the monitoring location remained below 1 Pa. Under the same conditions, a chamber without a vacuum-assisted device may exhibit a vacuum level fluctuating between 1 and 10 Pa.

[0057] Figure 5a and Figure 5b These are, respectively, a schematic diagram of the overall structure and an exploded view of the inner liner 1 of the 3D irregularly shaped vacuum insulation box, for reference. Figure 5a and Figure 5b The inner liner 1 includes an inner liner panel 9 and an insulated bottom shell 10 from top to bottom. The inner liner panel 9 and the insulated bottom shell 10 together form the inner liner insulated chamber. The inner liner insulated chamber is filled with an inner liner insulated core material 11. The inner liner insulated core material 11 has an air extraction auxiliary device installation port 12. The air extraction auxiliary device 6 is installed in the air extraction auxiliary device installation port 12.

[0058] Figure 6a and Figure 6b These are schematic diagrams of the first heat-insulating layer 2 (vacuum insulation board) and the second heat-insulating layer 4 (vacuum insulation board) of the 3D irregularly shaped vacuum insulation box, respectively. Figure 6a As shown, the first heat-insulating layer 2 has an air extraction channel.

[0059] Figure 7a and Figure 7b The diagram shows the overall structure and exploded view of the support layer 3 of the 3D irregularly shaped vacuum insulation box. (Reference) Figure 7a and Figure 7b The support layer 3, from top to bottom, includes a support panel 13, a support component 14, and a support base shell 15, and the internal spaces of the support layer 3 are interconnected. The support component 14 is a grid structure, which includes multiple interlocking support bars 16. Each support bar 16 has multiple ventilation holes 17. The structure of this support bar is shown in the diagram below. Figure 7c As shown.

[0060] In specific embodiments, the grid structure includes square grids, circular grids, diamond grids, and hexagonal grids, which can be customized according to actual needs.

[0061] Example 2

[0062] A 3D irregularly shaped vacuum insulation box Figure 8 This diagram shows the overall structure of the 3D irregularly shaped vacuum insulation box. Figure 9 This is a top view of the 3D irregularly shaped vacuum insulation box. Figure 10 This is a BB section view of the 3D irregularly shaped vacuum insulation box, in conjunction with reference. Figures 8-10 The 3D irregularly shaped vacuum insulation box comprises, from top to bottom, an inner liner layer 1, a first heat-insulating layer 2, a support layer 3, and a second heat-insulating layer 4. The inner liner layer is made of metal and has a cover 5. Below the cover is an air extraction channel. Both the first heat-insulating layer 2 and the second heat-insulating layer 4 are heat-insulating panels made of non-metallic materials. The cover can be connected by welding, gluing, or heat sealing.

[0063] Specifically, the inner liner 1 of this 3D irregularly shaped vacuum insulation box has the same structure as the inner liner 1 in Embodiment 1, which can be referred to as... Figure 5a and Figure 5b The inner liner 1 includes an inner liner panel 9 and an insulated bottom shell 10 from top to bottom. The inner liner panel 9 and the insulated bottom shell 10 together form the inner liner insulated chamber. The inner liner insulated chamber is filled with an inner liner insulated core material 11. The inner liner insulated core material 11 has an air extraction auxiliary device installation port 12. The air extraction auxiliary device 6 is installed in the air extraction auxiliary device installation port 12.

[0064] Figure 11 This is a structural diagram of the first heat-insulating layer 2 of the 3D irregularly shaped vacuum insulation box, as shown below. Figure 11 As shown, the first heat-insulating layer 2 includes a first heat-insulating bottom shell 18, a first air extraction auxiliary device 19, and a first heat-insulating core material 20. Figure 13 This is a structural diagram of the second heat-insulating layer 4 of the 3D irregularly shaped vacuum insulation box, as shown below. Figure 12 As shown, the second heat-insulating layer 4 includes a second heat-insulating bottom shell 21, a second air extraction auxiliary device 22, and a second heat-insulating core material 23. The second non-metallic bottom shell 21 is provided with a plurality of circular air vents 24.

[0065] Figure 13 This is a schematic diagram of the overall structure of the support layer 3 of the 3D irregularly shaped vacuum insulation box, for reference. Figure 13The support layer 3 includes a support panel 13, a support component 14, and a support base shell 15, with interconnected internal spaces. The support component 14 is the same as in Embodiment 1. However, unlike Embodiment 1, both the support panel 13 and the support base shell 15 of this support layer 3 have multiple openings corresponding to the vents 24 of the first non-metallic base shell 18. Through these openings, gases within the first heat-insulating layer, the support layer, and the second heat-insulating layer can circulate, forming multiple interconnected gas channels. This structure not only optimizes the gas flow path and reduces resistance during gas discharge, but also ensures a uniform vacuum distribution within each layer during vacuuming, significantly improving vacuuming efficiency.

[0066] In other embodiments, the first heat-insulating layer 2 and the second heat-insulating layer 4 of the 3D irregularly shaped vacuum insulation box can be adjusted as needed.

[0067] Specifically, a 3D irregularly shaped vacuum insulation box includes, from top to bottom, an inner liner layer 1, a first heat-insulating layer 2, a supporting layer 3, and a second heat-insulating layer 4. The first heat-insulating layer 2 is a finished vacuum insulation board with an independent and complete structure, and the second heat-insulating layer 4 is a heat insulation board. An air extraction channel connects the inner liner layer 1, the supporting layer 3, and the second heat-insulating layer 4. An air extraction auxiliary device is provided inside the inner liner layer 1 and the second heat-insulating layer 4.

[0068] In other embodiments, a 3D irregularly shaped vacuum insulation box includes, from top to bottom, an inner liner layer 1, a first heat-insulating layer 2, a supporting layer 3, and a second heat-insulating layer 4. The first heat-insulating layer 2 is a heat insulation board, and the second heat-insulating layer 4 is a finished vacuum insulation board with an independent and complete structure. An air extraction channel connects the inner liner layer 1, the first heat-insulating layer 2, and the supporting layer 3. An air extraction auxiliary device is provided in the inner liner layer 1 and the first heat-insulating layer 2.

[0069] In other embodiments, the choice of materials for the inner liner and insulation panels exhibits great flexibility and diversity. They can be made of metallic materials, such as stainless steel, aluminum alloy, or carbon steel, to meet the requirements of high strength, high temperature resistance, and excellent thermal conductivity; or non-metallic materials, such as polyamide, glass fiber reinforced plastic, and polycarbonate, to achieve superior performance in terms of thermal insulation, lightweight design, and corrosion resistance. Regardless of the material selection based on the specific operating conditions, this vacuum insulation enclosure consistently maintains excellent thermal insulation performance. This superior performance does not solely rely on the properties of the materials themselves, but rather stems from its unique multi-layered structural design and the rational combination and synergistic effect between the materials at each layer, ensuring effective blocking of heat conduction, heat convection, and heat radiation, thus providing reliable thermal insulation performance in various complex application scenarios.

[0070] The specific embodiments of this application have been described above, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0071] In the description of this application, it should be understood that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and for simplification, 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. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that combinations of these measures cannot be used for improvement. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. A 3D shaped vacuum insulated box, characterized in that: The 3D irregularly shaped vacuum insulation box comprises, from top to bottom, an inner liner layer, a first heat-insulating layer, a supporting layer, and a second heat-insulating layer; the 3D irregularly shaped vacuum insulation box is provided with an air extraction channel; the air extraction channel forms a gas passage between at least the inner liner layer and the supporting layer, so that the layers with gas communication achieve the same vacuum; at least one air extraction auxiliary device is provided on the air extraction channel, and the air extraction auxiliary device is provided with an air extraction port and a gas guiding structure extending into the interior of the layers of the 3D irregularly shaped vacuum insulation box.

2. The 3D special-shaped vacuum insulated box of claim 1, wherein: The upper surface of the inner liner or the side surface of the support layer is provided with a cover for the air extraction channel.

3. The 3D special-shaped vacuum insulated box of claim 1, wherein: The air extraction auxiliary device includes a cylindrical body component and a disc-shaped extension component connected to the upper and lower ends of the body component. The body component is in contact with the channel wall of the air extraction channel. The body component is provided with the air extraction port, and the extension component is provided with the air guiding structure.

4. The 3D special-shaped vacuum insulated box of claim 1, wherein: The inner liner layer includes an inner liner panel and an insulated bottom shell from top to bottom. The inner liner panel and the insulated bottom shell together form an inner liner insulated chamber, which is filled with an insulated core material.

5. The 3D special-shaped vacuum insulated box of claim 1, wherein: When both the first heat-insulating layer and the second heat-insulating layer are independent and complete vacuum insulation panels, the air extraction channel forms a passage between the inner liner layer and the support layer, and the air extraction auxiliary device is disposed in the inner liner layer.

6. The 3D special-shaped vacuum insulated box of claim 5, wherein: The air extraction channel is a continuous channel formed by through holes disposed on the inner liner layer, the first heat-insulating layer and the support layer.

7. The 3D special-shaped vacuum insulated box of claim 1, wherein: When both the first heat-insulating layer and the second heat-insulating layer are heat insulation boards, the air extraction channel forms a passage between the inner liner layer, the first heat-insulating layer, the support layer and the second heat-insulating layer, and the inner liner layer, the first heat-insulating layer and the second heat-insulating layer are respectively provided with the air extraction auxiliary device.

8. The 3D special-shaped vacuum insulated box of claim 7, wherein: The air extraction channel is a continuous channel formed by through holes in the inner liner layer, the first heat-insulating layer and the supporting layer, and holes in the second heat-insulating layer.

9. The 3D special-shaped vacuum insulated box of claim 7, wherein: The heat insulation board includes a heat insulation bottom shell, and the heat insulation board is filled with heat insulation core material or a supporting structure.

10. The 3D-shaped vacuum insulated box of any one of claims 1-9, wherein: The support layer comprises, from top to bottom, a support panel, a support component, and a support base shell. The internal spaces of the support layer are interconnected, allowing gas to flow freely between any two points within the internal space of the support layer. The support component is a grid structure, which includes multiple interconnected support bars with multiple ventilation holes on each support bar.

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