Transparent vacuum insulated panel and refrigeration and thermal insulation device

Abstract

A transparent vacuum insulated panel and a refrigeration and thermal insulation device. The transparent vacuum insulated panel comprises: a core material (1), the core material (1) being a panel member (11) having a hollowed-out structure (12), and the hollowed-out structure (12) being distributed on the panel member (11) in an array; and a pouch (2), the pouch (2) being made of a transparent barrier membrane, and a vacuum cavity (21) for accommodating the core material (1) being provided in the pouch (2).

Description

Transparent vacuum insulation panels and refrigeration and heat preservation devices Cross-references to related applications

[0001] This disclosure claims priority to Chinese patent application No. 202423260429.2, filed on December 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of thermal insulation materials technology, and in particular to transparent vacuum insulation panels and refrigeration and heat preservation devices. Background Technology

[0003] Vacuum insulation panels are composed of a core material and a highly airtight barrier membrane. The barrier membrane forms a low-pressure containment space to house the core material, while the rigidity of the vacuum insulation panel itself resists atmospheric pressure, thus supporting this space. Because of the low pressure and fewer air molecules within the containment space, and because the core material impedes the movement of gas molecules, heat transfer caused by air convection is effectively prevented, significantly reducing the thermal conductivity. Vacuum insulation panels are widely used in cold chain equipment, building exterior wall insulation, refrigerated containers, and medical insulated boxes, among other fields.

[0004] The main component of a vacuum insulation panel is the core material. Barrier films are placed on both sides of the core material, primarily to keep water and gas out and protect it. Common core materials include granular, foam, fiber, and composite materials, which are typically not transparent. However, the opaque nature of the core material limits the application of vacuum insulation panels in products requiring transparency, such as wine cabinets and beverage coolers for displaying merchandise. Summary of the Invention

[0005] This disclosure provides a transparent vacuum insulation panel and a refrigeration and heat preservation device to solve the technical problem of making the vacuum insulation panel transparent.

[0006] In a first aspect, embodiments of this disclosure provide a transparent vacuum insulation panel, the transparent vacuum insulation panel comprising: a core material, the core material being a plate having a hollow structure, the hollow structure being arrayed on the plate; and a bag body, the bag body being made of a transparent barrier film, the bag body having a vacuum cavity for containing the core material.

[0007] Secondly, embodiments of this disclosure provide a refrigeration and heat preservation device, the device comprising the transparent vacuum insulation panel described in the first aspect. Attached Figure Description

[0008] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0009] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0010] Figure 1 is a schematic diagram of the structure of the vacuum insulation panel provided in this disclosure;

[0011] Figure 2 is a schematic diagram of the core material provided in Embodiment 1 of this disclosure.

[0012] Figure 3 is a schematic diagram of the structure of the transparent barrier film provided in this disclosure;

[0013] Figure 4 is a schematic diagram of the core material provided in Embodiment 2 of this disclosure.

[0014] Figure 5 is a schematic diagram of the core material provided in Embodiment 3 of this disclosure.

[0015] In the diagram: 1-core material, 12-perforated structure, 11-plate, 2-bag body, 21-vacuum chamber, 01-protective layer, 02-barrier layer. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0017] Various embodiments of this disclosure may be presented in range form. This description is intended to simplify the expression and not to limit the scope of this disclosure; therefore, it should be understood that the range description specifically discloses all possible subranges and single numerical values ​​within that range. For example, it should be understood that a range description from 1 to 6 specifically discloses subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within said ranges, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the referred range.

[0018] In this disclosure, unless otherwise stated, directional terms such as “upper” and “lower” specifically refer to the orientation of the figures in the accompanying drawings. Furthermore, in this specification, the terms “comprising” and “including” mean “including but not limited to”. In this document, relational terms such as “first” and “second” are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In this document, “and / or” describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone. A and B can be singular or plural. In this document, “at least one” means one or more, and “more” means two or more. “At least one,” “at least one of the following,” or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of a, b, or c" or "at least one of a, b, and c" can both represent: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple. In the proportional relationships discussed herein, parameters described by proportion should be understood as the first term of the proportion in the order of description, and the proportion number should be understood as the second term. For example, if the mass ratios of substances A, B, and C are 1, 2, and 3 respectively, that is, the mass of substance A corresponds to 1, the mass of substance B corresponds to 2, and the mass of substance C corresponds to 3, forming the proportion: mass of substance A : mass of substance B : mass of substance C = 1 : 2 : 3. Unless otherwise specified, all raw materials, reagents, instruments, and equipment used in this disclosure can be purchased commercially or prepared using existing methods.

[0019] Figure 1 is a schematic diagram of the structure of the vacuum insulation panel provided in this disclosure. As shown in Figure 1, in a first aspect, an embodiment of this disclosure provides a transparent vacuum insulation panel, which includes: a core material 1, wherein the core material 1 is a plate 11 having a hollow structure 12, the hollow structure 12 being arrayed on the plate 11; and a bag body 2, wherein the material of the bag body 2 is a transparent barrier film, and a vacuum cavity 21 for containing the core material 1 is provided inside the bag body 2.

[0020] The perforated structure 12 not only helps reduce the weight of the core material 1 but also effectively reduces heat conduction. Since air (or a vacuum) is a poor conductor of heat, this structure makes it difficult for heat to transfer through the core material 1, thus improving insulation performance. Simultaneously, the perforated structure 12 design also considers light transmittance, allowing light to pass through the perforated areas, ensuring good transparency of the entire transparent vacuum insulation panel. The bag body 2 uses a transparent barrier film as its material. This film not only has good transparency but also effectively prevents the penetration of gas and water molecules, thus maintaining the vacuum state within the vacuum chamber 21. The transparency ensures that the insulation panel does not block light during application, making it particularly suitable for applications requiring both insulation and light transmittance, such as architectural glass and display cases. The vacuum chamber 21 inside the bag body 2 further reduces the possibility of heat conduction and convection, significantly improving the insulation effect. The presence of the vacuum chamber 21 also allows for full utilization of the perforated structure 12 of the core material 1, as the extremely low thermal conductivity of air in a vacuum further enhances the insulation performance. This type of transparent vacuum insulation panel has broad application prospects in many fields, such as architectural glass, display cabinets, and refrigerated display cabinets. It not only improves the aesthetics and practicality of the products, but also promotes the development of related industries.

[0021] It is easy to understand that the air pressure inside the vacuum chamber 21 is very low. Under atmospheric pressure, the portion of the bag body 2 located in the hollow structure 12 will deform inward. The plate 11 can resist the pressure exerted on the bag body 2 by the atmosphere, preventing the bag body 2 from deforming excessively and maintaining the low air pressure state inside the vacuum chamber 21.

[0022] It is easy to understand that the main function of the transparent barrier film is to isolate the vacuum cavity 21 from the outside world and block water and gas. Traditional barrier films typically include a barrier layer 02 with strong barrier effect and a protective layer 01 disposed on the surface of the barrier layer 02, and the barrier layer 02 is usually made of a metallic material. In this disclosure, to achieve the transparency of the transparent barrier film, the barrier layer 02 can be made of a polymer material with strong barrier capabilities, such as PVA, EVOH, PVDC, etc. These materials have low transmittance coefficients and excellent barrier performance.

[0023] In this embodiment, a plate 11 with a perforated structure 12 is used as the core material 1. The perforated structure 12 is light-transmitting and is arrayed on the plate 11, making the core material 1 transparent as a whole. At the same time, the material of the bag body 2 is also a transparent barrier film. Since both the core material 1 and the bag body 2 are transparent, the transparent vacuum insulation board is also transparent.

[0024] In some embodiments of this disclosure, the hollow structure 12 is any one of a rectangle, parallelogram, triangle, or hexagon.

[0025] Clearly, rectangles, parallelograms, triangles, and hexagons can all be arranged closely to form a regular grid structure. To improve light transmittance, the perforated structures 12 should be arranged as densely as possible to maximize their area ratio on the core material 1. This embodiment of the disclosure achieves a transparent design for the vacuum insulation panel by proposing a core material 1 with a specific shaped perforated structure 12. On the one hand, by selecting geometric shapes such as rectangles, parallelograms, triangles, and hexagons as perforated structures 12, not only are the design styles of the core material 1 enriched, but the aesthetic and functional requirements of different application scenarios are also met. On the other hand, these geometric shapes have regular boundaries and internal spaces, which helps to minimize the use of materials while ensuring structural strength, thereby reducing the possibility of heat conduction and convection and improving insulation performance. On the third hand, by using a transparent barrier film as the material of the bag body 2 and combining it with these geometrically shaped perforated structures 12, the entire insulation panel maintains high-efficiency insulation performance while possessing good transparency.

[0026] In some embodiments of this disclosure, the cutout structure 12 is rectangular, and the cutout structure 12 is distributed in a rectangular array on the plate 11.

[0027] Clearly, the rectangular perforated structure 12 allows the core material 1 to form a rectangular grid, which is not only simple in construction and easy to manufacture, but also makes it easy to find matching products on the market. The rectangular perforated structure 12 simplifies the production process, reduces costs, and enhances the structural stability and strength of the core material 1. In addition, the distribution of the rectangular array makes the perforations more evenly distributed on the plate 11, thereby ensuring the uniformity of the insulation effect. Secondly, the rectangular perforated structure 12 reduces the solid part of the core material 1, thereby reducing the possibility of heat conduction. At the same time, the rectangular array distribution makes the heat transfer path in the core material 1 more complex, further improving the insulation performance. Thirdly, the use of the bag body 2, combined with the rectangular perforated structure 12 and the rectangular array distribution, allows the entire insulation board to maintain high-efficiency insulation performance while possessing good transparency and aesthetics.

[0028] In some embodiments of this disclosure, the width of the hollow structure 12 is 5 to 15 mm; and / or the thickness of the plate 11 is 3 mm or more; and / or the spacing between adjacent hollow structures 12 is 1 to 5 mm.

[0029] It is easy to understand that the width of the perforated structure 12 and the thickness of the plate 11 both affect the vacuum level of the transparent vacuum insulation panel. The air pressure inside the vacuum chamber 21 is very low; under atmospheric pressure, the portion of the bag 2 located within the perforated structure 12 will inevitably deform inwards. Ideally, the deformation of the bag 2 should remain within a certain range for the transparent vacuum insulation panel. Specifically, when the air pressure inside the vacuum chamber 21 drops to a sufficiently low level, the transparent barrier films on both sides of the core material will not be pressed together by atmospheric pressure, thus avoiding heat conduction caused by adhesion and ensuring the insulation effect of the transparent vacuum insulation panel. Practice shows that when the width of the perforated structure 12 is between 5 and 15 mm and the thickness of the plate 11 is greater than 3 mm, the deformation of the bag 2 is within an acceptable range. Under these conditions, the air pressure in the transparent vacuum insulation panel can be kept at a sufficiently low level, while the transparent barrier films on both sides of the core material 1 will not adhere together. The perforated structure 12 has a width of 3mm or more, which ensures the structural strength of the core material 1 while reducing material usage and production costs. At the same time, an appropriate width also helps improve thermal insulation performance, as a wider perforated structure 12 can more effectively reduce heat conduction. For example, the width of the perforated structure 12 can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, or 15mm. The plate 11 has a thickness of 3mm or more, ensuring that the core material 1 has sufficient strength and stability to withstand the impact and vibration of the external environment. At the same time, a thicker plate 11 also helps improve the overall rigidity and durability of the insulation board. For example, the thickness of the plate 11 can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. The spacing between adjacent perforated structures 12 is 1–5 mm, which helps to achieve a more uniform heat insulation effect. Smaller spacing reduces the heat transfer path in the core material 1, thereby improving heat insulation performance. Simultaneously, appropriate spacing maintains the transparency and aesthetics of the core material 1. For example, the spacing between adjacent perforated structures 12 can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, or 5 mm. By precisely controlling the width of the perforated structure 12, the thickness of the plate 11, and / or the spacing between adjacent perforated structures 12, this embodiment of the present disclosure achieves a vacuum insulation panel that maintains high-efficiency heat insulation performance while possessing good transparency and aesthetics. This design is particularly suitable for applications requiring simultaneous consideration of heat insulation, transparency, and aesthetics, such as architectural glass and display cabinets.

[0030] In some embodiments of this disclosure, the material of the plate 11 is a transparent material.

[0031] Obviously, using transparent material as panel 11 can further improve the transparency of the transparent vacuum insulation panel.

[0032] In some embodiments of this disclosure, the material of the plate 11 is any one of polyethylene terephthalate, polymethyl methacrylate, polystyrene, polycarbonate, transparent MS plastic, and transparent nylon.

[0033] It's easy to understand that, on the one hand, all the above materials are transparent plastics with a certain mechanical strength, providing reliable support for the bag body 2 while maintaining transparency. Polyethylene terephthalate (PET) has advantages such as transparency, lightweight, high strength, high chemical resistance, barrier properties, and low price, and is widely used in packaging (e.g., beverage bottles, food packaging), construction (e.g., sound insulation materials, heat insulation materials), and electronics (e.g., capacitor films, flexible circuit boards). Acrylic, also known as plexiglass, has high light transmittance (up to 93%), good strength and wear resistance, impact resistance, good heat resistance, excellent chemical resistance, and low water absorption. Polystyrene has a light transmittance of up to 90%, is lightweight, and has strong water stability. Polycarbonate is a high-performance, tough, amorphous, and transparent thermoplastic polymer with high impact strength, dimensional stability, and good mechanical properties. Transparent MS plastic refers to a copolymer of 70% ethylene and 30% methyl methacrylate, with a light transmittance of up to 92%, good chemical stability, and wear resistance. Transparent nylon is an amorphous or microcrystalline thermoplastic nylon with a light transmittance of up to 90%, possessing properties such as oil resistance, corrosion resistance, wear resistance, and scratch resistance. Secondly, these materials exhibit excellent processing performance, including ease of molding, cutting, and welding, thereby greatly improving the efficiency and flexibility of vacuum insulation panel manufacturing. Furthermore, they possess excellent dimensional and thermal stability, providing a solid guarantee for product quality consistency and reliability. Thirdly, by selecting these materials, effective cost control is achieved while ensuring product performance. For example, PET and PS are less expensive than PC and PMMA, yet still meet basic transparency and insulation performance requirements. This material selection strategy not only reduces production costs but also significantly enhances the product's market competitiveness. Fourthly, the aforementioned materials have good environmental properties, such as being recyclable and biodegradable, promoting sustainable development.

[0034] In some embodiments of this disclosure, the air pressure in the vacuum chamber 21 is not higher than 1 Pa.

[0035] It is easy to understand that maintaining a pressure of no more than 1 Pa in the vacuum chamber 21 minimizes heat convection within the transparent vacuum insulation panel. Lowering the pressure in the vacuum chamber 21 to below 1 Pa significantly reduces collisions and conduction between gas molecules, thereby reducing the likelihood of heat conduction and convection. This low-pressure environment results in higher insulation efficiency for the vacuum insulation panel, better maintaining internal temperature stability. The low-pressure environment also helps reduce the penetration and corrosion of gas molecules into the core material 1 and the bag body 2, extending the product's lifespan and maintaining stable performance, which is particularly important for applications requiring long-term insulation performance. By achieving highly efficient insulation, the vacuum insulation panel of this embodiment can be applied to more scenarios with stringent temperature control requirements, such as refrigerated display cases, cryogenic laboratories, and spacecraft.

[0036] Figure 3 is a schematic diagram of the structure of the transparent barrier film provided in this disclosure. As shown in Figure 3, in some embodiments of this disclosure, the transparent barrier film includes two opposing protective layers 01, and at least one barrier layer 02 disposed between the two protective layers 01, wherein the material of the protective layer 01 is a flexible transparent polymer material, and the material of the barrier layer 02 is transparent silicone.

[0037] It is easy to understand that transparent silicone, while maintaining its light-transmitting properties, also exhibits excellent barrier properties against water and gas. The flexible transparent polymer material, as the protective layer 01, not only possesses good transparency and flexibility but also resists external environmental erosion, such as ultraviolet radiation and moisture, thereby extending the product's lifespan. The transparent silicone, as the barrier layer 02, has excellent barrier properties, effectively preventing the penetration of gas and water molecules, maintaining the vacuum state within the vacuum chamber 21, and thus improving the insulation effect. By combining the protective layer 01 and the barrier layer 02, a multi-layered transparent barrier film is formed. This structure not only improves the overall performance of the material but also makes the product easier to process and customize, meeting the needs of different application scenarios. By selecting suitable materials, the embodiments of this disclosure achieve effective cost control while ensuring product performance. For example, flexible transparent polymer materials and transparent silicone are less expensive than other high-performance materials but still meet the basic requirements for transparency and barrier performance. According to a market research report on transparent high-barrier films, by designing multi-layer transparent barrier films and carefully selecting materials, we have achieved comprehensive improvements in product transparency, barrier properties, flexibility, and cost.

[0038] In some embodiments of this disclosure, the material of the protective layer 01 is any one of low-density polyethylene, polypropylene, and polyvinyl chloride.

[0039] It is easy to understand that all of the above materials can be prepared into flexible transparent plastics with certain mechanical strength and toughness. Low-density polyethylene (LDPE), also known as high-pressure polyethylene, is the lightest variety of polyethylene resin, known for its excellent transparency, chemical inertness, and good sealing ability. It has good flexibility, extensibility, electrical insulation, transparency, and processability, and its chemical stability is good, with resistance to alkalis and common organic solvents. Polypropylene has good chemical resistance, heat resistance, electrical insulation, high mechanical strength, and wear-resistant processing properties. It can also be modified through grafting, copolymerization, crosslinking, reinforcement, and filling to meet different needs. Some polypropylene products on the market have a light transmittance of over 90%. Polyvinyl chloride (PVC) is a thermoplastic resin polymerized from vinyl chloride monomer. It can be divided into rigid PVC and flexible PVC, among which flexible PVC is suitable as the protective layer 01 material described in this disclosure. Flexible PVC has high strength and good light transmittance, air tightness, and water impermeability.

[0040] Secondly, embodiments of this disclosure provide a refrigeration and heat preservation device, the device comprising the transparent vacuum insulation panel described in the first aspect.

[0041] Refrigeration and insulation devices are widely used in refrigerated display cases, refrigerators, cold storage facilities, and cold chain logistics. They play a crucial role in maintaining low-temperature environments, blocking heat transfer, and ensuring the freshness and quality of food and pharmaceuticals. This disclosure, through the introduction of the transparent vacuum insulation panel described in the first aspect, achieves technological breakthroughs and innovations in the following aspects of refrigeration and insulation devices: High-efficiency insulation: The transparent vacuum insulation panel utilizes the low pressure under vacuum conditions to reduce heat conduction and convection, resulting in highly efficient insulation performance. This design allows the refrigeration and insulation device to effectively reduce energy loss while maintaining low temperatures, thereby improving energy efficiency. Enhanced transparency: The transparent vacuum insulation panel has excellent transparency, allowing items inside the refrigeration and insulation device to be clearly displayed, increasing product visibility and appeal. This is particularly important for applications requiring the display of items, such as refrigerated display cases. Environmental friendliness and durability: The transparent vacuum insulation panel is made of environmentally friendly materials, meeting current societal requirements for environmental protection and sustainable development. Furthermore, this material possesses excellent durability, resisting external environmental corrosion and extending the service life of the refrigeration and insulation device. Design and Application Innovations: The use of transparent vacuum insulation panels provides greater flexibility and versatility in the design and application of refrigeration and insulation devices. For example, refrigeration and insulation devices with different shapes and sizes can be designed to meet the needs of different scenarios. The refrigeration and insulation device provided in this disclosure achieves a perfect combination of efficient insulation and transparency by introducing transparent vacuum insulation panels, while promoting environmental protection and sustainable development, optimizing structural compactness and space utilization, and ensuring durability and reliability. These technological innovations significantly improve the performance of the device.

[0042] For example, the refrigeration and insulation device includes: refrigerator, freezer, refrigerated display case, cold storage, refrigerated truck, ice maker, air conditioner, refrigeration compressor, refrigeration dryer, and refrigeration fan.

[0043] Refrigerators and Freezers: The application of transparent vacuum insulation panels effectively reduces heat transfer inside refrigerators and freezers, improving energy efficiency. Their transparent design also allows users to clearly see the items inside, greatly facilitating retrieval and management. Refrigerated Display Cases: Transparent vacuum insulation panels can be used on the glass doors or side walls of refrigerated display cases to maintain a low internal temperature while showcasing goods to customers. Cold Storage: Transparent vacuum insulation panels can be used on the walls, doors, and ceilings of cold storage facilities to reduce heat transfer and maintain a low internal temperature. Refrigerated Trucks: Transparent vacuum insulation panels can be used in the cargo compartment of refrigerated trucks to reduce heat transfer and maintain the low temperature of items inside. Ice Makers: Transparent vacuum insulation panels can be used in the ice storage boxes or water tanks of ice makers to reduce heat transfer and improve ice-making efficiency. Air Conditioning: Although air conditioners themselves do not directly use transparent vacuum insulation panels, they can be used to insulate pipes and components in air conditioning systems, reducing energy loss and improving system efficiency. Refrigeration compressors: While refrigeration compressors do not directly use transparent vacuum insulation panels, the latter effectively insulates surrounding pipes and components, thereby reducing energy loss. Refrigeration dryers: Transparent vacuum insulation panels are suitable for the gas storage tanks and piping of refrigeration dryers, effectively blocking heat transfer and preventing moisture condensation. Refrigeration fans: Although refrigeration fans do not directly use transparent vacuum insulation panels, the latter provides insulation for surrounding pipes and components, further reducing energy loss.

[0044] The refrigeration and heat preservation device is based on the transparent vacuum insulation board described in any embodiment of the first aspect. The specific implementation of the refrigeration and heat preservation device can be referred to the above embodiments and common knowledge in the field. Since the refrigeration and heat preservation device adopts some or all of the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0045] The present disclosure is further illustrated below with specific examples. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the disclosure. Experimental methods in the following embodiments, unless specific conditions are specified, are generally performed according to industry standards. If no corresponding industry standard exists, then generally accepted international standards, conventional conditions, or conditions recommended by the manufacturer are followed.

[0046] Example 1

[0047] Figure 2 is a schematic diagram of the core material 1 provided in Embodiment 1 of this disclosure. This embodiment provides a transparent vacuum insulation panel, which includes a core material 1 and a bag body 2, wherein the structure of the core material 1 is shown in Figure 2. The core material 1 is a plate 11 with a perforated structure 12, the perforated structure 12 being arrayed on the plate 11; the bag body 2 is made of a transparent barrier film, and a vacuum cavity 21 for containing the core material 1 is provided inside the bag body 2. The perforated structure 12 is square in shape and is evenly distributed on the plate 11 in a rectangular array. The width of the perforated structure 12 is 10 mm, the thickness of the plate 11 is 3 mm, and the spacing between adjacent perforated structures 12 is 3 mm. The plate 11 is made of a transparent material, specifically polymethyl methacrylate. The air pressure inside the vacuum cavity 21 is controlled below 1 Pa. Figure 3 illustrates the structure of the transparent barrier film, which includes two opposing protective layers 01 and three barrier layers 02 disposed between the two protective layers 01. The barrier layer 02 is made of transparent silicone. The protective layer 01 is made of a flexible transparent material, specifically low-density polyethylene.

[0048] Example 2

[0049] Figure 4 is a schematic diagram of the structure of the core material 1 provided in Embodiment 2 of this disclosure. This embodiment provides a transparent vacuum insulation panel, which includes a core material 1 and a bag body 2, wherein the structure of the core material 1 is shown in Figure 4. The core material 1 is a plate 11 with a hollow structure 12, and the hollow structure 12 is arrayed on the plate 11; the material of the bag body 2 is a transparent barrier film, and a vacuum cavity 21 for containing the core material 1 is provided inside the bag body 2. The hollow structure 12 is an equilateral triangle with a side length of 15mm. The thickness of the plate 11 is 4mm, and the spacing between adjacent hollow structures 12 is 2mm. The plate 11 is made of a transparent material, specifically polyethylene terephthalate. The air pressure of the vacuum cavity 21 is maintained below 1Pa. Figure 3 shows the structure of the transparent barrier film, which includes two opposing protective layers 01, and at least one barrier layer 02 disposed between the two protective layers 01, wherein the material of the barrier layer 02 is transparent silicone. The protective layer 01 is made of flexible and transparent polypropylene.

[0050] Example 3

[0051] Figure 5 is a schematic diagram of the core material 1 provided in Embodiment 3 of this disclosure. This embodiment provides a transparent vacuum insulation panel, which includes a core material 1 and a bag body 2, wherein the structure of the core material 1 is shown in Figure 5. The core material 1 is a plate 11 with a hollow structure 12, and the hollow structure 12 is arrayed on the plate 11; the material of the bag body 2 is a transparent barrier film, and a vacuum cavity 21 for containing the core material 1 is provided inside the bag body 2. The hollow structure 12 is a regular hexagon with a side length of 7mm. The thickness of the plate 11 is 5mm, and the spacing between adjacent hollow structures 12 is 5mm. The plate 11 is made of a transparent material, specifically transparent MS plastic. The air pressure of the vacuum cavity 21 is not higher than 1Pa. Figure 3 shows the structure of the transparent barrier film, which includes two opposing protective layers 01, and at least one barrier layer 02 disposed between the two protective layers 01, wherein the material of the barrier layer 02 is transparent silicone. The protective layer 01 is made of a flexible transparent material, such as polyvinyl chloride.

[0052] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transparent vacuum insulation panel, comprising: The core material is a plate with a hollow structure, and the hollow structure is arrayed on the plate. and The bag body is made of a transparent barrier film, and a vacuum cavity for containing the core material is provided inside the bag body.

2. The transparent vacuum insulation panel according to claim 1, wherein, The hollow structure can be any one of a rectangle, parallelogram, triangle, or hexagon.

3. The transparent vacuum insulation panel according to claim 1 or 2, wherein, The hollow structure is rectangular, and the hollow structure is distributed in a rectangular array on the plate.

4. The transparent vacuum insulation panel according to any one of claims 1 to 3, wherein, The width of the hollow structure is 5–15 mm; and / or, The thickness of the plate is 3mm or more; and / or, The spacing between adjacent hollow structures is 1 to 5 mm.

5. The transparent vacuum insulation panel according to any one of claims 1 to 6, wherein, The material of the plate is transparent.

6. The transparent vacuum insulation panel according to claim 5, wherein, The transparent material is any one of polyethylene terephthalate, polymethyl methacrylate, polystyrene, polycarbonate, transparent MS plastic, and transparent nylon.

7. The transparent vacuum insulation panel according to any one of claims 1 to 6, wherein, The air pressure in the vacuum chamber is no higher than 1 Pa.

8. The transparent vacuum insulation panel according to any one of claims 1 to 6, wherein, The transparent barrier film includes two opposing protective layers and at least one barrier layer disposed between the two protective layers. The protective layer is made of a flexible, transparent polymer material, and the barrier layer is made of transparent silicone.

9. The transparent vacuum insulation panel according to claim 8, wherein, The protective layer is made of any one of low-density polyethylene, polypropylene, or polyvinyl chloride.

10. A refrigeration and heat preservation device, comprising the transparent vacuum insulation panel as described in any one of claims 1 to 9.

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