Double-layer nano vacuum insulation board

Abstract

This utility model discloses a double-layer nano-vacuum insulation board. A high-density core material has a groove formed by a boss on one side, and an ultra-low-density core material is placed in the groove. A metallized film is wrapped around the end of the ultra-low-density core material away from the high-density core material. The outer edge of the metallized film also wraps around the boss and the outer edge of the high-density core material away from the ultra-low-density core material. This utility model has a reasonable structure, possessing sufficient mechanical strength and ease of use, while minimizing the overall material weight and density. Furthermore, it effectively controls the overall cost without sacrificing overall performance. Simultaneously, the groove formed by the boss on one side of the high-density core material, with the ultra-low-density core material placed in the groove, and the metallized film covering the outer surface of the ultra-low-density core material and the outer edge of the high-density core material, greatly improves the connection between the ultra-low-density core material and the high-density core material, preventing detachment or loosening, and significantly extending the service life.

Description

Technical Field

[0001] This utility model relates to the field of heat insulation board technology, specifically a double-layer nano-vacuum heat insulation board. Background Technology

[0002] Nano-vacuum insulation panels are insulation materials made by using nanoporous materials as the core material, covering them with a high-barrier membrane, and sealing them after being evacuated to a high vacuum. The core principle is to utilize nanopores to maximally suppress convective heat transfer and intermolecular heat conduction, thereby achieving insulation performance far exceeding that of traditional insulation materials at the same thickness.

[0003] Most nano-vacuum insulation panels use a single-layer core material, which limits their applicable environment. Traditional double-layer nano-vacuum insulation panels have poor connection between the two core materials, affecting their service life and performance. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a double-layer nano-vacuum insulation panel to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-layer nano-vacuum insulation board, comprising a high-density core material, an ultra-low-density core material, and a metallized film. A boss is provided on the periphery of one side of the high-density core material, and the high-density core material forms a groove through the boss. The ultra-low-density core material is disposed in the groove of the high-density core material. The metallized film wraps around the end of the ultra-low-density core material away from the high-density core material, and the periphery of the metallized film also wraps around the boss and the outer edge of the high-density core material away from the ultra-low-density core material.

[0006] Preferably, the present invention provides a double-layer nano-vacuum insulation board in which the outer edge of the ultra-low density core material is tightly connected to the inner wall of the boss.

[0007] Preferably, in the double-layer nano-vacuum insulation board provided by this utility model, the end of the ultra-low density core material away from the high density core material is flush with the end face of the boss.

[0008] Preferably, the present invention provides a double-layer nano-vacuum insulation panel in which the metallized film is tightly bonded to the outer surface of the ultra-low density core material and the periphery of the high density core material by means of high-temperature resistant adhesive.

[0009] Preferably, the present invention provides a double-layer nano-vacuum insulation panel in which a vacuum bag is provided on the outside of the high-density core material, the ultra-low-density core material and the metallized film and a vacuum is drawn.

[0010] Compared with the prior art, the beneficial effects of this utility model are: Using high-density and ultra-low-density core materials, the overall weight and density of the material are reduced to a minimum while maintaining sufficient mechanical strength and ease of use. Furthermore, the overall cost can be effectively controlled without sacrificing overall performance. Meanwhile, a groove is formed on one side of the high-density core material via a boss, and the ultra-low-density core material is placed within this groove. The outer surface of the ultra-low-density core material and the periphery of the high-density core material are coated with a metallized film, which greatly improves the connection between the ultra-low-density and high-density core materials, preventing detachment or loosening and significantly extending service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 For the appendix Figure 1 Enlarged structural diagram of point A in the middle.

[0012] In the diagram: 1. High-density core material; 2. Ultra-low-density core material; 3. Metallized film; 4. Boss; 5. Groove; 6. Vacuum bag. Detailed Implementation

[0013] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] Please see Figure 1-2This utility model provides a technical solution: a double-layer nano-vacuum insulation panel, comprising a high-density core material 1, an ultra-low-density core material 2, and a metallized film 3. A boss 4 is provided on the outer periphery of one side of the high-density core material 1, forming a groove 5 through the boss 4. The boss 4 and the high-density core material 1 are integrally formed. The end of the ultra-low-density core material 2 away from the high-density core material 1 is flush with the end face of the boss 4 to ensure the flatness of the entire composite core material and to ensure that the metallized film 3 can be smoothly laid flat on the outer surface of the ultra-low-density core material 2 and the boss 4. The ultra-low-density core material 2 is disposed in the groove 5 of the high-density core material 1. The outer edge of the core material 2 is tightly connected to the inner wall of the boss 4 to ensure the connection between the ultra-low density core material 2 and the high density core material 1 and to prevent loosening. The metallized film 3 is wrapped around the end of the ultra-low density core material 2 away from the high density core material 1. The outer periphery of the metallized film 3 is also wrapped around the boss 4 and the outer edge of the high density core material 1 away from the ultra-low density core material 2. The metallized film 3 is tightly attached to the outer surface of the ultra-low density core material 2 and the outer periphery of the high density core material 1 by high temperature resistant adhesive to achieve the connection between the metallized film 3 and the ultra-low density core material 2 and the high density core material 1. The tensile force prevents the ultra-low density core material 2 from detaching from the groove 5 of the high density core material 1. The high-density core material 1, the ultra-low-density core material 2, and the metallized film 3 are all surrounded by a vacuum bag 6 and vacuumed to achieve mechanical protection of the core material and maintain the vacuum level. The vacuum bag 6 is composed of PET / nylon (protective layer) + aluminum foil or vapor-deposited layer (barrier layer) + PE (heat-sealing layer). It is not just a simple wrapping, but a precise high-barrier gas system. Its performance directly determines the efficiency and lifespan of the insulation board.

[0015] Installation method and operating principle: First, the high-density core material 1 and the ultra-low-density core material 2 are produced by pressing under certain pressure, temperature and holding time. The main material of the high-density core material 1 is silica dry gel, alumina dry gel or ceramic fiber board, etc., which have a temperature resistance of more than 800℃. The main material of the ultra-low-density core material 2 is fumed silica or open-cell polyurethane foam, etc., which have relatively low temperature resistance. The high-density core material 1 has an integrally formed boss 4 on its outer edge, and a groove 5 is formed inside the boss 4. The dimensions of the ultra-low-density core material 2 match the groove 5. During processing, the ultra-low-density core material 2 is placed into the groove 5 of the high-density core material 1. Then, a pre-cut metallized film 3 is attached to the outer end face of the ultra-low-density core material 2 using high-temperature resistant adhesive. The outer edge of the metallized film 3 wraps around the periphery of the high-density core material 1 and is tightly connected to the periphery of the high-density core material 1 using high-temperature resistant adhesive, thus completing the connection between the high-density core material 1 and the ultra-low-density core material 2. The metallized film 3 is made by vapor-depositing nano-sized aluminum or silicon dioxide on a substrate such as PET. Finally, the core material is placed in a vacuum bag 6, vacuumed, and sealed to obtain a double-layer nano-vacuum insulation board. In use, the high-density core material 1 is placed on the hot surface. The structure of this utility model is reasonable. First, it uses high-density core material 1 and ultra-low-density core material 2 as core materials. Under the premise of sufficient mechanical strength and ease of use, it reduces the weight and density of the overall material to the greatest extent. It can also effectively control the overall cost without sacrificing the overall performance. At the same time, a groove 5 is formed on one side of the high-density core material 1 through the boss 4. The ultra-low-density core material 2 is placed in the groove 5. The outer surface of the ultra-low-density core material 2 and the periphery of the high-density core material 1 are wrapped with a metallized film 3, which greatly improves the connection between the ultra-low-density core material 2 and the high-density core material 1, avoids falling off or loosening, and greatly improves the service life.

[0016] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0017] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A double-layer nano-vacuum insulation panel, characterized in that: The material includes a high-density core material (1), an ultra-low-density core material (2), and a metallized film (3). A boss (4) is provided on the periphery of one side of the high-density core material (1). The high-density core material (1) forms a groove (5) through the boss (4). The ultra-low-density core material (2) is disposed in the groove (5) of the high-density core material (1). The metallized film (3) is wrapped around the end of the ultra-low-density core material (2) away from the high-density core material (1). The periphery of the metallized film (3) is also wrapped around the boss (4) and the outer edge of the high-density core material (1) away from the ultra-low-density core material (2).

2. The double-layer nano-vacuum insulation panel according to claim 1, characterized in that: The outer edge of the ultra-low density core material (2) is tightly connected to the inner wall of the boss (4).

3. The double-layer nano-vacuum insulation panel according to claim 1, characterized in that: The end of the ultra-low density core material (2) away from the high density core material (1) is flush with the end face of the boss (4).

4. The double-layer nano-vacuum insulation panel according to claim 1, characterized in that: The metallized film (3) is tightly attached to the outer surface of the ultra-low density core material (2) and the periphery of the high density core material (1) by high-temperature resistant adhesive.

5. The double-layer nano-vacuum insulation panel according to claim 1, characterized in that: The high-density core material (1), the ultra-low-density core material (2) and the metallized film (3) are provided with vacuum bags (6) and vacuumed.

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