Heat insulation and sound insulation structure

Abstract

The utility model relates to a heat insulation and sound insulation structure, which relates to the technical field of heat insulation and sound insulation structures, and comprises a metal structural member and a packaging structure, the packaging structure forms a closed cavity on the surface of the metal structural member, and the closed cavity is filled with a filling material and vacuumized. According to the utility model, one or more layers of filling materials are pasted on the surface of the metal structural member, the packaging structure is used for packaging, the interior is vacuumized, and the periphery is sealed, that is, the filling materials are arranged in the closed cavity formed by the packaging structure and the metal structural member, and the vacuum pumping treatment is carried out, so that the sealing performance of the metal structural member is improved. A layer of vacuum cavity is formed in the metal structural part, air heat conduction and air heat transfer sound waves do not exist in the cavity, and the performance of the cavity is several times higher than that of traditional heat preservation cotton, so that better sound insulation and heat insulation effects can be achieved with smaller thickness and weight, and the influence on structural application of the metal structural part is reduced; in addition, the metal structural part is high in small molecule gas permeation resistance, and the durability of maintaining the vacuum degree in the vacuum cavity can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat -insulation, sound -proof structure technical field especially a kind of heat -insulation, sound -proof structure. BACKGROUND

[0002] In some application scenarios, many structural members need to have heat insulation and sound insulation functions simultaneously, such as the interior of automobile doors, floors, ceilings, refrigerator bodies, refrigerator doors and buildings, etc. The traditional solution is to paste heat insulation and sound insulation materials on the structural members to achieve the functions. This treatment increases the thickness of the structural members, limiting their use, and the traditional heat insulation and sound insulation cotton relies on air for heat insulation and sound insulation. Its effect is limited by the thermal conductivity and sound conduction characteristics of air itself, making it difficult to effectively improve the heat insulation and sound insulation effect, resulting in poor heat insulation and sound insulation effect.

[0003] Therefore, there is an urgent need for a heat-insulating and sound-insulating structure to solve the above problems. SUMMARY

[0004] To help solve the problems in the prior art, the utility model provides a heat-insulating and sound-insulating structure, which adopts the following technical solution: a metal structural member and a packaging structure are provided, the packaging structure forms a closed cavity on the surface of the metal structural member, and a filler material is arranged in the closed cavity and is vacuumized.

[0005] Further characterized in that,

[0006] The packaging structure includes an aluminum plastic film, and the peripheral side of the aluminum plastic film is heat-sealed to the metal structural member.

[0007] The filler material is one or more of glass fiber, polyester fiber, foam and aerogel.

[0008] An air adsorber is further arranged in the closed cavity.

[0009] The packaging structure includes a metal foil with weldability, and the peripheral side of the metal foil is sealed to the metal structural member.

[0010] The filler material includes one or more of glass fiber cotton, ceramic fiber or basalt fiber.

[0011] The metal foil includes a steel foil, a copper foil, a tin foil or an aluminum foil.

[0012] The side of the metal structural member close to the closed cavity is a flat surface.

[0013] The contact surface of the packaging structure and the closed cavity is a flat surface.

[0014] The closed cavity is in the shape of a sheet with uniform thickness.

[0015] The above structure can achieve the following beneficial effects.

[0016] By pasting one or more layers of filling materials on the surface of the metal structural member and encapsulating by the encapsulation structure, and then vacuumizing the inside and sealing the periphery, that is, the filling materials are placed in the closed cavity formed by the encapsulation structure and the metal structural member, and vacuumizing treatment is carried out, so that a vacuum cavity is realized on the metal structural member, the cavity has no air heat conduction and no air heat transmission sound wave, and the performance is better than that of the traditional thermal insulation cotton, so that better sound insulation and heat insulation effects can be realized with smaller thickness and weight, the influence on the application of the structure of the metal structural member itself is reduced, and the metal structural member itself has strong resistance to small molecule gas penetration, so that the durability of the vacuum degree in the vacuum cavity can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a whole structure schematic diagram of the embodiment of the application;

[0018] Figure 2 is a structure cross section schematic diagram of the embodiment of the application;

[0019] Figure 3 is a structure schematic diagram of the embodiment of the application in which the getter layer is added;

[0020] Figure 4 is a structure schematic diagram of the embodiment of the application in which part of the getter is added.

[0021] Signs: 1, metal structural member; 2, encapsulation structure; 3, closed cavity; 4, getter. DETAILED DESCRIPTION

[0022] In order for the personnel in the technical field to better understand the application scheme, the technical scheme in the embodiment of the application will be clearly and completely described below in combination with the drawings in the embodiment of the application. Obviously, the described embodiment is only a part of the embodiment of the application, rather than all the embodiments. Based on the embodiment in the application, all other embodiments obtained by the personnel in the field without creative labor should belong to the protection range of the application.

[0023] It should be noted that the terms "include" and "have" and any variations thereof in the specification and claims of the application and the above drawings are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment containing a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to the process, method, product or equipment.

[0024] The following will be described in combination with the drawingsFigures 1-4 The utility model makes further detailed description.

[0025] Referring to Figures 1-2 A kind of heat and sound insulation structure, including metal structural member 1, encapsulation structure 2, encapsulation structure 2 is formed closed cavity 3 on the surface of metal structural member 1, closed cavity 3 is provided with filler material and is extracted vacuum, by pasting a layer or multiple layers of filler material on the surface of metal structural member 1, and with encapsulation structure 2 is encapsulated, again to internal extraction vacuum and carries out four around sealing, that is, filler material is placed in closed cavity 3 formed by encapsulation structure 2 and metal structural member 1, and is extracted vacuum treatment, to realize a layer of vacuum cavity on the metal structural member 1, the cavity has no air heat conduction, and no air heat transfer sound wave, its performance is better than traditional thermal insulation cotton (performance is 10 times or so higher), therefore can with smaller thickness and weight realize better sound insulation and heat insulation effect, reduce the influence on the structure application of metal structural member 1 itself (for example, after metal structural member 1 increases relatively thick sound insulation, heat insulation material, influence installation etc.), and metal structural member 1 itself is very strong to the penetration ability of small molecule gas, can guarantee the durability of vacuum degree maintenance in vacuum cavity.

[0026] Wherein, in the specific implementation process, closed cavity 3 formed by encapsulation structure 2 can be provided on the surface of metal structural member 1 partial area, filler material (such as glass fiber, polyester fiber, foam and gas silicon one or more, and film sandwich / rubber / plastic sandwich, if multiple, then can be layered) and getter 4 are placed in closed cavity 3, and filler material and getter 4 can be structured as layered structure (such as shown in Figure 3 ), it can also be structured as block structure (such as shown in Figure 4 ), dispersed in filler material, the position and demand in closed cavity 3 are reasonably set according to actual situation;In the embodiment, getter 4 is arranged on the side close to metal structural member 1, and glass fiber is arranged close to getter layer;Encapsulation structure 2 is aluminum plastic film, that is, a layer of aluminum plastic film is attached on the surface of metal structural member 1, the glass fiber (glass fiber) region surrounded by aluminum plastic film is extracted vacuum, and the edge of aluminum plastic film is heat sealed with metal structural member 1, to form vacuum cavity, realize that the metal structural member 1 has structural performance, while having extremely strong heat insulation and sound insulation function.The structural design can be used on the structural member of automobile door, ceiling, floor, nacelle cover, tailgate, refrigerator door, refrigerator frame and the like needing heat insulation or sound insulation.

[0027] In the specific implementation process, the filling material (such as one or more of glass fiber cotton, ceramic fiber or basalt fiber, and film / rubber / plastic interlayer, etc., if multiple are selected, they can be layered) can be placed in part of the surface area of the metal structural part 1, and the packaging structure 2 is a metal foil (such as steel foil, copper foil, tin foil or aluminum foil, and other metal foils with welding properties), that is, a layer of metal foil is attached to the surface of the metal structural part 1, the area surrounded by the metal foil is vacuumized, and the metal foil edge is sealed with the metal structural part 1 (which can be welded or heat sealed, etc.), forming a vacuum cavity, realizing that the metal structural part 1 has structural performance, and at the same time has strong heat and sound insulation functions. And because of the use of metal foil packaging, this structure can not only be used in normal temperature environment, but also in high temperature environment. Because the metal foil itself has strong barrier property, there is no need to add getter 4 or increase part of the getter 4 in the vacuum cavity, and the metal foil can improve the durability, temperature resistance and surface scratch resistance.

[0028] Further optimization is that, as shown in Figure 2 The side of the metal structural part 1 close to the closed cavity 3 and the contact surface of the packaging structure 2 and the closed cavity 3 can be curved or flat (that is, the closed cavity 3 is irregularly shaped), but in order to make the heat or sound insulation performance of each part of the structure uniform, the side of the metal structural part 1 close to the closed cavity 3 and the contact surface of the packaging structure 2 and the closed cavity 3 are preferably flat, so that when filling the filling material, the uniformity of the filling material thickness can be more convenient to see, if the surface of the metal structural part 1 is not flat, the shape of the packaging structure 2 can be adaptively adjusted to make the closed cavity 3 in the form of a sheet with uniform thickness, so that the uniformity of the filling material can be ensured, the filling material is saved, and the heat or sound insulation performance of each part of the structure is uniform.

[0029] Further optimization is that the metal structural part 1 can be a simple metal plate, or a surface treated metal plate (such as a steel plate with electrophoretic paint, a surface film, a surface plating or a metal plate with paint).

[0030] In summary, by attaching one or more layers of filling material to the surface of the metal structural part 1 and packaging with the packaging structure 2, and then vacuumizing the inside and sealing the four sides, that is, the filling material is placed in the closed cavity 3 formed by the packaging structure 2 and the metal structural part 1, and vacuumized, a vacuum cavity is realized on the metal structural part 1, the cavity has no air heat conduction and no air heat sound wave, its performance is better than that of traditional thermal insulation cotton, so it can achieve better sound and heat insulation effect with smaller thickness and weight, reduce the influence on the structure application of the metal structural part 1 itself, and the metal structural part 1 itself has strong resistance to small molecule gas penetration, which can ensure the durability of the vacuum degree in the vacuum cavity;

[0031] At the same time, the cost can be obviously reduced due to saving the aluminum plastic film, double-sided adhesive and getter;

[0032] The vacuum cavity also avoids corrosion and damage of foreign matters (such as water vapor, water, air and the like) to the metal plate.

[0033] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application, and a person skilled in the art can make a modification of the embodiments without creative contribution according to the needs after reading the specification, but as long as the modification is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A heat-insulating and sound-insulating structure, characterized in that, include: Metal structural component (1) and encapsulation structure (2), wherein the encapsulation structure (2) forms a closed cavity (3) on the surface of the metal structural component (1), and the closed cavity (3) is filled with filling material and evacuated.

2. The heat insulation and sound insulation structure according to claim 1, characterized in that: The encapsulation structure (2) includes an aluminum-plastic film, the periphery of which is heat-sealed with the metal structural component (1).

3. The heat insulation and sound insulation structure according to claim 2, characterized in that: The filling material is one or more of glass fiber, polyester fiber, foam, and fumed silica.

4. The heat insulation and sound insulation structure according to claim 1, characterized in that: The sealed cavity (3) is also provided with a getter (4).

5. The heat insulation and sound insulation structure according to claim 1, characterized in that: The encapsulation structure (2) includes a weldable metal foil, the periphery of which is sealed to the metal structure (1).

6. The heat insulation and sound insulation structure according to claim 5, characterized in that: The filling material includes one or more of glass fiber cotton, ceramic fiber or basalt fiber.

7. The heat insulation and sound insulation structure according to claim 5, characterized in that: The metal foil includes steel foil, copper foil, tin foil, or aluminum foil.

8. A heat insulation and sound insulation structure according to any one of claims 1-7, characterized in that: The side of the metal structural component (1) closest to the enclosed cavity (3) is a plane.

9. A heat insulation and sound insulation structure according to any one of claims 1-7, characterized in that: The contact surfaces of the encapsulation structure (2) and the closed cavity (3) are both planar.

10. A heat insulation and sound insulation structure according to any one of claims 1-7, characterized in that: The enclosed cavity (3) is in the form of a sheet with uniform thickness.

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