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Vacuum heat insulation panel with laminated core material of thin sheets with concave-convex structure on multi-layer surface

A technology of vacuum insulation panel and concave-convex structure, which is applied to layered products, heat exchange equipment, and protection pipes through thermal insulation, etc., can solve the problems of reducing the pressure of vacuum insulation panels, increasing the thickness of core materials, and increasing the thickness of core materials. , to achieve the effect of small impact on production cost, increased contact thermal resistance, and improved thermal insulation performance

Active Publication Date: 2021-10-29
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because this method involves material selection, material processing, etc., repeated trials are required, and usually the development cost is high and the cycle is long; 2. Further reduce the internal pressure of the vacuum insulation panel
At present, the internal pressure of vacuum insulation panels is already very low, many of which are less than 1Pa. According to existing research, continuing to reduce the pressure at this time will not help to further improve the insulation performance of vacuum insulation panels, and the production time will increase significantly; 3 , Increase the thickness of the core material
The thermal insulation performance of the vacuum insulation panel is approximately proportional to the thickness of the core material. Increasing the thickness will effectively improve the thermal insulation performance, but the increase in the thickness of the core material will increase the material cost in proportion. Reduced number of insulation panels

Method used

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  • Vacuum heat insulation panel with laminated core material of thin sheets with concave-convex structure on multi-layer surface
  • Vacuum heat insulation panel with laminated core material of thin sheets with concave-convex structure on multi-layer surface
  • Vacuum heat insulation panel with laminated core material of thin sheets with concave-convex structure on multi-layer surface

Examples

Experimental program
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Embodiment 1

[0039] see figure 1 , figure 2 .

[0040] Such as figure 1 The surface shown has a corrugated structure of fiberglass flakes. During production, the glass fiber layer is hot-pressed into a fiber layer with a fiber thickness of 1-2mm and a wavy concave-convex structure with a height or depth of 0.5-1mm. The distance between two adjacent wavy structures is 2-3mm, and they are evenly distributed in the horizontal direction. The core material of the wavy structure sheet is formed by alternating and continuous arrangement of several arc-shaped arched and non-arched parts in the horizontal direction, and its side curves are alternately arc-shaped and straight-line. That is, the wavy structure sheet core material presents a wavy plate shape formed by the projection of the above side curve.

[0041] Such as figure 2 It is a schematic diagram of two adjacent layers of sheets in the laminated core material of multi-layer corrugated glass fiber sheets. The fiber core material is ...

Embodiment 2

[0054] see image 3 , Figure 4 .

[0055] Such as image 3 It is a grid-shaped embossed structure fiber and SiO 2 Schematic of an airgel composite sheet produced using fibers and SiO 2 The airgel composite material is hot-pressed and embossed to form a grid-like fiber and SiO with a base layer thickness of 1-1.5mm, an embossing height of 0.5-1mm, a width of 1mm, and a spacing of 4-6mm between parallel grid-like protrusions. 2 Airgel composite sheets. On the lattice embossed structure sheet, several elongated concave-convex structures are arranged vertically and intersecting, and the shape is similar to the square lattice pattern of a waffle.

[0056] Such as Figure 4 Shown is two adjacent layers of sheets in a laminated core material of multi-layer lattice-like embossed structure sheets. The bulges and bulges of two adjacent sheets are arranged in a staggered arrangement to prevent the bulges of the lower layer from corresponding to the recesses of the upper layer, so...

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Abstract

The invention discloses a vacuum heat insulation panel which adopts laminated core materials with laminated sheets with concave-convex structures on the multi-layer surface. At least two sheets with concavo-convex structures on the surface are stacked, and the concavo-convex structures of two adjacent layers of sheets are arranged alternately without overlapping. The multi-layer surface has a concave-convex structure laminated core material, which is cured, dried, flattened and then flattened, then hot-pressed to form a pattern, and then laminated and cut layer by layer. The outside of the core material is coated with a barrier film, and the inside is in a vacuum state. The present invention reduces the contact area between each layer of sheets by adopting the sheet with a concave-convex structure on the surface, significantly increases the heat transfer resistance of the core material itself, greatly improves the heat insulation performance of the vacuum insulation panel, and has good economical and industrialization prospects .

Description

technical field [0001] The invention relates to a vacuum heat insulation material technology, in particular to a vacuum heat insulation panel which adopts laminated core materials of thin sheets with concavo-convex structures on the multi-layer surface. Background technique [0002] With the increase of energy consumption and the pressure of environmental pollution, reducing energy consumption has become an important issue facing the world today. Social progress and the improvement of people's living standards make the energy consumption caused by heating, air conditioning and refrigeration account for an increasing proportion of the total social consumption. Therefore, the development of green and efficient insulation materials is of great significance to reduce energy consumption. [0003] Vacuum insulation panel is an excellent thermal insulation material. Its thermal conductivity is usually between 0.002W / (m K) and 0.008W / (m K), and its thermal insulation performance is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/02F16L59/065B32B3/30
CPCB32B3/30F16L59/029F16L59/065
Inventor 于明志张方方毛煜东崔萍
Owner SHANDONG JIANZHU UNIV