CN214064237U - Integrated vacuum heat insulation plate - Google Patents

Abstract

The utility model discloses an integrated vacuum heat-insulating plate, which consists of a gas-insulating layer and a core material mixed with a getter. The vacuum insulation panel is obtained by taking glass fiber or mineral wool as a core material, uniformly dispersing a metal organic framework material serving as a getter into the core material, drying the core material, putting the core material into a gas barrier layer such as an aluminum-plastic composite bag and the like, and vacuumizing. The metal organic framework material is uniformly dispersed in the glass fiber or mineral wool core material as the getter, so that the processing procedure of opening holes or grooves in the core material is reduced, the heat insulation board has good integrity and high strength, the contact area of the getter and the core material is large, the gas released by the core material and the gas permeated from the outside can be rapidly adsorbed, the lasting vacuum degree is kept, in addition, the heat conductivity coefficient of the metal organic framework material is low, and the problem of poor heat insulation performance of the position where the getter is placed in the traditional heat insulation board can be effectively solved by dispersing the metal organic framework material in the core material. The vacuum heat-insulating plate has the advantages of low heat conductivity coefficient, good heat-insulating property, long service life, high fire-proof grade and the like.

Description

Integrated vacuum heat insulation plate

Technical Field

The utility model relates to a thermal-insulated insulation material, in particular to integral type vacuum insulation board.

Background

The vacuum heat insulation board is a novel high-efficiency heat insulation material, is prepared by filling a porous core material, wrapping the porous core material by using an air barrier film and then vacuumizing the air barrier film, and can effectively avoid heat transfer caused by air convection by utilizing the vacuum heat insulation principle, so that the heat conductivity coefficient can be greatly reduced. Compared with other heat insulating materials, the vacuum heat insulating plate has the advantages of thin thickness of the heat insulating layer, small volume and light weight due to extremely low heat conductivity, and is suitable for occasions with high energy-saving requirements and small volume and light weight of the heat insulating layer. In the past, the vacuum insulation panel is mainly applied to the fields of military and national defense and the like, and along with the commercialization and cost reduction of the vacuum insulation panel, the vacuum insulation panel has been widely applied to the fields of refrigerators, freezers, electric water heaters, vending machines, freezers, refrigerated containers, heat transmission pipelines, nuclear power facilities, building wall insulation and the like.

In the long-term use process of the vacuum heat insulation plate, external air and moisture can gradually permeate into the heat insulation plate along with the time, and in addition, the filled core material can slowly release some gas, so that the vacuum degree is continuously reduced, the heat insulation performance is reduced, and the service life of a product is ended. In order to solve this problem, it is usually necessary to add a getter to absorb these gases, so that the insulation board can maintain a high degree of vacuum and maintain a low thermal conductivity, and finally, the service life of the vacuum insulation board is prolonged. The getter commonly used at present mainly comprises calcium oxide, iron powder, barium-lithium alloy and the like, and is usually made into a cylindrical or spherical shape and wrapped with an aluminum foil and placed in a hole or a groove reserved in a core material layer, so that the processing difficulty of the core material layer is increased, the strength of the core material layer is easy to damage, and the getter cannot rapidly and fully absorb gas released by the core material and gas permeated from the outside due to small contact area between the getter and the core material layer. In addition, the heat conductivity coefficient of the traditional getter is generally higher than that of the filled core material, so that the heat insulation effect of the getter at the position of the heat insulation board is the worst.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an integral type vacuum insulation board comprises gas barrier layer, core and getter triplex, is to put into the evacuation in the plastic-aluminum composite bag after drying getter homodisperse in the core and obtains. The gas barrier layer is an aluminum-plastic composite bag or a polymer composite material containing a metal sheet, the core material is glass fiber or mineral wool, and the getter is a metal organic framework material. The utility model discloses regard as getter homodisperse with metal organic frame material in glass fiber or mineral wool core, the manufacturing procedure to core trompil or groove has been reduced, the heat insulating board wholeness is good, high strength, the getter is big with the area of contact of core, can adsorb the gas of core release and the gas of external infiltration rapidly, can keep high vacuum in the messenger heat insulating board for a long time, and, the coefficient of thermal conductivity of metal organic frame material self is low, with its dispersion can effectively solve the problem that put getter position heat-proof quality is poor in traditional heat insulating board in the core. The utility model discloses a heat conductivity coefficient of vacuum heat insulating board is less than 0.002W/m.k, has advantages such as thermal insulation performance is good, long service life, fire prevention level height.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, in which fig. 1 is a gas barrier layer, fig. 2 is a core material, fig. 3 is a getter (the size of the getter is enlarged for convenience of illustration), and fig. 4 is a heat seal.

Detailed Description

The aim of the utility model is realized through following technical measure: selecting glass fiber or mineral wool as a core material, uniformly doping a certain amount of metal organic framework material as a getter in the process of scattering the glass fiber or the mineral wool by a carding machine, arranging and lapping the glass fiber or the mineral wool mixed with the getter to a required thickness, conveying the glass fiber or the mineral wool into a hot press for hot pressing, cutting and forming, drying, putting into an aluminum-plastic composite bag or a polymer composite bag containing a metal sheet, vacuumizing for 30 minutes, and performing hot melting and sealing after the vacuum degree reaches 0.1-10 Pa to obtain the integrated vacuum insulation panel.

The utility model discloses regard metal organic frame material as getter homodisperse in glass fiber or mineral wool core, the manufacturing procedure to core trompil or groove has been reduced, the heat insulating board wholeness is good, high strength, the getter is big with the area of contact of core, can adsorb the gas of core release and the gas of external infiltration rapidly, keep lasting vacuum, moreover, the coefficient of thermal conductivity of metal organic frame material self is low, can also effectively solve the poor problem of placing getter position heat-insulating properties in traditional heat insulating board with its dispersion in the core. The vacuum heat-insulating plate of the utility model has the advantages of low heat conductivity coefficient, good heat-insulating property, long service life, high fire-proof grade, etc.

Claims (3)

1. The integrated vacuum insulation panel is characterized by comprising a gas barrier layer, a core material and a getter, wherein the gas barrier layer is provided with a heat seal, the interior of the gas barrier layer is vacuum, the core material and the getter are wrapped in the gas barrier layer, the core material is glass fiber or mineral wool, and the getter is a metal organic framework material.

2. An integrated vacuum insulation panel according to claim 1, wherein the gas barrier layer is an aluminum-plastic composite bag or a polymer composite material containing a metal sheet.

3. The integrated vacuum insulation panel according to claim 1, wherein the getter is uniformly dispersed in the core material.

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