Metal vacuum heat insulation plate with mounting hole and manufacturing method thereof

Abstract

The invention discloses a metal vacuum heat insulation plate with a mounting hole. The metal vacuum heat insulation plate comprises a shell, core materials and a vacuum cavity; the metal vacuum heat insulation plate is characterized in that the mounting hole and an extraction opening are united as one; the mounting hole penetrates the whole composite plate; the shell is made of metal plates or metal composite plates, and the core plates are arranged in the vacuum cavity, provide additional strength for the shell and ensure the smoothness of the shell under the barometric pressure; the vacuum cavity is a closed cavity formed by the mode that welding and side sealing are carried out on the shell under the normal pressure, and high-temperature opening sealing is carried out on the shell under vacuum; according to the opening sealing step, the extraction opening prefabricated in the shell is automatically sealed in a vacuum furnace through low-temperature solder on the basis of the liquid sealing principle; the low-temperature solder comprises low-temperature metal and alloy solder. A manufacturing method of the metal vacuum heat insulation plate is simple in technology, and the manufactured metal vacuum heat insulation plate with the mounting hole can overcome defects of an existing heat preservation plate and a vacuum heat insulation plate. The strength, the heat insulation, noise insulation and fire prevention properties and the decoration function can be improved.

Description

technical field [0001] The invention relates to a vacuum heat insulation panel, in particular to a metal vacuum heat insulation panel with installation holes and a manufacturing method thereof. Background technique [0002] my country's building energy consumption has accounted for more than 1 / 3 of the energy consumption of the whole society, and it is increasing year by year. The use of thermal insulation building materials is one of the main means to reduce building energy consumption. At present, many materials used for building exterior wall insulation are Class B insulation materials, such as polystyrene, polyurethane, foam rubber and other organic materials. These organic materials have poor heat resistance and are easy to burn. A large amount of toxic smoke can accelerate the spread of the fire; at the same time, organic materials will shrink during a fire, producing burning droplets, causing the tiles on the insulation layer to fall off, which may cause secondary fir...

AI Technical Summary

Problems solved by technology

At present, many materials used for building exterior wall insulation are Class B insulation materials, such as polystyrene, polyurethane, foam rubber and other organic materials. These organic materials have poor heat resistance and are easy to burn. A large amount of toxic smoke can accelerate the spread of the fire; at the same time, organic materials will shrink during a fire, producing burning droplets, causing the tiles on the insulation layer to fall off, which may cause secondary fires and secondary fires. harm, so the relevant state departments explicitly prohibit the use of organic insulation materials for external wall insulation, especially in high-rise buildings and public buildings

Among the thermal insulation materials whose combustion performance reaches the A-level standard, inorganic materials represented by mineral wool and rock wool are mainly used. However, the existing domestic products have a large gap with the requirements of architectural applications in terms of water absorption, strength, and weather resistance. If it is directly used for building wall insulation, there will be problems such as water absorption, falling, softening, etc.

In addition, the cost of Class A thermal insulation materials is much higher than that of organic materials, and the construction process is complicated. The construction cost far exceeds the cost of Class B thermal insulation materials, and its thermal insulation performance is poor and energy consumption is high, which cannot meet the current needs of the country for energy conservation and emission reduction.

[0003] Vacuum insulation panels are a new type of insulation material developed in recent years, mainly including vacuum bags and core materials. There are obvious disadvantages such as difficult drying of the core material, poor air tightness of the vacuum bag, low puncture resistance, high moisture content of the core material, fast vacuum attenuation, easy expansion of the bag, short insulation life, etc.

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