High-temperature-sheet-combination convex double-vacuum-layer glass provided with edges sealed by sealing grooves and sealing strips and provided with mounting hole(s)

Abstract

High-temperature-sheet-combination convex double-vacuum-layer glass provided with edges sealed by sealing grooves and sealing strips and provided with mounting hole(s) is disclosed. The convex double-vacuum-layer glass comprises upper glass, lower glass and middle glass, and is characterized in that: each mounting hole and a corresponding air extracting hole are of an integrated structure; the number of the mounting hole(s) is 1-4; the lower surfaces of the upper glass and the middle glass and the periphery of each air extracting hole are provided with sealing strips; corresponding positions of the peripheries of the upper surfaces of the middle glass and the lower glass and each air extracting hole are provided with the sealing grooves and sealing strips; after the three sheets of glass are rapidly heated, peripheries of the three sheets of glass are welded under elevated pressure by glass solder in a heating furnace; each air extracting hole is automatically sealed by utilization of metal solder in a vacuum furnace; and two sealed vacuum layers are formed among the three sheets of glass. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured tempered vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. The tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

Description

technical field [0001] The invention relates to the technical field of glass deep processing, in particular to a convex-surface double-vacuum-layer glass with mounting holes on the edge sealing of a high-temperature sealing strip groove and a manufacturing method thereof. Background technique [0002] As a new type of glass with the most energy-saving potential, vacuum glass has achieved large-scale production after more than ten years of research and development, and has been well applied in many fields, especially in the construction field; but there are also obvious The shortcomings are mainly low production efficiency, small production capacity, and inability to produce tempered vacuum glass, etc., which limit its popularization and application in a wider range; the existing large-scale production of vacuum glass uses high temperature (430-480°C) normal pressure The production process of lower edge sealing, low temperature (180-300°C) vacuuming and sealing, because it ne...

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Problems solved by technology

[0002] As a new type of glass with the most energy-saving potential, vacuum glass has achieved large-scale production after more than ten years of research and development, and has been well applied in many fields, especially in the construction field; but there are also obvious The shortcomings are mainly low production efficiency, small production capacity, and inability to produce tempered vacuum glass, etc., which limit its popularization and application in a wider range; the existing large-scale production of vacuum glass uses high temperature (430-480°C) normal pressure The production process of lower edge sealing, low temperature (180-300°C) vacuuming and sealing, because it needs to be kept warm for a period of time at the edge sealing temperature, generally 15-20min, so that the solder can fully melt and flow and bond to obtain a higher sealing Therefore, tempered glass will be annealed during the edge sealing process under high temperature and long-term action. Although the initial stress of tempered glass can be made very high, only semi-tempered vacuum glass can be obtained; tempered vacuum glass Another main reason why it cannot be produced is the flatness of the glass. During the tempering process, the glass will deform by 0.1-0.3%, and its deformation is far greater than the thickness of the vacuum layer of the vacuum glass. If the vacuum glass is flat during the production process Insufficient high density (especially tempered glass), inconsistent solder thickness, uneven heating during the edge sealing process and other factors will lead to desoldering of the edge sealing, poor airtightness and no vacuum glass, and also lead to inaccurate upper and lower glass. When the support is fully and uniformly supported, the vacuum glass will generate a lot of local stress under the pressure of about 10 tons per square meter of the atmosphere after vacuuming, and these stresses are more pronounced at the corners of the glass. Obviously, the corners are the weakest part of the glass; under the long-term action of these edge-sealing stresses, the vacuum glass with greater stress will break and cause damage, which will not only affect the service life of the vacuum glass, but may also damage the glass. It brings safety problems; the existing vacuum glass has only one suction port regardless of its size. Since the thickness of the vacuum layer and the inner diameter of the suction port are extremely small, the suction resistance is extremely large, resulting in a large internal and external pressure difference. Not only does it require a high degree of vacuum Vacuum pump, and the pumping time is very long, the production efficiency is very low, which is more serious for large pieces of vacuum glass; vacuum glass can replace the existing glass and be used in places requiring heat insulation and sound insulation, and some installation places need to be installed on the glass Perforated installation, but the existing vacuum glass cannot meet this requirement

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