Metal-welded sealed convex double-vacuum-layer glass with edges sealed by sealing grooves and sealing strips

Abstract

Metal-welded sealed convex double-vacuum-layer glass with edges sealed by sealing grooves and sealing strips is disclosed. The convex double-vacuum-layer glass comprises upper glass, lower glass and middle glass. The upper glass and the middle glass are provided with one to four air extracting holes. 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. Peripheries of the three sheets of glass are welded under elevated pressure by alloy solder in an atmosphere heating furnace. Each air extracting hole is sealed by utilization of metal solder in a vacuum furnace. 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 vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. 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 double-vacuum-layer glass with metal welded sealing strip groove edge sealing 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 needs to be kept warm for a period of tim...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a convex double-vacuum layer glass with metal welded sealing strip groove edge sealing and its manufacturing method for the defects of the existing vacuum glass. This vacuum glass and its manufacturing method are simple in process , High production efficiency, the prepared vacuum glass can not only reduce or eliminate the edge sealing stress but also maintain the toughened characteristics of tempered glass, can produce tempered vacuum glass in large quantities, and can increase its service life

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