Sealing structure of dual-vacuum-layer glass getter and manufacturing method thereof

Abstract

The invention discloses a sealing structure of a dual-vacuum-layer glass getter. The sealing structure is characterized in that upper glass and middle glass of vacuum glass are drilled with a circular hole for serving as an extraction opening; a circular tube is inserted into each extraction opening respectively; the upper parts of the circular tubes are welded together with the glass; the lower parts of the circular tubes are turned up, thereby forming sealing grooves; sealing covers are arranged on the upper parts of the sealing grooves; the edges of the sealing covers are inserted into the sealing grooves; after the edges of the glass are sealed, the getter is put into the extraction openings, and the sealing covers are covered; a metal solder is put into the sealing grooves or on the sealing covers; the extraction openings are vacuumized and heated; the getter is automatically activated at a high temperature in vacuum; meanwhile, the metal solder is molten into liquid at a high temperature, and the liquid is left in the sealing grooves; the edges of the sealing covers are submerged in the liquid; the extraction openings are automatically sealed by using a liquid sealing principle; and the getter is sealed in vacuum layers. Through adoption of a method for manufacturing the sealing structure, mass production can be realized; the production efficiency and yield of the vacuum glass can be increased greatly; and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of vacuum glass, in particular to a sealing structure of a double-vacuum layer glass getter and a manufacturing method thereof. [0002] Background technique [0003] The existing vacuum glass is generally composed of two or three pieces of flat glass. The glass is sealed with low-temperature glass solder around the edges, and there is a tiny support in the middle. A thin layer of 0.1-0.2mm thickness is formed between the two pieces of glass by pumping air. Vacuum layer. Since there is no heat and sound transmission of gas, and the inner surface of the glass can have a transparent low-heat radiation film, the vacuum glass has good heat insulation and sound insulation effects, and is one of the best performance energy-saving glasses. [0004] The key technologies of the existing vacuum glass include: one is edge sealing, the other is the placement of supports, and the third is the acquisition and maintenance of vacuu...

AI Technical Summary

Problems solved by technology

Due to the small space in the vacuum layer of vacuum glass and the transparency of the glass, the protection and activation of the getter needs to be considered, so it is very difficult to place the getter in the vacuum layer

The traditional method of placing the getter in the vacuum glass is to first package the getter under vacuum, and then place it in the groove pre-opened on the glass. After sealing the edge of the vacuum glass, vacuuming, and sealing the suction port , and then use laser or infrared rays to open the package of the getter to activate the getter. The disadvantage of this method is that the encapsulation and placement process of the getter is complicated, the amount of the getter is small, and the appearance and mechanical properties of the glass are affected.

Images