Microwave-heated convex dual-vacuum-layer glass with edges and openings being sealed by sealing grooves and manufacturing method

Abstract

The invention discloses microwave-heated convex dual-vacuum-layer glass with edges and openings being sealed by sealing grooves. The convex dual-vacuum-layer glass comprises upper glass, lower glass and middle glass, wherein the upper glass and the lower glass are convex glass; the middle glass is planar glass; the upper glass and the middle glass are provided with an extraction opening; the peripheries of the upper surfaces of the upper glass and the middle glass and the extraction opening are provided with sealing strips; sealing grooves are formed in the peripheries of the upper surfaces of the middle glass and the lower glass and in corresponding positions of the extraction opening; the peripheries of the three pieces of glass are welded together in a microwave oven under a normal pressure through a low-temperature glass solder; the extraction opening is automatically enclosed in a vacuum furnace by using a metal solder; and two vacuum layers are formed between the upper glass and the middle glass as well as between the lower glass and the middle glass. The vacuum glass and a manufacturing method thereof are simple in process. Through adoption of the manufactured vacuum glass and toughened vacuum glass, defects in the prior art can be overcome. The air tightness of the vacuum glass can be ensured effectively, and the strength, heat insulation performance and sound insulation performance of the vacuum glass can be enhanced.

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 a microwave-heated sealing groove edge-sealed and a manufacturing method thereof. Background technique [0002] Vacuum glass is a new type of energy-saving glass. Vacuum glass can not only solve the "breathing" problem of insulating glass used in large quantities, but also has good heat and sound insulation performance, high wind pressure resistance, small thickness and long service life. advantage. Vacuum glass is generally composed of two to three pieces of glass, a cavity is formed between two adjacent pieces of glass, and an edge sealing structure is arranged around the glass, and the cavity is evacuated to form a vacuum layer. Vacuum glass can be divided into two types according to the way of forming the vacuum layer. One is the vacuum glass without exhaust port. The edge sealing of this vacuum glass is carried out in a ...

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Problems solved by technology

[0003] The applicant of the present invention disclosed a series of vacuum glass without air extraction port and its manufacturing method in the patent of vacuum glass applied in October, 2012. At high temperature and vacuum, the air and moisture absorbed by the solder, the volatile substances in the solder, the gas dissolved in the solder during the production process, and the decomposition of some oxides in the solder will cause a large number of bubbles in the solder , which greatly weakens the performance of the solder, especially the airtightness, which greatly affects the feasibility of this method

The existing mass-produced vacuum glass is all vacuum glass with an air extraction port, but there are complex manufacturing processes, low air extraction temperature (incomplete air extraction), single-piece vacuuming, high cost, low production capacity, and inability to make toughened vacuum glass. Cons of glass etc.

[0004] The patent for vacuum glass filed by the applicant in October 2012 discloses a series of vacuum glass welded by microwave heating and its manufacturing method, but microwave heating is prone to the phenomenon of ionization and sparking of thin gas under vacuum

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