Microwave-heated planar double-vacuum-layer glass edge-sealed and port-sealed by using sealing grooves, and preparation method thereof

Abstract

The invention relates to microwave-heated planar double-vacuum-layer glass which is edge-sealed and port-sealed by using sealing grooves. The glass comprises upper glass, lower glass, and intermediate glass. Air-exhaust ports are provided on the upper glass and on the intermediate glass. Sealing strips are provided on the peripheries of the lower surfaces of the upper glass and the intermediate glass, and on the peripheries of the air-exhaust ports. Sealing strips are provided on the peripheries of the upper surfaces of the intermediate glass and the lower glass, and at the places corresponding to the air-exhaust ports. The peripheries of the upper glass, the lower glass and the intermediate glass are welded together by using a low-temperature glass solder under normal pressure in a microwave oven. The air-exhaust port is automatically sealed by using a metal solder in a vacuum furnace. Two sealed vacuum layers are formed between the upper glass and the intermediate glass, and between the intermediate glass and the lower glass. The planar double-vacuum-layer glass and the preparation method thereof have simple process. The prepared vacuum glass and tempered vacuum glass can overcome defects of prior arts. Air-tightness of vacuum glass can be effectively ensured. Strength, thermal insulation performance and sound insulation performance of the glass can be enhanced.

Description

technical field [0001] The invention relates to the technical field of glass deep processing, in particular to a flat double-vacuum-layer glass with microwave heating sealing groove edge sealing and a manufacturing method. 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 vacuum fur...

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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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