Single tempered flat vacuum glass and preparation method thereof

Abstract

The invention provides single tempered flat vacuum glass which comprises upper glass and lower glass. The upper glass is common glass while the lower glass is tempered glass. At least two edge band frames are arranged in the periphery of a welding face of the lower glass. The peripheries of the upper and lower glass are welded through a low temperature solder. A sealed vacuum layer is formed between the upper and lower glass. Supporters arranged in a dot matrix are arranged in the vacuum layer. The manufacturing method of the vacuum glass provided by the invention is simple in process, the deficiencies in the prior art are solved according to the prepared tempered glass, and the single tempered flat vacuum glass can be produced in batches.

Description

technical field [0001] The invention relates to the technical field of vacuum glass processing, in particular to a tempered flat vacuum glass and a manufacturing method thereof. Background technique [0002] Existing vacuum glass is generally composed of two pieces of flat glass and a vacuum layer in the middle. 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 insulation properties. Heat and sound insulation effect, is the best performing energy-saving glass. [0003] The existing vacuum glass has the following disadvantages: (1) The structure is complex and the process is cumbersome: glass drilling, preparation and welding of suction glass tubes, placement of supports and getters, coating of low-temperature glass solder on the periphery, heating and sealing of the periphery , Heating, vacuuming, exhausting and sealing the pumping port, protecting the pumping po...

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Problems solved by technology

[0003] The existing vacuum glass has the following disadvantages: (1) The structure is complex and the process is cumbersome: glass drilling, preparation and welding of suction glass tubes, placement of supports and getters, coating of low-temperature glass solder on the periphery, heating and sealing of the periphery , Heating, vacuuming, exhausting and sealing the pumping port, protecting the pumping port, unsealing the getter, etc.; (2) The vacuuming process is complicated and the production efficiency is very low: because the pumping port is very thin, the pumping rate is small, and the production efficiency is low; The space formed by the two pieces of glass is not easy to achieve a high degree of vacuum, thereby reducing the heat insulation and sound insulation effects of the vacuum glass. In order to improve the heat insulation performance, a getter has to be used, which increases the complexity and cost of production; (3) Difficult placement of supports: affects transparency, heat insulation, and sound insulation performance; (4) The quality of edge sealing is not high: edge sealing is to apply low-temperature glass solder to the edge interface of two pieces of glass, and use capillary phenomenon under high temperature to make burnt The molten glass solder flows into the gap between two pieces of glass to achieve edge sealing. The main problem is: if the glass solder is unevenly distributed or the internal suction is uneven, and the heating temperature is too high, the inflow of the glass solder will be inconsistent. As a result, the edge seal of the vacuum glass is uneven, and the airtightness is difficult to guarantee; the upper and lower glass are unevenly stressed, and the mechanical strength is not good, which affects the service life of the vacuum glass; The smooth surface is easy to cause poor adhesion of low-temperature glass solder; (5) The final sealing and protection of the air exhaust port is a technical problem and a major drawback of the product. The problems caused by this congenital structural defect are in It cannot be solved fundamentally in the follow-up process

In addition to the above-mentioned common problems in the production process of vacuum glass, the technical problems in the production of tempered vacuum glass also have the following difficulties: 1. The support with a fixed thickness cannot adapt to the gap between the two pieces of glass caused by the deformation of the tempered glass during the thermal strengthening process. Due to irregular changes in the gap, the support cannot evenly bear the atmospheric pressure, or even cannot be positioned to move, and the glass is damaged due to uneven force under atmospheric pressure; Stress relaxation, strength decline, not up to the requirements of tempered glass

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