Support-free double bent vacuum glass and manufacturing method thereof

Abstract

The invention discloses support-free double bent vacuum glass and a manufacturing method thereof. The glass consists of two pieces of hermetical bent glass relatively distributed, wherein the middle gap is vacuum. The two pieces of bent glass consist of arched curved surfaces and banding planes at the edges, wherein the arched curved surfaces can be spherical surfaces or double curvature arch-shaped surfaces, and the banding planes at the edges are 5-10mm wide. The periphery of the bent glass can be circular or rectangular. The bent vacuum glass can be used for forming vacuum glass in a vacuum furnace or bleeder holes are distributed on one piece of the bent glass to from vacuum through the bleeder holes. According to the double bent vacuum glass disclosed by the invention, indispensable support in common vacuum glass is cancelled, so that the vacuum glass is higher in strength and more excellent in heat and sound insulating function, and better in practical value, and can be used in building ceilings and some special parts.

Description

technical field [0001] The invention relates to a vacuum glass, in particular to a hyperboloid vacuum glass with high heat insulation and high sound insulation without supports, which is a special structure of vacuum glass and belongs to the field of glass manufacturing. Background technique [0002] Vacuum glass is a glass product with excellent heat insulation, which is used for doors, windows, curtain walls and glass doors of refrigerators in buildings. [0003] At present, the production of vacuum glass generally uses two pieces of flat glass to be sealed with low-melting point glass, and a support is placed between the two pieces of glass, and the gap is evacuated, and the vacuum degree is required to reach 10. -2 Above Pa. A typical vacuum glass structure such as figure 1 as shown, figure 1 The number 101 in the figure represents two sheets of flat glass, 102 represents a support, 103 represents a low melting point glass sealing layer, and 104 represents an air extr...

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Problems solved by technology

Due to the existence of the support, it will bring the following defects: (1) The tiny support can still be seen by the naked eye at close range due to its opacity, which affects the beauty of the glass; (2) There are a large number of supports between the two pieces of glass. All objects are thermal bridges, which increase the thermal conductivity of vacuum glass; (3) Due to the existence of atmospheric pressure, contact stress will be generated at the contact part between the support and the glass, resulting in the generation of Hertzian cracks in the glass, which will affect the reliability of the glass; (4) ) There is still a lack of reliable mechanical deployment methods for the placement of supports. Manual placement is basically used, which is time-consuming and labor-intensive. It is difficult to improve the industrialization and mechanization of vacuum glass.

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