CN202265508U - Vacuum glass with sealed parting strip - Google Patents

Abstract

The utility model discloses a vacuum glass with a sealing spacer. The vacuum glass is compounded by two or more glass plates. The sealing edge is composed of a metallized layer respectively solidified on the surface of two glass plates by sintering and a metal brazing layer between the two metallized layers. The inner side of the sealing edge is also provided with a sealing The spacer, the sealing spacer isolates the sealing edge from the vacuum space in the vacuum glass, and prevents the gas molecules on one side of the sealing edge from entering the vacuum space. The utility model blocks the gas molecules precipitated from the sealing edge outside the vacuum space in the vacuum glass by arranging a sealing spacer on the inner side of the sealing edge, avoiding the influence of the precipitated gas molecules on the vacuum degree of the vacuum space, and ensuring the vacuum The quality of the glass.

Description

Vacuum glass with airtight spacer

technical field

The utility model relates to a vacuum glass, in particular to a vacuum glass in which a spacer is used to isolate the sealing edge from the vacuum space.

Background technique

The applicant has previously invented a method for processing vacuum glass using metal brazing technology. In this method, a metallized layer that is consolidated with the glass plates is first prepared by sintering on the surfaces of the two glass plates to be sealed. , and then use the metal brazing process to weld and connect the two metallized layers to each other, so as to realize the hermetic sealing between the two glass plates.

The vacuum glass processed by the above method is shown in Figure 1(a) and Figure 1(b), in which Figure 1(a) is a vacuum glass with a two-layer structure, and Figure 1(b) is a vacuum glass with a three-layer structure. Taking Figure 1(a) as an example, the periphery of two glass plates 1 is hermetically sealed by the sealing edge 2, and the inner side of the sealing edge 2 is supported by the intermediate support 3 to form a vacuum space. The metallization layer 2-1 where the board 1 is consolidated together and the metal brazing layer 2-2 between the two metallization layers 2-1 constitute.

The above-mentioned vacuum glass processing method, since the metal brazing process is used to complete the hermetic sealing between two adjacent glass plates, and the inner side of the sealing edge will inevitably have flux remaining, therefore, this method has the disadvantages of flux Volatilization or the hidden danger of the vacuum degree of the vacuum glass being reduced due to the release of gas from the flux residue.

Utility model content

Aiming at the deficiencies in the above-mentioned prior art, the purpose of this utility model is to provide a vacuum glass with an improved structure. The vacuum glass can prevent the sealing edge from The gas molecules of the vacuum glass enter the vacuum space of the vacuum glass, thereby maintaining the stability of the vacuum degree of the vacuum glass.

In order to achieve the above object, the technical scheme of the utility model is as follows:

A vacuum glass with a sealing spacer, the vacuum glass is composed of two or more glass plates, and the edges of two adjacent glass plates are hermetically sealed by sealing edges, and the sealing edges It is composed of a metallized layer solidified on the surface of two glass plates by sintering and a metal brazing layer between the two metallized layers. The inner side of the sealing edge is also provided with a sealing spacer close to the sealing edge. The sealing The spacer isolates the sealing edge from the vacuum space in the vacuum glass, and blocks the gas molecules on one side of the sealing edge from entering the vacuum space.

Further, the sealing spacer is made of silicon rubber or fluorine rubber.

Further, the sealing spacer is composed of a strip-shaped protrusion formed on the surface of one of the glass plates, and the strip-shaped protrusion is closely attached to the surface of the other glass plate.

Further, the strip-shaped protrusions are formed by heating low glass powder.

Further, the low-glass powder is added with evaporable or non-evaporable getter powder, and the low-glass powder forms glass strip-shaped convex films on the glass surface by heating, and the strip-shaped convex films formed after heating The getter material is distributed over the surface of the film.

Further, the strip-shaped protrusions are sintered by high-temperature ink.

Further, the sealing spacer is composed of a U-shaped metal strip with an opening facing the sealing edge. The metal strip is made of metal foil. Under the action of its own elasticity, the two sides of the U-shaped section of the metal strip The side edges are closely attached to the surfaces of the two glass plates respectively.

Further, before the two metallized layers are connected by welding, there is pre-set a strip-shaped solder between them, and one side of the strip-shaped solder is inserted in the U-shaped groove of the metal strip, and, along with the metal brazing After the welding is completed, the metal strip is fixed at the same time.

Further, the metal strip with U-shaped section is made of copper or copper alloy.

The height of the above-mentioned sealing spacer is consistent with the thickness of the glass sealing edge.

The utility model blocks the gas molecules precipitated from the sealing edge outside the vacuum space in the vacuum glass by setting the sealing spacer on the inner side of the sealing edge, avoiding the influence of the precipitated gas molecules on the vacuum degree of the vacuum space, and ensuring the vacuum The quality of the glass.

Description of drawings

Figure 1(a) is a schematic diagram of the existing two-layer structure vacuum glass;

Figure 1(b) is a schematic diagram of the existing three-layer structure vacuum glass;

Fig. 2 is the structure schematic diagram of the utility model vacuum glass;

Fig. 3 is a schematic structural diagram of a metal sealing spacer with a U-shaped section;

Fig. 4 is a schematic structural view of the prefabricated metal sealing spacer with U-shaped cross-section and the solder strip.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

On the basis of the existing vacuum glass sealed by metal brazing process shown in Fig. The spacers are in close contact with the surfaces of the two glass plates respectively, and block the gas molecules precipitated at the sealing edge from the vacuum space in the vacuum glass, so as to avoid the decrease of the vacuum degree of the vacuum space caused by these gas molecules.

The structure of the vacuum glass of the present invention is shown in Figure 2, and the sealing spacer 4 is arranged close to the inner side of the sealing edge 2, and is closely connected with the surfaces of the upper and lower glass plates 1 respectively.

The sealing spacer 4 can be made of a rubber strip clamped between two glass plates 1 , or a strip-shaped protrusion formed on the surface of one of the glass plates 1 .

When the sealing spacer 4 is composed of strip-shaped protrusions formed on the surface of one of the glass plates, the strip-shaped protrusions can be formed by heating low glass powder, or can be sintered by high-temperature ink.

For strip-shaped protrusions made of low glass powder, getter powder can also be added to the low glass powder used, so that after the strip-shaped protrusions are formed, the strip-shaped protrusions can block gas molecules from entering the vacuum The vacuum space of the glass can also use the getter material distributed on the surface of the strip-shaped protrusions to trap gas molecules. With the heating of the strip-shaped protrusions, the getter material will be activated. In addition, in order to distribute the getter material added in the low glass powder on the surface of the strip-shaped protrusions as much as possible, the strip-shaped protrusions are shaped The heating temperature is preferably the melting temperature of the low glass powder. At this temperature, the melted low glass powder will first flow to the surface of the glass plate, thereby retaining and consolidating the getter material on the strip-shaped raised surface. .

Referring to Fig. 3, the sealing spacer 4 can also be made of a U-shaped metal strip with the opening facing the sealing edge 2. The metal strip is made of metal foil. Under the action of its own elasticity, the two sides of the U-shaped section of the metal strip The sides are closely attached to the surfaces of the two glass plates 1 respectively. The selected metal foil can be copper foil or copper alloy foil, or metal foil of other materials.

Since the two metallized layers 2-1 on the two glass plates 1 are connected to each other by welding, usually a ribbon-shaped solder is preset therebetween, therefore, in order to facilitate the placement and fixing of the metal strips, as shown in Figure 4, One side of the strip-shaped solder to be preset can be inserted in the U-shaped groove of the metal strip, and like this, along with the completion of metal brazing, the metal strip is also fixed simultaneously.

The above-mentioned examples are only some preferred implementations of the present utility model. In addition, those skilled in the art can also make many other implementations after comprehending the ideas of the present utility model. within the scope of protection.

Claims (2)

1. A vacuum glass with a sealing spacer, the vacuum glass is composed of two or more glass plates, and the adjacent two glass plates are hermetically sealed by sealing edges at the edges, and the sealing The edge is composed of a metallized layer that is respectively solidified on the surfaces of two glass plates by sintering and a metal brazing layer between the two metallized layers, and it is characterized in that the inner side of the sealing edge is close to the sealing edge and also A sealing spacer is provided, which isolates the sealing edge from the vacuum space in the vacuum glass, and prevents gas molecules on one side of the sealing edge from entering the vacuum space. 2. The vacuum glass according to claim 1, characterized in that, the sealing spacer is made of silicon rubber or fluorine rubber. 3. The vacuum glass according to claim 1, wherein the sealing spacer is formed by a strip-shaped protrusion formed on the surface of one of the glass plates, and the strip-shaped protrusion is closely attached to the surface of the other glass plate . 4. The vacuum glass according to claim 3, wherein the strip-shaped protrusions are formed by heating with low glass powder. 5. The vacuum glass according to claim 3, wherein the strip-shaped protrusions are sintered by high-temperature ink. 6. The vacuum glass according to claim 1, wherein the sealing spacer is made of a U-shaped metal strip with an opening facing the sealing edge, the metal strip is made of metal foil, and Under the action of elasticity, the two sides of the U-shaped section of the metal strip are in close contact with the surfaces of the two glass plates. 7. The vacuum glass according to claim 6, characterized in that, before the two metallized layers are connected by welding, there is a ribbon-shaped solder pre-set therebetween, and one side of the ribbon-shaped solder is inserted into the In the U-shaped groove of the metal strip, and, as the metal brazing is completed, the metal strip is fixed at the same time. 8. The vacuum glass as claimed in claim 6 or 7, characterized in that, said U-shaped section metal strip is made of copper or copper alloy.

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