CN107542375A - A kind of curved face type vacuum glass - Google Patents

Abstract

A kind of curved face type vacuum glass, including upper strata glass, lower floor's glass, encapsulant, form vacuum chamber between upper strata glass and lower floor's glass, the center section surface of upper strata glass and lower floor's glass is curved surface and thickness of glass gradually changes from center to edge.Curved face type vacuum glass of the present invention has advantages below：Curved surface is full smooth surface, and inside glass is not in stress mutation；Can stress that is balanced and reducing inside glass, improve the intensity of finished product；Can utilize, which increases thickness of glass into vacuum chamber, reduces the outside raised degree of glass, so as to reduce finished product gross thickness；Curved surface is full smooth surface, and vacuum chamber has good light transmittance and aesthetics without internal support；With good heat-insulated, sound insulation property.

Description

A curved vacuum glass

technical field

The invention belongs to the field of building material products and relates to the design and manufacture technology of vacuum glass with good heat insulation and sound insulation performance.

Background technique

Vacuum glass has better heat insulation and sound insulation performance than insulating glass. Most of the current vacuum glass adopts the design and manufacture technology of planar vacuum glass (also called flat vacuum glass). The cross-section of a typical planar vacuum glass is shown in Figure 1. . Wherein, the interior of the vacuum cavity between the upper plane glass and the lower plane glass is supported by many internal supports. Due to the pressure difference inside and outside the planar vacuum glass, the internal support in the planar vacuum glass is essential. This is because the glass material has better compression resistance but poor bending resistance. If there is no internal support in the vacuum chamber of the planar vacuum glass, the farther away from the edge of the glass, the greater the bending force on the glass. Under the bending force caused by the pressure difference between the inside and outside, the planar vacuum glass is easily broken. Due to the many internal supports distributed in the vacuum chamber, the number of internal supports per square meter is more than 1000, and they are in direct contact with the upper flat glass and the lower flat glass. The planar vacuum glass has the following disadvantages: 1. Vacuum The internal support inside the cavity will increase the heat transfer and sound transfer area, and reduce the heat insulation and sound insulation performance of the vacuum glass. 2. The internal support inside the vacuum chamber will reduce the light transmittance and aesthetics of the vacuum glass. 3. Based on the above two points, the internal support inside the vacuum chamber is usually very small, which increases the difficulty of the manufacturing process and reduces the qualified rate of vacuum glass products.

In order to improve the deficiencies of the planar vacuum glass, people are committed to removing the internal support inside the vacuum chamber of the planar vacuum glass. At present, there are mainly the following patents in our country.

Chinese patent CN103288337A discloses a hyperboloid vacuum glass without a support and a manufacturing method thereof, as shown in FIG. 2 . This kind of curved vacuum glass is made of two pieces of the same curved glass that are oppositely arranged, the convex faces are butted outwards and the periphery is sealed, and the gap in the middle is a vacuum chamber. The curved surface is a spherical surface or a three-centered arch surface, and the periphery of the curved glass can be circular or rectangular. This kind of curved vacuum glass saves the necessary supports in the planar vacuum glass. However, the curved vacuum glass provided by this invention has a large amount of outward protrusion, which makes the total thickness of the finished product thicker and takes up a lot of space; the curved surface also has limitations. For example, for a rectangular finished product, if a spherical surface is used It will not match the shape of the finished product. If two mutually perpendicular three-centered arches are used, there will be an intersection line on the surface of the curved surface, which will cause a sudden stress change inside the glass and affect the light transmittance and aesthetics; the two curved glasses are the same, and the curved surface The glass is of equal thickness, and the curved surface is limited to a spherical surface or a three-centered arch surface, etc., all of which have limitations in optimizing and improving the internal stress distribution of the glass. Therefore, there is still room for improvement in its effect.

Chinese patent CN 105776891 A discloses a vacuum glass without a support and a preparation method thereof, as shown in FIG. 3 . The curved surface of this kind of curved vacuum glass also adopts a spherical surface or a three-centered arch surface. In order to reduce the overall thickness of the finished product, the convex surface of the second convex surface glass is located on the same side as the convex surface of the first convex surface glass layer. This kind of curved vacuum glass also saves the necessary supports in the flat vacuum glass. However, the convex surface of the vacuum glass in this invention is located on the same side, and the glass protruding into the vacuum chamber is more likely to be bent and broken under the action of the internal and external pressure difference; all the limitations existing in the Chinese patent CN103288337A have not been significantly improved.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a curved vacuum glass.

A curved vacuum glass according to the present invention comprises an upper glass, a lower glass, an edge support, and a sealing material, and a vacuum chamber is formed between the upper glass and the lower glass, and is characterized in that: the surface of the middle part of the upper glass and the lower glass is a curved surface and the glass thickness changes gradually from the center to the edge.

The edge portions of the upper glass and the lower glass of the present invention are planes.

The middle part and the edge part of the upper glass or the lower glass of the present invention are integrated and obtained by simultaneous molding.

The curved surface of the upper glass surface and the lower glass surface of the present invention can be a simple smooth curved surface or a complex smooth curved surface obtained by a curved surface modeling method, the curved surfaces can be the same or different, and the convex directions of the curved surfaces can be the same or different. The glass can be the same or different.

In the present invention, the sealing material for the gap between the edge portion of the upper layer glass, the edge portion of the lower layer glass and the support is sealed by welding or gluing, and various end face sealing methods can be used, such as groove type sealing, T type sealing, L-shaped seal, flat seal, etc.

The upper glass or the lower glass of the present invention is provided with a suction nozzle or an exhaust port for extracting gas in the vacuum chamber or injecting inert gas into the vacuum chamber. Or face seal in a vacuum furnace to get the vacuum.

The edge support of the present invention can be a planar circular column, or an independent column scattered along the edge, and the material of the edge support can be glass, bakelite, ceramics, metal, composite material, etc.

The present invention can place getter in the vacuum chamber to maintain the vacuum degree in the vacuum chamber.

In the present invention, one or more interlayer glasses can be added between the upper layer glass and the lower layer glass, and one or more through holes can be set in the interlayer glass to form a multi-vacuum cavity curved surface vacuum glass product.

The curved vacuum glass of the present invention can be made into products of various shapes as required, such as square, rectangular, polygonal, circular or irregular shapes.

The vacuum chamber of the curved vacuum glass of the present invention does not need an internal support; the curved surface adopts a completely smooth curved surface; the surface of the curved glass can be convex in any direction; the thickness of the curved glass can be changed arbitrarily; The thickness variation optimizes the stress distribution inside the glass. Therefore, the present invention has the following advantages: (1) The curved surface is a completely smooth curved surface, and there will be no stress mutation inside the glass. (2) It can balance and reduce the stress inside the glass and improve the strength of the finished product. (3) Increase the glass thickness into the vacuum chamber to reduce the convexity of the glass, thereby reducing the total thickness of the finished product. (4) The curved surface is completely smooth, without internal supports, and has good light transmittance and aesthetics. (5) It has good heat insulation and sound insulation performance.

Description of drawings

Figure 1 is a schematic cross-sectional view of a typical planar vacuum glass.

Fig. 2 is a schematic cross-sectional view of Chinese patent CN103288337A.

Fig. 3 is a schematic cross-sectional view of Chinese patent CN 105776891A.

Fig. 4 is a schematic cross-sectional view of curved vacuum glass in the present invention.

Fig. 5 is a schematic diagram of the shape of the product in the present invention. Among them, (a) is a square curved vacuum glass product, (b) is a rectangular curved vacuum glass product, (c) is a circular curved vacuum glass product, and (d) is an irregular curved vacuum glass product.

Fig. 6 is a schematic diagram of Embodiment 1 of the present invention.

Fig. 7 is a schematic diagram of Embodiment 2 of the present invention.

Fig. 8 is a schematic diagram of Embodiment 3 of the present invention.

Fig. 9 is a schematic diagram of Embodiment 4 of the present invention.

Fig. 10 is a schematic diagram of Embodiment 5 of the present invention.

Fig. 11 is a schematic diagram of Embodiment 6 of the present invention.

In the figure, 1 is the upper glass, 2 is the vacuum chamber, 3 is the suction nozzle or exhaust port, 4 is the sealing material, 5 is the lower glass, 6 is the edge support, 7 is the internal support inside the vacuum chamber, 8 It is interlayer glass, and 9 is a through hole.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Example 1.

The surface of the middle part of the upper glass 1 or the lower glass 5 of the curved vacuum glass in Fig. 6 is a spherical cap surface, the outer spherical cap surface is convex outward, and the inner spherical cap is convex facing the interior of the vacuum chamber. The edge part is a plane circular cylinder, and the middle part and the edge part are integrally formed at the same time; the edge support 6 is a plane circular cylinder. The end faces are sealed in a vacuum furnace, and the gap between the edge portion of the upper layer glass 1 and the edge portion of the lower layer glass 5 and the edge support 6 is sealed with the end face of the sealing material 4 .

Example 2.

The inner and outer surfaces of the middle part of the upper glass 1 or the lower glass 5 of the curved vacuum glass in Fig. 7 are NURBS curved surfaces, the outer NURBS curved surface is convex outward, and the inner NURBS curved surface is convex to the inside of the vacuum chamber. The edge part is a planar rectangular ring cylinder, and the middle part and the edge part are integrally formed at the same time; the edge support 6 is a plane rectangular ring cylinder. Weld the suction nozzle 3 on the upper glass 1 and communicate with the vacuum chamber 2; seal the gap between the edge part of the upper glass 1, the edge part of the lower glass 5 and the edge support 6 with the end face of the sealing material 4; extract the vacuum chamber 2 The gas inside or inject inert gas; the suction nozzle 3 is closed.

Example 3.

As shown in Fig. 8, this embodiment is based on embodiment 2, changing the glass surface inside the vacuum chamber into a plane, and making a curved vacuum glass product by the method of embodiment 2.

Example 4.

As shown in Figure 9, this embodiment is based on the second embodiment, the glass surface inside the vacuum chamber is raised away from the vacuum chamber, the edge support is omitted, and the curved vacuum glass product is made by the method of the second embodiment.

Example 5.

As shown in Fig. 10, this embodiment is based on embodiment 2, changing the outer glass surface into a plane, and making a curved vacuum glass product by the method of embodiment 2.

Example 6.

As shown in Figure 11, this embodiment is based on embodiment 4, adding one or more pieces of interlayer glass 8, and one or more through holes 9 are arranged on the interlayer glass, and the method of embodiment 4 is used. Formed into multi-vacuum cavity curved vacuum glass products.

The above several specific implementations do not include all the solutions of the present invention, and all specific implementations according to the idea of the present invention are under protection.

Claims (7)

1. A curved vacuum glass, comprising an upper glass, a lower glass, an edge support, a sealing material, a vacuum cavity is formed between the upper glass and the lower glass, and it is characterized in that the surface of the middle part of the upper glass and the lower glass is a curved surface and the glass The thickness changes gradually from the center to the edges. 2. The curved vacuum glass according to claim 1, characterized in that the edge portions of the upper glass and the lower glass are planes. 3. The curved vacuum glass according to claim 1, characterized in that the middle part and the edge part of the upper glass or the lower glass are integral and obtained by molding at the same time. 4. The curved vacuum glass according to claim 1, characterized in that the curved surface of the middle part of the upper glass and the lower glass is a simple smooth curved surface or a complex smooth curved surface obtained by a curved surface modeling method, the curved surfaces are the same or different, The protruding directions of the curved surfaces are the same or different, and the upper layer of glass is the same or different from the lower layer of glass. 5. The curved vacuum glazing according to claim 1, characterized in that said edge supports are planar circular cylinders, or independent cylinders scattered along the edges. 6. The curved vacuum glass according to claim 1, characterized in that one or more interlayer glasses are added between the upper glass and the lower glass to form a multi-cavity curved vacuum glass. 7. The curved vacuum glass according to claim 1, characterized in that said curved vacuum glass finished product is square, rectangular, polygonal, circular or irregular.