Vacuum glass manufacturing method and vacuum glass

Abstract

The invention relates to the field of vacuum glass manufacturing, and discloses a vacuum glass manufacturing method which comprises the following steps: arranging a sealing material at the peripheral edge of an upper glass plate and / or a lower glass plate; arranging an exhaust support piece capable of being compressed and deformed on the lower glass plate; the upper glass plate is placed on the lower glass plate to form a vacuum glass assembly, and the height of the exhaust supporting piece in the assembly is larger than the total thickness of the sealing material, so that a gas escape channel is formed between the upper glass plate and the lower glass plate; feeding the assembly into a vacuum chamber, vacuumizing and staying for a preset time, so that gas between the upper glass plate and the lower glass plate escapes from a gas escape channel; pressure is applied to the surface of the assembly, so that the peripheral edges of the upper glass plate and the lower glass plate are tightly attached, and then the assembly is welded and edge-sealed. The upper glass plate and the lower glass plate are separated through the exhaust supporting piece, so that a gas escape channel is formed between the upper glass plate and the lower glass plate, and the problem of how to efficiently vacuumize a vacuum cavity between the upper glass plate and the lower glass plate is solved.

Description

Technical Field

[0001] The invention relates to the field of vacuum glass manufacturing, and in particular to a vacuum glass manufacturing method and vacuum glass. Background Art

[0002] The vacuum glass structure includes at least two glass plates: an upper glass plate and a lower glass plate, and also includes a plurality of intermediate supports arranged between the upper glass plate and the lower glass plate. The four edges of the upper glass plate and / or the lower glass plate facing each other are provided with edge sealing materials for welding and edge sealing, and the intermediate supports are distributed on the inner side of the edge sealing materials. In the production process of vacuum glass, after the upper glass plate and the lower glass plate are combined and before the four edges of the two glass plates are welded and sealed, the air between the two glass plates needs to be discharged first, so as to achieve a higher vacuum degree, and then the welding and edge sealing of the four edges of the glass can be carried out, and finally a vacuum glass with a high vacuum inner cavity is made.

[0003] Due to mechanical reasons, the height of the middle support cannot be higher than the thickness of the edge sealing material. This means that during the assembly process, under the action of its own gravity, the edge sealing material on the four sides of the upper glass plate will stick together with the edge sealing material on the four sides of the lower glass plate, which will prevent the gas between the upper and lower glass plates from escaping from the vacuum chamber to the outside, thereby greatly extending the waiting time for exhaust before the edge sealing process, seriously affecting production efficiency. Therefore, how to efficiently evacuate the vacuum chamber between the upper and lower glass plates is an urgent problem that technicians in this field need to solve. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a method for manufacturing vacuum glass, by arranging an exhaust support member with a thickness greater than the vacuum cavity and having compression deformation capability in the vacuum cavity of the vacuum glass, so that the upper glass plate of the vacuum glass is pressed on the exhaust support member instead of directly pressed on the lower glass plate after the vacuum glass is assembled, thereby generating a gas escape channel between the upper glass plate and the lower glass plate, thereby facilitating efficient evacuation of the vacuum cavity between the upper and lower glass plates in subsequent process steps.

[0005] To achieve the above object, the technical solution of the present invention is: A method for manufacturing vacuum glass comprises the following steps: S101: placing sealing materials on the periphery of the upper glass plate and / or the lower glass plate; S102: a getter is arranged on the upper glass plate or the lower glass plate, and an exhaust support is arranged on the upper glass plate or the lower glass plate, wherein the exhaust support is compressibly deformable or compressibly destroyed; S103: placing an upper glass plate on a lower glass plate to form a vacuum glass assembly, wherein the height of the exhaust support in the vacuum glass assembly is greater than the total thickness of the sealing material, or the total height of the exhaust support and the getter in the vacuum glass assembly is greater than the total thickness of the sealing material, so that gas escape channels are generated around the periphery of the upper glass plate and the lower glass plate; S104: sending the vacuum glass assembly into a vacuum chamber, evacuating the chamber and leaving the chamber for a predetermined time, so that the gas between the upper glass plate and the lower glass plate escapes from the gas escape channel; S105: applying pressure to the surface of the vacuum glass assembly after evacuation, so that the upper glass plate and the lower glass plate are closely attached to each other by the sealing material, and then welding and sealing the edges of the vacuum glass assembly.

[0006] The present invention is further configured as follows: in S104 and S105, the air pressure in the vacuum chamber is less than 30Pa.

[0007] The present invention is further configured as follows: in S104, the predetermined time is not less than 1 minute.

[0008] The present invention is further configured such that: in S105, the pressure applied to the surface of the vacuum glass assembly after evacuation is evenly distributed.

[0009] The present invention is further configured as follows: between S103 and S104, it also includes S1031: sending the vacuum glass assembly into a preheating chamber and preheating the vacuum glass assembly at a temperature of 50° C.-300° C.

[0010] The present invention is further configured such that: the exhaust support member is located at an edge or a corner of the vacuum glass assembly and at an inner side of the sealing material, and the number of the exhaust support member is at least one.

[0011] The present invention is further configured as follows: the getter is in a strip shape, and the exhaust support is sleeved on the getter.

[0012] The present invention is further configured as follows: in S103 and S104, the height of the gas escape channel is not less than 0.3 mm.

[0013] The present invention is further configured as follows: the exhaust support member is a wave spring, a pot piece, or a compression spring.

[0014] The present invention is further configured such that: the exhaust support member is made of foamed nickel, foamed copper or glass powder.

[0015] The present invention also provides a vacuum glass, which is manufactured by any one of the above methods.

[0016] In summary, the beneficial effects achieved by the present invention are as follows: (1) The thickness of the exhaust support in the vacuum glass assembly is greater than the total thickness of the sealing material, or the total height of the exhaust support and the getter in the vacuum glass assembly is greater than the total thickness of the sealing material, and the sealing material between the upper glass plate and the lower glass plate in the vacuum glass assembly will not be in direct contact, that is, the exhaust support separates the upper and lower glass plates, so that the gas between the upper and lower glass plates can be quickly discharged through the gas escape channel formed by the exhaust support, which greatly shortens the exhaust waiting time before the welding edge sealing process and significantly improves the production efficiency of vacuum glass; (2) The gas escape channel is formed by using an exhaust support member, and there is no need to set up any other separation device in the vacuum chamber to maintain a certain gap between the two pieces of glass to maintain the gas escape channel, thereby reducing the complexity of the vacuum chamber structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a top view of the vacuum glass assembly in the first embodiment of the present invention without the upper glass plate; Figure 2 It is a side view of the vacuum glass assembly in the first embodiment of the present invention; Figure 3 It is a top view of the vacuum glass assembly in the second embodiment of the present invention without the upper glass plate; Figure 4 It is a side view of the vacuum glass assembly in the second embodiment of the present invention; Figure 5 A top view of the vacuum glass assembly without the upper glass plate in the first implementation mode of the third embodiment of the present invention; Figure 6 It is a side view of a vacuum glass assembly in the first implementation mode of the third embodiment of the present invention; Figure 7 This is a top view of the vacuum glass assembly without the upper glass plate in the second implementation mode of Example 3 of the present invention; Figure 8 It is a side view of a vacuum glass assembly in the second implementation manner of Example 3 of the present invention.

[0019] In the figure: 1. vacuum glass assembly; 11. upper glass plate; 12. lower glass plate; 13. sealing material; 14. gas escape channel; 2. exhaust support; 3. getter. Implementation

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "up", "down", "inside", "outside", "bottom", etc. used in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] It should be noted that the embodiments of the present invention and the features involved in the embodiments can be combined with each other without conflict. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. Example

[0022] A method for manufacturing vacuum glass comprises the following steps: S101 : Sealing materials are provided on the four peripheral edges of the lower glass plate 12 .

[0023] As attached Figure 2 As shown, in this embodiment, the four edges of the lower glass plate 12 are provided with sealing materials 13, and the sealing materials 13 are low-melting-point glass powder, which are provided on the four edges of the upper surface of the lower glass plate 12 by coating.

[0024] In another embodiment, the sealing material 13 is low-melting-point glass powder, which is coated on the four edges of the lower surface of the upper glass plate 11 .

[0025] In another embodiment, the sealing material 13 may also be a metal sealing material. The metal sealing material generally comprises three layers, namely, a first metallization layer, a metal welding strip, and a second metallization layer from top to bottom. The first metallization layer is disposed on the four peripheral edges of the side of the upper glass plate 11 facing the lower glass plate 12 by sintering or coating; the second metallization layer is disposed on the four peripheral edges of the side of the lower glass plate 12 facing the upper glass plate 11 by sintering or coating; the metal welding strip is disposed on the first metallization layer or the second metallization layer by spot welding.

[0026] S102: Arrange a getter 3 and an exhaust support 2 on the lower glass plate 12, wherein the exhaust support 2 can be compressed and deformed or can be compressed and destroyed.

[0027] The getter 3 can be in various forms such as a strip-shaped getter or a disc-shaped getter, and is usually arranged inside the sealing material 13 and close to the edge of the glass. Figure 1 , 2 As shown, the exhaust support member 2 is a wave spring, which can be compressed and deformed. There are four of them, which are arranged at the four corners of the lower glass plate 12 and located on the inner side of the sealing material 13 .

[0028] In other embodiments, there is one exhaust support member 2, which is disposed on one edge of the lower glass plate 12. There may also be two exhaust support members 2, which may be disposed on two opposite edges of the lower glass plate 12. There may be three exhaust support members 2, which may be disposed on three adjacent sides or three corners of the lower glass plate 12.

[0029] In other embodiments, the exhaust support member 2 may be a pot piece, a compression spring or other parts with compression deformation capability. The exhaust support member 2 may also be made of compressible and destructible materials such as nickel foam and copper foam. The shape of the exhaust support member 2 may be cylindrical, semi-cylindrical, cylindrical, semi-cylindrical, prismatic, spherical, semi-spherical, elliptical or drum-shaped.

[0030] In other embodiments, the getter 3 and the exhaust support 2 can both be arranged on the upper glass plate 11. Alternatively, the getter 3 is arranged on the upper glass plate 11, and the exhaust support 2 is arranged on the lower glass plate 12. Alternatively, the exhaust support 2 is arranged on the upper glass plate 11, and the getter 3 is arranged on the lower glass plate 12. The above-mentioned arrangements have no essential difference for this solution.

[0031] S103: placing the upper glass plate 11 on the lower glass plate 12 to form a vacuum glass assembly 1, wherein the height of the exhaust support 2 in the vacuum glass assembly 1 is greater than the total thickness of the sealing material 13, so that gas escape channels 14 are generated around the peripheries of the upper glass plate 11 and the lower glass plate 12.

[0032] like Figure 2 As shown, the upper glass plate 11 is placed on the lower glass plate 12 to form a vacuum glass assembly 1. The height of the exhaust support 2 in the vacuum glass assembly 1 is greater than the thickness of the sealing material 13, that is, the upper glass plate 11 is pressed on the exhaust support 2 without contacting the sealing material 13. Before the upper glass plate 11 and the lower glass plate 12 are welded and sealed, the gap between the sealing material 13 on the lower glass plate 12 and the upper glass plate 11 is the gas escape channel 14.

[0033] It was measured in actual tests that in the vacuum glass assembly 1, preferably, the height of the exhaust support 2 needs to make the height of the gas escape channel 14 not less than 0.3mm. When the height of the gas escape channel 14 is lower than 0.3mm, the gas escape efficiency is not significantly improved compared to the gas escape efficiency without the gas escape channel 14. Theoretically, the height of the exhaust support 2 can be any value as long as it can be fixed in the inner cavity of the vacuum glass after compression, but in actual tests, it was found that when the height of the exhaust support 2 makes the height of the gas escape channel 14 greater than 20mm, the gas escape efficiency is no longer improved. Therefore, preferably, the height of the gas escape channel 14 should be less than or equal to 20mm. In this embodiment, the height of the gas escape channel 14 is 0.5mm.

[0034] S1031: Send the vacuum glass assembly 1 into a preheating chamber and preheat the vacuum glass assembly 1 at a temperature of 50°C-300°C.

[0035] Preheating the vacuum glass assembly 1 can increase the activity of the gas on the surface of each component material of the vacuum glass assembly 1. During the gas escape process of the preheated vacuum glass assembly 1, the gas adsorbed on the surface of the upper glass plate 1, the surface of the lower glass plate 2, and the surface of the support can be fully released, which is beneficial to achieving a higher vacuum degree in the vacuum cavity after welding and edge sealing. In this embodiment, the preheating temperature can be 80°C.

[0036] S104 : The vacuum glass assembly 1 is sent into a vacuum chamber to be evacuated and stay there for a predetermined time, so that the gas between the upper glass plate 11 and the lower glass plate 12 can escape from the gas escape channel 14 .

[0037] The vacuum chamber is connected to a vacuum pumping device, which can reduce the air pressure in the vacuum chamber to below 30Pa, thereby forming a higher vacuum degree. At the same time, the vacuum glass assembly 1 sent into the vacuum chamber needs to stay in the vacuum chamber for a sufficiently long time so that the gas inside and on the surface of the vacuum glass assembly 1 can fully escape, ensuring that the vacuum glass finally manufactured has a higher vacuum degree. However, if the vacuum glass assembly 1 stays in the vacuum chamber for too long, it will extend the time required for the process and seriously reduce production efficiency. In actual experiments, it was found that if the predetermined time for the vacuum glass assembly 1 to stay in the vacuum chamber is less than 1 minute, the air between the two pieces of glass cannot fully escape, resulting in a lower vacuum degree of the vacuum glass after sealing; and if the predetermined time of stay is more than 30 minutes, the production efficiency is reduced. Therefore, it is best to have the vacuum glass assembly 1 stay for a predetermined time of 1-30 minutes after being sent into the vacuum chamber. In this embodiment, the stay time can be 30 minutes.

[0038] S105: applying pressure to the surface of the vacuum glass assembly 1 after evacuation, so that the upper glass plate 11 and the lower glass plate 12 are closely attached to each other at the edges through the sealing material 13, and then welding and sealing the edges of the vacuum glass assembly 1.

[0039] Applying pressure to the surface of the vacuum glass assembly 1 after evacuation is used to deform the exhaust support 2 so that the height of the exhaust support 2 is compressed to be consistent with the thickness of the sealing material 13, and the sealing materials 13 on the upper glass plate 11 and the lower glass plate 12 are also tightly fitted, so that the edges of the glass can be welded and sealed. On the other hand, applying pressure to the surface of the vacuum glass assembly 1 also has the effect of ensuring that the positions of the upper glass plate 11 and the lower glass plate 12 will not be displaced when welding and sealing the edges of the vacuum glass assembly 1, and it is easier to carry out.

[0040] Specifically, the pressure is large enough so that the height of the exhaust support 2 can be compressed to be consistent with the thickness of the sealing material 13, and the pressure should be evenly distributed on the upper surface of the upper glass plate 11, or the lower surface of the lower glass plate 12, or evenly applied to the upper surface of the upper glass plate 11 and the lower surface of the lower glass plate 12 at the same time. The evenly distributed pressure can ensure that the upper glass plate 11 and the lower glass plate 12 will not deviate after being pressed. The pressure can be applied to the surface of the vacuum glass assembly 1 in the form of a whole piece of film covering the upper glass plate 11, or in the form of multiple rubber heads pressing down evenly. Under the action of this pressure, the intermediate support is also compressed to produce a small deformation, thereby ensuring that the intermediate support can fully support the vacuum glass in a normal atmospheric pressure environment after welding is completed, so that the internal and external forces of the vacuum glass are uniform and stable, which is conducive to improving the service life of the vacuum glass.

[0041] The implementation principle of the above embodiment is: The height of the exhaust support 2 in the vacuum glass assembly 1 is greater than the total thickness of the sealing material 13. After the vacuum glass is assembled, the upper glass plate 11 will be pressed on the exhaust support 2 instead of directly pressing on the lower glass plate 12, that is, the exhaust support 2 separates the upper and lower glass plates, so that the gas between the upper and lower glass plates can be quickly discharged through the gas escape channel 14 formed by the exhaust support 2, which greatly shortens the exhaust waiting time before the welding and edge sealing process, and significantly improves the production efficiency of the vacuum glass.

[0042] When the vacuuming is completed and the edge welding is ready, the exhaust support 2 is clamped and fixed in the vacuum chamber under the pressure of the upper glass plate 11 and the lower glass plate 12, without adding additional process steps, thus simplifying the production process.

[0043] The gas escape channel 14 is formed by using the exhaust support 2, and there is no need to set any other separation device in the vacuum chamber to maintain a certain gap between the two pieces of glass to maintain the gas escape channel, thereby reducing the complexity of the vacuum chamber structure. Example

[0044] As attached Figure 3 and attached Figure 4 As shown, the difference between this embodiment and the first embodiment is only the style of the exhaust support member 2. In this embodiment, the exhaust support member 2 is an L-shaped wave structure. In this embodiment, two exhaust support members 2 are provided, and the two exhaust support members 2 are provided at two corners of the lower glass plate 12 and arranged along the diagonal line. Example

[0045] A method for manufacturing vacuum glass comprises the following steps: S101: Sealing materials are arranged on the four edges of the lower glass plate.

[0046] As attached Figure 6 As shown, in this embodiment, the four edges of the lower glass plate 12 are provided with sealing materials 13, and the sealing materials 13 are low-melting-point glass powder, which are provided on the four edges of the upper surface of the lower glass plate 12 by coating.

[0047] S102: Arrange a getter 3 and an exhaust support 2 on the lower glass plate 12, wherein the exhaust support 2 is compressible and deformable.

[0048] like Figure 5 , 6 As shown, the getter 3 is a strip-shaped getter, the number of which is 2, which is arranged on the opposite sides of the lower glass plate 12 and located on the inner side of the sealing material 13. The exhaust support 2 is cylindrical, and the material is metal, such as stainless steel, etc. The exhaust support 2 can be compressed and deformed. The number of exhaust supports 2 is 4, which are respectively sleeved on both ends of the two getters 3.

[0049] There can also be one getter 3, which is arranged on one side of the lower glass plate 12 and located inside the sealing material 13, and there can be two exhaust support members 2, which are sleeved on both ends of the getter 3. There can also be three getter 3, which are arranged on three adjacent sides of the lower glass plate 12 and located inside the sealing material 13, and there can be six exhaust support members 2, which are sleeved on both ends of the three getter 3. There can also be four getter 3, which are arranged on four sides of the lower glass plate 12 and located inside the sealing material 13, and there can be four exhaust support members 2, which are sleeved on the getter 3 respectively.

[0050] The arrangement order of the getter 3 and the exhaust support 2 is not limited, and the getter 3 can be arranged on the lower glass plate 12 first, and then the exhaust support 2 is sleeved on both ends of the getter 3, or the exhaust support 2 can be sleeved on both ends of the getter 3 first, and then they are arranged together on the lower glass plate 12. The getter 3 and the exhaust support 2 can also be arranged on the upper glass plate 11.

[0051] In other embodiments, Figure 7 , 8 As shown, the getter 3 is in the shape of a disc, and there are four of them, which are arranged at the four corners of the lower glass plate 12 and located on the inner side of the sealing material 13. There are also four exhaust support members 2, which are respectively arranged on the four getters 3. The exhaust support member 2 can be a part with compression deformation ability such as a pot piece, a compression spring, etc. The shape of the exhaust support member 2 can be various shapes such as cylindrical, semi-cylindrical, cylindrical, semi-cylindrical, prismatic, spherical, semi-spherical, elliptical or drum. In this embodiment, the exhaust support member 2 is a square shape.

[0052] S103: placing the upper glass plate 11 on the lower glass plate 12 to form a vacuum glass assembly 1, wherein the total height of the exhaust support 2 and the getter 3 in the vacuum glass assembly 1 is greater than the total thickness of the sealing material 13, thereby generating gas escape channels 14 around the peripheries of the upper glass plate 11 and the lower glass plate 12.

[0053] like Figure 6 and Figure 8 As shown, the upper glass plate 11 is placed on the lower glass plate 12 to form a vacuum glass assembly 1. The total height of the exhaust support 2 and the getter 3 in the vacuum glass assembly 1 is greater than the thickness of the sealing material 13, that is, the upper glass plate 11 is pressed on the exhaust support 2 without contacting the sealing material 13. Before the upper glass plate 11 and the lower glass plate 12 are welded and sealed, the gap between the sealing material 13 on the lower glass plate 12 and the upper glass plate 11 is the gas escape channel 14.

[0054] It was measured in actual tests that in the vacuum glass assembly 1, preferably, the total height of the exhaust support 2 and the getter 3 needs to make the height of the gas escape channel 14 not less than 0.3mm. When the height of the gas escape channel 14 is lower than 0.3mm, the gas escape efficiency is not significantly improved compared to the gas escape efficiency without the gas escape channel 14. Theoretically, the total height of the exhaust support 2 and the getter 3 can be any value as long as it can be fixed in the inner cavity of the vacuum glass after compression, but in actual tests, it was found that when the height of the exhaust support 2 makes the height of the gas escape channel 14 greater than 20mm, the gas escape efficiency is no longer improved. Therefore, preferably, the height of the gas escape channel 14 should be less than or equal to 20mm. In this embodiment, the height of the gas escape channel 14 is 0.5mm.

[0055] S1031: Send the vacuum glass assembly 1 into a preheating chamber and preheat the vacuum glass assembly 1 at a temperature of 50°C-300°C.

[0056] Preheating the vacuum glass assembly 1 can increase the activity of the gas on the surface of each component material of the vacuum glass assembly 1. During the gas escape process of the preheated glass, the gas adsorbed on the surface of the upper glass plate 11, the surface of the lower glass plate 12, and the surface of other components can be fully released, which is beneficial for the vacuum cavity after welding and edge sealing to reach a higher vacuum degree. In this embodiment, the preheating temperature can be 80°C.

[0057] S104 : The vacuum glass assembly 1 is sent into a vacuum chamber to be evacuated and stay there for a predetermined time, so that the gas between the upper glass plate 11 and the lower glass plate 12 can escape from the gas escape channel 14 .

[0058] The vacuum chamber is connected to a vacuum pumping device, which can reduce the air pressure in the vacuum chamber to below 30Pa, thereby forming a higher vacuum degree. At the same time, the vacuum glass assembly 1 sent into the vacuum chamber needs to stay in the vacuum chamber for a sufficiently long time so that the gas inside and on the surface of the vacuum glass assembly 1 can fully escape, ensuring that the vacuum glass finally manufactured has a higher vacuum degree. However, if the vacuum glass assembly 1 stays in the vacuum chamber for too long, it will extend the time required for the process and seriously reduce production efficiency. In actual experiments, it was found that if the predetermined time for the vacuum glass assembly 1 to stay in the vacuum chamber is less than 1 minute, the air between the two pieces of glass cannot fully escape, resulting in a lower vacuum degree of the vacuum glass after sealing; and if the predetermined time of stay is more than 30 minutes, the production efficiency is reduced. Therefore, it is best to have the vacuum glass assembly 1 stay for a predetermined time of 1-30 minutes after being sent into the vacuum chamber. In this embodiment, the stay time can be 30 minutes.

[0059] S105: applying pressure to the surface of the vacuum glass assembly 1 after evacuation, so that the upper glass plate 11 and the lower glass plate 12 are closely attached to each other at the edges through the sealing material 13, and then welding and sealing the edges of the vacuum glass assembly 1.

[0060] Applying pressure to the vacuumed glass surface is used to deform the exhaust support 2, so that the total height of the exhaust support 2 and the getter 3 is compressed to be consistent with the thickness of the sealing material 13, and the sealing materials 13 on the upper glass plate 11 and the lower glass plate 12 are also tightly fitted, so that the four edges of the vacuum glass assembly 1 can be welded and sealed. On the other hand, applying pressure to the surface of the vacuum glass assembly 1 also has the effect of ensuring that the position of the glass will not be displaced during the glass welding and sealing, and it is easier to carry out.

[0061] Specifically, the pressure is such that the sum of the height of the exhaust support 2 after compression and the height of the getter 3 is consistent with the thickness of the sealing material 13, and the pressure should be evenly distributed on the upper surface of the upper glass plate 1, or the lower surface of the lower glass plate 12, or evenly applied to the upper surface of the upper glass plate 1 and the lower surface of the lower glass plate 12 at the same time. The evenly distributed pressure can ensure that the upper glass plate 11 and the lower glass plate 12 will not deviate after being pressed. The pressure can be applied to the surface of the vacuum glass assembly 1 in the form of a whole piece of film covering the upper glass plate 11, or in the form of multiple rubber heads pressing down evenly. Under the action of this pressure, the intermediate support is also compressed to produce a small deformation, thereby ensuring that the intermediate support can fully support the vacuum glass in the use environment of normal atmospheric pressure after welding is completed, so that the internal and external forces of the vacuum glass are uniform and stable, which is conducive to improving the service life of the vacuum glass.

[0062] The implementation principle of the above embodiment is: The total height of the exhaust support 2 and the getter 3 in the vacuum glass assembly 1 is greater than the total thickness of the sealing material 13. After the vacuum glass is assembled, the upper glass plate 11 will be pressed on the exhaust support 2 instead of directly pressing on the lower glass plate 12, that is, the exhaust support 2 and the getter 3 jointly separate the upper and lower glass plates, so that the gas between the upper and lower glass plates can be quickly discharged through the gas escape channel 14 formed by the exhaust support 2 and the getter 3, which greatly shortens the exhaust waiting time before the welding and edge sealing process, and significantly improves the production efficiency of the vacuum glass.

[0063] When the vacuuming is completed and the edge welding is ready, the exhaust support 2 is squeezed by the upper glass plate 11 and the lower glass plate 12 and is clamped and fixed in the vacuum chamber together with the getter 3. No additional process steps are required, which simplifies the production process.

[0064] The gas escape channel is formed by using the exhaust support 2 and the getter 3, and there is no need to set any other separation device in the vacuum chamber to maintain a certain gap between the two pieces of glass to maintain the gas escape channel, thereby reducing the complexity of the vacuum chamber structure. Example

[0065] The difference between this embodiment and the first embodiment is that the exhaust support member 2 is arranged outside the sealing material 13 .

[0066] The exhaust support 2 can be made of a compressible and destructible material, such as foamed nickel, foamed copper or glass powder. In the present embodiment, the exhaust support 2 is a glass capillary made of glass powder, and there are two exhaust supports 2, which are arranged on the outside of the sealing material 13 and located at the two opposite edges of the lower glass plate 12. During the exhaust process of the vacuum glass assembly 1, the exhaust support 2 can create a gas escape channel between the upper and lower glass plates, accelerate the exhaust, and improve the production efficiency. When the vacuum is completed and the edge is welded and sealed, the exhaust support 2 is compressed and destroyed under the pressure of the upper glass plate 11 and the lower glass plate 12. Since it is on the outside of the sealing material 13, it will not affect the performance of the vacuum glass, and after the edge is welded and sealed, the damaged exhaust support 2 can be removed. Example

[0067] A vacuum glass is manufactured by any one of the above manufacturing methods.

[0068] Although preferred embodiments of the present invention have been described, additional changes and modifications may be made to these embodiments by those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for manufacturing vacuum glass, characterized in that: The steps include: S101: placing sealing materials on the periphery of the upper glass plate and / or the lower glass plate; S102: a getter is arranged on the upper glass plate or the lower glass plate, and an exhaust support is arranged on the upper glass plate or the lower glass plate, wherein the exhaust support is compressibly deformable or compressibly destroyed; S103: placing an upper glass plate on a lower glass plate to form a vacuum glass assembly, wherein the height of the exhaust support in the vacuum glass assembly is greater than the total thickness of the sealing material, or the total height of the exhaust support and the getter in the vacuum glass assembly is greater than the total thickness of the sealing material, so that gas escape channels are generated around the periphery of the upper glass plate and the lower glass plate; S104: sending the vacuum glass assembly into a vacuum chamber, evacuating the chamber and leaving the chamber for a predetermined time, so that the gas between the upper glass plate and the lower glass plate escapes from the gas escape channel; S105: applying pressure to the surface of the vacuum glass assembly after evacuation, so that the upper glass plate and the lower glass plate are closely attached to each other by the sealing material, and then welding and sealing the edges of the vacuum glass assembly.

2. The method for manufacturing vacuum glass according to claim 1, characterized in that: In S104 and S105, the air pressure in the vacuum chamber is less than 30Pa.

3. The method for manufacturing vacuum glass according to claim 1, characterized in that: In S104, the predetermined time is not less than 1 minute.

4. The method for manufacturing vacuum glass according to claim 1, characterized in that: In S105, the pressure applied to the surface of the vacuum glass assembly after evacuation is evenly distributed.

5. The method for manufacturing vacuum glass according to claim 1, characterized in that: The process further includes S1031 between S103 and S104: sending the vacuum glass assembly into a preheating chamber and preheating the vacuum glass assembly at a temperature of 50° C. to 300° C.

6. The method for manufacturing vacuum glass according to claim 1, characterized in that: The exhaust support is located at an edge or a corner of the vacuum glass assembly and at an inner side of the sealing material, and the number of the exhaust support is at least one.

7. The method for manufacturing vacuum glass according to claim 1, characterized in that: The getter is in a strip shape, and the exhaust support is sleeved on the getter.

8. The method for manufacturing vacuum glass according to claim 1, characterized in that: In S103 and S104, the height of the gas escape channel is not less than 0.3 mm.

9. The method for manufacturing vacuum glass according to claim 1, characterized in that: The exhaust support member is a wave spring, a pot piece, and a compression spring.

10. The method for manufacturing vacuum glass according to claim 1, characterized in that: The exhaust support member is made of foamed nickel, foamed copper or glass powder.

11. A vacuum glass, characterized in that: The method is manufactured by any one of claims 1 to 10.

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