CN105669052A

CN105669052A - Bar frame sealed vacuum glass and manufacturing method thereof

Info

Publication number: CN105669052A
Application number: CN201410661391.1A
Authority: CN
Inventors: 戴长虹
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-19
Filing date: 2014-11-19
Publication date: 2016-06-15

Abstract

The invention relates to bar frame sealed vacuum glass. The bar frame sealed vacuum glass comprises upper glass and lower glass, wherein the periphery of the upper glass and the periphery of the lower glass are connected together through an edge banding bar frame and two or multiple sealing materials in a sealing manner, each sealing material comprises glass solder, metal solder and an adhesive, a closed vacuum layer is formed between the upper glass and the lower glass, the upper glass and the lower glass are convex glass or flat glass, and the convex surface of the convex glass faces to the outer side. A manufacturing method for the vacuum glass disclosed by the invention is simple in process, the manufactured vacuum glass and tempered vacuum glass can overcome the shortages in the prior art, the air tightness and service life of the vacuum glass can be effectively guaranteed, and mechanized, automated and large-scale production can be achieved.

Description

The vacuum glass of bar frame sealing and its preparation method

Technical field

The present invention relates to glass post-processing technical field, particularly relate to a kind of vacuum glass and making method thereof.

Background technology

Existing vacuum glass is generally made up of two blocks of sheet glass, glass surrounding low temperature glass solder edge sealing, and there is small upholder centre, by vacuumizing the thin vacuum layer making to form 0.1-0.2mm thickness between two blocks of glass. Owing to not having the heat transfer, transaudient of gas, the internal surface of glass can have again transparent low-radiation film, so vacuum glass has well heat insulation and soundproof effect, is one of best energy-saving glass of performance; Owing to vacuum layer is very thin, so having more advantage compared with other energy-saving glass in weight, thickness etc.

Through the research and development of decades, the manufacturing technology of existing multiple vacuum glass, can be divided into from edge sealing material: glass solder, metal (comprising alloy) solder and organic adhesion agent, can be divided into manufacture craft: first edge sealing, vacuumize and seal the two-step process of bleeding point and the one-step technology of direct edge sealing under vacuo again, can be divided into from upholder: machinery or manually lay the upholder of fixed measure, adopt printing or the some mode such as glue that cryogenic glass powder cream is prepared the upholder become through high temperature sintering on the surface of the glass. two-step process compares proven technique, and existing commercially available vacuum glass is all that two-step process is produced, and namely adopts low temperature glass solder edge sealing, is vacuumized by bleeding point, the production technique of finally sealed bleeding point, but due to produce vacuum glass complex structure, technique is loaded down with trivial details, cost height, production capacity are low and can not produce full toughened vacuum glass, so the production of vacuum glass and application be all limited by very large, and with the vacuum glass of organic adhesion agent edge sealing owing to resistance to air loss through high-temperature exhaust air process, organic adhesion agent is not poor, cause vacuum tightness to be difficult to maintain, so it is identified as pseudo-vacuum glass. in vacuum oven, the one-step method production process of direct edge sealing is the main means producing vacuum glass low-costly and in high volume, and current technology adopts glass solder or brazing metal edge sealing, its Problems existing is: when adopting glass solder edge sealing, due to welding temperature height, so not easily producing full toughened vacuum glass, a bigger difficult problem is that glass solder melts under vacuo phenomenon of deflation easily occurs, glass solder itself is not only made to produce a lot of bubble, and the character making glass solder changes, thus affect bonding strength and resistance to air loss, it is very difficult to produce the vacuum glass of long lifetime, high-quality, when adopting brazing metal edge sealing, owing to volatilization phenomenon can occur the brazing metal of fusing under vacuo, the metal gas molecule of volatilization can deposit on the glass surface, or deposit again on the glass surface after generating compound with air reaction remaining in vacuum, it is similar to vacuum plating, not only affect the outward appearance of vacuum glass, and affect the light transmission of vacuum glass, thus satisfied vacuum glass cannot also be obtained, although so brazing metal can reduce sealing temperature thus can produce toughened vacuum glass, flexible edge sealing can effectively reduce stress and reduce breakage rate, unleaded sealing-in can eliminate heavy metal contamination etc., but the vacuum glass of so far there are no metal sealed edges. in sum, glass solder, brazing metal and organic adhesion agent three kinds of materials all can not directly apply to sealing-in vacuum glass under vacuum. in addition, in order to reduce the heat transfer of upholder and pass sound and the impact on visuality, the size of upholder is the smaller the better, the size of upholder is more little, its pressure born of glass of upholder and contact is more big, the possibility of upholder and glass breaking is also more big, so the shock resistance of vacuum glass is also more poor. a series of vacuum glass edge sealing that the applicant once proposed and upholder prepare the patent application of aspect, can be used as the background information of the application.

Summary of the invention

Technical problem to be solved by this invention is the defect existed for existing vacuum glass, a kind of novel vacuum glass (toughened vacuum glass) and making method thereof are provided, the making method technique of this kind of vacuum glass is simple, prepared vacuum glass can overcome deficiency of the prior art, can effectively ensure resistance to air loss and the work-ing life of vacuum glass, and can gain in strength and heat insulation, sound-proofing properties.

In order to solve the problems of the technologies described above, the present invention provides a kind of vacuum glass, it comprises glass, lower-glass, the periphery of described upper glass and described lower-glass is sealed by edge sealing bar frame and twice or multiple-sealed material, described sealing material comprises glass solder, brazing metal and tackiness agent, a closed vacuum layer is formed between described upper glass and described lower-glass, described upper glass and described lower-glass are convex surface glass or flat glass, described convex surface glass convex surface facing outside, have upholder between described flat glass.

Wherein, described glass solder is low melting glass solder, it is preferable to low softening point, full-bodied glass solder, and its softening point temperature is 150-380 DEG C, it is preferable to 200-320 DEG C; After softening, there is higher viscosity, at 300-380 DEG C, trickling phenomenon does not occur.

Wherein, described brazing metal comprises solder, and its welding temperature is 150-400 DEG C, it is preferable to 280-380 DEG C; Such as tin and tin alloy, Mg-based hydrogen storage, zinc and zinc alloy etc.

Wherein, described tackiness agent is inorganic or organic adhesion agent or composite adhesive, it is high temperature resistant, and degree is 150-400 DEG C, such as organic high-temperature resistance adhesive (polyimide, polybenzimidazole class, polybenzothiozole class, polyarylsulphone class, polyphenylene sulfide class, silicone based, modified epoxy class, resol class and polyarylether class etc.), high-temperature resistant coating, inorganic high-temperature resistant tackiness agent, organo-mineral complexing high-temperature resistance adhesive etc.

Wherein, described twice or multiple-sealed material, comprise any two or three in glass solder, brazing metal and tackiness agent; Preferably at least one is brazing metal, because brazing metal has better resistance to air loss, flexibility and toughness and very wide welding temperature scope, not only can ensure the stopping property of vacuum glass, reduce glass strain and extend work-ing life, and toughened vacuum glass can be produced.

Wherein, described twice or multiple-sealed material, it is preferable that glass solder or tackiness agent seal for the first of vacuum layer, it is preferable that brazing metal seals for the second of vacuum layer, under the protection of first sealing, it is possible to prevent brazing metal from volatilizing under vacuo pollution vacuum layer;

Further, described glass solder is low softening point, full-bodied glass solder, and when brazing metal melts, glass solder can not trickle.

Wherein, described twice or multiple-sealed material, it is preferable that the fusing point of brazing metal is higher than the softening temperature of first sealing material, and after namely first sealing plays a role, brazing metal just can start fusing;

Further, the sealing of described first can permanent sealed vacuum layer, it is also possible to provisional sealed vacuum layer, i.e. the only sealed vacuum layer when brazing metal melts, and prevents the gas molecule of brazing metal from entering and pollutes glass in vacuum layer; That is brazing metal plays main seal effect in vacuum glass, other sealing materials play auxiliary seal effect.

Wherein, described twice or multiple-sealed, it is preferred to use three seals, it is more preferable to for first is glass solder or tackiness agent sealing, second is brazing metal sealing, and the 3rd road is tackiness agent or glass solder sealing.

Wherein, described twice or multiple-sealed material, adopt artificial or mechanical method to apply on the glass surface, it is preferred to use the method for machinery, such as silk screen or mould printing, printer or some glue machine, spreadometer coating etc.

Wherein, described twice or multiple-sealed, it is preferred to use the mode of pressing sealing, namely realize sealing under impressed pressure, and described impressed pressure is that gravity, elastic force and mechanical force are such as grinding pressure etc.

Wherein, described upper and lower glass can have at least the periphery of one block of glass at least containing an edge sealing bar frame;

Further, the sealing-in face periphery of described upper glass has an edge sealing bar frame, and described edge sealing bar frame is corresponding with the second sealing material of lower-glass;

Further, the sealing-in face periphery of described upper glass or lower-glass has two edge sealing bar frames, and described edge sealing bar frame is corresponding with first and third road sealing material of lower-glass respectively, and second sealing material is between described two edge sealing bar frames; When there being multiple edge sealing bar frame, analogize with this;

Further, the sealing-in face periphery of described upper glass has an edge sealing bar frame, and the sealing-in face periphery of described lower-glass has two edge sealing bar frames, and the edge sealing bar frame of described upper glass is entrenched between the edge sealing bar frame of described lower-glass; Described sealing material can be coated on the edge sealing bar frame of upper and lower glass and/or the corresponding position of upper and lower glass; When there being multiple edge sealing bar frame, analogize with this.

Wherein, described edge sealing bar frame can be made by the mode of squeezing, etching or coating, it is preferred to use the mode of machinery coating; Can also be made up of wire, utilize cryogenic glass powder or tackiness agent at high temperature itself and glass sintering to be integrated;

Further, described coating method is the method adopting printing or printer or some glue machine, cryogenic glass powder (cream) or tackiness agent or metal powder (cream) are prepared on glass and form the continuous fin being raised in glass surface, be combined as a whole through high temperature sintering, solidification and glass; When described edge sealing bar frame adopts coating method to prepare, it is possible to be once apply, it is also possible to be repeatedly apply;

Further, described edge sealing bar frame can be prepared before glass tempering, it is also possible to prepares after glass tempering; When described edge sealing bar frame is prepared before glass tempering, it is preferred to use cryogenic glass powder (such as toughened glass ink) is made, and is combined as a whole through high temperature sintering and glass; When described edge sealing bar frame is prepared after glass tempering, it is preferred to use low temperature glass solder (low softening point, high viscosity) or heat resistant polymer (resin) are made, now, described edge sealing bar frame can serve as first and/or three seals.

Wherein, the height of described edge sealing bar frame is preferably 0.1-3mm, more preferably 0.3-1.5mm, and width is preferably 0.2-5mm, more preferably 1-2mm.

Wherein, described vacuum glass can also comprise one flat plate glass, and described sheet glass is clipped between described upper glass and described lower-glass, and described upper glass and described lower-glass form two closed vacuum layer respectively with described sheet glass.

Wherein, described vacuum glass may further include polylith sheet glass, thus comprises multiple closed vacuum layer.

In order to solve the problems of the technologies described above, the present invention provides the above-mentioned preparation method with edge sealing bar frame vacuum glass, comprising:

The first step, according to two blocks of sheet glass of the shape of the vacuum glass of required making and size cutting desired size, and carries out edging, chamfering, cleaning, drying treatment;

2nd step, at least makes at least one edge sealing bar frame at the periphery of upper glass or lower-glass sealing-in face, and when making convex surface vacuum glass, the glass after processing two pieces carries out hot curved process so that it is form convex surface; When making area vacuum glass, at least one piece in glass after two pieces of process preparing upholder, if all preparing upholder on two blocks of glass, ensureing that upper and lower glass closes after sheet, upper and lower upholder can cross support; When making toughened vacuum glass, then two blocks of glass are carried out tempering process respectively;

3rd step, the lower-glass obtain the 2nd step or the sealing-in face periphery of two blocks of glass are evenly coated with twice or multiple-sealed material, it is preferable that three seals, and wherein second is sealed into metallic seal;The second sealing material of preferred lower-glass is corresponding with the edge sealing bar frame of upper glass, and sealing material evenly leaves several aspirating holes, and sends in vacuum edge sealing stove after two blocks of glass are closed sheet; Proterties according to sealing material, glass and the requirement of production technique, described glass can carry out before closing sheet or after closing sheet preheating or predischarge process;

4th step, described vacuum edge sealing sole is vacuumized, limit heating, be evacuated to below 0.1Pa, be warming up to more than the softening temperature of first sealing material, at least make first sealing material vacuum layer be sealed under gravity or impressed pressure; Continue to heat up, reach the edge sealing temperature of second sealing material, after insulation certain time, stop heating, with stove cooling, two blocks of glass are hermetic sealed by sealing material, and the fire door opening vacuum edge sealing stove obtains vacuum glass.

The convex surface bow of the upper and lower glass of described convex surface vacuum glass is high is preferably 0.1-200mm, more preferably 1-20mm, is advisable outside not protruding from sash as during windowpane.

Described upper and lower glass can have identical bow height, it is also possible to has different bow height according to the difference of width inside and outside sash.

Described sealing material is at least coated on the sealing-in face periphery of a piece of upper and lower glass or the sealing-in face periphery of two pieces and described intermediate glass, or is directly coated on edge sealing bar frame.

Described sealing material directly or contacts with upper and lower glass and intermediate glass through middle layer (such as the metal pulp bed of material), or contacts with edge sealing bar frame; Brazing metal can also be sintered by tempering or the transition layer (such as silver slurry layer) etc. of high temperature sintering carries out sealing-in.

The vacuum glass of described two vacuum layer, its single stage method forming step is as follows:

Described upper glass, lower-glass and/or central flat glass are after process in early stage, sealing material evenly it is coated with by the periphery in upper glass, lower-glass and central flat glass sealing face or edge sealing bar frame, sealing material evenly leaves several pass through strips of sealing material groove or slit as aspirating hole, and will three blocks of glass close sheets after send in vacuum edge sealing stove; To vacuum edge sealing stove evacuation to below 0.1Pa, be warming up to first sealing material softening temperature more than, at least make first sealing material vacuum layer be sealed under gravity or impressed pressure; Continue to heat up, reach the edge sealing temperature of second sealing material, after insulation certain time, stop heating, with stove cooling, three blocks of glass are hermetic welded together by sealing material, open fire door and obtain vacuum glass.

In order to reduce laid down cost, save energy and reduce the cost, vacuum edge sealing stove can have basic heating system and local heating system, basis heating system can adopt the mode of resistive heating such as nichrome wire, electric heating pipe, hot plate etc., by vacuum edge sealing furnace interior and glass heats to basal temperature; The periphery of glass and edge sealing position are carried out local heating by the modes such as recycling resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating, reach the object that sealing material is heated to melting within the short period of time.

Described basis Heating temperature range preferably from 150-300 DEG C, local heating temperature range preferably from 280-450 DEG C.

In described vacuum layer, when upper and lower glass is convex surface glass, if when its planar dimension is less or convex surface bends high relatively greatly, can to rely on glass self convex shape and intensity opposing normal atmosphere, it is possible to do not establish upholder;When upper and lower glass can not rely on self convex shape and intensity opposing normal atmosphere, should arranging a small amount of necessary upholder, normal atmosphere cooperatively resisted by upholder and glass; When upper and lower glass is flat glass, upholder must be set in vacuum layer.

The material of above support is low temperature glass, metal, pottery, glass or high temperature resistant superpolymer, it is preferable to low temperature glass or superpolymer.

Above support minimum unit can be square, the dot matrix of equilateral triangle or grid, and its length of side is about 30-300mm, it is preferable to 50-100mm; Upholder is point-like, strip, wire or latticed, and its length of strip upholder is 0.3-5.0mm, is preferably 1.0-3.0mm, and width is 0.1-2.0mm, is preferably 0.2-1.0mm, is highly 0.1-2.0mm, is preferably 0.2-1.0mm; Its width of wire-like support thing is 0.1-2.0mm, is preferably 0.2-1.0mm, is highly 0.1-2.0mm, is preferably 0.2-1.0mm; Its diameter of point-like support thing is 0.1-3.0mm, is preferably 0.3-1.0mm, is highly 0.1-1.0mm, is preferably 0.2-0.6mm.

Upholder adopts low temperature glass or superpolymer to make, preferably adopting cryogenic glass powder or low temperature glass solder or high temperature resistant superpolymer (precursor or tackiness agent) to utilize printing or printing or dispensing technology to make, the sintering temperature of described low temperature glass solder is lower than cryogenic glass powder.

When upholder is printed on one block of glass, it is preferable to point-like or cylinder shape; When upholder is printed on upper and lower two blocks of glass simultaneously, it is preferable to strip or wire.

When upholder is printed before glass tempering, it is preferable that cryogenic glass powder is made, utilize the high temperature of annealing furnace that its sintering curing and glass are formed one; When upholder is printed after glass tempering, it is preferable that low temperature glass solder or superpolymer are made, the high temperature of vacuum edge sealing stove is utilized to be sintered or solidify and glass formation one.

When upholder is printed before glass tempering, it is preferable that the upholder after tempering is carried out mechanical mill process, remove the tip at its top and make its top in a plane, both eliminated the deformation effect of toughened glass, and increased again Area of bearing; Top after polishing carries out the process of falling fillet, impact to eliminate stress further again, prevents the fragmentation of upholder or glass and improves the impact resistance of vacuum glass.

When upper lower-glass all has strip or a wire-like support thing, upholder cross support, upper lower-glass is still point cantact by upholder, and between upholder and glass, it is linear contact lay, increase contact area, reduce the tension stress of glass in support place, not only can reduce the quantity of upholder, thus improve the transparency of glass, heat insulation and sound-proofing properties further, and the more important thing is the impact resistance improving vacuum glass.

The material of described upper and lower glass can be simple glass or ultra-clear glasses or toughened glass or half tempered glass or low emissivity glass or wire glass or roll glass or hot melt glass, or the combination of above any two or three kinds of glass, more preferably ultra-clear glasses, toughened glass, half tempered glass and low emissivity glass.

When described upper and lower glass is Low emissivity toughened glass, it is possible to first plated film, rear tempering, it is also possible to first tempering, rear plated film; In order to the oxidation stain problem of the smooth property and film that solve toughened glass, it is preferred to use the mode of first tempering, rear plated film, and preferably adopt continuous tempering furnace; Glass used, it is preferred to use super white glass, to prevent the self-destruction of toughened glass.

Time of vacuumizing to shorten, improve production efficiency, it is possible to before upper and lower glass closes sheet, carry out ultraviolet cleaning, plasma cleaning etc., to remove absorption gas molecule on the glass surface, water molecules etc.

In order to shorten heat-up time, improve production efficiency, it is possible to carry out preheat process before upper and lower glass closes sheet or after closing sheet, to improve the homogeneity of glass heats.

In order to shorten heat-up time, improve the homogeneity of glass heats, it is possible to after first and/or three seals play a role, release vacuum, heat in atmosphere.

In order to shorten the pumpdown time, improve the vacuum tightness of vacuum layer, active metal can be put in vacuum layer, such as aluminium, magnesium etc.

In order to improve and keep the vacuum tightness of vacuum layer, extend the work-ing life of vacuum glass, getter in vacuum layer, can be put into.

Vacuum edge sealing stove is intermittent vacuum process furnace or continuous vacuum process furnace, it is preferred to use continuous vacuum process furnace.

The conjunction sheet of upper and lower glass can carry out outside the stove of vacuum edge sealing stove, it is also possible to carries out in stove; When vacuum edge sealing stove is continuous vacuum process furnace, it is preferred to use close sheet in stove.

The useful effect of the present invention:

Upper and lower glass is carried out twice and multiple-sealed with two kinds and above sealing material by the vacuum glass of the present invention, fully utilized the advantage of existing sealing material and overcome its shortcoming separately by different seal temperatures, solved a kind of material in prior art, single track seal all difficult problems of facing; First and third road sealing of its vacuum layer of vacuum glass of the present invention is preferred adopts glass solder or superpolymer sealing, second sealing preferably employing brazing metal sealing, first seal its mainly act on be only brazing metal melt before seal vacuum layer, after preventing brazing metal fusing, its gas molecule enters vacuum layer and pollutes glass, so the sealing temperature of first sealing material, mechanical property, water resistance, ageing-resistant performance and long-term resistance to air loss etc. can too much be considered, thus the range of choice of material increases considerably, cost significantly reduces; Second brazing metal is after by first, three seals material seal, then the fusing that heats up, and not only avoids metal vapors and pollutes glass but also prevent a large amount of volatilizations of brazing metal, saves material, reduces cost; After the preferred version of the present invention adopts three seals, make glass solder only softening and non-fusible, not only reduce edge sealing temperature, and sealing-in is easily bubbled under vacuo, carbonization, cementability is low, fragility is big, poor air-tightness immalleable, long-term, sealing temperature height toughened glass are easily annealed and cannot be produced the problem of vacuum glass, toughened vacuum glass thoroughly to solve glass solder, also thoroughly solve brazing metal and pollute glass, consume big problem and problem that vacuum glass life-span that the long-term poor air-tightness of superpolymer is produced is short; The introducing of edge sealing bar frame, be possible not only to restriction sealing material especially brazing metal dissolve after random flowing, make edge sealing neatly good-looking, and play good supporting role, make thickness that sealing material keeps certain, reinforced seal effect, the more important thing is and make the sealing between upper and lower glass turn into curved surface sealing from flat seal, add sealing surface area, improve sealing intensity, thus improve the resistance to air loss of vacuum glass sealing-in, stability and reliability; The synergy of several sealing material and edge sealing bar frame, considerably increase the sealing property of vacuum layer between upper and lower glass, significantly improve the life-span of vacuum glass, and can save and make and the great bleeding point of sealing difficulty, achieve single stage method mass and prepare vacuum glass and toughened vacuum glass, facilitate the suitability for industrialized production of vacuum glass and toughened vacuum glass, the production cost drastically increase the productivity of vacuum glass and qualification rate, reducing vacuum glass; In addition, compared with existing commercially available vacuum glass, rigid between upper and lower glass, brittle glass are connected and changes soft, tough metal connection into, not only reduce in edge sealing process the stress produced, also significantly reduce the stress that vacuum glass produces because of internal-external temperature difference, thus greatly reduce the self-destruction rate of vacuum glass.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of embodiments of the invention 1;

Fig. 2 is the schematic diagram of embodiments of the invention 2;

Fig. 3 is the schematic diagram of embodiments of the invention 3.

In figure: 1. go up glass, 2. lower-glass, 3. first sealing, 4. second sealing, 5. three seals, 6. edge sealing bar frame, 7. upholder.

Embodiment

Hereinafter adopting embodiment and accompanying drawing that embodiments of the present invention are described in detail, to the present invention, how utilisation technology means carry out technical solution problem whereby, and the process that realizes reaching technique effect can fully understand and implement according to this.

Embodiment 1: see Fig. 1, the area vacuum glass of a kind of two seals, two blocks of glass are toughened glass, wherein one piece or low emissivity glass, its making method is as follows: first according to one flat plate glass and one block of low emissivity glass of the shape of made vacuum glass and size cutting desired size, and carry out edging, chamfering, cleaning, drying; Secondly preparing two edge sealing bar frames 6 with toughened glass ink and spreadometer on lower-glass 2, then sent into respectively by two blocks of glass and carry out tempering process in annealing furnace, edge sealing bar frame 6 is also sintered into one with lower-glass 2; Polyimide tackiness agent and some glue mechanism is again utilized to be cylinder shape for upholder 7, upholder 7, evenly it is coated with one polyimide tackiness agent 3 by the interior side sealing bar frame 6 of lower-glass 2 with coating machine, loads low temperature glass solders 4 at two edge sealing bar frames, solder evenly leaves several aspirating holes, sends in vacuum edge sealing stove after two blocks of glass are closed sheet; Described glass carries out pre-treatment before sheet or after closing sheet closing, to get rid of volatile matter contained in the gas of glass surface absorption and solder; Back vacuumizes, limit heating, be evacuated to below 0.1Pa, be warming up to the softening temperature more than 320 DEG C of glass high-temperature exhaust air temperature and low temperature glass, glass be vented after, making polyimide seal live vacuum layer under gravity or impressed pressure, upholder 7 and upper lower-glass are in close contact; The melt temperature more than 420 DEG C release vacuum, continuing to be warming up to low temperature glass in atmosphere, low temperature glass melts, and upholder 7 is also solidificated on glass; Stop heating, with stove cooling, two blocks of glass are hermetic sealed by low temperature glass and polyimide, open fire door and obtain required vacuum glass.

The innovation part of the present invention is: use the good thermoplastic polyimide of toughness to be upholder, by the distortion under high temperature, pressure, all upholders are made all to have good contact with glass, reduce glass and stress that upholder bears, thus improve the impact resistance of vacuum glass.

After polyimide seal, heating makes low temperature glass melt in atmosphere, eliminates vacuum to the impact of low temperature glass.

By edge sealing bar frame, trickle everywhere after preventing glass solder to melt, and make the thickness that vacuum layer keeps certain.

Embodiment 2: see Fig. 2, the area vacuum glass of a kind of three seals with edge sealing bar frame, two blocks of glass are toughened glass, wherein one piece or low emissivity glass, its making method is as follows: first according to one flat plate glass and one block of low emissivity glass of the shape of made vacuum glass and size cutting desired size, and carry out edging, chamfering, cleaning, drying; Secondly it is cylinder shape with toughened glass ink and the standby edge sealing bar frame 6 of some glue mechanism and upholder 7, upholder 7 respectively on upper glass 1, then two blocks of glass is sent into respectively and annealing furnace carries out tempering process, prepared edge sealing bar frame 6 and upholder 7 also sinter on glass;Again the upholder 7 after sintering is carried out mechanical mill so that it is top is in a plane, and the top after polishing carries out the process of falling fillet, impact to eliminate stress further; Then the periphery coating machine of one block of glass or two blocks of glass is evenly coated with twice low temperature glass solder with together with saxonia metal wire, saxonia metal wire between twice low temperature glass solder and corresponding with edge sealing bar frame 6, solder evenly leaves several aspirating holes, after putting into active metal magnesium or aluminium conjunction sheet between two blocks of glass, sends into vacuum edge sealing stove; Described glass carries out pre-treatment before sheet or after closing sheet closing, to get rid of volatile matter contained in the gas of glass surface absorption and solder; Back vacuumizes, limit heating, after the softening temperature be evacuated to below 0.1Pa, being warming up to low temperature glass more than 320 DEG C, low temperature glass are softening, make the low temperature glass softened seal zinc alloy, prevent a large amount of volatilizations of zinc alloy under gravity or impressed pressure; Continuing to be warming up to the melt temperature more than 380 DEG C of zinc alloy, zinc alloy melts, and stops heating, lowers the temperature with stove, and two blocks of glass are hermetic welded together by zinc alloy, open fire door and obtain required vacuum glass.

The innovation part of the present invention is to adopt three seals, before brazing metal melts, volatile quantity utilize softening glass solder to be sealed in a fixing space time less, prevent brazing metal from volatilizing in a large number, namely avoid glass, vacuum oven and vacuum pump contaminated, turn reduce the loss of brazing metal.

The upholder of point-like is in drying and sintering process, volume can shrink and change, tip is formed on not only highly inconsistent but also top, easily form stress to concentrate, reduce the shock resistance of toughened glass, not only make its top be in by mechanical mill and have bigger contact area in a plane but also with glass, thus improve the resistance to impact shock of toughened glass.

Embodiment 3: see Fig. 3, a kind of upper lower-glass all has the area vacuum glass of the three seals of edge sealing bar frame, two blocks of glass are toughened glass, wherein one piece or low emissivity glass, its making method is as follows: first according to one flat plate glass and one block of low emissivity glass of the shape of made vacuum glass and size cutting desired size, and carry out edging, chamfering, cleaning, drying; Secondly on upper glass 1 and lower-glass 2 respectively with toughened glass ink and spreadometer prepare one and two edge sealing bar frames 6, on the edge sealing bar frame 6 of glass 1 corresponding between two edge sealing bar frames 6 of lower-glass 2, then two blocks of glass are sent into respectively annealing furnace carries out tempering process, prepared edge sealing bar frame 6 also sinters on glass; Be strip with low temperature glass solder and the some glue standby upholder 7 of mechanism, upholder 7 respectively on two blocks of glass again, two blocks of glass after closing sheets upper and lower upholder intersect; Then by two edge sealing bar frames 6 of lower-glass 2 being evenly coated with polyimide tackiness agent with spreadometer and puts into tin alloy bar in-between, polyimide tackiness agent evenly leaves several aspirating holes, send in vacuum edge sealing stove after two blocks of glass are closed sheet; Described glass carries out pre-treatment before sheet or after closing sheet closing, to get rid of volatile matter contained in the gas of glass surface absorption and solder; Back vacuumizes, limit heating, the solidification value more than 250 DEG C be evacuated to below 0.1Pa, being warming up to polyimide tackiness agent, polyimide adhesive solidification;Be warming up to again the softening temperature more than 320 DEG C of polyimide and low temperature glass solder, polyimide and low temperature glass softening after, make the polyimide seal softened lives tin alloy, low temperature glass is made the cross connection of upholder up and down together under gravity or impressed pressure; Continuing to be warming up to the melt temperature more than 350 DEG C of tin alloy, tin alloy melts, and stops heating, lowers the temperature with stove, and two blocks of glass are hermetic welded together by tin alloy, open fire door and obtain required vacuum glass.

The innovation part of the present invention is: lower sealing edge bar frame and upper and lower upholder in employing, not only good sealing effect, support stress little, and vacuum layer height height, space are greatly, the highly high conductive performance being conducive to reducing upholder, thus improve the heat insulation of vacuum glass and sound-proofing properties; Space is big, has bigger surge capability for vacuum tightness, also can make that putting into of getter is more convenient, more, thus improves the work-ing life of vacuum glass.

Upper lower-glass all has strip upholder, upholder vertical pile supports, upper lower-glass is still point cantact by upholder, and between upholder and glass, it is linear contact lay, increase contact area, reduce the tension stress of glass in support place, it is possible to reduce the quantity of upholder, thus improve the transparency of glass, heat insulation and sound-proofing properties further.

All above-mentioned this intellecture properties of primary enforcement, not setting restriction other forms of enforcement this kind of product innovation and/or novel method. Those skilled in the art will utilize this important information, and foregoing is revised, to realize similar implementation status. But, all modifications or transformation belong to the right of reservation based on product innovation of the present invention.

The above is only the better embodiment of the present invention, is not the restriction that the present invention does other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations. But every not departing from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling above embodiment done according to the technical spirit of the present invention, still belongs to the protection domain of technical solution of the present invention.

Claims

1. a vacuum glass, it is characterized in that comprising glass, lower-glass, the periphery of described upper glass and described lower-glass is sealed by edge sealing bar frame and twice or multiple-sealed material, described sealing material comprises glass solder, brazing metal and tackiness agent, a closed vacuum layer is formed between described upper glass and described lower-glass, described upper glass and described lower-glass are convex surface glass or flat glass, described convex surface glass convex surface facing outside, have upholder between described flat glass.

2. vacuum glass as claimed in claim 1, it is characterized in that the first of described vacuum layer and/or three seals material be glass solder or tackiness agent, second sealing material are brazing metal, after first sealing material plays a role, brazing metal just starts fusing; Described glass solder is low softening point, full-bodied glass solder, when brazing metal melts, glass solder only softening and non-fusible, can not trickle everywhere.

3. vacuum glass as claimed in claim 1, it is characterized in that the first of described vacuum layer and three seals material be glass solder or tackiness agent, second sealing material are brazing metal, after first and three seals material play a role, release vacuum, heat second sealing in atmosphere.

4. vacuum glass as claimed in claim 1, it is characterized in that the first sealing material of described vacuum layer be tackiness agent, second sealing material is glass solder, after completing first sealing under vacuo, release vacuum, heat second sealing in atmosphere.

5. vacuum glass as claimed in claim 1, it is characterized in that the first of described vacuum layer and/or three seals material are tackiness agent, second sealing material is glass solder, and glass solder is in sealing-in process or only softening and non-fusible, or not only softening but also melt.

6. vacuum glass as claimed in claim 1, it is characterized in that described edge sealing bar frame adopts the method for coating to be prepared on glass by cryogenic glass powder (cream) or tackiness agent or metal powder (cream) to form the continuous fin being raised in glass surface, it is combined as a whole through high temperature sintering, solidification and glass.

7. vacuum glass as claimed in claim 1, it is characterised in that described sealing material or be coated on edge sealing bar frame or be coated between adjacent edge sealing bar frame or be coated in the corresponding position of edge sealing bar frame.

8. vacuum glass as claimed in claim 1, it is characterised in that above support adopts low temperature glass or superpolymer to make; It is point-like or cylinder shape when upholder is printed on one block of glass, it is strip or wire when upholder is printed on upper and lower two blocks of glass.

9. vacuum glass as claimed in claim 1, it is characterized in that above support is prepared before glass tempering or after tempering, when upholder is printed before glass tempering, preferably the upholder after tempering is carried out mechanical mill process, removing the tip at its top and make its top in a plane, the top after polishing carries out the process of falling fillet again.

10. the preparation method of vacuum glass as described in item as arbitrary in claim 1 to 9, it is characterised in that comprise following preparation process:

3rd step, the lower-glass obtain the 2nd step or the sealing-in face periphery of two blocks of glass are evenly coated with twice or multiple-sealed material, it is preferable that three seals, and wherein second is sealed into metallic seal; The second sealing material of preferred lower-glass is corresponding with the edge sealing bar frame of upper glass, and sealing material evenly leaves several aspirating holes, and sends in vacuum edge sealing stove after two blocks of glass are closed sheet; Proterties according to sealing material, glass and the requirement of production technique, described glass can carry out before closing sheet or after closing sheet preheating or predischarge process;