CN102701575A

CN102701575A - Convex vacuum glass, flat plate vacuum glass and preparation method thereof

Info

Publication number: CN102701575A
Application number: CN2012100754353A
Authority: CN
Inventors: 戴长虹
Original assignee: Individual
Current assignee: Weihai Runfeng Glass Co ltd
Priority date: 2012-03-21
Filing date: 2012-03-21
Publication date: 2012-10-03
Anticipated expiration: 2032-03-21
Also published as: CN102701575B

Abstract

The invention provides convex vacuum glass, which comprises upper glass and lower glass, wherein peripheries of the upper glass and the lower glass are welded together through low-temperature solder; a sealed vacuum layer is formed between the upper glass and the lower glass; the upper glass and the lower glass are convex glass; and the convex surface is toward the outer side. The manufacture method of the vacuum glass disclosed by the invention is simple in process; and with the adoption of the prepared vacuum glass and toughened vacuum glass, the defects in the prior art can be overcome, the gas tightness of the vacuum glass can be effectively ensured, the transparency, the strength and heat-insulation and sound-insulation performances can be can increased, and light pollution of a glass curtain wall also can be reduced.

Description

Convex surface vacuum glass, planar vacuum glass and preparation method thereof

Technical field

The present invention relates to the glass processing technical field, relate in particular to a kind of vacuum glass and preparation method thereof.

Background technology

Existing vacuum glass generally is made up of two blocks of sheet glass, uses the low temperature glass solder edge sealing around the glass, and there is small upholder the centre, makes the thin vacuum layer that forms 0.1～0.2mm thickness between two blocks of glass through aspirating hole.Owing to the heat transfer that does not have gas, transaudient, the internal surface of glass can have transparent low thermal radiation film again, so vacuum glass has well heat insulation and soundproof effect, is the best energy-saving glass of performance.

The gordian technique of existing vacuum glass has: the one, and the design of aspirating hole and the sealing of extraction pipe and protection, the 2nd, the selection of upholder and laying, the 3rd, the selection of scolder and edge sealing.Existing vacuum glass has following shortcoming: (1) complex structure, technology are loaded down with trivial details: glass punching, preparation and welding bleed Glass tubing, lay upholder and getter, periphery apply low temperature glass solder, heat peripheral sealing-in, heat vacuumizing and exhausting and seal bleeding point, bleeding point protection, getter deblocking etc.; (2) evacuation process is complicated, production efficiency is very low: because bleeding point is very thin, pumping speed is little, and production efficiency is low; The space that two blocks of glass forms is difficult for the vacuum tightness that reaches higher, thereby reduces thermal insulation, the defening effect of vacuum glass, for improving heat-insulating property, has to use getter, has more increased complicacy and the cost produced; (3) upholder lays difficulty: influence transparency and heat insulation, sound-proofing properties; (4) sealing edge quality is not high: edge sealing is the edge interface place that low temperature glass solder is coated in two blocks of glass; Glass solder after under high temperature action, utilizing capillarity to make scorification flows in the slit between two blocks of glass; Realize edge sealing; Its subject matter is: if glass solder skewness or inner suction are uneven, the too high influx of glass solder that all can cause of Heating temperature is inconsistent, thereby cause the uneven of vacuum glass edge sealing, resistance to air loss is difficult to guarantee; Upper and lower two glass discontinuity, mechanical strength is bad, has influenced the work-ing life of vacuum glass; Upper and lower two blocks of glass are prone to cause low temperature glass solder sticking power bad because of all being the light face; (5) finally sealed of bleeding point is a big drawback of a technical difficult problem and product with protection, and the problem that this geneogenous textural defect is brought can't solve in subsequent technique at all.Complicated structure, loaded down with trivial details production technique be caused the production efficiency of existing vacuum glass low, scrap rate is high, production cost and the commercial value basic reason under being in not.

Present many City Buildings adopt glass curtain wall to make extraneous adornment, and light pollution is the big drawback of one of which, and adopt the glass curtain wall of this material of vacuum glass also will have reflective harm.

Toughened glass is shatter proof glass, has only toughened vacuum glass just can be applied in the Highrise buildings, and toughened vacuum glass is never accomplished scale production up to now.The technical barrier that toughened vacuum glass is made also has following difficulty the total difficult problem in above-mentioned vacuum glass making processes: 1, the upholder of fixed thickness can't adapt to the random variation in the gap between two sheet glass that toughened glass causes because of distortion in heat enhancing process; Upholder can't evenly carry barometric point; Even can't locate and move, stressed irregular and destroy at the barometric point lower-glass; 2, too high, the overlong time of temperature in the heating edge sealing process causes toughened glass stress relaxation, strength degradation, does not reach the requirement of toughened glass.

Summary of the invention

Technical problem to be solved by this invention is the defective that is to existing vacuum glass existence; A kind of novel vacuum glass, vacuum toughened glass and preparation method thereof are provided; The making method technology of this vacuum glass is simple; Prepared vacuum glass and toughened vacuum glass can overcome deficiency of the prior art, can effectively guarantee the resistance to air loss of vacuum glass, and can increase transparency with intensity and heat insulation, sound-proofing properties and alleviate the glass curtain wall light pollution.

In order to solve the problems of the technologies described above; The invention provides a kind of convex surface vacuum glass; It comprises: upper glass, lower-glass, and the periphery of said upper glass and said lower-glass welds together through solder, forms the vacuum layer of a sealing between said upper glass and the said lower-glass; Said upper glass and said lower-glass are convex glasses, and convex surface toward the outer side.

Wherein, the convex surface of said convex glass bow height is not less than 0.1mm, is preferably 0.1～200mm.

Wherein, have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass.

Wherein, said convex surface vacuum glass can also comprise one flat plate glass, and said sheet glass is clipped between said upper glass and the said lower-glass, and said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass.

In order to solve the problems of the technologies described above, the invention provides the preparation method of above-mentioned convex surface vacuum glass, it comprises:

The first step according to the shape of the convex surface vacuum glass of required making and two blocks of sheet glass of size cutting desired size, and is carried out edging, chamfering, cleans, drying treatment;

Second step, with the glass after two processing pack into mould, be placed in the bending furnace, be warming up to 550～750 ℃ of glass remollescent temperature, rely on the gravity of glass self to make glass form convex surface downwards, and reduce to room temperature with stove;

The 3rd step, with the two blocks of glass of second step acquisition or the even coating of the face of weld periphery solder of a glass, evenly leave several aspirating holes on the solder, and said two glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, be warming up to more than the melt temperature of solder, reach the edge sealing temperature; Aspirating hole disappears; Stop heating, lower the temperature with stove, solder hermetic welds together two blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required convex surface vacuum glass.

In order to solve the problems of the technologies described above, the invention provides the preparation method of above-mentioned convex surface vacuum glass, when said convex surface vacuum glass was the convex surface toughened vacuum glass, the preparation method was following,

Second step, with the glass after two processing pack into mould, be placed in the bending furnace, be warming up to 550～750 ℃ of glass remollescent temperature, rely on the gravity of glass self to make glass form convex surface downwards, carry out air-cooled tempering subsequently;

The 3rd step; The two blocks of glass of second step acquisition or the face of weld periphery of a glass evenly are coated with solder; Evenly leave several aspirating holes on the solder; And said two glass consistencies from top to bottom are stacked together, to send in the vacuum edge sealing stove, said vacuum edge sealing stove and accessory has basic heating system and local heating system; The basis heating system can adopt mode such as nichrome wire, electrothermal tube, the hot plate of resistive heating etc., and the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, adopt basic heating system that said vacuum edge sealing furnace interior and upper and lower bulk glass are heated to a basal temperature earlier, adopt the local heating system that local heating is carried out in upper and lower glass periphery position again; Reach at short notice solder is heated to the fused purpose; Thereby reach the edge sealing temperature, aspirating hole disappears, and stops heating, lowers the temperature with stove; Solder hermetic welds together two blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required convex surface vacuum glass.

In order to solve the problems of the technologies described above; The invention provides a kind of planar vacuum glass, it comprises: upper and lower glass, and said upper and lower glass is sheet glass; The periphery of said upper glass and said lower-glass welds together through solder; Form the vacuum layer of a sealing between said upper glass and the said lower-glass, have in the said vacuum layer to be the upholder that dot matrix is arranged, have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass.

Wherein, said planar vacuum glass can also comprise one flat plate glass, and said sheet glass is clipped between said upper glass and the said lower-glass, and said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass.

Wherein, said edge sealing bar frame adopts the preparation of silk screen printing cryogenic glass powder.

Wherein, above support is processed by metal, pottery or glass, preferably adopts the preparation of silk screen printing cryogenic glass powder.

In order to solve the problems of the technologies described above, the invention provides the preparation method of above-mentioned planar vacuum glass, it comprises:

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

Second step; Utilize screen printing technique and cryogenic glass powder to prepare edge sealing bar frame and upholder in the glass after two processing at least one; If at two edge sealing bar frames that all prepare on glass; After guaranteeing upper and lower glass alignment, the edge sealing bar frame of upper glass can be embedded between the edge sealing bar frame of lower-glass;

The 3rd step; The solder of packing between the two blocks of glass that second step was obtained or the edge sealing bar frame of a glass; Solder is a little more than edge sealing bar frame; Several groove or slits that pass through solder of uniform distribution are as aspirating hole on it, and said two glass consistencies from top to bottom are stacked together, and send in the vacuum edge sealing stove;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, be warming up to more than the melt temperature of solder, reach the edge sealing temperature; Aspirating hole disappears; Stop heating, lower the temperature with stove, solder hermetic welds together two blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required planar vacuum glass.

In order to solve the problems of the technologies described above, the invention provides the preparation method of above-mentioned planar vacuum glass, when said planar vacuum glass was dull and stereotyped toughened vacuum glass, the preparation method was following, and it comprises:

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

Second step; Utilize screen printing technique and cryogenic glass powder to prepare edge sealing bar frame and upholder at least one in the glass after two processing; If at two edge sealing bar frames that all prepare on glass; After guaranteeing upper and lower glass alignment, the edge sealing bar frame of upper glass can be embedded between the edge sealing bar frame of lower-glass; And two blocks of glass are sent into carry out tempering in the annealing furnace and handle;

The 3rd step; The solder of packing between the two blocks of glass that second step was obtained or the edge sealing bar frame of a glass; Solder is a little more than edge sealing bar frame, and several groove or slits that pass through solder of uniform distribution and are stacked together said two glass consistencies from top to bottom as aspirating hole on it; Send in the vacuum edge sealing stove; Said vacuum edge sealing stove and accessory has basic heating system and local heating system, and basic heating system can adopt mode such as nichrome wire, electrothermal tube, hot plate of resistive heating etc., and the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, adopt basic heating system that said vacuum edge sealing furnace interior and upper and lower bulk glass are heated to a basal temperature earlier, adopt the local heating system that local heating is carried out in upper and lower glass periphery position again; Reach at short notice solder is heated to the fused purpose; Thereby reach the edge sealing temperature, aspirating hole disappears, and stops heating, lowers the temperature with stove; Solder hermetic welds together two blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required planar vacuum glass.

Beneficial effect of the present invention:

The upper and lower glass of vacuum glass of the present invention is convex glass; Because glass itself has very high ultimate compression strength; So rely on the shape of convex glass to resist normal atmosphere, can not put or put less upholder, not only simplify vacuum glass manufacture craft, reduce production costs; Make that the production of vacuum glass is more easy, and can improve transparency, intensity and heat insulation, the sound insulation and the resisting wind press capacity of vacuum glass.The periphery of the upper and lower glass of vacuum glass contains edge sealing bar frame; Make that the edge sealing of vacuum glass is easier; The mutual chimeric sealing effectiveness of glass under the distortion situation that guaranteed of last lower sealing edge bar frame has the bonding strength higher than low temperature welding glass between edge sealing bar frame and the last lower-glass, increased sealing surface area and airtight layer thickness between the last lower-glass; Solved the uneven problem of sealing at existing vacuum glass edge; Strengthen the sticking power and the adhesion strength of sealing-in greatly, increased the tightness of vacuum layer between the upper and lower glass, the life-span of having improved vacuum glass; And can save and make and the great bleeding point of sealing difficulty; Realized that the single stage method mass prepares vacuum glass and toughened vacuum glass, promoted the suitability for industrialized production of vacuum glass and toughened vacuum glass, greatly improved vacuum glass productivity and qualification rate, reduced the production cost of vacuum glass.In addition,, strengthened the thickness of vacuum layer, helped keeping vacuum tightness, used even under the situation of vacuum breaking, also can work as hollow glass owing to adopt convex glass.At last, convex glass can effectively alleviate the light pollution of glass curtain wall with light scatter.

Description of drawings

Fig. 1 is a convex surface vacuum glass structural representation of the present invention;

Fig. 2 has the convex surface vacuum glass structural representation of edge sealing bar frame for lower-glass of the present invention;

Fig. 3 all has the convex surface vacuum glass structural representation of edge sealing bar frame for upward lower-glass of the present invention;

Fig. 4 all has edge sealing bar frame and lower-glass that the area vacuum glass structure synoptic diagram of upholder is arranged for the lower-glass of going up of the present invention;

Fig. 5 all has edge sealing bar frame and lower-glass that the vacuum glass structural representation of upholder is arranged for the lower-glass of going up of the present invention;

Fig. 6 all has the area vacuum glass structure synoptic diagram of edge sealing bar frame and upholder for upward lower-glass of the present invention;

Fig. 7 is the convex surface vacuum glass structural representation of of the present invention pair of vacuum layer;

Fig. 8 all has the convex surface vacuum glass structural representation of two vacuum layer of edge sealing bar frame for upward lower-glass of the present invention.

Among the figure: 1. upper glass, 2. lower-glass, 3. solder, 4. the edge sealing bar frame on the lower-glass, 5. the edge sealing bar frame of upper glass, the 6. upholder on the lower-glass, the 7. upholder on the upper glass, 8. intermediate glass.

Embodiment

The invention provides a kind of convex surface vacuum glass; It comprises: upper glass, lower-glass, and the periphery of said upper glass and said lower-glass welds together through solder, forms the vacuum layer of a sealing between said upper glass and the said lower-glass; Said upper glass and said lower-glass are convex glasses; The bow height of said convex glass is not less than 0.1mm, is preferably 0.1～200mm, and convex surface toward the outer side.

Said convex surface vacuum glass can also comprise one flat plate glass, and said sheet glass is clipped between said upper glass and the said lower-glass, and said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass.

Said convex surface vacuum glass may further include polylith sheet glass, thereby comprises the vacuum layer of a plurality of sealings.

The upper glass of convex surface vacuum glass and lower-glass utilize the convex shape of glass to resist normal atmosphere, make two blocks of glass can not press together, keep the vacuum layer between two glass, have saved the very big upholder of making and installation difficulty; Do not had stopping of upholder, the transparency and the visibility of vacuum glass are better; Do not had the conduction of upholder, the heat insulation and sound-proofing properties of vacuum glass is better; Convex configuration makes glass that higher ultimate compression strength and bending strength arranged, and the resisting wind press capacity of vacuum glass is better; Convex configuration makes vacuum layer that bigger space arranged, and more can keep the life-span of vacuum state, vacuum glass longer for a long time, even loss of vacuum, its performance also is superior to general double glazing.

The convex surface bow height of upper and lower two blocks of convex glasses of said vacuum glass is preferably 0.1～200mm, further is preferably 1～20mm, is advisable not protrude in outside the sash during as windowpane.

Said upper and lower glass can have identical bow height, also can have different bows high according to the difference of width inside and outside the sash.

Said upper and lower glass is prepared from through sheet glass, and its preparation method further comprises: in bending furnace, utilize mould through the gravity of glass self or the pressure that adds sheet glass to be prepared into convex glass.

Said preparation method further comprises:

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

Second step; Two blocks of sheet glass after handling are respectively charged into forming mould, put into bending furnace; Be warming up to glass transition temperature; Rely on the gravity of glass self or the pressure that adds to make glass form convex surface downwards, subsequently furnace temperature is reduced to room temperature, promptly obtain to be shaped as the upper and lower glass of convex glass.

If obtain the material of upper and lower glass is toughened glass; In said second step; Two blocks of sheet glass after handling are respectively charged into forming mould, put into bending furnace, be warming up to glass transition temperature, rely on the gravity of glass self to make glass form convex surface downwards; Carry out air-cooled tempering subsequently, promptly acquisition is shaped as convex glass, material is the upper and lower glass of toughened glass.

Said glass transition temperature is preferably 550 ℃～750 ℃.

The convex surface bow of said convex surface vacuum glass high shape and size and purposes decision by glass; Under the prerequisite that satisfies opposing normal atmosphere and purposes, the bow height is tried one's best littler, is advisable with 3～9mm when being used for the common door window glass; The space that 6～18mm is promptly arranged between two blocks of glass; Be equivalent to existing double glazing, under atmospheric pressure almost plane is best, with cost and the occupation space that obtains visual effect preferably and reduce said vacuum glass.

Said solder comprises commercially available low temperature glass solder and low melting point metal or solder; The preferred melt temperature of said solder is about 450 ℃ crown glass scolder, the preferred tin of said low melting point metal or solder or tin alloy, zinc or zinc alloy, magnesium or magnesiumalloy.

Said solder is coated on one or two the face of weld periphery and the face of weld periphery of said sheet glass of upper and lower glass at least.

Said solder directly contacts with upper and lower glassy phase, perhaps contacts with upper and lower glass and the sheet glass that is clipped between the lower-glass.

The formation of the vacuum glass of said single vacuum layer can be adopted the bleeding point method or adopt single stage method to form; Said bleeding point method adopts the technology of preparing of existing vacuum glass; Comprise system aspirating hole step, high temperature edge sealing step, vacuumize step and envelope bleeding point step; Said single stage method is directly to accomplish at vacuum edge sealing furnace high-temperature edge sealing, preferably adopts single stage method to form.

Said single stage method further comprises the steps:

With the even coating solder of one in the upper and lower glass or two face of weld periphery, evenly leave several grooves that pass through the eutectic welding strip or slit on the solder as aspirating hole; Upper and lower glass consistency from top to bottom is stacked together, sends in the vacuum edge sealing stove; To 0.1Pa, and heating makes that temperature rises to more than the melt temperature of solder in the stove, reaches the edge sealing temperature to vacuum edge sealing stove evacuation, and aspirating hole disappears; Stop heating, reduce furnace temperature to room temperature, said solder welds together upper and lower glass is bubble-tight, thereby obtains needed convex surface vacuum glass.

It is following that the single stage method of said two vacuum layer convex surface vacuum glass forms step:

The periphery of last convex glass, following convex glass and middle sheet glass face of weld evenly is coated with solder; Evenly leave several grooves that pass through the eutectic welding strip or slit on the solder as aspirating hole; And three glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; To vacuum edge sealing stove evacuation to 0.1Pa, and heating make that temperature rises to more than the melt temperature of solder in the stove; Reach the edge sealing temperature; Aspirating hole disappears; Stop heating, lower the temperature with stove, solder hermetic welds together three blocks of glass, opens fire door and obtains required convex surface vacuum glass.

Said edge sealing temperature is preferably 150～550 ℃, when adopting low melting point metal or solder, further is preferably 290～350 ℃; When adopting low temperature glass solder, further be preferably 380～470 ℃, the preferred temperature of fusion of said low temperature glass solder is about 450 ℃ crown glass scolder.

When preparation be toughened glass the time, preferentially select low melting point metal or solder for use, like tin or tin alloy, zinc or zinc alloy, magnesium or magnesiumalloy etc., to select lower edge sealing temperature.

When the preparation be toughened glass the time; Because of the too high annealed problem of welding temperature; Vacuum edge sealing stove can have basic heating system and local heating system; The basis heating system can adopt mode such as nichrome wire, electrothermal tube, the hot plate of resistive heating etc., with vacuum edge sealing furnace interior and glass heats to a basal temperature; Utilizing modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating again is that local heating is carried out in the edge sealing position to the periphery of glass, reaches at short notice solder is heated to the fused purpose.

The scope of said basic Heating temperature is preferably 280～320 ℃, and the scope of melt temperature is preferably 380～470 ℃.

Be employed in the mode of automatic edge sealing in the vacuum edge sealing stove, save and make and very big bleeding point and the extraction pipe of sealing difficulty, simplified technological process, lowered production cost, shortened the production cycle, improved production efficiency.

Because tempering and half tempered glass have higher intensity, so under identical shape and size, the convex surface of tempering or half tempered convex glass bow height can be littler, tempering or half tempered convex glass can be more flat.Owing to utilize forming mould, glass is clipped in relies on the moulding of exerting pressure between the upper and lower mould with upper and lower mould; So convex glass has the more shape of rule; And prevent the distortion in the tempering process, so edge sealing is simpler, sealing property and intensity are also higher.Because vacuum edge sealing stove and accessory has basic heating system and local heating system; The temperature of glass edge is rapidly heated to welding temperature; And tempering or half tempered glass are under lower basal temperature, in the long period and higher local temperature, in short time phenomenon can not take place significantly to anneal, so can guarantee to obtain tempering or half tempered vacuum glass.

In the said vacuum layer, when high big, convex shape that can rely on glass self of less or convex surface bow and intensity opposing normal atmosphere, can not establish upholder when the planar dimension of upper and lower glass; When upper and lower glass can not rely on convex shape and the intensity opposing normal atmosphere of self, the upholder of a small amount of necessity should be set, upholder is resisted normal atmosphere jointly with glass.

Do not had stopping of upholder, the transparency and the visibility of convex surface vacuum glass are better; Do not had the conduction of upholder, the heat insulation and sound-proofing properties of convex surface vacuum glass is better.

The material of above support is low temperature glass, metal, pottery, glass or plastics, is preferably low temperature glass.

The above support minimum unit can be that the dot matrix of equilateral triangle is arranged, and the leg-of-mutton length of side is about 30～300mm, is preferably 50～150mm; Upholder is a strip; Its length is 0.3～5.0mm, be preferably 0.5～2.0mm; Width is 0.1～2.0mm, be preferably 0.2～1.0mm; Be 0.1～10.0mm highly, be preferably 0.5～3.0mm, the height of upholder be higher than edge sealing bar frame height 0.1～2.0mm, be preferably 0.1～0.5mm; Upholder also can be for cylindric; Its diameter is 0.1～3.0mm, be preferably 0.3～2.0mm; Be 0.1～5.0mm highly, be preferably 0.5～3.0mm, the height of upholder is higher than up and down two blocks of glass and closes upholder position spatial altitude 0～0.3mm behind the sheet, is preferably 0.1～0.2mm.

Upholder preferably adopts cryogenic glass powder or low temperature glass solder to utilize screen printing technique to process, and the sintering temperature of said low temperature glass solder is lower than cryogenic glass powder.

When upholder is printed on one when on glass, be preferably cylindric; When upholder is printed on up and down two when on glass simultaneously, be preferably strip.

When upholder was printed before glass tempering, preferred cryogenic glass powder was processed; When upholder was printed behind glass tempering, preferred low temperature glass solder was processed.

When last lower-glass all has the strip upholder; The upholder vertical pile supports, and last lower-glass, and contacts for line between upholder and the glass still for point contacts through upholder; Increased contact area; Reduced the tension stress of glass in support place, thus the quantity of upholder can be reduced, thus further improve the transparency of glass, heat insulation and sound-proofing properties.

The material of said upper and lower glass can be simple glass or toughened glass or half tempered glass or low emissivity glass or wire glass or rolled glass or hot melt glass; Or the combination of above any two or three kinds of glass, further be preferably toughened glass, half tempered glass and low emissivity glass.

The shape and size of said vacuum glass are being satisfied under the prerequisite of request for utilization by the purposes decision of vacuum glass, and its shape is preferably square or circular.

Have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass.

The height of said edge sealing bar frame is preferably 0.1～10mm, further is preferably 0.1～1mm, and width is preferably 0.2～5mm, further is preferably 1～2mm.

Can leave several aspirating holes on the said edge sealing bar frame; Promptly perpendicular to edge sealing bar frame and along equally distributed groove of edge sealing bar frame or slit; Quantity is by the girth decision of upper and lower glass, and the about 50～150mm of spacing is advisable, and after said solder fusing, can seal said aspirating hole; Also can not stay aspirating hole, the formed space, rough surface that utilizes the solder that applies can be shortened the time that vacuumizes as the passage that vacuumizes but leave aspirating hole.

When only containing an edge sealing bar frame; Said solder is in the outside of said edge sealing bar frame, and when containing a plurality of edge sealing bar frame, said solder is in centre or the centre and the outside of said edge sealing bar frame; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the convex glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

When only containing an edge sealing bar frame; The periphery of preferred said lower-glass contains an edge sealing bar frame, and the periphery edge of edge sealing bar frame and said lower-glass has the space of 5mm～10mm, is used to be coated with said solder; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the convex glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

When upper glass and lower-glass respectively contain an edge sealing bar frame, the shape of two edge sealing bar frames and size or identical or different, it is identical to be preferably shape; Vary in size, at this moment, little edge sealing bar frame is included in the big edge sealing bar frame; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the convex glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

Further, the edge sealing bar frame of said lower-glass is Duoed one than the edge sealing bar frame of said upper glass, and promptly said upper glass contains an edge sealing bar frame at least; Said lower-glass contains two edge sealing bar frames at least; The edge sealing bar frame of said upper glass is inserted in the edge sealing bar frame of said lower-glass, and the edge sealing bar frame of said upper and lower glass is entrenched togather each other, and vacuum layer is carried out labyrinth seal; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the convex glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

The introducing of edge sealing bar frame not only can limit solder and dissolve the back and randomly flow, make edge sealing neatly good-looking; And play good supporting role; Make solder keep certain thickness, reinforced seal effect; The more important thing is that its Heating temperature is high, with last lower-glass bonding is more reliably arranged, surface irregularity, more firm combining arranged with solder, thus the resistance to air loss and the safety of raising vacuum glass.

Adopt edge sealing bar frame; Can be easy to utilize low melting point metal or alloy to realize the solder bonding metal of vacuum glass; Because the selectable scope of brazing temperature is very big, thus not only can whole heating glass, reduce the cost of process furnace and simplify production technique, and can reduce the edge sealing temperature significantly, shorten heat-up time; Thereby reduce production costs, enhance productivity, the more important thing is to guarantee tempering or the half tempered glass phenomenon of in heat-processed, can not annealing.

Said edge sealing bar frame is processed through the mode of squeezing, etching or printing, and said edge sealing bar frame comprises fin and groove, preferably adopts the silk screen printing cryogenic glass powder to process.

Said squeezing mode is that the sheet glass internal surface of packing into is had in the depression or the mold cavity of protruding lines, after pyroprocessing makes glass softening, sheet glass is exerted pressure, and forms fin and groove at the periphery of sheet glass.

Said etching mode is a known prior art, utilize method for printing screen that acid-proof ink is printed on sheet glass and do not need etched place, with corrosive acids such as hydrofluoric acid with there not being the acid-proof ink place to erode away groove on the sheet glass.

Said mode of printing is the method that adopts silk screen printing or mould printing or stamping machine, cryogenic glass powder is imprinted on forms the fin that is raised in surface of plate glass on the sheet glass.

When said edge sealing bar frame adopts the silk screen printing cryogenic glass powder to prepare, can be one-step print, also can be repeatedly to print.

Make the low temperature glass solder that its melt temperature of cryogenic glass powder of edge sealing bar frame is used far above edge sealing, not only low price, performance are good, and with glass better bonding strength are arranged; After the edge sealing bar frame of last lower-glass is chimeric mutually; Not only reduced the edge sealing low temperature glass solder consumption, reduced requirement to the edge sealing low temperature glass solder; And increased air retaining wall thickness, improved the sealing strength of last lower-glass; The more important thing is to solve the sealing problem that the buckling deformation that in the tempering process, produces because of glass brings, thereby improve the qualification rate of product.

When what prepare is toughened vacuum glass, because of the too high annealed problem of welding temperature, can adopt low melting point metal or solder during for solution toughened vacuum glass edge sealing.

Said low melting point metal or solder can be tin or tin alloy, zinc or zinc alloy, aluminum or aluminum alloy, magnesium or magnesiumalloy etc.

The present invention also provides a kind of convex surface vacuum glass; It comprises: upper glass, lower-glass; The periphery of said upper glass and said lower-glass welds together through solder, forms the vacuum layer of a sealing between said upper glass and the said lower-glass, and said upper glass and said lower-glass are convex glasses; The bow height of said convex glass is not less than 0.1mm, and convex surface toward the outer side;

The preparation method of the convex surface vacuum glass of said vacuum layer with a sealing is following:

Second step, with the glass after two processing pack into mould, be placed in the bending furnace, be warming up to 550～750 ℃ of glass remollescent temperature, rely on the gravity of glass self or the pressure that adds to make glass form convex surface downwards, and reduce to room temperature with stove;

The 3rd step, with the two blocks of glass of second step acquisition or the even coating of the face of weld periphery solder of a glass, leave several aspirating holes on the solder, and said two glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;

Said edge sealing temperature is preferably 150～550 ℃, when adopting low melting point metal or solder, further is preferably 290～350 ℃; When adopting low temperature glass solder, further be preferably 380～470 ℃.

The present invention also provides a kind of convex surface vacuum glass; It comprises: upper glass, lower-glass and sheet glass; Said sheet glass is clipped between said upper glass and the said lower-glass; Said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass, the periphery of said upper glass, said lower-glass and said sheet glass welds together through solder, and said upper glass and said lower-glass are convex glasses; The bow height of said convex glass is not less than 0.1mm, and convex surface toward the outer side;

The preparation method of the convex surface vacuum glass of said vacuum layer with two sealings is following:

The first step according to the shape of the convex surface vacuum glass of required making and three blocks of sheet glass of size cutting desired size, and is carried out edging, chamfering, cleans, drying treatment;

The 3rd step; Two blocks of glass or the face of weld periphery of a glass and the even coating of the face of weld periphery solder of remaining one flat plate glass with the acquisition of second step; Leave several aspirating holes on the solder; And said three glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, be warming up to more than the melt temperature of solder, reach the edge sealing temperature; Aspirating hole disappears; Stop heating, lower the temperature with stove, solder hermetic welds together three blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required convex surface vacuum glass.

The present invention also provides a kind of preparation method with convex surface vacuum glass of a vacuum layer, and it comprises:

The present invention also provides a kind of preparation method with convex surface vacuum glass of two vacuum layer, and it comprises:

The present invention also provides a kind of convex surface toughened vacuum glass; It comprises: the upper glass of tempering, the lower-glass of tempering; The periphery of said upper glass and said lower-glass welds together through solder, forms the vacuum layer of a sealing between said upper glass and the said lower-glass, and said upper glass and said lower-glass are convex glasses; The bow height of said convex glass is not less than 0.1mm, and convex surface toward the outer side;

The preparation method of the convex surface toughened vacuum glass of said vacuum layer with a sealing is following:

Second step, with the glass after two processing pack into mould, be placed in the bending furnace, be warming up to 550～750 ℃ of glass remollescent temperature, rely on the gravity of glass self or the pressure that adds to make glass form convex surface downwards, carry out air-cooled tempering subsequently;

The 3rd step; The two blocks of glass of second step acquisition or the face of weld periphery of a glass evenly are coated with solder; Leave several aspirating holes on the solder; And said two glass consistencies from top to bottom are stacked together, to send in the vacuum edge sealing stove, said vacuum edge sealing stove and accessory has basic heating system and local heating system; The basis heating system can adopt mode such as nichrome wire, electrothermal tube, the hot plate of resistive heating etc., and the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

The present invention also provides a kind of convex surface toughened vacuum glass; It comprises: the sheet glass of the upper glass of tempering, the lower-glass of tempering and tempering; Said sheet glass is clipped between said upper glass and the said lower-glass; Said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass, the periphery of said upper glass, said lower-glass and said sheet glass welds together through solder, and said upper glass and said lower-glass are convex glasses; The bow height of said convex glass is not less than 0.1mm, and convex surface toward the outer side;

The preparation method of the convex surface toughened vacuum glass of said vacuum layer with two sealings is following:

Second step, with the glass after two processing wherein pack into mould, be placed in the bending furnace, be warming up to 550～750 ℃ of glass remollescent temperature, rely on the gravity of glass self or the pressure that adds to make glass form convex surface downwards, carry out air-cooled tempering subsequently;

The 3rd step; Two blocks of glass or the face of weld periphery of a glass and the even coating of the face of weld periphery solder of remaining one flat plate glass with the acquisition of second step; Leave several aspirating holes on the solder; And said three glass consistencies from top to bottom are stacked together, to send in the vacuum edge sealing stove, said vacuum edge sealing stove and accessory has basic heating system and local heating system; The basis heating system can adopt mode such as nichrome wire, electrothermal tube, the hot plate of resistive heating etc., and the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, adopt basic heating system that said vacuum edge sealing furnace interior and upper and lower glass, middle sheet glass integral body are heated to a basal temperature earlier, adopt the local heating system that local heating is carried out in upper and lower glass periphery position again; Reach at short notice solder is heated to the fused purpose; Thereby reach the edge sealing temperature, aspirating hole disappears, and stops heating, lowers the temperature with stove; Solder hermetic welds together three blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required convex surface vacuum glass.

The preparation method that the present invention has also offered a kind of convex surface toughened vacuum glass with a vacuum layer is following:

The present invention also provides the preparation method of the convex surface toughened vacuum glass with two vacuum layer following:

Second step, with the glass after two processing wherein pack into mould, be placed in the bending furnace, be warming up to 550～750 ℃ of glass remollescent temperature, rely on the gravity of glass self to make glass form convex surface downwards, carry out air-cooled tempering subsequently;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, adopt basic heating system that said vacuum edge sealing furnace interior and upper and lower bulk glass are heated to a basal temperature earlier, adopt the local heating system that upper and lower glass and intermediary sheet glass peripheral position are carried out local heating again; Reach at short notice solder is heated to the fused purpose; Thereby reach the edge sealing temperature, aspirating hole disappears, and stops heating, lowers the temperature with stove; Solder hermetic welds together three blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required convex surface vacuum glass.

The present invention also provides a kind of planar vacuum glass; It comprises, upper and lower glass, and said upper and lower glass is sheet glass; The periphery of said upper glass and said lower-glass welds together through solder; Form the vacuum layer of a sealing between said upper glass and the said lower-glass, have in the said vacuum layer to be the upholder that dot matrix is arranged, have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass.

The height of said edge sealing bar frame is preferably 0.1～10mm, further is preferably 0.1～1mm, and width is preferably 0.2～5mm, further is preferably 1.0～2.0mm.

Several aspirating holes can be left on the said edge sealing bar frame, after said solder fusing, said aspirating hole can be sealed.

When only containing an edge sealing bar frame; Said solder is in the outside of said edge sealing bar frame, and when containing a plurality of edge sealing bar frame, said solder is in centre or the centre and the outside of said edge sealing bar frame; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the sheet glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

When only containing an edge sealing bar frame; The periphery of preferred said lower-glass contains an edge sealing bar frame, and the periphery edge of edge sealing bar frame and said lower-glass has the space of 5mm～10mm, is used to be coated with said solder; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the sheet glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

When upper glass and lower-glass respectively contain an edge sealing bar frame, the shape of two edge sealing bar frames and size or identical or different, it is identical to be preferably shape; Vary in size, at this moment, little edge sealing bar frame is included in the big edge sealing bar frame; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the sheet glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

Further, the edge sealing bar frame of said lower-glass is Duoed one than the edge sealing bar frame of said upper glass, and promptly said upper glass contains an edge sealing bar frame at least; Said lower-glass contains two edge sealing bar frames at least; The edge sealing bar frame of said upper glass is inserted in the middle of the edge sealing bar frame of said lower-glass, and the edge sealing bar frame of said upper and lower glass is entrenched togather each other, and vacuum layer is carried out labyrinth seal; Said edge sealing bar frame is when the upper surface of the middle sheet glass of the sheet glass with two vacuum layer; Identical with said lower-glass, when the lower surface of said sheet glass, identical with said upper glass.

Said planar vacuum glass can also comprise one flat plate glass, and said sheet glass is clipped between said upper glass and the said lower-glass, and said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass.

Said planar vacuum glass may further include polylith sheet glass, thereby comprises the vacuum layer of a plurality of sealings.

The formation of said single vacuum layer can be adopted the bleeding point method or adopt single stage method to form; Said bleeding point method adopts the technology of preparing of existing vacuum glass; Comprise system aspirating hole step, high temperature edge sealing step, vacuumize step and envelope bleeding point step; Said single stage method is directly to accomplish at vacuum edge sealing furnace high-temperature edge sealing, preferably adopts single stage method to form.

Said single stage method further comprises the steps:

With the even coating solder of one in the upper and lower glass or two face of weld periphery, evenly leave several grooves that pass through the eutectic welding strip or slit on the solder as aspirating hole; Also can not stay aspirating hole, the formed space, rough surface that utilizes the solder that applies can be shortened the time that vacuumizes as the passage that vacuumizes but leave aspirating hole; Upper and lower glass consistency from top to bottom is stacked together, sends in the vacuum edge sealing stove; To 0.1Pa, and heating makes that temperature rises to more than the melt temperature of solder in the stove, reaches the edge sealing temperature to vacuum edge sealing stove evacuation, and aspirating hole disappears; Stop heating, reduce furnace temperature to room temperature, said solder welds together upper and lower glass is bubble-tight, thereby obtains needed planar vacuum glass.

It is following that the single stage method of said two vacuum layer forms step:

The periphery of upper glass, lower-glass and middle sheet glass face of weld evenly is coated with solder, leaves several aspirating holes on the solder, and three glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; To vacuum edge sealing stove evacuation to 0.1Pa, and the heating temperature is risen to more than the melt temperature of solder; Reach the edge sealing temperature; Aspirating hole disappears; Stop heating, lower the temperature with stove, solder hermetic welds together two blocks of glass, opens fire door and obtains required planar vacuum glass.

When preparation be toughened glass the time, preferentially select low melting point metal or solder for use, to select lower edge sealing temperature.

In said vacuum layer, upholder can be set, upholder is resisted normal atmosphere jointly with glass.

The above support minimum unit can be that the dot matrix of equilateral triangle is arranged, and the leg-of-mutton length of side is about 30～300mm, is preferably 50～150mm; Upholder is a strip; Its length is 0.3～5.0mm, be preferably 0.5～2.0mm; Width is 0.1～2.0mm, be preferably 0.2～1.0mm; Be 0.1～10.0mm highly, be preferably 0.2～3.0mm, the height of upholder be higher than edge sealing bar frame height 0.1～2.0mm, be preferably 0.1～0.5mm; Upholder also can be for cylindric; Its diameter is 0.1～3.0mm, be preferably 0.3～2.0mm; Be 0.1～5.0mm highly, be preferably 0.5～3.0mm, the height of upholder is higher than up and down two blocks of glass and closes upholder position spatial altitude 0.0～0.3mm behind the sheet, is preferably 0.1～0.2mm.

Said solder comprises low temperature glass solder and low melting point metal or solder, and said solder is coated on one or two the face of weld periphery and the face of weld periphery of said sheet glass of upper and lower glass at least.

The present invention also provides a kind of planar vacuum glass with a vacuum layer; It comprises: upper glass, lower-glass; Said upper and lower glass is sheet glass, and the periphery of said upper glass and said lower-glass welds together through solder, forms the vacuum layer of a sealing between said upper glass and the said lower-glass; Have in the said vacuum layer to be the upholder that dot matrix is arranged, have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass;

The preparation method of the planar vacuum glass of said vacuum layer with a sealing is following:

Second step; Utilize screen printing technique to prepare edge sealing bar frame and upholder in the glass after two processing at least one; If at two edge sealing bar frames that all prepare on glass, guarantee upper and lower glass alignment after, the edge sealing bar frame of upper glass can be embedded between the edge sealing bar frame of lower-glass;

The 3rd step, the solder of packing between the two blocks of glass that second step was obtained or the edge sealing bar frame of a glass, and said two glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;

The present invention also provides a kind of planar vacuum glass with two vacuum layer; It comprises: upper glass, lower-glass and sheet glass; Said upper and lower glass is sheet glass; Said sheet glass is clipped between said upper glass and the said lower-glass, and said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass, all has in the said vacuum layer to be the upholder that dot matrix is arranged; The periphery of said upper glass and said lower-glass welds together through solder, has at least the periphery of a glass to contain an edge sealing bar frame at least in said two vacuum layer;

The preparation method of the planar vacuum glass of said vacuum layer with two sealings is following:

The first step according to the shape of the planar vacuum glass of required making and three blocks of sheet glass of size cutting desired size, and is carried out edging, chamfering, cleans, drying treatment;

Second step; Utilize screen printing technique to prepare edge sealing bar frame and upholder at least on two in the glass after three processing; If at three edge sealing bar frames that all prepare on glass; After guaranteeing upper and lower glass alignment, between the edge sealing bar frame of sheet glass, the edge sealing bar frame of middle sheet glass can be embedded between the edge sealing bar frame of lower-glass in the middle of the edge sealing bar frame of upper glass can be embedded in;

The 3rd step, the solder of packing between the edge sealing bar frame of the glass that second step was obtained, and said three glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, be warming up to more than the melt temperature of solder, reach the edge sealing temperature; Aspirating hole disappears; Stop heating, lower the temperature with stove, solder hermetic welds together three blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required vacuum glass.

The present invention also provides a kind of preparation method with planar vacuum glass of a vacuum layer, and it comprises:

The present invention also provides a kind of preparation method with planar vacuum glass of two vacuum layer, and it comprises:

The present invention also provides a kind of dull and stereotyped toughened vacuum glass with a vacuum layer; It comprises: the upper glass of tempering, the lower-glass of tempering; Said upper and lower glass is sheet glass; The periphery of said upper glass and said lower-glass welds together through solder; Form the vacuum layer of a sealing between said upper glass and the said lower-glass, have in the said vacuum layer to be the upholder that dot matrix is arranged, have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass;

The preparation method of the dull and stereotyped toughened vacuum glass of said vacuum layer with a sealing is following:

Second step; Utilize screen printing technique to prepare edge sealing bar frame and upholder in the glass after two processing at least one; If at two edge sealing bar frames that all prepare on glass, guarantee upper and lower glass alignment after, the edge sealing bar frame of upper glass can be embedded between the edge sealing bar frame of lower-glass; And two blocks of glass are sent into carry out tempering in the annealing furnace and handle;

The 3rd step; The solder of packing between the two blocks of glass that second step was obtained or the edge sealing bar frame of a glass; And said two glass consistencies from top to bottom are stacked together; Send in the vacuum edge sealing stove, said vacuum edge sealing stove and accessory has basic heating system and local heating system, and basic heating system can adopt mode such as nichrome wire, electrothermal tube, hot plate of resistive heating etc.; Or the mode that adopts circulating air to heat, the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

The present invention also provides a kind of dull and stereotyped toughened vacuum glass with two vacuum layer, and it comprises:

The sheet glass of the upper glass of tempering, the lower-glass of tempering and tempering; Said upper and lower glass is sheet glass; Said sheet glass is clipped between said upper glass and the said lower-glass; Said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass, the periphery of said upper glass and said lower-glass welds together through solder, has at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass;

The preparation method of the dull and stereotyped toughened vacuum glass of said vacuum layer with two sealings is following:

Second step; Utilize screen printing technique to prepare edge sealing bar frame and upholder at least on two in the glass after three processing; If at three edge sealing bar frames that all prepare on glass; After guaranteeing upper and lower glass alignment, between the edge sealing bar frame of sheet glass, the edge sealing bar frame of middle sheet glass can be embedded between the edge sealing bar frame of lower-glass in the middle of the edge sealing bar frame of upper glass can be embedded in; And will at least two blocks upper and lower glass send into and carry out tempering in the annealing furnace and handle;

Said vacuum edge sealing stove and accessory has basic heating system and local heating system; The basis heating system can adopt mode such as nichrome wire, electrothermal tube, the hot plate of resistive heating etc., and the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

The 4th step; To said vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, adopt basic heating system that said vacuum edge sealing furnace interior and upper and lower bulk glass are heated to a basal temperature earlier, adopt the local heating system that upper and lower glass, intermediary sheet glass peripheral position are carried out local heating again; Reach at short notice solder is heated to the fused purpose; Thereby reach the edge sealing temperature, aspirating hole disappears, and stops heating, lowers the temperature with stove; Solder hermetic welds together three blocks of glass, and the fire door of opening vacuum edge sealing stove obtains required dull and stereotyped toughened vacuum glass.

The present invention also provides a kind of preparation method with dull and stereotyped toughened vacuum glass of a vacuum layer, and it comprises:

The 3rd step; The solder of packing between the two blocks of glass that second step was obtained or the edge sealing bar frame of a glass; And said two glass consistencies from top to bottom are stacked together; Send in the vacuum edge sealing stove; Said vacuum edge sealing stove and accessory has basic heating system and local heating system, and basic heating system can adopt mode such as nichrome wire, electrothermal tube, hot plate of resistive heating etc., and the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

The present invention also provides a kind of preparation method of dull and stereotyped toughened vacuum glass of the vacuum layer with two sealings, and it comprises:

The 3rd step, the solder of packing between the edge sealing bar frame of the glass that second step was obtained, and said three glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; Said vacuum edge sealing stove and accessory has basic heating system and local heating system; The basis heating system can adopt mode such as nichrome wire, electrothermal tube, the hot plate of resistive heating etc., and the local heating system can adopt modes such as resistive heating, infrared heating, LASER HEATING, electromagnetism heating, microwave heating;

Below adopt embodiment and accompanying drawing to specify embodiment of the present invention, how the utilisation technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can make much of and enforcement according to this.

Embodiment 1: referring to Fig. 1, vacuum glass is made up of with following convex glass 2 last convex glass 1, and the periphery of two blocks of glass welds together through low temperature glass solder 3, and the centre is a vacuum layer.Its making method is following: at first according to the shape of made vacuum glass and two blocks of sheet glass of size cutting desired size, and carry out edging, chamfering, cleaning, drying; Secondly with two blocks of glass pack into mould, be placed in the bending furnace, be warming up to 550-750 ℃ of glass remollescent temperature, rely on the gravity of glass self to make glass form convex surface downwards, and reduce to room temperature with stove; Periphery with two blocks of glass or a glass evenly is coated with low temperature glass solder once more, evenly leaves several aspirating holes on the low temperature glass solder, and two glass consistencies from top to bottom are stacked together, and sends in the vacuum edge sealing stove; The back vacuumizes, the limit heating; The melt temperature that be evacuated to below the 0.1Pa, is warming up to low temperature glass solder is more than 450 ℃, and aspirating hole disappears, and stops heating, lowers the temperature with stove; Low temperature glass solder hermetic welds together two blocks of glass, opens fire door and obtains required vacuum glass.

Innovative point of the present invention is: vacuum glass utilizes the convex shape of glass to resist normal atmosphere, makes two blocks of glass can not press together, keep the vacuum layer between two glass, has saved the very big upholder of manufacture difficulty; Be employed in the mode of automatic edge sealing in the vacuum oven, save and make and very big bleeding point and the extraction pipe of sealing difficulty, simplified technological process, lowered production cost, shortened the production cycle, improved production efficiency; Do not had stopping of upholder, the transparency and the visibility of vacuum glass are better; Do not had the conduction of upholder, the heat insulation and sound-proofing properties of vacuum glass is better; Do not had bleeding point, the outward appearance of vacuum glass is more beautiful, it is more convenient to transport and install, failure rate is lower; Convex configuration makes glass that higher ultimate compression strength and bending strength arranged, and the resisting wind press capacity of vacuum glass is better; Convex configuration makes vacuum layer that bigger space arranged, and more can keep the life-span of vacuum state, vacuum glass longer for a long time, even loss of vacuum, its performance also is superior to general double glazing.

Embodiment 2: referring to Fig. 1, one in two blocks of glass is low emissivity glass, and other all are same as embodiment 1.

Embodiment 3: referring to Fig. 1; Two blocks of glass are toughened glass or half tempered glass; Wherein one still is low emissivity glass; Its making method is following: at first according to the shape of made vacuum glass and one flat plate glass and low emissivity glass of size cutting desired size, and carry out edging, chamfering, cleaning, drying; Secondly two blocks of glass are respectively charged in two forming moulds, this forming mould has mold and bed die (being formpiston and former), and glass is clipped between mold and the bed die; And can exert pressure and make upper and lower mould closes; The forming mould that glass is housed is placed in the bending furnace, is warming up to 650 ℃ of glass remollescent temperature, rely on the pressure that puts on the forming mould to make the glass in the forming mould form convex surface; Remove the mold cold tempering of sector-style of going forward side by side immediately, obtain tempering or half tempered glass; Periphery with two blocks of glass or a glass evenly is coated with low temperature glass solder once more; Evenly leave several aspirating holes on the low temperature glass solder; And two glass consistencies from top to bottom are stacked together, to send in the vacuum edge sealing stove, vacuum edge sealing stove and accessory has basic heating system and local heating system; At last while vacuumizing, utilize basic heating system heating; Be evacuated to below the 0.1Pa, after basal temperature rises to 300 ℃, utilize local heating system such as far infra-red heater that low temperature glass solder is heated to melt temperature more than 450 ℃ again, aspirating hole disappears; The fused low temperature glass solder with two glass cementations together; Stop heating, lower the temperature with stove, low temperature glass solder hermetic welds together two blocks of glass, opens fire door and obtains required vacuum glass.

Because tempering and half tempered glass have higher intensity, so under identical shape and size, the convex curvature of tempering or half tempered convex glass can be bigger.Owing to utilize the upper and lower die pressure moulding of forming mould, so convex glass has the more shape of rule, and prevents the distortion in the tempering process, so edge sealing is simpler, sealing property and intensity are also higher.Because vacuum edge sealing stove and accessory has basic heating system and local heating system; The temperature of glass edge is rapidly heated to welding temperature; And tempering or half tempered glass are under lower basal temperature, in the long period and higher local temperature, in short time phenomenon can not take place significantly to anneal, so can guarantee to obtain tempering or half tempered vacuum glass.

Embodiment 4: referring to Fig. 2; Two blocks of glass are toughened glass or half tempered glass, still low emissivity glass wherein, and one on glassly also has an edge sealing bar frame therein; Its making method is following: at first according to the shape of made vacuum glass and one flat plate glass and low emissivity glass of size cutting desired size; Carry out edging, chamfering, after cleaning, the drying, a preferred lower-glass on glass utilizes screen printing technique that cryogenic glass powder cream is printed into edge sealing bar frame therein; The width of edge sealing bar frame is 1.2mm, highly for 0.7mm, with the edge of glass the distance of 7mm is arranged; Other all are same as embodiment 3.

The introducing of edge sealing bar frame not only can limit low temperature glass solder and dissolve the back and randomly flow, make edge sealing neatly good-looking; And play good supporting role; Make low temperature glass solder keep certain thickness, reinforced seal effect; The more important thing is that its Heating temperature is high, with last lower-glass bonding is more reliably arranged, surface irregularity, more firm combining arranged with low temperature glass solder, thus the resistance to air loss and the safety of raising vacuum glass.In addition, edge sealing bar frame also is the key that single stage method prepares vacuum glass.

Embodiment 5: referring to Fig. 3; Two blocks of glass are toughened glass or half tempered glass, and still low emissivity glass wherein on glassly all has an edge sealing bar frame at two; Its making method is following: at first according to the shape of made vacuum glass and one flat plate glass and low emissivity glass of size cutting desired size; Carry out edging, chamfering, after cleaning, the drying, cryogenic glass powder cream is printed into edge sealing bar frame at two screen printing techniques that utilize on glass; Wherein upper glass has edge sealing bar frame, a lower-glass that two edge sealing bar frames are arranged; The size of upper glass edge sealing bar frame is between two edge sealing bars of lower-glass frame, and after last lower-glass closed sheet, the edge sealing bar frame of upper glass can be embedded between two edge sealing bar frames of lower-glass; Secondly with two blocks of glass pack into mould, be placed in the bending furnace; Be warming up to 550-750 ℃ of glass remollescent temperature; Rely on the gravity of glass self to make glass form convex surface downwards; Edge sealing bar frame also is in softening molten state and glassy bond together, carries out air-cooled tempering immediately, obtains tempering or half tempered glass; Evenly be coated with full low temperature glass solder between two edge sealing bar frames with lower-glass once more, and two glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove, vacuum edge sealing stove and accessory has basic heating system and local heating system; At last while vacuumizing, utilize basic heating system heating; Be evacuated to below the 0.1Pa, after basal temperature rises to 300 ℃; Utilize local heating system such as far infra-red heater that the low temperature glass solder in the edge sealing bar frame is heated to melt temperature more than 420 ℃ again; The edge sealing bar frame of upper glass is embedding under the effect of gravity between two edge sealing bar frames of lower-glass, and the fused low temperature glass solder stops heating, lowers the temperature with stove with two glass cementations together; Low temperature glass solder hermetic welds together two blocks of glass, opens fire door and obtains required vacuum glass.

Embodiment 6: referring to Fig. 4, two blocks of glass are toughened glass or half tempered glass, wherein one or low emissivity glass; On glassly all has an edge sealing bar frame at two; Its making method is following: at first according to the shape of made vacuum glass and one flat plate glass and low emissivity glass of size cutting desired size, carry out edging, chamfering, after cleaning, the drying; At two screen printing techniques that utilize on glass cryogenic glass powder cream is printed into edge sealing bar frame; Wherein upper glass has two edge sealing bar frames, lower-glass that three edge sealing bar frames are arranged, and the size of upper glass edge sealing bar frame is between two edge sealing bars of lower-glass frame, after last lower-glass closes sheet; The edge sealing bar frame of upper glass can be embedded between two edge sealing bar frames of lower-glass, and the width of each edge sealing bar frame is 1.5mm, highly for 0.7mm; And on lower-glass, print upholder simultaneously; Upholder is that minimum unit is the dot matrix arrangement of equilateral triangle, and the leg-of-mutton length of side is 70mm, and upholder is cylindric; Its diameter is 0.6mm, highly is 0.8mm that the height of upholder is higher than the height 0.1mm of edge sealing bar frame; Secondly two blocks of glass are sent into annealing furnace respectively, in the softening fusion of the high temperature action lower sealing edge bar frame of annealing furnace and glassy bond together, carry out air-cooled tempering immediately, obtain having the tempering or the half tempered glass of edge sealing bar frame; Fill the brazing metal glass putty or spread tinfoil paper or the tin silk between three edge sealing bar frames with lower-glass once more, and two glass consistencies from top to bottom are stacked together and leave certain space of bleeding, send in the vacuum edge sealing stove; The back vacuumizes, the limit heating; It is above as 240 ℃ to be evacuated to 0.1Pa melting temperature following, that be warming up to metallic tin; Metallic tin will melt; Two edge sealing bar frames of upper glass are embedding between three edge sealing bar frames of lower-glass under the effect of gravity, and melt metal tin with two glass cementations together; Continue to be warming up to more than 300 ℃, more help the desorb of glass adsorbed gas, the gas of desorb can be overflowed through liquid metal tin between the last lower-glass, thereby makes the vacuum tightness that reaches higher between the lower-glass; Stop heating, lower the temperature with stove, brazing metal tin hermetic welds together two blocks of glass, opens fire door and obtains required vacuum glass.

Embodiment 7: referring to Fig. 5; Two blocks of glass are toughened glass or half tempered glass, and still low emissivity glass wherein on glassly all has an edge sealing bar frame at two; Its making method is following: at first according to the shape of made vacuum glass and one flat plate glass and low emissivity glass of size cutting desired size; Carry out edging, chamfering, after cleaning, the drying, cryogenic glass powder cream is printed into edge sealing bar frame at two screen printing techniques that utilize on glass; Wherein upper glass has edge sealing bar frame, a lower-glass that two edge sealing bar frames are arranged; The size of upper glass edge sealing bar frame is between two edge sealing bars of lower-glass frame, and after last lower-glass closed sheet, the edge sealing bar frame of upper glass can be embedded between two edge sealing bar frames of lower-glass; Secondly with two blocks of glass pack into mould, be placed in the bending furnace; Be warming up to glass remollescent temperature, rely on the gravity of glass self to make glass form convex surface downwards, edge sealing bar frame also is in softening molten state and glassy bond together; Carry out air-cooled tempering immediately, obtain tempering or half tempered glass; Evenly be coated with full low temperature glass solder between two edge sealing bar frames with lower-glass once more; And on last or lower-glass, adopt low temperature glass solder to print upholder; Upholder is that the dot matrix parallel with edge sealing bar frame arranged, and the distance between 2 is 120mm, and upholder is cylindric; Its diameter is 1.2mm, highly for 2.0mm, the height of upholder is higher than up and down two blocks of glass and closes upholder position spatial altitude 0.1mm behind the sheet; Two glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove, vacuum edge sealing stove and accessory has basic heating system and local heating system; At last while vacuumizing, utilize basic heating system heating; After 300 ℃ of the softening sintering temperatures that be evacuated to below the 0.1Pa, basal temperature rises to upholder; Utilize local heating system such as far infra-red heater that the low temperature glass solder in the edge sealing bar frame is heated to more than the melt temperature again, the edge sealing bar frame of upper glass is embedding between two edge sealing bar frames of lower-glass under the effect of gravity, and the fused low temperature glass solder with two glass cementations together; Upholder also with two glass sinterings up and down together; Stop heating, lower the temperature with stove, low temperature glass solder hermetic welds together two blocks of glass, opens fire door and obtains required vacuum glass.

Upholder adopts low temperature glass solder to process, and lower sintering temperature is arranged, and makes it can sintering in the edge sealing process, and by means of its slightly high height, it can be bonded together going up lower-glass reliably, thereby play effective supporting; The existing outward appearance that is similar to sheet glass of the curved surface that curvature is bigger has the intensity higher than sheet glass again, thereby can reduce to reduce the quantity of upholder greatly, further improves the transparency of glass, heat insulation and sound-proofing properties.

Embodiment 8: referring to Fig. 6, two blocks of glass are toughened glass or half tempered glass, wherein one or low emissivity glass; On glassly all has an edge sealing bar frame at two; Its making method is following: at first according to the shape of made vacuum glass and one flat plate glass and low emissivity glass of size cutting desired size, carry out edging, chamfering, after cleaning, the drying; At two screen printing techniques that utilize on glass cryogenic glass powder cream is printed into edge sealing bar frame; Wherein upper glass has two edge sealing bar frames, lower-glass that three edge sealing bar frames are arranged, and the size of upper glass edge sealing bar frame is between two edge sealing bars of lower-glass frame, after last lower-glass closes sheet; The edge sealing bar frame of upper glass can be embedded between two edge sealing bar frames of lower-glass, and the width of each edge sealing bar frame is 1.5mm, highly for 0.7mm; Secondly two blocks of glass are sent into annealing furnace respectively, in the softening fusion of the high temperature action lower sealing edge bar frame of annealing furnace and glassy bond together, carry out air-cooled tempering immediately, obtain having the tempering or the half tempered glass of edge sealing bar frame; Fill the brazing metal glass putty or spread tinfoil paper between three edge sealing bar frames with lower-glass once more; And at the upper and lower low temperature glass solder printing upholder that adopts simultaneously on glass, upholder is that minimum unit is the dot matrix arrangement of equilateral triangle, and the leg-of-mutton length of side is 80mm; Upholder is a strip; Its length be 2mm, width be 0.60mm, highly for 0.5mm, the upholder of last lower-glass is orthogonal, it is crosswise shape that last lower-glass closes behind the sheet upholder overlapping; Two glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; The back vacuumizes, the limit heating; It is above as 240 ℃ to be evacuated to 0.1Pa melting temperature following, that be warming up to metallic tin; Metallic tin melts; Two edge sealing bar frames of upper glass between three edge sealing bar frames that embed lower-glass under the effect of gravity, melt metal tin with two glass cementations together, the upholder of last lower-glass is in contact with one another, overlapping be crosswise shape; Continue to be warming up to more than 300 ℃, make the upholder sintering curing, high temperature more helps the desorb of glass adsorbed gas, and the gas of desorb can be overflowed through liquid metal tin between the last lower-glass, thereby makes the vacuum tightness that reaches higher between the lower-glass; Stop heating, lower the temperature with stove, brazing metal tin hermetic welds together two blocks of glass, opens fire door and obtains required vacuum glass.

Last lower-glass all has the strip upholder; The upholder vertical pile supports, and last lower-glass, and contacts for line between upholder and the glass still for point contacts through upholder; Increased contact area; Reduced the tension stress of glass in support place, thus the quantity of upholder can be reduced, thus further improve the transparency of glass, heat insulation and sound-proofing properties.

Embodiment 9: referring to Fig. 7, vacuum glass is made up of last convex glass 1, middle sheet glass 8 and following convex glass 2, and the periphery of per two blocks of glass welds together through low temperature glass solder, and the centre is two vacuum layer.Its making method is following: at first according to the shape of made vacuum glass and three blocks of sheet glass of size cutting desired size, and carry out edging, chamfering, cleaning, drying; Secondly with two blocks of glass pack into mould, be placed in the bending furnace, be warming up to glass remollescent temperature, rely on the gravity of glass self to make glass form convex surface downwards, and reduce to room temperature with stove; Periphery with three blocks of glass or two blocks of glass or middle sheet glass face of weld evenly is coated with low temperature glass solder once more, evenly leaves several aspirating holes on the low temperature glass solder, and three glass consistencies from top to bottom are stacked together, and sends in the vacuum edge sealing stove; The back vacuumizes, the limit heating; The melt temperature that be evacuated to below the 0.1Pa, is warming up to low temperature glass solder is more than 450 ℃, and aspirating hole disappears, and stops heating, lowers the temperature with stove; Low temperature glass solder hermetic welds together two blocks of glass, opens fire door and obtains required vacuum glass.

Embodiment 10: referring to Fig. 8; Three blocks of glass are toughened glass or half tempered glass, and still low emissivity glass wherein on glassly all has an edge sealing bar frame at three; Its making method is following: at first according to the shape of made vacuum glass and two blocks of sheet glass and low emissivity glass of size cutting desired size; Carry out edging, chamfering, after cleaning, the drying, on the bonding surface of three blocks of glass, utilize screen printing technique that cryogenic glass powder cream is printed into edge sealing bar frame; Wherein upper glass has the upper surface of an edge sealing bar frame, intermediate glass to have two edge sealing bar frame lower surfaces to have edge sealing bar frame, a lower-glass that two edge sealing bar frames are arranged; The size of top edge sealing bar frame is between two following edge sealing bar frames, and after lower-glass closed sheet in going up, top edge sealing bar frame can be embedded between two following edge sealing bar frames; Secondly will be up and down two blocks of glass pack into mould, be placed in the bending furnace; Be warming up to glass remollescent temperature; Rely on the gravity of glass self to make glass form convex surface downwards; Edge sealing bar frame also is in softening molten state and glassy bond together, carries out air-cooled tempering immediately, obtains having the tempering or the half tempered glass of edge sealing bar frame; Intermediate glass directly advances annealing furnace, obtains having the tempering or the half tempered glass of edge sealing bar frame; Evenly be coated with full low temperature glass solder between two edge sealing bar frames with intermediate glass and lower-glass once more, and three glass consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove, vacuum edge sealing stove and accessory has basic heating system and local heating system; At last while vacuumizing, utilize basic heating system heating; Be evacuated to below the 0.1Pa, after basal temperature rises to 300 ℃; Utilize local heating system such as far infra-red heater that the low temperature glass solder in the edge sealing bar frame is heated to melt temperature more than 450 ℃ again; Between two edge sealing bar frames below top edge sealing bar frame embeds under the effect of gravity, the fused low temperature glass solder stops heating, lowers the temperature with stove with three glass cementations together; Low temperature glass solder hermetic welds together three blocks of glass, opens fire door and obtains required vacuum glass.

This intellecture property of primary enforcement that all are above-mentioned is not set restriction this product innovation of other forms of enforcement 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 only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.

Claims

1. convex surface vacuum glass; It is characterized in that; Comprise: upper glass, lower-glass, the periphery of said upper glass and said lower-glass welds together through solder, forms the vacuum layer of a sealing between said upper glass and the said lower-glass; Said upper glass and said lower-glass are convex glasses, and convex surface toward the outer side.

2. convex surface vacuum glass as claimed in claim 1 is characterized in that: have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass.

3. according to claim 1 or claim 2 convex surface vacuum glass; It is characterized in that: said convex surface vacuum glass can also comprise one flat plate glass; Said sheet glass is clipped between said upper glass and the said lower-glass, and said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass.

4. the preparation method of each described convex surface vacuum glass of claim 1 to 3 is characterized in that, comprising:

5. like the preparation method of each described convex surface vacuum glass of claim 1 to 3, it is characterized in that:

When said convex surface vacuum glass was the convex surface toughened vacuum glass, the preparation method was following,

6. planar vacuum glass; It is characterized in that, comprising: upper and lower glass, said upper and lower glass is sheet glass; The periphery of said upper glass and said lower-glass welds together through solder; Form the vacuum layer of a sealing between said upper glass and the said lower-glass, have in the said vacuum layer to be the upholder that dot matrix is arranged, have at least the periphery of a glass to contain an edge sealing bar frame at least in the said upper and lower glass.

7. planar vacuum glass as claimed in claim 6; It is characterized in that: said planar vacuum glass can also comprise one flat plate glass; Said sheet glass is clipped between said upper glass and the said lower-glass, and said upper glass and said lower-glass form the vacuum layer of two sealings respectively with said sheet glass.

8. like claim 6 or 7 described planar vacuum glass, it is characterized in that: said edge sealing bar frame adopts the preparation of silk screen printing cryogenic glass powder.

9. the preparation method of each described planar vacuum glass of claim 6 to 8 is characterized in that, comprising:

10. like the preparation method of each described planar vacuum glass of claim 6 to 8, it is characterized in that:

When said planar vacuum glass was dull and stereotyped toughened vacuum glass, the preparation method was following,