CN103420584A - Double-vacuum layer exhaust opening structure and manufacturing method thereof - Google Patents
Double-vacuum layer exhaust opening structure and manufacturing method thereof Download PDFInfo
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- CN103420584A CN103420584A CN2013102987687A CN201310298768A CN103420584A CN 103420584 A CN103420584 A CN 103420584A CN 2013102987687 A CN2013102987687 A CN 2013102987687A CN 201310298768 A CN201310298768 A CN 201310298768A CN 103420584 A CN103420584 A CN 103420584A
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
A double-vacuum layer exhaust opening structure is characterized in that openings are formed in upper glass and middle glass of vacuum glass to serve as two exhaust openings, two seal grooves are formed above or inside the two exhaust openings respectively; two seal covers are arranged on the seal grooves respectively, and the edges of the seal covers are inserted into the seal grooves respectively; exhaust passages are formed between the seal covers and the seal grooves; after edge sealing for the upper, lower and middle glass, metal solder is placed into the two seal grooves or on the seal covers respectively; then vacuumizing and heating are performed on a vacuum heating furnace, so that the metal solder can be molten to be liquid; the liquid is stored in the seal grooves, and the edges of the seal covers are immersed in the liquid, so that the exhaust openings are automatically sealed by utilizing the liquid sealing principle; after the liquid is solidified due to temperature drop, the airtight sealing is realized. With adoption of the method disclosed by the invention, batch production can be realized, production efficiency and qualification rate of the vacuum glass can be greatly improved, and production cost is lowered.
Description
Technical field
The invention belongs to the vacuum glass field, relate in particular to structure and the making method of a kind of pair of vacuum layer bleeding point.
Background technology
Existing vacuum glass generally is comprised of two or three blocks of sheet glass, glass surrounding low temperature glass solder edge sealing, and there is small upholder centre, makes to form between two blocks of glass the thin vacuum layer of 0.1～0.2mm thickness by bleeding.Due to the heat transfer that there is no gas, transaudient, the internal surface of glass can have again transparent low thermal radiation film, so vacuum glass has well heat insulation and soundproof effect, is one of best energy-saving glass of performance.
The gordian technique of existing vacuum glass has: the one, and edge sealing, the 2nd, the laying of upholder, the 3rd, the acquisition of vacuum and maintaining.The mode that existing vacuum glass obtains vacuum mainly contains following two kinds: (1) is at first in a slice punching on glass, to prepare bleeding point, then weld the Glass tubing of bleeding on bleeding point when with low temperature glass solder, adding hot edge seal, finally heating vacuumizes and the sealing by fusing Glass tubing of bleeding, because the Glass tubing of bleeding protrudes from glass surface, so also need the bleeding point position is protected; (2) be not need prefabricated bleeding point above glass, but be placed in vacuum furnace after the glass that limit section scribbles low temperature glass solder is closed to sheet, add hot edge seal and directly form vacuum layer under vacuum.The shortcoming of first kind of way is that evacuation process is complicated, production efficiency is very low: because pump-line is very thin, vacuum layer is very thin, the resistance of bleeding is large, speed is little, and needs monolithic to extract, so production efficiency is very low; The second way can solve the shortcoming that first kind of way exists, but because low temperature glass solder is to be made by many oxide, under high temperature, vacuum, in volatile substances in the air of scolder absorption and moisture, scolder, the gas that scolder dissolves in process of production and scolder, the decomposition of partial oxide etc. all can cause a large amount of bubble of generation in scolder, the properties that has greatly weakened scolder is resistance to air loss especially, causes the feasibility of this kind of mode to be greatly affected.Also having a kind of mode is between above two kinds of modes, at prefabricated bleeding point on glass, then after the high temperature edge sealing, vacuumize again, finally utilize scolder by seal weldings such as sheet metals on bleeding point; The shortcoming of this mode is if adopt glass solder run into the difficulty identical with the second way, if adopt the brazing metal soldering how to make small and light sheet metal realize that the resistance to air loss welding will run into very large difficulty under vacuum condition, its economic benefit not necessarily is better than first kind of way.
Summary of the invention
Technical problem to be solved by this invention is to be the defect existed for existing vacuum glass pumping hole, structure of a kind of novel two vacuum layer bleeding points and preparation method thereof is provided, the making method technique of this vacuum glass pumping hole is simple, the vacuum glass of made comprises that toughened vacuum glass can overcome deficiency of the prior art, can effectively guarantee the work-ing life of the resistance to air loss of vacuum glass and heat insulation performance, prolongation vacuum glass, and can improve vacuum glass production efficiency, reduce production costs.
In order to solve the problems of the technologies described above, the invention provides the structure of a kind of pair of vacuum layer bleeding point, it is characterized in that: on the upper glass of vacuum glass and intermediate glass, two bleeding points are made in punching respectively, respectively above two bleeding points or inner preparation one sealing groove, on described two sealing grooves, a sealing cover is arranged respectively, the limit section of described sealing cover inserts in described sealing groove, between described sealing cover and described sealing groove, is bleed-off passage; After upper lower-glass and intermediate glass edge sealing, brazing metal is put into respectively on two described sealing grooves or sealing cover, described bleeding point is vacuumized, also heats and make described brazing metal be fused into liquid, described liquid retention is in described sealing groove, the limit section of described sealing cover also is submerged in described liquid, utilize the hydraulic seal principle by described bleeding point self-sealing, after cooling, described liquid solidifies, and realizes the airtight sealing to described bleeding point.
Wherein, described sealing groove can be the annular recesses of arbitrary shape.
Further, described sealing groove is that the cross section concentric with described bleeding point is V-type or U-shaped annular recesses.
Wherein, described sealing groove adopts directly preparation or indirectly is prepared from, and when directly prepared by described sealing groove, is that upper surface, the bleeding point at upper glass and intermediate glass made respectively an annular recesses on every side; When indirectly prepared by described sealing groove, be to utilize metal tube or Glass tubing to insert respectively in the bleeding point of upper glass and intermediate glass, between metal tube or Glass tubing and bleeding point, form sealing groove.
Further, when indirectly prepared by described sealing groove, the bottom of metal tube or Glass tubing closely cooperates or welds together with upper glass and intermediate glass respectively.
Wherein, the internal surface of described sealing groove preferably scribbles metal paste or electric slurry, when glass tempering or edge sealing on the internal surface of sintering at described sealing groove.
Wherein, the diameter of described sealing groove and sealing cover and highly preferably consider bleed-off passage and scolder sealed vol and determining.
Further, the top of described sealing cover is not higher than the upper surface of described upper glass.
Wherein, described sealing cover is preferably made by glass or metal, when described sealing cover is glass preferably by the metal paste sintering in the section of the limit of described sealing cover.
Further, described metal paste or electric slurry contribute to the welding between brazing metal and glass, and described metal paste serves as the transition layer between glass and brazing metal;
Further, described metal paste is comprised of metal powder, glass powder, organic resin and solvent etc., and described metal paste can adopt commercially available prod.
Wherein, described brazing metal comprises low-temperature metal scolder and solder, and described material is existing commercial commodity.
Further, the fusing point of described brazing metal is lower than the use temperature of fusing point or the binding agent of glass solder, and during the brazing metal fusing, glass solder or the binding agent of edge sealing remain unchanged.
Further, described brazing metal is shaped as powdery, strip, sheet or bulk, ring-type, tubulose etc.
Wherein, the height of described liquid is preferably close with the height of described sealing groove inner side edge.
Wherein, described vacuumizing and the bleeding point sealing can be carried out in batches in vacuum furnace, also can implement by monolithic; Can wholely heat glass, also can the local heating bleeding point.
Wherein, described heating, can adopt conventional heating, Infrared Heating, also can adopt induction heating, LASER HEATING, can also adopt microwave heating and other suitable heating unit or heater means.
Further, described heating, can heat bulk glass, also can the local heating bleeding point.
Wherein, described bleeding point, after brazing metal sealing, then is used sealant sealing, above seal gum, is trade mark or the metal finishing sheet of product, and seal gum can be protected brazing metal, can realize two seals to bleeding point again.
Further, described seal gum preferably has secret sealing, more preferably hot melt adhesive, hot-setting adhesive or two component sealing gum.
In order to solve the problems of the technologies described above, the invention provides the making method of the structure of above-mentioned two vacuum layer bleeding points, it comprises:
The first step, according to the size of required making bleeding point, on upper glass and lower-glass, bleeding point is made in boring respectively, and wherein the bleeding point of upper glass is greater than the bleeding point of lower-glass;
Second step, adopt the mode of directly preparation or preparation indirectly to make sealing groove respectively at two bleeding point places, according to the size of sealing groove, make respectively a sealing cover, and the limit section of sealing cover can insert respectively in sealing groove;
The 3rd step, after upper and lower glass and intermediate glass edge sealing, be respectively charged into brazing metal in two sealing grooves or be placed on sealing cover, and sending in vacuum furnace;
The 4th step, to described heating under vacuum sole vacuumize, limit heating, be evacuated to 0.1Pa following, be warming up to the temperature of fusion of brazing metal more than, brazing metal is fused into liquid, liquid retention is in sealing groove, and the limit section of sealing cover also is submerged in liquid, and liquid is by the bleeding point self-sealing; Stop heating, with stove cooling, brazing metal solidifies realizes airtight sealing afterwards to bleeding point, opens vacuum furnace, takes out vacuum glass;
The 5th step is put into seal gum in bleeding point, Paste Product trade mark or metal finishing sheet on seal gum.
Wherein, described sealing groove can be the annular recesses of arbitrary shape.
Further, described sealing groove is that the cross section concentric with described bleeding point is V-type or U-shaped annular recesses.
Wherein, described sealing groove adopts directly preparation or indirectly is prepared from, when directly prepared by described sealing groove, to make an annular recesses around upper surface at upper glass and intermediate glass, bleeding point, when indirectly prepared by described sealing groove, be to utilize metal tube or Glass tubing to insert in the bleeding point of upper glass and intermediate glass, between metal tube or Glass tubing and bleeding point, form sealing groove.
Further, when indirectly prepared by described sealing groove, the bottom of metal tube or Glass tubing closely cooperates or welds together with upper glass and intermediate glass respectively.
Wherein, the internal surface of described sealing groove preferably scribbles metal paste or electric slurry, when glass tempering or edge sealing on the internal surface of sintering at described sealing groove.
Wherein, the diameter of described sealing groove and sealing cover and highly preferably consider bleed-off passage and scolder sealed vol and determining.
Further, the top of described sealing cover is not higher than the upper surface of described upper glass.
Wherein, described sealing cover is preferably made by glass or metal, when described sealing cover is glass preferably by the metal paste sintering in the section of the limit of described sealing cover.
Further, described metal paste or electric slurry contribute to the welding between brazing metal and glass, and described metal paste serves as the transition layer between glass and brazing metal;
Further, described metal paste is comprised of metal powder, glass powder, organic resin and solvent etc., and described metal paste can adopt commercially available prod.
Wherein, described brazing metal comprises low-temperature metal scolder and solder, and described material is existing commercial commodity.
Further, the fusing point of described brazing metal is lower than the use temperature of fusing point or the binding agent of glass solder, and during the brazing metal fusing, glass solder or the binding agent of edge sealing remain unchanged.
Further, described brazing metal is shaped as powdery, strip, sheet or bulk, ring-type, tubulose etc.
Wherein, the height of described liquid is preferably close with the height of described sealing groove inner side edge.
Wherein, described vacuumizing and the bleeding point sealing can be carried out in batches in vacuum furnace, also can implement by monolithic; Can wholely heat glass, also can the local heating bleeding point.
Wherein, described heating, can adopt conventional heating, Infrared Heating, also can adopt induction heating, LASER HEATING, can also adopt microwave heating and other suitable heating unit or heater means.
Further, described heating, can heat bulk glass, also can the local heating bleeding point.
Wherein, described seal gum preferably has secret sealing, more preferably hot melt adhesive, hot-setting adhesive or two component sealing gum.
Beneficial effect of the present invention:
Vacuum glass pumping hole of the present invention, with reference to " water seal " structure of water sealed tank or the bell-jar floor drain of pot for pickling, according to the hydraulic seal principle, utilize under high temperature the metal that is fused into liquid to realize the self-sealing to bleeding point, vacuum glass pumping hole of the present invention is simple in structure, it is reliable, convenient for production, with low cost to seal, directly sealing in vacuum oven, avoided the existing possibility of Glass tubing in melting moment air inlet of bleeding, and can improve the exhaust temperature of glass, glass absorption and dissolved gases are thoroughly got rid of, under vacuum condition, chemical transformation can not occur in brazing metal, solidify rear resistance to air loss good, can effectively guarantee the vacuum tightness of vacuum glass vacuum layer, with existing vacuum glass pumping hole, compare, its size of bleeding point of the present invention can be very large, its bleed-off passage sectional area is tens times to tens times of the existing Glass tubing of bleeding, the resistance of bleeding, inside and outside differential pressure is less, pumping speed, the vacuum tightness of vacuum layer is higher, thereby be conducive to improve the heat insulation of vacuum glass, sound-proofing properties, extend its work-ing life, self-sealing in vacuum oven, can mass production, can greatly improve vacuum glass production efficiency and qualification rate, reduce production costs, the fusing point of brazing metal is easy to select, and can carry out the integral body heating and guarantee that toughened glass is unannealed toughened glass, realizes mass making toughened vacuum glass.
The accompanying drawing explanation
Fig. 1 is the structural texture schematic diagram that directly prepares two vacuum layer bleeding points of sealing groove of the present invention;
Fig. 2 is the structural texture schematic diagram that indirectly prepares two vacuum layer bleeding points of sealing groove of the present invention.
In figure: 1. upper glass, 2. lower-glass, 3. brazing metal, 4. sealing groove, 5. sealing cover, 6. seal gum, 7. trade mark or tinsel, 8. intermediate glass.
Embodiment
Below adopt embodiment and accompanying drawing to describe embodiments of the present invention in detail, to the present invention, how the utilisation technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
Embodiment 1: referring to Fig. 1, vacuum glass is comprised of upper glass 1, lower-glass 2 and intermediate glass 8, bores respectively a through hole and form bleeding point on upper glass 1 and intermediate glass 8, and wherein the through hole on upper glass 1 is greater than the through hole on intermediate glass 8; On the upper surface of upper glass 1 and intermediate glass 8, utilize hollow drill to make respectively a U-shaped sealing groove 4 concentric with bleeding point, the inner side edge of sealing groove 4 is lower than the upper surface of upper glass 1 and intermediate glass 8; Make respectively a sealing cover 5 according to the size of sealing groove 4, the limit section of sealing cover 5 can insert respectively in sealing groove 4, and the height of sealing cover 5, lower than the upper surface of upper glass 1, is bleed-off passage between sealing cover 5 and sealing groove 4; Internal surface paint metals slurry by sealing groove 4, then send in annealing furnace and make lower-glass and intermediate glass 8 tempering, or directly utilize the low temperature glass solder upper lower-glass after involution piece and intermediate glass 8 in the constant-pressure and high-temperature stove to carry out edge sealing, glass after edge sealing is from High Temperature Furnaces Heating Apparatus takes out, while hot brazing metal 3 is put into respectively to sealing groove 4 as tin alloy or is placed on sealing cover 5, send in vacuum furnace with being about to glass, can once send into multiple pieces of glass; To the heating under vacuum sole vacuumize, limit heating, be evacuated to below 0.1Pa, be warming up to the temperature of fusion of brazing metal 3 tin alloys as more than 300 ℃, brazing metal 3 tin alloys are fused into liquid retention in sealing groove 4, the limit section of sealing cover 5 also is submerged in liquid, and liquid is by the bleeding point self-sealing; Stop heating, lower the temperature with stove, brazing metal 3 tin alloys condense into solid, and bleeding point is realized to airtight sealing, open vacuum furnace, take out vacuum glass.
Embodiment 2: referring to Fig. 2, vacuum glass is comprised of upper glass 1, lower-glass 2 and intermediate glass 8, bore respectively a V-type through hole and form bleeding point on upper glass 1 and on intermediate glass 8, producing respectively a pipe with lower edge inserts in bleeding point, the top of pipe is lower than the upper surface of upper glass 1 and intermediate glass 8, pipe closely cooperates with the end opening of bleeding point respectively, form respectively a sealing groove 4 between the top of pipe and bleeding point, the bottom placing glass scolder of sealing groove 4, when edge sealing, pipe is welded together with upper glass 1 and intermediate glass 8 respectively; According to the size of sealing groove 4, make respectively a sealing cover 5, the limit section of sealing cover 5 can insert in sealing groove 4, and the height of sealing cover 5, lower than the upper surface of upper glass 1, is bleed-off passage between sealing cover 5 and sealing groove 4; Utilize the low temperature glass solder upper lower-glass after involution piece and intermediate glass 8 in the constant-pressure and high-temperature stove to carry out edge sealing, glass after edge sealing takes out from High Temperature Furnaces Heating Apparatus, while hot brazing metal 3 is put into respectively to sealing groove or is placed on sealing cover as magnesium alloy, send in vacuum furnace with being about to glass, can once send into multiple pieces of glass; To the heating under vacuum sole vacuumize, limit heating, be evacuated to below 0.1Pa, be warming up to the temperature of fusion of brazing metal 3 magnesium alloy as more than 350 ℃, brazing metal 3 magnesium alloy are fused into liquid retention in sealing groove 4, the limit section of sealing cover 5 also is submerged in liquid, and liquid is by the bleeding point self-sealing; Stop heating, lower the temperature with stove, brazing metal 3 condenses into solid, and bleeding point is realized to airtight sealing, opens vacuum furnace, takes out vacuum glass.Put into while hot seal gum 6 as butyl rubber in bleeding point, the top covering product brand 7 of seal gum 6, the upper surface flush of trade mark 7 and upper glass 1.
All above-mentioned these intellecture properties of primary enforcement, do 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, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of 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 technical solution of the present invention content that do not break away from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (10)
1. the structure of two vacuum layer bleeding points, it is characterized in that: on the upper glass of vacuum glass and intermediate glass, two bleeding points are made in punching respectively, respectively above two bleeding points or inner preparation one sealing groove, on described two sealing grooves, a sealing cover is arranged respectively, the limit section of described sealing cover inserts in described sealing groove, between described sealing cover and described sealing groove, is bleed-off passage; After upper lower-glass and intermediate glass edge sealing, brazing metal is put into respectively on two described sealing grooves or sealing cover, described bleeding point is vacuumized, also heats and make described brazing metal be fused into liquid, described liquid retention is in described sealing groove, the limit section of described sealing cover also is submerged in described liquid, utilize the hydraulic seal principle by described bleeding point self-sealing, after cooling, described liquid solidifies, and realizes the airtight sealing to described bleeding point.
2. the structure of as claimed in claim 1 pair of vacuum layer bleeding point, it is characterized in that: described sealing groove is that the cross section concentric with described bleeding point is V-type or U-shaped annular recesses.
3. the structure of as claimed in claim 1 pair of vacuum layer bleeding point, it is characterized in that: described sealing groove adopts directly preparation or indirectly is prepared from, when directly prepared by described sealing groove, be that upper surface, the bleeding point at upper glass and intermediate glass made respectively an annular recesses on every side; When indirectly prepared by described sealing groove, be to utilize metal tube or Glass tubing to insert respectively in the bleeding point of upper glass and intermediate glass, between metal tube or Glass tubing and bleeding point, form sealing groove.
4. the structure of as claimed in claim 3 pair of vacuum layer bleeding point, it is characterized in that: when indirectly prepared by described sealing groove, the bottom of described metal tube or Glass tubing closely cooperates or welds together with upper glass and intermediate glass respectively.
5. the structure of as claimed in claim 1 pair of vacuum layer bleeding point, it is characterized in that: the internal surface of described sealing groove scribbles metal paste.
6. the structure of as claimed in claim 1 pair of vacuum layer bleeding point, it is characterized in that: described sealing cover is made by glass or metal, when described sealing cover is glass preferably by the metal paste sintering in the section of the limit of described sealing cover.
7. the structure of as claimed in claim 1 pair of vacuum layer bleeding point, it is characterized in that: described brazing metal comprises low-temperature metal scolder and solder.
8. the structure of as claimed in claim 1 pair of vacuum layer bleeding point is characterized in that: described to vacuumize with bleeding point sealing be to utilize process furnace whole heating glass or local heating bleeding point, carry out in batches or monolithic is implemented.
9. the structure of as described as claim 1 to 8 any one pair of vacuum layer bleeding point is characterized in that: described bleeding point, after the brazing metal sealing, then is used sealant sealing, above seal gum, is trade mark or the metal finishing sheet of product.
10. the making method of the structure of described pair of vacuum layer bleeding point of claim 1 to 9 any one, is characterized in that, comprising:
The first step, according to the size of required making bleeding point, on upper glass and lower-glass, bleeding point is made in boring respectively, and wherein the bleeding point of upper glass is greater than the bleeding point of lower-glass;
Second step, adopt the mode of directly preparation or preparation indirectly to make sealing groove respectively at two bleeding point places, according to the size of sealing groove, make respectively a sealing cover, and the limit section of sealing cover can insert respectively in sealing groove;
The 3rd step, after upper and lower glass and intermediate glass edge sealing, be respectively charged into brazing metal in two sealing grooves or be placed on sealing cover, and sending in vacuum furnace;
The 4th step, to described heating under vacuum sole vacuumize, limit heating, be evacuated to 0.1Pa following, be warming up to the temperature of fusion of brazing metal more than, brazing metal is fused into liquid, liquid retention is in sealing groove, and the limit section of sealing cover also is submerged in liquid, and liquid is by the bleeding point self-sealing; Stop heating, with stove cooling, brazing metal solidifies realizes airtight sealing afterwards to bleeding point, opens vacuum furnace, takes out vacuum glass;
The 5th step is put into seal gum in bleeding point, Paste Product trade mark or metal finishing sheet on seal gum.
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| US20030110865A1 (en) * | 1997-02-20 | 2003-06-19 | Staffan Johsson | Method of producing an integrated reference pressure sensor element |
| CN101597133A (en) * | 2008-06-05 | 2009-12-09 | 左树森 | The package design of extraction opening of multi-layer vacuum glass |
| CN102079620A (en) * | 2009-11-27 | 2011-06-01 | 洛阳兰迪玻璃机器有限公司 | Closing method, closing structure and closing device for vacuum glass pumping hole |
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2013
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030110865A1 (en) * | 1997-02-20 | 2003-06-19 | Staffan Johsson | Method of producing an integrated reference pressure sensor element |
| CN2544073Y (en) * | 2002-09-05 | 2003-04-09 | 京东方科技集团股份有限公司 | Air discharge hole closure device for high thermal-insulation sound-insulation glass |
| CN101597133A (en) * | 2008-06-05 | 2009-12-09 | 左树森 | The package design of extraction opening of multi-layer vacuum glass |
| CN102079620A (en) * | 2009-11-27 | 2011-06-01 | 洛阳兰迪玻璃机器有限公司 | Closing method, closing structure and closing device for vacuum glass pumping hole |
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Denomination of invention: Construction and Manufacturing Method of Double Vacuum Layer Air Extraction Port Effective date of registration: 20230803 Granted publication date: 20160810 Pledgee: Cangzhou Bank Co.,Ltd. Hengshui Anping Sub branch Pledgor: ANPING JINLONG VEHICLE EQUIPMENT Co.,Ltd. Registration number: Y2023980050863 |
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