CN102953439B - Convex vacuum thermal insulation plate and preparation method thereof - Google Patents
Convex vacuum thermal insulation plate and preparation method thereof Download PDFInfo
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- CN102953439B CN102953439B CN201210075606.2A CN201210075606A CN102953439B CN 102953439 B CN102953439 B CN 102953439B CN 201210075606 A CN201210075606 A CN 201210075606A CN 102953439 B CN102953439 B CN 102953439B
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/242—Slab shaped vacuum insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
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- Joining Of Glass To Other Materials (AREA)
Abstract
The present invention provides a vacuum insulation panel, comprising: the heat insulation plate comprises an upper heat insulation plate and a lower heat insulation plate, wherein the peripheries of the upper heat insulation plate and the lower heat insulation plate are welded together through welding fluxes, a closed vacuum layer is formed between the upper heat insulation plate and the lower heat insulation plate, the upper heat insulation plate and the lower heat insulation plate are convex heat insulation plates, and the convex surfaces of the convex heat insulation plates face towards the outside. The manufacturing method of the vacuum heat insulation plate is simple in process, the manufactured vacuum heat insulation plate overcomes the defects of the existing heat insulation plate, the air tightness of the vacuum layer of the vacuum heat insulation plate can be effectively guaranteed, the service life of the vacuum heat insulation plate is prolonged, the strength, the heat insulation, sound insulation and fire resistance can be improved, and meanwhile, the vacuum heat insulation plate has a good decoration effect.
Description
Technical field
The present invention relates to energy-saving building technology field, particularly relate to a kind of vacuum insulation panel and preparation method thereof.
Background technology
Current domestic construction exterior-wall heat insulation material used is mainly B level heat insulating material, as organic materials such as polystyrene, polyurethane, bipeltates, these organic material heat resistances are poor, easy firing, not only discharge a large amount of heats during burning, produce a large amount of poison gas, and large fire spread can be accelerated; Simultaneously, molten contracting can be there is in organic material when fire, produce density flaming droplet, on initiation insulation layer, institute's tile fixing comes off, cause spot fire and secondary injury possibly, so national relative section prohibites exterior-wall heat insulation use organic insulation material, particularly at highrise building and public building.Reach in the heat insulating material of A grade standard in combustibility, mainly with the inorganic material that mineral wool and rock wool are representative, but existing home made article requires very large gap with Application in Building in water absorption rate, intensity, weatherability etc., be directly used in construction wall insulation, problems such as water suction will being occurred, drop, be softening.In addition, A level heat insulating material cost is far away higher than organic material, and complicated construction technique construction cost is far beyond the expense of B level heat insulating material, and its poor thermal insulation property and energy consumption is high, the needs of national current energy-saving and emission-reduction can not be met.
Summary of the invention
Technical problem to be solved by this invention is the defect being to exist for existing building insulating board, warming plate, a kind of novel vacuum insulation panel and preparation method thereof is provided, the preparation method technique of this vacuum insulation panel is simple, prepared vacuum insulation panel can overcome the deficiency of existing insulating board and warming plate, effectively can ensure the tightness of vacuum insulation panel, increase the service life, and its intensity and heat insulation, sound insulation, fireproof performance can be increased, also there is good decorative effect simultaneously.
In order to solve the problems of the technologies described above, the invention provides a kind of convex vacuum thermal baffle, it comprises: upper insulating board, lower insulating board, the periphery of described upper insulating board and described lower insulating board is welded together by solder, the vacuum layer that between described upper insulating board and described lower insulating board, formation one is closed, described upper insulating board and described lower insulating board are convex surface insulating boards, convex surface facing outside.
Wherein, described upper and lower insulating board comprises glass plate, ceramic wafer or metal sheet.
Wherein, the inner surface of described upper or lower insulating board is coated with low-radiation film, as aluminium film etc.
Wherein, the convex surface bow of described convex surface insulating board is high is not less than 0.1mm, is preferably 1 ~ 200mm.
Wherein, the periphery of one piece of insulating board is had in described upper and lower insulating board at least at least containing an edge band frame.
Wherein, described edge band frame adopts the preparation of printing cryogenic glass powder or utilizes mould to squeeze and makes.
Wherein, described convex vacuum thermal baffle can also comprise one piece of middle insulating board, described middle insulating board is clipped between described upper insulating board and described lower insulating board, and described upper insulating board and described lower insulating board form two closed vacuum layer respectively with described middle insulating board.
In order to solve the problems of the technologies described above, the invention provides the preparation method of above-mentioned convex vacuum thermal baffle, it comprises:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
When described insulating board is glass plate, make the hot bending die in existing heat-bending glass technology of preparing;
When described insulating board is ceramic wafer, make the diel in existing ceramic wafer technology of preparing or slip casting mould;
When described insulating board is metal sheet, make the diel in existing metal sheet technology of preparing;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and be down to room temperature with stove, obtain convex glass plate;
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry is loaded diel or slip casting mould, prepares the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer, or the outer flat ceramic wafer of indent;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
3rd step, coating solder: the two pieces of insulating boards obtain second step or the solder side periphery even spread solder of one piece of insulating board, solder evenly leaves several aspirating hole, and is stacked together by described two pieces of insulating board consistencies from top to bottom, sends in vacuum edge sealing stove;
4th step, high temperature edge sealing: described vacuum edge sealing sole is vacuumized, limit heating, be evacuated to below 0.1Pa, be warming up to more than the melt temperature of solder, reach edge sealing temperature, aspirating hole disappears, stop heating, with stove cooling, two pieces of insulating boards hermetic weld together by solder, and the fire door opening vacuum edge sealing stove obtains required convex vacuum thermal baffle.
In order to solve the problems of the technologies described above, the invention provides the preparation method of above-mentioned convex vacuum thermal baffle, when being convex surface armorplate glass when having one piece in described convex vacuum thermal baffle at least, preparation method is as follows:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
When described insulating board is glass plate, make the hot bending die in existing heat-bending glass technology of preparing;
When described insulating board is ceramic wafer, make the diel in existing ceramic wafer technology of preparing or slip casting mould;
When described insulating board is metal sheet, make the diel in existing metal sheet technology of preparing;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and carry out wind-cooling reinforcing immediately, obtain convex surface armorplate glass;
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry is loaded diel or slip casting mould, prepares the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer, or the outer flat ceramic wafer of indent;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
3rd step, coating solder: the two pieces of insulating boards obtain second step or the solder side periphery even spread solder of one piece of insulating board, solder evenly leaves several aspirating hole, and is stacked together by described two pieces of insulating board consistencies from top to bottom, sends in vacuum edge sealing stove; Described vacuum edge sealing stove and accessory has basic heating system and hot spot system, basis heating system can adopt the mode of resistance heated as heating wire, electrothermal tube, electric hot plate etc., and hot spot system can adopt the mode such as resistance heated, infrared heating, LASER HEATING, Electromagnetic Heating, heating using microwave;
4th step, high temperature edge sealing: described vacuum edge sealing sole is vacuumized, limit is heated, be evacuated to below 0.1Pa, first adopt basic heating system by described vacuum edge sealing furnace interior and on, lower insulating board entirety is heated to a basal temperature, adopt hot spot system to upper again, lower insulating board peripheral position carries out spot heating, reach the object at short notice solder being heated to melting, thus reach edge sealing temperature, aspirating hole disappears, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by solder, the fire door opening vacuum edge sealing stove obtains required convex vacuum thermal baffle.
The invention has the beneficial effects as follows:
The upper and lower insulating board of vacuum insulation panel of the present invention is convex surface insulating board, because insulating board itself has very high compressive strength, so rely on the shape of convex surface insulating board to resist atmospheric pressure, can not put or put supporter less, not only simplify the manufacture craft of vacuum insulation panel, reduce cost of production, make the production of vacuum insulation panel more easy, and the intensity of vacuum insulation panel and heat insulation, sound insulation value can be improved.On vacuum insulation panel, the periphery of lower insulating board contains edge band frame, make the edge sealing of vacuum insulation panel easier, the mutually chimeric of upper and lower edge band frame ensure that the sealing effectiveness of insulating board under deformation, there is between edge band frame and upper and lower insulating board the bond strength higher than low-temperature welding insulating board, increase sealing area and airtight layer thickness between upper and lower insulating board, greatly strengthen adhesive power and the adhesive strength of sealing-in, add, the tightness of vacuum layer between lower insulating board, improve the life-span of vacuum insulation panel, achieve one-step method and prepare vacuum insulation panel, thus the suitability for industrialized production of vacuum insulation panel can be promoted, greatly improve productivity ratio and the qualification rate of vacuum insulation panel, reduce the cost of production of vacuum insulation panel.
Accompanying drawing explanation
Fig. 1 is vacuum insulation panel structural representation of the present invention;
Fig. 2 is the vacuum insulation panel structural representation that lower insulating board of the present invention has edge band frame;
Fig. 3 is the vacuum insulation panel structural representation that upper and lower insulating board of the present invention all has edge band frame;
Fig. 4 is upper and lower insulating board of the present invention is the outer dull and stereotyped vacuum insulation panel structural representation of indent;
Fig. 5 is the vacuum insulation panel structural representation having supporter of the present invention;
Fig. 6 is the vacuum insulation panel structural representation having dual-gripper thing of the present invention;
Fig. 7 is the vacuum insulation panel structural representation of of the present invention pair of vacuum layer;
Fig. 8 is the vacuum insulation panel structural representation that upper and lower insulating board of the present invention all has two vacuum layer of edge band frame.
In figure: 1. go up insulating board, 2. descend insulating board, 3. solder, 4. descend the edge band frame on insulating board, 5. go up the edge band frame of insulating board, 6. descend the supporter on insulating board, 7. go up the supporter on insulating board, 8. middle insulating board.
Detailed description of the invention
The invention provides a kind of convex vacuum thermal baffle, it comprises: upper insulating board, lower insulating board, the periphery of described upper insulating board and described lower insulating board is welded together by solder, the vacuum layer that between described upper insulating board and described lower insulating board, formation one is closed, described upper insulating board and described lower insulating board are convex surface insulating boards, the bow of described convex surface insulating board is high is not less than 0.1mm, convex surface facing outside.
Described convex vacuum thermal baffle can also comprise one piece of middle insulating board, described middle insulating board is clipped between described upper insulating board and described lower insulating board, and described upper insulating board and described lower insulating board form two closed vacuum layer respectively with described middle insulating board.
Described convex vacuum thermal baffle may further include insulating board in the middle of polylith, thus comprises multiple closed vacuum layer.
Upper insulating board and the lower insulating board of convex vacuum thermal baffle utilize the convex shape of insulating board to resist atmospheric pressure, the vacuum layer two pieces of insulating boards can not be pressed together, keeping between two insulating boards, eliminate making and the very large supporter of installation difficulty; Without the conduction of supporter, the heat insulation and sound insulation value of vacuum insulation panel is better; Convex configuration, makes insulating board have higher compressive strength and flexural strength; Convex configuration, makes vacuum layer have larger space, and the life-span of vacuum state, vacuum insulation panel more can be kept for a long time longer, even if lose vacuum, its performance is also better than general hollow heat insulation plate.
Described upper and lower insulating board comprises glass plate, ceramic wafer or metal sheet.
The inner surface of described upper or lower insulating board is coated with low-radiation film, as aluminium film etc.
The convex surface bow of upper and lower two pieces of convex surface insulating boards of described vacuum insulation panel is high is preferably 1 ~ 200mm, more preferably 1 ~ 20mm.
It is high that described upper and lower insulating board can have identical bow, also can according to construction to require different bows high.
Described insulating board comprises glass plate, ceramic wafer and metal sheet, can adopt following preparation method respectively:
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and be down to room temperature with stove, obtain convex glass plate; If obtain toughened glass heat-insulation plate, then two blocks of sheet glass after process are respectively charged into moulding form, put into bending furnace, be warming up to the softening temperature 550 DEG C ~ 750 DEG C of glass, the gravity of glass self is relied on to make glass plate form convex surface downwards, carry out wind-cooling reinforcing subsequently, namely obtain that shape is convex surface, material is the insulating board of tempered glass.
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry are loaded diel or slip casting mould, prepare the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer, or the outer flat ceramic wafer of indent, or directly with the ceramic wafer of edge band frame or supporter;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
The convex surface of described convex vacuum thermal baffle bends the high shape by insulating board and size and purposes and determines, under the prerequisite of satisfied opposing atmospheric pressure and purposes, bow is high as small as possible, be advisable with 3 ~ 9mm for during common building insulating board, namely the space of 6 ~ 18mm is had between two pieces of insulating boards, be equivalent to existing hollow glass, under atmospheric pressure almost plane is best, to obtain good visual effect and the cost reducing described vacuum insulation panel and the space taken.
Described solder comprises commercially available high temp glass or ceramic glaze, low temperature glass solder and low-melting-point metal or solder, described high temp glass or the preferred melt temperature of ceramic glaze are the ceramic glaze of about 1100-1300 DEG C, the preferred melt temperature of described solder is the crown glass solder of about 450-750 DEG C, described low-melting-point metal or the preferred tin of solder or ashbury metal, zinc or kirsite, magnesium or magnesium alloy, aluminum or aluminum alloy etc.
Described solder is at least coated on the solder side periphery of a piece of upper and lower insulating board or the solder side periphery of two pieces and described middle insulating board.
Described solder directly contacts with upper and lower insulating board, or contacts with upper and lower insulating board and the middle insulating board be clipped between upper and lower insulating board.
The formation of described single vacuum layer convex vacuum thermal baffle can adopt one-step method to be formed, and described one-step method comprises the steps:
By the solder side periphery even spread solder of in upper and lower insulating board piece or two pieces, solder evenly leaves several pass through solder band groove or slit as aspirating hole; Upper and lower insulating board consistency from top to bottom is stacked together, sends in vacuum edge sealing stove; To vacuum edge sealing stove evacuation to below 0.1Pa, heating makes in-furnace temperature rise to more than the melt temperature of solder, reaches edge sealing temperature, and aspirating hole disappears; Stop heating, reduce furnace temperature to room temperature, described solder welds together bubble-tight for upper and lower insulating board, thus the convex vacuum thermal baffle required for obtaining.
The one-step method forming step of described two vacuum layer convex vacuum thermal baffle is as follows:
By the periphery even spread solder of upper convex surface insulating board, lower convex surface insulating board and middle insulating board solder side, solder evenly leaves several pass through solder band groove or slit as aspirating hole, and three pieces of insulating board consistencies from top to bottom are stacked together, send in vacuum edge sealing stove; To vacuum edge sealing stove evacuation to below 0.1Pa, heating makes in-furnace temperature rise to more than the melt temperature of solder, reaches edge sealing temperature, aspirating hole disappears, stop heating, with stove cooling, two pieces of insulating boards hermetic weld together by solder, open fire door and obtain required convex vacuum thermal baffle.
Described vacuum edge sealing stove or the single-unit furnace of batch production, or the tunnel kiln that continous way is produced, preferred tunnel kiln.
When prepare be insulating board containing tempered glass time, preferentially select low-melting-point metal or solder, to select lower edge sealing temperature.
When prepare be containing toughened glass heat-insulation plate time, the problem of annealing because welding temperature is too high, vacuum edge sealing stove can have basic heating system and hot spot system, basis heating system can adopt the mode of resistance heated as heating wire, electrothermal tube, electric hot plate etc., vacuum edge sealing furnace interior and insulating board is heated to a basal temperature and is preferably 280 ~ 320 DEG C; The modes such as recycling resistance heated, infrared heating, LASER HEATING, Electromagnetic Heating, heating using microwave carry out spot heating to the periphery of insulating board and edge sealing position, reach the object at short notice solder being heated to melting.
Adopt the mode of automatic edge sealing in vacuum edge sealing stove, simplify activities, reduce cost of production, shorten the production cycle, improve production efficiency.
Because tempering and semi-tempered glass insulating board have higher intensity than simple glass insulating board, so under identical shape and size, the convex surface bow of tempering or half tempered convex surface insulating board is high can be less, and tempering or half tempered convex surface insulating board can be more flat.Due to utilize there is upper and lower mould moulding form, insulating board is clipped in rely between upper and lower mould and applies pressure forming, so convex surface insulating board has more regular shape, and prevent the distortion in toughening process, so edge sealing is simpler, sealing performance and intensity are also higher.Because vacuum edge sealing stove and accessory has basic heating system and hot spot system, the temperature at insulating board edge can be made to be rapidly heated to welding temperature, and tempering or semi-tempered glass insulating board are under lower basal temperature, in the long period and higher local temperature, obvious annealing phenomena can not occur, so can ensure to obtain tempering or semi-tempered glass insulating board in the shorter time.
In described vacuum layer, when the planar dimension of upper and lower insulating board is less or high comparatively large, the convex shape that can rely on insulating board self of convex surface bow and intensity opposing atmospheric pressure time, can not supporter be established; When upper and lower insulating board can not rely on self convex shape and intensity opposing atmospheric pressure, should arrange a small amount of necessary supporter, supporter and insulating board cooperatively resist atmospheric pressure.
Without the conduction of supporter, the heat insulation and sound insulation value of convex vacuum thermal baffle is better.
Above support is made up of metal, pottery or glass, or utilizes mould to make; Preferred employing printing cryogenic glass powder or solder are prepared or utilize mould to make.
Above support minimum unit can be the lattice arrangement of equilateral triangle, and the leg-of-mutton length of side is about 30 ~ 300mm, is preferably 50 ~ 150mm; Supporter is strip, its length is 0.3 ~ 5.0mm, is preferably 0.5 ~ 2.0mm, width is 0.1 ~ 2.0mm, is preferably 0.2 ~ 1.0mm, be highly 0.1 ~ 10.0mm, be preferably 0.5 ~ 3.0mm, the height of supporter is higher than the height 0.1 ~ 2.0mm of edge band frame, preferably 0.1 ~ 0.5mm; Supporter also can be cylindric, its diameter is 0.1 ~ 3.0mm, is preferably 0.3 ~ 2.0mm, be highly 0.1 ~ 5.0mm, be preferably 0.5 ~ 3.0mm, the height of supporter closes sheet rear support thing position spatial altitude 0 ~ 0.3mm higher than upper and lower two pieces of insulating boards, is preferably 0.1 ~ 0.2mm.
When supporter is printed on one piece of insulating board, preferably cylindric; When supporter is printed on upper and lower two pieces of insulating boards simultaneously, be preferably strip.
When supporter is printed before glass plate tempering, preferred cryogenic glass powder is made; When supporter is printed after glass plate tempering, preferred low temperature glass solder is made.
When upper and lower insulating board all has a strip supporter, supporter vertical pile supports, upper and lower insulating board is still point cantact by supporter, and between supporter and insulating board, be linear contact lay, increase contact area, reduce the tensile stress of insulating board in support place, so the quantity of supporter can be reduced, thus improve the heat insulation and sound insulation value of insulating board further.
The shape and size of described vacuum insulation panel are determined by the purposes of vacuum insulation panel, and under the prerequisite meeting instructions for use, its shape is preferably square or circular.
The periphery of one piece of insulating board is had at least at least containing an edge band frame in described upper and lower insulating board.
The height of described edge band frame is preferably 0.1 ~ 10mm, more preferably 0.1 ~ 1mm, and width is preferably 0.2 ~ 5mm, more preferably 1 ~ 2mm.
Described edge band frame can leave several aspirating hole, namely perpendicular to edge band frame and along the equally distributed groove of edge band frame or slit, quantity is determined by the girth of upper and lower insulating board, and spacing about 50 ~ 150mm is advisable, and can close described aspirating hole after described solder fusing; Also can not stay aspirating hole, the passage that the space utilizing the rough surface of solder of coating to be formed is discharged as gas between insulating board, but leave aspirating hole and can reduce the time vacuumized.
When only containing an edge band frame, described solder is in the outside of described edge band frame, when containing multiple edge band frame, described solder is in the centre of described edge band frame or middle and outside, described edge band frame is when having the upper surface of middle insulating board of convex surface insulating board of two vacuum layer, identical with described lower insulating board, when the soffit of described middle insulating board, identical with described upper insulating board.
When only containing an edge band frame, the periphery of preferred described lower insulating board contains an edge band frame, the periphery edge of edge band frame and described lower insulating board has the space of 5mm ~ 10mm, for being coated with described solder, described edge band frame is when having the upper surface of middle insulating board of convex surface insulating board of two vacuum layer, identical with described lower insulating board, when the soffit of described middle insulating board, identical with described upper insulating board.
When upper insulating board and lower insulating board are respectively containing an edge band frame, the shape of two edge band frames and size or identical or different, be preferably shape identical, vary in size, now, little edge band frame is included in large edge band frame, described edge band frame is when having the upper surface of middle insulating board of convex surface insulating board of two vacuum layer, identical with described lower insulating board, when the soffit of described middle insulating board, identical with described upper insulating board.
Further, more than the edge band frame of described upper insulating board one of the edge band frame of described lower insulating board, namely described upper insulating board is at least containing an edge band frame, described lower insulating board is at least containing two edge band frames, the edge band frame of described upper insulating board is inserted in the middle of the edge band frame of described lower insulating board, the edge band frame of described upper and lower insulating board is entrenched togather mutually, labyrinth sealing is carried out to vacuum layer, described edge band frame is when having the upper surface of middle insulating board of convex surface insulating board of two vacuum layer, identical with described lower insulating board, when the soffit of described middle insulating board, identical with described upper insulating board.
The introducing of edge band frame not only can limit solder and dissolve rear random flowing, makes edge sealing neatly good-looking, and play good supporting role, the thickness making solder keep certain, reinforced seal effect, the more important thing is that its heating-up temperature is high, have bond more reliably with upper and lower insulating board, rough surface, to have with solder and be more firmly combined, thus improve tightness and the reliability of vacuum insulation panel.
Adopt edge band frame, can be easy to utilize low-melting-point metal or alloy to realize the solder bonding metal of vacuum insulation panel, because the selectable scope of brazing temperature is very large, so not only can overall heat insulating plate, reduce heating furnace cost and simplify production technology, and significantly can reduce edge sealing temperature, shortening heat time, thus reduce cost of production, enhance productivity, the more important thing is and ensure that tempering or semi-tempered glass insulating board annealing phenomena can not occur in heating process.
Described edge band frame is made by the mode of squeezing, etching or printing, and described edge band frame comprises fin and groove, preferably adopts the fin that mould squeezing or printing cryogenic glass powder or solder are made.
Described squeezing mode dull and stereotyped insulating board or its raw material is loaded inner surface with in the mold cavity of depression or protruding lines, applies pressure, form fin and groove at the periphery of dull and stereotyped insulating board under high temperature or normal temperature to dull and stereotyped insulating board or its raw material.
Described etching mode is known prior art, utilize method for printing screen acid-proof ink is printed on dull and stereotyped insulating board do not need etch place, erode away groove with corrosive acids such as hydrofluoric acid by dull and stereotyped insulating board there is no acid-proof ink place.
Described mode of printing is the method adopting serigraphy or mould printing or printer, cryogenic glass powder or solder is imprinted on the fin dull and stereotyped insulating board being formed and is raised in dull and stereotyped insulating board surface.
When described edge band frame adopts printing to prepare, can be one-step print, also can be repeatedly print.
After the edge band frame of upper and lower insulating board is chimeric mutually, not only reduce the consumption of edge sealing low temperature glass solder, reduce requirement to edge sealing low temperature glass solder, and increase inner liner thickness, improve the sealing strength of upper and lower insulating board, the more important thing is the buckling deformation that can solve because toughened glass heat-insulation plate produces in toughening process and the sealing problem brought, thus improve the qualification rate of product.
When preparation is toughened glass heat-insulation plate, is the problem of annealing because welding temperature is too high when solving toughened glass heat-insulation plate edge sealing, can adopts low-melting-point metal or solder.
Described low-melting-point metal or solder can be tin or ashbury metal, zinc or kirsite, aluminum or aluminum alloy, magnesium or magnesium alloy etc.
Present invention also offers a kind of convex vacuum thermal baffle, it comprises: upper insulating board, lower insulating board, the periphery of described upper insulating board and described lower insulating board is welded together by solder, the vacuum layer that between described upper insulating board and described lower insulating board, formation one is closed, described upper insulating board and described lower insulating board are convex surface insulating boards, convex surface facing outside;
The described preparation method with the convex vacuum thermal baffle of a closed vacuum layer is as follows:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
When described insulating board is glass plate, make the hot bending die in existing heat-bending glass technology of preparing;
When described insulating board is ceramic wafer, make the diel in existing ceramic wafer technology of preparing or slip casting mould;
When described insulating board is metal sheet, make the diel in existing metal sheet technology of preparing;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and be down to room temperature with stove, obtain convex glass plate;
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry is loaded diel or slip casting mould, prepares the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer, or the outer flat ceramic wafer of indent;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
3rd step, coating solder: the two pieces of insulating boards obtain second step or the solder side periphery even spread solder of one piece of insulating board, solder evenly leaves several aspirating hole, and is stacked together by described two pieces of insulating board consistencies from top to bottom, sends in vacuum edge sealing stove;
4th step, high temperature edge sealing: described vacuum edge sealing sole is vacuumized, limit heating, be evacuated to below 0.1Pa, be warming up to more than the melt temperature of solder, reach edge sealing temperature, aspirating hole disappears, stop heating, with stove cooling, two pieces of insulating boards hermetic weld together by solder, and the fire door opening vacuum edge sealing stove obtains required convex vacuum thermal baffle.
Present invention also offers a kind of convex vacuum thermal baffle, it comprises: upper insulating board, lower insulating board and middle insulating board, described middle insulating board is clipped between described upper insulating board and described lower insulating board, described upper insulating board and described lower insulating board form two closed vacuum layer respectively with described middle insulating board, the periphery of described upper insulating board, described lower insulating board and described middle insulating board is welded together by solder, described upper insulating board and described lower insulating board are convex surface insulating boards, convex surface facing outside;
Described there is the convex vacuum thermal baffle of two closed vacuum layer preparation method and the described preparation method with the convex vacuum thermal baffle of a closed vacuum layer similar.
Present invention also offers a kind of preparation method with the convex vacuum thermal baffle of a vacuum layer, it comprises:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
When described insulating board is glass plate, make the hot bending die in existing heat-bending glass technology of preparing;
When described insulating board is ceramic wafer, make the diel in existing ceramic wafer technology of preparing or slip casting mould;
When described insulating board is metal sheet, make the diel in existing metal sheet technology of preparing;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and be down to room temperature with stove, obtain convex glass plate;
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry is loaded diel or slip casting mould, prepares the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer, or the outer flat ceramic wafer of indent;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
3rd step, coating solder: the two pieces of insulating boards obtain second step or the solder side periphery even spread solder of one piece of insulating board, solder evenly leaves several aspirating hole, and is stacked together by described two pieces of insulating board consistencies from top to bottom, sends in vacuum edge sealing stove;
4th step, high temperature edge sealing: described vacuum edge sealing sole is vacuumized, limit heating, be evacuated to below 0.1Pa, be warming up to more than the melt temperature of solder, reach edge sealing temperature, aspirating hole disappears, stop heating, with stove cooling, two pieces of insulating boards hermetic weld together by solder, and the fire door opening vacuum edge sealing stove obtains required convex vacuum thermal baffle.
Present invention also offers a kind of insulating board at least containing one block of convex surface tempered glass, it comprises: upper insulating board, lower insulating board, the periphery of described upper insulating board and described lower insulating board is welded together by solder, the vacuum layer that between described upper insulating board and described lower insulating board, formation one is closed, described upper insulating board and described lower insulating board are convex surface insulating boards, convex surface facing outside;
The described insulating board preparation method at least containing one block of convex surface tempered glass with a closed vacuum layer is as follows:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
When described insulating board is glass plate, make the hot bending die in existing heat-bending glass technology of preparing;
When described insulating board is ceramic wafer, make the diel in existing ceramic wafer technology of preparing or slip casting mould;
When described insulating board is metal sheet, make the diel in existing metal sheet technology of preparing;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and carry out wind-cooling reinforcing immediately, obtain convex surface armorplate glass;
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry is loaded diel or slip casting mould, prepares the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer, or the outer flat ceramic wafer of indent;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
3rd step, coating solder: the two pieces of insulating boards obtain second step or the solder side periphery even spread solder of one piece of insulating board, solder evenly leaves several aspirating hole, and is stacked together by described two pieces of insulating board consistencies from top to bottom, sends in vacuum edge sealing stove; Described vacuum edge sealing stove and accessory has basic heating system and hot spot system, basis heating system can adopt the mode of resistance heated as heating wire, electrothermal tube, electric hot plate etc., and hot spot system can adopt the mode such as resistance heated, infrared heating, LASER HEATING, Electromagnetic Heating, heating using microwave;
4th step, high temperature edge sealing: described vacuum edge sealing sole is vacuumized, limit is heated, be evacuated to below 0.1Pa, first adopt basic heating system by described vacuum edge sealing furnace interior and on, lower insulating board entirety is heated to a basal temperature, adopt hot spot system to upper again, lower insulating board peripheral position carries out spot heating, reach the object at short notice solder being heated to melting, thus reach edge sealing temperature, aspirating hole disappears, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by solder, the fire door opening vacuum edge sealing stove obtains required convex vacuum thermal baffle.
Described basic heating-up temperature range preferably from 280 ~ 320 DEG C, melt temperature range preferably from 380 ~ 470 DEG C.
Present invention also offers a kind of insulating board at least containing one block of convex surface tempered glass, it comprises: upper insulating board, lower insulating board and middle insulating board, described middle insulating board is clipped between described upper insulating board and described lower insulating board, described upper insulating board and described lower insulating board form two closed vacuum layer respectively with described middle insulating board, the periphery of described upper insulating board, described lower insulating board and described middle insulating board is welded together by solder, described upper insulating board and described lower insulating board are convex surface insulating boards, convex surface facing outside;
The described preparation method with the insulating board at least containing one block of convex surface tempered glass of two closed vacuum layer is similar with the described preparation method at least containing the insulating board of one block of convex surface tempered glass with a closed vacuum layer.
The present invention is also supplied to a kind ofly has at least as follows containing the insulating board preparation method of one block of convex surface tempered glass of a vacuum layer:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
When described insulating board is glass plate, make the hot bending die in existing heat-bending glass technology of preparing;
When described insulating board is ceramic wafer, make the diel in existing ceramic wafer technology of preparing or slip casting mould;
When described insulating board is metal sheet, make the diel in existing metal sheet technology of preparing;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and carry out wind-cooling reinforcing immediately, obtain convex surface armorplate glass;
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry is loaded diel or slip casting mould, prepares the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer, or the outer flat ceramic wafer of indent;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
3rd step, coating solder: the two pieces of insulating boards obtain second step or the solder side periphery even spread solder of one piece of insulating board, solder evenly leaves several aspirating hole, and is stacked together by described two pieces of insulating board consistencies from top to bottom, sends in vacuum edge sealing stove; Described vacuum edge sealing stove and accessory has basic heating system and hot spot system, basis heating system can adopt the mode of resistance heated as heating wire, electrothermal tube, electric hot plate etc., and hot spot system can adopt the mode such as resistance heated, infrared heating, LASER HEATING, Electromagnetic Heating, heating using microwave;
4th step, high temperature edge sealing: described vacuum edge sealing sole is vacuumized, limit is heated, be evacuated to below 0.1Pa, first adopt basic heating system by described vacuum edge sealing furnace interior and on, lower insulating board entirety is heated to a basal temperature, adopt hot spot system to upper again, lower insulating board peripheral position carries out spot heating, reach the object at short notice solder being heated to melting, thus reach edge sealing temperature, aspirating hole disappears, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by solder, the fire door opening vacuum edge sealing stove obtains required convex vacuum thermal baffle.
Described basic heating-up temperature range preferably from 280 ~ 320 DEG C, melt temperature range preferably from 380 ~ 470 DEG C.
Below adopt embodiment and accompanying drawing to describe embodiments of the present invention in detail, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.
Embodiment 1: see Fig. 1, vacuum insulation panel is made up of upper convex glass insulating board 1 and lower convex glass insulating board 2, wherein one block of glass is the low emissivity glass being coated with aluminium film, and the periphery of two pieces of insulating boards is welded together by low temperature glass solder 3, and centre is vacuum layer.Its preparation method is as follows: first according to the shape of made vacuum insulation panel and two blocks of sheet glass of size preparation required size, and carry out edging, chamfering, cleaning, drying; Secondly two pieces of glass plates are loaded mould, are placed in bending furnace, be warming up to the temperature 550-750 DEG C of Glass Transition, rely on the gravity of glass self to make glass plate form convex surface downwards, and be down to room temperature with stove; Again by the periphery even spread low temperature glass solder of two pieces of glass plates or one piece of glass plate, low temperature glass solder evenly leaves several aspirating hole, and two pieces of glass plate consistencies from top to bottom are stacked together, send in vacuum edge sealing stove; Back vacuumizes, limit heating, be evacuated to below 0.1Pa, be warming up to the melt temperature more than 450 DEG C of low temperature glass solder, aspirating hole disappears, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by low temperature glass solder, open fire door and obtain required vacuum insulation panel.
Embodiment 2: see Fig. 1, vacuum insulation panel is made up of upper convex surface ceramic heat-insulation board 1 and lower convex surface ceramic heat-insulation board 2, and the periphery of two pieces of insulating boards is welded together by refractory ceramics glaze 3, and centre is vacuum layer.Its preparation method is as follows: first prepare metal stamping die according to the shape of made vacuum insulation panel and size; Secondly the raw material making ceramic heat-insulation board is loaded in mould, and through press extrusion forming, open the base substrate that mould obtains ceramic heat-insulation board, be placed in drier dry; Again by the two sides of the base substrate of two pieces of ceramic wafers or one side and the periphery even spread refractory ceramics glaze of solder side, periphery glaze on solder side evenly leaves several aspirating hole, and the base substrate consistency from top to bottom of two pieces of ceramic wafers is stacked together, send in vacuum edge sealing stove; Back vacuumizes, limit heating, and be evacuated to below 0.1Pa, be warming up to the melt temperature more than 1250 DEG C of ceramic post sintering and glaze, aspirating hole disappears, and stops heating; With stove cooling, two pieces of insulating boards hermetic weld together by refractory ceramics glaze, open fire door and obtain required vacuum insulation panel.
The sintering of ceramic wafer and the sealed junction of insulating board are combined by the present invention, both simplify technological process, turn improve production efficiency, reduce cost of production.
Embodiment 3: see Fig. 1, two pieces of insulating boards are toughened glass heat-insulation plate or semi-tempered glass insulating board, wherein one piece or low emissivity glass sheet, its preparation method is as follows: the one flat plate glass plate and the one piece of low emissivity glass sheet that first prepare required size according to the shape of made vacuum insulation panel and size, and carry out edging, chamfering, cleaning, drying; Secondly two pieces of glass plates are respectively charged in two moulding forms, this moulding form has mold and bed die (i.e. formpiston and former), glass plate is clipped between mold and bed die, and can exert pressure make upper and lower mould close, the moulding form that glass plate is housed is placed in bending furnace, be warming up to the temperature 650 DEG C that glass plate is softening, the pressure put on moulding form is relied on to make the glass plate in moulding form form convex surface, remove mold immediately and carry out wind-cooling reinforcing, obtaining tempering or semi-tempered glass glass plate; Again by the periphery even spread low temperature glass solder of two pieces of glass plates or one piece of glass plate, low temperature glass solder evenly leaves several aspirating hole, and two pieces of glass plate consistencies from top to bottom are stacked together, send in vacuum edge sealing stove, vacuum edge sealing stove and accessory has basic heating system and hot spot system; Back vacuumizes, limit heating, be evacuated to below 0.1Pa, first utilize basic heating system heats, after basal temperature rises to 300 DEG C, low temperature glass solder is heated to melt temperature more than 450 DEG C by recycling hot spot system such as far infra-red heater, and aspirating hole disappears, two pieces of glass plates bond together by the low temperature glass solder of melting, stop heating, with stove cooling, two pieces of glass plates hermetic weld together by low temperature glass solder, open fire door and obtain required vacuum insulation panel.
Because tempering and semi-tempered glass insulating board have higher intensity than simple glass plate, so under identical shape and size, the convex curvature of tempering or half tempered convex surface insulating board can be larger.Owing to utilizing the upper and lower die pressure of moulding form shaping, so convex surface insulating board has more regular shape, and prevent the distortion in toughening process, so edge sealing is simpler, sealing performance and intensity are also higher.Because vacuum edge sealing stove and accessory has basic heating system and hot spot system, the temperature at insulating board edge can be made to be rapidly heated to welding temperature, and tempering or semi-tempered glass insulating board are under lower basal temperature, in the long period and higher local temperature, obvious annealing phenomena can not occur, so can ensure to obtain tempering or semi-tempered glass insulating board in the shorter time.
Embodiment 4: see Fig. 2, two pieces of insulating boards are toughened glass heat-insulation plate or semi-tempered glass insulating board, wherein one piece or low emissivity glass sheet, one piece of glass plate also has edge band frame wherein, its preparation method is as follows: the one flat plate glass plate and the one piece of low emissivity glass sheet that first prepare required size according to the shape of made vacuum insulation panel and size, carry out edging, chamfering, cleaning, after drying, on one piece of glass plate, preferred lower glass plate utilizes printing technology that cryogenic glass powder cream is printed to edge band frame wherein, the width of edge band frame is 1.2mm, be highly 0.7mm, the distance of 7mm is had with the edge of glass plate, other are all same as embodiment 3.
The introducing of edge band frame not only can limit low temperature glass solder and dissolve rear random flowing, makes edge sealing neatly good-looking, and play good supporting role, the thickness making low temperature glass solder keep certain, reinforced seal effect, the more important thing is that its heating-up temperature is high, have bond more reliably with upper and lower insulating board, rough surface, to have with low temperature glass solder and be more firmly combined, thus improve tightness and the reliability of vacuum insulation panel.
Embodiment 5: see Fig. 3, vacuum insulation panel is made up of upper convex surface ceramic heat-insulation board and lower convex surface ceramic heat-insulation board, and the periphery of two pieces of insulating boards all has edge band frame, and the periphery of two pieces of insulating boards is welded together by low temperature glass solder, and centre is vacuum layer.Its preparation method is as follows: the metal stamping die first preparing upper and lower insulating board according to the shape of made vacuum insulation panel and size respectively, the periphery of mould is fluted, to form the edge band frame on insulating board, wherein go up that insulating board has an edge band frame, lower insulating board has two edge band frames, the size of upper insulating board edge band frame is between lower insulating board two edge band frames, after upper and lower insulating board closes sheet, the edge band frame of upper insulating board can be embedded between two edge band frames of lower insulating board; Secondly the raw material making ceramic heat-insulation board is loaded in mould, and through press extrusion forming, open the base substrate that mould obtains ceramic heat-insulation board, be placed in drier dry; Then by the two sides of the base substrate of two pieces of ceramic wafers or an even spread refractory ceramics glaze, send into respectively in high temperature sintering furnace; Be warming up to the melt temperature more than 1250 DEG C of ceramic post sintering and glaze, stop heating; With stove cooling, obtain the upper and lower convex surface ceramic heat-insulation board with edge band frame; Again evenly fill low temperature glass solder by between two of lower insulating board edge band frames, and two pieces of insulating board consistencies from top to bottom are stacked together, send in vacuum edge sealing stove; Back vacuumizes, limit heating, be evacuated to below 0.1Pa, low temperature glass solder in edge band frame is heated to melt temperature more than 450 DEG C by the heating system of recycling vacuum edge sealing stove, the edge band frame of upper insulating board embeds between two edge band frames of lower insulating board under gravity, two pieces of insulating boards bond together by the low temperature glass solder of melting, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by low temperature glass solder, open fire door and obtain required vacuum insulation panel.
Embodiment 6: see Fig. 4, vacuum insulation panel is made up of the outer flat ceramic heat-insulation board of upper indent and the outer flat ceramic heat-insulation board of lower indent, the concave surface of wherein one piece of insulating board is coated with aluminium film, the periphery of two pieces of insulating boards all has edge band frame, the periphery of two pieces of insulating boards is welded together by solder, and centre is vacuum layer.Its preparation method is as follows: the metal stamping die first preparing upper and lower insulating board according to the shape of made vacuum insulation panel and size respectively, the periphery of mould is fluted, to form the edge band frame on insulating board, wherein go up that insulating board has an edge band frame, lower insulating board has two edge band frames, the size of upper insulating board edge band frame is between lower insulating board two edge band frames, after upper and lower insulating board closes sheet, the edge band frame of upper insulating board can be embedded between two edge band frames of lower insulating board; Secondly the raw material making ceramic heat-insulation board is loaded in mould, and through press extrusion forming, open the base substrate that mould obtains ceramic heat-insulation board, be placed in drier dry; Then by the two sides of the base substrate of two pieces of ceramic wafers or an even spread refractory ceramics glaze, send into respectively in high temperature sintering furnace; Be warming up to the melt temperature more than 1250 DEG C of ceramic post sintering and glaze, stop heating; With stove cooling, obtain the outer flat ceramic heat-insulation board of upper and lower indent with edge band frame, plated aluminum film on the concave surface of one piece of insulating board wherein subsequently, forms Low emissivity insulating board; Again will fill brazing metal glass putty between two of lower insulating board edge band frames or spread tinfoil paper or tin silk, and two pieces of insulating board consistencies from top to bottom are stacked together, send in vacuum edge sealing stove; Back vacuumizes, limit heating, be evacuated to below 0.1Pa, be warming up to more than the melting temperature of metallic tin as 240 DEG C, metallic tin will melt, the edge band frame of upper insulating board embeds between the edge band frame of lower insulating board under gravity, and two pieces of insulating boards bond together by the metallic tin of melting; Stop heating, with stove cooling, two pieces of insulating boards hermetic weld together by brazing metal tin, open fire door and obtain required vacuum insulation panel.
Adopt edge band frame, can be easy to utilize low-melting-point metal or alloy to realize the solder bonding metal of vacuum insulation panel, because the selectable scope of brazing temperature is very large, so not only can overall heat insulating plate, reduce heating furnace cost and simplify production technology, and can significantly reduce edge sealing temperature, shorten the heat time, thus reduce cost of production, enhance productivity.
Embodiment 7: see Fig. 5, in two pieces of insulating boards, one piece is ceramic heat-insulation board, another block is the low emissivity glass insulating board being coated with aluminium film, two pieces of insulating boards all has edge band frame, its preparation method is as follows: first according to the shape of made vacuum insulation panel and one piece of low emissivity glass insulating board of size preparation required size, carry out edging, chamfering, after cleaning, drying, glass heat-proof plate utilizes printing technology cryogenic glass powder cream is printed to edge band frame, the metal stamping die of ceramic heat-insulation board is prepared according to the shape of made vacuum insulation panel and size, the periphery of mould is fluted, to form the edge band frame on insulating board, wherein go up that insulating board has an edge band frame, lower insulating board has two edge band frames, the size of upper insulating board edge band frame is between lower insulating board two edge band frames, after upper and lower insulating board closes sheet, the edge band frame of upper insulating board can be embedded between two edge band frames of lower insulating board, secondly glass heat-proof plate is loaded mould, is placed in bending furnace, be warming up to the temperature that glass heat-proof plate is softening, the gravity of glass heat-proof plate self is relied on to make glass heat-proof plate form convex surface downwards, edge band frame is also in softening molten condition and glass heat-proof plate is bonded together, carry out wind-cooling reinforcing immediately, obtain the tempering with edge band frame or semi-tempered glass insulating board, the raw material making ceramic heat-insulation board is loaded in mould, and through press extrusion forming, opens the base substrate that mould obtains ceramic heat-insulation board, be placed in drier dry, then by the two sides of the base substrate of ceramic wafer or an even spread refractory ceramics glaze, send in high temperature sintering furnace respectively, be warming up to the melt temperature more than 1250 DEG C of ceramic post sintering and glaze, stop heating, with stove cooling, obtain the ceramic heat-insulation board with edge band frame, again evenly fill low temperature glass solder by between two of lower insulating board edge band frames, and on upper or lower insulating board, adopt low temperature glass solder to print supporter, supporter is the lattice arrangement parallel with edge band frame, distance between 2 is 150mm, supporter is cylindric, its diameter is 1.2mm, highly for 2.0mm, the height of supporter closes sheet rear support thing position spatial altitude 0.1mm higher than upper and lower two pieces of insulating boards, be stacked together by two pieces of insulating board consistencies from top to bottom, send in vacuum edge sealing stove, vacuum edge sealing stove and accessory has basic heating system and hot spot system, backmost vacuumize, limit is heated, be evacuated to below 0.1Pa, first utilize basic heating system heats, after basal temperature rises to the softening sintering temperature 300 DEG C of supporter, low temperature glass solder in edge band frame is heated to melt temperature as more than 450 DEG C by recycling hot spot system such as far infra-red heater, the edge band frame of upper insulating board embeds between two edge band frames of lower insulating board under gravity, two pieces of insulating boards bond together by the low temperature glass solder of melting, supporter is also sintered together with upper and lower two pieces of insulating boards, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by low temperature glass solder, open fire door and obtain required vacuum insulation panel.
Supporter adopts low temperature glass solder to make, and has lower sintering temperature, makes it can sinter in edge sealing process, and by means of its slightly high height, upper and lower insulating board reliably can be bonded together, thus play effective supporting role; The existing outward appearance being similar to dull and stereotyped insulating board of the curved surface that curvature is larger has again the intensity higher than dull and stereotyped insulating board, thus greatly can reduce the quantity reducing supporter, improves the heat insulation and sound insulation value of insulating board further.
Embodiment 8: see Fig. 6, vacuum insulation panel is made up of upper convex surface ceramic heat-insulation board and lower convex surface ceramic heat-insulation board, the concave surface of wherein one piece of insulating board is coated with aluminium film, two pieces of insulating boards all there are edge band frame and supporter, the periphery of two pieces of insulating boards is welded together by solder, and centre is vacuum layer.Its preparation method is as follows: the metal stamping die first preparing upper and lower insulating board according to the shape of made vacuum insulation panel and size respectively, fluted on mould, to form edge band frame on insulating board and supporter, wherein go up that insulating board has an edge band frame, lower insulating board has two edge band frames, the size of upper insulating board edge band frame is between lower insulating board two edge band frames, after upper and lower insulating board closes sheet, the edge band frame of upper insulating board can be embedded between two edge band frames of lower insulating board; Secondly the raw material making ceramic heat-insulation board is loaded in mould, and through press extrusion forming, open the base substrate that mould obtains ceramic heat-insulation board, be placed in drier dry; Then by the two sides of the base substrate of two pieces of ceramic wafers or an even spread refractory ceramics glaze, send into respectively in high temperature sintering furnace; Be warming up to the melt temperature more than 1250 DEG C of ceramic post sintering and glaze, stop heating; With stove cooling, obtain the upper and lower convex surface ceramic heat-insulation board with edge band frame and supporter, plated aluminum film on the concave surface of one piece of insulating board wherein subsequently, forms Low emissivity insulating board; Again will fill metal alloy solder Zinc alloy powder between two of lower insulating board edge band frames or spread kirsite paper tinsel or saxonia metal wire, and two pieces of insulating board consistencies from top to bottom are stacked together, send in vacuum edge sealing stove; Back vacuumizes, limit heating, be evacuated to below 0.1Pa, be warming up to the melting temperature of kirsite as more than 380 DEG C, kirsite melts, the edge band frame of upper insulating board embeds between the edge band frame of lower insulating board under gravity, and two pieces of insulating boards bond together by the kirsite of melting; Stop heating, with stove cooling, two pieces of insulating boards hermetic weld together by solder kirsite, open fire door and obtain required vacuum insulation panel.
Upper and lower insulating board all has strip supporter, supporter vertical pile supports, upper and lower insulating board is still point cantact by supporter, and between supporter and insulating board, be linear contact lay, increase contact area, reduce the tensile stress of insulating board in support place, so the quantity of supporter can be reduced, thus improve the heat insulation and sound insulation value of insulating board further.
Embodiment 9: see Fig. 7, vacuum insulation panel is made up of upper convex glass insulating board, middle ceramic heat-insulation board and lower convex glass insulating board, and the periphery of every two pieces of insulating boards is welded together by low temperature glass solder, and centre is two vacuum layer.Its preparation method is as follows: the two blocks of sheet glass plates and the one piece of ceramic wafer that first prepare required size according to the shape of made vacuum insulation panel and size, and carries out edging, chamfering, cleaning, dry; Secondly two pieces of glass plates are loaded mould, are placed in bending furnace, be warming up to the temperature that glass plate is softening, rely on the gravity of glass plate self to make glass plate form convex surface downwards, and be down to room temperature with stove; Again by the periphery even spread low temperature glass solder of three pieces of insulating boards or two pieces of insulating boards or middle insulating board solder side, low temperature glass solder evenly leaves several aspirating hole, and three pieces of insulating board consistencies from top to bottom are stacked together, send in vacuum edge sealing stove; Back vacuumizes, limit heating, be evacuated to below 0.1Pa, be warming up to the melt temperature more than 450 DEG C of low temperature glass solder, aspirating hole disappears, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by low temperature glass solder, open fire door and obtain required vacuum insulation panel.
Embodiment 10: see Fig. 8, vacuum insulation panel is by upper convex glass insulating board, intermetallic metal insulating board and lower convex glass insulating board composition, on, lower two pieces of insulating boards are toughened glass heat-insulation plate or semi-tempered glass insulating board, wherein one piece is still coated with the low emissivity glass insulating board of aluminium film, three pieces of insulating boards all has edge band frame, its preparation method is as follows: the one flat plate glass plate and the one piece of low emissivity glass sheet that first prepare required size according to the shape of made vacuum insulation panel and size, carry out edging, chamfering, cleaning, after drying, the solder side of two pieces of insulating boards utilize printing technology cryogenic glass powder cream is printed to edge band frame, prepare one piece of metal sheet of required size as iron plate, aluminium sheet or corrosion resistant plate etc. according to the shape of made vacuum insulation panel and size, after cleaning, drying, the solder side of insulating board utilizes printing technology frit for porcelain enamel is printed to edge band frame, wherein go up insulating board and have an edge band frame, the upper surface of middle insulating board has that two edge band frame soffits have an edge band frame, lower insulating board has two edge band frames, the size of edge band frame is above between the edge band frame of two below, after upper, middle and lower insulating board closes sheet, edge band frame above can be embedded between two edge band frames below, secondly upper and lower two pieces of insulating boards are loaded mould, are placed in bending furnace, be warming up to the temperature that glass plate is softening, the gravity of insulating board self is relied on to make insulating board form convex surface downwards, edge band frame is also in softening molten condition and insulating board is bonded together, carry out wind-cooling reinforcing immediately, obtain the tempering with edge band frame or semi-tempered glass insulating board, middle insulating board directly enters high-temperature tubring stove, obtains the metal heat-insulated plate with edge band frame, again evenly fill low temperature glass solder by between middle insulating board and two edge band frames of lower insulating board, and be stacked together by three pieces of insulating board consistencies from top to bottom, send in vacuum edge sealing stove, vacuum edge sealing stove and accessory has basic heating system and hot spot system, backmost vacuumize, limit is heated, be evacuated to below 0.1Pa, first utilize basic heating system heats, after basal temperature rises to 300 DEG C, low temperature glass solder in edge band frame is heated to melt temperature more than 450 DEG C by recycling hot spot system such as far infra-red heater, edge band frame above embeds between two edge band frames below under gravity, three pieces of insulating boards bond together by the low temperature glass solder of melting, stop heating, lower the temperature with stove, three pieces of insulating boards hermetic weld together by low temperature glass solder, open fire door and obtain required vacuum insulation panel.
All above-mentioned this intellectual properties of primary enforcement, not setting restriction this new product of other forms of enforcement and/or new 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 new product of the present invention.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a convex vacuum thermal baffle, comprise insulating board and lower insulating board, it is characterized in that: the periphery of the solder side of described upper insulating board and lower insulating board all has edge band frame, described edge band frame is produced on the soffit of described upper insulating board and on the upper surface of described lower insulating board by squeezing, etching or the mode of printing-sintering; The edge band frame of described upper insulating board and lower insulating board can be entrenched togather mutually, forms mazy hermetically-sealed construction to the vacuum layer of described convex vacuum thermal baffle; The periphery of described upper insulating board and lower insulating board is welded together in vacuum edge sealing stove by the edge band frame that is entrenched togather and solder, the vacuum layer that between described upper insulating board and described lower insulating board, formation one is closed, described upper insulating board and described lower insulating board are convex surface insulating boards, convex surface facing outside.
2. convex vacuum thermal baffle according to claim 1, is characterized in that described upper insulating board at least containing an edge band frame, and described lower insulating board is at least containing two edge band frames.
3. convex vacuum thermal baffle according to claim 1, it is characterized in that described convex vacuum thermal baffle also comprises one piece of middle insulating board, described middle insulating board is clipped between described upper insulating board and described lower insulating board, and described upper insulating board and described lower insulating board form two closed vacuum layer respectively with described middle insulating board.
4. convex vacuum thermal baffle according to claim 1, is characterized in that described upper and lower insulating board comprises glass plate, ceramic wafer or metal sheet.
5. convex vacuum thermal baffle according to claim 4, is characterized in that described ceramic wafer is the convex surface insulating board with edge band frame or supporter be made up of diel or slip casting mould.
6. convex vacuum thermal baffle according to claim 1, it is characterized in that the convex surface of described upper and lower insulating board bends high is 1 ~ 20mm.
7. convex vacuum thermal baffle according to claim 1, is characterized in that there is supporter in described vacuum layer, is cylindric when above support is on one piece of insulating board, is strip time on upper and lower two pieces of insulating boards.
8. convex vacuum thermal baffle according to claim 1, is characterized in that described solder comprises high temp glass or ceramic glaze, low temperature glass solder, low-melting-point metal or solder.
9. the preparation method of the convex vacuum thermal baffle described in any one of claim 1 to 8, is characterized in that comprising:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
3rd step, coating solder: by the solder side periphery even spread solder of insulating board;
4th step, high temperature edge sealing: in vacuum edge sealing stove, two pieces of insulating boards hermetic weld together by solder, obtain required convex vacuum thermal baffle.
10. the preparation method of the convex vacuum thermal baffle described in any one of claim 1 to 8, is characterized in that preparation method is as follows when described convex vacuum thermal baffle contains at least one block of toughened glass heat-insulation plate:
The first step, the preparation of mould: the making mould preparing convex surface insulating board according to the shape of the convex vacuum thermal baffle of required making and size;
When described insulating board is glass plate, make the hot bending die in existing heat-bending glass technology of preparing;
When described insulating board is ceramic wafer, make the diel in existing ceramic wafer technology of preparing or slip casting mould;
When described insulating board is metal sheet, make the diel in existing metal sheet technology of preparing;
Second step, the making of convex surface insulating board: utilize mould to prepare convex surface insulating board;
When described insulating board is glass plate, prepare the sheet glass plate of required size, and carry out edging, chamfering, cleaning, dry process, glass plate after processing two pieces loads in hot bending die, is placed in bending furnace, is warming up to the temperature 550 ~ 750 DEG C that glass plate is softening, relies on the gravity of glass plate self to make insulating board form convex surface downwards, and carry out wind-cooling reinforcing immediately, obtain convex surface armorplate glass;
When described insulating board is ceramic wafer, the powder of existing making ceramic wafer or slurry is loaded diel or slip casting mould, prepares the base substrate of ceramic wafer, drying and high temperature sintering, obtain convex surface ceramic wafer;
When described insulating board is metal sheet, prepares the metal sheet of required size, metal sheet is loaded in diel, obtain convex metallic plate through punching press;
3rd step, coating solder: the two pieces of insulating boards obtain second step or the solder side periphery even spread solder of one piece of insulating board, solder evenly leaves several aspirating hole, and is stacked together by described two pieces of insulating board consistencies from top to bottom, sends in vacuum edge sealing stove; Described vacuum edge sealing stove and accessory has basic heating system and hot spot system, and basic heating system adopts the mode of resistance heated as heating wire, electrothermal tube or electric hot plate; Hot spot system adopts the mode of resistance heated, infrared heating, LASER HEATING, Electromagnetic Heating or heating using microwave;
4th step, high temperature edge sealing: described vacuum edge sealing sole is vacuumized, limit is heated, be evacuated to below 0.1Pa, first adopt basic heating system by described vacuum edge sealing furnace interior and on, lower insulating board entirety is heated to a basal temperature, adopt hot spot system to upper again, lower insulating board peripheral position carries out spot heating, reach the object at short notice solder being heated to melting, thus reach edge sealing temperature, aspirating hole disappears, stop heating, lower the temperature with stove, two pieces of insulating boards hermetic weld together by solder, the fire door opening vacuum edge sealing stove obtains required convex vacuum thermal baffle.
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| CN103422638A (en) * | 2013-07-17 | 2013-12-04 | 戴长虹 | Double-vacuum-layer metal composite vacuum plate with getters and preparation method of double-vacuum-layer metal composite vacuum plate |
| CN104553155B (en) * | 2014-12-26 | 2017-07-14 | 合肥蓝氏特种玻璃有限责任公司 | Plain edition bulletproof glass |
| CN106592792B (en) * | 2016-12-20 | 2019-01-08 | 北京住福科技有限公司 | The method of heat-insulation system is laid with outside a kind of outer wall heat insulating system and wall |
| WO2020118668A1 (en) * | 2018-12-11 | 2020-06-18 | 淄博环能海臣环保技术服务有限公司 | Hollow glass in stainless steel frame brazed with compound glass frame supporting composite sheet |
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| GB2399101A (en) * | 2003-03-04 | 2004-09-08 | Michael John Rickards | A sound barrier vacuum panel comprising domed outer walls |
| WO2005057077A1 (en) * | 2003-12-12 | 2005-06-23 | Kaori Takeshima | Heat insulating panel and heat insulating structure utilizing the heat insulating panel |
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