CN102953510A - Convex vacuum ceramic thermal baffle and manufacturing method thereof - Google Patents
Convex vacuum ceramic thermal baffle and manufacturing method thereof Download PDFInfo
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- CN102953510A CN102953510A CN2012100756096A CN201210075609A CN102953510A CN 102953510 A CN102953510 A CN 102953510A CN 2012100756096 A CN2012100756096 A CN 2012100756096A CN 201210075609 A CN201210075609 A CN 201210075609A CN 102953510 A CN102953510 A CN 102953510A
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Abstract
The invention provides a vacuum ceramic thermal baffle comprising an upper thermal baffle and a lower thermal baffle, wherein the peripheries of the upper thermal baffle and the lower thermal baffle are welded together by welding fluxes, a closed vacuum layer is formed between the upper thermal baffle and the lower thermal baffle, the upper thermal baffle and the lower thermal baffle are both convex, and the convex sides of the convex thermal plates face to the outer side. According to a manufacturing method of the vacuum ceramic thermal baffle provided by the invention, the process is simple, the manufactured vacuum ceramic thermal baffle overcomes the defects of the existing thermal baffle, the air tightness of the vacuum layer of the vacuum ceramic thermal baffle can be effectively ensured, the service life of the vacuum ceramic thermal baffle is prolonged, the strength, the thermal insulation, the sound insulation and the fire resistance of the vacuum ceramic thermal baffle are enhanced, and meanwhile, the vacuum ceramic thermal baffle has an excellent decorative effect.
Description
Technical field
The present invention relates to the energy-saving building technology field, relate in particular to a kind of vacuum ceramic insulating board and preparation method thereof.
Background technology
The used material of domestic construction exterior-wall heat insulation is mainly B level heat insulating material at present, such 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 can accelerate large fire spread; Simultaneously, molten contracting can occur in organic material when fire, produce the burning dropping, institute's tile fixing comes off on the initiation insulation layer, cause possibly spot fire and secondary injury, so national relative section is prohibited exterior-wall heat insulation and is used organic insulation material, particularly at highrise building and public building.Reach in the heat insulating material of A grade standard in combustibility, it mainly is the inorganic material take mineral wool and rock wool as representative, but existing home made article has very large gap at aspects such as water absorption rate, intensity, weatherabilities with the Application in Building requirement, it is directly used in construction wall insulation, suction, tenesmus, the problem such as softening will occur.In addition, A level heat insulating material cost is higher than organic material far away, and the complicated construction technique construction cost is the expense of B level heat insulating material head and shoulders above, and its heat-insulating property is poor and energy consumption is high, can not satisfy the needs of national current energy-saving and emission-reduction.
Summary of the invention
Technical problem to be solved by this invention is the defective that is for existing building insulating board, warming plate existence, a kind of novel vacuum ceramic insulating board and preparation method thereof is provided, the preparation method technique of this vacuum ceramic insulating board is simple, prepared vacuum ceramic insulating board can overcome the deficiency of existing insulating board and warming plate, can effectively guarantee the vacuum ceramic insulating board tightness, increase the service life, and can increase its intensity and heat insulation, sound insulation, fireproof performance, also have simultaneously good decorative effect.
In order to solve the problems of the technologies described above, the invention provides a kind of convex surface vacuum ceramic insulating board, it comprises insulating board, lower insulating board, the periphery of described upper insulating board and described lower insulating board welds together by scolder, form the vacuum layer of a sealing between described upper insulating board and the described lower insulating board, described upper insulating board and described lower insulating board are the convex surface insulating boards, the high 0.1mm that is not less than of the bow of described convex surface insulating board, and convex surface is toward the outer side.
Insulating board in the middle of described convex surface vacuum ceramic insulating board can also comprise one, insulating board is clipped between described upper insulating board and the described lower insulating board in the middle of described, and described upper insulating board and described lower insulating board form respectively the vacuum layer of two sealings with described middle insulating board.
Described convex surface vacuum ceramic insulating board may further include the middle insulating board of polylith, thereby comprises the vacuum layer of a plurality of sealings.
The upper insulating board of convex surface vacuum ceramic insulating board and lower insulating board utilize the convex shape of insulating board to resist atmospheric pressure, make two insulating boards can not press together, keep the vacuum layer between two insulating boards, have saved the very large supporter of making and installation difficulty; Do not had the conduction of supporter, the heat insulation and sound insulation value of vacuum insulation panel is better; Convex configuration makes insulating board that higher compressive strength and flexural strength be arranged; Convex configuration makes vacuum layer that larger space be arranged, and more can keep for a long time the life-span of vacuum state, vacuum insulation panel longer, even lose vacuum, its performance also is better than general hollow heat insulation plate.
Be coated with low-radiation film on the inner surface of described upper or lower insulating board, such as aluminium film etc.
Convex surface the bow high 1～200mm that is preferably, the more preferably 1～20mm of upper and lower two convex surface insulating boards of described vacuum insulation panel.
The convex surface bow of described convex surface vacuum ceramic insulating board high shape and size and purposes decision by insulating board, under the prerequisite that satisfies opposing atmospheric pressure and purposes, bow is high as small as possible, be advisable with 3 ~ 9mm when being used for the common building insulating board, the space that 6 ~ 18mm is namely arranged between two insulating boards, be equivalent to existing hollow glass, under atmospheric pressure almost plane is best, to obtain preferably visual effect and to reduce the cost of described vacuum insulation panel and the space that takies.
It is high that described upper and lower insulating board can have an identical bow, also can have different bows high according to the requirement of construction.
Described scolder comprises commercially available high temp glass or ceramic glaze, low temperature glass solder and low-melting-point metal or solder, the preferred melt temperature of described high temp glass or ceramic glaze is approximately 1100-1300 ℃ glass or ceramic glaze, the preferred melt temperature of described low temperature glass solder is about 400-750 ℃ crown glass scolder, the preferred tin of described low-melting-point metal or solder or ashbury metal, zinc or kirsite, magnesium or magnesium alloy, aluminum or aluminum alloy etc.
Described scolder is coated on one or two solder side periphery and the solder side periphery of described middle insulating board of upper and lower insulating board at least.
Described insulating board can adopt the technology of preparing preparation of existing ceramic wafer, brick or thin plate, and it comprises the steps:
The first step, the preparation of mould: according to shape and the size of the vacuum ceramic insulating board of required making and whether have the edge band frame or supporter prepares the making mould of insulating board, i.e. diel or slip casting mould in the existing ceramic wafer technology of preparing;
Second step, the making of insulating board: will have the powder of making ceramic wafer or slurry pack into diel or slip casting mould now, and prepare the base substrate of ceramic wafer, through glazing, drying and high temperature sintering, obtain ceramic wafer, or direct ceramic wafer with edge band frame or supporter.
The formation of described single vacuum layer convex surface vacuum ceramic insulating board can adopt one-step method to form, described one-step method refer to the vacuum ceramic insulating board vacuumize with the sintering of edge sealing even ceramic wafer all in vacuum edge sealing stove a step finish, comprise the steps:
With the even coating scolder of one in the upper and lower insulating board or two solder side periphery, evenly leave several grooves that pass through the scolder band or slit on the scolder as aspirating hole; Upper and lower insulating board consistency from top to bottom is stacked together, sends in the vacuum edge sealing stove; To 0.1Pa, heating rises to more than the melt temperature of scolder the interior temperature of stove, reaches the edge sealing temperature to vacuum edge sealing stove evacuation, and aspirating hole disappears; Stopped heating reduces furnace temperature to room temperature, and described scolder welds together upper and lower insulating board is bubble-tight, thereby obtains needed convex surface vacuum ceramic insulating board.
It is as follows that the one-step method of described two vacuum layer convex surface vacuum ceramic insulating boards forms step:
The periphery of upper convex surface insulating board, lower convex surface insulating board and middle insulating board solder side evenly is coated with scolder, evenly leave several grooves that pass through the scolder band or slit on the scolder as aspirating hole, and three insulating board consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; To vacuum edge sealing stove evacuation to 0.1Pa, heating rises to more than the melt temperature of scolder the interior temperature of stove, reach the edge sealing temperature, aspirating hole disappears, stopped heating, lower the temperature with stove, scolder hermetic welds together three insulating boards, opens fire door and obtains required convex surface vacuum ceramic insulating board.
Described vacuum edge sealing stove or the single-unit furnace of batch production, or the tunnel kiln of continous way production, preferred tunnel kiln.
The mode of employing automatic edge sealing in vacuum edge sealing stove has been simplified activities, has lowered cost of production, has shortened the production cycle, has been improved production efficiency.
In the described vacuum layer, when high large, the convex shape that can rely on insulating board self of less or convex surface bow and intensity opposing atmospheric pressure, can not establish supporter when the planar dimension of upper and lower insulating board; When upper and lower insulating board can not rely on the convex shape of self and during intensity opposing atmospheric pressure, the supporter of a small amount of necessity should be set, supporter is resisted atmospheric pressure jointly with insulating board.
Above support adopts printing cryogenic glass powder or scolder preparation or utilizes mould to make; Preferably utilize mould directly to prepare on insulating board.
The above support minimum unit can be that the dot matrix of equilateral triangle is arranged, and the leg-of-mutton length of side is about 30～300mm, is preferably 50～150mm; Supporter is strip, its length is 0.3～5.0 mm, be preferably 0.5～2.0 mm, width is 0.1～2.0mm, be preferably 0.2～1.0mm, be 0.1～10.0mm highly, be preferably 0.5～3.0mm, the height of supporter be higher than the edge band frame height 0.1～2.0mm, be preferably 0.1～0.5mm; Supporter also can be for cylindric, its diameter is 0.1～3.0mm, be preferably 0.3～2.0mm, be 0.1～5.0 mm highly, be preferably 0.5～3.0mm, two insulating boards closed sheet rear support thing position spatial altitude 0～0.3 mm, are preferably 0.1～0.2mm about the height of supporter was higher than.
When supporter is printed on the insulating board, be preferably cylindric, more preferably coniform; When supporter is printed on up and down on two insulating boards simultaneously, be preferably strip, more preferably up-narrow and down-wide, cross section is leg-of-mutton rectangular, and vertical pile.
When insulating board all has the strip supporter up and down, the supporter vertical pile supports, insulating board still is the some contact by supporter up and down, and contact or the face contact for line between supporter and the insulating board, increased contact area, reduced the tensile stress of insulating board in support place, thus the quantity of supporter can be reduced, thus further improve the heat insulation and sound insulation value of insulating board.
Have at least the periphery of an insulating board to contain at least an edge band frame in the described upper and lower insulating board.
The height of described edge band frame is preferably 0.1～10mm, 0.1～1mm more preferably, and width is preferably 0.2～5mm, more preferably 1～2mm.
Can leave several aspirating holes on the described edge band frame, namely perpendicular to the edge band frame and along the equally distributed groove of edge band frame or slit, quantity is by the girth decision of upper and lower insulating board, and spacing approximately 50～150mm is advisable, and can seal described aspirating hole behind described solder fusing; Also can not stay aspirating hole, utilize the formed space, rough surface of the scolder that applies as the passage of gas discharge between insulating board, can shorten the time that vacuumizes but leave aspirating hole.
When only containing an edge band frame, described scolder is in the outside of described edge band frame, when containing a plurality of edge band frame, described scolder is in centre or centre and the outside of described edge band frame, described edge band frame is when the upper surface of the middle insulating board of the convex surface insulating board with two vacuum layer, identical with described lower insulating board, in the middle of described during the soffit of 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, be used for being coated with described scolder, described edge band frame is when the upper surface of the middle insulating board of the convex surface insulating board with two vacuum layer, identical with described lower insulating board, in the middle of described during the soffit of insulating board, identical with described upper insulating board.
When upper insulating board and lower insulating board respectively contain an edge band frame, the shape of two edge band frames and size or identical or different, be preferably shape identical, vary in size, at this moment, little edge band frame is included in the large edge band frame, described edge band frame is when the upper surface of the middle insulating board of the convex surface insulating board with two vacuum layer, identical with described lower insulating board, in the middle of described during the soffit of insulating board, identical with described upper insulating board.
Further, the edge band frame of described lower insulating board is Duoed one than the edge band frame of described upper insulating board, be that described upper insulating board contains an edge band frame at least, described lower insulating board contains two edge band frames at least, 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 described up and down edge band frame of insulating board is entrenched togather mutually, vacuum layer is carried out labyrinth sealing, described edge band frame is when the upper surface of the middle insulating board of the convex surface insulating board with two vacuum layer, identical with described lower insulating board, in the middle of described during the soffit of insulating board, identical with described upper insulating board.
The introducing of edge band frame not only can limit scolder and dissolve and randomly flow, make edge sealing neatly good-looking afterwards, and play good supporting role, make scolder keep certain thickness, reinforced seal effect, the more important thing is that itself and scolder have larger contact area, more firmly are combined, thereby improve tightness and the reliability of vacuum insulation panel.
Adopt the 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 wholely heat insulating board, reduce the cost of heating furnace and simplify production technology, and can decrease edge sealing temperature, shorten heat time heating time, thereby reduce production costs, enhance productivity.
Described edge band frame is made by the mode of squeezing or printing or mechanically spraying, and described edge band frame comprises fin and groove, the fin that preferably adopts mould squeezing or printing cryogenic glass powder to make.
Described squeezing mode is to pack the raw material of insulating board into inner surface with in depression or the mold cavity of protruding lines, and the after-applied pressure of matched moulds makes its periphery form fin and groove in the preparation insulating board.
Described mode of printing is the method that adopts serigraphy or mould printing or printer, scolder is imprinted on forms the fin that is raised in the insulating board surface on the insulating board.
When described edge band frame adopts the printing preparation, can be one-step print, also can be repeatedly to print.
Up and down the edge band frame of insulating board mutually chimeric after, not only reduced the edge sealing scolder consumption, reduced the requirement to the edge sealing scolder, and increased inner liner thickness, improved the up and down sealing strength of insulating board, thereby improved the qualification rate of product.
In order to solve the problems of the technologies described above, the invention provides the preparation method of above-mentioned convex surface vacuum ceramic insulating board, it comprises:
The first step, the preparation of mould: according to the shape of the convex surface vacuum ceramic insulating board of required making and the making mould of size preparation convex surface insulating board, i.e. diel or slip casting mould in the existing ceramic wafer technology of preparing;
Second step, the making of convex surface insulating board: will have the powder of making ceramic wafer or slurry pack into diel or slip casting mould now, and prepare the base substrate of ceramic wafer, and through glazing, drying and high temperature sintering, obtain the convex surface ceramic wafer;
The 3rd step, coating scolder: with two insulating boards of second step acquisition or the even coating of the solder side periphery scolder of an insulating board, evenly leave several aspirating holes on the scolder, and described two insulating board consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;
The 4th step, the high temperature edge sealing: to described vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, be warming up to more than the melt temperature of scolder, reach the edge sealing temperature, aspirating hole disappears, stopped heating, with stove cooling, scolder hermetic welds together two insulating boards, the fire door of opening vacuum edge sealing stove obtains required convex surface vacuum ceramic insulating board.
The present invention also provides a kind of convex surface vacuum ceramic insulating board, it comprises: upper insulating board, lower insulating board and middle insulating board, insulating board is clipped between described upper insulating board and the described lower insulating board in the middle of described, described upper insulating board and described lower insulating board form respectively the vacuum layer of two sealings with described middle insulating board, the periphery of described upper insulating board, described lower insulating board and described middle insulating board welds together by scolder, described upper insulating board and described lower insulating board are the convex surface insulating boards, convex surface toward the outer side, described in the middle of insulating board be dull and stereotyped insulating board.
The preparation method of the convex surface vacuum ceramic insulating board of described vacuum layer with two sealings is as follows:
The first step, the preparation of mould: according to the shape of the vacuum ceramic insulating board of required making and the making mould of size preparation convex surface insulating board and dull and stereotyped insulating board, i.e. diel or slip casting mould in the existing ceramic wafer technology of preparing;
Second step, the making of insulating board: will have the powder of making ceramic wafer or slurry pack into diel or slip casting mould now, and prepare the base substrate of insulating board, and behind glazing, drying, high temperature sintering, obtain convex surface insulating board and dull and stereotyped insulating board;
In the 3rd step, the coating scolder: the periphery that second step is obtained the solder side of insulating board evenly is coated with scolder, leaves bleed-off passage on the scolder, and described three insulating board base substrate consistencies from top to bottom are stacked together, and sends in the vacuum edge sealing stove;
The 4th step, the high temperature sintering edge sealing: described vacuum edge sealing stove is heated and vacuumizes, be evacuated to 0.1Pa following, be warming up to more than the melt temperature of scolder, reach the edge sealing temperature; Stopped heating, with stove cooling, scolder hermetic welds together three insulating boards, the fire door of opening vacuum edge sealing stove obtains required vacuum ceramic insulating board.
The present invention also provides a kind of convex surface vacuum ceramic insulating board, it comprises insulating board, lower insulating board, described upper insulating board and described lower insulating board are the convex surface insulating boards, convex surface toward the outer side, the solder side periphery of described upper insulating board has an edge band frame at least, the solder side periphery of described lower insulating board has two edge band frames at least, the periphery of described upper insulating board and described lower insulating board welds together by scolder, forms the vacuum layer of a sealing between described upper insulating board and the described lower insulating board.
The present invention also provides the preparation method of described convex surface vacuum ceramic insulating board as follows:
The first step, the preparation of mould: according to the shape of the convex surface vacuum ceramic insulating board of required making and the making mould of size preparation convex surface insulating board, namely have diel or slip casting mould in the ceramic wafer technology of preparing now, mould peripheral fluted, to form the edge band frame on the insulating board, wherein go up insulating board and have an edge band frame at least, lower insulating board has two edge band frames at least, the size of upper insulating board edge band frame is between lower insulating board edge band frame, after insulating board closed sheet up and down, the edge band frame of upper insulating board can be embedded between the edge band frame of lower insulating board;
Second step, the making of convex surface insulating board: will have the powder of making ceramic wafer or slurry pack into diel or slip casting mould now, and prepare the base substrate of insulating board, and after glazing, drying, obtain the insulating board base substrate with the edge band frame;
The 3rd step, the coating scolder: the scolder of evenly packing in the edge band frame with the lower insulating board base substrate of second step acquisition, leave bleed-off passage on the scolder, and described two insulating board base substrate consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;
The 4th step, high temperature sintering edge sealing: described vacuum edge sealing stove is heated and vacuumizes, be evacuated to that 0.1Pa is following, more than the melt temperature of the sintering temperature that is warming up to the insulating board base substrate and scolder, reach the edge sealing temperature; After insulation, stopped heating, with stove cooling, scolder hermetic welds together two insulating boards, and the fire door of opening vacuum edge sealing stove obtains required vacuum ceramic insulating board.
The present invention also provides a kind of convex surface vacuum ceramic insulating board, it comprises: upper insulating board, lower insulating board and middle insulating board, insulating board is clipped between described upper insulating board and the described lower insulating board in the middle of described, described upper insulating board and described lower insulating board form respectively the vacuum layer of two sealings with described middle insulating board, the periphery of described upper insulating board, described lower insulating board and described middle insulating board welds together by scolder, described upper insulating board and described lower insulating board are the convex surface insulating boards, convex surface toward the outer side, described in the middle of insulating board be dull and stereotyped insulating board.
The present invention also provides the preparation method of described convex surface vacuum ceramic insulating board as follows:
The first step, the preparation of mould: according to the shape of the convex surface vacuum ceramic insulating board of required making and the making mould of size preparation convex surface insulating board, namely have diel or slip casting mould in the ceramic wafer technology of preparing now, mould peripheral fluted, to form the edge band frame on the insulating board, wherein go up insulating board and have an edge band frame at least, the upper surface of middle insulating board has at least two edge band frame soffits to have an edge band frame at least, lower insulating board has two edge band frames at least, the size of top edge band frame is between following edge band frame, after the upper, middle and lower insulating board closed sheet, top edge band frame can be embedded between the following edge band frame;
Second step, the making of insulating board: will have the powder of making ceramic wafer or slurry pack into diel or slip casting mould now, and prepare the base substrate of insulating board, and after glazing, drying, obtain the base substrate with the insulating board of edge band frame;
The 3rd step, the coating scolder: the scolder of evenly packing in the edge band frame with the lower insulating board of second step acquisition and middle insulating board base substrate, leave bleed-off passage on the scolder, and described three insulating board base substrate consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;
The 4th step, high temperature sintering edge sealing: described vacuum edge sealing stove is heated and vacuumizes, be evacuated to that 0.1Pa is following, more than the melt temperature of the sintering temperature that is warming up to the insulating board base substrate and scolder, reach the edge sealing temperature; After insulation, stopped heating, with stove cooling, scolder hermetic welds together three insulating boards, and the fire door of opening vacuum edge sealing stove obtains required vacuum ceramic insulating board.
[0045]The invention has the beneficial effects as follows:
The upper and lower insulating board of vacuum insulation panel of the present invention is the convex surface insulating board, because insulating board itself has very high compressive strength, resist atmospheric pressure so rely on the shape of convex surface insulating board, can not put or put less supporter, not only simplify vacuum insulation panel manufacture craft, reduce production costs, so that the production of vacuum insulation panel is more easy, and can improve intensity and heat insulation, the sound insulation value of vacuum insulation panel.On the vacuum insulation panel, the periphery of lower insulating board contains the edge band frame, so that the edge sealing of vacuum insulation panel is easier, the mutual chimeric sealing effectiveness of insulating board under deformation that guaranteed of edge band frame up and down, the edge band frame has increased sealing area and airtight layer thickness between the insulating board, adhesive power and the adhesive strength of sealing-in have greatly been strengthened, increased the tightness of vacuum layer between the insulating board, improved the life-span of vacuum insulation panel, realized that one-step method prepares vacuum insulation panel, thereby can promote the suitability for industrialized production of vacuum insulation panel, greatly improve productivity ratio and the qualification rate of vacuum insulation panel, reduce the cost of production of vacuum insulation panel.Vacuum insulation panel of the present invention can replace existing Ceramic Tiles, plate and thin plate, directly apply to the exterior wall of building, integrate heat-insulation and heat-preservation, sound insulation and noise reduction, waterproof, fire prevention and decoration, not only construction is simple, cost is low, and with the same life-span of building, not only can be used for new building, and can be used for the reducing energy consumption of existing building, solve building heat preservation and fire prevention, extraneous adornment, the contradiction between application life, can greatly promote the development of building energy conservation cause.
Description of drawings
Fig. 1 is convex surface vacuum ceramic heat insulation plate structure schematic diagram of the present invention;
Fig. 2 is the convex surface vacuum ceramic heat insulation plate structure schematic diagram that the edge band frame is arranged of the present invention;
Fig. 3 is the convex surface vacuum ceramic heat insulation plate structure schematic diagram that edge band frame and supporter are arranged of the present invention;
Fig. 4 is the convex surface vacuum ceramic heat insulation plate structure schematic diagram of of the present invention pair of vacuum layer.
Among the figure: 1. go up insulating board, 2. descend insulating board, 3. scolder 4. descends the edge band frame on the insulating board, 5. goes up the edge band frame of insulating board, 6. descends the supporter on the insulating board, 7. goes up the supporter on the insulating board, 8. middle insulating board.
The specific embodiment
Below adopt embodiment and accompanying drawing to describe embodiments of the present invention in detail, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
Embodiment 1: referring to Fig. 1, vacuum insulation panel is comprised of upper convex surface ceramic heat-insulation board 1 and lower convex surface ceramic heat-insulation board 2, and the periphery of two insulating boards welds together by refractory ceramics glaze 3, and the centre is vacuum layer.Its preparation method is as follows: at first shape and the size according to the made vacuum insulation panel prepares metal stamping die; Secondly the raw material that will make ceramic heat-insulation board is packed in the mould, and through the press extrusion forming, opens the base substrate that mould obtains ceramic heat-insulation board, is placed on drying in the drier; Again with the even coating refractory ceramics glaze of the periphery of the two sides of the base substrate of two ceramic wafers or one side and solder side, evenly leave several aspirating holes on the peripheral glaze on the solder side, and the base substrate consistency from top to bottom of two ceramic wafers is stacked together, send in the vacuum edge sealing stove; The back vacuumizes, the limit heating, and the melt temperature that be evacuated to below the 0.1Pa, is warming up to ceramic post sintering and glaze is more than 1250 ℃, and aspirating hole disappears, stopped heating; With the stove cooling, the refractory ceramics glaze hermetic welds together two insulating boards, opens fire door and obtains required vacuum insulation panel.
The present invention is combined the sintering of ceramic wafer and the sealed junction of insulating board, has both simplified technological process, has improved again production efficiency, has reduced cost of production.
Embodiment 2: referring to Fig. 2, vacuum insulation panel is comprised of upper convex surface ceramic heat-insulation board and lower convex surface ceramic heat-insulation board, and the periphery of two insulating boards all has the edge band frame.Its preparation method is as follows: the metal stamping die that at first prepares respectively upper and lower insulating board according to the shape of made vacuum insulation panel and size, mould peripheral fluted, to form the edge band frame on the insulating board, wherein going up insulating board has an edge band frame, lower insulating board that two edge band frames are arranged, the size of upper insulating board edge band frame is between two edge band frames of lower insulating board, after insulating board closed sheet up and down, the edge band frame of upper insulating board can be embedded between two edge band frames of lower insulating board; Secondly the raw material that will make ceramic heat-insulation board is packed in the mould, and through the press extrusion forming, opens the base substrate that mould obtains ceramic heat-insulation board, is placed on drying in the drier; Then with the even coating refractory ceramics glaze of the two sides of the base substrate of two ceramic wafers or one side, obtain the upper and lower insulating board base substrate with the edge band frame; Again evenly pack between two edge band frames with lower insulating board base substrate solder metal aluminium such as aluminium powder, aluminium foil or aluminium wire etc., and two insulating board consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; Backmost heating edge, vacuumize, be evacuated to below the 0.1Pa, be warming up to the melting temperature of metallic aluminium more than 660 ℃, metallic aluminium will melt, between the edge band frame of insulating board, the metallic aluminium of melting bonded together two insulating boards under the edge band frame of upper insulating board embedded under action of gravitation; Continue to be warming up to the sintering temperature of ceramic wafer as more than 1250 ℃, make the ceramic wafer densified sintering product, high temperature also more is conducive to the discharge of gas in the ceramic wafer, and the gas between ceramic wafer can be overflowed by liquid metals aluminium, reaches higher vacuum thereby make up and down between the insulating board; Stopped heating, with stove cooling, brazing metal aluminium hermetic welds together two ceramic wafers, opens fire door and obtains required vacuum ceramic insulating board.
The introducing of edge band frame not only can limit scolder and dissolve and randomly flow, make edge sealing neatly good-looking afterwards, and play good supporting role, make scolder keep certain thickness, reinforced seal effect, the more important thing is that itself and scolder have larger contact surface, more firmly are combined, thereby improve tightness and the reliability of vacuum insulation panel.
Embodiment 3: referring to Fig. 2, vacuum insulation panel is comprised of upper convex surface ceramic heat-insulation board and lower convex surface ceramic heat-insulation board, one is ceramic heat-insulation board in two insulating boards, another piece is the low radiation ceramic insulating board that is coated with the aluminium film, the periphery of two insulating boards all has the edge band frame, the periphery of two insulating boards welds together by low temperature glass solder, and the centre is vacuum layer.Its preparation method is as follows: the metal stamping die that at first prepares respectively upper and lower insulating board according to the shape of made vacuum insulation panel and size, mould peripheral fluted, to form the edge band frame on the insulating board, wherein going up insulating board has an edge band frame, lower insulating board that two edge band frames are arranged, the size of upper insulating board edge band frame is between two edge band frames of lower insulating board, after insulating board closed sheet up and down, the edge band frame of upper insulating board can be embedded between two edge band frames of lower insulating board; Secondly the raw material that will make ceramic heat-insulation board is packed in the mould, and through the press extrusion forming, opens the base substrate that mould obtains ceramic heat-insulation board, is placed on drying in the drier; Then with the even coating refractory ceramics glaze of the two sides of the base substrate of two ceramic wafers or one side, send into respectively in the high temperature sintering furnace; Be warming up to the melt temperature of ceramic post sintering and glaze more than 1250 ℃, stopped heating; With the stove cooling, obtain the upper and lower insulating board with the edge band frame; Again with the inner surface plated aluminum film of upper or lower insulating board, evenly be coated with full low temperature glass solder between two edge band frames of lower insulating board, and two insulating board consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; The back vacuumizes, the limit heating, be evacuated to below the 0.1Pa, the heating system of recycling vacuum edge sealing stove is heated to melt temperature more than 450 ℃ with the low temperature glass solder in the edge band frame, under the edge band frame of upper insulating board embeds under action of gravitation between two edge band frames of insulating board, the low temperature glass solder of melting bonds together two insulating boards, stopped heating, lower the temperature with stove, low temperature glass solder hermetic welds together two insulating boards, opens fire door and obtains required vacuum insulation panel.
Embodiment 4: referring to Fig. 3, vacuum insulation panel is comprised of upper convex surface ceramic heat-insulation board and lower convex surface ceramic heat-insulation board, and wherein one is the low radiation ceramic insulating board that is coated with the aluminium film, and the periphery of two insulating boards all has supporter is all arranged on edge band frame, the inner surface.Its preparation method is as follows: the metal stamping die that at first prepares respectively upper and lower insulating board according to the shape of made vacuum insulation panel and size, mould surperficial fluted, to form edge band frame and the supporter on the insulating board, wherein going up insulating board has an edge band frame, lower insulating board that two edge band frames are arranged, the size of upper insulating board edge band frame is between two edge band frames of lower insulating board, after insulating board closed sheet up and down, the edge band frame of upper insulating board can be embedded between two edge band frames of lower insulating board; Supporter is that cross section is leg-of-mutton rectangular, after upper and lower insulating board closes sheet, and the supporter vertical pile of upper and lower insulating board; Secondly the raw material that will make ceramic heat-insulation board is packed in the mould, and through the press extrusion forming, opens the base substrate that mould obtains ceramic heat-insulation board, is placed on drying in the drier; Then with the even coating refractory ceramics glaze of the two sides of the base substrate of two ceramic wafers or one side, send into respectively in the high temperature sintering furnace; Be warming up to the melt temperature of ceramic post sintering and glaze more than 1250 ℃, stopped heating; With the stove cooling, obtain the upper and lower insulating board with edge band frame and supporter; Again with inner surface plated aluminum film upper or time insulating board, the fusing point of packing between two edge band frames of lower insulating board is 380 ℃ kirsite, kirsite be shaped as powder, cream, paper tinsel or silk, and two insulating board consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove; The back vacuumizes, the limit heating, be evacuated to below the 0.1Pa, the heating system of recycling vacuum edge sealing stove is heated to melt temperature more than 380 ℃ with the kirsite scolder in the edge band frame, under the edge band frame of upper insulating board embeds under action of gravitation between two edge band frames of insulating board, the kirsite scolder of melting bonds together two insulating boards, stopped heating, lower the temperature with stove, the kirsite scolder hermetic welds together two insulating boards, opens fire door and obtains required vacuum insulation panel.
Embodiment 5: referring to Fig. 4, vacuum insulation panel is by upper convex surface insulating board, middle insulating board and lower convex surface insulating board form, low radiation heat insulation plate that still is coated with the aluminium film wherein, on three insulating boards, all has the edge band frame, its preparation method is as follows: at first shape and the size according to the made vacuum insulation panel prepares respectively, the metal stamping die of lower insulating board, mould peripheral fluted, to form the edge band frame on the insulating board, wherein go up insulating board an edge band frame is arranged, the upper surface of middle insulating board has two edge band frame soffits that an edge band frame is arranged, lower insulating board has two edge band frames, the size of top edge band frame is between two following edge band frames, after the upper, middle and lower insulating board closed sheet, top edge band frame can be embedded between two following edge band frames; Secondly the raw material that will make ceramic heat-insulation board is packed in the mould, and through the press extrusion forming, opens the base substrate that mould obtains ceramic heat-insulation board, is placed on drying in the drier; Then with the even coating refractory ceramics glaze of the two sides of the base substrate of three ceramic wafers or one side, send into respectively in the high temperature sintering furnace; Be warming up to the melt temperature of ceramic post sintering and glaze more than 1250 ℃, stopped heating; With the stove cooling, obtain the upper, middle and lower insulating board with the edge band frame; Again with the inner surface of upper or lower insulating board or a surperficial plated aluminum film of middle insulating board, in, fill the brazing metal glass putty or spread tinfoil paper or the tin silk between two edge band frames of lower insulating board, and three insulating board consistencies from top to bottom are stacked together and leave certain space of bleeding, send in the vacuum edge sealing stove; The back vacuumizes, the limit heating, be evacuated to 0.1Pa melting temperature following, that be warming up to metallic tin above such as 240 ℃, metallic tin will melt, and upper edge band frame embeds under action of gravitation between the lower seal edge strip frame, and the metallic tin of melting bonds together three insulating boards; Continue to be warming up to more than 300 ℃, high temperature more is conducive to the desorb of insulating board adsorbed gas, and the gas of desorb can be overflowed by liquid metals tin between the insulating board, thereby makes the vacuum that reaches higher between the insulating board; Stopped heating, with stove cooling, brazing metal tin hermetic welds together three insulating boards, opens fire door and obtains required vacuum insulation panel.
This intellectual property of primary enforcement that all are above-mentioned is not set 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 only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made 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 to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (10)
1. convex surface vacuum ceramic insulating board, it is characterized in that: comprise insulating board, lower insulating board, the periphery of described upper insulating board and described lower insulating board welds together by scolder, form the vacuum layer of a sealing between described upper insulating board and the described lower insulating board, described upper insulating board and described lower insulating board are the convex surface insulating boards, and convex surface toward the outer side.
2. convex surface vacuum ceramic insulating board as claimed in claim 1 is characterized in that having at least in described upper insulating board, the lower insulating board periphery of an insulating board to contain at least an edge band frame.
3. convex surface vacuum ceramic insulating board as claimed in claim 1, it is characterized in that described convex surface vacuum ceramic insulating board can also comprise a middle insulating board, insulating board is clipped between described upper insulating board and the described lower insulating board in the middle of described, and described upper insulating board and described lower insulating board form respectively the vacuum layer of two sealings with described middle insulating board.
4. convex surface vacuum ceramic insulating board as claimed in claim 1 is characterized in that the convex surface of described convex surface insulating board bends the high 1～20mm of being.
5. convex surface vacuum ceramic insulating board as claimed in claim 1 is characterized in that described scolder comprises high temp glass or ceramic glaze, low temperature glass solder and low-melting-point metal or solder.
6. convex surface vacuum ceramic insulating board as claimed in claim 1 is characterized in that having in the described vacuum layer supporter that is the dot matrix arrangement.
7. convex surface vacuum ceramic insulating board as claimed in claim 1 is characterized in that being coated with low-radiation film on the described inner surface upper or down insulating board.
8. convex surface vacuum ceramic insulating board as claimed in claim 2 is characterized in that described edge band frame is directly to prepare on described ceramic heat-insulation board by mould.
9. the preparation method of each described convex surface vacuum ceramic insulating board of claim 1 to 8 is characterized in that comprising:
The first step, the preparation of mould: according to the shape of the convex surface vacuum ceramic insulating board of required making and the making mould of size preparation convex surface insulating board, i.e. diel or slip casting mould in the existing ceramic wafer technology of preparing;
Second step, the making of convex surface insulating board: will have the powder of making ceramic wafer or slurry pack into diel or slip casting mould now, and prepare the base substrate of ceramic wafer, and through glazing, drying and high temperature sintering, obtain the convex surface ceramic wafer;
The 3rd step, coating scolder: with two insulating boards of second step acquisition or the even coating of the solder side periphery scolder of an insulating board, evenly leave several aspirating holes on the scolder, and described two insulating board consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;
The 4th step, the high temperature edge sealing: to described vacuum edge sealing sole vacuumize, limit heating, be evacuated to below the 0.1Pa, be warming up to more than the melt temperature of scolder, reach the edge sealing temperature, aspirating hole disappears, stopped heating, with stove cooling, scolder hermetic welds together two insulating boards, the fire door of opening vacuum edge sealing stove obtains required convex surface vacuum ceramic insulating board.
10. the preparation method of each described convex surface vacuum ceramic insulating board of claim 1 to 8 is characterized in that comprising:
The first step, the preparation of mould: according to the shape of the convex surface vacuum ceramic insulating board of required making and the making mould of size preparation convex surface insulating board, namely have diel or slip casting mould in the ceramic wafer technology of preparing now, mould peripheral fluted, to form the edge band frame on the insulating board, wherein go up insulating board and have an edge band frame at least, lower insulating board has two edge band frames at least, the size of upper insulating board edge band frame is between lower insulating board edge band frame, after insulating board closed sheet up and down, the edge band frame of upper insulating board can be embedded between the edge band frame of lower insulating board;
Second step, the making of convex surface insulating board: will have the powder of making ceramic wafer or slurry pack into diel or slip casting mould now, and prepare the base substrate of insulating board, and after glazing, drying, obtain the insulating board base substrate with the edge band frame;
The 3rd step, the coating scolder: the scolder of evenly packing in the edge band frame with the lower insulating board base substrate of second step acquisition, leave bleed-off passage on the scolder, and described two insulating board base substrate consistencies from top to bottom are stacked together, send in the vacuum edge sealing stove;
The 4th step, high temperature sintering edge sealing: described vacuum edge sealing stove is heated and vacuumizes, be evacuated to that 0.1Pa is following, more than the melt temperature of the sintering temperature that is warming up to the insulating board base substrate and scolder, reach the edge sealing temperature; After insulation, stopped heating, with stove cooling, scolder hermetic welds together two insulating boards, and the fire door of opening vacuum edge sealing stove obtains required vacuum ceramic insulating board.
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| CN103422581A (en) * | 2013-07-17 | 2013-12-04 | 戴长虹 | Metal vacuum insulated panel and preparation method thereof |
| CN103745935A (en) * | 2013-12-19 | 2014-04-23 | 北京时代民芯科技有限公司 | Vacuole-free transparent glass shell and metal sealing method |
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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 |
| CN201066022Y (en) * | 2007-06-06 | 2008-05-28 | 兆宁 | Metal vacuum heat-insulation plate |
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| CN103745935A (en) * | 2013-12-19 | 2014-04-23 | 北京时代民芯科技有限公司 | Vacuole-free transparent glass shell and metal sealing method |
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