CN104746720A - Glass welded metal vacuum insulation board with extraction opening and production method thereof - Google Patents
Glass welded metal vacuum insulation board with extraction opening and production method thereof Download PDFInfo
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- CN104746720A CN104746720A CN201310721335.8A CN201310721335A CN104746720A CN 104746720 A CN104746720 A CN 104746720A CN 201310721335 A CN201310721335 A CN 201310721335A CN 104746720 A CN104746720 A CN 104746720A
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Abstract
The invention discloses a glass welded metal vacuum composite insulation board with an extraction opening. The metal vacuum composite insulation board comprises a shell, a core material and a vacuum cavity, and is characterized in that the shell is made from either a low carbon steel plate or a low carbon steel composite plate, the core material is located in the vacuum cavity and is used for providing additional strength to the vacuum cavity to ensure the smoothness of the vacuum cavity at barometric pressure, and the vacuum cavity is a closed cavity formed by carrying out glass welding at normal pressure and high temperature and sealing at high pressure to the shell and the coefficients of thermal expansion of the low carbon steel plate and the glass solder are matched; the sealing is that an extraction opening preformed in the vacuum cavity is automatically sealed by a low temperature solder in a vacuum furnace according to a liquid sealing theory, and the low temperature solder comprises a low temperature metal and an alloy solder. A production method of the metal vacuum composite insulation board provided by the invention is simple in process, the defects of an existing insulation board and an existing vacuum insulated panel can be overcome, and the strength, heat insulation, sound insulation and fire resistance can be improved.
Description
Technical field
The present invention relates to vacuum heat-insulating plate, particularly relate to a kind of glass solder metal vacuum thermal insulation slab having extract opening and preparation method thereof.
Background technology
Current building exterior wall heat preserving material used is divided into A level heat insulating material and B level heat insulating material, and the fireproof performance of A level heat insulating material is good, but its heat-insulating property, water resistance etc. are all lower than B level heat insulating material, and there is the problems such as price is high, complicated construction technique; B level heat insulating material has the advantages such as cost is low, good heat insulating, construction technology are ripe, but its durability is bad, heat resistance is poor, easy firing, a large amount of poison gas is not only discharged during burning, and spreading of big fire can be accelerated, so prohibit the use organic insulation material for exterior-wall heat insulation in highrise building and public building.Vacuum heat-insulating plate was applied to building heat preservation field in recent years, its major advantage be belong to A level heat insulating material, good heat insulating, thickness is thin, unit mass is light, but also have that obvious shortcoming is as low in vacuum bag poor air-tightness, puncture-resistant intensity, edge exists cold bridge, soon, easily rise bag, insulation life-span of vacuum decay is short etc.Therefore, building heat preservation needs the new A level heat insulating material researching and developing good heat insulating, long service life.
Applicant discloses a series of evacuated panel and preparation method thereof in July, 2013, although solve the contradiction and problems of the aspect such as fire prevention, insulation, application life that existing heat insulating material exists, but owing to directly metal sheet being welded together, so its edge exists obvious cold bridge, its heat-insulating property is made not reach optimum state.
Summary of the invention
technical problem to be solved by this invention is for existing building insulating board, warming plate, the defect that vacuum heat-insulating plate exists, a kind of novel glass solder metal vacuum thermal insulation slab having extract opening and preparation method thereof is provided, this glass solder has the preparation method technique of the metal vacuum thermal insulation slab of extract opening simple, the prepared metal vacuum thermal insulation slab of extract opening that has can overcome existing insulating board, the deficiency of vacuum heat-insulating plate and warming plate, effectively can ensure that glass solder has the tightness of the metal vacuum thermal insulation slab of extract opening, increase the service life, and its intensity and heat insulation can be increased, sound insulation, fireproof performance, also there is good decorative effect simultaneously.
In order to solve the problems of the technologies described above, the invention provides the metal vacuum thermal insulation slab that a kind of glass solder has extract opening, comprise shell, core and vacuum chamber, it is characterized in that described shell is low carbon steel plate or mild steel composite plate, described core is positioned at vacuum chamber for described shell to be provided additional strength, ensures shell planarization under atmospheric pressure, described vacuum chamber is the closed cavity welding edge sealing, under vacuo high temperature sealing by shell at constant-pressure and high-temperature lower-glass and formed, and the coefficient of thermal expansion of described low carbon steel plate and described glass solder matches; Described sealing utilizes solder according to hydraulic seal principle automatic-sealed in a vacuum furnace prefabricated extract opening on shell, and described solder comprises low-temperature metal and solder.
In order to solve the problems of the technologies described above, the invention provides the preparation method that a kind of glass solder has the metal vacuum thermal insulation slab of extract opening, it is characterized in that comprising the following steps:
The first step, has the shape of the metal vacuum thermal insulation slab of extract opening and size to make two pieces of Shell Plates respectively according to the glass solder of required making, it is shaping and make extract opening on one piece of Shell Plate two pieces of Shell Plates to be carried out flanging;
Second step, first by after core drying and moulding, put into the cavity that lower shell plate is formed, at the weld coated glass solder of lower shell plate, again two pieces of Shell Plate consistencies from top to bottom are combined, then send in edge sealing heating furnace, by the heat fused of glass solder, cooling solidification, the edge of two pieces of Shell Plates is hermetic welded together;
3rd step, send into after extract opening place places solder in vacuum drying oven, first vacuum drying oven is warming up to the temperature being conducive to being vented, again vacuum drying oven is evacuated to below 100Pa, then vacuum drying oven is warming up to the temperature of sealing, solder fusing by extract opening self-closed, with stove cooling, solder solidify rear to vacuum chamber realize tightness welding, open vacuum drying oven and obtain the metal vacuum thermal insulation slab that glass solder has extract opening.
Wherein, described glass solder has the metal vacuum thermal insulation slab of extract opening to comprise the various forms of sheet materials such as surface plate, curved slab, bending plate, sketch plate.
Wherein, described glass solder has the metal vacuum thermal insulation slab of extract opening to have connector for installing or groove or hole etc.
Wherein, described shell is low carbon steel plate or composite plate, can have decoration, overcoat above it, as coating, electrodeposited coating, F-C paint and decorative panel etc.;
Further, the preferred ultra thin plate of described shell, with weight reduction and cost;
Further, described shell can be commaterial, also can be two kinds of different materials.
Wherein, described core is inorganic heat insulation material, as glass fiber, pearlife, perlite, vermiculite, aeroge etc.
Wherein, can there be infrared reflective material described core inside as aluminium foil etc., to reduce radiant heat transfer.
Wherein, described core through preliminarily dried, pack, vacuumize after put into described shell again, to reduce shell deflection under atmospheric pressure, to keep the planarization of shell.
Wherein, described vacuum chamber is the air-tight cavity be welded by a piece or two pieces of low carbon steel plates, and the C content of described low carbon steel plate is not more than 0.06%, preferred enamel low carbon steel plate, and thickness is 0.3-3mm, preferred 0.3-1mm.
Wherein, described vacuum chamber can be one to several, and when described vacuum chamber is two, upper and lower two vacuum chambers stack bonding along the diagonal dislocation of lower upper surface, make it form overlap edge, to reduce edge cold bridge impact when described composite evacuated plate is installed.
Wherein, the low carbon steel plate of described vacuum chamber can adopt mirror board, if its surface is senior finish, or its inner surface makes it have extremely low emissivity, as aluminizer etc. through process.
Wherein, the inwall of described vacuum chamber can have coating that is heat insulation, sound insulation; Can have getter in described vacuum chamber, getter is automatic activation under high temperature, high vacuum.
Wherein, described glass solder refers to and utilizes glass solder at high temperature to be welded together by two pieces of low carbon steel plates, commercially available low temperature glass solder selected by described glass solder, and its welding temperature is generally 380-480 DEG C, selects low temperature glass solder to be conducive to reducing costs, improving production capacity etc.; Described glass solder, certain pressure can be applied, namely carry out pressure welding, with make welding and combine more solid and reliable, vacuum chamber and plate face more smooth, and can eliminate because solder thickness is uneven, vacuum chamber surface irregularity can not get core and evenly effectively supports and the edge sealing stress that causes; Described pressure is approximately 0.1MPa, described in the mode of exerting pressure can adopt mechanical compression, air pressure or hydraulic pressure etc.
Wherein, described extract opening can be arranged on surface or the side of vacuum chamber.
Wherein, described extract opening can directly be made in vacuum chamber punching press, also first can make extract opening and be welded on vacuum chamber again.
Wherein, described edge sealing heating furnace or vacuum drying oven are the single-unit furnaces of batch production, or the tunnel kiln that continous way is produced; The edge sealing temperature of described edge sealing heating furnace is 360-500 DEG C, is preferably 380-480 DEG C; The vacuum of described vacuum drying oven is 1-100Pa, is preferably 5-50Pa; The sealing temperature of described vacuum drying oven is 150-450 DEG C, is preferably 280-350 DEG C.
The invention has the beneficial effects as follows:
The present invention replaces metal () to weld with glass solder, coefficient of thermal conductivity due to glass only has 1% of metal even less so can solve the edge cold bridge problem of evacuated panel well, because glass is different with the material of metal so the evacuated panel of glass solder has better sound insulation value; The low carbon steel plate matched with coefficient of thermal expansion and glass solder replaces conventional metal sheet, solves the Welding Problems between glass and metal; An about atmospheric pressure is applied when glass solder, glass solder is made to solidify the sizing of final vacuum chamber in using state, eliminate edge sealing stress, avoid the evacuated panel in use damage that causes because of unbalance stress of brittle glass solder, thus ensure that heat-proof quality and the application life of evacuated panel; Glass solder of the present invention is made up of primarily of metal material the metal vacuum thermal insulation slab of extract opening, and inorganic material selected by core, so have good fireproof performance; Glass solder of the present invention has the metal vacuum thermal insulation slab of extract opening to be composited by multiple material, so not only thickness is thin, lightweight, and has very high mechanical strength; Glass solder of the present invention has the metal vacuum thermal insulation slab of extract opening to adopt normal temperature and pressure lower sealing edge, high-temperature vacuum lower sealing, its manufacture craft is simple, cost of production is low, can mechanization, automation, production in enormous quantities, product can be widely used in interior wall, exterior wall and curtain wall, the consumption that can greatly reduce material and the energy, the weight alleviating building, shortening building cycle; Glass solder of the present invention has the metal vacuum thermal insulation slab of extract opening not only can be applied to new building, and the energy-conservation of existing building and outward appearance transformation can be applied to, not only can wet combining but also can be cladding, can greatly save the engineering time compared with existing heat insulating material, improve heat insulation and soundproof effect; Glass solder of the present invention has the metal vacuum thermal insulation slab of extract opening to make sketch plate, is directly used in the production of refrigerator, refrigerator-freezer, refrigerator carriage, incubator, cold store, frozen products insulated container etc.; High-temperature field can also be used for, as the Surgery therapy etc. of various body of heater.
Accompanying drawing explanation
Fig. 1 is the metal vacuum heat-insulating plate structure schematic diagram that glass solder of the present invention has extract opening.
In figure: 1. shell, 2. core, 3. extract opening, 4. solder, 5. glass solder.
Detailed description of the invention
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.
See accompanying drawing, glass solder is made up of shell 1, core 2 and extract opening 3 the metal vacuum thermal insulation slab of extract opening, and the low carbon steel plate that shell 1 is 0.3-1.0mm by thickness is formed; Core 2 is glass fiber, pearlife, perlite, vermiculite, aeroge etc., preferably core 1 is carried out the process such as drying, plastic bag packaging, forvacuum; The air exhaust nozzle that extract opening 3 is directly stamped out by the upper low carbon steel plate of shell 1 and can form, and place solder 4 in can as tin, zinc, magnesium and low-melting alloy thereof, and solder 4 dissolves and automatically to seal extract opening 3 afterwards.Glass solder has the preparation method of the metal vacuum thermal insulation slab of extract opening as follows: the low carbon steel plate that first cutting two pieces is onesize for making shell 1, and utilize the mode of punching press to two pieces of low carbon steel plates carry out flanging shaping and make extract opening 3; Certain particle size pearlife and perlite etc. after the drying of continous way kiln, load in polybag, after vacuumizing and seal, become the core 2 with less volume and certain shape by next; Again by treated core 2, put into the cavity of lower shell plate, at the weld coated glass solder 5 of lower shell plate, again two pieces of Shell Plate consistencies from top to bottom are combined, then send in edge sealing heating furnace, the edge sealing temperature of edge sealing heating furnace is 400-450 DEG C, the edge of shell 1 is hermetic welded together, complete edge sealing by the heat fused of glass solder 5, cooling solidification; Finally in extract opening 3, place solder 4, one piece or composite plate are in batch sent in vacuum drying oven, be evacuated to below 100Pa, temperature when vacuumizing preferably more than 300 DEG C, to promote the eliminating of vacuum intracavity gas especially moisture, after vacuum reaches, be warming up to sealing temperature again, solder 4 melts extract opening 3 self-closed, lowers the temperature with stove, solder 4 solidifies final vacuum chamber and realizes airtight sealing, opens vacuum drying oven and obtains the metal vacuum thermal insulation slab that glass solder has extract opening; In order to protecting sheathing 1 with play decoration function, fluid sealant is smeared at extract opening 3 place, the surface of shell 1 can brushing F-C paint or sticking decorative board.
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 glass solder has the metal vacuum thermal insulation slab of extract opening, comprise shell, core and vacuum chamber, it is characterized in that described shell is low carbon steel plate or mild steel composite plate, described core is positioned at vacuum chamber for described shell to be provided additional strength, ensures shell planarization under atmospheric pressure, described vacuum chamber is the closed cavity welding edge sealing, under vacuo high temperature sealing by shell at constant-pressure and high-temperature lower-glass and formed, and the coefficient of thermal expansion of described low carbon steel plate and described glass solder matches; Described sealing utilizes solder according to hydraulic seal principle automatic-sealed in a vacuum furnace prefabricated extract opening on shell, and described solder comprises low-temperature metal and solder.
2. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that described glass solder has the metal vacuum thermal insulation slab of extract opening to comprise surface plate, curved slab, bending plate and sketch plate.
3. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that described core is glass fiber, pearlife, perlite, vermiculite or aeroge.
4. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that described core through preliminarily dried, pack, vacuumize after put into described shell again.
5. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that described vacuum chamber has one to several, when described vacuum chamber is two, upper and lower two vacuum chambers stack bonding along the diagonal dislocation of lower upper surface, it is made to form overlap edge, to reduce edge cold bridge impact during installation.
6. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that the inwall of described vacuum chamber can have coating that is heat insulation, sound insulation.
7. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that described glass solder is pressure welding.
8. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that can there be infrared reflective material described core inside as aluminium foil.
9. glass solder as claimed in claim 1 has the metal vacuum thermal insulation slab of extract opening, it is characterized in that there is getter in described vacuum chamber.
10. the glass solder described in any one of claim 1 to 9 has the preparation method of the metal vacuum thermal insulation slab of extract opening, it is characterized in that comprising the following steps:
The first step, has the shape of the metal vacuum thermal insulation slab of extract opening and size to make two pieces of Shell Plates respectively according to the glass solder of required making, it is shaping and make extract opening on one piece of Shell Plate two pieces of Shell Plates to be carried out flanging;
Second step, first by after core drying and moulding, put into the cavity that lower shell plate is formed, at the weld coated glass solder of lower shell plate, again two pieces of Shell Plate consistencies from top to bottom are combined, then send in edge sealing heating furnace, by the heat fused of glass solder, cooling solidification, the edge of two pieces of Shell Plates is hermetic welded together;
3rd step, send into after extract opening place places solder in vacuum drying oven, first vacuum drying oven is warming up to the temperature being conducive to being vented, again vacuum drying oven is evacuated to below 100Pa, then vacuum drying oven is warming up to the temperature of sealing, solder fusing by extract opening self-closed, with stove cooling, solder solidify rear to vacuum chamber realize tightness welding, open vacuum drying oven and obtain the metal vacuum thermal insulation slab that glass solder has extract opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721335.8A CN104746720A (en) | 2013-12-25 | 2013-12-25 | Glass welded metal vacuum insulation board with extraction opening and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721335.8A CN104746720A (en) | 2013-12-25 | 2013-12-25 | Glass welded metal vacuum insulation board with extraction opening and production method thereof |
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| Publication Number | Publication Date |
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| CN104746720A true CN104746720A (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310721335.8A Pending CN104746720A (en) | 2013-12-25 | 2013-12-25 | Glass welded metal vacuum insulation board with extraction opening and production method thereof |
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| CN (1) | CN104746720A (en) |
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- 2013-12-25 CN CN201310721335.8A patent/CN104746720A/en active Pending
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Application publication date: 20150701 |