CN104746755A - Metal vacuum composite insulation panel with sealing strips and mounting holes and manufacturing method thereof - Google Patents

Abstract

A metal vacuum composite insulation panel with sealing strips and mounting holes comprises a housing, a core material, a core plate and a vacuum chamber and is characterized in that the mounting holes are combined with pumping holes, the housing is a low-carbon steel plate, the core material and the core plate are arranged in the vacuum chamber, the core plate and/or the core material provide the housing with additional strength to ensure the smoothness of the housing at atmospheric pressure, the vacuum chamber is a closed chamber formed by the housing subjected to glass soldering edge sealing at atmospheric pressure and high temperature and high-temperature opening sealing in vacuum, welding portions of the edge of the low-carbon steel plate are provided with the sealing strips, the coefficient of thermal expansion of the low-carbon steel plate is matched with that of glass solder, and the opening sealing is the automatic sealing of the pumping holes preformed in the housing with low-temperature solder in a vacuum furnace according to the principle of liquid seal. A manufacturing method of the metal vacuum composite insulation panel with the sealing strips and the mounting holes is simple in process. The manufactured metal vacuum composite insulation panel can overcome the deficiencies of existing insulation boards and vacuum insulation panels and the strength, thermal insulation, sound insulation and fireproof performance and decorative functions can be improved.

Description

Metal vacuum composite heat-insulating shield having weather strip and installing hole and preparation method thereof

Technical field

The present invention relates to vacuum heat-insulating plate, particularly relate to a kind of metal vacuum composite heat-insulating shield having weather strip and installing hole 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.

Evacuated panel can substitute existing warming plate and be applied to and require heat insulation and place that is sound insulation, and some installation sites need punching on warming plate to install, and evacuated panel obviously cannot punch when mounted thereon, otherwise can destroy its vacuum.

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 metal vacuum composite heat-insulating shield having weather strip and installing hole and preparation method thereof is provided, the preparation method technique of this metal vacuum composite heat-insulating shield is simple, prepared metal vacuum composite heat-insulating shield can overcome existing insulating board, the deficiency of vacuum heat-insulating plate and warming plate, effectively can ensure the tightness of metal vacuum composite thermal insulating plate, 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 a kind of metal vacuum composite heat-insulating shield having weather strip and installing hole, comprise shell, core, central layer and vacuum chamber, it is characterized in that installing hole and extract opening unite two into one, described installing hole is through whole composite plate, described shell is low carbon steel plate or mild steel composite plate, described core and central layer are positioned at vacuum chamber, described central layer and or core provide additional strength for described shell, ensure shell planarization under atmospheric pressure, described vacuum chamber welds edge sealing by shell at constant-pressure and high-temperature lower-glass, high temperature seals and the closed cavity of formation under vacuo, the edge weld of described low carbon steel plate has weather strip, 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 a kind of preparation method having the metal vacuum composite heat-insulating shield of weather strip and installing hole, it is characterized in that comprising the following steps:

The first step, the have shape of the metal vacuum composite heat-insulating shield of weather strip and installing hole and size according to required making make two pieces of Shell Plates, one piece of central layer and core respectively, two pieces of Shell Plates for the formation of vacuum chamber are carried out flanging shaping, edge weld make weather strip, and make extract opening, fabrication and installation hole on each block of plate, carries out drying or forming processes to core;

Second step, core and central layer are 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 the metal vacuum composite heat-insulating shield that vacuum drying oven obtains weather strip and installing hole.

Wherein, the metal vacuum composite heat-insulating shield of weather strip and installing hole is had to comprise the various forms of sheet materials such as surface plate, curved slab, bending plate, sketch plate described in.

Wherein, the metal vacuum composite heat-insulating shield of weather strip and installing hole is had can also to have connector for installing or groove or hole etc. described in.

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 vacuum composite 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, the edge weld of described low carbon steel plate has weather strip, and described weather strip is made up of glass or metal etc.;

Further, when described weather strip is made up of glass, preferably cryogenic glass powder is produced on described low carbon steel plate by modes such as printing, printing, sprayings and forms through high temperature sintering, can carry out separately sintering, also can sintering together with glass solder; The fusion temperature of described cryogenic glass powder is higher than the welding temperature of described glass solder;

Further, can be the metal sheet, the bar that are welded on separately on described low carbon steel plate when described weather strip is metal, also can be described low carbon steel plate flanging; Can only be connected with one piece of low carbon steel plate when described weather strip is metal sheet, bar, cold bridge can not be formed in described vacuum chamber;

Further, described weather strip forms an airtight bar frame at the weld of described low carbon steel plate, described weather strip has two airtight bar frames at least at the edge weld of lower low carbon steel plate of the described vacuum chamber of composition, described glass solder is positioned in the region that described two airtight bar frames surround, described weather strip has an airtight bar frame at least at the edge weld of upper low carbon steel plate of the described vacuum chamber of composition, and the weather strip of described upper low carbon steel plate can insert between two weather strips of described lower low carbon steel plate.

Wherein, described central layer is metal sheet, glass plate, ceramic wafer or resistant to elevated temperatures high polymer plate.

Wherein, described central layer is that mirror board or its surface are coated with low-radiation film.

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 pressure welding is carried out, with make welding and combine more solid and reliable, vacuum chamber and plate face more smooth, and can eliminate because of the edge sealing stress that solder thickness is uneven, vacuum chamber surface irregularity can not get core and central layer evenly effectively supports and 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 or installing hole have one to several.

Wherein, described extract opening can directly be pressed in shell upper punch, also first can make extract opening and be welded on shell 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 adds weather strip at the weld of glass solder, weather strip not only can limit the rear random flowing of glass solder fusing, make edge sealing neatly good-looking, prevent the solder skip phenomenon caused because glass solder runs off, the qualification rate improving product, and the plane-welding of glass solder can be become three-dimensional welding, make welding more firmly, reliably, the tightness of vacuum chamber is fine, the longer service life of evacuated panel; 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; Metal vacuum composite heat-insulating shield forms primarily of metal material, and inorganic material selected by core, so have good fireproof performance; Metal vacuum composite heat-insulating shield is composited by multiple material, so not only thickness is thin, lightweight, and has very high mechanical strength; Its shell of metal vacuum composite heat-insulating shield makes it keep planarization and slickness at atmosheric pressure by the enhancing of central layer, and can increase its mechanical strength; Metal vacuum composite heat-insulating shield adopts normal temperature and pressure lower sealing edge, high-temperature vacuum lower sealing, installing hole and extract opening unite two into one, 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; Metal vacuum composite heat-insulating shield not only can be applied to new building, and the energy-conservation of existing building and outward appearance transformation can be applied to, installing hole can have one to several, 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; Metal vacuum composite heat-insulating shield can also 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 composite heat-insulating shield structural representation having weather strip and installing hole of the present invention.

In figure: 1. shell, 2. core, 3. central layer, 4. extract opening and installing hole, 5. solder, 6. glass solder, 7. weather strip.

Detailed description of the invention

See accompanying drawing, be made up of shell 1, core 2 and central layer 3 the metal vacuum composite heat-insulating shield of weather strip and installing hole, 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; Central layer 3 is metal sheet, glass plate, ceramic wafer or resistant to elevated temperatures high polymer plate, and the armorplate glass of preferred 3-5mm or the aluminium alloy plate of 1-2mm or high-temperature resistance plastice plate, be placed directly in vacuum chamber; Metal annular groove on the lower low carbon steel plate of the air exhaust nozzle that extract opening 4 is directly stamped out by the upper low carbon steel plate of shell 1 and shell 1 forms, place solder 5 in metal annular groove as tin, zinc, magnesium and low-melting alloy thereof, solder 5 dissolves and automatically to seal extract opening 4 afterwards; Installing hole 4 and the same hole of air exhaust nozzle, through whole metal vacuum composite heat-insulating shield.There is the preparation method of the metal vacuum composite heat-insulating shield of weather strip and installing hole as follows: the low carbon steel plate that first cutting two pieces is onesize is 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 4, be that raw material is printed on the edge weld of low carbon steel plate weather strip 7 by the mode of printing or spray with cryogenic glass powder, then produce one piece of more smaller armorplate glass as central layer 3 and precast installing hole 4; 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 treated core 2 and central layer 3 are put into the cavity of lower shell plate, at the weld coated glass solder 6 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, by the heat fused of glass solder 6, cooling solidification, the edge of shell 1 is hermetic welded together, complete edge sealing; Finally in extract opening 4, place solder 5, composite plate is 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, then is warming up to sealing temperature, solder 5 melts extract opening 4 self-closed, with stove cooling, solder 5 solidifies final vacuum chamber and realizes airtight sealing, opens the metal vacuum composite heat-insulating shield that vacuum drying oven obtains weather strip and installing hole; In order to protecting sheathing 1 with play decoration function, smear fluid sealant in installing hole 4 and install protective casing additional, 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. one kind has the metal vacuum composite heat-insulating shield of weather strip and installing hole, comprise shell, core, central layer and vacuum chamber, it is characterized in that installing hole and extract opening unite two into one, described installing hole is through whole composite plate, described shell is low carbon steel plate or mild steel composite plate, described core and central layer are positioned at vacuum chamber, described central layer and or core provide additional strength for described shell, ensure shell planarization under atmospheric pressure, described vacuum chamber welds edge sealing by shell at constant-pressure and high-temperature lower-glass, high temperature seals and the closed cavity of formation under vacuo, the edge weld of described low carbon steel plate has weather strip, 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. there is the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, described in it is characterized in that, have the metal vacuum composite heat-insulating shield of weather strip and installing hole to comprise surface plate, curved slab, bending plate and sketch plate.

3. there is the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, it is characterized in that described core is glass fiber, pearlife, perlite, vermiculite or aeroge.

4. have the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, it is characterized in that described core through preliminarily dried, pack, vacuumize after put into described shell again.

5. there is the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, 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. there is the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, it is characterized in that described central layer is metal sheet, glass plate, ceramic wafer or resistant to elevated temperatures high polymer plate.

7. there is the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, it is characterized in that described central layer is that mirror board or its surface are coated with low-radiation film.

8. there is the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, it is characterized in that described glass solder is pressure welding.

9. there is the metal vacuum composite heat-insulating shield of weather strip and installing hole as claimed in claim 1, it is characterized in that there is getter in described vacuum chamber.

10. the preparation method having the metal vacuum composite heat-insulating shield of weather strip and installing hole described in any one of claim 1 to 9, is characterized in that comprising the following steps:

The first step, the have shape of the metal vacuum composite heat-insulating shield of weather strip and installing hole and size according to required making make two pieces of Shell Plates, one piece of central layer and core respectively, two pieces of Shell Plates for the formation of vacuum chamber are carried out flanging shaping, edge weld make weather strip, and make extract opening, fabrication and installation hole on each block of plate, carries out drying or forming processes to core;

Second step, core and central layer are 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 the metal vacuum composite heat-insulating shield that vacuum drying oven obtains weather strip and installing hole.