CN204437581U - Flat VIP with groove and apply the refrigerating cabinet of this VIP - Google Patents
Flat VIP with groove and apply the refrigerating cabinet of this VIP Download PDFInfo
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- CN204437581U CN204437581U CN201420860275.8U CN201420860275U CN204437581U CN 204437581 U CN204437581 U CN 204437581U CN 201420860275 U CN201420860275 U CN 201420860275U CN 204437581 U CN204437581 U CN 204437581U
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Abstract
The utility model provides a kind of flat VIP with groove and applies the refrigerating cabinet of this VIP, comprise: be all that encapsulating film bag inserted by the core of plane by upper and lower side, then the cavity of vacuum pumping device is put into, and the briquetting placed on the upper side or downside of encapsulating film bag for suppressing groove or projection on described core when vacuumizing, then vacuum pumping device closed and implement to vacuumize; Wherein, when vacuumizing, in described cavity, a pressing plate is exerted pressure to a side of described encapsulating film bag, to suppress the briquetting of groove or projection on described core; Complete when vacuumizing, the opening of described encapsulating film bag is sealed; Then, vacuum insulation panel is taken out from described cavity, namely obtains finished product.
Description
Technical field
The utility model relates to a kind of plate type evacuated thermal baffle (VIP) with groove and applies the refrigerating cabinet of this VIP.
Background technique
Vacuum insulation panel (hereinafter referred to as VIP) is widely used in each field of thermal insulation, and the shape of VIP is also changing according to the need of production of reality; Generally include rectangular flat and sketch plate; Rectangular flat is that conventional products is also produced than being easier to, and sketch plate is then need special process.
The mode of production of rectangular flat formula VIP, central layer is put into pre-processed, to be with three edge sealing and opening film bag, vacuumize from opening edge subsequently, finally by opening heat-sealing (namely completing sealing), produce sealing strip respectively in the surrounding of finished product simultaneously, then artificial flanging is carried out to the sealing strip of described surrounding, and use adhesive tape to fix.
Chinese patent literature CN202220946U discloses a kind of Curved vacuum thermal insulation board, it comprises core and aluminum-plastic composite membrane bag, on one side of described core, rule is distributed with convex, core is in plastic-aluminum combinedly to be moulded in bag, and the vacuum insulation panel formed after vacuumizing is changed to normal pressure by negative pressure with residing environment and has an edgewise bend of convex to core.In vacuum, one-sided concavo-convex of core, causes the tension force of film bag both sides inconsistent (being greater than opposite side with the film material tension force of described concavo-convex sides adjacent), and VIP is bent.
But to produce the concavo-convex flat VIP of one-sided band, especially distribute many parallel grooves on a side of flat VIP, and prior art cannot realize.
In addition, in prior art, produce the encapsulating film that VIP uses, be generally clad aluminum foil aluminizer or High barrier PET aluminizer.
Chinese patent application publication No. CN102667298A discloses a kind of vacuum heat insulation material encapsulating film, have and comprise: protective layer, gas barrier and hot welding layer, wherein, it is a kind of to multiple resin that the material of hot welding layer can use containing in following: Low Density Polyethylene, medium density polyethylene, high density polyethylene (HDPE), straight-chain Low Density Polyethylene, cyclic polyolefin, polypropylene, ethylene vinyl acetate, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, or by the polyolefin-based resins such as polyethylene or polypropylene acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, other etc. the acid modified polyolefin system resin of unsaturated carboxylic acid-modified gained, polyester based resin, polystyrene resin, other resin.
The fusing point of above-mentioned hot welding layer is generally 110 ~ 130 DEG C, and the temperature resistant range temperature range of Long-Time Service (can) is generally-50 DEG C to 100 DEG C, and flammable.
The temperature resistant range of hot welding layer determines the temperature resistant range of film material, the temperature resistant range of existing VIP encapsulating film is caused to be limited to-50 DEG C to 100 DEG C, this obviously limits VIP and is applied to extremely cold area or temperature lower than the occasion of-50 DEG C, limits it simultaneously and is applied to temperature higher than the occasion of 100 DEG C; Therefore, how providing the VIP encapsulating film that a kind of temperature resistant range is larger and fire-retardant, is the technical problem that related domain will solve.
On the other hand, China Patent No.: ZL200880122390.2 discloses a kind of vacuum heat insulation material core material, i.e. short chopping core, and the diameter of the glass fibre of employing is 6-13um, length is 4-20mm; It is consisted of multiple nonwovens stacked; This nonwovens at least comprises many glass fibres utilizing continuous filament method to manufacture.In nonwovens, the most of glass fibre in many glass fibres extends on the direction substantially parallel with the surface of nonwovens.
Above-mentioned the deficiencies in the prior art part is: its fiber is straight comparatively thick, length longer (diameter be 6-13um, length be 4-20mm), and fiber is harder; For the vacuum heat-insulating plate (VIP) adopting aluminizer to carry out outsourcing, vacuumize, in actual production or using process, described fiber is easy to pierce through aluminizer; So when producing VIP, the sealing film material of outsourcing does not generally use aluminizer; The foil laminated film that adopts produces VIP more at present, overcomes the problems referred to above; And this results in new problem, owing to containing aluminum layer (AL) and aluminium coated (VMPET) in foil laminated film, and this aluminium lamination thicker (being generally about 7um), cause VIP can produce more serious heat bridge effect in actual application, this will inevitably cause VIP overall thermal conductivity to increase, thus affects energy-saving effect and product quality.
Aluminum layer in foil laminated film is the very thin thin slice formed after repeatedly rolling with highly purified aluminium, and this aluminum layer is excellent thermal conductor, and the purity of VIP Packaging Aluminum Foil is more than 99.5%.
Containing aluminium coated (VMPET) in aluminizer, and not containing aluminum layer (AL), therefore, the heat-conducting effect of aluminizer is far below foil laminated film.
Therefore, how while employing aluminizer carries out VIP encapsulation, avoiding fiber to pierce through aluminizer, is the technical problem that related domain will solve.
Summary of the invention
Technical problem to be solved in the utility model is to provide that a kind of feasibility is good, the flat VIP of the simple one-sided band groove of technique or projection.
In order to solve the problem, the utility model provides a kind of plate type evacuated thermal baffle with groove, and the distribution mode of the groove on described vacuum insulation panel is suitable for matching with the serpentine coil of the vaporizer of refrigerating cabinet; Described vacuum insulation panel is coated with resin layer or coating layer.The production method of the flat VIP of a kind of one-sided band groove or projection, comprise: be all that encapsulating film bag inserted by the core of plane by upper and lower side, then the cavity of vacuum pumping device is put into, and the briquetting placed on the upper side or downside of encapsulating film bag for suppressing groove or projection on described core when vacuumizing, then vacuum pumping device closed and implement to vacuumize; Wherein, when vacuumizing, in described cavity, described briquetting or a pressing plate are exerted pressure to a side of described encapsulating film bag, to suppress described groove or projection by described briquetting on described core; Complete when vacuumizing, the opening of described encapsulating film bag is sealed; Then, vacuum insulation panel is taken out from described cavity, then carry out artificial flanging, namely obtain finished product.
Due in vacuum, briquetting is adopted to suppress groove or projection on described core, encapsulating film material there occurs corresponding modification simultaneously, and therefore the film bag tension force of the vacuum insulation panel both sides of final molding is basically identical, so the vacuum insulation panel produced can not be curled into the VIP of arc; The shape of described groove or projection, size and arrangement mode can be arranged in parallel or matrix pattern distribution, also can select arbitrarily as required.
As the optional mode of execution of one, described core, before inserting encapsulating film bag, adopts mould to extrude described groove or projection.The shape of described briquetting, structure are suitable for and described groove or protruding corresponding, and in vacuum, are mainly used in making encapsulating film material that corresponding modification occur, and film material and described groove or projection are fitted, and prevent encapsulating film material impaired.
Further, the distribution mode of the groove on described vacuum insulation panel is suitable for matching with the serpentine coil of the vaporizer of refrigerating cabinet.
Further, described vacuum insulation panel is coated with resin layer or coating layer (preferred water-borne coating, thickness is 0.1-1mm), to protect the encapsulating film bag of vacuum insulation panel, avoids film bag to be scraped off.
Described briquetting comprises: substrate, what be located at substrate homonymy is the press strip of smooth arc-shaped surface for extruding the compressive plane of described groove.The compressive plane of press strip is cambered surface, can avoid crushing film material.
A kind of refrigerating cabinet applying above-mentioned vacuum insulation panel, it comprises cabinet and is located at the serpentine coil formula vaporizer on the trailing flank of this cabinet, above-mentioned vacuum insulation panel is located between the trailing flank of cabinet and the serpentine coil of described vaporizer, and the groove on described vacuum insulation panel matches with the serpentine coil of the vaporizer of refrigerating cabinet.Described refrigerating cabinet is refrigerator, refrigerator-freezer or cold storage room etc.
Described vacuum heat-insulating plate encapsulating film comprises: protective layer, gas barrier and hot welding layer, and the material of described hot welding layer is ETFE, and its thickness is 15-95 μm.
Described protective layer uses the co-extrusion stretched film (hereinafter referred to as co-extrusion stretched film) nylon system resin and vinyl-vinyl alcohol copolymer and nylon system resin stacked gradually.This co-extrusion stretched film does not use tackiness agent, but by co-extrusion, the stacked nylon system resin with ductility in the both sides of the ethene-vinylalcohol copolymer with gas barrier properties, thus give the feature of its ductility and gas barrier properties.
Gas barrier can use metal foil, or defines the plastic film of thin layer of metal or metallic oxide, or by the material of their multiple combinations.
Above-mentioned core comprises: the glass fibre sheet (i.e. short chopping core) shaping by multilayer laminated employing wet paper manufacturing method, or the glass fiber mat (i.e. dry method glass cotton core material) adopting dry method non-woven fabrics craft shaping, or the middle core that glass fibre sheet is formed with the lamination (namely mixing core) of glass fiber mat; Superfine glass fiber cotton piece material is coated with in the both sides up and down of this middle core; Fiber diameter in described superfine glass fiber cotton piece material is 1-4um, length is 1-5mm.
Described superfine glass fiber cotton piece material employing wet paper manufacturing method is shaping or dry method non-woven fabrics craft is shaping.
The diameter forming the glass fibre of described glass fiber mat is 4-20um, length is 4-15mm.
Preferred as one, described glass fibre sheet adopts the glass chopped silk that diameter is 6-13um, length is the production of 4-20mm fiber elongation method shaping.
Glass fibre layer distributed, major part and top surface being parallel in described glass fibre sheet and glass fiber mat, the glass fibre random distribution in isoplanar, the thickness of this sheet material is even, is beneficial to vacuumize.
As the optional mode of execution of another kind, described glass fibre sheet comprises: the glass fibre cotton that the glass chopped silk that 70-100wt%, diameter are 6-13um, length is 4-20mm, fiber elongation method is produced and 0-30wt%, diameter are 1.0-4um, length is 1-5mm, flame method is produced; Adopt the glass fibre cotton that flame method manufactures, diameter is thin, length is short, therefore the corresponding glass fibre cotton density obtained is comparatively large, and the core material of vacuum heat insulation plate thermal conductivity made is lower, but if the glass fibre cotton adopting separately flame method to produce produces core material of vacuum heat insulation plate, manufacture cost can be caused higher, and making the thermal conductivity of the vacuum heat-insulating plate made be difficult to reach below 0.0025W/m.k, quality is unstable, poor controllability; The glass fibre cotton that the glass chopped silk adopting 70-100wt% fiber elongation method to produce in the utility model and 0-30wt% flame method are produced is as core material of vacuum heat insulation plate raw material, glass fibre cotton proportion is less, in terms of existing technologies, greatly reduce cost of production, improve constant product quality; The core material of vacuum heat insulation plate thermal conductivity produced is at below 0.030W/m.k, and its thermal shield thermal conductivity is low relative to the glass fibre cotton core adopting 100wt% flame method to produce, and heat insulation effect is better; Monolithic core thickness controls under 0.5-5mm(10kpa pressure), density domination is at 80kg/m3-200kg/m3, and compression ratio is slightly larger than the superfine glass fiber cotton core material adopting 100wt% flame method to produce, but can not have large impact to production technology.
As the optional mode of execution of another kind, between adjacent two layers glass fibre sheet, or the plate being provided with the thick silica bisque of 1-15mm between adjacent glass fibre sheet and glass fiber mat or adopting silicon dioxide powder compressing; Silicon dioxide layer or plate and glass fibre used in combination, is beneficial to the effect of heat insulation and combination property that improve core material of vacuum heat insulation plate further.
As further preferred, the most of glass fibre in described glass fiber mat and the top surface being parallel of this glass fiber mat distribute, and are beneficial to vacuumize.
The making method of above-mentioned core, comprises the steps:
(1) cut-off footpath be 6-13um, length be 4-20mm fiber elongation method produce glass chopped silk; Or, get 70-100wt%, diameter be 6-13um, length is 4-20mm, fiber elongation method produce glass chopped silk and 0-30wt%, diameter be 1.0-4um, length be 1-5mm, flame method produce glass fibre cotton mixing;
(2) disperseed by above-mentioned glass fibre, then add water stirring, and send into pond with slurry after stirring and be diluted with water, diluted concentration is to 0.3-1.0wt%;
(3) slurry diluted is sent into breast box, the slurries layering that breast box flows out flows on a forming net, is evenly distributed with negative pressure suction inlet, to dewater under this forming net; Fiber laydown after dehydration on described forming net and thickness evenly, layer distributed and top surface being parallel, form the lamella of desired thickness, namely obtain wet plate;
(4) adopt pressure roller to roll above-mentioned wet plate, make its surfacing, thickness even;
(5) wet plate completing above-mentioned steps (4) is formed glass fibre sheet after dehydration, dry process;
(6) cut-off footpath is 1-4um, length is that the superfine glass fiber of 1-5mm is cotton, and repeats above-mentioned steps (2)-(4) and obtain wet plate, and this wet plate is formed superfine glass fiber cotton piece material after dehydration, dry process;
(7) by core in the middle of stacked for above-mentioned for multilayer glass fibre sheet rear formation; After superfine glass fiber cotton piece material is laid in the both sides up and down of this middle core, carry out cutting, make required core.
Adopt the core that said method is produced, the technique effect had: be beneficial to vacuum heat-insulating plate and vacuumize, to reduce the thermal conductivity of vacuum heat-insulating plate, and can make the thermal conductivity <0.0025W/m.k of the vacuum heat-insulating plate made.Core material of vacuum heat insulation plate moulding process of the present utility model is simple, cost is low, stable and controllable for quality.
Preferred as one, under the pressure condition of 10KPa, the thickness of the glass fibre sheet that described step (5) generates is 0.5-5mm, and the thickness of the superfine glass fiber cotton piece material in described step (5) is 0.2-2mm.The glass chopped filament diameter adopted owing to making central layer is 6-13um, and length is the glass chopped silk that 4-20mm fiber elongation method is produced, so under the pressure condition of 10KPa, described glass fibre sheet blank optimum thickness is 0.5-5mm.
Preferred as one, when in described step (3), forming net dewaters to glass fibre layer, the speed of forming net is 12-30 m/min.Adopt this speed effectively can ensure the wet plate even density produced by forming net, marshalling, integral thickness is relatively uniform, improves core material of vacuum heat insulation plate end product quality.
Preferred as one, in the dilution of described step (2), add the hydroxylated cellulose of the 0.005-0.015% of above-mentioned glass chopped silk gross weight, to reduce electrostatic effect.
Preferred as one, for generating the glass fibre sheet of said structure, the top surface inclination of described forming net is arranged; Be provided with the diversion channel be connected with described breast box above forming net, the base plate of this diversion channel and the top surface being parallel of described forming net, the base plate of diversion channel is evenly distributed with the narrow slit type nozzle vertical with the length direction of described forming net; Described negative pressure suction inlet is oppositely arranged with described narrow slit type nozzle respectively and is distributed in the side, downstream of each narrow slit type nozzle, the fiber be beneficial in slurries is evenly distributed on the end face of described forming net, and makes the surface that fiber fractionation isoplanar distributes, major part is parallel to glass fibre sheet.
As the preferred scheme of one, described forming net is conveyor type, is beneficial to continuous seepage.
As further preferred scheme, the feeding direction of described forming net end face be from bottom to top, be beneficial to fiber laydown on described forming net and thickness evenly, the distribution of layering isoplanar, most of parallel.
A kind of vacuum heat-insulating plate, it comprises above-mentioned core material of vacuum heat insulation plate, and be coated on this core material of vacuum heat insulation plate, for realizing the aluminizer that vacuumizes or foil laminated film, or the bag be made up of above-mentioned aluminizer or foil laminated film.
The utility model has positive effect relative to prior art:
(1) the flat VIP of one-sided band groove of the present utility model or projection, compared with arc VIP, when being applied to the isolation of the cabinet of refrigerating cabinet and vaporizer, flat VIP more easily assembles; And compared with arc VIP, the tension force on encapsulating film bag of the present utility model is less (namely resiliently deformable is less), and then makes air penetrability less, and not cracky, and then improve VIP product quality;
(2) hot welding layer forming VIP encapsulating film is air penetrability the best part in vacuum heat insulation material encapsulating film, and the character of hot welding layer has a significant impact for the long-term heat-shielding performance of vacuum heat insulation material.Hot welding layer in VIP encapsulating film of the present utility model adopts ETFE, relative to prior art, its temperature resistant range is larger, the temperature resistant range of film material can be made larger :-65 ° of C ~+150 ° C, and ETFE can make thin-walled material (its thickness can be 15-95 μm), has the characteristic of high flame retardant, low cigarette simultaneously; Pole is applicable in water, fuel, oil, acid or alkali environment, and the rotproofness of ETFE film is fabulous.ETFE is a kind of tough and tensile material, and various mechanical property reaches good balance---anti-tear draw extremely strong, tensile breaking strength is high, medium hardness, outstanding impact resistance, flexible life-span are long.ETFE is good dielectric substance, and insulating strength is high, and permittivity is 2.6, and specific resistance is high, and dissipation factor is low, is only 0.003.Its low-k, the substantially constant when frequency and temperature variation.The serviceability temperature scope of ETFE is more practical comparatively wide, and steady temperature is set as between-65 ° of C to+150 ° of C usually, and still hard outstanding when ultralow temperature, its brittle temperature is low to moderate-100 ° of C.In addition, ETFE also have passed several strict fire-resistant tests, as IEEE383, and obtains UL94V-0 grade.The physical attribute impact of ETFE on most of chemical substances is little, low to the permeability of common gases and aqueous vapor, is beneficial to the performance of the separation gas moisture improving film material, is therefore beneficial to the integrated quality of raising VIP and extends its life-span; The flame retardant effect of ETFE is better, and the flame retardant property of the compound film material of production is also better;
(3), superfine glass fiber cotton core material is covered in short chopping or dry method glass felt core upper and lower layers, namely a kind of composite core material is constituted, its technique effect obtained is: superfine glass fiber cotton core material due to the diameter of fiber own little, length is short, fiber is softer, be not easy to puncture film bag (namely avoiding the situation that diameter of the prior art is 6-13um, length is 4-20mm glass fibre easily punctures aluminizer bag), so VIP produced by applicable aluminizer; Which avoid short chopping core or dry method Chopped Strand Mat core is large-area contacts with film bag, effectively prevent the risk of fiber puncture film bag; Foil laminated film can certainly be adopted as required to produce VIP;
(4), described composite core material can be suitable for polytype film material and produce VIP; By the arranging scheme of this composite core material, breach the restriction that thick diameter core can only use foil laminated film to produce, the VIP plate of actual demand produced by composite core material film material of can arranging in pairs or groups arbitrarily;
(5), short chopping core of the prior art and dry method Chopped Strand Mat core all more fluffy, in order to promote short chopping and dry method Chopped Strand Mat core performance, Bond can be reduced in process of production as far as possible, so short chopping core and dry method Chopped Strand Mat core easily cause central layer damaged in process of production, short chopping is dropped, not easily pack, the phenomenons such as finished surface out-of-flatness, and adopt superfine glass fiber cotton can effectively address these problems after upper and lower layers parcel.
Accompanying drawing explanation
For making the utility model more clearly be understood, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of the process units of core material of vacuum heat insulation plate;
Fig. 2 is a kind of cross-sectional view of core material of vacuum heat insulation plate, and it is alternately laminated shaping by the glass fiber mat that glass fibre sheet that multilayer employing wet paper manufacturing method is shaping is shaping with adopting dry method non-woven fabrics craft;
Fig. 3 is the another kind of cross-sectional view of core material of vacuum heat insulation plate, it adopts the shaping glass fibre sheet of wet paper manufacturing method by multilayer, adopt the shaping glass fiber mat of dry method non-woven fabrics craft and silica bisque or the plate that adopts silicon dioxide powder compressing alternately laminated shaping;
Fig. 4 is the structural representation of the briquetting in embodiment 1;
Fig. 5 is the A-A sectional structure chart of Fig. 4;
Fig. 6 is the A-A sectional structure chart of the another kind of mode of execution of Fig. 4.
Embodiment
Embodiment 1
The production method of the vacuum insulation panel of the present embodiment, comprise: be all that encapsulating film bag inserted by the core of plane by upper and lower side, then the cavity of vacuum pumping device is put into, and the briquetting placed on the upper side or downside of encapsulating film bag for suppressing groove or projection on described core when vacuumizing, then vacuum pumping device closed and implement to vacuumize; Wherein, when vacuumizing, in described cavity, described briquetting or a pressing plate are exerted pressure (when exerting pressure to a side of described encapsulating film bag, pressing plate is in the back side of described briquetting, or briquetting, pressing plate are in the both sides up and down of encapsulating film bag respectively), to suppress described groove or projection by described briquetting on described core; Complete when vacuumizing, the opening of described encapsulating film bag is sealed; Then, vacuum insulation panel is taken out from described cavity, then carry out artificial flanging, namely obtain finished product.
Due in vacuum, briquetting is adopted to suppress groove or projection on described core, encapsulating film material there occurs corresponding modification simultaneously, and therefore the film bag tension force of the vacuum insulation panel both sides of final molding is basically identical, so the vacuum insulation panel produced can not be curled into the VIP of arc; The shape of described groove or projection, size and arrangement mode can be arranged in parallel or matrix pattern distribution, also can select arbitrarily as required.
As the optional mode of execution of one, described core can, before inserting encapsulating film bag, adopt mould to extrude described groove or projection.The shape of described briquetting, structure are suitable for and described groove or protruding corresponding, and in vacuum, are mainly used in making encapsulating film material that corresponding modification occur, and film material and described groove or projection are fitted.
As Fig. 4-6, described briquetting comprises: substrate, what be located at substrate homonymy is the press strip of smooth arc-shaped surface for extruding the compressive plane of described groove.The compressive plane of press strip is cambered surface, can avoid crushing film material.
Embodiment 2
On the basis of embodiment 1, there is following modification in the production method of the vacuum insulation panel of the present embodiment:
The production method of the vacuum insulation panel of the present embodiment comprises: be all that encapsulating film bag inserted by the core of plane by upper and lower side, and the cavity then putting into vacuum pumping device is implemented to vacuumize, and is then sealed by the opening of described encapsulating film bag; Then, the upper side or downside of encapsulating film bag are placed the briquetting for suppressing groove or projection on described core when vacuumizing, described briquetting or a pressing plate are exerted pressure to a side of described encapsulating film bag, to suppress described groove or projection by described briquetting on described core; Then, vacuum insulation panel is taken out from described cavity, then carry out artificial flanging, namely obtain finished product.
As another kind of modification, after the opening of described encapsulating film bag is sealed, vacuum insulation panel is taken out from described cavity, then puts into the cavity of another vacuum pumping device and implement to vacuumize, then on described core, suppressing described groove or projection by described briquetting; Then, vacuum insulation panel is taken out from described cavity, then carry out artificial flanging, namely obtain finished product.
Embodiment 3
The vacuum heat-insulating plate encapsulating film of above-described embodiment 1 or 2, have the advantages that temperature resistant range is larger and fire-retardant, it comprises: protective layer, gas barrier and hot welding layer, and described hot welding layer is ETFE material layer, and its thickness is 15-95 μm.
Described protective layer uses the co-extrusion stretched film (hereinafter referred to as co-extrusion stretched film) nylon system resin and vinyl-vinyl alcohol copolymer and nylon system resin stacked gradually.This co-extrusion stretched film does not use tackiness agent, but by co-extrusion, the stacked nylon system resin with ductility in the both sides of the ethene-vinylalcohol copolymer with gas barrier properties, thus give the feature of its ductility and gas barrier properties.
Gas barrier can use metal foil, or defines the plastic film of thin layer of metal or metallic oxide, or by the material of their multiple combinations.
The hot welding layer forming vacuum heat insulation material encapsulating film of the present utility model is air penetrability the best part in vacuum heat insulation material encapsulating film, and the character of hot welding layer has a significant impact for the long-term heat-shielding performance of vacuum heat insulation material.Consider the stability sealing quality in reduced pressure sealing operation or the problem suppressing to be invaded by heat-fused portion end face gas, the preferred 15-95 μm of thickness of hot welding layer.When the thickness of hot welding layer is lower than 15 μm, be difficult to fully to obtain the Adhesion force that thermal fusion welding brings, and more than 95 μm, then cost raises or gas is invaded by the end of hot welding layer, and degree of vacuum is reduced, therefore not preferred.
The laminating method forming the protective layer of vacuum heat insulation material encapsulating film of the present utility model, gas barrier and each layer of hot welding layer can adopt known method, such as, can adopt: the method using the dry lamination of biliquid curing type carbamate system tackiness agent etc., extrusion coated, heat lamination etc.As required, arbitrary layer can also apply binder course (anchor coat) or printing color layer, undercoat, external coating etc.
The gas barrier used in vacuum heat insulation material encapsulating film of the present utility model can use metal foil, or defines the plastic film of thin layer of metal or metallic oxide, or by the material of their multiple combinations.
Consider from the various angle such as gas barrier properties or Economy, metal foil can use known aluminium foil especially ideally.The preferred 5-50 μm of thickness of aluminium foil, further preferred 5-30 μm.Usual aluminium foil is thinning, and pin hole easily increases, and thickening then heat leak increases, and therefore heat-shielding performance is deteriorated, not preferably.
The plastic film defining the thin layer of metal or metallic oxide is such as on PETG film or EVOH film, forms the thin layer of the single or multiple lift containing the metal such as aluminium or the metallic oxide such as silica, aluminium oxide (separately or their mixture).
With define metal or metallic oxide thin layer plastic film compared with, gas barrier of the present utility model preferably uses metal foil, particularly aluminium foil.
The manufacture method of the vacuum heat insulation material using vacuum heat insulation material encapsulating film of the present utility model to obtain can adopt known method, such as by thermal fusion welding between the hot welding layer of vacuum heat insulation material encapsulating film, be made into bag, fill core, then the air in bag is discharged, form vacuum state, by opening portion thermal fusion welding, can vacuum heat insulation material be obtained thus.When making the bag of filling core, two panels film can be combined, between arbitrary three limits are by hot welding layer, carry out thermal fusion welding, also a slice film can be folded, thermal fusion welding between arbitrary both sides are by hot welding layer.
Core can use known material, such as, be preferably selected from least one in glass wool, glass fibre, alumina fibre, silica-alumina fibre, silicon dioxide fibre, silicon carbide fiber, asbestos, powdery polyurethane, silica, polystyrene, calcium silicate or polyurethane foaming body.
Embodiment 4
As Fig. 2, the core of above-described embodiment 1 or 2 or 3 comprises by the shaping glass fibre sheet 8(of 10 to the 30 employing wet paper manufacturing method folded layer by layer and short chopping core) the middle core that forms; At least one deck superfine glass fiber cotton piece material 9 is coated with completely in the both sides up and down of this middle core; Fiber diameter in described superfine glass fiber cotton piece material 9 is 1-4um, length is 1-5mm, the thermal conductivity≤0.0025W/m.k of the vacuum heat-insulating plate be made up of this core.This core can adopt aluminizer to carry out encapsulating and fiber can be avoided to pierce through aluminizer.
As a kind of variable mode of execution, described middle core is located in the bag be made up of above-mentioned superfine glass fiber cotton piece material, or above-mentioned superfine glass fiber cotton piece material 9 wraps up the edge of described middle core, with avoid the edge of glass fibre sheet 8 directly and aluminizer or foil laminated film come in contact.
Described glass fibre sheet is 6-13um by adopting diameter, and length is that the glass chopped silk that 4-20mm fiber elongation method is produced is shaping through wet paper manufacturing method.
The making method of above-mentioned core material of vacuum heat insulation plate, the concrete steps of this making method are as follows:
(A) cut-off footpath be 6-13um, length be 4-20mm fiber elongation method produce glass chopped silk;
(B) disperseed by above-mentioned glass fibre, then add water stirring, sends into pond with slurry and be diluted with water after stirring, and diluted concentration to 0.8wt%, and adds the hydroxylated cellulose of 0.012% of above-mentioned two kinds of glass fibre gross weights, to reduce electrostatic effect;
(C) glass fiber slurry diluted feeding is stored stock tank;
(D) slurry stored in stock tank is sent into breast box 2, the slurries 3 that breast box 2 flows out flow on forming net 1 by multilayer nozzle 4 layering, the blower fan suction inlet (i.e. negative pressure suction inlet 5) corresponding with nozzle 4 is housed below forming net 1 and carries out batch vacuum dehydration.Fiber laydown after dehydration is formed evenly, arranges orderly lamella on forming net 1, namely makes glass chopped silk wet plate; In this step during forming net 1 pair of glass fiber slurry dehydration, the speed of forming net 1 is 20-25 m/min;
(E) adopt pressure roller 6 pairs of glass fibre wet plates to carry out transverse direction to roll, make surfacing, the thickness of glass fibre wet plate is adjusted simultaneously, make glass fibre wet plate thickness be adjusted to 1.5mm;
(F) the glass fibre wet plate completing shaping is phoresied in the line belt of negative pressure of vacuum by glass fibre wet plate 60% moisture removal, make glass fibre wet plate water content control below 40%;
(G) then the glass fibre wet plate removing moisture is sent into baking and curing in roasting chamber 8, in roasting chamber 8, temperature controls at 280 degrees Celsius, and baking time is 15 minutes; Toast rear formation fiber glass core sheet material;
(H) cut-off footpath is 1-4um, length is that the superfine glass fiber of 1-5mm is cotton, and repeats above-mentioned steps (B)-(F) and obtain wet plate, and this wet plate is sent into baking and curing in roasting chamber 8, and in roasting chamber 8, temperature controls at 280 degrees Celsius, and baking time is 15 minutes; Toast rear formation superfine glass fiber cotton piece material;
(I) according to production requirement by stacked for glass fibre sheet described in multilayer and form in the middle of core; After superfine glass fiber cotton piece material is laid in the both sides up and down of this middle core, carry out cutting, cut into 600mm × 600mm, namely obtain core material of vacuum heat insulation plate finished product.
Fig. 1, the top surface inclination of described forming net 1 is arranged; Be provided with the diversion channel 7 be connected with described breast box 2 above forming net 1, the base plate of this diversion channel 7 and the top surface being parallel of described forming net 1, the base plate of diversion channel 7 is evenly distributed with the narrow slit type nozzle 4 that the length direction of multiple and described forming net 1 is vertical; Each negative pressure suction inlet 5 is oppositely arranged with described narrow slit type nozzle 4 respectively and is distributed in the side, downstream of each narrow slit type nozzle 4, and the fiber be beneficial in slurries is evenly distributed on the end face of described forming net.The width of narrow slit type nozzle 4 is 1-8mm.
Described forming net 1 is conveyor type, is beneficial to continuous seepage; The feeding direction of forming net 1 end face is from bottom to top, be beneficial to fiber laydown on described forming net and thickness evenly, the top surface being parallel of layer distributed, major part and glass fibre sheet.
Alternatively, in described step (I), between adjacent two layers glass fibre sheet 8, or the plate 10 being provided with the thick silica bisque of 10mm between adjacent glass fibre sheet 8 and superfine glass fiber cotton piece material 9 or adopting silicon dioxide powder compressing.
Embodiment 5
On the basis of embodiment 4, the core material of vacuum heat insulation plate of this example has following modification:
Described middle core is by adopting laminated glass fibre sheet material shaping through wet paper manufacturing method after glass chopped silk and glass fibre cotton Homogeneous phase mixing, the single-layer glass fiber felt adopting dry method non-woven fabrics craft shaping with at least one deck is alternately laminated shaping, then described superfine glass fiber cotton piece material is all laid in the upper and lower both sides of middle core, the thermal conductivity≤0.0025W/m.k of the vacuum heat-insulating plate be made up of this core.
Embodiment 6
On the basis of embodiment 4, the core material of vacuum heat insulation plate of this example has following modification:
The middle core of the core material of vacuum heat insulation plate of this example is formed by adopting the shaping glass fiber mat of dry method non-woven fabrics craft, then described superfine glass fiber cotton piece material is all laid in these upper and lower both sides of middle core, the thermal conductivity≤0.0030W/m.k of the vacuum heat-insulating plate be made up of this core.
Above-mentioned glass fiber mat adopts centrifugal injection method (abbreviation centrifuge method) to produce glass microfiber technique; Centrifuge method is produced glass microfiber its production technology and is comprised: raw material system, found system, fiberizing system, combustion gas mixing supply system etc.Raw material sends into glass melter according to after proportioning mixing, and the glass liquid melted flows out through the bushing of material road end, enters centrifuge.Under the centrifuge of High Rotation Speed drives, nearly ten thousand strands of glass threads that centrifuge sidewall throws away, by further drawing-off, the fiber cutting into certain length under the high temperature and high speed flame that firing chamber produces.First this technique be throw away initial glass thread in the hole of spinning head perisporium, is then that the high temperature and high speed flame that firing chamber produces carries out succeeding stretch to glass thread.
Embodiment 7
A kind of vacuum heat-insulating plate, it comprises the described core material of vacuum heat insulation plate of one of above-described embodiment 3-5, and be coated on this core material of vacuum heat insulation plate, for realizing the aluminizer that vacuumizes or foil laminated film, or the bag for vacuumizing be made up of above-mentioned aluminizer or foil laminated film.
That described aluminizer comprises about 2 to 5 layers laminations, that 12um is thick polyester aluminium coated (VMPET), and be in the ETFE layer bottom each polyester aluminium coated (VMPET), 50um is thick.
Described foil laminated film comprises successively the nylon layer (15um) of up and down lamination, polyester aluminium coated (12um), aluminum layer (7um) and ETFE layer (50um).
Embodiment 8
The refrigerating cabinet of the vacuum insulation panel of one of application the various embodiments described above, it comprises cabinet and is located at the serpentine coil formula vaporizer on the trailing flank of this cabinet, above-mentioned vacuum insulation panel is located between the trailing flank of cabinet and the serpentine coil of described vaporizer, and the groove on described vacuum insulation panel matches with the serpentine coil of the vaporizer of refrigerating cabinet.Described refrigerating cabinet is refrigerator, refrigerator-freezer or cold storage room etc.
Described vacuum insulation panel is coated with resin layer or coating layer (preferred water-borne coating, thickness is 0.1-1mm), to protect the encapsulating film bag of vacuum insulation panel, avoids film bag to be scraped off.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And these belong to spirit institute's apparent change of extending out of the present utility model or change and are still among protection domain of the present utility model.
Claims (10)
1. one kind
flat with groovevacuum insulation panel, is characterized in that: the distribution mode of the groove on described vacuum insulation panel is suitable for matching with the serpentine coil of the vaporizer of refrigerating cabinet; Described vacuum insulation panel is coated with resin layer or coating layer.
2. vacuum insulation panel according to claim 1, is characterized in that: the encapsulating film that described vacuum insulation panel adopts comprises: protective layer, gas barrier and hot welding layer.
3. vacuum insulation panel according to claim 2, is characterized in that: the thickness of described hot welding layer is 15-95 μm.
4. according to the vacuum insulation panel one of claim 1-3 Suo Shu, it is characterized in that: the core of described vacuum heat-insulating plate comprises: the glass fibre sheet shaping by multilayer laminated employing wet paper manufacturing method.
5. vacuum insulation panel as claimed in claim 4, is characterized in that: described glass fibre sheet comprises the glass chopped silk that diameter is 6-13um, length is the production of 4-20mm fiber elongation method;
The diameter forming the glass fibre of described glass fiber mat is 4-20um, length is 4-15mm.
6. vacuum insulation panel as claimed in claim 4, is characterized in that: between adjacent two layers glass fibre sheet, or the plate being provided with silica bisque between adjacent glass fibre sheet and glass fiber mat or adopting silicon dioxide powder compressing.
7. apply the refrigerating cabinet of the described vacuum insulation panel of one of the claims 1-3 for one kind, it is characterized in that comprising: cabinet and the serpentine coil formula vaporizer be located on the trailing flank of this cabinet, above-mentioned vacuum insulation panel is located between the trailing flank of cabinet and the serpentine coil of described vaporizer, and the groove on described vacuum insulation panel matches with the serpentine coil of the vaporizer of refrigerating cabinet.
8. apply the refrigerating cabinet of the vacuum insulation panel described in the claims 4 for one kind, it is characterized in that comprising: cabinet and the serpentine coil formula vaporizer be located on the trailing flank of this cabinet, above-mentioned vacuum insulation panel is located between the trailing flank of cabinet and the serpentine coil of described vaporizer, and the groove on described vacuum insulation panel matches with the serpentine coil of the vaporizer of refrigerating cabinet.
9. apply the refrigerating cabinet of the vacuum insulation panel described in the claims 5 for one kind, it is characterized in that comprising: cabinet and the serpentine coil formula vaporizer be located on the trailing flank of this cabinet, above-mentioned vacuum insulation panel is located between the trailing flank of cabinet and the serpentine coil of described vaporizer, and the groove on described vacuum insulation panel matches with the serpentine coil of the vaporizer of refrigerating cabinet.
10. apply the refrigerating cabinet of the vacuum insulation panel described in the claims 6 for one kind, it is characterized in that comprising: cabinet and the serpentine coil formula vaporizer be located on the trailing flank of this cabinet, above-mentioned vacuum insulation panel is located between the trailing flank of cabinet and the serpentine coil of described vaporizer, and the groove on described vacuum insulation panel matches with the serpentine coil of the vaporizer of refrigerating cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860275.8U CN204437581U (en) | 2014-02-26 | 2014-12-30 | Flat VIP with groove and apply the refrigerating cabinet of this VIP |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014200836220 | 2014-02-26 | ||
| CN201420083622 | 2014-02-26 | ||
| CN201420860275.8U CN204437581U (en) | 2014-02-26 | 2014-12-30 | Flat VIP with groove and apply the refrigerating cabinet of this VIP |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204437581U true CN204437581U (en) | 2015-07-01 |
Family
ID=53605448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420860275.8U Active CN204437581U (en) | 2014-02-26 | 2014-12-30 | Flat VIP with groove and apply the refrigerating cabinet of this VIP |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204437581U (en) |
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2014
- 2014-12-30 CN CN201420860275.8U patent/CN204437581U/en active Active
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| Date | Code | Title | Description |
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| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU SANYOU D + VIPS INSULATING MATERIALS MAN Free format text: FORMER OWNER: MI YUEQI Effective date: 20150825 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150825 Address after: 213000 Jiangsu city of Changzhou province Wujin fruit Road Economic Development Zone No. 10 Patentee after: CHANGZHOU SANYOU DIOR INSULATION MATERIALS MFG CO., LTD. Address before: 213000, No. 10, fruit Road, Wujin Economic Development Zone, Jiangsu, Changzhou Patentee before: Mi Yueqi |
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| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No. 10, fruit Road, Wujin Economic Development Zone, Jiangsu, Changzhou, China Patentee after: Jiangsu Shanyou Diao Energy Saving New Material Co.,Ltd. Address before: 213000 No. 10, fruit Road, Wujin Economic Development Zone, Jiangsu, Changzhou, China Patentee before: CHANGZHOU SANYOU DIOR INSULATION MATERIALS MFG Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |