A kind of outer wall flexible photovoltaic decoration wall material and preparation method thereof
Technical field
The present invention relates to photoelectricity building field, be specifically related to a kind of outer wall flexible photovoltaic decoration wall material and preparation method thereof, described outsideWall flexible photovoltaic decoration wall material has photovoltaic generation, fire-proof and water-proof damp proof insulation concurrently, strengthens the multiple use functions such as cracking resistance, building decoration,Be applied to the photoelectricity building of newly-built and existing building reducing energy consumption, realize and build the energy-efficient and required electric power of generating power for their own use.
Background technology
Building a harmonious society, realize social development has become the basic state of China's Development of Morden with the harmony between natural environmentPlan. Seriously deficient at global resources, the energy, under the severe situation that environment, weather go from bad to worse, China mainly relies on biography at presentProduction of energy and the consumption structure of the fossil fuel of system, seem to be difficult to continue health, the coordination that remains economic, social and can holdSupervention exhibition, therefore development is clean, green regenerative energy sources and relevant system integration technology are working as of energy industry development efficientlyBeing engaged in anxious, is also the unique selection that solves resource, the energy, natural environment and climate problem. At the World Developed Countries such as Europe, the United States, day,The core of energy policy is that the green continuable, competitive and safety supply of development including solar energy can at presentThe renewable sources of energy, progressively to reduce the ratio of the fossil fuels such as coal, oil, natural gas, the regenerative resources such as the solar energy of China,Resource is very abundant, although through some exploitations, integral level is still very low, in development speed and level far below mostlyNumber developed country.
China is wideling popularize the work of BIPV, but this work also only only limits to the generating of solar energy house top at present,Account for the long-pending external wall over half of building surface and but do not obtain effective exploitation, can not meet market so far away to photovoltaic generationActive demand and building photovoltaic generation scale and benefit. The reason that causes the exploitation of external wall photovoltaic generation to lag behind mainly contains ChinaSeveral aspects such as the limitation of the feature of building and traditional photoelectricity building. Current China's building town and country present following feature: oneThat ratio high-rise, high-rise building obviously increases; The 2nd, adopt in a large number low-intensity, inflammable organic the exterior wall external insulationMaterial; The 3rd, require strict all the more to waterproof fireproofing, cracking resistance, slip-off preventing and the aging-resistant of insulation and ornament materials; The 4th,The combination of photovoltaic cell component and building exterior wall face also only limits to the demonstration projects such as building glass curtain wall, its complex structure, and cost is highExpensive, be difficult to large area and implement.
Part Study person has attempted to develop a kind of photovoltaic generation product used for building exterior wall that is applicable to, and China Patent No. isA kind of solar energy power generating exterior wall finish plate and Side fascia are disclosed in the utility model patent description of CN201354501Y;China Patent No. is in the utility model patent description of CN202263950U, to disclose one to have external wall or finialThe photovoltaic power-generating composite board of function. In above-mentioned two patents, in photovoltaic power-generating composite board, all adopt as the substrate of photovoltaic cell bracketBe the hard plate materials such as metal, cement, plastics, deformation modulus and metope organic insulation material are inconsistent, very easily produce because of protectThe crack that adiabator and the inhomogeneous deformation of exterior wall photovoltaic panel produce.
China Patent No. is to disclose a kind of solar energy ceramic tile in the patent of invention description of CN200720111588.3. Chinese patentNumber can power generation solar ceramic tile for disclosing one in the utility model patent description of CN201738511U, above two inventionsThe form that all adopts metal mechanical erection, complex process is loaded down with trivial details, and needs to adopt expensive curtain skeleton.
Exploitation meets the requirement of external thermal insulation system system, have flexible light weight, fire-proof and water-proof, safe and reliable, strengthen anticracking,Photovoltaic generation, building decoration several functions, and can batch production, standardized production, quality controllable flexible photovoltaic finishing material toolSignificant.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of outer wall flexible photovoltaic decoration wall material, and it has photovoltaic generation concurrently, fire prevention is anti-The multiple use functions such as water, enhancing cracking resistance, building decoration.
A kind of outer wall flexible photovoltaic decoration wall material, is made up of flexible substrate and photovoltaic decorative layer two parts, and described flexible substrate is layerShape structure, comprises from the bottom to top successively: separation layer, gum layer, lower flame-retardant polymer cement sand bed, high-ductility glass strengthen resistanceCombustion nonwoven tire base and upper flame-retardant polymer cement sand bed, five-layer structure is fixed to be integrated.
Described flexible substrate comprises gum layer and separation layer, when construction and installation, only need take off flexible photovoltaic decoration wall material bottom everyFrom film, wall material directly can be sticked on wall face.
Outer wall flexible photovoltaic decoration wall material of the present invention, wherein said photovoltaic decorative layer comprises fexible film from the inside to the outside successivelyBattery component, rete and dope layer.
Outer wall flexible photovoltaic decoration wall material of the present invention, wherein said upper flame-retardant polymer cement sand bed and lower fire-retardant polymerizationThing cement mortar layer thickness is 1.5mm~4mm, and forms by the raw material of following weight portion: general silicon 42.5 cement 12~17Part, 40~45 parts of quartz sands, at least 18~23 parts of Silicone acrylic emulsions-5 DEG C below of vitrification point, 17~25 parts, water, answersClose 4~8 parts of fire retardants.
Outer wall flexible photovoltaic decoration wall material of the present invention, wherein said composite flame-retardant agent is by magnesium hydroxide, aluminium hydroxide, 52Number chlorinated paraffin wax and antimony oxide mix, and mass ratio is magnesium hydroxide: aluminium hydroxide: No. 52 chlorinated paraffin waxs: three oxidationsTwo antimony=2:4:2:3.
Outer wall flexible photovoltaic decoration wall material of the present invention, wherein said composite flame-retardant agent is by aluminium hydroxide, magnesium hydroxide, tenBromine diphenylethane and antimony oxide mix, and mass ratio is aluminium hydroxide: magnesium hydroxide: TDE: three oxidationsTwo antimony=4:2:3:3.
Outer wall flexible photovoltaic decoration wall material of the present invention, the barrier film in wherein said flexible substrate for easily take off from PE film,Any one in PET film, PP barrier film, PA barrier film, silicone oil paper film or brown paper; Described barrier film thickness be 0.2mm~ 0.5mm;
Described gum layer is in self-adhesive, colloidal silicic acid calcium creep self-adhesive, polyacrylate self-adhesive by powerful buttress rubberAny one form, described gum layer thickness is 0.5mm~3mm;
The peace that described high-ductility fiberglass reinforced fire retardant nonwoven tire base adopts alkali-resistant glass fibre to strengthen is spun fire resistance fibre nonwoven, 4080Fabric nonwoven cloth, bar synthetic fibre strengthen any one in nonwoven; Described high-ductility glass fibre strengthen nonwoven thickness be 0.5mm~1mm, weight is 120~180g/m2。
Outer wall flexible photovoltaic decoration wall material of the present invention, wherein said flexible thin-film battery assembly is flexible at plastics etc.The hull cell that adopts deposition of transparent conductive film to prepare in flexible substrate is non-crystalline silicon flexible solar hull cell, copper indium potassium seleniumThin-film solar cells, cadmium telluride diaphragm solar battery, dye-sensitized cell or organic film battery;
Described rete is fluorine-containing TPT polyester film or ethene-TFE copolymer film, and thickness is 250um, mainly rise waterproof,The effect of isolation;
Described dope layer dyes function by having self-cleaning anti-pollution, and particle diameter is that nano level organic silicon acrylic coating or fluorocarbon coating are coated withCover formation, thickness is 30~70um, mainly plays self-cleaning, anti-pollution, and this coating can effectively be avoided the dirt such as dust, hazeDye the photoelectric transformation efficiency of thing reduction solar cell.
Outer wall flexible photovoltaic decoration wall material of the present invention, is provided with both positive and negative polarity on wherein said flexible thin-film battery assembly and leadsLine, described wire outside uses marine glue as protective layer, and outside described protective layer, is wound around the adhesive tape with waterproof fireproofing function.
Outer wall flexible photovoltaic decoration wall material of the present invention, adopts binding agent between wherein said flexible substrate and photovoltaic decorative layerBonding is fixing, and described binding agent is the fast hard binding agent of flame-proof type polyalcohol, and its composition by following mass percent forms: organicSilica acrylic acid lipid emulsion 55~85%, organic phosphates nitrogen based flame retardant 2.5~8.5%, crosslinking agent 10~25%, solvent 2~15%;Described adhesive thickness is 1~2mm; Wherein said crosslinking agent is silicone based or acrylics crosslinking agent, and described solvent is alcoholKind solvent, or ether solvent or lipid solvent.
A preparation method for outer wall flexible photovoltaic decoration wall material, comprises the steps:
(1) preparation of flexible substrate: under normal temperature state, by cement, quartz sand, acrylic emulsion, composite flame-retardant agent,Water philosophy adds mixing apparatus evenly to mix, and obtains flame-proof type polyalcohol cement mortar sizing material;
On proper automation production line, flame-proof type polyalcohol cement mortar sizing material is evenly coated on to described height by machine-processed scraper plateThe upper and lower surface of tough fiberglass reinforced fire retardant nonwoven, then thermal cycle blowing device auto-drying in production line, make polymer sandSlurry reaches rolling after initial set;
Then under the indoor temperature of 5~38 DEG C, deposit, natural drying maintenance reaches 28 days; Treat coiled material surface flame-proof type polyalcoholStrength of cement mortar reaches after requirement completely, and on proper automation production line, carry out gum, cover barrier film, excision forming, pointDo not make as required the soft of 400mm × 600mm, 600mm × 800mm, 1220mm × 2440mm or 600mm × 1200mmProperty sheet material products is for subsequent use;
(2) preparation of photovoltaic decorative layer: dye thering is self-cleaning anti-pollution through the flexible thin-film battery assembly front surface coated of rete encapsulationNanoscale organic silicon acrylic coating or the fluorocarbon coating of function, and be processed into the chi that meets the specification requirement of described flexible photovoltaic wall materialVery little;
(3) adopt the fast hard binding agent of flame-proof type polyalcohol that described flexible thin-film battery assembly bottom adhesive is arrived to described flexible substrateSurface;
(4) merge encapsulation: according to the fast hard binding agent of fexible film photovoltaic cell component, flame-proof type polyalcohol and flexible substrateOrder stacks gradually, and passes through roll-in and vacuumizes processing at laminating machine, makes each layer assembly close adhesion, forms integrative-structure,Obtain product.
Outer wall flexible photovoltaic decoration wall material difference from prior art of the present invention is:
The present invention merges the flexible thin-film solar photovoltaic cell components such as traditional decoration wall material and non-crystalline silicon, makes oneCan External Wall prevent fires, waterproof and decoration, can carry out again the functional Wall of building component of photovoltaic generation; Because exterior wall is softThe weight of property photovoltaic decoration wall material is only the 1/5-1/8 of common outdoor tile and stone material, and pliability meets external thermal insulation systemTo successively discharging the cracking resistance design concept of stress. Product is combined with construction wall by the bonding mode of similar tack roofing tile,Thereby realize on external wall heat insulation system large area, in flakes solar photovoltaic battery component be installed; By Building Fire Protection,Waterproof and decorative building material and photovoltaic technology integrated fusion, significantly reduced photoelectricity building construction cost.
Domestic building with good conditionsi all requires to carry out external wall thermal insulation with all kinds of lightweight organic foam materials at present, in such buildingOn carry out decoration of exterior wall and photovoltaic generation, need special weight, pliability, splitting resistance, water proofing property and the resistance of considering exterior materialThe physico mechanical characteristics such as combustion property. The present invention has given full play to the fexible films such as polymer-modified cement-based flexible wall material and non-crystalline silicon tooCan the photovoltaic cell component total thin light weight of body of sun, pliable and tough can be around, fire-proof and water-proof, long-lived advantage; The exterior wall of developingThe direct alternative traditional photoelectric curtain wall system of flexible photovoltaic decoration wall material, does not need to adopt all kinds of metal joists, only uses soft type photovoltaicThe self-adhesive at the wall material back side is bonded on wall face, and not only saving of labor but also material-saving have greatly shortened construction period and reduced constructionCost, for the extensive enforcement of BIPV provides a technology path of getting twice the result with half the effort.
Below in conjunction with accompanying drawing, outer wall flexible photovoltaic decoration wall material of the present invention is described further.
Brief description of the drawings
Fig. 1 is the structural representation of the outer wall flexible photovoltaic decoration wall material under one embodiment of the present invention.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of outer wall flexible photovoltaic decoration wall material, is made up of flexible substrate 1 and photovoltaic decorative layer 6 two parts,Described flexible substrate 1 is layer structure, comprises successively from the bottom to top: separation layer 7, gum layer 8, lower flame-retardant polymer cement bonded sandSlurry layer 9, high-ductility fiberglass reinforced fire retardant nonwoven tire base 10 and upper flame-retardant polymer cement sand bed 11, five-layer structure is fixed is oneBody. Described photovoltaic decorative layer 6 comprises flexible thin-film battery assembly 3, rete 4 and dope layer 5 from the inside to the outside successively; Described upper resistanceCombustion cement mortar with polymer layer 11 and lower flame-retardant polymer cement sand bed 9 thickness are 1.5mm, and former by following weight portionMaterial composition: 12 parts of general silicon 42.5 cement, 40 parts of quartz sands, at least 18 parts of Silicone acrylic emulsions below-5 DEG C of vitrification point,17 parts, water, 4 parts of composite flame-retardant agents. Described composite flame-retardant agent is magnesium hydroxide by mass ratio: aluminium hydroxide: No. 52 chlorination stonesThe raw material of wax: antimony oxide=2:4:2:3 mixes.
Barrier film 7 in described flexible substrate is for easily taking off the film from PE, and thickness is 0.2mm; Described gum layer 8 is by powerful isobutylRubber series self-adhesive forms, and described gum layer 8 thickness are 0.5mm; Described high-ductility fiberglass reinforced fire retardant nonwoven tire base 10 adoptsThe peace that alkali-resistant glass fibre strengthens is spun fire resistance fibre nonwoven, and thickness is 0.5mm, and weight is 120g/m2。
Described flexible thin-film battery assembly 3 is in the flexible flexible substrate such as plastics, to adopt prepared by deposition of transparent conductive film thinFilm battery is non-crystalline silicon flexible solar hull cell; Described rete 4 is fluorine-containing TPT polyester film, and thickness is 250um; InstituteState dope layer 5 and dye function by having self-cleaning anti-pollution, particle diameter is that nano level organic silicon acrylic coating applies and forms, and thickness is30um. Between described flexible substrate 1 and photovoltaic decorative layer 6, adopt binding agent 2 bondings fixing, described binding agent 2 is flame retardant typeThe fast hard binding agent of polymer, its one-tenth by following mass percent is grouped into: organosilicon acrylic fat class emulsion 85%, organophosphorClass nitrogen based flame retardant 2.5%, crosslinking agent 10%, solvent 2.5%, wherein said crosslinking agent is silicone based crosslinking agent, described solventFor alcohols solvent, described tack coat 2 thickness are 1mm.
On described flexible thin-film battery assembly 3, be provided with both positive and negative polarity wire, described wire outer surface uses marine glue as protective layer, andOutside described protective layer, be wound around the adhesive tape with waterproof fireproofing function.
Embodiment 2
Described upper flame-retardant polymer cement sand bed 11 and lower flame-retardant polymer cement sand bed 9 thickness are 4mm, and by as followsThe raw material composition of weight portion: 17 parts of general silicon 42.5 cement, 45 parts of quartz sands, vitrification point is the silicon third below-5 DEG C at least23 parts of emulsions, 25 parts, water, 8 parts of composite flame-retardant agents. Described composite flame-retardant agent is by aluminium hydroxide, magnesium hydroxide, decabrominated diphenyEthane and antimony oxide mix, and mass ratio is aluminium hydroxide: magnesium hydroxide: TDE: antimony oxide=4:2:3:3. Barrier film 7 in described flexible substrate is PP barrier film, and thickness is 0.5mm; Described gum layer 8 is by colloidal silicic acidCalcium creep self-adhesive forms, and described gum layer 8 thickness are 3mm; Described high-ductility fiberglass reinforced fire retardant nonwoven tire base 10 adopts resistance to4080 fabric nonwoven cloths that alkali containing glass fibre strengthens; It is 1mm that described high-ductility glass fibre strengthens nonwoven 10 thickness, and weight is180g/m2。
Described flexible thin-film battery assembly 3 is copper indium potassium selenium thin-film solar cells; Described rete 4 is that ethene-tetrafluoroethene is commonPolymers film; Described dope layer 5 fluorocarbon coatings apply and form, and thickness is 70um. Described flexible substrate 1 and photovoltaic decorative layer 6 itBetween adopt binding agent bonding fixing, described binding agent 2 be flame-proof type polyalcohol binding agent firmly soon, it is by following mass percentOne-tenth is grouped into: organosilicon acrylic fat class emulsion 55%, and organic phosphates nitrogen based flame retardant 8.5%, crosslinking agent 25%, solvent 11.5%,Wherein said crosslinking agent is acrylics crosslinking agent, and described solvent is ether solvent. Described tack coat 2 thickness are 2mm. ItsHe is with embodiment 1.
Embodiment 3
Described upper flame-retardant polymer cement sand bed 11 and lower flame-retardant polymer cement sand bed 9 thickness are 2mm, and by as followsThe raw material composition of weight portion: 15 parts of general silicon 42.5 cement, 42 parts of quartz sands, vitrification point is the silicon third below-5 DEG C at least20 parts of emulsions, 20 parts, water, 6 parts of composite flame-retardant agents. Described composite flame-retardant agent is magnesium hydroxide by mass ratio: aluminium hydroxide:The raw material of 52# chlorinated paraffin wax: antimony oxide=2:4:2:3 forms.
Barrier film 7 in described flexible substrate is PA barrier film; Described barrier film 7 thickness are 0.3mm; Described gum layer 8 byPolyacrylate self-adhesive forms, and described gum layer 8 thickness are 2mm; Described high-ductility fiberglass reinforced fire retardant nonwoven tire base 10Adopt the bar synthetic fibre that alkali-resistant glass fibre strengthens to strengthen nonwoven, thickness is 0.8mm, and weight is 150g/m2。
Described flexible thin-film battery assembly 3 is organic film battery; Described dope layer 5 thickness are 50um. Described flexible substrate 1And between photovoltaic decorative layer 6, adopting binding agent 2 bondings fixing, described binding agent 2 is the fast hard binding agent of flame-proof type polyalcohol, itsOne-tenth by following mass percent is grouped into: organosilicon acrylic fat class emulsion 65%, and organic phosphates nitrogen based flame retardant 5%, crosslinkedAgent 15%, solvent 15%, thickness is 1.5mm, and wherein said crosslinking agent is silicone based crosslinking agent, and described solvent is lipid solvent.Other are with embodiment 1.
Embodiment 4
Described upper flame-retardant polymer cement mortar layer 11 and lower flame-retardant polymer cement sand bed 9 thickness are 3mm, and by as followsThe raw material composition of weight portion: 16 parts of general silicon 42.5 cement, 44 parts of quartz sands, vitrification point is the silicon third below-5 DEG C at least19 parts of emulsions, 18 parts, water, 7 parts of composite flame-retardant agents. Described composite flame-retardant agent is by aluminium hydroxide, magnesium hydroxide, decabrominated diphenyEthane and antimony oxide mix, and mass ratio is aluminium hydroxide: magnesium hydroxide: TDE: antimony oxide=4:2:3:3. Barrier film 7 in described flexible substrate is for easily taking off from silicone oil paper film; Described barrier film 7 thickness are 0.3mm; The described back of the bodyGlue-line 8 is that self-adhesive forms by powerful butyl rubber, and described gum layer 8 thickness are 1.5mm; Described high-ductility fiberglass reinforced fire retardant withoutSpin the peace that cloth tire base 10 adopts alkali-resistant glass fibre to strengthen and spin fire resistance fibre nonwoven, thickness is, 0.9mm, and weight is 160g/m2。
Described flexible thin-film battery assembly 3 is dye-sensitized cell; Described rete 4 is ethene-TFE copolymer film, thickDegree is 250um; Described dope layer 5 is applied and is formed by fluorocarbon coating, and thickness is 60um. Described flexible substrate 1 and photovoltaic are decoratedBetween layer 6, adopt binding agent 2 bondings fixing, described binding agent 2 is the fast hard binding agent of flame-proof type polyalcohol, and it is by following qualityThe one-tenth of percentage is grouped into: organosilicon acrylic fat class emulsion 70%, and organic phosphates nitrogen based flame retardant 8%, crosslinking agent 20%, moltenAgent 2%, wherein said crosslinking agent is acrylics crosslinking agent, and described solvent is lipid solvent, and described tack coat 2 thickness are1.8mm. Other are with embodiment 1.
Embodiment 5
A preparation method for outer wall flexible photovoltaic decoration wall material, comprises the steps:
(1) preparation of flexible substrate 1: under normal temperature state, by cement, quartz sand, acrylic emulsion, composite flame-retardant agent, waterPhilosophy adds mixing apparatus evenly to mix, and obtains flame-proof type polyalcohol cement mortar sizing material. At proper automation production lineUpper, flame-proof type polyalcohol cement mortar sizing material is evenly coated on to described high-ductility fiberglass reinforced fire retardant nonwoven 10 by machine-processed scraper plateUpper and lower surface, then thermal cycle blowing device auto-drying in production line, makes polymer mortar reach rolling after initial set. SoAfter under the indoor temperature of 5~38 DEG C, deposit, natural drying maintenance reaches 28 days. Treat coiled material surface flame-proof type polyalcohol cement mortarIntensity reaches after requirement completely, then on proper automation production line, carry out gum (form gum layer 8), cover barrier film 7, cutBe slit into type, make as required respectively 400mm × 600mm, 600mm × 800mm, 1220mm × 2440mm andThe flexible sheet material goods of 600mm × 1200mm are for subsequent use;
(2) preparation of photovoltaic decorative layer 6: flexible thin-film battery assembly 3 front surface coated that encapsulate through rete 4 are had self-cleaningThe nanoscale organic silicon acrylic coating of anti-pollution function or fluorocarbon coating (form dope layer 5), and be processed into and meet described flexibilityThe size of substrate 1 specification requirement;
(3) adopt the fast hard binding agent of flame-proof type polyalcohol that described flexible thin-film battery assembly 3 bottom adhesive are arrived to described flexible linerThe surface at the end 1;
(4) merge encapsulation: according to fexible film photovoltaic cell component 3, the fast hard binding agent of flame-proof type polyalcohol and flexible substrate 1Order stack gradually, through roll-in and vacuumize processing at laminating machine, make each layer assembly close adhesion, form integrative-structure,Obtain product.
Embodiment 6
Install and construction method:
(1) first cleaning building base course wall. As not reaching decoration of exterior wall engineering base course wall flatness, exterior wall flatness checks and acceptsStandard, need be to metope hanging wire, and with cement mortar screeding;
(2) brushing interfacial agents on metope, interfacial agents is emulsion or the solution containing polyacrylate resinoid, or containing poly-secondEnol resinoid, or emulsion or the solution of polyvinyl alcohol contracting acid resin;
(3) in interfacial agents, locate, and eject bonding control line by actual installation position. According to on-the-spot feature and flexible photovoltaicThe specification of decoration wall material, determines the density of snap the line in length and breadth, smooth vertical and horizontal to guarantee the stickup of wall material;
(4) bore wire guide in the position of every block of wall material, and place therein conduit;
(5), after the separation layer on wall material is peeled off, paving is in building substrate surface. Wall material is pressed from top to bottom, from a left side extremelyRight ceramic tile, the method for attaching of stone material are installed. Meanwhile the contact conductor on wall material is penetrated indoor by conduitIn installation pipe;
(6) in strict accordance with pasting control line examination paving and actual sticky paving wall material, should not occur causing wall material crooked because of cumulative errorsPhenomenon.
(7) use plastics rod from wall material middle part to both sides roll extrusion, deaeration, makes wall material firmly stick on building exterior wall face.
(8) by the contact conductor of introducing in installation pipe within the walls by terminal box corresponding connection mutually, by every outer wall flexible lightThe both positive and negative polarity wire of volt on decoration wall material with draw terminal box and carry out circuit and be connected combination (connection of serial or parallel connection circuit), then generalConnection, to inverter, changes direct current into alternating current, and the distribution box in being arranged on building is served electrical network (grid-connected makingWith) or directly offer building load electricity consumption. Be provided with fluid sealant at exterior wall flexible photovoltaic decoration wall material side seam place and carry out anti-watertightEnvelope insulation is processed, and makes it to reach the requirement of waterproof, antifreeze, anti-high temperature.
Above-described embodiment is described the preferred embodiment of the present invention, not scope of the present invention is carried outLimit, design under the prerequisite of spirit not departing from the present invention, those of ordinary skill in the art make technical scheme of the present inventionVarious distortion and improvement, all should fall in the definite protection domain of the claims in the present invention book.