CN102529213A - Sun-shading low-radiation glass with cermet film as conducting layer - Google Patents
Sun-shading low-radiation glass with cermet film as conducting layer Download PDFInfo
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- CN102529213A CN102529213A CN2011104416826A CN201110441682A CN102529213A CN 102529213 A CN102529213 A CN 102529213A CN 2011104416826 A CN2011104416826 A CN 2011104416826A CN 201110441682 A CN201110441682 A CN 201110441682A CN 102529213 A CN102529213 A CN 102529213A
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Abstract
Sun-shading low-radiation glass with a cermet film as a conducting layer belongs to the technical field of glass manufacture and energy saving. The glass is formed by a first medium layer, a conducting layer, and a second medium layer which are deposited on glass in order. The conducting layer is composed of a single-layer or multi-layer cermet film, and the cermet film is a mixed film of metal and mediums. In the cermet film, the volume ratio of the metal component is called as a fill factor which is within a range of 0.1-1.0. If the conducting layer is composed of a multi-layer cermet film, the fill factor of the film at an internal layer near the glass is higher than that of the film at an external layer. The low-radiation glass is stable, and high in reliability, has high production efficiency, can greatly reduce cost, and facilitates large-scale popularization and application.
Description
Technical field
The invention belongs to glass manufacturing and field of energy-saving technology, particularly a kind of is the sunshade low emissivity glass of dielectric layer with the metallic cermet films.
Background technology
Low radiation film can stop the mutual radiation between the medi-empty glass window internal and external layers of glass, reaches heat insulation purpose.Because low-radiation film has stoped in the infrared ray inlet chamber in fraction visible light and a large portion sunlight; In North China and the areas to the south, North China; This type low emissivity glass is totally not energy-conservation winter, promptly be prevented from entering in the indoor sunlight energy be prevented to be radiated outdoor far-infrared ray power suitable basically.For northern area, Winter protection and fully obtain the energy no less important in the sunlight, not energy-conservation basically obviously is inappropriate.
Winter saving energy glass is not energy-conservation to be the common problem that current low emissivity glass exists, and compares energy in the sunlight that multiple reflection falls and stop indoor roughly suitable to the outdoor energy that distributes with white glass more.We can say also, compare that the clean energy-conservation of low emissivity glass is zero basically with white glass, even for negative.
The low emissivity glass that realization has clean energy-conservation character is the problem that must solve, otherwise promotional value is little, also can generally not accepted by masses.Present unique method that can adopt is to increase the absorption, the particularly absorption of sunlight middle infrared (Mid-IR) of this type glass to sunlight, keeps the low radiation under the room temperature simultaneously.The heat that absorbs sunlight and form is dispersed into indoorly winter, and be dispersed into outdoor summer.
Discover that the metallic cermet films with high metal ratio has above-mentioned character, in this metalloid film, what character was best is the metallic cermet films of aluminium, comprises aluminium/aluminium nitride film, aluminium/aluminum oxide film, aluminium/aluminum oxynitride film.
Summary of the invention
The present invention proposes a kind of sunshading low emissivity glass, sunlight there is certain absorption, is conductive layer and far infrared is had the thin-film material of high reflex, realizes energy-efficient purpose.
Technical scheme of the present invention is:
Metallic cermet films is the sunshade low emissivity glass of conductive layer; Technical characterictic of the present invention is: constitute by being deposited in order in the 1st dielectric layer on glass, conductive layer and the 2nd dielectric layer; Described conductive layer is made up of the single or multiple lift metallic cermet films, and described metallic cermet films refers to the mixed film of metal and medium.
The shared volume ratio of metal is called as fill factor, curve factor in the described metallic cermet films, and its scope is between 0.1 to 1.0.If conductive layer is to be made up of the multiple layer metal ceramic membrane, then the fill factor, curve factor near the internal layer membrane of glass is higher than outer membrane.
Metal ingredient medium composition in the described metallic cermet films comprises oxide, nitride or the nitrogen oxide of aluminium, also comprises oxide, nitride or the nitrogen oxide of aluminium alloy.
Metal ingredient in the described metallic cermet films comprises aluminium and aluminium alloy, magnesium and magnesium alloy, titanium and titanium alloy, zirconium and zircaloy, niobium and niobium alloy, tantalum and tantalum alloy, molybdenum and molybdenum alloy, iron and ferroalloy, cobalt and cobalt alloy, nickel and nickel alloy, and medium composition is oxide, nitride or the nitrogen oxide of above-mentioned these metals and metal alloy.Described conductive layer can be made up of the single or multiple lift film.
For make sunlight never low-radiation film one side incide reflectivity when on glass far above from there being low radiation film one side to incide the reflectivity when on glass, described the 1st dielectric layer can be cancelled.Such structure makes when low emissivity glass is set to the glass outer of hollow window, and higher sunlight reflected rate is arranged summer, helps practicing thrift air conditioning electricity.
From cost consideration, oxide, nitride or the nitrogen oxide of the first-selected aluminium of dielectric layer material also comprise oxide, nitride or the nitrogen oxide of aluminium alloy.
Dielectric layer material commonly used comprises other metal, like the oxide of titanium, zirconium, tantalum, niobium etc., also comprises oxide, nitride or the nitrogen oxide of silicon, and the oxide of silicon alloy, nitride or nitrogen oxide.
Discover that in this sunshade low emissivity glass, the bigger absorption owing to light causes face different to the reflectivity of sunlight with glass.Generally speaking, the luminance factor common white glass of face is also little, and the reflection of glass can be adjusted through the thickness and the refractive index of the 1st dielectric layer.If cancel the 1st dielectric layer, then the reflectivity of glass can be far above common white glass.This characteristic can well be utilized, and promptly carries out the design of special window construction, makes that the low emissivity glass in the hollow window in summer is positioned at an outdoor side, and the low emissivity glass in the winter hollow window is positioned at an indoor side.Such setting can further reduce the sunlight ratio in the summer inlet chamber, and the sunlight ratio in the winter inlet chamber is big summer.Same setting, low-radiation film absorb the heat that sunlight transforms, and summer, major part was dispersed into outdoorly, and then be dispersed into indoor winter.
Compared with prior art, the present invention has the following advantages and gives prominence to effect: low emissivity glass provided by the present invention has clean energy-saving effect, and conductive film good stability, the target cost of employing be far below silver, and does not receive resource limit.The present invention can make the application of low emissivity glass obtain bigger popularization, and good impetus is played in the development of building energy conservation.
The specific embodiment
Through several concrete embodiment the present invention is further specified below.
Embodiment 1: metallic cermet films is the sunshade low emissivity glass of conductive layer, and its structure is followed successively by: the fill factor, curve factor of glass plate, 10 nanometer thickness is 0.7 stainless steel/alumina conductive layer, aluminum oxide film the 2nd dielectric layer of 80 nanometer thickness.The infrared emission coefficient that should hang down low emissivity glass is less than 0.15, and shading coefficient is about 0.35.
Embodiment 2: metallic cermet films is the sunshade low emissivity glass of conductive layer, and its structure is followed successively by: glass plate, 7 nanometer thickness fill factor, curve factors are 0.7 Mo/AlN film conductive layer, aluminum oxynitride film the 2nd dielectric layer of 70 nanometer thickness.The infrared emission coefficient that should hang down low emissivity glass is less than 0.15, and shading coefficient is about 0.4.
Embodiment 3: metallic cermet films is the sunshade low emissivity glass of conductive layer; Its structure is followed successively by: silicon nitride the 1st dielectric layer of glass plate, 40 nanometer thickness, 10 nanometer thickness fill factor, curve factors are 1.0 Al/AlN (fine aluminium) conductive layer, silicon nitride film the 2nd dielectric layer of 40 nanometer thickness.The infrared emission coefficient that should hang down low emissivity glass is less than 0.08, and shading coefficient is about 0.55.
Embodiment 4: metallic cermet films is the sunshade low emissivity glass of conductive layer, and its structure is followed successively by: the fill factor, curve factor of glass plate, 10 nanometer thickness is that 0.6 Al/AlN film and 7 nanometer thickness fill factor, curve factors are 0.25 Al/AlN film conductive layer, silicon nitride film the 2nd dielectric layer of 20 nanometer thickness.Infrared emission coefficient that should low low emissivity glass is less than 0.1, and the reflectivity of sunlight during from low-radiation film one side incident be less than 0.1, and the reflectivity during from an opposite side incident is 0.3.
Claims (4)
1. metallic cermet films is the sunshade low emissivity glass of conductive layer; Constitute by being deposited in order in the 1st dielectric layer on glass, conductive layer and the 2nd dielectric layer; It is characterized in that: described conductive layer is made up of the single or multiple lift metallic cermet films, and described metallic cermet films refers to the mixed film of metal and medium.
2. sunshade low emissivity glass according to claim 1 is characterized in that: in the described metallic cermet films, the shared volume ratio of metal ingredient is called as fill factor, curve factor, and its scope is between 0.1 to 1.0; If conductive layer is to be made up of the multiple layer metal ceramic membrane, then the fill factor, curve factor near the internal layer membrane of glass is higher than outer membrane.
3. sunshade low emissivity glass according to claim 1; It is characterized in that: the metal ingredient in the described metallic cermet films comprises aluminium and aluminium alloy; Magnesium and magnesium alloy, titanium and titanium alloy, zirconium and zircaloy, niobium and niobium alloy, tantalum and tantalum alloy, molybdenum and molybdenum alloy, iron and ferroalloy, cobalt and cobalt alloy, nickel and nickel alloy, medium composition are oxide, nitride or the nitrogen oxide of above-mentioned these metals and metal alloy composition.
4. sunshade low emissivity glass according to claim 1 is characterized in that: the reflectivity when increasing sunlight from the opposite side incident of low-radiation film, described the 1st dielectric layer can be cancelled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104416826A CN102529213A (en) | 2011-12-27 | 2011-12-27 | Sun-shading low-radiation glass with cermet film as conducting layer |
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| CN2011104416826A CN102529213A (en) | 2011-12-27 | 2011-12-27 | Sun-shading low-radiation glass with cermet film as conducting layer |
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| CN102529213A true CN102529213A (en) | 2012-07-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020192473A1 (en) * | 1999-09-23 | 2002-12-19 | Carole Gentilhomme | Glazing provided with a stack of thin layers acting on solar radiation |
| US20080070045A1 (en) * | 2004-10-18 | 2008-03-20 | Pilkington Group Limited | Solar Control Glazing |
| US20090197096A1 (en) * | 2005-07-26 | 2009-08-06 | David A Strickler | Silver-Free Low-E Solar Control Coating |
| CN101876490A (en) * | 2009-12-25 | 2010-11-03 | 中国科学院广州能源研究所 | Solar energy medium-high temperature selective heat absorbing coating |
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2011
- 2011-12-27 CN CN2011104416826A patent/CN102529213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020192473A1 (en) * | 1999-09-23 | 2002-12-19 | Carole Gentilhomme | Glazing provided with a stack of thin layers acting on solar radiation |
| US20080070045A1 (en) * | 2004-10-18 | 2008-03-20 | Pilkington Group Limited | Solar Control Glazing |
| US20090197096A1 (en) * | 2005-07-26 | 2009-08-06 | David A Strickler | Silver-Free Low-E Solar Control Coating |
| CN101876490A (en) * | 2009-12-25 | 2010-11-03 | 中国科学院广州能源研究所 | Solar energy medium-high temperature selective heat absorbing coating |
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Application publication date: 20120704 |