WO2011107008A1 - 一种薄膜太阳能反射聚光装置 - Google Patents

一种薄膜太阳能反射聚光装置 Download PDF

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Publication number
WO2011107008A1
WO2011107008A1 PCT/CN2011/071121 CN2011071121W WO2011107008A1 WO 2011107008 A1 WO2011107008 A1 WO 2011107008A1 CN 2011071121 W CN2011071121 W CN 2011071121W WO 2011107008 A1 WO2011107008 A1 WO 2011107008A1
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WIPO (PCT)
Prior art keywords
fixed
focus
focus bracket
planar
film
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PCT/CN2011/071121
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English (en)
French (fr)
Inventor
邓大仁
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天津市太阳神科技有限公司
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Application filed by 天津市太阳神科技有限公司 filed Critical 天津市太阳神科技有限公司
Priority to JP2012555287A priority Critical patent/JP2013521519A/ja
Priority to AU2011223409A priority patent/AU2011223409A1/en
Priority to EP11750161.9A priority patent/EP2544036A4/en
Publication of WO2011107008A1 publication Critical patent/WO2011107008A1/zh
Priority to US13/600,254 priority patent/US20120325201A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
    • G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • F24S23/745—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces flexible
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • G02B19/0023—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) at least one surface having optical power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/83—Other shapes
    • F24S2023/834—Other shapes trough-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/86—Arrangements for concentrating solar-rays for solar heat collectors with reflectors in the form of reflective coatings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the invention relates to a solar reflective concentrating device, in particular to a thin film solar reflective concentrating device. Background technique
  • the solar reflective concentrating device has three elements: a reflective coating with a very high reflection coefficient (concentrating layer); a reflective surface that meets optical requirements; and an accurate focusing focus.
  • the prior art solar reflective concentrating device is mostly processed on an integral base material according to optical requirements into an accurate surface shape, and then the coating is polished on the surface shape of the surface, and the light-receiving body is erected by using a welding bracket. Go to the focus to form a concentrating device.
  • the above-mentioned prior art concentrating device has the following drawbacks: high material cost, high processing difficulty, inaccurate focus, and mass production are very difficult. Therefore, the above concentrating device can only be used in the laboratory or in the demonstration model project, and cannot be widely spread and popularized, so that the utilization and development of solar energy are limited. Summary of the invention
  • the object of the present invention is to overcome the deficiencies of the above-mentioned technologies, and to provide a thin-film solar reflective concentrating device which is low-cost, easy to manufacture, has high repeatability and good light collecting effect, and can be widely spread to thousands of households.
  • a thin film solar reflective concentrating device comprising: a concentrating film, a surface-shaped bottom plate and a surface-shaped fixed-focus bracket; the concentrating film is a planar film having a reflective coating, having a reflective coating The planar film is disposed on the top surface of the surface-shaped bottom plate; the surface-shaped bottom plate is a thin plate, and the bottom surface of the surface-shaped bottom plate is attached on the top surface of the surface-shaped fixed-focus bracket, and the shape of the top surface of the surface-shaped fixed-focus bracket is reproduced;
  • the shaped focus bracket comprises: a top optical fixed surface of the fixed focus bracket and a fixed focus structure integrated with the fixed focus bracket, the top optical surface of the fixed focus bracket is located on the top surface of the surface fixed fixed bracket, the mating surface The center point of the fixed focus structure of the shaped focal bracket is located at the focus of the optical surface at the top of the planar fixed focus bracket.
  • a thin film solar reflective concentrating device comprising: a concentrating film, a surface-shaped bottom plate and a surface-shaped fixed-focus bracket; the concentrating film is a micro-prism total reflection concentrating film, and the micro-prism is The reflective concentrating film is disposed on the top surface of the surface-shaped bottom plate; the surface-shaped bottom plate is a thin plate, and the bottom surface of the surface-shaped bottom plate is attached to the top surface of the surface-shaped fixed-focus bracket, and the top surface shape of the surface-shaped fixed-focus bracket is reproduced;
  • the surface-shaped fixed-focus bracket includes: a top-shaped fixed-focus bracket top optical curved surface and a fixed-focus structure integrated with the planar fixed-focus bracket, the top-shaped fixed-focus bracket top optical curved surface is located on a top surface of the planar fixed-focus bracket, The center point of the fixed focus structure integrated with the planar fixed focus bracket is located at the focus of the optical curved surface at the top of the planar fixed focus bracket.
  • the present invention decomposes a component which is difficult to process by polishing into a concentrating film and a surface-shaped substrate, and the decomposed component is easy to process, and the cost is low.
  • the invention decomposes the difficult-shaped surface into a surface-shaped bottom plate and a surface-shaped fixed-focus bracket, and forms a flat-shaped bottom plate into a thin plate, and only forms a precise shape required for collecting light on the top surface of the surface-shaped fixed-focus bracket.
  • the decomposed surface-shaped fixed-focus bracket is easy to be accurately processed, so that the soft surface-shaped bottom plate can be accurately attached to the top surface of the surface-shaped fixed-focus bracket, and the top surface shape of the surface-shaped fixed-focus bracket can be accurately reproduced.
  • the formation of a surface shape that is easy to process and has a low cost is realized.
  • the present invention solves the problem of precise refocusing by using a fixed-focus structure and a surface-shaped fixed-focus bracket on one part, and the part is a mold-formed part, thereby successfully solving the problem of precise repeating focusing.
  • the heat collecting tube 1 is disposed on the concentrating device of the present invention, so that the heat collecting tube 1 becomes the focus of concentrating light, and the solar heat can be collected in a large amount, which is 6-9 more than the heat collected by the collecting tube only. Double, to achieve more heat collection, heating the water at a higher temperature (near 100 ° C), so that solar hot water can not only be used for bathing but also for heating, so that the use of solar hot water to a higher level.
  • Figure 1 is a perspective view of the present invention
  • Figure 2 is a front view of Figure 1;
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is a cross-sectional view showing the structure of a planar film having a reflective coating
  • Figure 5 is a schematic view showing the structure of a surface-shaped fixed-focus bracket
  • Fig. 6 is a schematic view showing the structure of a microprism total reflection condensing film, which shows a path of total reflection of solar rays on the prism.
  • Figure 1 is a perspective view of the present invention
  • Figure 2 is a front view of Figure 1
  • Figure 3 is a cross-sectional view taken along line AA of Figure 2
  • 4 is a cross-sectional view showing the structure of a planar film having a reflective coating
  • FIG. 5 is a schematic view showing the structure of a planar fixed-focusing support
  • FIG. 6 is a schematic view showing the structure of a micro-prism total-reflecting condensing film, which shows a total reflection of the solar ray on the prism. .
  • the invention provides a thin film solar reflective concentrating device, comprising: a concentrating film 2, a surface-shaped bottom plate 3 and a surface-shaped fixed-focus bracket 4.
  • the concentrating film 2 is a planar film 2a having a reflective coating, and a planar film 2a having a reflective coating is disposed on the top surface of the planar bottom plate 3; It is a thin plate, and the bottom surface of the planar bottom plate 3 is attached to the top surface of the planar fixed-focus bracket 4, and the shape of the top surface of the planar fixed-focus bracket 4 is reproduced.
  • the surface-shaped fixed-focus bracket 4 includes: a top-shaped fixed-focus bracket top optical curved surface 4a and a fixed-focus structure 4b integrated with the planar fixed-focus bracket.
  • the top surface of the planar fixed-focus bracket optical surface 4a is located on the top surface of the surface-shaped fixed-focus bracket 4, and the center point of the fixed-focus structure 4b integrated with the surface-shaped fixed-focus bracket is located at the focus of the optical curved surface 4a at the top of the planar fixed-focus bracket
  • the structure of the planar film 2a having a reflective coating is: plating a reflective coating 8 on one side of the transparent plastic film, and applying a protective film layer 9 on the reflective coating 8; 7 The other side is coated with an adhesive 6.
  • the condensing film 2 is a planar film 2a having a reflective coating
  • the shape of the planar substrate 3 is a paraboloid.
  • the top-shaped fixed-focus bracket top optical curved surface 4a is a parabolic cylinder; the surface-shaped fixed-focus bracket top optical curved surface 4a and the surface-shaped fixed focus
  • the bracket-integrated fixed focus structure 4b is an integral structure or a precisely positioned mechanical connection structure.
  • the present invention further includes a heat collecting tube 1, and the center of the heat collecting tube 1 coincides with a center point of the fixed focus structure 4b integral with the planar fixed focus holder.
  • the invention firstly manufactures a surface-shaped fixed-focus bracket 4 whose top surface is a precise paraboloid, and then attaches a thin-shaped bottom plate 3 of less than 0.5 mm to the upper surface of the surface-shaped fixed-focus bracket 4, thereby ensuring a soft surface-shaped bottom plate. 3 accurately reproducing the upper parabolic shape of the planar fixed-focus bracket 4; flatly adhering the light-concentrating film 2a having the reflective coating to the upper surface of the planar bottom plate 3, and then inserting the heat collecting tube 1 into the surface-shaped fixed-focus bracket 4
  • the thin-film solar reflective concentrating device of the present invention is completed in the hole of the fixed-focus structure 4b of the planar fixed-focus bracket.
  • the invention provides a thin film solar reflective concentrating device, comprising: a concentrating film 2, a surface-shaped bottom plate 3 and a surface-shaped fixed-focus bracket 4.
  • the concentrating film 2 is a microprism total reflection concentrating film 2b, and the microprism total reflection concentrating film 2b is disposed on the top surface of the surface substrate 3;
  • the bottom plate 3 is a thin plate, and the bottom surface of the surface-shaped bottom plate 3 is attached to the top surface of the surface-shaped fixed-focus bracket 4, and the top surface shape of the surface-shaped fixed-focus bracket 4 is reproduced;
  • the surface-shaped fixed-focus bracket 4 includes: a surface-shaped fixed focus The optical top surface 4a of the bracket top and the fixed focus structure 4b integrated with the surface fixed focus bracket
  • the surface-shaped fixed-focus bracket top optical curved surface 4a is located on the top surface of the surface-shaped fixed-focus bracket 4, and the center point of the fixed-focus structure 4b integrated with the planar fixed-focus bracket is located at the focus f of the optical curved surface 4a at the top of the planar fixed-focus bracket .
  • the microprism total reflection concentrating film 2b has a structure in which a plurality of minute prisms are formed on the transparent plastic film.
  • the shape of the planar bottom plate 3 is such that the prism on the microprism total reflection concentrating film 2b satisfies the total reflection condition and ensures reflection.
  • the light is concentrated on a focus f.
  • the top surface of the planar fixed-focus bracket optical surface 4a is a digitized cylinder surface
  • the digitized cylinder surface is: incident light il parallel to the optical axis, I2, i3 is refracted by the first plane 11 and falls on the digitized curved surface 12, and then totally reflected by the digitized curved surface 12 onto the second plane 14, and the reflected rays rl, r2, r3 refracted by the second plane 14 are gathered together.
  • the present invention further includes a heat collecting tube 1, and the center of the heat collecting tube 1 coincides with a center point of the fixed focus structure 4b integral with the planar fixed focus holder.
  • the invention firstly manufactures the surface-shaped fixed-focus bracket 4 whose top surface is the precise digitized curved surface 12, and then attaches the thin-shaped bottom plate 3 of less than 0.5 mm to the upper surface of the surface-shaped fixed-focus bracket 4, thereby ensuring softness.
  • the planar bottom plate 3 accurately reproduces the shape of the upper digitized curved surface 12 of the planar fixed-focus bracket 4; the microprism total reflection condensing film 2b is flatly adhered to the upper surface of the planar bottom plate 3, and the heat collecting tube 1 is inserted into the surface shape.
  • the thin-film solar reflection concentrating device of the present invention is completed in the hole of the fixed-focus structure 4b on the focal holder 4 which is integral with the planar fixed-focus holder.

Description

一种薄膜太阳能反射聚光装置 技术领域
本发明涉及的是太阳能反射聚光装置， 特别涉及的是一种薄膜太阳能反射聚光装 置。 背景技术
太阳能反射聚光装置有三要素： 反射系数极高的反光镀层 （聚光层） ； 符合光学要 求的反射形面； 准确的聚光焦点定位。
现有技术的太阳能反射聚光装置， 多半是在一块整体的基体材料上， 按光学要求加 工成准确的面形， 再在该面形的形面上抛光镀膜， 再用焊接支架将受光体架设到焦点上 去从而形成聚光装置。
上述现有技术的聚光装置存在如下缺陷： 材料成本高， 加工难度大， 焦点找不准， 批量生产非常困难。 因此上述聚光装置只能在实验室或在展示性的样板工程中使用， 根 本不能大面积普及和推广， 使太阳能的利用和发展受到限制。 发明内容
本发明的目的在于克服上述技术的不足， 提供一种低成本、 易制造， 重复精度高聚 光效果好， 能大面积普及到千家万户的一种薄膜太阳能反射聚光装置。
解决上述技术问题的技术方案是：
一种薄膜太阳能反射聚光装置， 所述薄膜太阳能反射聚光装置包括： 聚光膜、 面形 底板和面形定焦支架； 所述聚光膜是具有反光镀层的平面膜， 具有反光镀层的平面膜设 置在面形底板顶部面上； 所述面形底板是薄板， 面形底板的底面贴附在面形定焦支架顶 部表面上， 并再现面形定焦支架顶部表面形状； 所述面形定焦支架包括： 面形定焦支架 顶部光学曲面和与面形定焦支架一体的定焦结构，所述面形定焦支架顶部光学曲面位于 面形定焦支架顶部表面，所述与面形定焦支架一体的定焦结构的中心点位于面形定焦支 架顶部光学曲面的焦点。
一种薄膜太阳能反射聚光装置， 所述薄膜太阳能反射聚光装置包括： 聚光膜、 面形 底板和面形定焦支架； 所述聚光膜是微棱镜全反射聚光膜， 微棱镜全反射聚光膜设置在 面形底板顶部面上； 所述面形底板是薄板， 面形底板的底面贴附在面形定焦支架顶部表 面上， 并再现面形定焦支架顶部表面形状； 所述面形定焦支架包括： 面形定焦支架顶部 光学曲面和与面形定焦支架一体的定焦结构，所述面形定焦支架顶部光学曲面位于面形 定焦支架顶部表面，所述与面形定焦支架一体的定焦结构的中心点位于面形定焦支架顶 部光学曲面的焦点。 本发明的有益效果是：
1.本发明将加工难度大需要抛光镀膜的部件分解成聚光膜和面形底板， 分解后的部 件便于加工， 成本低。
2.本发明将加工难度大的形面分解为面形底板和面形定焦支架， 又将面形底板制成 薄板， 只对面形定焦支架的顶部表面制成聚光需要的精确形面， 而分解后的面形定焦支 架容易做到精确加工， 这样能保证柔软的面形底板贴附在面形定焦支架的顶部表面上 时，能精确地再现面形定焦支架顶部表面形状，实现了便于加工，成本低的面形的形成。
3.本发明将难于精确定焦的问题用把定焦结构与面形定焦支架做到一个零件上， 而 且该零件是模具化的零件， 从而成功解决了精确重复定焦的难题。
以上三个难题的成功解决使太阳能的反射聚光利用达到了能大面积普及和推广的 水平。
本发明的实施例是将集热管 1设置在本发明的聚光装置上， 使集热管 1成为聚 光的焦点， 能大量的聚集太阳能热量， 比只用集热管收集太阳能的热量多 6-9倍， 达到 多收集热量， 加热出更高温度 （近于 100°C ) 的水的目的， 使太阳能热水不但能用于洗 澡还能用于取暖， 使太阳热水的利用更上一个台阶。 附图说明
图 1是本发明立体图；
图 2是图 1的主视图；
图 3是图 2的 A-A剖视图；
图 4是具有反光镀层的平面膜的结构剖视图；
图 5是面形定焦支架结构示意图；
图 6是微棱镜全反射聚光膜的结构示意图， 图中显示太阳光线在棱镜上全反射的光 路。
《附图中主要序号的说明》
1： 集热管； 2: 聚光膜； 2a:具有反光镀层的平面膜； 2b: 微棱镜全反射聚光膜； 3 : 面形底板； 4 ： 面形定焦支架； 4a: 面形定焦支架顶部光学曲面； 4b: 与面形定焦支架 一体的定焦结构； 6: 粘胶剂； 7: 透明塑料薄膜； 8: 反光镀层； 9: 保护膜层； 11 : 第 一平面； 12: 数字化曲面； 14: 第二平面； il、 i2、 Ϊ3 : 入射光线； rl、 r2、 r3:反射光线； f: 焦点。 具体实施方式
下面结合附图对本发明的实施例进一步详述。
图 1是本发明立体图； 图 2是图 1的主视图； 图 3是图 2的 A-A剖视图; 图 4是具有反光镀层的平面膜的结构剖视图； 图 5是面形定焦支架结构示意图； 图 6是微棱镜全反射聚光膜的结构示意图， 图中显示太阳光线在棱镜上全反射的光路。
实施例一。
本发明提供一种薄膜太阳能反射聚光装置， 所述薄膜太阳能反射聚光装置包括： 聚 光膜 2、 面形底板 3和面形定焦支架 4。
如图 1、 图 2、 图 3所示， 所述聚光膜 2是具有反光镀层的平面膜 2a， 具有反光镀 层的平面膜 2a设置在面形底板 3顶部面上； 所述面形底板 3是薄板， 面形底板 3的底 面贴附在面形定焦支架 4顶部表面上， 并再现面形定焦支架 4顶部表面形状。
所述面形定焦支架 4包括： 面形定焦支架顶部光学曲面 4a和与面形定焦支架一体 的定焦结构 4b。 所述面形定焦支架顶部光学曲面 4a位于面形定焦支架 4顶部表面， 所 述与面形定焦支架一体的定焦结构 4b的中心点位于面形定焦支架顶部光学曲面 4a的焦 点
如图 4所示， 所述具有反光镀层的平面膜 2a的结构是： 在透明塑料薄膜 7—个侧 面上镀反光镀层 8， 再在反光镀层 8上涂覆保护膜层 9; 在透明塑料薄膜 7另一个侧面 上涂覆粘胶剂 6。
当所述聚光膜 2是具有反光镀层的平面膜 2a时， 所述面形底板 3的形状是抛物面。 当所述聚光膜 2是具有反光镀层的平面膜 2a时， 所述面形定焦支架顶部光学曲面 4a是抛物柱面； 所述面形定焦支架顶部光学曲面 4a和与面形定焦支架一体的定焦结构 4b为一体结构或是精确定位的机械连接结构。
本发明还包括有集热管 1， 所述集热管 1的中心和与面形定焦支架一体的定焦结构 4b的中心点重合。
本发明实施例一制作过程如下：
本发明先制造顶部表面为精确抛物面的面形定焦支架 4，再将小于 0.5mm薄的面形 底板 3贴附在面形定焦支架 4的上部表面上，这样能保证柔软的面形底板 3精确地再现 面形定焦支架 4上部抛物面形状；将具有反光镀层的聚光膜 2a平整的粘附于面形底板 3 上表面， 再将集热管 1插入面形定焦支架 4上的与面形定焦支架一体的定焦结构 4b的 孔中， 这样就完成了本发明的薄膜太阳能反射聚光装置。
实施例二。
本发明提供一种薄膜太阳能反射聚光装置， 所述薄膜太阳能反射聚光装置包括： 聚 光膜 2、 面形底板 3和面形定焦支架 4。
如图 1、 图 2、 图 3所示， 所述聚光膜 2是微棱镜全反射聚光膜 2b， 微棱镜全反射 聚光膜 2b设置在面形底板 3顶部面上； 所述面形底板 3是薄板， 面形底板 3的底面贴 附在面形定焦支架 4顶部表面上， 并再现面形定焦支架 4顶部表面形状； 所述面形定焦 支架 4包括： 面形定焦支架顶部光学曲面 4a和与面形定焦支架一体的定焦结构 4b， 所 述面形定焦支架顶部光学曲面 4a位于面形定焦支架 4顶部表面， 所述与面形定焦支架 一体的定焦结构 4b的中心点位于面形定焦支架顶部光学曲面 4a的焦点 f。
如图 6所示， 所述微棱镜全反射聚光膜 2b的结构是： 在透明塑料薄膜上面形成多 个微小的棱镜。
所述聚光膜 2是微棱镜全反射聚光膜 2b时， 所述面形底板 3的形状是： 既能使微 棱镜全反射聚光膜 2b上的棱镜满足全反射条件， 又能保证反射光线聚在一个焦点 f上。
所述聚光膜 2是微棱镜全反射聚光膜 2b时， 所述面形定焦支架顶部光学曲面 4a是 数字化的柱面， 该数字化的柱面是： 平行于光轴的入射光线 il、 i2、 i3经过第一平面 11 折射后落在数字化曲面 12上， 再经过数字化曲面 12全反射到第二平面 14上， 经过第 二个平面 14折射后的反射光线 rl、 r2、 r3聚在同一个焦点 f上。
本发明还包括有集热管 1， 所述集热管 1的中心和与面形定焦支架一体的定焦结构 4b的中心点重合。
本发明实施例二制作过程如下：
本发明先制造顶部表面为精确的数字化曲面 12的面形定焦支架 4，再将小于 0.5mm 薄的面形底板 3贴附在面形定焦支架 4的上部表面上，这样能保证柔软的面形底板 3精 确地再现面形定焦支架 4上部数字化曲面 12的形状； 将微棱镜全反射聚光膜 2b平整的 粘附于面形底板 3上表面， 再将集热管 1插入面形定焦支架 4上的与面形定焦支架一体 的定焦结构 4b的孔中， 这样就完成了本发明的薄膜太阳能反射聚光装置。

Claims

权利要求书
1.一种薄膜太阳能反射聚光装置，其特征在于，所述薄膜太阳能反射聚光装置包括: 聚光膜 （2)、 面形底板 （3 ) 和面形定焦支架 （4); 所述聚光膜 （2) 是具有反光镀层的 平面膜 （2a)， 具有反光镀层的平面膜 （2a) 设置在面形底板 （3 ) 顶部面上； 所述面形 底板 （3 ) 是薄板， 面形底板 （3 ) 的底面贴附在面形定焦支架 （4 ) 顶部表面上， 并再 现面形定焦支架 （4)顶部表面形状； 所述面形定焦支架 （4)包括： 面形定焦支架顶部 光学曲面 （4a) 和与面形定焦支架一体的定焦结构 （4b)， 所述面形定焦支架顶部光学 曲面（4a)位于面形定焦支架（4 )顶部表面， 所述与面形定焦支架一体的定焦结构（4b) 的中心点位于面形定焦支架顶部光学曲面 （4a) 的焦点 （0。
2. 根据权利要求 1中所述的一种薄膜太阳能反射聚光装置，其特征在于，所述具有 反光镀层的平面膜 （2a) 的结构是： 在透明塑料薄膜 （7) —个侧面上镀反光镀层 （8)， 再在反光镀层 （8 ) 上涂覆保护膜层 （9); 在透明塑料薄膜 （7) 另一个侧面上涂覆粘胶 剂 （6)。
3. 根据权利要求 1中所述的一种薄膜太阳能反射聚光装置，其特征在于，所述面形 底板 （3 ) 的形状是抛物面。
4.根据权利要求 1所述的一种薄膜太阳能反射聚光装置， 其特征在于， 所述面形定 焦支架顶部光学曲面 （4a) 是抛物柱面； 所述面形定焦支架顶部光学曲面 （4a) 和与面 形定焦支架一体的定焦结构 （4b) 为一体结构或是精确定位的机械连接结构。
5.—种薄膜太阳能反射聚光装置，其特征在于，所述薄膜太阳能反射聚光装置包括: 聚光膜 （2)、 面形底板 （3 ) 和面形定焦支架 （4); 所述聚光膜 （2) 是微棱镜全反射聚 光膜 （2b)， 微棱镜全反射聚光膜 （2b) 设置在面形底板 （3 ) 顶部面上； 所述面形底板
( 3 ) 是薄板， 面形底板 （3 ) 的底面贴附在面形定焦支架 （4) 顶部表面上， 并再现面 形定焦支架 （4)顶部表面形状； 所述面形定焦支架 （4)包括： 面形定焦支架顶部光学 曲面 （4a) 和与面形定焦支架一体的定焦结构 （4b)， 所述面形定焦支架顶部光学曲面
(4a) 位于面形定焦支架 （4 ) 顶部表面， 所述与面形定焦支架一体的定焦结构 （4b ) 的中心点位于面形定焦支架顶部光学曲面 （4a) 的焦点 （0。
6. 根据权利要求 5中所述的一种薄膜太阳能反射聚光装置，其特征在于，所述微棱 镜全反射聚光膜 （2b) 的结构是： 在透明塑料薄膜上面形成多个微小的棱镜。
7. 根据权利要求 5中所述的一种薄膜太阳能反射聚光装置，其特征在于，所述面形 底板 （3 ) 的形状是： 既能使微棱镜全反射聚光膜 （2b ) 上的棱镜满足全反射条件， 又 能保证反射光线聚在一个焦点 （f) 上。
8.根据权利要求 5所述的一种薄膜太阳能反射聚光装置， 其特征在于， 所述面形定 焦支架顶部光学曲面 （4a) 是数字化的柱面， 该数字化的柱面是： 平行于光轴的入射光 线 （il、 i2、 13) 经过第一平面 （11) 折射后落在数字化曲面 （12) 上， 再经过数字化 曲面 （12)全反射到第二平面 （14)上， 经过第二个平面 （14)折射后的反射光线 （rl、 r2、 r3) 聚在同一个焦点 （0 上。
9. 根据权利要求 1或 5中所述的一种薄膜太阳能反射聚光装置，其特征在于，还包 括有集热管 （1)， 所述集热管 （1) 的中心和与面形定焦支架一体的定焦结构 （4b) 的 中心点重合。
PCT/CN2011/071121 2010-03-02 2011-02-21 一种薄膜太阳能反射聚光装置 WO2011107008A1 (zh)

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