WO2014029349A1 - Condensateur à matrice de lentilles - Google Patents

Condensateur à matrice de lentilles Download PDF

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Publication number
WO2014029349A1
WO2014029349A1 PCT/CN2013/082069 CN2013082069W WO2014029349A1 WO 2014029349 A1 WO2014029349 A1 WO 2014029349A1 CN 2013082069 W CN2013082069 W CN 2013082069W WO 2014029349 A1 WO2014029349 A1 WO 2014029349A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens unit
substrate
array
support
condenser
Prior art date
Application number
PCT/CN2013/082069
Other languages
English (en)
Chinese (zh)
Inventor
杨永顺
Original Assignee
Yang Yongshun
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yang Yongshun filed Critical Yang Yongshun
Publication of WO2014029349A1 publication Critical patent/WO2014029349A1/fr

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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
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/77—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with flat reflective plates
    • 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)
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
    • 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
    • F24S2023/87—Reflectors layout
    • F24S2023/872—Assemblies of spaced reflective elements on common support, e.g. Fresnel reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors
    • 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 present disclosure relates to the field of solar energy utilization technologies, and in particular, to a lens unit array concentrating mirror. Background technique
  • Solar energy is a clean and renewable energy source. Therefore, people are paying more and more attention to the use of solar energy.
  • Various devices using solar energy have been gradually developed. Among them, heat preparation using solar energy for heating, such as solar water heaters, hot air machines, etc. Great progress has also been made.
  • a hot air machine also known as a Stirling engine or an external combustion engine, is an externally fired closed-loop reciprocating piston type heat engine.
  • the medium that transfers energy in a hot air machine (usually a high-pressure gas) is called a working medium, and is filled with a certain volume of working fluid in one, two, four or more closed cylinders.
  • One end of the cylinder is a hot chamber and the other end is a cold chamber.
  • the working fluid is compressed in a low temperature cold chamber, and then flows into a high temperature hot chamber to rapidly heat and expand to perform work.
  • the advantage of the hot air machine is that the power and efficiency are not affected by the altitude, which is very suitable for high altitude use. Since the heat engine avoids the problem of the shocking work of the conventional internal combustion engine, low noise, low pollution, and low running cost are achieved. As long as a certain temperature difference is reached between the hot chamber and the cold chamber of the hot air machine, the hot air machine can perform the work.
  • the hot air machine can burn various flammable gases or liquid fuels to heat the hot chamber, but it is more efficient to use solar energy for heating at high altitude and sunny places.
  • the use of solar energy to heat the hot chamber is preferably by placing the hot chamber of the hot air machine at the focus of the concentrating mirror and concentrating the sunlight to the focus to heat the hot chamber.
  • parabolic concentrators For concentrating mirrors, parabolic concentrators have a good concentrating effect that converge parallel rays at one point.
  • the rotating paraboloid of the parabolic concentrator (the surface obtained by rotating the parabola along its axis of symmetry, the cross section of which is a circle) is relatively large.
  • This large-area parabolic concentrating mirror has a complicated manufacturing process and high cost. It costs at least 500 yuan per square meter, and even has a good workmanship of about 10,000 yuan.
  • the focus will deviate from the original when it is inflated and contracted. The focus, which affects the concentrating effect.
  • an object of the present disclosure is to provide a concentrating mirror capable of manufacturing a simple process, low cost, and good concentrating effect, so as to solve the technical problem that the concentrating mirror of the prior art is not cost-effective.
  • a lens unit array concentrating mirror comprising: a substrate having a flat bottom surface, a concentrating focus above the substrate; an array of support members disposed on an upper surface of the substrate; and each support member constituting the array of support members a lens unit to which the support surface is connected, the lens unit is disposed facing the concentrating focus, the lens unit is a rectangular plane, and the reflected light of the incident light perpendicular to the substrate is at a geometric center point of each of the lens units Light is concentrated on the focus of the light.
  • the lens unit array concentrating mirror of the present disclosure has the advantages of low manufacturing cost, simple process, and good condensing performance.
  • the lens unit array concentrating mirror of the present disclosure can reduce the manufacturing cost to less than 300 yuan per square meter, which is much lower than the cost of the prior art; in addition, since the substrate of the lens unit array concentrating mirror of the present disclosure is a planar substrate, it is convenient Processing, also facilitates setting or integrally forming a support array on the substrate; the lens unit array concentrating mirror of the present disclosure, the geometric center point of each lens unit is concentrated on the concentrating focus, and the lens unit is small due to the small lens unit area The upper points have similar concentrating properties, so the concentrating performance of the entire lens unit array concentrating mirror is good.
  • FIG. 1 is a schematic view of a lens unit array concentrating mirror of a first embodiment of the present disclosure.
  • FIG. 2 is a schematic cross-sectional view showing a diagonal position of a lens unit array condensing mirror according to a first embodiment of the present disclosure.
  • Figure 3 is a schematic diagram of the concentrating of the lens unit.
  • Fig. 4 is a schematic view showing the lens unit of the lens unit array condensing mirror of the first embodiment of the present invention attached to the support member.
  • FIG. 5 is a schematic view of a support member of a lens unit array concentrating mirror according to a first embodiment of the present disclosure.
  • FIG. 6 is a schematic view of a lens unit array concentrating mirror of a second embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a lens unit of a lens unit array concentrating mirror attached to a support member according to a second embodiment of the present disclosure.
  • FIG. 8 is a schematic view of a support member of a lens unit array concentrating mirror of a second embodiment of the present disclosure. detailed description
  • the lens unit array concentrating mirror of the preferred embodiment of the present disclosure will be specifically described below.
  • the lens unit array concentrating mirror of the present disclosure can be used for a hot air machine or for other solar energy utilization equipment that requires solar energy heating, such as a high power solar water heater.
  • a lens unit array concentrating mirror of an embodiment of the present disclosure includes a lens unit 1, a support member 2, and a substrate 3.
  • the number of rows and the number of columns of the lens unit 1 are 16, but not limited thereto.
  • the bottom surface 30 of the substrate 3 is a flat surface, so the substrate 3 is a planar substrate.
  • the distance between the center points Q can be determined by the area of the concentrator that is actually required. The larger the area of the concentrating mirror, the larger the distance between the concentrating focus 0 and the geometric center point Q of the substrate.
  • the support member 2 or the lens unit 1 which is relatively close to the geometric center point Q of the substrate is an inner layer
  • the support member 2 or the lens unit 1 which is relatively far from the geometric center point Q of the substrate is an outer layer, for example, the innermost lens unit 1 is four.
  • the outermost lens unit is four (lens unit 1 in four angular positions).
  • the upper surface of the substrate 3 is formed with an array of supports.
  • the array of supports includes a plurality of rows and columns of support members 2.
  • the number of rows and the number of columns of the support array are the same, but not limited thereto.
  • the number of rows and the number of columns may be different.
  • each support member 2 supports a lens unit 1; in the present specification, the surface of the support member 2 connected to the lens unit 1 is referred to as a support surface, and since the support surface is, for example, a flat surface, It may be referred to as a support plane, and the geometric center point P of the support plane of each support member 2 is, for example, at the same height, or on the same plane perpendicular to the line connecting the geometric center point Q of the substrate and the focus point 0, and the same line.
  • the geometric center point P of the support plane of each support member 2 is collinear and the distance (row spacing) of two adjacent geometric center points P is equal, and the geometric center point P of the support plane of each support member 2 on the same column is also The distances (column spacing) of the two collinear lines and adjacent geometric center points P are equal, and the line spacing is equal to the column spacing.
  • the geometric center points of the respective support members 2 are, for example, at the same height, such that the lowest point of the mounted lens unit 1 is not higher than the highest point of the lens unit 1 of the inner layer adjacent to the lens unit 1.
  • the height of the support member 2 is not too high, which is advantageous for the production of the mold and reduces the cost of the condensing mirror.
  • the advantage that the lowest point of the mounted lens unit 1 is not higher than the highest point of the lens unit 1 of the adjacent inner layer is that the height difference between adjacent lens units 1 can be given Fixing the lens unit on the struts 2 leaves a suitable operating space.
  • the distance between the adjacent two lens units 1 is also kept at a distance of 2-5 mm.
  • the height of the geometric center point of the support member 2 of the opposite outer layer is higher than the height of the geometric center point of the support member 2 of the inner layer.
  • the lens unit 1 is disposed facing the concentrating focus 0, and the lens unit 1 is a rectangular plane, for example, a square plane, and the square length of the lens unit 1 may be between 100 mm and 500 mm, for example, 100 mm, 15 Omm, 200 mm, 300 mm or 500 mm. .
  • FIG. 3 the incident light a of the lens unit 1 parallel to the line d of the geometric center point Q of the substrate and the line d of the concentrating focus 0 is reflected by the lens unit 1 after the reflected light b at the geometric center point P of each lens unit 1 is reflected.
  • Converging at the concentrating focus 0, FIG. 3 can also be regarded as a graph obtained by the plane lens unit 1 determined by three points of 0, P, and Q.
  • the solid line N is the normal of the lens unit 1, and the broken line e is parallel to the method.
  • Line N, dashed line d is on the line connecting the geometric center point Q of the substrate and the focus point 0, and the broken line c is perpendicular to the line d.
  • Figure 3 also shows how to determine the set angle of each lens unit 1.
  • the lens unit 1 as a plane is necessarily perpendicular to the normal of each position on the lens unit 1, and must also be perpendicular to the normal (or normal vector) N of the lens unit 1 at its geometric center point P, then the normal is determined. N, the setting angle of the lens unit 1 can be determined.
  • the incident light a corresponds to a ray whose source point is the geometric center point P of the lens unit 1 and extends directly upward (that is, a direction parallel to the line connecting the geometric center point Q of the substrate and the focus point of the concentrating focus 0), and the reflected light b is equivalent.
  • the source point is then the geometric center point P of the lens unit 1 and extends through another concentrating focus 0, which is coplanar with the normal N at the geometric center point P of the lens unit 1, and the normal N bisects this The angle between the two rays. Therefore, by determining the above two rays, the normal line N at the geometric center point P of the lens unit 1 can be determined by the method of finding the angle bisector, thereby determining the setting angle of each lens unit 1.
  • the setting angle of the lens unit 1 can also be determined by determining the acute angle between the lens unit 1 and the bottom surface 30 of the substrate 3.
  • the lens unit 1 needs to be perpendicular to the geometric center point P of the lens unit 1 to collect light.
  • the focal plane 0 and the geometric center point of the substrate are determined by the distance from the geometric center point P of the lens unit 1 to the bottom surface 30 of the substrate 3.
  • the distance of the concentrating focus 0 from the bottom surface 30 of the substrate 3 is m
  • the distance from the geometric center point P of the lens unit 1 to the broken line d (that is, the distance between the two points P and R) is n
  • the acute angle b is equal to the acute angle
  • the acute angle between the lens unit 1 and the bottom surface 30 of the substrate 3 is ct
  • the acute angle between the solid line b and the broken line c is equal to 90 degrees minus twice the ct
  • the inverse trigonometric function is operated.
  • the concentrating focus O may not be directly above the geometric center point of the substrate 3.
  • the incident light is still perpendicular to the substrate 3, but is not parallel to the geometric center point Q and the concentrating focus of the substrate.
  • the incident light perpendicular to the substrate 3 is concentrated at the geometric center point P of each lens unit 1 at the focus point 0 of the lens unit 1, and is still used to find the incident light and the reflected light.
  • the angle bisector method determines the normal N at the geometric center point P of the lens unit 1, and thereby determines the set angle of each lens unit 1.
  • the lens unit 1 and the bottom surface 30 of the substrate 3 are: Here, h is still the distance from the geometric center point P of the lens unit 1 from the bottom surface 30 of the substrate 3, m is still the distance of the concentrating focus 0 from the bottom surface 30 of the substrate 3, and n is still the geometric center point P of the lens unit 1 The distance between the focus of the concentrating focus 0 and the projection point of the concentrating focus 0 on the bottom surface 30, where the lens unit 1 is still perpendicular to the geometric center point P, the concentrating focus 0 and the concentrating focus 1 of the lens unit 1 The plane defined by the projection point on the bottom surface 30 of the substrate 3.
  • the concentrating focus 0 is not directly above any point on the substrate 3, but directly above a certain point on the plane of the bottom surface 30 of the substrate 3 outside the substrate 3, that is, the projection of the concentrating focus 0 on the substrate 3.
  • the point is not in the bottom surface 30, but in the plane in which the bottom surface 30 is located, the projection point of the concentrating focus 0 in the plane of the bottom surface 30 is the projection point of the concentrating focus 0 at the bottom surface 30 to calculate the above angle.
  • the number of rows or columns of the support member 2 of the support array ranges from 16 to 160, due to the support member 2 and the lens
  • the units 1 are in one-to-one correspondence, so the number of rows or columns of the lens unit 1 is also in the same range, and the number of rows or columns can be divisible by, for example, 16, 32, 64, 128 or 160, etc.
  • the advantage that the number of rows or columns can be divisible by four is that, for example, a 16-row 16-column lens unit 1 array concentrating mirror requires only four sets of the same mold, that is, four substrate units 31, 32, 33, 34 are prepared.
  • each of the substrate units 31, 32, 33, 34 may be integrally formed with an array of 8 rows and 8 columns of supports, and the substrate 3 includes four substrate units 31, 32, 33, 34.
  • the lens unit array concentrating mirror may further include a frame holder such as a "field" shaped frame holder, and each of the substrate units 31, 32, 33, 34 is supported in one of the "mouth” shaped frame units of the frame holder.
  • the substrate unit 31, 32, 33, 34 and the support member array thereon may be integrally formed, for example, integrally injection molding, injection molding, or may be first formed into the substrate 3, and then A support member array is disposed on the substrate 3, and the support member 2 can be fixed on the substrate by screws, and the substrate 3 can be metal or polymer. Material.
  • the shape of the support member may be a cylindrical shape or a regular square prism shape or the like.
  • the lens unit array concentrating mirror of the first embodiment of the present disclosure has a support member 2 having a square prism shape, and the support member 2 includes a support plane 26, a chamfer 27 and a support body 28.
  • the chamfer 27 is a chamfer between the support plane 26 and the support body 28.
  • the lens unit 1 can be attached to the support surface by gluing, or it can be connected to the support surface by screws, snaps or snaps.
  • the lens unit array concentrating mirror of the second embodiment of the present disclosure has a support member 2 having a cylindrical shape, and the support member 2 includes a support plane 21, a chamfer 22 and a support body 23,
  • the corner 22 is a chamfer between the support plane 26 and the cylindrical surface of the support body 28.
  • the area of the lens unit 1 is larger than the area of the support plane 21, which facilitates the attachment or attachment of the lens unit 1.
  • the lens unit array concentrating mirror of the embodiment of the present disclosure has the advantages of low manufacturing cost, simple process, and good condensing performance.
  • the lens unit array concentrating mirror of the present disclosure can reduce the total manufacturing cost to less than 300 yuan per square meter, which is greatly reduced compared with the cost of the prior art; in addition, since the substrate 3 of the lens unit array concentrating mirror of the present disclosure is a planar substrate, Therefore, it is convenient to process, and it is also convenient to arrange or integrally form the support array on the substrate 3; the lens unit array concentrating mirror of the present disclosure, the geometric center point P of each lens unit 1 is concentrated on the concentrating focus 0, due to the lens unit 1 The area is small, so that each point on the lens unit 1 has an approximate condensing property, so that the concentrating performance of the concentrating mirror of the entire lens unit array is good.

Abstract

L'invention concerne un condensateur à matrice de lentilles comprenant : un substrat (3) présentant une surface inférieure plane et au-dessus duquel se trouve un point focal de condensation (0); une matrice de pièces de support disposée sur la surface supérieure du substrat; et une lentille (1) raccordée à la surface de support de chaque pièce de support (2) formant la matrice de pièces de support. La lentille est un plan rectangulaire et est disposée de façon à être orientée vers le point focal de condensation. La lumière incidente perpendiculaire au substrat est renvoyée par le centre géométrique de chaque lentille, et la lumière réfléchie est condensée au niveau du point focal de condensation. Le condensateur à matrice de lentilles est obtenu selon un procédé de fabrication simple, de faible coût, et a un bon effet de condensation.
PCT/CN2013/082069 2012-08-24 2013-08-22 Condensateur à matrice de lentilles WO2014029349A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2012103060965A CN102798969A (zh) 2012-08-24 2012-08-24 镜片单元阵列聚光镜
CN201210306096.5 2012-08-24

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Publication Number Publication Date
WO2014029349A1 true WO2014029349A1 (fr) 2014-02-27

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PCT/CN2013/082069 WO2014029349A1 (fr) 2012-08-24 2013-08-22 Condensateur à matrice de lentilles

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CN (1) CN102798969A (fr)
WO (1) WO2014029349A1 (fr)

Families Citing this family (2)

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CN102798969A (zh) * 2012-08-24 2012-11-28 杨永顺 镜片单元阵列聚光镜
CN104006543B (zh) * 2014-05-12 2016-01-20 上海萃智工业技术有限公司 一种分离式平面太阳灶

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CN101344020A (zh) * 2007-07-11 2009-01-14 卢剑超 太阳能塔式聚焦高温集热蒸汽锅炉-汽轮机发电装置
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