CN220019922U - Fresnel columnar lens array for solar photo-thermal utilization - Google Patents
Fresnel columnar lens array for solar photo-thermal utilization Download PDFInfo
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- CN220019922U CN220019922U CN202321379013.5U CN202321379013U CN220019922U CN 220019922 U CN220019922 U CN 220019922U CN 202321379013 U CN202321379013 U CN 202321379013U CN 220019922 U CN220019922 U CN 220019922U
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- 239000000758 substrate Substances 0.000 claims abstract description 96
- 239000000463 material Substances 0.000 claims description 7
- 239000005304 optical glass Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a Fresnel columnar lens array for solar photo-thermal utilization, and belongs to the field of new energy. The utility model provides a Fresnel columnar lens array for solar photo-thermal utilization, which aims at solving the problems of low solar energy conversion efficiency and high cost of the existing lens, and comprises a substrate and a plurality of Fresnel columnar lenses which are stacked with the substrate, wherein the Fresnel columnar lenses comprise a first surface connected with the substrate and a second surface used for refracting light rays; the plurality of Fresnel columnar lenses are sequentially connected along the first direction of the substrate, and the lengths of the Fresnel columnar lenses extend along the second direction of the substrate so as to cover the part of the substrate in the second direction; so that the plurality of fresnel cylindrical lenses overlap the substrate. According to the utility model, the plurality of Fresnel columnar lenses are overlapped with the substrate, so that the energy from the sun is received as much as possible, and the solar energy conversion utilization rate is improved.
Description
Technical Field
The utility model belongs to the technical field of new energy sources for solar photo-thermal utilization, and particularly relates to a Fresnel columnar lens array for solar photo-thermal utilization.
Background
Solar energy is the heat radiation energy of the sun, which is mainly expressed as solar rays, and has become an important component of energy sources for human use and has been continuously developed. Because of the low energy density of solar energy, the basic principle of photo-thermal utilization is to collect solar radiation light energy, and utilize the solar radiation light energy in the form of heat energy through mutual exchange and transmission among different media, so that the development and utilization of solar energy are important directions of future energy development. Most of the existing solar photo-thermal utilization technologies utilize a convex lens array, wherein the convex lens is a common lens, and the middle of the convex lens is thick and the two sides of the convex lens are thin; parallel rays (such as sunlight) can be injected into the convex lens parallel to the main optical axis (the line connecting the spherical centers of the two spherical surfaces of the convex lens is called the main optical axis of the lens), and after two refractions on the two surfaces of the lens, the light is concentrated on one point on the axis, which is called the focal point of the convex lens, and the solar light and heat are concentrated on the point. However, the existing convex lens array has low light and heat utilization efficiency and complicated installation.
Such as chinese patent application number CN202221865609.1, publication day 2022, 11, 15, which discloses a lenticular lens array for solar photo-thermal utilization, comprising a substrate and a lenticular lens; the substrate is in a plate shape with two smooth surfaces, one surface of the biconvex lens is horizontal, and the other surface of the biconvex lens is a smooth surface with a thick middle and a thin edge; a plurality of biconvex lenses are uniformly distributed on the upper surface and the lower surface of the substrate, and the horizontal surface of each biconvex lens is connected with the substrate; the lenticular lens connected above the substrate and the lenticular lens connected below the substrate are symmetrical with respect to the substrate. The disadvantage of this patent is that: the solar energy conversion utilization rate is low.
Disclosure of Invention
1. Problems to be solved
Aiming at the problems of low solar energy conversion efficiency and high cost of the existing lens, the utility model provides a Fresnel columnar lens array for solar photo-thermal utilization. According to the utility model, the plurality of Fresnel columnar lenses are overlapped with the substrate, so that as much energy from the sun as possible is received, and meanwhile, sunlight is converged into high-temperature light, so that the solar energy conversion utilization rate is improved;
2. technical proposal
In order to solve the problems, the utility model adopts the following technical scheme.
The Fresnel columnar lens array comprises a substrate and a plurality of Fresnel columnar lenses which are stacked with the substrate, wherein the Fresnel columnar lenses comprise a first surface connected with the substrate and a second surface used for refracting light, and the second surface is used for converging the light into a light column; the maximum thickness of the Fresnel columnar lens is 28-30 mm;
the plurality of Fresnel columnar lenses are sequentially connected along the first direction of the substrate, and the lengths of the Fresnel columnar lenses extend along the second direction of the substrate so as to cover the part of the substrate in the second direction; and the first direction of the substrate is perpendicular to the second direction, so that the plurality of Fresnel columnar lenses and the substrate are stacked, and the substrate extends out of the plurality of Fresnel columnar lenses in the first direction and forms a mounting part.
Further, the substrate is rectangular, and the first direction of the substrate is the length direction of the substrate; the second direction of the substrate is the width direction of the substrate.
Further, the plurality of fresnel cylindrical lenses are the same in size, and the first surface of the fresnel cylindrical lens is a plane.
Further, the substrate and the Fresnel columnar lens are integrally connected.
Furthermore, the substrate and the Fresnel columnar lens are made of the same material.
Furthermore, the substrate and the Fresnel columnar lens are both made of optical glass.
3. Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, the plurality of Fresnel columnar lenses are arranged along the first direction and the second direction of the substrate, so that the plurality of Fresnel columnar lenses are laminated with the substrate, more energy from the sun is received as much as possible, more solar energy is subjected to photo-thermal convergence to form a strip-shaped high-temperature line, and the solar energy conversion utilization rate is improved; meanwhile, compared with the traditional columnar lens, the Fresnel columnar lens has the advantages of thin thickness, light weight and low cost; the maximum thickness of the Fresnel columnar lens is limited, so that the cost and the Fresnel columnar lens performance are well considered; the whole Fresnel columnar lens array has a simple structure and is convenient to install, so that the energy flow density of solar heat energy is effectively improved, and the solar energy conversion and utilization efficiency is improved;
(2) The substrate is rectangular, and the regular shape is more convenient for the installation of the Fresnel columnar lens on the substrate; the plurality of Fresnel columnar lenses are sequentially connected along the length direction of the substrate, and the lengths of the Fresnel columnar lenses are the same as the width direction of the substrate, so that gaps do not exist in the arrangement of the Fresnel columnar lenses on the substrate, and the solar energy conversion and utilization efficiency is further improved;
(3) The plurality of Fresnel columnar lenses are set to be the same in size, so that the Fresnel lens is further convenient to install; meanwhile, the damage of a single Fresnel columnar lens does not affect the use of the whole array, so that the maintenance and the replacement are more convenient, the maintenance cost is reduced, and the maintenance efficiency is improved; meanwhile, the first surface of the Fresnel cylindrical lens is a smooth plane, so that connection with the substrate can be better realized, the Fresnel cylindrical lens and the substrate are more attached, and the connection is firmer;
(4) According to the utility model, the materials of the substrate and the Fresnel columnar lens are the same, so that the connection between the substrate and the Fresnel columnar lens is facilitated, and meanwhile, the Fresnel columnar lens and the substrate are integrally formed, so that the processing is convenient; and the substrate and the Fresnel columnar lens are made of optical glass, and have the advantages of high transparency, high light transmittance, good temperature resistance, long service life, good light refraction capability and the like, so that the higher performance of the Fresnel columnar lens array is further ensured.
Drawings
FIG. 1 is a plan view of an overall array with a substrate down and Fresnel lenticular lenses up;
FIG. 2 is a cross-sectional view of the view of FIG. 1;
FIG. 3 is a cross-sectional view of the device of FIG. 1 from another corresponding view;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a plan view of the entire array with the substrate on top and the Fresnel lenticular lens on bottom;
FIG. 6 is a cross-sectional view of the view of FIG. 5;
FIG. 7 is a cross-sectional view of the device of FIG. 5 from another corresponding view;
FIG. 8 is an enlarged view of a portion of FIG. 7;
fig. 9 is a schematic perspective view of the present utility model.
In the figure: 1. a substrate; 2. fresnel cylindrical lenses.
Detailed Description
The utility model is further described below in connection with specific embodiments and the accompanying drawings.
Example 1
As shown in fig. 9, a fresnel cylindrical lens array for solar photothermal use includes a substrate 1, and a plurality of fresnel cylindrical lenses 2 stacked on the substrate 1, wherein the plurality of fresnel cylindrical lenses 2 are distributed on the substrate 1 to form a fresnel cylindrical lens array for refracting sunlight. The fresnel cylindrical lens 2 comprises a first surface connected with the substrate 1 and a second surface for refracting light, wherein the second surface is used for converging the light into a light column, and illumination is high-temperature light. In this description, the first surface of the fresnel cylindrical lens 2 and the substrate 1 are arranged in two ways, one is that the first surface of the fresnel cylindrical lens 2 is on the top, and the substrate 1 is on the bottom, as shown in fig. 1 to 4; the other is that the first surface in the fresnel cylindrical lens 2 is under, and the substrate 1 is above, as shown in fig. 5 to 8. The maximum thickness of the Fresnel columnar lens 2 is 28-30 mm; in order to further improve the photo-thermal utilization efficiency of the Fresnel columnar lens array, according to the principles that the smaller the curvature radius of the lens is, the smaller the focal length is and the larger the caliber is, the better the energy gathering effect is, the corresponding balance relation is considered among the parameters, the maximum thickness in the Fresnel columnar lens 2 is selected to be 28-30 mm, the material cost of conversion utilization is greatly reduced, the cost performance relation of the lens is well mastered, the high-temperature effect of photo-thermal utilization up to 450-650 ℃ is obtained, the manufacturing cost is controlled, and the photo-thermal utilization with high cost performance is realized.
The plurality of Fresnel columnar lenses 2 are sequentially connected along the first direction of the substrate, and the lengths of the Fresnel columnar lenses 2 extend along the second direction of the substrate 1 so as to cover the part of the substrate 1 in the second direction; and the first direction of the substrate 1 is perpendicular to the second direction, so that the plurality of fresnel cylindrical lenses 2 and the substrate 1 are stacked, and the substrate 1 extends out of the plurality of fresnel cylindrical lenses 2 in the first direction and forms a mounting portion for mounting the fresnel cylindrical lenses 2 on the substrate 1. The Fresnel columnar lenses 2 are shaped so that gaps do not exist in the installation of the Fresnel columnar lenses on the substrate 1, and meanwhile, gaps do not exist between two adjacent Fresnel columnar lenses 2, so that the solar energy conversion utilization efficiency of the whole Fresnel columnar lens array is improved.
In one embodiment, the second surface of the fresnel cylindrical lens 2 is a cylindrical surface, and prismatic strips are arranged on the cylindrical surface according to a certain rule, so that the plane projection shape of the fresnel cylindrical lens 2 is rectangular; the first surface of the Fresnel cylindrical lens 2 is a smooth horizontal plane, the parallel incident sunlight is refracted through the second surface of the Fresnel cylindrical lens 2, a focusing line is generated on the focal plane after refraction, and the received sunlight heat energy is converged on each array focal line, so that high-temperature solar heat of 500-1200 ℃ is obtained.
In one embodiment, the substrate 1 is rectangular, and the regular shape is more convenient for the installation of the Fresnel columnar lens 2 on the substrate 1; the first direction of the substrate 1 is the length direction of the substrate 1; the second direction of the substrate 1 is the width direction of the substrate 1. That is, the plurality of fresnel cylindrical lenses 2 are sequentially connected along the length direction of the substrate 1 such that the plurality of fresnel cylindrical lenses 2 cover the length direction of the substrate 1; meanwhile, the length of the Fresnel columnar lenses 2 extends along the width direction of the substrate 1, so that the length of the Fresnel columnar lenses 2 is the same as the width of the substrate 1, and finally, the lamination of a plurality of Fresnel columnar lenses 2 on the substrate 1 is realized.
According to the utility model, the plurality of Fresnel columnar lenses are arranged along the first direction and the second direction of the substrate, so that the plurality of Fresnel columnar lenses are overlapped with the substrate, more solar energy is received as much as possible, more solar energy is subjected to photo-thermal convergence to form a strip-shaped high-temperature line, the energy density of solar heat energy is greatly improved, the temperature can reach 800-1000 ℃, and the solar energy conversion utilization rate is effectively improved; meanwhile, compared with the traditional columnar lens, the Fresnel columnar lens has the advantages of thin thickness, light weight and low cost; the maximum thickness of the Fresnel columnar lens is limited, so that the cost and the Fresnel columnar lens performance are well considered; the whole Fresnel columnar lens array has a simple structure, is convenient to install, effectively improves the energy flow density of solar heat energy, and improves the solar energy conversion utilization efficiency, so that the Fresnel columnar lens array not only can be used for preparing solar light and heat utilization of middle and low temperatures of domestic hot water, heating and the like, but also can be used in the field of solar high-temperature utilization of the solar energy with the temperature of 500-1200 ℃ and the like, and has wide application.
Example 2
Basically the same as embodiment 1, in this embodiment, the plurality of fresnel cylindrical lenses 2 have the same size, that is, the same shape and size, and the same size is set to make the installation of the fresnel cylindrical lenses 2 on the substrate 1 more convenient and simple, and improve the installation efficiency; secondly, the damage of the single Fresnel cylindrical lens 2 can be convenient to maintain and replace, the maintenance efficiency is improved, and the maintenance cost is reduced. And the first surface of fresnel cylindrical lens 2 is the plane, because fresnel cylindrical lens 2's first surface is connected with base plate 1, and base plate 1 is smooth platy, consequently also set up the first surface as smooth plane, makes it can be connected with the better realization of base plate 1 for laminate more between the two, connect more firmly. And still further, base plate 1 with fresnel cylindrical lens 2 integrated into one piece connects, and its processing is convenient and integrated into one piece's setting makes fresnel cylindrical lens 2 arrangement stability on base plate 1 higher, further ensures fresnel cylindrical lens 2's effect.
Meanwhile, in this embodiment, the substrate 1 and the fresnel cylindrical lens 2 are made of the same material, so as to avoid mutual interference between different materials. Preferably, the materials of the substrate 1 and the fresnel cylindrical lens 2 are optical glass, and the fresnel cylindrical lens 2 is optical glass, so that the fresnel cylindrical lens has the advantages of high transparency, high light transmittance, good temperature resistance, long service life, good light refraction capability and the like, and further ensures higher performance of the fresnel cylindrical lens array.
The examples of the present utility model are merely for describing the preferred embodiments of the present utility model, and are not intended to limit the spirit and scope of the present utility model, and those skilled in the art should make various changes and modifications to the technical solution of the present utility model without departing from the spirit of the present utility model.
Claims (6)
1. A Fresnel columnar lens array for solar photo-thermal utilization is characterized in that: the light beam focusing device comprises a substrate (1) and a plurality of Fresnel columnar lenses (2) which are stacked with the substrate (1), wherein the Fresnel columnar lenses (2) comprise a first surface connected with the substrate (1) and a second surface used for refracting light, and the second surface is used for converging the light into a light beam;
the plurality of Fresnel columnar lenses (2) are sequentially connected along the first direction of the substrate (1), and the lengths of the Fresnel columnar lenses (2) extend along the second direction of the substrate (1) so as to cover the part of the substrate (1) in the second direction; and the first direction of the substrate (1) is perpendicular to the second direction, so that the plurality of Fresnel columnar lenses (2) and the substrate (1) are stacked, and the substrate (1) extends out of the plurality of Fresnel columnar lenses (2) in the first direction and forms a mounting part.
2. The fresnel cylindrical lens array for solar photothermal utilization of claim 1, wherein: the substrate (1) is rectangular, and the first direction of the substrate (1) is the length direction of the substrate (1); the second direction of the substrate (1) is the width direction of the substrate (1).
3. A fresnel cylindrical lens array for solar photothermal utilization according to claim 2, wherein: the plurality of Fresnel cylindrical lenses (2) are identical in size, and the first surface of each Fresnel cylindrical lens (2) is a plane.
4. The fresnel cylindrical lens array for solar photothermal utilization of claim 1, wherein: the base plate (1) and the Fresnel columnar lens (2) are integrally connected.
5. A fresnel cylindrical lens array for solar photothermal utilization according to claim 1 or 4, wherein: the substrate (1) and the Fresnel cylindrical lens (2) are made of the same material.
6. The fresnel cylindrical lens array for solar photothermal utilization of claim 5, wherein: the substrate (1) and the Fresnel columnar lens (2) are made of optical glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321379013.5U CN220019922U (en) | 2023-06-01 | 2023-06-01 | Fresnel columnar lens array for solar photo-thermal utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321379013.5U CN220019922U (en) | 2023-06-01 | 2023-06-01 | Fresnel columnar lens array for solar photo-thermal utilization |
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| Publication Number | Publication Date |
|---|---|
| CN220019922U true CN220019922U (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321379013.5U Active CN220019922U (en) | 2023-06-01 | 2023-06-01 | Fresnel columnar lens array for solar photo-thermal utilization |
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| Country | Link |
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| CN (1) | CN220019922U (en) |
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2023
- 2023-06-01 CN CN202321379013.5U patent/CN220019922U/en active Active
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