阅读说明：本技术 菲涅尔聚光装置和聚光式太阳能系统 (Fresnel condensing device and condensing solar system ) 是由 胡笑平 于 2017-07-03 设计创作，主要内容包括：一种菲涅尔聚光装置和聚光式太阳能系统,其中聚光装置包括第一和第二菲涅尔透镜层(110,130),每个透镜层包括至少一个聚光型菲涅尔透镜(111,131)；以及一直筒形导光层(120),第一和第二菲涅尔透镜层(110,130)分别设置于其两端,直筒形导光层(120)用于将来自第一菲涅尔透镜层(110)的光线(LL)向下引导至第二菲涅尔透镜层(130)。通过采用两个菲涅尔透镜层(110,130)分别进行光线的汇聚,中间使用直筒形导光层(120)协助将光线从上层向下层引导,使得聚光装置不仅能够具有宽广的入射角度适应范围,还能够在较低的高度下获得较大的聚光比,避免了对跟日系统的依赖。(Fresnel light-gathering device and light-gathering solar system, wherein the light-gathering device comprises a th Fresnel lens layer and a second Fresnel lens layer (110,130), each lens layer comprises at least light-gathering Fresnel lenses (111,131), and a straight cylindrical light-guiding layer (120), the th Fresnel lens layer and the second Fresnel lens layer (110,130) are respectively arranged at two ends of the light-gathering layer, the straight cylindrical light-guiding layer (120) is used for guiding light (LL) from the Fresnel lens layer (110) downwards to the second Fresnel lens layer (130), the light gathering is respectively carried out by adopting the two Fresnel lens layers (110,130), the straight cylindrical light-guiding layer (120) is used in the middle to assist in guiding the light from the upper layer to the lower layer, so that the light-gathering device not only has a wide incident angle adaptation range, but also can obtain a larger light-gathering ratio at a lower height, and the dependence on a solar system is avoided.)

Claims

Fresnel light-concentrating device according to claim 1, comprising

A th Fresnel lens layer,

a second Fresnel lens layer is formed on the first Fresnel lens layer,

each lens layer comprises at least condensing Fresnel lenses, and a straight cylindrical light guide layer, the shape of which is straight cylindrical, the th Fresnel lens layer and the second Fresnel lens layer are respectively arranged at two ends of the straight cylindrical shape, and the straight cylindrical light guide layer is used for guiding the light from the Fresnel lens layer downwards to the second Fresnel lens layer.

[ claim 2] the device according to claim 1,

the inner wall of the straight cylindrical light guide layer is a reflecting mirror surface; alternatively, the first and second electrodes may be,

the cylindrical wall of the straight cylindrical light guide layer, the th Fresnel lens layer form a sealed th space, high-pressure gas or optical gas is filled in the th space, or the straight cylindrical light guide layer further comprises a light scattering cylinder, the cylindrical wall of the light scattering cylinder is formed by linear light scattering Fresnel lenses, the length extending direction of the light scattering cylinder is equal to that of the straight cylindrical light guide layer and is arranged in the inner space of the straight cylindrical light guide layer, and the focusing center line of the linear light scattering Fresnel lenses is perpendicular to the length extending direction.

[ claim 3] the device according to claim 1 or 2, wherein at least concentrating Fresnel lenses of the th or second Fresnel lens layer are multi-focal Fresnel lenses, or double-sided Fresnel lenses, or compound Fresnel lenses,

the multi-focal-length Fresnel lens is divided into different regions according to the distance from the central optical axis of the multi-focal-length Fresnel lens, wherein the region farther away from the central optical axis has a shorter focal length, and the region closer to the central optical axis has a longer focal length, and the longer focal length comprises the condition that the focal length is infinite.

[ claim 4] the device according to any of claims 1 to 3, wherein at least of the or second Fresnel lens layers are linear condensing Fresnel lenses, and the focusing center lines of the linear condensing Fresnel lenses of different layers are perpendicular to each other.

[ claim 5] the device according to any one of of claims 1 to 4, wherein at least of the th Fresnel lens layer comprises a plurality of concentrating Fresnel lenses arranged in an array, the second Fresnel lens layer comprises a plurality of concentrating Fresnel lenses arranged in an array, and the straight cylindrical light guide layer comprises a plurality of straight cylindrical light guide cylinders arranged in an array, and the cross-sectional shape of the straight cylindrical light guide cylinders is selected from the group consisting of a quadrangle, a hexagon and a circle.

The device of any of claims 1 to 5, , further comprising

toper leaded light layer sets up in second fresnel lens layer below, toper leaded light layer includes the toper leaded light section of thick bamboo of reflective at least, and its inner wall is at least partially for the reflecting mirror face, and the great and bottom mouth of buying of top is less, and the light that assembles via second fresnel lens layer is followed toper leaded light section of thick bamboo's top is jeted into.

The apparatus of claim 6, wherein the bottom of the tapered light pipe is closed

And the wall of the second Fresnel lens layer and the wall of the second Fresnel lens layer form a closed second space.

The device of any of claims 1 to 7, , further comprising

piezoelectric vibrator comprises piezoelectric vibration piece and its drive circuit, wherein the piezoelectric vibration piece is mechanically connected with Fresnel lens layer to drive it to vibrate.

concentrated solar energy system, comprising

The Fresnel light concentrating device of any of claims 1 to 8, and

and at least light energy utilization devices, wherein the light receiving surface is arranged on the light path behind the Fresnel light condensing device.

The system of claim 9,

comprising the fresnel concentrating device of any of claims 6 to 8,

the light energy utilization device is arranged at the bottom of the tapered light guide cylinder or in the tapered light guide cylinder, and comprises photoelectric conversion devices.

The system of claim 10,

the photoelectric conversion device is a photovoltaic plate with a single light receiving surface, and is arranged at the bottom of the tapered light guide cylinder, and the light receiving surface faces the top of the tapered light guide cylinder, or,

the photoelectric conversion device is a photovoltaic panel with two light receiving surfaces, is arranged in the conical light guide cylinder, is fixed on the conical light guide cylinder through a heat-conducting support piece, and the bottom of the conical light guide cylinder is sealed by a reflecting mirror surface. [ claim 12] the system according to claim 10 or 11, further comprising

bottom basin, set up in the toper leaded light layer below, with toper leaded light layer encloses into the third space of enclosed, hold working medium in the third space, working medium and photoelectric conversion spare heat conduction connection, the working medium is selected from water, oil, refrigerant, compressed gas.

The system of any of claims 10-12, wherein the light energy utilization device further comprises a thermoelectric conversion device disposed on a thermal conduction path for heat dissipation by the photoelectric conversion device.

Background

[0002] With increasing importance on environmental protection, solar energy systems are increasingly used in , and concentrated solar energy systems are increasingly gaining importance because they can improve the utilization efficiency of solar energy.

[0003] The conventional concentrating solar system usually adopts a Fresnel lens as a concentrating optical element, but the optical design of directly focusing the Fresnel lens on a light energy utilization device enables the concentrating device to have a small application range to the incident angle of sunlight, so that the conventional concentrating device of the solar system is limited in two aspects, namely aspect, which needs to be used together with a sun-tracking system to achieve the required effect, and aspect, which limits the concentrating ratio.

[0004] The concentration devices of the known solar systems also have problems with their height, since the height of the concentration devices generally increases with increasing concentration ratio.

[0005] Therefore, it is necessary to develop a fresnel condensing device having a better incident angle adaptability and capable of increasing a condensing ratio or reducing a system height.

Technical problem

Solution to the problem

Technical solution

[0006] According to aspects of the invention, Fresnel light condensing devices are provided, which comprise th Fresnel lens layers and second Fresnel lens layers, wherein each lens layer comprises at least condensing Fresnel lenses, and straight cylindrical light guide layers, the shapes of which are straight cylindrical, the th Fresnel lens layers and the second Fresnel lens layers are respectively arranged at two ends of the straight cylindrical light guide layers, and the straight cylindrical light guide layers are used for guiding the light rays from the Fresnel lens layers downwards to the second Fresnel lens layers.

[0007] According to another aspect of the invention, concentrating solar energy systems are provided, comprising a Fresnel concentrating device according to the invention and at least light energy utilizing devices having a light receiving surface disposed in the light path behind the Fresnel concentrating device

Advantageous effects

[0008] According to the Fresnel light condensing device, the two Fresnel lens layers are adopted to respectively condense light, the straight cylindrical light guide layer is used in the middle to guide the light from the upper layer to the lower layer, so that the light condensing device not only has an incident angle adaptive range with the width of , but also can obtain a larger light condensing ratio at a lower height, and the dependence on a sun tracking system is avoided.

[0009] As used herein, positional terms, such as "upper," "lower," "top," "bottom," and the like, merely indicate relative positional relationships and do not have absolute meanings, and numbers or serial numbers, such as "," "second," and the like, as used herein, are used by way of identification only and are not intended to have any limiting meaning.

Brief description of the drawings