Solar energy collection device

Technical Field

The invention relates to a solar energy collecting device.

Background Art

The attenuation of the conventional energy storage, use of solar energy has become a research and development of science and technology of topical issues in the field, the existing solar energy device extensive use of Fresnel lens to converge the light so that the dispersed solar focusing the light energy on the cell to generate electric energy. However, because the Fresnel lens in the sunlight for a long time under the irradiation of the temperature will rise, temperature rise will make the Fresnel lens shape of expansion while changing its surface, resulting in reduced convergence effect of the Fresnel lens, so as to enable the solar energy device the solar energy conversion efficiency is reduced. Furthermore, at the same time changes in temperature will lead to reduced service life of the Fresnel lens, thereby increasing the maintenance cost of the solar energy device.

Content of the invention

In view of this, it is necessary to provide a constant temperature, efficient solar energy collection device.

A solar energy collecting device, which comprises a supporting frame, a supporting plate, a plurality of reflection type Fresnel lens and temperature control system. The supporting plate is arranged on the support bracket. The temperature control system is set in the on the surface of the support plate. The plurality of reflective Fresnel lens is arranged in the temperature control system of the in-line row of cloth and stick. The temperature control system and the plurality of reflective Fresnel lens stated Fresnel's life in order to control the temperature of the lens.

Compared with the prior art, the solar collecting device of this invention through the use of reflective Fresnel lens with the temperature control system and make the reflective Fresnel lens within a certain range of temperature control, avoiding reflection type Fresnel lens due to temperature changes to the drawback of solar energy use efficiency is reduced, thereby prolonging the service life of the solar collecting device, improve the use efficiency of the solar energy.

Description of drawings

Figure 1 is shaft-side Figure of the invention solar energy collecting device;

Figure 2 is a cross-sectional view of the Figure 1 II-II in the direction of the solar collecting device.

Mode of execution

Please refer to Figure 1 and Figure 2, the embodiment of the invention provides a solar energy collecting device 100, which comprises a supporting frame 110, a support plate 120, a plurality of reflection type Fresnel lens 130 and temperature control system 140. The support plate 120 is arranged at the bracket 110 on. The temperature control system 140 is arranged in the supporting plate 120 on. The plurality of reflective Fresnel lens 130 is arranged in the temperature control system 140 in-line row of cloth and stick on a multi-piece reflective single-focus solar collection system. The temperature control system 140 a in the plurality of reflective Fresnel lens 130 is used to control the bottom side of the stated Fresnel's lens 130 temperature.

The bracket 110 is used for supporting the support plate 120. In this embodiment, the bracket 110 includes a base 112, a is arranged on the base 112 of the steering device 114 according to the different positions of the sun in order to adjust the supporting plate 120 toward the and angle. Understandable said steering device 114 can be realized in three-dimensional direction of the rotation of the driving device and the switching structure (Figure not shown).

The support plate 120 is rotatably arranged in the bracket 110 on, and can be used in the steering apparatus 114 to change their under the driving of the orientation of the and angle. The support plate 120 supports the states the reflection type Fresnel lens 130 and the temperature control system 140.

The plurality of reflective Fresnel lens 130 stick type the distribution in states temperature control system 140 is, in order to collect sunlight. Each reflective Fresnel lens 130 includes an upper surface 132 and a and the upper surface of the lower surface 134. On the upper surface 132 is provided with a plurality of V-shaped groove (V-Groove)136, each of said V-shaped groove 136 has a certain angle and a radian. (V-Groove)136 in the V-shaped groove on the surface 136a is coated on a layer of anti-reflection film 137. In the reflection type Fresnel lens 130 of the lower surface 134 is coated with a layer of reflecting film 138. The plurality of reflective Fresnel lens 130 together form a multi-piece reflective single-focus solar collection system, is arranged at the focus position of the light energy to the battery or heat exchange device will be able to convert the solar energy into the required electric energy, or heat energy. The multi-piece reflective single-focus solar collection system using parabolic way to the each piece of reflective Fresnel lens 130 of the shape and the reflection pattern (or with the angle V-Groove) to calculate and design, so that a plurality of reflection type Fresnel lens 130 of the array by the arrangement in accordance with a complete parabolic to assemble the system. Because of the more concentrated solar energy reflective of the large-area, the convergence of the more solar energy and, therefore, the plurality of reflective single-focus solar collection system can be designed into the 2x2, 3 x3, 3x2 or 4x4 array of similar such as monolithic reflective Fresnel lens 130. When manufacturing, the above-mentioned reflective single-focus solar collection system of a plurality of single reflection type Fresnel lens 130 of the optical the paraboloid is calculated one by one, each can be obtained by a reflection type Fresnel lens 130 of the V-shaped groove 136 and the radian of inclination angle. When the get every reflection type Fresnel lens 130 of the V-shaped groove 136 and the radian of the angle parameter is manufactured through injection molding with a plurality of the above-mentioned V-shaped groove 136 of the plastic structure, and then the thin metal vapor deposition or sputtering method, in the plastic structure is coated on the surface of a layer of anti-reflection film 137 and a reflection film 138 so as to form the reflective Fresnel lens 130. The reflection film 138 can adopt Al, Au, Ag, and the like materials or the above-mentioned arbitrary two kinds of material or three materials of mixed material. The states the reflection type Fresnel lens 130 array the distribution in states cooling system 140 so as to having a single focus of a reflective single-focus solar collection system. Plating is disposed on the reflection type Fresnel lens 130 of the V-shaped groove 136 an anti-reflection film on the surface 137 for the broadband anti-reflection film, the anti-reflection film can make the solar ultraviolet light, visible light, infrared light can be band light to far through the V-shaped groove 136 and the surface of the by the reflection film 138 intersect at one point after being reflected, so that the sunlight can be utilized in the wavelength of the frequency is increased by the ultraviolet light, visible light has been to the far-infrared range, further improving the utilization efficiency of the solar energy. Understandable, can also be directly in the V-shaped groove states in states (V-Groove) 136 on the surface 136a is coated on a layer of reflecting film is used to direct reflected light rays.

The temperature control system 140 is arranged in the support plate 120 and fittingly in the reflective Fresnel lens 130 of the lower surface 134 a side, and with the reflective Fresnel lens 130 contact. The temperature control system 140 includes a conduit 142, a temperature sensor 144, and a controller 146. The conduit 142 are arranged on the support plate 120 and fittingly in the reflective Fresnel lens 130 of the lower surface 134 is, and is in a serpentine arrangement. The conduit 142 with a coolant (Figure not shown). The temperature sensor 144 is arranged in the conduit 142 is, to sense the conduit 142 the temperature of the coolant, and the its sensing signal to the controller 146. The controller 146 is used to in accordance with the temperature sensor 144 detects the signal controlling the conduit 142, the circulation flow of the cooling liquid in the. When the conduit 142 the temperature of the coolant is higher than the preset temperature, the controller 146 controls the coolant circulation, make the high-temperature cooling liquid flows into the low-temperature coolant mission. Can be understood, the temperature control system 140 can also be others such as heat-dissipating fins or a heat tube fit with a fan a temperature control system, the heat dissipating fins or a heat tube is arranged in the support plate 120 and the reflective Fresnel lens 130 on the lower surface of, the fan is arranged in the support plate 120 and is on the heat dissipating fins or a heat tube is provided, in order to accelerate the heat radiating fins or heat radiation.

When in use, when the plurality of reflective Fresnel lens 130 when the temperature rises, and contact the conduit 142 through the heat conduction to the reflective Fresnel lens 130 to transfer the heat of the coolant, the temperature sensor 144 constantly monitoring the temperature of the cooling liquid, when the coolant temperature is higher than the pre-set temperature, the controller 146 controls the coolant circulation, the temperature will be higher than the pre-set temperature is derived of the coolant, the temperature will be lower than a predetermined temperature at the same time the coolant introduced into the conduit 142 states the reflection type so as to control in the Fresnel lens 130 temperature.

The invention solar energy collecting device 100 through the use of reflective Fresnel lens 130 matches the temperature control system 140 the reflective Fresnel lens 130 in a certain range of the temperature control, avoiding reflection type Fresnel lens 130 deformation caused by temperature changes of the solar collecting device 100 of the drawback of solar energy use efficiency is reduced, thereby prolonging the solar energy collecting device 100 service life, improve the use efficiency of the solar energy.

It should be noted that, the above-mentioned embodiment is only the invention's preferred embodiment, the technicians of this field can also be made in the spirit of the present invention other changes. These according to the present invention changes the spirit of the, should be included in this invention within the scope of protection requested.