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Variable-focus Fresnel lens focuser

A technology of Fresnel lens and focuser, which is applied in the field of variable-focus Fresnel lens focuser, which can solve the problems of low solar energy utilization, difficulty in collecting sunlight, and non-variable focal length of the focuser.

Active Publication Date: 2013-09-18
毛建华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The non-variable focus of the focal length of the concentrator makes it relatively difficult to collect sunlight, and the utilization of solar energy is relatively low

Method used

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  • Variable-focus Fresnel lens focuser
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  • Variable-focus Fresnel lens focuser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as Image 6 with Figure 7 As shown, specifically, in a specific embodiment of the present invention, the stent system is defined: the stent system includes at least two, wherein the outer stent 1 is designed in an arc-shaped structure, and the inner stent 2 is designed in an arc-shaped structure. The inner bracket 2 is provided with a sliding groove along its length direction, and the sliding device 21 is slidably arranged in the sliding groove.

[0056] When there are two support systems, the two support systems are arranged symmetrically in the same plane, and the heat receiver is arranged at the symmetrical center of the support systems. The outer bracket 1 is designed in an arc shape, and the outer bracket 1 is designed in an arc shape toward its center, where the center of the circle refers to the opposite side of the center of the arc.

[0057] The inner bracket 2 also adopts an arc-shaped structure design, and the side of the inner bracket 2 facing the ce...

Embodiment 2

[0062] Please refer to Figure 8 , Figure 8 A schematic structural diagram of a variable-focus Fresnel lens focuser designed with an angled structure in the second embodiment of the present invention is shown.

[0063] Specifically, in another embodiment of the present invention, both the outer bracket 1 and the inner bracket 2 are designed with an angled structure, the inner bracket 2 is provided with a slide groove, and the sliding device 21 is slidably disposed in the slide groove.

[0064] In the above structural design, the inner support 2 and the outer support 1 are arranged symmetrically with the preset position of the heat receiver as the center of symmetry.

[0065] Seen from the midline section, the shape of the outer bracket 1 is similar to that of the door frame structure in the prior art.

[0066] Specifically, the present invention also includes a top bracket system 7, the top bracket system 7 includes a first top frame and a second top frame, the first top fr...

Embodiment 3

[0069] Please refer to Figure 9 , Figure 9 A schematic structural diagram of a variable-focus Fresnel lens focuser designed in a trapezoidal or pagoda-shaped structure is shown in the third embodiment of the present invention.

[0070] The outer bracket 1 is designed as a straight rod structure, and all the outer brackets 1 are arranged obliquely to form a bracket with a trapezoidal cross section; the inner bracket 2 is designed with a straight rod shape, and the inner bracket 2 is arranged obliquely to form a bracket with a trapezoidal cross section. Moreover, based on the above structural design, the inner support 2 and the outer support 1 are arranged in parallel.

[0071] In the third embodiment, the inner bracket 2 is provided with a sliding groove along its length direction, and the sliding device 21 is slidably arranged in the sliding groove. A chute is provided to enable the sliding device 21 to slide along a predetermined track.

[0072] In this embodiment, a top...

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Abstract

The invention relates to the technical field of solar application devices, in particular to a variable-focus Fresnel lens focuser. The variable-focus Fresnel lens focuser comprises a Fresnel lens, a support system, an installing assembly and an adjusting system. The support system comprises an outer support and an inner support. The inner support is arranged on the inside of the outer support and can move relative to the outer support, and a sliding device is arranged on the inner support in a sliding mode. The installing assembly comprises a lens frame and an installing frame, the Fresnel lens is fixedly arranged on the lens frame, the lens frame can be arranged on the installing frame in a rotatable mode, the installing frame is arranged on the sliding device in a rotatable mode, and the rotating direction of the installing support is perpendicular to the rotating direction of the lens frame. The adjusting system comprises a rotating adjusting assembly and a displacement adjusting assembly. The lens is arranged on the support system through the installing assembly, and the adjusting system can conduct angle rotation on the lens and the installing assembly and can adjust the lens and the installing assembly vertically and horizontally. The variable-focus Fresnel lens focuser has a variable-focus function.

Description

technical field [0001] The invention relates to the technical field of solar energy application equipment, and more specifically relates to a variable-focus Fresnel lens concentrator. Background technique [0002] At present, there are two main types of solar energy utilization at home and abroad: photoelectric and photothermal systems. Whether it is a photoelectric system or a photothermal system, in addition to adjusting the tracking angle of sunlight, the focal length of the focuser is generally relatively fixed. The non-variable focal length of the concentrator makes it relatively difficult to collect sunlight, and the utilization of solar energy is relatively low. Contents of the invention [0003] The object of the present invention is to provide a variable focal length Fresnel lens focuser to solve the above technical problems. [0004] In an embodiment of the present invention, a variable focus Fresnel lens focuser is provided, which includes a Fresnel lens, and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/16G02B19/00G02B7/04
Inventor 毛建华
Owner 毛建华
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