Hollow arc-shaped longitudinal and transverse linear condensation Fresnel lens

Abstract

The utility model discloses a hollow arc-shaped longitudinal and transverse linear condensation Fresnel lens, which comprises a transparent substrate used as a support, a convex transparent Fresnel zone arranged on one surface of the transparent substrate, and a convex transparent Fresnel zone arranged on the other surface of the transparent substrate, the transparent substrate and the transparent Fresnel belt are bent by a specified angle to form an arc-shaped cross section and a focus; the arc-shaped cross section formed by the transparent substrate and the transparent Fresnel zone extends longitudinally to form the arc-shaped longitudinal linear condensation Fresnel lens and the focal line, the tubular container and the arc-shaped longitudinal linear condensation Fresnel lens are located at the concentric circle position, and the focal line is accurately or inaccurately focused on the surface of the tubular container. According to the utility model, the traditional two-dimensional condensation is changed into three-dimensional condensation, so that the photo-thermal and photoelectric utilization efficiency after condensation is improved, more importantly, the traditional plane condensation area is replaced by the space expansion area, and a large amount of ineffective area can be effectively utilized.

Description

Technical Field

[0001] The invention relates to a hollow arc Fresnel mirror, in particular to a hollow arc Fresnel mirror capable of longitudinal and transverse linear focusing. Background Art

[0002] Concentration is an effective means to improve the efficiency of photothermal and photoelectric. Ordinary solar energy and photovoltaic panels use natural sunlight irradiation, and the efficiency of photothermal and photoelectric conversion is low. The focus of an ordinary concentrator is to intersect on the axial projection surface of the lens, so that the concentrator and the solar energy and photovoltaic panel are in a parallel plane relationship, that is, only one side of the solar energy and photovoltaic panel can face the concentrator, which limits the structural relationship between the solar energy or photovoltaic panel and the concentrator, which also makes the structure single and the concentration efficiency low. The benefit of the present invention is that a tubular heat collection device or a tubular photoelectric conversion device can be inserted into the axial position of the arc concentrator, so that the two-dimensional concentration is changed into three-dimensional concentration, which not only improves the utilization efficiency of photothermal and photoelectric after concentration, but more importantly, changes the structural mode of concentration, so that it changes from plane concentration to space concentration, and the projection area on the ground is reduced, and the original plane concentration area is replaced by the space expansion area, thereby improving the efficiency of land use and making a large amount of invalid area effectively utilized. Summary of the invention

[0003] The present invention is a hollow arc-shaped longitudinal linear focusing Fresnel mirror, characterized in that there is a transparent substrate 2 as a support, a convex transparent Fresnel strip 4 is provided on one side of the transparent substrate 2, the transparent substrate 2 and the transparent Fresnel strip 4 are bent at a specified angle to form an arc-shaped section 6 and a focus 8; the arc-shaped section 6 formed by the transparent substrate 2 and the transparent Fresnel strip 4 is longitudinally extended to form an arc-shaped longitudinal linear focusing Fresnel mirror 10 and a focal line 12, a tubular container 30 is located in a concentric circle with the arc-shaped longitudinal linear focusing Fresnel mirror 10, and the focal line 12 is accurately or inaccurately focused on the surface of the tubular container 30. The tubular container 30 is a tubular heat collecting device or a tubular photoelectric conversion device as described in the background of the present invention.

[0004] The present invention is a hollow arc-shaped transverse linear focusing Fresnel mirror, characterized in that there is a transparent substrate 2 as a support, a convex transparent Fresnel strip 4 is provided on one side of the transparent substrate 2, a cross section formed by the transparent substrate 2 and the transparent Fresnel strip 4 is longitudinally extended to form a plane longitudinal Fresnel mirror 20 and a focal line 22, the plane longitudinal Fresnel mirror 20 is bent at a specified angle in a direction parallel to the transparent Fresnel strip 4 to form an arc-shaped transverse linear focusing Fresnel mirror 24, and a focal arc line 26 is formed, a tubular container 30 is in a concentric circle position with the arc-shaped transverse linear focusing Fresnel mirror 24, and the focal arc line 26 is accurately or inaccurately focused on the surface of the tubular container 30. The tubular container 30 is a tubular heat collecting device or a tubular photoelectric conversion device as described in the background technology of the present invention.

[0005] Furthermore, the tubular container 30 is replaced by an arc-shaped material 32 . BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 is a schematic cross-sectional view of the substrate 2 and the Fresnel strip 4 before bending;

[0007] Figure 2 is a schematic diagram of a curved cross section 6 formed by a substrate 2 and a Fresnel zone 4 after bending;

[0008] Figure 3 is a schematic diagram of a curved longitudinal Fresnel mirror 10 formed by longitudinally extending the curved cross section 6;

[0009] Figure 4 is a schematic diagram showing that the focal line 12 of the arc-shaped longitudinal Fresnel mirror 10 is focused on the surface of the tubular container 30;

[0010] Figure 5 is a schematic diagram of a flat Fresnel mirror formed by the substrate 2 and the Fresnel strip 4 being longitudinally extended but not bent;

[0011] Figure 6 It is a schematic diagram of a curved transverse Fresnel mirror 24 formed by bending at a specified angle and focusing on the surface of a tubular container 30;

[0012] Figure 7 It is a schematic diagram showing that the tubular container 30 is replaced by the arc-shaped material 32 . DETAILED DESCRIPTION Specific implementation method one:

[0014] The present invention is a hollow arc-shaped longitudinal linear focusing Fresnel mirror, which is characterized in that a transparent substrate 2 is provided as a support, a convex transparent Fresnel strip 4 is provided on one side of the transparent substrate 2, and the transparent substrate 2 and the transparent Fresnel strip 4 are bent at a specified angle to form an arc-shaped section 6 and a focus 8; the arc-shaped section 6 formed by the transparent substrate 2 and the transparent Fresnel strip 4 is longitudinally extended to form an arc-shaped longitudinal linear focusing Fresnel mirror 10 and a focal line 12, a tubular container 30 is located in a concentric circle position with the arc-shaped longitudinal linear focusing Fresnel mirror 10, and the focal line 12 is accurately or inaccurately focused on the surface of the tubular container 30. Specific implementation method 2:

[0016] The present invention is a hollow arc-shaped transverse linear focusing Fresnel mirror, which is characterized in that a transparent substrate 2 is provided as a support, a convex transparent Fresnel strip 4 is provided on one side of the transparent substrate 2, a cross section formed by the transparent substrate 2 and the transparent Fresnel strip 4 is longitudinally extended to form a plane longitudinal Fresnel mirror 20 and a focal line 22, the plane longitudinal Fresnel mirror 20 is bent at a specified angle in a direction parallel to the transparent Fresnel strip 4 to form an arc-shaped transverse linear focusing Fresnel mirror 24, and a focal arc line 26 is formed, a tubular container 30 is in a concentric circle position with the arc-shaped transverse linear focusing Fresnel mirror 24, and the focal arc line 26 is accurately or inaccurately focused on the surface of the tubular container 30.

[0017] Specific implementation method three: the tubular container 30 is replaced by the arc-shaped material 32, and the remaining technical features are the same as those of implementation method one or implementation method two.

[0018] The above are preferred implementations, but are not limited thereto. Therefore, those skilled in the art should understand that various modifications may be made to the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and still within the scope of protection of this patent.

Claims

1. A hollow arc-shaped longitudinal linear focusing Fresnel mirror, characterized in that: A transparent substrate (2) is provided as a support, one side of the transparent substrate (2) has a raised transparent Fresnel strip (4), the transparent substrate (2) and the transparent Fresnel strip (4) are bent at a specified angle to form an arcuate section (6) and a focus (8); the arcuate section (6) formed by the transparent substrate (2) and the transparent Fresnel strip (4) is longitudinally extended to form an arcuate longitudinal linear focusing Fresnel mirror (10) and a focal line (12), a tubular container (30) and the arcuate longitudinal linear focusing Fresnel mirror (10) are in a concentric circle position, and the focal line (12) is accurately or inaccurately focused on the surface of the tubular container (30).

2. The hollow arc-shaped longitudinal linear focusing Fresnel mirror according to claim 1, characterized in that The tubular container (30) is replaced by an arc-shaped material (32).

3. A hollow arc-shaped transverse linear focusing Fresnel mirror, characterized in that: A transparent substrate (2) is provided as a support, one side of the transparent substrate (2) has a raised transparent Fresnel strip (4), a cross section formed by the transparent substrate (2) and the transparent Fresnel strip (4) is longitudinally extended to form a plane longitudinal Fresnel mirror (20) and a focal line (22), the plane longitudinal Fresnel mirror (20) is bent at a specified angle in a direction parallel to the Fresnel strip (4) to form an arc-shaped transverse linear focusing Fresnel mirror (24) having a focal arc line (26), a tubular container (30) and the arc-shaped transverse linear focusing Fresnel mirror (24) are in a concentric circle position, and the focal arc line (26) is accurately or inaccurately focused on the surface of the tubular container (30).

4. The hollow arc-shaped transverse linear focusing Fresnel mirror according to claim 3, characterized in that The tubular container (30) is replaced by an arc-shaped material (32).

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