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Box-type solar device with Fresnel lens

A Fresnel lens and solar device technology, applied in the field of box-type solar devices, can solve the problem of high cost of parabolic mirrors that reduce efficiency and automatically track sunlight

Inactive Publication Date: 2013-04-17
刘君才
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent 91203175 line-focused black box solar heat exchanger allows linear focused sunlight to enter the black box through slits, but the slits cause solar heat to escape and reduce efficiency, and its parabolic mirrors that automatically track sunlight are expensive

Method used

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Examples

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Embodiment Construction

[0006] When the present invention is made into a box-type solar water heater, a Dewar-type vacuum incubator is made of mirror stainless steel, and the inner tank is coated with a black chrome coating for light-heat conversion. There is a water outlet, and 1-2 pieces of rectangular heat-resistant glass windows made of quartz glass and transparent glass-ceramic are glued on the top of the vacuum incubator. The size is 100×300mm. An inherent area of ​​1m 2 Left and right short focal length Fresnel lenses.

[0007] When the present invention is made into a box-type solar cooker, an incubator filled with rigid polyurethane foam is used, the inner tank is coated with a light-to-heat conversion coating composed of epoxy resin and carbon black or carbon nanotubes, and the incubator can be opened. A heat-resistant glass window is also glued in the cover, and a short focal length Fresnel lens is also glued on the top of the incubator cover.

[0008] Of course, the above two box-type s...

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Abstract

The invention relates to a box-type solar device with a Fresnel lens. The box-type solar device is characterized in that the large-size tabulate Fresnel lens is adopted to replace two large-size glass plates of the normal box-type solar device. The box-type solar device with the Fresnel lens is simple in structure and high in thermal efficiency and can be made into a box-type solar water heater or a box-type solar cooker and the like.

Description

[0001] Technical solutions [0002] The invention relates to a box-type solar device, in particular to a box-type solar device using a Fresnel lens. Background technique [0003] Chinese patent 91203175 line-focusing black-box solar heat exchanger allows linear focused sunlight to enter the black box through slits, but the slits cause solar heat to escape and reduce efficiency, and the cost of its parabolic mirrors that automatically track sunlight is high. Contents of the invention [0004] The invention is a box-type solar device using a Fresnel lens. [0005] The technical solution is: the Fresnel lens is fixed above the fully sealed incubator, and the point-shaped sunlight focused by the Fresnel lens enters the incubator from the rectangular heat-resistant glass window. The sunlight is several times larger, so the servomechanism for automatically tracking the sun can be unnecessary. Its advantages are simple structure, low cost and many uses. detailed description [...

Claims

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Application Information

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IPC IPC(8): F24J2/08F24S23/30
CPCY02E10/40
Inventor 刘君才
Owner 刘君才