This technology is a flat-panel concentrator that focuses sunlight onto a single point above the center without the need for a parabolic dish. It features circular reflective strips arranged on a flat, disc-shaped base, with their size and installation tilt angle increasing from the center outward. The inclined protrusions supporting these strips are injection-molded as a single unit with the base for modularity.
Parabolic dish reflectors used in systems like Dish-Stirling engines have been difficult to commercialize due to the high time and cost required for precision design and manufacturing. Large, integrated reflectors are vulnerable to wind loads and easily damaged by strong winds or typhoons, while ground-fixed Fresnel reflectors suffer from low concentration efficiency as they cannot adapt to changes in solar altitude.
This technology reduces wind resistance by incorporating ventilation holes that grow larger toward the outer edge between four adjacent inclined protrusions. The device is assembled from 4 to 6 fan-shaped segments using interlocking tabs and grooves, and can be mounted on a solar tracker via a rotating shaft and support frame. Suitable for small-scale solar power, Stirling engine heat sources, and distributed solar energy systems, it allows for low-cost mass production via injection molding while ensuring stable operation in high-wind environments.
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