The cooker is collapsed for transport.
The Robinson Cooker is a faceted parabolic cooker with a square shaped reflector, 86.5 cm X 86.5 cm. It has been designed by James Robinson. By carefully orienting each facet, places the focus about 2 cm below the corners so that the rotation point falls within the spreaders. The solar collection area is .75 square meter. The cooking vessel of this early version is a 15.75 cm dia, 15.5 cm tall coffee can with a 6.5 mm x 100 mm bolt, with sleeves that fit snuggly in the tube that supports the cooking vessel. This method of support eliminates the usual structure that intercepts some of the concentrated radiation blocking it from the target. The photo shows a glass cover for the cooking vessel, however the designer suggests a metal cover would work as well.
This cooker may represent a breakthrough in parabolic solar cooker design due to its portability and ease of construction. The reflector is made from a single 4ft x 3ft (122 cm x 92 cm) sheet of corrugated cardboard that will fold up accordion style for storage or transport. Like the CooKit, it is made from a single 4ft x 3ft (122 cm x 92 cm) sheet of corrugated cardboard. Also the support structure for the cookpot is simple and novel.
Contact
See James Robinson.