초록 ▼

A solar heat collector for use at a predetermined latitude includes a surface of revolution comprising an inner, upwardly convex right conical frustum and an outer, upwardly concave right conical frustum, the walls of which each have a rise angle equal to the latitude plus from zero to about fifteen

A solar heat collector for use at a predetermined latitude includes a surface of revolution comprising an inner, upwardly convex right conical frustum and an outer, upwardly concave right conical frustum, the walls of which each have a rise angle equal to the latitude plus from zero to about fifteen degrees, fluid conduit means defining a spiral path along the surfaces of the frustums, and means for circulating fluid through the conduit means. In preferred embodiments, the collector includes a translucent, circular, upwardly convex dome-shaped cover.

대표청구항 ▼

A solar collector comprising: a frame defining an opening having a first diameter; a downwardly converging frusto-conical wall portion of smaller diameter than said first diameter positioned within said frame and attached thereto; an upwardly converging frusto-conical wall portion of smaller diamete

A solar collector comprising: a frame defining an opening having a first diameter; a downwardly converging frusto-conical wall portion of smaller diameter than said first diameter positioned within said frame and attached thereto; an upwardly converging frusto-conical wall portion of smaller diameter than the minimum diameter of the downwardly converging frusto-conical wall portion positioned within said frame and within the downwardly converging frusto-conical wall portion and attached thereto; fluid conduit means lying in parallel displacement on the downwardly and upwardly converging wall portions, said fluid conduit means being provided with inlet and outlet means to permit the flow of fluid into and out of said fluid conduit means, said fluid conduit means circulating fluid along a first spiral path disposed on said downwardly converging wall portion and a second spiral path disposed on said upwardly converging wall portion, said fluid conduit means being provided with a light absorbing surface to permit fluid to be heated by sunlight striking said fluid conduit means, said first and second spiral paths being interconnected; circulating means for circulating fluid along a circulation path through said fluid conduit means, said circulation path including both said first and second spiral paths; and cover means fixed to said frame for covering said fluid conduit means yet permitting the passage of sunlight thereto.