Stoves and furnaces – Heaters – Surface
Patent
1975-06-23
1977-07-12
Sprague, Kenneth W.
Stoves and furnaces
Heaters
Surface
350299, I24J 302
Patent
active
040347370
ABSTRACT:
A solar heat boiler apparatus has a base frame, a turning body rotatably mounted on the base frame for turning movement about a horizontal axis, a reflector mounting frame rotatably mounted on the turning body for rotation around an axis perpendicular to the horizontal axis, and turning mechanisms coupled to the turning body and the reflector mounting frame for turning the turning body and the reflector mounting frame to direct the reflector mounting frame toward the sun. A plurality of curved mirrors are mounted side by side on the reflector frame in a concave spherical arrangement to form a reflector unit, each curved mirror having, in plan view, the shape of a sector of an annulus and in longitudinal section the shape of a part of a circle. The mirrors in the arrangement are positioned with the sector shapes on circular lines concentric with the optical axis of the concave spherical arrangement and to reflect rays incident on the reflector unit parallel to the optical axis of the concave spherical arrangement to a focal position on the optical axis. A boiler unit is positioned at the focal position to receive the reflected rays.
REFERENCES:
patent: 1806216 (1931-05-01), Plummer
patent: 2460482 (1949-02-01), Abbot
patent: 2760920 (1956-08-01), Olsen
patent: 2987961 (1961-06-01), Cotton et al.
Sprague Kenneth W.
Suehiro Seiki Company, Ltd.
Yeung James C.
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