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1. (WO1983001292) APPAREIL COLLECTEUR D'ENERGIE SOLAIRE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

Patent Claims

1. Apparatus for collecting solar energy for providing thermic or electrical energy, comprising a frame (2, 3) having a reflector means mounted therein in the form of a concave part-cylindrical mirror screen (1) of axis-symmetric cross-sectional shape for concentrating incident solar rays towards a central focal line, a solar energy utilizing means (7) placed in the hot region of the extension of the focal line along the screen (1), a drive means (20? 22) for turning the screen (1) about at least one axis, and a control circuit having a solar sensor means for actuating the
drive means, for turning the screen (1) according to the movement of the sun, characterized in that the solar energy utilizing means is an elongated container (7) of transparent material which is arranged to receive a heating means (40; 43; 45) for direct utilization of the generated thermic energy for baking, roasting or cooking of food
products placed in the heating means, or to receive a
solar cell means (46) for producing electrical energy
under the influence of solar rays concentrated in the
container, and that the solar sensor means comprises at least one photosensitive element (33) located in the vicinity of the caustic surface created by reflection of the solar rays when incident on the screen (1) parallel to the axis of symmetry of the cross-section of the screen.
2. Apparatus according to claim 1, characterized in that the container (7) consists of a pair of coaxial tubes (27, 28) with an intermediate, insulating air layer (29), the inner.tube (27) consisting of glass and the outer tube (28) consisting of a transparent synthetic material, such as acrylic resin, and the container (7) being closed at one end and being provided with a removable lid (30) at its other end.
3. Apparatus according to claim 1 or 2, characterized in that the heating means consists of a longitudinally bipartite cylinder (40) of a good heat-conducting material.

4. Apparatus according to claim 1 or 2, characterized in that the heating means consists of a chute
shaped, part-cylindrical plate (43) of a good heat-conducti material which is provided with a collection container (44) at one end thereof.
5. Apparatus according to claim 1 or 2, characterized in that the solar cell means (46) comprises a pair of spaced, parallel plates (47, 48) on the opposite sides of which there is disposed a respective array of solar cells (49.resp. 50), the plates and solar cells being surrounded by a casing (53, 54) of an insulating, transparent material.
6. Apparatus according to claim 1, 2 or 5 , characte rized in that the container (7) at its ends is provided with an inlet (62) and an outlet (12), respectively, for connection to a system for supply and through-flow of a fluid.
7. Apparatus according to one of the preceding claims, characterized in that the photosensitive element is a solar cell (33) which is connected to an electronic switch .(Tl) in the control circuit for the drive means (20), to actuate the switch and therewith the drive means for the screen (1) when sensing a luminance difference when the cell (33) is passed by the existing caustic surface.
8. Apparatus according to claim 7, characterized in that the solar cell (33) is placed essentially on the caustic surface created by reflection of the light rays when incident on the screen (1) parallel to the axis of symmetry of the cross-section of the screen.
9. Apparatus according to one of the claims 1 - 6, characterized in that the solar sensor means comprises a first pair of solar cells (33, 34) connected to a first transistor (Tl) and arranged to cause start and stop, respectively, of a drive motor (20) for turning of the reflector screen (1) about a vertical axis, and two
additional pairs (34, 35) of solar cells placed at the lower and upper ends, respectively, of the screen (1), and of which cells (34a, 35a and 34h, 35b) belonging together from each of the additional pairs (34, 35) are connected to a respective one of two additional transistors (T2, T3) and are arranged to control the operation of a reversible
motor (22) for turning of the screen (1) about a horizontal axis, the cells belonging together counteracting each other and causing stop of the motor (22) when both of the additional solar cell pairs (34, 35) are illuminated.