| 摘要 |
The invention relates to a solar actuator designed on the principle of solar-thermal-mechanical conversion and carried out mainly by means of a bimetallic thermal convertor. According to the invention, the actuator comprises a thermal bimetallic strip (1) shaped according to a helical cylindrical path and placed inside a tube-shaped brass container (2) tightly closed by a cover (2'), associated with a sylphon (2''), employed to compensate the thermal dilation of a thermally conductive fluid (3) which fills the container (2) with a view to enhancing the heat transfer from the wall of the container (2) to the bimetallic thermal convertor proper, the said container (2) being placed within the focus point of a cylindrical-parabolic concentrator (4) making possible the exploitation of the reflected solar radiation, an initial part (1') of the thermal bimetallic strip (1) being anchored to a hub (5) while the other one, i.e. the final part (1'') is anchored to the wall of the container (2), the deformation of the strip (1) being converted into rotation motion and being transmitted to a rigid shaft (6) which is integral with the hub (5), the shaft (6) being mounted in a roller bearing comprising two radial ball bearings (7 and 8) and being sealed as against the tube-shaped container (2) by an oil sealing ring (10). |
