Pumps – Motor driven – Fluid motor
Patent
1984-06-04
1987-05-19
Smith, Leonard E.
Pumps
Motor driven
Fluid motor
606418, 91346, 126419, 126422, F04B 1700
Patent
active
046663762
ABSTRACT:
An apparatus for converting low level thermal radiation into mechanical work. The apparatus incorporates a collector (11) to receive and concentrate low level thermal energy to generate a pressure by vaporizing a working fluid. An expansible chamber (70), having at least one movable wall, defined by a diaphragm (54), is selectively in fluid communication with the collector (11). A movable piston (61) is operatively associated with the movable wall of the expansible chamber (70). A connecting rod (71) is secured at one end to the movable piston (61); the other end of the connecting rod (71) is suitable for connecting to a mechanical load. A valve spool (73), slidably associated about the surface of the connecting rod (71) effects fluid communication of the expansible chamber (70) alternately with the collector (11) and an exhaust chamber (124), the latter having a pressure substantially less than the work pressure of the collector (11). A compressor (106) receives working fluid from the exhaust chamber (124) and supplies it to the collector (11).
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