Power plants – Motor operated by expansion and/or contraction of a unit of... – Unit of mass is a gas which is heated or cooled in one of a...
Patent
1977-07-27
1980-04-29
Ostrager, Allen M.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Unit of mass is a gas which is heated or cooled in one of a...
60525, F02G 104
Patent
active
041999452
ABSTRACT:
A multi-cycle thermal reciprocating machine of the type commonly known as Stirling engine, which operates on a closed cycle with a compressible fluid as the operational medium. Double-acting pistons are combined into reciprocating members, each of which is in contact with the operational medium of at least four different Stirling cycles. These cycles occur simultaneously and are symmetrically phased, each performed in at least two different expansible chambers at two different temperatures, typically one hot expansion chamber connected to a cold compression chamber through a conduit containing two heat exchangers and one regenerator. The piston surfaces are arranged in opposed pairs, two pairs of surfaces being maintained at a constant distance apart and so located that the movement of each reciprocating member is caused by one co-acting pair of expansion chambers being part of one pair of thermodynamic cycles in phase opposition to each other, and a second co-acting pair of compression chambers being part of a second pair of cycles also in phase opposition to each other, and in a quadrature relationship with the first pair of cycles. Each cycle is effected by two reciprocating members in such a manner that the compression forces of one cycle are internally balanced by the expansion forces of another cycle, so that in consequence there is a smooth flow of power and the forces transmitted are reduced. The resulting Stirling engines are flexible in design and versatile in application.
REFERENCES:
patent: 2564363 (1951-08-01), Horowitz
patent: 2616245 (1952-11-01), Van Weenen
patent: 3157024 (1964-11-01), McCrory
patent: 3296808 (1967-01-01), Malik
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