A compressor/motor has fluid processing stages, each having ports through which a fluid is accepted in one volume and expelled in another volume. A system of valves selectively couples the ports to define, for a first process of a cycle, a unidirectional fluid path through the fluid processing stage
A compressor/motor has fluid processing stages, each having ports through which a fluid is accepted in one volume and expelled in another volume. A system of valves selectively couples the ports to define, for a first process of a cycle, a unidirectional fluid path through the fluid processing stages that expels the fluid from path-adjacent fluid processing stages in incrementally smaller volumes. In a second process of the cycle, a reverse unidirectional fluid path is defined by the valves where the fluid expelled from path-adjacent fluid processing stages is in incrementally larger volumes. A mechanical interface coupled to the fluid processing stages conveys a force to the fluid processing stages to compel the fluid through the fluid path in the first process or conveys the force from the fluid processing stages that is compelled by the fluid traversing the reverse fluid path.
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1. An apparatus comprising: a plurality of fluid processing stages, each having an internal chamber and one or more ports through which a fluid is accepted into the chamber and expelled from the chamber;a plurality of valves communicatively coupled to the ports of the fluid processing stages through
1. An apparatus comprising: a plurality of fluid processing stages, each having an internal chamber and one or more ports through which a fluid is accepted into the chamber and expelled from the chamber;a plurality of valves communicatively coupled to the ports of the fluid processing stages through which the fluid is accepted into each of the chambers as a volume and expelled from each of the chambers as another volume that is other than the volume in which the fluid is accepted;a plurality of conduit segments interconnecting the valves of the respective fluid processing stages to define, in one process of a cycle, a fluid path through the fluid processing stages and defining, in another process of the cycle, a reverse fluid path through the fluid processing stages;one or more heat exchangers in communication with a heat storage medium through which all of the conduit segments between the valves pass;a mechanical interface mechanically coupled to the fluid processing stages such that, during the one process, a force is conveyed to the fluid processing stages that compels the fluid through the fluid path and that, during the other process, the force is conveyed from the fluid processing stages that is compelled by the fluid traversing the reverse fluid path; anda timing drive mechanically coupled to the mechanical interface and to the valves to operate the valves in a sequence that, during the process, the fluid path is unidirectional such that the other volumes of the fluid expelled from respective path-adjacent fluid processing stages are made incrementally smaller over the fluid path and to operate the valves in another sequence that, during the other process, the reverse fluid path is unidirectional such that the other volumes of the fluid expelled from the respective path-adjacent fluid processing stages become incrementally larger over the reverse fluid path. 2. The apparatus of claim 1, wherein the timing drive synchronizes the valves so that the conduit segments are open between only those path-adjacent fluid processing stages that are in relative states by which only unidirectional flow of the fluid can occur while the fluid path segment is open. 3. The apparatus of claim 2, wherein the relative states are positions of actuators in the path-adjacent fluid processing stages that compel transport of the fluid over the conduit segments. 4. The apparatus of claim 1, wherein the valves comprise a set of compression path valves defining the fluid path such that the fluid is transported between the ports of the path-adjacent fluid processing stages independently of the timing drive. 5. The apparatus of claim 4, wherein the compression path valves are check valves. 6. The apparatus of claim 4, wherein all of the valves other than the compression path valves define the other fluid path and are synchronized by the timing drive. 7. The apparatus of claim 6, wherein the valves other than the compression path valves are poppet valves. 8. The apparatus of claim 6 further comprising a control circuit coupled to the valves and configured to: disengage the valves other than the compression path valves from the timing drive during the process of the cycle. 9. The apparatus of claim 1 further comprising an accumulator to accept the other volume from a terminal one of the fluid processing stages on the fluid path and to furnish the volume of the fluid to a terminal one of the fluid processing stages on the reverse fluid path. 10. The apparatus of claim 1, wherein each of the fluid processing stages has a single port to which a corresponding valve is communicatively coupled. 11. The apparatus of claim 10, wherein the valves that define the fluid path through the fluid processing stages are the same valves that define the reverse fluid path through the fluid processing stages. 12. The apparatus of claim 11, wherein the valves are rotary valves. 13. The apparatus of claim 1, wherein the one or more heat exchangers is a heat exchanger containing a heat storage medium through which all of the conduit segments between the valves commonly pass. 14. The apparatus of claim 13, wherein the heat exchanger absorbs heat from the fluid as the fluid traverses the fluid path and stores the heat absorbed from the fluid as thermal energy to increase the temperature of the fluid as the fluid traverses the reverse fluid path. 15. An apparatus comprising: a compressor/motor block;a plurality of fluid processing stages mechanically supported in the compressor/motor block, each of the fluid processor stages having an internal chamber and one or more ports through which a fluid is accepted into the chamber and expelled from the chamber;a plurality of valves communicatively coupled to the ports of the fluid processing stages through which the fluid is accepted into each of the chambers as a volume and expelled from each of the chambers as another volume that is other than the volume in which the fluid is accepted;a plurality of conduit segments interconnecting the valves of the respective fluid processing stages to define, in one process of an energy recovery cycle, a fluid path through the fluid processing stages and defining, in another process of the energy recovery cycle, a reverse fluid path through the fluid processing stages;one or more heat exchangers in communication with a heat storage medium through which all of the conduit segments between the valves pass;a crankshaft mechanically coupled to the fluid processing stages through the compressor/motor block that, during the one process, conveys a force to the fluid processing stages that compels the fluid through the fluid path and that, during the other process, conveys the force from the fluid processing stages that is compelled by the fluid traversing the reverse fluid path; anda timing drive mechanically coupled to the crankshaft and to the valves to operate the valves in a sequence that, during the process, the fluid path is unidirectional such that the other volumes of the fluid expelled from respective path-adjacent fluid processing stages are made incrementally smaller over the fluid path and to operate the valves in another sequence that, during the other process, the reverse fluid path is unidirectional such that the other volumes of the fluid expelled from the respective path-adjacent fluid processing stages become incrementally larger over the reverse fluid path. 16. The apparatus of claim 15, wherein each of the fluid processing stages includes: a cylinder bored into the compressor/motor block to define the chamber; anda piston positioned in the cylinder and displaceable therein, wherein the crankshaft is mechanically coupled to the piston in each of the fluid processing stages. 17. The apparatus of claim 16, wherein the timing drive synchronizes opening and closing the valves with rotation of the crankshaft so that the valves are open between only those path-adjacent fluid processing stages in which the piston is in a stroke position. 18. The apparatus of claim 15 further comprising an accumulator to accept the other volume from a terminal one of the fluid processing stages on the fluid path and to furnish the volume of the fluid to a terminal one of the fluid processing stages on the reverse fluid path. 19. The apparatus of claim 15, wherein the one or more heat exchangers is a heat exchanger containing a heat storage medium through which all of the conduit segments between the valves commonly pass.
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이 특허에 인용된 특허 (5)
Murphy John R. (Smithville MS), Compressed air-operated motor employing dual lobe cams.
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