Patent ID: 9746215
Date: 2017-08-29
CPC Classifications: F01K,F22B,F25B,Y02A

Claim:
1. A thermodynamic system for powering a reciprocating device, the thermodynamic system including a refrigerant passing in a closed loop between a refrigerant compressor, a condenser, an expansion valve, and an evaporator, the thermodynamic system further comprising: a heat source for heating the refrigerant; and an engine for receiving the heated refrigerant, the engine including a housing and an engine shifter assembly, wherein the engine shifter assembly comprises a ported engine shifter, and said engine shifter assembly is movable between a first position and a second position, the engine further comprises a shaft having a first end and an enlarged second end, the shaft axially movable through the housing between a third position and a fourth position, the ported engine shifter being located and movable within the housing between the first position and the second position, an engine piston attached to the shaft within the ported engine shifter and movable with the shaft between a fifth position and a sixth position, at least one first housing port in the housing alignable with at least one first engine shifter port in the engine shifter for passing the heated refrigerant into the housing and into the engine shifter to displace the engine piston in a first direction relative to the housing and at least one second housing port in the housing alignable with at least one second engine shifter port in the engine shifter for passing the heated refrigerant into the housing and into the engine shifter to displace the engine piston in a second direction relative to the housing; wherein the shifter assembly is connected to a slider valve that is slidably positionable by the enlarged portion of the shaft between a seventh position, to align the slider valve to direct a pressurized refrigerant flow of the heated refrigerant to the at least one first housing port to displace the engine piston in the first direction, and an eighth position to align the slider valve to direct a refrigerant flow of the heated refrigerant to the at least one second housing port to displace the engine piston in the second direction.