Abstract:
An improved Stirling engine of the multiple cylinder double acting type. The engine in accordance with this invention includes numerous improved features, including but not limited to: piston design, piston rod seal design, components and methods for providing pressure balancing among the discrete cycle volumes of the engine, and a control valve configuration for reducing starting torque and unloading the engine if desired.
Abstract:
A device and method for treating a wound of a patient with negative pressure is provided. The device comprises a heat-assisted pump system. The pump system can be powered in part by heat derived from the patient. The pump system may be configured to be highly planar, light weight, and portable. The pump system may comprise a Stirling engine or a thermal acoustic engine.
Abstract:
A Stirling engine power generation system comprises a first gas fired Stirling engine driving a scroll compressor to provide heat to a second Stirling engine powered generator. The second Stirling engine is partially submersed in a heat transfer medium that is heated by heat transfer fluid compressed by the Stirling scroll compressor and excess heat from gas firing. The invention further comprises a cam drive system with spherical cam followers, and multiple electrical generators.
Abstract:
An improved Stirling engine of the multiple cylinder double acting type. The engine in accordance with this invention includes numerous improved features, including but not limited to: piston design, piston rod seal design, components and methods for providing pressure balancing among the discrete cycle volumes of the engine, and a control valve configuration for reducing starting torque and unloading the engine if desired.
Abstract:
A closed cycle heat engine (20) is provided. The heat engine (20) includes first and second expansion pistons (40, 42) that are fluidly coupled to a heater (24). The expansion pistons (40, 42) are also fluidly and operably coupled to a compression piston (32). A regenerator (28) extracts heat from a working fluid flowing from the expansion cylinders (36, 38) to the compression cylinders (34) to preheat the working fluid flowing to the heater (24). A cooler (26) is arranged in between the regenerator (28) and the compression cylinder (34) to remove additional heat before the working fluid reaches the compression cylinder (34). The heat engine (20) is arranged such that the working fluid travels unidirectionally within the engine (20). The heat engine (20) may further include one or more actuated valves (46, 48) for controlling the flow of the working gas. In one embodiment, the pressure of the crankcase (30) is controlled to be at or less than the heat engine (20) minimum pressure.
Abstract:
A closed cycle heat engine (20) is provided. The heat engine (20) includes first and second expansion pistons (40, 42) that are fluidly coupled to a heater (24). The expansion pistons (40, 42) are also fluidly and operably coupled to a compression piston (32). A regenerator (28) extracts heat from a working fluid flowing from the expansion cylinders (36, 38) to the compression cylinders (34) to preheat the working fluid flowing to the heater (24). A cooler (26) is arranged in between the regenerator (28) and the compression cylinder (34) to remove additional heat before the working fluid reaches the compression cylinder (34). The heat engine (20) is arranged such that the working fluid travels unidirectionally within the engine (20). The heat engine (20) may further include one or more actuated valves (46, 48) for controlling the flow of the working gas. In one embodiment, the pressure of the crankcase (30) is controlled to be at or less than the heat engine (20) minimum pressure.
Abstract:
A connecting rod comprising a body with two ends extending along a longitudinal axis of the connecting rod, a first flexible part provided on the body and oriented so that the connecting rod may flex in a first direction perpendicular to the longitudinal axis of the connecting rod, a second flexible part provided on the body and oriented so that the connecting rod may flex in a second direction perpendicular to the longitudinal axis of the connecting rod, and a third flexible part provided on the body and oriented so that the connecting rod may flex in a third direction perpendicular to the longitudinal axis of the connecting rod.