Dynamically balanced, hydraulically driven compressor/pump apparatus for resonant free piston Stirling engines

Patent · Tue May 29 04:00:00 EDT 1984

OSTI ID:865020

Corey, John A ^[1]

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1. North Troy, NY

A compressor, pump, or alternator apparatus is designed for use with a resonant free piston Stirling engine so as to isolate apparatus fluid from the periodically pressurized working fluid of the Stirling engine. The apparatus housing has a first side closed by a power coupling flexible diaphragm (the engine working member) and a second side closed by a flexible diaphragm gas spring. A reciprocally movable piston is disposed in a transverse cylinder in the housing and moves substantially at right angles relative to the flexible diaphragms. An incompressible fluid fills the housing which is divided into two separate chambers by suitable ports. One chamber provides fluid coupling between the power diaphragm of the RFPSE and the piston and the second chamber provides fluid coupling between the gas spring diaphragm and the opposite side of the piston. The working members of a gas compressor, pump, or alternator are driven by the piston. Sealing and wearing parts of the apparatus are mounted at the external ends of the transverse cylinder in a double acting arrangement for accessibility. An annular counterweight is mounted externally of the reciprocally movable piston and is driven by incompressible fluid coupling in a direction opposite to the piston so as to damp out transverse vibrations.

• Assignee: Mechanical Technology Incorporated (Latham, NY)
• Patent Number(s): US 4450685
• Application Number: 06/384,304
• OSTI ID: 865020
• Country of Publication: United States
• Language: English

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