Relative gas spring configuration free-piston stirling cycle sys

Details Relative gas spring configuration free-piston stirling cycle sys Relative gas spring configuration free-piston stirling cycle sys

1991-05-01

1992-05-05

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 1043

Patent

active

051096730

ABSTRACT:
A Free-Piston Stirling cycle system includes a cylinder arranged within a sealed, pressurized housing. A power piston is arranged for reciprocation within or about one region of the cylinder, and a light-weight displacer, having a selected diameter is arranged for reciprocation within or about another region of the cylinder and defining with the cylinder a compression space and an expansion space. The power piston also defines with the cylinder, a gas spring space. A gas spring piston of preselected diameter couples the displacer with this gas spring space to establish a relative gas spring which generates a force to reciprocate the displacer by the relative motion between the displacer and the power piston. In accordance with this present invention the ratio of the diameter of the gas spring piston to the diameter of the displacer is made to be at least 0.50.

REFERENCES:
patent: 4802332 (1989-02-01), Beale
patent: 4945726 (1990-08-01), Beale

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