| 摘要 |
This Stirling machine comprises a transfer piston (6, 6a) and a moving part (14) of a generator or of an electric motor, the transfer piston (6, 6a) periodically displacing a working gas between an expansion chamber (VE) and a compression chamber (Vc) which chambers are respectively associated with two working faces of the transfer piston (6, 6a) of which the cross-sectional area ratio ac/aE is >0.35 so that its displacement along an axis X oriented towards the expansion volume (VE) generates an in-phase working gas pressure component Px that opposes the displacement of the piston (6, 6a), so that all of the mechanical energy produced is transmitted to the moving part (14). This machine comprises a resonant second piston (10) coupled to the transfer piston (6, 6a) by a quantity of energy that is proportional to the pressure component Px. |
| 主权项 |
1. A Stirling machine comprising:
a displacer piston (6, 6a) comprising two working faces, a generator or an electric motor comprising a moving member, a cylinder (2), an expansion chamber (VE) and a compression chamber (VC) which constitute the working volume of said Stirling machine within said cylinder, a hot side heat exchanger (7) linked to a heat source, a regenerator (9), and a cooling exchanger (8) linked to a heat sink, and an elastic return means exerting a force on the displacer piston (6, 6a), the displacer piston (6, 6a) being mounted in said cylinder (2), in which it periodically displaces a working gas between the expansion chamber (VE) and the compression chamber (Vc), respectively associated with the two working faces of said displacer piston (6, 6a) and causing said gas to pass through said hot side heat exchanger (7), regenerator (9), and cooling exchanger (8), the cross-sectional area ratio (aC/aE) between the two working faces of said piston (6, 6a) being greater than or equal to 0.35 so that its displacement along an axis X oriented toward the expansion volume (VE) generates an in-phase pressure component Px of said working gas opposing said displacement of said piston (6, 6a), so as to transmit all of said mechanical energy produced between this displacer piston (6, 6a) and said moving member (14), characterized in that: the ratio of cross-sectional area (aC/aE) is less than 0.70, and the Stirling machine further includes at least one resonant piston (10), coupled to said displacer piston (6, 6a) by a quantity of energy proportional to said pressure component Px. |
