Rotary hydraulic machine

Details Rotary hydraulic machine Rotary hydraulic machine

2005-07-19

2005-07-19

Lazo, Thomas (Department: 3745)

Expansible chamber devices

With fluid purifying means

Means separates gas from liquid

C092S086000

Reexamination Certificate

active

06918336

ABSTRACT:
An expander that converts the thermal energy and the pressure energy of a working medium into mechanical energy includes, within a casing (12, 15, 18), an operating part such as a group of axial piston cylinders operated by the working medium introduced into an operating chamber, and a hermetically sealed lubrication chamber (102) in which oil for lubricating at least the operating part resides. Breather chambers (101, 103) are provided in an upper part of the lubrication chamber (102), and a working medium discharge chamber (90) into which the working medium is discharged from the operating chamber is made to communicate with the breather chambers (101, 103) via breather passages (B1to B4). A mixture of oil and the working medium that has leaked from the operating chamber into the lubrication chamber (102) is separated in the breather chambers (101, 103), the oil is returned to the lubrication chamber (102), and the working medium is returned to the working medium discharge chamber (90) via the breather passages (B1to B4). This enables the influence of mixing of the oil and the working medium within the casing of the expander to be minimized.

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