Rotary fluid machine

Details Rotary fluid machine Rotary fluid machine

2006-08-15

2006-08-15

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Positively actuated vane

Fluid biased

C418S076000, C418S082000, C418S098000, C418S259000, C384S322000, C384S372000

Reexamination Certificate

active

07090476

ABSTRACT:
A rotary fluid machine is provided in which a rotating shaft (113) fixed to a rotor (41) is rotatably supported on a fixed shaft (102) fixed to a casing (11), sliding surfaces of the fixed shaft (102) and the rotating shaft (113) are lubricated by a first pressurized liquid-phase working medium, and sliding surfaces of the rotor (41) and a vane (48) are lubricated by a second pressurized liquid-phase working medium. By setting the pressure of the first pressurized liquid-phase working medium, which is supplied from an eleventh water passage (W11), comparatively low and setting the pressure of the second pressurized liquid-phase working medium, which is supplied from a first water passage (W1), comparatively high, wasteful leakage of the liquid-phase working medium past the sliding surfaces of the fixed shaft (102) and the rotating shaft (113), where a comparatively small load is applied, can be prevented while enabling the sliding surfaces of the rotor (41) and the vane (48), where a large load is applied, to be reliably lubricated with a high pressure liquid-phase working medium.

REFERENCES:
patent: 3359731 (1967-12-01), Anderson
patent: 4255098 (1981-03-01), Hertell
patent: 4459091 (1984-07-01), Hertell
patent: 4498301 (1985-02-01), Tsubouchi
patent: 6240730 (2001-06-01), Thiele
patent: 50959 (1982-05-01), None
patent: 8-200268 (1996-08-01), None
patent: 2000-320543 (2000-11-01), None
patent: WO 00/53926 (2000-03-01), None

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