Rotary expansible chamber devices – With plural working fluid inlet or outlet passages
Patent
1981-02-11
1983-10-11
Yuen, Henry C.
Rotary expansible chamber devices
With plural working fluid inlet or outlet passages
418255, F03C 200
Patent
active
044089686
ABSTRACT:
A rotary compressor including a housing having therethrough a cylindrical bore, end plates attached to the housing to close the open axial ends of the bore respectively, an eccentric rotor rotatable in the bore and vanes slidably mounted in the rotor. A working chamber defined between the adjacent pair of vanes communicates with a discharge chamber outside of the housing through a discharge opening in the wall of the housing. First and second passages have their respective one ends opening to the cylindrical bore and the respective other ends communicating with the discharge chamber. The one end of the first passage is positioned at a location or adjacent thereto where the leading one of the adjacent pair of vanes is positioned when the working chamber defined therebetween has its volume starting to decrease. The one end of the second passage is positioned at a location where the one end of the second passage together with the discharge opening is opened to one of the discharge chambers with the latter having its volume decreased and communicating with the discharge opening. First and second check valves respectively in the passages are opened only when the working chambers respectively associated with the passages have therein pressures higher than respective predetermined values.
REFERENCES:
patent: 2129960 (1938-09-01), Presby
patent: 3156410 (1964-11-01), LeRiche
patent: 3301474 (1967-01-01), Buchel
patent: 3964447 (1976-06-01), Normandin
patent: 3995977 (1976-12-01), Takahasi et al.
patent: 4133617 (1979-01-01), Reynand
patent: 4233003 (1980-11-01), Jeng
Inagaki Mitsuo
Ito Seitoku
Sasaya Hideaki
Nippon Soken Inc.
Yuen Henry C.
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