Rotary expansible chamber devices – Grooved abutting cylinder-rotating member end surfaces – Groove communicates with vane slot
Patent
1981-01-30
1983-09-13
Lazarus, Ira S.
Rotary expansible chamber devices
Grooved abutting cylinder-rotating member end surfaces
Groove communicates with vane slot
418 93, F04C 2902
Patent
active
044039298
ABSTRACT:
A rotary compressor including a housing having therein a cylindrical bore, and end plates closing opposite ends of the bore and supporting a rotary shaft supporting in turn a rotor formed with a plurality of circumferentially spaced vane grooves. A vane is slidably received in each vane groove and cooperates with the adjacent vane to define therebetween a working chamber. An oil groove is formed on a surface portion of one of the end plates which surface portion is located opposite to a path along which the bottoms of the vane grooves pass, at least in a position where the working chamber has its volume increased. A cover is attached to the one end plate to define therebetween a discharge chamber receiving therein fluid compressed by the vanes. A passage communicates an oil revervoir defined at the bottom of the discharge chamber and the axial end face of the shaft opposite to the one end plate with each other. The oil in the oil reservoir is introduced into the oil groove through the passage, along the outer periphery of the shaft, and through a gap between the rotor and the one end plate.
REFERENCES:
patent: 3743453 (1973-07-01), Abendschein et al.
patent: 3744942 (1973-07-01), Mount
patent: 3865520 (1975-02-01), Kramer et al.
patent: 3877853 (1975-04-01), Harlin
patent: 4071306 (1978-01-01), Calabretta
patent: 4104010 (1978-08-01), Shibuya
Kato Kimihiro
Nagasaku Eiichi
Yasunaga Masao
Lazarus Ira S.
Nippondenso Co. Ltd.
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