Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1992-06-12
1993-10-05
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 556, 418 57, 418 99, F01C 104, F01C 2104
Patent
active
052499413
ABSTRACT:
A scroll type fluid machine is provided with a mechanism for injecting oil into fluid working chambers such that a precise amount of oil is supplied without using any capillary tube, instead using intermittent oil feed from an oil sump through a communicating passage into the working chambers. Within a sealed casing, a first scroll having a spiral ridge and a second scroll having a spiral ridge are interleaved forming working chambers therebetween. A precise amount of oil is supplied to the working chambers from an oil sump which is in flow communication with an oil feed chamber provided on the end face of a cylinder member which is in sliding contact with the end plate of the second scroll. The oil feed chamber is in intermittent flow communication with a communicating passage which intermittently connects the oil feed chamber to the working chambers as the second scroll revolves.
REFERENCES:
patent: 4568256 (1986-02-01), Blain
patent: 4648814 (1987-03-01), Shiibayashi
patent: 4795321 (1989-01-01), Etemad et al.
patent: 5101644 (1992-04-01), Crum et al.
Daikin Industries Ltd.
Vrablik John J.
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