| 摘要 |
A rotary compressor includes housing means in which an impeller is rotatably mounted. The impeller carries a pair of abutting vanes engaging with outer ends the inner surface of the housing means extending along an endless cam curve to form, between this inner surface and the outer surface of the impeller and portions of the vanes projecting beyond the impeller, working spaces increasing and decreasing during rotation of the impeller so as to compress a gaseous medium passing through radially inward extending inlet passages into the working spaces, to pass from there through valves in the vanes into a central pressure space from where the compressed medium is discharged through an outlet passage communicating with the pressure space; and a method for operating the compressor in which oil for lubrication and sealing is fed together with the gaseous medium into the low pressure side of the compressor to be separated from the gaseous medium by centrifugal action and passed back over gaps between the elements of the compressor to the low-pressure side, whereby a separate oil circuit is created and the pressure medium is passed free of oil to a consumer.
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