Capacity and internal compression control device in a screw compressor
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United States of America Patent
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Sep 16, 1986
Grant Date -
N/A
app pub date -
Apr 29, 1983
filing date -
Apr 30, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a device for controlling a screw compressor, in which a rotor housing (10) includes a compression space (15) with two intermeshing rotors. In parallel with the rotors, at their discharge side two axially movable sliding valves (20, 21) are located, viz. one inner (20) and one outer sliding valve (21). The inner sliding valve (20) is movable in the outer sliding valve (21). One of the sliding valves is arranged for controlling the internal compression in the compression space (15), while the second sliding valve is arranged for controlling the capacity of the compressor.
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