发明名称 |
CONTROL SYSTEM FOR HELICAL SCREW COMPRESSOR |
摘要 |
<p>CONTROL SYSTEM FOR HELICAL SCREW COMPRESSOR A helical screw air compressor unit has a rotary capacity control valve, a compressor inlet throttling valve, and a pressure relief valve for venting the compressor discharge conduit. A control circuit senses pressure in the compressed air supply system downstream of the compressor and operates the capacity control valve, inlet throttling valve, and pressure relief valve in a predetermined sequence to provide an improved power consumption characteristic for variable demand compressor applications. The control circuit includes a hydraulic control valve and an actuator for operating the rotary capacity control valve to regulate compressor throughput to maintain a predetermined pressure without overpressuring the supply system during operation at conditions of reduced demand for compressed air.</p> |
申请公布号 |
CA1047463(A) |
申请公布日期 |
1979.01.30 |
申请号 |
CA19770269365 |
申请日期 |
1977.01.07 |
申请人 |
GARDNER-DENVER COMPANY |
发明人 |
SHOOP, JOHN C.;POST, ROGER L.;HERSCHLER, MICHAEL G. |
分类号 |
F04C28/00;F01K;F04B19/12;F04B49/00;F04B49/02;F04B49/08;F04C18/16;F04C28/06;F04C28/12;F04C28/24;F04C28/26;(IPC1-7):04C17/12;04B49/02 |
主分类号 |
F04C28/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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