Screw compressor unit including a centrifugal clutch
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United States of America Patent
Stats
-
Oct 3, 1989
Grant Date -
N/A
app pub date -
Feb 4, 1988
filing date -
Feb 5, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The compressor unit consists of a screw compressor (2) and a drive motor (1), which is connected for drive purposes to the screw compressor (2) by way of an engageable and disengageable clutch (3) and can be temporarily stopped in order to control the throughput of the screw compressor (2). To allow starting of the compressor unit without the drive motor (1) becoming thermally overloaded, the clutch inserted between the drive motor (1) and screw compressor (2) is in the form of a known centrifugal clutch (3), the driving clutch member (17) being connectable to the driven clutch member (18) by means of friction plates (23, 28). For automatic operation of the centrifugal clutch (3), a control chamber (21) is provided, the presser plate (36) of which is adjustable against the friction plates (23, 28) by means of centrifugal weights (34). The presser plate (36) can be provided with return springs (40) and one of the friction plates (23) of the driving clutch member (17) can be pressed against the presser plate (36) of the control chamber (21) by one or more annular springs (41). Ventilation bores (45) and ventilation slots (46) are provided in the friction plates (23).
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