专利内容由知识产权出版社提供
专利名称：REFRIGERANT COMPRESSOR CONTROL
SYSTEM
发明人：KENNETH JOHN KOUNTZ,RICHARD ALAN
ERTH,BRUCE KENVIN BAUMAN
申请号：AU3555278申请日：19780428公开号：AU3555278A公开日：19791101
摘要：The control system of the invention regulates a centrifugal compressor havinginlet guide vanes adjustable as one means for varying the compressor capacity. A variablespeed motor is connected to drive the compressor, and provides another means forregulating the compressor capacity. The control system regulates the motor speedalone over one portion of the load variation curve, and regulates the motor speed jointlywith the inlet guide vane opening over another portion of the load variation curve, toachieve the most energy-efficient operating condition while avoiding the surge condition.This optimum control path is realized by utilizing a signal which is a measure of thecompressor head value. Compressor surge or instability is avoided by deriving a criticalMach number (speed indication) for any given operating condition, as a function of thecompressor head and vane position, and preventing the motor speed from going belowthat Mach number under the specific operating conditions. The control system of theinvention is useful both with existing equipment, by way of retrofit, and with newlymanufactured and installed equipment.
申请人：BORG-WARNER CORPORATION
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