Patent ID: 6772599
Filing Date: 2004-08-10
Classification: F04D,F25B

Abstract:
A method for detecting a compressor instability in a multiple compressor refrigeration system, the method comprising the steps of:determining an operating parameter from both a first compressor of a multiple compressor refrigeration system and a second compressor of the multiple compressor refrigeration system; comparing the operating parameter of the first compressor to the operating parameter of the second compressor; determining an inlet vane position for both the first compressor and the second compressor; comparing the inlet vane position of the first compressor to the inlet vane position of the second compressor; and determining a compressor instability in one of the first compressor and the second compressor in response to the one of the first compressor and the second compressor having both a lower operating parameter and a more open inlet vane position than the other compressor of the first compressor and the second compressor.