Patent ID: 6018957
Filing Date: 2000-02-01
Classification: F04B,F04C,F25B,F25D,Y02B

Abstract:
Means for reducing beats and pulsation effects in refrigeration systems comprising:a plurality of compressors located in an equipment room;means for driving one of said plurality of compressors;a variable frequency drive for driving another one of said plurality of compressors;means for sensing a parameter produced by said one compressor and for producing a signal indicative thereof;means for sensing a parameter produced by said another one of said plurality of compressors and for producing a signal indicative thereof;said parameter being selected from fluid pressure pulsations, structural vibrations and sound radiation; andmeans for controlling said variable frequency drive responsive to signals received from said means for sensing a parameter indicative of beats and pulsation effects produced by said one and said another compressor whereby beats and pulsation effects are reduced.