×

Method and apparatus for controlling beats and minimizing pulsation effects in multiple compressor installations

  • US 6,018,957 A
  • Filed: 12/07/1998
  • Issued: 02/01/2000
  • Est. Priority Date: 12/07/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. 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; and

    means 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.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×