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Noise control of air conditioner

  • US 5,203,178 A
  • Filed: 05/07/1991
  • Issued: 04/20/1993
  • Est. Priority Date: 10/30/1990
  • Status: Expired due to Fees
First Claim
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1. In an air conditioning apparatus having a condenser fan, an evaporator fan, a compressor, and at least two motors for driving the fans and the compressor, the improvement comprising means, responsive to vibration of the apparatus, for controlling a speed of each of said motors to reduce the vibration;

  • wherein said controlling means performs a test to determine optimum speeds of said motors to minimize the vibration, said controlling means includinga microcomputer means operative during the test to change the speed of at least one of said motors to each of a plurality of speed values within a predetermined speed range, andat least one detector for detecting values of the vibration, said controlling means controlling said at least one of said motors, at a termination of the test, to operate at a speed value at which the vibration is minimized.

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