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ACOUSTICALLY INSULATED MACHINE

  • US 20120298154A1
  • Filed: 05/24/2011
  • Published: 11/29/2012
  • Est. Priority Date: 05/24/2011
  • Status: Active Grant
First Claim
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1. An acoustically insulated machine comprising:

  • a machine having an internal source of noise;

    an insulation member comprising a plurality of porous, sound absorbing layers and a plurality of dense layers attached to faces of the sound absorbing layers;

    wherein the dense layers have densities that are greater than densities of the sound absorbing layers;

    wherein the insulation member is oriented such that one of said dense layers faces toward said internal source of noise;

    wherein said dense layer that faces the internal source of noise is configured to allow a majority of airborne acoustic energy having frequencies from about 100 Hz to about 800 Hz from the internal source of noise to pass into the insulation member.

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