Use of thermal insulation for noise abatement

Details Use of thermal insulation for noise abatement Use of thermal insulation for noise abatement

2006-08-08

2006-08-08

Wilson, Gregory (Department: 3749)

Heating

Heating or heat retaining work chamber structure

Having expansion relieving or absorbing means

C432S248000, C181S224000, C181S292000

Reexamination Certificate

active

07086857

ABSTRACT:
In a residential furnace having a layered insulation material on the inner walls of the heat exchanger compartment, the inner aluminum foil layer has a plurality of holes formed therein in order to allow for the outer layer to absorb the sound within the heat exchanger compartment and thereby reduce the noise emanating from the furnace. Both the density and size of the holes are optimized to maximize the sound absorption performance over the particular frequency ranges that are characteristic of the furnace.

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patent: 6183837 (2001-02-01), Kim
patent: 6534145 (2003-03-01), Boyles
patent: 6769512 (2004-08-01), Bargo
patent: 6868940 (2005-03-01), Mekwinski

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