Apparatus and method for attenuating sound generated by machinery

摘要

Apparatus and method for attenuating sound generated by machinery is disclosed and is particularly relevant to noises and sounds emanating from domestic appliances such as dishwashers. The enclosure of the dishwasher is lined with a sound absorbing material which includes holes or openings therein to permit the extension of portions of the appliance's apparatus or equipment mounted within the enclosure to be positioned closer to the interior surface of the enclosure than to an interior surface of the absorbing material. Caps are formed of material having the same recipe as the absorbing material but having a different density and which are compressed, heated, and subsequently placed over said openings to completely enclose the machinery and equipment within the appliance enclosure.

主权项

1. A sound attenuating system for reducing sound emanating from an enclosure containing mechanical components comprising:
(a) an enclosure having enclosure walls for enclosing mechanical components; (b) a sheet of sound absorbing material of predetermined constituents and having a predetermined thickness contacting an interior surface of said enclosure walls and exposed to said mechanical components; (c) an opening in said sheet of sound absorbing material to permit a portion of the mechanical components mounted within said enclosure to be positioned closer to an interior surface of said enclosure walls; and (d) a cap of sound absorbing material of said predetermined constituents having a thickness less than said predetermined thickness, secured over said opening.