Inlet silencer

Details Inlet silencer Inlet silencer

2010-11-04

2011-11-29

San Martin, Edgardo (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S252000

Reexamination Certificate

active

08066096

ABSTRACT:
An inlet silencer for an air inlet in a housing, which housing contains a source of high frequency noise radiated by an air intake for the source of high frequency noise, comprises: a plenum that extends longitudinally within the housing that couples the air inlet in an upstream region of the plenum to the air intake for the source of high frequency noise in a downstream region of the plenum; a partition that extends laterally within the plenum between the upstream region of the plenum and the downstream region of the plenum; at least one channel that penetrates longitudinally through the partition that has a gap across its inner surface that approximates one wavelength of at least one fundamental frequency of high frequency noise that the source of high frequency noise generates; and acoustic damping material that lines the inner surface of the channel.

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