Dual frequency side branch resonator

Details Dual frequency side branch resonator Dual frequency side branch resonator

1998-11-20

1999-12-07

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181255, 181273, 181276, F01N 102

Patent

active

059967331

ABSTRACT:
A side branch resonator for attenuating sound waves of first and second frequencies, the side branch resonator comprising a discharge branch; a resonator branch; an inlet branch flow connected to the discharge branch having an axis, the resonator branch having a wall which defines a resonator branch interior; the resonator branch having an open resonator branch end and a closed resonator branch end; the resonator further comprising an attenuation member for attenuating the first frequency sound waves. The attenuation member is located in the resonator branch interior a first distance from the axis and upstream from the resonator branch closed end. The closed resonator branch end is located a second distance from the axis to provide attenuation of the second frequency sound waves.

REFERENCES:
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Thermo King Brochure, Whisper Edition, TK50118 (Oct. 1997).

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