Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1978-02-17
1978-11-28
Hix, L. T.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181247, 181257, 181267, 181282, 181286, G01S 966
Patent
active
041271831
ABSTRACT:
A silencer device for attenuating fluid borne noise has a flow through housing with an open upstream end for the entrance of a fluid into the housing and a coaxial open downstream end for exhausting the fluid from the housing. An entrance header formed of a plurality of spaced apart intersecting elongated members defining a plurality of rectangular entrance apertures, each elongated member having a V-shaped transverse cross-section shape and oriented with its apex pointed in an upstream direction, is coextensively disposed over the upstream open end. An exhaust header also formed of a plurality of spaced apart intersecting elongated members defining a plurality of rectangular exhaust apertures, each elongated member having a V-shaped transverse cross-section shape and oriented with its apex pointed in a downstream direction, is coextensively disposed over the downstream open end. A plurality of open ended fluid flow tubes having perforated longitudinal walls extends between the entrance header and exhaust header. Each flow tube has one of its open ends in registration with a different one of the rectangular entrance apertures of the entrance header. Likewise, the opposite open end of each flow tube is in registration with a different one of the rectangular exhaust apertures of the exhaust header. The interior of the housing is packed with a sound absorbing material to surround the perforated longitudinal walls of the flow tubes.
REFERENCES:
patent: 2299112 (1942-10-01), Schilling
patent: 2489048 (1949-11-01), Rinehart
patent: 2595047 (1952-04-01), Beranek
patent: 3019850 (1962-02-01), March
patent: 3895686 (1975-07-01), Savkar et al.
American Air Filter Company, Inc.
Fuller Benjamin R.
Hix L. T,.
Winger Jon C.
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