Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1979-11-07
1982-02-23
Hix, L. T.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181229, 181252, 181257, E04F 1704, F01N 110, F02M 3512
Patent
active
043165222
ABSTRACT:
A sound silencer for insertion in a duct having a fluid medium flowing therethrough includes an outer housing having an open entry end, an open exit end, a base portion, a roof portion, and a pair of opposed sidewalls. The silencer further includes a plurality of spaced apart sound attenuating members which are disposed upright within the housing. The sound attenuating members are arranged in columns and rows, each of the sound attenuating members being disposed substantially normal to the housing base and extending from the base to the housing roof such that the sound attenuating members define a first plurality of through passageways substantially parallel to the direction of the main flow of the fluid medium and extending from the entry end of the housing to the exit end thereof and a second plurality of through passageways disposed substantially perpendicular to the direction of the main flow of the fluid medium and extending from one of the housing side walls to the other side wall. Each of the sound attenuating members may be substantially filled with a sound absorptive material, with each face of the sound attenuating members being acoustically transparent or, alternatively opaque. Thus, the silencer combines dissipative, i.e., sound absorptive components with the overall reactive configuration of the silencer so as to effectively attenuate noise in a wide range of high and low frequencies.
REFERENCES:
patent: 2299112 (1942-10-01), Schilling
patent: 2916101 (1959-12-01), Naman
patent: 3033307 (1962-05-01), Sanders et al.
patent: 3195679 (1965-07-01), Duda et al.
patent: 3435911 (1969-04-01), Greenheck
patent: 3511336 (1970-05-01), Rink et al.
Ver et al., "Design of a Toned Muffler for Large Induced-Draft Fans", Inter-noise 78, May 8, 1978, pp. 309-316.
Hix L. T,.
Industrial Acoustics Company, Inc.
Tarcza Thomas H.
LandOfFree
Acoustic filter silencer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic filter silencer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic filter silencer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1771410