Exhaust muffler including venturi tube

Details Exhaust muffler including venturi tube Exhaust muffler including venturi tube

1980-09-02

1982-11-30

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181272, F01N 108

Patent

active

043612067

ABSTRACT:
A muffler comprising a housing having inlet and outlet ends and having a venturi tube of smaller diameter than the housing disposed therewithin in communication with its outlet end is disclosed. The venturi comprises a first bell reducer, which reduces the cross-sectional area of the venturi to substantially half its original value, a straight tubular section of cross-sectional area equal to the reduced area and of as great length as possible within the venturi, and a gradually diverging section connecting the straight section of reduced area to a perforate tube, of substantially equal area as the inlet of the venturi and communicating with the outlet of the housing. Several distinct embodiments of the invention are disclosed, which vary by means causing additional diversion of the gases from their straight path.

REFERENCES:
patent: 992839 (1911-05-01), Wolle
patent: 1876861 (1962-09-01), Compo
patent: 1881051 (1932-10-01), Haas
patent: 2235705 (1941-03-01), Haas et al.
patent: 3672464 (1972-06-01), Rowley
patent: 3679024 (1970-09-01), Kirkland
patent: 4267899 (1981-05-01), Wagner et al.

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