Venturi muffler with variable throat area

Details Venturi muffler with variable throat area Venturi muffler with variable throat area

1996-05-08

1998-10-13

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181229, 138 46, F01N 100

Patent

active

058214755

ABSTRACT:
The invention is directed to a muffler for a gas flow at a gas intake of a achine. The muffler includes at least one venturi nozzle cooperating with a chamber. Each venturi nozzle has an inlet opening, an outlet opening and a throat therebetween. The chamber has a chamber inlet connected to either the inlet opening or the outlet opening of each venturi nozzle. The chamber has a chamber outlet connected to the gas intake of the machine. Some embodiments of the invention feature variation of the total throat area of the muffler. Other embodiments of the invention feature variation of the volume enclosed by the chamber.

REFERENCES:
patent: 4690245 (1987-09-01), Gregorich et al.
patent: 4693339 (1987-09-01), Beale et al.
patent: 5137439 (1992-08-01), Lundin
patent: 5174113 (1992-12-01), Deville
patent: 5530214 (1996-06-01), Morehead et al.

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