Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1996-09-09
1999-09-21
Dang, Khanh
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181255, F01N 718
Patent
active
059557079
ABSTRACT:
To damp the sound in an air conditioning system, particularly a vehicle air conditioning system, a tubular sound damping body is provided having openings at its opposite ends through which a liquid or gaseous medium flows. A respective connection tube is fitted at at least one and preferably at both of the openings, with the tube being of smaller cross-section than the sound damping body and the openings into the sound damping body. An isolating device in the form of an isolating element is around the inserted portion of each connection tube and also engages the interior of the sound damping body. Isolating element receiving recesses may be defined in the inserted end portion of the connection tube and the ends of the sound damping body for receiving the isolating elements. The isolating elements are comprised of an elastic rubber like material. Alternately, a spacer may be disposed around the elastic isolation device and engages the isolation device on the inside and the sound damping body on the outside.
REFERENCES:
patent: 3669471 (1972-06-01), Fetish, Jr.
patent: 3687224 (1972-08-01), Lundin
patent: 4880078 (1989-11-01), Inoue et al.
patent: 4993513 (1991-02-01), Inoue et al.
patent: 5174127 (1992-12-01), Harper et al.
patent: 5340952 (1994-08-01), Takiguchi
Dang Khanh
Trinova GmbH
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