EP 0404801 B1 19931118 - SILENCER FOR A GAS FLOW.
Title (en)
SILENCER FOR A GAS FLOW.
Title (de)
SCHALLDÄMPFER FÜR STRÖMENDE GASE.
Title (fr)
SILENCIEUX POUR L'ECOULEMENT D'UN FLUIDE GAZEUX.
Publication
Application
Priority
FR 8803183 A 19880311
Abstract (en)
[origin: WO8908771A1] The silencer comprises a tubular envelope (7) supported by an end-piece (10) for fixture to a gas supply source in which the pressure is to be reduced. A perforated plate (8) and a disc (9) close off the ends of the envelope which is drilled with escape apertures (13, 13', 13''...) in the region of the disc (9). According to the invention, the gas flows at sonic speed through the plate (8) to enter the envelope (7) which is completely filled with a packing (14) consisting of a tightly-wound roll of wire mesh. Said packing absorbs the shock waves developed by the supersonic flow of the gas in the packing. The latter maintains a subsonic flow with a low noise level upstream of the silencer. Application to the treatment of a surface by blasting of a gas flow.
IPC 1-7
IPC 8 full level
F01D 25/02 (2006.01); F01N 1/08 (2006.01)
CPC (source: EP US)
F01D 25/02 (2013.01 - EP US); F01N 1/082 (2013.01 - EP US); F01N 2310/04 (2013.01 - EP US); F01N 2310/14 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8908771 A1 19890921; DE 68910816 D1 19931223; DE 68910816 T2 19940609; EP 0404801 A1 19910102; EP 0404801 B1 19931118; FR 2628477 A1 19890915; FR 2628477 B1 19930514; US 5166479 A 19921124
DOCDB simple family (application)
FR 8900099 W 19890309; DE 68910816 T 19890309; EP 89903496 A 19890309; FR 8803183 A 19880311; US 57158090 A 19900911