EP 2130201 B1 20140507 - HELMHOLTZ RESONATOR
Title (en)
HELMHOLTZ RESONATOR
Title (de)
HELMHOLTZ-RESONATOR
Title (fr)
RÉSONATEUR DE HELMHOLTZ
Publication
Application
Priority
- EP 2008053523 W 20080326
- US 90855707 P 20070328
Abstract (en)
[origin: WO2008116870A1] The invention relates to a Helmholtz resonator (6) for damping airborne sound in a space, particularly in a conduit (4, 5) transporting airborne sound, comprising a housing (8) surrounding a resonance volume (9), comprising at least one neck (10) for connecting the resonance volume (9) to the space or to the conduit (4, 5) transporting the airborne sound. The Helmholtz resonator (6) obtains at least two resonance frequencies if the housing (8) has at least one wall section delimiting the resonance volume (9), said wall section being formed by a vibratory membrane (11), and if the membrane (11) is tuned such that the resonance frequency thereof corresponds to the first order of the resonance frequency of an identically constructed Helmholtz resonator that does not have such a membrane (11).
IPC 8 full level
G10K 11/172 (2006.01); F01N 1/02 (2006.01)
CPC (source: EP US)
F01N 1/02 (2013.01 - EP US); G10K 11/172 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008116870 A1 20081002; EP 2130201 A1 20091209; EP 2130201 B1 20140507; US 2010212999 A1 20100826
DOCDB simple family (application)
EP 2008053523 W 20080326; EP 08735476 A 20080326; US 59317808 A 20080326