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Schallabsorber in Lueftungskanaelen

Noise absorber for air duct in building glazing.
: Fuchs, H.V.; Leistner, P.; Krueger, J.

Frontpage ()

DE 1997-19730355 A: 19970715
DE 1997-19730355 A: 19970715
DE 19730355 C1: 19990318
Patent, Elektronische Publikation
Fraunhofer IBP ()

NOVELTY - The sound absorber has a micro-perforated plate (2) defining part of the air duct. The plate can form one or more side walls of the air duct (1) which has a rectangular section. An integral wall of the duct can be perforated. The plate can alternatively be mounted inside the air duct. USE - For glazing i.e. double glazing panels in building walls. ADVANTAGE - Allows Does not require use of sound absorbing fibers. DESCRIPTION OF DRAWING(S) - Drawing shows sketch view of duct and plate Duct wall 1 Perforated plate 2