(19)
(11) EP 3 002 405 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.09.2016 Bulletin 2016/36

(43) Date of publication A2:
06.04.2016 Bulletin 2016/14

(21) Application number: 14187298.6

(22) Date of filing: 01.10.2014
(51) International Patent Classification (IPC): 
E06B 7/02(2006.01)
 F24F 13/24(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 15.09.2014 SE 1451077

(71) Applicant: Casamja AB
124 71 Bandhagen (SE)

(72) Inventors:
  • Karlén, Lennart
    128 38 SKARPNÄCK (SE)
  • Castwall, Hans
    761 32 NORRTÄLJE (SE)

(74) Representative: Groth & Co. KB 
P.O. Box 6107
102 32 Stockholm
102 32 Stockholm (SE)

   


(54) Silencing arrangement


(57) According to the invention, there is provided a silencing arrangement for installation (11) in a through opening in a window frame or in another opening through a separating surface. The arrangement comprises a plurality of air channels (14) which extend along the entire or substantially the entire depth of the silencing arrangement, which air channels are separated by sound absorbing elements (13) which are fixated relative each other. A first end of each of at least two of the sound absorbing elements has another width than the respective other end. The at least two sound absorbing elements of the sound absorbing elements are alternately arranged such that every other of these at least two sound absorbing elements taper in the depth direction of the silencing arrangement, and the remaining of these at least two sound absorbing elements expand in the depth direction, thereby making at least one of the air channels disposed at an angle relative the depth direction of the silencing arrangement.







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Search report