CYLINDRICAL ACOUSTIC ABSORBING MEMBER Russian patent published in 2006 - IPC E04B1/84 

FIELD: industrial acoustics, particularly broadband noise reduction of industrial equipment.

SUBSTANCE: cylindrical acoustic absorbing member comprises rigid cage suspended to industrial building ceiling by cables. The cage is filled with sound-absorbing material covered with caprone netting. The cage comprises lower and upper round perforated lids tightly connected with each other by central rod axially aligned with horizontal lid projection centers. At least three cage side forming rods are located around lid perimeters so that the cage side may have cylindrical shape.

EFFECT: increased sound absorbing efficiency due to extended frequency range and improved performance.

2 cl, 1 dwg