FIELD: machine building.
SUBSTANCE: in sound-absorbing structure containing solid and perforated surfaces a multi-layer sound-absorbing material is located between the surfaces. The sound-absorbing element is made out of three layers: central layer out of sound reflecting material with complex profile, containing uniformly distributed hollow tetrahedrons, and symmetrically abutting to it sound-absorbing layers out of the materials with different density. As the sound-absorbing material the mats out of mineral wool "Rockwool", or "URSA", or out of basalt wool P-75 are used. The sound-absorbing element is lined with acoustically transparent material.
EFFECT: enhanced efficiency of sound absorption and reliability of the structure.
5 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| KOCHETOV'S SOUND-ABSORBING STRUCTURE | 2014 |
|
RU2541701C1 |
| SOUND-ABSORBING STRUCTURE | 2014 |
|
RU2561389C1 |
| KOCHETOV(S SOUND-ABSORBING ELEMENT | 2014 |
|
RU2561394C1 |
| KOCHETOV'S PIECE NOISE ABSORBER | 2014 |
|
RU2558817C1 |
| KOCHETOV(S SINGLE ACOUSTIC ABSORBER | 2014 |
|
RU2574196C2 |
| MULTI-SECTION SILENCER BY KOCHETOV FOR NOISE REDUCTION OF GAS-DYNAMIC PLANTS EXHAUST | 2014 |
|
RU2604262C2 |
| ELEMENT OF KOCHETOV NOISE SUPPRESSOR | 2014 |
|
RU2604263C2 |
| MULTI-SECTION NOISE SUPPRESSOR | 2014 |
|
RU2603875C2 |
| ACOUSTIC DISSIPATION ELEMENT FOR ACOUSTIC BAFFLES, PIECE SOUND ABSORBERS, PARTITIONS | 2013 |
|
RU2550604C2 |
| SOUND-ABSORBING STRUCTURE | 2013 |
|
RU2531154C1 |
