FIELD: power industry.
SUBSTANCE: silencer includes head-frame ventilation stand with wall closed in transverse plane and provided with air-permeable openings, ceiling and roof, and external enclosure made in the form of an upward diverging funnel with sound reflecting inner surface and arranged with a gap relative to ventilation stand. Wall and ceiling of ventilation stand are made of high-porous noise-absorbing blocks. External enclosure is provided with the roof which has an annular through slot in transverse plane. At that, air openings made in the wall of ventilation stand are located in crossing rows between adjacent noise absorbing blocks.
EFFECT: reducing the noise level in vicinity of head-frame structures.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| VENTILATION BOOTH OF THE METRO | 2007 |
|
RU2319079C1 |
| VENTILATION BOX OF THE SUBWAY | 2008 |
|
RU2368848C1 |
| METRO VENTING CABIN | 2006 |
|
RU2286459C1 |
| VENTILATION SYSTEM WITH NOISE SILENCER OF UNDERGROUND STRUCTURE | 2009 |
|
RU2393352C1 |
| METHOD OF ACOUSTICAL PROTECTION OF THE OPERATOR | 2017 |
|
RU2651566C1 |
| DEVICE FOR ACOUSTIC PROTECTION OF OPERATOR | 2014 |
|
RU2648733C2 |
| KOCHETOV'S SHOP ACOUSTIC STRUCTURE | 2014 |
|
RU2565281C1 |
| SOUND-ABSORBING STRUCTURE OF ROOF OF LARGE ROOM WITH REDUCED REVERBERATION TIME | 2018 |
|
RU2769015C2 |
| LOW-NOISE TECHNICAL ROOM | 2019 |
|
RU2716043C1 |
| SHOP FLOOR SOUND-ABSORBING STRUCTURE | 2013 |
|
RU2521100C1 |
