FIELD: reduction of noise from aerodynamic sources.
SUBSTANCE: noise silencer has internal tube with input and output holes; tube forms channel for passing air through. Tube is made of permeable shape-preserving fiber-porous polymer material, for example, of fiber-porous polyethylene or fiber-porous polypropylene. Tube is provided with airtight internal case made of galvanized steel sheet. Case is mounted to have gap relatively the tube and is filled with sound-absorbing material, for example, glass wool.
EFFECT: improved degree of noise reduction within standardized frequency spectrum.
21 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PIPING ARTICLE | 2004 |
|
RU2253791C1 |
| AERODYNAMIC NOISE SILENCER (ANS) | 2022 |
|
RU2779672C1 |
| SOUND-INSULATING CASING WITH AERODYNAMIC MUFFLERS | 2017 |
|
RU2651562C1 |
| NOISE SILENCER OF BUSHING TYPE | 2016 |
|
RU2639420C2 |
| NOISE MUFFLER (NM) (OPTIONS) | 2020 |
|
RU2752539C1 |
| SILENCER | 0 |
|
SU1745993A1 |
| INTERNAL COMBUSTION ENGINE MULTICHAMBER MUFFLER | 2001 |
|
RU2192548C2 |
| INDUSTRIAL VACUUM CLEANER NOISE COMBINED SILENCER | 2016 |
|
RU2653612C1 |
| SOUND-INSULATING CASING WITH AERODYNAMIC MUFFLERS | 2017 |
|
RU2671279C1 |
| ACTIVE NOISE SUPPRESSOR OF INDUSTRIAL VACUUM CLEANER | 2015 |
|
RU2594088C1 |
