FIELD: ventilation.
SUBSTANCE: invention relates to ventilation and is designed to reduce aerodynamic noise in the air ducts of the systems of mechanical ventilation and air conditioning. The device has a body equipped with a removable grid in the admission hole and having a convergent shape. There is a sound-absorbing material with a perforated screen adjacent to the body and the ratio of the diametres of the admission hole and outlet hole are in an optimum range of the values Dadmission/Doutlet=1.2÷1.4.
EFFECT: this structure provides for an effective muffling of noise in the dust-laden air flow environment while the system of ventilation and air conditioning is on.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| NOISE MUFFLER (NM) (OPTIONS) | 2020 |
|
RU2752539C1 |
| DEVICE FOR DEADENING AERODYNAMIC NOISE | 0 |
|
SU1244423A1 |
| AIRFLOW MUFFLER (OPTIONS) | 2020 |
|
RU2752219C1 |
| AERODYNAMIC NOISE SILENCER (ANS) | 2022 |
|
RU2779672C1 |
| NOISE SUPPRESSOR | 2007 |
|
RU2338964C1 |
| CHAMBER SILENCER OF NOISE OF INDUSTRIAL VACUUM CLEANER | 2016 |
|
RU2642011C1 |
| CHAMBER VACUUM CLEANER NOISE SUPPRESSOR | 2015 |
|
RU2627483C2 |
| CHAMBER NOISE MUFFLER OF INDUSTRIAL VACUUM CLEANER | 2017 |
|
RU2645374C1 |
| CHAMBER SOUND SUPRESSOR | 2016 |
|
RU2624155C1 |
| CHAMBER SOUND SUPPRESSOR | 2015 |
|
RU2604969C1 |
