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Systèmes de distribution d'air Cleanroom
Silencieux à conduit rectangulaire
A straight rectangular sound attenuator with aerodynamic splitters that absorbs fan and airflow noise within the duct path.
- Aerodynamic Acoustic Splitters
- Straight-Through Air Path
- Perforated Protective Liners
- Cleanroom Media Options
Introduction de produit
A rectangular duct silencer places parallel acoustic splitters inside a sealed galvanized casing. Perforated metal faces expose sound energy to the protected absorptive media while maintaining a defined straight airflow passage. Splitter thickness, air gap and overall length are selected to balance insertion loss against system pressure drop. For hygiene-sensitive air, polymer film liners or packless resonant construction isolate fibrous media from the airstream.
Key Features
Aerodynamic noses and tails reduce turbulence where air enters and leaves each baffle.
Perforated metal or film-protected faces prevent erosion of acoustic fill into the air stream.
Low-, medium- and high-velocity configurations match different pressure-drop allowances.
Préoccupations du client produit
A duct silencer must reduce the relevant frequency bands without consuming the fan pressure needed for filters and terminal devices.
Fan blade-pass noise travels directly through the supply main.Selected splitter spacing and length absorb energy in the dominant octave bands.
A restrictive silencer increases fan energy and reduces cleanroom airflow.Air-gap area and aerodynamic splitter profiles are sized for the scheduled face velocity.
Fibrous acoustic media is unacceptable in a critical supply stream.Film-lined or packless construction isolates or eliminates exposed fibrous fill.
The silencer casing leaks around splitter penetrations and seams.Sealed outer construction maintains the same leakage duty as the connected duct system.
Les applications typiques
Air-handling-unit discharge noise controlCleanroom supply-air mainsLaboratory exhaust systemsFan intake and outlet plenumsMechanical-room duct penetrations
Paramètres techniques
Representative construction ranges for a rectangular HVAC duct silencer are summarized below.
| Matériaux de base | High-density glass fiber, mineral wool or packless resonant acoustic elements |
|---|---|
| Panneau épaisseur | 100–300 mm acoustic splitter thickness |
| Largeur effective | 200–1600 mm duct connection width |
| Longueur maximale | 600–2400 mm silencer casing length |
| Acier face épaisseur | 0.8–1.2 mm galvanized casing and perforated liner |
| Densité Core | 32–64 kg/m³ absorptive acoustic media |
| Conductivité thermique | 0.034–0.041 W/(m·K) for straight-splitter absorptive fiber media |
| surface finie | G90 galvanized casing with perforated galvanized, film-lined or stainless airstream faces |
| Type joint | Rectangular flange connection matched to duct size with sealed casing seams |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
Absorptive, film-lined or packless constructionGalvanized, aluminum or stainless casingLow-, medium- or high-velocity splitter geometryExtended casing for enhanced low-frequency attenuation
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