Airflow noise suppressors for fans are a series of devices designed to mitigate aerodynamic noise generated by fans. They are used for noise suppression in the intake and exhaust ducts of various centrifugal and axial fans.
I. Overview

Our GF series of air silencers are designed to mitigate aerodynamic noise generated by fans, serving as noise attenuation devices for the intake and exhaust ducts of various centrifugal and axial flow ventilators.

II. Product Features

The series of silencers are of impedance type. The design of the acoustic absorption panel structure and fluid channels is primarily based on the spectral characteristics obtained from actual noise source measurements at various fan operation sites in power plants, determining the required noise reduction levels in specific frequency ranges. A narrow rectangular channel with a large material surface is used to enhance absorption. At the highest noise level, the noise source of the fan often has multiple spectral values, and the requirements for noise reduction vary across different frequency bands. This product utilizes resistive structures for high and medium-frequency noise reduction and resistive structures for medium and low-frequency noise reduction. High and low-frequency noise reduction zones are also incorporated in the resistive channels to maximize the broadening of the noise reduction frequency range, achieving an excellent noise reduction effect. After installation according to specifications, the maximum noise level will not exceed 85-90 decibels.
Section 3: Specifications and Models

IV. Ordering Instructions for Dust Extraction Fan Mufflers:
Acoustic (noise reduction) targets and installation locations facilitate the selection of the appropriate muffler model.
2. Interface shapes (square, round) with dimensions for easy installation and connection
3. Airflow: m³/H, m³/min, or m³/sec
4. Pressure Pa, KPa, MPa
5. Installation location, exhaust or intake air vent