Discharge Muffler manufacturers explain the types of mufflers

Time of issue:

2022-03-29 08:36

Origin:

Discharge Muffler manufacturers said that a muffler is a common acoustic device that prevents sound from propagating and allows airflow to pass through, and is an important measure to eliminate aerodynamic noise. So what types of mufflers are there?
1. Resistive muffler
According to discharge muffler manufacturers, the resistive muffler is a device that fixes the porous sound-absorbing material on the inner wall of the airflow channel or in the pipeline in a certain arrangement to reduce airflow noise. The sound-absorbing material and protective layer material used in the muffler should be selected according to the usage conditions in the airflow duct.
2. Resistant muffler
According to discharge muffler manufacturers, the resistant muffler uses the change of the cross-sectional area of the airflow channel or the bypass of the resonance cavity and the branch pipe to make the sound wave reflect, resonate or interfere to achieve the purpose of noise reduction.

Discharge Muffler manufacturers
3. Impedance composite muffler
The impedance composite muffler has high noise reduction and noise reduction frequency bandwidth. However, the calculation of noise reduction is more complicated, and it is generally measured by experiments.
4. Micro-perforated plate muffler
The micro-perforated plate muffler is a muffler made of metal micro-perforated plate fixed in the airflow duct. Discharge muffler manufacturers said that the advantages of this type of muffler are high noise reduction, noise reduction frequency bandwidth, small pressure loss, high temperature resistance, airflow impact resistance, and not afraid of moisture.
5. Throttle step-down muffler
The muffler made of the principle of throttling and depressurization is generally used for the control of jet noise.