Supply pipe muffler - Shandong tube muffler pipe muffler price sales hotline: 13573487358 Texas Hao Feng ventilation and air conditioning equipment products factory specializing in the production of various central air-conditioning end product muffler many types, but their silencer mechanism, and can separate them for the six main types, namely, resistive muffler, muffler, impedance composite muffler, micro-perforated plate muffler, muffler holes and active muffler. Resistive muffler hole collapsed mainly using sound-absorbing materials to reduce noise. The sound-absorbing material is fixed to the inner wall of the gas flow passages are arranged in a certain way or in the pipeline, constitutes a resistive muffler. When sound waves enter the resistive muffler, a portion of the acoustic energy is converted into frictional heat energy dissipated in the pores of the porous material, so that the sound waves weaken through the muffler. Resistive muffler as if pure electrical resistance of the circuit on the sound-absorbing material is similar to the resistance. Therefore, people put this muffler called resistive muffler. Resistive muffler silencer effect on the high-frequency, low-frequency muffling effect is poor. Folding muffler is a combination of tubes and chambers mutation interface made, seems to be an acoustic filter, similar to electrical filters, each with a small room is a mesh tube filter tube air quality is quite in the inductance and resistance on the electrical, called acoustic mass and an acoustic resistance. Small volume of air in the chamber on electrically equivalent capacitance, called acoustic compliance. And electrical filter similar to a small room with a tube each has its own natural frequency. When containing various frequency components of sound waves into the first short tube, only certain frequencies of the first in the cell close to the natural frequency of the sound wave to reach the second short tube opening through the mesh, while others frequency Sonic is impossible. Only reflected back and forth in a small chamber through the mesh, so we call this sound waves have a filtering function of the filter structure for acoustics. Select the appropriate combination of tubes and chambers. You can filter out the noise of some frequency components, so as to achieve the purpose of silencing. Muffler suitable for the elimination of the low-frequency noise. The resistive structure and resistant structure combined in accordance with a certain way, they constitute.