VENTILATION SILENCER USING RESONANCE AND EXPANSION OF SOUND WAVE

摘要

PURPOSE: A muffler using resonance and expansion of sound wave for ventilation is provided to achieve winding effect due to repetitive expansion and resonance with including a plurality of resonance chambers and expansion rooms. CONSTITUTION: A muffler using resonance and expansion of sound wave for ventilation comprise: a cylindrical outer pipe(1) wherein a plurality of resonator chambers and expansion chambers are formed in the inside; a plurality of partitions(2) which is installed in the inside of the outer pipe and divides the inside of the outer pipe into a plurality of spaces and forms an air hole(21) wherein air and sound wave pass through; and a perforated tube(3) which is installed in the internal space of the muffler in the central part of the partitions which is divided by the partitions and includes resonant cavities(31).