BROADBAND NOISE ABSORBER OF VENTILATION EQUIPMENT FOR WINDOW

摘要

PURPOSE: A broadband noise preventing device of a window ventilation system is provided to reduce noise by driving a fan near a user. CONSTITUTION: A broadband noise preventing device of a window ventilation system comprises a sound absorption and resonance type sound absorbing member(12), a receiving member(14), a muffler(16), a hollow absorbers(18a,18b). The receiving member is formed into the hollow cylindrical type and is inserted inside the sound absorption and resonance type absorber. The muffler is inserted inside the receiving member in order to reduce the noise from the connection module. The hollow absorber is respectively fixed and coupled in both ends of the resonance type absorber and sound absorption.