HELMHOLTZ RESONATOR WITH A POROUS SCREEN CAPABLE OF PREVENTING THE INFLOW OF FOREIGN MATERIALS INTO A CAVITY

摘要

PURPOSE: A Helmholtz resonator with a porous screen is provided to prevent absorbing performance from being easily changed in a specific frequency domain the despite property change of a resonator by increasing the resistance of a resonator and expanding the bandwidth of the resonant frequency due to the installation of the porous screen.;CONSTITUTION: According to a Helmholtz resonator with a porous screen, a porous screen(30) is installed in one selected from among the entrance, exit, and inside of the neck of a resonator(20). The porous screen is vertically positioned in the neck. The porous screen is a mesh of soft material.;COPYRIGHT KIPO 2010