ACOUSTIC RESONATORS WITH MULTI-TUNING FUNCTIONS

摘要

PURPOSE: A multi-tuning resonator is provided to enable to reduce noise of various frequency regions transmitted through a flow tube without changing a physical structure. CONSTITUTION: A multi-tuning resonator(100) comprises a neck part(110), a body part(120), and an orifice plate(130). The neck part is mounted to a flow tube where fluid flows so that the inside of the neck part is communicated with the flow tube. The body part is extended from the neck part, thereby forming an expanded space for resonance. The orifice plate is mounted in the inner circumference of the body part for dividing an inner volume of the body part. The orifice plate is formed into a doughnut shape.