The present disclosure relates to a resonator, and more particularly, to a resonator installed at the rear of a turbo charger of a vehicle and combined with a Helmholtz resonator and a groove type resonator to attenuate both high-frequency noise and low-frequency noise. The resonator installed at the rear of a turbo charger of a vehicle to attenuate an inhaling noise includes: at least one Helmholtz resonator having a cavity in an air introduction path extending into a duct so that the cavity is formed in a radial direction of the duct; and at least one groove type resonator provided at the rear of the Helmholtz resonator and protruding outwards in the radial direction of the duct.
1. A resonator installed at the rear of a turbo charger of a vehicle to attenuate an inhaling noise, the resonator comprising:
at least one Helmholtz resonator having a cavity in an air introduction path extending into a duct so that the cavity is formed in a radial direction of the duct; and
at least one groove type resonator provided at the rear of the Helmholtz resonator and protruding outwards in the radial direction of the duct,
wherein the at least one groove type resonator is spaced apart from the at least one Helmholtz resonator along a longitudinal direction of the duct.
2. The resonator according to claim 1 , wherein the Helmholtz resonator has a front portion and a rear portion based on the cavity, and the length of the front portion is smaller than the length of the rear portion.
3. The resonator according to claim 1 wherein the groove type resonator includes a first groove type resonator and a second groove type resonator subsequently formed along the air introduction path, where the width of the first groove type resonator is smaller than that of the second groove type resonator and the height of the first groove type resonator is greater than that of the second groove type resonator.