Patent ID: 9541301
Date: 2017-01-10
CPC Classifications: B60H,F24F

Claim:
1. A silencer for reducing noise and vibration transmitted through a coolant pipe conveying a coolant gas and a lubricating oil therethrough, the silencer comprising: a silencer body tube including a resonance hole formed in an outer circumferential surface thereof; and an external resonance tube disposed around the outer circumferential surface of the silencer body tube, a resonance chamber having a total volume defined between the outer circumferential surface of the silencer body tube and the external resonance tube, the total volume of the resonance chamber absorbing a vibration and a noise of the coolant gas flowing through the silencer body tube, the resonance hole providing fluid communication between the silencer body tube and the resonance chamber and lubricating oil introduced into the resonance chamber flowing downward in a gravity direction and discharging into the silencer body tube through the resonance hole.