| 摘要 |
PURPOSE:To absorb vibration by inserting a pipe having a small effective area into a hollow chamber and installing a rotary body which is revolved by the flow of the fluid in the pipe and properly generating resonance having an arbitrary frequency even in the case when the axial length of the pipe member is short. CONSTITUTION:One edge of a pipe member 22 is inserted into a base plate 12, and the other edge of the pipe member 22 is opened to the atmosphere. A rotary body 24 is arranged inside the pipe member 22 so as to be shifted in the longitudinal direction of the pipe member 22. The shift amount in the longitudinal direction of the rotary body 24 is regulated by the stoppers 25A and 25B projecting in the direction for reducing the inside diameter towards the inside of the pipe member 22. With such constitution, vibration is applied onto an elastic member 16 through a top plate 14, and gas-column resonance is generated on the pipe member 22, and said vibration can be effectively absorbed by the rotary body 24. |
