| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of air column vibration from a vibrator and comparatively easily reduce the generated air column vibration with comparatively simple structure without requiring a cover surrounding the entire vibrator and a control device of complicated structure suppressing vibration. SOLUTION: The vibrator is formed to reciprocatingly vibrate a vibrator body 1 of box-like structure tiltedly disposed downward from the upstream to the downstream side in the diagonally aft-and-fore direction. The upper face of the vibrator body 1 is composed of a circular cover 5 protruded upward to reduce air resistance at the vibration of the vibrator body 1, and the front and rear end faces of the vibrator body 1 are composed of circular front side end plate 6 and a rear side end plate 7 respectively protruded forward and rearward to reduce air resistance at the vibration of the vibrator body 1, to suppress the air column vibration outside the vibrator by reducing air pulse caused by the vibration of the vibrator body 1. COPYRIGHT: (C)2008,JPO&INPIT
|
