| 摘要 |
<p>The present invention relates to the noise reduction apparatus for penetrating duct pipe. It includes the film combined to be surrounded by the outer side of the pipe in the way the division point to be created when the fluid to flow into the pipe installed to penetrate the duct collides is located into the rear side of the pipe and the trace of thin turbulence is formed due to the air resistance from the rear side of the pipe; the inducing part to make the division point created when the fluid to flow in the duct collides with the pipe located in the rear side of the pipe of the direction the fluid flows. Accordingly, it has the effect to minimize the noise pollution near the penetrating duct pipe.</p> |
