| 摘要 |
<p>A current-guiding and silencing device for a fan is formed by the connection of a square pipe body (1) and a round air outlet pipe body (2). The inner sides of four corner parts of the square pipe body (1) are connected to the round air outlet pipe body (2) by a current-guiding arc surface (3). An included angle between a tangent line of any point of the current-guiding arc surface (3) and the air supplying direction is 100-200 degrees. The device has better silencing effect, less air energy consumption, high air volume, and energy-saving and environment-friendly functions. Furthermore, the device reduces the material usage amount, and saves the production cost.</p> |
