| 摘要 |
<p>The invention relates to a coupling between a centrifugal fan and the suction inlet thereof, comprising a suction inlet (1) defining an opening (2) for the passage of a flow of fluid under suction and a rotatably mounted centrifugal suctioning fan (3). A closure coupling is formed around the opening (2), between said centrifugal fan (3) and the suction inlet (1), by means of fitting together flanges (7) of the centrifugal fan (3) and flanges (8) of the suction inlet (1), which flanges define therebetween a labyrinthine passage that obstructs the ingress of an air disturbing flow through the coupling.</p> |
