| 摘要 |
In a tube mail installation having an impeller for generating the conveying air stream, it is intended that the pressure side (5) of the impeller (4) be connected to the conveying section (1) of the installation via an injector nozzle (7) so as to reduce outlay in terms of construction and operation. Preferably, the air to be fed to the nozzle (7) from the impeller (4) is taken from the section in the direction of flow immediately before the nozzle (7). Furthermore, it may be advantageous to assign two mutually remote nozzle arrangements to the same impeller in a reversible manner, so that the conveying direction can easily be changed. <IMAGE> |
