| 摘要 |
<p>The jet pump comprises an injection head connected to a casing provided in the collector nozzle and a mixer tube adjacent to the nozzle and coaxial to the propulsion nozzle. The mixer tube is connected to a second line, optionally by means of a diffuser. The mixer tube extends through a chamber into which at least a third line opens, said third line being directed transversally to the mixer tube. In order to decrease the noise and to obtain a higher efficiency, the mouth piece (20, 21) of the third line and optionally of a fourth line (18, 19) is laterally spaced from the propulsion nozzle (10). An elongated annular channel (22), surrounding the mixer tube (14), is part of the casing and is arranged between the mouth pieces (20, 21) and the propulsion nozzle (10).</p> |
