| 摘要 |
<p>PURPOSE: To facilitate adjustment of outflow pressure of an ejector nozzle by providing a fixed part having one opening part and a remotely controllable movable part having one opening part at a nozzle outflow port end part. CONSTITUTION: At an outflow port end part of an ejector nozzle 4, a fixed part having an opening part 6, and a movable part 18 remotely controllable by an operation means 26 and having an opening part 20 are provided. An overlapping degree of the opening parts 6, 20 is thus changeable to change a cross sectional surface of an outflow port passage, thereby outflow pressure of the ejector nozzle 4 can be easily adjusted.</p> |
