| 摘要 |
<p>A reception hole (17) is formed in the main block (11) of a vacuum generator (10), and an ejector element (19) is fitted into the reception hole (17). The ejector element (19) is formed by joining a nozzle (45), which has a base end part at which an inflow hole (47) is formed and a tip end part at which a diffusion hole (48) is formed, to a diffuser (46) in which a suction hole (53) is formed. A compressed air supplied from an air pressure source through a solenoid valve (22) for air supply control is jetted from the nozzle (45) toward a diffuser flow passage (55). A vacuum flow passage (56) communicating with the suction hole (53) is made in the state of negative pressure by the jet flow from the nozzle. The tip end of the ejector element (19) is projected from the end surface of the main block (11). When a silencer assembly (32) is separated from the main block (11), the tip end of the ejector element (19) projects to the outside.</p> |
