| 摘要 |
PURPOSE: A vacuum ejector is provided to improve assemblability and rigidity, to reduce material cost and to allow easy setting of connection by forming components of the ejector integrally with a body of a valve unit. CONSTITUTION: An ejector comprises a valve unit(10) including a body(11) having an input port(12), a suction port(13) and an output port(14) bored on a side thereof, and a negative pressure breaking control valve(19) and a vacuum generating control valve(20) mounted on an upper side of the body to be separated therefrom, and supplying compressed air introduced through the input valve to the suction port or an ejector part(30), respectively; the ejector part formed integrally with a surface of the body, and integrally including a pressure chamber(31) connected with the input port through the vacuum generating control valve, vacuum chambers(32,33) connected with the suction port, a discharge chamber(34) connected with the output port, and nozzle holes(36,37) connecting the chambers in order; and a plate type cover covering the ejector part, and preventing unnecessary movement of air between the chambers.
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