1 : one that ejects especially : a mechanism of a firearm that ejects an empty cartridge. 2 : a jet pump for withdrawing a gas, fluid, or powdery substance from a space.

What are ejectors used for?

The ejector is widely used as a vacuum pump where it is staged when required to achieve deeper vacuum levels. If the motive fluid pressure is sufficiently high, the ejector can compress gas to a slightly positive pressure. Ejectors are used both as subsonic and supersonic devices.

How do ejectors work?

An Ejector works by accelerating a high pressure stream (the 'motive') through a nozzle, converting the pressure energy into velocity. ... The two fluid streams then travel through the diffuser section of the Ejector, where velocity is decreased as a result of the diverging geometry and pressure is regained.