SEGMENT: Vacuum Ejectors
Title: Multi Jet Ejectors Ejectors are devices that rely upon the change in flow properties when flowing through variable cross-sectional geometries to bring about the compression and increase the gas/vapour pressure in the device. The change in flow properties occurs due to involvement of complex aerodynamic phenomenon. The dominant among them are mixing of supersonic flow with subsonic flow and compression due to Shock waves. The mixing process is responsible for a considerable wastage of energy which leads to reduction in Ejector efficiency. Multi Jet Ejectors employ multiple nozzles to inject the motive flow through multiple supersonic jets into the mixing volume. This helps to Distribute the energy from motive flow more evenly into the sucked flow which reduces the energy wastage. Multi-Nozzle Assembly in a Gas Jet Gas Ejector:
Motive consumption can be reduced by 10-25% with the use of Multi Jet Ejectors compared to a Single Jet Ejector.