Liquid jet vacuum ejectors are simple and versatile devices: they generate vacuum by using a jet of water or other pressurized liquid that sucks in gas and steam, compressing them to an intermediate pressure between the driving and suction pressures.
During this operation, depending on the relationship between pressure and temperature, the aspirated vapours can be partially or totally condensed.
Liquid jet ejectors consist of three main components: nozzle, suction chamber and diffuser.
They are compact in size compared to the performance they provide; having no moving parts, they require no maintenance.
Being self-priming, they are ideal for intermittent operations; in fact, they are often used as an aid to non-priming pumps.
Although simple in construction, to ensure the required performance they require adequate design that corresponds to the operating conditions.
