Function principle rotary vane compressor
Rotation compressors are also called rotary piston, rotary vane, multi-cell or sliding vane compressors. They are rotating displacement machines.
The rotor with its vanes, placed eccentrically in the housing, forms the central element.
If the rotating speeds are sufficiently large, the vanes are moved outward by the centrifugal force. Together with the rotor and the housing, they form sickle-shaped cells. These cells enlarge (suction area) and reduce periodically (compression area) with every turn.
The cell is closed towards the suction area at the largest volumes. The compressed medium will reach the consumer after volume reduction or pressure increase in the cell.
Function principle screw compressor
Screw compressors are rotating displacement machines.
Two screw rotors form the central element. They run contact-free towards each other and the housing and are synchronised by a linkage.
Air is extracted continually at each turn; the working space is closed off and then reduced.
Function principle liquid ring pump
Liquid ring pumps work according to the positive displacement principle.
The impeller placed eccentrically in the housing forms the central element.
If the housing is partially filled with water, a liquid ring that will rotate along will form once the revolutions are fast enough.
The placement of the impeller together with the resulting liquid ring creates cells that are separated from each other.
These cells enlarge (suction area) and reduce (compression area) continually with every turn.