Vacuum pump - a unit of the vacuum system for creating and vacuum support.
The main parameters of the vacuum pump must include the following:
- minimum residual pressure which can create a pump;
- the pumping rate of gas per unit of time - the pump capacity (l / s, m³ / h)
Vacuum pumps are classified as by vacuum type, and on the device.
According to the type of vacuum pumps can be divided into low pumps (105 ... 102 Pa), average (102 ... 10-1 Pa), high (10-1 ... 10-5) and ultrahigh (10-5 Pa or lower) vacuum.
According to the structural features pumps are mechanical, piston (including mercury-piston), diaphragm, rotary vane (including water ring), screw, Roots, spool, coil, magnitorazryadnye, jet, steam-oil, diffusion, steam-booster, sorption, cryogenic.