| 摘要 |
<p>Pump allowing a molecular vacuum to be created, comprising a stator (1) and a rotor assembly comprising two rotors with parallel shafts (4, 5), rotating in opposite directions, the stator comprising an induction inlet (2) and a discharge outlet (3), characterised in that it is axially divided into a first area (A) situated on the induction side, followed by a second area (B), the said first area being of the twin rotor, bladed turbomolecular type, the said second area (B) being of the twin rotating piston or screw type, with two parallel shafts, one (4) of the shafts being driven by a motor (20) and the other by way of transmission means (8, 9).</p> |
