Patent ID: 9599110
Date: 2017-03-21
CPC Classifications: B01D,F04B,F04C,Y02C

Claim:
1. Device for pumping and treating gases comprising a stator comprising a plurality of pumping stages connected in series one after another between a suction side and a delivery side by an inter-stage duct, the device for pumping and treating gases comprising: an inner tube and a blind outer tube, the tubes being inserted one inside the other and made of ceramic material, the inner tube being connected to the delivery side of the rotor housing of a pumping stage and the outer tube being connected to the stator and communicating with at least one inter-stage duct formed in the stator, the tubes defining a path for the pumped gases, and a plasma source located outside the stator to generate a plasma in the path of the pumped gases; wherein the pumping stages further comprise