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VACUUM-GENERATING PUMPING SYSTEM AND PUMPING METHOD USING THIS PUMPING SYSTEM

  • US 20170298935A1
  • Filed: 09/26/2014
  • Published: 10/19/2017
  • Est. Priority Date: 09/26/2014
  • Status: Abandoned Application
First Claim
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1. Pumping system for generating a vacuum, comprising a main vacuum pump which is a dry screw pump having a gas suction inlet connected to a vacuum chamber and a gas discharge outlet leading into a gas evacuation conduit in the direction of a gas exhaust outlet outside the pumping system,the pumping system being characterized in that it comprisesa non-return valve positioned between the gas discharge outlet and the gas exhaust outlet, andan auxiliary vacuum pump connected in parallel to the non-return valve.

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