Vacuum pump

Details Vacuum pump Vacuum pump

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 19/04 (2006.01)

Patent

CA 2737136

A vacuum pump comprises a first pumping section (106), and, downstream therefrom, a second pumping section (108). The pump comprises a first pump inlet (120) through which fluid can enter the pump and pass through both the first and second pumping sections towards a pump outlet, and a second pump inlet (122) through which fluid can enter the pump and pass through only the second pumping section towards the outlet. The second pumping section (108) comprises an externally threaded rotor (109).

L'invention concerne une pompe à vide comprenant une première section de pompage (106) et une seconde section de pompage (108) en aval de la première. Cette pompe comprend par ailleurs une première entrée (120) par laquelle un fluide peut pénétrer dans la pompe et passer à travers la première et la seconde section de pompage en direction d'une sortie, ainsi qu'une seconde entrée (122) par laquelle un fluide peut pénétrer dans la pompe et passer à travers uniquement la seconde section de pompage en direction de la sortie. La seconde section de pompage (108) comprend un rotor à filetage externe (109).

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