F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
F04D 19/04 (2006.01) F04D 17/16 (2006.01)
Patent
CA 2332777
A friction vacuum pump (1) with a stator (3) and a rotor (4) forming at least two pump stages (12, 13, 14) each with one gas inlet (23, 28), in addition to connecting means for the pump stages, whereby said means are fitted with connecting openings (36, 37) and are used to connect the gas inlets of the (23, 28) of the pump stages to devices that are to be emptied. In order to avoid high losses in conductance, the connecting openings (36, 37) are located on a single plane which is to the side of and close to the pump stages (12, 13, 14), whereby the distance between the connecting openings (36, 37) and the axis (15) of the rotor is as short as possible.
Pompe à vide (1) à friction dotée d'un stator (3) et d'un rotor (4) qui forment au moins deux étages (12, 13, 14) de pompe avec chacun un orifice d'entrée (23, 28) de gaz, ainsi que de moyens de raccord pour les étages de pompe, lesdits moyens de raccord étant équipés d'ouvertures de raccord (36, 37) et servant à la connexion des orifices d'entrée (23, 28) de gaz des étages de pompe avec les installations dans lesquelles le vide doit être fait. Selon la présente invention, pour éviter des pertes de conduction élevées, les ouvertures de raccord (36, 37) se trouvent dans un plan qui est situé latéralement à proximité des étages (12, 13, 14) de pompe, si bien que l'écart entre les ouvertures de raccord (36, 37) et l'axe (15) du rotor est le plus petit possible.
Adamietz Ralf
Beyer Christian
Englander Heinrich
Fischer Hans-Rudolf
Henry Markus
Fetherstonhaugh & Co.
Leybold Vakuum Gmbh
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