Vacuum pump

F - Mech Eng,Light,Heat,Weapons – 04 – D

Patent

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Details

F04D 17/16 (2006.01) F04D 19/04 (2006.01) F04D 29/04 (2006.01)

Patent

CA 2662670

A vacuum pump comprises a housing, a drive shaft supported by a bearing arrangement for rotation relative to the housing about an axis, and a pumping mechanism comprising a stator component mounted on the housing and a disk-shaped rotor component mounted on the drive shaft axially proximate the stator component. The bearing arrangement comprises a bearing supported in both radial and axial directions by a resilient support, comprising inner and outer annular portions connected by a plurality of flexible members, so that there is a fixed relation between the inner race of the bearing and the outer portion of the resilient support to determine the axial clearance between the rotor and stator components of the pumping mechanism.

L'invention concerne une pompe à vide comprenant un boîtier, un arbre d'entraînement supporté par un système de paliers de manière à tourner relativement au boîtier autour d'un axe, ainsi qu'un mécanisme de pompage comprenant un élément de stator monté sur le boîtier et un élément de rotor en forme de disque monté sur l'arbre d'entraînement, de manière axiale, à proximité de l'élément de stator. Le système de paliers comprend un palier supporté dans le sens radial et dans le sens axial par un support élastique, comprenant une partie annulaire intérieure et une partie annulaire extérieure reliées par une pluralité d'éléments flexibles, de sorte qu'il existe une relation fixe entre la bague intérieure du palier et la partie extérieure du support élastique permettant de déterminer le jeu axial entre l'élément de rotor et l'élément de stator du mécanisme de pompage.

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