A vacuum pump

Details A vacuum pump A vacuum pump

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 19/04 (2006.01) F04D 27/02 (2006.01)

Patent

CA 2698485

The invention relates to a vacuum pump (10) having a pump rotor (16), and active magnetic bearing (20,21), a safety bearing (22,23) associated with the magnetic bearing (20,21), an electric drive motor (18) having a motor stator having a plurality of stator coils (191,192,193) for driving the pump rotor (16), a brake relay (42) having a plurality of changers each having a base contact (62,63,64), a brake contact (44,45,46) and an operational contact (47,48,49), and a short circuit point (60) by way of which all brake contacts (44,45,46) of the brake relay (42) are directly connected to each other. All stator coils (191,192,193) are connected to the base contacts (62,63,64) of the changer, and can be connected directly to each other by way of the brake contacts (44,45,46) of the brake relay (42) and by way of the short circuit point (60), and can be connected to an inverter module (32) by way of the operational contacts (47,48,49).

L'invention concerne une pompe à vide (10) comprenant un rotor de pompe (16), un palier magnétique actif (20, 21), un palier d'arrêt (22, 23) associé au palier magnétique (20, 21), un moteur électrique d'entraînement (18) présentant un stator avec plusieurs bobines de stator (191, 192, 193), pour l'entraînement du rotor de pompe (16), un relais de freinage (42) à plusieurs inverseurs ayant chacun un contact de base (62, 63, 64), un contact de freinage (44, 45, 46) et un contact de fonctionnement (47, 48, 49), et un point de court-circuit (60) par l'intermédiaire duquel tous les contacts de freinage (44, 45, 46) du relais de freinage sont directement connectés entre eux. Toutes les bobines de stator (191, 192, 193) sont connectées aux contacts de base (62, 63, 64) de l'inverseur, et peuvent être connectées directement entre elles, via les contacts de freinage (44, 45, 46) du relais de freinage (42) et via le point de court-circuit (60), et peuvent être connectées, via les contacts de fonctionnement (47, 48, 49), avec un module convertisseur (32).

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