Vacuum pump with magnetic bearing system, backup bearings and se

Details Vacuum pump with magnetic bearing system, backup bearings and se Vacuum pump with magnetic bearing system, backup bearings and se

1999-02-26

2000-06-20

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68B, 4174234, F04B 3504

Patent

active

060781203

ABSTRACT:
A vacuum pump a the magnetic bearing assembly includes the magnetic bearing assembly with rotor position sensors and backup bearings being placed inside the rotatable shaft of the vacuum pump. The sensor placements are independent of the bearing position, so that the respective radial sensors can be at the same axial position as the respective radial bearings, which provides sensors co-location and a space saving within a turbopump housing, in particular, in its axial direction, while sensors and mechanical backup bearings are placed in a better protected area with respect to pumped corrosive gases.

REFERENCES:
patent: 4023920 (1977-05-01), Baechler et al.
patent: 4541772 (1985-09-01), Becker
patent: 4583794 (1986-05-01), Takahara et al.
patent: 4652820 (1987-03-01), Maresca
patent: 4683111 (1987-07-01), Helm et al.
patent: 4878813 (1989-11-01), Miki
patent: 5106273 (1992-04-01), Lemarquand et al.
patent: 5227948 (1993-07-01), Boon et al.
patent: 5469007 (1995-11-01), Toyama
patent: 5760510 (1998-06-01), Nomura et al.

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