Title:
THRUST MAGNETIC BEARING DEVICE
Document Type and Number:
Japanese Patent JP3215529
Kind Code:
B2
Abstract:
PURPOSE: To provide a thrust magnetic bearing device capable of being miniaturized in size and reducing the power capacity and having high reliability by providing a fluid thrust control mechanism utilizing the fluid pressure of a fine gap between a rotary disk and electromagnet stators for the position control in the axial direction via the signal of a displacement sensor.
CONSTITUTION: Air pressure paths 3A, 3B are provided on electromagnet stators 2A, 2B faced to each other at a gap of a fine interval on both sides of a rotary disk 1, and their release ports are faced to the rotary disk 1. Air intake ports 14A, 14B corresponding to spaces on both sides of the rotary disk 1 are opened to a casing 13 respectively in the spaces communicated with the fine intervals surrounded by the electromagnet stators 2A, 2B and the rotary disk 1. A fluid thrust control controller 10 is connected to a solenoid valve 11 and a regulator 12 by the signal of a thrust displacement sensor 5 so that a rotary shaft 6 fixed with the rotary disk 1 is moved to the preset target position, and the driving direction and the air pressure can be controlled.
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Inventors:
Ozawa
Youichi Kanemitsu
Youichi Kanemitsu
Application Number:
JP35099092A
Publication Date:
October 09, 2001
Filing Date:
December 04, 1992
Export Citation:
Assignee:
Ebara Corporation
International Classes:
F16C32/04; F16C32/00; F16C32/06; (IPC1-7): F16C32/04; F16C32/00; F16C32/06
Domestic Patent References:
| JP4185910A | ||||
| JP4296219A |
Attorney, Agent or Firm:
Isamu Watanabe (1 person outside)
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