Fuel-cell compressed-air supplying device
AssigneeJtekt Corporation
InventorsManabu TANIGUCHI, Hirochika Ueyama, Yasukata Miyagawa
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Abstract
A fuel-cell compressed-air supplying device 6 includes a centrifugal compressor 12 provided in a casing 11, and a bearing device 14 for supporting a rotation shaft 13 of the compressor 12. The bearing device 14 includes a pair of radial foil bearings 21 and 22 provided coaxially with the rotation shaft 13 for supporting the rotation shaft 13 in the radial direction, and an axial magnetic bearing 23 facing to the rotation shaft 13 in the axial direction for supporting the rotation shaft 13 in the axial direction. Axial electromagnets 24 and 25 of the axial magnetic bearing 23 are integrated with the radial foil bearings 21 and 22, respectively.
Claims9
A fuel-cell compressed-air supplying device for compressing air and supplying the compressed air to a fuel-cell, comprising:
- a centrifugal compressor provided in a casing;
- and
- a bearing device for supporting a rotation shaft of the compressor, wherein
- the bearing device includes a pair of radial foil bearings provided coaxially with the rotation shaft for supporting the rotation shaft in the radial direction, and control-type axial magnetic bearing having a pair of axial electromagnets facing to flange portions provided in the rotation shaft in the axial direction for supporting the rotation shaft in the axial direction, and
- the axial electromagnet of the axial magnetic bearing is integrated with the radial foil bearing.
Dependencies are inferred from the claim text.