Radial foil bearing
AssigneeKturbo, Inc.
InventorHeon Lee
Life of this patent
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Abstract
The present invention provides a radial foil bearing for supporting a high-speed rotating shaft. The radial foil bearing comprises a top foil (1): a key (2) welded to a cut portion of the top foil; an inner bump coil (3) disposed outwards of the top foil, the inner bump being formed of a wider and higher bump and a narrower and lower bump alternately arranged; an outer bump foil (4) disposed outwards of the inner coil, the outer bump having a height lower the that of the narrower and lower bump of the inner bump foil; a bump sheet (5) for fixing the inner bump and the outer bump; and a bearing housing (6) disposed outwards of the bump sheet and having a key groove (7).
Claims3
A radial foil bearing comprising:
- a) a top foil 1 satisfying condition represented by an equation t ≧0.1·D0.33 (wherein t is the thickness(mm), D is the diameter of a shaft(mm)).
- b) a key 2 welded to a cut portion of the top foil 1;
- c) an inner bump foil 3 disposed outwards of the top foil, the inner bump being formed of a wider and higher bump and a narrower and lower bump alternately arranged;
- d) an outer bump foil 4 disposed outwards of the center of the wider and higher bump of the inner bump foil 3, the outer bump having a height lower than that of the narrower and lower bump of the inner bump foil 3;
- e) a bump sheet 5 for fixing the inner bump 3 and the outer bump 4;
- and
- f) a bearing housing 6 disposed outwards of the bump sheet 5 and having a key groove 7.
(canceled)
Dependencies are inferred from the claim text.