AIRFOIL JOURNAL BEARING HAVING IMPROVED TOP FOIL

WIPO Patent Application WO/2017/131368

A1

The present invention relates to an airfoil journal bearing having an improved top foil, comprising: a bearing housing having a hollow portion in which a rotor is disposed, and formed such that width-wise both sides are opened; a bump foil provided at an inner side of the bearing housing and formed along the circumferential direction thereof, and coupled and fixed to the bearing housing; and a top foil provided at an inner side of the bump foil and formed along the circumferential direction thereof, and of which one side is coupled and fixed to the bearing housing, wherein the top foil comprises: an outer top foil coming into close contact with the bump foil; an inner top foil provided at an inner side of the outer top foil so as to come into contact with the rotor; and an intermediate top foil interposed between the outer top foil and the inner top foil, and of which the length is formed to be shorter than those of the outer top foil and the inner top foil such that the other end portion thereof is positioned at a lower side of the rotor, and thus the horizontal movement range of the rotor can be reduced during the rotation of the rotor, and a squeeze angle formed by the rotor and the top foil is increased such that the rotor can float at a low rotational speed, thereby enabling the wear and vibration of the top foil to be reduced.

LIM JAEMAN (KR)

PCT/KR2017/000419

August 03, 2017

January 12, 2017

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NEUROS CO LTD (KR)

F16C17/02; F16C32/06; F16C33/10

WO2015005547A1

2015-01-15

JP2002372042A	2002-12-26
JP2012193833A	2012-10-11
JP2005233427A	2005-09-02
KR20090043161A	2009-05-06

See also references of EP 3409960A4

PLUS INTERNATIONAL IP LAW FIRM (KR)

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