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Patent Searching and Data


Title:
AIRFOIL JOURNAL BEARING HAVING IMPROVED TOP FOIL
Document Type and Number:
WIPO Patent Application WO/2017/131368
Kind Code:
A1
Abstract:
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.

Inventors:
LIM, Jaeman (#101-1504, 15 Seongnam-ro,Dong-gu, Daejeon, 34582, KR)
Application Number:
KR2017/000419
Publication Date:
August 03, 2017
Filing Date:
January 12, 2017
Export Citation:
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Assignee:
NEUROS CO., LTD. (274 Techno 2-ro, Yuseong-gu, Daejeon, 34027, KR)
International Classes:
F16C17/02; F16C32/06; F16C33/10
Domestic Patent References:
WO2015005547A12015-01-15
Foreign References:
JP2002372042A2002-12-26
JP2012193833A2012-10-11
JP2005233427A2005-09-02
KR20090043161A2009-05-06
Attorney, Agent or Firm:
PLUS INTERNATIONAL IP LAW FIRM (10F 809, Hanbat-daeroSeo-gu, Daejeon, 35209, KR)
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