AIRFOIL JOURNAL BEARING

Abstract: the present invention provides an airfoil journal bearing including a bearing housing, a bump foil provided inside the bearing housing, formed in a circumferential direction, and coupled to the bearing housing, and a top foil provided inside the bump foil, formed in the circumferential direction, and having one end, based on the circumferential direction, fixedly coupled to the bearing housing, and the other end configured as a free end, in which the other end, which is the free end of the top foil, is formed to exceed one end in a direction in which the top foil extends based on one end fixed to the bearing housing, such that the other end of the top foil is disposed to overlap one side in the circumferential direction. therefore, when a rotor disposed inside the top foil rotates, the pressure of air flowing along the rotor is prevented from being lost at a portion adjacent to the free end of the top foil, thereby improving the rigidity and damping performance implemented by fluid dynamic pressure of the airfoil journal bearing.

Inventor(s): Jong Sung LEE, Hyun Chil KIM, Gunwoong PARK, Min Gyu PARK, Chi Yong PARK, Yeol Woo SUNG, Kyu Sung CHOI

CPC Classification: F16C17/024 (SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS)

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