Patent ID: 8147145
Filing Date: 2012-04-03
Classification: F01D,F16C

Abstract:
1. A journal bearing device, the journal bearing device being divided vertically into an upper bearing and a lower bearing and comprising: a rotor of a rotary machine; a bearing having a bearing liner and a bearing base metal, the rotor being held by the bearing device, where the bearing base metal has an upper bearing base metal and a lower bearing base metal, and the bearing liner is made of a material different from that of the bearing base metal and the bearing liner has an upper bearing liner and a lower bearing liner; a cooling groove disposed in an outer circumferential surface of the lower bearing liner and extending along a circumferential direction of the lower bearing liner; means for supplying a lubricant to the cooling groove to ensure that the lubricant flows in the cooling groove in an opposite direction to a rotational direction of the rotor, wherein the lubricant that passes through the cooling groove is supplied to a bearing load-receiving surface of the lower bearing; and means, disposed at a shaft-sliding surface of the inner circumferential side of the bearing liner above a supply position of the lubricant supplying means, for discharging the lubricant to the outside of the bearing.