PROBLEM TO BE SOLVED: To improve cooling effect of a bearing unit including multiple bearings.SOLUTION: A bearing unit 4 includes multiple bearings 11, 12 and cools the multiple bearings 11, 12 by an ambient fluid passing through interior parts of these bearings 11, 12. The multiple bearings 11, 12 include: a first bearing 11 disposed at the upstream side in an ambient fluid flow direction; and a second bearing 12 disposed at the downstream side of the first bearing 11. The bearing unit 4 includes: a first passage 21 in which the ambient fluid passes through the interior part of the first bearing 11 and the interior part of the second bearing 12; and a second passage 22 in which the ambient fluid passes the interior part of the second bearing 12 without passing through the interior part of the first bearing 11.SELECTED DRAWING: Figure 2
【課題】複数の軸受を備える軸受ユニットの冷却効果を高める。【解決手段】軸受ユニット4は、複数の軸受11,12を備えるとともに、これらの軸受11,12の内部に周囲流体を通過させて冷却する。複数の軸受11,12は、周囲流体の流動方向における上流側に配される第一軸受11と、第一軸受11よりも下流側に配される第二軸受12とを含む。軸受ユニット4は、周囲流体が第一軸受11の内部と第二軸受12の内部とを通過する第一流路21と、周囲流体が第一軸受11の内部を通過することなく第二軸受12の内部を通過する第二流路22と、を備える。【選択図】図2
BEARING UNIT
軸受ユニット
2018-09-27
Patent
Electronic Resource
Japanese