ROTATING MACHINE

• Main Authors: MIYATA HIROYUKI, NAGAO HIDEKI, KOBAYASHI MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 30.08.2021
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; HEAT PUMP SYSTEMS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

To improve rotor dynamics of a rotating shaft.SOLUTION: A rotating machine comprises: a casing for covering a rotating shaft to be rotated around an axis; a pair of radial bearings fixed to the casing for rotatably supporting the rotating shaft; a compressing part arranged between the pair of radial bearings in the direction of the axis in the casing for compressing fluid introduced from the outside of the casing; an expanding part arranged side by side with the compressing part for expanding the fluid introduced from the outside of the casing; and a thrust bearing arranged at a position close to a first end part or a second end part of the rotating shaft with respect to the compressing part and the expanding part in the direction of the axis. Out of a compressing part suction port, a compressing part discharge port, an expanding part suction port, and an expanding part discharge port, the compressing part suction port is arranged at a position closest to the first end part, and the expanding part discharge port is arranged at a position closest to the second end part in the direction of the axis.SELECTED DRAWING: Figure 1 【課題】回転軸のロータダイナミクスを向上させる。【解決手段】回転機械は、軸線周りに回転する回転軸を覆うケーシングと、前記ケーシングに固定され、前記回転軸を回転自在に支持する一対のラジアル軸受と、前記ケーシング内で軸線方向における前記一対のラジアル軸受の間に配置され、前記ケーシングの外部から導入された流体を圧縮する圧縮部と、前記圧縮部と並んで配置され、前記ケーシングの外部から導入された前記流体を膨張させる膨張部と、前記軸線方向において、前記圧縮部及び前記膨張部に対して前記回転軸の第一端部又は第二端部に近い位置に配置されたスラスト軸受とを備え、前記軸線方向において、圧縮部吸込口、圧縮部吐出口、膨張部吸込口、及び膨張部吐出口の中で、前記圧縮部吸込口が前記第一端部に最も近い位置に配置され、前記膨張部吐出口が前記第二端部に最も近い位置に配置されている。【選択図】図１