ROTARY MACHINE

• Main Authors: SUGISHITA HIDEAKI, MAEDA SHIGETOSHI, FUKAO SHINJI
• Format: Patent
• Language: English; Japanese
• Published: 22.07.2019
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

To provide a rotary machine capable of further suppressing fluttering.SOLUTION: A rotary machine comprises a plurality of blades extending radially and provided at intervals in a circumferential direction. The blade has a belly side surface formed into a concave surface shape and a back side surface formed into a convex surface shape in a cross-sectional view in a radial direction. A position that is a part of the back side surface and at which a flow passage cross sectional area is minimum in a flow passage formed by the belly side surface and the back side surface of the blades adjacent to each other is defined as a primary throat. At a portion corresponding to the primary throat position on the back side surface, a flow disturbance part is provided for disturbing a flow along the back side surface.SELECTED DRAWING: Figure 2 【課題】フラッタをさらに抑制することが可能な回転機械を提供する。【解決手段】径方向に延びるとともに周方向に間隔をあけて複数が設けられた翼を備え、翼は、径方向における断面視で凹曲面状をなす腹側面及び凸曲面状をなす背側面を有し、背側面の一部であって、互いに隣り合う翼の腹側面と背側面とによって形成される流路のうち最も流路断面積が小さくなる位置が一次スロート位置とされ、背側面における一次スロート位置に対応する部分に、背側面に沿う流れを乱す流れ乱し部が設けられている。【選択図】図２