IMPELLER MANUFACTURING METHOD, IMPELLER, AND ROTARY MACHINE

• Main Author: KONNO YUYA
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2018
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

To provide an impeller manufacturing method which does not need to heat an entire member to high temperature and does not impose limitations on a metal material used for a first segment and a second segment.SOLUTION: An impeller 1 of the invention includes: a disk part 30 fixed to a rotary shaft 101 which rotates around an axis O; a cover part 50 which is disposed facing the disk part 30; and multiple blade parts 40 provided between the disk part 30 and the cover part 50. The impeller 1 includes: a first segment SG1 formed by a first disk part 31 which is a portion of the disk part 30 at one side of an axis O; a second segment SG2 in which a second disk part 35 which is a portion of the disk part 30 at the other side of the axis O, the cover part 50, and the blade parts 40 are integrally formed; and a joint layer CL which joins the first segment SG1 and the second segment SG2 by friction pressure welding.SELECTED DRAWING: Figure 3 【課題】第一セグメントと第二セグメントに適用される金属材料の制限がなく、かつ高い温度に部材の全体を加熱する必要のないインペラの製造方法を提供すること。【解決手段】本発明のインペラ１は、軸線Ｏの回りに回転する回転軸１０１に固定されるディスク部３０と、ディスク部３０に対向配置されるカバー部５０と、ディスク部３０とカバー部５０との間に設けられる複数のブレード部４０と、を備える。インペラ１は、ディスク部３０の軸線Ｏの一方側の部位である第一ディスク部３１からなる第一セグメントＳＧ１と、ディスク部３０の軸線Ｏの他方側の部位である第二ディスク部３５と、カバー部５０と、ブレード部４０が一体的に構成される第二セグメントＳＧ２と、第一セグメントＳＧ１と第二セグメントＳＧ２を摩擦圧接により接合する接合層ＣＬと、を備えることを特徴とする。【選択図】図３