公开(公告)号：US20220268164A1

公开(公告)日：2022-08-25

申请号：US17627815

申请日：2020-07-14

申请人： MTU AERO ENGINES AG

发明人： Martin Pernleitner ,  Klaus Wittig ,  Manfred Dopfer ,  Dieter Freno ,  Tino Hummel

IPC分类号： F01D5/30 ,  F01D5/32

摘要： An intermediate element is for a blade/rotor disk connection in a rotor of a fluid flow machine. The intermediate element is adapted to a shape of a blade root of a blade and to a blade root slot in a rotor disk for receiving the blade root such that, when arranged between the blade root and rotor disk, the intermediate element prevents contact between the blade root and rotor disk. The intermediate element has, on an outer surface that faces the rotor disk, at least one protrusion to reduce an air flow parallel to an axis of rotation of the rotor between the rotor disk and the intermediate element; and on an inner surface that faces the blade root, a recess that corresponds to the at least one protrusion.

公开(公告)号：US11905852B2

公开(公告)日：2024-02-20

申请号：US17627815

申请日：2020-07-14

申请人： MTU AERO ENGINES AG

发明人： Martin Pernleitner ,  Klaus Wittig ,  Manfred Dopfer ,  Dieter Freno ,  Tino Hummel

IPC分类号： F01D5/30 ,  F01D5/32 ,  F04D29/32 ,  F04D29/34

CPC分类号： F01D5/3007 ,  F01D5/3092 ,  F01D5/323 ,  F04D29/322 ,  F04D29/34 ,  F05D2250/711 ,  F05D2250/712

摘要： An intermediate element is for a blade/rotor disk connection in a rotor of a fluid flow machine. The intermediate element is adapted to a shape of a blade root of a blade and to a blade root slot in a rotor disk for receiving the blade root such that, when arranged between the blade root and rotor disk, the intermediate element prevents contact between the blade root and rotor disk. The intermediate element has, on an outer surface that faces the rotor disk, at least one protrusion to reduce an air flow parallel to an axis of rotation of the rotor between the rotor disk and the intermediate element; and on an inner surface that faces the blade root, a recess that corresponds to the at least one protrusion.

公开(公告)号：US20230128349A1

公开(公告)日：2023-04-27

申请号：US17784216

申请日：2020-12-07

申请人： MTU Aero Engines AG

发明人： Martin Pernleitner ,  Dieter Freno ,  Manfred Dopfer ,  Tino Hummel ,  Klaus Wittig

IPC分类号： F01D5/30 ,  F01D11/00

摘要： The invention relates to a rotor for a turbomachine, having at least one blade and having at least one rotor main part, which has at least one recess, in which a blade root of the least one blade is interlockingly received, wherein the blade root comprises at least one depression, in which at least one protrusion of the at least one rotor main part which protrusion delimits the at least one recess in regions is received, wherein the at least one depression is delimited by a first delimiting face on the blade root side and the at least one protrusion is delimited by a second delimiting face on the rotor main part side. At least the first delimiting face has at least one elevation which narrows a gap at least in regions, which extends between the first delimiting face and the second delimiting face.