Title:
ROTOR AND COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/250674
Kind Code:
A1
Abstract:
Provided is a rotor, for example, with which it is possible to suppress causes of fluid turbulence and to suppress stress concentrations. In a rotor (50) having formed therein a groove (52) with which a moving blade (24) including a dovetail portion (46) and a platform portion (44) connecting the dovetail portion and a blade portion (42) engages: the groove (52) opens in a surface intersecting the axis of rotation of the rotor, and includes a contacting portion (72) which extends obliquely with respect to the axis of rotation, expands toward the radially inner side of the rotor, and comes into contact with the dovetail portion, a bottom portion (74) of an end portion on the radially inner side of the rotor, a joining portion (76) between the contacting portion and the bottom portion, a platform facing portion (70) facing the platform portion further to the radially outer side of the rotor than the contacting portion, and a chamfered portion (78) formed on an end surface in the direction in which the groove extends; and the chamfered dimension of the joining portion is greater on the side on which an angle between the groove and the end surface is an acute angle than on the side on which the angle between the groove and the end surface is an obtuse angle.
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Inventors:
OKUI HIDETAKA (JP)
KONDO TAKAHIRO (JP)
KONDO TAKAHIRO (JP)
Application Number:
PCT/JP2020/020829
Publication Date:
December 17, 2020
Filing Date:
May 27, 2020
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
International Classes:
F04D29/34; F01D5/30
Domestic Patent References:
| WO2017119358A1 | 2017-07-13 |
Foreign References:
| JPS63138403U | 1988-09-12 | |||
| JP2010190199A | 2010-09-02 | |||
| JP2016035209A | 2016-03-17 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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