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US 9,803,654 B2Granted
Impeller, and rotating machine provided with same
AssigneesMitsubishi Heavy Industries, Ltd., Mitsubishi Heavy Industries Compressor Corporation
InventorsNobuyori Yagi, Hiroyuki Miyata
Life of this patent
Estimating the term…
Abstract
The invention includes a disc-shaped disc section (30) that is attached to a rotating shaft (6), and blade sections (40) that are provided on a front surface (31) that is one side in an axial direction of the disc section (30). Balance holes (33) for attaching weight-adjusting weight members W thereto are provided at positions where the blade sections (40) are provided in a radial direction, in a rear surface (51) that is the other side in the axial direction of the disc section (30).
Claims4
An impeller comprising:
- a disc-shaped disc section that extends from a tube portion attached to a rotating shaft and extends radially outward from the tube portion;
- and
- a blade section that is provided in a front surface that is one side in an axial direction of the disc section, wherein
- the disc section is provided with an attachment hole for attaching a weight-adjusting weight, in a rear surface that is the other side in the axial direction of the disc section, and
- the disc section includes a stress-relaxing device provided on at least one radial side of the attachment hole in the rear surface to relax stress concentration caused by a centrifugal force in the attachment hole.
2 more elements
Dependencies are inferred from the claim text.