Title:
ROTARY BODY, DEVICE AND FACILITY PROVIDED WITH SAME, METHOD FOR MANUFACTURING ROTARY BODY, AND METHOD FOR PREVENTING NOISE OF ROTARY BODY
Document Type and Number:
WIPO Patent Application WO/2023/112584
Kind Code:
A1
Abstract:
In this rotary body, a hole that is opened in a surface of the rotary body is formed. If noise ascribable to the hole is generated when the rotary body is rotated, the depth of the hole or the inner diameter of the hole is changed so that an acoustic natural frequency determined by the inner diameter of the hole and the depth of the hole is offset from a vortex shedding frequency determined by the circumferential speed of the hole opening at a predetermined number of revolutions.
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Inventors:
TAKEDA NORIYUKI (JP)
HAMAGUCHI YUKI (JP)
ITO TAKANORI (JP)
NIDOME ASUKA (JP)
HAMAGUCHI YUKI (JP)
ITO TAKANORI (JP)
NIDOME ASUKA (JP)
Application Number:
PCT/JP2022/042497
Publication Date:
June 22, 2023
Filing Date:
November 16, 2022
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F01D25/00; F16D1/033; F16D3/84; F16F15/32
Foreign References:
| JP2019216542A | 2019-12-19 | |||
| JPS51154632U | 1976-12-09 | |||
| JPH1122891A | 1999-01-26 | |||
| JPS5027203U | 1975-03-28 | |||
| JPS58163717U | 1983-10-31 | |||
| JP2019511661A | 2019-04-25 | |||
| JPS61104106A | 1986-05-22 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF:
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