Title:
ROTATING BODY AND METHOD FOR MANUFACTURING ROTATING BODY
Document Type and Number:
WIPO Patent Application WO/2015/087414
Kind Code:
A1
Abstract:
[Problem]
To provide a rotating body and a method for manufacturing a rotating body whereby no gap is generated between a rotary shaft and an impeller at an interference fit part where the rotary shaft and the impeller fit together, even during high-speed rotation, and therefore there is no misalignment of the center positions of the rotary shaft and the impeller.
[Solution]
A rotating body (1) comprising a rotary shaft (2), an impeller (3), and a nut (6). The impeller is equipped with a blade section (5), and a hub section (4) having a peripheral surface (4s) that slants with respect to the axial direction of the rotary shaft, and an insertion hole (4h) into which the rotary shaft is inserted. An interference fit part (10), wherein the outer diameter of the rotary shaft is formed so as to be larger than the inner diameter of the insertion hole of the hub section, and which is for fitting the impeller onto the rotary shaft, is formed on the rotating shaft and/or the insertion hole of the hub section. The interference fit part is formed at a position which, when the rotary shaft and the impeller have been fitted together, does not include a maximum outer diameter part (4B) where the outer diameter of the hub is the largest in the axial direction of the rotary shaft.
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Inventors:
HAYASHI NORIYUKI (JP)
OZAKI MAKOTO (JP)
SEIKE NARIAKI (JP)
KANKI HIROSHI (JP)
SUZUKI HIROSHI (JP)
OZAKI MAKOTO (JP)
SEIKE NARIAKI (JP)
KANKI HIROSHI (JP)
SUZUKI HIROSHI (JP)
Application Number:
PCT/JP2013/083206
Publication Date:
June 18, 2015
Filing Date:
December 11, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F01D5/04; F02B39/00; F04D29/28
Foreign References:
| JPS58176499A | 1983-10-15 | |||
| JPS63183434U | 1988-11-25 | |||
| JP2012172645A | 2012-09-10 | |||
| JPH0275725A | 1990-03-15 | |||
| JP2005002849A | 2005-01-06 | |||
| JPS6297297U | 1987-06-20 | |||
| JP4432638B2 | 2010-03-17 | |||
| JP2013142359A | 2013-07-22 |
Other References:
See also references of EP 3081746A4
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P. C. (JP)
誠真 IP patent business corporation (JP)
誠真 IP patent business corporation (JP)
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