Title:
VACUUM PUMP, AND ROTATING BODY FOR VACUUM PUMP
Document Type and Number:
WIPO Patent Application WO/2022/176745
Kind Code:
A1
Abstract:
[Problem] To provide a vacuum pump with which it is possible to reduce stress generated in a connecting part of a rotating body and a rotating shaft. [Solution] This vacuum pump is provided with a rotating body 103 which includes rotating blades 102b, 102c on an outer circumference of a rotating blade forming portion 217, is fastened to a rotor shaft 113 by means of bolts 214, and is capable of rotating together with the rotor shaft 113, wherein at least one of a mating hole portion 215 of the rotating body 103, which mating hole portion mates with the rotating shaft 113, or through hole portions 216 through which the bolts 214 penetrate, is a stress reduction target portion, and a groove portion 218 for reducing stress generated in the stress reduction target portion when the rotating body 103 rotates is provided in the rotating body 103.
Inventors:
SHI YONGWEI (JP)
SUZUKI HARUKI (JP)
SUZUKI HARUKI (JP)
Application Number:
PCT/JP2022/005206
Publication Date:
August 25, 2022
Filing Date:
February 09, 2022
Export Citation:
Assignee:
EDWARDS JAPAN LTD (JP)
International Classes:
F04D19/04
Domestic Patent References:
| WO2021015018A1 | 2021-01-28 | |||
| WO2008035497A1 | 2008-03-27 |
Foreign References:
| JP2005320905A | 2005-11-17 | |||
| JP2006194083A | 2006-07-27 | |||
| JP2019138258A | 2019-08-22 | |||
| JPH10246197A | 1998-09-14 | |||
| JPH074383A | 1995-01-10 | |||
| JP2008286013A | 2008-11-27 |
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