IMPELLER, ROTARY MACHINE, METHOD FOR MANUFACTURING IMPELLER, AND METHOD FOR MANUFACTURING ROTARY MACHINE

An impeller includes a disk (21) that has tubular first and second disk members (26 and 27), a blade (23) that is integrally provided with the second disk member (27), and a cover (24) that is integrally provided with the blade (23) and covers the blade (23). The first disk member (26) has a ring-sh...

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Bibliographic Details
Main Authors TOKUYAMA Shinichiro, YAGI Nobuyori, ITAGAKI Kenji, TAKAGI Hiroki, MORIKAWA Akihiko
Format Patent
LanguageEnglish
French
German
Published 18.12.2019
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:An impeller includes a disk (21) that has tubular first and second disk members (26 and 27), a blade (23) that is integrally provided with the second disk member (27), and a cover (24) that is integrally provided with the blade (23) and covers the blade (23). The first disk member (26) has a ring-shaped recessed portion (33) therein. The second disk member (27) has a ring-shaped engaging portion (35) that is configured to engage with the first disk member (26) by being inserted into the recessed portion (33). A first shrink-fitting portion (28) is provided in a boundary portion between an outer circumferential surface (35a) of the engaging portion (35) and an inner circumferential surface (33a) of the recessed portion (33) that comes into contact with the outer circumferential surface (35a).
Bibliography:Application Number: EP20170896781