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公开(公告)号：DE69705440D1
公开(公告)日：2001-08-09
申请号：DE69705440
申请日：1997-02-21
Applicant: EBARA CORP
Inventor： NAKANIWA MASARU , ISHIBASHI KINNOSUKE , SHIOZUKA TAKANORI , UMEZAWA KOUICHI
Abstract: A rotor with lobes for use in a turbomachine having a rotation shaft is disclosed. The rotor (1) comprises a rotor shell (2) having a shell member (4), which is made of a sheet strip metal and having profile curvatures to conform to a required shape of the lobe of the rotor, and a connecting portion (3) for connecting the rotor to the rotation shaft (6). By making a rotor from a sheet strip metal through bending process to form a rotor shell, a rotor having thin walls can be produced efficiently and economically to provide a light weight rotor of reduced inertial moment so that the startup process or shut down process can be performed quickly.
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公开(公告)号：DE69705440T2
公开(公告)日：2002-05-16
申请号：DE69705440
申请日：1997-02-21
Applicant: EBARA CORP
Inventor： NAKANIWA MASARU , ISHIBASHI KINNOSUKE , SHIOZUKA TAKANORI , UMEZAWA KOUICHI
Abstract: A rotor with lobes for use in a turbomachine having a rotation shaft is disclosed. The rotor (1) comprises a rotor shell (2) having a shell member (4), which is made of a sheet strip metal and having profile curvatures to conform to a required shape of the lobe of the rotor, and a connecting portion (3) for connecting the rotor to the rotation shaft (6). By making a rotor from a sheet strip metal through bending process to form a rotor shell, a rotor having thin walls can be produced efficiently and economically to provide a light weight rotor of reduced inertial moment so that the startup process or shut down process can be performed quickly.
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公开(公告)号：JPH09287581A
公开(公告)日：1997-11-04
申请号：JP5108097
申请日：1997-02-19
Applicant: EBARA CORP
Inventor： NAKANIWA MASARU , ISHIBASHI KINNOSUKE , SHIOZUKA TAKANORI , UMEZAWA KOICHI
Abstract: PROBLEM TO BE SOLVED: To reduce the weight and the moment of inertia of rotors by fitting rotar shells bendingly formed along the contour of the lobe of a rotor and made of plate-like metal constituted by confronting the end faces to each other to rotary shafts through connecting parts. SOLUTION: Elliptical shaft holes 3a having straight parts for inserting rotary shafts 6 are formed on the central part of a pair of side plates blockading both ends of rotor shells 2 which are bendingly formed along the profile of two lobes out of plate bodies such as stainless steel plates, and the rotary shafts 6 are fixed to the rotor shells 2 by welding so as to contact the rotary shafts 6 with the straight parts of cutout faces. Reinforcing pins 8 arranged between the rotary shaft 6 and the rotor shell 2 are fixedly secured to the rotary shaft 6 at one ends by screws and the like, extended vertically from the rotary shaft 6 and joined with the top end parts T of the lobe L of a rotor 1 at the other ends by welding or the like, so as to reinforce connection of the rotor shell 2 with the rotary shaft 6. In this way, the rotor shell is constituted out of a shell member of uniform and relatively small wall thickness, and hence the weight of the rotor can be remarkably reduced.
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