Title:
磁気浮上型ポンプ
Document Type and Number:
Japanese Patent JP4767488
Kind Code:
B2
Abstract:
In a magnetically levitated pump (1), an impeller-side ferromagnetic body (51) (second ferromagnetic body) provided on a circumferential surface of an impeller (23) facing a casing unit (50) on the side of a position sensor and a casing-side ferromagnetic body (52) (third ferromagnetic body) opposite to the impeller-side ferromagnetic body (51) (second ferromagnetic body) to attract the impeller (23) toward the casing unit (50) on the side of the position sensor are adapted to have opposite portions of mutually different shapes, so that the maximum required attractive force (f2) of an electro-magnet (31) for magnetic bearing is suppressed and length (L5) of the electro-magnet for magnetic bearing is made shorter.
Inventors:
Takami Ozaki
Kenichi Suzuki
Kenichi Suzuki
Application Number:
JP2003363607A
Publication Date:
September 07, 2011
Filing Date:
October 23, 2003
Export Citation:
Assignee:
ntn corporation
Terumo Corporation
Terumo Corporation
International Classes:
F04D13/02; F04D13/06; F04D15/00; F04D29/04; F04D29/048
Domestic Patent References:
| JP2002130177A | ||||
| JP2002021763A | ||||
| JP2001182683A | ||||
| JP9170586A | ||||
| JP2002021764A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Seiichi Watanabe
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Seiichi Watanabe