Title:
多段流体機械
Document Type and Number:
Japanese Patent JP4707969
Kind Code:
B2
Abstract:
To provide a multi-stage pump which obtains high efficiency in other discharge area than a partial discharge area and excellent H-Q characteristics in the partial discharge area.
The rear edges 35b of a plurality of return guide vanes 35 are positioned further at the outside in a radial direction of a rotary shaft 19 than the front edge of a vane 36 of an impeller 20. A straightening vane 37 extending in the return flow path 32 from the rear edge 35b of the return guide vane 35 toward the rotary shaft 19 is situated at a part of a plurality of the return guide vanes 35.
COPYRIGHT: (C)2006,JPO&NCIPI
More Like This:
| WO/2008/043527 | MULTISTAGE PUMP ASSEMBLY |
| WO/2018/190734 | LINEAR PUMP USING A SMART FLUID |
Inventors:
Akihiro Wada
Takashi Hara
Toshiaki Kanemoto
Miyano Masafumi
Takashi Hara
Toshiaki Kanemoto
Miyano Masafumi
Application Number:
JP2004149381A
Publication Date:
June 22, 2011
Filing Date:
May 19, 2004
Export Citation:
Assignee:
Torishima Manufacturing Co., Ltd.
International Classes:
F04D1/06; F04D29/44
Domestic Patent References:
| JP142414C2 | ||||
| JP57071797U | ||||
| JP59200089A | ||||
| JP7293478A |
Attorney, Agent or Firm:
Aoyama Aoi
Yasumichi Furukawa
Atsushi Maeda
Yoshiyuki Maebori
Yasumichi Furukawa
Atsushi Maeda
Yoshiyuki Maebori