Title:
ポンプユニット
Document Type and Number:
Japanese Patent JP5524285
Kind Code:
B2
Abstract:
According to an embodiment, a pump unit provided for piping which feeds a liquid at a preset unit flow rate includes (n + 1) pumps (10-1¼10-3) and a constant flow valve (20). The (n + 1) pumps (10-1¼10-3) are arranged in series and set to pressurize the liquid so as to achieve the unit flow rate when n pumps are arranged in series. When the fluid is pressurized by n pumps of the (n + 1) pumps (10-1¼10-3), the constant flow valve (20) installed downstream of the (n + 1) pumps gives first resistance to the fluid to feed the fluid at the unit flow rate. In addition, when the fluid is pressurized by the (n + 1) pumps (10-1¼10-3), the constant flow valve (20) gives second resistance larger than the first resistance to the fluid to feed the fluid at the unit flow rate.
Inventors:
Kensuke Aoki
Application Number:
JP2012154458A
Publication Date:
June 18, 2014
Filing Date:
July 10, 2012
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
F04B23/04; F04D15/00
Domestic Patent References:
| JP200727257A | ||||
| JP2002541377A | ||||
| JP41499A |
Attorney, Agent or Firm:
Kurata Masatoshi
Takakura Shigeo
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Nobuhisa Nogawa
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takakura Shigeo
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Nobuhisa Nogawa
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi