Title:
ポンプ
Document Type and Number:
Japanese Patent JP4678135
Kind Code:
B2
Abstract:
A pump (10) comprises a primary pump chamber (27) whose volume can be varied by driving a diaphragm (60), an inlet passage for allowing a working fluid to flow into the primary pump chamber (27), an outlet passage for allowing the working fluid to flow out of the primary pump chamber (27), and check valves (41, 42) for opening and closing at least the inlet passage, wherein the total inertance value of the inlet passage is set to be smaller than the total inertance value of the outlet passage, and bubble discharging means for discharging gas bubbles remaining in the primary pump chamber (27) is further provided. As a result, it is possible to provide a pump capable of discharging gas bubbles with the bubble discharging means and thus maintaining a discharging ability, even when the gas bubbles stay in the primary pump chamber (27).
Inventors:
Kunihiko Takashiro
Takeshi Seto
Takeshi Seto
Application Number:
JP2004084638A
Publication Date:
April 27, 2011
Filing Date:
March 23, 2004
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
F04B43/02; F04B53/06; F04B23/06; F04B43/04
Domestic Patent References:
| JP2002322986A | ||||
| JP2003065243A | ||||
| JP9228964A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Osamu Suzawa