Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LIQUID PUMP
Document Type and Number:
WIPO Patent Application WO/2019/106889
Kind Code:
A1
Abstract:
This liquid pump (10) is provided with: suction-side connection flow paths (51, 75) which are connected to an inlet port (52) through which liquid flows in, and which connect a first suction flow path (53) and a second suction flow path (63); a discharge-side connection flow path (76) which connects a first discharge flow path (57) and a second discharge flow path (67) and is connected to an outlet port through which liquid flows out; a motor; a drive mechanism which, on the basis of the rotation of the motor, alternates between performing contraction of a first pressure chamber (55) and expansion of a second pressure chamber (65), and performing expansion of the first pressure chamber and contraction of the second pressure chamber; air bubble sensors (81, 82) which are attached to the suction-side connection flow paths and/or the discharge-side connection flow path, and detect air bubbles contained in a liquid circulating through the flow paths to which the air bubble sensors are attached; and a control unit which controls the discharge amount of the liquid by adjusting the rotational speed of the motor on the condition that air bubbles are not detected by the air bubble sensors.

Inventors:
KISHI, Akira (250Ouji 2-chome,Komaki-sh, Aichi 51, 〒4858551, JP)
Application Number:
JP2018/029245
Publication Date:
June 06, 2019
Filing Date:
August 03, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CKD CORPORATION (250 Ouji 2-chome, Komaki-shi Aichi, 51, 〒4858551, JP)
International Classes:
F04B43/02; F04B43/04
Foreign References:
JP2005291010A2005-10-20
JP2001132646A2001-05-18
JP2014145329A2014-08-14
JP2006002709A2006-01-05
JP2000120530A2000-04-25
JP2017036674A2017-02-16
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (Daiichi Hasegawa Bldg.6F, 13-24 Meieki 3-chome, Nakamura-ku, Nagoya-sh, Aichi 02, 〒4500002, JP)
Download PDF:



 
Previous Patent: ENGINE GENERATOR

Next Patent: SEMICONDUCTOR OPTICAL MODULATOR