Invention Grant
- Patent Title: Liquid feeding device and fluid chromatograph
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Application No.: US16648077Application Date: 2017-10-23
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Publication No.: US11307179B2Publication Date: 2022-04-19
- Inventor: Jun Yanagibayashi , Shinya Imamura , Keisuke Ogawa , Masataka Nikko , Shinichi Fujisaki
- Applicant: SHIMADZU CORPORATION
- Applicant Address: JP Kyoto
- Assignee: SHIMADZU CORPORATION
- Current Assignee: SHIMADZU CORPORATION
- Current Assignee Address: JP Kyoto
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- International Application: PCT/JP2017/038208 WO 20171023
- International Announcement: WO2019/082243 WO 20190502
- Main IPC: G01N30/32
- IPC: G01N30/32 ; F04B49/20 ; G01N30/34 ; F04B23/06 ; F04B49/06 ; B01D15/16 ; F04B11/00 ; G01N30/02

Abstract:
The liquid feeding device includes a discharge speed calculation part configured to calculate a discharge speed v of the plunger pump so that a converted value LATM under an atmospheric pressure of a flow rate LPRE of the mobile phase discharged to the discharge channel from the pump part becomes a set flow rate LSET using a volume V of the mobile phase in the pump chamber of the closing pump immediately before the precompression process is started, a volume ΔV reduced due to the precompression process of the mobile phase in the pump chamber of the closing pump, and a feeding pressure P; and a discharge operation controller configured to control a discharge speed of the plunger pump to a discharge speed v calculated by the discharge speed calculation part.
Public/Granted literature
- US20200278329A1 LIQUID FEEDING DEVICE AND FLUID CHROMATOGRAPH Public/Granted day:2020-09-03
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