Packet-wise proportioning followed by immediate longitudinal mixing

US9791107B2 · kind B2 · utility

Assignee

• AGILENT TECHNOLOGIES, INC. · US

Inventors

• Klaus Witt · Keltern, DE
• Konstantin Shoykhet · Karlsruhe, DE
• Hans-Georg Haertl · Karlsruhe, DE

Key dates

• Filing date: Jul 27, 2011
• Grant date: Oct 17, 2017
• Expiry date: Aug 22, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/2499
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A fluid supply system (150) adapted for metering two or more fluids in controlled proportions and for supplying a resultant mixture, the fluid supply system (150) comprising a plurality of solvent supply lines (104 to 107), each fluidically connected with a fluid source (100 to 103) providing a respective fluid, a pumping unit (110) comprising a reciprocating element (115) adapted for intaking fluid supplied at an inlet of the pumping unit (110) and for supplying the pressurized fluid at an outlet of the pumping unit (110), wherein the pumping unit (110) is adapted for taking in fluids from selected solvent supply lines (104 to 107) and for supplying a pressurized mixture of the fluids at its outlet, a proportioning valve (108) interposed between the solvent supply lines (104 to 107) and the inlet of the pumping unit (110), the proportioning valve (108) adapted for modulating solvent composition by sequentially coupling selected ones of the solvent supply lines (104 to 107) with the inlet of the pumping unit (110), and a longitudinal mixing unit (152) adapted for mixing longitudinally subsequent sections of the fluids so as to modify their succession in flow direction.