Versatile rotary valve

Patent metadata

Field	Value
Publication number	US-9625044-B2
Application number	US-201314422463-A
Country	US
Kind code	B2
Filing date	Aug 21, 2013
Priority date	Aug 22, 2012
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A rotary valve comprising a stator with an inner stator face, and a rotor with an inner rotor face arranged in sealing contact with the inner stator face, the rotor is rotatably movable to a plurality of rotor positions about a rotational axis relative to the inner stator face, the stator comprises a plurality of connection ports each being in fluidic contact with a corresponding valve orifice at the inner stator face and the rotor comprises two or more interconnection paths for selective fluidic interconnection of said valve orifices with respect to the rotor position, wherein the stator comprises, an inlet port, an outlet port, a component feed port, a component return port, and wherein the interconnection paths in the rotor are arranged to: —in a first rotor position interconnect the inlet port with the outlet port, —in a second rotor position interconnect the inlet port with the component feed port and the component return port with the outlet port, —in a third rotor position interconnect the inlet port with the component return port and the component feed port with the outlet port.

First claim

The invention claimed is:

1. A rotary valve comprising a stator with an inner stator face, and a rotor with an inner rotor face arranged in sealing contact with the inner stator face,
wherein the rotor is rotatably movable to a plurality of rotor positions about a rotational axis relative to the inner stator face,
wherein the stator comprises a plurality of connection ports each being in fluidic contact with a corresponding valve orifice at the inner stator face and the rotor comprises two or more interconnection paths for selective fluidic interconnection of said valve orifices with respect to the rotor position,
wherein the stator comprises an inlet port, an outlet port, a component feed port, and a component return port,
wherein the interconnection paths in the rotor are arranged to:
in a first rotor position interconnect the inlet port with the outlet port,
in a second rotor position interconnect the inlet port with the component feed port and the component return port with the outlet port,
in a third rotor position interconnect the inlet port with the component return port and the component feed port with the outlet port, and
wherein when one of the interconnection paths is forming a fluidic interconnection and the other one or more interconnection paths are not forming fluidic interconnection, they do not cover valve orifices.

2. A rotary valve according to claim 1 wherein the interconnection paths in the rotor are arranged to: in a fourth rotor position interconnect the component feed with the component return port.

3. An analytical instrument comprising at least one rotary valve according to claim 1 .

4. A process system comprising at least one rotary valve according to claim 1 .

5. A chromatography system comprising at least one rotary valve according to claim 1 .

6. A fluidic circuit comprising first and a second rotary valves according to claim 1 and first and a second fluidic components, wherein
the inlet port of the second valve is connected to the outlet port of the first valve,
the first fluidic component is connected between the component feed port of the first valve and the component feed port of the second valve, and
the second fluidic component is connected between the component return port of the first valve and the component return port of the second valve.

Assignees

• Ge Healthcare Bio Sciences Ab

Inventors

• Bjernulf Olle
• Eriksson Christer Olof

Classifications

• Y10T137/86654

  For plural lines · CPC title

• F16K11/076 Primary

  with sealing faces shaped as surfaces of solids of revolution · CPC title

• G01N30/38

  Flow patterns · CPC title

• F16K11/0743 Primary

  with both the supply and the discharge passages being on one side of the closure plates · CPC title

• G01N2030/202

  rotary valves · CPC title