摘要:
Integrated, electrically operable micro-valves are formed to control fluid flow and pressure. These valves convert electrical energy to mechanical energy through an energy conversion device (120) having a sealed cavity (100) with a flexible wall (200). The sealed cavity (100) contains a fluid (130) that expands and contracts as it is heated or cooled, thus causing the flexible wall (200) to move. Movement of this wall (200) or membrane is used to move a valve element (300) and dynamically control the opening or closing of a valve port (400) over a predetermined range.
摘要:
The invention relates to a method of controlling flow of liquids in a micro channel structure. It comprises providing in said micro channel structure plugs (34) of polymer material in said structure, said polymer material in a first state blocking said channel from liquid flow, and in a second state providing a free path-way (32) for liquid flow. Energy is selectively applied so as to cause said polymer to enter a desired one of said first or second states. It also relates to a micro channel valve system, comprising a plurality of such plugs (34). Additionally it comprises a chemical reactor, comprising a plurality of micro chambers interconnected by micro channels, having a valve system according to the invention.
摘要:
The invention relates to a micro valve normally in a closed position, comprising a membrane (80), an activating device (100) for controlling the deformation of the membrane (80) and a valve seal (180) which is deformed by the controllable deformation of the membrane (80). The valve seal (180) is situated at least partially opposite the membrane (80) and is arranged in a first position in the normally closed position of the valve, along a sealing lip (130) disposed between the valve seal (180) and the membrane. The sealing lip (130) is so arranged that an outlet of the valve, which is fluidly connected to an interrupted section of the sealing lip (130), is fluidically sealed in relation to an inlet channel (170) which boarders on the valve seal (180). The valve seal can also be deformed in a second position in order to enable a fluidic connection between the outlet (140) and the inlet channel (170) when the valve is in an open position.
摘要:
A passive microvalve comprises a substrate (1) having a first aperture (2). An upper plate (7a) is mounted on the substrate and has a second aperture (7b) opening into a space defined between the substrate and the upper plate. A closure member (4) is mounted in the space and is movable between a first position in which it allows fluid flow between the first and second apertures and a second position in which it closes the second aperture.
摘要:
A adaptor for receiving a fluidic device (12) and facilitating connection of the device (12) to a similar device or other object, the device having defined therein at least one fluid pathway (24), the adaptor being capable of receiving fluid from said at least one pathway (24) and having connecting means (28) for connecting to the, or each fluid pathway (24), so as to substantially immobilise the pathway(s) with respect to the device, thereby preventing damage to the pathway(s), the means for connecting each pathway provides a fluid tight seal, so that in use fluid passes to/from the device, without leakage, to a similar device.
摘要:
Eine mikromechanische Aktorstruktur besitzt ein Wirkelement (20) und eine Trägerstruktur (24), wobei das Wirkelement durch eine Aufhängungseinrichtung (22) an der Trägerstruktur (24) angebracht ist. Die Aufhängungseinrichtung (22) umfaßt zumindest zwei Bereiche, die sich in unterschiedlichen Richtungen von dem Wirkelement (20) weg erstrecken und jeweils mit dem Wirkelement (20) und der Trägerstruktur (24) verbunden sind. Auf zumindest zwei derartigen Bereichen der Aufhängungseinrichtung (22) ist jeweils ein separates Aktorelement (30, 32) angeordnet, derart, daß das Wirkelement (20) durch Betätigen der Aktorelemente (30, 32) bewegbar ist. Die Aufhängungseinrichtung (22) besitzt eine Koppeleinrichtung (28), die mit dem Wirkelement (20) verbunden ist, wobei die Koppeleinrichtung (28) derart ausgebildet ist, daß bei einer Betätigung der Aktorelemente (30, 32) die Aufhängungseinrichtung (22) in Ihrer Erstrekkung zwischen dem Wirkelement (20) und der Trägerstruktur (24) verlängerbar ist. Bei einem Mikroventil ist das Wirkelement (20) durch einen Ventilstößel und die Trägerstruktur (24) durch einen Ventilgrundkörper mit einer Durchlaßöffnung (34) durch denselben gebildet.
摘要:
A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.