Title: Microdosing device and method for the dosed delivery of liquids
Application Number: 200480023262 Application Date: 2004.08.12
Publication Number: 1835804 Publication Date: 2006.09.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B01L3/02,B01J19/00
Applicant(s) Name: Zengerle Roland Address:
Inventor(s) Name: Zengerle Roland, Koltay Peter, Streule Wolfgang
Attorney & Agent: kou yangjie
Abstract:
     The invention relates to a microdosing device comprising a fluid conduit (100) with a flexible tube, said conduit having a first end (102) for connecting to a liquid reservoir and a second end (104), which is provided with an outlet. The inventive device is equipped with an actuating unit comprising a displacement element (108), whose travel is adjustable. Said element enables the volume of a section of the flexible tube to be adjusted in order to deliver liquid (130) in the form of separate drops or a separate jet to the outlet by the displacement of the displacement element (108) between a first end position and a second end position, the tube being partially compressed in the first or second end position. In other words, the invention discloses a microdosing device comprising a fluid conduit (100) with a section, along which a cross-section of said fluid conduit can be adjusted by an actuating device, to produce a modification in the volume of the fluid conduit. A ratio of fluidic impedance between the position of the actuating device and the outlet to a fluidic impedance between a first end of the fluid conduit and the position of the actuating device can be varied by modifying the position of the actuating device, in such a way that a dosed volume that is delivered to the outlet can be varied in this manner by at least 10 %.
Time: 14
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